Guide tool used between bearing seat and main shaft

Abstract

The utility model discloses a guide tool used between a bearing seat and a main shaft, which comprises a first mounting component mounted on the bearing seat and a second mounting component mounted on the main shaft, and the first mounting component is connected with a plurality of radial telescopic components. And the radial telescopic assembly is in contact with the second mounting assembly so as to adjust the radial offset of the bearing seat. The height difference between the end face of the main shaft and the small end face of the rear bearing outer ring can be measured after the alignment degree of the bearing seat and the main shaft is adjusted until the requirement is met, and accurate measurement of data is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of guiding tool for bearing seat and main shaft, belong to mechanical assembly tooling technical field. BACKGROUND

[0002] Currently, the main shaft system of wind power half direct drive unit is two single-row tapered roller bearings, and the commonly used assembly process is as follows:

[0003] (1) install the front bearing inner ring on the main shaft in place.

[0004] (2) install the front and rear bearing outer rings on the bearing seat in place.

[0005] (3) hoist the bearing seat assembly (including the bearing seat and two outer rings) to the main shaft in place.

[0006] (4) heat and hoist the rear bearing inner ring to the main shaft in place.

[0007] (5) place multiple sets of gasket tooling on the main shaft end face in uniform distribution, hoist the product pressing plate to the gasket tooling. Install multiple sets of threaded fasteners to connect the product pressing plate, gasket tooling and main shaft end face, install a hollow hydraulic jack on the threaded fastener, press the product pressing plate downward synchronously, and then press the rear bearing inner ring downward, until the room temperature is restored.

[0008] (6) remove the product pressing plate and gasket tooling, measure the height difference between the main shaft end face and the small end face of the rear bearing outer ring, and substitute the value into the formula to calculate the height of the product pressing plate, which is the height difference between the main shaft end face and the large end face of the rear bearing inner ring when the rear bearing inner ring is assembled in place.

[0009] (7) adjust the height of the product pressing plate according to the calculation result.

[0010] (8) install the product pressing plate after adjustment, connect the threaded fasteners between the product pressing plate and the main shaft end face, and install the rear bearing inner ring in place.

[0011] The above assembly process has the following problems or risks:

[0012] (1) The rear bearing inner ring and the main shaft are in interference fit, and the radial pressure generated by the interference causes deformation of the main shaft end face, which affects the measurement accuracy of the height difference between the main shaft end face and the small end face of the rear bearing outer ring.

[0013] (2) The above operation adopts the product pressing plate to press down the bearing inner ring to center, that is, the rear bearing outer ring is aligned by the rear bearing inner ring, and the alignment degree of the rear bearing inner ring and the main shaft cannot be guaranteed. The alignment degree can be measured by the eight-point height difference deviation of the main shaft end face and the large end face of the rear bearing inner ring. If the deviation is too large, the local clearance between the rear bearing inner ring roller and the rear bearing outer ring raceway will be negative, that is, the inner ring has already applied additional axial pressure to the outer ring before measurement, which does not meet the measurement requirements and affects the final bearing clearance.

[0014] (3) If the thickness of the gasket tool is not suitable, the inner ring will be pressed too much before measuring the data, that is, the clearance between the rear bearing inner ring roller and the rear bearing outer ring raceway is negative. Practical new type content

[0015] The utility model aims at: in view of the above-mentioned problem, provide a kind of guiding tool for the bearing seat and the guide tool between main shaft, can adjust the alignment degree of bearing seat and main shaft until meet requirement then measure the height difference of main shaft end face and rear bearing outer ring small end face, realize the accurate measurement of data.

[0016] The technical scheme adopted by the utility model is as follows:

[0017] A guiding tool for the bearing seat and the guide tool between main shaft, including first installation component installed on bearing seat and second installation component installed on main shaft, the first installation component is connected with multiple radial telescopic components, the radial telescopic component is contacted with second installation component to adjust the radial offset of bearing seat.

[0018] Optionally, the first installation component includes a support plate installed on the upper part of the bearing seat, and the support plate is connected with the bearing seat through a first connecting piece; a connecting plate is arranged below the support plate, and the connecting plate is connected with the radial telescopic components; a rib plate is arranged between the connecting plate and the support plate.

[0019] Optionally, the support plate is in the shape of a cross, a first bottom surface of the support plate is engaged with the upper end surface of the bearing seat, and a first side surface of the support plate is matched with the inner ring surface of the bearing seat.

[0020] Optionally, the connecting plate has an axial positioning part and a radial positioning part for respectively positioning the radial telescopic components in the axial and radial directions.

[0021] Optionally, the second installation component includes a positioning ring installed on the upper part of the main shaft, and the outer periphery of the positioning ring is connected with the main shaft through a second connecting piece; an inner positioning ring surface is arranged in the positioning ring, and the inner positioning ring surface is contacted with the radial telescopic components.

[0022] Alternatively, the second bottom surface of the positioning ring is engaged with the upper end surface of the main shaft, and the second side surface of the positioning ring is matched with the inner ring surface of the main shaft.

[0023] Alternatively, the radial telescopic assembly comprises a moving block, a screw rod is screwed on the radially inner side of the moving block, and the screw rod is rotatably fixed on the first mounting assembly; the first mounting assembly is provided with a strip-shaped slot extending in the radial direction, and the upper portion of the moving block is connected with the strip-shaped slot through a third connecting piece, and the third connecting piece is movable along the strip-shaped slot.

[0024] Alternatively, the radially outer side of the moving block is provided with a circular arc supporting surface.

[0025] Alternatively, the radially outer side of the moving block is provided with a bearing through a connecting shaft, and the bearing is in contact with the second mounting assembly.

[0026] Alternatively, the second mounting assembly is provided with an oil receiving groove.

[0027] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present application are as follows:

[0028] The guiding tool for the bearing seat and the main shaft provided by the present application adjusts the alignment degree of the bearing seat and the main shaft, and ensures the accurate alignment of the bearing seat and the main shaft. The radial pressure of the bearing inner ring and the main shaft caused by poor alignment is avoided, and the deformation of the end surface of the main shaft is reduced. In addition, the height difference between the end surface of the main shaft and the small end surface of the rear bearing outer ring can be measured in advance, and the rear bearing inner ring has not been installed at this time, so that the measurement error caused by the interference fit of the inner ring is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a bearing seat and main shaft assembly schematic view.

[0030] Fig. 2 is a guiding tool assembly schematic view.

[0031] Fig. 3 is a guiding tool internal structure schematic view.

[0032] In the diagram, the markings are: 1-bearing housing, 2-spindle, 3-front bearing inner ring, 4-front bearing outer ring, 5-rear bearing outer ring, 6-rear bearing inner ring, 7-guide fixture, 71-first mounting assembly, 711-support plate, 7111-first bottom surface, 7112-first side surface, 712-first connecting piece, 713-radial positioning part, 714-rib plate, 715-axial positioning part, 72-second mounting assembly, 721- Positioning ring, 7211-positioning annular surface, 7212-second bottom surface, 7213-second side surface, 722-second connecting piece, 723-oil receiving groove, 73-radial telescopic assembly, 731-moving block, 732-screw, 733-third connecting piece, 734-arc support surface, 735-connecting shaft, 736-bearing, 8-product pressure plate, 9-pressure plate fixture, 91-first pressing surface, 92-second pressing surface. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0035] A guide tool 7 for use between the bearing housing and the spindle, such as Figs. 1-3 As shown, it includes a first mounting assembly 71 mounted on a bearing housing 1 and a second mounting assembly 72 mounted on a spindle 2. The first mounting assembly 71 is connected to a plurality of radial telescopic assemblies 73, which contact the second mounting assembly 72 to adjust the radial offset of the spindle 2.

[0036] The first mounting assembly 71 is mounted on the bearing housing 1 to fix and support the radial telescopic assembly 73. The radial telescopic assembly 73 is connected to the first mounting assembly 71 and can contact the second mounting assembly 72 to generate radial force, thereby adjusting the radial position of the bearing housing 1. The second mounting assembly 72 is mounted on the spindle 2 and interacts with the radial telescopic assembly 73 of the first mounting assembly 71, thereby moving the bearing housing 1 and adjusting its position. By adjusting the radial telescopic assembly 73, the radial position of the bearing housing 1 can be fine-tuned, i.e., the offset of the bearing housing 1 relative to the spindle 2 can be adjusted. These telescopic assemblies can be screw jacks, hydraulic cylinders, or other devices capable of providing precise radial force. During adjustment, the operator ensures that the relative positions of the spindle 2 and the bearing housing 1 achieve the designed alignment accuracy by measuring their relative positions.

[0037] Through the fine adjustment of the radial telescopic assembly 73, the accurate alignment of the bearing seat 1 and the main shaft 2 can be achieved, the assembly error is reduced, the alignment of the rear bearing inner ring 6 and the main shaft 2 is ensured to be good, and the risk of the inner ring being skewed on the main shaft 2 is avoided. At this time, through the advance measurement of the height difference, the interference fit of the rear bearing inner ring 6 and the main shaft 2 is avoided, which may cause the deformation of the end face of the main shaft 2, affect the measurement accuracy, and improve the accuracy of the measurement data. And since the present scheme can ensure the good alignment of the inner ring and the main shaft 2, the damage risk caused by the excessive local stress of the inner ring roller and the outer ring raceway is reduced.

[0038] As another specific embodiment, the first mounting assembly 71 includes a support plate 711 mounted on the upper part of the bearing seat 1, and the support plate 711 is connected with the bearing seat 1 through a first connecting piece 712; a connecting plate is arranged below the support plate 711, and the connecting plate is connected with the radial telescopic assembly 73; a rib plate 714 is arranged between the connecting plate and the support plate 711. The support plate 711 located on the upper part of the bearing seat 1 provides support for the entire first mounting assembly 71. The first connecting piece 712 is used to fix the support plate 711 to the bearing seat 1, which can be a bolt. Through the first connecting piece 712, the support plate 711 can be conveniently mounted on the bearing seat 1. The connecting plate is located below the support plate 711 and is connected with the radial telescopic assembly 73, which is used to transmit the radial force. The rib plate 714 is arranged between the support plate 711 and the connecting plate, which is used to enhance the structural strength and stability of the entire first mounting assembly 71.

[0039] As another specific embodiment, the support plate 711 is in the shape of a "cross", the first bottom surface 7111 of the support plate 711 is engaged with the upper end surface of the bearing seat 1, and the first side surface 7112 of the support plate 711 is matched with the inner ring surface of the bearing seat 1. The support plate 711 in the shape of a "cross" provides four independent adjustment points in the annular direction, which are uniformly distributed around the bearing seat 1 and form an interval of 90 degrees. Such a layout can ensure that when adjusting the bearing seat 1, the bearing seat 1 can be uniformly pushed and pulled from four different directions, thereby achieving accurate alignment. The first bottom surface 7111 of the support plate 711 is engaged with the upper end surface of the bearing seat 1, which provides a stable support basis for the support plate 711 and ensures that the support plate 711 will not move or tilt during the entire adjustment process. The first side surface 7112 of the support plate 711 is matched with the inner ring surface of the bearing seat 1, which helps to prevent the first mounting assembly 71 from deviating in the radial direction.

[0040] As another specific embodiment, the connecting plate has an axial positioning portion 715 and a radial positioning portion 713 that respectively position the radial telescopic assembly 73 axially and radially. Specifically, the axial positioning portion 715 is a horizontal plate that contacts the top or bottom of the radial telescopic assembly 73 and is connected to the assembly by a fixing bolt or other fastener to prevent axial displacement. The radial positioning portion 713 is a vertical plate that is fixedly connected to the fixed end of the radial telescopic assembly 73 to ensure the correct position of the assembly in the radial direction. The design of the axial and radial positioning portions 713 increases the overall rigidity of the connecting plate and enhances the stability of the connection between the radial telescopic assembly 73 and the connecting plate.

[0041] As another specific embodiment, the second mounting assembly 72 includes a positioning ring 721 mounted on the upper part of the main shaft 2, and the outer periphery of the positioning ring 721 is connected to the main shaft 2 by a second connecting member 722. The inside of the positioning ring 721 is provided with a positioning circular surface 7211 that contacts the radial telescopic assembly 73. The positioning ring 721 is connected to the main shaft 2 by the second connecting member 722 (such as a bolt, a clamping device, etc.), which ensures that the positioning ring 721 is firmly fixed on the main shaft 2. Since the positioning ring 721 is fixed on the main shaft 2, the radial telescopic assembly 73 can adjust the position of the bearing seat 1 by contacting the positioning circular surface 7211, providing precise radial positioning so that the bearing seat 1 can be accurately aligned in the main shaft 2. The design of the positioning ring 721 can prevent the radial telescopic assembly 73 from directly contacting the main shaft 2, thereby avoiding damage to the surface of the main shaft 2.

[0042] As another specific embodiment, the second bottom surface 7212 of the positioning ring 721 engages with the upper end surface of the main shaft 2, and the second side surface 7213 of the positioning ring 721 cooperates with the inner ring surface of the main shaft 2. The engagement of the second bottom surface 7212 of the positioning ring 721 with the upper end surface of the main shaft 2 ensures the axial positioning of the positioning ring 721 on the main shaft 2, and the cooperation of the second side surface 7213 of the positioning ring 721 with the inner ring surface of the main shaft 2 provides radial positioning, preventing relative movement of the positioning ring 721 during assembly and ensuring assembly accuracy.

[0043] As another specific embodiment, the radial telescopic assembly 73 comprises a moving block 731, a screw 732 is screwed on the radially inner side of the moving block 731, and the screw 732 is rotatably fixed on the first mounting assembly 71; the first mounting assembly 71 is provided with a radially extending strip-shaped slot, and the upper part of the moving block 731 is connected with the strip-shaped slot through a third connecting piece 733, and the third connecting piece 733 is movable along the strip-shaped slot. The moving block 731 is the core part of the radial telescopic assembly 73, and it can move radially on the first mounting assembly 71 to adjust the position of the bearing seat 1. By rotating the screw 732, the moving block 731 can move radially in the strip-shaped slot, so as to adjust the relative position between the main shaft 2 and the bearing seat 1, and realize accurate alignment. The design of the strip-shaped slot allows the moving block 731 to move radially in the slot, while limiting its movement in other directions. The third connecting piece 733 is used to connect the upper part of the moving block 731 and the strip-shaped slot, and allows the moving block 731 to move along the strip-shaped slot, which can be a bolt.

[0044] As another specific embodiment, the radially outer side of the moving block 731 is provided with a circular arc supporting surface 734. Due to the shape of the circular arc surface, when the moving block 731 is subjected to a radial force, the point of action of the moment will be located on the center line of the circular arc surface, which helps to maintain the balance of the moving block 731 and reduces tilting and deviation.

[0045] As another specific embodiment, the radially outer side of the moving block 731 is provided with a bearing 736 through a connecting shaft 735, and the bearing 736 is in contact with the second mounting assembly 72. The inner ring of the bearing 736 is fixed with the connecting shaft 735, and the outer ring is in contact with the second mounting assembly 72. When the main shaft 2 moves, the movement of the moving block 731 can be converted into rotary motion through the bearing 736, avoiding sliding friction between the positioning ring 721 and the moving block 731.

[0046] As another specific embodiment, the second mounting assembly 72 is provided with an oil receiving groove 723. Further, the oil receiving groove 723 is arranged at the bottom of the inner ring of the positioning ring 721 and below the bearing 736. The oil receiving groove 723 can collect the lubricating oil or grease overflowing from the bearing 736, preventing it from flowing or accumulating in unwanted places.

[0047] The working process of the guiding tool 7 provided by the embodiment for the bearing seat 1 and the main shaft 2 is as follows:

[0048] Step 1, install the front bearing inner ring 3 on the main shaft 2 in place;

[0049] Step 2, install the front and rear bearing outer rings 5 on the bearing seat 1 in place;

[0050] Step 3.1, install the first mounting assembly 71 of the guiding tool 7 on the bearing seat 1, and install the second mounting assembly 72 of the guiding tool 7 on the main shaft 2;

[0051] Step 3.2, hoist the bearing seat 1 assembly to the main shaft 2 in place;

[0052] Step 3.3, install and adjust the radial telescopic assembly 73 of the guiding tool 7, so that the supporting surface thereof is in contact with the locating cylindrical surface of the main shaft 2 part, rotate the bearing seat 1, and constantly adjust the radial telescopic assembly 73 until the alignment degree of the bearing seat 1 and the main shaft 2 meets the requirement.

[0053] Step 4, measure the height difference between the end surface of the main shaft 2 and the small end surface of the rear bearing outer ring 5, and use the value to calculate the height of the shoulder of the product pressing plate 8;

[0054] Step 5, according to the calculation result, grind the shoulder height of the product pressing plate 8;

[0055] Step 6, heat the rear bearing inner ring 6, and assemble the pressing plate tool 9 and the rear bearing inner ring 6 into an integrated body;

[0056] Step 7, evenly install a plurality of pad tool assemblies on the end surface of the main shaft 2, hoist the rear bearing inner ring 6 assembly to the main shaft 2 in place, connect the end surface of the main shaft 2, the pad tool assembly, the pressing plate tool 9 and the hollow jack, so that the jack outputs pressure until the room temperature is restored;

[0057] Step 8, disassemble the pressing plate tool 9 and the pad tool assembly;

[0058] Step 9, install the product pressing plate 8 after grinding, connect the product pressing plate 8 and the end surface of the main shaft 2, and install the rear bearing inner ring 6 in place.

[0059] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. The present application extends to any new features or any new combinations disclosed in the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the details of the embodiments not disclosed, such as specific structures, connection modes, etc., can be obtained from the prior art by those skilled in the art, and the present disclosure does not specifically limit the embodiments.

Claims

1. A guiding tool for guiding between a bearing seat and a main shaft, characterized in that: The application relates to a bearing seat (1) and a main shaft (2) which are connected through a first mounting assembly (71) and a second mounting assembly (72), wherein the first mounting assembly (71) is connected with a plurality of radial telescopic assemblies (73), and the radial telescopic assemblies (73) are in contact with the second mounting assembly (72) to adjust the radial offset of the bearing seat (1).

2. The bearing housing and spindle guide tooling of claim 1 wherein: The first mounting assembly (71) comprises a support plate (711) mounted on the upper portion of the bearing seat (1), and the support plate (711) is connected with the bearing seat (1) through a first connecting piece (712); a connecting plate is arranged below the support plate (711) and connected with the radial telescopic assemblies (73); and a rib plate (714) is arranged between the connecting plate and the support plate (711).

3. The bearing housing-to-spindle guide tooling of claim 2, wherein: The support plate (711) is in the shape of a cross, the first bottom surface (7111) of the support plate (711) is in engagement with the upper end surface of the bearing seat (1), and the first side surface (7112) of the support plate (711) is in cooperation with the inner ring surface of the bearing seat (1).

4. The bearing housing and spindle guide tooling of claim 2 wherein: The connecting plate is provided with an axial positioning portion (715) and a radial positioning portion (713) for respectively positioning the radial telescopic assemblies (73) in the axial and radial directions.

5. The bearing housing-to-spindle guide tooling of claim 1 wherein: The second mounting assembly (72) comprises a positioning ring (721) mounted on the upper portion of the main shaft (2), and the outer periphery of the positioning ring (721) is connected with the main shaft (2) through a second connecting piece (722); the inner portion of the positioning ring (721) is provided with a positioning circular ring surface (7211) in contact with the radial telescopic assemblies (73).

6. The bearing housing-to-spindle guide tooling of claim 5 wherein: The second bottom surface (7212) of the positioning ring (721) is in engagement with the upper end surface of the main shaft (2), and the second side surface (7213) of the positioning ring (721) is in cooperation with the inner ring surface of the main shaft (2).

7. The bearing housing-to-spindle guide tooling of claim 1 wherein: The radial telescopic assembly (73) comprises a moving block (731), the radial inner side of the moving block (731) is screwed with a screw rod (732), the screw rod (732) is rotatably fixed on the first mounting assembly (71), the first mounting assembly (71) is provided with a strip-shaped groove extending in the radial direction, the upper portion of the moving block (731) is connected with the strip-shaped groove through a third connecting piece (733), and the third connecting piece (733) can move along the strip-shaped groove.

8. The bearing housing-to-spindle guide tooling of claim 7, wherein: The radial outer side of the moving block (731) is provided with a circular arc supporting surface (734).

9. The bearing housing-to-spindle guide tooling of claim 8, wherein: The radial outer side of the moving block (731) is provided with a bearing (736) through a connecting shaft (735), and the bearing (736) is in contact with the second mounting assembly (72).

10. The bearing housing-to-spindle guide tooling of claim 9, wherein: The second mounting assembly (72) is provided with an oil receiving groove (723).

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