A high-speed shaft bearing outer sleeve mounting device

Abstract

The utility model relates to bearing outer sleeve spare technical field, concretely relates to a high -speed axle bearing outer sleeve spare mounting device, including travelling crane, lifting ring screw and mounting bracket, the mounting bracket includes base, the vertical support column is installed on the base, the support column is connected with the lower surface of support ring, and the axis line of support ring is vertical setting, the lifting ring of lifting ring screw is used for connecting with travelling crane, and the threaded rod of lifting ring screw is used for connecting with the thread lifting hole on high -speed axle end face. The utility model supports bearing outer sleeve spare through the support ring of mounting bracket, avoids bearing outer sleeve spare rotation, can realize the vertical installation of the self -aligning roller bearing and bearing outer sleeve spare, shortens the time of travelling crane occupation, need not use the copper hammer or copper bar to knock the installation, reduces the dependence on the experience of worker, reduces the strain of self -aligning roller bearing, guarantees the coaxality of self -aligning roller bearing and bearing outer sleeve spare more easily, the inner wall of bearing outer sleeve spare will also automatically limit the skew of self -aligning roller bearing, further reduces the risk of strain.

Description

Technical Field

[0001] This utility model relates to the field of bearing outer kit technology, specifically to a high-speed shaft bearing outer kit installation device. Background Technology

[0002] Self-aligning roller bearings consist of double-row rollers. The outer ring has a common spherical raceway, while the inner ring has two raceways, which are inclined at a certain angle relative to the bearing axis. This ingenious design gives self-aligning roller bearings a self-aligning function, making them less susceptible to angular errors between the shaft and bearing housing or shaft bending during use. They are well-suited for applications where angular deviations occur due to installation errors or shaft deflection. In terms of load-bearing capacity, self-aligning roller bearings perform excellently, capable of withstanding both radial and bidirectional axial loads. Due to these superior characteristics, they are widely used in various types of machinery across numerous fields, such as papermaking machinery, speed reducers, railway vehicle axles, rolling mill gearbox bearing housings, rolling mill rollers, crushers, vibrating screens, printing machinery, and woodworking machinery.

[0003] However, while the self-aligning function of self-aligning roller bearings brings advantages, it also presents significant challenges to the installation of their bearing outer casing. Because the inner and outer rings can be offset at a certain angle, the outer ring's deflection is not fixed, making the installation process of the self-aligning roller bearing outer casing quite tricky. In existing technology, high-speed shafts are relatively heavy, so the end faces of both ends of the high-speed shaft usually have threaded lifting holes for easy lifting. After the high-speed shaft and bearing are installed, the method used to install the bearing outer casing is as follows: Using a crane, the first end and middle of the high-speed shaft are lifted horizontally. Then, the second end of the high-speed shaft is inserted and passed through the bearing outer casing. Next, the middle lifting point is removed, and a lifting point is set at the second end. Then, the high-speed shaft and the bearing outer ring are ensured to be concentric to facilitate the bearing's insertion into the bearing outer casing. To avoid damage to both during the insertion process, two to three experienced workers need to work together, using a copper hammer or copper rod to symmetrically tap the bearing, ensuring consistent tapping force, to insert the bearing into the bearing outer casing.

[0004] However, in the above-mentioned prior art, the installation method of the bearing outer assembly of the self-aligning roller bearing takes too long with the crane, relies heavily on the experience of the installer, and it is difficult to ensure the coaxiality of the bearing and the bearing outer assembly in a horizontal state. The bearing and the bearing outer assembly are prone to misalignment, and knocking them under misalignment is more likely to cause damage. Utility Model Content

[0005] To address the technical problems of excessive time spent using a crane during the installation of bearing outer components for self-aligning roller bearings in existing technologies, high dependence on the experience of installation workers, difficulty in ensuring coaxiality between the bearing and the bearing outer component in a horizontal state, and the tendency for the bearing and bearing outer component to become misaligned, which can easily lead to damage when struck under misalignment, this utility model provides a high-speed shaft bearing outer component installation device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-speed shaft bearing outer kit mounting device includes a trolley, an eye bolt, and a mounting bracket. The mounting bracket includes a base, on which a vertical support rod is mounted. The top end of the support rod is connected to the lower surface of a support ring, and the axis of the support ring is vertically aligned. The trolley includes a hook, which is connected to the eye of the eye bolt. The threaded shank of the eye bolt is used to connect to a threaded lifting hole on the top end face of the high-speed shaft.

[0008] By adopting the above structural scheme, this utility model supports the bearing outer assembly through the support ring of the fixed frame, preventing the bearing outer assembly from rotating. The support ring axis is set vertically. Before installation, the outer ring of the self-aligning roller bearing is adjusted to ensure it is horizontal. The high-speed shaft and the self-aligning roller bearing are vertically lifted by the crane and eye bolts. During installation, the weight of the outer ring of the high-speed shaft and the self-aligning roller bearing is uniform, so that the high-speed shaft and the self-aligning roller bearing are aligned with the bearing outer assembly and slowly lowered. The weight of the high-speed shaft and the self-aligning roller bearing ensures that the outer ring of the self-aligning roller bearing is evenly stressed and installed in the bearing outer assembly. After installation, the high-speed shaft, the self-aligning roller bearing and the bearing outer assembly can be lifted out together, thus realizing the vertical installation of the self-aligning roller bearing and the bearing outer assembly. Compared to existing horizontal installation methods, this significantly reduces the time spent on crane operation and improves installation efficiency. It eliminates the need for hammers or rods to strike the bearings, reducing reliance on worker experience and minimizing the risk of damage to the self-aligning roller bearings. Furthermore, as the high-speed shaft and self-aligning roller bearings descend slowly and vertically, it is easier to ensure the coaxiality of the self-aligning roller bearings and the bearing outer casing. The inner wall of the bearing outer casing also automatically restricts the misalignment of the self-aligning roller bearings, further reducing the risk of damage caused by misalignment or impact.

[0009] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, multiple support rods are provided, and the support rods are evenly arranged around the circumferential direction of the support ring.

[0010] With the above structural design, multiple support rods are evenly arranged around the support ring circumferentially, which can balance the force on the support ring from multiple angles and avoid tilting of the support ring due to excessive force at a single point. Furthermore, the evenly distributed support rods can distribute the weight of the bearing outer assembly and high-speed shaft to the base, improving the overall structure's load-bearing capacity and resistance to deformation.

[0011] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the base includes two horizontally arranged longitudinal base plates and two horizontally arranged transverse base plates, the longitudinal base plates and transverse base plates are perpendicular to each other, and each longitudinal base plate is connected between the two transverse base plates.

[0012] The above structural design features a vertically intersecting connection between the longitudinal and transverse base plates, which expands the contact area between the base and the ground, improves overall stability, and ensures that the stress on the base is evenly distributed across the longitudinal and transverse base plates, avoiding localized stress concentration and preventing displacement or tipping of the base during installation.

[0013] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, four support rods are provided, and the bottom ends of the four support rods are respectively connected to four connection points formed by the connection of two longitudinal base plates and two transverse base plates.

[0014] With the above structural design, four support rods are connected to four high-strength nodes at the intersection of the base plate, so that the supporting force is directly applied to the most stable position of the base, reducing the relative deformation between the support rods and the base, ensuring that the support ring always remains vertical, and guaranteeing the coaxiality of the installation.

[0015] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the upper surface of the support ring is provided with an anti-slip layer.

[0016] By adopting the above structural scheme, the anti-slip layer on the upper surface of the support ring increases the friction with the bearing outer sleeve, preventing the support ring from undergoing circumferential or radial displacement during the installation of the bearing outer sleeve. This provides a fixed reference for the alignment of the high-speed shaft and the self-aligning roller bearing, reducing installation deviations caused by the displacement of the bearing outer sleeve.

[0017] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the inner wall of the support ring has several lubrication grooves.

[0018] With the above structural design, the lubrication groove on the inner wall of the support ring can store lubricant (such as lubricating oil or grease), forming a lubricating film when the outer ring of the self-aligning roller bearing enters the outer sleeve of the bearing, reducing the frictional resistance of the contact surface between the two and reducing surface damage such as scratches and pulls.

[0019] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the lubrication groove includes several vertical grooves, and the extension direction of each vertical groove is parallel to the axis of the support ring.

[0020] With the above structural design, the vertical groove is parallel to the center line of the support ring. When the high-speed shaft and the self-aligning roller bearing fall vertically, the lubricant in the groove can be continuously replenished to the contact surface of the outer ring of the self-aligning roller bearing and the inner wall of the bearing outer sleeve as the high-speed shaft moves, ensuring lubrication throughout the entire installation stroke.

[0021] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the lubrication groove includes a circumferential groove, which is arranged along the circumferential direction of the support ring and is connected to the vertical groove.

[0022] With the above structural design, the circumferential groove and the vertical groove are connected to form a mesh channel, which allows the lubricant to be evenly diffused circumferentially on the inner wall of the support ring, and to replenish the lubricant for the vertical groove.

[0023] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the high-speed shaft bearing outer kit mounting device also includes a laser pointer, the tail end of which is connected to a screw, the screw being used to connect to a threaded lifting hole on the bottom end face of the high-speed shaft; a circular calibration component coaxially arranged with the support ring is connected to the base, and a circular calibration hole is opened at the center of the calibration component.

[0024] By adopting the above structural scheme, the coaxiality of the high-speed shaft and the bearing outer assembly can be intuitively determined by whether the laser passes through the calibration hole. There is no need to rely on the worker's experience and visual inspection. The deviation can be quickly located by the laser reference, which shortens the calibration time and improves the installation efficiency.

[0025] As a preferred implementation of a high-speed shaft bearing outer kit mounting device, the upper surface of the calibration piece is provided with concentric annular scale lines, with the calibration hole as the center, the spacing between adjacent scale lines is 5mm, and the surface of the scale lines is coated with a fluorescent coating.

[0026] Using the above structural design, the concentric ring-shaped graduations, spaced 5mm apart, can accurately display the direction and amount of offset of the high-speed shaft, facilitating targeted adjustments. The fluorescent coating ensures the graduations remain clearly visible even in dimly lit workshop environments, improving the applicability and accuracy of calibration operations.

[0027] The beneficial effects of this utility model include:

[0028] This invention uses a support ring of a fixed frame to support the bearing outer assembly, preventing rotation of the bearing outer assembly. The support ring's axis is vertically aligned. Before installation, the outer ring of the self-aligning roller bearing is adjusted to ensure it is level. Using a crane and eye bolts, the high-speed shaft and self-aligning roller bearing are vertically lifted. During installation, the weight of the high-speed shaft and the outer ring of the self-aligning roller bearing is even, allowing them to align with the bearing outer assembly and slowly fall. Utilizing the weight of the high-speed shaft and the self-aligning roller bearing, the outer ring of the self-aligning roller bearing is evenly stressed and installed in the bearing outer assembly. After installation, the high-speed shaft, the self-aligning roller bearing, and the bearing outer assembly are lifted out together, achieving vertical installation of the self-aligning roller bearing and the bearing outer assembly. Compared to existing horizontal installation methods, this significantly reduces the time spent on crane operation and improves installation efficiency. It eliminates the need for hammers or rods to strike the bearings, reducing reliance on worker experience and minimizing the risk of damage to the self-aligning roller bearings. Furthermore, as the high-speed shaft and self-aligning roller bearings descend slowly and vertically, it is easier to ensure the coaxiality of the self-aligning roller bearings and the bearing outer casing. The inner wall of the bearing outer casing also automatically restricts the misalignment of the self-aligning roller bearings, further reducing the risk of damage caused by misalignment or impact. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of a high-speed shaft bearing outer kit mounting device according to a specific embodiment of the present utility model;

[0031] Figure 2 This is a three-dimensional structural diagram of the fixing frame in a specific embodiment of this utility model;

[0032] Figure 3 This is a half-sectional view of the support ring in a specific embodiment of the present invention.

[0033] Figure 4 This is a side view of the laser pointer in a specific embodiment of this utility model;

[0034] Figure 5 This is a top view of the calibration component in a specific embodiment of this utility model.

[0035] List of components and reference numerals:

[0036] 1. Eye bolt; 2. Fixing bracket; 21. Base; 211. Longitudinal base plate; 212. Transverse base plate; 22. Support rod; 23. Support ring; 231. Vertical groove; 232. Circumferential groove; 24. Anti-slip layer; 3. Laser pointer; 4. Screw; 5. Calibration component; 51. Calibration hole; 52. Scale line; 6. High-speed shaft; 7. Self-aligning roller bearing; 8. Bearing outer sleeve. Detailed Implementation

[0037] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Reference Figure 1-5 This embodiment proposes a high-speed shaft bearing outer kit mounting device, including a crane (not shown in the figure), eye bolts 1, a fixing frame 2, and a cylindrical laser pointer 3. The fixing frame 2 includes a base 21, which comprises two horizontally arranged longitudinal base plates 211 and two horizontally arranged transverse base plates 212. The longitudinal base plates 211 and transverse base plates 212 are perpendicular to each other, and each longitudinal base plate 211 is connected between two transverse base plates 212. Four vertical support rods 22 are mounted on the base 21. The bottom ends of the four support rods 22 are respectively connected to four connection points formed by the connection of the two longitudinal base plates 211 and the two transverse base plates 212. The top ends of the support rods 22 are connected to the lower surface of a support ring 23. The support rods 22 are evenly arranged around the circumference of the support ring 23, and the axis of the support ring 23 is vertically aligned. An anti-slip layer 24 is provided on the upper surface of the support ring 23. Several lubrication grooves are formed on the inner wall of the support ring 23. The lubrication groove includes several vertical grooves 231, each extending in a direction parallel to the axis of the support ring 23. The lubrication groove also includes a circumferential groove 232, which is arranged along the circumferential direction of the support ring 23 and communicates with the vertical grooves 231.

[0039] The crane includes a hook (not shown in the figure), which is connected to the eye of the eye bolt 1. The threaded rod of the eye bolt 1 is used to connect with the threaded lifting hole on the top end face of the high-speed shaft 6.

[0040] The tail end of the laser pointer 3 is coaxially connected to the screw 4, which is used to connect to the threaded lifting hole on the bottom end face of the high-speed shaft 6. A circular calibration component 5, coaxially arranged with the support ring 23, is connected to the base 21. A circular calibration hole 51 is opened at the center of the calibration component 5. The upper surface of the calibration component 5 is provided with concentric annular scale lines 52, with the calibration hole 51 as the center. The spacing between adjacent scale lines 52 is 5mm, and the surface of the scale lines 52 is coated with a fluorescent coating.

[0041] In this embodiment, the self-aligning roller bearing 7 weighs approximately 100 kg, and the high-speed shaft 6 weighs approximately 600 kg. Before installation, the outer ring of the self-aligning roller bearing 7 is adjusted. Slowly moving the self-aligning roller bearing 7 and the high-speed shaft 6 ensures that the outer ring of the self-aligning roller bearing 7 remains horizontal. After aligning the self-aligning roller bearing 7 and the high-speed shaft 6 with the bearing outer sleeve 8, the self-aligning roller bearing 7 and the high-speed shaft 6 are slowly lowered. The weight of the self-aligning roller bearing 7 and the high-speed shaft 6 allows the self-aligning roller bearing 7 to be evenly loaded into the bearing outer sleeve 8. In traditional horizontal installation, when the outer ring of the self-aligning roller bearing 7 is not skewed, a gentle, even tap is sufficient to embed the self-aligning roller bearing 7 into the bearing outer sleeve 8. The tapping force must be evenly distributed on the self-aligning roller bearing 7 to ensure that the outer ring does not rotate or skew during installation. If the outer ring of the self-aligning roller bearing 7 is skewed, a larger tapping force is required, and it is easy to cause damage.

[0042] Work process:

[0043] Place the bearing outer assembly 8 on the support ring 23 of the fixing frame 2, and use the anti-slip layer 24 on the upper surface of the support ring 23 to prevent the bearing outer assembly 8 from sliding; add lubricant to the lubrication groove on the inner wall of the support ring 23.

[0044] Install the high-speed shaft 6 and the self-aligning roller bearing 7 together. Connect the threaded lifting hole at the top of the high-speed shaft 6 to the crane hook using the eye bolt 1. At the same time, install the laser pointer 3 at the threaded lifting hole at the bottom of the high-speed shaft 6 using the screw 4, ensuring that the laser pointer 3 is coaxial with the high-speed shaft 6.

[0045] Turn on the laser pointer 3 and observe whether the laser emitted by it passes through the calibration hole 51 of the calibration component 5 on the base 21. If it does not pass through, adjust the travel position according to the position of the laser on the concentric ring scale line 52 to correct the offset of the high-speed shaft 6 until the laser passes through the calibration hole 51, ensuring that the high-speed shaft 6 is coaxial with the support ring 23 and the bearing outer sleeve 8.

[0046] After calibration, the crane is operated to lower the high-speed shaft 6 and the self-aligning roller bearing 7 vertically and slowly. The outer ring of the self-aligning roller bearing 7 is evenly stressed under the action of gravity. As the self-aligning roller bearing 7 smoothly enters the bearing outer assembly 8 along the lubrication groove on the inner wall of the support ring 23, the gravity of the high-speed shaft 6 and the self-aligning roller bearing 7 is used to install the self-aligning roller bearing 7 into the bearing outer assembly 8.

[0047] After the self-aligning roller bearing 7 is fully installed into the bearing outer assembly 8, the high-speed shaft 6, the self-aligning roller bearing 7, and the bearing outer assembly 8 are lifted out as a whole by a crane.

[0048] In this embodiment, even without the laser pointer 3, after the high-speed shaft 6, the self-aligning roller bearing 7 and the bearing outer sleeve 8 are roughly aligned, the bearing outer sleeve 8 can automatically restrict the self-aligning roller bearing 7 after the high-speed shaft 6 and the self-aligning roller bearing 7 slowly descend, so that the self-aligning roller bearing 7 and the bearing outer sleeve 8 are coaxial.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-speed shaft bearing outer assembly mounting device, comprising a crane, eye bolts (1), and a fixing bracket (2), characterized in that, The fixed frame (2) includes a base (21), on which a vertical support rod (22) is installed. The top end of the support rod (22) is connected to the lower surface of the support ring (23), and the axis of the support ring (23) is set vertically. The crane includes a hook, which is connected to the eye of the eye bolt (1). The threaded rod of the eye bolt (1) is used to connect with the threaded lifting hole on the top end face of the high-speed shaft (6).

2. The high-speed shaft bearing outer sleeve mounting device according to claim 1, characterized in that, Multiple support rods (22) are provided, and the support rods (22) are evenly arranged around the circumferential direction of the support ring (23).

3. The high-speed shaft bearing outer sleeve mounting device according to claim 2, characterized in that, The base (21) includes two horizontally arranged longitudinal base plates (211) and two horizontally arranged transverse base plates (212). The longitudinal base plates (211) and transverse base plates (212) are perpendicular to each other, and each longitudinal base plate (211) is connected between the two transverse base plates (212).

4. The high-speed shaft bearing outer sleeve mounting device according to claim 3, characterized in that, There are four support rods (22), and the bottom ends of the four support rods (22) are respectively connected to the four connection points formed by the connection of two longitudinal base plates (211) and two transverse base plates (212).

5. The high-speed shaft bearing outer sleeve mounting device according to claim 1, characterized in that, The upper surface of the support ring (23) is provided with an anti-slip layer (24).

6. The high-speed shaft bearing outer sleeve mounting device according to claim 1, characterized in that, The inner wall of the support ring (23) has several lubrication grooves.

7. The high-speed shaft bearing outer sleeve mounting device according to claim 6, characterized in that, The lubrication groove includes several vertical grooves (231), and the extension direction of each vertical groove (231) is parallel to the axis of the support ring (23).

8. The high-speed shaft bearing outer sleeve mounting device according to claim 7, characterized in that, The lubrication groove includes a circumferential groove (232), which is arranged along the circumferential direction of the support ring (23), and the circumferential groove (232) is connected to the vertical groove (231).

9. A high-speed shaft bearing outer sleeve mounting device according to claim 1, characterized in that, It also includes a cylindrical laser pointer (3), the tail end of which is coaxially connected to a screw (4), and the screw (4) is used to connect to the threaded lifting hole on the bottom end face of the high-speed shaft (6); a circular calibration piece (5) is connected to the base (21) and is coaxially set with the support ring (23), and a circular calibration hole (51) is opened at the center of the calibration piece (5).

10. A high-speed shaft bearing outer sleeve mounting device according to claim 9, characterized in that, The upper surface of the calibration piece (5) is provided with concentric ring scale lines (52), the scale lines (52) are centered on the calibration hole (51), the spacing between adjacent scale lines (52) is 5mm, and the surface of the scale lines (52) is coated with a fluorescent coating.

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