A reinforcing structure for a rotating shaft and a bearing

Abstract

The utility model belongs to bearing technical field, specifically discloses a kind of reinforcing structure of rotating shaft and bearing, including seat body, its inside is provided with bearing body;Fixed sleeve, fixedly connected to one end of bearing body;Multiple stop units, circumferential distribution in the outside of fixed sleeve;Every stop unit includes connecting plate, fixed plate and stop rod, fixed plate is fixedly arranged in the one end of fixed sleeve away from connecting plate, the one end of stop rod is with connecting plate interference fit, other end is with fixed plate sliding connection, multiple threaded holes are set up on fixed sleeve, fixed bolt for fastening is threadedly connected in threaded hole, the inside of fixed bolt is set up with insertion hole, stop rod is slidably arranged in insertion hole, the utility model is set through stop unit, avoid the phenomenon that fixed bolt appears " back silk " because of vibration, to prevent the gap between fixed sleeve and rotating shaft body due to fixed bolt loosening, reduce the rotating shaft wear, bearing loosening and falling problem caused by the relative slip of both.

Description

Technical Field

[0001] This application relates to the field of bearing technology, and more specifically, to a reinforcement structure for a shaft and bearing. Background Technology

[0002] As a key component in mechanical equipment, the core function of bearings is to support the rotating shaft and reduce its coefficient of friction during movement, while ensuring the rotational accuracy of the shaft. In common assembly structures, the inner ring of the bearing is connected to the rotating shaft through a tight fit, usually by direct fixing with a set screw—that is, by screwing the set screw into a threaded hole in the side wall of the bearing inner ring, so that its end is tightly pressed against the surface of the rotating shaft, and the radial pressure is used to lock the inner ring and the rotating shaft together, preventing them from sliding relative to each other.

[0003] The set screw fixing causes the high-frequency vibration and load fluctuation of the bearing to easily lead to the attenuation of the set screw preload after long-term operation. This causes relative sliding between the inner ring of the bearing and the shaft. During the slippage process, the mating surfaces of the two continue to rub against each other, causing wear on the shaft surface and weakening the structural strength of the shaft. Utility Model Content

[0004] To address the aforementioned problems, this application provides a reinforcement structure for the shaft and bearing.

[0005] The reinforcement structure for a rotating shaft and bearing provided in this application adopts the following technical solution: A reinforcing structure for a shaft and bearing includes a base, inside which a bearing body is disposed; A fixed sleeve is fixedly connected to one end of the bearing body; Multiple stop units are circumferentially distributed on the outside of the fixed sleeve; Each stop unit includes a connecting plate, a fixed plate, and a stop rod. The fixed plate is fixedly installed at the end of the fixed sleeve away from the connecting plate. One end of the stop rod is interference-fitted with the connecting plate, and the other end is slidably connected to the fixed plate.

[0006] Through the above technical solution, the stop unit avoids the phenomenon of "unscrewing" of the fixing bolts due to vibration, thereby preventing gaps from forming between the fixing sleeve and the rotating shaft body due to loose fixing bolts, reducing the problems of rotating shaft wear and bearing loosening and falling off caused by relative slippage between the two.

[0007] Furthermore, the fixed sleeve has multiple threaded holes, and the threaded holes are connected to the fixing bolts for fastening.

[0008] Furthermore, the fixing bolt has an insertion hole inside, and the stop rod is slidably disposed in the insertion hole.

[0009] Furthermore, each connecting plate is fixedly connected to a fixed sleeve, and the fixed sleeve has a rotating shaft body inside.

[0010] Furthermore, the rotating shaft body and the fixed sleeve are connected by multiple fixing bolts.

[0011] Furthermore, an extension ring is fixed to one end of the rotating shaft body, and a shaft is fixed to the end of the extension ring opposite to the rotating shaft body. A connecting sleeve is provided on the outer sleeve of the shaft.

[0012] Furthermore, the outer wall of the shaft has multiple grooves, and the diameter of the shaft is smaller than that of the extension ring.

[0013] Through the above technical solution, the multiple grooves opened on the outer wall of the shaft can provide buffer space for the deformation of the shaft when the shaft body is heated during operation and undergoes axial or radial expansion, thus preventing the expansion force from being directly transmitted to the connecting sleeve and extending the service life of the overall structure.

[0014] Furthermore, at least two mounting holes for installation and fixing are provided at each end of the base.

[0015] In summary, this application includes at least one of the following beneficial technical effects: (1) By setting the stop unit, this utility model avoids the phenomenon of "unscrewing" of the fixing bolt due to vibration, thereby preventing the gap between the fixing sleeve and the rotating shaft body due to the loosening of the fixing bolt, reducing the problem of rotating shaft wear and bearing loosening and falling off caused by the relative slippage between the two. (2) The multiple grooves opened on the outer wall of the shaft of this utility model can provide a buffer space for the deformation of the shaft when the shaft body is heated during operation and generates axial or radial expansion, so as to avoid the expansion force being directly transmitted to the connecting sleeve and extend the service life of the overall structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the connection structure between the shaft and the extension ring of this utility model; Figure 4 This is a top view of the present invention; Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0017] Explanation of reference numerals in the attached drawings: 1. Base; 2. Shaft body; 3. Connecting sleeve; 4. Shaft; 5. Groove; 6. Extension ring; 7. Fixing sleeve; 8. Bearing body; 9. Fixing bolt; 10. Connecting plate; 11. Stop rod; 12. Fixing plate; 13. Mounting hole. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] Reference Figures 1-5 A reinforcing structure for a rotating shaft and bearing includes a base 1, inside which a bearing body 8 is disposed; The fixed sleeve 7 is fixedly connected to one end of the bearing body 8; Multiple stop units are circumferentially distributed on the outside of the fixed sleeve 7; Each stop unit includes a connecting plate 10, a fixing plate 12, and a stop rod 11. The fixing plate 12 is fixedly disposed at the end of the fixing sleeve 7 away from the connecting plate 10. One end of the stop rod 11 is interference-fitted with the connecting plate 10, and the other end is slidably connected to the fixing plate 12.

[0020] During installation, the bearing body 8 is first installed inside the housing 1. Then, the rotating shaft body 2 and its fixed connecting shaft 4 are placed in the bearing body 8 and aligned. After that, the fixing bolt 9 is screwed into the pre-set threaded hole of the fixing sleeve 7, and its end directly abuts against the outer wall of the rotating shaft body 2. The radial pressure makes the fixing sleeve 7 and the rotating shaft body 2 form a tight fit, preventing the two from sliding relative to each other.

[0021] After the fixing bolt 9 is installed, its internal through hole corresponds exactly to the through holes on the connecting plate 10 and the fixing plate 12. At this time, one end of the stop rod 11 is inserted into the connecting plate 10 through the through hole of the fixing bolt 9, and the circumferential rotation of the fixing bolt 9 is restricted by radial constraint.

[0022] By setting the stop unit, the fixing bolt 9 is prevented from "unscrewing" due to vibration, thereby preventing gaps from forming between the fixing sleeve 7 and the rotating shaft body 2 due to the loosening of the fixing bolt 9, reducing the problems of rotating shaft wear and bearing loosening and falling off caused by relative slippage between the two.

[0023] Reference Figures 1-5 The fixed sleeve 7 has multiple threaded holes, and a fixing bolt 9 for fastening is threaded into the threaded holes. The fixing bolt 9 has an insertion hole inside, and the stop rod 11 is slidably disposed in the insertion hole. Each connecting plate 10 is fixedly connected to the fixed sleeve 7. The fixed sleeve 7 has a rotating shaft body 2 inside, and the rotating shaft body 2 is connected to the fixed sleeve 7 by multiple fixing bolts 9.

[0024] When it is necessary to replace the shaft body 2 or the bearing body 8, first use a pin puller or other tools to pull the stop rod 11 out of the mating hole of the connecting plate 10 to release its circumferential constraint on the fixing bolt 9. Then use a wrench to loosen all the fixing bolts 9 in the circumference of the fixing sleeve 7 counterclockwise so that the radial locking force between the fixing sleeve 7 and the shaft body 2 disappears. Take out the shaft body 2, and then take out the bearing body 8.

[0025] Reference Figures 2-3 An extension ring 6 is fixed to one end of the rotating shaft body 2. A shaft 4 is fixed to the end of the extension ring 6 away from the rotating shaft body 2. A connecting sleeve 3 is fitted over the shaft 4. Multiple grooves 5 are provided on the outer wall of the shaft 4. The diameter of the shaft 4 is smaller than that of the extension ring 6.

[0026] One end of the extension ring 6 is fixed to the shaft body 2 as a whole, and the other end is rigidly connected to the shaft 4. Its diameter is larger than that of the shaft 4, forming an axial step. This not only provides axial restraint for the connecting sleeve 3 sleeved on the outside of the shaft 4, preventing the connecting sleeve 3 from moving towards the shaft body 2, but also disperses the load transmitted by the connecting sleeve 3 through the step surface, avoiding breakage at the connection between the shaft body 2 and the shaft 4 due to local stress concentration. After being sleeved on the outside of the shaft 4, it enables the power transmission between the shaft body 2 and external components. The multiple grooves 5 on the outer wall of the shaft 4 can provide a buffer space for the deformation of the shaft 4 when the shaft body 2 expands axially or radially due to the temperature rise during operation, thus preventing the expansion force from being directly transmitted to the connecting sleeve 3 and extending the service life of the overall structure.

[0027] Reference Figures 1-2 At least two mounting holes 13 for installation and fixing are provided at both ends of the base body 1.

[0028] Working principle: First, the structure is installed. The base 1 is fixed to the equipment frame through the mounting holes 13 at both ends, providing basic support for the whole. Then, the bearing body 8 is installed inside the base 1. Next, the rotating shaft body 2 and the shaft center 4 are aligned with the inner ring of the bearing body 8 and inserted. Then, multiple fixing bolts 9 are screwed into the pre-set threaded holes of the fixing sleeve 7 until the bolt ends are pressed against the outer wall of the rotating shaft body 2. The fixing sleeve 7 and the rotating shaft body 2 are tightly fitted through radial pressure. Finally, one end of the stop rod 11 is passed through the insertion hole inside the fixing bolt 9 and forms an interference fit with the connecting plate 10 in the stop unit distributed circumferentially on the outside of the fixing sleeve 7. The circumferential rotation of the fixing bolt 9 is restricted by radial constraint.

[0029] When the equipment is running, the bearing body 8 provides rotational support for the shaft body 2 to ensure its rotational accuracy; the cooperation between the fixed sleeve 7 and the fixed bolt 9 prevents relative sliding between the shaft body 2 and the bearing body 8, while the stop rod 11 prevents the fixed bolt 9 from "unscrewing" due to vibration, and prevents the gap between the two from causing slippage, wear or loosening and falling of the bearing.

[0030] When it is necessary to replace the shaft body 2 or the bearing body 8, first use a tool to pull out the stop rod 11 to release the constraint on the fixing bolts 9, then loosen all the fixing bolts 9 to eliminate the locking force between the fixing sleeve 7 and the shaft body 2. Remove the shaft body 2, and then separate the bearing body 8 for replacement. After replacement, reverse the installation process to restore the operating function.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reinforcement structure for a rotating shaft and bearing, characterized in that, include: The seat (1) has a bearing body (8) inside it; A fixed sleeve (7) is fixedly connected to one end of the bearing body (8); Multiple stop units are circumferentially distributed on the outside of the fixed sleeve (7); Each of the stop units includes a connecting plate (10), a fixing plate (12) and a stop rod (11). The fixing plate (12) is fixedly disposed at one end of the fixing sleeve (7) away from the connecting plate (10). One end of the stop rod (11) is interference-fitted with the connecting plate (10), and the other end is slidably connected to the fixing plate (12).

2. The reinforcement structure for a rotating shaft and bearing according to claim 1, characterized in that: The fixed sleeve (7) has multiple threaded holes, and the threaded holes are threaded with fixing bolts (9) for fastening.

3. The reinforcement structure for a rotating shaft and bearing according to claim 2, characterized in that: The fixing bolt (9) has an insertion hole inside, and the stop rod (11) is slidably disposed in the insertion hole.

4. The reinforcement structure for a rotating shaft and bearing according to claim 1, characterized in that: Each of the connecting plates (10) is fixedly connected to the fixed sleeve (7), and the fixed sleeve (7) has a rotating shaft body (2) inside.

5. The reinforcement structure for a rotating shaft and bearing according to claim 4, characterized in that: The rotating shaft body (2) is connected to the fixed sleeve (7) by multiple fixing bolts (9).

6. The reinforcement structure for a rotating shaft and bearing according to claim 4, characterized in that: An extension ring (6) is fixed to one end of the rotating shaft body (2), and a shaft (4) is fixed to the end of the extension ring (6) away from the rotating shaft body (2). A connecting sleeve (3) is provided on the shaft (4).

7. The reinforcement structure for a rotating shaft and bearing according to claim 6, characterized in that: The outer wall of the shaft (4) is provided with multiple grooves (5), and the diameter of the shaft (4) is smaller than that of the extension ring (6).

8. The reinforcement structure for a rotating shaft and bearing according to claim 1, characterized in that: At least two mounting holes (13) for installation and fixing are respectively provided at both ends of the base (1).

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