A bearing mounting device

Abstract

The utility model relates to bearing installation technical field especially, relates to a bearing installation device. The application embodiment provides a bearing installation device, be applied to centrifugal fan, and the centrifugal fan includes spindle and the bearing assembled in the spindle. Bearing installation device includes propulsion cover and force receiving member. Propulsion cover swing setting is in the spindle, and propulsion cover is located one side of bearing, and propulsion cover is pasted in bearing. Force receiving member swing setting is in the spindle, and force receiving member is located the side of propulsion cover far from bearing, and force receiving member is pasted in propulsion cover, and force receiving member can move relative to the spindle under the condition of force, to push bearing to installation position through propulsion cover. The application provides a bearing installation device, under the transition effect of propulsion cover, can reduce the force that bearing receives, improves the situation that the retainer of bearing is easily damaged, and because propulsion cover separates bearing and force receiving member, therefore can reduce the metal scrap that force receiving member stress that enters the inside of bearing produces, guarantees the normal operation of bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing installation technology, and in particular to a bearing installation device. Background Technology

[0002] Centrifugal fans typically use deep groove ball bearings internally. During bearing replacement, due to interference from the fan's main structure or environmental factors, a common method is to use a hammer or a flat chisel to directly drive the bearing into position. However, this method can easily damage the bearing cage, rendering the bearing unusable. Alternatively, failure to detect bearing damage in time can pose a risk to equipment operation and cause fan shutdowns. Furthermore, metal debris may remain inside the bearing during the driving process, leading to abnormal bearing operation. Utility Model Content

[0003] This application provides a bearing mounting device, which to some extent improves the technical problems in related technologies where the bearing cage is easily damaged during impact, the bearing is scrapped, and metal debris may remain inside the bearing.

[0004] This application provides a bearing mounting device for a centrifugal fan, the centrifugal fan including a main shaft and a bearing mounted on the main shaft, the bearing mounting device including:

[0005] A pusher sleeve is movably mounted on the main shaft, the pusher sleeve is located on one side of the bearing, and the pusher sleeve is fitted to the bearing;

[0006] A force-bearing component is movably mounted on the main shaft. The force-bearing component is located on the side of the propulsion sleeve away from the bearing. The force-bearing component is in contact with the propulsion sleeve. When a force is applied, the force-bearing component can move relative to the main shaft to push the bearing to the installation position through the propulsion sleeve.

[0007] In some embodiments, the propulsion sleeve includes a propulsion sleeve body and a retaining edge disposed on the outer peripheral surface of the propulsion sleeve body, the propulsion sleeve body being movably sleeved on the main shaft, and the retaining edge being fitted to the bearing.

[0008] In some embodiments, the wall thickness of the propulsion sleeve body is greater than or equal to 4 mm.

[0009] In some embodiments, the force-bearing member is capable of rotating under stress to move relative to the main shaft.

[0010] In some embodiments, the main shaft is provided with an external thread, and the centrifugal fan further includes a limiting nut, which is connected to the external thread. The limiting nut is located on the side of the propulsion sleeve away from the bearing, and the force-bearing component is fixedly installed on the limiting nut.

[0011] In some embodiments, the force-bearing component includes a force-bearing sleeve and a plurality of force-bearing parts. The force-bearing sleeve is fitted onto the limiting nut, and the plurality of force-bearing parts are spaced apart on the outer circumferential surface of the force-bearing sleeve around the central axis of the force-bearing sleeve.

[0012] In some embodiments, a plurality of the force-receiving parts are arranged at equal angular intervals around the central axis of the force-receiving sleeve on the outer peripheral surface of the force-receiving sleeve.

[0013] In some embodiments, the force-bearing part is provided in four parts.

[0014] In some embodiments, the outer peripheral surface of the limiting nut is provided with a groove, and the inner wall of the force-bearing sleeve is provided with a protrusion, which is engaged in the groove.

[0015] In some embodiments, the outer peripheral surface of the limiting nut is welded to the inner wall of the force-bearing sleeve.

[0016] The beneficial effects of this application are as follows:

[0017] In the bearing mounting device provided in this application, since the force-bearing component can move relative to the main shaft under force, so as to push the bearing to the installation position through the push sleeve, the force on the bearing can be reduced under the transition action of the push sleeve, improving the situation where the bearing cage is easily damaged. Furthermore, since the push sleeve separates the bearing and the force-bearing component, the metal debris generated by the force-bearing component entering the bearing can be reduced, ensuring the normal operation of the bearing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0019] Figure 1 A schematic diagram of the propulsion sleeve is shown.

[0020] Figure 2 It shows Figure 1 A half-section view.

[0021] Figure 3 A structural schematic diagram of the stressed component is shown.

[0022] Figure 4 It shows Figure 3 A half-section view.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100-Propulsion sleeve, 110-Propulsion sleeve body, 120-Baffle, 200-Force-bearing component, 210-Force-bearing sleeve, 220-Force-bearing part, 230-Protrusion. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] Please see Figures 1-3This application provides a bearing mounting device for a centrifugal fan, which includes a main shaft and a bearing mounted on the main shaft. The bearing mounting device includes a push-fit sleeve 100 and a force-bearing component 200. The push-fit sleeve 100 is movably mounted on the main shaft, located on one side of the bearing, and fits against the bearing. The force-bearing component 200 is movably mounted on the main shaft, located on the side of the push-fit sleeve 100 away from the bearing, and fits against the push-fit sleeve 100. Under pressure, the force-bearing component 200 can move relative to the main shaft to push the bearing to the mounting position via the push-fit sleeve 100.

[0030] The bearing needs to be assembled onto the spindle from the outside in. When installing the bearing, first install the bearing onto the spindle, then install the push sleeve 100 onto the spindle and press it against the bearing, and then install the force-bearing component 200 onto the spindle and press it against the push sleeve 100. In this way, the force-bearing component 200, the push sleeve 100 and the bearing are arranged sequentially on the spindle from the outside in. Finally, use a striking component such as a hammer to strike the force-bearing component 200, so that the force-bearing component 200 is subjected to force and moves inward on the spindle, thereby pushing the push sleeve 100 to move inward, and then the push sleeve 100 pushes the bearing to move inward until the bearing can no longer move. At this time, the bearing is installed in place.

[0031] In a bearing mounting device provided in this application embodiment, a push sleeve 100 is provided between the bearing and the force-bearing component 200. The push sleeve 100 can play a transition role, that is, the force-bearing component 200 pushes the bearing through the push sleeve 100. Compared with the direct impact on the bearing in related technologies, the force on the bearing can be reduced, and the situation where the bearing cage is easily damaged can be improved.

[0032] Furthermore, since the load-bearing component 200 needs to withstand impacts and requires high strength, it is generally made of metal. During the impact on the load-bearing component 200, metal fragments will be generated. In this embodiment, since the push sleeve 100 separates the bearing and the load-bearing component 200, the amount of metal fragments generated by the load-bearing component 200 entering the bearing can be reduced, thus ensuring the normal operation of the bearing.

[0033] In some embodiments, the propulsion sleeve 100 includes a propulsion sleeve body 110 and a retaining edge 120 disposed on the outer peripheral surface of the propulsion sleeve body 110. The propulsion sleeve body 110 is movably sleeved on the main shaft, and the retaining edge 120 is fitted against the bearing. The retaining edge 120 is disposed around the propulsion sleeve body 110. Since the retaining edge 120 is fitted against the bearing, the contact area between the propulsion sleeve 100 and the bearing can be increased, thereby enabling the propulsion sleeve 100 to better drive the bearing to move.

[0034] Since the force-bearing component 200 needs to push the propulsion sleeve 100 to move in order to move the bearing, the propulsion sleeve 100 is a force-transmitting component. Therefore, the propulsion sleeve 100 needs to be able to withstand a certain force and have high structural strength. If the wall thickness of the propulsion sleeve body 110 is too thin, it will easily deform under stress. Specifically, the wall thickness of the propulsion sleeve body 110 can be greater than or equal to 4mm.

[0035] In some embodiments, the force-bearing member 200 can rotate relative to the main shaft when subjected to force. That is, the striking member can strike the force-bearing member 200 to make it rotate about the main shaft, so that the force-bearing member 200 moves while rotating, thereby pushing the bearing to move through the push sleeve 100.

[0036] It needs to be explained that the centrifugal fan includes an electric motor for driving the main shaft. The force-bearing component 200 needs to move axially along the main shaft to push the bearing to the installation position. However, if the impact component strikes the force-bearing component 200 along the axial direction of the main shaft, the electric motor needs to be moved away to allow sufficient space for the impact component to move. However, after the bearing is installed, the electric motor needs to be moved back to its original position, and the electric motor and the fan need to be aligned using a dial indicator, which increases the workload.

[0037] In this embodiment, since the striking member needs to strike the force-receiving member 200 to make the force-receiving member 200 rotate around the main shaft, the striking member can strike the force-receiving member 200 in the radial direction to make the force-receiving member 200 rotate around the main shaft, without having to strike the force-receiving member 200 in the axial direction of the main shaft. This eliminates the need to move the motor and reduces the workload.

[0038] In some embodiments, the main shaft is provided with external threads, and the centrifugal fan also includes a limit nut, which is connected to the external threads. The limit nut is located on the side of the propulsion sleeve 100 away from the bearing, and the force-bearing component 200 is fixedly installed on the limit nut.

[0039] The limit nut is connected to the external thread on the spindle to achieve the installation of the limit nut on the spindle. The limit nut is used to limit the bearing. Since the force-bearing component 200 is fixedly installed on the limit nut, the force-bearing component 200 is set on the spindle. When installing the force-bearing component 200, first assemble the force-bearing component 200 and the limit nut as a whole, and then screw the limit nut to the spindle. Subsequently, the force-bearing component 200 can be driven to rotate by striking the force-bearing component 200. The force-bearing component 200 drives the limit nut to rotate. Under the thread transmission between the limit nut and the external thread on the spindle, the force-bearing component 200 moves along the spindle, thereby pushing the push sleeve 100 to move, and thus pushing the bearing to move.

[0040] Please see Figure 3 and Figure 4In some embodiments, the force-bearing member 200 includes a force-bearing sleeve 210 and a plurality of force-bearing parts 220. The force-bearing sleeve 210 is sleeved on the limiting nut, and the plurality of force-bearing parts 220 are spaced apart on the outer peripheral surface of the force-bearing sleeve 210 around the central axis of the force-bearing sleeve 210.

[0041] The force-bearing sleeve 210 is fitted onto the limiting nut to achieve a fixed assembly between the force-bearing component 200 and the limiting nut. Since multiple force-bearing parts 220 are spaced apart around the central axis of the force-bearing sleeve 210 on its outer circumferential surface, when the striking component strikes any one of the force-bearing components 200 along the circumferential direction of the force-bearing sleeve 210, the force-bearing sleeve 210 will rotate around the main shaft, thereby causing the limiting nut to rotate.

[0042] Specifically, multiple force-receiving parts 220 are arranged at equal angles around the central axis of the force-receiving sleeve 210 on the outer peripheral surface of the force-receiving sleeve 210. Four force-receiving parts 220 may be provided, and the force-receiving parts 220 may be elongated plate-shaped structures to facilitate the striking component to apply force to the force-receiving parts 220.

[0043] In some embodiments, the outer peripheral surface of the limiting nut is provided with a groove, and the inner wall of the force-bearing sleeve 210 is provided with a protrusion 230. The protrusion 230 is engaged in the groove to achieve the fixed assembly of the force-bearing sleeve 210 and the limiting nut. The cooperation between the groove and the protrusion 230 restricts the relative movement of the limiting nut and the force-bearing sleeve 210 in the radial direction.

[0044] Specifically, the outer circumferential surface of the limiting nut has four slots, and the inner wall of the force-bearing sleeve 210 has four corresponding protrusions 230. Each protrusion 230 engages with the corresponding slot, improving the connection stability between the force-bearing sleeve 210 and the limiting nut. The limiting nut can be a slotted round nut with four built-in slots.

[0045] In some embodiments, the outer peripheral surface of the limiting nut is welded to the inner wall of the force-bearing sleeve 210, thereby restricting the relative movement of the limiting nut and the force-bearing sleeve 210 in the axial direction, further improving the connection stability between the force-bearing sleeve 210 and the limiting nut.

[0046] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A bearing mounting device applied to a centrifugal fan, the centrifugal fan comprising a main shaft and a bearing mounted on the main shaft, characterized in that, The bearing mounting device includes: A pusher sleeve is movably mounted on the main shaft, the pusher sleeve is located on one side of the bearing, and the pusher sleeve is fitted to the bearing; A force-bearing component is movably mounted on the main shaft. The force-bearing component is located on the side of the propulsion sleeve away from the bearing. The force-bearing component is in contact with the propulsion sleeve. When a force is applied, the force-bearing component can move relative to the main shaft to push the bearing to the installation position through the propulsion sleeve.

2. The bearing mounting device according to claim 1, characterized in that, The propulsion sleeve includes a propulsion sleeve body and a retaining edge disposed on the outer peripheral surface of the propulsion sleeve body. The propulsion sleeve body is movably sleeved on the main shaft, and the retaining edge is attached to the bearing.

3. The bearing mounting device according to claim 2, characterized in that, The wall thickness of the propulsion sleeve body is greater than or equal to 4 mm.

4. The bearing mounting device according to any one of claims 1-3, characterized in that, The force-bearing component can rotate to move relative to the main shaft when subjected to force.

5. The bearing mounting device according to claim 4, characterized in that, The main shaft is provided with an external thread, and the centrifugal fan also includes a limiting nut. The limiting nut is connected to the external thread and is located on the side of the propulsion sleeve away from the bearing. The force-bearing component is fixedly installed on the limiting nut.

6. The bearing mounting device according to claim 5, characterized in that, The force-bearing component includes a force-bearing sleeve and multiple force-bearing parts. The force-bearing sleeve is fitted onto the limiting nut, and the multiple force-bearing parts are spaced apart on the outer circumferential surface of the force-bearing sleeve around the central axis of the force-bearing sleeve.

7. The bearing mounting device according to claim 6, characterized in that, Multiple force-receiving parts are arranged at equal angles around the central axis of the force-receiving sleeve on the outer peripheral surface of the force-receiving sleeve.

8. The bearing mounting device according to claim 7, characterized in that, The force-bearing part has four components.

9. The bearing mounting device according to claim 6, characterized in that, The outer circumferential surface of the limiting nut is provided with a groove, and the inner wall of the force-bearing sleeve is provided with a protrusion, which is engaged in the groove.

10. The bearing mounting device according to claim 9, characterized in that, The outer circumferential surface of the limiting nut is welded to the inner wall of the force-bearing sleeve.

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