Device for disassembling bearing by using bearing oil return groove

Abstract

The utility model belongs to the technical field of shaft end bearing dismounting mechanisms, and particularly relates to a device for dismounting a bearing by using a bearing oil return groove, which comprises a connecting plate, a bearing seat, a pull rod, a nut and a support rod, one side, far away from the drag hook, of the pull rod is provided with an external thread; the connecting plate is an annular plate and is located outside the bearing seat; the inner side surface of the connecting plate is fixedly connected with the supporting rod; a plurality of threaded through holes are formed in the connecting plate, and a pull rod is in threaded connection with the interior of each threaded through hole; the periphery of the part, outside the connecting plate, of each pull rod is in threaded connection with a nut; a plurality of oil return holes are evenly formed in the bearing seat in the circumferential direction, and one side of the cross section of each oil return hole communicates with an inner cavity, where a bearing is installed, of the bearing seat. Compared with the prior art, the bearing disassembling tool has the advantages that the bearing is disassembled through the oil return hole formed in the bearing seat, and the situation that the inner side wall of the bearing is extruded through a clamping jaw in the prior art is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of shaft end bearing disassembly mechanism, specifically relating to a device for disassembling bearings using the bearing return oil groove. Background Technology

[0002] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas. It is a type of driven fluid machinery. During fan maintenance, it is often necessary to disassemble the bearings, and bearing disassembly devices are frequently required for this process.

[0003] There are many types of bearing disassembly devices on the market today, which can basically meet people's needs. However, there are still some problems. For example, the grippers of the disassembly device squeeze the inner wall of the bearing, and then the lifting screw is rotated. The lifting screw drives the grippers to disassemble the bearing. During this process, the grippers exert great pressure on the inner wall of the bearing, which can easily damage the inner wall of the bearing and affect the fit between the bearing and the shaft. Utility Model Content

[0004] This invention addresses the technical problem of disassembling fan shaft bearings using existing bearing disassembly devices by providing a device that disassembles bearings using a bearing return oil groove.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a device for disassembling a bearing using a bearing oil return groove, comprising a connecting plate, a bearing housing, a pull rod, a nut, and a support rod; a hook is fixedly connected to the end of the pull rod, and the pull rod has an external thread on the side away from the hook; the connecting plate is an annular plate located outside the bearing housing, and the support rod is fixedly connected to the inner surface of the connecting plate; the connecting plate has multiple threaded through holes, and a pull rod is threaded into each threaded through hole; a nut is threaded to the outer circumference of the portion of each pull rod located outside the connecting plate; the bearing housing has multiple oil return holes evenly distributed around its circumference, and one side of the cross-section of each oil return hole communicates with the inner cavity of the bearing housing where the bearing is installed;

[0006] In operation, the hook of the pull rod extends into the oil return hole and hooks onto the inner end face of the bearing. The hook is located in the oil return groove inside the oil return hole; the inner side of the support rod abuts against the outer surface of the bearing seat.

[0007] Preferably, the horizontal projection of the hook is drum-shaped, including two horizontal lines and two arcs, and the diameter of the circle containing the arcs is equal to the diameter of the threaded portion of the pull rod.

[0008] Preferably, the length of the support rod is not less than the thickness of the bearing.

[0009] As preferred, the bearing seat is circumferentially and evenly provided with two or three oil return holes, and the connecting plate is provided with the same number of threaded through holes as the oil return holes.

[0010] As preferred, each of the pull rods is provided with a support rod on each side.

[0011] As preferred, the bearing is internally provided with a rotating shaft, and the nut is a hexagonal nut.

[0012] As preferred, the contact position of the pull hook and the bearing is a plane.

[0013] As preferred, in the working state, the connecting plate is coaxial with the bearing seat.

[0014] As preferred, the thickness of the pull hook is smaller than the distance from the bottom surface of the oil return groove to the inner end surface of the bearing.

[0015] Compared with the prior art, the device has the following advantages and positive effects:

[0016] (1) The device uses the oil return holes provided in the bearing seat to disassemble the bearing, thereby avoiding the use of the clamping jaw to extrude the inner side wall of the bearing in the prior art.

[0017] (2) The pull hook hooks the bearing, the pull rod, the support rod and the nut are connected into a whole through the connecting plate, the support rod supports the end surface of the bearing seat, and the bearing can be pulled out by rotating the nut.

[0018] (3) The device can quickly disassemble the bearing which is not easy to disassemble, thereby greatly improving the disassembly efficiency.

[0019] (4) The length of the support rod is not less than the thickness of the bearing, thereby ensuring that the bearing is completely pulled out by the pull rod.

[0020] (5) The contact position of the pull hook and the bearing is a plane, thereby avoiding the damage of the pull hook to the inner end surface of the bearing.

[0021] (6) Since the horizontal projection of the pull hook is drum-shaped, the pull hook can be inserted into the oil return hole, and the bearing can be hooked by rotating the pull hook after reaching the oil return groove. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description:

[0023] Figure 1 Schematic diagram of the device for disassembling the bearing by using the bearing oil return groove Figure 1 ;

[0024] Figure 2 Schematic diagram of the device for disassembling the bearing by using the bearing oil return groove Figure 2 ;

[0025] Figure 3 Figure 1 is a perspective view of a device for dismounting a bearing using a bearing oil return groove Figure 3 ;

[0026] Figure 4 Figure 2 is a perspective view of a connecting plate and a pull rod in the device for dismounting a bearing using a bearing oil return groove

[0027] Figure 5 Figure 3 is a top view of a bearing seat in the device for dismounting a bearing using a bearing oil return groove

[0028] Figure 6 Figure 4 is a longitudinal cutting direction view of the device for dismounting a bearing using a bearing oil return groove

[0029] Figure 7 Figure 5 is a sectional view of the device for dismounting a bearing using a bearing oil return groove

[0030] Figure 8 Figure 6 is a bottom view of the connecting plate and the pull rod

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1. connecting plate, 2. bearing seat

[0033] 3. pull rod, 31. pull hook

[0034] 4. nut, 5. support rod, 6. oil return hole, 7. rotating shaft, 8. bearing DETAILED DESCRIPTION

[0035] In order to enable a more clear understanding of the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in conjunction with the drawings and embodiments.

[0036] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the present application, however, the present application can be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0037] Embodiment 1

[0038] The following will be described in conjunction with Figures 1-8 Embodiment 1, a device for dismounting a bearing using a bearing oil return groove will be further described, as shown in Figures 1-3 A device for dismounting a bearing using a bearing oil return groove, comprising a connecting plate 1, a bearing seat 2, a pull rod 3, a nut 4 and a support rod 5.

[0039] As shown in Figure 4As shown, the end of the pull rod 3 is fixedly connected with a pull hook 31, and the side of the pull rod 3 away from the pull hook 31 is provided with external threads; the connecting plate 1 is an annular plate and is located outside the bearing seat 2, and the inner side surface of the connecting plate 1 is fixedly connected with a support rod 5; the connecting plate 1 is provided with a plurality of threaded holes, and one pull rod 3 is threadedly connected in each threaded hole; the outer periphery of the part of each pull rod 3 located outside the connecting plate 1 is threadedly connected with a nut 4; as shown Figure 5 As shown, a plurality of oil return holes 6 are evenly and circumferentially provided in the bearing seat 2, and one side of the cross section of the oil return hole 6 is in communication with the inner cavity of the bearing seat 2 in which the bearing 8 is installed.

[0040] As shown Figure 7 As shown, in the working state, the pull hook 31 of the pull rod 3 extends into the oil return hole 6, and the pull hook 31 hooks the inner side surface of the bearing 8, and the pull hook 31 is located in the oil return groove inside the oil return hole 6; the inner side of the support rod 5 abuts against the outer side surface of the bearing seat 2.

[0041] As shown Figure 7 and Figure 8 As shown, the horizontal projection of the pull hook 31 is drum-shaped, including two horizontal lines and two arc lines, and the diameter of the circle on which the arc lines are located is equal to the diameter of the part of the pull rod 3 provided with external threads.

[0042] Since the horizontal projection of the pull hook 31 is drum-shaped, the pull hook 31 can extend into the oil return hole 6 after being rotated by 90 degrees from Figure 4 the state.

[0043] As shown Figure 7 As shown, the length of the support rod 5 is not less than the thickness of the bearing 8.

[0044] As shown Figure 4 and Figure 5 As shown, two oil return holes 6 are evenly and circumferentially provided in the bearing seat 2 (there is no internal thread on the inner surface of the oil return hole 6), and the number of the threaded holes provided in the connecting plate 1 is the same as the number of the oil return holes 6. Figure 5 The dashed line in the figure shows the horizontal projection of the pull rod 3 (the diameter of the part of the pull rod 3 provided with external threads is equal to the diameter of the oil return hole 6), that is, a small part of the horizontal projection of the pull rod 3 overlaps with the horizontal projection of the bearing 8, so that the pull hook 31 can hook the bearing 8.

[0045] As shown Figure 3 As shown, one support rod 5 is arranged on each side of each pull rod 3.

[0046] As shown Figure 4 As shown, the shaft 7 is installed in the bearing 8; and the nut 4 is a hexagonal nut.

[0047] As shown Figure 4 and Figure 7 As shown, the contact position of the pull hook 31 and the bearing 8 is a plane.

[0048] As shown Figure 6As shown, in the working state, the connecting plate 1 and the bearing seat 2 are coaxial.

[0049] like Figure 7 As shown, the thickness of the hook 31 is less than the distance from the bottom surface of the oil return groove to the inner end face of the bearing 8.

[0050] The working principle of this utility model's device for disassembling bearings using the bearing return groove is as follows: When it is necessary to remove the bearing 8 at the end of the rotating shaft 7 from the bearing housing 2, firstly, the pull rod 3, support rod 5, and nut 4 are connected as a whole through the connecting plate 1. The support rod 5 supports the outer end face of the bearing housing 2, and the pull hook 31... Figure 4 The state is rotated 90 degrees, then the hook 31 extends into the oil return hole 6 to reach the oil return groove, and then the hook 31 rotates 90 degrees to change to Figure 4 In this state, the hook 31 hooks onto the inner end face of the bearing 8, and then by turning the nut 4 (tightening direction), the pull rod 3 can be driven to pull the bearing 8 out of the bearing seat 2 (the nut 4 rotates, and the pull rod 3 moves linearly).

[0051] Example 2

[0052] The difference between this embodiment and embodiment 1 is that the bearing housing 2 has three oil return holes 6 evenly spaced around its circumference, and the connecting plate 1 also has three threaded through holes.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A device for disassembling a bearing using a bearing return oil groove, characterized in that, It includes a connecting plate (1), a bearing seat (2), a tie rod (3), a nut (4), and a support rod (5); The end of the pull rod (3) is fixedly connected to a hook (31), and the pull rod (3) has an external thread on the side away from the hook (31); the connecting plate (1) is an annular plate and is located outside the bearing seat (2), and the support rod (5) is fixedly connected to the inner surface of the connecting plate (1); the connecting plate (1) has multiple threaded through holes, and a pull rod (3) is threaded into each threaded through hole; a nut (4) is threaded to the outer circumference of the part of each pull rod (3) located outside the connecting plate (1); the bearing seat (2) has multiple oil return holes (6) evenly opened in the circumference, and one side of the cross-section of the oil return hole (6) is connected to the inner cavity of the bearing seat (2) where the bearing (8) is installed; In the working state, the hook (31) of the pull rod (3) extends into the oil return hole (6) and the hook (31) hooks the inner end face of the bearing (8). The hook (31) is located in the oil return groove inside the oil return hole (6); the inner side of the support rod (5) abuts against the outer surface of the bearing seat (2).

2. The device for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, The horizontal projection of the hook (31) is drum-shaped, including two horizontal lines and two arcs, and the diameter of the circle containing the arcs is equal to the diameter of the threaded part of the rod (3).

3. The device for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, The length of the support rod (5) is not less than the thickness of the bearing (8).

4. The device for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, The bearing housing (2) has two or three oil return holes (6) evenly spaced around its circumference, and the number of threaded through holes on the connecting plate (1) is the same as the number of oil return holes (6).

5. The apparatus for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, Each of the tie rods (3) is provided with a support rod (5) on each side.

6. The apparatus for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, The bearing (8) has a rotating shaft (7) installed inside; the nut (4) is a hexagonal nut.

7. The apparatus for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, The contact position between the hook (31) and the bearing (8) is a plane.

8. The apparatus for disassembling a bearing using a bearing return groove according to claim 1, characterized in that, In operation, the connecting plate (1) is coaxial with the bearing seat (2).

9. The apparatus for disassembling a bearing using a bearing return groove according to claim 7, characterized in that, The thickness of the hook (31) is less than the distance from the bottom surface of the oil return groove to the inner end face of the bearing (8).

Images