Multi-position synchronous disassembly and assembly jig for bearing sleeve

Abstract

The utility model provides a multi-position synchronous assembling and disassembling jig of a bearing sleeve, which comprises a shell, a central gear and a plurality of planetary gears, the central gear and the planetary gears are assembled in the shell, the central gear is rotatably assembled in the middle position, and a rotating shaft of the central gear is exposed out of the upper surface of the shell to form a first driving part; the plurality of planetary gears are rotatably arranged on the periphery of the central gear and are meshed with the central gear; and rotating shafts of the plurality of planetary gears respectively extend out of the lower surface of the shell to form a second driving part. A plurality of fixing screws of the bearing sleeve can be synchronously operated, so that the plurality of fixing screws synchronously advance and retreat; only one-time operation is needed, a large number of repeated steps are omitted in installation, the operation steps are greatly simplified, and the operation time is greatly saved. And the jig is simple in structure, stable in transmission and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of tooling fixtures, and particularly relates to a multi-position synchronous disassembly and assembly fixture for a bearing sleeve. Background Technique

[0002] As Figure 1 shown in the figure, an existing bearing device includes a bearing sleeve 1, a bearing 3 assembled in the bearing sleeve 1, and a bearing gland 4 covering the bearing sleeve 1; the bearing device is fixed to an external structure through six fixing screws 2 provided on the bearing sleeve 1; the bearing gland 4 is also locked to the bearing sleeve 1 by screws, and a relief hole 5 corresponding to the fixing screw 2 is provided on the bearing gland 4. In order to ensure the compactness of the structure, the installation space of the bearing sleeve 1 and the bearing gland 4 will not be made very large. At the same time, in order to ensure a smooth transition of the pressure of the screw of the bearing gland 4 on the bearing gland 4, the diameter of the relief hole 5 cannot be made large. Currently, the relief hole 5 can only be designed to be the size for a tool to extend into. Therefore, the moving space of the fixing screw 2 in the bearing sleeve 1 is limited (taking 2 mm as an example), and a wrench or a screwdriver passes through the relief hole 5 of the bearing gland 4 to operate on the fixing screw 2. When the existing wrench disassembles and assembles the bearing sleeve 1, it can only first withdraw one fixing screw 2 by 2 mm, and then withdraw the next fixing screw 2 by 2 mm, and repeat this among the six fixing screws 2 until all the fixing screws 2 are withdrawn from the thread. During installation, only one fixing screw 2 can be screwed in by 2 mm first, and repeat this among the six fixing screws 2 until all the fixing screws 2 are tightened. This process is repetitive, and each repetition is only 2 mm. If the distance is not well controlled when loosening and tightening the fixing screw 2, the number of repetitions will increase, and the disassembly and assembly time is long. Content of the Utility Model

[0003] Therefore, to solve the above problems, the utility model provides a multi-position synchronous disassembly and assembly fixture for a bearing sleeve, which is particularly suitable for the disassembly and assembly of the above-mentioned bearing sleeve.

[0004] To achieve the above object, the technical solution provided by the utility model is as follows:

[0005] A multi-position synchronous disassembly and assembly fixture for a bearing sleeve includes a housing and a central gear and a plurality of planetary gears assembled in the housing. The central gear is rotatably assembled at the middle position, and the rotation shaft of the central gear is exposed on the upper surface of the housing to form a first driving part; a plurality of planetary gears are rotatably arranged around the central gear and mesh with the central gear; the rotation shafts of the plurality of planetary gears respectively extend out of the lower surface of the housing to form a second driving part.

[0006] Further, the first driving part is a slotted drive, a Phillips drive, a hexagon socket or a hexagon head.

[0007] Further, the second driving part is a flat blade, a Phillips screwdriver bit, an internal hexagon head or an external hexagon head.

[0008] Furthermore, the shell includes an upper end cover and a lower end cover, which are fixed together and enclosed to form an installation cavity, and the central gear and multiple planetary gears are assembled in the installation cavity; a middle part of the upper end cover is provided with a clearance opening to allow the first driving part to be exposed; and the rotating shafts of the multiple planetary gears extend out of the lower end cover respectively.

[0009] Furthermore, a sealing fit is formed between the upper end cover and the lower end cover.

[0010] Furthermore, the rotating shaft of the central gear forms a rotatable sealing fit with the housing; the rotating shaft of the planetary gear forms a rotatable sealing fit with the housing.

[0011] Furthermore, the first driving portion is a hexagonal hole, and a middle portion of the lower end cover is also provided with a clearance opening to allow the inner hexagonal hole to be exposed.

[0012] Furthermore, the number of the planetary gears is six and they are evenly distributed on the periphery of the central gear.

[0013] The technical solution provided by the utility model has the following beneficial effects:

[0014] By adopting this solution, when disassembling and assembling the bearing sleeve of the above-mentioned bearing device, the second driving part of the multiple planetary gears extending out of the housing is passed through the bearing gland and matched with the fixing screws of the bearing sleeve; then, the operating tool is matched with the first driving part, and the central gear is driven to rotate, thereby driving the multiple planetary gears to rotate synchronously, so that the multiple fixing screws of the bearing sleeve can be operated synchronously, and the multiple fixing screws can be moved forward and backward synchronously; only one operation is required, which saves a lot of repeated steps in installation, greatly simplifies the operation steps and saves operation time. In addition, the fixture has a simple structure, stable transmission, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of the structure of the bearing device;

[0016] Figure 2 The figure is a three-dimensional schematic diagram of a multi-position synchronous disassembly and assembly fixture of a bearing sleeve in an embodiment. Figure 1 ;

[0017] Figure 3 The figure is a three-dimensional schematic diagram of a multi-position synchronous disassembly and assembly fixture of a bearing sleeve in an embodiment. Figure 2 ;

[0018] Figure 4 The figure shows a cross-sectional view of a multi-position synchronous disassembly and assembly fixture of a bearing sleeve in an embodiment;

[0019] Figure 5The figure shows a schematic exploded view of the multi-position synchronous disassembly and assembly fixture for the bearing sleeve in the embodiment;

[0020] Figure 6 The figure shows a schematic view of the cooperation between the multi-position synchronous disassembly and assembly fixture for the bearing sleeve and the bearing device;

[0021] Figure 7 The figure shows a schematic view of the use state of the multi-position synchronous disassembly and assembly fixture for the bearing sleeve. Specific Embodiments

[0022] To further illustrate each embodiment, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0023] In the description of the present invention, the orientation or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the accompanying drawings, only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0024] Now, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] A multi-position synchronous disassembly and assembly fixture for a bearing sleeve provided in this embodiment is used for disassembling and assembling the bearing sleeve of a bearing device such as Figure 1 . Referring to Figures 2 to 5 shown, the multi-position synchronous disassembly and assembly fixture for the bearing sleeve includes a housing 10 and a central gear 21 and a plurality of planetary gears 22 assembled in the housing 10. Specifically, in this embodiment, the number of planetary gears 22 is six. The central gear 21 is rotatably assembled at the middle position, and the rotating shaft 211 of the central gear 21 is exposed on the upper surface of the housing 10 to form a first driving part; in this specific embodiment, the first driving part is a hexagonal hole 212. The six planetary gears 22 are rotatably arranged around the central gear 21 and mesh with the central gear 21; the rotating shafts 221 of the six planetary gears 22 respectively extend out of the lower surface of the housing 10 to form a second driving part. Specifically, in this embodiment, the second driving part is an external hexagonal head 222, wherein, Figure 1 the fixing screws 2 in the bearing sleeve 1 in

[0026] adopt internal hexagonal slots. Figure 1When disassembling and assembling the bearing sleeve 1 of the bearing device, the second driving parts (i.e., the external hexagonal heads 222) of the six planetary gears 22 protruding from the housing 10 pass through the bearing gland 4 and cooperate with the internal hexagonal grooves of the fixing screws 2 of the bearing sleeve 1. The structure is as Figure 6 shown. After that, the operating tool (specifically, the external hexagonal wrench 100) is fitted to the first driving part (i.e., the hexagonal hole 212), as Figure 7 shown. By manually rotating the external hexagonal wrench 100 to drive the central gear 21 to rotate, the six planetary gears 22 can be driven to rotate synchronously. In this way, the six fixing screws 2 of the bearing sleeve 1 can be operated synchronously, realizing the synchronous advancement and retraction of the six fixing screws 2. Only one operation is required, saving a large number of repeated steps in installation, greatly simplifying the operation steps and saving operation time. Moreover, the fixture has a simple structure, smooth transmission and convenient use.

[0027] Furthermore, in this embodiment, the housing 10 includes an upper end cover 11 and a lower end cover 12. The upper end cover 11 and the lower end cover 12 are covered and fixed together to jointly enclose an installation cavity 101. The central gear 21 and multiple planetary gears 22 are assembled in the installation cavity 101. A relief opening 111 is formed in the middle of the upper end cover 11 for the hexagonal hole 212 to be exposed. The rotating shafts 221 of the six planetary gears 22 respectively protrude from the lower end cover 12. The upper and lower covering method of the upper end cover 11 and the lower end cover 12 has a simple structure. During assembly, the central gear 21 and the planetary gears 22 can be pre-positioned on the lower end cover 12 first, and then the upper end cover 11 can be covered. Specifically, after the upper end cover 11 and the lower end cover 12 are covered, they are locked and fixed by bolts 13.

[0028] A sealing fit is formed between the upper end cover 11 and the lower end cover 12. At the same time, a rotatable sealing fit is formed between the rotating shaft 211 of the central gear 21 and the housing 10. A rotatable sealing fit is formed between the rotating shaft 221 of the planetary gear 22 and the housing 10. In this way, the installation cavity 101 can be formed into a closed chamber, and lubricating oil can be filled to reduce the frictional loss between the gears and make the drive smoother. Specifically, the above sealing fits are all sealed and assembled through sealing rings.

[0029] Furthermore, a relief opening 121 is also formed in the middle of the lower end cover 12 for the hexagonal hole 212 to be exposed. With such a setting, the relief opening 111 of the upper end cover 11, the hexagonal hole 212 and the relief opening 121 of the lower end cover 12 form a vertically penetrating channel. In this way, during the operation process, the internal situation can be observed through the channel, and a thinner tool can also be used to pass through the channel for operation.

[0030] The above discloses the preferred solution in this embodiment. Of course, other embodiments are not limited thereto. For example, the number of planetary gears 22 can be selected according to actual conditions, such as three or four; the first drive part is a structure such as a slot, a cross slot or a hexagonal head that can be matched with existing tools; similarly, the second drive part is a structure such as a slotted head, a cross head or a hexagonal head that can be matched with existing fixing screws. For example, the housing 10 can be implemented with other structures; or the lower end cover 12 is not provided with a structure of a clearance opening 121, etc.

[0031] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A multi-position synchronous disassembly and assembly fixture for a bearing sleeve, characterized in that: It includes a housing, a central gear and a plurality of planetary gears mounted in the housing, wherein the central gear is rotatably mounted in the middle position, and the rotation axis of the central gear is exposed on the upper surface of the housing to form a first driving part; and the plurality of planetary gears are rotatably arranged on the periphery of the central gear and mesh with the central gear; The rotating shafts of the plurality of planetary gears extend out of the lower surface of the housing to form a second driving part.

2. The multi-position synchronous disassembly and assembly jig for the bearing sleeve according to claim 1, wherein: The first driving portion is a slot, a cross slot, a hexagonal hole or a hexagonal head.

3. The multi-bit synchronous disassembly and assembly fixture for the bearing sleeve according to claim 1, characterized in that: The second driving part is a slotted bit, a cross bit, an inner hexagonal head or an outer hexagonal head.

4. The multi-position synchronous disassembly and assembly fixture for the bearing sleeve according to claim 1, wherein: The shell includes an upper end cover and a lower end cover, which are fixed together and enclosed to form an installation cavity, and the central gear and multiple planetary gears are assembled in the installation cavity; a middle part of the upper end cover is provided with a clearance opening to allow the first driving part to be exposed; and the rotating shafts of the multiple planetary gears extend out of the lower end cover respectively.

5. The multi-position synchronous disassembly and assembly jig for the bearing sleeve according to claim 4, wherein: A sealing fit is formed between the upper end cover and the lower end cover.

6. The multi-position synchronous disassembly and assembly fixture for the bearing sleeve according to claim 1 or 4, wherein: The rotating shaft of the central gear forms a rotatable sealing fit with the housing; the rotating shaft of the planetary gear forms a rotatable sealing fit with the housing.

7. The multi-position synchronous disassembly and assembly fixture for the bearing sleeve according to claim 4, wherein: The first driving part is a hexagonal hole, and a middle portion of the lower end cover is also provided with a clearance opening to allow the hexagonal hole to be exposed.

8. The multi-position synchronous disassembly and assembly fixture for the bearing sleeve according to claim 1, wherein: The number of the planetary gears is six and they are evenly distributed on the outer periphery of the central gear.

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