Drawing device for disassembling planetary gear

Abstract

The utility model relates to the technical field of dismounting tools, in particular to a puller for dismounting a planetary gear, which comprises a connecting plate and a clamping piece, the clamping piece is connected to the connecting plate, and a pushing surface is arranged on the clamping piece; wherein the pushing surface is arranged towards the connecting plate, and the planetary gear is clamped between the pushing surface and the connecting plate by the pushing surface; the center column is arranged on the connecting plate in a sliding mode in the axial direction of the center column, and the center column abuts against the side wall, facing the connecting plate, of the planetary gear. According to the transmission device, the planetary gear is clamped between the connecting plate and the pushing face, the central column is screwed in, the planetary gear is directly detached from the rotating shaft of the planetary gear along with the connecting plate, and the planetary gear can be easily detached without detaching other components in the transmission device.

Description

Technical Field

[0001] The present application relates to the technical field of disassembly tools, and in particular to a puller for disassembling planetary gears. Background Art

[0002] Planetary gear structure is a common transmission structure in mechanical structures, often used in transmission devices such as motors and reducers. During the use of transmission devices, friction often occurs between gears due to equipment vibration, causing the planetary gears to need to be removed regularly for maintenance or replacement.

[0003] At present, in the field of engineering machinery, the structure is as follows Figure 1 As shown in the figure, along the planetary gear's axial direction, the gap a between the planetary gear and the planetary carrier is approximately 2 mm, and the narrow space b between the retaining ring and the planetary gear is 8 mm. The planetary gear is equipped with a cylindrical roller bearing without an outer ring, which has a central locking buckle. Furthermore, the high integration of the transmission makes disassembly of the planetary gear difficult. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the planetary gears in the existing transmission device are difficult to disassemble.

[0005] To this end, the utility model provides a puller for disassembling planetary gears.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A planetary gear disassembly puller, comprising:

[0008] Connecting plate, and

[0009] A clamping member connected to the connecting plate, wherein the clamping member is provided with a pushing surface;

[0010] Wherein, the pushing surface is arranged toward the connecting plate, and the pushing surface clamps the planetary gear between the pushing surface and the connecting plate;

[0011] The center column is slidably arranged on the connecting plate along its own axial direction, and the center column abuts against one end of the rotating shaft of the planetary gear facing the connecting plate.

[0012] By adopting the above technical solution, the center column abuts against the rotating shaft of the planetary gear, the connecting plate can move along the axial direction of the center column, and the center column supports the rotating shaft, so that the moving connecting plate can clamp the planetary gear between the connecting plate and the clamping piece to remove the planetary gear from the rotating shaft. The structure of the device is simple and can be directly installed on the planetary gear structure. The planetary gear can be disassembled without disassembling the existing transmission device.

[0013] Furthermore, the plane where the connecting plate is located is parallel to the plane where the diameter of the planetary gear is located.

[0014] Furthermore, the central column is coaxially arranged with the planetary gear.

[0015] Furthermore, the central column is threadedly connected to the connecting plate.

[0016] By adopting the above technical solution, the relative movement between the connecting plate and the center column is achieved by rotating the center column, which can save the force for disassembling the planetary gear.

[0017] Furthermore, a plurality of the clamping parts are provided, and the plurality of the clamping parts are circumferentially arranged around the central column.

[0018] Furthermore, the axial direction of the clamping member is parallel to the axial direction of the planetary gear, and the pushing surface is parallel to the plane where the connecting plate is located.

[0019] Furthermore, the clamping member is located between adjacent teeth on the planetary gear, and the pushing surface abuts against a side wall of the planetary gear away from the connecting plate.

[0020] Furthermore, both sides of the connecting plate are provided with assembly nuts, and the clamping piece passes through the assembly nuts and the connecting plate and is threadedly connected to the assembly nuts.

[0021] The beneficial effect of the present invention is that the planetary gear is clamped between the connecting plate and the push surface, and screwed into the center column, so that the planetary gear and the connecting plate can be directly removed from the rotating shaft of the planetary gear. Therefore, when removing the planetary gear, the planetary gear can be easily removed while reducing the disassembly of other components in the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 It is a structural diagram of the present utility model.

[0024] Figure 2 It is a structural diagram showing the positional relationship between the clamping member and the planetary gear in the utility model.

[0025] In the figure: 1. planetary gear; 2. cylindrical roller bearing without outer ring; 3. planetary carrier; 4. retaining ring; 5. connecting plate; 6. clamping part; 61. thrust surface; 7. center column; 8. positioning nut; 9. assembly nut. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] A puller for disassembling planetary gears includes a connecting plate 5, a clamping member 6 and a center column 7. The clamping member 6 is connected to the connecting plate 5. The connecting plate 5 and the clamping member 6 slide with the center column 7 along the axial direction of the center column 7. A push surface 61 is provided on the clamping member 6. The push surface 61 is arranged toward the connecting plate 5 and is parallel to the plane where the connecting plate 5 is located. The clamping member 6 clamps the planetary gear 1 between the push surface 61 and the connecting plate 5.

[0030] In this embodiment, the clamping member 6 is an M8 hexagonal bolt, and the center column 7 is an M16 bolt.

[0031] The plane where the connecting plate 5 is located is parallel to the plane where the diameter of the planetary gear 1 is located. A positioning nut 8 is fixedly connected to the side wall of the connecting plate 5 facing the planetary gear 1. The center column 7 passes through the connecting plate 5 and the positioning nut 8 (M16 nut) and is threadedly connected to the positioning nut 8. The head of the center column 7 is set away from the planetary gear 1, and the end of the center column 7 away from its head abuts against the rotation axis of the planetary gear 1.

[0032] There are multiple clips 6, which are circumferentially arranged around the center column 7. The head of the clip 6 is set away from the connecting plate 5. Assembly nuts 9 (M8 nuts) are set on both sides of the connecting plate 5. The assembly nuts 9 are coaxially threaded on the clip 6. The end face of the assembly nut 9 abuts against the connecting plate 5, and the push surface 61 is set on the side wall of the connecting plate 5 on the head of the clip 6.

[0033] The axial directions of the central column 7 and the clamping member 6 are parallel to the axial direction of the planetary gear 1 , wherein the central column 7 and the planetary gear 1 are coaxially arranged.

[0034] The implementation principles of this application are:

[0035] Place the connecting plate 5 on one side of the planetary gear 1, with the end of the center column 7 (the end of the center column 7 away from its head) abutting against the end face of the rotating shaft of the planetary gear 1, and screw the clamping piece 6 toward the connecting plate 5 from the other side of the planetary gear 1. The clamping piece 6 is located between two adjacent teeth on the planetary gear 1, so that the pushing surface 61 on the clamping piece 6 abuts against the end face of the planetary gear 1 away from the connecting plate 5, and the puller is installed on the planetary gear 1.

[0036] Then, rotate the center column 7 so that the center column 7 is tightened toward the rotating shaft, and the center column 7 and the connecting plate 5 move relative to each other along the axial direction of the planetary gear 1. Since multiple clips 6 are engaged with the planetary gear 1, the connecting plate 5 will not rotate with the center column 7. The connecting plate 5 moves along the axial direction of the center column 7, so that the connecting plate 5 can drive the clips 6 and the planetary gear 1 to move toward the head of the center column 7, and remove the planetary gear 1 from its rotating shaft.

[0037] The present application utilizes the sufficient strength of the standard hexagonal bolt head and the screw rod, utilizes the bolt head as a lifting hook, utilizes the narrow space between teeth, and reasonably utilizes the limited space, so that the planetary gear 1 can be disassembled even in a narrow space.

[0038] Multiple clips 6 are circumferentially distributed around the central column 7. Multiple clips 6 are evenly stressed, and the upper and lower bolts pull out the entire planetary gear. In addition, the device does not require lifting holes on thin-walled planetary gears, which can reduce damage to parts.

[0039] Based on the above-described preferred embodiments of the present invention, and in accordance with the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A planetary gear disassembly puller, characterized in that: include, a connecting plate (5), and A clamping member (6), the clamping member (6) being connected to the connecting plate (5), and the clamping member (6) being provided with a pushing surface (61); The push surface (61) is arranged toward the connecting plate (5), and the push surface (61) clamps the planetary gear (1) between the push surface (61) and the connecting plate (5); A center column (7) is slidably arranged on the connecting plate (5) along its own axial direction, and the center column (7) abuts against one end of the rotating shaft of the planetary gear (1) toward the connecting plate (5).

2. The planetary gear removal puller according to claim 1, characterized in that: The plane where the connecting plate (5) is located is parallel to the plane where the diameter of the planetary gear (1) is located.

3. The planetary gear removal puller according to claim 1, characterized in that: The central column (7) is coaxially arranged with the planetary gear (1).

4. The planetary gear removal puller according to claim 1, characterized in that: The central column (7) is threadedly connected to the connecting plate (5).

5. The planetary gear removal puller according to claim 1, characterized in that: A plurality of the clamping parts (6) are provided, and the plurality of the clamping parts (6) are circumferentially arranged around the central column (7).

6. The planetary gear removal puller according to claim 1, characterized in that: The axial direction of the clamping member (6) is parallel to the axial direction of the planetary gear (1), and the thrust surface (61) is parallel to the plane where the connecting plate (5) is located.

7. The planetary gear removal puller according to claim 1, characterized in that: The clamping member (6) is located between adjacent teeth on the planetary gear (1), and the pushing surface (61) abuts against a side wall of the planetary gear (1) away from the connecting plate (5).

8. The planetary gear removal puller according to claim 1, characterized in that: Both sides of the connecting plate (5) are provided with assembly nuts (9), and the clamping member (6) passes through the assembly nuts (9) and the connecting plate (5) and is threadedly connected to the assembly nuts (9).

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