A device for dismounting and ejecting a driving shaft of a speed reducer

Abstract

The utility model belongs to the technical field of speed reducer maintenance equipment, and disclose a kind of speed reducer driving shaft dismounting ejection device, including fixed disc, the middle part of the front of fixed disc is movably connected with ejection shaft head, the front of ejection shaft head is equipped with internal hexagonal groove, the back of ejection shaft head is fixedly connected with first threaded rod.The utility model is provided with fixed disc, ejection shaft head, internal hexagonal groove, first threaded rod and ejector rod, first, fixed disc is adhered to the speed reducer dismounting surface, then internal hexagonal tool is inserted into the inside of internal hexagonal groove, subsequently twist internal hexagonal tool, this will drive ejection shaft head to rotate, and then make first threaded rod rotate, finally push ejector rod and eject speed reducer driving shaft, and first threaded rod and ejector rod can be disassembled, can be applied to different internal diameter speed reducer, improve the application range of the device, and solve the problem that hydraulic puller cannot be operated in narrow space when disassembling.

Description

Technical Field

[0001] This utility model belongs to the technical field of speed reducer maintenance equipment, specifically a speed reducer drive shaft disassembly and ejection device. Background Technology

[0002] A speed reducer is a power transmission device that reduces input speed and increases output torque through a mechanical transmission structure. It achieves speed and torque conversion by meshing transmission components such as gears, worm gears, and planetary gears and utilizing the difference in transmission ratio.

[0003] As a core component of the reducer transmission system, the drive shaft operates under high-load production conditions in the all-steel A zone (the core production workshop for all-steel radial tires) for extended periods. It continuously withstands torque transmission and friction, making it highly susceptible to surface wear, keyway damage, shaft deformation, and even breakage. Timely disassembly and repair or replacement are essential. However, the workshop faces numerous practical challenges when overhauling small and medium-sized SEW series reducers: the workshop's equipment layout is dense and compact, the reducer installation space is limited, and traditional hydraulic pullers cannot be easily installed due to their large size. Furthermore, the existing disassembly process is cumbersome, resulting in excessively long disassembly times for a single unit, severely hindering maintenance efficiency and impeding the rapid restoration of equipment operation. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems. This invention provides a gearbox drive shaft disassembly and ejection device, which has the advantages of wide applicability, easy portability, and fewer installation restrictions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gear reducer drive shaft disassembly and ejection device, comprising a fixed disk, an ejection shaft head movably connected to the center of the front side of the fixed disk, an internal hexagonal groove being formed on the front side of the ejection shaft head, a first threaded rod being fixedly connected to the back side of the ejection shaft head, the outer surface of the first threaded rod being movably connected to the inner surface of the fixed disk, a push rod being threadedly connected to the outer surface of the first threaded rod, and the outer surface of the push rod being movably connected to the back side of the fixed disk.

[0006] As a preferred technical solution of this utility model, the front of the fixing plate is provided with a first elongated hole, and the number of the first elongated holes is four. The inner surface of each of the four first elongated holes is movably connected with a first fixing screw.

[0007] As a preferred technical solution of this utility model, the front of the fixing plate is provided with a second elongated hole, and the number of the second elongated holes is four. The inner diameter of the four second elongated holes is larger than the inner diameter of the four first elongated holes, and the inner surface of the four second elongated holes is movably connected with a second fixing screw.

[0008] As a preferred technical solution of this utility model, mounting grooves are provided on both the left and right sides of the front of the fixed plate. A handle is movably connected to the inner surface of the mounting groove. A movable shaft is fixedly sleeved inside the handle. The outer surface of the movable shaft is movably sleeved with the inner surface of the mounting groove.

[0009] As a preferred embodiment of this utility model, an L-shaped block is fixedly connected to the top of the fixed disk, and a second threaded rod is threadedly connected to the inside of the L-shaped block.

[0010] As a preferred embodiment of this utility model, a toothed plate is movably sleeved on the outer surface of the bottom end of the second threaded rod, and a gear is meshed with the outer surface of the bottom end of the toothed plate. The outer surface of the gear is movably connected to the inner surface of the mounting groove, and the inner surface of the gear is fixedly sleeved with the outer surface of the movable shaft.

[0011] As a preferred embodiment of this utility model, a sliding groove is provided on the inner side of the L-shaped block, a limiting block is movably connected to the inner surface of the sliding groove, and the outer side of the limiting block is fixedly connected to the outer surface of the toothed plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting a fixed plate, an ejector head, an internal hexagonal groove, a first threaded rod, and a push rod, firstly attaches the fixed plate to the disassembly / assembly surface of the reducer, then inserts an internal hexagonal tool into the internal hexagonal groove, and then twists the internal hexagonal tool, which will drive the ejector head to rotate, thereby causing the first threaded rod to rotate as well, and finally pushes the push rod to eject the reducer's drive shaft. At the same time, the first threaded rod and the push rod can be disassembled, which can be used for reducers with different inner diameters, thus improving the applicability of the device. It also solves the problem that the hydraulic puller cannot operate in a confined space during disassembly and assembly.

[0014] 2. This utility model, by setting a handle, a second threaded rod, a toothed plate, and a gear, rotates the second threaded rod upward, which will drive the toothed plate upward and separate it from the gear, thus releasing the locking effect on the handle. At this time, the two handles rotate 90 degrees around the movable shaft, which makes it convenient for the operator to install the fixed plate by holding the two handles, without the operator having to support the fixed plate with their hands, thus improving the convenience of the fixed plate installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the side of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the movable shaft of this utility model;

[0018] Figure 4 This is a schematic diagram of the gear structure of this utility model;

[0019] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Fixed plate; 2. Ejector shaft head; 3. Socket hexagonal groove; 4. First threaded rod; 5. Ejector rod; 6. First elongated hole; 7. First fixing screw; 8. Second elongated hole; 9. Second fixing screw; 10. Mounting groove; 11. Handle; 12. Movable shaft; 13. L-shaped block; 14. Second threaded rod; 15. Gear plate; 16. Gear; 17. Slide groove; 18. Limiting block. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 5 As shown, this utility model provides a gear reducer drive shaft disassembly and ejection device, including a fixed plate 1, an ejector shaft head 2 movably connected to the center of the front of the fixed plate 1, an internal hexagonal groove 3 opened on the front of the ejector shaft head 2, a first threaded rod 4 fixedly connected to the back of the ejector shaft head 2, the outer surface of the first threaded rod 4 movably connected to the inner surface of the fixed plate 1, and a push rod 5 threadedly connected to the outer surface of the first threaded rod 4, the outer surface of the push rod 5 movably connected to the back of the fixed plate 1.

[0023] The internal thread of the push rod 5 is opposite to the thread on the outer surface of the first threaded rod 4. First, the fixed plate 1 is attached to the disassembly and assembly surface of the reducer. Then, the internal hexagon tool is inserted into the internal hexagon slot 3. Then, the internal hexagon tool is turned, which will drive the ejector head 2 to rotate, thereby causing the first threaded rod 4 to rotate as well. Finally, the push rod 5 is pushed out of the reducer drive shaft. At the same time, the first threaded rod 4 and the push rod 5 can be disassembled, so that reducers with different inner diameters can be used.

[0024] The fixed plate 1 has four first elongated holes 6 on its front side, and each of the four first elongated holes 6 has a first fixing screw 7 movably connected to its inner surface.

[0025] By cooperating with the first fixing screw 7 and the first elongated hole 6, the fixing plate 1 can be fixed on the disassembly and assembly surface of the reducer. At the same time, the first fixing screw 7 can slide inside the first elongated hole 6, thereby adapting to reducer holes in different positions and improving the applicability of the fixing plate 1.

[0026] The fixed plate 1 has four second elongated holes 8 on its front side. The inner diameter of each of the four second elongated holes 8 is larger than the inner diameter of each of the four first elongated holes 6. The inner surfaces of each of the four second elongated holes 8 are movably connected with a second fixing screw 9.

[0027] When the diameter of the first fixing screw 7 is smaller than the diameter of the reducer hole, the second fixing screw 9 can be inserted into the reducer hole to install and fix the fixed plate 1 through the cooperation of the second elongated hole 8 and the second fixing screw 9. This design improves the applicability of the fixed plate 1.

[0028] The fixed plate 1 has mounting grooves 10 on both the left and right sides of the front. A handle 11 is movably connected to the inner surface of the mounting groove 10. A movable shaft 12 is fixedly sleeved inside the handle 11. The outer surface of the movable shaft 12 is movably sleeved with the inner surface of the mounting groove 10.

[0029] The two handles 11 rotate 90 degrees around the movable shaft 12, making it convenient for the operator to install the fixed plate 1 by holding the two handles 11.

[0030] The top of the fixed disk 1 is fixedly connected to an L-shaped block 13, and the L-shaped block 13 is internally threaded with a second threaded rod 14.

[0031] The design of the L-shaped block 13 serves to install and support the second threaded rod 14.

[0032] Among them, a toothed plate 15 is movably sleeved on the outer surface of the bottom end of the second threaded rod 14, and a gear 16 is meshed on the outer surface of the bottom end of the toothed plate 15. The outer surface of the gear 16 is movably connected to the inner surface of the mounting groove 10, and the inner surface of the gear 16 is fixedly sleeved on the outer surface of the movable shaft 12.

[0033] Rotating the second threaded rod 14 downwards will cause the toothed plate 15 to move downwards and mesh with the gear 16 to lock the handle 11.

[0034] The L-shaped block 13 has a groove 17 on its inner side, and a limiting block 18 is movably connected to the inner surface of the groove 17. The outer side of the limiting block 18 is fixedly connected to the outer surface of the toothed plate 15.

[0035] The design of the slide groove 17 and the limiting block 18 serves to limit the toothed plate 15, ensuring that the toothed plate 15 can move up and down stably.

[0036] Working principle and usage process of this utility model:

[0037] When disassembling and assembling the SEW reducer, first rotate the two second threaded rods 14 upwards, which will cause the gear plate 15 to move upwards and separate from the two gears 16, releasing the locking effect on the two handles 11. At this time, the two handles 11 rotate 90 degrees around the movable shaft 12, making it convenient for the operator to hold the two handles 11 to attach the fixed plate 1 to the reducer disassembly and assembly surface. The lockable design of the two handles 11 ensures the stability of the fixed plate 1 during installation. At the same time, the retractable design of the two handles 11 does not affect the sliding of the first fixing screw 7 inside the first elongated hole 6.

[0038] Then, select the appropriate first fixing screw 7 or second fixing screw 9 according to the different reducer holes. If the reducer hole is compatible with the first fixing screw 7, the first fixing screw 7 slides in the first elongated hole 6 to the reducer hole and rotates to install and fix the fixing plate 1. Then, insert the internal hexagon tool into the internal hexagon slot 3 and twist the internal hexagon tool, which will drive the ejector head 2 to rotate, thereby causing the first threaded rod 4 to rotate as well, and finally push the ejector rod 5 to eject the reducer drive shaft. Since the first threaded rod 4 and the ejector rod 5 can be disassembled, it can be used for reducers with different inner diameters, thus improving the applicability of the device.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for disassembling and ejecting the drive shaft of a speed reducer, comprising a fixed disc (1), characterized in that: The center of the front of the fixed disk (1) is movably connected to an ejector head (2). The front of the ejector head (2) is provided with an internal hexagonal groove (3). The back of the ejector head (2) is fixedly connected to a first threaded rod (4). The outer surface of the first threaded rod (4) is movably connected to the inner surface of the fixed disk (1). The outer surface of the first threaded rod (4) is threadedly connected to a push rod (5). The outer surface of the push rod (5) is movably connected to the back of the fixed disk (1).

2. The gear reducer drive shaft disassembly and ejection device according to claim 1, characterized in that: The front of the fixed plate (1) is provided with a first elongated hole (6), and there are four first elongated holes (6). The inner surfaces of the four first elongated holes (6) are movably connected with first fixing screws (7).

3. The gear reducer drive shaft disassembly and ejection device according to claim 1, characterized in that: The front of the fixed plate (1) is provided with a second elongated hole (8). There are four second elongated holes (8). The inner diameter of each of the four second elongated holes (8) is larger than the inner diameter of each of the four first elongated holes (6). The inner surfaces of each of the four second elongated holes (8) are movably connected with a second fixing screw (9).

4. The gear reducer drive shaft disassembly and ejection device according to claim 1, characterized in that: The fixed plate (1) has mounting grooves (10) on both the left and right sides of the front. A handle (11) is movably connected to the inner surface of the mounting groove (10). A movable shaft (12) is fixedly sleeved inside the handle (11). The outer surface of the movable shaft (12) is movably sleeved with the inner surface of the mounting groove (10).

5. The gear reducer drive shaft disassembly and ejection device according to claim 1, characterized in that: An L-shaped block (13) is fixedly connected to the top of the fixed disk (1), and a second threaded rod (14) is threadedly connected to the inside of the L-shaped block (13).

6. The gear reducer drive shaft disassembly and ejection device according to claim 5, characterized in that: A toothed plate (15) is movably sleeved on the outer surface of the bottom end of the second threaded rod (14). A gear (16) is meshed on the outer surface of the bottom end of the toothed plate (15). The outer surface of the gear (16) is movably connected to the inner surface of the mounting groove (10). The inner surface of the gear (16) is fixedly sleeved on the outer surface of the movable shaft (12).

7. The gear reducer drive shaft disassembly and ejection device according to claim 5, characterized in that: The inner side of the L-shaped block (13) is provided with a sliding groove (17), and the inner surface of the sliding groove (17) is movably connected to a limiting block (18), and the outer side of the limiting block (18) is fixedly connected to the outer surface of the toothed plate (15).

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