A special tool for removing the belt scale motor gear

Abstract

The utility model discloses a special tool is dismantled to belt weigher motor gear, gear dismounting equipment technical field, including clamping part and tension part, and clamping part and tension part contact connection, and clamping part includes base, first clamping plate and with first clamping plate opposite parallelly arranged second clamping plate, and first clamping plate and second clamping plate are fixedly connected through a plurality of fixed link with base upper end surface, first clamping plate and second clamping plate opposite one side edge edge department are provided with connecting plate, and connecting plate and first clamping plate and second clamping plate are all opposite vertical setting, and one end of connecting plate and first clamping plate are integrally arranged, and the other end and second clamping plate sleeve fixed connection, and be provided with the limit board on connecting plate, and one end of limit board is movably covered in connecting plate, and the other end is connected with first clamping plate through adjusting part. Through double clamping plate package gear side, avoid the damage of gear because of local stress concentration, and simple structure occupies small and simple structure easy operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of gear disassembly equipment, specifically relating to a special tool for disassembling the gears of a belt scale motor. Background Technology

[0002] In general production processes, motors driving speed reducers are the most common transmission method. Speed ​​reducers may experience various malfunctions during long-term operation, requiring maintenance. For some speed reducers, gears must be removed before disassembling the reducer housing for troubleshooting and repair. Gear removal tools are specialized tools for removing gears. They typically consist of chucks, handles, and other accessories. The chucks grip the gear, and force is applied through the handle or other mechanical principles to remove the gear from the shaft, ensuring effective gear removal while protecting the gear's surface. Gear removal tools are widely used in mechanical equipment repair, automotive repair, and other fields.

[0003] Ordinary gear removal tools have thick chucks, making them suitable only for machinery with large gear spacing. However, in small, compact machinery with narrow gear spacing, excessively thick chucks cannot enter or hold the gears, leading to inconvenience and increased difficulty in operation. Furthermore, they may scratch or damage the gear surface during disassembly, thus limiting the applicability of ordinary gear removal tools and making them unsuitable for practical use. Additionally, traditional methods for removing reducer gears typically use pullers. During disassembly, the small gap between the gear and the reducer housing makes large pullers unusable, while small pullers lack the force to remove the gear smoothly. Moreover, the disassembly process may damage the gear and even pose a risk of injury.

[0004] Existing technology discloses a patent for a gear disassembly device. Among them, utility model patent CN217513799U discloses a gear disassembly device for a reducer, including a main structure; the main structure has an inner cavity; the side wall of the inner cavity has a through opening; the bottom of the main structure has an opening groove communicating with the inner cavity; the width of the opening groove is smaller than the width of the through opening; and the top of the main structure has a working hole. Although this solves the technical problem of easily damaging the gear or puller when removing reducer gears using a puller, it still has problems such as large device size, difficulty in aligning the gear, complex chuck structure, and inconvenient operation. Utility Model Content

[0005] To overcome the problems of existing technologies, such as large device size, difficulty in fixing to gears, and complex clamp structure leading to inconvenient operation, this utility model provides a special tool for removing the gears of a belt scale motor. The tool includes a clamping part and a pulling part, which are connected in contact. The clamping part includes a base, a first clamping plate, and a second clamping plate arranged parallel to the first clamping plate. The first and second clamping plates are fixedly connected to the upper surface of the base via several fixing rods. A connecting plate is provided on the opposite side edge of the first clamping plate and the second clamping plate. The connecting plate is perpendicular to both the first clamping plate and the second clamping plate. One end of the connecting plate is integrally formed with the first clamping plate, and the other end is fixedly connected to the second clamping plate. A limiting plate is provided on the connecting plate. One end of the limiting plate is movably fitted onto the connecting plate, and the other end is connected to the first clamping plate through an adjusting member.

[0006] Furthermore, the adjusting component includes an adjusting screw, a first connecting block, and a second connecting block. The first connecting block and the second connecting block are respectively fixedly disposed at the bottom of the free ends of the first clamping plate and the limiting plate. Each of the first connecting block and the second connecting block has a corresponding adjusting screw hole. The adjusting screw is threadedly connected to the adjusting screw hole on the first connecting block and the second connecting block.

[0007] Furthermore, the second clamping plate and the limiting plate are provided with a limiting member at the free end away from the adjusting screw. The limiting member includes an abutting screw. An abutting screw hole is provided at the edge of the second clamping plate. The abutting screw passes through the abutting screw hole and abuts against the limiting plate. The abutting screw hole is threadedly connected to the abutting screw.

[0008] Furthermore, the limiting plate has a first extension block extending downward from one end near the connecting plate, and the extension block has a connecting hole. The limiting plate passes through the connecting hole and is fixedly connected to the second clamping plate. The second clamping plate has a second extension block extending downward from one end near the connecting plate, and the free end of the connecting plate is fixedly connected to the second extension block.

[0009] Furthermore, the pulling part includes three pull claws, a puller seat, and a lead screw. The puller seat is sleeved on the outside of the lead screw. The three pull claws are equidistantly arranged on the outer wall of the puller seat through a movable plate assembly, and the puller seat is threadedly connected to the lead screw.

[0010] Furthermore, one end of the movable plate assembly is rotatably connected to the connecting plate located on the outer wall of the puller seat, and the other end is slidably connected to both sides of the pull claw.

[0011] Furthermore, a circular through hole is provided in the middle of the base, and the lead screw passes through the through hole and abuts against the fixed shaft that fixes the gear.

[0012] Furthermore, each of the three pull claws is provided with a claw hook near any end of the lead screw, and the claw hook is in contact with the edge of the base.

[0013] Furthermore, the connecting plate is fixedly connected to the base via an auxiliary rod on the side near the first clamping plate.

[0014] Furthermore, the base is a regular polygon or a circle.

[0015] The beneficial effects of adopting the technical solution of this utility model are as follows: (1) A rigid U-shaped frame is formed by the base, the first clamping plate, the second clamping plate and the fixing rod, which can firmly clamp the gear on the outside and provide a stable reaction force base for disassembling the gear. The vertically set connecting plate connects the edges of the two clamping plates, which significantly enhances the overall structural rigidity and deformation resistance of the clamping part, prevents the clamping part from opening or twisting when subjected to force, and limits the action position of the pulling part. The tool has a simple overall structure, occupies little space when used and is simple and easy to operate.

[0016] (2) The limiting plate of the movable part is connected to the first clamping plate through the adjusting part. Its working surface provides an adjustable force application reference surface for the pull claw of the pulling part, which is parallel to the gear axis, to ensure that the pulling force is transmitted along the axial direction. The double clamping plate wraps around the side of the gear, replacing the single-point contact of the traditional three-legged puller, dispersing the pulling force and avoiding damage to the gear due to local stress concentration. The connecting plate and the limiting plate form a frame structure to fix the axial position of the gear and prevent the gear from shifting during disassembly. Attached Figure Description

[0017] 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 or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a special tool for dismantling the gears of a belt scale motor according to this utility model; Figure 2 This is a structural schematic diagram from another perspective of a special tool for dismantling the motor gears of a belt scale according to this utility model; The components include: 1. Clamping part; 2. Pulling part; 3. Base; 4. First clamping plate; 5. Second clamping plate; 6. Fixing rod; 7. Connecting plate; 8. Limiting plate; 9. Adjusting screw; 10. First connecting block; 11. Second connecting block; 12. Abutting screw; 13. Pull claw; 14. Pulling seat; 15. Lead screw; 16. Movable plate assembly; 17. Through hole; 18. Auxiliary rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] This embodiment uses a base, a first clamping plate, a second clamping plate, and a fixing rod to form a rigid U-shaped frame, which can firmly clamp the gear to the outside and define the position of the pulling force. The double clamping plates wrap around the side of the gear, replacing the single-point contact of a traditional three-legged puller, dispersing the pulling force and preventing damage to the gear due to localized stress concentration. The connecting plate and the limiting plate form a frame structure to fix the axial position of the gear and prevent gear displacement during disassembly. The specific implementation is as follows: Reference Figure 1-2 As shown, a special tool for removing the gears of a belt scale motor includes a clamping part 1 and a pulling part 2. The clamping part 1 and the pulling part 2 are in contact with each other. The clamping part 1 includes a base 3, a first clamping plate 4 and a second clamping plate 5 arranged parallel to the first clamping plate 4. The first clamping plate 4 and the second clamping plate 5 are fixedly connected to the upper surface of the base 3 by a plurality of fixing rods 6. A connecting plate 7 is provided on the opposite side edge of the first clamping plate 4 and the second clamping plate 5. The connecting plate 7 is perpendicular to both the first clamping plate 4 and the second clamping plate 5. One end of the connecting plate 7 is integrally formed with the first clamping plate 4, and the other end is fixedly connected to the second clamping plate 5. A limiting plate 8 is provided on the connecting plate 7. One end of the limiting plate 8 is movably sleeved on the connecting plate 7, and the other end is connected to the first clamping plate 4 through an adjusting member.

[0021] Here, a rigid U-shaped frame is formed by the base 3, the first clamping plate 4, the second clamping plate 5, and the fixing rod 6, which can firmly clamp the gear to the outside, providing a stable reaction force base for gear disassembly. The vertically set connecting plate 7 connects the edges of the two clamping plates, significantly enhancing the overall structural rigidity and deformation resistance of the clamping part 1, preventing the clamping part 1 from opening or twisting under force, and limiting the working position of the pulling part 2. The movable limiting plate 8 is connected to the first clamping plate 4 through an adjusting member. Its working surface provides an adjustable force application reference surface for the pull claw 13 of the pulling part 2, which is parallel to the gear axis, ensuring that the pulling force is transmitted along the axial direction.

[0022] In a preferred embodiment, the adjusting component includes an adjusting screw 9, a first connecting block 10, and a second connecting block 11. The first connecting block 10 and the second connecting block 11 are respectively fixedly disposed at the bottom of the free ends of the first clamping plate 4 and the limiting plate 8. Each of the first connecting block 10 and the second connecting block 11 has a corresponding adjusting screw hole. The adjusting screw 9 is threadedly connected to the adjusting screw holes on the first connecting block 10 and the second connecting block 11.

[0023] Here, the distance between the limiting plate 8 and the first clamping plate 4 can be precisely controlled by rotating the adjusting screw 9. This threaded transmission method offers high adjustment precision and is easy to fine-tune. The threaded connection is self-locking, ensuring the position of the limiting plate 8 is firmly locked after adjustment, preventing loosening or displacement due to vibration or force during disassembly, thus guaranteeing the stability of the force application reference. Adjusting the position of the limiting plate 8 by rotating the adjusting screw 9 allows for precise and stable adjustment and locking of the limiting plate 8 to accommodate gears of different sizes or installation spaces, ensuring the correct direction of the pulling force.

[0024] In a preferred embodiment, the second clamping plate 5 and the limiting plate 8 are provided with limiting components away from the free ends of the adjusting screw 9. The limiting components include an abutting screw 12. An abutting screw hole is provided at the edge of the second clamping plate 5. The abutting screw 12 passes through the abutting screw hole and abuts against the limiting plate 8. The abutting screw hole is threadedly connected to the abutting screw 12.

[0025] Here, after the abutting screw 12 is screwed into the abutting screw hole of the second clamping plate 5, its end abuts against the limiting plate 8, adding an adjustable support point at the free end of the limiting plate 8 (the end away from the adjusting screw 9). This support point effectively resists the bending deformation and swaying tendency of the limiting plate 8 when subjected to the rearward force of the tension part 2, preventing relative slippage between the gear and the tool during disassembly. By tightening the abutting screw 12, the tightness between it and the limiting plate 8 can be easily adjusted to adapt to different working conditions or compensate for wear. This prevents the limiting plate 8 from bending or displacing under force, ensuring its accuracy and reliability as a force application reference surface.

[0026] In a preferred embodiment, the limiting plate 8 has a first extension block extending downward from one end near the connecting plate 7, and the extension block has a connecting hole. The limiting plate 8 passes through the connecting hole and is fixedly connected to the second clamping plate 5. The second clamping plate 5 has a second extension block extending downward from one end near the connecting plate 7, and the free end of the connecting plate 7 is fixedly connected to the second extension block.

[0027] Here, the first extension block on the limiting plate 8 and the second extension block on the second clamping plate 5 increase the cross-sectional area and connection point depth of the connection portion, significantly improving the connection strength between the connecting plate 7 and the second clamping plate 5, and between the limiting plate 8 and the connecting plate 7 or the second clamping plate 5. The limiting plate 8 is fixedly connected to the second extension block through a connecting hole. Compared to simple overlapping or point connection, this through-hole fixing method is more secure and reliable, and less prone to loosening. Overall, it makes the structure of the clamping part 1 near the point of application of tension more stable.

[0028] In a preferred embodiment, the pulling part 2 includes three pull claws 13, a puller seat 14, and a lead screw 15. The puller seat 14 is sleeved on the outside of the lead screw 15. The three pull claws 13 are equidistantly arranged on the outer wall of the puller seat 14 through the movable plate assembly 16, and the puller seat 14 is threadedly connected to the lead screw 15.

[0029] Here, the three claws 13 are equidistantly distributed, evenly hooking onto the edge of the base 3, ensuring the pulling force is evenly distributed across the base 3. The threaded engagement between the puller seat 14 and the lead screw 15 converts the rotational motion into a powerful linear pulling force. The operator only needs to rotate the lead screw 15 to generate a huge axial pulling force, saving effort and increasing efficiency. When rotating the lead screw 15 moves the puller seat 14 backward, the three claws 13 can synchronously and equidistantly retract towards the center through the lever or linkage of the movable plate assembly 16, automatically adapting to the size of the base 3 and maintaining alignment, ensuring that the pulling force is always along the axial direction.

[0030] In a preferred embodiment, one end of the movable plate assembly 16 is rotatably connected to the connecting plate 7 located on the outer wall of the puller seat 14, and the other end is slidably connected to both sides of the pull claw 13.

[0031] Here, one end of the movable plate assembly 16 is rotatably connected to the puller seat 14, allowing the movable plate assembly 16 to freely rotate its angle as the puller seat 14 moves, adapting to its movement trajectory. The other end of the movable plate assembly 16 is slidably connected to both sides of the pull claw 13, allowing the pull claw 13 to slide smoothly radially (closer to or further away from the axis of the lead screw 15) under the guidance of the movable plate assembly 16. This design ensures that when the puller seat 14 moves axially, the three movable plate assemblies 16 move synchronously, driving the three pull claws 13 to move radially synchronously and equidistantly.

[0032] In a preferred embodiment, a circular through hole 17 is provided in the middle of the base 3, and the lead screw 15 passes through the through hole 17 and abuts against the fixed shaft of the fixed gear.

[0033] Here, the circular through-hole 17 provides a precise guide channel for the lead screw 15, limiting its radial offset or bending under force, ensuring its linear motion trajectory, and guaranteeing that the pulling force is accurately directed along the axis. After the front end of the lead screw 15 passes through the through-hole 17, it directly abuts against the end face of the motor shaft of the fixed gear. The position of the through-hole 17 determines the position of the jacking point, ensuring that the jacking force acts accurately at the center of the shaft. The pulling force generated by the lead screw 15 acts on the base 3 through the pull claw 13, while the front end of the lead screw 15, supported by the through-hole 17, ultimately transmits the force to the outside of the gear through the clamping part 1.

[0034] In a preferred embodiment, each of the three pull claws 13 is provided with a claw hook near the end of the lead screw 15, and the claw hook is in contact with the edge of the base 3.

[0035] Here, the claw hook contacts the edge of the base 3, meaning that when the gear is pulled, the reaction force of the backward pulling force generated by the claw 13 is directly transmitted to the edge of the base 3 through the claw hook. This makes the entire clamping part 1 the main body that bears the pulling reaction force, and the structure is stable and reliable. The huge pulling force generated by the pulling part 2 is ultimately borne by the clamping part 1 through this contact point.

[0036] In a preferred embodiment, the connecting plate 7 is fixedly connected to the base 3 on the side near the first clamping plate 4 via an auxiliary rod 18.

[0037] Here, the auxiliary rod 18 greatly enhances the ability of the connecting plate 7 to resist vertical bending deformation, making it more stable when subjected to the tension transmitted by the limiting plate 8, reducing elastic deformation, and ensuring positioning accuracy.

[0038] In one preferred embodiment, the base 3 is a regular polygon or a circle.

[0039] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A special tool for removing the gears of a belt scale motor, characterized in that, It includes a clamping part (1) and a pulling part (2), the clamping part (1) and the pulling part (2) are in contact connection, the clamping part (1) includes a base (3), a first clamping plate (4) and a second clamping plate (5) arranged parallel to the first clamping plate (4), the first clamping plate (4) and the second clamping plate (5) are fixedly connected to the upper end face of the base (3) by a plurality of fixing rods (6); A connecting plate (7) is provided on the opposite side edge of the first clamping plate (4) and the second clamping plate (5). The connecting plate (7) is perpendicular to both the first clamping plate (4) and the second clamping plate (5). One end of the connecting plate (7) is integrally formed with the first clamping plate (4), and the other end is fixedly connected to the second clamping plate (5). A limiting plate (8) is provided on the connecting plate (7). One end of the limiting plate (8) is movably fitted onto the connecting plate (7), and the other end is connected to the first clamping plate (4) through an adjusting member.

2. The special tool for removing the gears of a belt scale motor according to claim 1, characterized in that, The adjusting component includes an adjusting screw (9), a first connecting block (10), and a second connecting block (11). The first connecting block (10) and the second connecting block (11) are respectively fixedly disposed at the bottom of the free end of the first clamping plate (4) and the limiting plate (8). The first connecting block (10) and the second connecting block (11) are each provided with corresponding adjusting screw holes. The adjusting screw (9) is threadedly connected to the adjusting screw holes on the first connecting block (10) and the second connecting block (11).

3. The special tool for removing the gears of a belt scale motor according to claim 2, characterized in that, The second clamping plate (5) and the limiting plate (8) are provided with limiting components at the free ends away from the adjusting screw (9). The limiting components include an abutting screw (12). An abutting screw hole is provided at the edge of the second clamping plate (5). The abutting screw (12) passes through the abutting screw hole and abuts against the limiting plate (8). The abutting screw hole is threadedly connected to the abutting screw (12).

4. The special tool for removing the gears of a belt scale motor according to claim 1, characterized in that, The limiting plate (8) has a first extension block extending downward from one end near the connecting plate (7). The extension block has a connecting hole, and the limiting plate (8) passes through the connecting hole and is fixedly connected to the second clamping plate (5). The second clamping plate (5) has a second extension block extending downward from one end near the connecting plate (7). The free end of the connecting plate (7) is fixedly connected to the second extension block.

5. A special tool for removing the gears of a belt scale motor according to claim 1, characterized in that, The tensioning part (2) includes three pull claws (13), a puller seat (14), and a lead screw (15). The puller seat (14) is fitted onto the outside of the lead screw (15). The three pull claws (13) are equidistantly arranged on the outer wall of the puller seat (14) through a movable plate assembly (16), and the puller seat (14) is threadedly connected to the lead screw (15).

6. A special tool for removing the gears of a belt scale motor according to claim 5, characterized in that, One end of the movable plate assembly (16) is rotatably connected to the connecting plate (7) located on the outer side wall of the puller seat (14), and the other end is slidably connected to both sides of the pull claw (13).

7. A special tool for removing the gears of a belt scale motor according to claim 5, characterized in that, The base (3) has a circular through hole (17) in the middle, and the lead screw (15) passes through the through hole (17) and abuts against the fixed shaft that fixes the gear.

8. A special tool for removing the gears of a belt scale motor according to claim 5, characterized in that, Each of the three pull claws (13) is provided with a claw hook near any end of the lead screw (15), and the claw hook is in contact with the edge of the base (3).

9. A special tool for removing the gears of a belt scale motor according to claim 5, characterized in that, The connecting plate (7) is fixedly connected to the base (3) on the side near the first clamping plate (4) via an auxiliary rod (18).

10. A special tool for removing the gears of a belt scale motor according to claim 5, characterized in that, The base (3) is a regular polygon or a circle.

Images