A dustproof sealing mechanism for a speed reducer used in corrugated paper production

Abstract

This utility model relates to the field of mechanical engineering and discloses a dustproof sealing mechanism for a speed reducer used in corrugated paper production. It includes a housing, a motor fixedly connected to the inside of the left side of the housing, a rotating rod fixedly connected to the output end of the motor, a gear one fixedly connected to the outside of the rotating rod, a transmission rod rotatably connected to the inside of the right side of the housing, a gear two fixedly connected to the outside of the transmission rod, the gear one meshing with the gear two, a belt sleeved on the outside of the transmission rod, and two outer shells fixedly connected to the outer wall of the right side of the housing. A pin is slidably connected inside the outer shell, a spring is sleeved on the outside of the pin, and a sliding plate is fixedly connected to the outside of the pin. In this utility model, the housing and protective shell provide double dust protection, the gear meshing and belt drive ensure stability, and the outer shells, pins, etc., form an elastic structure, facilitating the disassembly and assembly of the protective shell. It is suitable for corrugated paper workshops and extends the life of the speed reducer.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, and in particular to a dustproof sealing mechanism for a speed reducer used in corrugated paper production. Background Technology

[0002] During corrugated paper production, a large amount of dust and impurities such as paper dust and fibers are generated in the workshop. As a key component driving core equipment such as corrugated rolls and pressure rolls, the reducer's internal transmission system is extremely sensitive to dust contamination. Therefore, the dustproof sealing mechanism is an important part of the reducer used in corrugated paper production. Currently, the mainstream dustproof sealing mechanisms for reducers used in corrugated paper production in the industry are mostly designed around the core transmission components and motor heat dissipation areas. The aim is to reduce the amount of dust entering the reducer through physical barriers, avoid gear meshing surface wear, bearing jamming and other failures, and ensure the continuous and stable operation of the reducer in high-dust environments. This is one of the fundamental guarantees for maintaining the efficiency and product quality of the corrugated paper production line.

[0003] The main structure of existing dustproof sealing mechanisms for speed reducers used in corrugated paper production typically uses the speed reducer housing as the basic protective frame. The housing encloses transmission components such as the motor, rotating rod, and gear set, forming a preliminary dust barrier. For exposed transmission areas such as belt drives, some mechanisms add removable protective shells to further prevent dust adhesion. Simultaneously, to balance the motor's heat dissipation requirements with dustproof effectiveness, a dustproof mesh is fitted to the outside of the motor, covering the heat dissipation vents to prevent dust from entering the motor with airflow and affecting heat dissipation efficiency and insulation performance. The overall structure mostly employs traditional sealing methods such as bolt fixing and sealing ring bonding to ensure the sealing of the connection between each protective component and the speed reducer body.

[0004] However, existing dustproof sealing mechanisms for reducers used in corrugated paper production still have significant shortcomings: Firstly, existing equipment generally lacks targeted protective structures in the joints between the rotating rod and the housing, as well as in the meshing gaps of the gear sets. Paper dust and fibers generated during corrugated paper production can easily fall into the equipment through these gaps, leading to increased wear on transmission components over time. This not only increases equipment noise but also shortens the lifespan of the reducer and may even cause sudden shutdowns. Secondly, existing equipment often uses multiple sets of bolts or welding to fix the motor dustproof screens. Disassembly requires specialized tools to unscrew the bolts one by one or to damage the fixing structure, making the operation cumbersome and hindering quick cleaning and replacement. This results in the dustproof screen becoming clogged and difficult to clean in a timely manner, which in turn affects the motor's heat dissipation and increases the risk of the motor overheating and burning out. Therefore, a dustproof sealing mechanism for reducers used in corrugated paper production is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a dustproof sealing mechanism for a speed reducer used in corrugated paper production. It aims to improve the existing technology by addressing the lack of targeted protection for movement gaps such as the connection between the rotating rod and the machine housing, which allows paper dust to easily fall in, causing wear and tear on transmission components, shortening their lifespan, or even causing machine shutdown. Furthermore, the dustproof mesh of the motor is cumbersome to disassemble and install, difficult to clean and replace quickly, and when clogged, it affects the heat dissipation of the motor, increasing the risk of overheating and burning out.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dustproof sealing mechanism for a speed reducer used in corrugated paper production includes a housing. A motor is fixedly connected to the inside of the left side of the housing, and a rotating rod is fixedly connected to the output end of the motor. A gear one is fixedly connected to the outside of the rotating rod. A transmission rod is rotatably connected to the inside of the right side of the housing, and a gear two is fixedly connected to the outside of the transmission rod. Gear one and gear two mesh. A belt is sleeved on the outside of the transmission rod. Two outer shells are fixedly connected to the outer wall of the right side of the housing. A pin is slidably connected inside the outer shell. A spring is sleeved on the outside of the pin. A sliding plate is fixedly connected to the outside of the pin. A protective shell is rotatably connected to the outside of the transmission rod. As a further description of the above technical solution: Two connecting blocks are fixedly connected to the outer wall of the left side of the housing. A dustproof net is slidably connected to the inside of the left side of the housing. A bolt is threadedly connected to the inside of the left side of the dustproof net. A nut is threadedly connected to the outside of the bottom of the bolt. The nut abuts against the connecting blocks. As a further description of the above technical solution: The rotating rod is rotatably connected to the inner wall of the right side of the housing; As a further description of the above technical solution: The pin is inserted into the inside of the protective shell, and the protective shell abuts against the outer right wall of the housing. As a further description of the above technical solution: One side of the spring is fixedly connected to the inner wall of the outer casing, and the other end of the spring is fixedly connected to the outer wall of the sliding plate; As a further description of the above technical solution: The sliding plate is slidably connected to the inner wall of the outer shell, and a blocking block is fixedly connected to each of the four corners of the inner side of the outer shell, and the blocking block abuts against the sliding plate; As a further description of the above technical solution: The belt is sleeved inside the rotating rod on the side away from the transmission rod. As a further description of the above technical solution: The bottom of the casing is fixedly connected to two fixing plates.

[0007] This utility model has the following beneficial effects: 1. In this utility model, the casing encloses the core components for initial dust protection, and the protective shell provides a secondary seal for the belt area, isolating impurities such as paper dust; the elastic structure allows the protective shell to be quickly disassembled and easily installed, shortening maintenance time; the gear and belt drive is stable, and the double seal solves the traditional problem of dust accumulation, making it suitable for high-dust workshops and extending the maintenance cycle and life of the reducer.

[0008] 2. In this utility model, the dustproof net solves the problem of dust entering the motor heat dissipation holes, ensuring motor cleanliness and heat dissipation, and avoiding overheating shutdown; the bolts, nuts and connecting blocks make the dustproof net detachable, greatly shortening maintenance time, and can also fit tightly to prevent dust leakage; different mesh sizes of dustproof nets can be replaced to adapt to different dust environments, improving the ease of use and adaptability of the equipment. Attached Figure Description

[0009] Figure 1 This is a first-view perspective three-dimensional schematic diagram of a dustproof sealing mechanism for a speed reducer used in corrugated paper production according to the present invention. Figure 2 This is a second-view perspective three-dimensional schematic diagram of the dustproof sealing mechanism of a speed reducer for corrugated paper production proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of the dustproof sealing mechanism of a speed reducer for corrugated paper production according to the present invention. Figure 4 This is a schematic diagram of the internal structure of the dustproof sealing mechanism of a speed reducer for corrugated paper production according to the present invention. Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0010] In the diagram: 1. Housing; 2. Fixing plate; 3. Dustproof net; 4. Gear 1; 5. Rotating rod; 6. Transmission rod; 7. Protective shell; 8. Gear 2; 9. Belt; 10. Connecting block; 11. Motor; 12. Pin; 13. Blocking block; 14. Outer shell; 15. Spring; 16. Sliding plate; 17. Nut; 18. Bolt. Detailed Implementation

[0011] 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.

[0012] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a dustproof sealing mechanism for a reducer used in corrugated paper production. The mechanism includes a housing 1, a motor 11 fixedly connected to the inside of the left side of the housing 1, a rotating rod 5 fixedly connected to the output end of the motor 11, a gear 4 fixedly connected to the outside of the rotating rod 5, a transmission rod 6 rotatably connected to the inside of the right side of the housing 1, a gear 8 fixedly connected to the outside of the transmission rod 6, gear 4 meshing with gear 8, a belt 9 sleeved on the outside of the transmission rod 6, two outer shells 14 fixedly connected to the outer wall of the right side of the housing 1, a pin 12 slidably connected inside the outer shell 14, a spring 15 sleeved on the outside of the pin 12, a sliding plate 16 fixedly connected to the outside of the pin 12, and a protective shell 7 rotatably connected to the outside of the transmission rod 6. The housing 1, as a basic protective carrier, encloses the core transmission components such as the motor 11, rotating rod 5, and gear 4, which can initially prevent a large amount of paper dust, fiber, and dust from entering the equipment from the corrugated paper production environment, avoiding the problem of increased wear caused by impurities adhering to the gear meshing surface or the surface of the rotating shaft. The protective shell 7, which is rotatably connected to the outside of the transmission rod 6, further forms a secondary sealing protection for the transmission area of ​​the belt 9. In the production of corrugated paper, the belt 9 is prone to static electricity adsorption of paper dust due to friction. The protective shell 7 can directly isolate external impurities from contact with the belt 9 and the transmission rod 6, and at the same time prevent debris from splashing during the operation of the belt 9, ensuring the cleanliness and service life of the transmission components.

[0013] Reference Figure 2 and Figure 5 Two connecting blocks 10 are fixedly connected to the outer left side of the casing 1. A dustproof net 3 is slidably connected to the inner left side of the casing 1. A bolt 18 is threadedly connected to the inner left side of the dustproof net 3. A nut 17 is threadedly connected to the outer bottom of the bolt 18. The nut 17 abuts against the connecting blocks 10. The threaded connection structure of the bolt 18 and the nut 17, together with the positioning function of the connecting blocks 10, realizes the detachable fixing of the dustproof net 3. When the dustproof net 3 accumulates a lot of dust due to long-term use, resulting in a decrease in ventilation efficiency, the operator only needs to unscrew the nut 17 and the bolt 18 to pull the dustproof net 3 out from the left side of the casing 1 for cleaning or replacement, without disassembling the entire casing 1.

[0014] Reference Figure 1 and Figure 3The rotating rod 5 is rotatably connected to the inner wall of the right side of the housing 1. Serving as the power output shaft of the motor 11, the rotating rod 5 also drives both gear 4 and belt 9. Traditional single-end fixed structures are prone to excessive radial runout due to the long length of the rotating rod 5. This is especially problematic in corrugated paper production where the reducer must withstand continuous vibration and instantaneous load impacts, exacerbating uneven gear meshing, leading to increased noise, accelerated gear wear, and even the risk of tooth breakage. By rotatably connecting the rotating rod 5 to the inner wall of the housing 1 on the right side, transmission accuracy is significantly improved. This ensures that gear 4 and gear 8 maintain a stable meshing clearance, reducing meshing impact and transmission noise. Simultaneously, it prevents belt 9 from slipping or deviating due to the wobbling of the rotating rod 5, ensuring the continuity and efficiency of power transmission.

[0015] Reference Figure 1 and Figure 4 The pin 12 is inserted inside the protective shell 7, which abuts against the outer right wall of the machine housing 1. During operation of the corrugated paper production line, continuous vibrations occur. The traditionally bolted protective shell 7, secured by bolts 18, is prone to loosening due to vibration, leading to displacement of the protective shell 7 and increased sealing gaps, requiring frequent inspection and tightening. The insertion structure of the pin 12, combined with the abutment between the protective shell 7 and the machine housing 1, resists vibration through the rigidity of the pin 12 and the friction of the contact surface. After the pin 12 is inserted into the protective shell 7, it restricts the horizontal and vertical displacement of the protective shell 7, preventing it from shaking due to vibration. Simultaneously, the tight abutment between the protective shell 7 and the machine housing 1 reduces relative displacement during vibration transmission, further reducing wear at the insertion point of the pin 12 and the protective shell 7, ensuring long-term stability of the fixed structure.

[0016] Reference Figures 1-4 One end of the spring 15 is fixedly connected to the inner wall of the outer casing 14, and the other end of the spring 15 is fixedly connected to the outer wall of the sliding plate 16. The elastic properties of the spring 15 can play a buffering role and absorb the vibration energy generated during the operation of the equipment. When the reducer vibrates instantaneously due to changes in the corrugated paper production load, the vibration will be transmitted through the housing 1 to the outer casing 14 and the pin 12. If it is a rigid connection, the vibration impact force will directly act on the insertion part of the pin 12 and the protective shell 7, which may easily cause the pin 12 to bend or the insertion hole of the protective shell 7 to be damaged. However, the spring 15 can convert the instantaneous impact force into elastic potential energy through the deformation process of compression and extension, which can greatly reduce the impact load on the pin 12 and the protective shell 7 and extend their service life.

[0017] Reference Figure 1 , Figure 3 and Figure 4The sliding plate 16 is slidably connected to the inner wall of the outer shell 14. Each of the four corners of the inner side of the outer shell 14 is fixedly connected to a blocking block 13. The blocking block 13 abuts against the sliding plate 16. The sliding connection between the sliding plate 16 and the inner wall of the outer shell 14, together with the limiting effect of the four corner blocking blocks 13, can strictly limit the movement trajectory of the sliding plate 16 to the horizontal direction, avoid its vertical or horizontal deviation during the sliding process, and ensure that the pin 12 always moves along the axial direction. This solves the problem of the pin 12 getting stuck due to the easy deviation of the traditional sliding structure and ensures the smoothness of operation.

[0018] Reference Figure 1 and Figure 3 The belt 9, located on the side furthest from the transmission rod 6, is fitted inside the rotating rod 5. This arrangement, with the belt 9 fitted around both the rotating rod 5 and the transmission rod 6, evenly distributes the power output from the motor 11 to the two transmission shafts, preventing excessive load on a single bearing. In corrugated paper production, the reducer drives equipment such as corrugated rolls and pressure rolls, resulting in significant load fluctuations. If the power is concentrated on a single transmission rod 6, it can easily lead to shaft deformation or accelerated gear wear. In the composite transmission structure, the rotating rod 5 and the transmission rod 6 share the load through the belt 9, extending the service life of the shafts and gears.

[0019] Reference Figure 1 and Figure 2 The bottom of the housing 1 is fixedly connected to two mounting plates 2. Traditional speed reducers usually need to be directly connected to the ground or frame through bolt holes 18 on the bottom of the housing 1. During installation, the bolt holes 18 need to be precisely aligned and the equipment level adjusted, which is cumbersome and time-consuming, especially in the limited space and dense equipment of a corrugated paper production line, where installation is even more difficult. The design of the two mounting plates 2 is equivalent to providing a standardized installation interface for the speed reducer. The mounting plates 2 can be pre-machined with precise mounting holes in the factory. During on-site installation, the mounting plates 2 only need to be connected to the frame or ground with bolts 18, without the need to directly drill holes or adjust the housing 1.

[0020] Working principle: After the reducer starts, the motor 11 drives the rotating rod 5 to rotate, which in turn drives the gear 4 and belt 9 to rotate, which in turn drives the gear 8 to rotate. With the help of the belt 9 to transmit power, the transmission rod 6 is rotated. During the production of corrugated paper, a large amount of powder is generated. To prevent the powder from entering the rotating gap, the protective shell 7 is put into the transmission rod 6 by pulling the pin 12. Then, the pin 12 is released, and under the reaction force of the spring 15, the pin 12 is locked into the groove in the protective shell 7 and firmly fixed. The dustproof net 3 prevents the powder from falling into the motor 11 to a certain extent, but it needs to be cleaned regularly. By rotating the bolt 18, it is dislodged from the groove in the dustproof net 3. Then the dustproof net 3 is pulled out, cleaned, and then put back in and fixed again with the bolt 18.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof sealing mechanism of a speed reducer for corrugated paper production, comprising a casing (1), characterized in that: A motor (11) is fixedly connected to the inside of the left side of the housing (1). A rotating rod (5) is fixedly connected to the output end of the motor (11). A gear (4) is fixedly connected to the outside of the rotating rod (5). A transmission rod (6) is rotatably connected to the inside of the right side of the housing (1). A gear (8) is fixedly connected to the outside of the transmission rod (6). The gear (4) meshes with the gear (8). A belt (9) is sleeved on the outside of the transmission rod (6). Two outer shells (14) are fixedly connected to the outer wall of the right side of the housing (1). A pin (12) is slidably connected inside the outer shell (14). A spring (15) is sleeved on the outside of the pin (12). A sliding plate (16) is fixedly connected to the outside of the pin (12). A protective shell (7) is rotatably connected to the outside of the transmission rod (6).

2. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: Two connecting blocks (10) are fixedly connected to the outer wall of the left side of the housing (1). A dustproof net (3) is slidably connected to the inner left side of the housing (1). A bolt (18) is threadedly connected to the inner left side of the dustproof net (3). A nut (17) is threadedly connected to the outer bottom of the bolt (18). The nut (17) abuts against the connecting block (10).

3. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: The rotating rod (5) is rotatably connected to the inner wall of the right side of the housing (1).

4. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: The pin (12) is inserted into the inside of the protective shell (7), and the protective shell (7) abuts against the outer right side wall of the housing (1).

5. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: One side of the spring (15) is fixedly connected to the inner wall of the outer shell (14), and the other end of the spring (15) is fixedly connected to the outer wall of the sliding plate (16).

6. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: The sliding plate (16) is slidably connected to the inner wall of the outer shell (14), and the four corners of the inner side of the outer shell (14) are fixedly connected with blocking blocks (13), and the blocking blocks (13) abut against the sliding plate (16).

7. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: The belt (9) is fitted inside the rotating rod (5) on the side away from the transmission rod (6).

8. The dustproof sealing mechanism of the speed reducer for corrugated paper production according to claim 1, characterized in that: The bottom of the casing (1) is fixedly connected to two fixing plates (2).

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