Gear swing arm lifting assembly

Abstract

The utility model relates to the technical field of automatic conveying mechanisms, and discloses a gear swing arm lifting assembly in order to solve the technical problem that a traditional conveying mechanism is insufficient in positioning accuracy and load capacity, a horizontal motor is connected with a motor power shaft, and the motor power shaft penetrates through a first bearing seat and extends into a second bearing seat. A motor power shaft is fixedly provided with a first gear; a linear guide rail is arranged, a sliding block is slidably mounted on the linear guide rail, a strip-shaped plate is fixedly mounted on the sliding block, a rack is fixedly mounted on the strip-shaped plate, and the rack is in meshed connection with the first gear; a second gear and a third gear which are in meshed connection with the rack are arranged, and the second gear and the third gear are installed on the first shaft rod and the second shaft rod respectively; the two ends of the first shaft rod and the second shaft rod are connected with swing arms respectively, and the narrow portions of the swing arms are connected with idler wheels through shaft structures. The gear assembly and the rack are in meshing transmission to drive the swing arm to rotate to achieve ascending and descending, and the positioning precision and the loading capacity are improved.

Description

Technical Field

[0001] This utility model relates to the field of automated conveying mechanism technology, and in particular to a gear swing arm lifting assembly. Background Technology

[0002] In modern industrial automation machinery, positioning accuracy and ease of maintenance are increasingly becoming core performance indicators. In existing technologies, common lever-type lifting structures generally use a motor mounted at the end for drive. This structure not only has a long transmission path and uneven force distribution, but is also a typical labor-intensive structure, resulting in a large and costly reducer, and the overall load capacity of the system is limited.

[0003] Furthermore, in this structure, some critical transmission components (such as bearings) are subjected to significant tensile forces for extended periods, making them highly susceptible to damage due to overload or fatigue. Moreover, due to the compact overall layout and complex arrangement of internal components, wear or malfunctions affecting accuracy will significantly increase the difficulty of repairing and replacing critical components (such as bearings), impacting the equipment's continuous operating efficiency.

[0004] Existing structures, represented by the Chinese utility model patent document with publication number CN206955023U and invention title "Cam-Driven Swing Arm Lifting Roller Bed", have large overall parts volume, high processing difficulty, and high requirements for manufacturing and installation accuracy, which in turn leads to a high dependence on the processing equipment capabilities of suppliers and the technical level of assembly personnel.

[0005] In addition, when a critical part of this type of structure fails, multiple peripheral parts usually need to be removed before repair or replacement can be carried out, which leads to prolonged equipment downtime and makes it difficult to quickly restore operation, which is not conducive to the high efficiency and continuous operation requirements of industrial automated production lines. Utility Model Content

[0006] The purpose of this invention is to provide a gear-mounted swing arm lifting assembly to solve the technical problems of insufficient positioning accuracy and load capacity in traditional conveying mechanisms.

[0007] To achieve the above objectives, this utility model provides a gear-driven swing arm lifting assembly, including a horizontally positioned horizontal motor connected to a motor drive shaft, the motor drive shaft passing through a first bearing seat and extending into a second bearing seat, with a first gear fixedly mounted on the motor drive shaft; a linear guide rail perpendicular to the motor drive shaft, a slider slidably mounted on the linear guide rail, a strip plate fixedly mounted on the slider, and a rack fixedly mounted on the strip plate, the rack meshing with the first gear; a second gear and a third gear meshing with the rack, the second gear and the third gear respectively mounted on a first shaft and a second shaft; swing arms connected to both ends of the first shaft and the second shaft, with rollers connected to the narrow portion of the swing arms via a shaft structure.

[0008] The system employs a horizontally positioned motor to drive a transversely arranged power shaft. Rotational transmission is achieved through a centrally mounted first gear and a vertically positioned rack. This, in turn, drives the meshing second and third gears to rotate the first and second shafts. The swing arms connected to both ends then drive the rollers to move up and down. The structural design ensures more balanced force distribution, effectively reducing radial tension on the bearings and improving the system's operational stability and transmission efficiency. At the same time, the overall layout is compact, with the motor and transmission components arranged in parallel, reducing the equipment's height and size and facilitating installation and maintenance.

[0009] Furthermore, expansion sleeves are provided between the first shaft and the second gear, and between the second shaft and the third gear, to achieve keyless connections for torque transmission. This structure achieves keyless connections between shafts and gears by using expansion sleeves, avoiding fatigue damage problems that may occur due to stress concentration in the keyway in traditional keyed connections. It has advantages such as convenient assembly and disassembly, high coaxiality, and reliable connection, effectively improving the stability and lifespan of the transmission system, and facilitating quick on-site maintenance and replacement.

[0010] Furthermore, the linear guide, slider, and rack are equipped with dust covers. These dust covers have clearance openings for the first, second, and third gears to pass through. A gear cover is mounted above these clearance openings and is fixedly installed on the dust covers. This structure effectively isolates external dust, oil, and foreign objects from the dust covers, ensuring the long-term stable operation of the guide, slider, and rack and extending their service life. The clearance openings ensure smooth meshing of the gears and rack without affecting the transmission function. The gear cover further improves operational safety, preventing operators from accidentally touching rotating parts and enhancing the overall protection level of the machine.

[0011] Furthermore, the second and third gears are positioned in front of and behind the first gear, respectively. This arrangement places the first gear between the two meshing gears, balancing the transmitted force it receives, effectively reducing the off-center load on the motor shaft, improving the stability and operating accuracy of the entire transmission system, and helping to reduce bearing load and extend its service life.

[0012] Furthermore, a third and fourth bearing housing are installed on both sides of the first shaft, and a fifth and sixth bearing housing are installed on both sides of the second shaft. Each bearing housing is mounted on a corresponding shaft mounting base, ensuring the coaxial support and load-bearing capacity of the rotating components. By setting paired bearing supports at both ends of each shaft and fixing them with independent shaft mounting bases, the coaxiality and stability of the shafts during rotation are effectively guaranteed, improving load capacity and vibration resistance, reducing the risk of wear or failure caused by eccentric operation, and enhancing the overall reliability and operational stability of the equipment.

[0013] The gear-driven swing arm lifting assembly provided by this utility model has the following advantages:

[0014] The gear-driven swing arm lifting assembly provided by this utility model has a compact structure and optimized transmission path. It achieves stable and efficient lifting motion by driving the motor power shaft with a horizontal motor and meshing with a rack in the vertical direction through a first gear. Compared with the traditional tie rod structure, the gear and rack transmission method not only significantly reduces the requirements for motor load capacity and reduces energy consumption and transmission burden, but also significantly improves positioning accuracy and transmission efficiency. The components are reasonably arranged and highly modular, with advantages such as high rigidity, large load capacity, and stable operation. It is also easy to maintain and can quickly replace key parts, reducing operation and maintenance costs and meeting the comprehensive requirements of modern automated equipment for high performance, high reliability, and easy maintenance. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of the gear swing arm lifting assembly provided by this utility model.

[0016] In the diagram: 1. Horizontal motor; 2. Motor mounting base; 3. Rocker arm; 41. First bearing housing; 42. Second bearing housing; 43. Third bearing housing; 44. Fourth bearing housing; 45. Fifth bearing housing; 46. Sixth bearing housing; 5. Shaft mounting base; 6. Second bearing mounting base; 7. Second bearing housing; 8. Roller; 9. Gear cover; 12. Linear guide rail; 13. Rack mounting base; 14. Rack; 15. Dust cover; 16. Expansion sleeve; 18. First gear; 19. First shaft; 20. Second shaft; 21. Motor drive shaft; 22. Second gear; 23. Third gear. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] See Figure 1This utility model provides a gear-driven swing arm lifting assembly, including a drive mechanism and a transmission mechanism. The drive mechanism includes a horizontally positioned horizontal motor 1, which is mounted on a motor mounting base 2. The horizontal motor 1 is connected to a motor drive shaft 21, which passes through a first bearing housing 41, with its other end located in a second bearing housing 42. A first gear 18 is mounted in the middle of the motor drive shaft 21, positioned between the first bearing housing 41 and the second bearing housing 42. The bearing housings support the motor drive shaft 21 with precision bearings, ensuring its rotational stability and coaxiality, and reducing mechanical vibration and wear. The first gear 18 is fixed to the motor drive shaft 21 by a key connection or interference fit, located in the middle position between the first bearing housing 41 and the second bearing housing 42, resulting in more balanced force distribution and higher transmission efficiency.

[0019] The transmission mechanism is provided with a linear guide 12 perpendicular to the motor power shaft 21. A high-precision linear slider is installed on the linear guide 12. A strip plate is installed on the slider. A rack 14 for meshing with the first gear 18 is installed on the strip plate.

[0020] It is also provided with a second gear 22 and a third gear 23 that mesh with the rack 14. The second gear 22 and the third gear 23 are respectively located in front of and behind the first gear 18.

[0021] The first shaft 19 and the second shaft 20 are respectively installed in the hub holes of the second gear 22 and the third gear 23. The first shaft 19 is equipped with a third bearing seat 43 and a fourth bearing seat 44 on both sides, and the second shaft 20 is equipped with a fifth bearing seat 45 and a sixth bearing seat 46 on both sides. Each bearing seat is installed on a corresponding shaft seat mounting base 5 to ensure the coaxial support and load-bearing capacity of the rotating parts.

[0022] Teardrop-shaped swing arms 3 are respectively installed at both ends of the first shaft 19 and the second shaft 20. The swing arms 3 are asymmetrically designed, and the narrow part of the swing arms 3 is connected to rollers 8 through a shaft structure. The rollers 8 are used to contact and move with the supported or guided structure to keep the structural components guided and stable during the lifting process.

[0023] The first shaft 19, the second shaft 20, and the rocker arm 3 are provided with expansion sleeves 16. An expansion sleeve 16 is provided between the first shaft 19 and the second gear 22, and an expansion sleeve 16 is provided between the second shaft 20 and the third gear 23. The expansion sleeve 16 provides a keyless connection through radial tensioning, ensuring the reliability of torque transmission and facilitating assembly, disassembly, and adjustment.

[0024] To ensure the cleanliness and safety of the transmission system during operation, a dust cover 15 is provided to cover the linear guide rail 12, slider, and rack 14. The upper shell of the dust cover 15 has clearance openings to allow the first gear 18, second gear 22, and third gear 23 to pass through and mesh with the rack 14. A gear cover 9 is provided above the clearance openings and is screwed onto the dust cover 15, further improving operational safety and preventing operators from accidentally touching rotating parts. The dust cover 15 can be made of high-strength plastic or lightweight metal sheet, effectively isolating external dust and foreign objects from intrusion and extending the service life of the guide rail and rack.

[0025] The gear-driven swing arm lifting assembly provided by this utility model has the following advantages:

[0026] The gear-driven swing arm lifting assembly provided by this utility model has a compact structure and optimized transmission path. It achieves stable and efficient lifting motion by driving the motor power shaft with a horizontal motor and meshing with a rack in the vertical direction through a first gear. Compared with the traditional tie rod structure, the gear and rack transmission method not only significantly reduces the requirements for motor load capacity and reduces energy consumption and transmission burden, but also significantly improves positioning accuracy and transmission efficiency. The components are reasonably arranged and highly modular, with advantages such as high rigidity, large load capacity, and stable operation. It is also easy to maintain and can quickly replace key parts, reducing operation and maintenance costs and meeting the comprehensive requirements of modern automated equipment for high performance, high reliability, and easy maintenance.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 gear-driven swing arm lifting assembly, characterized in that, The system includes a horizontal motor (1) arranged in a horizontal direction, the horizontal motor (1) being connected to a motor drive shaft (21), the motor drive shaft (21) passing through a first bearing seat (41) and extending into a second bearing seat (42), and a first gear (18) being fixedly installed on the motor drive shaft (21). A linear guide rail (12) perpendicular to the motor power shaft (21) is provided. A slider is slidably mounted on the linear guide rail (12). A strip plate is fixedly mounted on the slider. A rack (14) is fixedly mounted on the strip plate. The rack (14) meshes with the first gear (18). A second gear (22) and a third gear (23) are provided to mesh with the rack (14), and the second gear (22) and the third gear (23) are respectively mounted on the first shaft (19) and the second shaft (20); The first shaft (19) and the second shaft (20) are respectively connected to two swing arms (3), and the narrow part of the swing arm (3) is connected to a roller (8) through a shaft structure.

2. The gear swing arm lifting assembly according to claim 1, characterized in that, A sleeve (16) is provided between the first shaft (19) and the second gear (22), and between the second shaft (20) and the third gear (23).

3. The gear-mounted swing arm lifting assembly according to claim 1, characterized in that, The linear guide (12), slider and rack (14) are covered with a dust cover (15). The dust cover (15) has a clearance opening for the first gear (18), the second gear (22) and the third gear (23) to pass through. A gear cover (9) is provided above the clearance opening. The gear cover (9) is fixedly installed on the dust cover (15).

4. The gear-mounted swing arm lifting assembly according to claim 1, characterized in that, The second gear (22) and the third gear (23) are respectively located in front of and behind the first gear (18).

5. The gear-mounted swing arm lifting assembly according to claim 1, characterized in that, The first shaft (19) is equipped with a third bearing seat (43) and a fourth bearing seat (44) on both sides respectively, and the second shaft (20) is equipped with a fifth bearing seat (45) and a sixth bearing seat (46) on both sides respectively. Each bearing seat is installed on a shaft seat mounting base (5).

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