Two-stage oscillating-tooth transmission speed reducer arranged concentrically for lifting mechanism

Abstract

The utility model discloses a two -stage live tooth drive reduction gear for concentric arrangement hoisting mechanism, including two symmetrical and interval setting support seat, rotationally arranged drum between two support seats, and the end of one support seat is installed with drive motor, and drive motor is connected with two -stage live tooth drive reduction gear, and two -stage live tooth drive reduction gear is located the inside of drum, and two -stage live tooth drive reduction gear is engaged with drum. Install two -stage live tooth drive reduction gear in the inside of drum to reduce the floor area.

Description

Technical Field

[0001] This utility model relates to the field of crane lifting mechanisms, specifically to a two-stage live gear transmission reducer for a concentrically arranged lifting mechanism. Background Technology

[0002] Lifting mechanisms are widely used in hoisting machinery, metallurgy, mining, chemical industry, shipbuilding, and other fields that require lifting objects. A lifting mechanism mainly consists of a motor, drum, reducer, coupling, and brake. The reducer is the power transmission device of the lifting mechanism and is one of its core components.

[0003] With the rapid development of science and technology, and the improvement of modern design and manufacturing capabilities, the development of lifting mechanisms is trending towards lightweighting, including features such as small size and light weight. New types, new technologies, new materials and new processes are used to achieve the goal of lightweighting, thereby saving manufacturing costs, reducing energy consumption, and promoting resource conservation and sustainable development. Summary of the Invention

[0004] This utility model provides a two-stage live gear transmission reducer for a concentrically arranged lifting mechanism.

[0005] The technical solution of this utility model is implemented as follows: a two-stage movable gear transmission reducer for a concentrically arranged lifting mechanism includes two symmetrical and spaced support seats, a drum is rotatably arranged between the two support seats, a drive motor is installed at the end of one of the support seats, the drive motor is connected to the two-stage movable gear transmission reducer, the two-stage movable gear transmission reducer is located inside the drum, and the two-stage movable gear transmission reducer meshes with the drum.

[0006] The two-stage live gear reducer includes a primary double eccentric input shaft and a secondary double eccentric input shaft. The secondary double eccentric input shaft is a hollow shaft and is sleeved outside the primary double eccentric input shaft. The primary double eccentric input shaft is connected to the drive motor.

[0007] The two eccentric blocks of the first-stage double eccentric input shaft are rotatably connected to a first-stage shock disk. Two first-stage intermediate movable gears are set between the two first-stage shock disks. A first-stage right movable gear and a first-stage left movable gear are set on both sides of the two first-stage shock disks respectively. The first-stage right movable gear and the first-stage left movable gear pass through the first-stage intermediate movable gear and the first-stage shock disk. The first-stage right movable gear and the first-stage left movable gear are fixedly connected by bolts.

[0008] The first-stage left movable gear frame, the first-stage right movable gear frame, and the first-stage intermediate movable gear frame are provided with several movable gear slots in their circumference. A first-stage movable gear shaft is installed in the movable gear slot of the first-stage left movable gear frame and the adjacent first-stage intermediate movable gear frame. A first-stage movable gear shaft is also installed in the movable gear slot of the first-stage right movable gear frame and the adjacent first-stage intermediate movable gear frame. A first-stage movable gear roller is fitted on the first-stage movable gear shaft. A first-stage gear ring is fitted on the outside of the first-stage movable gear. An output disc is fixedly connected to the end of the first-stage right movable gear frame by bolts.

[0009] The output disk is fixedly connected to the outside of the secondary double eccentric input shaft via a spline. The two eccentric blocks of the secondary double eccentric input shaft are rotatably connected to the outside of the secondary shock disk. The secondary intermediate movable gear frame is fitted on both sides of the secondary shock disk and outside the secondary double eccentric input shaft. The secondary left movable gear frame and the secondary right movable gear frame are respectively set on both sides of the secondary intermediate movable gear frame. The secondary left movable gear frame, the secondary right movable gear frame and the secondary intermediate movable gear frame have several movable gear slots circumferentially. The secondary movable gear shaft is installed in the movable gear slot of the secondary left movable gear frame and the adjacent secondary intermediate movable gear frame. The secondary movable gear shaft is also installed in the movable gear slot of the secondary right movable gear frame and the adjacent secondary intermediate movable gear frame. The secondary movable gear roller is fitted on the secondary movable gear shaft. The secondary movable gear ring is fitted on the outside of the secondary movable gear roller.

[0010] The secondary left movable gear frame is fixedly connected to the primary gear ring, and the end of the secondary right movable gear frame is fixedly connected to a support base adjacent to it.

[0011] The technical solution of this utility model has the following positive effects: This utility model installs the two-stage live gear transmission reducer inside the drum, thereby reducing the floor space; both the first and second stage transmissions adopt a double shock disk structure, with the double shock disk shafts arranged symmetrically at 180°, which can effectively eliminate the defects of single shock disk structures such as vibration, high noise, and unstable movement; the second stage double eccentric input shaft is a hollow shaft, which is sleeved on the first stage double eccentric input shaft, making the overall structure compact; in the first and second stage transmissions, live gear slots are opened on the left, right, and middle live gear frames, and the live gear slots, the inner tooth profiles of the first and second stage gear rings, and the first and second stage live gear shaft retaining rings together constrain the live gear shaft and live gear roller to make regular movements. This two-stage live gear reducer has high load-bearing capacity and long service life when working. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the two-stage movable gear reducer of this utility model.

[0013] Figure 2 This is a cross-sectional view of the two-stage live gear reducer of this utility model.

[0014] Figure 3 This is a schematic diagram of the connection of the two-stage transmission of this utility model.

[0015] Figure 4This is a schematic diagram of the structure of a primary gear ring.

[0016] Figure 5 This is a schematic diagram showing the connection between the first-stage transmission and the second-stage transmission.

[0017] Figure 6 This is a schematic diagram of the connection structure between the first-stage left-left movable gear frame and the first-stage shock disk.

[0018] Figure 7 This is a schematic diagram of the exploded structure of the first-stage left movable gear frame, the first-stage middle movable gear frame, the first-stage shock disk, and the first-stage right movable gear frame.

[0019] Figure 8 This is a schematic diagram of the exploded structure of the secondary left movable gear frame, the secondary middle movable gear frame, the secondary shock disk, and the secondary right movable gear frame.

[0020] Figure 9 This is a schematic diagram of the structure of a two-stage gear ring.

[0021] Figure 10 This is a schematic diagram of the structure of a two-stage double eccentric input shaft.

[0022] Figure 11 This is a schematic diagram of the structure of a single-stage double eccentric input shaft.

[0023] Figure 12 This is a schematic diagram showing the connection between the primary double eccentric input shaft, the secondary double eccentric input shaft, and the output disk.

[0024] Figure 13 This is a schematic diagram of the hoisting mechanism.

[0025] Figure 14 This is a schematic diagram showing the connection between the drum and the gear reducer.

[0026] Reference numerals: 1. Primary gear ring; 2. Support base; 3. Primary left movable gear frame; 4. Drum; 5. Primary shock plate; 6. Primary intermediate movable gear frame; 7. Primary right movable gear frame; 8. Drive motor; 9. Output plate; 10. Secondary left movable gear frame; 11. Secondary gear ring; 12. Secondary intermediate movable gear frame; 13. Secondary shock plate; 14. Secondary right movable gear frame; 15. Movable gear groove one; 16. Secondary movable gear roller; 17. Secondary movable gear shaft; 18. Movable gear groove two; 19. Primary movable gear shaft; 20. Primary movable gear roller; 21. Primary double eccentric input shaft; 22. Secondary double eccentric input shaft; 23. Primary movable gear shaft retaining ring; 24. Secondary movable gear shaft retaining ring. Detailed Implementation

[0027] like Figure 1-14As shown, a two-stage movable gear transmission reducer for a concentrically arranged lifting mechanism includes two symmetrically spaced support seats 2, with a drum 4 rotatably arranged between the two support seats 2. A drive motor 8 is installed at the end of one of the support seats 2, and the drive motor 8 is connected to the two-stage movable gear transmission reducer. The two-stage movable gear transmission reducer is located inside the drum 4 and meshes with the drum 4.

[0028] Specifically, such as Figure 1 As shown, a two-stage movable gear reducer is installed inside the drum 4 to reduce the floor space. The two-stage movable gear reducer is driven by the drive motor 8, and the drum 4, which meshes with the two-stage movable gear reducer, rotates.

[0029] The two-stage live gear transmission reducer includes a primary double eccentric input shaft 21 and a secondary double eccentric input shaft 22. The secondary double eccentric input shaft 22 is a hollow shaft and is sleeved on the outside of the primary double eccentric input shaft 21. The primary double eccentric input shaft 21 is connected to the drive motor 8.

[0030] The two eccentric blocks of the first-stage double eccentric input shaft 21 are rotatably connected to a first-stage shock disk 5. Two first-stage intermediate movable gears 6 are arranged between the two first-stage shock disks 5. A first-stage right movable gear 7 and a first-stage left movable gear 3 are respectively arranged on both sides of the two first-stage shock disks 5. The first-stage right movable gear 7 and the first-stage left movable gear 3 are arranged through the first-stage intermediate movable gear 6 and the first-stage shock disk 5. The first-stage right movable gear 7 and the first-stage left movable gear 3 are fixedly connected by bolts. Specifically, as shown in the figure, through holes are distributed around the circumference of the first-stage shock disk 5. The diameter of the through holes is larger than the diameter of the insertion rods of the first-stage right movable gear 7 and the first-stage left movable gear 3.

[0031] The first-stage left movable gear frame 3, the first-stage right movable gear frame 7, and the first-stage intermediate movable gear frame 6 are circumferentially provided with several movable gear slots 15. A first-stage movable gear shaft 19 is installed in the movable gear slots 15 of the first-stage left movable gear frame 3 and the adjacent first-stage intermediate movable gear frame 6. A first-stage movable gear shaft 19 is also installed in the movable gear slots 15 of the first-stage right movable gear frame 7 and the adjacent first-stage intermediate movable gear frame 6. A first-stage movable gear roller 20 is fitted onto the first-stage movable gear shaft 19. A first-stage gear ring 1 is fitted around the outside of the first-stage movable gear 20. An output disc 9 is bolted to the end of the first-stage right movable gear frame 7; specifically, as shown... Figure 5 As shown, a primary gear shaft retaining ring 23 is provided on the left side of the primary gear shaft 19 on the left primary gear carrier 3 and on the right side of the primary gear shaft 19 on the right primary gear carrier 7 to restrict the axial displacement of the primary gear shaft 19.

[0032] Specifically, the first-stage transmission is input by the first-stage double eccentric input shaft 21 connected to the drive motor 8, which drives the first-stage shock disk to perform eccentric motion. The first-stage gear ring is a fixed part. The inner tooth profile of the first-stage gear ring, the first-stage right movable gear frame, and the first-stage left movable gear frame together constrain the movement of the first-stage movable gear shaft and the first-stage movable gear roller. The output disk 9 is fixedly connected to the first-stage right movable gear frame, thereby driving the output disk 9 to rotate.

[0033] The output disk 9 is fixedly connected to the outside of the secondary double eccentric input shaft 22 via a spline. A secondary shock disk 13 is rotatably connected to the outside of each of the two eccentric blocks of the secondary double eccentric input shaft 22. A secondary intermediate gear frame 12 is fitted on both sides of the secondary shock disk 13 and outside the secondary double eccentric input shaft 22. A secondary left gear frame 10 and a secondary right gear frame 14 are respectively provided on both sides of the secondary intermediate gear frame 12. Several movable teeth are circumferentially arranged on the secondary left gear frame 10, the secondary right gear frame 14, and the secondary intermediate gear frame 12. Secondary movable gear shafts 17 are installed in the movable gear slots 18 of the secondary left movable gear frame 10 and the adjacent secondary intermediate movable gear frame 12. Secondary movable gear shafts 17 are also installed in the movable gear slots 18 of the secondary right movable gear frame 14 and the adjacent secondary intermediate movable gear frame 12. Secondary movable gear rollers 16 are mounted on the secondary movable gear shafts 17. A secondary gear ring 11 is mounted on the outside of the secondary movable gear roller 16 via bearings. A gear ring is provided on the outer circumference of the secondary gear ring 11. The outer gear ring of the secondary gear ring 11 meshes with the drum 4. Figure 3 As shown, secondary live gear shaft retaining rings 24 are provided on the left side of the secondary live gear shaft 17 on the secondary left live gear carrier 10 and on the right side of the secondary live gear shaft 17 on the secondary right live gear carrier 14 to restrict the axial displacement of the secondary live gear shaft 17.

[0034] Specifically, the output disk 9 is connected to the secondary double eccentric input shaft 22 via a spline, thereby transmitting power from the primary transmission to the secondary transmission. The secondary shock disk 13 performs eccentric motion, driving the secondary live gear roller 16 and the secondary live gear shaft 17 to move along the internal tooth profile of the secondary gear ring 11. The secondary live gear shaft 17 drives the secondary gear ring 11 to rotate, thereby driving the secondary gear ring 11 to work. The secondary gear ring is a moving part, and the secondary gear ring 11 meshes with the drum 4 to realize the rotation of the drum 4.

[0035] The secondary left movable gear 10 is fixedly connected to the primary gear ring 1, and the end of the secondary right movable gear 14 is fixedly connected to the support seat 2 adjacent to it.

[0036] The working process is as follows: The first-stage double eccentric input shaft 21 is connected to the drive motor 8 to input power, driving the first-stage shock disk 5 to rotate; in the first-stage transmission, the first-stage gear ring 1 is fixed, and the first-stage shock disk 5 performs eccentric motion while driving the first-stage live gear roller 20 and the first-stage live gear shaft 19 to move along the inner tooth profile of the first-stage gear ring 1, such as... Figure 4As shown, the internal tooth profile of the first-stage gear ring 1 is cycloidal, and the first-stage live gear shaft 19 drives the first-stage right live gear carrier 7, the first-stage left live gear carrier 3 and the first-stage middle live gear carrier 6 to rotate; in the first-stage transmission, the first-stage gear ring 1 is fixed.

[0037] The first-stage right sprocket 7 is bolted to the output disc 9, and the two rotate together. The second-stage double eccentric input shaft 22 is connected to the output disc 9 via a spline. The output disc 9 drives the second-stage double eccentric input shaft 22 to rotate, and the output disc 9 transmits the first-stage transmission to the second-stage transmission. In the second-stage transmission, the second-stage right sprocket 14, the second-stage intermediate sprocket 12, and the second-stage left sprocket 10 are fixedly connected by bolts. The second-stage left sprocket 10 is bolted to the first-stage gear ring 11. The second-stage shockwave disc 13 drives the second-stage sprocket roller 16 and the second-stage sprocket shaft 17 to move along the inner tooth profile of the second-stage gear ring 11, such as... Figure 12 The internal tooth profile of the secondary gear ring 11 shown is cycloidal, and the secondary movable gear shaft 17 drives the secondary gear ring 11 to rotate; in the secondary transmission, the secondary right movable gear frame 14, the secondary middle movable gear frame 12 and the secondary left movable gear frame 10 are fixed.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A two-stage movable gear reducer for a concentrically arranged hoisting mechanism, characterized in that: It includes two symmetrical and spaced-apart support seats, with a drum rotatably positioned between the two support seats. A drive motor is installed at the end of one of the support seats, and the drive motor is connected to a two-stage movable gear reducer. The two-stage movable gear reducer is located inside the drum and meshes with the drum.

2. The two-stage live gear transmission reducer for a concentrically arranged lifting mechanism according to claim 1, characterized in that: The two-stage live gear reducer includes a primary double eccentric input shaft and a secondary double eccentric input shaft. The secondary double eccentric input shaft is a hollow shaft and is sleeved outside the primary double eccentric input shaft. The primary double eccentric input shaft is connected to the drive motor.

3. The two-stage movable gear reducer for a concentrically arranged lifting mechanism according to claim 1, characterized in that: The two eccentric blocks of the first-stage double eccentric input shaft are rotatably connected to a first-stage shock disk. Two first-stage intermediate movable gears are set between the two first-stage shock disks. A first-stage right movable gear and a first-stage left movable gear are set on both sides of the two first-stage shock disks respectively. The first-stage right movable gear and the first-stage left movable gear pass through the first-stage intermediate movable gear and the first-stage shock disk. The first-stage right movable gear and the first-stage left movable gear are fixedly connected by bolts.

4. A two-stage movable gear reducer for a concentrically arranged lifting mechanism according to claim 1, characterized in that: The first-stage left movable gear frame, the first-stage right movable gear frame, and the first-stage intermediate movable gear frame are provided with several movable gear slots in their circumference. A first-stage movable gear shaft is installed in the movable gear slot of the first-stage left movable gear frame and the adjacent first-stage intermediate movable gear frame. A first-stage movable gear shaft is also installed in the movable gear slot of the first-stage right movable gear frame and the adjacent first-stage intermediate movable gear frame. A first-stage movable gear roller is fitted on the first-stage movable gear shaft. A first-stage gear ring is fitted on the outside of the first-stage movable gear. An output disc is fixedly connected to the end of the first-stage right movable gear frame by bolts.

5. A two-stage live gear transmission reducer for a concentrically arranged lifting mechanism according to claim 1, characterized in that: The output disk is fixedly connected to the outside of the secondary double eccentric input shaft via a spline. The two eccentric blocks of the secondary double eccentric input shaft are rotatably connected to the outside of the secondary shock disk. The secondary intermediate movable gear frame is fitted on both sides of the secondary shock disk and outside the secondary double eccentric input shaft. The secondary left movable gear frame and the secondary right movable gear frame are respectively set on both sides of the secondary intermediate movable gear frame. The secondary left movable gear frame, the secondary right movable gear frame and the secondary intermediate movable gear frame have several movable gear slots circumferentially. The secondary movable gear shaft is installed in the movable gear slot of the secondary left movable gear frame and the adjacent secondary intermediate movable gear frame. The secondary movable gear shaft is also installed in the movable gear slot of the secondary right movable gear frame and the adjacent secondary intermediate movable gear frame. The secondary movable gear roller is fitted on the secondary movable gear shaft. The secondary movable gear ring is fitted on the outside of the secondary movable gear roller.

6. A two-stage live gear transmission reducer for a concentrically arranged lifting mechanism according to claim 3, characterized in that: The secondary left movable gear frame is fixedly connected to the primary gear ring, and the end of the secondary right movable gear frame is fixedly connected to a support base adjacent to it.

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