Double-speed reduction gearbox

Abstract

The utility model relates to the technical field of speed reducers, and discloses a double-speed reduction gearbox which comprises a bottom box, one side of the interior of the bottom box is rotationally connected with a first input shaft, one side of the outer wall of the first input shaft is fixedly connected with a second driving gear, and the other side of the interior of the bottom box is rotationally connected with a second input shaft. A first driving gear is fixedly connected to one side of the outer wall of the second input shaft, a first transmission gear is rotatably connected to one side of the interior of the bottom box and meshed with the outer wall of the first driving gear, a rotating disc is rotatably connected to the interior of the first transmission gear, and a rotating shaft is fixedly connected to the center of the interior of the rotating disc. According to the reduction gearbox, the second transmission gear can drive the rotating disc to rotate, the centrifugal force of the clamping ball can enable the rotating disc to break away from the limitation of the first transmission gear, and therefore the second reduction gear is driven to rotate at a high speed, the problem that pause is prone to occurring during speed regulation of an existing reduction gearbox is solved, the service life of the reduction gearbox is prolonged, and the stability of the reduction gearbox is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a double-speed reduction box. Background Art

[0002] Gearboxes are usually used to reduce rotation speed and increase torque. It consists of a series of gears that use different gear ratios to achieve the effect of deceleration and acceleration. Gearboxes are widely used in various mechanical equipment, such as automotive transmission systems, industrial production lines, etc. When using a gearbox, you need to pay attention to correct installation and maintenance to ensure its normal operation and service life.

[0003] The reduction gearbox usually uses gear transmission to achieve deceleration. It consists of a series of gears with different numbers of teeth. When the input shaft rotates, power is transmitted through gear meshing, thereby reducing the output shaft speed and increasing the torque, thereby achieving deceleration. The reduction gearbox realizes different speed and torque requirements, improves transmission efficiency, and effectively reduces the size and weight of the equipment, reducing noise and vibration.

[0004] However, the existing reduction gearbox is prone to jerking when shifting gears during the speed regulation process, and is prone to gear shifting failures. Multiple gear shifts are required, which will increase the loss of the reduction gearbox and make it more susceptible to damage. At the same time, when the reduction gearbox shifts gears, it is necessary to shut down the machine, which greatly affects the production efficiency. Therefore, a dual-speed reduction gearbox is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a dual-speed reduction gearbox, aiming to improve the problem of gearboxes in the prior art being prone to jerking during gear shifting during speed regulation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A two-speed reduction gearbox comprises a bottom box, wherein one side of the bottom box is rotatably connected with an input shaft 1, one side of the outer wall of the input shaft 1 is fixedly connected with a driving gear 2, the other side of the bottom box is rotatably connected with the input shaft 2, one side of the outer wall of the input shaft 2 is fixedly connected with the driving gear 1, one side of the bottom box is rotatably connected with a transmission gear 1, the transmission gear 1 is meshed with the outer wall of the driving gear 1, a rotating disk is rotatably connected to the transmission gear 1 inside the transmission gear 1, the inner center of the rotating disk is fixedly connected with a rotating shaft, one side of the outer wall of the rotating shaft is rotatably connected with a transmission gear 2, one end of the rotating shaft is rotatably connected to the inside of the bottom box, the transmission gear 2 is meshed with the outer wall of the driving gear 2, an annular array of springs are arranged inside the rotating disk, one end of the spring is fixedly connected to the inner wall of the rotating disk, and the other end of the spring is fixedly connected with a card ball, the inner wall of the transmission gear 1 is provided with an annular array of card grooves, the outer wall of the card ball is slidably connected to the inner wall of the card groove, one side of the bottom box is rotatably connected with an output shaft, and a reduction assembly is arranged on the outer wall of the output shaft;

[0008] As a further description of the above technical solution:

[0009] The reduction assembly comprises a reduction gear 1 and a reduction gear 2, wherein the interior of the reduction gear 1 is fixedly connected to the outer wall of the output shaft, the interior of the reduction gear 2 is fixedly connected to the outer wall of the rotating shaft, and the outer wall of the reduction gear 1 is meshed with the outer wall of the reduction gear 2;

[0010] As a further description of the above technical solution:

[0011] The top of the bottom box is fixedly connected to a top cover, and the bottom of the bottom box is fixedly connected to a bottom plate of the annular array;

[0012] As a further description of the above technical solution:

[0013] The bottom plate is fixedly connected with a mounting column inside, and the mounting column is threadedly connected with a threaded column inside;

[0014] As a further description of the above technical solution:

[0015] The top of the threaded column is fixedly connected with a handle, and the bottom of the handle is fixedly connected with a limiting block;

[0016] As a further description of the above technical solution:

[0017] The outer wall of the limit block is rotatably connected to a moving block, and the interior of the mounting column is fixedly connected to a sliding rod;

[0018] As a further description of the above technical solution:

[0019] The interior of the moving block is rotatably connected to a transmission rod of an annular array, and the outer wall of the sliding rod is slidably connected to a sliding plate of an annular array;

[0020] As a further description of the above technical solution:

[0021] One side of the transmission rod is rotatably connected to the top of the slide plate, and the bottom of the slide plate is fixedly connected to a fixing plate.

[0022] The utility model has the following beneficial effects:

[0023] In the utility model, firstly, the input shaft 2 is rotated at a low speed, so that the driving gear 1 can drive the transmission gear 1 to rotate, and then the rotating disk is driven to rotate through the engagement of the card ball and the card slot, thereby controlling the rotation of the reduction gear 2 on the rotating shaft. The input shaft 1 can also be rotated at a high speed, so that the driving gear 2 can drive the transmission gear 2, and the transmission gear 2 will drive the rotating disk to rotate. The centrifugal force of the card ball can make the rotating disk break away from the restriction of the transmission gear 1, thereby driving the reduction gear 2 to rotate at a high speed, solving the problem that the existing reduction box is prone to setbacks during speed regulation, and improving the service life and stability of the reduction box.

[0024] In the utility model, firstly, the threaded column is driven to rotate by the handle, and then the threaded column can drive the moving block, and then the transmission rod drives the slide plate to slide outward on the slide rod, so that the fixing plate is inserted into the preset slot, so that the reducer is fixed, which solves the problem of inconvenient fixation of the reducer and improves the convenience of installing the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of a dual-speed reduction gearbox proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the bottom box of a double-speed reduction box proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the rotating disk structure of a dual-speed reduction gearbox proposed by the utility model;

[0028] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of the mounting column of a dual-speed reduction gearbox.

[0029] Legend:

[0030] 1. Bottom box; 2. Input shaft 1; 3. Bottom plate; 4. Mounting column; 5. Top cover; 6. Output shaft; 7. Reduction gear 1; 8. Reduction gear 2; 9. Input shaft 2; 10. Drive gear 1; 11. Transmission gear 1; 12. Transmission gear 2; 13. Drive gear 2; 14. Rotating shaft; 15. Spring; 16. Card ball; 17. Card slot; 18. Handle; 19. Threaded column; 20. Moving block; 21. Limit block; 22. Transmission rod; 23. Slide plate; 24. Slide rod; 25. Fixed plate; 26. Rotating disk. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a two-speed reduction box, including a bottom box 1, one side of the bottom box 1 is rotatably connected to an input shaft 2, one side of the outer wall of the input shaft 2 is fixedly connected to a driving gear 13, the other side of the bottom box 1 is rotatably connected to an input shaft 29, one side of the outer wall of the input shaft 29 is fixedly connected to a driving gear 10, one side of the bottom box 1 is rotatably connected to a transmission gear 11, the transmission gear 11 is meshed with the outer wall of the driving gear 10, the transmission gear 11 is rotatably connected to a rotating disk 26, the center of the rotating disk 26 is fixed A rotating shaft 14 is connected, and a transmission gear 2 12 is rotatably connected to one side of the outer wall of the rotating shaft 14. One end of the rotating shaft 14 is rotatably connected to the inside of the bottom box 1. The transmission gear 2 12 is meshed with the outer wall of the driving gear 2 13. A spring 15 in an annular array is arranged inside the rotating disk 26. One end of the spring 15 is fixedly connected to the inner wall of the rotating disk 26. The other end of the spring 15 is fixedly connected to a card ball 16. A card groove 17 in an annular array is opened on the inner wall of the transmission gear 11. The outer wall of the card ball 16 is slidably connected to the inner wall of the card groove 17. One side of the inside of the bottom box 1 is rotatably connected to the output shaft 6;

[0033] Specifically, the input shaft 29 is used to access a low speed. When the input shaft 29 starts to rotate, the driving gear 10 thereon will rotate accordingly. Since the driving gear 10 and the transmission gear 11 are meshed with each other, the transmission gear 11 will also rotate accordingly. Under the action of the spring 15, the card ball 16 located on the rotating disk 26 will be firmly stuck in the card groove 17 on the inner wall of the transmission gear 11. In this way, the rotation of the transmission gear 11 can drive the rotating disk 26 to rotate together and transmit the force to the rotating shaft 14. Similarly, the input shaft 29 is used to access a high speed. When the input shaft 29 starts to rotate, the driving gear 10 thereon will rotate accordingly. Since the driving gear 10 and the transmission gear 11 are meshed with each other, the transmission gear 11 will also rotate accordingly. When the input shaft 2 starts to rotate, the driving gear 2 13 thereon will also rotate accordingly, and the driving gear 2 13 will drive the transmission gear 2 12 to rotate together, thereby causing the rotating shaft 14 to rotate. When the speed is high, the rotating disk 26 will increase the speed as the rotating shaft 14 rotates, which will cause the card ball 16 inside the rotating disk 26 to generate a greater centrifugal force. Due to the existence of centrifugal force, the card ball 16 will overcome the force of the spring 15 and shrink inward, thereby causing it to slide out of the card slot 17. In this way, the transmission gear 11 will enter an idling state and will no longer affect the rotation of the rotating shaft 14.

[0034] Reference Figure 1 and Figure 2 The outer wall of the output shaft 6 is provided with a reduction assembly, the reduction assembly includes a reduction gear 1 7 and a reduction gear 2 8, the reduction gear 1 7 is internally fixedly connected to the outer wall of the output shaft 6, the reduction gear 2 8 is internally fixedly connected to the outer wall of the rotating shaft 14, and the outer wall of the reduction gear 1 7 is meshed with the outer wall of the reduction gear 2 8;

[0035] Specifically, the reduction gear 2 8 is fixed on the rotating shaft 14. When the force is transmitted to the reduction gear 2 8, it can be transmitted from the reduction gear 2 8 to the reduction gear 1 7, and the reduction gear 1 7 drives the output shaft 6 to rotate and output, thereby achieving a deceleration effect.

[0036] Reference Figure 1 and Figure 4 The top of the bottom box 1 is fixedly connected with a top cover 5, the bottom of the bottom box 1 is fixedly connected with a bottom plate 3 of an annular array, a mounting column 4 is fixedly connected inside the bottom plate 3, a threaded column 19 is threadedly connected inside the mounting column 4, a handle 18 is fixedly connected to the top of the threaded column 19, a limit block 21 is fixedly connected to the bottom of the handle 18, a moving block 20 is rotatably connected to the outer wall of the limit block 21, a sliding rod 24 is fixedly connected inside the mounting column 4, a transmission rod 22 of an annular array is rotatably connected inside the moving block 20, a slide plate 23 of an annular array is slidably connected to the outer wall of the sliding rod 24, one side of the transmission rod 22 is rotatably connected to the top of the slide plate 23, and a fixed plate 25 is fixedly connected to the bottom of the slide plate 23;

[0037] Specifically, when the reducer is fixed, the handle 18 can be used to drive the threaded column 19 to rotate. As the threaded column 19 rotates, it will use the limit block 21 to push the moving block 20 to move downward. During the downward movement of the moving block 20, it can push the slide plate 23 through the transmission rod 22, so that the slide plate 23 slides outward along the slide rod 24. When the slide plate 23 slides outward, it can drive the fixed plate 25 at the bottom of the slide plate 23 to be stuck in the preset hole groove, thereby effectively fixing the reducer. This fixing method is not only simple and reliable, but also can ensure that the reducer remains stable during operation, thereby improving the stability and reliability of the equipment.

[0038] Working principle: Input shaft 29 is used to access low speed, and the driving gear 10 on input shaft 29 will rotate accordingly, thereby driving the transmission gear 11 meshing with it to rotate, and under the action of spring 15, the card ball 16 on the rotating disk 26 will be stuck in the card groove 17 on the inner wall of the transmission gear 11, so that the transmission gear 11 drives the rotating disk 26 to rotate, and the force can be transmitted to the rotating shaft 14, and then to the reduction gear 2 8. Input shaft 12 is used to access high speed, and the driving gear 2 13 on the input shaft 2 will rotate accordingly, and then the driving gear 2 13 drives the transmission gear 2 12 to rotate, so that the rotating shaft 14 rotates accordingly, and thus transmitted to the reduction gear 2 8, and because of the high speed, the rotation The disk 26 will increase its speed as the rotating shaft 14 rotates, and the card ball 16 inside the rotating disk 26 will generate a greater centrifugal force, causing it to overcome the force of the spring 15 and shrink inward, and it will slide out of the card slot 17, causing the transmission gear 11 to idle, and the transmission gear 11 cannot affect the rotation of the rotating shaft 14. When the reducer is fixed, the handle 18 can drive the threaded column 19 to rotate, and the rotation of the threaded column 19 will push the moving block 20 through the limit block 21 to move the moving block 20 downward, and the moving block 20 can push the slide plate 23 through the transmission rod 22, so that the slide plate 23 slides outward on the slide rod 24, thereby driving the bottom fixing plate 25 of the slide plate 23 to be stuck in the preset hole groove, so that the reducer is fixed.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-speed reduction gearbox, comprising a bottom box (1), characterized in that: One side of the bottom box (1) is rotatably connected to an input shaft 1 (2), one side of the outer wall of the input shaft 1 (2) is fixedly connected to a driving gear 2 (13), the other side of the bottom box (1) is rotatably connected to an input shaft 2 (9), one side of the outer wall of the input shaft 2 (9) is fixedly connected to a driving gear 1 (10), one side of the bottom box (1) is rotatably connected to a transmission gear 1 (11), the transmission gear 1 (11) is meshed with the outer wall of the driving gear 1 (10), the transmission gear 1 (11) is rotatably connected to a rotating disk (26), the inner center of the rotating disk (26) is fixedly connected to a rotating shaft (14), and one side of the outer wall of the rotating shaft (14) is rotatably connected to a transmission gear Wheel 2 (12), one end of the rotating shaft (14) is rotatably connected to the inside of the bottom box (1), the transmission gear 2 (12) is meshed with the outer wall of the driving gear 2 (13), a spring (15) in an annular array is arranged inside the rotating disk (26), one end of the spring (15) is fixedly connected to the inner wall of the rotating disk (26), and the other end of the spring (15) is fixedly connected to a locking ball (16), the inner wall of the transmission gear 1 (11) is provided with a locking groove (17) in an annular array, and the outer wall of the locking ball (16) is slidably connected to the inner wall of the locking groove (17), and one side of the inside of the bottom box (1) is rotatably connected to an output shaft (6), and a reduction assembly is arranged on the outer wall of the output shaft (6).

2. A two-speed reduction gearbox according to claim 1, characterized in that: The reduction assembly comprises a reduction gear 1 (7) and a reduction gear 2 (8); the reduction gear 1 (7) is internally fixedly connected to the outer wall of the output shaft (6); the reduction gear 2 (8) is internally fixedly connected to the outer wall of the rotating shaft (14); the outer wall of the reduction gear 1 (7) is meshed with the outer wall of the reduction gear 2 (8).

3. A dual-speed reduction gearbox according to claim 1, characterized in that: The top of the bottom box (1) is fixedly connected to a top cover (5), and the bottom of the bottom box (1) is fixedly connected to a bottom plate (3) of an annular array.

4. A dual-speed reduction gearbox according to claim 3, characterized in that: The bottom plate (3) is internally fixedly connected with a mounting column (4), and the mounting column (4) is internally threadedly connected with a threaded column (19).

5. A dual-speed reduction gearbox according to claim 4, characterized in that: The top of the threaded column (19) is fixedly connected to a handle (18), and the bottom of the handle (18) is fixedly connected to a limiting block (21).

6. A two-speed reduction gearbox according to claim 5, characterized in that: The outer wall of the limit block (21) is rotatably connected to a moving block (20), and the interior of the mounting column (4) is fixedly connected to a sliding rod (24).

7. A two-speed reduction gearbox according to claim 6, characterized in that: The interior of the moving block (20) is rotatably connected to a transmission rod (22) in an annular array, and the outer wall of the sliding rod (24) is slidably connected to a sliding plate (23) in an annular array.

8. A two-speed reduction gearbox according to claim 7, characterized in that: One side of the transmission rod (22) is rotatably connected to the top of the slide plate (23), and the bottom of the slide plate (23) is fixedly connected to a fixing plate (25).

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