A speed reducer with adjustable gear ratios

Abstract

This utility model provides a speed reducer with adjustable gear ratios, belonging to the field of speed reducers. It solves the problems of existing speed reducers being unable to be flexibly installed and only providing a fixed reduction ratio. This utility model includes a housing, within which an input shaft and an output shaft are installed. The housing has an inspection port with a transparent plate installed on it. The input shaft has a mounting groove, within which a connecting shaft is installed. A worm gear is installed within the connecting shaft, meshing with a worm wheel, which connects to a lead screw. The connecting shaft has a moving part through which the lead screw passes. A driving wheel is installed on the input shaft, and three driven wheels (one, two, and three) are installed on the output shaft. The driving wheel is fixed to a sliding sleeve, and the input shaft has a sliding groove. The advantages of this utility model are: the worm gear and worm wheel work together to rotate the lead screw, which in turn moves the connecting shaft, allowing the length of the input shaft to be adjusted according to installation needs; the driving wheel slides with the sliding sleeve, and the reduction ratio can be changed by adjusting the driven wheel to be engaged.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducers, and relates to a speed reducer, and more particularly to a speed reducer with adjustable gears. Background Technology

[0002] A speed reducer plays a role in matching the speed and transmitting torque between the prime mover and the working machine or actuator. It is a relatively precise machine, and its purpose is to reduce the speed and increase the torque. There are many types and models of speed reducers, and different types have different uses.

[0003] The positions of the output and input shafts of existing speed reducers are fixed. This means that the position and distance between the power unit and the working mechanism must be precisely controlled during use. Otherwise, the installation of the power unit and the internal components of the working mechanism need to be replaced or even redesigned, which limits the use of the speed reducer. At the same time, different speed reducers also have requirements for the reduction ratio, requiring the use of different models of speed reducers, which increases costs. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a speed reducer that allows for adjustment of the lengths of the input and output shafts and the reduction ratio.

[0005] This utility model can be achieved through the following technical solution: a speed reducer with adjustable gears, including a housing, an input shaft and an output shaft installed inside the housing, a maintenance port provided on the housing, a transparent plate installed on the maintenance port, an installation groove provided on the input shaft, a connecting shaft installed in the installation groove, a worm gear installed in the connecting shaft, the worm gear meshing with a worm wheel, the worm wheel connecting to a lead screw, a moving part provided on the connecting shaft, the lead screw passing through the moving part, a driving wheel installed on the input shaft, and driven wheel one, driven wheel two and driven wheel three installed on the output shaft.

[0006] In the aforementioned adjustable speed reducer, a positioning part is provided on the transparent plate, a positioning groove is provided on the inspection port, and a bolt passes through the positioning part and the positioning groove.

[0007] In the aforementioned adjustable speed reducer, a handle is provided on the transparent plate, a connecting post is provided on the handle, an oil injection hole is provided on the connecting post, and a spiral plug is provided on the oil injection hole.

[0008] In the aforementioned adjustable speed reducer, the number of drive wheels is three.

[0009] In the aforementioned adjustable speed reducer, the drive wheel is fixed on the sliding sleeve, the input shaft has a sliding groove, the sliding groove has a positioning hole, the sliding sleeve has a fixing hole between the drive wheel, and two bolts pass through the fixing hole and the positioning hole.

[0010] In the aforementioned adjustable speed reducer, the number of teeth of driven wheel one is greater than that of driven wheel two and driven wheel three, and the number of teeth of driven wheel two is greater than that of driven wheel three.

[0011] In the aforementioned adjustable speed reducer, driven wheel one, driven wheel two, and driven wheel three extend with fixed parts, and bolt three passes through the fixed parts and the output shaft.

[0012] In the aforementioned adjustable speed reducer, mounting shafts are provided at both ends of the output shaft, and connecting rods are mounted on the mounting shafts. Screws pass through the connecting rods and the mounting shafts.

[0013] Compared with the prior art, the advantages of this utility model are as follows: the worm and worm wheel work together to drive the lead screw to rotate, and then the lead screw drives the connecting shaft to move, so the length of the input shaft can be adjusted according to the installation needs; the output shaft is equipped with mounting shafts at both ends, and the length can be adjusted and different shafts can be connected by replacing the mounting shafts, which improves the versatility of the installation; the driving wheel slides with the sliding sleeve, and the driven wheel to be engaged can be adjusted by sliding the sliding sleeve to change the reduction ratio. Attached Figure Description

[0014] Figure 1 It is a 3D diagram of a speed reducer with adjustable gears;

[0015] Figure 2 This is a sectional view of the input shaft of a gear reducer with adjustable gear ratios;

[0016] Figure 3 This is a sectional view of the output shaft of a gear reducer with adjustable gear ratios;

[0017] Figure 4 yes Figure 2 Enlarged view of center circle A;

[0018] The components are as follows: 1. Housing; 11. Inspection port; 12. Positioning groove; 2. Input shaft; 21. Mounting groove; 22. Connecting shaft; 221. Moving part; 23. Worm gear; 24. Worm wheel; 25. Lead screw; 26. Driving wheel; 27. Sliding groove; 271. Positioning hole; 3. Output shaft; 31. Driven wheel one; 32. Driven wheel two; 33. Driven wheel three; 34. Fixed part; 35. Mounting shaft; 36. Connecting rod; 4. Transparent plate; 41. Positioning part; 42. Handle; 43. Connecting column; 431. Oil injection hole; 5. Bolt one; 6. Spiral plug; 7. Sliding sleeve; 71. Fixed hole; 72. Bolt two; 8. Bolt three; 9. Screw. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figures 1 to 4 As shown, this utility model can be implemented through the following embodiments: A speed reducer with adjustable gears includes a housing 1, an input shaft 2 and an output shaft 3 installed inside the housing 1, a maintenance port 11 provided on the housing 1, a transparent plate 4 installed on the maintenance port 11, an installation groove 21 provided on the input shaft 2, a connecting shaft 22 installed in the installation groove 21, a worm gear 23 installed in the connecting shaft 22, the worm gear 23 meshing with a worm wheel 24, the worm wheel 24 connected to a lead screw 25, a moving part 221 provided on the connecting shaft 22, the lead screw 25 passing through the moving part 221, a driving wheel 26 installed on the input shaft 2, and a driven wheel 31, a driven wheel 32 and a driven wheel 33 installed on the output shaft 3.

[0021] The connecting shaft 22 is slidably connected to the input shaft 2. After the worm 23 is rotated, the worm wheel 24 rotates with the worm 23, which in turn causes the lead screw 25 to rotate. The lead screw 25 drives the moving part 221 to move, realizing the sliding of the connecting shaft 22 within the input shaft 2, thereby adjusting the length of the input shaft 2 to meet the installation requirements. The combination of the worm wheel 24 and the worm 23 ensures that when the connecting shaft 22 rotates with the input shaft 2, the worm 23 will not rotate with the worm wheel 24, preventing the rotation of the reducer during operation from affecting the sliding of the connecting shaft 22. The driving wheel 26 is used to mesh with driven wheel one 31, driven wheel two 32, and driven wheel three 33. Driven wheel one 31, driven wheel two 32, and driven wheel three 33 are used to cooperate with the driving wheel 26 to change the reduction ratio. The transparent plate 4 is used to observe problems inside the housing 1, and then the reducer can be inspected and repaired through the inspection port 11.

[0022] like Figure 1 As shown, a positioning part 41 is provided on the transparent plate 4, and a positioning groove 12 is provided on the inspection port 11. A bolt 5 passes through the positioning part 41 and the positioning groove 12. The positioning part 41 and the positioning groove 12 cooperate to facilitate the installation of the transparent plate 4 on the positioning part 41; the bolt 5 fixes the transparent plate 4 and the inspection port 11 by passing through the positioning part 41 and the positioning groove 12.

[0023] like Figure 1As shown, a handle 42 is provided on the transparent plate 4, and a connecting post 43 is provided on the handle 42. An oil filling hole 431 is opened on the connecting post 43, and a spiral plug 6 is opened on the oil filling hole 431. The handle 42 makes it easy for maintenance personnel to open the inspection port 11 by moving the transparent plate 4, thereby improving maintenance efficiency; the oil filling hole 431 is used to fill oil into the reducer without opening the inspection port 11, thereby improving oil filling efficiency and reducing the possibility of impurities mixing into the oil; the spiral plug 6 is used to seal the oil filling hole 431 to prevent impurities from entering the housing 1.

[0024] like Figure 1 and Figure 2 As shown, there are three driving wheels 26. These three driving wheels 26 are used to match driven wheels 1 31, driven wheels 2 32, and driven wheels 33, facilitating the switching of different reduction ratios.

[0025] like Figure 1 and Figure 2 As shown, the driving wheel 26 is fixed on the sliding sleeve 7. The input shaft 2 has a sliding groove 27 with a positioning hole 271. The sliding sleeve 7 has a fixing hole 71 between the driving wheels 26. Bolt 22 passes through the fixing hole 71 and the positioning hole 271. The sliding sleeve 7 drives the driving wheel 26 to slide on the sliding groove 27, thereby allowing different driving wheels 26 to mesh with driven wheels 1 31, 2 32, and 33 to adjust the reduction ratio. The positioning hole 271, fixing hole 71, and bolt 2 72 work together to fix the sliding sleeve 7 to the input shaft 2, preventing the sliding sleeve 7 from sliding freely along the sliding groove 27. When needed, bolt 2 72 can be removed to facilitate the user's adjustment of the reduction ratio.

[0026] like Figure 1 and Figure 3 As shown, driven gear 1 31 has more teeth than driven gear 2 32 and driven gear 33, and driven gear 2 32 has more teeth than driven gear 33. The larger the number of teeth, the greater the reduction ratio. The reduction ratio is the largest when driven gear 1 31 meshes with driving gear 26, followed by driven gear 2 32, and the smallest when driven gear 33 is engaged.

[0027] like Figure 1 and Figure 3 As shown, driven wheel 1 31, driven wheel 2 32, and driven wheel 33 are extended with fixing parts 34, and bolts 3 8 pass through the fixing parts 34 and the output shaft 3. The fixing parts 34 fix driven wheel 1 31, driven wheel 2 32, and driven wheel and output shaft 3 by bolts 3 8, which facilitates the disassembly and replacement of driven wheel 1 31, driven wheel 2 32, and driven wheel 33.

[0028] like Figure 1 and Figure 3As shown, the output shaft 3 has mounting shafts 35 at both ends, and connecting rods 36 are mounted on the mounting shafts 35. Screws 9 pass through the connecting rods 36 and the mounting shafts 35. The mounting shafts 35 and the connecting rods 36 cooperate to facilitate positioning and installation; the screws 9 are used to fix the mounting shafts 35 and the connecting rods 36 together, making it easy for users to replace and remove the mounting shafts 35, thereby adjusting the length of the output shaft 3.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0030] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A speed reducer with adjustable gears, comprising a housing (1), wherein an input shaft (2) and an output shaft (3) are installed within the housing (1), characterized in that: The housing (1) is provided with an inspection port (11), and a transparent plate (4) is installed on the inspection port (11). The input shaft (2) is provided with an installation groove (21), and a connecting shaft (22) is installed in the installation groove (21). A worm gear (23) is installed in the connecting shaft (22), and the worm gear (23) meshes with a worm wheel (24). The worm wheel (24) is connected to a lead screw (25). A moving part (221) is provided on the connecting shaft (22), and the lead screw (25) passes through the moving part (221). A driving wheel (26) is installed on the input shaft (2), and a driven wheel one (31), a driven wheel two (32), and a driven wheel three (33) are installed on the output shaft (3).

2. The speed reducer with adjustable gears according to claim 1, characterized in that, The transparent plate (4) is provided with a positioning part (41), and the inspection port (11) is provided with a positioning groove (12). A bolt (5) passes through the positioning part (41) and the positioning groove (12).

3. The speed reducer with adjustable gears according to claim 1, characterized in that, A handle (42) is provided on the transparent plate (4), a connecting post (43) is provided on the handle (42), an oil injection hole (431) is provided on the connecting post (43), and a spiral plug (6) is provided on the oil injection hole (431).

4. The speed reducer with adjustable gears according to claim 1, characterized in that, The number of drive wheels (26) is 3.

5. The speed reducer with adjustable gears according to claim 1, characterized in that, The drive wheel (26) is fixed on the sliding sleeve (7). The input shaft (2) has a sliding groove (27) and a positioning hole (271) on the sliding groove (27). The sliding sleeve (7) has a fixing hole (71) between the drive wheel (26). The fixing hole (71) and the positioning hole (271) are connected by two bolts (72).

6. The speed reducer with adjustable gears according to claim 1, characterized in that, The number of teeth of the driven wheel one (31) is greater than that of the driven wheel two (32) and the driven wheel three (33), and the number of teeth of the driven wheel two (32) is greater than that of the driven wheel three (33).

7. The speed reducer with adjustable gears according to claim 1, characterized in that, The driven wheel one (31), driven wheel two (32) and driven wheel three (33) have a fixed part (34) extending from them, and the fixed part (34) and the output shaft (3) are connected by bolt three (8).

8. A speed reducer with adjustable gears according to claim 1, characterized in that, The output shaft (3) is provided with mounting shafts (35) at both ends, and a connecting rod (36) is mounted on the mounting shaft (35). Screws (9) pass through the connecting rod (36) and the mounting shaft (35).

Images