Manual speed regulation speed reducer
The manual speed reducer with three shafts and three pairs of gears solves the problem of limited speed and torque at the input end of the fatigue test bench, realizes flexible speed and torque adjustment, and improves the applicability of the test bench.
Patent Information
- Application Number
- CN202521412698.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-07-07
AI Technical Summary
The input speed and torque of the assembly fatigue test bench are limited and cannot meet the test requirements.
The manual speed reducer uses a three-axis and three pairs of gears to transmit power, and the speed and torque can be adjusted by shifting gears to achieve flexible adjustment at the input end.
With the motor speed and torque remaining constant, the applicability of the assembly fatigue test bench has been improved, meeting the testing requirements.
Smart Images
Figure CN223964852U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a manual speed-adjusting reducer, which is used to adjust the speed and torque at the input end of an assembly fatigue test bench, and belongs to the technical field of transmission equipment. Background Technology
[0002] Fatigue testing benches, due to their motor input, have limitations in torque and speed; either the speed or torque may not meet the test requirements. By adding a speed reducer between the motor and the test piece without altering the bench's components, the problem of the bench itself failing to meet test requirements can be solved by adjusting the speed and torque. Utility Model Content
[0003] The purpose of this invention is to develop a manual speed-regulating reducer that uses three shafts and three pairs of gears to transmit power. While the motor speed and torque on the test bench remain constant, the speed and torque at the input end can be adjusted by shifting gears, thereby improving the applicability of the test bench.
[0004] The technical solution of this utility model is:
[0005] A manual speed-adjustable reducer includes an input plate, an input shaft, an intermediate shaft, an output shaft, a shift positioning pin, a high-speed wheel, a low-speed wheel, a shifting mechanism, an output plate, a connecting sleeve, and a reducer housing. The input shaft, intermediate shaft, and output shaft, housed within the reducer housing, are meshed by gears fixed to their respective shafts. The input plate is fixed to the input shaft, and the output plate is fixed to the output shaft. The high-speed wheel, low-speed wheel, and connecting sleeve are respectively mounted on the output shaft, with the connecting sleeve located between the high-speed wheel and the low-speed wheel. The shifting mechanism includes a shift fork, a shift shaft, and a shift handle. One end of the shift fork is connected to the connecting sleeve, and the other end is connected to the shift shaft. One end of the shift shaft has a shift handle located outside the reducer housing, and the other end has a shift positioning pin.
[0006] Furthermore, the high-speed wheel and the low-speed wheel are rotatably connected to the output shaft via needle roller bearings.
[0007] Furthermore, the high-speed wheel and the low-speed wheel are connected to the connecting sleeve and the connecting sleeve is connected to the output shaft via internal and external splines, respectively.
[0008] Furthermore, the shift positioning pin is threaded onto the reducer housing.
[0009] The beneficial effects of this utility model are: by using three shafts and three pairs of gears to transmit power, the speed and torque at the input end can be adjusted by shifting gears while the motor speed and torque of the test bench remain constant, thereby improving the applicability of the test bench and solving the problem that the test bench itself cannot meet the test requirements. Attached Figure Description
[0010] Figure 1 This is a cross-sectional view of the present invention;
[0011] In the diagram: 1. Input plate 2. Input shaft 3. Intermediate shaft 4. Output shaft 5. Shift positioning pin 6. High-speed wheel 7. Low-speed wheel 8. Shift mechanism 9. Output plate 10. Connecting sleeve 11. Shift fork 12. Shift shaft 13. Shift handle 14. Gearbox housing Detailed Implementation
[0012] The present invention will be further described below with reference to the accompanying drawings and examples.
[0013] See attached document Figure 1 A manual speed-adjustable reducer includes an input plate 1, an input shaft 2, an intermediate shaft 3, an output shaft 4, a shift positioning pin 5, a high-speed wheel 6, a low-speed wheel 7, a shifting mechanism 8, an output plate 9, a connecting sleeve 10, and a reducer housing 14. The input shaft 2, intermediate shaft 3, and output shaft 4, housed within the reducer housing 14, are meshed by gears fixed to their respective shafts. The input plate 1 is fixed to the input shaft 2, and the output plate 9 is fixed to the output shaft 4. The high-speed wheel 6, low-speed wheel 7, and connecting sleeve 10 are respectively disposed on the output shaft 4, with the connecting sleeve 10 located between the high-speed wheel 6 and the low-speed wheel 7. The shifting mechanism 8 includes a shift fork 11, a shift shaft 12, and a shift handle 13. One end of the shift fork 11 is connected to the connecting sleeve 10, and the other end is connected to the shift shaft 12. One end of the shift shaft 12 has a shift handle 13 located outside the reducer housing 14, and the other end has a shift positioning pin 5.
[0014] In this embodiment, the reducer housing 14 is made of welded steel plate. The input connector 1 is fixed on the input shaft 2, and the output connector 9 is fixed on the output shaft 4. The input and output are not on the same power line. The power is transmitted between the input shaft 2, the intermediate shaft 3, and the output shaft 4 through three pairs of gears.
[0015] The input end of the test bench is connected to the reducer via input connector 1. The power transmission path passes through input connector 1, input shaft 2, intermediate shaft 3, high-speed wheel 6 or low-speed wheel 7, connecting sleeve 10, output shaft 4, and output connector 9. The input end of the test piece is connected to the reducer via output connector 9.
[0016] The high-speed wheel 6 and the low-speed wheel 7 are mounted on the output shaft 4. A needle roller bearing is installed at the mating point, so in neutral, the output shaft 4 can rotate independently of the high-speed wheel 6 and the low-speed wheel 7 without affecting each other.
[0017] To reduce speed and increase torque, loosen the shift positioning pin 5 and move the shift mechanism 8 backward to move the connecting sleeve 10 backward. The connecting sleeve 10 is connected to the output shaft 4 and the low-speed wheel 7 via inner and outer splines, respectively. At this time, the output shaft 4, the connecting sleeve 10, and the low-speed wheel 7 are equivalent to a whole. The power is transmitted to the input receiving plate 1 through the test bench. The input receiving plate 1 is rigidly connected to the input shaft 2 via splines. Then, the power is transmitted to the intermediate shaft 3 through the input shaft 2, and then to the connecting sleeve 10 through the low-speed wheel 7, and then to the output shaft 4. The output receiving plate 9 is rigidly connected to the output shaft 4. The power is transmitted to the test piece through the output receiving plate 9. Finally, tighten the shift positioning pin 5 to ensure that the connecting sleeve 10 works stably and continuously between the output shaft 4 and the low-speed wheel 7.
[0018] To reduce torque and increase speed, loosen the shift positioning pin 5 and move the shift mechanism 8 forward to move the connecting sleeve 10 forward as well. The connecting sleeve 10 is connected to the output shaft 4 and the high-speed wheel 6 via inner and outer splines, respectively. At this time, the output shaft 4, the connecting sleeve 10, and the high-speed wheel 6 are equivalent to a whole. The power is transmitted to the input receiving plate 1 through the test bench. The input receiving plate 1 is rigidly connected to the input shaft 2 via splines. Then, the power is transmitted to the intermediate shaft 3 through the input shaft 2, and then to the connecting sleeve 10 through the high-speed wheel 6, and then to the output shaft 4. The output receiving plate 9 is rigidly connected to the output shaft 4. The power is transmitted to the test piece through the output receiving plate 9. Finally, tighten the shift positioning pin 5 to ensure that the connecting sleeve 10 works stably and continuously between the output shaft 4 and the high-speed wheel 6.
Claims
1. A manually speed-adjustable speed reducer characterized by: The application relates to a speed reducer, which comprises an input flange (1), an input shaft (2), an intermediate shaft (3), an output shaft (4), a shift positioning pin (5), a high-speed wheel (6), a low-speed wheel (7), a shift mechanism (8), an output flange (9), a connecting sleeve (10) and a speed reducer box body (14), the input shaft (2), the intermediate shaft (3) and the output shaft (4) are arranged in the speed reducer box body (14) and are connected through gears fixed on the shafts, the input flange (1) is fixed on the input shaft (2), the output flange (9) is fixed on the output shaft (4), the high-speed wheel (6), the low-speed wheel (7) and the connecting sleeve (10) are arranged on the output shaft (4) respectively, the connecting sleeve (10) is located between the high-speed wheel (6) and the low-speed wheel (7), the shift mechanism (8) comprises a shift fork (11), a shift shaft (12) and a shift handle (13), one end of the shift fork (11) is connected to the connecting sleeve (10), the other end of the shift fork (11) is connected to the shift shaft (12), one end of the shift shaft (12) is provided with the shift handle (13) and is located outside the speed reducer box body (14), and the other end of the shift shaft (12) is provided with the shift positioning pin (5).
2. A manually speed-adjustable speed reducer according to claim 1, characterized in that: The high-speed wheel (6) and the low-speed wheel (7) are rotatably connected to the output shaft (4) through needle bearings respectively.
3. A manually speed-adjustable speed reducer according to claim 1 or 2, characterized in that: The high-speed wheel (6) and the low-speed wheel (7) are connected with the connecting sleeve (10) and the connecting sleeve (10) is connected with the output shaft (4) through inner and outer splines respectively.
4. A manually speed-adjustable speed reducer according to claim 1 or 2, characterized in that: The shift positioning pin (5) is screw-connected to the speed reducer box body (14).