Automatic uniform-load high-speed double-split gearbox
By filling lubricating oil in the high-speed dual-splitting gearbox and combining the sealing structure, the problem of internal heating of the gearbox during high-speed rotation is solved, the bearing life is extended and the pressure is avoided and oil leakage is avoided, thus achieving higher reliability of use.
Patent Information
- Application Number
- CN202421512619.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-28
AI Technical Summary
During high-speed rotation, the heating problem inside the gearbox affects the service life of the sliding bearing and leads to excessive pressure and oil leakage.
An automatic uniform load high-speed double-splitting gear box is designed to remove friction heat by filling the gear box with lubricating oil, and the pressure balance between the box and the outside world is maintained through the breathable cap, combining low-speed seals and high-speed seals to avoid oil leakage.
It effectively reduces the temperature inside the gearbox, extends the service life of the sliding bearing, avoids excessive pressure and oil leakage, and improves the reliability of the gearbox.
Smart Images
Figure CN222782991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gear boxes, in particular to an automatic load-sharing high-speed double-dividing gear box. Background Art
[0002] The double-shunt gearbox adopts a double-shunt structure due to the special installation method of the aviation test bench. The test bench requires that the two output shafts are in the same straight line and must meet the use conditions of high speed and high torque. In order to meet the requirements of frequent startup of the aviation test bench, all bearings are sliding bearings. However, during the use of the gearbox, the transmission shaft inside the gearbox rotates at high speed, which will cause heating inside the gearbox, affecting the service life of the sliding bearing. At the same time, it will also cause excessive pressure and oil leakage inside the gearbox. Therefore, we propose an automatic load-sharing high-speed shunt gearbox to solve the above problems. Utility Model Content
[0003] The main purpose of the utility model is to provide an automatic load-balancing high-speed double-dividing gearbox, which solves the problem of heating inside the gearbox when the transmission shaft inside the gearbox rotates at high speed during use, thereby affecting the service life of the sliding bearing and causing excessive pressure and oil leakage inside the gearbox.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] An automatic load-balancing high-speed double-split gearbox comprises a box body, a low-speed shaft is movably installed through the front end of the box body, driven wheels are movably installed through the two sides of the front end of the box body, the driven wheels are meshingly connected with the low-speed shaft, a spline shaft is installed through the inside of the driven wheel, high-speed gears are movably installed at both ends of the rear side of the box body, the spline shafts are respectively connected to the high-speed gears, a high-speed shaft is movably installed through the rear end of the box body, one end of the high-speed shaft located inside the box body is meshingly connected with the high-speed gear, and a diaphragm coupling is installed at the end of the high-speed shaft away from the high-speed gear.
[0006] Preferably, a thrust sliding bearing and a third sliding bearing are respectively installed on the outer side of the rod body of the low-speed shaft at the front and rear ends inside the housing, the thrust sliding bearing and the third sliding bearing are installed inside the housing, and a low-speed seal is installed between the low-speed shaft and the housing.
[0007] Preferably, first sliding bearings are respectively installed at the front and rear ends of the driven wheel, and the first sliding bearings are respectively installed inside the box body, and the spline shaft is meshingly connected with the driven wheel.
[0008] Preferably, second sliding bearings are respectively installed at the front and rear ends of the high-grade large gear, and the second sliding bearings are respectively installed inside the box body, and one end of the spline shaft away from the thrust sliding bearing is connected to the high-grade large gear.
[0009] Preferably, the front and rear ends of the high-speed shaft located inside the housing are respectively installed with tilting pad bearings, the tilting pad bearings are respectively installed inside the housing, a high-speed seal is installed between the high-speed shaft and the housing, a high-speed shaft thrust bearing is installed on the outer side of one end of the high-speed shaft close to the third sliding bearing, the high-speed shaft thrust bearing is installed inside the housing, and vibration measuring probes are respectively installed on one end of the driven wheel, high-speed gear, low-speed shaft and high-speed shaft close to each other.
[0010] Preferably, an oil inlet pipe and an oil outlet pipe are respectively installed through one side of the box body, a breathable cap is installed at the upper end of the box body, visual observation windows are respectively provided at both ends of the upper surface of the box body, and a pressure gauge and a temperature gauge are respectively installed at the upper end of the oil inlet pipe.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] (1) In the utility model, the lubricating oil enters the interior of the box through the oil inlet pipe, fills the interior of the box, and allows all components in the box to be soaked in the lubricating oil. When the gear box is in use, the lubricating oil can take away the friction heat in the gear box, ensuring that the gear box always maintains a specified temperature. Then, the air cap is used to maintain the pressure balance between the box and the outside world, and the low-speed seal and the high-speed seal are used to avoid oil leakage in the box, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front view structural schematic diagram of an automatic load-sharing high-speed double-dividing gearbox of the utility model;
[0014] Figure 2 It is a side view structural schematic diagram of an automatic load-sharing high-speed double-dividing gearbox of the utility model;
[0015] Figure 3 The utility model is a schematic diagram of the internal structure of an automatic load-sharing high-speed double-dividing gearbox in a top view.
[0016] In the figure: 1. low-speed shaft; 2. low-speed seal; 3. thrust sliding bearing; 4. spline shaft; 5. first sliding bearing; 6. driven wheel; 7. second sliding bearing; 8. high-grade large gear; 9. housing; 10. high-speed shaft; 11. tilting pad bearing; 12. high-speed seal; 13. diaphragm coupling; 14. high-speed shaft thrust bearing; 15. third sliding bearing; 16. vibration measuring probe; 17. oil inlet pipe; 18. oil outlet pipe; 19. breather cap; 20. visual observation window; 21. pressure gauge; 22. temperature gauge. DETAILED DESCRIPTION
[0017] The following will be combined with 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 of 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.
[0018] like Figures 1 to 3 As shown, an embodiment of the utility model proposes an automatic load-balancing high-speed double-dividing gearbox, including a box body 9, a low-speed shaft 1 is movably installed through the internal front end of the box body 9, driven wheels 6 are movably installed on both sides of the internal front end of the box body 9, the driven wheel 6 and the low-speed shaft 1 are meshingly connected, a spline shaft 4 is installed through the inside of the driven wheel 6, high-speed large gears 8 are movably installed at both ends of the rear side of the box body 9, the spline shafts 4 are respectively connected to the high-speed large gears 8, a high-speed shaft 10 is movably installed at the internal rear end of the box body 9, one end of the high-speed shaft 10 located inside the box body 9 is meshingly connected to the high-speed large gear 8, and a diaphragm coupling 13 is installed at the end of the high-speed shaft 10 away from the high-speed large gear 8.
[0019] like Figures 1 to 3As shown, in another embodiment of the utility model, the low-speed shaft 1 is located inside the box body 9, and the outer sides of the rod body at the front and rear ends are respectively installed with a thrust sliding bearing 3 and a third sliding bearing 15, the thrust sliding bearing 3 and the third sliding bearing 15 are installed inside the box body 9, a low-speed seal 2 is installed between the low-speed shaft 1 and the box body 9, the front and rear ends of the driven wheel 6 are respectively installed with a first sliding bearing 5, the first sliding bearing 5 is respectively installed inside the box body 9, the spline shaft 4 is meshed with the driven wheel 6, the front and rear ends of the high-speed gear 8 are respectively installed with a second sliding bearing 7, the second sliding bearing 7 is respectively installed inside the box body 9, the end of the spline shaft 4 away from the thrust sliding bearing 3 is connected to the high-speed gear 8, and the high-speed shaft 10 is located in the box body. Tilting pad bearings 11 are installed at the front and rear ends of the body 9 respectively, and the tilting pad bearings 11 are installed inside the box body 9 respectively. A high-speed seal 12 is installed between the high-speed shaft 10 and the box body 9. A high-speed shaft thrust bearing 14 is installed on the outer side of the end of the high-speed shaft 10 close to the third sliding bearing 15, and the high-speed shaft thrust bearing 14 is installed inside the box body 9. Vibration measuring probes 16 are installed at one end of the driven wheel 6, the high-grade large gear 8, the low-speed shaft 1, and the high-speed shaft 10 that are close to each other. An oil inlet pipe 17 and an oil outlet pipe 18 are respectively installed through one side of the box body 9, a breathable cap 19 is installed on the upper end of the box body 9, and visual observation windows 20 are respectively provided at both ends of the upper surface of the box body 9. A pressure gauge 21 and a temperature gauge 22 are respectively installed on the upper end of the oil inlet pipe 17.
[0020] The lubricating oil enters the interior of the box 9 along the oil inlet pipe 17 to fill the interior of the box 9. After the lubricating oil is injected, the external transmission device can drive the low-speed shaft 1 to rotate, so that the low-speed shaft 1 drives the driven wheel 6 to rotate, and then the driven wheel 6 can drive the high-speed gear 8 to rotate through the spline shaft 4, and then the high-speed gear 8 can drive the high-speed shaft 10 to rotate, so that the high-speed shaft 10 can test the test piece through the diaphragm coupling 13;
[0021] The thrust sliding bearing 3 and the high-speed shaft thrust bearing 14 have the advantages of reducing volume, compressing space and weight. Together with the first sliding bearing 5, the second sliding bearing 7 and the third sliding bearing 15, the gearbox can be made smaller and more precise, and more oil circuits and electronic control system sensors can be arranged, which is very beneficial to the design of the gearbox;
[0022] The tilting pad bearing 11 is a sliding bearing whose bearing pad can swing freely to adapt to the running state of the high-speed shaft 10, so as to better bear the axial load. In the gearbox, the tilting pad bearing 11 can effectively reduce the vibration and noise of the gearbox and improve the running stability and reliability of the gearbox;
[0023] The vibration measuring probe 16 is used to measure the vibration acceleration, speed and displacement of the driven wheel 6, the high-speed gear 8, the low-speed shaft 1 and the high-speed shaft 10 during operation, so that the user can judge the operating status and fault conditions in the gearbox according to the data;
[0024] The user can observe the interior of the box 9 through the visual observation window 20, so as to facilitate the auxiliary data to determine whether the various components inside the box 9 are in a normal state;
[0025] The lubricating oil enters the box body 9 along the oil inlet pipe 17, and then is discharged along the oil outlet pipe 18 after the gearbox is finished working. Then the air cap 19 is used to keep the pressure of the box body 9 consistent with that of the outside world, so as to avoid excessive pressure inside the box body 9;
[0026] The low-speed seal 2 and the high-speed seal 12 are sealed in a mechanical rotating labyrinth manner, so as to better seal the low-speed shaft 1, the high-speed shaft 10 and the housing 9 and avoid oil leakage.
[0027] The working principle of an automatic load-sharing high-speed double-dividing gearbox:
[0028] When in use, the lubricating oil first enters the interior of the box 9 along the oil inlet pipe 17 to fill the interior of the box 9. Then, after the lubricating oil is injected, the external transmission device can drive the low-speed shaft 1 to rotate, so that the low-speed shaft 1 drives the driven wheel 6 to rotate, and then the driven wheel 6 can drive the high-speed gear 8 to rotate through the spline shaft 4, and then the high-speed gear 8 can drive the high-speed shaft 10 to rotate, so that the high-speed shaft 10 can test the test piece through the diaphragm coupling 13.
[0029] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.
Claims
1. An automatic load-balancing high-speed double-dividing gearbox, comprising a housing (9), characterized in that: A low-speed shaft (1) is movably installed through the front end of the box body (9), and driven wheels (6) are movably installed on both sides of the front end of the box body (9), and the driven wheel (6) and the low-speed shaft (1) are meshingly connected. A spline shaft (4) is installed through the interior of the driven wheel (6), and a high-speed gear (8) is movably installed at both ends of the rear side of the box body (9), and the spline shaft (4) is respectively connected to the high-speed gear (8). A high-speed shaft (10) is movably installed through the rear end of the box body (9), and one end of the high-speed shaft (10) located inside the box body (9) is meshingly connected to the high-speed gear (8), and a diaphragm coupling (13) is installed at the end of the high-speed shaft (10) away from the high-speed gear (8).
2. The automatic load-sharing high-speed double-dividing gearbox according to claim 1, characterized in that: The low-speed shaft (1) is located inside the housing (9), and thrust sliding bearings (3) and third sliding bearings (15) are respectively installed on the outer sides of the rod body at the front and rear ends thereof. The thrust sliding bearings (3) and the third sliding bearings (15) are installed inside the housing (9), and a low-speed seal (2) is installed between the low-speed shaft (1) and the housing (9).
3. The automatic load-sharing high-speed double-dividing gearbox according to claim 1, characterized in that: The front and rear ends of the driven wheel (6) are respectively provided with first sliding bearings (5), and the first sliding bearings (5) are respectively installed inside the box body (9). The spline shaft (4) is meshingly connected with the driven wheel (6).
4. The automatic load-sharing high-speed double-dividing gearbox according to claim 1, characterized in that: Second sliding bearings (7) are respectively installed at the front and rear ends of the high-grade large gear (8), and the second sliding bearings (7) are respectively installed inside the box (9), and the end of the spline shaft (4) away from the thrust sliding bearing (3) is connected to the high-grade large gear (8).
5. The automatic load-sharing high-speed double-dividing gearbox according to claim 1, characterized in that: The high-speed shaft (10) is located inside the housing (9) and has tilting pad bearings (11) installed at both ends thereof. The tilting pad bearings (11) are installed inside the housing (9). A high-speed seal (12) is installed between the high-speed shaft (10) and the housing (9). A high-speed shaft thrust bearing (14) is installed on the outer side of one end of the high-speed shaft (10) close to the third sliding bearing (15). The high-speed shaft thrust bearing (14) is installed inside the housing (9). Vibration probes (16) are installed at one end of the driven wheel (6), the high-speed gear (8), the low-speed shaft (1), and the high-speed shaft (10) close to each other.
6. The automatic load-sharing high-speed double-dividing gearbox according to claim 1, characterized in that: An oil inlet pipe (17) and an oil outlet pipe (18) are respectively installed through one side of the box body (9), a breathable cap (19) is installed at the upper end of the box body (9), visual observation windows (20) are respectively provided at both ends of the upper surface of the box body (9), and a pressure gauge (21) and a temperature gauge (22) are respectively installed at the upper end of the oil inlet pipe (17).