Speed reducer for saw blade cutting machine
By adopting the combined structure of mechanical seal and maze seal and the floating function of cylindrical roller bearings in the reducer for saw blade cutting machines, the problems of oil leakage in the aging of oil seals and the reduction of bearing life are solved, achieving higher load-bearing capacity and lower maintenance costs.
Patent Information
- Application Number
- CN202421682265.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-16
AI Technical Summary
When cutting steel, the reducer for saw blade cutting machines has problems such as oil seal aging, oil leakage, iron chip cutting oil seal and bearing life reduction, resulting in high maintenance costs and inconvenient use.
The combination structure of mechanical seal and maze seal is adopted to prevent oil leakage and iron filings from entering through oil barrier ring, permeable cover, oil swing ring and maze dynamic ring. Combined with the floating function of cylindrical roller bearings, the load bearing capacity is improved, and lubrication and oil return are achieved through the oil inlet groove and oil return hole of the box.
Effectively prevent oil leakage and iron filings from entering, reduce maintenance costs, improve the load-bearing capacity and usage performance of the reducer, reduce bearing temperature rise and vibration, and ensure stable operation of the production line.
Smart Images
Figure CN222668849U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of speed reducers, in particular to a speed reducer for a saw blade cutting machine. Background Art
[0002] The reducer plays the role of matching the speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery. For example, a reducer is needed on a saw blade cutting machine.
[0003] However, the saw blade cutting machine has the following defects when cutting steel:
[0004] 1. The reducer for the saw blade cutting machine is sealed with an oil seal. Due to the high speed of the input and output shafts, the friction with the oil seal is aggravated, and the temperature of the oil seal increases, making the oil seal prone to aging and oil leakage. In addition, the iron filings generated by the saw blade cutting machine during cutting will cut the oil seal and make it invalid. The oil seal needs to be replaced frequently during use, and the maintenance cost is high. Conventional designs no longer meet the use environment.
[0005] 2. The output shaft of the reducer equipped with the saw blade needs to withstand huge radial force and large vibration, which generates a lot of heat during use, resulting in a reduced service life of the bearings on the shaft and easy damage. Utility Model Content
[0006] In view of the above problems existing in the reducer for the existing saw blade cutting machine, the present utility model is proposed.
[0007] Therefore, the purpose of the utility model is to provide a reducer for a saw blade cutting machine, which solves the problems raised by the background technology.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A speed reducer for a saw blade cutting machine, comprising a housing, an input shaft, an output shaft, an input bevel gear and an output bevel gear, wherein the input shaft and the output shaft are both arranged inside the housing, the input shaft and the housing, and the end of the output shaft away from the shaft head and the housing are both rotatably connected via tapered roller bearings, the end of the output shaft close to the shaft head and the housing are rotatably connected via cylindrical roller bearings, the input bevel gear is fixedly mounted on the shaft wall of the input shaft, the output bevel gear is fixedly mounted on the shaft wall of the output shaft, and the input bevel gear and the output bevel gear are meshed; the output A sealing mechanism is provided between the shaft and the housing, and the sealing mechanism includes an oil deflector ring, a transparent cover, an oil slinger ring and a labyrinth moving ring. The oil deflector ring is arranged on the inner wall of the housing, the transparent cover and the oil slinger ring are both arranged on the outside of the oil deflector ring, and the oil slinger ring is arranged on the inside of the transparent cover, the labyrinth moving ring is arranged on the outside of the transparent cover and the oil slinger ring, a plurality of grooves are provided on the labyrinth moving ring and the transparent cover, and the upper and lower grooves form a labyrinth groove, and the shaft wall of the output shaft passes through the inside of the oil deflector ring, the inside of the oil slinger ring and the inside of the labyrinth moving ring; the arrangement between the input shaft and the housing is the same as the arrangement between the output shaft and the housing.
[0010] Preferably, the oil deflector ring is designed to be stepped, and the outer ring is heightened, and a gap of millimeters is left on one side between the oil deflector ring and the outer ring of the output shaft.
[0011] Preferably, the oil slinger ring and the output shaft, as well as the labyrinth movable ring and the output shaft are connected by interference fit.
[0012] Preferably, a first oil return chamber is formed between the oil retaining ring and the cylindrical roller bearing, a second oil return chamber is formed between the oil retaining ring and the transparent cover, the side wall of the housing is provided with a housing oil inlet groove, the side wall of the oil retaining ring is provided with an oil retaining ring oil inlet groove connected to the housing oil inlet groove, and the oil retaining ring is located on the inner side of the first oil return chamber and is provided with an oil return hole connected to the oil retaining ring oil inlet groove.
[0013] Furthermore, a water-spraying tray is fixedly provided on the shaft wall of the output shaft and outside the box body.
[0014] Preferably, temperature vibration sensors are installed on the outer wall of the box body and at positions corresponding to the positions of the tapered roller bearing and the cylindrical roller bearing.
[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0016] The utility model adopts a mechanical seal and a labyrinth seal combined structure through the oil retaining ring, the transparent cover, the oil throwing ring and the labyrinth dynamic ring to prevent oil leakage and the entry of iron filings and dust, and is maintenance-free. At the same time, the iron filings will not cut the oil seal, thereby reducing the maintenance cost.
[0017] The utility model has a cylindrical roller bearing, when the output shaft is subjected to a large impact, the floating function of the cylindrical roller bearing itself protects the roller inside the cylindrical roller bearing from the impact, thereby greatly improving the load-bearing capacity of the reducer.
[0018] The utility model can spray oil and lubricate the cylindrical roller bearing separately through the box oil inlet groove, the oil retaining ring oil inlet groove and the oil return hole, and the first oil return chamber and the second oil return chamber can quickly lubricate and cool and return oil in time.
[0019] The utility model can monitor the temperature rise and vibration of the bearing in real time by arranging temperature vibration sensors on the outside of the box body, and each temperature vibration sensor is installed corresponding to each bearing, so as to feed back electrical signals, thereby facilitating early detection of abnormalities, timely processing and preventing paralysis of the production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0021] Figure 1 It is a schematic diagram of the internal structure of the utility model;
[0022] Figure 2 For the utility model Figure 1 A magnified schematic diagram of part A;
[0023] Figure 3 It is a schematic diagram of the external structure of the utility model.
[0024] Description of reference numerals:
[0025] 1. Housing; 2. Input shaft; 3. Output shaft; 4. Input bevel gear; 5. Output bevel gear; 6. Tapered roller bearing; 7. Cylindrical roller bearing; 8. Oil deflector; 9. Transparent cover; 10. Oil slinger; 11. Labyrinth moving ring; 12. Housing oil inlet groove; 13. Oil deflector oil inlet groove; 14. Oil return hole; 15. Water slinger tray; 16. Temperature vibration sensor. DETAILED DESCRIPTION
[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0027] The utility model embodiment discloses a reducer for a saw blade cutting machine.
[0028] The utility model provides Figure 1-2The reducer for a saw blade cutting machine shown in the figure comprises a housing 1, an input shaft 2, an output shaft 3, an input bevel gear 4 and an output bevel gear 5. The input shaft 2 and the output shaft 3 are both arranged inside the housing 1. The input shaft 2 and the housing 1 as well as the end of the output shaft 3 away from the shaft head and the housing 1 are rotatably connected through a tapered roller bearing 6. The tapered roller bearing 6 at the end of the output shaft 3 away from the shaft head has a sleeve on the outside, and an oil groove is provided on the sleeve. The oil grooves of the two are independent but connected, and are connected to the oil groove inside the housing 1 by an oil pipe, so that the bearings can be lubricated, because it already exists in the current technology and is not the main technology of this utility model The output shaft 3 is rotatably connected to the housing 1 at one end near the shaft head through a cylindrical roller bearing 7, the input bevel gear 4 is fixedly mounted on the shaft wall of the input shaft 2, the output bevel gear 5 is fixedly mounted on the shaft wall of the output shaft 3, the input bevel gear 4 and the output bevel gear 5 are meshed, and when the input shaft 2 rotates, the output shaft 3 is driven to rotate through the cooperation of the input bevel gear 4 and the output bevel gear 5. When the input shaft 2 and the output shaft 3 are rotating, and when the output shaft 3 is subjected to a large impact, the floating function of the cylindrical roller bearing 7 itself protects the internal rollers from impact, thereby greatly improving the load-bearing capacity of the reducer.A sealing mechanism is provided between the output shaft 3 and the housing 1, and the sealing mechanism includes an oil baffle ring 8, a transparent cover 9, an oil slinger ring 10 and a labyrinth ring 11. The oil baffle ring 8 is arranged on the inner wall of the housing 1, the transparent cover 9 and the oil slinger ring 10 are both arranged outside the oil baffle ring 8, and the oil slinger ring 10 is arranged inside the transparent cover 9, and the labyrinth ring 11 is arranged outside the transparent cover 9 and the oil slinger ring 10. Multiple grooves are provided on the labyrinth ring 11 and the transparent cover 9, and the upper and lower grooves form a labyrinth groove. The shaft wall of 3 passes through the inside of the oil retaining ring 8, the inside of the oil slinging ring 10 and the inside of the labyrinth moving ring 11. The oil retaining ring 8 is designed to be stepped, and the outer ring is heightened. A 1 mm gap is left on one side between the oil retaining ring 8 and the outer ring of the output shaft 3. The first oil return chamber is formed between the oil retaining ring 8 and the cylindrical roller bearing 7, which does not affect the assembly and can block most of the lubricating oil in the first oil return chamber; it rotates with the output shaft 3, and the labyrinth groove forms an oil film to prevent iron filings and dust from entering the interior of the box body 1; A second oil return chamber is formed between the oil retaining ring 8 and the transparent cover 9, a housing oil inlet groove 12 is provided on the side wall of the housing 1, an oil retaining ring oil inlet groove 13 is provided on the side wall of the housing 1 and is connected to the housing oil inlet groove 12, an oil retaining ring 8 is located on the inner side of the first oil return chamber and is provided with an oil return hole 14 connected to the oil retaining ring oil inlet groove 13, an interference fit is adopted between the oil slingering ring 10 and the output shaft 3, and between the labyrinth moving ring 11 and the output shaft 3, a serrated fit is adopted, a serrated groove is provided on the oil slingering ring 10, the lubricating oil flowing out of the first oil return chamber along the outer diameter of the output shaft 3 is rotated and thrown into the second oil return chamber under the action of centrifugal force; the arrangement between the input shaft 2 and the housing 1 is the same as the arrangement between the output shaft 3 and the housing 1; the combined structure of mechanical seal and labyrinth seal in this process can prevent the leakage of internal lubricating oil and the entry of iron filings to cause damage to the internal parts of the reducer, and the multiple sealing protections can not only improve the performance of the reducer, but also avoid maintenance, saving the later maintenance cost.
[0029] like Figure 1 As shown, a water-spraying tray 15 is fixedly provided on the shaft wall of the output shaft 3 and outside the housing 1. The water-spraying tray 15 rotates to throw out the coolant used in cutting to prevent splashing into the reducer and causing rust on parts.
[0030] like Figure 1 and 3 As shown, temperature vibration sensors 16 are installed on the outer wall of the box body 1 and at positions corresponding to the positions of the tapered roller bearing 6 and the cylindrical roller bearing 7. They can monitor the temperature rise and vibration of the bearings in real time and feed back electrical signals to facilitate early detection of abnormalities and timely processing to prevent paralysis of the production line.
[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A speed reducer for a saw blade cutting machine, comprising a housing (1), an input shaft (2), an output shaft (3), an input bevel gear (4) and an output bevel gear (5), characterized in that: The input shaft (2) and the output shaft (3) are both arranged inside the housing (1); the input shaft (2) and the housing (1) and the end of the output shaft (3) away from the shaft head and the housing (1) are both rotatably connected via a tapered roller bearing (6); the end of the output shaft (3) close to the shaft head and the housing (1) are rotatably connected via a cylindrical roller bearing (7); the input bevel gear (4) is fixedly mounted on the shaft wall of the input shaft (2); the output bevel gear (5) is fixedly mounted on the shaft wall of the output shaft (3); and the input bevel gear (4) and the output bevel gear (5) are meshingly arranged; A sealing mechanism is provided between the output shaft (3) and the housing (1), the sealing mechanism comprising an oil baffle ring (8), a transparent cover (9), an oil slinger ring (10) and a labyrinth moving ring (11); the oil baffle ring (8) is arranged on the inner wall of the housing (1); the transparent cover (9) and the oil slinger ring (10) are both arranged outside the oil baffle ring (8), and the oil slinger ring (10) is arranged inside the transparent cover (9); the labyrinth moving ring (11) is arranged outside the transparent cover (9) and the oil slinger ring (10); a plurality of grooves are provided on the labyrinth moving ring (11) and the transparent cover (9), and the upper and lower grooves form a labyrinth groove; the shaft wall of the output shaft (3) passes through the interior of the oil baffle ring (8), the interior of the oil slinger ring (10) and the interior of the labyrinth moving ring (11); The arrangement between the input shaft (2) and the housing (1) is the same as the arrangement between the output shaft (3) and the housing (1).
2. The reducer for saw blade cutting machine according to claim 1, characterized in that: The oil deflector ring (8) is designed to be stepped, and the outer ring is raised, and a gap of 1 mm is left on one side between the oil deflector ring (8) and the outer ring of the output shaft (3).
3. The reducer for a saw blade cutting machine according to claim 1, characterized in that: The oil slinger ring (10) and the output shaft (3) as well as the labyrinth moving ring (11) and the output shaft (3) are both connected by interference fit.
4. The reducer for a saw blade cutting machine according to claim 1, characterized in that: A first oil return chamber is formed between the oil slinger (8) and the cylindrical roller bearing (7), a second oil return chamber is formed between the oil slinger (8) and the transparent cover (9), a side wall of the housing (1) is provided with a housing oil inlet groove (12), a side wall of the oil slinger (8) is provided with an oil slinger oil inlet groove (13) connected to the housing oil inlet groove (12), and an oil return hole (14) connected to the oil slinger oil inlet groove (13) is provided on the inner side of the oil slinger (8) located in the first oil return chamber.
5. The reducer for saw blade cutting machine according to claim 1, characterized in that: A water-spraying tray (15) is fixedly provided on the shaft wall of the output shaft (3) and located outside the box body (1).
6. The reducer for a saw blade cutting machine according to claim 1, characterized in that: Temperature vibration sensors (16) are installed on the outer wall of the box body (1) and at locations corresponding to the positions of the tapered roller bearing (6) and the cylindrical roller bearing (7).