Multi-row planet traction transmission speed reduction bearing

Abstract

The utility model discloses a multi-row planet traction transmission speed reduction bearing, which belongs to the technical field of bearings and comprises an inner ring, a left end cover component is mounted on the outer side of the inner ring, and an output planet carrier is arranged on one side of the inner ring; through the arrangement of the buffer mounting device, the bearing can buffer vibration to a certain extent through the cooperation of the small damper and the elastic rubber ring, so that the possibility of adverse effects caused by vibration is reduced, and a worker can mount structures such as the inner ring through simple operation as required, so that the working efficiency is improved, and the working efficiency is improved. The working capability of the bearing is further improved; according to the bearing, the lubricating oil storage device is arranged, so that a worker can store and use lubricating oil to a certain extent through matching of the storage cylinder, the hose and other structures when needed, the difficulty of adding the lubricating oil is reduced, the labor burden of the worker is relieved, and the practicability of the bearing is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a multi-row planetary traction transmission reduction bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] Chinese patent application No. 201610125220.6 discloses a multi-row planetary traction drive reduction bearing, wherein the inner ring, outer ring and rolling elements together form a planetary traction drive gear train and correspond to the sun gear, outer ring and planet gear of the planetary traction drive gear train respectively; the planetary traction drive reduction bearing utilizes the positive pressure between the contact surfaces of the inner ring, rolling elements and outer ring to radially support the shaft, and utilizes the friction between the contact surfaces of the inner ring, rolling elements and outer ring to transmit motion and power; the reduction bearing integrates the functions of reduction and bearing, and the rolling elements are provided with at least two rows along the axial direction; An intermediate planetary carrier for connecting the rolling element axles is provided between the two adjacent rows of rolling elements, and the rolling elements in the two adjacent rows are evenly staggered in the circumferential direction. The reduction bearing adopts multiple rows of rolling elements for rotation, so that the contact between the rolling elements, the inner ring and the outer ring is more uniform in the circumferential and axial directions. The inner ring shaft can obtain good support and reduce the contact stress of the rolling elements during operation. At the same time, the torsional stiffness of the rolling element shaft system is relatively high, which can effectively reduce the torsional offset of the rolling element shaft system during the transmission process, effectively avoid interference or jamming of the reducer during transmission operation, and improve the transmission quality and efficiency.

[0004] 1. The above-mentioned patent disclosure has the problem of being easily affected by vibration and inconvenient to install, thereby reducing the working capacity of the bearing; 2. The above-mentioned patent disclosure has the problem of being inconvenient to add lubricating oil, thereby reducing the practicality of the bearing. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a multi-row planetary traction drive reduction bearing, which has the characteristics of high working capacity and strong practicality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a multi-row planetary traction drive reduction bearing, comprising an inner ring, a left end cover assembly being installed on the outer side of the inner ring, an output planetary carrier being provided on one side of the inner ring, a right end cover assembly being installed on the outer side of the output planetary carrier, an outer ring assembly being installed between the left end cover assembly and the right end cover assembly, a buffer installation device being provided on the outer side of the left end cover assembly, and a lubrication storage device being provided on the side of the left end cover assembly away from the right end cover assembly.

[0007] Preferably, the buffer mounting device includes a fixing ring, a mounting assembly, a small damper, an elastic rubber ring, a connecting ring and a mounting ring. A connecting ring is installed on the outer side of the left end cover assembly, a fixing ring is provided on one side of the connecting ring, a mounting ring is provided between the connecting ring and the fixing ring, an elastic rubber ring is installed between the mounting ring and the connecting ring, two small dampers are installed between the mounting ring and the connecting ring and on the inner side of the elastic rubber ring, and two mounting assemblies are installed on the side of the fixing ring close to the mounting ring.

[0008] Preferably, the mounting assembly includes an insert block, a compression spring and a clamping block. Two insert blocks are installed on one side of the fixing ring close to the mounting ring. A clamping block is provided on the inner side of the insert block. The insert block and the clamping block are connected by a compression spring.

[0009] Preferably, the inner sides of the top and bottom of the mounting ring are respectively fitted with the outer sides of the two inserting blocks.

[0010] Preferably, the lubrication storage device includes a storage cylinder, a sealing cover, a hose and a valve. A storage cylinder is provided on the side of the left end cover assembly away from the right end cover assembly, a sealing cover is installed on the top of the storage cylinder through a thread, a hose is installed on the side of the storage cylinder away from the left end cover assembly, and a valve is installed on the top of the hose.

[0011] Preferably, the lubrication storage device further comprises a threaded block, and the threaded block is installed on a side of the storage cylinder close to the left end cover assembly.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model provides a buffer installation device, so that the bearing can buffer the vibration to a certain extent through the cooperation of a small damper and an elastic rubber ring, thereby reducing the possibility of adverse effects caused by vibration. In addition, the staff can install the inner ring and other structures through simple operations when needed, thereby improving the working capacity of the bearing.

[0014] 2. The utility model provides a lubrication storage device, so that the staff can store and use the lubricating oil when needed through the cooperation of the storage cylinder and the hose and other structures, thereby reducing the difficulty of adding lubricating oil, reducing the labor burden of the staff, and thus improving the practicality of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a three-dimensional cutaway view of the utility model;

[0017] Figure 3 This is a three-dimensional cutaway view of the buffer installation device of the present invention;

[0018] Figure 4 A three-dimensional cutaway view of the installation assembly of the present utility model;

[0019] Figure 5 This is a three-dimensional cutaway view of the lubrication storage device of the present invention.

[0020] In the figure: 1. Inner ring; 2. Output planetary carrier; 3. Right end cover assembly; 4. Buffer mounting device; 41. Fixing ring; 42. Mounting assembly; 421. Insert block; 422. Compression spring; 423. Block; 43. Small damper; 44. Elastic rubber ring; 45. Connecting ring; 46. Mounting ring; 5. Lubrication storage device; 51. Storage cylinder; 52. Sealing cover; 53. Threaded block; 54. Hose; 55. Valve; 6. Left end cover assembly; 7. Outer ring assembly. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-5 The utility model provides the following technical solutions: a multi-row planetary traction drive reduction bearing, comprising an inner ring 1, a left end cover assembly 6 is installed on the outer side of the inner ring 1, an output planet carrier 2 is provided on one side of the inner ring 1, a right end cover assembly 3 is installed on the outer side of the output planet carrier 2, an outer ring assembly 7 is installed between the left end cover assembly 6 and the right end cover assembly 3, a buffer installation device 4 is provided on the outer side of the left end cover assembly 6, and a lubrication storage device 5 is provided on the side of the left end cover assembly 6 away from the right end cover assembly 3.

[0024] Specifically, the buffer mounting device 4 includes a fixing ring 41, a mounting assembly 42, a small damper 43, an elastic rubber ring 44, a connecting ring 45 and a mounting ring 46. The connecting ring 45 is installed on the outer side of the left end cover assembly 6, and a fixing ring 41 is provided on one side of the connecting ring 45. A mounting ring 46 is provided between the connecting ring 45 and the fixing ring 41. An elastic rubber ring 44 is installed between the mounting ring 46 and the connecting ring 45. Two small dampers 43 are installed between the mounting ring 46 and the connecting ring 45 and on the inner side of the elastic rubber ring 44. Two mounting assemblies 42 are installed on the side of the fixing ring 41 close to the mounting ring 46.

[0025] By adopting the above technical solution, the bearing can buffer vibration to a certain extent through the cooperation of the small damper 43 and the elastic rubber ring 44, thereby reducing the possibility of adverse effects caused by vibration and ensuring normal operation.

[0026] Specifically, the mounting assembly 42 includes an insert block 421, a compression spring 422 and a clamping block 423. Two insert blocks 421 are installed on the side of the fixing ring 41 close to the mounting ring 46. A clamping block 423 is provided on the inner side of the insert block 421. The insert block 421 and the clamping block 423 are connected by a compression spring 422.

[0027] By adopting the above technical solution, the staff can install the inner ring 1 and other structures through simple operations when needed, thereby reducing the difficulty of the installation work and further alleviating the labor burden of the staff.

[0028] Specifically, the inner sides of the top and bottom of the mounting ring 46 are respectively fitted with the outer sides of the two inserting blocks 421 .

[0029] By adopting the above technical solution, the bearing can ensure the normal cooperation between the mounting ring 46 and the two insert blocks 421, thereby reducing the possibility of accidental shaking of the mounting ring 46 and ensuring normal operation.

[0030] When this embodiment is used, when a multi-row planetary traction drive reduction bearing is required, the fixing ring 41 in the buffer mounting device 4 is fixed in the working position, and the staff brings the inner ring 1 and the output planet carrier 2 and other structures close to the fixing ring 41 and gradually puts the mounting ring 46 on the plug-in blocks 421 in the two mounting assemblies 42. Under the action of pressure, the inclined surfaces of the two clamping blocks 423 are subjected to force, and then gradually all enter the two plug-in blocks 421. When moved to the corresponding position, the two clamping blocks 423 are partially separated from the two plug-in blocks 421 under the action of two compression springs 422, thereby limiting the mounting ring 46 and other structures. The installation is completed, and then the staff can use it through the inner ring 1, the output planet carrier 2, the right end cover assembly 3, the left end cover assembly 6 and the outer ring assembly 7. The small damper 43 and the elastic rubber ring 44 between the connecting ring 45 and the mounting ring 46 can buffer the vibration.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that the lubrication storage device 5 includes a storage cylinder 51, a sealing cover 52, a hose 54 and a valve 55. The storage cylinder 51 is provided on the side of the left end cover assembly 6 away from the right end cover assembly 3, and the sealing cover 52 is installed on the top of the storage cylinder 51 through a thread. The hose 54 is installed on the side of the storage cylinder 51 away from the left end cover assembly 6, and the valve 55 is installed on the top of the hose 54.

[0033] By adopting the above technical solution, the staff can store and use the lubricating oil when needed through the cooperation of the storage cylinder 51 and the hose 54, thereby reducing the difficulty of adding lubricating oil and alleviating the labor burden of the staff.

[0034] Specifically, the lubrication storage device 5 further includes a threaded block 53 , and the threaded block 53 is installed on a side of the storage cylinder 51 close to the left end cover assembly 6 .

[0035] By adopting the above technical solution, the staff can connect or separate the storage cylinder 51 and the left end cover assembly 6 through the threaded block 53 when needed, thereby facilitating the staff to load and unload the storage cylinder 51 and other structures.

[0036] When this embodiment is used, when lubrication is required to the inner ring 1 and other structures, the staff opens the valve 55 in the lubrication storage device 5 and aligns the end of the hose 54 with the position that needs lubrication. The lubricating oil stored in the storage cylinder 51 gradually passes through the hose 54 and contacts the position that needs lubrication, thereby performing lubrication work. When necessary, the staff can unscrew the sealing cover 52 to add lubricating oil, and the threaded block 53 plays the role of connection and installation.

[0037] The structure and principle of the inner ring 1, the output planet carrier 2, the right end cover assembly 3 composed of the right end cover and the angular contact bearing, the left end cover assembly 6 composed of the left end cover and the angular contact bearing, and the outer ring assembly 7 composed of the rolling element, the intermediate planet carrier, the load-reducing groove, the outer ring, the retaining planet carrier, the fixing hole and the boss in the utility model have been disclosed in the multi-row planetary traction transmission reduction bearing disclosed in Chinese patent application No. 201610125220.6. Its working principle is to use the positive pressure between the contact surfaces of the inner ring, the rolling element and the outer ring to support the radial direction of the shaft, and to utilize the friction between the contact surfaces of the inner ring, the rolling element and the outer ring to support the shaft. The friction force is used to transmit motion and power, thereby realizing the planetary friction wheel transmission and bearing function. This reduction bearing integrates the reduction and bearing functions into one, and can be used as a reducer and bearing at the same time. It can be used in devices that need to support the rotating shaft and realize deceleration (such as hub motors, etc.), thereby saving the number of bearings and greatly simplifying the structure of such devices. In addition, compared with the reduction bearing using gear transmission, the planetary traction transmission reduction bearing has the advantages of simple structure, stable support operation, and slippage during overload transmission. The inner ring of the present invention is not limited to the traditional hollow cylindrical structure, and the inner ring can also be solid. Shaft structure, when the inner ring is a cylindrical sleeve structure, a spline can be set in the sleeve or an interference fit can be used to cooperate with the input shaft transmission. When the inner ring is a solid shaft structure, this solid shaft can be used as the input shaft. The inner ring with this structure is conducive to simplifying the structure of the reduction bearing. The friction transmission between the inner ring, rolling element, and outer ring contact surface of the present invention should preferably be wet friction transmission, that is, lubricant is added between the friction contact surfaces, thereby increasing the transmission power, reducing friction and wear, and improving efficiency and service life. In addition, the rolling elements are arranged in multiple rows along the axial direction to make the contact between the rolling elements and the outer circle and inner ring more uniform. , reducing the contact stress of the rolling elements, thereby effectively improving the load capacity of the reducer. On the other hand, since the rolling element axles of the two adjacent rows are independent of each other and fixed on the intermediate planetary carrier, this structural form effectively shortens the length of a single rolling element axle, so its structural rigidity is relatively strong. At the same time, due to the large rigidity of the intermediate planetary carrier, it can be approximately regarded as a rigid body, ensuring that the shaft section connecting each rolling element axle to the intermediate planetary carrier is parallel to the inner ring axis. Therefore, the offset generated by the force on the rolling element axle of each row will not accumulate on the rolling element axle of the next row, ultimately avoiding interference or jamming of the rolling element axle due to excessive offset.

[0038] The structure and principle of the small and medium-sized damper 43 of the utility model have been disclosed in a micro-box device for computer network security disclosed in Chinese patent application number 202020567163.9. Its working principle is composed of a piston and an oil tank, the interior of which is filled with oil. When the object moves, the piston will move in the oil, thereby consuming energy and slowing down the movement of the object.

[0039] The working principle and use process of the present invention are as follows: when it is necessary to use a multi-row planetary traction drive reduction bearing, the fixing ring 41 in the buffer mounting device 4 is fixed in the working position, the staff brings the inner ring 1 and the output planet carrier 2 and other structures close to the fixing ring 41 and gradually puts the mounting ring 46 on the plug-in blocks 421 in the two mounting components 42. Under the action of pressure, the inclined surfaces of the two clamping blocks 423 are subjected to force, and then gradually enter the two plug-in blocks 421. After moving to the corresponding position, the two clamping blocks 423 are partially separated from the two plug-in blocks 421 under the action of the two compression springs 422, thereby limiting the mounting ring 46 and other structures, and the installation is completed. The staff can then use it through the inner ring 1, the output planetary carrier 2, the right end cover assembly 3, the left end cover assembly 6 and the outer ring assembly 7. The small damper 43 and the elastic rubber ring 44 between the connecting ring 45 and the mounting ring 46 can buffer the vibration; when it is necessary to lubricate the inner ring 1 and other structures, the staff opens the valve 55 in the lubrication storage device 5, aligns the end of the hose 54 with the position that needs lubrication, and the lubricating oil stored in the storage cylinder 51 gradually passes through the hose 54 and contacts the position that needs lubrication, thereby performing lubrication work. When necessary, the staff can unscrew the sealing cover 52 to add lubricating oil, and the threaded block 53 plays the role of connection and installation.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-row planetary traction drive reduction bearing, comprising an inner ring (1), a left end cover assembly (6) being mounted on the outer side of the inner ring (1), an output planet carrier (2) being provided on one side of the inner ring (1), a right end cover assembly (3) being mounted on the outer side of the output planet carrier (2), an outer ring assembly (7) being mounted between the left end cover assembly (6) and the right end cover assembly (3), and characterized in that: A buffer installation device (4) is provided on the outer side of the left end cover assembly (6), and a lubrication storage device (5) is provided on the side of the left end cover assembly (6) away from the right end cover assembly (3).

2. The multi-row planetary traction drive reduction bearing according to claim 1, characterized in that: The buffer installation device (4) comprises a fixing ring (41), a mounting assembly (42), a small damper (43), an elastic rubber ring (44), a connecting ring (45) and a mounting ring (46); a connecting ring (45) is installed on the outer side of the left end cover assembly (6); a fixing ring (41) is provided on one side of the connecting ring (45); a mounting ring (46) is provided between the connecting ring (45) and the fixing ring (41); an elastic rubber ring (44) is installed between the mounting ring (46) and the connecting ring (45); two small dampers (43) are installed between the mounting ring (46) and the connecting ring (45) and at a position inside the elastic rubber ring (44); and two mounting assemblies (42) are installed on one side of the fixing ring (41) close to the mounting ring (46).

3. The multi-row planetary traction drive reduction bearing according to claim 2, characterized in that: The mounting assembly (42) comprises an insert block (421), a compression spring (422) and a clamping block (423); two insert blocks (421) are mounted on one side of the fixing ring (41) close to the mounting ring (46); a clamping block (423) is provided on the inner side of each insert block (421); and the insert block (421) and the clamping block (423) are connected via a compression spring (422).

4. The multi-row planetary traction drive reduction bearing according to claim 3, characterized in that: The inner sides of the top and bottom of the mounting ring (46) are respectively fitted with the outer sides of the two inserting blocks (421).

5. The multi-row planetary traction drive reduction bearing according to claim 1, characterized in that: The lubricating storage device (5) comprises a storage cylinder (51), a sealing cover (52), a hose (54) and a valve (55). The storage cylinder (51) is provided on the side of the left end cover assembly (6) away from the right end cover assembly (3). The sealing cover (52) is screwedly mounted on the top of the storage cylinder (51). The hose (54) is mounted on the side of the storage cylinder (51) away from the left end cover assembly (6). The valve (55) is mounted on the top of the hose (54).

6. The multi-row planetary traction drive reduction bearing according to claim 5, characterized in that: The lubricating storage device (5) further comprises a threaded block (53), and the threaded block (53) is installed on one side of the storage cylinder (51) close to the left end cover assembly (6).

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