A high speed ratio reverser for a reduction gear

Abstract

The application relates to the technical field of commutators, in particular to a high-speed-ratio commutator for a speed reducer, which is provided with a sealing protection pad assembly on the outer side of an auxiliary bearing, wherein the sealing protection pad assembly is arranged on the outer side of the auxiliary bearing connected with the commutator rotating shaft body to realize a protection function, that is, on one hand, a sealing pad formed by the sealing sleeve pad and the annular cover plays a shielding protection role on external dust and impurities; on the other hand, the first flow-through groove body and the oil guide distribution groove arranged in the inner ring of the sealing sleeve pad are used in cooperation with the oil storage box body to provide a lubrication auxiliary role for the contact surface between the rotating shaft body and the inner ring of the sealing sleeve pad, so that the rotating shaft body is prevented from causing friction damage to the sealing sleeve pad under the condition of long-time work, a gap between the inner ring of the sealing sleeve pad and the shaft surface of the rotating shaft body is avoided, the shielding protection role of the sealing sleeve pad is further improved, and the running work of the commutator is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of commutator technology, and in particular to a high-speed ratio commutator for speed reducers. Background Technology

[0002] A high-ratio commutator reducer is a precision speed reduction device that integrates high-ratio transmission and motion direction reversal. It achieves the change of direction between the input and output shafts (90-degree vertical reversal) through a unique bevel gear structure, while providing a high reduction ratio; converting high-speed motor input into low-speed, high-torque output. The commutator can change the direction of power transmission, reduce additional transmission components, and optimize space layout.

[0003] Before assembling and using a speed reducer commutator, lubricant or grease is applied between the internal components, especially between the transmission gears. This facilitates assembly and provides lubrication. The commutator's shaft typically uses bearings for auxiliary rotation. To prevent dust and impurities from contaminating the bearings, a rubber sealing ring is usually placed on the outside of the bearing. The rotating shaft contacts the inside of the rubber sealing ring, but this lacks proper lubrication. Especially at the high-speed input shaft position, the input shaft can easily cause friction damage to the inside of the rubber sealing ring, creating gaps and reducing the protection against external dust and impurities. This negatively impacts the commutator's operation.

[0004] Therefore, this invention proposes a high-speed ratio commutator for speed reducers to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-speed ratio commutator for speed reducers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-speed ratio commutator for a speed reducer, comprising a commutator body and a connecting disc seat disposed on the commutator body, an auxiliary bearing disposed in the connecting disc seat and sleeved on the rotating shaft body, and a sealing protective pad assembly disposed on the outside of the auxiliary bearing and sleeved on the outside of the rotating shaft body.

[0007] Preferably, the sealing gasket assembly includes a sealing gasket, a receiving cavity, mounting and positioning blocks, a first flow channel, an oil distribution channel, a placement slot, an annular cap, a connecting threaded cavity, a rubber threaded seal, connecting accessories, and auxiliary components; the sealing gasket is embedded in the connecting disc seat and sleeved on the outside of the rotating shaft body, a receiving cavity is provided on the front side of the sealing gasket, and mounting and positioning blocks are fixedly arranged in an annular pattern at equal intervals on the inner wall of the receiving cavity.

[0008] Preferably, a first flow groove is provided in the installation positioning block, and the first flow groove extends to the inner ring sidewall of the sealing gasket. The inner ring sidewall of the sealing gasket is provided with oil distribution grooves at equal intervals. The oil distribution grooves are annular and are connected to the groove opening of the first flow groove.

[0009] Preferably, a threaded groove is provided at the front end of the sealing gasket, and an installation hole is provided in the annular cover, and the annular cover is fixed to the front end of the sealing gasket by installation screws.

[0010] Preferably, the annular cap is provided with a connecting threaded groove, and two connecting threaded grooves are symmetrically arranged, wherein the connecting threaded grooves are threadedly connected to the rubber threaded seal.

[0011] Preferably, a connecting fitting is placed in the receiving cavity, and a placement slot is provided at the front end of the inner ring of the sealing gasket, with an auxiliary component placed in the placement slot.

[0012] Preferably, the connecting accessory includes an oil storage box body, an installation positioning slot, a second flow channel body, and an oil filling hole; the oil storage box body is configured as an annular box, and the oil storage box body is adapted to be inserted into the receiving cavity.

[0013] Preferably, an oil filling hole is provided at the front end of the oil storage box. Two oil filling holes are symmetrically arranged, and the positions of the oil filling holes and the connecting threaded grooves on the annular cover are corresponding and the number of sets is the same.

[0014] Preferably, the inner sidewall of the oil storage box is provided with mounting and positioning slots at equal intervals. The mounting and positioning slots are arranged in a ring at equal intervals, and the mounting and positioning slots correspond to the mounting and positioning blocks in the receiving cavity in terms of position and number. The mounting and positioning slots and the mounting and positioning blocks are adapted to engage with each other. A second flow channel is also provided in the mounting and positioning slots. The second flow channel is connected to the inner cavity of the oil storage box, and the second flow channel corresponds to the first flow channel in the mounting and positioning blocks in terms of position and number.

[0015] Preferably, the auxiliary component includes a loading ring and an auxiliary soft brush; the loading ring is inserted into a placement slot, and the auxiliary soft brush is provided on the inner sidewall of the loading ring in a ring shape; the loading ring is installed and fixed by screws.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention relates to a high-speed ratio commutator for a speed reducer, comprising a commutator body and a connecting disc seat mounted on the commutator body. An auxiliary bearing is housed within the connecting disc seat and fitted onto a rotating shaft. A sealing gasket assembly is located on the outer side of the auxiliary bearing and is fitted onto the outer side of the rotating shaft. This design achieves protection by using a sealing gasket assembly on the outer side of the auxiliary bearing connected to the commutator shaft. Specifically, the sealing gasket, formed by the sealing sleeve and the annular cover, isolates and protects against external dust and impurities. Furthermore, the oil reservoir, in conjunction with the first flow groove and oil distribution groove within the inner ring of the sealing sleeve, provides lubrication assistance to the contact surface between the rotating shaft and the inner ring of the sealing sleeve. To prevent frictional damage to the sealing gasket caused by the rotating shaft during prolonged operation, thus avoiding gaps between the inner ring of the sealing gasket and the shaft surface, this design further enhances the protective function of the sealing gasket, ensuring the smooth operation of the commutator. Furthermore, the auxiliary components in this solution provide two main benefits: firstly, the auxiliary soft brushes offer simple cleaning during shaft rotation; secondly, when oil is guided to the corresponding shaft surface via the oil distribution groove, any oil leakage is blocked by the annularly arranged auxiliary soft brushes. The oil adhering to the auxiliary soft brushes forms an oil barrier, effectively preventing external dust and impurities from escaping. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the high-speed ratio commutator structure connection of the reducer of the present invention; Figure 2 This is a schematic diagram of the connection plane of the high-speed ratio commutator structure for the reducer of the present invention; Figure 3 This is a schematic diagram of the connection structure of the inner cavity of the connecting disc seat according to the present invention; Figure 4 This is a schematic diagram of the right side of the exploded connection of the sealing and protective gasket assembly structure of the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structural connection at point A in the middle; Figure 6 This is a schematic diagram of the left side of the exploded connection of the sealing and protective pad assembly structure of the present invention; Figure 7 This is a partial cross-sectional view of the structural connection of the sealing and protective gasket assembly of the present invention; Figure 8 for Figure 7 Enlarged schematic diagram of the structural connection at point B.

[0018] In the diagram: commutator body 1, connecting plate seat 2, rotating shaft 3, auxiliary bearing 4, sealing gasket 501, receiving cavity 502, mounting and positioning block 503, first flow channel 504, oil distribution channel 505, placement slot 506, annular cover 507, connecting threaded cavity 508, rubber threaded seal 509, oil storage box 601, mounting and positioning slot 602, second flow channel 603, oil filling hole 604, loading ring 701, auxiliary soft brush 702. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-8 A high-speed ratio commutator for a speed reducer includes a commutator body 1 and a connecting disc seat 2 disposed on the commutator body 1. An auxiliary bearing 4 is disposed in the connecting disc seat 2 and is sleeved on a rotating shaft 3. A sealing and protective pad assembly is disposed on the outside of the auxiliary bearing 4 and is sleeved on the outside of the rotating shaft 3.

[0021] This solution achieves protection by setting a sealing and protective gasket assembly on the outside of the auxiliary bearing 4 connected to the commutator shaft 3. Firstly, the sealing gasket 501 and the annular cover 507 form a protective barrier against external dust and impurities. Secondly, the oil reservoir 601, in conjunction with the first flow groove 504 and the oil distribution groove 505 on the inner ring of the sealing gasket 501, provides lubrication to the contact surfaces between the shaft 3 and the inner ring of the sealing gasket 501. This prevents frictional damage to the sealing gasket 501 during prolonged operation, thus avoiding gaps between the inner ring of the sealing gasket 501 and the shaft surface of the shaft 3, further enhancing the protective effect of the sealing gasket 501 and ensuring the smooth operation of the commutator. Furthermore, the sealing gasket 501 has a slot 506 at the front end of its inner ring, within which an auxiliary component is installed. The auxiliary component also includes a mounting... The loading ring 701 and the auxiliary soft brush 702 are included. The loading ring 701 is inserted into the placement groove 506. The auxiliary soft brush 702 is provided on the inner ring side wall of the loading ring 701. The auxiliary soft brush 702 is arranged in a ring shape. The loading ring 701 is installed and fixed by screws. The purpose of installing the loading ring 701 with the auxiliary soft brush 702 on the inner side at the front end of the inner ring of the sealing sleeve 501 in the placement groove 506 is, on the one hand, to provide a certain position when the rotating shaft 3 rotates. The auxiliary soft brush 702 can provide a simple cleaning function; on the other hand, when the oil is guided to the corresponding position of the rotating shaft 3 through the oil distribution groove 505, if oil seeps out, the ring-shaped auxiliary soft brush 702 will play a simple blocking role for the seeping oil. When the oil adheres to the auxiliary soft brush 702, the auxiliary soft brush 702 with oil adhering to it forms an oil wall barrier, which has a better blocking effect on external dust and impurities.

[0022] The sealing gasket 501 in the sealing gasket assembly is embedded in the connecting disc seat 2 and sleeved on the outside of the rotating shaft body 3. A receiving cavity 502 is provided on the front side of the sealing gasket 501. An installation positioning block 503 is fixedly arranged in a ring at equal intervals on the inner sidewall of the receiving cavity 502. A first flow groove 504 is provided in the installation positioning block 503, and the first flow groove 504 extends to the inner ring sidewall of the sealing gasket 501. Oil distribution grooves 505 are provided at equal intervals on the inner ring sidewall of the sealing gasket 501. The oil distribution grooves 505 are annular, and the oil distribution grooves 505 and the grooves of the first flow groove 504 are... The sealing gasket 501 is connected to the sealing sleeve 501. A threaded groove is provided at the front end of the sealing gasket 501, and an annular cover 507 has an installation hole. The annular cover 507 is fixed to the front end of the sealing gasket 501 by installation screws. A connecting threaded groove cavity 508 is provided in the annular cover 507, and two connecting threaded groove cavities 508 are symmetrically arranged. The connecting threaded groove cavity 508 is threadedly connected to the rubber threaded seal plug 509. For the use of the sealing gasket assembly, the oil reservoir 601 is inserted into the receiving cavity 502 at the front end of the sealing gasket 501. Simultaneously, the mounting positioning groove 6 on the inner ring sidewall of the oil reservoir 601... Align the 02 with the mounting positioning block 503 in the receiving cavity 502. At this time, it is also necessary to ensure that one of the two oil filling holes 604 at the front end of the oil reservoir 601 is at the top and the other at the bottom. Then, insert the mounting positioning slot 602 and the mounting positioning block 503 so that the oil reservoir 601 slides into the receiving cavity 502 at the front end of the sealing gasket 501. After the oil reservoir 601 is installed in the receiving cavity 502, the second flow groove 603 in the mounting positioning slot 602 on the inner ring of the oil reservoir 601 and the first flow groove 603 in the mounting positioning block 503 on the inner side of the receiving cavity 502 are aligned. Align the groove 504, then install and fix the annular cover 507, that is, align the mounting hole on the annular cover 507 with the threaded groove at the front end of the sealing gasket 501. At the same time, align the two connecting threaded grooves 508 on the annular cover 507 with the oil filling holes 604 at the front end of the oil reservoir 601. Then, install and fix the annular cover 507 with screws. Next, install and fix the auxiliary components, that is, snap the loading ring 701 into the placement slot 506 on the inner ring at the front end of the sealing gasket 501, and then fix it with screws.

[0023] The use of connecting accessories involves installing the oil reservoir 601 into the receiving cavity 502 at the front end of the sealing gasket 501, and fixing the annular cover 507. The purpose of the annular cover 507 is to limit the movement of the oil reservoir 601, and the annular cover 507 contacts the front end face of the oil reservoir 601. The connecting accessories include the oil reservoir 601, the mounting and positioning slot 602, the second flow channel 603, and the oil filling hole 604. The oil reservoir 601 is configured as an annular box, and is fitted and inserted into the receiving cavity 502. A [further details about the connecting accessories are needed for accurate translation]. The oil filling hole 604 is provided, and two oil filling holes 604 are symmetrically arranged. The oil filling holes 604 correspond to the positions of the connecting threaded grooves 508 on the annular cover 507 and have the same number of sets. The inner ring sidewall of the oil storage box 601 is provided with equidistant mounting positioning slots 602, which are arranged in a ring. The mounting positioning slots 602 correspond to the positions of the mounting positioning blocks 503 in the receiving cavity 502 and have the same number of sets. The mounting positioning slots 602 and the mounting positioning blocks 503 are compatible and engage. A second flow channel 603 is also provided in the mounting positioning slot 602. The second flow channel 603 is connected to the inner cavity of the oil reservoir 601, and the second flow channel 603 and the first flow channel 504 in the mounting positioning block 503 are positioned correspondingly and have the same number of sets. When adding lubricating oil, the oil filling hole 604 located at the bottom front of the oil reservoir 601 needs to be sealed first. This is done by threading a rubber threaded plug 509 to the connecting threaded groove 508 of the annular cover 507 at the bottom until the end of the rubber threaded plug 509 is inserted into the corresponding oil filling hole 604. This process is performed on the bottom front side of the oil reservoir 601. The purpose of sealing the oil filling hole 604 is to inject oil into the oil reservoir 601 by means of a syringe, such as a needle, through the oil filling hole 604 at the upper front of the oil reservoir 601 until the oil reservoir 601 is full. After it is full, another rubber threaded plug 509 is used to seal the oil filling hole 604 at the upper front of the oil reservoir 601. That is, the rubber threaded plug 509 is threadedly connected to another threaded groove 508 on the annular cover 507 until the end of the rubber threaded plug 509 is inserted into the corresponding oil filling hole 604.The lubricating oil stored in the oil reservoir 601 flows into the second flow channel 603 in the mounting positioning slot 602, then flows through the first flow channel 504 in the mounting positioning block 503 to the inner ring of the sealing gasket 501, where it contacts the shaft surface of the rotating shaft 3. To ensure better uniform distribution of the lubricating oil, this design also includes an oil distribution groove 505 on the inner ring sidewall of the sealing gasket 501. This oil distribution groove 505 is annular, meaning that the oil flowing from the first flow channel 504 also enters the oil distribution groove 505, and then flows annularly from there, allowing for better distribution of the lubricating oil on the shaft surface of the rotating shaft 3.

[0024] When replacement or maintenance is required later, first disassemble the annular cover 507 by loosening the screws securing it, then remove the annular cover 507. Simultaneously, the limiting action on the oil reservoir 601 will be released, and then the oil reservoir 601 can be removed. If only adding lubricating oil is required during maintenance, it is not necessary to disassemble the oil reservoir 601, nor is it necessary to disassemble the annular cover 507. Simply unscrew the rubber threaded plug 509 located on the upper front of the annular cover 507, and then inject the lubricating oil using a syringe. When the lubricating oil is full, remove the rubber threaded plug 509. The rubber threaded plug 509 is threadedly connected to the corresponding threaded groove 508 until the rubber threaded plug 509 seals the corresponding oil filling hole 604. However, under long-term use, the lubricating oil located at the bottom of the inner cavity of the oil reservoir 601 may accumulate, or even become contaminated or accumulate impurities. At this time, the rubber threaded plug 509 at the lower front of the annular cover 507 is opened, thereby releasing the seal on the oil filling hole 604 at the lower front of the oil reservoir 601. Then, the remaining lubricating oil is extracted from the oil filling hole 604 using a syringe-like syringe for timely replacement to avoid long-term accumulation.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed ratio commutator for a speed reducer, characterized in that: It includes a commutator body (1) and a connecting plate seat (2) disposed on the commutator body (1). An auxiliary bearing (4) is disposed in the connecting plate seat (2), and the auxiliary bearing (4) is sleeved on the rotating shaft body (3). A sealing and protective pad assembly is disposed on the outside of the auxiliary bearing (4), and the sealing and protective pad assembly is sleeved on the outside of the rotating shaft body (3). The sealing gasket assembly includes a sealing gasket (501), a receiving cavity (502), a mounting positioning block (503), a first flow channel (504), an oil distribution channel (505), a placement slot (506), an annular cover (507), a connecting threaded cavity (508), a rubber threaded sealing plug (509), connecting accessories, and auxiliary components; the sealing gasket (501) is embedded in the connecting disc seat (2) and sleeved on the outside of the rotating shaft body (3). A receiving cavity (502) is provided on the front side of the sealing gasket (501), and mounting positioning blocks (503) are fixedly arranged in an annular pattern at equal intervals on the inner wall of the receiving cavity (502). The connecting fittings include an oil storage box (601), an installation positioning slot (602), a second flow channel (603), and an oil filling hole (604); the oil storage box (601) is configured as an annular box, and the oil storage box (601) is adapted to be inserted into the receiving cavity (502); The auxiliary components include a loading ring (701) and an auxiliary soft brush (702); the loading ring (701) is inserted into the placement slot (506), and the auxiliary soft brush (702) is provided on the inner ring sidewall of the loading ring (701). The auxiliary soft brush (702) is arranged in a ring shape, and the loading ring (701) is installed and fixed by screws.

2. The high-speed ratio commutator for a speed reducer according to claim 1, characterized in that: A first flow channel (504) is provided in the mounting positioning block (503), and the first flow channel (504) extends to the inner ring sidewall of the sealing gasket (501). The inner ring sidewall of the sealing gasket (501) is provided with oil distribution grooves (505) at equal intervals. The oil distribution grooves (505) are set as annular, and the oil distribution grooves (505) are connected to the groove opening of the first flow channel (504).

3. The high-speed ratio commutator for a speed reducer according to claim 1, characterized in that: A threaded groove is provided on the front end of the sealing gasket (501), and an installation hole is provided in the annular cover (507). The annular cover (507) is fixed to the front end of the sealing gasket (501) by installation screws.

4. The high-speed ratio commutator for a speed reducer according to claim 1, characterized in that: A connecting threaded cavity (508) is provided in the annular cover (507), and two connecting threaded cavities (508) are symmetrically arranged. The connecting threaded cavity (508) is threadedly connected to the rubber threaded seal plug (509).

5. The high-speed ratio commutator for a speed reducer according to claim 1, characterized in that: A connecting fitting is placed in the receiving cavity (502), and a placement slot (506) is provided on the front end of the inner ring of the sealing sleeve (501), and an auxiliary component is provided in the placement slot (506).

6. The high-speed ratio commutator for a speed reducer according to claim 1, characterized in that: An oil filling hole (604) is provided at the front end of the oil storage box (601). There are two oil filling holes (604) symmetrically arranged, and the oil filling holes (604) are located in the same position as the connecting threaded groove (508) on the annular cover (507) and the number of sets is the same.

7. The high-speed ratio commutator for a speed reducer according to claim 6, characterized in that: The inner ring sidewall of the oil storage box (601) is provided with mounting positioning slots (602) at equal intervals. The mounting positioning slots (602) are arranged in a ring at equal intervals. The mounting positioning slots (602) and the mounting positioning blocks (503) in the receiving cavity (502) are positioned correspondingly and have the same number of sets. The mounting positioning slots (602) and the mounting positioning blocks (503) are adapted to be engaged. A second flow channel (603) is also provided in the mounting positioning slots (602). The second flow channel (603) is connected to the inner cavity of the oil storage box (601). The second flow channel (603) and the first flow channel (504) in the mounting positioning blocks (503) are positioned correspondingly and have the same number of sets.

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