Auxiliary fixing shaft structure

Abstract

The utility model discloses an auxiliary fixing shaft structure, and belongs to the technical field of shaft sleeves. An auxiliary fixing shaft structure comprises a bearing seat and further comprises a shaft sleeve arranged in the bearing seat, multiple sets of oil grooves are formed in the inner wall of the shaft sleeve, an oil channel of a spiral structure is formed in the outer wall of the shaft sleeve, the multiple sets of oil grooves are communicated with the oil channel through communicating holes respectively, and an oil supply part is arranged on the bearing seat; the oil duct is arranged on the outer wall of the shaft sleeve, lubricating oil is introduced into the oil duct during starting, stopping or low speed, the lubricating oil can take away heat of the shaft sleeve and reduce the temperature of the shaft sleeve in the process of flowing along the oil duct, part of the lubricating oil enters the oil groove through the communicating hole, the lubricating effect between the rotating shaft and the shaft sleeve can be improved, and the service life of the rotating shaft is prolonged. Therefore, aging and abrasion of a shaft sleeve material can be reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to an auxiliary fixed shaft structure. Background Art

[0002] At present, in the pharmaceutical production process, centrifugal equipment is generally used to centrifuge raw materials. In order to ensure reliable support for the main shaft of the centrifugal equipment, sliding bearings that can maintain stable performance at high speeds are used. Among them, the shaft sleeve is a cylindrical mechanical part that is sleeved on the rotating shaft. Generally speaking, the shaft sleeve and the bearing seat are disassembled and connected to the bearing seat by means of interference fit or bolts or pins, while the shaft sleeve is connected to the rotating shaft in a relative rotational manner.

[0003] At present, the friction generated by the relative movement between the sleeve and the rotating shaft not only consumes the rotational energy of the rotating shaft, but also causes the temperature to rise, thereby accelerating the aging and wear of the sleeve material. Although lubrication can significantly reduce friction, friction cannot be ignored when the equipment starts, stops or runs at low speed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the friction between the shaft sleeve and the rotating shaft is large, high temperature is easily generated, and the service life of the shaft sleeve is affected, and an auxiliary fixed shaft structure is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An auxiliary fixed shaft structure includes a bearing seat and a shaft sleeve arranged in the bearing seat, wherein the inner wall of the shaft sleeve is provided with multiple groups of oil grooves, and the outer wall of the shaft sleeve is provided with an oil channel with a spiral structure. The multiple groups of oil grooves are respectively connected to the oil channel through connecting holes, and an oil supply part is provided on the bearing seat.

[0007] In order to facilitate the supply of oil to the oil tank and the oil channel, preferably, the oil supply part includes an oil storage box fixedly arranged on the top of the bearing seat, a refueling pipe fixedly arranged on the oil storage box, the oil storage box is connected to one end of the oil channel through an oil drain pipe, an oil pump is fixedly arranged on the bearing seat, one end of the oil pump is connected to the oil storage box through a first pipe, and the other end of the oil pump is connected to the other end of the oil channel through a second pipe.

[0008] In order to improve the sealing effect, two groups of mounting grooves are further provided on the bearing seat, the oil inlet and oil outlet of the oil pump are respectively connected to the corresponding mounting grooves, and one end of the first pipe and the second pipe are respectively connected to the corresponding mounting grooves, a sealing ring is provided in the mounting groove, and the bottom end face of the oil pump is against the sealing ring.

[0009] In order to filter and collect particulate matter in the lubricating oil, a filter box is further detachably provided on the oil pump, the output end of the filter box is connected to the oil inlet, and the input end of the filter box is connected to the second pipeline.

[0010] Preferably, a mounting hole is provided on the bearing seat, the shaft sleeve is slidably arranged in the mounting hole, and the shaft sleeve is fixedly connected to the bearing seat via a pin shaft.

[0011] Furthermore, a fixing ring is fixedly provided at both ends of the bearing seat, a dust cover is sleeved on the fixing ring, the inner ring of the dust cover is against the outer wall of the rotating shaft, and the material of the dust cover is rubber.

[0012] Compared with the prior art, the present invention provides an auxiliary fixed shaft structure with the following beneficial effects:

[0013] 1. This auxiliary fixed shaft structure opens an oil channel on the outer wall of the sleeve and introduces lubricating oil into the oil channel. As the lubricating oil flows along the oil channel, it not only takes away the heat of the sleeve and reduces the temperature of the sleeve, but also a part of the lubricating oil enters the oil tank through the connecting hole, which can increase the lubrication effect between the rotating shaft and the sleeve, reduce friction, thereby reducing aging and wear of the sleeve material and extending the service life;

[0014] 2. The auxiliary fixed shaft structure can reduce dust ingress by installing dust covers at both ends of the bearing seat, which helps reduce wear and increase service life.

[0015] The parts not involved in this device are the same as the existing technology or can be implemented by using the existing technology. The utility model opens an oil channel on the outer wall of the sleeve, and introduces lubricating oil into the oil channel during start-up, shutdown or low speed. During the flow of the lubricating oil along the oil channel, it can not only take away the heat of the sleeve and reduce the temperature of the sleeve, but also a part of the lubricating oil enters the oil tank through the connecting hole, which can increase the lubrication effect between the rotating shaft and the sleeve, reduce friction, thereby reducing the aging and wear of the sleeve material and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an auxiliary fixed shaft structure proposed by the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of an auxiliary fixed shaft structure proposed by the utility model Figure 2 ;

[0018] Figure 3 This is a cross-sectional view of an auxiliary fixed shaft structure proposed by the present utility model;

[0019] Figure 4An auxiliary fixed shaft structure proposed by the utility model Figure 3 Enlarged view of part A.

[0020] In the figure: 1. Bearing seat; 101. Mounting hole; 102. Retaining ring; 2. Bushing; 201. Oil tank; 202. Oil channel; 203. Connecting hole; 3. Oil storage box; 301. Filling pipe; 302. Oil drain pipe; 303. First pipeline; 304. Second pipeline; 305. Mounting groove; 306. Sealing ring; 4. Oil pump; 5. Dust cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] Example:

[0024] Reference Figure 1-Figure 4, an auxiliary fixed shaft structure, including a bearing seat 1, and also including a shaft sleeve 2 arranged in the bearing seat 1, here, we have a mounting hole 101 opened on the bearing seat 1, the shaft sleeve 2 is slidably set in the mounting hole 101, and the shaft sleeve 2 is fixedly connected to the bearing seat 1 through a pin shaft, positioning holes are opened on the side walls at both ends of the shaft sleeve 2, and a pin hole corresponding to the positioning hole is opened on the top of the bearing seat 1. The pin shaft is inserted into the pin hole and extends into the positioning hole to fix the shaft sleeve 2 in the mounting hole 101. The structure is simple and the fixation is reliable. A plurality of groups of oil grooves 201 are opened on the inner wall of the shaft sleeve 2. The oil grooves 201 are opened in two to ten groups, preferably five groups, and the five groups are along the axial direction of the shaft sleeve 2. The oil grooves 201 are equidistantly distributed and have an annular structure. An oil channel 202 with a spiral structure is opened on the outer wall of the sleeve 2. Multiple groups of oil grooves 201 are connected to the oil channel 202 through connecting holes 203 respectively, and an oil supply part is provided on the bearing seat 1. When starting, stopping or running at low speed, lubricating oil is introduced into the oil channel 202. During the flow of lubricating oil along the oil channel 202, it can not only take away the heat of the sleeve 2 and reduce the temperature of the sleeve 2, but also a part of the lubricating oil enters the oil groove 201 through the connecting hole 203, which can increase the lubrication effect between the rotating shaft and the sleeve 2 and reduce friction, thereby reducing the aging and wear of the sleeve 2 material and improving the service life.

[0025] Reference Figure 1-Figure 3 Here, we design the oil supply unit to be fixed with an oil reservoir 3 on the top of the bearing seat 1. A refueling pipe 301 is fixed on the oil reservoir 3. The oil reservoir 3 is connected to one end of the oil passage 202 through an oil drain pipe 302. An oil pump 4 is fixed on the bearing seat 1. One end of the oil pump 4 is connected to the oil reservoir 3 through a first pipe 303, and the other end of the oil pump 4 is connected to the other end of the oil passage 202 through a second pipe 304. During use, the lubricating oil in the oil passage 202 is pumped away by the oil pump 4, forming a negative pressure in the oil passage 202. The lubricating oil in the oil reservoir 3 can then enter the Da'ao oil passage 202 through the oil drain pipe 302, achieving a circulating flow. This not only reduces the temperature of the shaft sleeve 2, but also increases the lubrication between the shaft sleeve 2 and the rotating shaft, improving the use effect. In addition, the gap between the outer wall of the shaft sleeve 2 and the inner wall of the mounting hole 101 is very small, even an interference fit, so the sealing gasket can be omitted.

[0026] Reference Figure 3 and Figure 4Two groups of mounting grooves 305 are provided on the bearing seat 1, and the oil inlet and oil outlet of the oil pump 4 are connected to the corresponding mounting grooves 305 respectively, and one end of the first pipe 303 and the second pipe 304 are connected to the corresponding mounting grooves 305 respectively, that is, the end of the first pipe 303 away from the oil storage box 3 is connected to one group of mounting grooves 305, and the end of the second pipe 304 away from the oil channel 202 is connected to the other group of mounting grooves 305, and a sealing ring 306 is provided in the mounting groove 305, and the bottom end surface of the oil pump 4 is abutted against the sealing ring 306, and the oil pump 4 is fixed to the bearing seat 1 by bolts. When in use, by providing the mounting groove 305 on the bearing seat 1 and providing the sealing ring 306 in the mounting groove 305, the sealing effect between the oil pump 4 and the bearing seat 1 can be improved.

[0027] Reference Figure 1-Figure 3 A filter box is removably provided on the oil pump 4. It is preferred to fix the filter box to the oil pump 4 with screws, connect the output end of the filter box with the oil inlet, and connect the input end of the filter box with the second pipe 304. When in use, the lubricating oil can be filtered by connecting the input end of the oil pump 4 with the second pipe 304 through the filter box, so as to collect impurities in the lubricating oil, reduce the influence of impurities caused by wear on lubrication, and improve the use effect.

[0028] Reference Figure 1-Figure 3 A fixing ring 102 is fixedly provided at both ends of the bearing seat 1, and a dust cover 5 is sleeved on the fixing ring 102, so that the inner ring of the dust cover 5 is against the outer wall of the rotating shaft, and the material of the dust cover 5 is rubber, silicone or polyurethane, preferably rubber. When in use, by installing the dust cover 5 on the bearing seat 1, dust entry can be reduced, which helps to reduce wear and improve service life.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An auxiliary fixed shaft structure, comprising a bearing seat (1), characterized in that: It also includes a shaft sleeve (2) arranged in the bearing seat (1), the inner wall of the shaft sleeve (2) is provided with multiple groups of oil grooves (201), the outer wall of the shaft sleeve (2) is provided with an oil channel (202) with a spiral structure, the multiple groups of oil grooves (201) are respectively connected to the oil channel (202) through a connecting hole (203), and the bearing seat (1) is provided with an oil supply portion.

2. The auxiliary fixed shaft structure according to claim 1, characterized in that: The oil supply portion comprises an oil storage box (3) fixedly arranged on the top of the bearing seat (1), a refueling pipe (301) fixedly arranged on the oil storage box (3), the oil storage box (3) being connected to one end of the oil passage (202) via an oil drain pipe (302), an oil pump (4) fixedly arranged on the bearing seat (1), one end of the oil pump (4) being connected to the oil storage box (3) via a first pipe (303), and the other end of the oil pump (4) being connected to the other end of the oil passage (202) via a second pipe (304).

3. The auxiliary fixed shaft structure according to claim 2, characterized in that: Two groups of mounting grooves (305) are provided on the bearing seat (1), the oil inlet and the oil outlet of the oil pump (4) are respectively connected to the corresponding mounting grooves (305), and one end of the first pipe (303) and the second pipe (304) are respectively connected to the corresponding mounting grooves (305), a sealing ring (306) is provided in the mounting groove (305), and the bottom end surface of the oil pump (4) abuts against the sealing ring (306).

4. The auxiliary fixed shaft structure according to claim 3, characterized in that: The oil pump (4) is provided with a detachable filter box, the output end of the filter box is connected to the oil inlet, and the input end of the filter box is connected to the second pipeline (304).

5. The auxiliary fixed shaft structure according to claim 1, characterized in that: The bearing seat (1) is provided with a mounting hole (101), the shaft sleeve (2) is slidably arranged in the mounting hole (101), and the shaft sleeve (2) is fixedly connected to the bearing seat (1) via a pin shaft.

6. The auxiliary fixed shaft structure according to claim 5, characterized in that: A fixing ring (102) is fixedly provided at both ends of the bearing seat (1), a dust cover (5) is sleeved on the fixing ring (102), an inner ring of the dust cover (5) abuts against the outer wall of the rotating shaft, and the dust cover (5) is made of rubber.

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