Turbine shaft assembly for ease of maintenance

Abstract

The utility model relates to turbine technical field, aims at providing a kind of turbine shaft assembly convenient to maintain, including transmission shaft, turbine body and bearing, wherein, transmission shaft is equipped with at least one section for installing the mounting section of bearing, transmission shaft is equipped with the oil storage cavity for storing lubricating oil, mounting section is equipped with the oil outlet hole being communicated with the outside space of oil storage cavity, oil hole is set up on inner ring body, for the lubricating oil of oil outlet hole discharge is introduced to lubricating ball outer wall, mounting section is equipped with oil immersion body between inner ring body, for the lubricating oil of oil outlet hole discharge is introduced to oil hole, oil immersion body can be made of sponge, for absorbing, storing and transmitting lubricating oil, the beneficial effects of the utility model are: transmission shaft is equipped with the oil storage cavity for storing lubricating oil, can continuously lubricate bearing, to keep its lubricating degree, reduce energy loss caused by friction;Lubricating oil is continuously and slowly injected into bearing, without frequently lubricating maintenance to the turbine shaft assembly.

Description

Technical Field

[0001] This utility model relates to the field of turbine technology, and more specifically, to a turbine shaft assembly that is easy to maintain. Background Technology

[0002] In the field of turbine technology, turbine shaft assemblies, as the core transmission components of turbine equipment, are widely used in aerospace, energy, industrial machinery, and many other fields. Their operational stability and ease of maintenance directly affect the overall equipment's efficiency, service life, and maintenance costs. Currently, turbine shaft assemblies on the market typically consist of a drive shaft, a turbine body fixedly mounted outside the drive shaft, and bearings used to connect the drive shaft to external components. Among these, the bearings, as key friction-reducing components, play a decisive role in the component's energy loss, wear rate, and failure rate due to their lubrication condition.

[0003] However, existing turbine shaft assemblies face significant lubrication and maintenance challenges in practical applications. In traditional designs, bearing lubrication largely relies on periodic manual oiling. This involves maintenance personnel disassembling the equipment casing or related protective structures at fixed intervals and using specialized tools to directly inject lubricating oil into the gap between the bearing's inner and outer rings and the lubrication balls. This maintenance method suffers from the following core problems:

[0004] 1. High maintenance frequency and high operating costs: Due to the lack of an effective lubricant storage and continuous supply structure, the injected lubricant will gradually be lost or aged as the bearing operates at high speed, resulting in a rapid decline in bearing lubrication effect. To avoid failures such as increased friction, localized overheating, or even component seizure caused by insufficient lubrication, frequent (usually every few days to several weeks) manual lubrication maintenance is required. This not only consumes a lot of manpower but also leads to frequent equipment downtime, seriously affecting the continuity of production or operations. This is especially true for critical equipment such as large industrial turbines and aero engines, where the economic losses caused by downtime maintenance are even more significant.

[0005] 2. Poor lubrication uniformity, limiting bearing life: During manual lubrication, it is difficult to precisely control the amount and location of lubricating oil, which can easily lead to waste and contamination due to excessive lubrication in some areas, or "dry friction" caused by insufficient lubrication in others. This uneven lubrication state will cause significant differences in the degree of wear between the inner and outer rings of the bearing and the lubricating balls, accelerating bearing fatigue damage, significantly shortening its service life, and increasing the cost of replacing equipment components.

[0006] 3. The lubrication operation is complicated and prone to secondary problems: The bearing installation position of some turbine shaft components is relatively hidden. Manual lubrication requires disassembling many related parts, the operation process is cumbersome and requires a high level of technical proficiency from the maintenance personnel.

[0007] Therefore, in view of the problems of high frequency, high cost, poor effect and low efficiency of existing turbine shaft assemblies in terms of lubrication maintenance, there is an urgent need to design a turbine shaft assembly structure that can realize continuous lubricant supply, reduce maintenance frequency and improve lubrication reliability, so as to meet the actual needs of industrial equipment for long-term stable operation and low operation and maintenance costs. Utility Model Content

[0008] In view of the problems existing in the prior art, the present invention provides a turbine shaft assembly that is easy to maintain, so as to solve the technical problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a turbine shaft assembly that is easy to maintain, comprising a drive shaft, a turbine body, and bearings, wherein,

[0010] The turbine body is fixedly mounted on the outside of the drive shaft; rotation of the turbine body drives the drive shaft to rotate.

[0011] The drive shaft is provided with at least one mounting section for mounting bearings.

[0012] The bearing includes an outer ring body that connects to peripheral components, an inner ring body that connects to the drive shaft, and lubricating balls located between the outer and inner ring bodies. It is used to enable the drive shaft to move between the drive shaft and peripheral components, reducing energy loss caused by friction.

[0013] The drive shaft has an oil reservoir for storing lubricating oil, and the mounting section has an oil outlet that connects the oil reservoir to the external space. The inner ring has an oil injection hole for introducing the lubricating oil discharged from the oil outlet into the outer wall of the lubricating ball.

[0014] An oil-immersing body is provided between the mounting section and the inner ring body to introduce the lubricating oil discharged from the oil outlet into the oil injection hole. The oil-immersing body can be made of sponge and is used to absorb, store and transfer the lubricating oil.

[0015] By adopting the above technical solution, the transmission shaft is provided with an oil reservoir for storing lubricating oil, which can continuously lubricate the bearing to maintain its lubrication level and reduce energy loss caused by friction; the lubricating oil is continuously and slowly injected into the bearing, eliminating the need for frequent lubrication maintenance of the turbine shaft assembly.

[0016] The present invention is further configured such that a refueling pipe is provided on one end face of the drive shaft near the turbine body, and an oil delivery channel connecting the refueling pipe and the oil storage chamber is provided inside the drive shaft.

[0017] The present invention is further configured such that the oil storage chamber is opened at the installation section, and the number of oil storage chambers corresponds to the number of installation sections, and a connecting channel is opened between two adjacent oil storage chambers to connect the two.

[0018] The present invention is further configured such that the oil filling pipe is located at the center of the end face of the drive shaft, and the oil delivery channel is inclined and gradually tilts towards the outer wall of the drive shaft along the direction from the oil filling pipe to the oil storage chamber, so as to facilitate the injection of lubricating oil from the oil filling pipe into the oil storage chamber.

[0019] The present invention is further configured such that both ends of the connecting channel are connected to the edges of the two oil storage chambers, and the connecting channel corresponds to the connection point between the oil delivery channel and the oil storage chamber, so as to form a communicating vessel, allowing the lubricating oil in the first oil storage chamber to smoothly enter the second oil storage chamber during refueling.

[0020] The present invention is further configured such that a sealing member is externally threaded to one end of the drive shaft near the turbine body, and the sealing member is provided with a plug that is inserted into the refueling pipe and seals the refueling pipe.

[0021] The present invention is further provided with an installation groove for placing the oil-immersed body on the outside of the installation section.

[0022] Compared with the prior art, the present invention provides a turbine shaft assembly that is easy to maintain, and has the following advantages:

[0023] 1. The drive shaft is equipped with an oil reservoir and an oil outlet for storing lubricating oil. The bearing is equipped with an oil injection hole, which can continuously lubricate the bearing to maintain its lubrication level and reduce energy loss caused by friction.

[0024] 2. The oil reservoir can store lubricating oil, and together with the oil immersion body, the lubricating oil is continuously and slowly injected into the bearing, eliminating the need for frequent lubrication maintenance of the turbine shaft assembly.

[0025] 3. The oil delivery channel adopts an inclined design, which facilitates the smooth entry of lubricating oil into the oil storage chamber during oil injection. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of the turbine shaft assembly for ease of maintenance;

[0027] Figure 2 This is a cross-sectional view of the drive shaft.

[0028] Figure 3 for Figure 2 A partial structural diagram of region A in the middle;

[0029] Figure 4 This is a schematic diagram of the drive shaft structure;

[0030] Figure 5 This is a schematic diagram of the closure component;

[0031] Figure 6 This is a schematic diagram of the bearing structure;

[0032] Figure 7 This is a schematic diagram of the drive shaft and the oil-immersed body.

[0033] In the diagram: 1. Drive shaft; 101. Mounting section; 102. Oil reservoir; 103. Oil outlet; 104. Oil filling pipe; 105. Oil delivery channel; 106. Connecting channel; 107. Mounting groove; 2. Turbine body; 3. Bearing; 301. Outer ring; 302. Inner ring; 303. Lubricating ball; 304. Oil filling hole; 4. Oil-immersed body; 5. Sealing component; 501. Sealing component. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0038] like Figure 1 As shown, a turbine shaft assembly that is easy to maintain includes a drive shaft 1, a turbine body 2, and a bearing 3. The turbine body 2 and the bearing 3 are both fixedly sleeved on the outside of the drive shaft 1 and cannot rotate relative to each other, so that the rotation of the turbine body 2 drives the drive shaft 1 to rotate.

[0039] Specifically, bearing 3 is used at the connection between drive shaft 1 and peripheral components to reduce the friction between them and reduce the energy loss caused by friction.

[0040] like Figure 2-4 As shown, the drive shaft 1 is provided with two mounting sections 101 for mounting the bearing 3. The bearing 3 includes an outer ring body 301, an inner ring body 302, and a lubricating ball 303 placed between the two. The outer ring body 301 is connected to an external component, and the inner ring body 302 is connected to the drive shaft 1. An oil injection hole 304 is provided on the inner ring body 302. An oil storage chamber 102 is provided inside the drive shaft 1. An oil outlet hole 103 is provided in the mounting section 101. An oil-immersing body 4 is provided between the mounting section 101 and the inner ring body 302. An mounting groove 107 for placing the oil-immersing body 4 is provided on the outside of the mounting section 101.

[0041] The oil-immersed body 4 can be made of sponge and is used to absorb, store and transfer lubricating oil.

[0042] The oil storage chamber 102 is located at the installation section 101, and a connecting channel 106 is provided between two adjacent oil storage chambers 102 to connect the two.

[0043] Specifically, the oil storage chambers 102 in the two mounting sections 101 form a communicating vessel structure. The lubricating oil in the oil storage chamber 102 enters the mounting groove 107 through the oil outlet 103, and the sponge of the oil-immersed body 4 is filled with lubricating oil. When the drive shaft 1 rotates, it is thrown out through the oil injection hole 304 to the space between the inner ring body 302 and the outer ring body 301 by centrifugal force, so as to lubricate the lubricating ball 303.

[0044] like Figure 2-3 As shown, a filler pipe 104 is provided on one end face of the drive shaft 1 near the turbine body 2, and an oil delivery channel 105 is provided inside the drive shaft 1 to connect the filler pipe 104 and the oil storage chamber 102.

[0045] The refueling pipe 104 is located at the center of the end face of the drive shaft 1 and is coaxial with the drive shaft 1. The oil delivery channel 105 is inclined and gradually slopes towards the outer wall of the drive shaft 1 along the direction from the refueling pipe 104 to the oil storage chamber 102. Both ends of the connecting channel 106 are connected to the two oil storage chambers 102 near the edge, and the connecting channel 106 corresponds to the connection point between the oil delivery channel 105 and the oil storage chamber 102.

[0046] Specifically, when injecting lubricating oil, first manually adjust the drive shaft 1 so that the connection between the oil delivery channel 105 and the oil storage chamber 102 is at the lowest end in the direction of gravity. At this time, the connecting pipe is also at the lowest end. The lubricating oil is injected through the filling pipe 104, enters the oil storage chamber 102 through the downward inclined oil delivery channel 105, and then enters another oil storage chamber 102 along the connecting pipe. When the oil level in the oil delivery pipe gradually approaches the opening of the filling pipe 104, the oil injection is stopped.

[0047] like Figure 1 and 5As shown, the end of the drive shaft 1 near the turbine body 2 is externally threaded with a sealing member 5, and the sealing member 5 is provided with a plug 501 that is inserted into the oil filling pipe 104 and seals the oil filling pipe 104.

[0048] Specifically, after the oil filling is closed, the sealing member 5 can be threaded onto the outside of the drive shaft 1, so that the sealing member 501 can be inserted into the oil filling pipe 104.

[0049] The oiling maintenance process for the turbine shaft assembly disclosed in the embodiments of this utility model is as follows:

[0050] First, remove the closure 5 by screwing it off. Then, manually adjust the drive shaft 1 so that the connection between the oil delivery channel 105 and the oil storage chamber 102 is at the lowest point in the direction of gravity. At this time, the connecting pipe is also at the lowest point. The lubricating oil is injected through the filling pipe 104, enters the oil storage chamber 102 through the downward inclined oil delivery channel 105, and then enters another oil storage chamber 102 along the connecting pipe. When the oil level in the oil delivery pipe gradually approaches the opening of the filling pipe 104, stop the oil injection and reinstall the closure 5 on the outside of the drive shaft 1 to seal the filling pipe 104.

[0051] Its lubrication principle is as follows:

[0052] The lubricating oil in the oil storage chamber 102 enters the mounting groove 107 through the oil outlet 103, and the sponge of the oil-immersed body 4 is fully soaked with lubricating oil. When the drive shaft 1 rotates, it is thrown out through the oil injection hole 304 by centrifugal force to the space between the inner ring body 302 and the outer ring body 301 to lubricate the lubricating ball 303.

[0053] In all the solutions mentioned above, although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A turbine shaft assembly that is easy to maintain, characterized in that, Includes a drive shaft (1), a turbine body (2), and a bearing (3), wherein, The turbine body (2) is fixedly sleeved on the outside of the drive shaft (1). The drive shaft (1) is provided with at least one mounting section (101) for mounting the bearing (3). The bearing (3) includes an outer ring body (301) connected to a peripheral component, an inner ring body (302) connected to a drive shaft (1), and a lubricating ball (303) located between the outer ring body (301) and the inner ring body (302), for movably connecting the drive shaft (1) to the peripheral component. The drive shaft (1) is provided with an oil storage chamber (102) for storing lubricating oil. The mounting section (101) is provided with an oil outlet (103) that connects the oil storage chamber (102) to the external space. An oil injection hole (304) is provided on the inner ring body (302) for introducing the lubricating oil discharged from the oil outlet (103) to the outer wall of the lubricating ball (303). An oil-immersed body (4) is provided between the mounting section (101) and the inner ring body (302) to introduce the lubricating oil discharged from the oil outlet (103) into the oil injection hole (304).

2. The easy-to-maintain turbine shaft assembly according to claim 1, characterized in that, The drive shaft (1) has a refueling pipe (104) on one end face near the turbine body (2), and an oil delivery channel (105) is provided inside the drive shaft (1) to connect the refueling pipe (104) and the oil storage chamber (102).

3. The easy-to-maintain turbine shaft assembly according to claim 2, characterized in that, The oil storage chamber (102) is located at the installation section (101), and the number of oil storage chambers (102) corresponds to the number of installation sections (101). A connecting channel (106) is provided between two adjacent oil storage chambers (102).

4. The easy-to-maintain turbine shaft assembly according to claim 3, characterized in that, The refueling pipe (104) is located at the center of the end face of the drive shaft (1), and the oil delivery channel (105) is inclined and gradually slopes towards the outer wall of the drive shaft (1) along the direction from the refueling pipe (104) to the oil storage chamber (102).

5. The easy-to-maintain turbine shaft assembly according to claim 4, characterized in that, Both ends of the connecting channel (106) are connected to the two oil storage chambers (102) near their edges, and the connecting channel (106) corresponds to the connection point between the oil delivery channel (105) and the oil storage chamber (102).

6. The easy-to-maintain turbine shaft assembly according to claim 4, characterized in that, The drive shaft (1) has a sealing member (5) connected to one end near the turbine body (2) by an external thread. The sealing member (5) is provided with a plug (501) that is inserted into the refueling pipe (104) and seals the refueling pipe (104).

7. The easy-to-maintain turbine shaft assembly according to claim 1, characterized in that, The mounting section (101) has an external mounting groove (107) for placing the oil-immersed body (4).

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