High-stability compressor main shaft

Abstract

The utility model belongs to compressor main shaft technical field especially relates to a kind of high-stability compressor main shaft, including shaft body, and oil supply passage is set in the inside of shaft body, and the shaft journal is formed in the side close to input, wherein, oil groove is set on the shaft journal, and oil groove and oil supply passage are communicated by setting first through-hole, and self-opening and closing member is installed in first through-hole, for opening first through-hole when main shaft starts, and closing first through-hole when main shaft stops;By setting oil groove and oil supply passage on compressor main shaft, and communicating by first through-hole, not only oil groove can be used as oil supply chamber, but also can be used as oil storage chamber when main shaft stops, slow down lubricating oil natural loss, and self-opening and closing member is arranged in first through-hole, can open first through-hole to supply oil when main shaft starts, and close first through-hole when main shaft stops, further reduce the loss of lubricating oil, ensure the lubrication between main shaft and sliding bearing, improve stability and prolong service life.

Description

Technical Field

[0001] This utility model belongs to the field of compressor spindle technology, and in particular relates to a highly stable compressor spindle. Background Technology

[0002] The compressor spindle is the core transmission and support component of the compressor, responsible for transmitting power and supporting the rotating body. Its operational stability directly affects the compressor's efficiency.

[0003] In traditional compressor operation scenarios, the lubrication status of the mating surfaces of the main shaft journal and the sliding bearing has a significant impact on the rotational stability of the main shaft. The main shaft journal and the sliding bearing are fitted with a clearance. The lubricating oil on the mating surfaces will not only flow downwards due to gravity, but will also naturally leak out after prolonged use and shutdown. When the main shaft rotates without sufficient lubrication, it is prone to semi-dry friction or dry friction, which in turn causes the main shaft to vibrate. This vibration will not only aggravate the wear of the journal and bearing, but will also be transmitted to the entire compressor through the main shaft, reducing the compressor's operational stability and service life. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a highly stable compressor spindle, thereby ensuring lubrication during compressor spindle rotation, improving operational stability, and extending service life.

[0005] In view of this, the present invention provides a highly stable compressor spindle, comprising: The shaft body has an internal oil supply channel and a journal is formed on the side near the input end; The journal is provided with an oil groove, and the oil groove is connected to the oil supply channel by a first through hole. A self-opening and closing component is installed in the first through hole to open the first through hole when the spindle starts and close the first through hole when the spindle stops.

[0006] In the above technical solution, further: The oil groove extends in a spiral shape along the circumference of the shaft body on the surface of the shaft body; The first through hole is located at both ends of the oil tank.

[0007] In the above technical solution, further: There are 2-4 oil troughs, and they are evenly spaced around the circumference.

[0008] In the above technical solution, further: The oil groove has an arc-shaped cross-section along the radial direction, and chamfers are formed at both ends near the surface of the shaft.

[0009] In the above technical solution, further: The first through hole is opened radially and is tangent to the inner wall of the oil supply channel on the radial plane.

[0010] In the above technical solution, further: The self-opening and closing component includes a valve core, a spring, and a plug. When the shaft rotates, the valve core can compress the spring under centrifugal force and open the first through hole. The first through hole has a boss for cooperating with the valve core to close the first through hole, and the plug has a second through hole for connecting the first through hole and the oil groove.

[0011] In the above technical solution, further: The cross-section of the second through hole along its radial direction is not circular, and the plug is threadedly connected to the first through hole.

[0012] The beneficial effects of this utility model are as follows: 1. By opening an oil groove on the journal of the compressor spindle and opening an oil supply channel inside the spindle body, which is connected to the oil groove through a first through hole, and by installing a self-closing component in the first through hole, the oil groove can not only serve as an oil supply chamber, but also as an oil storage chamber when the spindle stops rotating, thus slowing down the natural loss of lubricating oil. The self-closing component can open the first through hole to supply oil when the spindle starts and close the first through hole when the spindle stops, further reducing the loss of lubricating oil, ensuring lubrication between the spindle and the sliding bearing, improving stability and extending service life.

[0013] 2. By extending the oil grooves spirally along the shaft surface and opening the first through holes at both ends of the oil grooves, the uniformity of lubrication between the journal and the sliding bearing can be ensured. At the same time, there are 2-4 oil grooves, which are equally spaced around the circumference, thus avoiding excessive impact on the structural strength of the shaft. When the shaft stops, even if one of the oil grooves is at the lowest position and cannot store oil, one oil groove can still be at the highest position and store oil.

[0014] 3. By using a valve core, spring, and plug as the self-opening and closing component, the valve core compresses the spring and opens the first through hole under the centrifugal force generated when the spindle rotates, ensuring the self-opening and closing effect and simplifying the structure. At the same time, the plug has a non-circular second through hole and a threaded connection between the plug and the first through hole, which not only ensures the conductivity between the first through hole and the oil groove after the plug is installed, but also facilitates the disassembly and assembly of the plug, spring, and valve core, improving convenience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 Side view; Figure 3 This is a utility model Figure 2 The broken view at point AA; Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle; The markings in the diagram are as follows: 1. Shaft body; 10. Journal; 2. Oil supply channel; 3. Oil groove; 30. Chamfer; 4. First through hole; 5. Self-opening and closing component; 50. Valve core; 51. Spring; 52. Plug; 53. Second through hole; 6. Boss. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] Example 1: This embodiment provides a highly stable compressor spindle, comprising: The shaft 1 has an internal oil supply channel 2 and a journal 10 is formed on the side near the input end; Among them, the journal 10 is provided with an oil groove 3, and the oil groove 3 is connected to the oil supply channel 2 through a first through hole 4. A self-opening and closing component 5 is installed in the first through hole 4 to open the first through hole 4 when the spindle starts and close the first through hole 4 when the spindle stops. Meanwhile, the method of supplying lubricating oil into the oil supply channel 2 is an existing mature technology that is widely used in many fields such as machinery manufacturing and automotive industry. For example, the coolant channel in the spindle of a machining center and the lubricating oil channel in the crankshaft of an engine are known to those skilled in the art through traditional methods, and will not be elaborated here.

[0018] As can be seen from this embodiment, by opening an oil groove 3 on the journal 10 of the compressor main shaft and opening an oil supply channel 2 inside the shaft body 1, and communicating with the oil groove 3 through the first through hole 4, and at the same time, setting a self-opening and closing component 5 in the first through hole 4, the oil groove 3 can not only serve as an oil supply chamber, but also as an oil storage chamber when the main shaft stops rotating, thus slowing down the natural loss of lubricating oil. Furthermore, when starting up again, it can bring more low-level lubricating oil to the high-level mating surface, ensuring the lubrication efficiency after a long period of shutdown. The self-opening and closing component 5 can open the first through hole 4 to supply oil when the spindle starts and close the first through hole 4 when the spindle stops, further reducing the loss of lubricating oil, ensuring lubrication between the spindle and the sliding bearing, improving stability and extending service life.

[0019] Example 2: This embodiment provides a highly stable compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features: The oil groove 3 extends in a spiral shape along the circumference of the shaft body 1 on the surface of the shaft body 1. The first through hole 4 is located at both ends of the oil groove 3.

[0020] As can be seen from this embodiment, by extending the oil groove 3 spirally along the shaft 1 on the surface of the shaft 1, and by opening the first through hole 4 at both ends of the oil groove 3, the uniformity of lubrication of the mating surfaces between the journal 10 and the sliding bearing can be ensured.

[0021] Example 3: This embodiment provides a highly stable compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features: There are 2-4 oil troughs, and they are evenly spaced around the circumference; Among them, there can be 4 oil tanks.

[0022] As can be seen from this embodiment, by setting 2-4 oil grooves 3 and opening them at equal intervals around the circumference, the structural strength of the shaft 1 can be avoided. Furthermore, when the shaft 1 stops, even if one of the oil grooves 3 is at the lowest position and cannot store oil, it can still be ensured that one of the oil grooves 3 is at the highest position and can store oil.

[0023] Example 4: This embodiment provides a highly stable compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features: The oil groove 3 has an arc-shaped cross section along the radial direction, and chamfers 30 are formed at both ends near the surface of the shaft 1.

[0024] As can be seen from this embodiment, by setting the radial cross section of the oil groove 3 to be arc-shaped, the stress concentration points caused by the opening of the oil groove 3 can be reduced, and the impact on the structural strength of the shaft 1 can be reduced. Furthermore, the two ends of the oil groove 3 near the surface of the shaft 1 are chamfered 30 to avoid the formation of sharp edges on the surface of the shaft 1 due to the processing of the oil groove 3, thus avoiding increased wear. At the same time, the chamfer 30 makes it easier for the lubricating oil to be thrown from the oil groove 3 to the mating surface between the shaft 1 and the sliding bearing under the action of centrifugation, and to form an oil film as the shaft 1 rotates.

[0025] Example 5: This embodiment provides a highly stable compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features: The first through hole 4 is opened radially and is tangent to the inner wall of the oil supply channel 2 on the radial plane.

[0026] As can be seen from this embodiment, by setting the first through hole 4 tangentially to the inner wall of the oil supply channel 2 on the radial plane, it is convenient for the lubricating oil in the oil supply channel 2 to be thrown out through the first through hole 4 under the promotion of centrifugal force, so as to ensure the lubrication effect and stability.

[0027] Example 6: This embodiment provides a highly stable compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features: The self-opening and closing component 5 includes a valve core 50, a spring 51 and a plug 52, and when the shaft 1 rotates, the valve core 50 can compress the spring 51 under centrifugal force and open the first through hole 4. The first through hole 4 has a boss 6 formed inside, which is used to cooperate with the valve core 50 to close the first through hole 4, and the plug 52 has a second through hole 53 for connecting the first through hole 4 and the oil groove 3.

[0028] As can be seen from this embodiment, by using a valve core 50, a spring 51, and a plug 52 for the self-opening and closing component 5, the valve core 50 compresses the spring 51 and opens the first through hole 4 under the centrifugal force generated when the main shaft rotates, ensuring the self-opening and closing effect and having a simple structure. At the same time, the boss 6 facilitates the formation of an oil passage between the first through hole 4 and the valve core 50, which not only ensures that the valve core 50 and the boss 6 cooperate to close the first through hole 4, but also ensures the conduction between the first through hole 4 and the second through hole 53 after the valve core 50 moves away from the boss 6 due to centrifugal force. The second through hole 53 on the plug 52 facilitates the conduction between the first through hole 4 and the oil groove 3.

[0029] Example 7: This embodiment provides a highly stable compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features: The cross-section of the second through hole 53 along its radial direction is not circular, and the plug 52 is threadedly connected to the first through hole 4.

[0030] As can be seen from this embodiment, by making the second through hole 53 on the plug 52 non-circular in its radial cross section, the second through hole 53 can not only serve as a channel between the first through hole 4 and the oil groove 3, but also facilitate disassembly with tools, thus improving convenience. Specifically, the non-circular shape can be a regular hexagon, a regular triangle, or a regular quadrilateral, which is easy to adapt to commonly used wrenches and tools. It can also be an elliptical shape, etc., which can be disassembled and assembled with special wrenches to avoid safety hazards caused by unauthorized disassembly and assembly.

[0031] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A highly stable compressor spindle, characterized in that, include: The shaft (1) has an oil supply channel (2) inside and a journal (10) is formed on the side near the input end. The journal (10) is provided with an oil groove (3), and the oil groove (3) is connected to the oil supply channel (2) by opening a first through hole (4). A self-opening and closing component (5) is installed in the first through hole (4) for opening the first through hole (4) when the spindle starts and closing the first through hole (4) when the spindle stops.

2. The high-stability compressor spindle according to claim 1, characterized in that: The oil groove (3) extends in a spiral shape along the circumference of the shaft (1) on the surface of the shaft (1); The first through hole (4) is located at both ends of the oil groove (3).

3. The high-stability compressor spindle according to claim 2, characterized in that: There are 2-4 oil troughs (3), and they are opened at equal intervals around the circumference.

4. The high-stability compressor spindle according to claim 2, characterized in that: The oil groove (3) has an arc-shaped cross section along the radial direction, and chamfers (30) are formed at both ends near the surface of the shaft (1).

5. The high-stability compressor spindle according to claim 1, characterized in that: The first through hole (4) is opened radially and is tangent to the inner wall of the oil supply channel (2) on the radial plane.

6. The high-stability compressor spindle according to claim 1, characterized in that: The self-opening and closing component (5) includes a valve core (50), a spring (51) and a plug (52), and when the shaft (1) rotates, the valve core (50) can compress the spring (51) under centrifugal force and open the first through hole (4). The first through hole (4) has a boss (6) formed inside, which is used to cooperate with the valve core (50) to close the first through hole (4), and the plug (52) has a second through hole (53) for connecting the first through hole (4) and the oil groove (3).

7. The high-stability compressor spindle according to claim 6, characterized in that: The second through hole (53) has a non-circular cross section along its radial direction, and the plug (52) is threadedly connected to the first through hole (4).

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