Impact resistant compressor main shaft

Abstract

The utility model belongs to the main shaft technical field especially relates to a kind of impact-resistant compressor main shaft, main shaft and rotor shaft adopt coaxial arrangement mode, ensure that the concentricity of both is consistent in transmission process, avoid the vibration and impact load concentration caused by eccentricity, the outer tooth part of one end of main shaft close to rotor shaft is integrally formed, the mounting hole is set up to the end of rotor shaft close to main shaft along the axial direction, the inner wall of mounting hole is processed to form the inner tooth part of the adaptation of outer tooth part, outer tooth part and inner tooth part are mutually engaged, realize the power transmission and circumferential positioning between main shaft and rotor shaft, main shaft and rotor shaft are detachably connected by two groups of connecting components, two groups of connecting components are symmetrically arranged, ensure that the connection stress is uniform, improve the stability of overall structure, also facilitate the disassembly and maintenance of main shaft and rotor shaft, solve the problem of high maintenance cost of integrally formed structure.

Description

Technical Field

[0001] This utility model belongs to the field of spindle technology, and in particular relates to an impact-resistant compressor spindle. Background Technology

[0002] The compressor spindle is the core transmission component in the compressor's operation, playing a crucial role in transmitting power and driving the rotor's rotation. During compressor operation, the spindle must withstand high-frequency vibrations, instantaneous impact loads, and torque from high-speed rotation over extended periods. Its structural stability and impact resistance directly affect the compressor's operating efficiency and service life. Existing compressor spindles mostly employ a one-piece molding structure or a simple flange connection structure: while the one-piece molding structure offers greater overall rigidity, it suffers from high processing difficulty and transportation costs, and any partial damage requires replacement of the entire spindle, resulting in extremely high maintenance costs; traditional detachable structures such as flange connections often suffer from insufficient connection strength and poor centering accuracy, making them prone to relative displacement or loosening under impact loads, leading to spindle transmission failure. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing an impact-resistant compressor spindle, thereby resolving the issues raised in the background section.

[0004] In view of this, the present invention provides an impact-resistant compressor spindle; The rotor shaft is coaxially arranged with the main shaft. The main shaft has an external toothed portion at one end near the rotor shaft, and the rotor shaft has a mounting hole at one end near the main shaft, with an internal toothed portion that matches the external toothed portion inside the mounting hole. The connecting components allow for a detachable connection between the main shaft and the rotor shaft via two sets of connecting components.

[0005] In the above technical solution, the connecting component further includes: Support components: Two support components are arranged opposite to each other on the outer surfaces of the main shaft and the rotor shaft; A connecting plate is attached to the top of the two supporting members; Each support member has two fixing holes through its upper surface. The connecting plate has mounting holes that match the fixing holes. The connecting plate is detachably connected between the two support members by fasteners passing through the mounting holes and fixing holes.

[0006] In the above technical solution, the support component is further shaped like an n.

[0007] Furthermore, in the above technical solution, grooves are provided on both sides of the central area of ​​the connecting plate.

[0008] In the above technical solution, the external tooth portion further includes a plurality of external teeth evenly arranged circumferentially along the main shaft; The internal teeth include multiple internal teeth evenly arranged along the circumference of the mounting hole, and the internal teeth mesh with the external teeth.

[0009] In the above technical solution, furthermore, lubrication grooves are provided on both sides of the external teeth.

[0010] In the above technical solution, a blind hole is further provided on the side of the rotor shaft away from the main shaft.

[0011] In the above technical solution, further, the blind hole includes a middle blind hole, a front blind hole and a rear blind hole that are interconnected. The middle blind hole and the rear blind hole are both cylindrical. The inner diameter of the front blind hole gradually decreases from left to right, and the front end of the front blind hole is an arc surface. There is a front transition blind hole between the middle blind hole and the front blind hole, and the inner diameter of the front transition blind hole gradually decreases from left to right; There is a rear transition blind hole between the middle blind hole and the rear blind hole, and the inner diameter of the rear transition blind hole gradually increases from left to right.

[0012] In the above technical solution, furthermore, an oil inlet groove communicating with the internal gear is provided on one side of the rotor shaft, and an oil filling plug is provided on the oil inlet groove.

[0013] Furthermore, in the above technical solution, a sealing ring is provided between the main shaft and the rotor shaft.

[0014] The beneficial effects of this utility model are as follows: 1. The external and internal teeth mesh with each other to achieve power transmission and circumferential positioning between the spindle and the rotor shaft. Compared with traditional key or flange connections, the meshing of the teeth to transmit power has a larger contact area and more uniform force distribution, which can effectively disperse impact loads and improve the impact resistance of the spindle.

[0015] 2. The spindle and rotor shaft are detachably connected by two sets of connecting components. The two sets of connecting components are symmetrically arranged to ensure uniform stress on the connection, improve the stability of the overall structure, and facilitate the disassembly and maintenance of the spindle and rotor shaft, thus solving the problem of high maintenance costs of the one-piece molded structure.

[0016] 3. A blind hole is provided on the side of the rotor shaft away from the main shaft, which can reduce the weight of the rotor shaft, reduce the inertial force during the rotation of the main shaft, reduce vibration and impact loads, and improve the running stability and rotation accuracy of the main shaft. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3This is a structural cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the main shaft structure of this utility model; Figure 5 This is a utility model Figure 4 A magnified view of a section at point A in the middle; The markings in the diagram are as follows: 1-Main shaft, 2-Rotor shaft, 3-External gear, 4-Internal gear, 5-Support member, 6-Connecting plate, 7-Fixing hole, 8-Mounting hole, 9-Fastener, 10-Groove, 11-Mounting hole, 12-External gear, 13-Internal gear, 14-Lubrication groove, 15-Blind hole, 16-Intermediate blind hole, 17-Front blind hole, 18-Rear blind hole, 19-Front transition blind hole, 20-Rear transition blind hole, 21-Oil plug, 22-Sealing ring. Detailed Implementation

[0018] 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.

[0019] Example 1: This embodiment provides an impact-resistant compressor spindle, comprising: Spindle 1; Rotor shaft 2 is arranged coaxially with main shaft 1; Among them, the main shaft 1 has an external tooth 3 at one end near the rotor shaft 2, and the rotor shaft 2 has a mounting hole 11 at one end near the main shaft 1, and an internal tooth 4 that matches the external tooth 3 is formed in the mounting hole 11. The main shaft 1 and the rotor shaft 2 are detachably connected by two sets of connecting components.

[0020] As can be seen in this embodiment, the main shaft 1 and the rotor shaft 2 are arranged coaxially to ensure that their concentricity is consistent during transmission, avoiding the concentration of vibration and impact loads caused by eccentricity. The end of the main shaft 1 near the rotor shaft 2 is integrally formed with an external tooth 3, and the end of the rotor shaft 2 near the main shaft 1 is provided with an axially formed mounting hole 11. The inner wall of the mounting hole 11 is machined to form an internal tooth 4 that matches the external tooth 3. The external tooth 3 and the internal tooth 4 mesh with each other to realize the power transmission and circumferential positioning between the main shaft 1 and the rotor shaft 2. Compared with the traditional key connection or flange connection, the tooth meshing power transmission method has a larger contact area and more uniform force distribution, which can effectively disperse impact loads and improve the impact resistance of the main shaft. The main shaft 1 and the rotor shaft 2 are detachably connected by two sets of connecting components. The two sets of connecting components are symmetrically arranged to ensure uniform force distribution, improve the stability of the overall structure, and facilitate the disassembly and maintenance of the main shaft 1 and the rotor shaft 2, solving the problem of high maintenance cost of the integrally formed structure.

[0021] Example 2: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0022] The connection components include: Support members 5: Two support members 5 are provided opposite to the outer surfaces of the main shaft 1 and the rotor shaft 2; A connecting plate 6 is attached to the top of the two supporting members 5; Each support member 5 has two fixing holes 7 through it on its upper surface. The connecting plate 6 has mounting holes 8 that are adapted to the fixing holes 7. The connecting plate 6 is detachably connected between the two support members 5 by fasteners 9 passing through the mounting holes 8 and fixing holes 7.

[0023] As can be seen in this embodiment, two support members 5 are arranged opposite to each other on the outer surfaces of the main shaft 1 and the rotor shaft 2. The two support members 5 are respectively fixed to the outer surfaces of the main shaft 1 and the rotor shaft 2 by welding or interference fit, etc., to provide installation support for the connecting plate 6. The connecting plate 6 is attached to the top of the two opposite support members 5. The length of the connecting plate 6 is adapted to the distance between the two support members 5 to ensure that it can cover the top of the two support members 5 at the same time. Two fixing holes 7 are opened through the upper surface of each support member 5 to ensure that the connection points between the connecting plate 6 and the support member 5 are evenly distributed, avoiding local stress concentration and further enhancing the connection stability. The position of the connecting plate 6 corresponding to the fixing holes 7 is... The connecting plate 6 is provided with mounting holes 8, the diameter of which is matched with the diameter of fixing holes 7. Fasteners 9, which can be bolts and nuts, pass through the mounting holes 8 on the connecting plate 6 and the fixing holes 7 on the support 5, so that the connecting plate 6 can be detachably connected between the two support 5, thereby realizing the fastening connection between the main shaft 1 and the rotor shaft 2. The combined structure of the support 5 and the connecting plate 6 forms a stable frame connection. Compared with a single bolt connection, it can effectively distribute the force on the connection part and improve the impact resistance of the connection structure. Each support 5 is provided with two fixing holes 7, and fasteners 9 are used to realize the detachable connection, which makes it easy to quickly separate the main shaft 1 and the rotor shaft 2 when the main shaft fails or needs maintenance, reducing maintenance difficulty and downtime.

[0024] Example 3: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0025] The support member 5 is n-shaped.

[0026] As can be seen from this embodiment, the support member 5 is n-shaped. The n-shaped support member 5 consists of a horizontal top plate and two vertical side plates. The two vertical side plates are welded and fixed to the outer surface of the main shaft 1 or the rotor shaft 2, respectively. The horizontal top plate is used to support the connecting plate 6, and a fixing hole 7 is opened on the horizontal top plate. The n-shaped support member 5 has good structural rigidity and anti-deformation ability, and can maintain its own shape stability when subjected to impact load, avoiding loosening of the connection due to deformation of the support member 5.

[0027] Example 4: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0028] The connecting plate 6 has grooves 10 on both sides of the central area.

[0029] As can be seen from this embodiment, grooves 10 are provided on both sides of the central area of ​​the connecting plate 6. The design of the grooves 10 can reduce the stress concentration in the central area of ​​the connecting plate 6. When the compressor operates and generates vibration or impact, the grooved part can generate a small amount of elastic deformation to absorb some of the impact energy and prevent the connecting plate 6 from breaking due to stress concentration.

[0030] Example 5: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0031] The external toothed part 3 includes a plurality of external teeth 12 evenly arranged circumferentially along the main shaft 1; The internal tooth section 4 includes a plurality of internal teeth 13 evenly arranged circumferentially along the mounting hole 11, and the internal teeth 13 mesh with the external teeth 12.

[0032] As can be seen in this embodiment, the external gear section 3 is composed of multiple external teeth 12 evenly arranged around the circumference of the main shaft 1. The tooth profile of the external teeth 12 adopts an involute tooth profile, and the tooth width is adapted to the end thickness of the main shaft 1. The tip circle diameter of the multiple external teeth 12 is adapted to the inner diameter of the mounting hole 11. The internal gear section 4 is composed of multiple internal teeth 13 evenly arranged around the circumference of the mounting hole 11. The tooth profile of the internal teeth 13 meshes with the tooth profile of the external teeth 12. The number of internal teeth 13 is the same as the number of external teeth 12, ensuring that the two can mesh and transmit precisely. The evenly arranged external teeth 12 and internal teeth 13 realize multi-point meshing transmission. Compared with a single key connection, the power transmission is more stable, which can effectively disperse impact loads and torques, and improve the impact resistance and transmission efficiency of the main shaft.

[0033] Example 6: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0034] Lubrication grooves 14 are provided on both sides of the external tooth 12.

[0035] As can be seen in this embodiment, lubrication grooves 14 are provided on both sides of the external tooth 12. The lubrication grooves 14 are opened along the length of the external tooth 12. The cross-section of the lubrication groove is semi-circular or trapezoidal, which can store lubricating oil. During the rotation of the spindle, the lubricating oil can form a stable oil film between the meshing tooth surfaces, reducing the friction and wear between the external tooth 12 and the internal tooth 13, reducing energy loss. The presence of the oil film can absorb some impact energy, alleviate the impact load during tooth meshing, improve the impact resistance of the teeth, and avoid damage such as pitting and scuffing on the tooth surface.

[0036] Example 7: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0037] A blind hole 15 is provided on the side of the rotor shaft 2 away from the main shaft 1.

[0038] As can be seen from this embodiment, a blind hole 15 is provided on the side of the rotor shaft 2 away from the main shaft 1, which can reduce the weight of the rotor shaft 2, reduce the inertial force during the rotation of the main shaft, reduce vibration and impact loads, and improve the running stability and rotation accuracy of the main shaft.

[0039] Example 8: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The blind hole 15 includes a central blind hole 16, a front blind hole 17 and a rear blind hole 18 that are connected. The central blind hole 16 and the rear blind hole 18 are both cylindrical. The inner diameter of the front blind hole 17 gradually decreases from left to right, and the front end of the front blind hole 17 is an arc surface. Between the intermediate blind hole 16 and the front blind hole 17 there is a front transition blind hole 19, the inner diameter of which gradually decreases from left to right; Between the intermediate blind hole 16 and the rear blind hole 18 is a rear transition blind hole 20, the inner diameter of which gradually increases from left to right.

[0041] As can be seen in this embodiment, the weight-reducing blind hole 22 includes a communicating intermediate blind hole 12, a front blind hole 13, and a rear blind hole 14. The intermediate blind hole 12 and the rear blind hole 14 are both cylindrical, making them easy to process. The inner diameter of the front blind hole 13 gradually decreases from left to right, and the front end of the front blind hole 13 is an arc surface, which is compatible with the drilling method of the drill bit and makes it easy to process. There is a front transition blind hole 15 between the intermediate blind hole 12 and the front blind hole 13. The inner diameter of the front transition blind hole 15 gradually decreases from left to right. The setting of the front transition blind hole 15 allows the intermediate blind hole 12 and the front blind hole 13 to be better connected, ensuring the connection strength and preventing breakage at this point. There is a rear transition blind hole 16 between the intermediate blind hole 12 and the rear blind hole 14. The inner diameter of the rear transition blind hole 16 gradually increases from left to right. The setting of the rear transition blind hole 16 allows the intermediate blind hole 12 and the rear blind hole 14 to be better connected, ensuring the connection strength and preventing breakage at this point.

[0042] Example 9: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] An oil inlet groove communicating with the internal gear part 4 is provided on one side of the rotor shaft 2, and an oil filling plug 21 is provided on the oil inlet groove.

[0044] As can be seen from this embodiment, the oil inlet groove is opened radially along the rotor shaft 2, with one end connected to the internal toothed portion 4 of the inner wall of the mounting hole 11, and the other end penetrating the outer surface of the rotor shaft 2; the oil plug 21 is installed at the outer end of the oil inlet groove by means of threaded connection, which is used to seal the oil inlet groove and prevent lubricating oil leakage. Lubricating oil can be replenished without separating the main shaft 1 and the rotor shaft 2, which reduces the difficulty of maintenance. Regularly replenishing lubricating oil through the oil inlet groove can further extend the service life of the teeth, improve the impact resistance and overall reliability of the main shaft, and is suitable for compressor equipment that operates continuously for a long time.

[0045] Example 10: This embodiment provides an impact-resistant compressor spindle, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] A sealing ring 22 is provided between the main shaft 1 and the rotor shaft 2.

[0047] As can be seen in this embodiment, a sealing ring 22 is provided between the main shaft 1 and the rotor shaft 2. The sealing ring 22 is made of an oil-resistant and high-temperature-resistant elastic material, such as fluororubber or nitrile rubber. The sealing ring 22 can effectively seal the gap between the main shaft 1 and the rotor shaft 2, prevent the lubricating oil in the meshing area from leaking, and prevent external dust and impurities from entering the meshing area, ensuring lubrication effect and tooth cleanliness. In addition, the sealing ring 22 made of elastic material has a certain buffering effect, which can absorb some of the small vibrations generated during the rotation of the main shaft, alleviate the impact of impact load on the connection parts, and further improve the running stability of the main shaft.

[0048] 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. An impact-resistant compressor spindle, characterized in that, include: Main spindle (1); Rotor shaft (2), which is coaxially arranged with main shaft (1); Wherein, the main shaft (1) has an external tooth (3) at one end near the rotor shaft (2), and the rotor shaft (2) has a mounting hole (11) at one end near the main shaft (1), and an internal tooth (4) adapted to the external tooth (3) is formed in the mounting hole (11). The main shaft (1) and the rotor shaft (2) are detachably connected by two sets of connecting components.

2. The impact-resistant compressor spindle according to claim 1, characterized in that, The connection component includes: Support member (5): Two support members (5) are provided opposite to the outer surfaces of the main shaft (1) and the rotor shaft (2); A connecting plate (6) is attached to the top of the two support members (5). Each of the support members (5) has two fixing holes (7) through its upper surface. The connecting plate (6) has mounting holes (8) that are adapted to the fixing holes (7). The connecting plate (6) is detachably connected between the two support members (5) by fasteners (9) passing through the mounting holes (8) and fixing holes (7).

3. The impact-resistant compressor spindle according to claim 2, characterized in that, The support member (5) is n-shaped.

4. The impact-resistant compressor spindle according to claim 3, characterized in that, The connecting plate (6) has grooves (10) on both sides of the central area.

5. The impact-resistant compressor spindle according to claim 1, characterized in that, The external toothed portion (3) includes a plurality of external teeth (12) evenly arranged circumferentially along the main shaft (1). The internal tooth portion (4) includes a plurality of internal teeth (13) evenly arranged circumferentially along the mounting hole (11), and the internal teeth (13) mesh with the external teeth (12).

6. The impact-resistant compressor spindle according to claim 5, characterized in that, Lubrication grooves (14) are provided on both sides of the external tooth (12).

7. The impact-resistant compressor spindle according to claim 1, characterized in that, A blind hole (15) is provided on the side of the rotor shaft (2) away from the main shaft (1).

8. The impact-resistant compressor spindle according to claim 7, characterized in that, The blind hole (15) includes a middle blind hole (16), a front blind hole (17) and a rear blind hole (18) that are connected. The middle blind hole (16) and the rear blind hole (18) are both cylindrical. The inner diameter of the front blind hole (17) gradually decreases from left to right, and the front end of the front blind hole (17) is an arc surface. Between the intermediate blind hole (16) and the front blind hole (17) there is a front transition blind hole (19), the inner diameter of which gradually decreases from left to right; Between the intermediate blind hole (16) and the rear blind hole (18) there is a rear transition blind hole (20), the inner diameter of which gradually increases from left to right.

9. The impact-resistant compressor spindle according to claim 1, characterized in that, The rotor shaft (2) has an oil inlet groove on one side that communicates with the internal gear (4), and an oil plug (21) is provided on the oil inlet groove.

10. The impact-resistant compressor spindle according to claim 1, characterized in that, A sealing ring (22) is provided between the main shaft (1) and the rotor shaft (2).

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