Rotor

Abstract

The utility model relates to a rotor, which comprises a rotating body, the rotating body comprises an insertion hole for inserting a rotating shaft, the insertion hole is provided with a key groove, the front side and the rear side of the insertion hole are provided with a front end cover and a rear end cover in a split mode, and the front end cover, the rotating body and the rear end cover are oppositely and fixedly arranged. The front end cover and the rear end cover both comprise protrusions protruding in the circumferential direction, counter bores used for being matched with the front end cover or the rear end cover are formed in the front end face and the rear end face of the rotating body, and a through hole allowing the rotating shaft to penetrate through and enter the inserting hole is formed in the front end cover. By adopting the technical scheme, the rotor is divided into three split structures, namely the rotating body, the front end cover and the rear end cover, and the material strength of the front end cover and the rear end cover is enhanced, so that the rotor can bear higher torque, the overall strength of the rotor is improved, and the rotor can be prevented from being damaged under the condition that the limit torque which can be borne by the materials of the front end cover and the rear end cover is not exceeded. And the whole rotor is prevented from slipping relative to the rotating shaft.

Description

Technical Field

[0001] The utility model belongs to the technical field of pumps, in particular to a rotor. Background Art

[0002] The rotor is a part of rotating machinery and is widely used in pumps, motors and other rotating equipment. The main function of the rotor is to generate rotational motion or convert energy.

[0003] Existing patent number CN216216155U discloses a rotor, a rotor shaft assembly and a disassembly tool for the rotor shaft assembly. The rotor has a socket for inserting the rotor shaft. The rotor is formed with a receiving portion at the end of the socket. The receiving portion has a receiving groove and a connecting hole connected to the socket. The aperture of the connecting hole is larger than the aperture of the corresponding threaded hole at the end of the rotor shaft. The inner wall of the connecting hole is provided with an internal thread; the rotor shaft is inserted into the socket and assembled with the rotor.

[0004] However, the above solution has the following problems: the rotor shaft and the rotor are connected only through the jack. When the rotation torque of the rotor shaft is too large and the rotor strength is insufficient, slippage is likely to occur between the rotor shaft and the rotor. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the prior art, and to provide a rotor, which solves the problem that slippage between the rotor shaft and the rotor may easily occur when the rotation torque of the rotor shaft is too large and the rotor strength is insufficient.

[0006] The technical solution of the present utility model is as follows: a rotor includes a swivel, the swivel includes a socket for inserting a rotating shaft, the socket is provided with a keyway, and a front end cover and a rear end cover are separately provided on the front and rear sides of the socket, the front end cover, the swivel and the rear end cover are relatively fixedly arranged, the front end cover and the rear end cover both include protrusions that are raised in the circumferential direction, the front and rear end surfaces of the swivel are respectively provided with countersunk holes for adapting to the front end cover or the rear end cover, the front end cover is provided with a through hole for the rotating shaft to pass through and enter the socket, the swivel is made of plastic material, and the front end cover and the rear end cover are made of metal material.

[0007] By adopting the above technical solution, by dividing the rotor into three separate structures of the rotor, the front end cover and the rear end cover, the material strength of the front end cover and the rear end cover can be strengthened so that the rotor can withstand stronger torque, thereby increasing the overall strength of the rotor. Without exceeding the limit torque that the material of the front end cover and the rear end cover can withstand, it can be ensured that the rotor as a whole does not slip with the rotating shaft. In addition, the protrusions respectively arranged on the front end cover and the rear end cover, and the countersunk holes with corresponding protrusion shapes arranged on the front and rear end surfaces of the rotor, after the front end cover and the rear end cover are placed on the rotor, the front end cover and the rear end cover can drive the rotor to rotate, thereby strengthening the connection strength between the separate parts, and avoiding relative rotation between the separate parts affecting the overall rotation of the rotor when the shaft drives the front end cover and the rear end cover to rotate.

[0008] The present invention is further configured as follows: the rear end cover includes a plug-in portion inserted into the socket and a connecting through hole provided on the front end surface of the plug-in portion; an internal thread is provided on the inner wall of the connecting through hole 33; and the plug-in portion includes a mating plane for contacting the rotating shaft to avoid relative rotation.

[0009] By adopting the above-mentioned further arrangement, the connection strength between the rear end cover and the rotating body is enhanced by inserting the plug-in part into the socket, and a matching plane is provided on the plug-in part for contacting and matching with the rotating shaft. The rotating shaft can be processed to obtain a part that can be placed above the plug-in part and contact the matching plane to limit the relative rotation between the rotating shaft and the rear end cover, thereby strengthening the connection strength between the rotating shaft and the rear end cover, ensuring that the rotating shaft and the rear end cover do not rotate relative to each other during operation, effectively transmitting torque, and facilitating assembly and disassembly, and screwing a bolt into the connecting through hole to push the rotor out of the rotating shaft to achieve separation between the rotating shaft and the rotor. The structure is simple and the operation is convenient.

[0010] The present invention is further configured as follows: the front end cover and the rear end cover include a cover plate with a circular structure, and the protrusion is an arc structure that bulges outward from the outer circumference of the cover plate.

[0011] With the above-mentioned further arrangement, the protrusion of the arc structure can effectively increase the contact area between the front end cover and the rear end cover and the swivel respectively, and the force per unit contact area between the outer surface of the protrusion and the countersunk hole is smaller, so that the probability of relative sliding between the front end cover or the rear end cover and the swivel is lower, and a concave arc structure can be constructed between the protrusion of the arc structure and the cover plate of the circular structure, and the corresponding countersunk hole structure has a protrusion that cooperates with this concave part, thereby strengthening the rotation restriction between the swivel and the front end cover and the rear end cover respectively, further reducing the possibility of rotation, and making the torque transmission more stable.

[0012] A further configuration of the present invention is that the front end cover and the rear end cover each have at least two protrusions evenly distributed in the circumferential direction.

[0013] By adopting the above further arrangement, the center of gravity of the front cover and the rear cover coincides with their respective rotation centers, thereby preventing eccentricity from generating a large centrifugal force and avoiding the unbalanced force from affecting the rotating shaft and causing it to swing.

[0014] The present invention is further provided with bolts passing through the front cover, the rear cover and the swivel, and are locked with nuts to achieve fixed connection.

[0015] With the above further arrangement, bolts are passed through the front cover, swivel and rear cover and then locked with nuts to ensure that the front cover and rear cover are fixed on the swivel to prevent them from falling off, and the front cover and rear cover are relatively fixed.

[0016] The present invention is further provided with: the front end cover includes a countersunk surface for positioning and contacting the shoulder of the rotating shaft, and the through hole is provided with a keyway.

[0017] With the above-mentioned further setting, the shoulder of the rotating shaft can be pressed against the countersunk surface to achieve positioning, ensuring that the rotor is in the correct position of the rotating shaft. The keyway on the through hole can cooperate with the key of the rotating shaft to strengthen the connection strength between the rotating shaft and the front end cover, ensuring that there is no sliding between the rotating shaft and the front end cover during operation, effectively transmitting torque, and facilitating assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the overall structure of the front end cover in a specific embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the rear end cover in a specific embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the swivel in a specific embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the overall structure of the swivel from another perspective in a specific embodiment of the utility model.

[0024] In the figure: 1, swivel; 11, socket; 12, countersunk hole; 2, front cover; 21, through hole; 22, countersunk surface; 3, rear cover; 31, plug-in part; 32, mating plane; 33, connecting through hole; 4, protrusion. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in this embodiment with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being described. In the description of this utility model, "several" means at least two, such as two or three, unless otherwise specifically defined.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that technical personnel in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0029] like Figure 1-6 As shown, the rotor includes a swivel 1, a front end cover 2 and a rear end cover 3. The swivel 1 includes a socket 11 that passes through the front and rear end surfaces of the swivel 1 for inserting the shaft. The socket 11 has a keyway. The swivel 1, the front end cover 2 and the rear end cover 3 can be made of different materials. In this embodiment, the front end cover 2 and the rear end cover 3 are made of metal with higher strength, and the swivel 1 is made of plastic.

[0030] The front cover 2 and the rear cover 3 are separately arranged on the front and rear end surfaces of the swivel 1. The front cover 2 and the rear cover 3 both include a circular cover plate and a protrusion 4 protruding outward from the outer circumference of the cover plate.

[0031] The protrusion 4 is an arc-shaped structure with the outer surface of the cover plate part of the front end cover 2 or the rear end cover 3 protruding outward. The protrusion 4 increases the contact area between the front end cover 2 and the rear end cover 3 and the swivel 1, respectively, so that the force per unit contact area between the outer surface of the protrusion 4 and the countersunk hole 12 is smaller, so that the probability of relative sliding between the front end cover 2 or the rear end cover 3 and the swivel 1 is lower. Countersunk holes 12 for adapting to the front end cover 2 or the rear end cover 3 are provided on the front and rear end surfaces of the swivel 1, so that the protrusion 4 is stuck in the countersunk hole 12 and cannot rotate in the circumferential direction, so that the front end cover 2 and the rear end cover 3 are both stuck in the countersunk hole 12 and cannot rotate relative to each other.

[0032] The front end cover 2 includes a countersunk surface 22 for positioning the contact shoulder of the rotating shaft and a through hole 21 for the rotating shaft to pass through and enter the socket 11, and the through hole 21 is provided with a keyway; the rotating shaft shoulder can abut against the countersunk surface 22 to realize the positioning of the rotating shaft and the rotor, ensuring that the rotor is in the correct position of the rotating shaft, and the keyway on the through hole 21 can cooperate with the key of the rotating shaft to strengthen the connection strength between the rotating shaft and the front end cover 2, ensuring that there is no sliding between the rotating shaft and the front end cover 2 during operation, effectively transmitting torque, and facilitating assembly and disassembly.

[0033] The rear end cover 3 includes a plug-in portion 31 inserted into the socket 11 and a connecting through-hole 33 provided on the front end surface of the plug-in portion 31. The connecting through-hole 33 passes through the rear end cover 3. The plug-in portion 31 includes a mating surface 32 for contacting the rotating shaft. The plug-in portion 31 is inserted into the socket 11 to enhance the connection strength between the rear end cover 3 and the rotating body 1.

[0034] A mating plane 32 is provided on the plug-in portion 31 for contacting and mating with the rotating shaft. A portion that can be placed above the plug-in portion 31 can be processed on the rotating shaft and made to contact the mating plane 32, so that the rotating shaft can contact the mating plane 32 when rotating to limit relative rotation, thereby strengthening the connection strength between the rotating shaft and the rear end cover 3, ensuring that no sliding occurs between the rotating shaft and the rear end cover 3 during operation, effectively transmitting torque, and facilitating assembly and disassembly.

[0035] Both the front end cover 2 and the rear end cover 3 have at least two protrusions 4 evenly distributed in the circumferential direction. In this embodiment, preferably, both the front end cover 2 and the rear end cover 3 have three protrusions 4 evenly distributed in the circumferential direction, so that the center of gravity of the front end cover 2 and the rear end cover 3 coincides with the center of rotation, preventing eccentricity from generating a large centrifugal force and avoiding unbalanced force from affecting the rotating shaft and causing swinging.

[0036] The front end cover 2, the rear end cover 3 and the swivel 1 are relatively fixedly connected. Bolts are selected to pass through the front end cover 2, the swivel 1 and the rear end cover 3, and then they are tightened with nuts to ensure that the front end cover 2 and the rear end cover 3 are fixed on the swivel 1 to prevent them from falling off, thereby achieving relative fixation between the front end cover 2 and the rear end cover 3 and making them rotate synchronously.

[0037] An internal thread is provided on the inner wall of the connecting through hole 33, and a bolt can be screwed into the connecting through hole 33 to support the rotating shaft. After the bolt is continued to be rotated, the rotor moves relative to the bolt, thereby realizing the separation between the rotating shaft and the rotor. The overall structure is simple and easy to operate.

[0038] Specifically, by dividing the rotor into three parts: the rotor 1, the front end cover 2 and the rear end cover 3, and by strengthening the material strength of the front end cover 2 and the rear end cover 3, it is possible to withstand a stronger torque to increase the overall strength of the rotor. Without exceeding the limit torque that the material of the front end cover 2 and the rear end cover 3 can withstand, it can ensure that the rotor as a whole does not slip with the rotating shaft. Compared with replacing the rotor as a whole with a higher strength material, this solution has a lower cost. In addition, the protrusions 4 respectively provided on the front end cover 2 and the rear end cover 3, and the countersunk holes 12 corresponding to the shapes of the protrusions 4 provided on the front and rear end surfaces of the rotor 1, can prevent the front end cover 2 and the rear end cover 3 from rotating relative to each other when they are placed on the corresponding countersunk holes 12, thereby strengthening the connection strength between the three parts and preventing the three parts from rotating relative to each other when the rotating shaft drives the front end cover 2 and the rear end cover 3 to rotate, affecting the overall rotation of the rotor.

Claims

1. A rotor comprising a rotating body (1), wherein the rotating body (1) comprises a socket (11) for inserting a rotating shaft, wherein the socket (11) has a keyway, and is characterized in that: The front and rear sides of the socket (11) are separately provided with a front cover (2) and a rear cover (3); the front cover (2), the swivel (1) and the rear cover (3) are relatively fixedly arranged; the front cover (2) and the rear cover (3) both include protrusions (4) that are raised in the circumferential direction; the front and rear end surfaces of the swivel (1) are respectively provided with countersunk holes (12) for adapting to the front cover (2) or the rear cover (3); the front cover (2) is provided with a through hole (21) for allowing the rotating shaft to pass through and enter the socket (11).

2. The rotor according to claim 1, characterized in that The rear end cover (3) includes a plug-in portion (31) that can be plugged into the socket (11) and a connecting through hole (33) provided on the plug-in portion (31) and located on the inner end surface of the socket (11). The hole diameter of the connecting through hole (33) is smaller than the hole diameter of the socket (11), and an internal thread is provided on the inner wall of the connecting through hole (33).

3. The rotor according to claim 2, characterized in that The plug-in portion (31) includes a matching plane (32) for contact with the rotating shaft to avoid relative rotation.

4. The rotor according to claim 1, characterized in that The front end cover (2) and the rear end cover (3) comprise a cover plate with a circular structure, and the protrusion (4) is an arc structure that bulges outward from the outer circumference of the cover plate.

5. The rotor according to claim 1 or 4, characterized in that: The front end cover (2) and the rear end cover (3) each have at least two protrusions (4) evenly distributed in the circumferential direction.

6. The rotor according to claim 1, characterized in that Bolts are provided between the front end cover (2), the rear end cover (3) and the swivel (1) and are locked with nuts.

7. The rotor according to claim 1, characterized in that The front end cover (2) includes a countersunk surface (22) for positioning the contact shaft shoulder, and the through hole (21) is provided with a keyway.

8. The rotor according to claim 1, wherein: The rotating body (1) is made of plastic, and the front end cover (2) and the rear end cover (3) are made of metal.

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