Eccentric block reversing structure

Abstract

The utility model discloses an eccentric block reversing structure, which relates to the technical field of eccentric block reversers and comprises a vibration motor upper shaft head, a movable connecting assembly is mounted on the outer side of the top end of the vibration motor upper shaft head, and the movable connecting assembly comprises a positioning disc, a deep groove ball bearing, a thrust ball bearing and an upper eccentric block. The positioning disc is installed on the outer side of the top end of an upper shaft head of the vibration motor, the upper eccentric block is installed on the outer side of the positioning disc, and the deep groove ball bearing and the thrust ball bearing are installed between the positioning disc and the upper eccentric block. When the motor rotates forwards (clockwise), the positioning shaft is combined with the second baffle and forms a 90-degree included angle with the lower eccentric block when reaching a three-o'clock position, so that normal operation of the vibrator can be guaranteed, and when the motor rotates backwards (anticlockwise), the positioning shaft is combined with the first baffle and forms a 90-degree included angle with the lower eccentric block when reaching a nine-o'clock position. Therefore, the effect of a commutator is achieved, and automatic forward and reverse rotation of the vibration motor is realized.

Description

Technical Field

[0001] This utility model relates to the field of eccentric block commutator technology, specifically to an eccentric block commutation structure. Background Technology

[0002] A vibratory motor has a set of adjustable eccentric blocks installed at both ends of the rotor shaft. It uses the centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks to obtain the excitation force. Vibratory motors can be classified into six types, including by starting and running mode and by running speed.

[0003] The existing vibratory finishing machine's power source, the vibratory motor, has upper and lower eccentric blocks that can only be adjusted manually at the factory, and the vibratory motor cannot automatically achieve forward and reverse rotation through the commutator.

[0004] In view of this, it is necessary to develop an eccentric block reversing structure that can enable the eccentric block to reverse direction, thus allowing the vibratory motor to automatically rotate in both directions. Utility Model Content

[0005] The purpose of this invention is to provide an eccentric block reversing structure to solve the technical problem mentioned in the background art that the upper and lower eccentric blocks of the vibratory motor can only be adjusted manually at the factory, and the forward and reverse rotation of the vibratory motor cannot be automatically achieved by the commutator.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an eccentric block reversing structure, comprising: an upper shaft head of a vibratory motor, wherein a movable connecting assembly is installed on the outer side of the top end of the upper shaft head of the vibratory motor, the movable connecting assembly comprising a positioning plate, a deep groove ball bearing, a thrust ball bearing and an upper eccentric block, the positioning plate being installed on the outer side of the top end of the upper shaft head of the vibratory motor, the upper eccentric block being installed on the outer side of the positioning plate, the deep groove ball bearing and the thrust ball bearing being installed between the positioning plate and the upper eccentric block, and the thrust ball bearing being located below the deep groove ball bearing.

[0007] Preferably, a motor shaft cover is installed on the top of the upper shaft head of the vibration motor, and an installation shaft is installed on the top of the motor shaft cover, with the installation shaft passing through the motor shaft cover and connecting to the upper shaft head of the vibration motor.

[0008] Preferably, an eccentric block bearing cover is installed on the top of the upper eccentric block, and the eccentric block bearing cover is located outside the motor shaft cover. A counterweight is installed on the top of the upper eccentric block.

[0009] Preferably, a bushing is installed on the top side of the positioning disk, and a positioning shaft is installed inside the bushing.

[0010] Preferably, a first baffle and a second baffle are respectively installed on the outer side of the positioning disk.

[0011] Preferably, the top of the motor shaft cover is symmetrically equipped with oil injection nozzles, the top of the motor shaft cover is provided with a threaded groove, a protective cylinder is installed inside the threaded groove, and the protective cylinder is located outside the oil injection nozzle. The bottom outer side of the protective cylinder is provided with an external thread that connects to the threaded groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In order to ensure the 90-degree angle between the upper and lower eccentric blocks in this utility model, a first baffle and a second baffle are installed on the left and right sides of the positioning plate, so that it can move within a 180-degree range. The upper eccentric block is equipped with a positioning shaft. When the motor rotates forward (clockwise), the positioning shaft engages with the second baffle and reaches the 3 o'clock position, forming a 90-degree angle with the lower eccentric block, which can ensure the normal operation of the vibratory motor. When the motor rotates in reverse (counterclockwise), the positioning shaft engages with the first baffle and reaches the 9 o'clock position, still forming a 90-degree angle with the lower eccentric block, thus achieving the effect of a commutator and realizing the automatic forward and reverse rotation of the vibratory motor.

[0014] 2. In this utility model, the grease nipple is used to add lubricating oil to the movable connecting assembly. The threaded groove provides space for the installation of the protective cylinder. The bottom of the protective cylinder is threadedly connected to the threaded groove through the external thread, so that the protective cylinder is installed on the outside of the grease nipple to protect the grease nipple and prevent it from being contaminated and blocked, which would affect the addition of lubricating oil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the upper eccentric block structure of this utility model;

[0017] Figure 3 For the present utility model Figure 1 Schematic diagram of the structure at point A in the middle;

[0018] Figure 4 This is a schematic diagram of the protective cylinder structure of this utility model.

[0019] In the diagram: 1. Upper shaft head of the vibratory motor; 2. Positioning plate; 3. Motor shaft cover; 4. Mounting shaft; 5. Upper eccentric block; 6. Eccentric block bearing cover; 7. Counterweight plate; 8. Bushing; 9. Positioning shaft; 10. Deep groove ball bearing; 11. Thrust ball bearing; 12. First baffle; 13. Second baffle; 14. Oil injection nozzle; 15. Threaded groove; 16. Protective sleeve; 17. External thread. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Please see Figure 1 and Figure 2 An eccentric block reversing structure;

[0024] It includes: a vibratory motor upper shaft head 1 and a movable connecting assembly. The movable connecting assembly is installed on the outer side of the top of the vibratory motor upper shaft head 1. The movable connecting assembly includes a positioning plate 2, a deep groove ball bearing 10, a thrust ball bearing 11 and an upper eccentric block 5. The positioning plate 2 is installed on the outer side of the top of the vibratory motor upper shaft head 1. The upper eccentric block 5 is installed on the outer side of the positioning plate 2. The deep groove ball bearing 10 and the thrust ball bearing 11 are installed between the positioning plate 2 and the upper eccentric block 5, and the thrust ball bearing 11 is located below the deep groove ball bearing 10. A first baffle 12 and a second baffle 13 are respectively installed on the outer side of the positioning plate 2.

[0025] The upper shaft head 1 of the vibratory motor provides an installation position for the movable connection assembly. An upper eccentric block 5 is movably mounted on the outer top of the positioning disk 2 within the movable connection assembly via a deep groove ball bearing 10 and a thrust ball bearing 11, allowing the upper eccentric block 5 to rotate around the positioning disk 2. The deep groove ball bearing 10 and the thrust ball bearing 11 serve as a movable connection. The upper eccentric block 5, mounted on the upper shaft head 1 of the vibratory motor, causes the vibratory motor to vibrate when the upper eccentric block 5 rotates at high speed. To ensure a 90-degree angle between the upper and lower eccentric blocks, a special... The first baffle 12 and the second baffle 13 are installed on the left and right sides, allowing it to move within a 180-degree range. The upper eccentric block 5 is equipped with a positioning shaft 9. When the motor rotates forward (clockwise), the positioning shaft 9 engages with the second baffle 13, reaching the 3 o'clock position and forming a 90-degree angle with the lower eccentric block, which ensures the normal operation of the vibrator. When the motor rotates in reverse (counterclockwise), the positioning shaft 9 engages with the first baffle 12, reaching the 9 o'clock position and still forming a 90-degree angle with the lower eccentric block, thus achieving the effect of a commutator and realizing the automatic forward and reverse rotation of the vibratory motor.

[0026] Please see Figure 1 , Figure 3 and Figure 4 An eccentric block reversing structure;

[0027] A motor shaft cover 3 is installed on the top of the upper shaft head 1 of the vibratory motor, and an installation shaft 4 is installed on the top of the motor shaft cover 3. The installation shaft 4 passes through the motor shaft cover 3 and connects to the upper shaft head 1 of the vibratory motor. An eccentric block bearing cover 6 is installed on the top of the upper eccentric block 5, and the eccentric block bearing cover 6 is located outside the motor shaft cover 3. A counterweight plate 7 is installed on the top of the upper eccentric block 5. A bushing 8 is installed on the top of one side of the positioning plate 2. A positioning shaft 9 is installed inside the bushing 8. Oil injection nozzles 14 are symmetrically installed on the top of the motor shaft cover 3. A threaded groove 15 is opened on the top of the motor shaft cover 3. A protective cylinder 16 is installed inside the threaded groove 15, and the protective cylinder 16 is located outside the oil injection nozzle 14. An external thread 17 connected to the threaded groove 15 is opened on the bottom outer side of the protective cylinder 16.

[0028] The motor shaft cover 3 is fixed to the eccentric block bearing cover 6 by bolts, serving as a barrier and seal. The counterweight 7 is used to increase the weight of the upper eccentric block 5. The number of counterweights 7 can be adjusted according to the vibration magnitude. The grease nipple 14 is used to add lubricating oil to the movable connection assembly. The threaded groove 15 provides space for the installation of the protective cylinder 16. The bottom of the protective cylinder 16 is threadedly connected to the threaded groove 15 through the external thread 17, so that the protective cylinder 16 is installed on the outside of the grease nipple 14 to protect the grease nipple 14 and prevent it from being contaminated and blocked, which would affect the addition of lubricating oil.

[0029] Working principle: The lower eccentric block of the vibratory motor is fixed at the 0 point and remains stationary. The upper eccentric block 5 is used to adjust the angle between the upper and lower eccentric blocks. The projections of the upper and lower eccentric blocks on the horizontal plane form an angle, which is generally 90°. When the angle between the upper and lower eccentric blocks is greater than 90°, the combined vibration force decreases, and vice versa.

[0030] Using the upper shaft head 1 of the vibratory motor as a reference, a positioning plate 2 is installed. The upper eccentric block 5 can rotate freely around the positioning plate 2 via a thrust ball bearing 11 and a deep groove ball bearing 10. To ensure a 90-degree angle between the upper and lower eccentric blocks, a first baffle 12 and a second baffle 13 are installed on the left and right sides of the positioning plate 2, allowing it to move within a 180-degree range. The upper eccentric block 5 is equipped with a positioning shaft 9. When the motor rotates clockwise, the positioning shaft 9 engages with the second baffle 13, reaching the 3 o'clock position and forming a 90-degree angle with the lower eccentric block, ensuring the normal operation of the vibratory motor. When the motor rotates counterclockwise, the positioning shaft 9 engages with the first baffle 12, reaching the 9 o'clock position and still forming a 90-degree angle with the lower eccentric block, thus achieving the effect of a commutator and realizing the automatic forward and reverse rotation of the vibratory motor.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An eccentric block reversing structure, characterized in that, Includes: a vibratory motor upper shaft head (1), on the outer side of the top of the vibratory motor upper shaft head (1) is a movable connecting assembly, the movable connecting assembly includes a positioning plate (2), a deep groove ball bearing (10), a thrust ball bearing (11) and an upper eccentric block (5), the positioning plate (2) is installed on the outer side of the top of the vibratory motor upper shaft head (1), the upper eccentric block (5) is installed on the outer side of the positioning plate (2), the deep groove ball bearing (10) and the thrust ball bearing (11) are installed between the positioning plate (2) and the upper eccentric block (5), and the thrust ball bearing (11) is located below the deep groove ball bearing (10).

2. The eccentric block reversing structure according to claim 1, characterized in that: The top of the upper shaft head (1) of the vibration motor is equipped with a motor shaft cover (3), and the top of the motor shaft cover (3) is equipped with an installation shaft (4), and the installation shaft (4) passes through the motor shaft cover (3) and connects to the upper shaft head (1) of the vibration motor.

3. The eccentric block reversing structure according to claim 1, characterized in that: An eccentric block bearing cover (6) is installed on the top of the upper eccentric block (5), and the eccentric block bearing cover (6) is located outside the motor shaft cover (3). A counterweight plate (7) is installed on the top of the upper eccentric block (5).

4. The eccentric block reversing structure according to claim 1, characterized in that: A bushing (8) is installed on the top of one side of the positioning disk (2), and a positioning shaft (9) is installed inside the bushing (8).

5. The eccentric block reversing structure according to claim 1, characterized in that: The positioning disk (2) is equipped with a first baffle (12) and a second baffle (13) on its outer side.

6. The eccentric block reversing structure according to claim 2, characterized in that: The top of the motor shaft cover (3) is symmetrically equipped with oil nozzles (14), and the top of the motor shaft cover (3) is provided with a threaded groove (15). A protective cylinder (16) is installed inside the threaded groove (15), and the protective cylinder (16) is located outside the oil nozzle (14). The bottom outer side of the protective cylinder (16) is provided with an external thread (17) that connects to the threaded groove (15).

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