Anti-loosening fastening structure of eccentric block of concrete vibrator

Abstract

The utility model discloses concrete vibrator eccentric block anti -loosening fastening structure, including with the fixed connection of drive motor output shaft drive shaft, the surface of drive shaft is equipped with the connecting bushing, the surface of connecting bushing is equipped with two eccentric blocks, the connecting position of eccentric block and connecting bushing is provided with fastening assembly, the fastening assembly includes the mounting hole of setting in the eccentric block surface, the side of mounting hole inner chamber is equipped with expansion joint, one side of eccentric block is provided with two bolts, and the bolt is connected with eccentric block screw thread. The utility model discloses the setting of lock fastening assembly makes connecting bushing steady installation in the surface of drive shaft, then under the use of fastening assembly cooperation, make eccentric block steady fastening in the surface of connecting bushing, thereby make the firm connection between eccentric block and drive shaft, can reach the purpose of convenient adjustment installation position and occlusal lock fast.

Description

Technical Field

[0001] This utility model belongs to the field of concrete processing technology, and in particular relates to the anti-loosening and fastening structure of the eccentric block of a concrete vibrator. Background Technology

[0002] A concrete aggregate conveying vibrator is a specialized piece of equipment used in the concrete production field. Its function is to keep aggregates (such as sand and stone) in a loose state during the conveying process through mechanical vibration, so as to avoid accumulation and blockage and promote uniform conveying of aggregates. It is usually installed on conveying equipment (such as conveyor belts, vibrating screens, feeders, etc.) and uses the kinetic energy generated by vibration to improve the flowability of aggregates and ensure the efficient operation of the conveying system.

[0003] Many screening machines use single bolts or welding to fix the eccentric blocks, which are prone to loosening under prolonged high-frequency vibration. Since the eccentric blocks need to be equipped with adjustment functions, the fixing method relies entirely on clamping. After long-term use, wear occurs at the connection between the eccentric block and the motor output shaft, resulting in a decrease in the synchronous rotation potential energy of the eccentric block and the output shaft, reducing the vibration amplitude, and easily causing damage to the motor output shaft, increasing maintenance costs. Therefore, it is necessary to provide a non-loosening fastening structure for the eccentric blocks of concrete vibrators. A bushing structure for transition is set between the motor output shaft and the eccentric block to reduce the possibility of damage to the motor. At the same time, anti-slip textures are set between the bushing structure and the eccentric block to increase the friction between the two and ensure synchronous rotation. Utility Model Content

[0004] The purpose of this invention is to provide a fastening structure for preventing the eccentric block of a concrete vibrator from loosening. A bushing structure for connection is set between the motor output shaft and the eccentric block to reduce the possibility of damage to the motor. At the same time, anti-slip texture is set between the bushing structure and the eccentric block to increase the friction between the two and ensure synchronous rotation, thereby solving the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a concrete vibrator eccentric block anti-loosening fastening structure, including a drive shaft fixedly connected to the output shaft of a drive motor; a connecting bushing is sleeved on the surface of the drive shaft, two eccentric blocks are sleeved on the surface of the connecting bushing, a fastening component is provided at the connection position between the eccentric blocks and the connecting bushing, the fastening component includes a mounting hole opened on the surface of the eccentric block, an expansion joint is opened on one side of the inner cavity of the mounting hole, two bolts are threaded through one side of the eccentric block, the bolts are threadedly connected to the eccentric block, and a locking component is provided in the inner cavity of the connecting bushing.

[0006] Preferably, the locking assembly includes two inserts, and both sides of the drive shaft are provided with external grooves adapted to the inserts, and both sides of the inner cavity of the connecting bushing are provided with internal grooves adapted to the inserts.

[0007] Preferably, two screws are threaded to both sides of the connecting bushing, and one end of the screw passes through the inner cavity of the insert and the outer groove in sequence and is threaded to the drive shaft.

[0008] Preferably, the inner wall of the mounting hole has a plurality of inner anti-slip vertical grooves, and the surface of the drive shaft has a plurality of outer anti-slip vertical grooves that are adapted to the inner anti-slip vertical grooves.

[0009] Preferably, the front end of the connecting bushing surface is provided with an annular groove, and the inner cavity of the annular groove is fitted with a backstop ring.

[0010] Preferably, a positioning plate is fixedly connected to the rear side of the drive shaft surface, and the front side of the positioning plate is in close contact with the eccentric block.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model, through the setting of the locking component, enables the connecting bushing to be stably installed on the surface of the drive shaft. Then, with the cooperation of the fastening component, the eccentric block is stably fastened to the surface of the connecting bushing, thereby creating a reliable connection between the eccentric block and the drive shaft, thus achieving the purpose of easy adjustment of the installation position and reliable locking.

[0013] 2. The present invention uses a locking component, in which the interlocking block, the outer groove and the inner groove work together to lock the drive shaft and the connecting bushing, so that the drive shaft and the connecting bushing can rotate stably and synchronously. At the same time, with the help of screws, the connection stability between the drive shaft and the connecting bushing is enhanced.

[0014] 3. This utility model enhances the friction strength between the inner wall of the mounting hole and the surface of the connecting bushing by using the combination of outer and inner anti-slip vertical grooves, thereby enabling the eccentric block to be stably installed on the surface of the connecting bushing and rotate synchronously with the connecting bushing. Attached Figure Description

[0015] in:

[0016] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0017] Figure 2 This is an exploded perspective view of the drive shaft, connecting bushing, eccentric block and fastening assembly according to one embodiment of the present invention.

[0018] Figure 3 This is an exploded perspective view of the drive shaft, connecting bushing, and locking assembly according to an embodiment of the present invention.

[0019] Figure 4 This is a top cross-sectional view of the drive shaft, connecting bushing, and locking assembly according to one embodiment of the present invention.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Drive motor; 2. Drive shaft; 3. Connecting bushing; 4. Eccentric block; 5. Fastening assembly; 51. Mounting hole; 52. Outer anti-slip vertical groove; 53. Inner anti-slip vertical groove; 54. Expansion joint; 55. Bolt; 6. Locking assembly; 61. Insert; 62. Outer groove; 63. Inner groove; 64. Screw; 65. Positioning plate; 7. Anti-reverse clamp; 8. Annular groove. Detailed Implementation

[0022] In the following description, embodiments of the anti-loosening fastening structure for the eccentric block of the concrete vibrator of this utility model will be described with reference to the accompanying drawings.

[0023] Figure 1-4 This invention illustrates an embodiment of a concrete vibrator eccentric block anti-loosening fastening structure, comprising a drive shaft 2 fixedly connected to the output shaft of a drive motor 1; a connecting bushing 3 is sleeved on the surface of the drive shaft 2, an annular groove 8 is formed at the front end of the surface of the connecting bushing 3, and an anti-reverse clamping ring 7 is provided in the inner cavity of the annular groove 8; a positioning plate 65 is fixedly connected to the rear side of the surface of the drive shaft 2, and the front side of the positioning plate 65 is tightly fitted with an eccentric block 4; two eccentric blocks 4 are sleeved on the surface of the connecting bushing 3. A fastening assembly 5 is provided at the connection position with the connecting bushing 3. The fastening assembly 5 includes a mounting hole 51 formed on the surface of the eccentric block 4. The inner wall of the mounting hole 51 has a plurality of inner anti-slip vertical grooves 53 arranged in a ring. The surface of the drive shaft 2 has a plurality of outer anti-slip vertical grooves 52 arranged in a ring, which are adapted to the inner anti-slip vertical grooves 53. The cooperation of the outer anti-slip vertical grooves 52 and the inner anti-slip vertical grooves 53 enhances the friction strength between the inner wall of the mounting hole 51 and the surface of the connecting bushing 3, thereby enabling the eccentric block 4 to be stably installed on the connecting bushing 3. The surface of the connecting bushing 3 rotates synchronously with the connecting bushing 3. An expansion joint 54 is provided on one side of the inner cavity of the mounting hole 51. Two bolts 55 are threaded through one side of the eccentric block 4. The bolts 55 are threadedly connected to the eccentric block 4. A locking assembly 6 is provided in the inner cavity of the connecting bushing 3. The locking assembly 6 includes two inserts 61. External grooves 62 that fit the inserts 61 are provided on both sides of the drive shaft 2. Internal grooves 63 that fit the inserts 61 are provided on both sides of the inner cavity of the connecting bushing 3. Both sides of the drive shaft 2 are threaded with two screws 64. One end of the screw 64 passes through the inner cavity of the insert 61 and the outer groove 62 and is threadedly connected to the drive shaft 2. Through the setting of the locking component 6, the cooperation of the insert 61, the outer groove 62 and the inner groove 63 plays a locking role between the drive shaft 2 and the connecting bushing 3, so that the drive shaft 2 and the connecting bushing 3 can rotate stably and synchronously. At the same time, with the cooperation of the screws 64, the connection stability between the drive shaft 2 and the connecting bushing 3 is enhanced.

[0024] Working principle: When using this utility model, the user places the connecting bushing 3 on the surface of the drive shaft 2, and then inserts the two inserts 61 into the inner cavities of the two outer slots 62 respectively, so that the connecting bushing 3 and the drive shaft 2 are locked relative to each other and rotate synchronously. Then, the user screws 64 into the inner cavity of the connecting bushing 3 from the surface of the connecting bushing 3. The screws 64 pass through the connecting bushing 3 and the inserts 61 and form a threaded connection with the drive shaft 2, so that the drive shaft 2 and the connecting bushing 3 are connected and locked. Next, the eccentric block 4 is placed on the surface of the connecting bushing 3, so that the mounting hole 51 is placed on the surface of the connecting bushing 3. Then, the bolt 55 is screwed into the surface of the eccentric block 4, so that the expansion joint 54 is compressed, and the inner wall of the mounting hole 51 is tightly attached to the surface of the connecting bushing 3. Through the frictional interlocking action of the outer anti-slip vertical grooves 52 and the inner anti-slip vertical grooves 53, the eccentric block 4 is stably installed on the surface of the drive shaft 2.

[0025] In summary, the anti-loosening fastening structure of the eccentric block of this concrete vibrator, through the setting of the locking component 6, allows the connecting bushing 3 to be stably installed on the surface of the drive shaft 2. Subsequently, with the cooperation of the fastening component 5, the eccentric block 4 is stably fastened to the surface of the connecting bushing 3, thereby creating a reliable connection between the eccentric block 4 and the drive shaft 2, thus achieving the purpose of facilitating the adjustment of the installation position and ensuring a reliable locking.

Claims

1. A concrete vibrator eccentric block anti-loosening fastening structure, characterized in that, Includes a drive shaft (2) fixedly connected to the output shaft of a drive motor (1): a connecting bushing (3) is fitted on the surface of the drive shaft (2), two eccentric blocks (4) are fitted on the surface of the connecting bushing (3), a fastening assembly (5) is provided at the connection position between the eccentric blocks (4) and the connecting bushing (3), the fastening assembly (5) includes a mounting hole (51) opened on the surface of the eccentric block (4), an expansion joint (54) is opened on one side of the inner cavity of the mounting hole (51), two bolts (55) are provided through one side of the eccentric block (4), the bolts (55) are threadedly connected to the eccentric block (4), and a locking assembly (6) is provided in the inner cavity of the connecting bushing (3).

2. The anti-loosening and fastening structure for the eccentric block of the concrete vibrator according to claim 1, characterized in that, The locking assembly (6) includes two inserts (61), and both sides of the drive shaft (2) are provided with external grooves (62) that are adapted to the inserts (61), and both sides of the inner cavity of the connecting bushing (3) are provided with internal grooves (63) that are adapted to the inserts (61).

3. The anti-loosening fastening structure for the eccentric block of the concrete vibrator according to claim 2, characterized in that, The connecting bushing (3) has two screws (64) threaded on both sides. One end of the screw (64) passes through the inner cavity of the insert (61) and the outer groove (62) in sequence and is threaded to the drive shaft (2).

4. The anti-loosening fastening structure for the eccentric block of the concrete vibrator according to claim 3, characterized in that, The inner wall of the mounting hole (51) has a plurality of inner anti-slip vertical grooves (53), and the surface of the drive shaft (2) has a plurality of outer anti-slip vertical grooves (52) that are adapted to the inner anti-slip vertical grooves (53).

5. The anti-loosening and fastening structure for the eccentric block of a concrete vibrator according to claim 4, characterized in that, The front end of the surface of the connecting bushing (3) is provided with an annular groove (8), and the inner cavity of the annular groove (8) is provided with a backstop ring (7).

6. The anti-loosening fastening structure for the eccentric block of a concrete vibrator according to claim 5, characterized in that, A positioning plate (65) is fixedly connected to the rear side of the surface of the drive shaft (2), and the front side of the positioning plate (65) is in close contact with the eccentric block (4).

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