Split eccentric

Abstract

The utility model discloses a kind of split eccentric wheels, belong to mechanical equipment technical field, including upper wheel and lower wheel, upper wheel bottom is fixedly connected with cylinder, lower wheel top is correspondingly provided with embedding hole, cylinder is embedded in embedding hole, the split connection of eccentric wheel main part is realized, the pin hole is correspondingly provided in upper wheel front side and lower wheel top, split eccentric wheel further include right angle plate, screw and nut, the front end and bottom of right angle plate are fixedly connected with bolt, bolt is inserted into the pin hole of upper wheel front side and lower wheel top, the positioning connection of right angle plate limits the radial relative sliding of upper wheel and lower wheel, the recess inside of upper wheel front side is fixedly connected with internal thread. The utility model structure is optimized, effectively solve the problem of insufficient split connection reliability, reach the technical effect of guaranteeing eccentric wheel running structure stability and integrity.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a split eccentric wheel. Background Technology

[0002] Eccentric wheels, as a common mechanical transmission and vibration excitation component, are widely used in industrial equipment such as vibrating screens, road rollers, and mixers. In practical applications, eccentric wheels are installed on rotating shafts to generate necessary eccentric forces or drive reciprocating motion. When traditional integrated eccentric wheels need to be replaced or repaired, it is often necessary to disassemble the entire rotating shaft or most of its surrounding components. The operation process is complex, time-consuming, and labor-intensive. Especially in large mechanical equipment, maintenance work is difficult and downtime is long.

[0003] To address the difficulties in installing and replacing integrated eccentric wheels, split eccentric wheels have emerged on the market. Split eccentric wheels divide the wheel body into two parts radially or axially, which are then connected and fixed to the shaft using bolts and other connectors. However, this simple split connection, when subjected to high-frequency vibrations, alternating loads, and strong centrifugal forces generated during eccentric wheel operation, relies solely on the friction on the split surfaces and a small amount of bolt tightening force. It is difficult to ensure that the upper and lower halves of the wheel will not slip relative to each other during operation, especially relative displacement in the radial direction. This relative slippage will cause the eccentricity of the eccentric wheel to become inaccurate, and will seriously affect the reliability of the connection and the overall structural stability. Long-term operation will lead to loosening of the connection, wear of parts, and even the complete failure of the eccentric wheel.

[0004] Therefore, this utility model proposes a split eccentric wheel to solve the problems of insufficient connection reliability and high risk of radial relative sliding in the operation of the split eccentric wheel in the prior art. Utility Model Content

[0005] In view of the problems of existing split eccentric wheels, such as simple structure and reliance on bolt fastening force for connection, resulting in insufficient connection reliability and high risk of radial relative sliding under high speed and high load operation, this utility model aims to provide a split eccentric wheel with improved structure that can effectively solve the above problems.

[0006] This utility model provides a split eccentric wheel, including: an upper wheel, a lower wheel, a right-angle plate, a screw, and a nut.

[0007] A cylinder is fixedly connected to the bottom of the upper wheel, and an embedding hole is correspondingly opened on the top of the lower wheel. The cylinder is embedded in the embedding hole, realizing the split connection of the eccentric wheel body and the circumferential synchronization of the foundation.

[0008] The right-angle plate is used to constrain the connection between the upper and lower wheels in the radial direction. The front end and bottom of the right-angle plate are fixedly connected with pins. The pins are inserted into the pin holes on the front side of the upper wheel and the top of the lower wheel, thereby realizing the positioning connection between the right-angle plate and the upper and lower wheels.

[0009] The upper wheel has a notch on its front side, and an internal thread is fixedly connected inside the notch. The screw passes through the right-angle plate and is screwed into the internal thread. A nut is threaded onto the body of the screw, and the nut abuts against the surface of the right-angle plate. Through the tight fit of the screw and the nut, a continuous clamping force is applied to the right-angle plate, further reinforcing the connection between the right-angle plate and the upper and lower wheels. This ensures that the upper and lower wheels will not experience radial relative slippage during operation, thereby guaranteeing the overall structural stability and eccentricity accuracy of the split eccentric wheel.

[0010] Preferably, the cylinder is embedded in the embedding hole along the central axis of the upper wheel, and the fit between the cylinder and the embedding hole is set as an interference fit. This interference fit can ensure reliable torque transmission capability and stronger anti-separation force between the upper and lower wheels.

[0011] Preferably, the right-angle plate is L-shaped, and the fit between the pin of the right-angle plate and the pin hole is set as a transition fit. This fit ensures both the convenience of assembly and the radial positioning accuracy after final tightening.

[0012] Preferably, the pin fixedly connected to the front end of the right-angle plate is inserted into the pin hole on the front side of the upper wheel, and the pin fixedly connected to the bottom of the right-angle plate is inserted into the pin hole on the top of the lower wheel. The right-angle plate achieves the most direct radial limitation at the connection point by crossing the split surface of the upper and lower wheels.

[0013] Preferably, the position of the nut on the screw is adjustable, and the nut is in close contact with the surface of the right-angle plate to ensure that the preload can be effectively transmitted to the right-angle plate, further enhancing the reliability of the connection.

[0014] Preferably, the threaded connection between the screw and the internal thread is a metric standard thread to facilitate machining and standardization.

[0015] Preferably, the notch on the front side of the upper wheel is a blind hole structure, and the internal thread is fixedly connected to the side wall of the notch. The structure prevents the internal thread from being contaminated or damaged by the outside world.

[0016] Preferably, the connection surface between the upper wheel and the lower wheel is a plane perpendicular to the central axis of the eccentric wheel, which simplifies the processing difficulty and improves the centering accuracy of the split surface.

[0017] Preferably, the pin hole on the front side of the upper wheel and the pin hole on the top of the lower wheel are aligned with each other in the radial direction, so that the pin of the right-angle plate can be accurately inserted into place in one go.

[0018] Preferably, the cylinder has a circular cross-section, which is a commonly used high-precision alignment and connection structure.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model solves the problem of difficult installation and replacement of integral eccentric wheels in the prior art by designing the eccentric wheel as a split structure of upper and lower wheels, and by fitting the cylinder at the bottom of the upper wheel with the embedding hole at the top of the lower wheel, thereby reducing the difficulty of installing and replacing eccentric wheels.

[0021] 2. This utility model, through the precise fit between the cylinder and the embedded hole, ensures accurate circumferential alignment and synchronous rotation of the upper and lower wheels after splitting and docking, effectively solving the problem of circumferential misalignment of the split surface and achieving the effect of ensuring circumferential synchronization and alignment accuracy when the eccentric wheel is running.

[0022] 3. This utility model, by setting a right-angle plate, pin, pin hole, and a fastening and positioning combination mechanism of screw, nut, and internal thread, realizes the cross-connection and tight locking of the upper and lower wheel connection, solves the problem of relative sliding in the radial direction of the split connection in the prior art, and achieves the effect of effectively limiting the radial relative sliding between the upper and lower wheels, and greatly improving the overall stability and rigidity of the eccentric wheel. Attached Figure Description

[0023] Figure 1 This is a perspective view of a split eccentric wheel proposed in this utility model;

[0024] Figure 2 This is a front view of a split eccentric wheel proposed in this utility model;

[0025] Figure 3 This is a split view of the right-angle plate in a split eccentric wheel proposed in this utility model;

[0026] Figure 4 This is a cross-sectional view of the upper and lower wheels in a split eccentric wheel proposed in this utility model.

[0027] Legend:

[0028] 1. Upper wheel; 2. Lower wheel; 3. Right-angle plate; 4. Screw; 5. Nut; 6. Pin; 7. Cylindrical; 8. Embedded hole; 9. Notch; 10. Internal thread; 11. Pin hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0030] Example:

[0031] Please refer to Figures 1 to 4 This utility model provides a split eccentric wheel, aiming to solve the problems of unreliable radial positioning and relative slippage in the split connection structure during operation in the prior art, and to ensure the structural stability and integrity of the eccentric wheel.

[0032] A split eccentric wheel includes an upper wheel 1 and a lower wheel 2. A cylinder 7 is fixedly connected to the bottom of the upper wheel 1, and an insertion hole 8 is correspondingly opened on the top of the lower wheel 2. The cylinder 7 has a circular cross-section and is inserted into the insertion hole 8 along the central axis of the upper wheel 1. The fit between the cylinder 7 and the insertion hole 8 is an interference fit. The fitting structure of the cylinder 7 and the insertion hole 8 allows the upper wheel 1 and the lower wheel 2 to be spliced ​​together to form a complete eccentric wheel.

[0033] The connection surface between the upper wheel 1 and the lower wheel 2 is perpendicular to the plane of the eccentric wheel's central axis. This structural design effectively reduces the difficulty of replacing the eccentric wheel and ensures that the upper wheel 1 and the lower wheel 2 can rotate synchronously.

[0034] It also includes a right-angle plate 3, a screw 4, a nut 5, and an internal thread 10. The right-angle plate 3 is L-shaped, and both the front end and the bottom end are integrally formed and fixedly connected with pins 6. The pins 6 are used to position and connect the right-angle plate 3 to the upper wheel 1 and the lower wheel 2.

[0035] Pin holes 11 are provided on the front side of the upper wheel 1 and the top of the lower wheel 2 respectively. The pin 6 is inserted into the pin holes 11 on the front side of the upper wheel 1 and the top of the lower wheel 2, realizing the positioning connection between the right angle plate 3 and the upper wheel 1 and the lower wheel 2. The right angle plate 3 restricts the relative sliding of the upper wheel 1 and the lower wheel 2 in the radial direction through the positioning of the pin 6. The pin holes 11 on the front side of the upper wheel 1 and the pin holes 11 on the top of the lower wheel 2 are aligned with each other in the radial direction. The fit between the pin 6 and the pin holes 11 is a transition fit.

[0036] A notch 9 is provided on the front side of the upper wheel 1. The notch 9 is a blind hole structure, and an internal thread 10 is fixedly connected inside the notch 9. The internal thread 10 is fixedly connected to the side wall of the notch 9. The screw 4 passes through the right-angle plate 3 and is screwed into the internal thread 10 inside the notch 9. The threaded connection between the screw 4 and the internal thread 10 is a metric ordinary thread. A nut 5 is threadedly connected to the body of the screw 4. The nut 5 is threadedly connected to the screw 4, and its position can be adjusted. The nut 5 abuts against the surface of the right-angle plate 3 and is in close contact with it. The preload generated after the nut 5 is tightened further strengthens the connection between the right-angle plate 3 and the upper wheel 1 and the lower wheel 2.

[0037] The pin 6 fixedly connected to the front end of the right-angle plate 3 is specifically inserted into the pin hole 11 on the front side of the upper wheel 1, and the pin 6 fixedly connected to the bottom of the right-angle plate 3 is specifically inserted into the pin hole 11 on the top of the lower wheel 2. This layout allows the positioning constraint to act directly on the split surface.

[0038] Working principle: During assembly, the cylinder 7 is inserted into the insertion hole 8 with an interference fit, which completes the centering and initial connection of the upper wheel 1 and the lower wheel 2. Then, the pin 6 engages with the pin hole 11 to connect the right angle plate 3 across the split surface. The screw 4 is screwed into the internal thread 10, and the nut 5 is tightly pressed against the surface of the right angle plate 3, applying a continuous fastening force to the right angle plate 3.

[0039] When the split eccentric wheel is put into operation, the upper wheel 1 and the lower wheel 2 maintain strict synchronous rotation through the solid fitting structure of the cylinder 7 and the embedded hole 8, avoiding circumferential misalignment. At the same time, the tightening effect of the nut 5 causes the right angle plate 3 to continuously apply radial constraints to the upper wheel 1 and the lower wheel 2. This multi-constraint structure effectively resists the lateral forces generated during operation, avoids the risk of relative sliding between the upper wheel 1 and the lower wheel 2 on the split surface, and ensures the structural stability of the eccentric wheel in long-term operation.

Claims

1. A split eccentric wheel, comprising an upper wheel (1) and a lower wheel (2), wherein a cylinder (7) is fixedly connected to the bottom of the upper wheel (1), and an embedding hole (8) is correspondingly opened on the top of the lower wheel (2), wherein the cylinder (7) is embedded in the embedding hole (8), and pin holes (11) are correspondingly opened on the front side of the upper wheel (1) and the top of the lower wheel (2); Its features are, The upper wheel (1) has a notch (9) on its front side. The notch (9) is fixedly connected with an internal thread (10). The eccentric wheel also includes a right-angle plate (3), a screw (4) and a nut (5). The front end and bottom of the right-angle plate (3) are fixedly connected with pins (6). The pins (6) are inserted into the pin holes (11) on the front side of the upper wheel (1) and the top of the lower wheel (2). The screw (4) passes through the right-angle plate (3) and is screwed into the internal thread (10). The nut (5) is threaded onto the body of the screw (4). The nut (5) abuts against the surface of the right-angle plate (3).

2. The split eccentric wheel according to claim 1, characterized in that, The cylinder (7) is embedded in the embedding hole (8) along the central axis of the upper wheel (1), and the fit between the cylinder (7) and the embedding hole (8) is an interference fit.

3. The split eccentric wheel according to claim 1, characterized in that, The right-angle plate (3) is L-shaped, and the pin (6) of the right-angle plate (3) and the pin hole (11) are in a transition fit.

4. The split eccentric wheel according to claim 1, characterized in that, The pin (6) fixedly connected to the front end of the right-angle plate (3) is inserted into the pin hole (11) on the front side of the upper wheel (1), and the pin (6) fixedly connected to the bottom of the right-angle plate (3) is inserted into the pin hole (11) on the top of the lower wheel (2).

5. The split eccentric wheel according to claim 1, characterized in that, The position of the nut (5) on the screw (4) is adjustable, and the nut (5) is in close contact with the surface of the right angle plate (3).

6. The split eccentric wheel according to claim 1, characterized in that, The threaded connection between the screw (4) and the internal thread (10) is a metric ordinary thread.

7. The split eccentric wheel according to claim 1, characterized in that, The notch (9) on the front side of the upper wheel (1) is a blind hole structure, and the internal thread (10) is fixedly connected to the side wall of the notch (9).

8. The split eccentric wheel according to claim 1, characterized in that, The connection surface between the upper wheel (1) and the lower wheel (2) is a plane perpendicular to the central axis of the eccentric wheel.

9. The split eccentric wheel according to claim 1, characterized in that, The pin hole (11) on the front side of the upper wheel (1) and the pin hole (11) on the top of the lower wheel (2) are aligned with each other in the radial direction.

10. The split eccentric wheel according to claim 1, characterized in that, The cross-section of the cylinder (7) is circular.

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