Self-lubricating eccentric block structure of road roller vibrating wheel

Abstract

The utility model provides a self-lubricating eccentric block structure of a road roller vibrating wheel. The self-lubricating eccentric block structure comprises a vibrating shaft, a fixed eccentric part, a movable eccentric part, a stop pin, a fixed sleeve and a fan blade plate, a gap exists between the impact position of the movable eccentric part and the fan blade plate and provides sufficient space for deformation of the movable eccentric part, so that the situation that the movable eccentric part cannot freely rotate between the two fixed eccentric parts due to material extrusion and local thickening of the movable eccentric part is prevented, and the service life of the movable eccentric part is prolonged. And therefore, the eccentric structure can realize the function of large and small amplitudes.

Description

A self-lubricating eccentric block structure for a road roller vibratory wheel Technical Field

[0001] This utility model relates to the field of road roller equipment technology, specifically to a self-lubricating eccentric block structure for a road roller vibratory wheel. Background Technology

[0002] The vibratory roller used on a vibratory roller has an eccentric structure that generates centrifugal force when rotating at high speed. It typically has bearing mounting cylindrical surfaces at both ends, supported by bearings and installed inside the vibratory wheel. Due to the high rotational speed of this eccentric structure, a self-lubricating eccentric structure is usually used to ensure bearing lubrication. The structure of the eccentric component that generates centrifugal force includes a movable eccentric component mounted on the vibratory shaft and a fixed eccentric component fixed to the vibratory shaft. The movable eccentric component can rotate freely between the two fixed eccentric components. However, during the reverse rotation, the movable eccentric component will collide with the pin. The impact area of ​​the movable eccentric component will cause material compression, resulting in local thickening. Ultimately, this will prevent the movable eccentric component from rotating freely between the two fixed eccentric components, thus preventing it from achieving the function of two amplitudes. Summary of the Invention

[0003] The purpose of this utility model is to design a self-lubricating eccentric block structure for a road roller vibratory wheel to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: It includes two fixed eccentric components fixed to the vibratory shaft and a movable eccentric component rotatably connected to the vibratory shaft and located between the two fixed eccentric components. A stop pin for pushing the movable eccentric component is provided between the two fixed eccentric components. The fixed eccentric component includes a fixed sleeve fixed to the vibratory shaft and a fan blade plate fixed to the outer circle of the fixed sleeve. The stop pin is fixed to the fan blade plate. The width of the fan blade plate is smaller than the width of the fixed sleeve, and the side of the fan blade plate and the fixed sleeve facing away from the movable eccentric component is flush. There is a gap between the point of impact between the movable eccentric component and the stop pin and the fan blade plate.

[0004] Furthermore, a chamfer is provided on the outer circle of the fixed sleeve near the movable eccentric member.

[0005] Furthermore, the movable eccentric component includes a rotating block rotatably connected to the vibration shaft and an impact block detachably connected to the rotating block.

[0006] Furthermore, the impact block includes two symmetrically distributed impact units, which are fan-shaped.

[0007] Furthermore, the sides of the two impact units that are close to each other abut against each other.

[0008] Furthermore, the impact block and the rotating block are provided with aligned threaded holes, and the bolt passes through both aligned threaded holes to fix the impact block to the rotating block.

[0009] Furthermore, the impact block is provided with several machined surfaces and several blind holes located on the machined surfaces. The blind holes coincide with the axis of the threaded hole, and the nut of the bolt is located inside the blind hole.

[0010] Furthermore, the rotating block is provided with several bosses, and the impact block is provided with grooves that cooperate with the bosses.

[0011] Furthermore, the groove is a dovetail groove.

[0012] Furthermore, the outer contours of both the impact block and the rotating block are provided with rounded corners on each side.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, there is a gap between the impact point of the movable eccentric member and the fan blade plate. This gap provides sufficient space for the deformation of the movable eccentric member, thereby preventing the movable eccentric member from becoming locally thickened due to material compression, which would prevent the movable eccentric member from rotating freely between the two fixed eccentric members. This ensures that the eccentric structure can achieve the function of two amplitudes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0016] Figure 2 is a schematic diagram of the movable eccentric component;

[0017] Figure 3 is a schematic diagram of the fixed eccentric component structure.

[0018] The components are: 1. Boss; 2. Fixing sleeve; 3. Fan blade plate; 4. Fixed eccentric component; 5. Stop pin; 6. Machined surface; 7. Vibration shaft; 8. Rotating block; 9. Impact block; 10. Movable eccentric component; 11. Bolt; 12. Impact unit; 13. Chamfer. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] Example: Please refer to Figures 1-3. A self-lubricating eccentric block structure for a road roller vibratory wheel includes two fixed eccentric parts 4 fixed to the vibratory shaft 7 and a movable eccentric part 10 rotatably connected to the vibratory shaft 7 and located between the two fixed eccentric parts 4. A stop pin 5 is provided between the two fixed eccentric parts 4 for pushing the movable eccentric part 10. The specific installation method of the movable eccentric part 10, the fixed eccentric parts 4 and the stop pin 5 can refer to the installation of the eccentric structure in a common road roller vibrator, and will not be elaborated further here. In addition, the fixed eccentric part 4 includes a fixed sleeve 2 fixed to the vibratory shaft 7 and a fixed... The fan blade plate 3 is fixed to the outer circle of the fixed sleeve 2, and the stop pin 5 is fixed to the fan blade plate 3. The width of the fan blade plate 3 is smaller than the width of the fixed sleeve 2, and the fan blade plate 3 and the fixed sleeve 2 are flush with the side of the movable eccentric member 10 away from the movable eccentric member 10. There is a gap between the movable eccentric member 10 and the stop pin 5 and the fan blade plate 3. This gap provides sufficient space for the deformation of the movable eccentric member 10, and prevents the movable eccentric member 10 from being unable to rotate freely between the two fixed eccentric members 4 when the movable eccentric member 10 becomes locally thickened due to material compression at the impact point. In this way, it can be ensured that the eccentric structure can realize the function of two amplitudes.

[0021] In this embodiment, a chamfer 13 is provided on the outer circle of the fixed sleeve 2 near the movable eccentric member 10. Since the deformation of the movable eccentric member 10 is greater closer to the impact point, the design of the outer circle chamfer 13 can generate a certain clearance, which is beneficial to prevent the movable eccentric member 10 from getting stuck.

[0022] The movable eccentric component 10 includes a rotating block 8 rotatably connected to the vibration shaft 7 and an impact block 9 detachably connected to the rotating block 8. Since the impact point is prone to breakage or excessive deformation, the movable eccentric component 10 is detachably divided into the impact block 9 and the rotating block 8. When the impact block 9 breaks or is excessively deformed, the rotating block 8 can be replaced directly. This ensures the normal operation of the eccentric structure and prevents the need to replace the entire eccentric structure when the movable eccentric component 10 breaks, thus improving replacement efficiency and preventing material waste.

[0023] Since the operating frequencies of the two amplitudes may be inconsistent, the impact frequencies at the head and tail of the impact block 9 may also be inconsistent. Therefore, the impact block 9 is divided into two symmetrically distributed impact units 12, which the operator can replace selectively. The impact unit 12 is fan-shaped, which helps to improve the stability of the structural strength. The sides of the two impact units 12 that are close to each other abut against each other, which helps to reduce the force at the connection between the impact unit 12 and the rotating block 8 and improve the connection strength between the impact unit 12 and the rotating block 8. The impact unit 12 and the rotating block 8 are provided with aligned threaded holes. The bolt 11 passes through the two aligned threaded holes to fix the impact block 9 to the rotating block 8, thereby realizing the detachable connection between the impact unit 12 and the rotating block 8. The impact block 9 is provided with several machined planes 6 to facilitate the machining of threaded holes. The impact block 9 is also provided with several blind holes located on the machined planes 6. The axes of the blind holes coincide with those of the threaded holes, and the nuts of the bolts 11 are located inside the blind holes, making the structure more compact.

[0024] In this embodiment, the rotating block 8 is provided with a plurality of bosses 1, and the impact block 9 is provided with grooves that cooperate with the bosses 1, which facilitates the installation of the impact block 9 and helps to improve the connection strength and resistance to damage of the impact block 9; wherein, the groove is a dovetail groove, which facilitates installation and helps to prevent one side of the impact block 9 from lifting up; the outer contours of the impact block 9 and the rotating block 8 are provided with rounded corners on each edge, which reduces stress concentration and helps to prevent the edge from breaking.

[0025] Working principle: There is a gap between the impact point of the movable eccentric part 10 and the stop pin 5 and the fan blade plate 3. This gap provides sufficient space for the deformation of the movable eccentric part 10, preventing the movable eccentric part 10 from being unable to rotate freely between the two fixed eccentric parts 4 due to local thickening caused by material compression at the impact point. This ensures that the eccentric structure can achieve the function of two amplitudes.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A self-lubricating eccentric block structure for a road roller vibratory wheel, comprising two fixed eccentric parts (4) fixed to a vibratory shaft (7) and a movable eccentric part (10) rotatably connected to the vibratory shaft (7) and located between the two fixed eccentric parts (4), wherein a stop pin (5) for pushing the movable eccentric part (10) is provided between the two fixed eccentric parts (4), characterized in that: The fixed eccentric component (4) includes a fixed sleeve (2) fixedly connected to the vibration shaft (7) and a fan blade plate (3) fixedly connected to the outer circle of the fixed sleeve (2). The stop pin (5) is fixedly connected to the fan blade plate (3). The width of the fan blade plate (3) is smaller than the width of the fixed sleeve (2), and the fan blade plate (3) and the fixed sleeve (2) are flush with one side away from the movable eccentric component (10). There is a gap between the collision point of the movable eccentric component (10) and the stop pin (5) and the fan blade plate (3).

2. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 1, characterized in that: The outer circle of the fixed sleeve (2) near the movable eccentric member (10) is provided with a chamfer (13).

3. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 1, characterized in that: The movable eccentric component (10) includes a rotating block (8) rotatably connected to the vibration shaft (7) and an impact block (9) detachably connected to the rotating block (8).

4. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 3, characterized in that: The impact block (9) includes two symmetrically distributed impact units (12), which are fan-shaped.

5. The self-lubricating eccentric block structure of a road roller vibration wheel according to claim 4, characterized by: The two impact units (12) have their adjacent sides abutting against each other.

6. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 3 or 4, characterized in that: The impact block (9) and the rotating block (8) are provided with aligned threaded holes, and the bolt (11) passes through the two aligned threaded holes to fix the impact block (9) to the rotating block (8).

7. The self-lubricating eccentric block structure of a road roller vibration wheel according to claim 6, characterized by: The impact block (9) has several processing planes (6) and several blind holes located on the processing planes (6). The blind holes coincide with the axis of the threaded hole, and the nut of the bolt (11) is located inside the blind holes.

8. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 3 or 4, characterized in that: The rotating block (8) is provided with a plurality of protrusions (1), and the impact block (9) is provided with grooves that cooperate with the protrusions (1).

9. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 8, characterized in that: The groove is a dovetail groove.

10. The self-lubricating eccentric block structure of the road roller vibratory wheel according to claim 3 or 4, characterized in that: The outer contours of the impact block (9) and the rotating block (8) are all provided with rounded corners.

Images