Scroll machine eccentric mechanism

Abstract

The utility model belongs to mechanical engineering field relates to a kind of scroll mechanical eccentric mechanism, including main shaft, the eccentric sleeve is connected in main shaft one end, eccentric sleeve one side is provided with joint balancing block, joint balancing block one side is provided with driving pin, driving pin one side is provided with screw nail, screw nail one side is provided with limit pin. The utility model is complete in structure, perfect in function, can effectively improve the stability and reliability of equipment operation, reduce the difficulty of part processing, improve assembly, also avoid the vibration and noise increase caused by eccentric structure instability and other influences, reduce failure rate, provide guarantee for long-term stable operation of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering, and specifically relates to a vortex mechanical eccentric mechanism. Background Technology

[0002] Scroll machinery systems are widely used in compressors, hydraulic devices, engines, and other fields. Most existing scroll machinery systems adopt traditional eccentric mechanisms, using an eccentric shaft to drive a scroll disk in a trajectory, thereby achieving the compression of gas or liquid and the transmission of fluid power.

[0003] However, the existing eccentric structure and balance block of the vortex machine are mostly integrated, which makes it difficult and costly to manufacture, as it is necessary to ensure the eccentricity, the limiting angle, the counterweight mass and the center of mass of the balance block. Utility Model Content

[0004] The purpose of this utility model is to provide a vortex mechanical eccentric mechanism that can ensure that the eccentricity between the eccentric sleeve and the main shaft can be flexibly adjusted within a preset range when operating at high speed, and can also ensure the overall dynamic balance of each rotating component in the main shaft motion system; moreover, this solution is low in cost, easy to process, and easy to install.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a vortex mechanical eccentric mechanism, including a main shaft, an eccentric sleeve connected to one end of the main shaft, a joint balance block provided on one side of the eccentric sleeve, a drive pin provided on one side of the joint balance block, a screw provided on one side of the drive pin, and a limit pin provided on one side of the screw.

[0006] Preferably, the outer cylindrical surface of the eccentric sleeve is provided with a pin hole for transmitting torque, and the eccentric sleeve is provided with a limiting hole for limiting its rotation range. The limiting hole can be oblong or circular.

[0007] Preferably, the joint balance block has a semi-circular structure and is fixed to the main shaft by screws.

[0008] Preferably, there is a preset eccentric distance between the outer circle center and the inner hole center of the eccentric sleeve.

[0009] Preferably, the center of the joint balance block is concentric with the mounting end face on the main shaft where the joint balance block is mounted.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model has a complete structure and perfect functions, which can effectively improve the stability and reliability of equipment operation, reduce the difficulty of parts processing, improve assembly, and avoid the impact of increased vibration and noise caused by the instability of eccentric structure, thereby reducing the failure rate and providing a guarantee for the long-term stable operation of the equipment. This invention ensures that the eccentricity between the eccentric sleeve and the main shaft can be adjusted in a timely manner during high-speed operation, and belongs to a combined eccentric structure. The balance block and the eccentric sleeve are separate and independently designed. The position of the balance block is fixed during high-speed operation of the compressor, effectively ensuring the dynamic balance of the operating parts under various speeds and changing operating conditions, thereby reducing compressor vibration and improving reliability. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A three-dimensional structural diagram of a vortex mechanical eccentric mechanism provided in Embodiment 1; Figure 2 An isometric view of a vortex mechanical eccentric mechanism provided in Example 1; In the above figures, 1 is the spindle, 2 is the eccentric sleeve, 3 is the joint balance block, 4 is the pin hole, 5 is the drive pin, 6 is the screw, and 7 is the limit pin. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Example 1, as Figure 1-2 As shown, a vortex mechanical eccentric mechanism includes a main shaft 1, an eccentric sleeve 2 connected to one end of the main shaft 1, a joint balance block 3 provided on one side of the eccentric sleeve 2, a drive pin 5 provided on one side of the joint balance block, a screw 6 provided on one side of the drive pin 5, and a limit pin 7 provided on one side of the screw 6.

[0016] The primary function of the main shaft 1 is to transmit the power and rotational motion input from the motor or engine to all connected components without loss or lag. The main shaft 1 directly applies circular motion to the eccentric sleeve 2, thereby generating the necessary translational revolution to drive the scroll plate. One end of the main shaft 1 is connected to the eccentric sleeve 2. A preset eccentricity exists between the outer circle center and the inner hole center of the eccentric sleeve 2. A pin hole 4 for transmitting torque is provided on the end face of the eccentric sleeve 2. When the main shaft 1 rotates, it drives the eccentric sleeve 2 to move accordingly. Due to the eccentricity, the outer circle center of the eccentric sleeve 2 does not rotate around its own geometric center, but rather performs a circular motion with a radius equal to the eccentricity around the central axis of the main shaft 1. This circular motion is transmitted to the connected moving scroll plate through the pin hole 4 on the outer cylindrical surface of the eccentric sleeve 2, forcing the moving scroll plate to engage and disengage relative to the stationary scroll plate, thus forming a continuously changing sealed cavity to achieve gas compression or expansion. The circular motion is transmitted to the connected moving scroll plate through the outer cylindrical surface of the eccentric sleeve 2, forcing the moving scroll plate to mesh with the stationary scroll plate, thereby forming a continuously changing sealed cavity and achieving gas compression. The eccentric sleeve 2 is provided with a limiting hole to restrict its rotation range; the limiting hole can be oblong or circular. A joint balance block 3 is provided on one side of the eccentric sleeve 2. The joint balance block 3 has a semi-circular structure, so that the mass of the joint balance block 3 is concentrated on the side opposite to the eccentric direction of the eccentric sleeve 2, thereby achieving the most effective balance effect with minimal mass, while reducing the overall weight and the moment of inertia. A gap is left between the cylindrical surface of the joint balance block 3 and the cylindrical surface of the main shaft 1 for easy installation. The mass distribution of the joint balance block 3 is optimized to balance the centrifugal inertial force generated by the eccentric sleeve 2 and the components mounted on the eccentric sleeve 2 during rotation. By precisely adjusting the shape, thickness, and even the opening of weight reduction holes or balance adjustment holes of the balance block, it can achieve the best dynamic balance effect at a specific speed. The center of the joint balance block 3 is concentric with the mounting end face of the joint balance block 3 on the main shaft 1.

[0017] A drive pin 5 is provided on one side of the joint balance block 3. The drive pin 5, through an interference fit with the pin hole 4, precisely determines the relative circumferential position between the eccentric sleeve 2 and the moving scroll plate. A limit pin 7 is provided on one side of the drive pin 5. During installation, the limit pin 7, through the limit hole of the eccentric sleeve 2, can limit the rotation range and angle of the eccentric sleeve 2. Two screws 6 are provided on one side of the joint balance block 3. The screws 6 reliably fix the joint balance block to the main shaft 1.

[0018] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0019] 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 other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A vortex mechanical eccentric mechanism, characterized in that, It includes a main spindle, one end of which is connected to an eccentric sleeve. A joint balance block is provided on one side of the eccentric sleeve, a drive pin is provided on one side of the joint balance block, a screw is provided on one side of the drive pin, and a limit pin is provided on one side of the screw.

2. The vortex mechanical eccentric mechanism according to claim 1, characterized in that, The outer cylindrical surface of the eccentric sleeve is provided with a pin hole for transmitting torque, and the eccentric sleeve is provided with a limiting hole for limiting its rotation range. The limiting hole can be oblong or circular.

3. The vortex mechanical eccentric mechanism according to claim 1, characterized in that, The joint balance block has a semi-circular structure and is fixed to the main shaft by screws.

4. The vortex mechanical eccentric mechanism according to claim 1, characterized in that, There is a preset eccentric distance between the outer circle center and the inner hole center of the eccentric sleeve.

5. A vortex mechanical eccentric mechanism according to claim 1, characterized in that, The center of the joint balance block is concentric with the mounting end face on the main shaft where the joint balance block is installed.

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