A coupling mechanism for a worm gear box

Abstract

The utility model relates to a technical field of joint mechanism, especially a joint mechanism of worm wheel box, including: box, the worm wheel and worm structure is included in the box, and the worm end part is equipped with the shaft coupling, the shaft coupling includes: first half coupling, first half coupling is installed in the worm end part, second half coupling, second half coupling is connected on first half coupling through intermediate element, intermediate element, intermediate element includes disc body, and the both sides of disc body are equipped with the boss that is perpendicular to each other, installation layer, installation layer is covered in the boss, and is equipped with a plurality of even distribution rollable ball on the installation layer, the boss cooperation is installed in the recess of half coupling, and the installation layer is between half coupling and intermediate element, the utility model reduces the motion resistance and component wear and tear obviously, promotes transmission efficiency, and whole structure is composed of half coupling, intermediate element and installation layer simultaneously, and the number of parts is few, and the assembly relation is simple, effectively simplifies the installation process, and reduces the assembly difficulty.

Description

Technical Field

[0001] This utility model relates to the technical field of coupling mechanisms, and more particularly to a coupling mechanism for a worm gear box. Background Technology

[0002] Worm gearboxes, as core components of power transmission systems, are widely used in engineering machinery, automation equipment, transportation machinery and other fields. Their coupling mechanism is used to realize torque transmission between the worm gear and the external power shaft or actuator shaft, and is a key structure to ensure the stability of power transmission and the reliability of equipment operation.

[0003] In the existing technology, the coupling mechanism of the worm gear box mainly has the following technical defects: Limited eccentricity compensation capability: Traditional couplings mostly use rigid connections or elastic pad connections, which can only adapt to a very small range of installation eccentricity. When there is a slight coaxiality deviation between the two shafts, additional bending moment is easily generated, which leads to increased wear of the coupling, increased vibration and noise, and even affects the meshing accuracy of the worm gear structure. High motion resistance and severe wear: Some flexible couplings achieve angle or eccentricity compensation through sliding friction, which has a high coefficient of friction, significant energy loss, and is prone to problems such as component aging and increased clearance after long-term use, thus reducing transmission efficiency; Complex structure and inconvenient installation: In order to achieve multi-directional compensation function, some couplings are designed with multi-layer hinge structure or complex elastic elements, with a large number of parts, complicated assembly process and high maintenance cost. In view of the shortcomings of the prior art, this application aims to provide a worm gear box coupling mechanism that is simple in structure, easy to install, has good eccentricity compensation effect, low wear and strong adaptability, so as to solve the technical problems existing in the existing coupling mechanism. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a coupling mechanism for a worm gear box.

[0005] In view of this, the present invention provides a coupling mechanism for a worm gear box, comprising: a box body, the box body including a worm gear structure, and a coupling provided at the end of the worm; the coupling including: a first half coupling, the first half coupling being installed at the end of the worm; a second half coupling, the second half coupling being connected to the first half coupling via an intermediate element; an intermediate element, the intermediate element including a disc body, the disc body having mutually perpendicular bosses on both sides; a mounting layer, the mounting layer being sleeved on the bosses, and having a plurality of evenly distributed rolling balls on the mounting layer; the bosses being fitted into the grooves of the half couplings, and the mounting layer being between the half couplings and the intermediate element.

[0006] Furthermore, the boss has a circular cross-section.

[0007] Furthermore, the cross-section of the boss is drum-shaped.

[0008] Furthermore, the mounting layer is provided with several evenly distributed mounting holes, and rollers are provided in the mounting holes.

[0009] Furthermore, the axial cross-section of the mounting hole is drum-shaped.

[0010] The beneficial effects of this utility model are: 1. This utility model significantly reduces motion resistance and component wear, and improves transmission efficiency; at the same time, the overall structure consists of a half coupling, intermediate components and mounting layer, with fewer parts and simpler assembly relationships, effectively simplifying the installation process and reducing assembly difficulty.

[0011] 2. This utility model has several evenly distributed mounting holes on the mounting layer, and rollers are installed in the mounting holes: compared with balls, rollers have a larger contact area and stronger load-bearing capacity, and are suitable for torque transmission under heavy load conditions; at the same time, the line contact form of the rollers can reduce the pressure per unit area and reduce the wear rate, and the evenly distributed mounting holes make the rollers uniformly stressed, further ensuring transmission stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the disassembly structure of the coupling of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of the boss of this utility model with a circular cross-section; Figure 4 This is a schematic diagram of the structure of the boss in this utility model with a drum-shaped cross-section: Figure 5 This is a structural schematic diagram of the mounting layer and the cross-section of the roller in this utility model; Figure 6 This is a schematic diagram of the mounting layer and rollers of this utility model; Figure 7 for Figure 3 A schematic diagram of the mounting layer and rollers in area A.

[0013] The markings in the diagram are as follows: 1. Housing; 2. Worm gear; 3. First half coupling; 4. Second half coupling; 5. Intermediate element; 6. Disc; 7. Boss; 8. Mounting layer; 9. Ball bearing; 10. Roller. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0015] Example 1 This embodiment provides a coupling mechanism for a worm gear box, including: a housing 1, which contains a worm gear 2 structure, and a coupling is provided at the end of the worm gear 2; the coupling includes: a first half-coupling 3, which is installed at the end of the worm gear 2; a second half-coupling 4, which is connected to the first half-coupling 3 through an intermediate element 5; the intermediate element 5, which includes a disc body 6, with mutually perpendicular bosses 7 on both sides of the disc body 6; and a mounting layer 8, which is sleeved on the bosses 7 and has a plurality of evenly distributed rolling balls 9; the bosses 7 are fitted into the grooves of the half-couplings, and the mounting layer 8 is located between the half-couplings and the intermediate element 5.

[0016] The housing 1 is the outer shell of the worm gear box. Inside the housing 1, there is a worm gear 2 structure and other necessary components. A coupling is provided at the end of the worm 2, which is connected to a half coupling on one side of the coupling. The coupling includes a first half coupling 3, a second half coupling 4, and an intermediate element 5. The intermediate element 5 is a disc-shaped structure with radial bosses 7 formed on both sides of the disc, and the two bosses 7 are perpendicular to each other. The mounting layer 8 is provided with several evenly distributed mounting holes. The inner diameter of the mounting holes is smaller at both ends and larger in the middle. The balls 9 are installed into the mounting holes by compression.

[0017] Through the above-mentioned structural connection, the compensation function of small-range eccentric setting of the two shafts can be realized. The rolling connection formed by the ball bearings 9 replaces the traditional sliding contact, which significantly reduces motion resistance and component wear, and improves transmission efficiency. At the same time, the overall structure consists of a half coupling, intermediate element 5 and mounting layer 8. The number of parts is small and the assembly relationship is simple, which effectively simplifies the installation process and reduces the assembly difficulty. Moreover, the limiting parts on both sides of the boss 7 can reliably limit the axial displacement of the mounting layer 8, prevent it from sliding out from the side of the boss 7, and ensure the stability of the mechanism operation.

[0018] Example 2 This embodiment provides a coupling mechanism for a worm gear box, which, in addition to the technical solutions of the above embodiments, also has the following technical features: The boss 7 has a circular cross-section: This design makes the processing of the boss 7 simpler and easier to form through conventional processing methods such as turning, thus reducing manufacturing costs; at the same time, the circular cross-section has a uniform contact trajectory with the mounting layer 8, which can make the stress distribution more balanced in the circumferential direction, reduce local stress concentration, and improve the load-bearing capacity and service life of the boss 7.

[0019] The boss 7 has a drum-shaped cross section: The drum-shaped cross section of the boss 7 has better eccentricity compensation adaptability. When the eccentricity between the two axes is slightly large, the drum-shaped curved surface can achieve angle and eccentricity compensation through a wider range of contact adaptation. Moreover, the curved surface contact can reduce local pressure and avoid the problem of excessive contact stress caused by eccentricity, further improving the smoothness of the mechanism's operation.

[0020] The two types of boss 7 cross-sectional shapes mentioned above can be flexibly selected according to actual working conditions (such as eccentricity requirements, processing cost budget, etc.) to improve the working condition adaptability of the coupling mechanism.

[0021] The mounting layer 8 has several evenly distributed mounting holes, and rollers 10 are installed in the mounting holes. Compared with balls 9, rollers 10 have a larger contact area and stronger load-bearing capacity, making them suitable for torque transmission under heavy load conditions. At the same time, the line contact form of rollers 10 can reduce the pressure per unit area and reduce the wear rate. Furthermore, the evenly distributed mounting holes ensure that the rollers 10 are subjected to uniform force, further guaranteeing transmission stability.

[0022] The mounting hole has a drum-shaped cross-section: the drum-shaped mounting hole is compatible with the shape and rolling trajectory of the roller 10, which can provide reliable guidance and limit for the roller 10, avoid jamming or deviation of the roller 10 during rolling, ensure the smooth movement of the roller 10, and at the same time reduce the clearance fit error between the mounting hole and the roller 10, thereby improving the transmission accuracy.

[0023] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms fall within the scope of protection of this application.

Claims

1. A coupling mechanism for a worm gear box, characterized in that, include: The housing (1) includes a worm gear (2) structure, and the end of the worm gear (2) is provided with a coupling; The coupling includes: The first half-coupling (3) is installed at the end of the worm (2); The second half coupling (4) is connected to the first half coupling (3) via an intermediate element (5); The intermediate element (5) includes a disk body (6) with mutually perpendicular bosses (7) on both sides of the disk body (6). Mounting layer (8) is fitted on boss (7) and a number of evenly distributed rolling balls (9) are provided on mounting layer (8). The boss (7) is fitted into the groove of the half coupling, and the mounting layer (8) is between the half coupling and the intermediate element (5).

2. The coupling mechanism of a worm gear box according to claim 1, characterized in that, The cross-section of the boss (7) is circular.

3. The coupling mechanism of a worm gear box according to claim 1, characterized in that, The cross-section of the boss (7) is drum-shaped.

4. The coupling mechanism of a worm gear box according to claim 1, characterized in that, The mounting layer (8) has several evenly distributed mounting holes, and rollers (10) are provided in the mounting holes.

5. The coupling mechanism of a worm gear box according to claim 4, characterized in that, The axial cross-section of the mounting hole is drum-shaped.

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