Gear box speed reducer sealing structure

Abstract

The utility model provides a gear box speed reducer sealing structure, and belongs to the technical field of speed reducers. The gear box speed reducer solves the problems that a gap is easily reserved between a worm and an end cover of a traditional gear box speed reducer, water easily permeates into a gear box, and key components such as a gear and a bearing are rusted and damaged. The gear box speed reducer sealing structure comprises a box body with a containing cavity and an end cover installed on the top of the box body, a plurality of corresponding open grooves are formed in the box body and the end cover, an installation hole communicated with the containing cavity is formed between the box body and the end cover through the open grooves, and a sealing seat and a sealing cover are installed on the installation hole respectively. The sealing seat and the sealing cover are both in a T shape, a convex groove is formed in the center of the sealing cover, the sealing seat and the sealing cover are connected with the box body and the end cover through bolts, and worms are installed on the installation holes. The gear box reducer has the advantage that the sealing performance of the gear box reducer is improved.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducer technology, and relates to a gearbox speed reducer, and particularly to a gearbox speed reducer sealing structure. Background Technology

[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, and plays a role in matching speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery.

[0003] In traditional gearbox reducers, gaps easily accumulate between the worm gear and the end cover, allowing moisture to easily seep into the gearbox, causing corrosion and damage to critical components such as gears and bearings. Furthermore, in dusty environments, dust and water mix to form mud, which can more easily clog the sealing structure, leading to seal failure. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a waterproof and dustproof sealing structure for a gearbox reducer.

[0005] The objective of this utility model can be achieved through the following technical solution: A gearbox reducer sealing structure includes a housing with a cavity and an end cover installed on the top of the housing. Several corresponding opening slots are provided on both the housing and the end cover, and an installation hole communicating with the cavity is formed between the housing and the end cover through the opening slots. The characteristic feature is that a sealing seat and a sealing cover are respectively installed on the installation hole. Both the sealing seat and the sealing cover are T-shaped, and a convex groove is provided at the center of the sealing cover. The sealing seat and the sealing cover are connected to the housing and the end cover by bolts. A worm gear is installed on each of the installation holes. One end of the worm gear is fixedly installed in the installation hole, and the other end extends outward through the sealing cover. The worm gear has a stepped protrusion. A cavity is formed between the sealing cover and the protrusion. A sealing device for sealing is installed in the cavity. The sealing device has a cylindrical structure and is sleeved on the worm gear protrusion.

[0006] In the aforementioned gearbox reducer sealing structure, the sealing device is provided with a fixed cylinder, a fixed block is provided on the inner wall of the fixed cylinder, and the fixed block is placed on the protrusion. An annular sliding groove is opened on the outer wall of the fixed cylinder, a sealing element is provided on the sliding groove, and a sliding ring for sliding on the sliding groove is provided at the bottom of the sealing element. The sealing element is generally conical in shape, and a sealing part is formed at the top of the sealing element, and the sealing part abuts against the sealing cover.

[0007] In the aforementioned gearbox reducer sealing structure, the fixed cylinder is provided with two symmetrical positioning grooves, and the slip ring is provided with a positioning block corresponding to the positioning grooves, and the positioning block is designed with an arc shape.

[0008] In the aforementioned gearbox reducer sealing structure, an annular groove is provided on the sealing cover, and a sealing ring is provided in the groove, with the sealing ring abutting against the inner wall of the mounting hole.

[0009] Compared with existing technologies, the sealing structure of this gearbox reducer achieves multi-stage sealing through the conical structure of the sealing device, the tight fit between the sealing part and the sealing cover, and the auxiliary sealing of the sealing ring. This greatly improves the sealing effect, effectively prevents liquid and external impurities from entering, and extends the service life of the gearbox reducer. Attached Figure Description

[0010] Figure 1 This is a 3D view of the sealing structure of this gearbox reducer.

[0011] Figure 2 This is a cross-sectional view of the sealing structure of this gearbox reducer.

[0012] Figure 3 This is a partial sectional view of the sealing structure of this gearbox reducer.

[0013] In the diagram, 1. Box body; 2. End cover; 3. Mounting hole; 4. Sealing seat; 5. Sealing cover; 6. Worm gear; 7. Protrusion; 8. Sealing device; 9. Fixing cylinder; 10. Fixing block; 11. Slide groove; 12. Sealing element; 13. Slip ring; 14. Sealing part; 15. Positioning groove; 16. Positioning block; 17. Groove; 18. Sealing ring. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 1 , Figure 2 , Figure 3As shown, the sealing structure of this gearbox reducer includes a housing 1 with a cavity and an end cover 2 installed on the top of the housing 1. Several corresponding opening slots are provided on both the housing 1 and the end cover 2, and a mounting hole 3 communicating with the cavity is formed between the housing 1 and the end cover 2 through the opening slots. A sealing seat 4 and a sealing cover 5 are respectively installed on the mounting hole 3. Both the sealing seat 4 and the sealing cover 5 are T-shaped, and a convex groove is provided at the center of the sealing cover 5. The sealing seat 4 is a closed design, while the sealing cover 5 is a hollow design. The design facilitates the extension of the worm gear 6 outside the gearbox. The sealing seat 4 and the sealing cover 5 are connected to the housing 1 and the end cover 2 by bolts. The worm gear 6 is installed on each mounting hole 3. One end of the worm gear 6 is fixedly installed in the mounting hole 3, and the other end passes through the sealing cover 5 and extends outward. The worm gear 6 has a stepped protrusion 7. A cavity is formed between the sealing cover 5 and the protrusion 7. A sealing device 8 for sealing is installed in the cavity. The sealing device 8 has a cylindrical structure and is sleeved on the protrusion 7 of the worm gear 6. The protrusion 7 facilitates the installation of the sealing device 8.

[0016] To elaborate further, the sealing device 8 is equipped with a fixed cylinder 9, and a fixed block 10 is provided on the inner wall of the fixed cylinder 9. The fixed block 10 is installed between the sealing cover 5 and the worm gear 6 to stabilize the fixed cylinder 9, and the fixed block 10 is placed on the protrusion 7. The outer wall of the fixed cylinder 9 is provided with an annular sliding groove 11, and a sealing element 12 is provided on the sliding groove 11. The bottom of the sealing element 12 is provided with a sliding ring 13 for sliding on the sliding groove 11. The sealing element 12 can slide on the fixed cylinder 9 through the sliding ring 13. The sealing device 8 is fitted onto the worm gear 6, and then the sealing cover 5 is installed. The sealing cover 5 slowly squeezes the sealing element 12 to make it abut against the bottom of the fixed cylinder 9 to form a fixation. The sealing element 12 is generally conical in shape, and a sealing part 14 is formed at the top of the sealing element 12. The sealing part 14 abuts against the sealing cover 5. When the sealing element 12 moves to the bottom of the fixed cylinder 9, the connection between the sealing part 14 and the sealing cover 5 forms a stable sealing structure between the sealing cover 5 and the worm gear 6.

[0017] To elaborate further, the fixed cylinder 9 is provided with two symmetrical positioning grooves 15. The positioning grooves 15 prevent the seal 12 from shifting during the sliding process. The slip ring 13 is provided with a positioning block 16 corresponding to the positioning grooves 15. The positioning block 16 has an arc-shaped structure design, which facilitates the seal 12 to slide better on the fixed cylinder 9.

[0018] To elaborate further, the sealing cover 5 has an annular groove 17, and a sealing ring 18 is provided in the groove 17. The sealing ring 18 abuts against the inner wall of the mounting hole 3. The groove 17 is formed between the sealing cover 5 and the mounting hole 3. The static seal between the sealing cover 5 and the mounting hole 3 is achieved by installing the sealing ring 18.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document frequently uses terms such as housing 1, end cap 2, mounting hole 3, sealing seat 4, sealing cover 5, worm gear 6, protrusion 7, sealing device 8, fixing cylinder 9, fixing block 10, sliding groove 11, sealing element 12, slip ring 13, sealing part 14, positioning groove 15, positioning block 16, groove 17, and sealing ring 18, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A sealing structure for a gearbox reducer, comprising a housing (1) with a cavity and an end cover (2) mounted on the top of the housing (1), wherein a plurality of corresponding opening slots are provided on both the housing (1) and the end cover (2), and a mounting hole (3) communicating with the cavity is formed between the housing (1) and the end cover (2) through the opening slots, characterized in that, A sealing seat (4) and a sealing cover (5) are respectively installed on the mounting hole (3). The sealing seat (4) and the sealing cover (5) are both T-shaped, and a convex groove is provided in the center of the sealing cover (5). The sealing seat (4) and the sealing cover (5) are connected to the housing (1) and the end cover (2) by bolts. A worm (6) is installed on each of the mounting holes (3). One end of the worm (6) is fixedly installed in the mounting hole (3), and the other end passes through the sealing cover (5) and extends outward. The worm (6) has a stepped protrusion (7). A cavity is formed between the sealing cover (5) and the protrusion (7). A sealing device (8) for sealing is installed in the cavity. The sealing device (8) is cylindrical and sleeved on the protrusion (7) of the worm (6).

2. The gearbox reducer sealing structure according to claim 1, characterized in that, The sealing device (8) is provided with a fixed cylinder (9), and a fixed block (10) is provided on the inner wall of the fixed cylinder (9). The fixed block (10) is placed on the protrusion (7). A ring-shaped sliding groove (11) is provided on the outer wall of the fixed cylinder (9). A sealing element (12) is provided on the sliding groove (11). A sliding ring (13) for sliding on the sliding groove (11) is provided at the bottom of the sealing element (12). The sealing element (12) is cone-shaped in general. A sealing part (14) is formed at the top of the sealing element (12). The sealing part (14) abuts against the sealing cover (5).

3. The gearbox reducer sealing structure according to claim 2, characterized in that, The fixed cylinder (9) is provided with two symmetrical positioning grooves (15), and the slip ring (13) is provided with a positioning block (16) corresponding to the positioning grooves (15), and the positioning block (16) is designed with an arc shape.

4. The gearbox reducer sealing structure according to claim 1, characterized in that, The sealing cap (5) has an annular groove (17) and a sealing ring (18) is provided in the groove (17), and the sealing ring (18) abuts against the inner wall of the mounting hole (3).

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