Sealing structure on duplex universal joint

Abstract

The utility model discloses a sealing structure on a duplex universal joint, and belongs to the technical field of sealing. Comprising a transverse column, a U-shaped seat is fixedly connected to the right end of the transverse column, arc-shaped grooves are symmetrically formed in the inner side wall of the U-shaped seat, and clamping circular cavities are fixedly connected to the interiors of the arc-shaped grooves; power transmission is coherent and stable through precise matching of all the components, and energy loss in the power transmission process is greatly reduced through the cooperative rotation mechanism of the clamping circular cavity and the rotary column and the cooperative rotation mechanism of the transverse circular cavity and the rotary column and the rolling resistance reduction effect of the lubricating balls. No matter in the power direction change or continuous operation, efficient power transmission can be guaranteed, the equipment operation efficiency is improved, and the energy consumption is reduced. Meanwhile, the transverse column and the U-shaped seat are firmly connected through the clamping column clamping groove and the limiting strip limiting groove, loosening or deviation in the power transmission process is effectively prevented, the reliability of the whole system is enhanced, the overall service life of the equipment is prolonged, and various scene requirements are met.

Description

Technical Field

[0001] The utility model relates to a sealing technology, in particular to a sealing structure on a double universal joint. Background Art

[0002] In the field of mechanical transmission, universal joints are key components for achieving variable-angle power transmission. Traditional double-jointed universal joints present numerous problems. In terms of power transmission, due to the imprecise connection structure, gaps easily appear between the components, resulting in significant energy loss during power transmission, making it difficult to ensure efficient and stable power transmission. For example, when the power direction changes, the components cannot quickly and smoothly adjust their angles to accommodate changes, resulting in power transmission jams and affecting the overall operating efficiency of the equipment.

[0003] In terms of lubrication and sealing, previous designs often lacked effective automatic adjustment mechanisms. For one thing, the lubricant supply couldn't be adjusted based on the equipment's operating conditions, such as speed and vibration. Furthermore, poor sealing performance allowed dust and impurities to easily intrude into key rotating parts, increasing friction between components, shortening service life, and increasing equipment maintenance costs. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a device that cannot automatically adjust the supply of lubricant according to the operating status of the equipment such as speed, vibration, etc.; the utility model also has another purpose to provide a device with poor sealing performance, which allows dust and impurities to easily invade key rotating parts, increase the friction between components, shorten the service life, and increase the maintenance cost of the equipment.

[0005] The cam is fixedly provided with a U-shaped seat on the right side of the crossbar, and an arc groove is symmetrically provided on the inner wall of the U-shaped seat, and an engaging circular cavity is fixedly connected to the inner side of the arc groove, and a connecting transverse cavity is symmetrically fixedly connected to the right side of the U-shaped seat at both ends of the connecting transverse cavity. The connecting transverse cavity is symmetrically fixedly connected to the connecting U seat at both ends. The inner wall of the connecting U seat is provided with a connecting groove, and the interior of the connecting groove is fixedly connected to the transverse circular cavity, and a square cavity is provided inside the connecting transverse cavity. The front surface of the square cavity is fixedly connected to the front rotating post, and the rear surface of the square cavity is fixedly connected to the rear rotating post. The outer wall of the front rotating post is rotatably connected to the inner side of the front transverse circular cavity, and the outer wall of the rear rotating post is rotatably connected to the inner side of the rear transverse circular cavity. The lower surface of the square cavity is fixedly connected to the lower rotating post, and the upper surface of the square cavity is fixedly connected to the upper rotating post, and the outer wall of the lower rotating post is rotatably connected to the inner side of the engaging circular cavity below, and the upper rotating post is rotatably connected to the inner side of the engaging circular cavity above.

[0006] Furthermore, the outer side walls of the front rotating column, the rear rotating column, the upper rotating column and the lower rotating column are all integrally formed with a transverse groove, the inside of the engaging circular cavity and the transverse circular cavity are both provided with a rotating groove, the inside of the rotating groove is rotatably connected with a plurality of lubricating balls, the inner side wall of the rotating groove is provided with a rolling groove, the lubricating balls are all rollingly connected to the rolling groove, and the lubricating balls are all rollingly connected to the transverse groove.

[0007] Furthermore, a slide groove is provided inside the square cavity, and a plurality of connecting grooves are provided on the inner side of the slide groove. The connecting grooves extend to the inside of the transverse groove at one end away from the slide groove and are fixedly connected with a liquid outlet hole. The inside of the slide groove is slidably connected with a liquid storage cavity, and a plurality of connecting holes are symmetrically provided on the inner side wall of the liquid storage cavity. A sliding mouth is provided on the right side of the square cavity, and an extrusion column is slidably connected to the inside of the sliding mouth. A plurality of springs are fixedly connected between the left side of the liquid storage cavity and the inner left side of the slide groove.

[0008] Furthermore, a slot is provided on the right side of the horizontal column, a limiting slot is provided on the inner side wall of the slot, a column is fixedly connected to the left side of the U-shaped seat, and a limiting strip is fixedly connected to the outer side wall of the column.

[0009] Furthermore, a threaded connection hole is provided at the right end of the horizontal column.

[0010] Furthermore, a locking screw hole is fixedly opened on the left side of the outer side wall of the horizontal column, and a locking stud is connected to the inner thread of the locking screw hole.

[0011] Beneficial Effects: The precise coordination between the various components ensures consistent and stable power transmission. The coordinated rotation mechanism between the locking cavity and the rotating column, as well as the horizontal cavity and the rotating column, coupled with the rolling drag-reducing effect of the lubricating balls, significantly reduces energy loss during power transmission. Whether during changes in power direction or continuous operation, efficient power transmission is guaranteed, improving equipment operating efficiency and reducing energy consumption. Furthermore, the secure connection between the horizontal column and the U-shaped seat, via the column slots and the limit bar slots, effectively prevents loosening or deviation during power transmission, enhancing the reliability of the entire system, extending the overall service life of the equipment, and adapting to various scenarios.

[0012] The ingenious design of the reservoir adjusts the flow and pressure of the lubricant or sealing fluid according to the rotation and vibration of the cavity. This provides lubrication to critical parts at different stages of operation, reducing friction and wear and extending component life. It also creates an effective seal, preventing the ingress of dust and impurities and protecting the internal structure. The lubrication balls, integrated with the horizontal grooves of the rotor column, further enhance lubrication, ensuring smoother and more stable operation of the entire rotating system and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the U-shaped seat of the present invention;

[0015] Figure 3 This is a schematic cross-sectional view of the horizontal column of the utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the utility model connecting the transverse cavity;

[0017] Figure 5 This is a schematic diagram of the overall cross-sectional structure of the square cavity of the utility model;

[0018] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the utility model;

[0019] Figure 7 It is a schematic diagram of the overall structure of the square cavity of the present utility model.

[0020] In the figure: 1. horizontal column; 2. U-shaped seat; 3. arc-shaped groove; 4. engaging circular cavity; 5. connecting horizontal cavity; 6. connecting U-shaped seat; 7. connecting groove; 8. horizontal circular cavity; 9. square; 10. front rotating column; 11. rear rotating column; 12. lower rotating column; 13. upper rotating column; 15. horizontal groove; 16. rotating groove; 17. lubricating ball; 18. rolling groove; 19. sliding groove; 20. connecting groove; 21. liquid outlet; 22. liquid storage cavity; 23. connecting hole; 24. sliding mouth; 25. extrusion column; 26. spring; 27. slot; 28. limiting slot; 29. ​​clamping column; 30. limiting strip; 31. threaded connection hole; 32. locking screw hole; 33. locking stud. DETAILED DESCRIPTION

[0021] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0022] like Figure 1-7As shown, a sealing structure on a double universal joint is provided, including a transverse column 1, the right end of the transverse column 1 is fixedly connected to a U-shaped seat 2, the inner side wall of the U-shaped seat 2 is symmetrically provided with an arc groove 3, the interior of the arc groove 3 is fixedly connected to a locking circular cavity 4, a connecting transverse cavity 5 is provided on the right side of the U-shaped seat 2, the two ends of the connecting transverse cavity 5 are symmetrically fixedly connected to the connecting U seat 6, the inner side wall of the connecting U seat 6 is provided with a connecting groove 7, the interior of the connecting groove 7 is fixedly connected to a transverse circular cavity 8, a square cavity 9 is provided inside the connecting transverse cavity 5, the front surface of the square cavity 9 is fixedly connected to a front rotating column 10, the rear surface of the square cavity 9 is fixedly connected to a rear rotating column 11, the outer side wall of the front rotating column 10 is rotatably connected to the interior of the front transverse circular cavity 8, and the rear rotating column 11 The outer wall is rotatably connected to the interior of the rear transverse circular cavity 8, the lower surface of the square cavity 9 is fixedly connected to a lower rotating column 12, the upper surface of the square cavity 9 is fixedly connected to an upper rotating column 13, the outer wall of the lower rotating column 12 is rotatably connected to the interior of the lower engaging circular cavity 4, the upper rotating column 13 is rotatably connected to the interior of the upper engaging circular cavity 4, the outer walls of the front rotating column 10, the rear rotating column 11, the upper rotating column 13 and the lower rotating column 12 are all integrally formed with a transverse groove 15, the interior of the engaging circular cavity 4 and the transverse circular cavity 8 are provided with a rotating groove 16, the interior of the rotating groove 16 is rotatably connected to a plurality of lubricating balls 17, the inner wall of the rotating groove 16 is provided with a rolling groove 18, the lubricating balls 17 are all rollingly connected to the rolling groove 18, and the lubricating balls 17 are all rollingly connected to the transverse groove 15;

[0023] When a power source acts on the transverse column 1, it begins to rotate. Because it is fixedly connected to the U-shaped seat 2, it drives the U-shaped seat 2 to rotate along with it. During the rotation of the U-shaped seat 2, the engaging circular cavity 4 within the arcuate groove 3 generates an interaction force with the upper and lower rotating columns 13 and 12 of the square cavity 9. The engaging circular cavity 4 transmits torque to the upper and lower rotating columns 13 and 12 through friction and other forces, allowing the square cavity 9 to obtain the power for rotation. After receiving the power from the U-shaped seat 2, the upper and lower rotating columns 13 and 12 of the square cavity 9 rotate within the engaging circular cavity 4. Simultaneously, the front and rear rotating columns 10 and 11 rotate within the transverse circular cavity 8, which connects the two ends of the transverse cavity 5 to the U-shaped seat 6. The rotation of the front and rear rotating columns within the transverse circular cavity 8 limits the horizontal shaking of the square cavity 9, ensuring its rotational stability and assisting in the angular adjustment of the square cavity 9 to accommodate different working requirements and changes in the direction of power transmission. The rotation of lower and upper rotating columns 12, 13 within the engaging circular cavity 4 ensures good power transmission between the square cavity 9 and the U-shaped seat 2, and also buffers vertical forces to a certain extent. As the horizontal column 1 continuously inputs power, the entire structure continues to operate. The square cavity 9 transmits power to the connected horizontal cavity 5 and subsequent connected components, completing the power transmission process within the double universal joint sealing structure. The coordinated and coordinated operation of these components ensures efficient and stable power transmission.

[0024] In this embodiment, a chute 19 is provided inside the square cavity 9, and a plurality of connecting grooves 20 are provided inside the chute 19. The ends of the connecting grooves 20 away from the chute 19 extend to the inside of the transverse groove 15 and are fixedly connected to the liquid outlet 21. The inside of the chute 19 is slidably connected to the liquid storage cavity 22. The inner side wall of the liquid storage cavity 22 is symmetrically provided with a plurality of connecting holes 23. A sliding opening 24 is provided on the right side of the square cavity 9. The interior of the sliding opening 24 is slidably connected to an extrusion column 25. A plurality of springs 26 are fixedly connected between the left side of the liquid storage cavity 22 and the inner left side of the chute 19.

[0025] Due to inertia and the constraints of the spring 26, the liquid storage chamber 22 inside the square chamber 9 has a tendency to slide relatively within the chute 19, but no significant displacement has occurred. As the square chamber 9 rotates, it is squeezed by the inner side of the U-shaped seat 2, and the liquid storage chamber 22 overcomes some of the resistance of the spring 26 and slides within the chute 19. As the liquid storage chamber 22 slides, the connecting hole 23 on its inner wall gradually aligns and connects with the connecting groove 20 inside the chute 19. At this time, the sealing liquid or lubricant in the liquid storage chamber 22 has the conditions to flow to the connecting groove 20. When the connecting hole 23 is fully aligned and connected with the connecting groove 20, the liquid in the liquid storage chamber 22 flows to the liquid outlet 21 through the connecting groove 20 under the action of the pressure difference and the centrifugal force generated by the rotation of the square chamber 9. The liquid then flows out from the liquid outlet 21 into the transverse groove 15, lubricating and sealing the contact parts of the rotating parts, lubricating the contact parts between the front and rear rotating columns and the transverse circular cavity 8, etc., to reduce friction and wear, while enhancing the sealing effect to prevent dust and impurities from entering the key rotating parts. During the continuous operation of the equipment, the rotation state, vibration conditions and other factors of the square cavity 9 will continue to change. The liquid storage cavity 22 will dynamically adjust the sliding position in the slide groove 19 according to these changes under the action of the spring 26. When the vibration of the square cavity 9 is weakened or the rotation speed is stabilized within a certain range, the spring 26 may pull the liquid storage cavity 22 back to a certain position, so that the connecting area between the connecting hole 23 and the connecting groove 20 changes, thereby adjusting the flow rate and pressure of the liquid to adapt to the lubrication and sealing requirements under different working conditions.

[0026] In this embodiment, a slot 27 is provided on the right side of the crossbar 1, a limiting slot 28 is provided on the inner side wall of the slot 27, a clamping column 29 is fixedly connected to the left side of the U-shaped seat 2, and a limiting strip 30 is fixedly connected to the outer side wall of the clamping column 29. A threaded connection hole 31 is provided at the right end of the crossbar 1, and a locking screw hole 32 is fixedly provided on the left side of the outer side wall of the crossbar 1. A locking stud 33 is threadedly connected to the inner side of the locking screw hole 32.

[0027] Align the post 29 on the left side of the U-shaped seat 2 with the slot 27 on the right side of the crossbar 1 and insert it. As the post 29 is inserted into the slot 27, the retaining bar 30 on the outer wall of the post 29 simultaneously slides into the retaining groove 28 on the inner wall of the slot 27. At this point, the crossbar 1 and the U-shaped seat 2 are securely connected through the cooperation of the post 29 with the slot 27, and the retaining bar 30 with the retaining groove 28, preparing for subsequent power transmission. The length of the crossbar 1 can be adjusted to suit different usage environments, enriching the application scenarios. The locking stud 33 remains in the locking screw hole 32, continuously providing stability for the connection between the crossbar 1 and the external connection components. When the crossbar 1 needs to be replaced, the bolt hole 32 can be removed and the threaded connection hole 31 of the crossbar 1 can be replaced to connect it to the required tool.

[0028] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A sealing structure on a double universal joint, comprising a cross column (1), characterized in that: The right end of the horizontal column (1) is fixedly connected to a U-shaped seat (2), the inner side wall of the U-shaped seat (2) is symmetrically provided with an arc-shaped groove (3), and the interior of the arc-shaped groove (3) is fixedly connected to a locking circular cavity (4); A connecting transverse cavity (5) is provided on the right side of the U-shaped seat (2), and the two ends of the connecting transverse cavity (5) are symmetrically fixedly connected to the connecting U seat (6), and a connecting groove (7) is provided on the inner wall of the connecting U seat (6), and the interior of the connecting groove (7) is fixedly connected to the transverse circular cavity (8), and a square cavity (9) is provided inside the connecting transverse cavity (5), and the front surface of the square cavity (9) is fixedly connected to the front rotating column (10), and the rear surface of the square cavity (9) is fixedly connected to the rear rotating column (11), and the front rotating column The outer wall of (10) is connected to the interior of the horizontal circular cavity (8) in front, the outer wall of the rear rotating column (11) is connected to the interior of the horizontal circular cavity (8) in the rear, the lower surface of the square cavity (9) is fixedly connected to the lower rotating column (12), the upper surface of the square cavity (9) is fixedly connected to the upper rotating column (13), the outer wall of the lower rotating column (12) is connected to the interior of the engaging circular cavity (4) below, and the upper rotating column (13) is connected to the interior of the engaging circular cavity (4) above.

2. The sealing structure on the double universal joint according to claim 1, characterized in that: The outer side walls of the front rotating column (10), the rear rotating column (11), the upper rotating column (13) and the lower rotating column (12) are all integrally formed with a transverse groove (15); the insides of the engaging circular cavity (4) and the transverse circular cavity (8) are both provided with a rotating groove (16); the insides of the rotating groove (16) are rotatably connected with a plurality of lubricating balls (17); the inner side walls of the rotating groove (16) are provided with a rolling groove (18); the lubricating balls (17) are all rollingly connected to the rolling groove (18); and the lubricating balls (17) are all rollingly connected to the transverse groove (15).

3. The sealing structure on the double universal joint according to claim 1, characterized in that: A slide groove (19) is provided inside the square cavity (9), and a plurality of connecting grooves (20) are provided inside the slide groove (19). The connecting grooves (20) extend to the inside of the transverse groove (15) at one end away from the slide groove (19) and are fixedly connected with a liquid outlet hole (21). The inside of the slide groove (19) is slidably connected with a liquid storage cavity (22), and the inner side wall of the liquid storage cavity (22) is symmetrically provided with a plurality of connecting holes (23). A slide opening (24) is provided on the right side of the square cavity (9), and an extrusion column (25) is slidably connected inside the slide opening (24). A plurality of springs (26) are fixedly connected between the left side of the liquid storage cavity (22) and the left side inside the slide groove (19).

4. The sealing structure on the double universal joint according to claim 1, characterized in that: A clamping slot (27) is provided on the right side of the transverse column (1), a limiting slot (28) is provided on the inner side wall of the clamping slot (27), a clamping column (29) is fixedly connected to the left side of the U-shaped seat (2), and a limiting strip (30) is fixedly connected to the outer side wall of the clamping column (29).

5. The sealing structure on the double universal joint according to claim 1, characterized in that: A threaded connection hole (31) is provided at the right end of the transverse column (1).

6. The sealing structure for a double universal joint according to claim 1, characterized in that: A locking screw hole (32) is fixedly provided on the left side of the outer side wall of the transverse column (1), and a locking stud (33) is connected to the inner thread of the locking screw hole (32).

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