Universal joint coupling structure

Abstract

The utility model discloses a universal joint coupling structure relates to universal joint coupling technical field, the utility model discloses a first shaft body and second shaft body, and the first shaft body and second shaft body outside all cover and connect with two half flange plates, and the bolt is connected between four half flange plates, and four half flange plates one end are connected with two jackets respectively, and the jacket one end is fixed with screw rod, and the nut and lock washer are connected with the bolt and screw rod outside all cover. The utility model discloses the setting through the outer cover, the cross joint area is protected through the outer cover, effectively blocks the dust, silt, water and other impurities and enters the cross joint, thereby reduces the bearing and the grease pollution phenomenon in the cross joint to occur, and the outer cover is made of elastic material, and the nature is good, such as fatigue resistance, wear resistance, oil resistance, ageing resistance, corrosion resistance, can bear the pressure and the tension that the outer cover produces through the self deformation when the joint coupling rotates the included angle, is convenient for the protection to the cross joint, thereby prolongs the service life of structure.

Description

Technical Field

[0001] This utility model relates to the field of universal joint coupling technology, specifically a universal joint coupling structure. Background Technology

[0002] Universal joint couplings are connecting components widely used in the field of mechanical transmission. They are mainly used to connect two shafts with different axes or whose relative positions may change, so as to realize the transmission of power and motion between the two shafts. Their core function is to ensure that the two shafts can transmit torque while allowing a certain degree of angular offset, axial displacement or radial displacement between the two shafts. This allows them to adapt to changes in the relative position of the shaft system caused by factors such as installation errors, vibration, and load changes during mechanical operation, thus ensuring the smooth operation of the transmission system.

[0003] In existing universal joint couplings, the cross joint acts as a bridge to connect the two shafts during rotation, and the shafts can rotate around the cross joint, creating a "universal" transmission effect. If there is an angle between the two shafts, adding a protective sleeve will cause the sleeve to undergo compression and tension during continuous rotation, making it prone to cracking or tearing. Furthermore, the centrifugal force generated during rotation will also cause stress on the sleeve. Therefore, it is not suitable to protect the universal joint coupling with a protective sleeve. If no protective sleeve is added, which is the common usage scenario, dust will accumulate in the cross joint area over time. If oil seepage occurs, the lubricating oil will mix with dust and other impurities to form sludge, accelerating the wear of the cross joint and thus affecting the service life of the coupling. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a universal joint coupling structure to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a universal joint coupling structure, comprising a first shaft and a second shaft, both the first and second shafts being fitted with two half-flange plates, and bolts connecting the four half-flange plates. Two sleeves are connected to one end of each of the four half-flange plates, and a screw is fixed to one end of each sleeve. Nuts and anti-loosening washers are fitted onto the outside of the screws and bolts. Self-tapping screws penetrate the tops of the two sleeves. A bottom sleeve is connected between the two sleeves, and a mesh sleeve is fitted onto the outside of the bottom sleeve. A support ring is fitted onto the outside of the mesh sleeve, and a mesh fabric is connected to the top of the mesh sleeve, with an outer sleeve fitted onto the outside of the mesh fabric.

[0006] By adopting the above technical solution, the structure can be firmly installed on the first and second shafts through the cooperation of the half flange plate and bolts. The jacket, screw, nut and anti-loosening washer are used to achieve a reliable connection between the protective structure and the half flange plate. At the same time, the multi-layer protective structure composed of bottom sleeve, mesh sleeve, mesh cloth, support ring and outer sleeve provides effective protection for the cross-shaped area. The self-tapping and self-drilling screws further enhance the connection strength between the protective structure and the jacket. The overall structure not only meets the protection requirements, but also facilitates subsequent disassembly and replacement.

[0007] Furthermore, a ten-byte connection exists between the first axis and the second axis.

[0008] By adopting the above technical solution, the first shaft and the second shaft can achieve universal transmission. While ensuring torque transmission, it allows for angular offset, axial or radial displacement between the two shafts, thereby adapting to changes in the relative position of the shaft system during mechanical operation and ensuring stable power transmission.

[0009] Furthermore, both the bottom sleeve and the outer sleeve are made of PU or TPU material, and the support ring is made of 304 stainless steel or PA66 GF30 material.

[0010] By adopting the above technical solutions, the bottom sleeve and outer sleeve, with the excellent fatigue resistance, wear resistance, oil resistance and corrosion resistance of PU or TPU materials, can effectively prevent dust, mud, water and other impurities from entering the cross-section area. At the same time, they can adapt to the tension and compression of the coupling during operation through their own elasticity. The support ring uses the high strength of 304 stainless steel or PA66 GF30 material as a radial keel to support the entire sheath structure, resist the centrifugal force during rotation, and reduce the risk of the bottom sleeve and outer sleeve being torn due to the increase in diameter caused by centrifugal force.

[0011] Furthermore, the netting and the net fabric are made of spandex blended elastic mesh fabric, which is made of 80% PA66 fiber and 20% spandex fiber, and the spandex blended elastic mesh fabric is a two-way twill woven mesh fabric.

[0012] By adopting the above technical solution, 80% PA66 fiber ensures the structural strength of the mesh sleeve and mesh fabric, 20% spandex fiber gives it good elasticity, and the two-way twill weave enhances the overall tensile and compressive properties, so that the mesh sleeve and mesh fabric can act as an axial keel to withstand the tensile and compressive forces generated by the angle between the two shafts when the coupling rotates, avoiding the sheath structure from being torn or cracked, while adapting to the deformation requirements brought about by the angle change.

[0013] Furthermore, multiple self-tapping screws and mesh fabrics are provided, and the multiple self-tapping screws and mesh fabrics are distributed in a ring array.

[0014] By adopting the above technical solution, multiple self-tapping and self-drilling screws can increase the connection points between the bottom sleeve, mesh sleeve, mesh fabric, outer sleeve, and jacket, thereby increasing the connection strength. The significance of using mesh fabric instead of mesh sleeve outside the support ring is that the setting of the support ring makes the sheath structure form a corrugated structure. Using mesh sleeve for installation is more troublesome. The effect of mesh sleeve is achieved by using a ring array of multiple mesh fabrics.

[0015] Furthermore, the bottom sleeve, mesh sleeve, mesh fabric, support ring, and outer sleeve are bonded and fixed together by a two-component polyurethane adhesive, and the bottom sleeve, mesh sleeve, mesh fabric, and outer sleeve are fixedly connected to the clamp by self-tapping screws.

[0016] By adopting the above technical solution, the bottom sleeve, mesh sleeve, mesh fabric, support ring and outer sleeve are bonded and fixed with an elastic adhesive, which can prevent the adhesive from deforming when the angle of the sheath structure changes, thereby preventing the layers from falling off. The bottom sleeve, mesh sleeve, mesh fabric and outer sleeve are fixed to the inner wall of the jacket with self-tapping screws, thereby preventing the bottom sleeve, mesh sleeve, mesh fabric and outer sleeve from falling off.

[0017] Furthermore, the jacket is detachably connected to the half-flange plate via screws and nuts, and the half-flange plate is detachably connected to the first shaft and the second shaft via bolts.

[0018] By adopting the above technical solution, when the sheath structure and the jacket are damaged and need to be replaced, the workers first remove the nuts and anti-loosening washers on the screw, separate the jacket from the half flange plate, and then remove the bolts that fix the half flange plate so that the jacket and the connected sheath structure can be removed from the end of the first shaft or the second shaft; or the workers remove the ten-piece and then disassemble the sheath structure between the two shafts.

[0019] Furthermore, both the semi-flange plate and the jacket are made of 304 or 316L stainless steel.

[0020] By adopting the above technical solutions, the structure has high strength and excellent corrosion resistance, enabling it to be used for a long time and is suitable for working in harsh environments such as humid conditions.

[0021] Furthermore, the anti-loosening washer is a double-disc self-locking washer.

[0022] By adopting the above technical solution, the nut can be effectively prevented from loosening during equipment vibration, thereby firmly installing the half flange plate on the outside of the shaft and firmly installing the jacket on the end face of the half flange plate.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. This utility model, through the design of the outer sleeve, protects the cross-section area, effectively preventing dust, mud, water, and other impurities from entering the cross-section, thereby reducing the contamination of bearings and lubricating grease within the cross-section. The outer sleeve is made of elastic material, possessing excellent fatigue resistance, wear resistance, oil resistance, aging resistance, and corrosion resistance. It can withstand the pressure and tension generated by the included angle during coupling rotation through its own deformation, thus enabling long-term use; it facilitates the protection of the cross-section, thereby extending the service life of the structure.

[0025] 2. This utility model, through the arrangement of a bottom sleeve, a mesh sleeve, a mesh fabric, and a support ring, uses the support ring as a radial keel to support the sheath structure and withstand the centrifugal force during rotation, reducing the increase in diameter of the outer and bottom sleeves caused by centrifugal force, thereby reducing the phenomenon of centrifugal force tearing the outer and bottom sleeves; while the mesh sleeve and mesh fabric act as the axial keel of the sheath structure, and the mesh sleeve and mesh fabric also have a certain degree of elasticity, bearing axial tensile force, avoiding the sheath structure being torn apart due to vibration, stretching, etc.; increasing structural strength, thus making it suitable for the working environment of universal joint couplings;

[0026] 3. This utility model, through the arrangement of a half-flange plate, a jacket, and self-tapping screws, allows the bottom sleeve, mesh sleeve, mesh fabric, and outer sleeve to be fixed to the inner wall of the jacket using self-tapping screws. When the jacket, bottom sleeve, mesh sleeve, mesh fabric, support ring, and outer sleeve are damaged, the nut and anti-loosening washer on the screw can be removed to separate the jacket from the half-flange plate. Then, the half-flange plate can be disassembled using bolts and nuts, allowing the jacket and other components to be disassembled from the end of the first or second shaft, or the cross-joint can be removed to disassemble the jacket and other components between the first and second shafts; this facilitates replacement of the protective sleeve structure after damage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the first shaft structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the exploded structure of the semi-flange plate of this utility model;

[0030] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer casing of this utility model;

[0031] Figure 5 This is a schematic diagram of the mesh structure of this utility model.

[0032] In the diagram: 1. First shaft; 2. Second shaft; 3. Cross-shaped joint; 4. Half flange plate; 5. Bolt; 6. Jacket; 7. Screw; 8. Nut; 9. Anti-loosening washer; 10. Self-tapping screw; 11. Bottom sleeve; 12. Mesh sleeve; 13. Mesh fabric; 14. Support ring; 15. Outer sleeve. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of this utility model will be described below based on its overall structure.

[0035] Example 1:

[0036] A universal joint coupling structure, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the structure includes a first shaft 1 and a second shaft 2. Two half-flange plates 4 are fitted onto the exterior of both the first shaft 1 and the second shaft 2. Bolts 5 connect the four half-flange plates 4. The half-flange plates 4 are detachably connected to the first shaft 1 and the second shaft 2 via bolts 5. Two sleeves 6 are connected to one end of each of the four half-flange plates 4. A screw 7 is fixed to one end of each sleeve 6. Nuts 8 and anti-loosening washers 9 are fitted onto the exterior of both the screw 7 and the bolts 5. The sleeves 6 are detachably connected to the half-flange plates 4 via the screw 7 and the nuts 8. When the protective sleeve structure and the sleeves 6 are damaged and need to be replaced, the worker first removes the nuts 8 and anti-loosening washers 9 from the screw 7, separates the sleeves 6 from the half-flange plates 4, and then removes the bolts 5 fixing the half-flange plates 4, allowing the sleeves 6 and the connected protective sleeve structure to be removed from the end of the first shaft 1 or the second shaft 2; alternatively, the worker removes the cross-section 3 and then disassembles the protective sleeve structure between the two shafts.

[0037] Both clamping sleeves 6 have self-tapping screws 10 penetrating their tops. A bottom sleeve 11 connects the two clamping sleeves 6, and a mesh sleeve 12 is fitted over the bottom sleeve 11. A support ring 14 is fitted over the mesh sleeve 12. The support ring 14 is made of 304 stainless steel or PA66 GF30 material. A mesh fabric 13 is connected to the top of the mesh sleeve 12. Multiple self-tapping screws 10 and mesh fabric 13 are provided, and the multiple self-tapping screws 10 and mesh fabric 13 are arranged in a ring array. The mesh sleeve 12 and mesh fabric 13 are made of spandex blended elastic mesh fabric, which is a blend of 80% PA66 fiber and 20% spandex fiber, and the spandex blended elastic mesh fabric is a two-way twill woven mesh fabric. An outer sleeve 15 is fitted over the mesh fabric 13. Both the bottom sleeve 11 and the outer sleeve 15 are made of PU or TPU material. The bottom sleeve 11, mesh sleeve 12, mesh fabric 13, and support ring 14 are also included. The bottom sleeve 11, mesh sleeve 12, mesh fabric 13, and outer sleeve 15 are bonded and fixed together with the outer sleeve 6 using a two-component polyurethane adhesive. The bottom sleeve 11, mesh sleeve 12, mesh fabric 13, and outer sleeve 15 are fixedly connected to the clamping sleeve 6 using self-tapping screws 10. The bottom sleeve 11, mesh sleeve 12, mesh fabric 13, support ring 14, and outer sleeve 15 connected to the clamping sleeve 6 together form a protective sleeve structure. The outer sleeve 15 and bottom sleeve 11 are made of PU or TPU material, which directly blocks dust, mud, water, and other impurities from entering the cross-shaped area 3, preventing impurities from mixing with lubricating oil to form sludge that aggravates wear. They can also be used for a long time due to their good fatigue resistance and wear resistance. The support ring 14 is made of 304 stainless steel or PA66. GF30 material serves as the radial keel supporting the entire sheath structure, resisting centrifugal force during coupling rotation and reducing the risk of tearing of the outer sleeve 15 and bottom sleeve 11 due to increased diameter caused by centrifugal force. 304 stainless steel has higher strength and is suitable for medium to high speeds, while PA66 GF30 is suitable for medium to low speed environments. The mesh sleeve 12 and mesh cloth 13 are made of a two-way twill woven elastic mesh cloth blended with 80% PA66 fiber and 20% spandex fiber, serving as the axial keel. Its elasticity is used to withstand the tensile and compressive forces generated by the angle between the two shafts during coupling rotation, preventing the sheath structure from being torn or cracked. At the same time, the self-tapping and self-drilling screws 10 are arranged in a ring array to fix the bottom sleeve 11, mesh sleeve 12, mesh cloth 13 and outer sleeve 15 to the clamp 6, ensuring a stable connection between the protective structure and the clamp 6. Moreover, with the five-layer structure, even if the outer sleeve 15 is punctured or scratched, the bottom sleeve 11 can still provide dust protection and other protective effects.

[0038] See Figure 2 In the above embodiment, a cross-shaped connector 3 connects the first shaft 1 and the second shaft 2. The first shaft 1 and the second shaft 2 are connected through the cross-shaped connector 3. During the power transmission process, the cross-shaped connector 3 allows angular offset, axial or radial displacement between the two shafts, thereby realizing universal transmission and ensuring stable power transmission.

[0039] Example 2:

[0040] Based on the above embodiment 1, the following settings are made to facilitate the use of the half flange plate 4 and the jacket 6.

[0041] See Figure 1 and Figure 3 In the above embodiments, both the half flange plate 4 and the jacket 6 are made of 304 or 316L stainless steel, which has high structural strength and excellent corrosion resistance, can be used for a long time, and is convenient for working in harsh environments such as humid conditions.

[0042] Example 3:

[0043] Based on the above embodiment one, the following settings are now adopted to enhance the seismic resistance.

[0044] See Figure 1 and Figure 3 In the above embodiment, the anti-loosening washer 9 is a double-disc self-locking washer, which can effectively prevent the nut 8 from loosening during equipment vibration, thereby firmly installing the half flange plate 4 on the outside of the shaft and firmly installing the jacket 6 on the end face of the half flange plate 4.

[0045] The implementation principle of this utility model is as follows: First, the first shaft 1 and the second shaft 2 are connected by a cross-shaped connector 3. During the power transmission process, the cross-shaped connector 3 allows for angular offset, axial or radial displacement between the two shafts, thereby realizing universal transmission and ensuring stable power transmission.

[0046] During the transmission process, the half flange plate 4 is fixed to the outside of the first shaft 1 and the second shaft 2 respectively by bolts 5. The sleeve 6 is connected to the half flange plate 4 by screws 7 and nuts 8. The anti-loosening washer 9 under the nut 8 can effectively prevent the nut 8 from loosening during equipment vibration, thereby firmly installing the half flange plate 4 on the outside of the shaft and firmly installing the sleeve 6 on the end face of the half flange plate 4.

[0047] The bottom sleeve 11, mesh sleeve 12, mesh fabric 13, support ring 14, and outer sleeve 15, which connect the jackets 6, together constitute the protective sleeve structure. The outer sleeve 15 and bottom sleeve 11 are made of PU or TPU material, directly blocking dust, mud, water, and other impurities from entering the cross-section 3 area, preventing impurities from mixing with lubricating oil to form sludge that accelerates wear. Furthermore, their excellent fatigue and wear resistance ensures long-term use. The support ring 14 is made of 304 stainless steel or PA66 GF30 material, serving as a radial support for the entire protective sleeve structure. It resists centrifugal force when the coupling rotates, reducing the risk of the outer sleeve 15 and bottom sleeve 11 being torn due to increased diameter caused by centrifugal force. 304 stainless steel offers higher strength and is suitable for medium to high speeds, while PA66... GF30 is suitable for low to medium speed environments. The mesh sleeve 12 and mesh cloth 13 are made of a two-way twill woven elastic mesh cloth blended with 80% PA66 fiber and 20% spandex fiber. As an axial keel, it uses its elasticity to withstand the tensile and compressive forces generated by the included angle between the two shafts when the coupling rotates, preventing the sheath structure from being torn or cracked. At the same time, the self-tapping and self-drilling screws 10 are arranged in a ring array to fix the bottom sleeve 11, mesh sleeve 12, mesh cloth 13 and outer sleeve 15 to the jacket 6, ensuring that the protective structure is firmly connected to the jacket 6. Moreover, with the five-layer structure, even if the outer sleeve 15 is punctured and scratched, the bottom sleeve 11 can still provide dust protection and other protective effects. In addition, since the support rings 14 are densely distributed and the diameter of the outer sleeve 15 and other components is small, it is only suitable for small included angle applications. If the universal joint coupling is used in a large included angle application scenario, the diameter of the outer sleeve 15 and other structures needs to be increased and the distribution density of the support rings 14 needs to be reduced.

[0048] When the sheath structure and the jacket 6 are damaged and need to be replaced, the workers first remove the nut 8 and the anti-loosening washer 9 on the screw 7, separate the jacket 6 from the half flange plate 4, and then remove the bolts 5 that fix the half flange plate 4 so that the jacket 6 and the connected sheath structure can be removed from the end of the first shaft 1 or the second shaft 2; or the workers remove the cross 3 and then disassemble the sheath structure between the two shafts.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A universal joint coupling structure, comprising a first shaft (1) and a second shaft (2), characterized in that: The first shaft (1) and the second shaft (2) are each fitted with two half flange plates (4), and bolts (5) are connected between the four half flange plates (4). Two sleeves (6) are connected to one end of each of the four half flange plates (4), and a screw (7) is fixed to one end of each sleeve (6). Nuts (8) and anti-loosening washers (9) are fitted to the outside of the screws (7) and bolts (5). Self-tapping screws (10) are passed through the top of each of the two sleeves (6). A bottom sleeve (11) is connected between the two sleeves (6), and a mesh sleeve (12) is fitted to the outside of the bottom sleeve (11). A support ring (14) is fitted to the outside of the mesh sleeve (12). A mesh cloth (13) is connected to the top of the mesh sleeve (12), and an outer sleeve (15) is fitted to the outside of the mesh cloth (13).

2. The universal joint coupling structure according to claim 1, characterized in that: The first shaft (1) and the second shaft (2) are connected by a ten-byte (3).

3. The universal joint coupling structure according to claim 1, characterized in that: The bottom sleeve (11) and the outer sleeve (15) are both made of PU or TPU material, and the support ring (14) is made of 304 stainless steel or PA66 GF30 material.

4. The universal joint coupling structure according to claim 1, characterized in that: The net sleeve (12) and the net fabric (13) are made of spandex blended elastic mesh fabric.

5. The universal joint coupling structure according to claim 4, characterized in that: Multiple self-tapping screws (10) and mesh fabric (13) are provided, and the multiple self-tapping screws (10) and mesh fabric (13) are distributed in a ring array.

6. The universal joint coupling structure according to claim 5, characterized in that: The bottom sleeve (11), mesh sleeve (12), mesh fabric (13), support ring (14) and outer sleeve (15) are bonded and fixed together by a two-component polyurethane adhesive, and the bottom sleeve (11), mesh sleeve (12), mesh fabric (13) and outer sleeve (15) are fixedly connected to the jacket (6) by self-tapping screws (10).

7. The universal joint coupling structure according to claim 6, characterized in that: The jacket (6) is detachably connected to the half flange plate (4) by a screw (7) and a nut (8), and the half flange plate (4) is detachably connected to the first shaft (1) and the second shaft (2) by bolts (5).

8. The universal joint coupling structure according to claim 7, characterized in that: Both the half flange (4) and the jacket (6) are made of 304 or 316L stainless steel.

9. The universal joint coupling structure according to claim 7, characterized in that: The anti-loosening gasket (9) is a double-disc self-locking washer.

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