Coupler applied to transmission of sorting machine

Abstract

The invention relates to the technical field of couplings, in particular to a coupling applied to transmission of a sorting machine. The coupler is provided with a flexible body, the flexible body comprises an outer protection ring, an inner protection ring and a middle body, the outer protection ring and the inner protection ring are concentrically arranged, the middle body is arranged between the outer protection ring and the inner protection ring and integrally formed with the outer protection ring and the inner protection ring, and arc-shaped transition grooves are formed between the end of the middle body and the outer protection ring and between the end of the middle body and the inner protection ring. And the supporting buffer piece has elasticity and is filled in the transition groove. Besides, a safety support is further arranged in the flexible body and comprises a supporting body and a holding frame, the supporting body is composed of two supporting plates and the holding frame, the holding frame is provided with a center block and two sets of connecting plates, and the connecting plates are connected with the supporting plates and have elasticity. The safety support further comprises an outer connecting ring and an inner connecting ring which are fixedly connected with the supporting body. The anti-impact coupling achieves the effects of improving the anti-impact performance of the coupling, prolonging the service life and reducing the maintenance cost.

Description

Technical Field

[0001] The present application relates to the technical field of couplings, and in particular to a coupling used in sorting machine transmission. Background Art

[0002] As an important mechanical component, couplings are widely used in various transmission systems, especially when the relative displacement between two shafts needs to be compensated. Such devices can not only ensure the smooth transmission of power, but also effectively extend the service life of mechanical equipment and reduce maintenance costs. With the continuous improvement of industrial automation, the application of couplings in various complex working conditions is becoming more and more common, especially in the fields of logistics sorting, manufacturing assembly lines, etc., and the performance requirements for couplings are also getting higher and higher.

[0003] In the existing coupling technology, common solutions mainly include two categories: rigid couplings and elastic couplings. Rigid couplings are mainly used in situations where the shaft alignment accuracy is high, but because they cannot compensate for the relative displacement between shafts, their scope of application is limited. In contrast, elastic couplings achieve compensation for the displacement between shafts through the deformation of elastic elements, so they are more widely used in practical applications. For example, star couplings and plum blossom-shaped elastic couplings are widely used in various mechanical transmission systems due to their good load capacity and high reliability. These elastic couplings are usually made of materials such as polyurethane or rubber, which can absorb shock and vibration to a certain extent, improving the stability and safety of the system.

[0004] However, although elastic couplings perform well in many aspects, they still have obvious shortcomings in certain specific application scenarios. Especially in equipment with frequent load changes, such as sorting machines, the frequency of load changes is high due to the frequent loading and unloading of goods and the different weights. In this case, the flexible body of ordinary elastic couplings is subjected to variable stress for a long time and is prone to fatigue fracture. Once a fracture occurs, it will not only interrupt the normal operation of the equipment, but may also cause serious safety accidents, threatening the safety of equipment and personnel. Therefore, how to improve the reliability and safety of couplings under high-frequency load change conditions has become a key issue that needs to be solved urgently. Summary of the invention

[0005] The present application provides a coupling for sorting machine transmission, which has overload and failure protection functions to avoid damage to equipment and personnel safety caused by fatigue or overload fracture of the flexible body. The following technical solutions are adopted: A coupling used for transmission of a sorting machine, comprising a flexible body; the flexible body comprises an outer guard ring, an inner guard ring and an intermediate body; The outer guard ring and the inner guard ring are arranged concentrically, the intermediate body is arranged between the outer guard ring and the inner guard ring, and the two ends of the intermediate body are integrally formed with the outer guard ring and the inner guard ring; arc-shaped transition grooves are provided between the ends of the intermediate body and the outer guard ring and the inner guard ring.

[0006] By adopting the above technical solution, the intermediate body is connected with the inner and outer guard rings through a double connection to ensure the stability of the intermediate body. By setting an arc-shaped transition groove, the stress concentration at the connection between the intermediate body and the outer and inner guard rings can be further reduced, thereby effectively improving the stability of the connection between the intermediate body and the inner and outer guard rings. Thereby reducing the probability of fracture between the intermediate body and the inner and outer guard rings.

[0007] Preferably, a supporting buffer is provided in the transition groove, the supporting buffer is filled in the transition groove and bonded to the intermediate body; the supporting buffer is elastic, and the elastic modulus of the supporting buffer is less than or equal to the elastic modulus of the intermediate body.

[0008] By adopting the above technical solution, the support buffer filled in the transition groove can withstand the alternating load, reduce the deformation of the transition groove during operation, and thus reduce the probability of fracture at the connection between the intermediate body and the inner and outer retaining rings. In addition, by making the elastic modulus of the support buffer less than or equal to the elastic modulus of the intermediate body, the support buffer can absorb a part of the alternating load, avoiding excessive extrusion of the transition groove by the support buffer, thereby causing fracture.

[0009] Preferably, a safety bracket is arranged inside the flexible body, and the safety bracket comprises a support body arranged inside the intermediate body; The support body comprises two support plates arranged back to back and a retaining frame arranged between the two support plates; the intermediate body is coated on the side walls of the support plates and the retaining frame and is fixedly connected to the support plates and the retaining frame.

[0010] By adopting the above technical solution, the insurance bracket can play a good supporting role on the intermediate body through the support plate and the retaining frame, and can effectively improve the load capacity of the intermediate body under the premise of ensuring that the intermediate body has good elastic deformation. At the same time, when the intermediate body breaks, the insurance bracket can also bear a certain load and play a role of insurance, thereby reducing the probability of equipment damage.

[0011] Preferably, the retaining frame comprises a central block and two groups of connecting plates, the two groups of connecting plates are respectively located on two opposite sides of the central block, and the two groups of connecting plates are respectively connected to the two supporting plates in a one-to-one correspondence; Each group of the connecting plates comprises two spaced support plates, one end of the support plate is fixedly connected to the central block, and the other end is connected to the support plate, and the two support plates are respectively located at the two ends of the support plate.

[0012] By adopting the above technical solution, two support plates are arranged at intervals, and the intermediate body is wrapped around them. When the intermediate body is partially broken, the support body can still play a certain holding role on the intermediate body. The broken part of the intermediate body is not easy to fall off, and it maintains a certain load capacity together with the support body, thereby reducing the probability of equipment damage.

[0013] Preferably, the two support plates are both configured as arc-shaped plates, and the protrusions of the two support plates are arranged opposite to each other; and the two support plates are both elastic.

[0014] By adopting the above technical solution, both support plates have a certain elasticity, and the deformation capacity of the support plates is further improved by the arc setting, so as to improve the overall elasticity of the flexible body and ensure that the flexible body functions normally.

[0015] Preferably, the material of the central block is consistent with the material of the flexible body.

[0016] By adopting the above technical solution, the flexible body is coated on the outside of the support body by injection molding. During injection molding, the flexible body material can be integrated with the center block, so that the flexible body and the retaining frame are combined into one, thereby effectively improving the integrity of the insurance bracket and the flexible body and prolonging the service life.

[0017] Preferably, the safety bracket further comprises an outer connecting ring arranged inside the outer protective ring and an inner connecting ring arranged inside the inner protective ring; There are a plurality of intermediate bodies, and there are a plurality of supporting bodies corresponding to the intermediate bodies; the supporting body is arranged between the outer connecting ring and the inner connecting ring, and both the outer connecting ring and the inner connecting ring are fixedly connected to the supporting body.

[0018] By adopting the above technical solution, the support body is connected as a whole through the connecting ring, which can further improve the load capacity of the flexible body, and when the flexible body fails, the safety bracket can also better play the insurance role, so that the equipment can still operate and avoid equipment damage.

[0019] Preferably, the outer connecting ring and the inner connecting ring each include a plurality of arc-shaped plates, the arc-shaped plates are arranged between two adjacent supporting bodies, and the opposing supporting plates in the two adjacent supporting bodies are fixedly connected to the arc-shaped plates.

[0020] By adopting the above technical solution, the relative support plates of two adjacent support bodies are connected to each other through an arc plate, which can effectively improve the integrity between the two adjacent support bodies, thereby improving the connection strength between multiple support bodies and intermediate bodies, thereby improving the load capacity of the flexible body.

[0021] Preferably, the outer connecting ring and the inner connecting ring are both fixedly connected to the retaining frame.

[0022] By adopting the above technical solution, both the outer connecting ring and the inner connecting ring are fixedly connected to the retaining frame, which can further enhance the structural stability and integrity of the entire safety bracket, thereby improving the load capacity and durability of the flexible body. In addition, this fixed connection method can also enable the support plate to independently support the intermediate body, thereby improving the deformation capacity and load capacity of the intermediate body.

[0023] Preferably, the flexible body is made of polyurethane material, the safety bracket is made of a material compatible with polyurethane, and the elastic modulus of the safety bracket is greater than the elastic modulus of the flexible body.

[0024] By adopting the above technical solution, the insurance bracket can be made of polyethylene, polystyrene, polypropylene and other materials, which have good compatibility with polyurethane, and the melting temperature is close to the injection molding temperature of polyurethane. The flexible body is coated on the outside of the insurance bracket by injection molding, so that the flexible body and the insurance bracket can be integrated into one, reducing the separation of the flexible body and the insurance bracket, thereby ensuring the normal operation of the flexible body and the insurance bracket and improving the service life. At the same time, the elastic modulus of the insurance bracket is greater than that of the flexible body, which can enable the insurance bracket to provide better support for the flexible body, thereby improving the load capacity of the flexible body and reducing the probability of damage.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The intermediate body is double-connected with the inner and outer retaining rings, and an arc-shaped transition groove is provided, which significantly reduces the stress concentration at the connection between the intermediate body and the inner and outer retaining rings, improves the stability of the connection, and reduces the risk of fracture; 2. The support buffer in the transition groove can withstand alternating loads, reduce the deformation at the transition groove, further reduce the possibility of fracture at the connection between the intermediate body and the inner and outer retaining rings, and enhance the durability of the overall structure; 3. The built-in safety bracket provides effective support for the intermediate body through the support plate and the retaining frame, which improves the load capacity of the intermediate body. At the same time, when the intermediate body breaks, the safety bracket can continue to bear part of the load, reducing equipment damage and safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a coupling used for transmission of a sorting machine in an embodiment of the present application; Figure 2 It is a structural schematic diagram of the flexible body and the safety bracket in the embodiment of the present application; Figure 3 yes Figure 2 The partially enlarged schematic diagram of part A in the middle is used to show the structure of the insurance bracket; Figure 4It is a structural schematic diagram of a flexible body and a safety bracket in a preferred implementation manner of the embodiment of the present application; Figure 5 yes Figure 4 The partially enlarged schematic diagram of part B is used to show the structure of the safety bracket.

[0027] Markings in the accompanying drawings: 1. flexible body; 11. outer guard ring; 12. inner guard ring; 13. intermediate body; 131. transition groove; 14. support buffer; 2. safety bracket; 21. support body; 211. support plate; 212. retaining frame; 2121. connecting plate; 2122. center block; 22. outer connecting ring; 23. inner connecting ring; 3. half coupling. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 The present invention is described in further detail.

[0029] The coupling for the transmission of a sorting machine provided in the embodiment of the present application is referred to Figure 1 , which includes two half couplings 3 and a flexible body 1. In the present application, the flexible body 1 can be star-shaped or plum-shaped and is made of polyurethane. Specifically, the flexible body 1 includes an outer protective ring 11, an inner protective ring 12 and a plurality of intermediate bodies 13. The outer protective ring 11 and the inner protective ring 12 are concentrically arranged, and the plurality of intermediate bodies 13 are evenly arranged between the outer protective ring 11 and the inner protective ring 12, and the two ends of the intermediate body 13 are integrally connected with the outer protective ring 11 and the inner protective ring 12.

[0030] Reference Figure 2 and Figure 3 The connection between the end of the intermediate body 13 and the outer guard ring 11 and the inner guard ring 12 is provided with an arc-shaped transition groove 131, which achieves the effect of reducing the stress concentration at the connection between the intermediate body 13 and the outer guard ring 11 and the inner guard ring 12, thereby effectively improving the stability of the connection between the intermediate body 13 and the inner guard ring 12 and the outer guard ring 11.

[0031] During assembly, the inner retainer 12 and the intermediate body 13 are arranged between the two half couplings 3, and the two half couplings 3 transmit load and output torque through the intermediate body 13. The outer retainer 11 is arranged on the circumference of the two half couplings 3 to strengthen the connection between the multiple intermediate bodies 13.

[0032] Furthermore, a support buffer 14 is provided in the transition groove 131, and the support buffer 14 is filled in the transition groove 131 and bonded to the intermediate body 13. The support buffer 14 can be made of silicone or rubber material, which has good elasticity and low modulus characteristics. In addition, the elastic modulus of the support buffer 14 is less than or equal to the elastic modulus of the intermediate body 13, so that part of the alternating load can be absorbed during operation, reducing the deformation at the connection between the intermediate body 13 and the outer retaining ring 11 and the inner retaining ring 12, and further reducing the risk of fracture.

[0033] Therefore, by providing an arc-shaped transition groove 131 between the outer retaining ring 11, the inner retaining ring 12 and the intermediate body 13, the stress at the connection between the intermediate body 13 and the outer retaining ring 11 and the inner retaining ring 12 can be effectively dispersed, reducing the risk of fracture. At the same time, by providing a support buffer 14 in the transition groove 131, the alternating load can be further absorbed during the working process, the deformation of the intermediate body 13 can be reduced, and the stability and life of the coupling can be improved. This design not only improves the reliability of the coupling, but also reduces the maintenance cost, and is suitable for equipment with high-frequency load changes such as sorting machines.

[0034] Furthermore, a safety bracket 2 is provided inside the flexible body 1. In the present application, the flexible body 1 is wrapped around the safety bracket 2 by injection molding, and in order to improve the bonding strength between the flexible body 1 and the safety bracket 2, the safety bracket 2 can be made of polyethylene, polystyrene, polypropylene and other materials, which have good compatibility with polyurethane, and the melting temperature is close to the injection molding temperature of polyurethane. When the flexible body 1 is injection molded, since the temperature range of polyurethane injection is generally between 100℃-130℃, the melting point range of polyethylene is generally between 100℃ and 130℃, the melting point range of polystyrene is between 100℃ and 140℃, and the melting point range of polypropylene is between 130℃ and 170℃. Therefore, when the high-temperature polyurethane contacts the safety bracket 2, the surface of the safety bracket 2 is softened by the high temperature and melts with the polyurethane, so that the safety bracket 2 and the flexible body 1 are connected as one.

[0035] Furthermore, the support body 21 includes two support plates 211 and a holder 212 disposed opposite to each other. The holder 212 includes a center block 2122 and two sets of connecting plates 2121. The center block 2122 is made of the same polyurethane material as the flexible body 1, and has good elasticity and durability. In addition, the center block 2122 can be integrated with the flexible body 1 to ensure that the two are closely combined, thereby improving the integrity of the insurance bracket 2 and the flexible body 1.

[0036] The two groups of connecting plates 2121 are respectively located on opposite sides of the central block 2122, and the two groups of connecting plates 2121 are respectively connected to the two supporting plates 211 in a one-to-one correspondence. Each group of connecting plates 2121 includes two spaced support plates, one end of which is fixedly connected to the central block 2122, and the other end is connected to the supporting plate 211. Both support plates are arc-shaped structures, and the protrusions of the two support plates are arranged oppositely, which can further improve the deformation capacity of the support plates and enhance the overall elasticity of the flexible body 1.

[0037] Reference Figure 2 and Figure 3In addition, the safety bracket 2 also includes an outer connecting ring 22 arranged inside the outer retaining ring 11 and an inner connecting ring 23 arranged inside the inner retaining ring 12. As one of the implementation methods of the embodiment of the present application, the outer connecting ring 22 and the inner connecting ring 23 both include a plurality of arc-shaped plates, which are arranged between two adjacent support bodies 21, and the opposite support plates 211 in the two adjacent support bodies 21 are fixedly connected to the arc-shaped plates, which can effectively improve the integrity between the two adjacent support bodies 21, thereby improving the connection strength between the plurality of support bodies 21 and the intermediate body 13, so as to improve the load capacity of the flexible body 1.

[0038] Reference Figure 4 and Figure 5 As a preferred implementation of the embodiment of the present application, the outer connecting ring 22 and the inner connecting ring 23 are fixedly connected to the retaining frame 212. On the premise of ensuring the structural stability and integrity of the safety bracket 2, the support plate 211 independently supports the intermediate body 13 to enhance the deformation ability and load capacity of the intermediate body 13.

[0039] Therefore, by setting the safety bracket 2 in the flexible body 1, the load capacity of the flexible body 1 can be effectively improved, and it can play a role of insurance when the flexible body 1 breaks, thereby reducing the risk of equipment damage. The support plate 211 and the retaining frame 212 of the safety bracket 2 play a good supporting role for the intermediate body 13, ensuring that the intermediate body 13 has good elastic deformation. At the same time, multiple support bodies 21 are connected as one through the external connecting ring 22 and the internal connecting ring 23, further improving the overall strength and stability of the flexible body 1. This design not only improves the reliability and safety of the coupling, but also extends its service life, and is suitable for equipment with high-frequency load changes such as sorting machines.

[0040] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coupling used for transmission of a sorting machine, characterized in that: The invention has a flexible body (1); the flexible body (1) comprises an outer protective ring (11), an inner protective ring (12) and an intermediate body (13); The outer guard ring (11) and the inner guard ring (12) are arranged concentrically, the intermediate body (13) is arranged between the outer guard ring (11) and the inner guard ring (12), and both ends of the intermediate body (13) are integrally formed with the outer guard ring (11) and the inner guard ring (12); arc-shaped transition grooves (131) are provided between the ends of the intermediate body (13) and the outer guard ring (11) and the inner guard ring (12).

2. The coupling used for sorting machine transmission according to claim 1, characterized in that: A supporting buffer member (14) is provided in the transition groove (131); the supporting buffer member (14) is filled in the transition groove (131) and is bonded to the intermediate body (13); The supporting buffer member (14) has elasticity, and the elastic modulus of the supporting buffer member (14) is less than or equal to the elastic modulus of the intermediate body (13).

3. The coupling used for sorting machine transmission according to claim 1, characterized in that: A safety bracket (2) is arranged inside the flexible body (1), and the safety bracket (2) comprises a support body (21) arranged inside the intermediate body (13); The support body (21) comprises two support plates (211) arranged back to back and a retaining frame (212) arranged between the two support plates (211); the intermediate body (13) is coated on the side walls of the support plates (211) and the retaining frame (212) and is fixedly connected to the support plates (211) and the retaining frame (212).

4. The coupling used for transmission of a sorting machine according to claim 3 is characterized in that: The retaining frame (212) comprises a central block (2122) and two groups of connecting plates (2121), the two groups of connecting plates (2121) are respectively located on two opposite sides of the central block (2122), and the two groups of connecting plates (2121) are respectively connected to the two supporting plates (211) in a one-to-one correspondence; Each group of the connecting plates (2121) comprises two spaced-apart support plates, one end of the support plate is fixedly connected to the central block (2122), and the other end is connected to the support plate (211), and the two support plates are respectively located at the two ends of the support plate (211).

5. The coupling used for transmission of a sorting machine according to claim 4, characterized in that: The two support plates are both configured as arc-shaped plates, and the protrusions of the two support plates are arranged opposite to each other; and the two support plates are both elastic.

6. The coupling used for transmission of a sorting machine according to claim 4, characterized in that: The material of the central block (2122) is consistent with the material of the flexible body (1).

7. The coupling used for transmission of a sorting machine according to claim 3, characterized in that: The safety bracket (2) further comprises an outer connecting ring (22) arranged inside the outer protective ring (11) and an inner connecting ring (23) arranged inside the inner protective ring (12); The intermediate body (13) is provided in plurality, and the support body (21) and the intermediate body (13) are provided in plurality correspondingly; the support body (21) is provided between an outer connecting ring (22) and an inner connecting ring (23), and both the outer connecting ring (22) and the inner connecting ring (23) are fixedly connected to the support body (21).

8. The coupling used for transmission of a sorting machine according to claim 7, characterized in that: The outer connecting ring (22) and the inner connecting ring (23) both comprise a plurality of arc-shaped plates, the arc-shaped plates being arranged between two adjacent supporting bodies (21), and the opposing supporting plates (211) in the two adjacent supporting bodies (21) being fixedly connected to the arc-shaped plates.

9. The coupling used for transmission of a sorting machine according to claim 7, characterized in that: The outer connecting ring (22) and the inner connecting ring (23) are both fixedly connected to the retaining frame (212).

10. The coupling used for transmission of a sorting machine according to claim 3, characterized in that: The safety bracket (2) is made of a material that is compatible with polyurethane, and the elastic modulus of the safety bracket (2) is greater than the elastic modulus of the flexible body (1).

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