Flexible coupling and air compressor

Abstract

The flexible coupler comprises a connecting shaft and a connecting body, the end of the connecting shaft extends outwards to form a connecting assembly, the connecting shaft penetrates through the connecting assembly and extends outwards to form an extending end, the flexible coupler further comprises a belt pressing assembly, the belt pressing assembly is detachably buckled to the end of the connecting shaft, and the connecting body is connected with the connecting shaft. The belt pressing assembly comprises a connecting body and a connecting assembly, the connecting body and the connecting assembly form a containing groove, the connecting body is approximately spherical and is integrally formed, the two ends of the connecting body are connecting ends, the connecting ends at the two ends are connected through a belt, and the connecting ends can be arranged on the extending ends in a sleeving mode and locked in the containing groove through the belt pressing assembly. When in use, the coupling can be directly mounted on a connecting shaft in a sleeving manner, so that the mounting and dismounting processes of the connecting body are simplified, secondly, due to the integrated arrangement, the service life of the coupling is greatly prolonged, the defect of stress concentration is weakened, and when in use, a belt only receives static pressure and tensile force of the belt.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and in particular to a flexible coupling and an air compressor. Background Art

[0002] The coupling, also known as the coupling, is a mechanical component whose main function is to connect the driving shaft and the driven shaft to transmit motion and torque. The coupling includes rigid coupling and flexible coupling. The rigid coupling has a simple structure, low manufacturing cost, and is easy to disassemble and assemble. While ensuring a high coaxiality of the two shafts, the rigid coupling has higher reliability; the flexible coupling has a buffering and shock absorbing effect, so it has a wide range of usage scenarios.

[0003] Generally speaking, the flexible coupling connection method is that the ends of the flexible belt are fixed by pressing plates and bolts, thereby connecting the driving shaft and the driven shaft at both ends. The operation is repeated to fix 6 to 8 single belts. The bolt fixing method will not only cause stress concentration on the belt at the position where the bolt passes through, but also because the flexible belt is not integrally formed, its quality cannot be guaranteed to be uniform, so some of the flexible belts and other flexible belts will be unevenly stressed, which will easily cause the belt to break or be damaged over time. Summary of the invention

[0004] The object of the present invention is to provide a flexible coupling and an air compressor in view of the above problems.

[0005] The present invention includes a connecting shaft and a connecting body, the end of the connecting shaft extends outward to form a connecting component, the connecting shaft passes through the connecting component and extends outward to form an extended end, and also includes a pressure belt assembly, the pressure belt assembly is detachably buckled on the end of the connecting shaft and forms a receiving groove with the connecting component, the connecting body is nearly spherical and is integrally formed, both ends of the connecting body are connecting ends, the connecting ends at both ends are connected by belts, the connecting ends can be sleeved on the extending ends and locked in the receiving groove by the pressure belt assembly, and the connecting body can be directly sleeved on the connecting shaft when in use, thereby simplifying the installation and disassembly process of the connecting body, and secondly, the integrated setting greatly improves the service life of the coupling and weakens the disadvantage of stress concentration, so that when in use, the belt only receives static pressure and the tension of the belt itself.

[0006] A force-bearing component is provided on at least one side inside and outside the connecting end, and a pressure groove is provided on the surface of the pressure belt component and / or the connecting component in contact with the surface where the force-bearing component is located. By providing the force-bearing component, when the coupling rotates at high speed, the connecting body is affected by the centrifugal force and tends to expand outward. The cooperation between the force-bearing component and the pressure groove can transfer the centrifugal force acting on the connecting body to the force-bearing component, and the connecting body is reversely squeezed during the cooperation between the force-bearing component and the pressure groove, thereby increasing the static friction between the connecting body and the pressure belt component and the connecting component, thereby making it more stable during use.

[0007] Specifically, the force-bearing component includes a tongue, and the cross-section of the tongue is in the shape of a teardrop. It can be understood that the tongue starts from one side of the connecting end, and the curvature of the tongue extending toward the belt direction gradually increases. Through the above-mentioned arrangement, when the connecting body is subjected to centrifugal force, as the centrifugal force gradually increases, the curvature of the part of the tongue in contact with the pressure groove also gradually increases, thereby making the static pressure between the connecting body and the connecting shaft increase in a linear manner. Therefore, the forces acting on all aspects of the belt can be stabilized and balanced, thereby improving the overall reliability of the design.

[0008] Specifically, a partition component is provided between the outer edges of the connecting component and the belt pressing component, and the partition component is used to separate the belts. The partition component can prevent slipping or idling of the connecting shaft during startup. In addition, the partition component can be provided to allow lubricating oil or other cooling oil to be dripped when the connecting shaft is connected to the connector, so that the coupling is in a more suitable environment, thereby improving the overall life of the coupling.

[0009] Another object of the present invention is to provide an air compressor, comprising a flexible coupling, an engine module and a screw machine module, wherein the engine module and the screw machine module are separately arranged, and the output shaft of the engine module is connected to the input shaft of the screw machine module through the flexible coupling. By separately arranging the engine module and the screw machine module, it is not only convenient to quickly disassemble and repair in the event of a fault, but also more convenient for cableway transportation in mountainous areas.

[0010] Specifically, the engine module includes a first frame, an engine, a radiator, and a post-processing system. The engine, the radiator, and the post-processing system are all fixed on the frame. The air compressor is used to provide power for compressed air. The radiator can dissipate heat for the engine. The exhaust gas discharged by the engine is processed by the post-processing system and then discharged. The output shaft of the engine is connected to the connecting shaft of the flexible coupling.

[0011] Specifically, the screw machine module includes a second frame, a screw machine and an oil-gas barrel assembly, the screw machine and the oil-gas barrel assembly are fixed on the second frame, the input shaft of the screw machine is connected to the flexible coupling, the air is sucked in through the air inlet of the screw machine, flows into the oil-gas barrel assembly after being compressed, and is discharged from the air outlet of the oil-gas barrel assembly after the liquid oil in the gas is separated by the oil-gas barrel assembly.

[0012] Specifically, the oil and gas barrel assembly includes a cylinder, an air inlet pipe is provided at the middle and upper part of the cylinder, an air outlet pipe is provided at the top of the cylinder, a guard tube is provided at the top of the cylinder, an oil and gas separator is provided in the guard tube, and also includes an oil outlet pipe, which is provided on the cylinder and extends to the bottom of the cylinder. The air inlet pipe is used to introduce compressed gas into the cylinder, and the oil and gas are separated by the oil and gas separator, so that the oil gathers at the bottom of the cylinder and refluxes through the oil outlet pipe for recycling, and the gas flows out from the upper part of the cylinder.

[0013] Specifically, the air inlet pipe is connected to the interior of the cylinder, and the two are connected in a tangential manner. By connecting the air inlet pipe to the interior of the cylinder tangentially, the gas entering the cylinder can make a spiral motion along the inner wall of the cylinder, which is less likely to cause turbulence and local high pressure to cause dangerous situations, thereby ensuring that the gas in the cylinder can maintain a stable pressure while also ensuring a stable output pressure.

[0014] Specifically, the fence tube and the inner wall of the cylinder are spaced apart, and there is an airflow layer between the two. Air flows into the airflow layer from the air inlet pipe and makes a spiral motion along the airflow layer of the fence tube, squeezing the internal gas to flow into the air outlet pipe, and enters the oil-gas separator from the bottom of the fence tube to separate the grease, and the high-pressure gas after the grease is separated is discharged to the outside through the air outlet pipe at the top.

[0015] Beneficial effects:

[0016] The connector can be directly installed on the connecting shaft during use, thereby simplifying the installation and removal process of the connector. Secondly, the integrated setting greatly increases the service life of the coupling and weakens the disadvantage of stress concentration, so that when in use, the belt only receives static pressure and the tension of the belt itself;

[0017] Through the above arrangement, when the connecting body is subjected to centrifugal force, as the centrifugal force gradually increases, the curvature of the tongue in contact with the pressure groove also gradually increases, thereby making the static pressure between the connecting body and the connecting shaft increase in a linear manner, thereby making it possible to achieve stability and balance in the forces on all sides of the belt, thereby improving the overall reliability of the design;

[0018] By separating the engine module and the screw machine module, it is not only convenient for quick disassembly and maintenance in the event of a failure, but also more convenient for cableway transportation in mountainous areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : It is a schematic diagram of the overall structure of the flexible coupling of the invention;

[0020] Figure 2 :for Figure 1 Schematic diagram of the structure of the middle belt;

[0021] Figure 3 :for Figure 1 Schematic diagram of the structure of the middle connecting shaft;

[0022] Figure 4 : is a schematic cross-sectional structure diagram of the overall flexible coupling of the present invention;

[0023] Figure 5 : is a schematic diagram of the overall structure of the air compressor of the present invention;

[0024] Figure 6 : is a schematic diagram of the structure of the engine module of the present invention;

[0025] Figure 7 : It is a structural schematic diagram of the screw machine module of the present invention;

[0026] Figure 8 : It is a structural schematic diagram of the oil and gas barrel assembly of the present invention;

[0027] Fig. 9 : It is a schematic diagram of the cross-sectional structure of the oil and gas barrel assembly of the present invention.

[0028] In the figure: 10, flexible coupling; 20, engine module; 30, screw machine module; 101, connecting shaft; 102, connector; 1011, connecting assembly; 1012, extension end; 1013, receiving groove; 1014, partition assembly; 1015, pressure groove; 1021, connecting end; 1022, belt; 1023, force-bearing assembly; 201, first frame; 202, engine; 203, radiator; 204, after-treatment system; 301, second frame; 302, screw machine; 303, oil and gas barrel assembly; 3031, cylinder; 3032, air inlet pipe; 3033, air outlet pipe; 3034, oil outlet pipe; 3035, fence; 3036, air flow layer; 3037, oil and gas separator. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] Embodiment 1: One object of the present invention is to provide a flexible coupling.

[0032] See also Figure 1 , including a connecting shaft 101 and a connecting body 102, the end of the connecting shaft 101 extends outward to form a connecting assembly 1011, the connecting shaft 101 passes through the connecting assembly 1011 and extends outward to form an extended end 1012, and also includes a pressing belt assembly, the pressing belt assembly is detachably buckled on the end of the connecting shaft 101, and forms a receiving groove 1013 with the connecting assembly 1011, the connecting body 102 is nearly spherical and is integrally formed, the two ends of the connecting body 102 are connecting ends 1021, and the connecting ends The connecting end 1021 is connected by a belt 1022. The connecting end 1021 can be sleeved on the extending end 1012 and locked in the accommodating groove 1013 by the pressing belt assembly. The connecting body 102 is set and can be directly sleeved on the connecting shaft 101 for installation when in use, thereby simplifying the installation and disassembly process of the connecting body 102. Secondly, the integrated setting greatly improves the service life of the coupling and weakens the disadvantage of stress concentration, so that when in use, the belt 1022 only receives static pressure and the tension of the belt 1022 itself.

[0033] It can be understood that the connecting body 102 includes a connecting end 1021 and a belt 1022, which are integrally formed and are nearly spherical or elliptical as a whole, wherein the connecting component 1011 includes a connecting plate, the middle part of the connecting plate is sleeved on the end of the connecting shaft 101, and the end of the connecting shaft 101 slightly passes through the middle part of the connecting plate, and the connecting plate and the connecting shaft 101 are welded or integrally formed to form a connecting component 1011, and bolt holes are provided on the inner side of the connecting shaft 101 and the outer edge side of the connecting plate, and the corresponding belt pressing component includes a pressure plate, and bolt holes are also provided on the inner side and outer edge side of the pressure plate, and the two can be detachably connected by bolts.

[0034] In a specific application, the end of the connecting end 1021 is sleeved on the extending end 1012, and the pressing plate is buckled on the connecting assembly 1011, and the two are fixed by bolts.

[0035] A force-bearing component 1023 is provided on at least one side inside and outside the connecting end 1021, and a pressure groove 1015 is provided on the surface of the pressure belt component and / or the connecting component 1011 in contact with the surface where the force-bearing component 1023 is located. By providing the force-bearing component 1023, when the coupling rotates at a high speed, the connecting body 102 is affected by the centrifugal force and tends to expand outward. The cooperation between the force-bearing component 1023 and the pressure groove 1015 can transfer the centrifugal force acting on the connecting body 102 to the force-bearing component 1023, and in the process of cooperation between the force-bearing component 1023 and the pressure groove 1015, the connecting body 102 is reversely squeezed, thereby increasing the static friction between the connecting body 102 and the pressure belt component and the connecting component 1011, thereby making it more stable during use.

[0036] Specifically, the force-bearing component 1023 includes a tongue, and the cross-section of the tongue is in the shape of a teardrop. It can be understood that the tongue starts from one side of the connecting end 1021, and the curvature of the tongue extending toward the direction of the belt 1022 gradually increases. Through the above-mentioned arrangement, when the connecting body 102 is subjected to centrifugal force, as the centrifugal force gradually increases, the curvature of the part of the tongue in contact with the pressure groove 1015 also gradually increases, thereby making the static pressure between the connecting body 102 and the connecting shaft 101 increase in a linear manner. Therefore, the forces on all aspects of the belt 1022 can be stabilized and balanced, thereby improving the overall reliability of the design.

[0037] It can be understood that the relationship between the length and thickness of the tongue is:

[0038] L = 3D;

[0039] Wherein: L is the length of the force-bearing component 1023, and D is the thickness of the force-bearing component 1023.

[0040] Specifically, a partition component 1014 is provided between the outer edge of the connecting component 1011 and the pressing belt component, and the partition component 1014 is used to separate the belt 1022. By providing the partition component 1014, slipping or idling of the connecting shaft 101 can be prevented during the startup process. In addition, by providing the partition component 1014, lubricating oil or other cooling oil can be dripped when the connecting shaft 101 is connected to the connecting body 102, so that the coupling is in a more suitable environment, thereby improving the overall life of the coupling.

[0041] It can be understood that the height of the entire extension end 1012 and the pressure groove 1015 is slightly larger than the total thickness of the force-bearing component 1023 and the connecting end 1021. During operation, the belt 1022 is first driven to rotate by the partition component 1014. After reaching a certain speed, the connecting body 102 is subjected to the outward centrifugal force, and the force-bearing component is extended outward, squeezing the connecting end 1021 to contact the pressure plate. As the speed increases, the centrifugal force becomes greater, and the overall extension trend of the connecting body 102 becomes more obvious. At this time, there is basically no interaction force between the partition component 1014 and the belt 1022, and the force-bearing component 1023 is extended outward to squeeze the connecting end 1021 to contact the pressure plate, so that the interaction force is transferred to the force-bearing component 1023, thereby ensuring the optimal state of the connecting body 102 and extending its service life.

[0042] Implementation benefit 2: This embodiment provides an air compressor,

[0043] It includes a flexible coupling 10, an engine module 20 and a screw machine module 30. The engine module 20 and the screw machine module 30 are separately arranged. The output shaft of the engine module 20 and the input shaft of the screw machine module 30 are connected through the flexible coupling 10. By separately arranging the engine module 20 and the screw machine module 30, it is not only convenient to quickly disassemble and repair when a fault occurs, but also more convenient for cableway transportation in mountainous areas.

[0044] Specifically, the engine module 20 includes a first frame 201, an engine 202, a radiator 203, and a post-processing system 204. The engine 202, the radiator 203, and the post-processing system 204 are all fixed on the frame. The air compressor is used to provide power for compressed air. The radiator 203 can dissipate heat for the engine 202. The exhaust gas discharged by the engine 202 is processed by the post-processing system 204 and then discharged. The output shaft of the engine 202 is connected to the connecting shaft 101 of the flexible coupling 10.

[0045] Specifically, the screw machine module 30 includes a second frame 301, a screw machine 302 and an oil-gas barrel assembly 303. The screw machine 302 and the oil-gas barrel assembly 303 are fixed on the second frame 301. The input shaft of the screw machine 302 is connected to the flexible coupling 10. Air is sucked in through the air inlet of the screw machine 302, flows into the oil-gas barrel assembly 303 after being compressed, and is discharged from the air outlet of the oil-gas barrel assembly 303 after the liquid oil in the gas is separated by the oil-gas barrel assembly 303.

[0046] Specifically, the oil and gas barrel assembly 303 includes a cylinder 3031, an air inlet pipe is provided in the middle and upper part of the cylinder 3031, an air outlet pipe is provided at the top of the cylinder 3031, a guardrail is provided at the top of the cylinder 3031, an oil-gas separator is provided in the guardrail, and also includes an oil outlet pipe, which is provided on the cylinder 3031 and extends to the bottom of the cylinder 3031. The air inlet pipe is used to introduce compressed gas into the cylinder 3031, and the oil and gas are separated by the oil-gas separator, so that the oil gathers at the bottom of the cylinder 3031 and refluxes through the oil outlet pipe for recycling, and the gas flows out from the upper part of the cylinder 3031.

[0047] Specifically, the air inlet pipe 3032 is connected to the interior of the cylinder 3031, and the two are connected in a tangential manner. By connecting the air inlet pipe 3032 to the interior of the cylinder 3031 tangentially, the gas entering the cylinder 3031 can make a spiral motion along the inner wall of the cylinder 3031, and it is less likely to have turbulence or local high pressure that can cause danger, so that the gas in the cylinder 3031 can maintain a stable pressure while also ensuring a stable output pressure.

[0048] Specifically, the fence 3035 and the inner wall of the cylinder 3031 are spaced apart, and there is an airflow layer 3036 between the two. Air flows into the airflow layer 3036 from the air inlet pipe 3032, and then makes a spiral motion along the airflow layer 3036 of the fence 3035, squeezing the internal gas to flow into the air outlet pipe 3033, and enters the oil-gas separator 3037 from the bottom of the fence 3035 to separate the grease, and the high-pressure gas after the grease is separated is discharged to the outside through the air outlet pipe 3033 at the top.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flexible coupling, comprising a connecting shaft and a connecting body, characterized in that: The end of the connecting shaft extends outward to form a connecting component, the connecting shaft passes through the connecting component and extends outward to form an extended end, and also includes a pressing belt component, the pressing belt component is detachably buckled on the end of the connecting shaft and forms a receiving groove with the connecting component, the connecting body is nearly spherical and is integrally formed, both ends of the connecting body are connecting ends, the connecting ends at both ends are connected by belts, the connecting end can be sleeved on the extending end, and locked in the receiving groove by the pressing belt assembly.

2. The flexible coupling according to claim 1, characterized in that: A force-bearing component is arranged on at least one of the inner and outer sides of the connecting end, and a pressure groove is arranged on the surface of the pressing belt component and / or the connecting component in contact with the surface where the force-bearing component is located.

3. The flexible coupling according to claim 2, characterized in that: The force-bearing component comprises a latch tongue which is in a water drop shape.

4. The flexible coupling according to claim 1, characterized in that: A separation component is arranged between the outer edges of the connecting component and the belt pressing component, and the separation component is used to separate the belts.

5. An air compressor, comprising the flexible coupling, engine module and screw machine module according to any one of claims 1 to 4, characterized in that: The engine module and the screw machine module are separately arranged, and the output shaft of the engine module is connected to the input shaft of the screw machine module through the flexible coupling.

6. The air compressor according to claim 5, characterized in that: The engine module includes a first frame, an engine, a radiator, and a post-processing system. The engine, the radiator, and the post-processing system are all fixed on the frame. The air compressor is used to provide power for compressed air. The radiator can dissipate heat for the engine. The exhaust gas discharged by the engine is processed by the post-processing system and then discharged. The output shaft of the engine is connected to the connecting shaft of the flexible coupling.

7. The air compressor according to claim 5, characterized in that: The screw machine module includes a second frame, a screw machine and an oil-gas barrel assembly, wherein the screw machine and the oil-gas barrel assembly are fixed on the second frame, and the input shaft of the screw machine is connected to the flexible coupling. Air is sucked in through the air inlet of the screw machine, flows into the oil-gas barrel assembly after being compressed, and is discharged from the air outlet of the oil-gas barrel assembly after the liquid oil in the gas is separated by the oil-gas barrel assembly.

8. The air compressor according to claim 7, characterized in that: The oil and gas barrel assembly includes a cylinder, an air inlet pipe is provided in the middle and upper part of the cylinder, an air outlet pipe is provided at the top of the cylinder, a guard tube is provided at the top of the cylinder, an oil and gas separator is provided in the guard tube, and also includes an oil outlet pipe, which is provided on the cylinder and extends to the bottom of the cylinder.

9. The air compressor according to claim 8, characterized in that: The air inlet pipe is communicated with the interior of the cylinder, and the two are connected in a tangential manner.

10. The air compressor according to claim 8, characterized in that: The fence tube is spaced apart from the inner wall of the cylinder, and an airflow layer is formed between the two. Air flows into the airflow layer from the air inlet pipe and makes a spiral motion along the airflow layer of the fence tube. Then, air enters the oil-gas separator from the bottom of the fence tube to separate grease, and the high-pressure gas after grease separation is discharged to the outside through the air outlet pipe at the top.

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