Elastic coupling

Abstract

The utility model discloses an elastic coupling, which comprises a gear ring, a plurality of elastic elements, a plurality of elastic elements, a plurality of elastic elements, a plurality of elastic elements and a plurality of elastic elements, and is characterized in that the inner diameter of the gear ring is provided with a circle of inner teeth; the shell assembly is connected to the gear ring so that a circle of cavity can be formed between the shell assembly and the gear ring, and an oil injection structure is arranged on the shell assembly; the limiting blocks are fixed to the shell assembly and arranged between every two adjacent tooth grooves; each elastic assembly is arranged between every two adjacent limiting blocks and comprises at least three elastic pieces arranged in a stacked mode and a pin column used for being connected with the elastic pieces, the elastic pieces comprise at least one main elastic piece, at least one first auxiliary elastic piece and at least one second auxiliary elastic piece which are sequentially arranged, one end of each main elastic piece is arranged in the corresponding tooth groove, and the other end of each first auxiliary elastic piece is arranged in the corresponding second auxiliary elastic piece. The first auxiliary elastic piece and the second auxiliary elastic piece are asymmetrically arranged on the two sides of the main elastic piece. And the gear disc is fixed outside the shell assembly and is coaxial with the gear ring. And the elastic piece adopts a sheet structure, so that the requirement on the performance of the elastic piece is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to an elastic coupling. Background Art

[0002] Elastic couplings have good damping characteristics, good elasticity, large elastic element changes, compact structure, safety and reliability. They are suitable for shafting with large load changes and torque vibrations. They are mostly used in diesel engine power units such as ships, internal combustion locomotives, diesel generator sets, heavy vehicles and industrial diesel engine power units. They are used to adjust the natural frequency of torque vibrations in the shafting transmission system and reduce the amplitude during resonance.

[0003] The elastic coupling is a rotating part that connects two shafts. It rotates together without disengaging during the transmission of motion and power. In addition, the elastic coupling can also compensate for the relative displacement of the two shafts, buffer and reduce vibration, and provide safety protection.

[0004] The elastic coupling transmits torque through elastic elements such as elastic components, and plays an elastic and damping role in the torsional direction, thereby extending the life of the transmission system and playing a significant role in reducing noise and vibration resistance.

[0005] The existing elastic coupling adopts the structure of "an elastic coupling" with application number CN201710151672.6, which includes a base, a bearing groove is provided at the center of the base, a rolling bearing is installed in the bearing groove, the inner ring of the rolling bearing is equipped with an input disc, N arc spring grooves evenly distributed along the circumferential direction are provided in the base, a lug is provided at the end of each arc spring groove, a pressure spring is provided in each arc spring groove, an axle pin and N arc grooves are provided on the side of the input disc opposite to the base, the axle pin cooperates with the rolling bearing, the positions of the N arc grooves correspond one by one to the positions of the N arc spring grooves on the base, after the input disc is assembled with the base, the N arc grooves and the N arc spring grooves constitute N spaces for accommodating pressure springs; a first boss and a second boss are provided at both ends of the rolling bearing, and a gap is left between the input disc and the base after the two are assembled.

[0006] In the prior art, springs are used to achieve shock absorption, which places high requirements on the performance of the springs. Utility Model Content

[0007] The utility model aims to overcome the disadvantages of the prior art and provide an elastic coupling, wherein the elastic member adopts a sheet structure, thereby greatly reducing the requirements on the performance of the elastic sheet.

[0008] The purpose of the utility model is achieved through the following technical solutions:

[0009] The utility model provides an elastic coupling, comprising:

[0010] A gear ring, wherein the gear ring has a circle of internal teeth on its inner diameter and at least two tooth grooves on its outer diameter;

[0011] A housing component, wherein the housing component is connected to the gear ring to form a circle of cavity between the housing component and the gear ring, and an oil injection structure is provided on the housing component;

[0012] A limit block, the limit block is fixed on the housing assembly and is placed between two adjacent tooth grooves;

[0013] An elastic component, the elastic component is placed between two adjacent limit blocks, the elastic component includes at least three stacked elastic sheets and a pin for connecting the elastic sheets, the elastic sheets include at least one main elastic sheet, at least one first auxiliary elastic sheet and at least one second auxiliary elastic sheet arranged in sequence, one end of the main elastic sheet is placed in the tooth groove, and the first auxiliary elastic sheet and the second auxiliary elastic sheet are asymmetrically arranged on both sides of the main elastic sheet;

[0014] A gear plate is fixed outside the housing assembly and is coaxially arranged with the gear ring.

[0015] The utility model has the following advantages:

[0016] The present invention adopts a plurality of stacked springs to achieve buffering and vibration absorption effects. The spring structure adopts a main spring and an asymmetrically arranged auxiliary spring structure, which enhances the strength of the main spring bending deformation while achieving unidirectional transmission and reduces the requirements for the spring performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional diagram of the elastic coupling of the utility model, wherein the viewing angle is the viewing angle from one side of the gear plate;

[0019] Figure 2 It is a cross-sectional view of the elastic coupling of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the elastic coupling of the utility model, wherein the viewing angle is the viewing angle from one side of the side plate;

[0021] Figure 4 for Figure 3 Take off the structural diagram of the side panel;

[0022] Figure 5It is a schematic diagram of the structure of the gear ring, some limit blocks and elastic components;

[0023] Figure 6 This is a schematic diagram of the installation structure of the first pair of spring pieces, gaskets, and pins;

[0024] Figure 7 A structural schematic diagram of an elastic component. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model discloses an elastic coupling, such as Figures 1 to 7 As shown, the elastic coupling includes a gear ring 1, a housing component, a stopper 3, an elastic component and a gear plate 4. Among them, a circle of internal teeth 11 is arranged on the inner diameter of the gear ring 1 and at least two tooth grooves 12 are arranged on the outer diameter. The housing component is connected to the gear ring 1 to form a circle of cavity between the gear ring 1 and the housing component, and an oil injection structure is arranged on the housing component to inject oil into the cavity. The stopper 3 is fixed to the housing component and is placed between two adjacent tooth grooves 12. The elastic component is placed between two adjacent stopper blocks 3, and the elastic component includes at least three stacked springs and a pin 24 for connecting the springs. The springs include at least one main spring 21, at least one first auxiliary spring 22 and at least one second auxiliary spring 23 arranged in sequence, one end of the main spring 21 is placed in the tooth groove 12, and the first auxiliary spring 22 and the second auxiliary spring 23 are asymmetrically arranged on both sides of the main spring 21. The gear plate 4 is fixed outside the housing component and is coaxially arranged with the gear ring 1.

[0032] With the above structure, the elastic components are radially distributed to form an equal-strength beam structure. The first auxiliary springs 22 and the second auxiliary springs 23 in all the elastic components have the same direction relative to the main springs 21. Figure 4 , 5 As shown. The first auxiliary spring piece 22 and the second auxiliary spring piece 23 are asymmetrically arranged on both sides of the main spring piece 21 to ensure unidirectional transmission. When there are multiple first auxiliary spring pieces 22 and second auxiliary spring pieces 23, their lengths are different. Among them, the main spring piece 21 has the longest length, and the lengths of its auxiliary spring pieces gradually decrease towards both sides.

[0033] The elastic coupling can be used in diesel engine systems to adjust the natural frequency of torque vibration of the shaft transmission system and reduce the amplitude during resonance. It transmits torque through elastic components such as elastic components, plays an elastic and damping role in the torsion direction, and plays a significant role in reducing noise, vibration and vibration resistance; in addition, it also has the functions of compensating the relative displacement of the two shafts, buffering and vibration reduction, and safety protection, thereby extending the life of the transmission system.

[0034] During installation, install the gear plate on the crankshaft mounting flange interface of the diesel engine system. When the diesel engine system is working, look at the starter gear plate end from the side plate, the diesel engine rotates counterclockwise, driving the gear plate to rotate, and the gear plate drives the housing component and the limit block of the elastic coupling to rotate. One end of the main shrapnel of the elastic component is stuck in the tooth groove 12 of the gear ring 1, thereby driving the gear ring to rotate; the gear ring drives the load rotation of the 10V110 diesel engine system. Through this process, the torque of the entire shaft system is transmitted, the natural frequency of the torque vibration of the shaft system transmission system is adjusted, the amplitude at resonance is reduced, and the noise, vibration resistance and vibration prevention can be greatly reduced. It can also compensate for the radial relative displacement of the two shafts, buffer and reduce vibration, and safety protection functions, thereby extending the life of the transmission system.

[0035] When the coupling transmits torque, the two ends of the main spring sheet bend and deform relative to each other, causing the housing assembly and the limit block to twist at a certain angle relative to the gear ring; in order to increase the buffering and vibration absorption effect of the coupling, the cavity between each set of spring sheets is filled with lubricating oil. Under the action of variable load, the spring sheet bends and deforms, forming a pressure change in the oil cavity, forcing the lubricating oil to flow from one side to the other through the gaps on both sides of the spring sheet, generating a large viscous friction damping. The biggest feature of this elastic coupling is its good damping performance, and the lubricating oil can also reduce the friction and wear directly caused by the bending and deformation of the spring sheet.

[0036] In order to adjust the thickness of the elastic component, such as Figure 6 As shown, a gasket 25 is provided between two adjacent spring pieces. In order to enhance the lubricating oil entering between the spring pieces and realize the rapid cooling of the spring pieces, an oil guide groove 251 is provided on the gasket 25.

[0037] In order to enhance the structural stability of the elastic component, a fixing hole for sleeved on the pin 24 is provided on the gasket 25. A fixing hole is also provided on the spring piece for installing the pin 24. The first auxiliary spring piece 22, the main spring piece 21, the second auxiliary spring piece 23 and the gasket are formed into an assembly by using the pin 24 to enhance the structural stability.

[0038] When the coupling transmits torque, the two ends of the main spring sheet are bent and deformed relative to each other. The auxiliary spring sheets are installed on both sides of the main spring sheet to strengthen the bending and deformation strength of the main sheet and avoid breakage due to excessive force. For this purpose, multiple first auxiliary spring sheets 22 and second auxiliary spring sheets 23 are provided. Figure 7 In each set of elastic components, there are two first auxiliary elastic sheets 22 , five second auxiliary elastic sheets 23 , and three main elastic sheets 21 .

[0039] To facilitate disassembly and maintenance, the housing assembly includes a cylindrical housing 51 placed outside the gear ring 1 and with openings at both ends, side plates 52 and a connecting plate 53 placed at both ends of the cylindrical housing 51 and the gear ring 1; the gear plate 4 is fixed on the connecting plate 53; the limit block 3 is connected to the side plate 52 and the connecting plate 53 at the same time by fixing bolts 54.

[0040] In order to improve the sealing performance, sealing rings are arranged on the connecting end surfaces of the side plate 52, the connecting plate 53, the gear ring 1 and the cylindrical shell 51 to achieve sealing.

[0041] The oil injection structure is used to inject oil into the cavity. For ease of operation, the oil injection structure includes an oil injection hole provided on the side plate 52 and an oil injection bolt 13 for closing the oil injection hole. There are at least two oil injection structures. For example, Figure 3 As shown, four oil injection structures are provided and are evenly distributed around the side plate 52 .

[0042] For the convenience of hoisting, the gear plate 4 is detachably connected with a lifting ring 6. Since the lifting ring 6 needs to be disassembled after the hoisting is completed, for the convenience of disassembly and assembly, one end of the lifting ring 6 can be detachably connected to the gear plate 4 through a screw structure.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Elastic coupling, characterized in that: include: A gear ring (1), wherein the inner diameter of the gear ring (1) is provided with a circle of internal teeth (11) and the outer diameter of the gear ring (1) is provided with at least two tooth grooves (12); A housing component, the housing component being connected to the gear ring (1) to form a circle of cavity between the housing component and the gear ring (1), and an oil injection structure being provided on the housing component; A limit block (3), the limit block (3) being fixed on the housing component and disposed between two adjacent tooth grooves (12); An elastic component, the elastic component is disposed between two adjacent limit blocks (3), the elastic component comprises at least three stacked elastic sheets and a pin (24) for connecting the elastic sheets, the elastic sheets comprising at least one main elastic sheet (21), at least one first auxiliary elastic sheet (22) and at least one second auxiliary elastic sheet (23) which are sequentially disposed, one end of the main elastic sheet (21) is disposed in the tooth groove (12), and the first auxiliary elastic sheet (22) and the second auxiliary elastic sheet (23) are asymmetrically disposed on both sides of the main elastic sheet (21); A gear plate (4), wherein the gear plate (4) is fixed outside the housing component and is coaxially arranged with the gear ring (1).

2. The elastic coupling according to claim 1, characterized in that: A gasket (25) is arranged between two adjacent spring sheets.

3. The elastic coupling according to claim 2, characterized in that: The gasket (25) is provided with an oil guide groove (251).

4. The elastic coupling according to claim 2, characterized in that: The gasket (25) is provided with a fixing hole for being sleeved on the pin (24).

5. The elastic coupling according to claim 1, characterized in that: There are two first pair of spring sheets (22) and five second pair of spring sheets (23).

6. The elastic coupling according to claim 1, characterized in that: The housing assembly comprises a cylindrical housing (51) disposed outside the gear ring (1) and having openings at both ends, side plates (52) and a connecting plate (53) disposed at both ends of the cylindrical housing (51) and the gear ring (1); the gear plate (4) is fixed on the connecting plate (53); and the limit block (3) is connected to the side plate (52) and the connecting plate (53) at the same time via fixing bolts (54).

7. The elastic coupling according to claim 6, characterized in that: The oil injection structure comprises an oil injection hole arranged on the side plate (52) and an oil injection bolt (13) used for closing the oil injection hole.

8. The elastic coupling according to claim 1, characterized in that: The gear plate (4) is detachably connected with a lifting ring (6).

9. The elastic coupling according to claim 1, characterized in that: There are at least two oil injection structures.

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