Flexible coupling

Abstract

The utility model relates to the technical field of couplings, in particular to a flexible coupling which comprises a main shaft sleeve and an auxiliary shaft sleeve, and a sheet layer is arranged between the main shaft sleeve and the auxiliary shaft sleeve. The flaky layer comprises a plurality of diaphragms, the diaphragms are uniformly arranged, the diaphragm surfaces of the diaphragms face the shaft end face of the main shaft sleeve, the adjacent diaphragms are fixedly connected through connecting columns, and the connecting positions of the diaphragms and the adjacent different diaphragms do not correspond to each other; a rubber layer is arranged between every two adjacent diaphragms, and each rubber layer is of an elastic structure. According to the utility model, the technical problem that the flexible coupling is protected while large offset compensation is carried out is solved.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and more specifically, to a flexible coupling. Background Technology

[0002] A flexible coupling is a mechanical transmission device used to connect drive shafts and bearings to achieve power transmission between machines or equipment. It effectively protects related mechanical components by using elastic elements to buffer vibrations and impacts generated during transmission. Flexible couplings generally use flexible compensating elements made of materials such as metal springs and rubber. These materials have a certain degree of flexibility and elasticity, allowing them to deform and return to their original shape within a certain range.

[0003] Existing flexible couplings have certain limitations in compensating for relative displacement between two shafts. In particular, when faced with large angular and axial displacements, the compensation effect is poor, which can easily lead to increased vibration in the transmission system, affecting the stable operation and service life of the equipment. Moreover, large offsets can also easily cause damage to the coupling itself.

[0004] A Chinese utility model patent, titled "A Novel Diaphragm Coupling" and with publication number CN220248718U, discloses a novel diaphragm assembly. This assembly comprises multiple diaphragms spaced apart, with rubber blocks positioned between adjacent diaphragms. Springs are mounted on the outside of these rubber blocks, their ends fixedly connected to the surfaces of the adjacent diaphragms. The rubber blocks and springs of this utility model provide vibration damping and cushioning, and also prevent excessive deformation of the diaphragms during operation.

[0005] Although this invention can ensure that the coupling can perform offset compensation and protect the diaphragm, since the diaphragm is a whole plate, its offset compensation is small and it cannot perform offsets of larger angles or amplitudes. In actual use, when facing large equipment with excessive torque and more severe vibration, it is difficult to ensure normal coupling function for a long time, and the offset compensation is easily insufficient, leading to damage to the coupling. Utility Model Content

[0006] The purpose of this application is to provide a flexible coupling that solves the technical problem of protecting the coupling while performing large offset compensation.

[0007] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0008] A flexible coupling includes a main bushing and a secondary bushing.

[0009] Preferably, a sheet-like layer is provided between the main bushing and the secondary bushing.

[0010] Preferably, the sheet layer comprises a plurality of film sheets, the film sheets are uniformly arranged, the film surfaces of the film sheets face the shaft end surfaces of the main shaft sleeve, the adjacent film sheets are fixedly connected through connecting columns, and the connecting positions between the film sheets and the adjacent different film sheets do not correspond.

[0011] Preferably, a rubber layer is arranged between the adjacent film sheets, and the rubber layer is an elastic structure.

[0012] Preferably, the outermost edges of the rubber layer are fixed on an elastic cladding layer, and the two ends of the elastic cladding layer are fixed on the outside of the main shaft sleeve and the secondary shaft sleeve respectively.

[0013] Preferably, the elastic cladding layer is an elastic structure.

[0014] Preferably, one end of the film sheet close to the main shaft sleeve and the secondary shaft sleeve in the plurality of film sheets is fixedly connected with the main shaft sleeve and the secondary shaft sleeve through a fixing column respectively.

[0015] Preferably, the film sheet is an arc-shaped structure, the arc-shaped first end of the film sheet is fixedly connected with the adjacent film sheet on one side of the film sheet through a connecting column, and the arc-shaped second end of the film sheet is fixedly connected with the adjacent film sheet on the other side of the film sheet through a connecting column.

[0016] Preferably, the rubber layer comprises a rubber block one and a rubber block two, the rubber block one is arranged in abutment between the film sheet and the shaft end surface of the main shaft sleeve or the secondary shaft sleeve, and the rubber block two is arranged in abutment between the film sheet and the film sheet.

[0017] Preferably, the elastic cladding layer comprises a cladding rubber, the cladding rubber is fixed on the outside of the main shaft sleeve and the secondary shaft sleeve, the inner surface of the cladding rubber is in abutment with the outer edge of the film sheet, and the inner surface of the cladding rubber is fixedly connected with the outer edges of the rubber block one and the rubber block two.

[0018] The technical scheme has at least the following advantages and beneficial effects:

[0019] In the utility model, the sheet layer is formed by arranging a plurality of arc-shaped film sheets, and the two end shaft sleeves are connected, the large deformation of the arc-shaped film sheets is utilized to improve the offset compensation of the shaft coupling.

[0020] In the utility model, the elastic blocks are arranged between the adjacent film sheets, the elastic force of the elastic blocks is utilized to apply resistance to the film sheets when the deformation of the film sheets is too large, and the film sheets are prevented from being excessively deformed and broken.

[0021] In the utility model, the film sheets and the elastic blocks jointly work, the torque transmission of the shaft coupling is increased, and the shaft coupling is more suitable for larger and more vibration amplitude equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a sectional view of the utility model.

[0023] Figure 2 It is the structural schematic diagram of the utility model.

[0024] Figure 3 It is the sectional structure schematic diagram of the sheet layer in the utility model.

[0025] Figure 4 It is the sectional structure schematic diagram of another angle of the sheet layer in the utility model.

[0026] Figure 5 It is the structural schematic diagram of the utility model without rubber layer and elastic covering layer.

[0027] In the drawing: 1-main shaft sleeve, 11-slotted, 12-lock hole, 2-vice shaft sleeve, 3-sheet layer, 301-fixed column, 302-diaphragm, 303-connecting column, 4-rubber layer, 401-rubber block one, 402-rubber block two, 5-elastic covering layer, 501-covering rubber, 502-screw. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. If the terms "center", "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product in use, they are only for the convenience of describing the application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the application. It should be noted that, unless otherwise explicitly specified and limited, if the terms "set", "install", "connect" appear, they should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] EMBODIMENT

[0031] Please refer to Figures 1-5 The utility model provides a flexible coupling, including main shaft sleeve 1, auxiliary shaft sleeve 2, sheet layer 3, rubber layer 4, elastic cladding 5.

[0032] Further, the main shaft sleeve 1 is used for fixing the driving shaft of the external device, the auxiliary shaft sleeve 2 is used for fixing the driven shaft of the external device, the sheet layer 3 is arranged between the main shaft sleeve 1 and the auxiliary shaft sleeve 2, the sheet layer 3 connects the main shaft sleeve 1 and the auxiliary shaft sleeve 2, so that the coupling realizes the coupling function.

[0033] Please refer to Figures 3-5 In the embodiment, the sheet layer 3 includes fixed column 301, diaphragm 302, connecting column 303.

[0034] Specifically, a plurality of diaphragms 302 are arranged at the connecting position of the main shaft sleeve 1 and the auxiliary shaft sleeve 2, the plurality of diaphragms 302 are uniformly arranged and fixedly connected together through the connecting column 303, and the diaphragm 302 closest to the main shaft sleeve 1 and the auxiliary shaft sleeve 2 in the plurality of diaphragms 302 is fixedly connected with the main shaft sleeve 1 and the auxiliary shaft sleeve 2 through the fixed column 301 respectively, responsible for fixing the two shaft sleeves together, and the diaphragm surface of the diaphragm 302 faces the shaft end surface of the main shaft sleeve 1.

[0035] Among them, the diaphragm 302 is arc-shaped structure, the arc-shaped first end of the diaphragm 302 is fixedly connected with the adjacent diaphragm 302 on its one side through the connecting column 303, and the arc-shaped second end of the diaphragm 302 is fixedly connected with the adjacent diaphragm 302 on its other side through the connecting column 303.

[0036] Among them, because the diaphragm 302 is arc-shaped structure, therefore two sheet layers 3 structures are symmetrically arranged at the connecting position of the two shaft sleeves, to ensure the coupling stability of the coupling.

[0037] Preferably, because the connecting positions of adjacent diaphragms 302 are different, when the coupling performs the coupling function, the diaphragm 302 will be subjected to different direction forces exerted by the connecting column 303 or the fixed column 301 at both ends when the driving shaft causes the angle deviation between the two shaft sleeves, so that the diaphragm 302 is bent and twisted and deformed, and the elastic force generated by the deformation is used to offset the deviation amount, when the driving shaft causes the axial and radial deviation between the two shaft sleeves, the diaphragm 302 will be bent and deformed under the action of the connecting column 303 or the fixed column 301 at both ends, and the elastic force generated by the deformation is used to offset the deviation amount.

[0038] Among them, when different forces are exerted on both ends of the arc-shaped diaphragm 302, because it is a long arc-shaped structure, when deformation such as bending and twisting is performed, the deformation amplitude will be larger, and greater deviation compensation can be performed, facilitating the application of large equipment with greater vibration amplitude.

[0039] At this time, the main shaft sleeve 1, the sheet layer 3 and the auxiliary shaft sleeve 2 jointly constitute a diaphragm 302 coupling structure, and have the function of the diaphragm 302 coupling.

[0040] Further, gaps exist between adjacent diaphragms 302, and a rubber layer 4 is arranged in the gaps. The rubber layer 4 is of an elastic structure and can be deformed.

[0041] The sheet layer 3 can ensure the offset compensation function during the operation of the coupling, but if a large torque is applied, the diaphragm 302 may be broken due to excessive deformation during deformation compensation, resulting in damage to the coupling.

[0042] Preferably, the gaps between adjacent diaphragms 302 are provided with the rubber layer 4 which can be elastically deformed. During offset compensation, the diaphragm 302 and the rubber can be elastically deformed, which does not affect the compensation function of the sheet layer 3. Moreover, when excessive torque is applied, the offset force is too large, and the excessive deformation of the diaphragm 302 during compensation is blocked by the rubber layer 4 which cannot be elastically deformed, thereby protecting the diaphragm 302 from being broken due to excessive deformation and ensuring the coupling safety of the coupling.

[0043] Please refer to Figure 3 and Figure 4 In this embodiment, the rubber layer 4 includes a rubber block one 401 and a rubber block two 402.

[0044] Specifically, the rubber block one 401 is arranged between the surface of the diaphragm 302 and the shaft end face of the main shaft sleeve 1 or the auxiliary shaft sleeve 2, and the rubber block two 402 is arranged between the diaphragm 302 and the diaphragm 302. Both rubber blocks can be elastically deformed and can jointly act with the diaphragm 302 to ensure the offset compensation of the coupling and to withstand a larger torque to ensure the safety of the coupling during coupling.

[0045] Further, the outermost edge of the rubber layer 4 is fixed on the elastic covering layer 5, and the two ends of the elastic covering layer 5 are respectively fixed on the outside of the main shaft sleeve 1 and the auxiliary shaft sleeve 2. The elastic covering layer 5 is of an elastic structure and can ensure the accurate positioning of the rubber layer 4 after offset compensation without displacement, and can also be quickly replaced by using the elastic covering layer 5.

[0046] Please refer to Figure 3 and Figure 4 In this embodiment, the elastic covering layer 5 includes a covering rubber 501 and a screw 502.

[0047] Specifically, the rubber coating 501 is coated on the outside of the main shaft sleeve 1 and the secondary shaft sleeve 2, and the entire sheet layer 3 and the rubber layer 4 are coated and protected from external collision damage. The rubber coating 501 is provided with screws 502 at the axial ends of the shaft sleeves, the screws 502 pass through the rubber coating, and screw holes are provided on the outer walls of the main shaft sleeve 1 and the secondary shaft sleeve 2, which match the screws 502 to lock and fix the rubber coating 501 on the two shaft sleeves.

[0048] The inner surface of the rubber coating 501 is attached to the outer edge of the diaphragm 302, and the inner surface of the rubber coating 501 is fixedly connected to the outer edge of the rubber block one 401 and the rubber block two 402. When the shaft coupling deviates and deforms, the rubber coating 501 will also deform, so that the fixed rubber block also follows the displacement, thereby maintaining the same deviation position with the diaphragm 302, and ensuring the elastic protection effect on the diaphragm 302. In addition, because the diaphragm 302 will always exert different forces on the rubber block during shaft coupling, the rubber block wears frequently. At this time, the screws 502 can be loosened, the rubber coating 501 can be removed, and the fixed rubber block on the rubber coating 501 can be removed for portable replacement, thereby improving the service life of the shaft coupling.

[0049] In addition, please refer to Figure 2 and Figure 5 In the embodiment, the shaft holes of the main shaft sleeve 1 and the secondary shaft sleeve 2 are provided with grooves 11, the grooves 11 pass through the shaft sleeves in the axial direction, the openings of the grooves 11 pass through one side of the shaft sleeves, the shaft sleeves are provided with lock holes 12 at the openings of the grooves 11, the lock holes 12 pass through both sides of the openings, and the lock holes 12 are provided with bolt members. When the shaft sleeve is used to fix the shaft assembly, the bolt members are tightened to apply clamping force to the shaft sleeves on both sides of the groove 11 opening, so that the opening of the groove 11 on the shaft sleeve is gradually closed, thereby reducing the hole diameter of the shaft hole in the shaft sleeve, and the shaft assembly is fixed.

[0050] Thus, the embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can understand how to implement the technical solutions of the present application according to the above description, and the scope of the present application is defined by the appended claims.

Claims

1. A flexible coupling, comprising a main bushing (1) and a secondary bushing (2), characterized in that; A sheet-like layer (3) is provided between the main bushing (1) and the secondary bushing (2); The sheet-like layer (3) includes a plurality of membranes (302), which are evenly arranged. The membrane surface of the membranes (302) faces the shaft end face of the main bushing (1). Adjacent membranes (302) are fixedly connected by connecting posts (303). The connection positions between the membranes (302) and adjacent different membranes (302) do not correspond. A rubber layer (4) is provided between the adjacent diaphragms (302), and the rubber layer (4) is an elastic structure.

2. A flexible coupling according to claim 1, characterized in that, The outermost edge of the rubber layer (4) is fixed on the elastic covering layer (5), and the two ends of the elastic covering layer (5) are respectively fixed to the outside of the main bushing (1) and the secondary bushing (2); The elastic coating layer (5) is an elastic structure.

3. A flexible coupling according to claim 1, characterized in that, One end of the diaphragm (302) closest to the main bushing (1) and the secondary bushing (2) is fixedly connected to the main bushing (1) and the secondary bushing (2) respectively by a fixing post (301).

4. A flexible coupling according to claim 3, characterized in that, The diaphragm (302) has an arc-shaped structure. The first arc-shaped end of the diaphragm (302) is fixedly connected to the adjacent diaphragm (302) on one side through a connecting post (303). The second arc-shaped end of the diaphragm (302) is fixedly connected to the adjacent diaphragm (302) on the other side through a connecting post (303).

5. A flexible coupling according to claim 1, characterized in that, The rubber layer (4) includes a first rubber block (401) and a second rubber block (402). The first rubber block (401) is attached between the diaphragm (302) and the shaft end face of the main bushing (1) or the secondary bushing (2), and the second rubber block (402) is attached between the diaphragms (302).

6. A flexible coupling according to claim 1, characterized in that, The elastic covering layer (5) includes a covering rubber (501), which is fixed to the outside of the main bushing (1) and the secondary bushing (2). The inner surface of the covering rubber (501) is attached to the outer edge of the diaphragm (302), and the inner surface of the covering rubber (501) is fixedly connected to the outer edges of the first rubber block (401) and the second rubber block (402).

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