Buffer type coupler

Abstract

The utility model relates to the technical field of couplings, in particular to a buffer type coupler which comprises a main shaft sleeve, the main shaft sleeve is coaxially connected with an auxiliary shaft sleeve through a connecting piece, and shaft holes of the main shaft sleeve and the auxiliary shaft sleeve are respectively in threaded connection with fixing sleeves. The connecting piece comprises a fixing piece and diaphragms, the diaphragms are fixedly connected to the two sides of the fixing piece respectively, and the diaphragms on the two sides are in relative sliding connection with the main shaft sleeve and the auxiliary shaft sleeve respectively. The main shaft sleeve and the auxiliary shaft sleeve are connected with the corresponding diaphragms through displacement adjusting assemblies respectively, the fixed ends of the displacement adjusting assemblies are located on the two shaft sleeves, the displacement ends of the displacement adjusting assemblies penetrate through the diaphragms in a sliding mode, and the sliding direction is consistent with the axial direction of the coupler. An elastic structure is arranged at the displacement end of the displacement adjusting assembly. According to the utility model, the technical problems that the coupler keeps a good buffering effect for a long time and different buffering degrees can be adjusted are solved.

Description

Technical Field

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

[0002] A coupling is a mechanical component used to connect two shafts (a driving shaft and a driven shaft) in different mechanisms, enabling them to rotate together and transmit torque. It can also connect a shaft to other components, such as gears and pulleys. In high-speed, heavy-load power transmission, couplings also provide cushioning, vibration reduction, and improved dynamic performance of the shaft system. In the event of an unexpected overload, the coupling is the first to fail, disconnecting the rotating parts and protecting the expensive power unit and the entire device.

[0003] Among the existing couplings, those with better buffering functions generally include elastic sleeve couplings, diaphragm couplings and spring couplings. Among them, the spring coupling is easy to undergo elastic deformation, so its buffering effect on radial vibration is weak, while the diaphragm coupling can buffer both axial and radial vibrations at the same time, but its bending deformation is small and the buffering effect is weak. In addition, the thinner diaphragm is also prone to bending and damage after long-term operation.

[0004] The Chinese utility model patent, entitled "A New Diaphragm Coupling," with publication number CN220248718U, has been published. The patent includes a new diaphragm assembly comprising multiple spaced diaphragms, with a rubber block positioned between adjacent diaphragms and a spring positioned outside the rubber block. The two ends of the spring are connected to the opposing surfaces of the two adjacent diaphragms. A half-coupling is connected to each side of the new diaphragm assembly. The new diaphragm assembly provided by this utility model features a central rubber block and spring that provide vibration damping and cushioning, while also providing support for the diaphragm, preventing it from excessively deforming during operation and potentially causing coupling failure. Furthermore, the rubber block and spring are inherently elastic and can deform together with the diaphragm to compensate for relative displacement between the two coupled shafts, thereby improving the performance of the diaphragm coupling.

[0005] Although the device can achieve a good buffering effect and prevent the coupling from being damaged by the combined action of the spring and the diaphragm, its shock absorption effect is fixed and poor when used on shaft structures with different torque sizes. Utility Model Content

[0006] The purpose of this application is to provide a buffer coupling, which solves the technical problems of maintaining a good buffering effect of the coupling for a long time and being able to adjust different buffering degrees.

[0007] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0008] A buffer type coupling comprises a main shaft sleeve, which is coaxially connected to a secondary shaft sleeve through a connecting piece, and a fixing sleeve is threadedly connected to the axial holes of the main shaft sleeve and the secondary shaft sleeve respectively.

[0009] Preferably, the connecting member includes a fixing member and a diaphragm, and the diaphragms are fixedly connected to both sides of the fixing member, and the diaphragms on both sides are respectively connected to the main shaft sleeve and the auxiliary shaft sleeve in a relatively sliding manner.

[0010] Preferably, the main shaft sleeve and the auxiliary shaft sleeve are respectively connected to the corresponding diaphragm through a displacement adjustment component, the fixed end of the displacement adjustment component is located on the two shaft sleeves, and the displacement end of the displacement adjustment component slides through the diaphragm, and the sliding direction is consistent with the axial direction of the coupling.

[0011] Preferably, the displacement end of the displacement adjustment component is provided with an elastic structure.

[0012] Preferably, the fixing member includes a connecting plate and a fixing column. The connecting plate is provided with an axial hole coaxial with the axial holes of the main shaft sleeve and the secondary shaft sleeve. The connecting plate is fixed with a fixing column, and both ends of the fixing column are respectively fixedly connected to the plate surface of a diaphragm.

[0013] Preferably, the fixing column is eccentrically arranged on the plate surface of the connecting plate and the diaphragm.

[0014] Preferably, the displacement adjustment assembly includes a sliding column, and the main shaft sleeve is fixedly connected to one end of the sliding column on a side facing the connecting member, and the sliding column slides through a diaphragm at the end of the main shaft sleeve.

[0015] Preferably, the secondary shaft sleeve is fixedly connected to one end of the sliding column on one side facing the connecting member, and the sliding column slides through the diaphragm at the end of the secondary shaft sleeve.

[0016] Preferably, the displacement adjustment assembly further includes a bolt, and threaded holes are coaxially passed through the main shaft sleeve and its corresponding sliding column, and the bolt is matched and connected with the threaded hole.

[0017] Preferably, the secondary shaft sleeve and its corresponding sliding column are also coaxially penetrated with threaded holes, and the bolts are matched and connected with the threaded holes.

[0018] Preferably, at least one gasket is sleeved between the nut end of the bolt and the corresponding sleeve.

[0019] Preferably, the elastic structure includes an elastic member 1, which is fixedly mounted on the threaded end of the bolt, is located between the diaphragm and the connecting member, and is in contact with the diaphragm.

[0020] Preferably, the elastic structure includes a second elastic member, wherein the second elastic member is connected between the main shaft sleeve and its corresponding diaphragm, and the second elastic member is connected between the secondary shaft sleeve and its corresponding diaphragm.

[0021] The technical solution of this application has at least the following advantages and beneficial effects:

[0022] In the present invention, by simultaneously providing the diaphragm and the elastic structure, the connection stability of the coupling is maintained, and a good buffering effect can be achieved through the bending deformation of the diaphragm and the elastic deformation of the elastic structure.

[0023] In the present invention, the shaft sleeve can be displaced relative to the diaphragm through the displacement adjustment component, thereby changing the distance between the diaphragm and the shaft sleeve, changing the elastic displacement of the elastic structure between the two, thereby applying different elastic resistances to the shaft sleeve and performing different degrees of elastic buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the present utility model.

[0025] Figure 2 It is a front view structural schematic diagram of the present utility model.

[0026] Figure 3 This is a structural diagram of the utility model from another angle.

[0027] Figure 4 It is a schematic cross-sectional structural diagram of the elastic mechanism in the present utility model.

[0028] Figure 5 It is a schematic cross-sectional structural diagram of the present utility model.

[0029] In the figure: 1-main shaft sleeve, 2-secondary shaft sleeve, 3-fixed sleeve, 4-connecting plate, 5-fixed column, 6-diaphragm, 7-elastic structure, 701-elastic part 1, 702-elastic part 2, 8-displacement adjustment assembly, 801-bolt, 802-gasket, 803-sliding column. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. Terms such as "center," "upper," "lower," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the figures, or the positions or locations in which the product is typically placed when in use. These terms are used solely for ease of description and simplification of the present application. They do not indicate or imply that the device or component referred to must have a specific position, be constructed, or operate in a specific orientation, and are not to be construed as limiting the present application. It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections or indirect connections through an intermediary; or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application in specific contexts.

[0032] Example

[0033] Please refer to Figure 1-Figure 5 The utility model provides a buffer coupling, including a main shaft sleeve 1, a secondary shaft sleeve 2, a fixed sleeve 3, a connecting plate 4, a fixed column 5, a diaphragm 6, an elastic structure 7, and a displacement adjustment component 8.

[0034] In the prior art, a coupling includes a main shaft sleeve 1, a secondary shaft sleeve 2, a fixed sleeve 3 and a connecting piece.

[0035] The main shaft sleeve 1 is coaxially fixedly connected to the secondary shaft sleeve 2 through a connecting piece. The two shaft sleeves are respectively connected to different equipment drive shaft structures for connecting the shaft structures and transmitting torque. The shaft holes of the main shaft sleeve 1 and the secondary shaft sleeve 2 are respectively threaded with a fixing sleeve 3. The fixing sleeve 3 is locked by the bolt 801 to fix the shaft structures on the two shaft sleeves.

[0036] In this embodiment, a buffering and shock-absorbing function is provided for the coupling by setting an elastic structure 7 between the main shaft sleeve 1 and the secondary shaft sleeve 2; and a displacement adjustment component 8 is set between the main shaft sleeve 1, the secondary shaft sleeve 2 and the corresponding connecting parts to adjust the elastic displacement range of the elastic structure 7, thereby realizing the adjustment of different buffering and shock-absorbing effects of the coupling.

[0037] Furthermore, the connecting piece is used to connect the two shaft sleeves, and the connecting piece includes a fixing piece and a diaphragm 6. The diaphragms 6 are fixedly connected to both sides of the fixing piece, and the diaphragms 6 on both sides are respectively connected to the main shaft sleeve 1 and the secondary shaft sleeve 2.

[0038] Preferably, a diaphragm 6 type coupling is formed by the diaphragm 6. When the diaphragm 6 type coupling is working, the vibration generated by the rotation of the shaft structure is transmitted to the coupling. Due to its own flexibility, the diaphragm 6 can absorb the vibration and compensate for the radial, angular and axial deviations of the two sleeves through the bending of the diaphragm 6.

[0039] Among them, the fixing part includes a connecting plate 4 and a fixing column 5. The connecting plate 4 has an axial hole passing through it, which is coaxial with the axial holes of the main shaft sleeve 1 and the secondary shaft sleeve 2. The connecting plate 4 is fixed with a fixing column 5, and the two ends of the fixing column 5 are respectively fixedly connected to the plate surface of a diaphragm 6; the fixing column 5 is eccentrically arranged on the plate surface of the connecting plate 4 and the diaphragm 6.

[0040] The connection area with the diaphragm 6 is reduced by fixing the column 5, so that the diaphragm 6 can be bent on the plate surface.

[0041] Furthermore, the main shaft sleeve 1 and the auxiliary shaft sleeve 2 are respectively connected to the corresponding diaphragm 6 via a displacement adjustment assembly 8. The fixed end of the displacement adjustment assembly 8 is located on the two shaft sleeves, and the displacement end of the displacement adjustment assembly 8 slides through the diaphragm 6. The sliding direction is consistent with the axial direction of the coupling. The displacement adjustment assembly 8 can adjust the relative distance between the two shaft sleeves and their corresponding diaphragms 6.

[0042] An elastic structure 7 is provided at the displacement end of the displacement adjustment component 8 .

[0043] Preferably, the elastic structure 7 is arranged on the two side surfaces of the diaphragm 6, and the elastic structure 7 is connected to the two shaft sleeves through the displacement adjustment component 8. When the coupling is working, the vibration of the shaft structure is transmitted to the two shaft sleeves, and the axial vibration will be offset by the elastic structure 7 between the shaft sleeve and the diaphragm 6, and the remaining radial vibration will be transmitted to the diaphragm 6 for weakening, thereby realizing vibration buffering and improving the stability and service life of the coupling.

[0044] Preferably, when different torques are applied to different shaft structures, the magnitude of vibration during coupling is also inconsistent, so different elastic forces are required for elastic shock absorption to avoid the elastic force of the elastic structure 7 being too large or too small, resulting in the inability to reduce the axial vibration of the shaft structure. Therefore, it is necessary to adjust the relative distance between the sleeve and the diaphragm 6 through the displacement adjustment structure, so that the elastic displacement of the elastic structure 7 during the period changes, thereby changing the magnitude of the buffering elastic force.

[0045] Please refer to Figure 3-Figure 5 In this embodiment, the displacement adjustment assembly 8 includes a bolt 801 , a gasket 802 , and a sliding column 803 .

[0046] Specifically, the side of the main shaft sleeve 1 facing the connecting member is fixedly connected to one end of a slide post 803. The slide post 803 slides through the diaphragm 6 at the end of the main shaft sleeve 1. The side of the secondary shaft sleeve 2 facing the connecting member is also fixedly connected to a similar slide post 803. The slide post 803 slides through the diaphragm 6 at the end of the secondary shaft sleeve 2. The two shaft sleeves can be displaced relative to the diaphragm 6 through the slide post 803, and the displacement direction is the axial direction of the shaft sleeve.

[0047] The main shaft sleeve 1 and its corresponding sliding column 803 are coaxially penetrated with threaded holes, and a matching bolt 801 is inserted into the threaded hole. When the bolt 801 is twisted, the bolt 801 moves in the threaded hole, and the moving direction is the axial direction of the sleeve.

[0048] The secondary shaft sleeve 2 and its corresponding sliding post 803 are also coaxially penetrated with threaded holes matching the bolts 801 .

[0049] In addition, at least one washer 802 is sleeved between the nut end of the bolt 801 and the shaft sleeve to increase the connection firmness of the bolt 801.

[0050] In this embodiment, the elastic structure 7 includes an elastic member 1 701 and an elastic member 2 702 .

[0051] Elastic member 1 701 is fixedly mounted on the threaded end of bolt 801 and is located between diaphragm 6 and connecting plate 4, abutting diaphragm 6. Elastic member 2 702 is fixedly connected at both ends between the main shaft sleeve 1 and its corresponding diaphragm 6, and elastic member 2 702 is connected between the secondary shaft sleeve 2 and its corresponding diaphragm 6.

[0052] When the sleeve is not rotated by the shaft structure, the second elastic member 702 exerts elastic force between the sleeve and the diaphragm 6, pushing the sleeve to slide away from the diaphragm 6, so that the first elastic member 701 abuts against the diaphragm 6, thereby maintaining the stability of the coupling.

[0053] When the sleeve is subjected to axial vibration of the shaft structure, the vibration force will drive the sleeve to slide closer to the diaphragm 6. At this time, the elastic part 1 701 moves toward the connecting plate 4 until it abuts. After abutting, the elastic part 1 701 offsets the axial vibration through its own elastic deformation and the elastic expansion and contraction of the elastic part 2 702 when the sleeve slides, thereby achieving buffering and shock absorption.

[0054] When the bolt 801 is twisted, the distance between the shaft sleeve and the diaphragm 6 can be changed by the displacement of the bolt 801 , thereby changing the elastic space of the second elastic member 702 , thereby adjusting the elastic buffering degree of the second elastic member 702 .

[0055] Among them, after the bolt 801 is displaced, a gasket 802 needs to be sleeved between the nut of the bolt 801 and the sleeve to support the bolt 801 while providing axial support force for the bolt 801 to avoid the thread loosening between the bolt 801 and the sleeve under long-term vibration of the shaft structure, resulting in the sleeve falling off, damage to the coupling, and causing a safety accident.

[0056] It is worth noting that, in this embodiment, the elastic member 1 701 is preferably provided with an elastic rubber pad, and the elastic member 2 702 is preferably provided with a spring.

[0057] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details known in the art have been omitted. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A buffer coupling, comprising a main shaft sleeve (1), the main shaft sleeve (1) being coaxially connected to a secondary shaft sleeve (2) through a connecting piece, and a fixing sleeve (3) being threadedly connected to the axial holes of the main shaft sleeve (1) and the secondary shaft sleeve (2), characterized in that ； The connecting member comprises a fixing member and a diaphragm (6), wherein the diaphragms (6) are fixedly connected to both sides of the fixing member, and the diaphragms (6) on both sides are respectively connected to the main shaft sleeve (1) and the auxiliary shaft sleeve (2) in a relatively sliding manner; The main shaft sleeve (1) and the auxiliary shaft sleeve (2) are respectively connected to the corresponding diaphragms (6) through a displacement adjustment component (8). The fixed ends of the displacement adjustment component (8) are located on the two shaft sleeves. The displacement end of the displacement adjustment component (8) slides through the diaphragm (6), and the sliding direction is consistent with the axial direction of the coupling. The displacement end of the displacement adjustment component (8) is provided with an elastic structure (7).

2. A buffer coupling according to claim 1, characterized in that: The fixing member comprises a connecting plate (4) and a fixing column (5); an axial hole is passed through the connecting plate (4) and is coaxial with the axial holes of the main shaft sleeve (1) and the auxiliary shaft sleeve (2); a fixing column (5) is fixedly passed through the connecting plate (4); and both ends of the fixing column (5) are respectively fixedly connected to the plate surface of a diaphragm (6); The fixing column (5) is eccentrically arranged on the plate surface of the connecting plate (4) and the diaphragm (6).

3. A buffer coupling according to claim 1, characterized in that: The displacement adjustment assembly (8) includes a sliding column (803), one end of the sliding column (803) is fixedly connected to a side of the main shaft sleeve (1) facing the connecting member, and the sliding column (803) slides through a diaphragm (6) at the end of the main shaft sleeve (1); The secondary shaft sleeve (2) is fixedly connected to one end of the sliding column (803) on one side of the connecting piece, and the sliding column (803) slides through the diaphragm (6) at the end of the secondary shaft sleeve (2).

4. A buffer coupling according to claim 1, characterized in that: The displacement adjustment assembly (8) further includes a bolt (801), and the main shaft sleeve (1) and its corresponding sliding column (803) are coaxially penetrated with a threaded hole, and the bolt (801) is matched and connected with the threaded hole; The secondary shaft sleeve (2) and its corresponding sliding column (803) are also coaxially penetrated with threaded holes, and the bolts (801) are matched and connected with the threaded holes; At least one gasket (802) is sleeved between the nut end of the bolt (801) and the corresponding shaft sleeve.

5. A buffer coupling according to claim 1, characterized in that: The elastic structure (7) includes an elastic member (701), which is fixedly mounted on the threaded end of the bolt (801), and the elastic member (701) is located between the diaphragm (6) and the connecting member, and the elastic member (701) is in contact with the diaphragm (6).

6. A buffer coupling according to claim 1, characterized in that: The elastic structure (7) includes a second elastic member (702), wherein the second elastic member (702) is connected between the main shaft sleeve (1) and its corresponding diaphragm (6), and the second elastic member (702) is connected between the secondary shaft sleeve (2) and its corresponding diaphragm (6).

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