Self-lubricating multidirectional compensation coupling device

Abstract

The invention relates to a self-lubricating multidirectional compensation coupling device, which relates to the field of coupling technical equipment, and comprises a first half coupling, a second half coupling is arranged on one side of the first half coupling, and the end part of the second half coupling extends into the first half coupling. A flexible gear sleeve is arranged between the first half coupling and the second half coupling, the outer side wall of the flexible gear sleeve is connected with the first half coupling, and the inner side of the flexible gear sleeve is connected with the second half coupling. The coupling has the advantages that the problems that an existing coupling is high in centering requirement, complex in field installation, incapable of absorbing different coaxiality and large-degree angle inclination in a mechanism and poor in buffering performance are solved.

Description

Technical Field

[0001] The present application relates to the field of coupling technology equipment, and in particular to a self-lubricating multi-directional compensation coupling device. Background Art

[0002] A coupling is a device used to connect the driving shaft and the driven shaft to achieve power and motion transmission. It is widely used in engineering. From the functional point of view, couplings can be divided into two categories: rigid couplings and flexible couplings. Rigid couplings achieve torque transmission through a rigid connection between the two shafts. They have a simple structure and are easy to maintain. They can transmit large torques, but they do not have the ability to buffer and compensate for the relative displacement of the two axes. Flexible couplings are divided into flexible couplings without elastic elements and flexible couplings with elastic elements according to their composition. The former only has the function of compensating for the relative displacement of the two axes, while the latter also has the function of buffering and vibration reduction due to the presence of elastic elements.

[0003] With the widespread use of high-speed and high-load power sources in engineering, the vibration and noise problems of power systems have become increasingly prominent. As a key component for transmitting power and motion, couplings also play the role of reducing vibration and noise. Rigid couplings have no buffering effect and require high centering performance, so they cannot be used in harsh working conditions. When the load is large, the tooth surface of traditional gear couplings is severely worn, and due to the obvious frictional heat generation, forced lubrication and cooling are required. Diaphragm couplings and bellows couplings transmit less torque and are prone to breakage when overloaded. Although the slider coupling has a good error adjustment effect, it is mostly suitable for conditions with lower speeds and requires lubrication. Plum blossom couplings are very prone to breakage or chipping under high-speed and heavy-load conditions.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the current couplings have poor adaptability to working conditions and cannot meet the actual working conditions. It is difficult to achieve reliable torque transmission under harsh working conditions and to suppress vibration. Summary of the invention

[0005] In order to solve the problems that existing couplings have high requirements for neutrality, complex on-site installation, cannot absorb different axial degrees and large degrees of angular tilt in the mechanism, and have poor buffering performance, the present application provides a self-lubricating multi-directional compensation coupling device.

[0006] The present application provides a self-lubricating multi-directional compensation coupling device, which adopts the following technical solution:

[0007] A self-lubricating multi-directional compensation coupling device includes a first half coupling, a second half coupling is arranged on one side of the first half coupling, an end of the second half coupling extends into the first half coupling, a flexible tooth sleeve is arranged between the first half coupling and the second half coupling, the outer side wall of the flexible tooth sleeve is connected to the first half coupling, and the inner side of the flexible tooth sleeve is connected to the second half coupling.

[0008] Optionally, the first half coupling is fixedly connected with an internal spline relative to the inner side wall of the flexible toothed sleeve, and the flexible toothed sleeve is fixedly connected with an external toothed sleeve spline relative to the outer side wall of the internal spline, and the internal spline is meshingly connected with the external toothed sleeve spline.

[0009] Optionally, the second half coupling is fixedly connected with an external spline relative to the outer side wall of the flexible toothed sleeve, and the flexible toothed sleeve is fixedly connected with an internal toothed sleeve spline relative to the inner side wall of the external spline, and the external spline is meshingly connected with the internal toothed sleeve spline.

[0010] Optionally, the length of the flexible tooth sleeve along the axial direction is greater than the length of the connection between the second half coupling and the flexible tooth sleeve.

[0011] Optionally, the second half coupling includes a toothed portion, a side of the toothed portion facing away from the first half coupling is fixedly connected to a shaft body portion, the toothed portion extends into the first half coupling and is connected to the flexible tooth sleeve, and the outer teeth of the toothed portion are drum-shaped teeth.

[0012] Optionally, the tooth top and tooth surface of the tooth-shaped portion are both arc-shaped structures.

[0013] Optionally, an end of the toothed portion facing away from the shaft portion is spaced apart from an inner end surface of the first half coupling, and an end of the toothed portion close to the shaft portion is spaced apart from an outer end surface of the first half coupling.

[0014] Optionally, a sealing ring is fixedly connected to the flexible tooth sleeve at a position opposite to the shaft body portion, and a side wall of the sealing ring abuts against a side wall of the shaft body portion.

[0015] Optionally, a retaining ring is fixedly connected to the side wall of the first half-coupling located on the side wall of the flexible gear sleeve, and the retaining ring is located on a side of the flexible gear ring close to the outer side of the second half-coupling.

[0016] Optionally, the flexible tooth sleeve is made of polytetrafluoroethylene.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. This application designs a flexible tooth sleeve between the left and right half couplings, and selects polytetrafluoroethylene material to achieve flexible meshing of the inner and outer teeth of the two shafts and reduce tooth surface wear. At the same time, since polytetrafluoroethylene has a certain lubricating effect, there is no need to lubricate the coupling additionally, which facilitates use and maintenance.

[0019] 2. For the radial deviation, axial deviation and angular deviation between the two shafts, this scheme compensates for the deviation from the following aspects: on the one hand, the elastic deformation of the flexible gear sleeve is used to compensate for the radial deviation between the two shafts, thereby reducing the centering requirements; on the other hand, by reasonably designing the width margin of the flexible gear sleeve, when the axial deviation between the two shafts is large, the flexible gear sleeve and the external teeth of the right half coupling can still be reliably engaged; finally, by modifying the external teeth of the second half coupling into a drum-shaped tooth structure, the angular displacement compensation amount is increased, the friction and wear conditions of the tooth surface are improved, and the effect of buffering and vibration reduction is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a self-lubricating multi-directional compensation coupling device in an embodiment of the present application.

[0021] Explanation of the reference numerals: 1. first half coupling; 11. opening; 12. retaining ring; 2. second half coupling; 21. toothed portion; 22. shaft body portion; 3. flexible tooth sleeve; 31. sealing ring. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0024] The following is combined with Figure 1 This application is described in further detail.

[0025] The present application embodiment discloses a self-lubricating multi-directional compensation coupling device. Figure 1 A self-lubricating multi-directional compensation coupling device includes a first half coupling 1 and a second half coupling 2. An opening 11 is formed at one end of the first half coupling 1 close to the second half coupling 2, and an end of the second half coupling 2 extends into the interior of the opening 11 of the first half coupling 1.

[0026] The second half coupling 2 includes a toothed portion 21 located inside the first half coupling 1 and a shaft portion 22 located outside the first half coupling 1. The toothed portion 21 is fixedly connected to the shaft portion 22 and is relatively coaxially arranged. The toothed portion 21 extends into the first half coupling 1 through the opening 11, and a gap is left between the outer surface side wall of the toothed portion 21 and the inner side wall of the opening 11 of the first half coupling 1. The outer teeth of the toothed portion 21 are modified to form drum-shaped teeth, the tooth thickness gradually decreases from the center to both sides, and the tooth top and tooth surface are both arc-shaped.

[0027] A flexible tooth sleeve 3 is coaxially arranged inside the opening 11 of the first half coupling 1. The flexible tooth sleeve 3 is sleeved on the outside of the toothed portion 21 of the second half coupling 2. In some embodiments, the flexible tooth sleeve 3 is made of polytetrafluoroethylene, which can play a role of flexible connection and has a certain lubrication effect. A sealing ring 31 is fixedly connected to the side of the flexible tooth sleeve 3 close to the shaft body 22. The sealing ring 31 is an annular structure, and the sealing ring 31 is coaxially arranged with the flexible tooth sleeve 3. The inner wall of the sealing ring 31 abuts against the outer wall of the shaft body 22. The sealing ring 31 can play a certain sealing role to prevent dust and impurities from entering the gear meshing.

[0028] An inner spline is fixedly connected to the inner side wall of the first half coupling 1 relative to the opening 11, and an outer spline is fixedly connected to the outer side wall of the flexible sleeve 3 at a position relative to the inner spline, and the outer spline is meshed with the inner spline.

[0029] The outer side wall of the toothed portion 21 of the second half coupling 2 is fixedly connected with an external spline, and the inner side wall of the flexible toothed sleeve 3 is fixedly connected with an internal sleeve spline at a position relative to the external spline, and the internal sleeve spline is relatively meshed with the external spline.

[0030] The rotation of the first half coupling 1 drives the flexible gear sleeve 3 to rotate, and the flexible gear sleeve 3 drives the second half coupling 2 to rotate. When the driving shaft rotates, the meshing between the flexible gear sleeve 3 and the left and right half couplings is non-rigid meshing, which effectively prevents the wear of the tooth surfaces of the left and right half couplings and prolongs the life of the meshing teeth. Because polytetrafluoroethylene has its own lubrication effect, there is no need to lubricate the gear meshing. After working for a long time, the flexible gear sleeve 3 can be replaced, which is convenient for maintenance.

[0031] A retaining ring 12 is vertically arranged on one side of the flexible tooth sleeve 3 close to the shaft body 22. The retaining ring 12 is coaxially arranged with the flexible tooth sleeve 3 and is fixedly connected to the inner wall of the first half coupling 1. The side wall of the retaining ring 12 close to the flexible tooth sleeve 3 abuts against the flexible tooth sleeve 3. The position of the flexible tooth sleeve 3 is limited by the retaining ring 12, so that one end of the flexible tooth sleeve 3 abuts against the inner wall of the first half coupling 1, and the other end of the flexible tooth sleeve 3 abuts against the retaining ring 12.

[0032] The length of the flexible tooth sleeve 3 along the axial direction of the second half coupling 2 is greater than the length of the toothed portion 21 of the second half coupling 2 along the axial direction of the second half coupling 2. A gap is left between the end wall of the flexible tooth sleeve 3 away from the shaft body 22 and the end of the toothed portion 21 of the second half coupling 2 away from the shaft body 22, and a gap is left between the end wall of the flexible tooth sleeve 3 close to the shaft body 22 and the end of the toothed portion 21 of the second half coupling 2 close to the shaft body 22.

[0033] The toothed portion 21 of the second half coupling 2 can move along the axial direction of the second half coupling 2 at the position of the flexible tooth sleeve 3 to ensure that when the driven shaft has a certain axial movement, the meshing between the teeth remains in a normal state.

[0034] In this application, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A self-lubricating multi-directional compensation coupling device, characterized in that: The invention comprises a first half coupling (1), a second half coupling (2) is arranged on one side of the first half coupling (1), an end of the second half coupling (2) extends into the first half coupling (1), a flexible tooth sleeve (3) is arranged between the first half coupling (1) and the second half coupling (2), an outer side wall of the flexible tooth sleeve (3) is connected to the first half coupling (1), and an inner side of the flexible tooth sleeve (3) is connected to the second half coupling (2).

2. The self-lubricating multi-directional compensation coupling device according to claim 1 is characterized in that: The first half coupling (1) is fixedly connected with an internal spline relative to the inner side wall of the flexible toothed sleeve (3), and the flexible toothed sleeve (3) is fixedly connected with an external toothed sleeve spline relative to the outer side wall of the internal spline, and the internal spline is meshingly connected with the external toothed sleeve spline.

3. The self-lubricating multi-directional compensation coupling device according to claim 1 is characterized in that: The second half coupling (2) is fixedly connected with an external spline relative to the outer side wall of the flexible toothed sleeve (3), and the flexible toothed sleeve (3) is fixedly connected with an internal toothed sleeve spline relative to the inner side wall of the external spline, and the external spline is meshingly connected with the internal toothed sleeve spline.

4. The self-lubricating multi-directional compensation coupling device according to claim 1 is characterized in that: The length of the flexible tooth sleeve (3) along the axial direction is greater than the length of the connection between the second half coupling (2) and the flexible tooth sleeve (3).

5. The self-lubricating multi-directional compensation coupling device according to claim 4 is characterized in that: The second half coupling (2) comprises a toothed portion (21), a shaft portion (22) being fixedly connected to the side of the toothed portion (21) facing away from the first half coupling (1), the toothed portion (21) extending into the interior of the first half coupling (1) and connected to the flexible tooth sleeve (3), and the outer teeth of the toothed portion (21) are drum-shaped teeth.

6. The self-lubricating multi-directional compensation coupling device according to claim 5, characterized in that: The tooth top and tooth surface of the tooth-shaped portion (21) are both arc-shaped structures.

7. The self-lubricating multi-directional compensation coupling device according to claim 5, characterized in that: An end of the toothed portion (21) facing away from the shaft portion (22) is spaced from the inner end surface of the first half coupling (1), and an end of the toothed portion (21) close to the shaft portion (22) is spaced from the outer end surface of the first half coupling (1).

8. The self-lubricating multi-directional compensation coupling device according to claim 5, characterized in that: A sealing ring (31) is fixedly connected to the flexible tooth sleeve (3) at a position opposite to the shaft body (22), and a side wall of the sealing ring (31) abuts against a side wall of the shaft body (22).

9. The self-lubricating multi-directional compensation coupling device according to claim 1, characterized in that: A retaining ring (12) is fixedly connected to the side wall of the first half coupling (1) and the side wall of the flexible gear sleeve (3), and the retaining ring (12) is located on a side of the flexible gear ring close to the outside of the second half coupling (2).

10. The self-lubricating multi-directional compensation coupling device according to claim 1, characterized in that: The flexible tooth sleeve (3) is made of polytetrafluoroethylene.

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