Coupling for airplane wheel driver

Abstract

The utility model relates to the technical field of airplane wheel drivers, in particular to a coupler for an airplane wheel driver, which comprises a coupler body, a first coupling and a second coupling, the length of the coupler body is adjustable, the coupler body comprises an inner sleeve and an outer sleeve, and the inner sleeve and the outer sleeve are connected through a movable connecting mechanism; a third flange and a fourth flange are installed at the two ends of the coupling body respectively and fixedly connected with a first flange and a second flange on the first coupling and the second coupling respectively, elastic membranes are arranged between the first flange and the third flange and between the second flange and the fourth flange respectively, and rubber cushions are attached to the two sides of the elastic membranes respectively. The application range and application scene of the coupler are expanded, and meanwhile the service life of the diaphragm and the coupler is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft wheel drives, and in particular to a coupling for an aircraft wheel drive. Background Art

[0002] Diaphragm couplings utilize diaphragms bolted alternately to two coupling halves. Each set of diaphragms is composed of several stacked diaphragms. Diaphragm couplings compensate for relative displacement between the two connected shafts through the elastic deformation of the diaphragms. They require no lubricant, offer a compact structure, high strength, long service life, zero rotational backlash, and are unaffected by temperature and oil contamination, leading to their widespread application.

[0003] Chinese patent CN220320135U discloses a diaphragm coupling, which belongs to the field of bearing connection technology, and includes a coupling body, a first coupling and a second coupling, wherein the coupling body is fixedly connected with a first flange and a third flange on both sides, the first coupling is fixedly connected with a second flange on one side, and the second coupling is fixedly connected with a fourth flange on one side, and a first threaded hole is provided between the second flange and the first flange. The beneficial effect is that the diaphragm coupling can realize the connection between the first coupling and the coupling body by arranging a first bolt and a first nut, and can realize the connection between the coupling body and the second coupling by arranging a second bolt and a second nut, and can avoid wear between the diaphragm and the component by arranging a first rubber pad and a first elastic diaphragm and arranging a second rubber pad and a second elastic diaphragm at the same time, thereby increasing the advantages of long service life and good stability.

[0004] However, the current diaphragm coupling can only compensate for the offset of the two shafts through the elastic deformation of the diaphragm, but cannot compensate for the changes in the distance between the two shafts. Therefore, a new technical solution is urgently needed to solve the above problem. Utility Model Content

[0005] In order to overcome the problems existing in the prior art, the present application provides a coupling for a wheel drive.

[0006] The present application provides a coupling for a wheel drive adopting the following technical solution:

[0007] A coupling for a wheel drive comprises a coupling body, a first coupling, and a second coupling. The coupling body is adjustable in length and comprises an inner sleeve and an outer sleeve, wherein the inner sleeve and the outer sleeve are connected by a movable connection mechanism. A third flange and a fourth flange are respectively mounted at both ends of the coupling body and are fixedly connected to the first flange and the second flange on the first coupling and the second coupling, respectively. Elastic diaphragms are provided between the first flange and the third flange, and between the second flange and the fourth flange, and rubber pads are fitted on both sides of the elastic diaphragms.

[0008] By adopting the above technical solution, the driving shaft and the driven shaft are fixedly installed inside the first coupling and the second coupling, respectively, and the first coupling and the second coupling are connected to the third flange and the fourth flange at both ends of the coupling body through the first flange and the second flange, respectively. A diaphragm is provided at the connection between the two to compensate for the offset between the driving shaft and the driven shaft, and rubber pads are provided on both sides of the diaphragm to avoid wear between the diaphragm and the couplings and the coupling body on both sides, thereby increasing its service life. In addition, the coupling body includes an inner sleeve and an outer sleeve connected by a movable connection mechanism, so that the length of the coupling body is also adjustable, which can compensate for changes in the distance between the driving shaft and the driven shaft, greatly improving the scope of application and application scenarios of the coupling.

[0009] Preferably, the inner sleeve is provided with a third flange and an inner lap joint flange at both ends, and the outer sleeve is provided with a fourth flange and an outer lap joint flange at both ends, wherein the inner sleeve further comprises an extension portion extending from one end of the inner lap joint flange into the outer sleeve.

[0010] The movable connection mechanism includes a movable limiting part that passes through the outer wall of the inner sleeve extension and the outer sleeve, including strip-shaped through holes distributed along the length direction of the inner sleeve extension and corresponding limiting holes installed on the outer sleeve, and the strip-shaped through holes and the limiting holes are connected by bolts.

[0011] The outer wall of the inner sleeve is provided with a circumferential array of limiting sliding grooves distributed along the length direction thereof, and the inner wall of the outer sleeve is provided with limiting protrusions adapted thereto.

[0012] By adopting the above technical solution, the inner sleeve slides in the outer sleeve through the extension part to realize the adjustment of the length of the coupling body, and the movable connection mechanism for connecting the two includes a movable limiting part connecting the pipe walls of the two, which uses bolts to penetrate the strip through-holes on the inner sleeve and the limiting holes on the outer sleeve to realize the movable connection limit between the two, and a limiting groove is provided on the outer wall of the inner sleeve to be slidably connected with the limiting protrusion on the inner wall of the outer sleeve, thereby avoiding relative rotation between the inner sleeve and the outer sleeve to affect the telescopic adjustment of the coupling body.

[0013] Preferably, an elastic buffer assembly is connected between the inner slip-on flange and the outer slip-on flange, including a bolt connecting the inner slip-on flange and the outer slip-on flange, wherein a buffer spring is mounted on one end of the bolt, and the other end of the buffer spring abuts against the inner slip-on flange.

[0014] Guide rods are further connected between the inner lap joint flange and the outer lap joint flange, wherein the guide rods are arranged in a circumferential array on the inner lap joint flange and the outer lap joint flange.

[0015] The length of the guide rod between the inner and outer lap joint flanges is the same as the length of the extension.

[0016] By adopting the above technical solution, the movable connection mechanism also includes an elastic buffer component. By installing a buffer spring on the bolt connecting the inner sleeve flange and the outer sleeve flange, the buffer spring provides buffering and tension between the inner sleeve and the outer sleeve when relative movement occurs between the two, thereby ensuring that the coupling body provides stable transmission between the driving shaft and the driven shaft.

[0017] Preferably, staggered limit stops are provided between the first flange and the third flange, and between the second flange and the fourth flange, and the distance between the relatively distributed limit stops is less than the maximum deformation value of the elastic diaphragm.

[0018] By adopting the above technical solution, when the limit blocks staggeredly distributed between the first flange and the third flange, and the second flange and the fourth flange rotate relative to each other between the active shaft and the coupling body, and the coupling body and the driven shaft, the elastic deformation of the diaphragm itself can prevent the relative rotation between the two, and before the diaphragm reaches the maximum deformation value, the relatively distributed limit blocks can prevent the diaphragm from further deformation, and evenly distribute the relative rotation to the diaphragms of the two coupling bodies, thereby avoiding damage to the diaphragm on one side.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. This application provides a coupling body between the driving shaft and the driven shaft. The coupling body is connected to an inner sleeve and an outer sleeve by a movable connection mechanism, making the length of the coupling body adjustable. This can compensate for changes in the distance between the driving shaft and the driven shaft, greatly expanding the scope of application and application scenarios of the coupling.

[0021] 2. In this application, by installing limit blocks on the flanges on both sides of the diaphragm body itself, the diaphragm undergoes elastic deformation to prevent the relative rotation between the driving shaft and the driven shaft, and before the diaphragm reaches the maximum deformation value, the relatively distributed limit blocks can prevent the diaphragm from further deforming, and evenly distribute the deformation that prevents relative rotation to the diaphragms of both coupling bodies, avoiding damage to the diaphragm on one side and improving the service life of the diaphragm and the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the overall structure of a coupling for a wheel drive.

[0023] Explanation of the accompanying drawings: 1. Coupling body; 11. Inner sleeve; 111. Inner loose flange; 112. Extension portion; 113. Strip perforation; 114. Limiting slide groove; 12. Outer sleeve; 121. Outer loose flange; 122. Limiting hole; 123. Limiting protrusion; 13. Movable connecting mechanism; 131. Movable limiting portion; 132. Elastic buffer assembly; 1321. Buffer spring; 14. Third flange; 15. Fourth flange; 16. Guide rod; 2. First coupling; 21. First flange; 3. Second coupling; 31. Second flange; 4. Elastic diaphragm; 41. Rubber pad; 5. Limit block. DETAILED DESCRIPTION

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

[0025] The embodiment of the present application discloses a coupling for a wheel drive.

[0026] Reference Figure 1 A coupling for a wheel drive includes a coupling body 1, a first coupling 2, and a second coupling 3. The length of the coupling body 1 is adjustable, and includes an inner sleeve 11 and an outer sleeve 12, wherein the inner sleeve 11 and the outer sleeve 12 are connected by a movable connection mechanism 13; a third flange 14 and a fourth flange 15 are respectively installed at both ends of the coupling body 1, and are fixedly connected to the first flange 21 and the second flange 31 on the first coupling 2 and the second coupling 3, respectively; an elastic diaphragm 4 is provided between the first flange 21 and the third flange 14, and between the second flange 31 and the fourth flange 15, and rubber pads 41 are adhered to both sides of the elastic diaphragm 4. The driving shaft and the driven shaft are fixedly installed inside the first coupling 2 and the second coupling 3, respectively. The first coupling 2 and the second coupling 3 are connected to the third flange 14 and the fourth flange 15 at both ends of the coupling body 1 through the first flange 21 and the second flange 31, respectively. A diaphragm is provided at the connection between the two to compensate for the offset between the driving shaft and the driven shaft. Rubber pads 41 are provided on both sides of the diaphragm to avoid wear between the diaphragm and the couplings on both sides and the coupling body 1, thereby increasing its service life. The coupling body 1 is composed of an inner sleeve 11 and an outer sleeve 12 connected by a movable connection mechanism 13, so that the length of the coupling body 1 is also adjustable, which can compensate for changes in the distance between the driving shaft and the driven shaft, greatly improving the scope of application and application scenarios of the coupling.

[0027] Reference Figure 1The inner sleeve 11 is provided with a third flange 14 and an inner lap joint flange 111 at both ends, while the outer sleeve 12 is provided with a fourth flange 15 and an outer lap joint flange 121 at both ends. The inner sleeve 11 also includes an extension 112 extending from one end of the inner lap joint flange 111 into the outer sleeve 12. The movable connection mechanism 13 includes a movable stopper 131 that passes through the outer wall of the inner sleeve 11 extension 112 and the outer sleeve 12. The stopper 13 includes strip-shaped perforations 113 distributed along the length of the inner sleeve 11 extension 112 and corresponding stopper holes 122 installed in the outer sleeve 12. The strip-shaped perforations 113 and the stopper holes 122 are connected by bolts. The outer wall of the inner sleeve 11 is provided with a circumferential array of stopper grooves 114 distributed along its length, and the inner wall of the outer sleeve 12 is provided with stopper protrusions 123 that match the stopper grooves. The inner sleeve 11 slides in the outer sleeve 12 through the extension part 112 to achieve the adjustment of the length of the coupling body 1. The movable connection mechanism 13 for connecting the two includes a movable limiting part 131 connecting the pipe walls of the two. It uses bolts to penetrate the strip through-holes 113 on the inner sleeve 11 and the limiting holes 122 on the outer sleeve 12 to achieve the movable connection and limitation between the two. In addition, a limiting groove 114 is provided on the outer wall of the inner sleeve 11 to be slidably connected with the limiting protrusion 123 on the inner wall of the outer sleeve 12, thereby avoiding relative rotation between the inner sleeve 11 and the outer sleeve 12 to affect the telescopic adjustment of the coupling body 1.

[0028] Reference Figure 1 An elastic buffer assembly 132 is also connected between the inner and outer lap-joint flanges 111, 121. This assembly includes a bolt connecting the inner and outer lap-joint flanges 111, 121. One end of the bolt is fitted with a buffer spring 1321, the other end of which abuts the inner lap-joint flange 111. Guide rods 16 are also connected between the inner and outer lap-joint flanges 111, 121. The guide rods 16 are arranged in a circular array on the inner and outer lap-joint flanges 111, 121. The length of the guide rods 16 between the inner and outer lap-joint flanges 111, 121 is the same as the length of the extension portion 112. The movable connection mechanism 13 also includes an elastic buffer component 132. A buffer spring 1321 is installed on the bolt connecting the inner sleeve flange 111 and the outer sleeve flange 121. The buffer spring 1321 provides buffering and tension between the inner sleeve and the outer sleeve when relative movement occurs between the two, thereby ensuring that the coupling body 1 provides stable transmission between the driving shaft and the driven shaft.

[0029] Reference Figure 1Staggered limit stops 5 are also provided between the first flange 21 and the third flange 14, and between the second flange 31 and the fourth flange 15. The distance between the relatively distributed limit stops 5 is less than the maximum deformation value of the elastic diaphragm 4. When relative rotation occurs between the driving shaft and the coupling body 1, or between the coupling body 1 and the driven shaft, the limit stops 5 staggered between the first flange 21 and the third flange 14, and between the second flange 31 and the fourth flange 15, elastic deformation of the diaphragm itself prevents relative rotation therebetween. Furthermore, before the diaphragm reaches its maximum deformation value, the relatively distributed limit stops 5 prevent further deformation of the diaphragm, evenly distributing the relative rotation to the diaphragms on both sides of the coupling body 1, thus preventing damage to the diaphragm on one side.

[0030] Working Principle: The driving shaft and driven shaft are fixedly mounted inside the first and second couplings 2 and 3, respectively. These couplings are connected to the third and fourth flanges 14 and 15 at both ends of the coupling body 1 via first and second flanges 21 and 31, respectively. A diaphragm is provided at the junction, with rubber pads 41 positioned on either side of the diaphragm. The coupling body 1 comprises an inner sleeve 11 and an outer sleeve 12 connected by a movable connection mechanism 13, making the length of the coupling body 1 adjustable.

[0031] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A coupling for a wheel drive, comprising a coupling body (1), a first coupling (2) and a second coupling (3), characterized in that: The length of the coupling body (1) is adjustable, and the coupling body comprises an inner sleeve (11) and an outer sleeve (12), wherein the inner sleeve (11) and the outer sleeve (12) are connected via a movable connection mechanism (13); a third flange (14) and a fourth flange (15) are respectively installed at both ends of the coupling body (1), and are respectively fixedly connected to the first flange (21) and the second flange (31) on the first coupling (2) and the second coupling (3); an elastic diaphragm (4) is provided between the first flange (21) and the third flange (14), and between the second flange (31) and the fourth flange (15), and rubber pads (41) are attached to both sides of the elastic diaphragm (4).

2. A coupling for a wheel driver according to claim 1, characterized in that: The two ends of the inner sleeve (11) are respectively installed with a third flange (14) and an inner lap joint flange (111), and the two ends of the outer sleeve (12) are respectively installed with a fourth flange (15) and an outer lap joint flange (121), wherein the inner sleeve (11) further includes an extension portion (112) extending from one end of the inner lap joint flange (111) into the outer sleeve (12).

3. The wheel drive coupling according to claim 2, characterized in that: The movable connection mechanism (13) includes a movable limiting portion (131) that penetrates the outer wall of the inner sleeve (11) extension portion (112) and the outer sleeve (12), and includes strip-shaped through holes (113) distributed along the length direction of the inner sleeve (11) extension portion (112) and corresponding limiting holes (122) installed on the outer sleeve (12), and the strip-shaped through holes (113) and the limiting holes (122) are connected by bolts.

4. A coupling for a wheel driver according to claim 3, characterized in that: The outer wall of the inner sleeve (11) is provided with a circumferential array of limiting sliding grooves (114) distributed along its length direction, and the inner wall of the outer sleeve (12) is provided with a limiting protrusion (123) adapted thereto.

5. The coupling for a wheel driver according to claim 2, characterized in that: An elastic buffer assembly (132) is also connected between the inner lap joint flange (111) and the outer lap joint flange (121), comprising a bolt connecting the inner lap joint flange (111) and the outer lap joint flange (121), wherein a buffer spring (1321) is sleeved on one end of the bolt, and the other end of the buffer spring (1321) abuts against the inner lap joint flange (111).

6. The coupling for a wheel driver according to claim 5, characterized in that: A guide rod (16) is further connected between the inner lap joint flange (111) and the outer lap joint flange (121), wherein the guide rods (16) are arranged in a circumferential array on the inner lap joint flange (111) and the outer lap joint flange (121).

7. The wheel drive coupling according to claim 6, characterized in that: The length of the guide rod (16) between the inner lap joint flange (111) and the outer lap joint flange (121) is the same as the length of the extension portion (112).

8. The coupling for a wheel driver according to claim 1, characterized in that: Staggered position-limiting blocks (5) are also provided between the first flange (21) and the third flange (14), and between the second flange (31) and the fourth flange (15), and the distance between the relatively distributed position-limiting blocks (5) is less than the maximum deformation value of the elastic diaphragm (4).

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