CN-121986217-A - Support for spindle housing with sprung diaphragm

Abstract

The invention relates to a drive assembly (101, 301) for a wind power plant, comprising a main shaft, a housing (103), a support structure (105) that is fixed relative to a nacelle, and at least one spring element (107, 109), wherein the main shaft is completely supported in the housing (103), and wherein the housing (103) is mounted in a sprung manner in the support structure (105) by means of the at least one spring element (107, 109). The at least one spring element (107, 109) has at least one sprung diaphragm (403).

Inventors

• WARREN SMOOK

Assignees

• 采埃孚股份公司
• ZF风能安特卫普有限公司

Dates

Publication Date

20260505

Application Date

20240919

Priority Date

20231016

Claims (9)

1. 1. A drive assembly (101, 301) for a wind power plant, having a main shaft, a housing (103), a support structure (105) fixed relative to a nacelle and at least one spring element (107, 109), wherein, The spindle is supported entirely in the housing (103) and wherein, The housing (103) is mounted in the support structure (105) in a sprung manner by means of the at least one spring element (107, 109), characterized in that, The at least one spring element (107, 109) has at least one sprung diaphragm (403).
2. 2. The assembly (101, 301) according to claim 1, wherein, The at least one spring element (107, 301) has a first engagement point (401) and a second engagement point (405), wherein, The at least one spring element (107, 301) is engaged with the housing (103) in the first engagement site (401) and with the support structure (105) in the second engagement site (405), and wherein, A membrane (403) resiliently interconnects the first joint (401) and the second joint (405).
3. 3. The assembly (101, 301) according to the preceding claim, wherein the membrane (403), the first joint (401) and/or the second joint (405) are rotationally symmetrical.
4. 4. The assembly (101, 301) according to claim 2, wherein the first joint (401) and/or the second joint (405) extend not as far in the longitudinal direction as in the transverse direction.
5. 5. The assembly (101, 301) according to any one of the preceding claims, wherein the height axis of the spring element (107, 109) runs orthogonally to the rotation axis of the spindle.
6. 6. The assembly (101, 301) according to any one of the preceding claims, wherein the at least one spring element (107, 109) is composed of metal.
7. 7. The assembly (101, 301) according to any one of the preceding claims, wherein the at least one spring element (107, 109) is implemented in one piece.
8. 8. Assembly (101, 301) according to any of the preceding claims, wherein the weight of the housing (103) and/or the spindle is guided at least partly through the at least one spring element (107, 109) into a support structure (105) fixed relative to the nacelle.
9. 9. The assembly (101, 301) according to any one of the preceding claims, wherein the drive torque to which the housing (103) is loaded is at least partially introduced into a support structure (105) fixed relative to the nacelle by means of the at least one spring element (107, 109).

Description

Support for spindle housing with sprung diaphragm Technical Field The present invention relates to a drive assembly according to the preamble of claim 1. Background DE 10 2021 210 007 A1 discloses a drive assembly for a wind power plant, comprising a main shaft, a housing, a support structure fixed relative to the nacelle, and a plurality of spring elements. The spindle is supported entirely within the housing. The housing is mounted in a spring-loaded manner in the support structure by means of a spring element. The spring element is an elastomer. The elastomer is disadvantageous in that it ages and thus its spring effect decreases with time. Furthermore, the elastomer requires a large amount of installation space, but the installation space is insufficient in the bearing region of the spindle housing. Disclosure of Invention The object of the present invention is to provide a drive assembly for a wind power plant that is improved over the solutions known from the prior art. This object is achieved by a drive assembly according to claim 1. Preferred developments are contained in the dependent claims and emerge from the following description and the figures. The drive assembly according to the invention comprises a main shaft, a housing, a support structure fixed relative to the nacelle and at least one spring element. The main shaft is an input shaft of a transmission device of the wind generating set. In the installed state, it is connected in a rotationally fixed manner to a wind-driven rotor of the wind power plant. The main shaft is preferably also connected in a rotationally fixed manner to the input end (input shaft or input-side planetary carrier) of the transmission of the wind power plant. The housing described above is preferably engaged with the housing of the transmission. In particular, the two housings can be screwed or connected to one another in one piece. The support structure, which is fixed relative to the nacelle, is a support structure which is rigidly, i.e. fixed or fixably designed in the event of a relative movement being disabled, relative to the nacelle of the wind power plant. In particular, the frame may form a support structure. The spindle is supported entirely within the housing. This means that the main shaft is supported with each of its bearings in the housing. Thus, the spindle does not have any bearings with which the spindle is not supported in the housing. Each bearing of the spindle comprises two bearing rings. The first of the two bearing rings is fixed to the spindle or is formed in one piece by the spindle. Accordingly, the second bearing ring of the two bearing rings is fixed in the housing or formed in one piece by the housing. The housing is at least partially spring-mounted in the support structure by means of at least one spring element. This means that at least one bearing point, in which the housing is supported in the support structure, is embodied in a sprung manner. The bearing portion of the snap-action construction allows relative movement between the housing and the support structure. The bearing point has a spring element whose spring force is counteracted with these relative movements. In order to apply the spring force, according to the invention at least one sprung diaphragm is provided as part of at least one spring element. The sprung diaphragm generates the spring force described above against relative movement between the housing and the support structure. A membrane is a device formed from a thin layer of material. The membrane has a large face size compared to its thickness. The diaphragm forms a biaxially tensioned face. In particular, the membrane can be embodied in the form of a pot or bowl. In the context of the present invention, a snap membrane is advantageous because it requires little space due to its planar structure. The invention thus makes it possible to support the housing in a space-saving manner in a support structure which is fixed relative to the nacelle. In a preferred embodiment, the at least one spring element has a first engagement point and a second engagement point in addition to the sprung diaphragm. The engagement site refers to a device configured for engagement with another engagement site. According to a further development, the at least one spring element is engaged with the housing in a first engagement position and with the support structure in a second engagement position. Specifically, the housing forms a joint with the first joint. The support structure correspondingly forms a further engagement site with the second engagement site. The joining connection between the first joining point and the housing and between the second joining point and the support structure can be embodied in a force-locking, form-locking and/or material-locking manner. In particular, the spring element can be screwed to the housing in a first engagement point and to the support structure in a second engagement point. In this case, the