Fastener for heavy transmission parts

Patent metadata

Field	Value
Publication number	US-11635104-B2
Application number	US-202017642958-A
Country	US
Kind code	B2
Filing date	Aug 18, 2020
Priority date	Sep 17, 2019
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A fastener for a transmission part includes a main body. The main body has at least one external screw thread and at least one through-hole. The fastener further includes a first pin displaceable in a first region of the through-hole and a second pin having an external screw thread. A second region of the through-hole has at least one internal screw thread configured to be screwed to the external screw thread of the second pin. The second pin has a through-hole. The first pin has an internal screw thread aligned with the through-hole of the second pin.

First claim

The invention claimed is:

1. A fastener for a transmission part, the fastener comprising:
a main body, wherein the main body has at least one external screw thread and at least one through-hole;
a first pin displaceable in a first region of the through-hole; and
a second pin having an external screw thread;
wherein a second region of the through-hole has at least one internal screw thread configured to be screwed to the external screw thread of the second pin,
wherein the second pin has a through-hole, and
wherein the first pin has an internal screw thread aligned with the through-hole of the second pin.

2. The fastener according to claim 1 , wherein the first pin has at least one groove extending longitudinally, and wherein a part of the main body engages in the groove.

3. A method for fastening a transmission part using a fastener, wherein the fastener comprises:
a main body, wherein the main body has at least one external screw thread and at least one through-hole;
a first pin displaceable in a first region of the through-hole; and
a second pin having an external screw thread;
wherein a second region of the through-hole has at least one internal screw thread configured to be screwed to the external screw thread of the second pin,
wherein the second pin has a through-hole, and
wherein the first pin has an internal screw thread aligned with the through-hole of the second pin, the method comprising:
inserting the first pin into the first region of the through-hole of the main body;
screwing the external screw thread of the main body into an internal screw thread of a structure of a transmission fixed to a housing; and
tensioning the first pin against the transmission part by screwing the external screw thread of the second pin into the internal screw thread of the main body and tensioning the second pin against the first pin.

4. The method according to claim 3 , further comprising:
positioning the second pin such that the first pin and the second pin are spaced apart from each other;
passing a screw through the through-hole of the second pin, and
screwing into the internal screw thread of the first pin.

Assignees

• Zahnradfabrik Friedrichshafen
• Zf Wind Power Antwerpen Nv

Inventors

• De Laet Wim
• Aerts Jan
• Ceyssens Dominiek

Classifications

• F16H57/00

  General details of gearing (of screw-and-nut gearing F16H25/00; of fluid gearing F16H39/00 - F16H43/00) · CPC title

• F16B19/02 Primary

  Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings · CPC title

• F05B2260/40311

  of the epicyclic, planetary or differential type · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F05B2260/301

  Retaining bolts or nuts · CPC title