Traction Drive Module Assembly With Detachable Tension Setting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly of traction drive modules in drivetrains is time-intensive, and existing tensioning devices increase weight, require additional installation space, generate friction, and necessitate wear prevention, making them undesirable.
Innovation Solution
A traction drive module design featuring a detachable assembly aid that adjusts the center-to-center distance between gear wheels to set the tension of the traction means, eliminating the need for a separate tensioning device by using a rotatable first gear wheel mounted on the transmission housing and a movable second gear wheel relative to the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a tensioning device is permanently arranged in the housing to achieve necessary tension of the traction means, then the desired tension is achieved, but the assembly process becomes time-intensive and the device complexity increases
Solution Approach 1:
The tension of the traction means is pre-adjusted during module assembly using a detachable assembly aid, so that when the module is installed in the drivetrain, the correct tension is already in place. This eliminates the need for time-consuming on-site tensioning operations and complex permanent tensioning devices.
Solution Approach 2:
A detachable assembly aid is introduced as an intermediary tool to temporarily maintain the adjusted center-to-center distance between gear wheels during assembly and installation. This assembly aid is removed after installation, having served its purpose of maintaining tension without becoming a permanent part of the system.
2Manufacturing precision
If a tensioning device is arranged in the housing to increase tension of the traction means, then the necessary tension is achieved, but the weight and installation space requirements increase
Solution Approach 1:
The permanent tensioning device is extracted from the final product design. Instead, a simple detachable assembly aid is used temporarily during assembly to set the tension, and then removed. This eliminates the weight and space burden of a permanent tensioning device while still achieving the necessary tension through pre-adjustment of the center-to-center distance between gear wheels.
3Manufacturing precision
If a tensioning device presses laterally against the traction means to increase tension, then the desired tension is achieved, but friction is generated and wear occurs
Solution Approach 1:
The tension is pre-adjusted by setting the correct center-to-center distance between gear wheels before the traction means is installed in the final application. This preliminary adjustment eliminates the need for lateral pressing during operation, thereby preventing friction and wear that would result from continuous contact with a permanent tensioning device.
Solution Approach 2:
The detachable assembly aid serves as a temporary intermediary that maintains the adjusted position without generating harmful friction. Since it is removed after installation, it does not cause ongoing wear to the traction means, unlike a permanent tensioning device that would continuously press against the traction elements.
Data Source
AI summary
The present invention relates to a method for the assembly of or for preparing to assemble a traction drive module (10) in a drivetrain (2) with the method steps: providing a traction drive module (10) having a transmission housing (18) in which are arranged a first gear wheel (40) rotatably mounted on the transmission housing (18), a second gear wheel (48) arranged at a center-to-center distance (58) to the first gear wheel (40), and a traction means (46) via which the first and second gear wheel (40, 48) are in rotary driving connection with one another; attaching an assembly aid (16) acting between the second gear wheel (48) and the transmission housing (18) and detachable from the traction drive module (10); and changing the center-to-center distance (58) by moving the second gear wheel (48) relative to the transmission housing (18) while adjusting a predetermined tension of the traction means (46) by means of the detachable assembly aid (16). In addition, the present invention relates to a traction drive module (10).