Pulley system with equal spacing

  • Thread starter Thread starter youp tulpin
  • Start date Start date
  • Tags Tags
    Pulley
Click For Summary

Discussion Overview

The discussion revolves around the design of a pulley system with equally spaced attachment points along a vertical bar. Participants explore the mechanics of how these pulleys would function when a force is applied, particularly focusing on the movement of attachment points and their relative speeds.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant describes a desired outcome where attachment points A, B, and C rise at different speeds but reach the top simultaneously.
  • Another participant requests clarification on the type of mechanism being envisioned and asks for a diagram to better understand the concept.
  • A participant explains the mechanics of movement in the system, noting that the distance moved by each attachment point is proportional to its position (1T for A, 2T for B, and 3T for C).
  • A later reply indicates that the original poster has gained clarity on their idea through sketches and mentions considering telescopic sliders as a potential solution.

Areas of Agreement / Disagreement

The discussion does not present a consensus, as participants are exploring different aspects of the pulley system design and mechanics without settling on a single approach or solution.

Contextual Notes

Participants have not provided detailed diagrams or specific mathematical formulations, which may limit the clarity of the proposed mechanisms. The discussion also lacks resolution on the optimal design or configuration of the pulley system.

youp tulpin
Messages
3
Reaction score
2
Dear readers,

I want to design a pulley system like in the schematic below, a system where the distance between certain attachment points are equally spaced along a vertical bar. The main feature of these pulleys is that when a force (F) is applied on one end of the cable, the attachment points (A, B, C) move upwards and the distance between them closes and stays the same between point A and B but also between B and C, much like the crossing joints of a scissor mechanism.

Any ideas?

Kind regards.
 
Engineering news on Phys.org
youp tulpin said:
Dear readers,

I want to design a pulley system like in the schematic below, a system where the distance between certain attachment points are equally spaced along a vertical bar. The main feature of these pulleys is that when a force (F) is applied on one end of the cable, the attachment points (A, B, C) move upwards and the distance between them closes and stays the same between point A and B but also between B and C, much like the crossing joints of a scissor mechanism.

Any ideas?

Kind regards.
IMG_5968.jpeg
 
Welcome to PF.

So you want;
A to rise at a speed of 1.
B to rise at a speed of 2, and
C to rise at a speed of 3.
They will all reach the top at the same time.
 
Welcome? :cool:
Besides the pulleys, what type of mechanism do you have in mind?
Can you provide a diagram of your general idea, please?



 
Here, the three systems are shown separated. There may be duplicated pulleys when all three are combined. Notice that the top pulleys are anchored, but the lower pulley blocks are moved by a distance of T.

The movement of length T, results in a movement determined by the number of falls to T.
1T for point A; 2T for point B; 3T for point C.

1,2,3_Pulleys.jpg
 
Baluncore said:
Here, the three systems are shown separated. There may be duplicated pulleys when all three are combined. Notice that the top pulleys are anchored, but the lower pulley blocks are moved by a distance of T.

The movement of length T, results in a movement determined by the number of falls to T.
1T for point A; 2T for point B; 3T for point C.

View attachment 341297
Sorry for the late reply, I understand how to progress my idea with these sketches, thank you!

I will also look into the telescopic sliders recommended by @Lnewqban, it might even be what I needed in the first place.

Cheers!
 
  • Like
Likes   Reactions: berkeman and Lnewqban

Similar threads

  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 22 ·
Replies
22
Views
7K
  • · Replies 10 ·
Replies
10
Views
5K
  • · Replies 10 ·
Replies
10
Views
1K
  • · Replies 27 ·
Replies
27
Views
11K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 16 ·
Replies
16
Views
3K
Replies
13
Views
4K