Lab 5. Jacks
Subject: the study and parameters calculation of jacks.
Purpose: to study the kinematic scheme and main elements of the jacks; their main parameters.
Order of execution:
1. Draw the kinematic scheme of the jacks and show the main structural elements.
2. Calculate the load-lifting capacity of the hydraulic jack. In calculation it is nessesary to take into account that allowable pressure in the hydraulic system is equal to 10 MPa.
3. Calculate the load-lifting capacity of the rack and the screw jacks. In calculation it is nessesary to take into account that allowable force of a worker is equal to 150…200 N.
5. Fill the table.
6. Fill the table with suggestions about force gain for all the types of the jacks.
Laboratory class conclusions about design of the jacks, their reliability, operational safety, maintainability.
The report should be properly prepared. Each of the report must be discussed with the lecturer to reveal the level of the student’s knowledge and skills.
Evaluation of the report: maximal score is 10:
8-10 - without comments on the report and meaningful and complete answers during the discussion (defend).
5-7 - there are minor errors in the report and meaningful and complete answers during the discussion;
3-4 - there are minor errors in the report and the issues are not explained properly during the discussion;
1-2 - there are major errors in the report and issues are not explained properly during the discussion.
Deadline: not later a week after its execution.
Methodological support: blank of the report to fill see below.
- 29 січня 2021, 19:11
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