How to load scripts in WP Admin from plugins

I know the question have been asked many times, but none of them doesn’t actually meet me. So without saying bla bla, I’m saying my situation first:

In my plugin, I need to add a custom post type, then to load custom meta box, and to sort the meta box in good way I need to add them using jquery tab.
From these, I could implement the first two:
– Making CPT
– Adding Meta box and could save meta data

But I’m unable to load the jquery thing for the tabs.

As I know I can utilize the default jquery and jquery-ui-tabs and enqueue them in admin end. But when I’m using:

function load_scripts() {
   wp_enqueue_script( 'jquery' );
   wp_enqueue_script( 'jquery-ui-tabs' );
}
add_action('admin_enqueue_scripts', 'load_scripts');

The tabs are not working. But if I load my custom jquery and ui scripts from my plugin, the tabs are working…but,
but, the tab is working only on the “Add new PostType” page (post-new.php), but NOT WORKING on PostType Edit Page (post.php).

So here comes the million dollar question:
* How can i load scripts in wp admin from plugin – the right way?