How to Inject Laravel 5.2 “IlluminateHttpRequest” in your custom classes?

I am new to laravel and I got a question here. I am trying to inject 'IlluminateHttpRequest' to my custom Class.

Error: __construct() must be an instance of IlluminateHttpRequest, none given,

What is wrong with my code below? Thanks!

namespace AppLibrary;

use Crypt;
use IlluminateHttpRequest;

class MenuAccess
{

    public function __construct(Request $request){
        $this->request = $request;
    }

    public function setLoginSession($user){

       $user = Crypt::encrypt($user);

       $this->request->session()->put('PAZPOSID', $user);

       retu $request->session()->pull('PAZPOSID');

    }

}