\begin{tikzpicture}[sketch]

%BILD
\foreach \x in {1,2,...,7}{

	%Massestücke
	\shade[ball color=awesome](\x,0) circle (0.1);
	%Horizontale Federn
	\draw[snake=coil, segment amplitude=1pt, segment length=2pt, dodgerblue]($(\x,0)+(0.05,0)$)--($(\x+0.05,0)+(1,0)$);
	%Senkrechte Federn
	\draw[snake=coil, segment amplitude=1pt, segment length=2pt](\x,0.075)--(\x,0.5);
	%Wand 
	\draw($(\x,0.5)+(-0.25,0)$)--($(\x,0.5)+(0.25,0)$);
		%+Wand Pattern
		\fill[pattern=north east lines] ($(\x,0.5)+(-0.25,0)$) rectangle ($(\x,0.5)+(0.25,0.1)$);
};

%Horizontale Feder
\draw[snake=coil, segment amplitude=1pt, segment length=2pt, dodgerblue](0.4,0)--(0.9,0);

% BESCHRIFTUNG:
%kinetische Energie
\draw[<->, awesome](1,-0.2)--(1,-0.5);
\node (Ekin) [right, awesome, align=center] at (1,-0.5){kinetic energy $\sim (\partial {_t} \phi )^2$};

%stretching
\draw[->, dodgerblue](4.7,-0.2) arc (180:270:0.2);
%(4.5,-0.2)--(4.5,-0.5);
\node (stretch) [right, dodgerblue, align=center] at (4.7,-0.5){\glqq{}stretching\grqq $\sim (\nabla \phi)^2$};

%potential energy
\draw[->] (7.1,0.25) arc(220:310:0.22);
\node (pE) [right, align=center] at (7.3,0.4){potential energy\\[0.1mm]$\sim (\phi)^2$};

\end{tikzpicture}