Tikz：将三条平行线合并为一个更大的箭头

Question

我有一个 tikz 绘图，其中有三条平行线和一个大箭头。我希望这三条线在开头合并到大线中。有人能建议我怎么做吗？

\begin{center}
\begin{figure}[t!]
    \resizebox{0.7\textwidth}{!}{
    \begin{tikzpicture}[font=\sffamily]
    \node[draw=none, fill=none] (sender) {};
    \node[draw=none, fill=none, right =6cm of sender] (provider) {};

    \coordinate (wall) at ([xshift=-2.5cm]provider.west);

    \draw[transform canvas={yshift=4.5ex}, line width = 2pt] (sender) -- node [text width=2.5cm,midway,above] {Line 1} (wall);
    \draw[transform canvas=, line width = 2pt] (sender) --node [text width=2.5cm,midway,above] {Line 2} (wall);
    \draw[transform canvas={yshift=-4.5ex}, line width = 2pt] (sender) -- node [text width=2.5cm,midway,above] {Line 3} (wall);
    \draw[transform canvas=,->, line width = 5pt] (wall) -- node [text width=2.5cm,midway,above=1em] {Large line} (provider);
  \end{tikzpicture}
}
\end{figure}
\end{center}

Answer 1

像这样？

\documentclass[tikz, margin=3mm]{standalone}
\usetikzlibrary{arrows.meta, positioning, shapes.arrows}

\begin{document}
    \begin{tikzpicture}[
node distance=2mm and 12mm,
  A/.style = {single arrow, draw=gray, fill=gray, 
              single arrow head extend=1.5mm,
              minimum height=12mm, minimum width=12mm,
              outer sep=0mm},
box/.style = {rectangle, draw, minimum size=12mm},
                        ]
\node (s)   [box]               {sender};
\node (a)   [A,right=of s]      {};
\node (r)   [box,right=0mm of a]{receiver};
%
\coordinate[above=of s.east] (sa);
\coordinate[below=of s.east] (sb);
%
\draw[very thick]   
        (sa)        --    (a.tail |- sa)
        (s.east)    --    (a)
        (sb)        --    (a.tail |- sb);
    \end{tikzpicture}
\end{document}

笔记：

• 切勿将浮动环境置于\begin{center}和之间\end{center}
• 请不要只发送代码片段。始终提供最小的工作示例（姆韦)，一个很小但很完整的文档，以 开头\documentclass{...}，以 结尾\end{document}。在序言中，只加载与您的问题相关的软件包。

Answer 2

你想要这样的东西吗？

正如 Zarko 告诉你的那样，我已经使用了\centering环境center。

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows.meta, positioning, shapes.arrows}

\begin{document}
\begin{figure}[t!]
    \centering
    \resizebox{0.7\textwidth}{!}{%
        \begin{tikzpicture}[font=\sffamily]
            \node[draw=none, fill=none] (sender) {};
            \node[draw=none, fill=none, right =6cm of sender] (provider) {};

            \coordinate (prewall) at ([xshift=-3cm]provider.west);
            \coordinate (wall) at ([xshift=-2.5cm]provider.west);

            \draw[line width = 2pt] ([yshift=4.5ex]sender.east) -- node [text width=2.5cm,midway,above] {Line 1} ([yshift=4.5ex]prewall) -- ([shift={(1pt,1pt)}]wall.west);
            \draw[transform canvas=, line width = 2pt] (sender) --node [text width=2.5cm,midway,above] {Line 2} (prewall) -- (wall.west);
            \draw[line width = 2pt] ([yshift=-4.5ex]sender.east) -- node [text width=2.5cm,midway,above] {Line 3} ([yshift=-4.5ex]prewall) -- ([shift={(1pt,-1pt)}]wall.west);
            \draw[transform canvas=,->, line width = 5pt] (wall) -- node [text width=2.5cm,midway,above=1em] {Large line} (provider);
        \end{tikzpicture}
}
\end{figure}
\end{document}