What can I do if my spouse threatens to end his life?

My wife mentally harasses me and my family. She repeatedly threatens to trap me and my family by committing suicide. She once even threatened to burn herself and my son on gas. She faces difficulty in doing the household work. Now tell me, what is the benefit of my getting married when only my mother and sister will do the work? Because of all this, one day I hit him in anger and he got injured on his head. After which he got me locked up. After this, she went to her house without telling anyone, she went out on the back track, not allowing my family members to even look at the children's faces. Now she will come again and will do it like this again. She also abuses my parents due to which it becomes difficult to control my anger. Due to all these things, my family is very worried and their mental and physical health is also being affected a lot. Please help me