diff --git a/business/jxstore/event/event_tcp.go b/business/jxstore/event/event_tcp.go
index 09a0546a6..249fefb5c 100644
--- a/business/jxstore/event/event_tcp.go
+++ b/business/jxstore/event/event_tcp.go
@@ -121,17 +121,17 @@ func handleConn(c net.Conn, t *TcpClient) error {
 			//5、修改数据库中打印机状态（没在连接池中说明是重新连接的）
 			//6、监听心跳时间，超过1分多钟就clear掉
 			if t.getClients(printNo) == nil {
-				t.addConn(c, printNo, status)
-				t.buildAllMap(printNo)
+				addConn(c, t, printNo, status)
+				buildAllMap(t, printNo)
 				//t.TimeoutMap[printNo] <- true
-				t.HandleTcpMessages(printNo)
-				t.doPrint(printNo)
+				HandleTcpMessages(t, printNo)
+				doPrint(t, printNo)
 				if status == printerStatusOnline {
 					//t.printFail()
 				}
 				changePrinterStatus(printNo, status)
 				// todo 暂时关闭心跳检测
-				//t.HandleCheckTcpHeart(printNo)
+				HandleCheckTcpHeart(t, printNo)
 				// todo 证明打印机已经被激活,将激活打印机存入数据库,保证用户不能无限制绑定打印机
 				if err := dao.NotExistsCreate(printNo); err != nil {
 					globals.SugarLogger.Debugf("监听打印机心跳,不存在则创建 :[%v],printNo[%s]", err, printNo)
@@ -201,7 +201,7 @@ func (t *TcpClient) changePrintMsg(data string, orderNo int64, printNo string) (
 	return err
 }
 
-func (t *TcpClient) HandleTcpMessages(printNo string) {
+func HandleTcpMessages(t *TcpClient, printNo string) {
 	var (
 		db               = dao.GetDB()
 		offset, pageSize = 0, 10
@@ -267,7 +267,7 @@ func (t *TcpClient) readTimeoutMap(key string) bool {
 	return t.TimeoutMap[key]
 }
 
-func (t *TcpClient) doPrint(key string) (err error) {
+func doPrint(t *TcpClient, key string) (err error) {
 	var (
 		db = dao.GetDB()
 	)
@@ -323,6 +323,7 @@ func (t *TcpClient) doPrint(key string) (err error) {
 									globals.SugarLogger.Debugf("handleTcpMessages err [%v]", err)
 									//close(t.TimeoutMap[key])
 									delete(t.TimeoutMap, key)
+									t = nil
 								} else {
 									//等待回调
 									dataStr := <-t.CallBackMap[key]
@@ -477,16 +478,17 @@ func (t *TcpClient) doPrint(key string) (err error) {
 }
 
 //检测心跳
-func (t *TcpClient) HandleCheckTcpHeart(key string) {
+func HandleCheckTcpHeart(t *TcpClient, key string) {
 	go func() {
 		for {
 			if t.TimeoutMap[key] == true {
 				statusTime := t.getPrintStatusTime(key)
 				if !utils.IsTimeZero(statusTime) {
 					//1分钟内没心跳判断打印机掉线了
-					if time.Now().Sub(statusTime) > time.Minute+time.Second*10 {
+					if time.Now().Sub(statusTime) > time.Second*70 {
 						globals.SugarLogger.Debugf("超过一分十秒没有心跳的打印机[%s]", key)
 						changePrinterStatus(key, printerStatusOffline)
+						t = nil
 						delete(t.TimeoutMap, key)
 					}
 				}
@@ -495,6 +497,7 @@ func (t *TcpClient) HandleCheckTcpHeart(key string) {
 				close(t.MsgMap[key])
 				close(t.CallBackMap[key])
 				t.delConn(key)
+				t = nil
 				return
 			}
 		}
diff --git a/business/jxstore/event/event_tcp_utils.go b/business/jxstore/event/event_tcp_utils.go
index 64f52c2ee..a319471b0 100644
--- a/business/jxstore/event/event_tcp_utils.go
+++ b/business/jxstore/event/event_tcp_utils.go
@@ -151,7 +151,7 @@ func (t *TcpClient) delConn(key string) {
 }
 
 //添加到连接池中
-func (t *TcpClient) addConn(c net.Conn, key string, status int) {
+func addConn(c net.Conn, t *TcpClient, key string, status int) {
 	t.Lock()
 	defer t.Unlock()
 	t.Clients[key] = &PrintInfo{
@@ -190,7 +190,7 @@ func (t *TcpClient) getTimeOut(key string) bool {
 	return t.TimeoutMap[key]
 }
 
-func (t *TcpClient) buildAllMap(key string) {
+func buildAllMap(t *TcpClient, key string) {
 	t.Lock()
 	defer t.Unlock()
 	t.MsgMap[key] = make(chan *model.PrintMsg, 1024)