Telescopic tripod with linkage locking

A telescopic tripod with linkage locking, comprising a support base (1), and three sets of support tubes are hinged on the support base (1) along a circumferential direction, wherein each set of the three sets of the support tubes comprises a first support tube (2), a second support tube (4) and a third support tube (5), a sliding seat (3) is slidably installed on the first support tube (2), the second support tube (4) is fixedly installed on a lower side of the sliding seat (3), an installation seat (13) is installed at a lower end of the second support tube (4), and the third support tube (5) is slidably installed inside the installation seat (13);

• the sliding seat (3) is provided with a first compression member (7) controlled by a locking member (6), the first compression member (7) is in contact with the first support tube (2), the installation seat (13) is provided with a second compression member (8) connected to the locking member (6) through a first steel cable (9), and the second compression member (8) is in contact with the third support tube (5);
• the number of the first support tube (2) in each set of the three sets of the support tubes is two, the sliding seat (3) is provided with a sleeve portion (10) in symmetrical arrangement corresponding to the first support tube (2), the sleeve portion (10) is sleeved on the first support tube (2), a rear side of the sliding seat (3) is provided with a first opening, the first compression member (7) is installed on the first opening, the sliding seat (3) is provided with an installation groove (11), the locking member (6) is rotatably installed in the installation groove (11), and the locking member (6) is connected to the first compression member (7) through a second steel cable (12).