Lifting machine

A lifting machine, comprising:

• a base, and
• a carrying platform, wherein a lifting mechanism for lifting the carrying platform and a power mechanism for supplying power to the lifting mechanism are arranged between the carrying platform and the base,
• wherein the base comprises:
• a front base supporting rod and a rear base supporting rod which are horizontally arranged and are equal in length, wherein the front base supporting rod and the rear base supporting rod are arranged in parallel in front-to-back manner, wherein the left end of the front base supporting rod and the left end of the rear base supporting rod are connected through a first rotating shaft, and the first rotating shaft is rotatably connected to the left end of the front base supporting rod and the left end of the rear base supporting rod,
• wherein the carrying platform comprises:
• two carrying platform supporting rods with equal length which are horizontally arranged, wherein lengths of the two carrying platform supporting rods are greater than that of the front base supporting rod, wherein the two carrying platform supporting rods are arranged in parallel in front-to-back manner, wherein the left ends of the two carrying platform supporting rods are connected through a second rotating shaft, and the second rotating shaft is rotatably connected to the left ends of the two carrying platform supporting rods, wherein the right ends of the two carrying platform supporting rods are connected through a third rotating shaft, and the third rotating shaft is rotatably connected to the right ends of the two carrying platform supporting rods,
• wherein the lifting mechanism comprises:
• a first lifting rod, a second lifting rod, a third lifting rod, a fourth lifting rod, a fifth lifting rod, a sixth lifting rod, a seventh lifting rod and an eighth lifting rod which are equal in length, wherein the first lifting rod and the second lifting rod are arranged in parallel in front-to-back manner, the third lifting rod and the fourth lifting rod are arranged in parallel in front-to-back manner, the fifth lifting rod and the sixth lifting rod are arranged in parallel in front-to-back manner, and the seventh lifting rod and the eighth lifting rod are arranged in parallel in front-to-back manner, wherein a first pin shaft is rotatably erected between the two carrying platform supporting rods, and the first pin shaft is arranged between the second rotating shaft and the third rotating shaft, wherein the upper ends of the first lifting rod, the second lifting rod, the fifth lifting rod and the sixth lifting rod are respectively rotatably arranged on the first pin shaft, wherein the lower ends of the fifth lifting rod and the sixth lifting rod are rotatably arranged on the first rotating shaft, and the upper ends of the third lifting rod and the fourth lifting rod are rotatably arranged on the second rotating shaft, wherein the lower end of the first lifting rod is connected to the lower end of the third lifting rod through a first connecting rod, and the lower end of the first lifting rod is rotatably connected to the right end of the first connecting rod, wherein the lower end of the third lifting rod is rotatably connected to the left end of the first connecting rod, and the lower end of the second lifting rod is connected to the lower end of the fourth lifting rod through a second connecting rod, wherein the lower end of the second lifting rod is rotatably connected to the right end of the second connecting rod, and the lower end of the fourth lifting rod is rotatably connected to the left end of the second connecting rod, wherein the upper ends of the seventh lifting rod and the eighth lifting rod are rotatably arranged on the third rotating shaft, wherein the lower end of the seventh lifting rod is rotatably connected to the right end of the front base supporting rod, and the lower end of the eighth lifting rod is rotatably connected to the right end of the rear base supporting rod, wherein the lower ends of the third lifting rod and the fourth lifting rod are connected through a fourth rotating shaft, wherein the lower ends of the third lifting rod and the fourth lifting rod, as well as the left ends of the first connecting rod and the second connecting rod, are rotatably connected with the fourth rotating shaft, wherein a locking mechanism for locking a highest lifting position of the carrying platform is arranged in front of the fourth rotating shaft and the first rotating shaft, wherein the power mechanism is an oil cylinder, wherein a horizontal driving connecting rod is fixedly erected between the seventh lifting rod and the eighth lifting rod, wherein a cylinder body of the oil cylinder is rotatably arranged on the driving connecting rod, and a piston rod of the oil cylinder is rotatably arranged on the fourth rotating shaft.