Multi-screw-rod section-by-section lifting rod
A lifting rod and screw technology, applied in the field of multi-screw lifting rod section by section, can solve the problems of low reliability, poor structural stability, low connection strength, etc., and achieve the effect of high connection strength and high reliability
Pending Publication Date: 2019-11-19
中国人民解放军第六九〇五工厂
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Problems solved by technology
This kind of lifting rod has only one driving screw rod. After the driving screw rod stretches out and raises the coaxial multi-section circular tubes that are nested together from large to small, the lifting rod relies on the pins and pin holes between adjacent circular tubes. Connected, the connection strength is not high, resulting in the overall strength of the lifting rod is not high, the reliability is low; it is prone to collapse, and the structural stability is poor
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[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0028] Such as Figures 1 to 10 As shown, the multi-screw rod segment-by-node lifting rod according to the present invention includes a base 12 and N round tubes whose diameters are on the same straight line from large to small, and N round tubes are nested together, and between two adjacent round tubes The gaps are the same; the outermost round tube is the bottom tube 1, the innermost round tube is the top tube 2, and the rest are inner tubes;
[0029] The lower end of the bottom pipe 1 is fixedly mounted on the base 12, and a guide device is arranged between the outer wall of the top pipe 2 and the inner wall of the inner pipe; A guiding device is provided between the inner walls; a guiding device is provided between the inner wall of the bottom tube 1 and the outer wall of the outermost inner tube;
[0030] The lower end nozzle of the inner tube ha...
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The invention discloses a multi-screw-rod section-by-section lifting rod. The outer circumference face of a clutch sleeve is provided with locking step grooves, and slopes are arranged at the connecting positions of the locking step grooves. Locking blocks are arranged in the step grooves. The inner walls of the lower ends of the rest of screw rods besides a bottom joint screw rod are provided with locking grooves matched with the locking blocks. Installation holes matched with the locking blocks are formed in the upper ends of the rest of the screw rods besides the bottom joint screw rod. Thelocking blocks are installed in the locking step grooves and are located in the installation holes. Axial guide blocks are arranged on a pipe wall, and N-1 screw rods with outer threads are arrangedin a top pipe, wherein the screw rods are sleeved in sequence with the diameters decreased from large to small, the inner thread at the lower end of the top pipe is screwed on the outer thread of thetop joint screw rod, the lower end of the bottom joint screw rod is provided with a power input end, a casing pipe of the multi-screw-rod section-by-section lifting rod can stretch out by rotating thebottom joint screw rod, after multiple sections of round pipes sequentially stretch out, the adjacent screw rods are connected through the threads, the connecting strength between the round pipes ishigh, and reliability is high.
Description
technical field [0001] The invention relates to a telescopic rod, in particular to a segment-by-section elevating rod of a multi-screw rod. Background technique [0002] The existing elevating rod usually adopts a single screw rod to provide power. The elevating rod has multiple sections of circular tubes that are sleeved together. There is a screw rod at the common axis of the multiple sections of circular tubes. The lower end of each inner tube is installed with a wire. The thread on the rod matches the nut. This kind of lifting rod has only one driving screw rod. After the driving screw rod stretches out and raises the coaxial multi-segment circular tubes that are nested together from large to small, the lifting rod relies on the pins and pin holes between adjacent circular tubes. If it is connected, the connection strength is not high, so that after all the lifting rods are raised, the overall strength is not high, and the reliability is low; it is prone to collapse and...
Claims
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IPC IPC(8): F16B7/10
CPCF16B7/105
Inventor 田贵川蒲苇向泓宇岳波唐昌银
Owner 中国人民解放军第六九〇五工厂