Stepless-speed-change oil tube clamping and screwing machine
A continuously variable transmission and oil pipe technology, which is applied in the field of continuously variable transmission oil pipe wrench and screwing machine, can solve the problems of easy damage to the equipment, out-of-speed gear shift, and difficult operation, etc. simple effect
Inactive Publication Date: 2011-08-24
孙进
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Problems solved by technology
Therefore, existing oil pipe tongs and twisting machines have the following defects in their speed change methods: shifting out, noise, easy damage to equipment, and high difficulty in operation.
Method used
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[0008] as attached figure 1 As shown, the planetary gear train of the present invention is formed by the sun gear 1 , the planetary gear 2 , the sun gear 3 and the member 4 . One of the hydraulic motors 6 meshes with the center wheel 1 through one of the gears 5; the other hydraulic motor 6 meshes with the sun gear 3 through the other gear 5, so the power of the two hydraulic motors 6 is respectively The input is on the center wheel 1 and the sun wheel 3, and the flows of the two hydraulic motors 6 are respectively controlled by the two proportional speed regulating valves 7, which forms the power input system of the present invention. In order to balance the centrifugal inertial force generated by the planetary gears and reduce the force of the planetary gears, six planetary gears 2 are symmetrically distributed between the center gear 1 and the sun gear 3 . Each end of the six connecting shafts 7 is respectively fixed to the central shafts of the six planetary wheels 2; eac...
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The invention relates to a stepless speed-change oil tube clamping and screwing machine, which is an electric control for screwing or unscrewing a thread connecting device and belongs to the field of machine manufacture. In the invention, double hydraulic motors are used to drive a speed-change mechanism of a planetary wheel train to realize adjustability and controllability of rotating speed, and differential speed is used to realize stepless speed change. The stepless-speed-change oil tube clamping and screwing machine is characterized in that the planetary wheel train consists of a central wheel, a planetary wheel, a sun wheel and components, wherein the central wheel, the planetary wheel and the sun wheel are arranged from inside to outside in sequence; and the inner teeth of the sun wheel and the outer teeth of the central wheel are meshed with the outer teeth of the planetary wheel respectively. The central wheel and the sun wheel are respectively connected with corresponding hydraulic motors by gears. One end of a main clamp is connected with a planetary wheel shaft by a connecting piece, and the other end of the main clamp is fixed to a single extending rod oil cylinder. The stepless-speed-change oil tube clamping and screwing machine is simple to operate and has the advantages of large speed ratio, large torque, no impact in speed change, no noise and the like, the equipment is not easy to be damaged.
Description
technical field [0001] The invention relates to a continuously variable oil pipe wrench and a screwing machine, which is an electric tool for screwing or removing a screw connection device, and belongs to the field of mechanical manufacturing. Background technique [0002] Currently on the market, the driving force of the oil pipe wrench and screwing machine electric tools used for screwing and breaking is realized by the hydraulic motor through gear shifting. The working characteristics of make-up and breakout are: the torque is small and the speed is high when the make-up is pre-tightened; after the make-up, the torque gradually increases and the speed gradually decreases. Thereby existing oil pipe tongs, its speed change mode of twisting machine exist: the defects such as shifting out, having noise, easy damage of equipment, difficult operation. Therefore changing the rotary speed change mode of existing tubing tongs and screwing machines to make up for the defects cause...
Claims
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Inventor 孙进
Owner 孙进