The structure of the loading and unloading sleeve takes into account that the factory generally uses electric (or pneumatic) wrenches for automatic operation. I designed a stud bolt loading and unloading tool loading and unloading sleeve for use with an electric wrench. The structure is as shown. The loading and unloading sleeve shown in the schematic diagram of the loading and unloading sleeve structure can realize the installation and disassembly of the M10M20 stud bolt. The whole sleeve is mainly composed of a square nut matched with the stud bolt, a non-slip component for preventing the square nut from falling off, a casing and a mandrel. , the pin and other parts. When using the working method and working principle of the loading and unloading sleeve, first select the corresponding square nut according to the specifications of the field stud bolt, and install it securely in the sleeve outer casing, then screw the stud bolt into the workpiece inner buckle by hand. As long as it does not fall, then use the loading and unloading sleeve to align the exposed end of the stud bolt and start the power supply. During the initial rotation of the electric wrench, the outer casing 3 and the pin nut 5 are rotated by the mandrel 4 and the pin 5 to screw the stud bolt into the square nut; when the stud bolt contacts the ball end of the mandrel 4 The two are tightened to each other; the electric wrench continues to rotate, the square nut drives the double-headed screw to quickly screw into the workpiece and is reliably tightened; after the tightening is completed, the electric wrench is reversed, because the angle of the spiral groove of the outer casing is larger than the angle between the stud and the square nut The equivalent friction angle (more than the thread angle of the stud), and the contact area between the mandrel ball and the stud is small, the friction is also small, so the mandrel and the pin are first retracted, and the pair is released. The topping force and friction of the stud bolt, the pre-tightening force between the stud bolt and the square nut is naturally released, and finally the sleeve is withdrawn. The above describes the mounting sleeve used to mount the stud. When we remove the stud, a similar disassembly sleeve can be used, for example. The structure and principle are identical to the mounting sleeve, the only difference being that the spiral groove of the housing is left-handed. Since the reason is the same, it will not be described. Disassembly of the sleeve structure to illustrate the characteristics of the loading and unloading sleeve and manufacturing requirements The assembly and disassembly sleeve has the following characteristics: a. Simple structure, easy to manufacture, suitable for the factory to manufacture and manufacture; b. Good versatility, convenient and reliable use, and electric ( Or the pneumatic wrench) can also be used together with the universal crank handle; c. It can be used to manufacture and replace the square nut to adapt to a variety of studs; d. Each component can be easily replaced, and can be replaced immediately if it is damaged. The main part processing and design requirements 1 coat spiral groove angle. In order to ensure the tightening force and friction between the mandrel and the stud bolt in the process of installing the bolt, the angle λ of the spiral groove must be made larger than the equivalent friction angle between the stud bolt and the square nut. Ï (generally Ï = 6°). In this figure, λ = 10 ° ~ 12 °. 2 coat materials. In order to ensure sufficient rigidity and strength of the jacket, it is best to use 40Cr and heat treatment HRC40-45. Starch Slurry Pump,Paper Making Starch Slurry Pump,Making Industry Lobe Pump,Starch Slurry Transfer Pump NINGBO DURREX PUMPS CO.,LTD , https://www.durrexlobepump.com
The structure of the loading and unloading sleeve takes into account that the factory generally uses electric (or pneumatic) wrenches for automatic operation. I designed a stud bolt loading and unloading tool loading and unloading sleeve for use with an electric wrench. The structure is as shown. The loading and unloading sleeve shown in the schematic diagram of the loading and unloading sleeve can realize the installation and disassembly of the M10M20 stud bolt.