55results about How to "Not easy to reverse" patented technology

The invention discloses a horizontal general plug, which comprises a shell, a mounting plate, a plurality of pins and a plurality of connection flat gaskets, wherein an opening is formed at the front end of the shell; the pins are divided into flat sheets and circular rods; the mounting plate is arranged at the opening of the shell in a matching mode; a plurality of mounting holes which are distributed horizontally are formed on the mounting plate; a plurality of pin containing grooves which are distributed horizontally are formed in the shell; the circular rods or the flat sheets of the pinsare positioned in the pin containing grooves of the shell through the mounting holes of the mounting plate so that the flat sheets or the circular rods of the pins are arranged outside the mounting holes of the mounting plate in the matching mode; a plurality of leads are arranged in the shell; and the pins are connected with the corresponding leads through the connection flat gaskets in the shell respectively. The plug integrates the flat sheets and the circular rods into a whole and is detachable, so that a user can assemble the plug manually or increase or decrease the quantity of the pins. Therefore, the generality of the plug provided by the invention is good.

Stator casing (8) of an eccentric screw pump (4) having an elastomeric stator inner part (9) containing a plurality of shell-like casing segments (6), and production method for a stator casing of this kind, with which the expenditure on servicing work can be reduced. To this end, according to the invention, casing segments (6) which are adjacent in the longitudinal direction of the stator casing (8) are arranged around the longitudinal axis of the stator casing (8) such that they are offset in relation to one another, wherein each casing segment (6) has connecting means (18) and at least four casing segments (6) are in engagement with one another and form a composite. In order to produce the stator casing (8), an axial force component is applied to the casing segments (6) by clamping, wherein the casing segments (6) engage with one another, as a result of which a radial force component is generated and the composite is formed.

The invention discloses a sealing structure capable of adjusting the sealing degree. The sealing structure comprises an accommodating box, wherein a fixed plate is arranged on the upper side of the accommodating box; a conical sealing plug is fixedly connected with the lower side of the fixed plate; a sealing opening corresponding to the conical sealing plug is formed in the top of the accommodating box; a mounting cover is fixedly connected with the bottom of the accommodating box; and two symmetrical transmission shafts are connected into the mounting cover through a transmission mechanism.According to the sealing structure, through cooperation of the transmission mechanism and a lifting mechanism, the conical sealing plug is driven to move downwards so as to adjust the sealing degree of the sealing opening, so that the conical sealing plug and the sealing opening fit closer; through cooperation of an outer gear ring, a support plate, a first spring, a limiting plate and liming teeth, the position of the conical sealing plug is not changed, so that the conical sealing plug does not move due to change of air pressure to enable the sealing degree of the conical sealing plug to behigher.

The invention relates to a preparation method of a titanium alloy spring made of a wire with a specially-shaped section and belongs to the technical field of springs. The spring is formed by winding of the titanium alloy wire with the specially-shaped section; the titanium alloy wire comprises the components in percentage by mass as follows: 2-4 of Al, 6-10 of V, 4-8 of Cr, 2-6 of Mo, 2-6 of Zr, 0.1-0.3 of Fe, 0.03-0.15 of Si and the balance of Ti. The section of the titanium alloy spring wire can be rectangular, square, orthohexagonal or oval. The titanium alloy wire wound into the spring is prepared with forging, pressing and hot rolling technologies, the wire is subjected to solution treatment before being wound into the spring, and a finished product of the spring is subjected to aging and strengthening treatment. A titanium alloy which is used for preparing the spring can play a weight reduction role, and meanwhile, the titanium alloy has the good corrosion resistance and the long fatigue life in an ocean environment. With the adoption of the wire with the specially-shaped section, the section area can be increased under the condition that specifications of wires are similar, so that the rigidity of the spring is improved, and the usage requirement of the titanium alloy spring under the high workload can be met.

The invention discloses a sliding-friction pendulum combined shock-insulation layer with an ultra-large bottom surface. The combined shock-insulation layer comprises an upper spherical shell layer, a lower spherical shell layer and sliding frames. Four arc-shaped spherical faces are arranged on the upper surfaces of the lower spherical shell layer. Four arc-shaped spherical faces are arranged on the lower surface of the upper spherical shell layer. Each sliding frame is composed of a plurality of sliding blocks, upper connecting components, lower connecting components, connecting beams and sliding frame columns, wherein the sliding frame columns are connected between the upper connecting components and the lower connecting components, and the lateral portions of the upper connecting components and the lateral portions of the lower connecting components are connected with the connecting beams. The upper end surfaces of the upper connecting components and the lower end surfaces of the lower connecting components are welded to the sliding blocks. The sliding frames are in overlap joint with the arc-shaped spherical faces of the upper spherical shell layer and the arc-shaped spherical faces of the lower spherical shell layer through the sliding blocks. According to the sliding-friction pendulum combined shock-insulation layer with the ultra-large bottom surface, the sliding frames are formed through connection of the sliding blocks, and the integral shock-insulation layer is formed by the sliding frames, the upper spherical shell layer and the lower spherical shell layer; and the span of the shock-insulation layer is quite large, the allowable deformation, in the horizontal direction, of the shock-insulation layer is far larger than that of a shock-insulation support, and the requirement for horizontal deformation of the shock-insulation layer under an extremely-powerful earthquake can be completely met.