8results about How to "Controllable size" patented technology

The application provides a straddle type bogie frame and a straddle type monorail vehicle, the straddle type bogie frame comprising a combined beam and a down bending beam, the combined beam comprising a high side beam, a low side beam, a traction beam connecting the high side beam and the low side beam, and an end beam connecting the high side beam and the low side beam, the number of the down bending beams being two, and the two down bending beams being connected with the high side beam and the low side beam respectively, and the combined beam and the down bending beam being connected in a T joint fillet welding and V type butt joint welding mode. The straddle type bogie frame and the straddle type monorail vehicle are formed by combining and welding the combined beam and the down bending beam formed in a split mode, the air chamber is independently formed in the down bending beam, the low side beam and the high side beam are decoupled, the structure is better in stress bearing, and the weld accessibility is better; the combined beam serves as a base, and when the combined beam is combined with the down bending beam, the overall welding deformation is small, the combined beam is not prone to twisting, and the size after welding is easy to control.

The invention relates to the technical field of fluorescent contrast agents, in particular to a preparation method of a melanin-like nanocapsule fluorescent probe based on lung injury detection. The nanocapsule type fluorescent probe is a melanin-like nanocapsule type fluorescent probe with a hollow structure. According to the method for preparing the melanin-like nanocapsule type fluorescent probe, the biocompatible polydopamine nanocapsule can be simply and efficiently prepared, and polydopamine has a chemical structure similar to melanin, has good biocompatibility / biodegradability, low toxic and side effects and controllable size, is easy to mark by near-infrared fluorescent dye, and can be used for preparing the melanin-like nanocapsule type fluorescent probe. And the method can be used as an effective strategy for curative effect monitoring. Besides, based on a unique hollow structure, the self weight of the polydopamine capsule is obviously reduced, and the polydopamine capsule is relatively stable in an aqueous solution, uniform in size and good in dispersity, and has a good prospect in the field of fluorescence imaging.

The invention discloses a detachable drag chain wheel fixing seat and a walking frame for a large excavator. The detachable drag chain wheel fixing seat comprises a plate body and a supporting body. The number of the supporting bodies is two, the two supporting bodies are symmetrically welded to the upper end face of the plate body in parallel, the plate body is provided with a walking frame connecting hole, and the upper end of each supporting body is provided with a wheel shaft base connecting hole; the plate body is connected with the plate body connecting hole in the walking frame welding piece through the walking frame connecting hole and the first connecting piece; the axle seat connecting holes of the supporting bodies are connected with axle seats through second connecting pieces, axles are arranged in the axle seats, and the axles are provided with drag chain wheels between the two supporting bodies. The detachable drag chain wheel fixing seat is convenient to mount, dismount and maintain, and once the detachable drag chain wheel fixing seat is damaged, the detachable drag chain wheel fixing seat can be maintained or remanufactured according to the damage degree.

The utility model discloses a novel hinge joint which comprises a device body, the device body comprises a hinge body and a hinge screw, and the hinge screw is inserted into the hinge body; the hinge screw is of a cylindrical structure, an O-shaped ring groove is formed in the left side of the hinge screw, and an O-shaped ring is installed in the O-shaped ring groove. A combined pad is arranged in the left end of the hinge body and located on the outer side of the left end of the hinge screw, and the combined pad is of a trapezoid structure. According to the device, the hinge body and the hinge screw are sealed in the radial direction through the O-shaped ring, the hinge body and the surface of the friction pair are sealed through the combined gasket, in this way, the sealing performance of connection of the hinge body and the hinge screw can be improved, and the situation of oil leakage is prevented.

The utility model discloses a valve port structure for a composite material tank car, which belongs to the technical field of transportation tank car parts and comprises a discharging flange and a composite material anti-corrosion component. The discharging flange comprises a flange main body part which is a barrel head, one end of the flange main body part is provided with an annular convex part which extends towards the inner side, and the other end of the flange main body part is provided with a flange connecting section which extends towards the outer side; the composite material anti-corrosion component comprises an anti-corrosion component body part wrapping the flange body part and the annular protruding part. An anti-corrosion part fixing section covering the surface of the flange connecting section is arranged at one end of the anti-corrosion part main body part; a flange connecting hole is formed in the end part of the flange main body part, and a hole is formed in the position, corresponding to the flange connecting hole, of the anti-corrosion part main body part. The composite material anti-corrosion component made of the composite material is arranged on the outer side of the metal flange, so that a good anti-corrosion effect can be provided. The composite anti-corrosion part made of the composite material is prepared through a mold, and the size of the composite anti-corrosion part is easy to control.

This utility model discloses a plastic pedal assembly with a damping structure, comprising: a brake base, a brake arm, a main shaft bushing, a main shaft sleeve, a spring sleeve, a damping spring, and a main shaft. The upper end of the brake arm is located inside the brake base, and a pedal pad is mounted on the brake arm. Both ends of the main shaft bushing pass through the brake arm. Two main shaft sleeves are symmetrically arranged at both ends of the main shaft bushing. The spring sleeve is located at one end of the main shaft bushing. The damping spring is sleeved on the outer wall of the spring sleeve and connects the brake base and the brake arm. One end of the main shaft passes through the brake base, the two main shaft sleeves, and the main shaft bushing and extends out of the brake base. Through the application of this utility model, a plastic pedal assembly with a damping structure is proposed. Compared with existing pedal structures, it not only reduces the overall weight of the pedal while ensuring structural strength, but also reduces noise generated when pedaling and improves the pedal's return damping, thus optimizing the pedal's return effect.

The present invention provides a method for making an artificial compound eye, comprising the following steps: Step 1: obtaining a curved substrate, wherein the first surface of the curved substrate is hydrophobic; Step 2: obtaining a soft mask having a through-hole array, and attaching the soft mask to the first surface of the curved substrate; Step 3: performing hydrophilic-hydrophobic patterning treatment on the first surface of the curved substrate, so that the first surface has a plurality of hydrophilic areas; Step 4: contacting the first surface with an optical liquid, wherein the optical liquid forms a microlens array on the first surface by self-assembly, thereby obtaining the artificial compound eye. The present invention is used to improve the problems existing in the existing method for making an artificial compound eye, such as high cost, low efficiency, poor precision, and many limiting factors.

The invention relates to a high-precision capillary bell mouth automatic blowing method. The capillary is rotated and heated at a non-end position to soften the capillary at the position to a certain extent, and then the capillary is blown. The softened position is bubbled to a required size by the pressure of the gas on the inner wall of the capillary. Finally, the bubbled position is cut to obtain the capillary with a bell mouth at the end. The overall process has good processing uniformity, the size is easy to control, and the danger and chemical pollution of the conventional production process are avoided, and the processing efficiency of the product is greatly improved.