56results about How to "Not easy to squeeze and deform" patented technology

The invention provides a chocolate packing box, comprising a box body and a box cover. A sealing ring is arranged on the box cover and arranged between the box body and the boxy cover; the box cover is buckled with the box body by a buckling device; a door is arranged on the front surface of the box body and can be rotated through a rotary shaft; a buckle is formed on the door and used for closing or opening the door; the door and the rotary shaft are adaptive with the front surface of the box body. The chocolate packing box has a simple structure and is difficult to be extruded and deformed during transportation; because of the sealing ring, the chocolates are prevented from going bad resulting from the influencing of temperature and can be stored for a long time and the taste of the chocolates is not influenced; the door is arranged on the front surface of the box body and the chocolate packing box can store some things such as coins after the chocolates are eaten up; therefore, the chocolate packing box can be used again and does not result in a waste.

The invention discloses an amplitude-variable control system of a main arm of a crane and the crane, for improving the operation stability and the security of the crane. The amplitude-variable control system of the main arm of the crane comprises a reversing valve, amplitude-variable cylinders, rod cavity balance valves, a check valve and an oil replenishing device, wherein the reversing valve has a first working position and a second working position for respectively controlling the amplitude-variable cylinders to fall back and rise up, and comprises a first working oil hole, a second working oil hole, an oil inlet and an oil back hole; the rod cavity balance valves are arranged on rod cavity oil hole paths of the amplitude-variable cylinders and are closed when the amplitude-variable cylinders fall back and are opened when the amplitude-variable cylinders rise up; the check valve is arranged on an oil path between the first working oil hole of the reversing valve and the rod cavity balance valves and is conducted when a main arm is put down through power and is cut off when the main arm is put down through gravity; the oil replenishing device is arranged on an oil path between the oil back hole of the reversing valve and the rod cavity balance valves and is used for replenishing hydraulic oil into the rod cavities of the amplitude-variable cylinders when the main arm is put down through gravity.

The invention provides a lens, comprising an optical part at the center of the lens and a non-optical part at the periphery around the center of the lens, wherein the non-optical part is provided with two opposite surfaces while at least one surface is provided with a plurality of convexes extended along the circumference of at least one concentric circle centered around the optical part. The lens has the advantages that the lens has high structure strength and is difficult to be compressed and deformed.

The invention discloses a plant rhizosphere box and the application thereof in the micro-domain research of wet land plant rhizosphere. The plant rhizosphere box comprises a box body, the inside space of the box body is partitioned into a root zone, a near root zone, a far root zone and a non-root zone and other different rhizosphere micro-domain partition zones by a number of rhizosphere partition plugging plates, water distribution units are arranged on the upper part of the box body, and water level regulating units are also arranged on the box body; and a water discharging device is arranged on the bottom of the box body. Through the adjustment of the intervals between the different rhizosphere micro-domain partition zones, the accurate observation and the research of the differentiation changes of different distances from the root system, and / or root zone soil, and / or interval water nutrients, pollutant, and / or microorganism are achieved. Based on the plant rhizosphere box, water flooded habitat of plants grown in wet land can truly be simulated, so that water flow conditions in the substrate can be maintained, and different water pressure retention time and water levels are arranged according to the needs, and the plant rhizosphere box has wide application prospect in plants, especially in the micro-domain research of wet land plant rhizosphere.

The invention provides a machining process for an extrusion die. The machining process is used for machining the extrusion die sleeved on a roll shaft of a granulator. A die blank with die holes is subjected to thermal treatment and finish machining, and each die hole is subjected to extrusion and grinding treatment. The thermally treated extrusion die has strong strength, cannot be cracked after being extruded for a long time, and is long in service life; the die holes are high in compressive resistance and bending resistance, and cannot be deformed by extrusion; after the finish machining, the extrusion die can rotate stably, and the yield is high; in addition, the grinding cost of the extrusion mode is low, and two die blanks can be ground by once extrusion, so that the grinding efficiency is high; and the die holes of the ground die blanks are low in roughness, and extruded products are easy to de-mold.

The invention provides a lens, comprising an optical part at the center of the lens and a non-optical part at the periphery around the center of the lens, wherein the non-optical part is provided with two opposite surfaces while at least one surface is provided with a plurality of convexes extended along the circumference of at least one concentric circle centered around the optical part. The lens has the advantages that the lens has high structure strength and is difficult to be compressed and deformed.

The invention relates to a double-coil contact structure of a vacuum interrupter in a mechanical high-voltage DC circuit breaker. It is composed of two completely identical contact structures. The outer diameters of the ring coil and the ring contact are the same. The round surface of the large head of the conductive rod, the ring coil and the ring contact are stacked and connected in sequence. Except for the raised part, the rest of the two connecting surfaces are all made of polytetrafluoroethylene. Or an insulating ring gasket made of a higher-strength insulating material is supported on a plane. When the contacts are separated, an arc is generated between the two contacts. The arc is distributed on the entire ring surface of the ring contact, so that the current flows along the ring coil for a circle. Then it flows into the ring contacts along the connecting conductor. When the current flows along the ring coil, a large longitudinal magnetic field is generated between the contacts, and the structure is guaranteed not to be squeezed and deformed. The structure is simple and the electrical life of the contacts is longer. , when the arc is pulled inside the coil, the arc is elongated, making it easier to extinguish the arc.

The invention provides a manufacturing process of a MOSFET device, comprising step 1, processing a slot on the side wall of the pin; step 2, welding the pin and the output end of the transistor chip; step 3, welding the transistor chip with the pin Embedding in the shell and fixing it; step 4, inserting the insertion part of the reinforcing rib into the slot of the pin; step 5, using a welding device to weld and fix the reinforcing rib and the pin. It is an object of the present invention to provide a MOSFET device with reduced probability of transistor damage.

The invention provides a shoe press preventing support which comprises an upper support, a lower support and a connecting arm. The upper support is connected with one end of the connecting arm through a rotating shaft, the lower support is connected with the other end of the connecting arm also through a rotating shaft, and sole parts of both the upper support and the lower support are provided with bow-shaped supporting pads. The shoe press preventing support is simple in structure and small in occupied space, can prevent shoes from being easily squeezed and deformed and is convenient to use.

The invention discloses an adjustable installation device and method for a tantalum heater. The installation device comprises a horizontal temporary support table frame, a horizontal bracket, a traveling mechanism, an adjustable support and an installation pattern plate, wherein the horizontal bracket drives the tantalum heater to move on the horizontal temporary support table frame and to be placed in an evaporator, the traveling mechanism is installed at the bottom of the horizontal bracket, the adjustable support is used for supporting tantalum heating tubes of the tantalum heater from front to back, and the installation pattern plate can move back and forth along the tantalum heating tube nest. The installation method includes: 1, installing the heater; 2, aligning the heater; 3, shifting the installation pattern plate; 4, moving the horizontal bracket forward and synchronous installing the tantalum heating tube nest; 5, demounting the supports needing to be detached currently; 6, repeating step 3 to step 5 in multiple mode; and 7, performing following installation. The adjustable installation device is simple in structure and convenient to detach, enables counterpoint adjusting to be convenient, is easy and convenient to operate during usage and good in using effect, and can finish the tantalum heater installation process conveniently and fast, and the tantalum heater is not apt to scratch and deform due to extrusion.

The invention discloses a robot clamp, which relates to the technical field of manipulators. It includes a bracket, a clamp plate under the bracket for clamping a workpiece, an opening and closing mechanism for driving the clamp plate to run, and a support located at the lower end of the clamp plate for supporting the bottom of the workpiece. mechanism, an extraction mechanism located under the bracket for lifting the workpiece up from the worktable and making the support mechanism support the workpiece; the lower end of the splint is provided with a support block, the support mechanism is located on the support block, and the worktable is provided with a support block for Notches to accommodate support blocks. The invention provides a robot fixture, which is not easy to squeeze and deform the workpiece. Good stability.