41results about How to "Avoid local stress" patented technology

The invention relates to a non-contact spray-grinding wheel head of airtight suction air for numerical controlled polishing, belonging to the cold machining technical field in optics. The invention e is to provide solution of a non-contact spraying grinding wheel head of airtight suction air for numerical controlled polishing. The non-contact spray-grinding wheel head comprises a hollow grinding wheel head, a plurality of outlets of the polishing liquid, a connection support and a catch tray of the polishing liquid, an air inlet, a air curtain groove, a hole for liquid suction, a collecting tank and other members, which is characterized in that: the catch tray of the polishing liquid is fixedly connected with the shaft sleeve of the grinding wheel head through the connection support of the catch tray and is sleeved on the hollow grinding wheel head; the first air inlet and the first air curtain groove of the catch tray are communicated with each other; the first air curtain groove is communicated with the interspaces between the hollow grinding wheel head and the catch tray; the second air inlet and the second air curtain groove of the catch tray are communicated with each other; the second air curtain groove is communicated with the lower working surface of the catch tray; the collecting tank is on the lower working surface of the catch tray; the hole for liquid suction on the collecting tank is communicated with the out space of the catch tray; the outlets of the polishing liquid are distributed on the working surface of the hollow grinding wheel head.

A non-contact liquid-spraying grinding head for the numerally controlled polishing is composed of a hollow drive shaft and a hollow grinding head with an internal cavity and several polishing liquid spraying-out holes. Its advantages are high polishing quality.

The invention discloses a vibrating and twisting combined impact speeding-up drill. The vibrating and twisting combined impact speeding-up drill comprises a drill column, a drill bit arranged at one end of the drill column, and a hydraulic passageway arranged in the length direction of a drill column body. The hydraulic passageway comprises an axial hydraulic passageway body and a twisting direction hydraulic passageway body which are sequentially arranged from top to bottom in the overall flowing direction of the hydraulic passageway. The axial hydraulic passageway body is provided with an axial vibration impact system for providing axial vibration for the drill bit, the twisting direction hydraulic passageway body is provided with a twisting direction vibration impact system for providing twisting direction vibration for the drill bit, and the axial vibration impact system and the twisting direction vibration impact system both conduct power transmission through the drill column. The axial vibration impact system and the twisting direction vibration impact system are organically combined into the same drill column, a non-thread type drill bit assembly is clamped to the drill column, and therefore local stress is avoided effectively. Axial vibration impact and twisting direction vibration impact directly act on a drill bit body, and energy attenuation is avoided to the greatest extent.

The invention discloses a filtering device used for processing edible oil and capable of automatically collecting oil residues and relates to the technical field of edible oil processing. The filtering device specifically comprises a processing box, an extrusion mechanism, a smashing mechanism, a filtering mechanism and an oil stain collecting mechanism. The upper surface of the processing box isprovided with a feeding port, the extrusion mechanism is located inside the processing box and comprises a rack, a hydraulic cylinder, a hydraulic rod, a collecting plate, a diverter rod and an extrusion plate. Gate plates are arranged on the left side and the right side of the extrusion mechanism, the smashing mechanism is located on the outer side of the gate plates, the filtering mechanism is positioned below the extrusion mechanism, a supporting inclined frame is welded on the outer side of the processing box, and the oil stain collecting mechanism is positioned below the filtering mechanism. An oil residue filtering structure is arranged in an edible oil processing device so that oil residues can be collected in a centralized manner, and a filter screen has strong flexibility and is convenient to mount and dismount, so that the filter screen is convenient to clean, and the smoothness of the filter screen is favorably maintained.

The invention discloses a staggered stacking structure for heat exchange pipes. The staggered stacking structure comprises an inlet header, an outlet header and the heat exchange pipes, all of which are arranged in an inner cavity of a shell. The inner cavity is filled with phase change materials. The multiple heat exchange pipes are arranged and evenly distributed in the axial direction of the inlet header and the outlet header. By means of the staggered stacking structure, the inlet and outlet direction of the heat charging and heat releasing process is consistent, and local stress caused by contraction or expansion of phase change materials in the heat charging and releasing process is effectively avoided. Meanwhile, the temperature field of a whole phase change energy storage device can be homogenized, the average temperature of transverse sections of different heights in the device is almost consistent, and accordingly the phase change energy storage device can have a better thermodynamic property and more accurate temperature control level.

The invention relates to a clamping tool and a clamping method on the basis of the tool. A clamping device of a large-aperture diffraction grating comprises a mirror frame, a main positioning frame arranged at the side edge of the mirror frame, and four compressing arm sets which are respectively arranged at four corners of the mirror frame; a large-aperture diffraction grating to be clamped is positioned into the mirror frame and stopped on the main positioning plate; the compressing arm sets compress the large-aperture diffraction grating to be clamped to connect with the mirror frame. With the adoption of the clamping device and method for the large-aperture diffraction grating, the installation and debugging are fast, and the precision is high.

The application discloses an electronic device, comprising: a housing having an accommodating space and at least one opening communicated with the accommodating space; a flexible display screen, wherein the first end of the flexible display screen is arranged on the shell, and the second end of the flexible display screen extends into the accommodating space through the opening; a transmission assembly which is arranged in the containing space and comprises a reel and a transmission part, wherein the reel is rotationally connected with the transmission part, and the second end of the flexible display screen is fixed to the reel; when the electronic equipment is switched between the folding state and the unfolding state, the reel rotates, so that the second end of the flexible display screen moves relative to the opening. The display area of the flexible display screen in the outward folding state is increased, local stress generated by the flexible display screen in the outward folding state is avoided, creases are not prone to appearing on the flexible display screen, and the damage rate of the flexible display screen can be reduced.

The invention discloses a robot for cargo handling in a logistics warehouse. The robot comprises a supporting plate, wherein a motor and two vertical columns are arranged on the supporting plate; rectangular grooves are formed in opposite side walls of the two vertical columns; the output end of the motor is connected with a connecting rod; the connecting rod penetrates through the lateral wall of any one of the two vertical columns and is arranged in the corresponding rectangular groove; an upper gear is mounted at the upper ends of the rectangular grooves; two lower gears are mounted at an end part of the connecting rod; the upper gear is connected with the lower gears through a gear belt; two reversely-mounted air cylinders are arranged on the upper wall of a lifting plate; and pushing plates are mounted at the output ends of the air cylinders. In a lifting process, cargo on the lifting plate is raised or lowered at a relatively stable speed, thereby avoiding displacement caused by shaking of the cargo on the lifting plate and improving the cargo lifting safety reliability.

The invention discloses a logistics robot which comprises a guiding aisle and a stacking mechanism, wherein the stacking mechanism comprises a supporting plate placed on a bulge; a plurality of rolling wheels are mounted at the bottom of the supporting plate; a motor and two vertical columns are arranged on the supporting plate; rectangular grooves are formed in opposite side walls of the two vertical columns; the output end of the motor is connected with a connecting rod; the connecting rod penetrates through the lateral wall of any one of the two vertical columns and is arranged in the corresponding rectangular groove; an upper gear is mounted at the upper ends of the rectangular grooves; two lower gears are mounted at an end part of the connecting rod; the upper gear is connected with the lower gears through a gear belt; two reversely-mounted air cylinders are arranged on the upper wall of a lifting plate; pushing plates are mounted at the output ends of the air cylinders; and travel switches are electrically connected with the motor through a controller. In a lifting process, cargo on the lifting plate is raised or lowered at a relatively stable speed, thereby avoiding displacement caused by shaking of the cargo on the lifting plate and improving the cargo lifting safety reliability.

The invention provides a two-roll continuous mill for wires, which is capable of finishing diameter reduction for the wires in one working procedure, thus reducing working procedure, and then reducing the consumption of fuels, electric energy, auxiliary materials, manpower and the like, and increasing production efficiency. The two-roll continuous mill for the wires comprises a mill rack, a wire inlet, a wire outlet, as well as a lubricating and cooling water inlet tube and a lubricating and cooling water return tube of a single cold-rolling machine, wherein the single cold-rolling machine comprises a transversal cold-rolling machine and a vertical cold-rolling machine, and the transversal cold-rolling machine and the vertical cold-rolling machine are alternately arranged on the mill rack. The two-roll continuous mill for the wires is characterized in that the single cold-rolling machine is driven by an independent rolling motor and a rolling input gearbox.

The invention provides a modular connection joint of a steel structure. The modular connection joint comprises a first joint, a second joint and a connection block, wherein a positioning post is arranged on the end surface of the first joint, a first connecting groove is formed in the face, adjacent to the end face, of the first joint, the end face of the second joint is provided with a positioning hole, and a second connecting groove is formed in the face, adjacent to the end face, of the second joint, the positioning post corresponds to the positioning hole, the first connecting groove corresponds to the second connecting groove in position, and the first connecting groove and the second connecting groove are connected through the connection block. The radial fixation between the first joint and the second joint is achieved through cooperation of the positioning post and the positioning hole, and axial fixation is achieved through the connection block so that the first joint and thesecond joint can bear radial stress and also bear an axial force, a fixing way is simple, large-batch modular production can be achieved, modular assembly can also be achieved, and the assembly efficiency is improved.

A shampoo / conditioner that repels lice and aids in the removal of head lice and nits is presented. It is a formulation comprising at least one homeopathic louse insecticide included with acetic acid in association with a gentle wetting agent and shampoo and conditioner and softener components, all tested for low dermal irritation with a final pH below 4.5 and a viscosity of 1200 to 2000 CPS. The product reduces or eliminates the activity of live lice and makes it significantly easier to comb out nits. The product creates an environment repulsive to head lice thereby acting to prevent re-infestation. It is suited for the daily use that is necessary to insure permanent removal of all lice and nits by combing and serves to beautify the hair.

An embodiment of the invention provides a double-layer train carriage. The carriage comprises a roof, a bottom frame and a carriage space defined by side wall structures, wherein the carriage space isdivided into an upper carriage and a lower carriage by floor structures; each side wall structure comprises a roof connecting section for primary fixed connection, a load bearing section and a bottomframe linking section; each load bearing section comprises a switching structure for mounting and fixing the floor structure of the upper carriage. According to the technical scheme, adjustment transition is performed by the switching structure, the problem of fit tolerance accumulation caused in the side wall mounting process is solved, so that the floor structures of the two carriages can be fixedly connected with side walls smoothly, and meanwhile, local effects of local stress problems or welding processes in the direction connection process of the floor structures and the side walls on strength of the side walls are avoided.

The invention discloses a book block flattening machine. The book block flattening machine comprises a rack, a rotary table rotationally installed on the rack, a hydraulic cylinder fixedly connected with the rotary table, a pressing assembly rotationally installed at the output end of the hydraulic cylinder and an adjusting assembly driving the rotary table to rotate, wherein the output end of thehydraulic cylinder is arranged downwards; the pressing assembly comprises a pressing plate horizontally and rotationally installed at the output end of the hydraulic cylinder, pressure equalizing rods evenly arranged on the hydraulic cylinder and pressing wheels installed on the pressure equalizing rods at intervals along the axes of the pressure equalizing rods, wherein the pressing wheels abutagainst the pressing plate; and each pressing wheel comprises a U-shaped mounting plate, a roller rotationally installed in the mounting plate and a supporting shaft vertically and fixedly connected with the outer wall of the bent position of the mounting plate, and a corresponding mounting hole is formed in the side, facing the pressing plate, of each pressure equalizing rod. According to the book block flattening machine, stress can be more uniform in the book block flattening process, and the flattening effect is improved.

The invention discloses a semitrailer shipment detection device. The semitrailer loading detection device comprises a car hopper, the car hopper comprises a bearing plate, a supporting assembly is arranged on the lower part of the bearing plate, the bearing plate is fixedly connected with the supporting assembly, the supporting assembly comprises transverse beams and longitudinal beams, the transverse beams and the longitudinal beams are set at 90 degrees, and the transverse beams and the longitudinal beams are all fixedly connected with the lower surface of the bearing plate; and protective plates are connected to the two sides of the bearing plate in a hinged mode, detection assemblies are arranged between the transverse beams and the longitudinal beams, display plates are arranged abovethe detection assemblies, limiting grooves are formed in the protective plates, and the display plates are slidably connected with the limiting grooves. The semitrailer shipment detection device is used for solving the problems one side of a semitrailer bears extremely high pressure and the probability of occurrence of danger further increases dramatically due to the fact that a weight differencebetween the left and right sides on the bearing plate provided in the background technology is too large.

The invention discloses a bridge reinforcing device and belongs to the technical field of bridges, the bridge comprises a top plate, a bottom plate and a plurality of box girders supported between the top plate and the bottom plate, and the box girders are arranged in the transverse direction of the bridge. The reinforcing device comprises a box girder flange plate supporting plate, a supporting clamping plate, a plurality of first box girder web tightening rods and a plurality of second box girder web tightening rods, reinforcing layers are arranged on the inner sides of the box girders in a cast-in-place mode, and the two ends of the first box girder web tightening rods and the two ends of the second box girder web tightening rods are fixedly connected with the reinforcing layers of the two adjacent box girders. The first box girder web tightening rod and the second box girder web tightening rod are located in two planes with different heights respectively, and the first box girder web tightening rod and the second box girder web tightening rod are staggered in the vertical direction. The device can be used for repairing and reinforcing the bridge, larger potential safety hazards are avoided, traffic pressure is relieved, and the service life of the bridge is prolonged.

The invention discloses a book block flattening machine. The book block flattening machine comprises a rack, a rotary table rotationally installed on the rack, a hydraulic cylinder fixedly connected with the rotary table, a pressing assembly rotationally installed at the output end of the hydraulic cylinder and an adjusting assembly driving the rotary table to rotate, wherein the output end of thehydraulic cylinder is arranged downwards; the pressing assembly comprises a pressing plate horizontally and rotationally installed at the output end of the hydraulic cylinder, pressure equalizing rods evenly arranged on the hydraulic cylinder and pressing wheels installed on the pressure equalizing rods at intervals along the axes of the pressure equalizing rods, wherein the pressing wheels abutagainst the pressing plate; and each pressing wheel comprises a U-shaped mounting plate, a roller rotationally installed in the mounting plate and a supporting shaft vertically and fixedly connected with the outer wall of the bent position of the mounting plate, and a corresponding mounting hole is formed in the side, facing the pressing plate, of each pressure equalizing rod. According to the book block flattening machine, stress can be more uniform in the book block flattening process, and the flattening effect is improved.

A segmented protection device for a drill pipe comprises: a cylindrical body (1), wherein multiple annular grooves are arranged on the cylindrical body (1), the annular grooves divide the cylindrical body (1) into multiple rigid portions, and flexible portions (2) are arranged in the annular grooves; the flexible portion (2), comprising a leather layer (4), wherein multiple fixed rings (15) are arranged on both a top portion and a bottom portion of the leather layer (4); multiple bolts (16) and nuts (17) matching the bolts (16); an annular filling chamber, wherein the annular filling chamber is filled with multiple first balls (5) and multiple second balls (6), and the diameter of the first ball (5) is 8 to 15 times the diameter of the second ball (6); and multiple protection mechanisms (3), wherein at least one bolt (16) and at least one nut (17) are disposed in the protection mechanisms (3). The compressive strength at different points of the cylindrical body (1) is different, and the addition of the lower-cost flexible portion (2) not only reduces production costs of the cylindrical body (1), but also facilitates transportation and storage steps of the cylindrical body (1). The cylindrical body (1) can be adapted for a variety of soil environments, thereby improving the universality of a protective sleeve.

The utility model relates to a non-contact liquid-jet grinding head for gas-sealed liquid pumping for numerical control polishing, which belongs to the liquid-jet grinding head involved in the technical field of optical cold processing. The technical problem to be solved is to provide a non-contact liquid jet grinding head for gas-sealed liquid pumping for numerical control polishing. The technical solutions to be solved include hollow grinding head, polishing liquid outlet hole, collecting plate connecting frame, polishing liquid collecting plate, air inlet hole, air curtain groove, liquid pumping hole, liquid collecting tank, etc.; the polishing liquid collecting plate connects with the collecting plate connecting frame The shaft sleeve of the grinding head is fixedly connected and set on the hollow grinding head; the first air inlet hole of the polishing liquid collecting plate communicates with the first air curtain groove, and the first air curtain groove communicates with the gap between the hollow grinding head and the polishing liquid collecting plate; The second air inlet hole of the polishing liquid collecting plate communicates with the second air curtain groove, and the second air curtain groove communicates with the lower working surface of the polishing liquid collecting plate; The liquid pumping hole communicates with the space outside the polishing liquid collection plate; the polishing liquid outlet holes are distributed on the working surface of the hollow grinding head.

The invention provides a treating and repairing method for antique calligraphy and painting folds. Physical means and chemical means are matched to eliminate the folds. The method includes the first step of carrying out deacidifying treatment on centers of the antique calligraphy and paintings needing to be repaired; the second step of additionally attaching snake-shaped strips to disconnected folds with centers which are deacidified and cleaned, wherein in the deacidifying treatment step, magnesium bicarbonate solutions are uniformly sprayed to the centers and remain at the surfaces of the centers for 5-15 minutes, and the centers are cleaned for standby application. The method further includes the third step of restoring the centers through heating stress and additionally attaching the snake-shaped strips; the fourth step of smoothening and attaching the centers and arranging the centers on silk materials. Due to the fact that the centers of the antique calligraphy and paintings are acid after being oxidized and corroded in air for a long time, acid accumulation occurs, original natures of center paper are changed, the folds are continuously produced, the deacidifying treatment is carried out on the centers, internal factors are solved from the perspective of the centers, heat reduction and silk material covering for strengthening are matched, the folds can be eliminated fundamentally, time is saved, and repair efficiency is high.

The invention belongs to the technical field of material performance testing, and discloses a rapid clamp suitable for a closed environment. The rapid clamp comprises two symmetrically arranged clampassemblies, and each clamp assembly comprises a mounting platform and a pressing mechanism; the mounting platform comprises a platform body, a slideway baffle plate and a limiting baffle plate; and the pressing mechanism comprises a pressing handle, a limiting sliding block and a sample pressing block. The rapid clamp is easy and convenient to operate, a sample can be automatically clamped througha mechanical arm, manual operation in an extreme environment is avoided, contact of harmful substances is reduced, and personal safety is effectively guaranteed; because the sample can be compressedafter a test condition is applied, a local stress generated by fixing the sample in advance can be avoided, and the accuracy of test data is guaranteed; and meanwhile, centering performance is good, atest process is safe and a result is reliable.

The invention relates to a coupling body (26) that can convert a linear input movement into a linear output movement transversal to the input movement. Said coupling body comprises two parallel flexional arms (28, 30) of the same length, the ends of said flexional arms being connected by means of transversal connection arms (32, 34). The connection arms (28, 30) carry driving bodies (40, 42) which represent load bodies arranged at the same distance from the neutral lines of the connection arms, in the same direction.

The invention relates to a modularly assembled copper alloy tension net cage and an assembly method thereof, comprising a vertically stressed high-strength polyester fiber ribbon, a main skeleton ribbon standard part and a horizontally secondary stressed high-strength polyester fiber ribbon The standard part of the sub-skeleton webbing is fixed at the intersection point of the cross to form a grid-shaped single-side cage box webbing skeleton with flexibility and elasticity; in each frame of the single-side cage box webbing skeleton, Through the assembly of pre-installed quick connectors and prefabricated copper alloy tensile mesh standard modules, a modular assembled net cage box side net is formed; both sides of the unilateral side net are connected by quick connectors or several sheets The side and side nets are equipped with corner flexible transfer standard parts and assembled with the bottom net to form a copper alloy tensile net cage body. The invention can be modularized and standardized for production, and is convenient for rapid installation at sea, and has the performance of well maintaining the marine culture net cages against marine fouling organisms, and maintaining good water exchange inside and outside the net cages.

The invention discloses a segmented protection device for a drill pipe. The segmented protection device comprises a cylinder body, the cylinder body is provided with a plurality of annular grooves, the cylinder body is divided into a plurality of rigid parts by the annular grooves, and the annular grooves are internally provided with flexible parts; the flexible parts include leather layers, and aplurality of fixing rings are disposed at the tops and the bottoms of the leather layers. The segmented protection device further includes a plurality of bolts and nuts matched with the bolts, an annular filling chamber is filled with a plurality of first spheres and a plurality of second spheres, the diameter of the first spheres is 8-15 times the diameter of the second spheres. The segmented protection device further includes a plurality of protection mechanisms, and the protection mechanisms are internally provided with at least one bolt and at least one nut. The compressive strength at different positions of the cylinder body is different, by additionally arranging the flexible parts with lower cost, the production cost of the cylinder body is reduced, the transportation and storage steps of the cylinder body are further easier, the cylinder body has the ability to adapt to a variety of soil environments, and the universality of a protective sleeve is improved.

The invention provides a PVC pipe tail head device, including a pipe body and a tail end head, the tail end head is installed at the tail of the pipe body, and the tail end head includes a pressure dividing ring outside the pipe, an annular slot, and a sealing ring pad The inner wall of the pressure dividing ring outside the pipe is socketed with the outer surface of the pipe body, and the surface of the pressure dividing ring outside the pipe is inserted into the inner wall of the annular slot, which relates to the field of PVC pipes. The plugging structure designed by the PVC pipe tail head device can act on the inside and outside of the pipeline at the same time, and the impact of water flow can be used to enhance the sealing effect and the tightness of the connection. The multi-stage partial pressure weakens the impact of the structure and prolongs the service life. The structure can be quickly disassembled in a simple way, which effectively solves the problem that the general head needs to bear a large impact force when it is used, the force-bearing part has poor ability to disperse pressure, and is prone to leakage. The damage has a great impact on the pipeline, and it is inconvenient to repackage.

The invention discloses a chip packaging connector assembly, which comprises a connecting head mounting plate, a wire harness pressing plate, a connecting head, a connecting seat, pins and a dustproof board. In the present invention, a wire harness pressure plate is arranged at the wire harness, the wire harness is bent and the connector mounting plate is fixed through the wire harness guide groove, and the wire harness and the bottom end of the substrate are fixed through the wire harness pressure groove, so as to prevent local stress on the fixed part of the wire harness and the connector mounting plate , causing the circuit to be disconnected, and at the same time it is convenient to bundle the wire harness, and a damper installation groove is set inside the connection seat, and a damper is arranged inside the damper installation groove, and the connector and the connection seat are snapped and fixed so that the dustproof board can be separated from the dustproof board installation groove Stretch out and fix, the inner spring of the damper is compressed, the connecting head is separated from the connecting seat, the inner spring of the damper stretches, drives the dust-proof plate to retract into the installation groove of the dust-proof plate, and makes the connecting head pop out from the connecting seat.

The invention discloses an intelligent robot used for goods stacking. The intelligent robot comprises a guide gangway and a stacking mechanism; the stacking mechanism comprises a supporting plate arranged on a bulge; a plurality of rollers are mounted on the bottom of the supporting plate; a motor and two stand columns are arranged on the supporting plate; rectangular slots are formed in opposite side walls of the two stand columns; the output end of the motor is connected with a connecting rod; the connecting rod penetrates through the side wall of any one of the two stand columns, and is arranged in the rectangular slots; an upper gear is mounted at the upper ends of the rectangular slots; two lower gears are mounted on the end part of the connecting rod; the upper gear is connected with the lower gears through toothed belts; two air cylinders which are reversely mounted are arranged on the upper wall of a lifting plate; pushing plates are mounted on the output ends of the air cylinders; and a travel switch is electrically connected with the motor through a controller. In a lifting process, goods on the lifting plate ascend or descend at relatively stable speed, so that the goods are prevented from shifting as a result of shaking on the lifting plate, and therefore, goods lifting safety reliability is improved.

The invention discloses a semitrailer shipment detection device. The semitrailer loading detection device comprises a car hopper, the car hopper comprises a bearing plate, a supporting assembly is arranged on the lower part of the bearing plate, the bearing plate is fixedly connected with the supporting assembly, the supporting assembly comprises transverse beams and longitudinal beams, the transverse beams and the longitudinal beams are set at 90 degrees, and the transverse beams and the longitudinal beams are all fixedly connected with the lower surface of the bearing plate; and protective plates are connected to the two sides of the bearing plate in a hinged mode, detection assemblies are arranged between the transverse beams and the longitudinal beams, display plates are arranged abovethe detection assemblies, limiting grooves are formed in the protective plates, and the display plates are slidably connected with the limiting grooves. The semitrailer shipment detection device is used for solving the problems one side of a semitrailer bears extremely high pressure and the probability of occurrence of danger further increases dramatically due to the fact that a weight differencebetween the left and right sides on the bearing plate provided in the background technology is too large.