36results about How to "Avoid frontal impact" patented technology

The invention discloses a suspended aquaculture device capable of moving shellfish for fattening and collecting infant shellfish. The suspended aquaculture device can be freely enlarged or reduced according to the proportion and comprises a square outer framework suspending on the water surface; cross bars are arranged on the outer frame at a distance of 30-40cm; the crossed parts of every two cross bars are firmly bound; iron hooks are respectively hung at the crossed parts; the periphery of the outer frame is firmly connected by tenons, bolts and steel plates; the cross bars are firmly connected with the periphery of the framework by tenons, bolts and steel plates; four corners or frame sides of the breeding device are supported by the buoyancy of closed circular and square floaters; one corner of the suspended aquaculture device is connected with a nylon rope ring with the diameter being 4-5cm; the nylon rope ring is firmly sleeved and tied in a pile column which is vertically and deeply buried at the bottom of a pond or the sea bed; and the nylon rope ring can freely lift along the height of the water level, so that the fatten shellfish hung on the iron hooks moves following the movement of the device. The suspended aquaculture device for collecting infant shellfish and fattening belongs to an environment-friendly and low-carbon type aquaculture device.

The invention relates to the technical field of billboards, and in particular to an adjustable windproof billboard device. The adjustable windproof billboard device comprises a frame (2) which is arranged on a bracket (4), wherein unit plates (1) are arranged on the frame (2) in a hinged mode; and the parts, close to the bottom ends and/or the top ends of the unit plates (1), of the frame are provided with rotating mechanisms (3). According to the billboard which is composed of the plurality of rotary unit plates provided by the invention, rotating angles of the unit plates can be changed in accordance with wind strength, so that wind can run through from a gap between every two unit plates, wind pressure on the unit plates can be reduced, and subsequently, stability of the billboard is enhanced.

The invention discloses a handheld dust sweeping device. The handheld dust sweeping device comprises a handle and a dust collector connected with the handle and is characterized in that a battery is arranged in the handle, a switch is arranged outside the handle, the battery is electrically connected with the dust collector and the switch, the front end of the dust collector is provided with a dust sweeping head, the front side of the dust sweeping head is provided with soft sweeping bristles and dust collection holes, the dust sweeping head is communicated with the dust collector through a connecting rod, and the back of the dust sweeping head is provided with a metal sheet connected with the connecting rod. The handheld dust sweeping device has the advantages that the device can replacea mop and a wipe, dust can be collected during the sweeping of dust on the surface of a vehicle body, the dust flying problem during sweeping is solved, the situation that dust falls to the surface ofthe vehicle body again is avoided, sweeping efficiency is increased, sweeping time is saved, sanitation during sweeping is guaranteed, clothes can be prevented from being dirtied by the dust, fresh air during sweeping can be achieved, damage, caused by the flying dust, to human bodies is avoided, and user health is guaranteed.

The invention belongs to the technical field of concrete production equipment, and provides a sewage treatment device for concrete preparation. The device comprises: a main device body; a water inletpipe, which communicates with the interior of the main device body; a rotating shaft, which is rotationally arranged in the water inlet pipe, wherein an axial flow assembly is fixedly installed on therotating shaft, a dispersing part for spirally dispersing sewage is rotationally arranged on the rotating shaft in a sleeving mode, and the dispersing part is fixedly installed in the water inlet pipe; and a filtering part, which is arranged in the main device body in a leftward-and-rightward sliding manner and is obliquely arranged, a matching groove is fixedly formed in the filtering part, an eccentric wheel for driving the matching groove to swing left and right in a reciprocating mode is fixedly installed at the bottom of the rotating shaft, the eccentric wheel abuts against the interiorof another matching groove in the matching groove, and the filtering part is arranged in the main device body and is elastic in a left-and-right direction in the main device body. The filter part is prevented from being blocked; and meanwhile, sewage is dispersed, and filtering effect is improved.

The invention discloses height limiting equipment for bridge construction. The equipment structurally comprises a supporting column, an intercepting device and a warning lamp, an intercepting plate isclamped at the upper end of the supporting column; the warning lamp is mounted at the bottom end of the intercepting device; the intercepting device comprises a telescopic column, a rotating groove,a rewinding spring and an intercepting plate; the intercepting plate comprises intercepting plate bodies, a rotating shaft, a guide groove, a reflector and a clamping device; the clamping device comprises a spring groove, a reset spring, a clamping rod and a clamping groove; and the spring groove comprises a clamping block, a concave groove and a friction groove. According to the height limiting equipment, the two intercepting plate bodies are movably clamped with the rotating groove such that silt in a truck impacts a height limiting device, the height limiting device can be turned over through the intercepting baffle, the front impact of the silt on the height limiting device is avoided, and the height limiting device is prevented from being damaged.

The invention discloses an air-assisted hydraulic air booster pump for a magnetically levitated train. An air cylinder body assembly and a hydraulic cylinder body are fastened and connected through a connecting cover, wherein a respirator assembly is arranged on the connecting cover, a pneumatic piston and a hydraulic piston assembly are connected through a push rod passing through an inner hole of the connecting cover, the push rod is connected with the hydraulic piston assembly through a push rod seat, a hydraulic piston sealing seat is arranged in the hydraulic piston assembly, and one side, facing the push rod seat, on the hydraulic piston sealing seat is provided with sealing rubber. The technical scheme is adopted, the direction of a rubber sealing surface is changed, the front side impact of high pressure oil on the sealing rubber is avoided, a guide ring is added to the pneumatic piston, and single-edge abrasion of a pneumatic piston rubber ring can be avoided, a support ring is added, the falling and abrasion of a Y-shaped ring can be avoided, and through the improvement on a respirator, the cleanness of an air cylinder assembly is ensured, so that the reliability of a product is improved, and the service life of the product is prolonged.

The invention discloses an explosion-proof structure. The structure comprises a wave reduction assembly and a wave absorbing assembly, wherein the wave reduction assembly can reduce shock waves generated by explosion, the wave absorbing assembly further absorbs the shock waves, the wave reduction assembly comprises a perforated bent plate and a connecting plate which are sequentially distributed along an explosion facing surface, the bent plate has a certain reflection effect and changes the entering angle of the shock waves, and the connecting plate is connected with the bent plate and the wave absorbing assembly to form a wave reduction cavity. After the shock waves enter the wave reduction cavity from different directions, air vortexes are generated in the cavity and counteract one another to a certain extent, energy dissipation of the shock waves is caused, therefore the impact effect on the explosion-proof structure is reduced, the explosion-proof effect of the explosion-proof structure is strengthened, the wave absorbing assembly is of a multi-layer plate-shaped structure and is arranged in the direction deviating from the explosion facing surface, a buffer interlayer absorbsexplosion energy, a supporting layer is a high-strength steel plate, the deformation amount of the explosion-proof structure is reduced, the protection effect is better achieved, and the explosion-proof performance of the explosion-proof structure is further improved.

The invention discloses a multi-angle adjustable solar outdoor liquid crystal display device, comprising at least two upright posts; a pair of annular sliding grooves which are fixedly arranged at theupper ends of at least two upright columns corresponding to each other, the upper end and the lower end of the shell of the elliptical cylinder structure are provided with a pair of circular slidingrings; a pair of annular sliding rings which are slidably connected with the sliding rails in the pair of annular sliding grooves through two sets of sliding blocks; a pair of liquid crystal panels and two groups of solar panels which are alternately arranged on the side walls of the housing; a pair of first wind speed sensors are respectively arranged on the border frames of a pair of liquid crystal screens; A pair of second wind speed sensors which are respectively arranged on two groups of solar panels; a drive assembly which includes an annular rack; a driving motor and a gear; and an MCU.The invention can adjust the display position of a pair of liquid crystal screens according to the real-time wind direction and wind force, so as to prolong the service life of the pair of liquid crystal screens. And the device effectively utilizes the solar energy for supplying power, thereby realizing energy conservation and environment protection.

The invention discloses an on-line fluid viscosity detection device. The device includes an upper electric slip ring, a special line wiring hole, a lower electric slip ring, an on-line viscometer protection cover and an on-line viscometer. Specifically, the on-line viscometer is installed in a stirring mechanism and in the viscometer protection cover preventing material front impact, one end of anelectric wire passing through the special line wiring hole is connected to upper electric slip ring, and the other end is connected to the lower electric slip ring. An on-line viscometer probe in theon-line viscometer is inserted into a viscometer probe protection cavity. Compared with the prior art, the on-line fluid viscosity detection device provided by the invention has the advantages of high detection precision and prevention of the front impact caused by materials to the on-line viscometer.

The invention discloses a material carrying anti-collision device. The material carrying anti-collision device comprises a mounting frame; wherein a first sliding groove is formed in the mounting frame; first sliding blocks are slidably mounted at the two ends of the interior of the first sliding groove; a groove is formed in each first sliding block; a fixing column is arranged in each groove; afirst connecting rod is rotatably mounted on each fixing column; a first hinged column is arranged in the middle of the first connecting rods; a concave block is arranged at the tail end of each firstconnecting rod; a second hinged column is arranged in each concave block; a second connecting rod is hinged to each second hinged column; a third hinged column is arranged in the middle of the secondconnecting rods; the tail end of each second connecting rod is rotatably connected with a fixing seat; a supporting plate is arranged above the mounting frame; a second sliding groove is formed in the lower end of the supporting plate; second sliding blocks are arranged in the second sliding groove; the mounting frame is connected with fixing blocks; and each fixing block is fixedly connected with a first spring. Due to the arrangement of the first springs, the first springs generate elastic force when being squeezed, the first sliding blocks are prevented from moving towards the two outer sides, the supporting plate is buffered accordingly, the impact force from external objects is reduced, and the conveying device is protected.

The invention provides a dust-dirt separation device and a dust collector. An air inlet part is arranged on the side walls, located on the two sides of a filter screen, of a dust collection cavity, and at the position where the air inlet part is connected with the dust collection cavity, the tangent line of at least one part of the air inlet part coincides with the tangent line of the corresponding position of the dust collection cavity. The filter screen moves at a high speed, airflow carrying fine dust enters the dust collection cavity and makes contact with the filter screen rotating at a high speed, and the filter screen applies friction force to dust particles in the airflow, so that the dust particles rotate along with the filter screen. The dust particles move towards the outer edge of the filter screen under the action of rotating centrifugal force, so that the blockage probability of the dust particles to the filter screen is reduced, and the air duct is kept smooth. Dust and dirt particles separated from the filter screen continue to move under the action of negative pressure generated by a centrifugal fan and finally fall to the bottom of the dust collection cavity.

The invention discloses an air-over-hydraulic air boosting pump of a loader. The air boosting pump comprises an air chamber and a hydraulic cylinder. An air piston in the air chamber adopts a diaphragm (4) which is connected with a hydraulic piston assembly (19) in the hydraulic cylinder through a push rod (27). By means of the technical scheme, by improvement of the structure of the air chamber cavity and the diaphragm is adopted to replace an air piston leather collar, air leakage due to abrasion of the prior air piston leather collar after long-time work is prevented, and air leakage cannot be caused even if the dust-proof effect of a respirator is poor, so that the product reliability is improved; the direction of the surface of a rubber seal is changed, front impact of high-pressure oil on the seal rubber is prevented, and accordingly the service life of the product is prolonged; a support ring is added, and a Y-shaped ring can be prevented from falling off and being abraded, so that the product quality is improved.

The invention discloses a suspension flow buffering adjustment device which comprises a hollow body, a cover body and a base. The cover body and the base are integrally or separately formed on the upper side and the lower side of the body. The body is provided with a water inlet and a water outlet. The suspension flow buffering adjustment device further comprises a base and a water control unit, wherein the base comprises a buffering cavity provided with an opening, and at least two water inlet via holes and a water outlet via hole are formed in the wall of the buffering cavity. The two water inlet via holes and the water inlet are arranged in the peripheral direction in a staggered mode. The water control unit is rotatably installed in the buffering cavity through a shaft body and forms a water passing cavity with an opening corresponding to the base, and two flow adjusting holes are formed in the wall of the water passing cavity and correspond to the positions of the two flow adjusting holes. The suspension flow buffering adjustment device is simple in structure and easy to achieve, the defect that the water control unit is unbalanced in stress and is easily stuck in the rotary switching process and the like is effectively overcome. A suspension structure is adopted to minimize operating force and has a flow discharging function, the phenomenon that the body is rust and accordingly flow adjustment cannot be performed can be prevented, and the suspension flow buffering adjustment device is suitable for large-flow adjustment and easily meets the using demand.

The invention discloses a bumper bar system which is designed by adopting novel thinking and used for protecting safety of drivers and passengers in vehicle collision. Impact force applied to left and right rotating pairs are not the same when a single edge of a front side of the vehicle is collided. Collision in the graph occurs on the left side, according to the balanced four connecting rod principle, a left rod pair (2) with big stress moves backward, and a right rod pair (3) with small stress warps upward, so that an included angle between impact directions of a bumper bar (1) and a collision object (22) becomes small, and the collision object (22) can slide along the inclined bumper bar (1) to a lateral side of the vehicle. When the collision occurs on the right side, similarly, the bumper bar (1) warps to the other side, and the collision object (22) slides to the other side of the vehicle. By the warped bumper bar, the vehicle can be protected from front impact by the collision object (22), safety of the drivers and passengers can be effectively protected.

The invention discloses a heat exchanger and a draught fan. At least two heat exchanging flow passages are formed, a corresponding heat exchanging medium flows from the external of the heat exchangerto the corresponding heat exchanging flow passage, the heat exchanger is provided with an incident flow side facing the heat exchanging medium, the incident flow side is provided with an anti-frontalimpact guide part to prevent the heat exchanging medium from frontal impact, and the corresponding heat exchanging medium is introduced into the corresponding heat exchanging flow passage. According to the heat exchanger and the draught fan, the airflow inlet boundary is renovated, unique laws of fluid mechanics and facts reflected by a boundary layer theory are followed, local resistance to a fluid at an incident flow interface can be lowered, separation generated by flow direction normal impact, transverse resistance and vertical resistance formed by the separation are lowered, the requiredthrough-flow flux and the required through-flow rate are obtained by making full use and with the help of the inflow velocity or a fluid transport machine, local resistance caused by the fluid transfer and heat exchanging link and process on the incident flow face is lowered, and finally, the heat exchanging effect of the heat exchanger is improved.

The invention discloses a vehicle impact protection system. The system includes a vehicle frame; the vehicle frame is connected with a buffer device through a bolt, and the rear end of the buffer device is welded on a skeleton of a bumper bar; the front end of the vehicle frame is provided with a collision sensor. When the vehicle frame is collided, the collision sensor sends data to a vehicle-mounted controller, the vehicle-mounted controller judges the acceleration of the vehicle through the collision sensor, if the speed exceeds a threshold, an anti-impact device in the buffer device is started, and the kinetic energy given by the anti-impact device is made use of for reducing the impact on the vehicle; the vehicle-mounted controller starts a safety airbag and an anti-collision cushionchair, and the impact on a cab is then reduced. The anti-impact device includes at least one anti-collision column, the upper end faces of the anti-collision columns are connected with the end face ofthe inner side of the upper portion of the buffer device, and the lower end faces of the anti-collision columns are connected with the end face of the inner side of the lower portion of the buffer device.

The invention discloses a novel marine target radar reflector. A mounting base is included. Reflection mechanisms are fixedly mounted on four side walls and a top of the mounting base; each reflectionmechanism comprises a mounting rod, a connecting plate is fixedly mounted at one end of the mounting rod through welding; four connecting support rods are fixedly mounted at an outer side edge of theconnecting plate through welding; the four connecting supporting rods are connected with the surface of one side of the mounting base, two corner reflectors are hinged to one end, away from the connecting plate, of the mounting rod, the mounting rod is provided with a sliding connecting sleeve, two telescopic cylinders are hinged to the peripheral surface of the sliding connecting sleeve, one endof each telescopic cylinder is telescopically connected with a telescopic inner rod, and one end of each telescopic inner rod is hinged to the corner reflector; and the target can reflect radar signals in an omnibearing mode, shooting accuracy is effectively improved, the corner reflector can avoid straight face impact, a service life of the corner reflector is guaranteed, and therefore cost is reduced.