21results about How to "Avoid violent impact" patented technology

The invention provides a high-altitude vertical face operation mechanism. The high-altitude vertical face operation mechanism comprises a long rod, an execution piece arranged at one end of the long rod, an adjusting assembly arranged in the middle of the long rod, an electric control box arranged at the other end of the long rod and a self-adaptive section connected between the long rod and the execution piece. The execution part is used for performing contact operation on a high-altitude vertical face; the self-adaptive section can be passively deformed so as to buffer the stress at the moment when the execution piece is in contact with the high-altitude vertical face, and the pose of the execution piece relative to the long rod can be changed, so that the execution piece is at an angle adaptive to the high-altitude vertical face; the self-adaptive section is arranged between the long rod and the execution piece, so that the high-altitude vertical face operation mechanism is in flexible contact with the high-altitude vertical face, violent collision between the high-altitude operation device and the high-altitude vertical face is effectively avoided, the high-altitude operation device can operate stably, and the flexible deformation of the flexible side wall is achieved. And the execution piece can adaptively change the pose relative to the long rod.

The invention relates to the technical field of buffering oil cylinders, and discloses a buffering oil cylinder with high buffering performance and a working method of the buffering oil cylinder. A one-way valve is movably connected to a buffering plunger through a spring, a rod cavity and a rodless cavity are each provided with two connecting cavities, and one connecting cavity communicates with the one-way valve through a buffering hole; when the piston is about to move to the end of the rod cavity of the cylinder body, hydraulic oil pushes the one-way valve to compress the spring, the communication position of the rod cavity and the buffer plunger is closed, a closed space is formed between the piston and the cylinder body, and due to the incompressible characteristic of liquid, the pressure changes sharply, so that the piston is prevented from falling off. Therefore, the buffering effect is achieved, high-pressure impact can be avoided, and the hydraulic system can operate more stably and efficiently while the buffering effect is guaranteed.

The invention belongs to the technical field of building detection, and particularly relates to unmanned aerial vehicle mounting-based engineering building intelligent detection equipment, which comprises a mounting plate, a connecting frame and the like, and a connecting frame is mounted on the mounting plate. According to the device, personnel in a building are informed of detection operation through information on two indication boards, buffering is performed through two spring rods, violent collision when two rotating rollers make contact with a wall is avoided, water stains on the surface of the wall are adsorbed through rotation of a water absorption piece, and the detection efficiency is improved. According to the wall crack detection device, the scrapers rotate to scrape wall skins falling off from the surface of a wall, meanwhile, the scraped wall skins adhere to the film, and the infrared camera is started to detect cracks of the wall, so that the cracks of the wall are detected, the shooting quality of the infrared camera and the accuracy of crack recognition are improved, and the detection efficiency is improved. And the fallen wall skin is guided through the top plate, so that the fallen wall skin flows into the collecting bag, and the safety of the detection operation is effectively improved.

The utility model discloses a crash pad structure at the two ends of a track of an aluminum alloy sliding door, which comprises the crash pad structure arranged at the two ends of the track of the aluminum alloy sliding door, the crash pad structure comprises a supporting strip and a crash pad main body, and the surfaces of the two sides of the track of the aluminum alloy sliding door are respectively provided with a strip-shaped hole for the supporting strip to insert. The two ends of the supporting strip are inserted into the strip-shaped holes in the two sides of the supporting strip respectively, a clamping and positioning structure is arranged between the supporting strip and the aluminum alloy sliding door track, and the cushion pad body is installed on the surface of one side of the supporting strip. The buffering cushion structures are designed at the two ends of the rail of the aluminum alloy sliding door, so that an effective buffering effect can be achieved when the aluminum alloy sliding door is excessively pushed and pulled, violent collision is prevented, the service life of the whole aluminum alloy sliding door and the rail of the aluminum alloy sliding door is prolonged, and the service life of the aluminum alloy sliding door is prolonged. Meanwhile, the buffering cushion structure has the advantage of being convenient to disassemble, assemble and maintain in the later period, and rapid replacement during follow-up damage is facilitated.

This invention discloses a testing device and method for tensile deformation of fiber-reinforced cementitious materials, belonging to the field of engineering material testing technology. The testing device mainly includes three parts: a support frame, a lever system, and a specimen mounting system. The main steps of the testing method include: lifting the lever to unload; installing the specimen mounting system, slowly releasing the lever and finely adjusting the position of the tensile specimen to reduce eccentricity and achieve preloading; repeatedly lifting and unloading the lever, and finely adjusting the centering tensile clamp and the tensile specimen; installing the displacement sensor and zeroing it in the unloaded state; adjusting the weight of the lever according to the real-time display value of the force sensor to complete the suspension and precise loading of the tensile specimen. This method applies tensile force to the cement-based composite material through the lever mechanism and performs arbitrary crack propagation evaluation based on the micro-cracks in the cement-based material using digital image processing, which can quantitatively characterize the creep deformation and crack propagation process of cement-based composite materials under continuous tensile load.

The utility model relates to an alkaline battery quality inspection device, which comprises a universal meter main body, an electrifying sheet and a bearing platform for placing a battery, a screw rod is horizontally arranged at one end of the bearing platform in a penetrating manner, the screw rod is in threaded connection with the bearing platform, a connecting plate is rotatably arranged at one end of the screw rod in the bearing platform, and the connecting plate is in threaded connection with the universal meter main body. Two placement blocks are arranged in the bearing table, one placement block is fixed to one side of the inner wall of the bearing table, two springs are arranged between the other placement block and the connecting plate, and the two ends of each spring are connected with one side of the connecting plate and one side of the corresponding placement block respectively. The utility model relates to the technical field of battery detection equipment. According to the utility model, through the elastic deformation of the spring, the redundant movement length of the placing block is eliminated in a disguised manner, so that the strong impact between the electrifying sheet and one end of the battery is avoided, the damage between the electrifying sheet and one end of the battery is avoided, and the service life of the quality inspection device is prolonged.

The utility model discloses an electric shovel bucket opening and closing hydraulic damping device, a working device and an electric shovel. The electric shovel bucket opening and closing hydraulic damping device comprises a hydraulic cylinder, a first throttling valve, a switching valve, a one-way valve, a speed regulating valve and an energy accumulator. The hydraulic cylinder comprises a hydraulic cylinder barrel and a hydraulic cylinder piston rod; the throttle valve I is connected with a rodless cavity and a rod cavity of the hydraulic cylinder through a pipeline; the switching valve and the one-way valve are connected in series and then connected with the first throttling valve in parallel through a pipeline. The speed regulating valve is connected with a rodless cavity of the hydraulic cylinder and a control port of the switch valve through a pipeline; and the energy accumulator is connected with a rod cavity of the hydraulic cylinder through a pipeline. Opening and closing buffering of the electric shovel bucket door can be achieved through the hydraulic device, noise and impact are reduced, regular adjustment is not needed in the using process, the downtime is shortened, and the operation efficiency of an electric shovel is improved.

The invention relates to the technical field of electric power construction, in particular to electric power facility safety protection equipment for an electric power construction site and a use method thereof. Comprising an insulating cover, a hollow cylinder, an air bag, an air pipe, an iron plate, a compression spring, an iron block and the like, the hollow cylinder is installed on the insulating cover, a vent hole I is formed in the hollow cylinder, the air bag is arranged on the inner side of the insulating cover, the two ends of the air pipe are communicated with the hollow cylinder and the air bag respectively, the iron plate is slidably arranged in the hollow cylinder, and the two ends of the compression spring are connected into the iron plate and the hollow cylinder respectively. The iron block is rotationally installed on the hollow cylinder, a vent hole II is formed in the iron block, and the vent hole II is communicated with the vent hole I. Through cooperation of the hollow cylinder, the air bag, the air pipe and the iron plate, the air bag can be expanded, so that the air bag is tightly attached to the insulator through expansion, the insulation cover is limited, the stability of the insulation cover is improved, and the insulation cover is prevented from deviating or falling off when affected by external factors.

The utility model discloses a piano cover closing buffer structure which comprises a piano main body, a piano cover is rotatably connected to the piano main body, sliding cylinders are connected to the two sides of the piano main body respectively, sliding rods are slidably connected in the sliding cylinders in a sleeved mode, air channels are formed in the bottom ends of the sliding cylinders, studs are connected to the sliding cylinders in a threaded mode, and the studs are connected to the piano main body in a sleeved mode. According to the piano cover closing buffer structure, when the piano cover is pushed to be closed, the swing rod pushes the sliding rod to slide towards the interior of the sliding cylinder, air in the sliding cylinder is slowly exhausted from the air channel, and therefore the piano cover is slowly rotated to be closed under the gravity, and the piano cover is not prone to falling off. And when the closing speed of the piano cover is still too high, the stud is rotated by a screwdriver, so that the smaller air hole is communicated with the air passage, the air flow is reduced, and the purpose of controlling the closing speed is achieved.

The utility model relates to the technical field of motorcycle anti-falling bars, in particular to a motorcycle anti-falling bar which comprises an installation frame, an installation mechanism is arranged on the surface of the installation frame, second movable sleeves are welded to the two sides of the installation frame, and the surfaces of the second movable sleeves are communicated with second installation bases. A second positioning bolt is arranged on the side, away from the second movable sleeve, of the second mounting base in a penetrating mode. A second positioning bolt is screwed out of a second bolt hole by rotating the second positioning bolt, then the mounting frame is rotated to drive a first movable sleeve, a fixed sleeve, a threaded sleeve, a threaded rod and a mounting plate to rotate, the angle of the mounting frame is adjusted, and when falling occurs, a buffering head is in contact with the ground firstly, and the buffering head is in contact with the ground; the buffering head pushes the buffering rod to move in the supporting cylinder, the buffering rod drives the spring to do telescopic motion for buffering, hard contact between the motorcycle and the ground is prevented, and violent collision between the motorcycle and the ground is prevented.

The utility model discloses an emergency unlocking device for an automobile door, and relates to the technical field of emergency unlocking of automobile doors. Comprising a door lock impact buckle piston cylinder barrel, a connecting rod is arranged on the upper wall face of the door lock impact buckle piston cylinder barrel, an emergency unlocking handle is hinged to the connecting rod, an open groove is formed in the emergency unlocking handle, and a locking piston cylinder barrel is arranged on the upper wall face of the door lock impact buckle piston cylinder barrel. A locking piston bolt column is inserted into the upper wall face of the locking piston cylinder barrel in a sliding mode, and the upper end of the locking piston bolt column is installed in the open groove in a sliding mode. The emergency vehicle door unlocking structure is stable in performance, safe and efficient in design, high-strength stainless steel double springs and double pistons are adopted for clamping and pressing, the situation that a vehicle door is opened by mistake due to violent collision, collision, rolling and bumping of a vehicle is effectively prevented, and the emergency vehicle door unlocking structure adapts to an extreme environment and resists limiting temperature; the emergency unlocking handle adopts a lever working principle, is simple to operate and is suitable for children and old people.

The utility model relates to the technical field of suspended sludge scrapers, and discloses a sludge discharge device for sewage treatment, which comprises a bracket, a plurality of sludge scraping plates connected to the bottom of the bracket and connecting rods connected between the bracket and the sludge scraping plates, the connecting sleeve is arranged on the connecting rod, the moving block and the pressure spring are arranged in the connecting sleeve, and the mud scraping plate can move up and down through mutual matching of the moving block and the pressure spring, so that the phenomenon that the mud scraping plate violently collides with a hard block-shaped foreign matter or is clamped is avoided, the mud scraping plate can be effectively protected from being damaged, and the mud scraping plate is prevented from being damaged. According to the sludge discharging device, the adaptability of the sludge scraping plate to different foreign matters is improved, the service life of the whole sludge discharging device is prolonged, the whole sludge discharging device can still keep a normal operation state under such special conditions, and the continuity and the stability of the whole sewage treatment process are not influenced by the existence of individual foreign matters.

The invention discloses a rotor flat square selecting mechanism which comprises a rack and a positioning table, the rack is provided with a flat square positioning sleeve and a driving source, the driving source drives the flat square positioning sleeve to rotate, the driving source is provided with a directional detection piece, the flat square positioning sleeve is provided with a first sensing part used for being matched with the directional detection piece, and the positioning table is provided with a second sensing part used for being matched with the directional detection piece. After a rotor is placed on the positioning table, the end of the rotor is pushed into the flat square positioning sleeve through the feeding assembly, then the flat square positioning sleeve is driven by the driving source to rotate so as to drive the rotor to rotate to adjust the circumferential angle, when the orientation detection piece detects the first induction part, it is represented that the flat orientation on the rotor is adjusted in place, and automatic adjustment of the flat orientation is achieved; compared with manual visual adjustment, the device has better consistency and accuracy, is high in overall efficiency, and can be better combined with an automatic production line for use.

The utility model provides an axle shaft sleeve placing frame which comprises a bottom frame, first stand columns are fixedly connected to the four corners of the bottom frame respectively, and inclined rods are fixedly connected between the two ends of a pair of upper walls of the bottom frame and the upper ends of the adjacent first stand columns respectively. The pair of upper walls, connected with the inclined rods, of the bottom frame is further fixedly connected with an inverted-V-shaped rod located in the middle of the bottom frame, the inverted-V-shaped rod comprises a pair of supporting arms close to the inclined rods on the two sides respectively, an angle alpha is formed between each supporting arm and the bottom frame, an angle beta is formed between each inclined rod and the bottom frame, and the degree of the angle alpha is larger than that of the angle beta. According to the utility model, the problem that the axle shaft sleeve is easily damaged due to collision caused by the shaking of the placing rack in the prior art is solved.

The present invention belongs to the field of building detection technology, and specifically relates to an intelligent detection device for engineering buildings based on drone mounting, including a mounting plate and a connecting frame, etc.; the connecting frame is installed on the mounting plate. The present invention realizes informing the personnel in the building that the detection operation is being carried out through the information on two signboards, and buffering through two spring rods to avoid violent collision when the two rotating rollers contact the wall, and then the water stains on the wall surface are absorbed by the water absorbent, and the wall skin that falls off the wall surface is scraped by the scraper, and the shoveled wall skin is adhered by the film, and then the cracks of the wall are detected by starting the operation of the infrared camera, thereby realizing the detection of the cracks of the wall, and improving the shooting quality of the infrared camera and the accuracy of crack recognition, and guiding the fallen wall skin through the top plate so that the fallen wall skin flows into the collection bag, thereby effectively improving the safety of the detection operation.

The present invention relates to the technical field of buffer oil cylinders, and discloses a buffer oil cylinder with high buffer performance and a working method thereof, wherein a one-way valve is movably connected to a buffer plunger through a spring, and a rod chamber and a rodless chamber are respectively provided with two connecting chambers, one connecting chamber is connected to the one-way valve through a buffer hole, and the other connecting chamber is connected to the buffer plunger through a drainage hole. When the piston is about to move to the end of the rod chamber of a cylinder body, the hydraulic oil pushes the one-way valve to compress the spring, and closes the connection between the rod chamber and the buffer plunger, so that a closed space is formed between the piston and the cylinder body. Due to the incompressible property of the liquid, the pressure changes sharply, thereby achieving a buffer effect, which not only helps to avoid high-pressure shocks, but also allows the hydraulic system to operate more stably and efficiently while ensuring the buffer effect.

The utility model discloses a powder packaging tamper which comprises an outer barrel, a tamping barrel is arranged in the outer barrel, a bottom spring is fixed to the bottom of the outer barrel, a tray is fixedly connected to the top end of the bottom spring, the tamping barrel is placed on the surface of the tray, and a buffering assembly is arranged between the inner wall of the outer barrel and the outer side of the tamping barrel. The buffer assembly comprises a fixed cylinder, a telescopic rod, a connecting cover and a rubber ball A. The fixed cylinder is fixed to the inner wall of the outer cylinder, and the telescopic rod is telescopically connected to the interior of the fixed cylinder. Through a bottom spring, a tray and a buffering assembly which are designed, vibration of the tamping cylinder in all directions can be buffered, violent impact between the tamping cylinder and external parts in the vibrating process is avoided, meanwhile, the good limiting effect on vibration of the tamping cylinder can be achieved, the tamping cylinder is prevented from inclining or even toppling over in the vibrating process, and the service life of the tamping cylinder is prolonged. And normal use of the tamper is facilitated.

The present invention provides a feeding device for steel ball production and processing. It relates to the technical field of steel ball production. The feeding device for steel ball production and processing comprises: a support table, a back-side load-bearing plate is fixedly installed on the top of the support table, a first mounting plate is fixedly installed on the top of the back-side load-bearing plate, a standing plate is fixedly installed on the top of the first mounting plate, two transmission rollers are rotatably installed on the standing plate, the two transmission rollers are provided with the same belt cover, a plurality of rubber interlayers are fixedly installed on the outer surface of the belt cover, and two rubber side baffles are fixedly installed on the outer surface of the belt cover, and the plurality of rubber interlayers are all located in the two rubber side baffles, a female guide sleeve is provided below one side of the belt cover, and a sub-guide sleeve is provided at the bottom of the female guide sleeve. The present invention can make the steel balls discharge smoothly, and has the advantage of reducing the defective rate.

The present invention provides a mechanically locked two-stage hydraulic cylinder, wherein a first piston rod is slidably mounted in a first cylinder body, and a second piston rod is slidably mounted in the first piston rod, and a first oil port and a second oil port are respectively provided near the two ends of the first cylinder body; a first central oil passage connecting the end face and the inner cavity of the first piston rod is provided at the end of the first piston rod away from the second piston rod, and a third oil passage is provided at the end of the second piston rod close to the free end, and the third oil passage is connected to the inner cavity of the first piston rod through the second central oil passage and the side wall oil passage; a first locking device is provided between the second piston rod and the first cylinder body; and a second locking device is provided between the first piston rod and the second piston rod. By adopting the above structure, the oil inlet mode of the hydraulic oil is controlled, so that the hydraulic cylinder can be mechanically locked when it moves to the ends of the two-stage stroke, and can be shut down after the stroke is in place to reduce power consumption, and the system has high reliability.

The utility model discloses a damping buffer door closing structure which comprises an externally fixed door frame and a movable door leaf, the door leaf is connected on the door frame in a sliding or rolling mode, a damping assembly is arranged at the end of the door leaf, and a magnetic adsorption assembly is arranged between the door leaf and the door frame. The magnetic adsorption assembly comprises two magnets which are arranged between the door frame and the door leaf in parallel, and the opposite poles of the two magnets attract each other. When the door leaf of the sliding door is closed, the damping effect is achieved, violent impact is prevented, and the effect of automatically closing the door leaf can be achieved.