36results about How to "Tight adsorption" patented technology

The invention discloses a drawing and pultrusion process for glass fiber reinforced plastic product processing, and relates to the technical field of glass fiber reinforced plastic product processing, and the drawing and pultrusion process comprises the following steps: arranging a reinforcing material: arranging the reinforcing material on a creel; impregnation: enabling the reinforcing material to pass through an impregnation tank and to be impregnated with the resin glue solution; preforming, wherein the impregnated reinforcing material enters a preforming device; extrusion molding and curing: putting the preformed reinforcing material into a mold, and gelling and curing in the mold to form a tubular glass fiber reinforced plastic profile; pulling, namely pulling the cured tubular glass fiber reinforced plastic profile out of the mold by a pulling device; cutting: cutting the drawn tubular glass fiber reinforced plastic profile according to a preset length; the clamping module drags the tubular glass fiber reinforced plastic profile forwards by a certain distance, after the clamping module moves to the limiting position, the clamping module loses the clamping effect on the tubular glass fiber reinforced plastic profile, the reciprocating moving part drives the clamping module to move to the initial position, and continuous traction of the tubular glass fiber reinforced plastic profile can be achieved by repeating the steps.

The invention relates to the technical field of surveying and mapping robots, in particular to a surveying and mapping robot for pipeline contour intelligent surveying and mapping. Comprising a main shaft, a detection plate, a detection device, a driving assembly, a detection probe, a first hydraulic cylinder, a second hydraulic cylinder, a bearing plate and climbing claws, according to the invention, the following problems in the intelligent surveying and mapping process of the pipeline contour in the prior art can be solved: a vertical pipeline cannot be surveyed and mapped, and the application range is relatively small; in the detection process, dirt cannot be removed, the detection precision is low, and a real pipeline contour cannot be detected; the device can ascend and descend in a vertical pipeline, and the adaptability and flexibility of the device are greatly improved; the device can adapt to changes of the inner wall of the pipeline, and tight adsorption is achieved; dirt on the inner wall of the pipeline can be removed in the moving process through the scraping plate, so that the real outline of the pipeline is mapped, and the mapping precision and accuracy are greatly improved.

The invention discloses an automatic saw blade replacing mechanism for an edge sawing machine, and relates to the technical field of edge sawing machines, the automatic saw blade replacing mechanism comprises a bottom plate, a mounting motor is fixedly connected to the edge of one side of the upper surface of the bottom plate, a fixing plate is fixedly connected to the edge of the other side of the upper surface of the bottom plate, and a mounting plate is fixedly connected to the position, close to the fixing plate, of the upper surface of the bottom plate; a mounting plate is fixedly connected to one side of the bottom plate, a storage cylinder is fixedly connected to one side of the mounting plate, a plurality of new circular saw blades are arranged in the storage cylinder, a sliding rail plate is fixedly connected to the upper surface of the bottom plate, a stop plate is fixedly connected to one side of the storage cylinder, and a discharging seam is formed in the position, under the storage cylinder, of the upper surface of the bottom plate. According to the automatic saw blade replacing mechanism for the edge sawing machine, the mounting mechanism is designed for dismounting the saw blade, the cleaning mechanism is designed for cleaning the saw blade, the mechanical arm mechanism is designed for replacing the saw blade, dismounting, cleaning and saw blade replacing are conducted at the same time, and the effects of rapidly replacing the saw blade and saving time are achieved.

The utility model discloses a cell counter with an anti-toppling function, and relates to the technical field of cell counters, the cell counter comprises a counter main body, the front surface of the counter main body is fixedly provided with a display screen for displaying the number of cells and an adjusting button for operating the counter main body, a bottom plate is fixedly arranged on the bottom surface of the counting instrument main body, the counting instrument further comprises a detection mechanism, a brake mechanism and an anti-toppling mechanism, the detection mechanism can detect cells in multiple groups of reagent tubes and can clamp test tubes at the same time, the placement stability of the test tubes is improved, and the brake mechanism prevents the instrument from displacing due to vibration during use, so that the accuracy of test tube placement is improved. And by means of the anti-toppling mechanism, the counting instrument main body is more stable during use, and the effect of preventing the instrument from inclining during use is achieved.

The invention discloses a surface micro-texture of a radial sealing fin of a cycloid rotor engine. The surface micro-texture comprises a double-layer herringbone groove, a sealing weir area and a sealing dam area. The double-layer herringbone groove is formed in the contact surface of the rotor, gas enters the groove from the upper-layer gas inlet and the lower-layer gas inlet in the vertex angle of the herringbone groove, the maximum pressure value is achieved in the groove, and the gas is exhausted from the upper-layer gas outlet and the lower-layer gas outlet after the pressure difference effect is completed. A plurality of pairs of herringbone grooves are evenly distributed in the radial sealing piece, a sealing weir area is arranged between every two adjacent pairs of herringbone grooves in the axial direction, and a sealing dam area is arranged on the outer side. The herringbone grooves are of an axial symmetry structure, the groove depth is 1-5 micrometers, the number of the herringbone grooves is 2-10 pairs, and the edges can be straight lines, arc lines, spiral lines or sawtooth lines. Gas enables the radial sealing fins and the rotor to be tightly adsorbed through pressure difference, and the sealing weir area and the sealing dam area provide multi-layer sealing protection. The air tightness problem of the radial sealing piece is solved, the stable radial sealing performance of the cycloid rotor engine is achieved, and gas leakage is remarkably reduced.

The invention belongs to the technical field of food safety detection, and particularly discloses a method for detecting PAEs in milk based on an Au-Ag-IP6SERS substrate, and the method comprises the following steps: preparing gold nanoparticles; au (at) Ag (at) IP6 nanoparticles are prepared; preparing an Au (at) Ag (at) IP6NPs SERS substrate; preparing a phthalic hydrazide standard substance and a phthalic acid ester standard substance; preparing the phthalylhydrazine generated by the reaction of the phthalic acid ester; preparing a milk standard sample and performing pretreatment; preparing an SERS sample to be detected; and performing Raman detection. According to the method, more than thirty PAEs can be uniformly converted into the phthalylhydrazine molecules, so that not only is the non-water-soluble problem of the PAEs solved, but also the total amount of all PAEs can be detected at the same time; compared with a detection method taking other gold and silver nanoparticles as an SERS substrate, the scheme has the advantages that the phthalylhydrazine molecules can be specifically captured, the sensitivity is higher, and the detection limit is lower. After the SERS substrate is prepared, PAEs can be detected only through simple pretreatment, and PAEs in milk can be rapidly detected within 15 min.

The invention discloses a water-based polyurethane dispersion containing a heterocyclic group side chain and having an excellent anti-corrosion function and a preparation method of the water-based polyurethane dispersion. The key technology is that a benzothiazole group is introduced into a side chain structure of a waterborne polyurethane molecule to form a benzothiazole group side chain which is uniformly distributed and can rotate freely, and the benzothiazole group side chain can be oriented on the surface of a metal substrate and form tight adsorption. Besides, a component with a linear symmetric annular skeleton structure is selected to reinforce the cohesive strength of the waterborne polyurethane, a proper cross-linking agent and a synthesis process thereof are determined, and when the density of a cross-linking point is in a range of 2.0-2.6 * 10 <-4 > mol / g, the water resistance, the heat resistance and the mechanical strength of the obtained waterborne polyurethane dispersion are all enhanced, and the water resistance, the heat resistance and the mechanical strength of the waterborne polyurethane dispersion are improved. And the characteristics cooperate with the corrosion inhibition effect of the benzothiazole side chain group, so that the corrosion resistance of the waterborne polyurethane coating film is further improved. The waterborne polyurethane resin synthesized by the invention can be used as a film-forming polymer for preparing waterborne anticorrosive paint with excellent performance.

The invention discloses a surface polishing device for automobile part production. The surface polishing device comprises a shell and a supporting disc, and a rotating mechanism is fixedly mounted at the top of the supporting disc; the rotating mechanism comprises a belt pulley set, a first rotating shaft and a second rotating shaft, the right end of the second rotating shaft is rotationally connected with the outer wall of the left side of the shell through a bearing, the outer wall of the second rotating shaft is fixedly connected with the inner wall of a driving wheel in the belt pulley set, and the outer wall of the first rotating shaft is fixedly connected with the inner wall of a driven wheel in the belt pulley set; a first rotating shaft penetrates through the outer wall of the shell through a bearing, a three-way valve is opened to a pipeline communicated with a dust removal box, at the moment, a circulating air pump works to suck outside air into the dust removal box through the three-way valve, then air is exhausted into an air pipe, and it is guaranteed that air is continuously blown to the grinding position; and dust in the air entering the dust removal box is filtered out by the dust screen, so that the dust is prevented from being blown to the polishing position.

According to the corrosion-resistant metal protection liquid and the preparation method and application thereof, a modified cerium-containing compound is deposited on the surface of carbon steel through an electrochemical means, especially allylthiourea and 4-carboxybenzimidazole are used for improving the chemical property of a film layer, and compared with the prior art, the corrosion-resistant metal protection liquid has the advantages that the preparation method is simple, conditions are mild, control is easy, and the corrosion-resistant metal protection liquid is suitable for large-scale production. And the corrosion resistance is excellent.

The invention relates to the technical field of metal protection, in particular to a preparation process of allylthiourea capable of reducing the metal corrosion rate, and aims to overcome the defects that although a traditional metal corrosion inhibitor containing a thiourea group can slow down the corrosion rate to a certain extent, the corrosion inhibition effect is limited, and the environmental adaptability is poor. The industrial application of the material in the field of metal protection is limited. The molecular structure of the allylthiourea contains a plurality of thiourea groups, pyridine rings and trifluoromethyl, the thiourea groups, the pyridine rings and the trifluoromethyl jointly act on the metal surface under the synergistic effect, the overall performance is improved through the enhancement effect, the prepared allylthiourea has excellent corrosion inhibition performance, and the corrosion inhibition effect is good. The metal corrosion rate can be effectively reduced, and more excellent performance is shown in the field of metal protection.

The utility model discloses an anesthesia depth evaluating and monitoring device which comprises an electrocardiograph monitor, the top of the electrocardiograph monitor is fixedly connected with a first handle, a control button is arranged on the outer wall of one side of the electrocardiograph monitor, a knob is arranged on the outer wall of one side of the electrocardiograph monitor, and the first handle is fixedly connected with the first handle. A first connecting line is arranged on one side of the electrocardiograph monitor, a connector is arranged at one end of the first connecting line, a second connecting line is arranged at one end of the connector, and a monitoring head is arranged at the end, away from the connector, of the second connecting line. According to the monitoring device, when medical staff do not need to use the monitoring device, the magnetic strips on the two sides of the second connecting lines can attract each other, so that the second connecting lines can be stacked in order, the situation that the subsequent normal use of the second connecting lines is affected due to winding of the second connecting lines is avoided, meanwhile, the area where the magnetic strips attract each other is the rectangular plate, and the working efficiency is improved. Therefore, the attraction area of the magnetic strips is enlarged, and the magnetic strips are attracted more tightly.

The utility model provides an industrial robot clamping component assembly, which relates to the technical field of industrial robot clamping parts and comprises a top plate, a clamping component and an adjusting component, a power component is arranged on the top plate, a vacuum pump is fixedly connected to one side, close to the power component, of the top of the top plate, the clamping component is arranged on the outer side of the top plate, and the adjusting component is arranged on the top plate. The adjusting assembly is arranged on the clamping assembly; the clamping assembly comprises a supporting frame, a clamp and a vacuum suction cup, the supporting frame is rotationally connected to the top plate, and a fixing plate is rotationally connected to the side, away from the top plate, of the supporting frame. The clamp and the vacuum suction cup are matched with each other, the vacuum suction cup can still clamp the workpiece under the condition that the clamp is damaged, otherwise, the clamp can still clamp the workpiece, the workpiece is prevented from falling off from the clamping assembly, and the workpiece is prevented from being damaged.

The utility model discloses a corner small honeycomb processing assembly for an unmanned aerial vehicle, and relates to the field of honeycomb processing assemblies, the corner small honeycomb processing assembly comprises an air pump, the output end of the air pump is provided with a multi-way pipe, the output end of the outer side of the multi-way pipe is provided with three groups of supporting pipes, the outer sides of the supporting pipes are provided with guide edges, and the guide edges are internally provided with closed air bags. According to the utility model, the air pump works, air is sucked through a plurality of external air inlets, and a part of the air inlets are connected with the air inlet pipes, so that negative pressure can be generated in the air inlet pipes, and the negative pressure can be transmitted to the communicated adsorption channels. As the opening of the adsorption channel is tightly attached to the wall, negative pressure can act on the wall at the moment, and then the adsorption edge is attached more tightly; part of gas is shunted into the fog tank through the multi-way pipe, and a bee killing agent in the mixed fog tank enters the fog inlet pipe and then enters the space of the closed honeycomb in the soft film to kill bee colonies in the honeycomb.

The utility model discloses a flexible connecting wire with strong flexibility, which comprises a splicing structure, an output wire harness connected with two ends of the splicing structure and a telescopic input wire segment, the splicing structure comprises two lateral shells and a forward shell, the lateral shells are respectively and movably connected with the forward shell, and the output wire harness is connected with the two ends of the splicing structure. The splicing structure further comprises a disc, the disc is connected with the lateral shell and the forward shell, movable structures are arranged at the connecting positions of the lateral shell and the disc and the connecting positions of the forward shell and the disc, and attaching structures are arranged at the connecting positions of the lateral shell and the forward shell. After the lateral shell is close to the forward shell, the lateral shell and the forward shell can be tightly adsorbed through the attaching structure, and the storage performance of the connecting wire is further improved. Wherein the input line segment adopts a spring line structure, so that the length of a connecting line can be increased while the input line segment can be better stored, the use is more convenient, and the application range is widened.

The utility model discloses an intelligent quantitative drainage and tube falling early warning abdominal cavity drainage tube fixator which comprises a suction cup supporting arm fixing plate, a drainage tube connecting plate is fixedly arranged above the suction cup supporting arm fixing plate, and a suction cup supporting arm movable block is fixedly arranged on the side face of the suction cup supporting arm fixing plate. The side face of the suction cup supporting arm movable block is rotationally connected with a suction cup telescopic main supporting arm, the side face of the suction cup telescopic main supporting arm is rotationally connected with a suction cup telescopic auxiliary supporting arm, a suction cup butt-joint disc is fixedly arranged below the suction cup telescopic auxiliary supporting arm, and a silica gel suction cup is inserted below the suction cup butt-joint disc. The suction cup telescopic main support arm and the suction cup telescopic auxiliary support arm which are adjustable in angle and length are matched with the silica gel suction cup, so that flexible adjustment can be carried out according to the body type and the body position of a patient and the requirements of a drainage tube, and it is ensured that the fixator can be tightly and stably adsorbed to the abdomen of the patient; and the fixator can be kept stable under various body positions, so that the risk of falling of the drainage tube is reduced.

The invention relates to a distributed new energy grid-connected consumption information acquisition device, and belongs to the technical field of consumption information acquisition. The distributed new energy grid-connected consumption information acquisition device comprises spiral protective sleeves which are uniformly distributed; the protection devices are uniformly distributed and are mounted on the surface of the spiral protection sleeve; the locking devices are evenly distributed, the locking devices are installed on the surface of the spiral protective sleeve, and every two adjacent locking devices are connected in a clamped mode; wild animals biting the wire are driven through the high-speed airflow and the odorizers, the abrasion degree and the collision impact force of surrounding objects to the wire are reduced through the elastic and protruding design, the damage probability of the wire can be reduced, and it is ensured that absorption information can be normally collected.

The invention relates to the technical field of metal plate edge rolling machining, in particular to a PLC-controlled multifunctional semi-automatic edge rolling device which comprises a bottom table, a fixed table is rotationally installed at the upper end of the bottom table, an edge rolling wheel is arranged on the right side of the fixed table, a linear motor is rotationally installed at the upper end of the edge rolling wheel, and a first support is arranged on the outer side of the linear motor; according to the device, the sucker rods are driven by the driving plate to continuously descend until the sucker rods are tightly adsorbed and attached to the surface of a metal plate, rotation of the screw rods is stopped, and the two sides of the metal plate can be fixed through the arranged sucker rods; according to the metal plate edge rolling device, the situation that when a subsequent edge rolling wheel conducts edge rolling on a metal plate fixed by the pressing plate, the metal plate is only fixed by the pressing plate, the pressure of the edge rolling wheel on the metal plate is too large, and consequently the metal plate deviates is avoided, it is guaranteed that the metal plate is firmly fixed and does not deviate, and therefore the edge rolling quality of the metal plate is guaranteed.

The utility model relates to the field of puncture outfits, in particular to a visual puncture outfit, and aims to solve the technical problem that a doctor cannot observe the condition in an abdominal cavity when using the puncture outfit, so that the puncture outfit stabs visceral organs by mistake. According to the technical scheme, the visual puncture outfit comprises a puncture rod, a rotary knob, a sealing cap, a puncture cannula, a supporting assembly, a camera shooting assembly, a lamplight module and a limiting assembly; through combined operation of the supporting assembly, the camera shooting assembly, the light module and the limiting assembly, the stability and definition in the operation process are guaranteed, the accuracy and safety of the operation are greatly improved, a doctor can clearly observe an operation site through the high-definition capturing capacity of the camera shooting assembly, and meanwhile the operation efficiency is improved. The definition of the visual field is further enhanced through bright illumination of the lamplight module, and the four parts work cooperatively and jointly provide a more convenient and efficient operation effect for doctors.

The utility model provides a kind of water environment ecological pollution monitoring equipment, it is related to water environment monitoring technical field, including water bottom anchoring assembly, vertical pole, ferrule, horizontal cylinder, telescopic link, probe assembly, case and water level gauge.Water bottom anchoring assembly contains vacuum chuck and telescopic anchor rod, anchor rod end has oblique barb, can adapt hard water bottom and silt water bottom;Vertical pole ferrule can adjust height, telescopic link in horizontal cylinder can adjust probe assembly horizontal position;The fixed plate of probe assembly is equipped with motor-driven paddle and the probe with cleaning assembly, cleaning assembly is driven rotary brush head cleaning probe by hydraulic pump;Water level gauge is electrically connected with case, can be monitored in conjunction.Stable fixation to complex water bottom environment is realized, automatic cleaning probe avoids the influence precision of pollutant adhesion, mixes water body and makes pollutant distribute evenly to reduce monitoring deviation, simultaneously integrates water quality and water level data, improves the accuracy, continuity and adaptability of monitoring.

This invention discloses a signal detector for power transmission lines, relating to the technical field of signal detectors for power transmission lines. The signal detector includes a rectangular frame, with a fixing mechanism fixed to the upper surface of the frame. The fixing mechanism includes a fixing plate, a slider, an arc-shaped plate, a limiting spring, a sleeve plate, and a threaded rod. The fixing plate is fixedly connected to the upper surface of the rectangular frame. When the device is impacted, the shock-absorbing device, in conjunction with a hinge rod, a sliding rod, a thrust spring, and a friction block, reduces the downward sliding speed of the placement plate. This prevents the components inside the detector from colliding with each other due to the different speeds of their downward movement or resetting compared to the outer casing, thus avoiding damage to the internal components. This invention solves the problem of component damage caused by inertia leading to a difference in movement speed between the internal components and the outer casing.

The supporting device for the anti-unmanned aerial vehicle equipment comprises a shell and a mounting plate, a groove is formed in the shell, the mounting plate can ascend and descend in the groove, a plurality of adsorption assemblies are arranged on the shell, a plurality of protruding blocks are arranged on the mounting plate, each adsorption assembly comprises a suction cup, a supporting rod, a swinging rod, a lifting rod and a spring, the suction cups are arranged on the outer surface of the shell, and the supporting rods are arranged on the outer surface of the shell. The swing rod is arranged on the inner surface of the shell through a supporting rod, the top end of the swing rod is connected with the suction cup through a lifting rod, the spring can provide elastic force for the bottom end of the swing rod, a protrusion matched with the protruding block is arranged at the bottom end of the swing rod, and when the mounting plate descends, the protruding block can press the protrusion so that the swing rod can swing to pull the lifting rod to tension the suction cup and adsorb the suction cup to the wall. When the mounting plate ascends, the convex block leaves the bulge, the swinging rod resets under the action of elastic force, and the sucker is loosened and is separated from adsorption; the at least one adsorption assembly is arranged on the shell through the lifting assembly; the mounting plate is further provided with a movable protruding block capable of enabling the suction cup on the lifting assembly to be adsorbed to the wall face.

The invention discloses a flaw detection system and method for a main shaft of a large-scale wind driven generator, and relates to the technical field of flaw detection equipment.The flaw detection system comprises a frame body, and the inner side of the frame body is fixedly connected with a bottom plate; one side of the frame body is fixedly connected with a controller; the cleaning component is arranged at the top of the bottom plate, and the cleaning component is used for cleaning crack blockage; and the pressure infiltration part is used for enabling the fluorescent agent to infiltrate into the pores under the action of air pressure. According to the invention, the cleaning part is arranged on the basis of existing fluorescent flaw detection and is specially used for cleaning the side wall of the main shaft so as to remove powder impurities accumulated at the crack part of the side wall of the main shaft, so that the problem that a fluorescent agent cannot permeate into the crack due to accumulation in the crack is avoided; and a pressure permeation part is arranged, and the fluorescent agent can be assisted to permeate into the notch under the air pressure effect, so that the problem that the fluorescent agent cannot permeate due to the air pressure effect in the notch position is solved.

The invention discloses a plasma cutting protection liquid and application thereof, and the plasma cutting protection liquid is prepared from the following components in parts by mass: 5 to 12 parts of water-soluble resin, 1 to 5 parts of polymer electrolyte, 0.05 to 0.25 part of corrosion inhibitor, 0.01 to 0.1 part of flatting agent, 0.01 to 0.1 part of plasticizer, 5 to 10 parts of organic solvent and 50 to 80 parts of ultrapure water. Wherein the polymer electrolyte is used for adsorbing and conducting metal ions to migrate towards the direction far away from the surface of the wafer, so that the metal ions are not in contact with the metal bonding structure. The polymer electrolyte adopted in the invention has strong adsorbability and can tightly adsorb metal ions, so that the metal ions preferentially migrate from the bottom of the film layer to the top of the film layer along a molecular chain of the polymer electrolyte, and the problem that the metal ions migrate and separate out along the surface of the chip is avoided.

The invention belongs to the technical field of transportation equipment, and particularly relates to transfer printing silica gel trademark logo transportation equipment which comprises a stand column, the top of the stand column is fixedly connected with a driving shaft, and a conveying belt is arranged on the outer wall of the driving shaft; the transfer printing silica gel trademark transportation equipment further comprises a collecting mechanism and a limiting mechanism, the outer wall of the collecting mechanism is rotationally connected with the outer surface of the stand column, the limiting mechanism is used for adjusting the position of a silica gel trademark so that the silica gel trademark can be neatly collected, and the bottom of the limiting mechanism is fixedly connected with the top of the driving shaft. The transferring trademarks are stacked in sequence and can be accurately stacked in the placing assembly, a gap exists between the placing assembly and the vibration assembly, dust and impurities on the transferring trademarks fall to the bottom of the collecting box after being removed, separation of the impurities and the transferring trademarks is achieved, the phenomenon that the trademarks contain impurity fragments during stacking is avoided, and the transferring trademarks are prevented from being damaged. And the product is neatly packaged.

The present invention discloses a large-scale wind turbine main shaft flaw detection system and method, which relates to the technical field of flaw detection equipment, including a frame, the inner side of which is fixedly connected to a bottom plate; one side of the frame is fixedly connected to a controller; and also includes: a cleaning component, which is arranged on the top of the bottom plate, and is used to remove crack blockage; a pressure penetration component, and the pressure penetration component is used to allow fluorescent agents to penetrate into pores under the action of air pressure. The present invention arranges a cleaning component on the basis of existing fluorescent flaw detection, and specifically cleans the side wall of the main shaft to remove powder impurities accumulated in the crack part of the side wall of the main shaft, thereby avoiding the problem that the fluorescent agent cannot penetrate into the crack due to the presence of deposits in the crack; and a pressure penetration component is arranged, which can use the action of air pressure to assist the fluorescent agent to penetrate into the gap, thereby avoiding the problem that the fluorescent agent cannot penetrate into the gap due to the action of air pressure inside the gap.

The visual communication device comprises a bottom plate, a vertical rod, a fixing rod, a mounting plate and a displayer, supporting legs are arranged on the outer side of the bottom plate, the vertical rod is vertically fixed to the center of the upper end face of the bottom plate, the vertical rod is connected with the fixing rod, and transverse rods are fixed to the outer side of the fixing rod at equal angles. A mounting plate parallel to the bottom plate is fixed to the upper end of the fixing rod. According to the visual communication device capable of preventing the device from toppling due to the external force, a gravity automatic unfolding mechanism is adopted, and after the device is placed, the supporting legs can be unfolded outwards under the gravity action of the device, so that the supporting area of the device can be effectively increased, the toppling resistance of the device is improved, automatic storage can be conducted during transportation, and the device is convenient to carry; and in cooperation with an adsorption self-sealing mechanism, tight adsorption of the suction cups and the ground can be ensured, so that the whole device can be fixed, the device is prevented from sliding due to external force, and the stability of the device is ensured.

This utility model discloses a door catcher, belonging to the field of door accessory technology, including a catch base and a catch head. One end of the catch base has a first connector with a first connecting surface; the end of the catch head is movably connected to a universal joint, which has a second connecting surface that can fit against and magnetically connect with the first connecting surface. The second connecting surface rotates with the universal joint to adjust its orientation. During installation, the catch head is mounted on the door, and the catch base is installed at the corresponding position at the same height on the wall. After completion, the door is brought close to the wall, so that the end of the catch head is close to the end of the catch base. The universal joint is adjusted so that the second connecting surface faces the first connecting surface until they are fully fitted. By utilizing the universal rotation of the universal joint, the second connecting surface can be adjusted at multiple angles in three-dimensional space, achieving matching of the door catcher's adsorption angle with the door's opening and closing trajectory, avoiding problems of loose connection due to minor errors when fixing the catch head and catch base.

This utility model discloses a double-row flexible board paper removal and feeding machine, belonging to the field of feeding machine technology. It includes a mounting frame, a hydraulic lifting component, and a spacing adjustment guide rail. A mounting plate is connected to the spacing adjustment guide rail, and a sliding hole is provided on the mounting plate. A sliding rod is slidably connected to the sliding hole, and one end of the sliding rod is connected to a connecting plate. In this utility model, the adsorption structure composed of suction cups, sliding rods, and air bladders can automatically adjust according to the unevenness of the flexible board surface. When the flexible board surface has different heights, multiple sets of suction cups can contact the flexible board at different heights. The stretching of the air bladder generates negative pressure, achieving a tighter and more uniform adsorption of the flexible board surface. This avoids problems such as weak adsorption and displacement caused by uneven flexible board surfaces, ensuring the stability and safety of the flexible board during the transfer process and improving processing quality.

The utility model discloses a detachable anti-overturning wall connecting piece which comprises an anchoring piece, the anchoring piece is embedded in a concrete structure, the anchoring piece comprises a sleeve, one end of the sleeve is provided with an expanded bottom plate, the other end of the sleeve is an open end, and the open end is tightly attached to the inner side of a formwork of the concrete structure. After the template is removed, the open end of the sleeve is exposed out of the concrete structure; the open end of the sleeve is in threaded connection with one end of the connecting pipe, the connecting pipe is annularly sleeved with the adsorber, and the end, away from the concrete structure, of the adsorber is fastened through a hexagon nut, so that the adsorber is adsorbed to the outer surface of the concrete structure; and the other end of the connecting pipe is connected with the vertical rod in the outer frame. The device is high in stability, capable of being recycled, small in influence on later construction, low in construction cost and convenient to mount and dismount, cutting is avoided, and mounting efficiency and construction safety are improved.