50results about How to "Stable protection" patented technology

The utility model relates to the technical field of high-sound-pressure-level intense-sound double-diaphragm transducers, and discloses a high-sound-pressure-level intense-sound double-diaphragm transducer, which comprises a transducer and is characterized in that a control assembly is arranged, a protection plate is in contact with the surface of a diaphragm, and the protection plate shields the diaphragm, so that the high-sound-pressure-level intense-sound double-diaphragm transducer is formed. A supporting rod fixed to the surface of the transverse plate abuts against the surface of the transducer, a pressing rod is pressed, a supporting plate fixed to the surface of the pressing rod slides under supporting of a first spring, a protruding block slides in a heart-shaped groove, and a movable rod fixed to the surface of the protruding block is turned over on the surface of the transverse block. A sliding rod fixed on the surface of a supporting plate drives a clamping rod to move out of a fixing frame under the supporting of a second spring, the clamping rod is clamped into a through hole in the supporting rod, a protruding block moves to a notch from a sharp opening of a heart-shaped groove to be fixed, a protection plate can stably protect the vibrating diaphragm, and the situation that dust enters the vibrating diaphragm when the vibrating diaphragm is not used, and transmission and vibration of sound waves are affected is avoided.

The utility model relates to the technical field of pressure gauges, and discloses a pressure gauge with a protection device, which comprises a pressure gauge body, connection mounting blocks are symmetrically arranged on the outer side of the surface of the pressure gauge body, a connection protection mechanism is arranged on the outer side of the surface of the pressure gauge body, and indexes and pointers are arranged on the inner side of the pressure gauge body. The outer side of the surface of the pressure gauge body is provided with a connection reinforcing mechanism, and the connection reinforcing mechanism is located between the surfaces of the adjacent connection installation blocks. According to the utility model, the connection installation blocks and the connection protection mechanism can be rapidly connected through the arrangement of the connection installation blocks and the connection protection mechanism; therefore, the connection protection mechanism can be installed and fixed, the connection protection mechanism can provide stable protection for the pressure gauge body, the pressure gauge body can be prevented from being damaged, the pressure gauge body can be stably used, and operation is convenient.

The utility model discloses an inorganic solid waste automatic screening and utilizing system which comprises a supporting frame and a smashing machine arranged on one side of the supporting frame, a screening structure used for screening inorganic solid waste is arranged in the supporting frame, and a protection structure used for preventing dust chippings from splashing is arranged at the top end of the smashing machine. The protection structure comprises a flexible protection pipe, connecting pieces are arranged at the two ends of the flexible protection pipe correspondingly, conveying structures used for conveying discharged materials are arranged at the bottom end of the supporting frame and the bottom end of the pulverizer correspondingly, and the screening structure comprises rotating rings symmetrically arranged on the horizontal plane. The corresponding connecting protection structure is arranged at the discharging position of the screening structure, the flexible protection pipe is used for preventing dust flying or scrap splashing caused during discharging and smashing, environment pollution caused by dust flying or scrap splashing is avoided, meanwhile, the screening structure is connected with the smashing machine through the connecting pieces arranged at the two ends of the flexible protection pipe, and the screening effect is improved. And protection is stably formed.

The utility model discloses a single layer TPV special-shaped cooling water pipe mounting assembly, including special-shaped pipe body, the both ends of special-shaped pipe body swing joint has the mounting ring, and the mounting ring fixedly connected with the fixed support of special-shaped pipe body is fixed support, and the inside of fixed support is provided with positioning assembly, and positioning assembly includes the mounting plate swing in the four arounds of fixed support, and the both ends fixed mounting of inside of fixed support have the locating rod, and the both ends swing of locating rod are connected with the locating plate, and the locating plate between is fixedly installed with telescopic spring through bolt, and telescopic spring swing in the outer periphery of locating rod. It is related to water pipe installation related technical field, and the convenient assembly of fixed support is completed to locating rod, and through the motion of arc handle in arc movable slot, drives the relative motion of locating plate in locating rod, and locating plate extrudes telescopic spring simultaneously, and the convenient high efficiency assembly and disassembly of special-shaped guide pipe are completed, and the connecting place of special-shaped pipe body can also be effectively stably protected.

The utility model relates to an ore body mining laser measuring instrument, which aims at solving the technical problems that the button of the current operation end is not protected and the mistaken touch condition caused by collision exists in a mine tunnel, and comprises a laser orientation instrument body, the bottom of the laser orientation instrument body is provided with a machine base, and the top of the laser orientation instrument body is provided with a button end cover. A protection structure is further included. The protection structure is arranged at the top of the button end cover; the protection structure comprises a baffle plate; the baffle plate is rotationally arranged above the button end cover; and one end of the bottom of the baffle is rotationally connected with one end of the top of the button end cover through a rotating shaft. The button protection device has the advantage that the button on the button end cover is blocked and protected under the condition that the laser orientation instrument body does not work.

The utility model discloses an anti-collision device for a crane jib, which relates to the technical field of cranes and comprises a fixing mechanism mounted on the crane jib and a protection mechanism, the fixing mechanism comprises two fixing plates, and connecting bolts connected with the crane jib are arranged on the inner walls of the tops and the bottoms of the inner sides of the two fixing plates. The protection mechanism comprises protection plates, the two protection plates are arranged on the outer sides of the two fixing plates correspondingly, traction plates are installed at the two ends of the top and the two ends of the bottom of one side of each protection plate correspondingly, movable seats are installed on one sides of the traction plates, and traction springs are arranged between the opposite ends of the two movable seats with the same height and the inner walls of the fixing plates correspondingly. The fixing plate can be installed on the outer side of the crane jib through the connecting bolt, the protective plate can protect the crane jib under the action of the traction spring and the traction plate, and the crane jib can be prevented from being collided in the moving process.

The utility model relates to the technical field of automobile film manufacturing, and discloses a PET (Polyethylene Terephthalate)-based composite coating automobile solar film laminated structure which comprises an outer laminated film layer, an inner adhesive film layer is adhered and fixed on the bottom surface of the outer laminated film layer, the outer laminated film layer comprises a PET base layer, a main grid layer is embedded in the PET base layer, and the inner adhesive film layer is adhered and fixed on the inner adhesive film layer. The upper side and the lower side of the main grid layer are connected with connecting wires, a UV absorption layer is attached to the bottom face of the PET base layer, a second grid layer is embedded into the UV absorption layer, and a groove layer is formed in the top face of the PET base layer. The PET base layer, the UV absorption layer and the nano ceramic coating are mutually overlapped and fixed, the main grid layer, the second grid layer and the third grid layer are distributed and embedded among the PET base layer, the UV absorption layer and the nano ceramic coating, and the three groups of grids are connected and fixed through the connecting wires, so that the structure between the overlapped film layers is reinforced, and the film layers are not easy to deform. And the structure use stability is kept.

The application discloses a kind of mountainous area highway slope rockfall protection equipment, including supporting mechanism;The supporting mechanism includes protection plate, and further include at least one first linear degree of freedom;At least four The protection plate is hinged between each other and is folded mutually;The technology of the application can flexibly unfold and adjust the position, angle and form of protection plate according to actual situation by the design of supporting mechanism, abutting mechanism and carrying mechanism.This makes the protection device can adapt to different shapes of slope and various rockfall angle, improves the overall adaptability.M type of unfolding mode makes impact force more evenly distributed on each folding layer, thereby reducing the risk of damage caused by excessive local stress.This helps to prolong the service life of protection plate, reduces maintenance cost.M type of unfolding mode makes the side with acute angle face the side of mountainous area slope rockfall, this design can better intercept and block rockfall.

The present invention relates to the technical field of intelligent production sorting robots, and specifically to a stabilizing component and an intelligent production sorting robot, wherein the stabilizing component comprises: a fixed block, a protective net, a connecting rod, a top holding limit piece and a stabilizing protective piece; the beneficial effect is: the intelligent production sorting robot drives two groups of clamps to approach, thereby sorting and clamping objects, and when the clamps move closer, the connecting rod is driven to move, and the connecting rod presses the movable limit block toward the fixed block through the limiting inclined surface, and the movable limit block is limited and slides through the limiting rod, and drives the movable rod to extend outward through the connecting plate, thereby driving multiple groups of connecting rods 1, 2, limiting connecting rods 1 and 2 to extend outward through the cooperation of the fixed protrusion and the movable shaft, thereby driving the protective net to extend below the clamps of the intelligent production sorting robot, and stably protecting the objects clamped by the intelligent production sorting robot.

The utility model relates to the technical field of building construction, and discloses a building construction edge protection structure which comprises two limiting shells. According to the building construction edge protection structure, through arrangement of limiting shells, T-shaped inserting rods, an adjusting mechanism and a fixing mechanism, the two limiting shells are clamped into the two T-shaped inserting rods correspondingly, the adjusting mechanism can be fixed, the two limiting shells are stretched under the action of a rotating handrail and four rotating shafts A till the limiting shells are stretched to the proper length, and then the limiting shells are fixed; the transverse length of the device can be adjusted according to the area for use, the complexity and the cost of engineering are reduced, the practicability and the convenience of the device are improved, the two supporting legs are stretched downwards under the action of the two supporting frames, the two supporting legs are unfolded, then the device can be fixed, it is ensured that the device is firmly fixed, and the practicability is high. Therefore, more stable protection is provided, and the risk of structure displacement or inclination caused by wind blowing on a construction site or accidental collision of workers is reduced.

The utility model relates to the technical field of logistics management, and discloses a logistics management platform alarm device comprising an alarm body, the top of the alarm body is provided with a button switch, one end of the alarm body is provided with a USB connecting line, the bottom of the alarm body is fixedly connected with a connecting base plate, and the connecting base plate is fixedly connected with the button switch. The outer side of the surface of the connecting bottom plate is movably sleeved with a limiting sleeve block, and fixed limiting mechanisms are symmetrically arranged at the top end of the limiting sleeve block. Through mutual cooperation of the connecting bottom plate, the limiting sleeve block, the fixed limiting mechanism and the fixed limiting groove, the connecting bottom plate can be clamped into the inner side of the limiting sleeve block, the fixed limiting mechanism and the fixed limiting groove are clamped, and therefore the connecting bottom plate is fixed to the inner side of the limiting sleeve block; the button switch can be further fixed, the USB connecting line can be stably used, connection between the USB connecting line and the alarm body cannot be damaged, and operation is convenient.

The application discloses an eye lotion containing PHMB and a preparation method thereof, and belongs to the field of eye care preparations. The eye lotion takes PHMB as a bacteriostatic component, is matched with isotonicity regulators, buffers, humectants and EDTA2Na, and simultaneously adds trehalose and allantoin to construct a synergistic stable protection system. The eye lotion is prepared through a process flow of low-temperature light-shielding, preparation of a base liquid first and then addition of PHMB, two-stage sterilization filtration and aseptic filling. The application solves the technical problems that PHMB is easy to degrade in a liquid preparation, has poor stability, and the effective component is easy to attenuate after opening and use. Meanwhile, EDTA2Na and PHMB have a synergistic effect, trehalose and allantoin further stabilize the PHMB structure from a molecular level and inhibit oxidative degradation, so that the product can realize wide-spectrum and high-efficiency bacteriostasis at a low concentration. The obtained eye lotion is mild and non-irritating, clear and stable, and can still maintain stable physicochemical and bacteriostatic properties for a long time after opening, is suitable for industrial production, and can be used for daily eye cleaning, flushing, moisturizing and bacteriostatic care.

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

The utility model relates to the technical field of fertilizer air-cooled coolers, and discloses a dust-free fertilizer air-cooled cooler which comprises a mounting underframe, a stirring and cooling cylinder is fixedly connected to the inner side of the top end of the mounting underframe, and a feeding port is fixedly connected to the middle of the top end of the stirring and cooling cylinder. An exhaust fan is fixedly connected to the bottom of the inner side of the mounting bottom frame; according to the fertilizer stirring and cooling device, air can be conveyed to the inner side of the stirring and cooling cylinder through the first connecting pipe by the arranged exhaust fan, air cooling is carried out on fertilizer in the stirring and cooling cylinder, meanwhile, flowing air can be filtered through the filter plate when being exhausted to the outside, fine fertilizer is prevented from flowing to the outside to cause flying dust, and the fertilizer stirring and cooling device is convenient to use. And when the filter plate needs to be cleaned, a fixed connecting rod, a first connecting mounting plate and the filter plate can be quickly disassembled by adjusting a movable fastening mechanism, so that the filter plate is cleaned, and the operation is convenient.

The invention discloses a pair of wide-view laser protective goggles which comprises a goggle frame and a protective lens, the protective lens is clamped on the inner side of the goggle frame, the protective lens and the goggle frame are detachably connected, and the protective lens comprises an outer-layer protective piece, an inner-layer anti-fog piece and a liquid crystal tunable optical filter. The liquid crystal tunable optical filter is arranged between the outer-layer protection sheet and the inner-layer anti-fog sheet, the liquid crystal tunable optical filter, the outer-layer protection sheet and the inner-layer anti-fog sheet are connected in a bonding mode, the glasses frame is electrically connected with the protection lenses, and an MCU control module is arranged in the glasses frame and used for controlling the liquid crystal tunable optical filter. The liquid crystal tunable optical filter is arranged in the protective lens, the liquid crystal tunable optical filter utilizes the electro-optical effect of liquid crystal, a liquid crystal layer is embedded in the liquid crystal tunable optical filter, different electric fields are applied, the orientation of liquid crystal molecules can be changed, and therefore the absorption and reflection characteristics of the lens to lasers with different wavelengths are adjusted.

The utility model relates to the technical field of artificial lake, disclose based on sodium bentonite's artificial lake wall body protection structure, including the wall body of arrangement in artificial lake periphery, wall body is along the circumferential of artificial lake and surrounds arrangement, the bottom of artificial lake has lake bottom layer, the wall body has the inside lateral wall towards artificial lake, be equipped with the integral waterproof blanket in artificial lake, the waterproof blanket is made of sodium bentonite, the waterproof blanket has lateral wall layer and bottom layer, the lateral wall layer covers the inside lateral wall of wall body, and the lateral wall layer is fixed on the inside lateral wall, bottom layer covers on lake bottom layer, bottom layer is covered with backfill layer, and backfill layer fixes bottom layer on lake bottom layer. Through setting up wall body and arranging integral waterproof blanket made of sodium bentonite in artificial lake periphery, the remarkable promotion of artificial lake wall body protection performance is realized.

This invention belongs to the field of spraying technology and relates to a low-cost, long-lasting metal-reinforced anti-corrosion coating and its preparation method adapted to the alternating salt and freeze environments of cold regions worldwide. The coating consists of, from the inside out, a metal substrate, an arc-sprayed pure aluminum underlayer, and a controllable, high-energy accelerated oxidation dense alumina ceramic transition layer. This invention focuses on core technologies for metal surface strengthening, using arc spraying instead of high-cost supersonic spraying, significantly reducing construction costs. It innovatively employs two exclusive high-energy accelerated oxidation processes: electric furnace oxygen-assisted high-temperature oxidation and laser in-situ oxidation. These processes can rapidly generate a highly dense, highly sealed alumina ceramic reinforcement layer on the surface of the sprayed aluminum metal layer, completely solving the industry shortcomings of existing processing technologies, such as the thinness of traditional electrophoretic coatings, easy penetration and corrosion of the substrate by chloride ions, and the porosity, insufficient density, and poor salt and freeze resistance of simple thermal spraying aluminum coatings. This solution features pure metal-ceramic reinforced protection, free from interference from organic paint coatings. It offers flexible processing, strong substrate versatility, and wide applicability. The metal coating, after high-energy oxidation reinforcement, possesses excellent salt spray resistance, freeze-thaw resistance, aging resistance, and high density and impermeability. It is specifically designed for harsh working conditions in global temperate cold regions, high-altitude permafrost regions, high-salt freeze-thaw environments, and low-temperature strong ultraviolet radiation. Its overall cost-effectiveness and service life far surpass existing traditional metal corrosion protection technologies.

The utility model relates to an intelligent watch capable of preventing misoperation in the technical field of intelligent watches, which comprises an intelligent watch body, watchbands are arranged at the lower parts of the front and rear surfaces of the intelligent watch body; the fixed protection mechanism is fixedly arranged on one side of the intelligent watch body; the fixed suction block is fixedly arranged at the lower part of the other side of the intelligent watch body; the fixing protection mechanism comprises a fixing suction block and a connecting positioning mechanism, the connecting positioning mechanism is fixedly arranged in the middle of the top end of the fixing suction block, the fixing protection mechanism comprises a connecting mounting seat, and a movable deflection block is movably connected to the inner side of the connecting mounting seat. According to the intelligent watch, the fixing protection mechanism can be limited, so that the fixing protection mechanism can protect keys on the top and the side face of the intelligent watch body, misoperation on the intelligent watch body in the using process is avoided, the structure is simple, and operation is convenient.

This utility model provides a strongly shielded low-voltage cable, relating to the field of low-voltage cable technology. The strongly shielded low-voltage cable includes several wire harness bodies and a protective outer shell. Each wire harness body has a tinned copper layer on its outer side, a copper foil shielding layer on the outer side of each tinned copper layer, an aluminum foil shielding layer on the outer side of each copper foil shielding layer, and a stainless steel braided layer on the outer side of each aluminum foil shielding layer. Several partitions are fixed in the middle of the protective outer shell, and reinforcing ribs are fixed at adjacent ends of the partitions. This strongly shielded low-voltage cable achieves a strong shielding effect through the tinned copper layer, copper foil shielding layer, aluminum foil shielding layer, and stainless steel braided layer on the outer side of the wire harness body, thereby improving the performance of the low-voltage cable. The partitions separate the wire harness bodies, achieving a stable protective effect and extending the service life of the low-voltage cable.

The utility model discloses a wear-resistant optical lens, which comprises a lens body, one side of the lens body is provided with a fixing part, the other side of the lens body is provided with a telescopic part, one end of the telescopic part far away from the fixing part is provided with a lens body, and the outside of the fixing part is provided with a first outer protective tube. A second outer protection tube is arranged outside the telescopic part, the second outer protection tube is connected with the first outer protection tube in a matched mode, a dustproof sealing ring is arranged at the end, away from the lens body, of the second outer protection tube, and the dustproof sealing ring is connected with the first outer protection tube in a matched mode. The utility model relates to the technical field of optical lenses, and solves the problems that in the prior art, in daily use of an optical lens, due to friction between the optical lens and dust, grit or other objects, the surfaces of a lens shell and a lens are possibly scratched and abraded, so that the stability and the imaging quality of the lens are influenced, and the service life of the optical lens is influenced.

This invention relates to a highly stable lutein-zeaxanthin soft capsule and its preparation process, belonging to the field of health product technology. The soft capsule comprises a shell and contents. The contents include core-shell structured composite coated particles and a plant oil carrier. The particles have a core-shell structure: the core is a microcapsule formed by emulsifying lutein and zeaxanthin with sodium octenyl succinate starch; the outer shell is a coating layer formed by in-situ deposition of zein on the surface of the core microcapsule using an antisolvent precipitation method. Natural antioxidants are dissolved in the plant oil carrier, spontaneously enriching in the oil phase region between the inner wall of the shell and the composite coated particles to form an interfacial antioxidant protective layer. The preparation process is carried out at low temperature, under nitrogen protection, and protected from light throughout. The gradient core-shell structure achieves stable protection in the stomach and targeted release into the intestine. Combined with interfacial antioxidant protection and comprehensive process protection, it improves the storage stability and bioavailability of the active ingredients. The product has no solvent residue and is safe for industrial production.

The invention discloses a low-temperature-resistant marine environment ship alloy coating, and relates to the technical field of coatings, the coating is composed of a metal alloy, resin, a hole sealing agent and a modified additive, the modified additive comprises a nano metal oxide, a filler and a catechol-containing monomer, and the nano metal oxide, the filler and the catechol-containing monomer interact through specific functional groups to form a stable cross-linked network. The components have a synergistic effect, the metal alloy provides mechanical support and an anti-corrosion foundation, the resin constructs a compact film-forming structure, the hole sealing agent blocks permeation of a corrosive medium, and the modified additive strengthens the low-temperature-resistant toughness, the interface bonding force and the anti-corrosion stability of the coating. The coating adapts to harsh conditions such as high salt mist and mechanical impact of low-temperature ocean, the problems that an existing coating is prone to cracking and falling off, and corrosion prevention fails are effectively solved, and long-acting stable protection is provided for ships.

This utility model discloses an internal double-sided support structure for a photovoltaic film-coated enclosure box, comprising a device body, a base, an enclosure, a top cover, double-sided metal support frames, and film devices. The enclosure is installed on the outer side of the top of the base, and the top cover is installed on the top of the enclosure. A set of double-sided metal support frames is provided, all installed on the top of the base and inside the enclosure. A set of film devices is provided, installed between the double-sided metal support frames. Each double-sided metal support frame includes a first bracket and limiting blocks. A set of limiting blocks is provided, and a set of limiting blocks is welded to the bottom of the first bracket. The first bracket includes a main frame, a first frame body, a second frame body, a first embedding frame, and a second embedding frame. This device solves the problems of low mechanical strength of cardboard boxes, heavy weight of iron boxes, poor sealing, and large unfolded usable area.

The utility model provides a combined side slope protection structure, which relates to the field of side slope protection and comprises a side slope and a slope protection net, the slope protection net is fixed on the slope surface of the side slope through a positioning anchor rod, a protection baffle is fixedly mounted on the slope ground of the side slope, and a cushioning clamping plate is attached to the right side groove surface of the protection baffle. Spring shock absorbers are installed on the upper surface and the lower surface of the cushioning clamping plate in a supporting mode, a falling stone collecting frame is fixed to the right side face of the cushioning clamping plate through fastening bolts, a buffering rubber block is fixed to the right side frame face of the falling stone collecting frame, and the left side end of the falling stone collecting frame is attached to a protection baffle through a vibration isolation plate. The utility model solves the problem in the prior art that the vibration strength caused by the impact of falling rocks on a side slope on the baffle can influence the thread meshing stability of the stabilizing device and the firmness of the baffle.

The utility model relates to the technical field of automobile wire harnesses, in particular to a wear-resistant automobile wire harness, which comprises a first connector, and the surface of the first connector is connected with a second connector through a lead; grooves are formed in the surfaces of the first connector and the second connector; a protection structure is installed on the outer side of the first connector and the outer side of the second connector and comprises a fixing block, the fixing block is fixedly installed on the outer wall of the first connector and the outer wall of the second connector, the end of the fixing block is rotationally connected with a connecting block, and a coil spring is arranged at the joint of the fixing block and the connecting block. The end part of the connecting block is fixedly connected with a clamping plate, and the outer side of the wire is sleeved with a wear-resistant sleeve. According to the utility model, through the arrangement of the groove and the clamping plate, the wear-resistant sleeve and the rubber band can be further stably fixed on the first connector and the second connector, so that the protection effect of the wear-resistant sleeve on the wire is ensured, and the service life of the device is prolonged.

The utility model discloses an anti-tumbling safety vest, a main body part comprises a vest, the two ends of the upper part of the front side of the vest are fixedly connected with connecting sleeves, the middle parts of the connecting sleeves are hollow, the inner walls of the connecting sleeves are fixedly connected with springs I at the bottoms of the hollow parts, and the tops of the springs I are fixedly connected with pressing plates; the side wall of the pressing plate is slidably connected with the inner wall of the hollow part of the connecting sleeve, extrusion pieces are slidably connected to the inner wall of the connecting sleeve and located on the two sides of the pressing plate, the sides, close to the pressing plate, of the outer walls of the two extrusion pieces are inclined planes, and balls are movably connected to the sides, located on the inclined planes, of the extrusion pieces; the outer wall of the ball is movably connected with the inner wall of the connecting sleeve, one end of the ball is located on the inner side of the hollowed-out position of the connecting sleeve, the uninflated air bag is stored through the air bag filling bag, and the air bag filling bag is in butt joint and fixed with the connecting sleeve of the waistcoat through the inserting block connected with the second elastic band. And quick disassembly can be realized by pulling the pull ring at the front chest.

The utility model relates to the technical field of printers, in particular to a trolley bottom plate for a printer, which comprises a bottom plate body, a mounting groove is arranged at the top of the bottom plate body, an ink outlet through groove is arranged at the bottom of the inner side of the mounting groove, and fixed mounting slots are symmetrically arranged at the bottom end of the bottom plate body. A connection protection mechanism is movably inserted into the inner side of the fixed mounting slot, the connection protection mechanism comprises a connection mounting insertion block, the bottom end of the connection mounting insertion block is fixedly connected with a protection bottom plate, and the fixed mounting slot and the connection protection mechanism are matched with each other, so that the connection protection effect is improved. And when the bottom plate body and the printing spray head are not used, the connection protection mechanism and the fixed mounting slot can be connected and matched, so that the connection protection mechanism is located at the bottom of the bottom plate body, the printing spray head mounted at the top of the bottom plate body can be stably protected, and operation is convenient.

The utility model discloses a laser welding fixture, relates to welding fixture technical field, including fixing mechanism, also including clamping mechanism and protection mechanism, clamping mechanism includes five support shaft and first motor, five support shaft one side outer wall all is sleeved with driven gear, support shaft outer side is sleeved with a plurality of limit seat, and the first motor is fixed in the support shaft. And the protection mechanism comprises a rotating shaft, the outer side of the top of the rotating shaft is sleeved with a rotating plate, the two ends of the top of the rotating plate are each provided with a traction plate, and the tops of one ends of the two traction plates are each provided with a protection cover. The vacuum connector can be kept stable on the outer sides of the supporting shafts through the sealing heads, the first motor works to enable the five supporting shafts to rotate, the vacuum connector can be conveniently welded in different directions, meanwhile, the second motor works to enable the rotating plate to rotate, and under the traction effect of the two traction plates, the vacuum connector can be conveniently welded in different directions. And the supporting shaft and the limiting seat can be protected by the two protective covers.