78results about How to "Large carrying capacity" patented technology

The invention provides application of a phenolic compound and / or pharmaceutically acceptable salt thereof in preparation of a medicine for treating breast cancer and a pharmaceutical composition, and relates to the technical field of biological medicines. The invention discloses application of phenolic compounds and / or pharmaceutically acceptable salts thereof in preparation of medicines for treating breast cancer. The phenolic compounds comprise a compound 1 and / or a compound 2. The compound 1 (arnebidin) and the compound 2 ((+)-(R)-de-O-metalasiodiplodin) adopted in the invention have good inhibition effects on human triple-negative breast cancer MDA-MB-231 cell strains, the IC50 value of the compound 1 is 1.16 [mu] M, and the IC50 value of the compound 2 is 0.68 [mu] M, so that a new choice is provided for developing drugs for treating triple-negative breast cancer, and the compound 1 and the compound 2 have good application prospects. The compound has a good application prospect in preparation of medicines for treating breast cancer, especially medicines for treating triple-negative breast cancer.

The utility model discloses an optical fiber composite submarine cable, comprising conductor units, an optical unit, a support filling and an outer layer protection structure, the conductor units are arranged in the outer layer protection structure in an annular array, the support filling is arranged between adjacent conductor units, and low thermal resistance pp soft filling is filled between the support filling and the conductor units; the support filler is of an axisymmetric W-shaped structure and comprises two sunken side wings and a hollow part located at the lower part, the conductor unit is arranged in the two sunken side wings, and the optical unit is arranged in the hollow part; each conductor unit is provided with a copper wire metal shielding layer; the armor layer of the outer protection structure is formed by winding copper wires or non-magnetic steel wires. According to the utility model, a plurality of low electromagnetic loss materials and low thermal resistance coefficient materials are combined, the current-carrying capacity can be improved by about 20% compared with the traditional capacity-increasing cable structure, the requirement of high current-carrying capacity is met without increasing the radius of the submarine cable, and the cost advantage is obvious compared with the conventional scheme of increasing the cross section of the conductor, adopting pure copper and the like.

The invention relates to the technical field of direct-current contactors, and particularly provides a direct-current contactor capacitance-resistant contact assembly which comprises a static contact, a moving contact and a driving mechanism. The moving contact comprises a first moving contact piece and a second moving contact piece, a step is arranged on the inner side of the lower end of the static contact, and the lower end of the static contact and the step are in contact with the first moving contact piece and the second moving contact piece respectively; the step is provided with a first anti-sticking sheet, the second movable contact sheet is provided with a second anti-sticking sheet, and the first anti-sticking sheet and the second anti-sticking sheet are in contact to conduct a loop before the static contact and the movable contact are in contact so as to bear large current at the moment of connection; by changing the contact structure of the static contact and the moving contact and designing the anti-sticking sheet, the pre-charging loop function adopted in the prior art can be combined in the direct current contactor, the capacitive impact resistance function of the direct current contactor is achieved, and the product is simple in structural design, low in manufacturing cost and good in market application prospect.

The invention belongs to the technical field of cable manufacturing, and discloses a low-voltage cable and a manufacturing method thereof. The low-voltage cable comprises at least two wire cores, the at least two wire cores are mutually twisted, each wire core comprises a conductor, an insulating layer, a foaming buffer layer and a protective layer, the insulating layer wraps the conductor, the foaming buffer layer wraps the insulating layer, and air holes are formed in the foaming buffer layer; the protection layer wraps the foaming buffer layer and comprises an inner protection layer, a metal supporting net and an outer protection layer which are sequentially arranged from inside to outside. By arranging the conductors and the insulating layers, the basic functions of the cable can be realized. And the filling material is removed, and the at least two wire cores are mutually twisted, so that the heat dissipation performance is relatively good, and the current-carrying capacity is increased. When the cable is impacted or extruded, the foaming buffer layer with the air holes can effectively absorb external force and play a role in buffering, and the cable is light in weight and good in economical efficiency. When the cable is stretched, the inner protective layer, the metal supporting net and the outer protective layer act together, so that the tensile property is good.

The utility model discloses a slide circulating device which comprises a bottom plate, a left conveying mechanism, a right conveying mechanism, a front moving mechanism and a rear moving mechanism, the left conveying mechanism and the right conveying mechanism are arranged on the bottom plate in parallel, and the left conveying mechanism and the right conveying mechanism are both used for driving a bearing plate to move in the front-back direction; the front carrying mechanism is located in front of the left conveying mechanism and the right conveying mechanism, the rear carrying mechanism is located behind the left conveying mechanism and the right conveying mechanism, and the front carrying mechanism and the rear carrying mechanism are both used for transferring the bearing plate between the left conveying mechanism and the right conveying mechanism so that the bearing plate can move along a concentric-square-shaped track. And the linear conveying mechanism can bear and convey more bearing plates, so that treatment mechanisms can be arranged around the slide circulating device more conveniently, the slide bearing capacity is large, and the sample treatment efficiency is improved.

The invention belongs to the crossing field of biological medicine and material science, and particularly relates to traditional Chinese medicine acupoint application for treating children allergic dermatitis and a preparation method of the traditional Chinese medicine acupoint application. The preparation method comprises the following steps: compounding prepared mesoporous hollow SiO2 microspheres with traditional Chinese medicine liquid for treating allergic dermatitis, then coating the traditional Chinese medicine patch with the compounded mesoporous hollow SiO2 microspheres, covering the traditional Chinese medicine patch with prepared ammonium bicarbonate compounded resin, airing at room temperature, and curing through ultraviolet rays. The mesoporous hollow SiO2 microspheres can be used as a traditional Chinese medicine carrier, so that the drug loading capacity is improved, and meanwhile, drug volatilization is reduced. In addition, medicine on the traditional Chinese medicine patch is covered with ammonium bicarbonate composite resin, medicine volatilization is further reduced, ammonium bicarbonate can be gasified by the temperature of the human body, holes are generated, the medicine can permeate out, and the traditional Chinese medicine patch is obtained through the process and is large in medicine carrying capacity and high in volatility resistance.

The invention discloses a corrugated seven-segment cable core structure, a cable structure and a production process, the corrugated seven-segment cable core structure comprises a central conductor and seven tile-shaped separation strand block conductors, and the seven tile-shaped separation strand block conductors are twisted around the central conductor to form a cable core with a circular cross section; the center conductor and the tile-shaped separation strand block conductors are isolated through graphene insulation paper, and the adjacent tile-shaped separation strand block conductors are isolated through graphene insulation paper. According to the invention, the current transmission channel is obviously increased. Meanwhile, the current transmission capability of the cable is improved by adopting a central conductor and seven-segment corrugated split conductor structure; the insulation paper doped with the graphene is used in the cable conductor, and the graphene has extremely low relative permeability, so that the magnetic flux density in the conductor is reduced, the heat energy generated by the action of a magnetic field is reduced, and the current-carrying capacity and the working efficiency of the cable are improved; and meanwhile, the current can be more uniformly distributed in the conductor, the alternating-current resistance and phase loss of the cable core are reduced, and the transmission efficiency of the cable is enhanced.

The invention relates to an information display method and device, electronic equipment, a storage medium and a computer program product, and the method comprises the steps: displaying an information card in a video content display page, the information card comprising first associated information of a recommendation object and a first trigger control; if a trigger operation for a first trigger control in the current information card is not detected within a preset display duration, a next information card of the current information card is displayed, and the next information card comprises second associated information of the recommended object and a second trigger control; and in response to a trigger operation for the second trigger control, displaying an associated information page corresponding to the second associated information. By adopting the method, the diversity of information display is realized, and the flexibility of information display is improved.

The utility model relates to the technical field of hub bearings, in particular to a long-acting lubrication front hub bearing, which comprises an outer ring and an inner ring component, a raceway is arranged between the outer ring and the inner ring component, a steel ball is arranged in the raceway, and a retainer structure which is used for positioning the steel ball and is convenient for long-acting lubrication is arranged in the raceway. Compared with the prior art, the front hub bearing with the long-acting lubrication has the advantages that the size of the spherical surface of the large-diameter side ball cage is increased, so that a gap between two sides of the ball cage after balls are loaded is increased, when the steel balls rotate, enough lubricating grease is provided for long-term and effective lubrication through the gap, the number of the steel balls in each row is maximized in a limited space, and the service life of the bearing is prolonged. And therefore, the bearing capacity of the bearing is maximized, and long-acting lubrication can be realized.

The utility model discloses a fan foundation pre -buried cable pipe arrangement with ground source heat pump temperature control system, will be used for wind driven generator bottom low voltage cable wiring pre -buried cable pipe arrangement in the extended fan foundation middle pier middle part and fan foundation below, cooling pipe and heat exchange pipe are connected in proper order, and cooling pipe is arranged around pre -buried cable pipe in spiral shape, and vertical heat exchange pipe is vertically arranged at a certain depth of underground. Cooling pipe and heat exchange pipe all access ground source heat pump control box, and its power and data are connected to the box type transformer of wind driven generator through the cable in power supply and communication cable pipe. The utility model can pass through condensate liquid circulation, and the heat quantity of low voltage cable is conducted to the earth, and the problem that the cable laying quantity and interval are limited because of the cable pipe because temperature control design condition does not satisfy is solved.

The utility model discloses a material handling tractor suitable for narrow space, which comprises a bearing platform, a cavity is arranged in the bearing platform, a rotating device is arranged on one side in the cavity, two studs are arranged on the rotating device, a pushing mechanism is screwed on the studs in a threaded manner, and the pushing mechanism is arranged on the bearing platform. One end of the pushing mechanism penetrates through the side wall of the bearing table and extends to one side of the bearing table, a supporting plate is connected to one end of the pushing mechanism, folding frames are rotationally connected to the two sides of the supporting plate, one end of the folding frame on the same side is rotationally connected to one side of the bearing table, and a bearing plate is inserted into the upper end of the supporting plate. According to the utility model, adjustment can be carried out according to spaces of different specifications, the traffic capacity and adaptability of equipment in different environments are enhanced, the trouble that carrying tools are frequently replaced due to space limitation is avoided, flexible adjustment of the bearing capacity can be realized according to actual material carrying requirements, and the practicability and flexibility of the equipment are improved.

The powder receiving structure comprises a powder receiving box, and inserting parts matched with the bottom of the pulverizer are symmetrically arranged on the two sides of the upper end of the powder receiving box; the first protrusions are symmetrically arranged on the two sides of the powder receiving box body and extend outwards in the radial direction of the powder receiving box. The outer cylinder is sleeved on the periphery of the powder receiving box, and a channel for sleeving a powder receiving bag is arranged between the outer cylinder and the powder receiving box; on the basis that an original main body structure of the pulverizer is reserved, the powder receiving bag is fixed to the periphery of the powder receiving box through the outer cylinder, so that a material sample directly enters the powder receiving bag after being ground, the sample bearing capacity is increased, the sample transferring frequency is reduced, the sample transferring efficiency is improved, and the sample transferring efficiency is improved. And one-time bagging of large-volume samples is realized.

The invention discloses a cable core structure, a cable structure and a manufacturing process, the cable core structure comprises a middle core wire, the periphery of the middle core wire is sequentially wrapped with a plurality of core wire layers, each core wire layer is formed by twisting a plurality of core wires, and the middle core wire and the core wires in each core wire layer adopt polyimide enameled copper wires; every two adjacent core wire layers are isolated through an insulating water-blocking tape, and the outermost core wire layer is wrapped by a wrapping tape. According to the invention, the energy transmission capability and the current-carrying capacity of the cable are obviously enhanced; an insulating water-blocking tape segmentation technology is introduced into the cable core design, so that the production process is simplified, the skin effect is effectively relieved, and the alternating-current resistance of the cable is reduced; polyimide with excellent heat resistance, solvent resistance, refrigerant resistance and high insulating property and copper with lower density and lower cost are adopted as the core wire core material of the cable, so that the manufacturing and mounting cost of the cable is reduced, and the production process is simplified.

The present application relates to a stack-DCDC connector and a fuel cell comprising the same, the stack-DCDC connector comprising: a stack extension member and a DCDC extension member, the stack extension member and the DCDC extension member respectively extending from a stack and a DCDC; wherein a through hole is formed in the galvanic pile extension piece, and the galvanic pile extension piece is tightly attached to the DCDC extension piece; the DCDC extension piece is also provided with a fixing piece, and the fixing piece is arranged in the through hole of the galvanic pile extension piece in a penetrating manner and connects the galvanic pile extension piece with the DCDC extension piece, so that the galvanic pile is connected with the DCDC. The galvanic pile-DCDC connecting piece is large in current-carrying capacity, high in safety, high in reliability and high in fault tolerance of an assembly structure.

The invention relates to the technical field of overhead conductors, and discloses a measurable carbon fiber composite core soft aluminum molded wire stranded wire, which comprises a composite core and four groups of optical fibers arranged in the composite core, and the four groups of optical fibers in the composite core are uniformly distributed in four quadrants taking the center of the composite core as an original point. According to the testable carbon fiber composite core soft aluminum molded wire stranded wire, four groups of optical fibers are installed in the composite core, and when the composite core is damaged, the optical fibers are damaged, so that the integrity of the wire is tested before production, the integrity of the wire can be tested after production, and the integrity of the wire can be tested before installation; the integrity of the wire can be tested after installation, the integrity of the wire composite core before and after construction is guaranteed to a large extent, and compared with an existing conventional carbon fiber core, the core rod has the advantage that the integrity of the core rod can be detected before and after production and before and after construction.

The present invention relates to the field of electric power equipment, and in particular to a T-shaped busbar device at the bottom of an inverter cabinet in a prefabricated substation, which comprises a T-shaped busbar, a busbar fixing structure and a mounting bracket. The cross section of the T-shaped busbar is a T-shaped structure, which comprises a busbar vertical portion and a busbar horizontal portion connected to the busbar vertical portion, the busbar vertical portion is connected to at least one rectangular busbar, the busbar fixing structure comprises a T-shaped slot arranged thereon, the T-shaped busbar is inserted into the T-shaped slot, and the busbar fixing structure is fixed by a mounting bracket; the T-shaped busbar device of the present invention is simple and reliable to assemble, stable in operation and large in current carrying capacity; and also relates to an inverter cabinet of a prefabricated substation comprising the T-shaped busbar device, which has a simple structure, is simple and reliable to assemble, has high structural strength and large in current carrying capacity.

The utility model discloses a high load-bearing tunnel conveyer relates to kiln car technical field, including bottom plate and vertical plate, the two vertical plate is fixed on the both sides of bottom plate upper surface, the both sides of bottom plate upper part are provided with the baffle between the two vertical plate, the inside of baffle lower end is fixed sleeve joint with the rotary rod, and the rotary rod is fixed on the bottom plate upper part. The two ends of the rotating rod are rotationally connected with the corresponding vertical plates, grooves are formed in the two ends of the bottom plate, and first limiting mechanisms for limiting rotation of the rotating rod are arranged in the grooves. Side plates are fixedly arranged on the two sides of the lower surface of the bottom plate, a cross rod is rotationally arranged between the two ends of the two side plates in a sleeving mode, rotating wheels are fixedly connected to the two ends of the cross rod in a sleeving mode, and arc-shaped wear-resisting plates abut against the two sides of the rotating wheels. The kiln car wheel has high bearing performance and large bearing capacity, the abrasion part of the kiln car wheel can be independently replaced, the replacement cost can be reduced, and material waste is reduced.

The utility model relates to a novel high-power cable, which comprises a bare copper stranded conductor, a spiral stranded bare copper conductor and an outer insulating layer, and the spiral stranded bare copper conductor is spirally stranded on the bare copper stranded conductor. And the outer insulating layer is sleeved on the spiral stranded bare copper conductor. And a liquid cooling cavity with a spiral structure is formed between the outer insulating layer and the bare copper stranded conductor and is used for circulating cooling liquid. The outer insulating layer is supported by the spiral stranded bare copper conductor to form a stable liquid cooling hole with a spiral structure for circulation of cooling liquid, so that the cooling liquid can be uniformly cooled around the bare copper stranded conductor, the heat dissipation efficiency is high, and the heat dissipation effect is good; meanwhile, the spiral stranded bare copper conductor and the bare copper stranded conductor can be used as a conductor together, thereby increasing the sectional area of the conductor, increasing the current-carrying capacity of the conductor, and improving the power of the cable.

The application provides a high-precision underwater gravity and magnetic detection towed body, and belongs to the technical field of underwater detection equipment, which comprises a towed body frame, a towing assembly, a float assembly, a sealed cabin group, a magnetometer and a streamlined shell, the towed body frame comprises a plurality of ring frames, a plurality of beam bars and a reinforcing rib assembly, the towing assembly comprises a towing damper connected to the front end of the towed body frame, the float assembly is arranged longitudinally in the inner cavity of the towed body frame, the sealed cabin group comprises an energy cabin, a control cabin, an inertial navigation cabin, a gravity cabin and a magnetic cabin which are arranged longitudinally below the float assembly in the inner cavity of the towed body frame, the magnetometer is arranged at the rear end of the towed body frame, and the streamlined shell covers the outer periphery of the towed body frame; the towed body frame has a larger bearing space and bearing capacity, can meet the integrated installation of multiple devices, improves the effective payload ratio of the towed body and avoids excessively high manufacturing cost; the towing damper can buffer the towing force, and improves the stability and anti-interference capacity of the towed body.

The utility model discloses an electric steel plate goods shelf, which belongs to the technical field of steel plate goods shelves and comprises a goods shelf for supporting and storing steel plates, a plurality of movable trays arranged in the goods shelf in a sliding manner and used for bearing the steel plates, and a plurality of driving parts oppositely arranged on two sides of the goods shelf, the driving piece is used for driving the movable tray to move horizontally, the steel plate electric goods shelf further comprises an extending frame oppositely hinged to one side of the goods shelf, and the extending frame is used for expanding the moving range of the movable tray outwards. The two extending frames are oppositely hinged to one side of the goods shelf, when steel plates are stored or hoisted, the two extending frames can be unfolded, then the driving piece is controlled to drive the movable tray to automatically move out or retract, the supporting strength of the movable tray after the movable tray moves outwards is improved, and the supporting stability of the movable tray during hoisting of the steel plates is improved; the bearing capacity of the steel plates can be increased, and the storage capacity of each layer of the goods shelf is improved.

The application provides application of phenolic compounds and / or pharmaceutically acceptable salts thereof in preparation of drugs for treating breast cancer, a pharmaceutical composition, and relates to the technical field of biological medicines.The application of phenolic compounds and / or pharmaceutically acceptable salts thereof in preparation of drugs for treating breast cancer, wherein the phenolic compounds include compound 1 and / or compound 2.The compound 1 (arnebidin) and the compound 2 ((+)-(R)-de-O-methyllasiodiplodin) used in the application have good inhibiting effects on human triple-negative breast cancer MDA-MB-231 cell strains, the IC 50 value of the compound 1 is 1.16 muM, the IC 50 value of the compound 2 is 0.68 muM, which provides a new choice for developing a therapeutic drug for triple-negative breast cancer, and has a good application prospect in preparation of drugs for treating breast cancer, in particular, drugs for treating triple-negative breast cancer.

The utility model discloses a fireproof wire for an aerospace electrical system, which comprises a conductor, a protective layer and an insulating layer, the conductor is coated with the protective layer, and the protective layer is coated with the insulating layer; the conductor adopts a copper conductor plated with 27% nickel; the protective layer adopts a silicone rubber / glass fiber / mica composite mica tape; and the insulating layer adopts a fluorinated ethylene propylene polyimide composite belt. The components of the cable are all made of high-temperature-resistant materials, the requirements for small space, flexibility and space environment of aerospace are fully considered, it is ensured that the product is small in structure size, light in weight, good in flexibility and small in bending radius, and the requirement that the insulation resistance of the product is not smaller than 10000 ohms at the flame temperature (1100 + / -80) DEG C can be met, and a flame and vibration combined test can be conducted for 15 min.

The utility model discloses a probe structure, which belongs to the technical field of batteries and comprises a probe rod structure, an elastic telescopic structure, a probe guide structure and an end fixing structure. An elastic telescopic structure is movably arranged on the probe rod body structure, and the elastic telescopic structure is respectively connected with the probe guide structure and the probe rod body structure; the probe guide structure is movably connected with the probe rod body structure, the end part fixing structure is arranged at the end part of the probe rod body structure, and the probe guide structure is limited on the probe rod body structure by the end part fixing structure. According to the utility model, the parallelism of the end face of the probe and the contact surface of the battery is ensured by utilizing the rotation action of the probe rod body, and the contact area of the probe and the battery is increased. Meanwhile, the rotation action can effectively damage the insulation of the contact surface, and the contact resistance is further reduced. Therefore, the utility model solves the technical problems of how to improve the contact effect of the probe and the battery, prolong the service life of equipment and protect the battery as much as possible.

The invention discloses a large-current, flexible charging pile fast-charging external connection cable and a preparation method thereof. The outer layer of fluoroplastic of the cooling tube of the main core wire plays a role of heat resistance and insulation, and the inner layer of foamed polyethylene with a foaming degree of 65-85% not only increases the volume of the coolant but also plays an effective supporting role. More importantly, when preparing the hollow flexible conductor of the main core wire, due to the improved compressive strength of the cooling tube, after all the conductor wires are grouped and bundled, the cooling tube can be used as a support and then twisted to form a wire, which can effectively increase the softness of the cable. The cable is easier to install than the cable of a conventional cooling device, has a smaller bending radius and a larger current carrying capacity; in addition, a temperature-sensitive optical fiber is added during the molding of the hollow flexible conductor, and the coolant flow rate can be controlled according to the feedback temperature to keep the cable temperature constant; the above multiple effects greatly improve the charging speed of the cable, greatly improve the heating problem of the cable, effectively reduce the insulation aging speed, increase the service life of the cable, and make the product more flexible.

The utility model discloses a fireproof data cable, which comprises an elastic fireproof frame and a plurality of fireproof cables, a plurality of cable mounting holes are annularly arranged in the elastic fireproof frame, a first through hole is arranged in the middle of the elastic fireproof frame, and a second through hole is arranged between every two cable mounting holes. The cable mounting hole is provided with an opening communicated with the outer side of the elastic fireproof frame, the first through hole is round, and the second through hole is oval. The fireproof cable comprises a waterproof layer, a first fireproof layer, an oxygen isolation layer, a first buffer layer, a second fireproof layer and a cable core assembly which are sequentially arranged from outside to inside. The fireproof data cable is simple in structure and convenient to use, a plurality of cables can be installed together through the arrangement of the elastic fireproof frame, the current-carrying capacity of a line is increased, the cables are prevented from being damaged in a long-term vibration laying environment, and the waterproof layer, the first fireproof layer, the oxygen barrier layer, the first buffer layer and the second fireproof layer are also arranged, so that the fireproof data cable is convenient to use. And various protection performances of the cable are improved.

The utility model discloses a carbon fiber physical foaming coaxial cable, which comprises a conductor, an insulating layer, a semiconductor isolating layer, a shielding layer and a sheath layer, the insulating layer is wrapped outside the conductor, the semiconductor isolating layer is arranged between the insulating layer and the shielding layer, the sheath layer is wrapped outside the shielding layer, and the shielding layer is arranged between the insulating layer and the shielding layer. And the conductor, the insulating layer and the sheath layer are coaxially arranged. According to the carbon fiber physical foaming coaxial cable provided by the utility model, the semiconductor isolation layer is adopted, so that the coaxial cable has good shielding performance and good high-frequency noise elimination capability, and is not easily influenced by external electromagnetic waves during signal transmission.

The utility model relates to a large-current composite cable for a coal mine exploratory well, and belongs to the technical field of cables. According to the technical scheme, a liquid cooling pipe (2) is arranged in the center, a plurality of power wire cores (1) are arranged on the outer side of the liquid cooling pipe (2) in the circumferential direction, a monitoring wire (5) is arranged between any two adjacent power wire cores (1), cabling is carried out, an inner sheath (3) is extruded outside the cabling wire cores, a double-layer galvanized steel wire armor (4) is woven outside the inner sheath (3), and an outer sheath (6) is extruded outside the double-layer galvanized steel wire armor (4). The beneficial effects of the utility model are that the work of the liquid cooling pipe reduces the high temperature brought by the continuous work of the cable to a low temperature, thereby enabling the current-carrying capacity of the cable to be increased, and improving the work efficiency; even if the double-layer galvanized steel wire armoring is broken in the using process, the steel wire cannot pop out to cause the blocking of the well exploring process, and the cable is prevented from being damaged.

The utility model discloses a special-shaped copper bar and a power distribution cabinet, the special-shaped copper bar comprises a substrate and two oppositely arranged wing plates, and the two wing plates are respectively connected with two ends of the substrate; the end, away from the base plate, of each wing plate is bent to form a bent plate, and the two bent plates extend oppositely. A ventilation opening is defined by the base plate, the two wing plates and the two bent plates, and a clamping groove opening communicating with the ventilation opening is formed between the ends of the two bent plates. The special-shaped copper bar further comprises a plurality of bosses. According to the technical scheme of the utility model, by arranging the clamping groove opening, the branch copper bars can be conveniently lapped without opening holes during lapping, the production efficiency can be greatly improved, lapping can be carried out at any position of the clamping groove opening, and the future expansion requirements of users are facilitated; by arranging the ventilation openings, a ventilation space is formed in the special-shaped copper bar, and the current-carrying capacity of the unit sectional area can be improved; the surface area of the copper bar is increased by arranging the plurality of bosses, so that the surface heat dissipation of the copper bar can be improved, the capacitance reduction value of the copper bar is reduced, and the current-carrying capacity of the copper bar is improved.

The present invention discloses a drag chain type step heating device, comprising: a heating furnace body, a heating furnace chamber is formed in the heating furnace body, a heating device is arranged in the heating furnace chamber, a front furnace door and a rear furnace door are arranged on opposite sides of the heating furnace body, a drag chain device is fixedly arranged on the bottom plate of the heating furnace body, and the upper part thereof has a drag chain that can be driven to move back and forth, and the two ends of the drag chain are respectively located at the front furnace door and the rear furnace door, and at least one set of furnace lifting devices is arranged on the bottom plate of the heating furnace body below it; at least one workpiece sent into the heating furnace chamber and placed on the drag chain of the drag chain device is lifted, supported and lowered by the at least one set of furnace lifting devices, so as to cooperate with the reciprocating movement of the drag chain of the drag chain device, and the at least one workpiece is heated. Accordingly, the present invention has the advantages that the heating furnace body parts have a long service life and are easy to maintain, are suitable for the heat treatment of workpieces of various shapes and carried in tooling, have high heat treatment efficiency, low heat loss, and can achieve the beneficial effects of continuous production.

The utility model discloses a water floating type photovoltaic unit structure, which comprises a frame type floating body shaped like a Chinese character'mu ', a cross beam assembly, a plurality of photovoltaic assemblies and a plurality of corner bracket assemblies, and is characterized in that the cross beam assembly is fixed at the top of the frame type floating body shaped like the Chinese character'mu' through a plurality of bases; the plurality of photovoltaic assemblies are uniformly arranged, and each photovoltaic assembly is installed on the cross beam assembly through the corner bracket assembly. The whole body formed by the frame type floating body shaped like the Chinese character'mu ', the cross beam assembly and the corner bracket assemblies is used for supporting a plurality of photovoltaic assemblies, the structural stability is improved, external force such as stormy waves and water flow can be effectively resisted, the bearing capacity of the photovoltaic assemblies is large, and the solar energy conversion efficiency is improved.