739results about How to "Increase the length" patented technology

The embodiment of the utility model relates to the technical field of energy storage equipment, and provides a liquid-cooled bus and power equipment, the liquid-cooled bus comprises a first busbar and a second busbar, at least part of the first busbar is used for being installed in a cabinet body of the power equipment, and the second busbar is used for being installed in the cabinet body of the power equipment. The second busbars and the first busbars are arranged along the extension direction of the liquid-cooled bus, and the first busbars corresponding to the adjacent cabinet bodies are detachably connected through the second busbars. The first busbar and the second busbar extend along a first direction, and the larger surfaces of the first busbar and the second busbar are vertically arranged; the first busbar and / or the second busbar are / is internally provided with a cavity, and the cavity is used for containing a cooling medium. According to the invention, the first busbar and / or the second busbar are / is cooled in a heat transfer manner, so that the normal operation of the power equipment is ensured.

The invention provides a magnesium ingot pushing device for a cutting machine, which belongs to the technical field of pushing and comprises a supporting seat, an inclined plate, a clamping plate and an adjusting mechanism, the supporting seat is connected to the telescopic end of the second linear driver, the inclined plate is installed on the supporting seat, the clamping plates are hinged to the front side and the rear side of the supporting seat respectively, and the adjusting mechanism is used for driving the clamping plates to rotate oppositely; the adjusting mechanism comprises a telescopic push rod, the telescopic end of the telescopic push rod is connected with a horizontally-arranged half-frame-shaped supporting frame, a first connecting rod is arranged between each end of the supporting frame and the clamping plate, and the two ends of each first connecting rod are hinged to the end of the supporting frame and the middle position of the clamping plate respectively. A magnesium ingot can be clamped and positioned through the inclined plate and the clamping plate, on one hand, the stability of the magnesium ingot during cutting is guaranteed, on the other hand, the plane part and the inclined plane of the left end part of the magnesium ingot can be continuously cut, the cut length of the magnesium ingot is increased, and the utilization rate of the magnesium ingot is increased.

The utility model relates to a water-guided laser coupling device which comprises a laser source (1) and a coupling cavity (2), the laser source (1) is configured to generate laser (10) extending along a preset direction (x), and the coupling cavity (2) comprises an optical window mirror (21) arranged on a propagation path of the laser (10) for the laser (10) to pass through; the high-pressure water cavity (22) is formed in the side, away from the laser source (1), of the optical window mirror (21) in the preset direction (x), and the high-pressure water cavity (22) is configured to form a water jet (220) extending in the preset direction (x); the shielding gas generating mechanism (23) is arranged on the side, away from the laser source (1), of the high-pressure water cavity (22) in the preset direction (x) and is configured to generate layered spiral gas flow (230), the layered spiral gas flow (230) comprises first spiral gas flow (231) and second spiral gas flow (232), and the first spiral gas flow (231) is located on the radial inner side of the second spiral gas flow (232).

The invention belongs to the technical field of cranes, and discloses an energy-saving bridge crane and a using method thereof.The energy-saving bridge crane comprises two longitudinal bridge guide rails, a transverse bridge guide rail is movably installed at the position between the top ends of the two longitudinal bridge guide rails, and a lifting frame is movably installed at the bottom end of the transverse bridge guide rail; hoisting cables are installed at the positions, close to the four corners, of the bottom end of the hoisting frame, the hoisting cables are connected with an external cable crane, and a telescopic rod is fixedly installed in the middle of the bottom end of the hoisting frame. Through rotation of the lead screw and the cooperation effect between the movable base and the adjusting assemblies and between the movable base and the stabilizing assemblies, after the device completes hoisting of goods, the multiple stabilizing assemblies can be automatically close to one another by operating the lead screw, so that after the goods are hoisted again, the side edges of the goods can make contact with the multiple stabilizing assemblies, and the stability of the goods is improved. And through the limiting effect of the stabilizing assembly, shaking of goods during hoisting is reduced, potential safety hazards are reduced, and safety accidents are avoided.

The invention discloses a character string data read optimization method based on a B + tree and a learning index. A learning index generated based on a machine learning (ML) model focuses on integer data of a fixed size, but is lack of consideration for character strings of variable lengths and is poor in performance in character string data. In order to solve the problem, the invention provides a character string slicing method which can convert a character string with a variable length into an integer with a fixed size for prediction and extract a common prefix from a character string key to reduce a model fitting error. According to the method, the characteristics of character string data are fully considered, complex multi-dimensional linear regression is simplified into one-dimensional linear regression, and the model calculation overhead is reduced. Besides, the invention provides a self-adaptive strategy to select a proper index to manage the calculation cost, the method for dynamically selecting the index nodes can utilize the advantages of the two index types to the maximum extent, and the calculation overhead is effectively reduced while the index efficiency is ensured.

The present invention discloses a GIS sealing ring for nuclear power plants and its sealing structure, which belongs to the technical field of sealing rings, and comprises a soft ring body, a pressure-bearing external support structure is arranged in the soft ring body, an external support sealing structure is arranged on the inner edge and the outer edge of the soft ring body, and a joint surface cover structure is arranged on the upper and lower surfaces of the soft ring body. An abutment ring groove for plugging and matching with an abutment ring is arranged in the middle side of the tight pressure groove, and a second abutment ring is arranged in the tight pressure groove and located on both sides of the abutment ring groove; a limit ring is arranged on the outer side of the tight pressure groove, and the limit ring is inserted between the abutment ring and the base ring; a sealing groove is arranged in the tight pressure groove and located on the side of the limit ring, and the sealing ring is inserted into the sealing groove. Since the external support sealing structure and the inside of the soft ring body both use negative Poisson's ratio ring sheets as internal supports, after the nuts on the sealing structure are locked and the mounting bolts are installed, not only can the installation sealing characteristics be maintained, but also the matching strength of each combined section is increased under the pressure of the insulating gas in the trachea.

The invention provides a plant lactobacillus for promoting skeletal development in a growth period as well as application and a product of the plant lactobacillus, and belongs to the technical field of microorganisms. The invention provides a lactobacillus plantarum BL25 and a probiotic preparation thereof, the preservation number of the lactobacillus plantarum BL25 is CGMCC (China General Microbiological Culture Collection Center) No.33117, stachyose is adopted as prebiotics, and compared with other prebiotics, the lactobacillus plantarum BL25 can obviously promote the activity of the lactobacillus plantarum BL25. The plant lactobacillus BL25 and the probiotic preparation thereof have the effect of resisting the severe environment of gastrointestinal tracts, and can increase the length of femur and bone density, promote the development of a bone microstructure, improve bone metabolism, increase osteogenesis markers and reduce osteoclast markers, so that the skeletal development in the life growth period is promoted.

The utility model discloses a battery pack and an electric device, and relates to the technical field of batteries. According to the battery pack, the capacity of the battery pack can be improved under the condition that the overall strength of the battery pack is improved. The battery pack comprises a box body, a battery module and a bearing assembly, wherein a containing cavity is defined by the box body; the bearing assembly is matched with the battery module, the battery module is installed in the bearing assembly, and the bearing assembly is fixed in the containing cavity so that the battery module can be installed in the containing cavity. The battery pack provided by the utility model is used for providing electric energy for an electric device.

The invention provides a ceiling fan and a fan lamp, and belongs to the technical field of household appliances. The ceiling fan comprises a shell, a fan assembly and a plurality of air guide pieces. The fan assembly is located in the shell, and the air guide piece surrounds the fan assembly. The air guide piece is provided with a first air guide part, in a reference plane perpendicular to the central axis of the annular opening, the connecting lines between the head end and the central axis of the annular opening and between the tail end of the first air guide part and the central axis of the annular opening are set as a first reference line and a second reference line correspondingly, and the second reference line and the first reference line are sequentially arranged in the circumferential direction in the rotating direction of the fan assembly. The deflection direction of the first flow guide part is close to the direction of airflow flowing out of the fan assembly, the airflow can be prevented from violently colliding with the first flow guide part, and therefore noise generated by the airflow can be reduced. According to the ceiling fan, the first air guide part is arc-shaped, and the concave surface of the first air guide part is opposite to the fan assembly, so that the air outlet of the ceiling fan is more uniform, and the airflow can be blown to a farther distance.

The invention discloses a flexible support for mountainous region photovoltaic construction, and relates to the technical field of photovoltaic construction, the flexible support comprises a plurality of groups of fixing piles poured on a mountainous region, steel nooses are arranged among the plurality of groups of fixing piles, photovoltaic fixing plates are laid on the steel nooses, and bearing cables are further arranged among the plurality of groups of fixing piles. A square pyramid is arranged on the lower surface of the photovoltaic fixing plate, the bottom end of the square pyramid is arranged on the bearing cable, a windproof cable is longitudinally arranged below the bearing cable and penetrates through the square pyramid, windproof piles poured on a mountain land are arranged at the two ends of the windproof cable, and damping mechanisms are arranged in the windproof piles. The bracket is provided with the windproof cable and the damping mechanism, and the energy of up-down vibration of the windproof cable is absorbed through mechanical movement in strong wind weather, so that the amplitude of up-down vibration of the steel noose and the bearing cable can be reduced, the stability of the steel noose and the bearing cable is improved, and the wind-resistant effect is good.

The invention relates to the technical field of heat exchangers, and particularly discloses an energy-saving plate-fin heat exchanger which comprises a box body, a first fin plate group, a second fin plate group, a partition plate and a mounting table, a first edge sealing plate and a second edge sealing plate are arranged on the partition plate, a first driving mechanism is arranged on the first edge sealing plate, a second driving mechanism is arranged on the second edge sealing plate, and the mounting table is arranged on the box body. A waste heat utilization mechanism is arranged in the mounting table; the first driving mechanism can adjust the length of the heated channel, and the second driving mechanism can adjust the length of the heating channel, so that the flow velocity of the heated liquid and the heating liquid is increased, the turbulence degree of the heated liquid can be enhanced by increasing the flow velocity, a thermal boundary layer is destroyed, the heat transfer coefficient is increased, and the heating efficiency is improved. Therefore, the heating effect on the heated liquid is improved, the liquid outlet temperature of the heated liquid can be controlled more accurately, the waste heat utilization mechanism can further utilize waste heat carried by the heating liquid output from the box body, and the energy utilization rate is increased.

The invention discloses a foliar fertilizer for improving the toughness of expanded leaves and long leaves of economic forest crops and a preparation method and an application method of the foliar fertilizer, and relates to the technical field of foliar fertilizers, the foliar fertilizer for improving the toughness of expanded leaves and long leaves of economic forest crops comprises the following components: a nitrogen-phosphorus-potassium compound according to a weight ratio of 15-5-20; the weight concentration of the boron-sugar alcohol compound is 0.05 percent to 0.1 percent; the weight concentration of the zinc-amino acid compound is 0.02 percent to 0.08 percent; the weight concentration of the chitosan nano particles is 0.01 percent to 0.05 percent; the weight concentration of the humic acid compound is 0.1 to 0.2 percent; the invention also provides a preparation method and an application method of the foliar fertilizer for improving the toughness of leaf expansion and leaf growth of economic forest crops. According to the foliar fertilizer disclosed by the invention, through scientific combination of nutritional ingredients, the broadening degree, length and toughness of economic forest crop leaves are remarkably improved, the photosynthesis efficiency is enhanced, the leaves are not easy to damage, and the overall yield and quality of crops are improved.

The invention discloses a variable-sampling-rate current waveform and electromagnetic response acquisition system and a control method. The variable-sampling-rate current waveform and electromagnetic response acquisition system comprises nine parts, namely a sensor circuit, a signal conditioning circuit, an analog-to-digital conversion circuit, an analog-to-digital isolation circuit, a main control circuit, a synchronous circuit, a storage circuit, a man-machine interaction circuit and a power management module. The voltage signal is firstly processed by the signal conditioning circuit to meet the sampling requirement of the 24-bit ADC module, and then the ADC module converts an analog voltage signal into a binary digital signal based on a reference voltage; and under the action of a clock signal of the synchronization module, the converted digital signal is firstly transmitted to an external SRAM (Static Random Access Memory) through DMA (Direct Memory Access) to be cached and stored. Interference of digital circuits such as a single-chip microcomputer and crosstalk of analog signals among different channels are effectively reduced, and the problems that an acquisition system is single in sampling rate, high in short-circuit noise level, large in shallow detection blind area and low in urban underground space complex target electromagnetic detection precision are solved.

The telescopic adjustable water turbine runner runner runner cone comprises an upper crown, a lower ring and blades, a runner cone body is integrally formed at the bottom of the upper crown, the upper end of a sleeve is fixedly connected with the lower end of the runner cone body and communicates with a cavity, an air supplementing cavity is formed in an air supplementing piece, and the upper end of the air supplementing piece is open; a plurality of water leakage holes communicated with the air supply cavity are formed in the lower end of the air supply part, an air guide cavity is further formed in the air supply part and located on the peripheral side of the air supply cavity, a plurality of air leakage holes for communicating the air supply cavity with the air guide cavity are formed in the peripheral side close to the lower end of the air supply part, the upper end of the air supply part is slidably connected with the sleeve, and the air supply cavity is communicated with the sleeve through the opening; and the lower end of the gas conveying pipe is sequentially arranged in the runner cone and the sleeve in a penetrating mode and communicates with the gas guide cavity. The problems that when water flow passes through the runner cone, the runner cone possibly generates vortexes at some parts, the pressure in a vortex area is low, cavitation is easily caused, and the surface of the runner cone is eroded are solved.

The invention discloses an application of a substance for regulating and controlling protein coding gene expression of flammulina velutipes. The technical problem to be solved by the invention is how to regulate and control agronomic characters (such as improvement of sporocarp yield, stipe length, hypha branching distance and / or growth rate) of flammulina velutipes. The invention provides an application of a substance for regulating and controlling the expression of a protein coding gene of flammulina velutipes in regulating and controlling agronomic traits of flammulina velutipes. The protein is a protein with an amino acid sequence as shown in a sequence 2. Experiments prove that the encoding gene of the flammulina velutipes protein is an important regulation and control gene for growth and development of flammulina velutipes and affects mycelial growth, mycelial density, stipe length and sporocarp yield of flammulina velutipes. The method can be used for breeding good varieties of the flammulina velutipes, and the flammulina velutipes with long stems and high yield can be conveniently screened.

The utility model belongs to the technical field of cup covers, and particularly relates to a double-drinking cup cover which comprises a cover body and a turning cover which are movably connected, a locking piece for controlling the cover body and the turning cover to be relatively fixed is movably arranged on the cover body, a drinking seat is arranged on the cover body, the upper end of the drinking seat extends to form an annular convex edge, and a direct drinking groove is formed by surrounding of the annular convex edge. A water passing hole is formed in the bottom of the direct drinking groove, a sucking hole is formed in the annular protruding edge, a straw hole communicated with the sucking hole is formed in the cover body, and the straw hole and the sucking hole are vertically formed, axially staggered and connected through a transversely-extending transition hole. And a sealing piece for sealing the direct drinking groove and the sucking hole is arranged on the turning cover. The utility model aims to provide the double-drinking cup cover which is simple in structure and convenient for a user to use.

A thread segmented cutting numerical control machining method comprises the following steps that a machine tool obtains thread parameters; determining a plurality of thread cutting points in the length direction of the thread from the thread starting point to the thread ending point, wherein the thread cutting points divide the thread into a plurality of sections; the cycle number of thread turning of the machine tool turning tool is determined; the machine tool spindle is controlled to drive the workpiece to rotate, the machine tool turning tool is controlled to start turning threads from the starting point of the threads, every time the machine tool turning tool moves to a thread cutting point, the tool is lifted for cutting once, the machine tool turning tool feeds from the thread cutting point, the machine tool turning tool continues turning the next section of threads until the thread end point is reached, the tool is retracted, and the machine tool turning tool finishes turning the threads once; and then the machine tool turning tool repeats the turning action for multiple times until the determined cycle number is reached, and thread machining is completed. Sectional cutting of thread machining can be conveniently and rapidly achieved, the thread machining efficiency is improved, scrap iron is small in length, scrap iron is prevented from winding a machine tool spindle chuck, and iron pins are prevented from scratching the inner circle and the outer circle of a workpiece.

The invention discloses an application of a low phosphorus stress resistant gene GmLNG5 of a plant. The research on the soybean GmLNG5 gene shows that the GmLNG5 positively regulates the soybean root growth and phosphorus efficiency, is mainly expressed in the soybean root, and enhances the expression under the stress of low phosphorus; the GmLNG5 regulates and controls the growth of the soybean root system by mediating the longitudinal extension of root tip cells, the overexpression of the GmLNG5 gene increases the cell lengths of the extension region and the mature region of the soybean in-vitro hair root tip, the biomass of the in-vitro hair root and the phosphorus content, the plant growth is promoted under low phosphorus stress, and the GmLNG5 gene can be used for cultivating low-phosphorus-resistant plant varieties. The GmLNG5 gene provided by the invention plays an important role in promoting soybean root growth and improving soybean phosphorus efficiency.

The utility model discloses tunnel blasting drilling auxiliary positioning equipment which comprises a U-shaped frame, supporting legs are installed at the bottom of the U-shaped frame, a protractor is installed at the upper end of the U-shaped frame through a supporting plate, the front side wall of the protractor is connected with an angle measuring scale in a rotating mode, the upper end of the U-shaped frame is connected with a vertical measuring scale in a horizontal sliding mode, and the vertical measuring scale is connected with a horizontal sliding rod. The upper end of the U-shaped frame is symmetrically connected with two connecting rods in a telescopic and sliding mode, and the upper ends of the two connecting rods are jointly and fixedly connected with a horizontal measuring scale. The tunnel blasting drill hole positioning device is reasonable in structural design, can perform auxiliary positioning on tunnel blasting drill holes, can perform telescopic adjustment, can perform accurate positioning on drill holes at different positions, and guarantees subsequent drilling and blasting quality.

The utility model relates to a denitration rotational flow vortex street ammonia-air mixer, which comprises a main pipeline, a vortex street ammonia-air mixer, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, one end of the ammonia pipeline is connected with the side wall of the main pipeline and is close to the air input end of the main pipeline; the vortex street turbulent flow columns are arranged in the main pipeline and are sequentially arranged at intervals in the axial direction of the main pipeline, the section of each vortex street turbulent flow column is in a V shape, the vertex angle of each vortex street turbulent flow column faces the air input end of the main pipeline, a swirl vane is arranged between every two adjacent vortex street turbulent flow columns, and the swirl vanes can rotate around the axis of the main pipeline; and the cyclone blades are driven to rotate through airflow. Ammonia gas and air can be fully mixed in a short distance, the mixed gas passes through the Karman vortex street generated by the last vortex street turbulent flow column and continues to use the flowing space in the airflow pipeline connected with the rear end of the main pipeline, and the mixing distance of the ammonia gas and the air is prolonged on the premise that the length of the main pipeline is not increased; the length of the whole mixer is shortened while the mixing effect is ensured.

The invention discloses a preparation method of a water-based coating for antistatic treatment of a flexible PVC (polyvinyl chloride) material, belongs to the technical field of antistatic coating processing, and aims to solve the technical problem that the flexibility, conductivity and conductive stability of a water-based coating film in the prior art need to be further improved. The preparation method comprises the following steps: adding polyacrylate into a polyurethane emulsion, stirring, adding a sodium hydroxide solution into a reaction system, adjusting the pH value of the system to 8-9, raising the temperature of the reaction system to 70-80 DEG C, carrying out heat preservation and stirring for 90-120 minutes, and carrying out post-treatment to obtain composite polyurethane; the graphene oxide is modified and then mixed with the polyacrylate reinforced composite polyurethane material, so that the antistatic property, flexibility and adhesiveness of the water-based paint are effectively improved, the water-based paint has good washing migration resistance, and the conductive stability of the water-based paint is improved.

The utility model belongs to the technical field of electric window openers, and particularly relates to a novel electric chain type window opener which comprises a shell, an opening is formed in one side of the shell in a penetrating mode, and a guide column is arranged in the shell. The chain is arranged in the shell, and one end of the chain is fixed to the guide column; the chain wheel is rotationally arranged in the shell, the chain wheel and the guide column are oppositely arranged in the length direction of the shell at a preset distance, and after the end, away from the guide column, of the chain extends by a preset length in the direction close to the chain wheel, the chain is bent, returns and surrounds the peripheral side, away from the chain wheel, of the guide column, and the chain extends out of the opening after being meshed with the chain wheel. The end, extending out of the opening, of the chain is fixed to a window. And the power mechanism is arranged in the shell and used for driving the chain wheel to rotate. According to the window opener, the size of the shell of the window opener can be set to be small, so that the window opener can be suitable for application scenes with small installation space, and the applicability of the window opener is improved.

The utility model relates to the technical field of batteries, in particular to a battery and terminal equipment. The battery comprises a battery cell, and a tab is arranged at the end part of the battery cell; the protection plate is arranged at the end part of the battery cell, the thickness direction of the protection plate is the same as the length direction of the battery cell, the protection plate is provided with a device surface on which a first device is arranged, and the distance between the first device and the device surface is a first height; the connecting piece comprises a connecting section and a bending section which are connected in sequence, the connecting section is connected with one side of the protection plate, at least part of the bending section is located on the outer side of the device face, the distance between the part, located on the outer side of the device face, of the bending section and the device face is a second height, and the second height is smaller than or equal to the first height; the projection of the part, located on the outer side of the device surface, of the bent section on the device surface does not coincide with the projection of the first device on the device surface, and the tab is at least partially connected with the bent section. The battery can adopt a relatively large battery cell, so that a relatively large battery capacity can be realized.

The utility model provides a multifunctional oven which is used for kitchen equipment and comprises an oven body, the oven body comprises an oven body, an oven door is movably installed on the side of the oven body, a control knob is fixedly installed on one side of the oven door, a supporting assembly is movably installed at the bottom of the oven body and comprises a fixing rod, and the fixing rod is fixedly installed on the oven door. A limiting rod is movably installed at one end of the fixing rod, and a fixing column is fixed to the limiting rod. When the steaming and baking device is not used, the fixing assembly is shrunk in the open groove, the inner wall of the steaming and baking cavity is in a smooth state, the inner wall of the steaming and baking cavity is convenient to clean, and when the steaming and baking device is used, a movable plate and a limiting block are exposed outwards to support the side of the baking tray; during moving, the clamping beads are matched with the clamping holes in different positions to prolong the exposed length of the movable plate, and the side edges of baking trays with different widths are supported for use.

The invention discloses a main arch ring design method for rapid construction of a large-span cast-in-cantilever arch bridge. The main arch ring design method comprises the following steps: establishing a macroscopic finite element model according to arch bridge information; a local finite element model is established for the steel-concrete main arch ring, load simulation is conducted on the steel-concrete main arch ring, and arch ring information is determined; obtaining an anti-overturning coefficient of the arch bridge according to the macroscopic finite element model, and obtaining an anti-seismic property value of the arch bridge by utilizing anti-seismic simulation; acquiring disease early warning information according to the load simulation and the anti-seismic simulation, and implementing a disease early warning strategy; load simulation is conducted according to the steel-concrete main arch ring structure through the finite element model, stiffening connection steel plate information and steel hole information of the optimal arch ring strategy are obtained, the load bearing capacity, the anti-seismic performance and the anti-overturning performance of the arch bridge are improved, the self weight of the main arch ring is effectively reduced, arch ring steel bars are connected through the stiffening connection steel plates, and the safety of the arch bridge is improved. Factory-like rapid and high-precision installation of the bottom face is achieved, and the working efficiency and the engineering safety can be greatly improved through whole-section hoisting.

A multi-layer curing oven and spraying production line based on chain wheel type full-chain forward conveying comprises a rack and a conveying chain set arranged in an up-down winding mode, the conveying chain set comprises a first conveying chain and a second conveying chain which are symmetrically arranged, and the first conveying chain and the second conveying chain are installed on the rack through respective chain wheels respectively. A plurality of trays are arranged between the first conveying chain and the second conveying chain, the trays are connected to the chains of the corresponding conveying chains through the two sides, the trays are provided with guide wheel assemblies, and the rack is provided with a supporting and guiding structure used for supporting and guiding the guide wheel assemblies to operate. The tray supports and guides the guide wheel assembly through the supporting and guiding structure to keep forward installation and connection so as to achieve forward conveying of workpieces. According to the multilayer curing oven, the workpieces can be conveyed by the whole chain in the forward direction in a forward direction placing mode.

The utility model discloses an aviation aluminum machining milling machine with a scrap cleaning structure, and relates to the field of aviation part machining, the aviation aluminum machining milling machine comprises a workbench and a scrap falling plate arranged in the workbench, the two ends of the top end of the workbench are fixedly connected with longitudinal guide frames, and the bottom ends of the longitudinal guide frames are slidably connected with transverse guide frames; a first pneumatic telescopic rod is slidably connected to the bottom end of the transverse guide frame, a milling cutter body is mounted at the bottom end of the first pneumatic telescopic rod through a bolt, and a scrap cleaning mechanism for reducing scrap residues is arranged in the mounting box. According to the aviation aluminum machining milling machine with the scrap cleaning structure, chippings generated during milling cutter machining can be flushed out through cooling water, the milling cutter is cooled, the flushed chippings are stacked on the surface of the scrap falling plate, a cleaning brush can clean residual scraps on the surface of the scrap falling plate and enable the chippings to fall into the workbench through hole grooves in the surface of the scrap falling plate, and the chippings can be cleaned conveniently. And cleaning and collecting of the scraps are achieved.

The utility model provides a steel pipe erecting device for a construction site, and relates to the technical field of steel pipe storage. The steel pipe erecting device on the construction site comprises a base, an adjusting component used for placing different steel pipes and an adjusting component used for controlling the placing number. And the adjusting part comprises adjusting grooves formed in the two sides of the top of the base correspondingly, adjusting blocks connected with the adjusting grooves, a two-way screw rod connected with the adjusting blocks, a motor connected with one end of the two-way screw rod and a transverse plate connected with the tops of the adjusting blocks. The problems that in the prior art, although steel pipes with different lengths can be fixed, the length can be adjusted only by repeatedly screwing a plurality of fixing bolts during adjustment, adjustment is relatively tedious, the bolts are prone to being damaged, the transverse position where the steel pipes are placed is relatively fixed, the number of the placed steel pipes is limited, and therefore practicability is insufficient are solved.

The invention discloses a film winding machine which comprises a film covering mechanism and a film sealing mechanism. The film covering mechanism comprises a rotating frame and a film supply assembly, the rotating frame can drive the film supply assembly to do circular motion on the horizontal plane so as to wind a film onto stacked goods, and the film supply assembly comprises a film extending assembly used for stretching the film. The film extending assembly comprises a first rubber coating roller and a second rubber coating roller which are arranged in parallel, a limiting space allowing a film to penetrate through is reserved between the first rubber coating roller and the second rubber coating roller, and a rotating speed difference exists between the first rubber coating roller and the second rubber coating roller. The film cutting assembly comprises a heating block capable of pressing at least two layers of films on the abutting plate and a heating wire used for cutting off the films. It is ensured that the end of the thin film is attached to the inner layer thin film all the time after the thin film is wound, the phenomenon that the thin film flies around and influences the packaging effect of goods is avoided, and the packaging efficiency of stacked goods is improved.

The invention relates to a welding bottom plate and a welding method. The welding bottom plate comprises a base, a boss and a lifting table, the boss is arranged on one side of the base in the thickness direction and extends in the first direction, the boss is provided with a first end, a second end and a bearing face, the first end and the second end are oppositely arranged in the first direction, the bearing face is connected between the first end and the second end, and the bearing face is used for bearing a welding strip; and in the thickness direction of the base, compared with the first end and the second end, the bearing surface is sunken towards one side close to the base. The lifting table is arranged on the base in an extending mode in the second direction and used for supporting the battery piece, and the lifting table is provided with a working position and can move in the third direction so as to be close to or away from the working position; under the condition that the lifting table is located at the working position, the battery piece abuts against the welding strip. Wherein the first direction, the second direction and the third direction intersect pairwise.