69results about How to "Does not affect transportation" patented technology

A full-face vehicular detection method for a railway tunnel lining and a device aim to avoid collision of ground penetrating radar antennas with an overhead line system and a support of the overhead line system, the detection speed is a normal running speed of a train, the antennas in full-face detection are not interfered with each other, automatic positioning is realized during detection, only ground penetrating radar signals in a tunnel need to be acquired, and a penetrating radar signal processing and analyzing method in tunnel detection is modified. The vehicular device comprises a six-channel high-speed scanning penetrating radar, a positioning portion, a laser ranging portion and data acquisition and processing software. The pulse repetition frequency of the ground penetrating radar is 3MHz, the pulse repetition frequency of each channel is 500kHz, and the scanning rate is 976scan / s. The ground penetrating radar is provided with TEM (transverse electric and magnetic field) short-horn air coupled antennas, each group of antennas realizes a double-transmission and single-receiving function, and the center frequency of the antennas is 300MHz. The ground penetrating radar antennas are mounted outside passenger train connectors, radiation surfaces of the antennas respectively face to an arch crown, arch springing and side walls, and the full-face vehicular detection method and the device are used for automatically detecting to exam the railway tunnel lining.

The embodiment of the invention discloses an automatic overturning device. The automatic overturning device comprises a base assembly, a horizontal guide rail assembly, a movable air cylinder assembly, a jacking air cylinder assembly, a vertical guide rail assembly, a lifting air cylinder assembly, a rotary clamping claw air cylinder assembly, clamping claw assemblies and a mounting plate assembly. The base assembly is connected with the horizontal guide rail assembly and the movable air cylinder assembly. The jacking air cylinder assembly, the lifting air cylinder assembly and the rotary clamping claw air cylinder assembly are connected with the mounting plate assembly. The vertical guide rail assembly is connected with the horizontal guide rail assembly, the movable air cylinder assembly and the mounting plate assembly. The automatic overturning device can be used for turning over PCBs needing to be subjected to double-face machining and production, production efficiency can be improved, and labor intensity is lowered.

A seadling growing bowl is prepared from pulverized straw and / or stalk and adhesive (polyacrylamide) in weight ratio of 100:(0.2-1). Its advantages are low cost, and no pollution.

The invention provides a composite lithium cobalt oxide electrode and a fabrication method thereof, relating to the technology of a battery and aiming at solving the problem of poor performance of a high potential region of a conventional lithium cobalt oxide electrode. According to the summery of the technical scheme, the composite lithium cobalt oxide electrode comprises an ordinary lithium cobalt oxide electrode 1 and a lithium carbonate cladding layer 2, wherein the lithium carbonate cladding layer 2 is coated on the ordinary lithium cobalt oxide electrode 1 and deposited on the surface of the ordinary lithium cobalt oxide electrode 1 by a radio frequency magnetron sputtering process. The composite lithium cobalt oxide electrode has the advantages that the cladding layer is taken as an artificial solid electrolyte interface (SEI) membrane, the dissolution of a transition metal atom in an electrolyte and the decomposition of the electrolyte at a high potential are effectively suppressed, and a side reaction on the surface of the electrode is prevented from being generated, the structure of an active material is stabilized to a certain extent, the generation of a passivation layer on the surface of the electrode is slowed down, and the battery performance is improved. The lithium cobalt oxide electrode is applied to a lithium ion battery.

The invention provides a blue shark fishskin collagen periodontium guided regeneration nanofiber membrane and a preparing method thereof. The preparing method of the blue shark fishskin collagen periodontium guided regeneration nanofiber membrane includes the steps that blue shark fishskin collagen is prepared, and blue shark fishskin collagen or blue shark fishskin collagen and at least one of chitosan and PEO are used for carrying out electrostatic spinning to obtain the blue shark fishskin collagen periodontium guided regeneration nanofiber membrane. The blue shark fishskin collagen and chitosan in use are natural degradable materials and are excellent in biocompatibility and wide in source. The blue shark fishskin collagen periodontium guided regeneration nanofiber membrane prepared through the electrostatic spinning method can simulate the structure and functions of a natural cytoplasmic matrix well. The blue shark fishskin collagen periodontium guided regeneration nanofiber membrane is used for treating periodontium defects and can effectively promote cell adhesion, proliferation and differentiation and promote guided regeneration of periodontium.

The invention provides a direct measuring method for single-well crude oil gas yield. The method includes disposing an oil-water mixture produced within unit time t of a single well into a compressable closed container, and measuring volume V1 of the closed container before compression, volume V2 after compression, pressure P1 of gas in the closed container before compression, pressure P2 after compression, temperature T1 of the gas in the closed container before compression and temperature T2 after compression, wherein volume of the oil-water is V liquid, and volume flow of the oil-water mixture of the single well is V liquid / t. Through a volume compression method, volume flow of a gas phase and a liquid phase can be quickly and accurately acquired by utilizing difference of liquid and gas before and after compression so as to acquire mass flow of an oil phase, the gas phase and the liquid phase. Separation of the oil phase, the gas phase and the liquid phase is not needed in the process of measuring, so that the method is simple and convenient, and cold delivery of crude oil can be realized in the process of flow measuring.

The invention relates to a lithium titanate electrode plate and a lithium ion battery. The lithium titanate electrode plate comprises a current collector, a lithium titanate coating and a carbon coating, wherein the lithium titanate coating is stacked on the current collector, the carbon coating is stacked on the lithium titanate coating, and materials of the carbon coating include carbon materials, first binders and a first conductive agent. The electrolyte in the lithium ion battery reacts with the carbon coating under lower potential to form an SEI (solid electrolyte interface) film to separate active substances in the lithium titanate coating from the electrolyte, thus preventing battery ballooning caused by reaction between the active substances and the electrolyte due to overpotential; moreover, the carbon coating has certain lithium intercalation capacity, thus the transport of lithium ions is not affected; therefore, the lithium ion battery using the lithium titanate electrode plate has good cycle performance.

The invention belongs to the technical field of heat insulation, and discloses a heat insulation composite board and a preparation method thereof. The heat insulation composite board comprises a firstpanel layer and a heat insulation layer, and the heat insulation layer and the first panel layer are integrally formed; the first panel layer is a fiber reinforced resin-based composite sheet, a metal plate, a cement plate, a calcium silicate plate or a gypsum plate, and the heat insulation layer is a fiber reinforced aerogel felt. The preparation method comprises the following steps of: (1) flatly laying a fiber-reinforced aerogel felt; (2) paving the first panel layer on the upper surface of the fiber reinforced aerogel felt; and (3) carrying out hot press molding treatment to obtain the heat insulation composite board. The heat insulation composite board provided by the invention can implement a thermal insulation scheme on scenes like pipes, walls and box bodies, and has the advantages of convenient operation, simplicity, feasibility and the like.

The invention provides a method and a machine for calcining materials, comprising feeding equipment, a preheating chamber, a calcining chamber, a cooling chamber, discharging equipment and an exhaust emission system, wherein the calcining chamber is provided with 1-10 rows of peripheral burners, and the preheating chamber and the cooling chamber are transversely arranged. The preheating chamber and the cooling chamber are respectively divided into a high-temperature preheating chamber and a low-temperature preheating chamber as well as a high-temperature cooling chamber and a low-temperature cooling chamber by partition walls. The materials of the preheating chamber and the cooling chamber transversely move under the push of a pusher; higher-temperature air after the high-temperature cooling chamber cools products is used as combustion air; higher-temperature air after the low-temperature cooling chamber cools the products is used for preheating limestone materials in the preheating chamber. In the invention, heat energy is well utilized to save heat-exchange equipment and reduce equipment investments and operating costs, which reduces the discharge of greenhouse gases and is beneficial to environmental protection. The machinery is a detachable assembly, and all component equipment is manufactured separately and is assembled on site, thereby facilitating transportation, installation, overhauling and replacement and being beneficial to serialized production of calcining machinery.

The invention discloses a production method of a cold-chain logistics tracking tag based on a nanometre thermosensitive color-changing material. The method comprises the following steps that 1) a magnetic-response photonic crystal is prepared; 2) the magnetic-response photonic crystal prepared in step 1) is ultrasonically dispersed into a thermosensitive dispersion liquid; 3) the dispersion liquidin step 2) is sealed a thin container or in a polymer film; 4) in addition to a special magnetic field condition, the thermosensitive liquid film presents patterns and colors; 5) the thermosensitiveliquid film is put into a fridge to fix the patterns and colors, and a cold-chain temperature tag is obtained. The tag doesn't change color at sensitive temperatures, changes in color and pattern in excess of the sensitive temperature, and the change is irreversible. The cold-chain logistics tracking tag based on the nanometre thermosensitive color-changing material has the advantages of high sensitivity, high reliability, high anti-counterfeiting and high integration.

The invention discloses a climbing control method of a large inclination angle heading machine with an auxiliary climbing device. The used large inclination angle heading machine comprises a rack, an upper supporting part and the auxiliary climbing device. The climbing control method comprises the steps of climbing supporting, climbing auxiliary driving force providing, stepping moving and the like. According to the climbing control method of the large inclination angle heading machine with the auxiliary climbing device, a travelling hydraulic motor and an auxiliary driving hydraulic motor are controlled simultaneously to output power to provide larger driving force; at the time of stepping, the upper supporting part stretches out to support at a roadway top plate in a matched mode to enable the large inclination angle heading machine to be positioned steadily, then the auxiliary climbing device is lifted, and the auxiliary driving hydraulic motor is rotated reversely, so that a bearing base plate steps and move forward by a step pitch, and controlling is simple and rapid. Under the premise that slide-down of the heading machine is effectively prevented, the heading efficiency is improved, and the potential safety hazard is reduced. The climbing control method of the large inclination angle heading machine with the auxiliary climbing device is especially suitable for excavating and heading of a roadway with the large inclination angle being + / -25 degrees.

The invention discloses an anti-floating device suitable for a glass fiber reinforced plastic integrated pumping station. The pumping station comprises a station body, a pumping system and a control system, wherein the station body is composed of a glass fiber reinforced plastic barrel, an upper cover, a barrel body, a maintenance platform and an anti-floating base, wherein the anti-floating base is arranged on the bottom of the glass fiber reinforced plastic barrel, and comprises inner metal anti-floating devices, inner glass fiber reinforced plastic anti-floating devices and outer metal anti-floating devices; a reinforced concrete bottom board is arranged on the bottom surface of the anti-floating base, concrete secondary pouring is carried out on the periphery of the anti-floating base, and the periphery of a concrete secondary pouring body is fixed by a brick die; and embedded parts of the inner metal anti-floating devices are connected with the base of the fiber reinforced plastic barrel through bolts. According to the anti-floating device provided by the invention, by adding the inner metal anti-floating devices and the outer metal anti-floating devices as well as the inner glass fiber reinforced plastic anti-floating devices, and by matching with the concrete secondary grouting, the integral anti-floating capacity of the pumping station is improved, and the floating problem of the pumping station caused by water accumulated in a pit (or the underground water) is completely solved.

The invention discloses a high-space-utilization-rate goods shelf, a goods shelf set and a warehousing method, and belongs to the technical field of mechanical structures. The goods shelf comprises a goods shelf body which comprises stand columns, a bottom-layer frame and a top-layer frame. The number of the stand columns is four, and the stand columns are vertically arranged. The four corners of the bottom layer frame are fixedly connected with the bottoms of the stand columns respectively; the four corners of the top layer frame are fixedly connected with the tops of the stand columns respectively; the movable layer frames are horizontally and movably connected to the stand columns between the bottom layer frame and the top layer frame; and the lifting driving unit drives the movable shelf to do lifting motion. According to the goods shelf, by arranging the lifting driving units and the movable layer frames, the layer height of each movable layer frame can be flexibly adjusted according to space requirements when goods are placed, so that a single goods shelf can be provided with a plurality of movable layer frames for placing more goods, and the space utilization rate is effectively improved.

The invention relates to a floatation assisting device, in particular to a floatation assisting device used in cooperation with an amphibious armored vehicle on the water surface. The device is mainlyused for solving the technical problem that no self-rescue measure is available when the danger that water enters a vehicle body happens in the on-water use state of the amphibious armored vehicle. The floatation assisting device comprises even number sets of floatation assisting assemblies and a centralized control system. Each floatation assisting assembly is composed of a floating body system,a gas generation device, an inflation pipeline, a frame and installation accessories, each floating body system is installed in the corresponding frame and connected with the corresponding gas generation device through the corresponding inflation pipeline; and each frame is fixedly installed on the two sides of the vehicle body through the corresponding installation accessories. The control system can adopt various control modes of pure electric control, wired electric control, wireless remote control and the like and is commonly characterized in that the control system is mainly installed inthe vehicle and can be started through one key under the condition within a cabin, and buoyancy is provided for the vehicle. The device has the beneficial effects of being convenient and quick to operate, quick to expand, easy to maintain, safe, reliable and reusable, and the device can be widely applied to the amphibious armored vehicles in various models.

The invention discloses pre-dispersing masterbatch for an rubber accelerator ETU (N,N-ethylene thiourea) and a preparation method of the pre-dispersing masterbatch. The pre-dispersing masterbatch comprises components in parts by weight as follows: 72-82 parts of ETU, 8-16 parts of rubber carriers, 2-4 parts of EVA (ethylene vinyl acetate copolymer) resin, 1-3 parts of epoxidized methyl acetorieinoleate, 2-4 parts of saturated fatty acid zinc, 1-8 parts of naphthenic oil and 1-3 parts of color masterbatch. The pre-dispersing masterbatch for the rubber accelerator ETU is convenient to store, transport and weigh, the preparation method of the pre-dispersing masterbatch is simple and high in operability, original activity of ETU can be guaranteed, the problems that ETU is prone to agglomeration and is non-uniform in dispersion when directly put into rubber for mixing are solved, the problem of ETU dust pollution can be solved, and the health problem of an operator caused by inhalation of ETU dust is solved; besides, the masterbatch is colored, so that material identification and management are facilitated, mistaken charging caused by the operator during feeding for follow-up rubber product mixing is avoided, and the application of the color masterbatch has no influence on colors of follow-up prepared rubber products.

The invention discloses a machine-blast combined mining device for a fully-mechanized coal mining working face. The problems that an existing rock drilling device is uneven in stressing, influences the running stability, can not meet the machine-blast combined mining requirement and the like are solved. The machine-blast combined mining device comprises a supporting platform, a rock drilling device, a hydraulic support column, a motor with a brake and a hydraulic control device, wherein the supporting platform is assembled on a ledge and a pin rail of a scraper conveyer and driven by the motor with the brake to move in the length direction of the scraper conveyer. According to the machine-blast combined mining device for the fully-mechanized coal mining working face, an original telescopic cantilever single supporting structure is replaced with linkage-type double supporting arms, and by cooperating with telescoping of an angle adjusting hydraulic cylinder and a lifting hydraulic cylinder, steady vertical lifting of the rock drilling device is achieved; the machine-blast combined mining device is reasonable in design, compact in structure, balanced in stressing, convenient and fast to assemble and disassemble, flexible to move, precise in positioning and stable in operation, can safely and reliably cooperate with drilling and blasting work of a tunnel cross section, can meet the quick assembling, disassembling and moving requirements of machine-blast combined mining work, and significantly improves the production efficiency and the work quality of the fully-mechanized coal mining working face.

The invention discloses a precise positioning device for a light field unit module and an application method thereof. The precise positioning device comprises a movable pile and a fixed pile. The movable pile and the fixed pile are opposite to each other and are respectively fixed on the ground by anchor bolts. The precise positioning device of the present invention can accurately maintain the position of the light field unit module and does not affect the transportation of the light field unit module. In practical applications, flanges on both sides of a light field unit module transport vehicle are respectively fixed, and the movable pile can be folded, which makes the movement of the transport vehicle easier to adjust.

The invention discloses a gypsum shell low in retained strength and a preparing method of the gypsum shell. Gelatin is contained in the gypsum shell. The method comprises the steps that gypsum powderand filler are evenly mixed; after water is heated, the gelatin is added in the water, uniform mixing is conducted, and a transparent solution is obtained; gypsum powder and filler mixed powder is added in the transparent solution, and slurry is obtained; the slurry is poured into a die; after the slurry in the die is hardened, the die is dismounted, standing is conducted at the room temperature,and a wet gypsum shell is obtained; and the wet gypsum shell is naturally dried and roasted, and the gypsum shell low in retained strength is obtained. The gypsum shell is low in retained strength andeasy to clean, the preparing method is simple, and the production efficiency is high.

The invention relates to a multi-rotor straw crusher. The multi-rotor straw crusher includes a support and positioning device. The support and positioning device includes a supporting wheel base, a vertical supporting wheel and a horizontal supporting wheel respectively installed on the supporting wheel base. The vertical supporting wheel can rotate in the vertical plane, and the horizontal supporting wheel can rotate in the vertical plane. Rotating in a horizontal plane, the rim of the vertical supporting wheel presses against the bottom of the round flange to support the rotating barrel. The straw crusher can adjust the position of the horizontal supporting wheel so that the rim of the horizontal supporting wheel presses against the side of the round flange. Part, the rotation of the rotating barrel can drive the horizontal supporting wheel to rotate. The support positioning device is used to maintain stability when the rotating barrel rotates. The rotating barrel can always rotate around its own rotation center axis, which reduces the deflection of the rotating barrel when rotating, improves the stability of the rotating barrel, and reduces many costs. The vibration caused by the rotation of the rotating barrel during the operation of the rotor straw crusher reduces the working noise.

The surveying instrument support comprises a supporting platform and three supporting leg assemblies hinged to the bottom of the supporting platform, each supporting leg assembly is formed by movably assembling an upper rod and a ground supporting rod, the relative position between the upper rod and the ground supporting rod can be adjusted, and the supporting leg assemblies are hinged to the bottom of the supporting platform. Wherein the upper rod is hinged to the supporting platform; the ground supporting rod is divided into an adjusting section, a mounting section and a ground tying section, the adjusting section is movably assembled and connected with the upper rod, the mounting section is sleeved with a stabilizing assembly, and the ground tying section is located below the mounting section and has the main ground tying and fixing functions; the stabilizing assembly comprises a lower locking cap, an upper adjusting cap, a rubber belt, an assembling ring and a screw. The support can be suitable for terrains such as mire land and sand land where the support is prone to sinking, the outline and the weight of the support are almost not affected, and the support is conveniently improved on the basis of an existing support with the advantages of being easy to carry and transport and the like.

The invention discloses a scaffold clamp. The clamp comprises a panel, an inserting cylinder, a supporting crossbeam, and a U type opening for clamping; the U type opening for clamping is fixedly arranged at one side of the panel, the inserting cylinder is fixedly arranged at one end of the supporting crossbeam, and the supporting crossbeam and the panel are movably connected; the panel is provided with a U type opening in the middle part of the panel, and each of two corners of the U type opening is provided with a supporting aperture 1; the U type opening for clamping is welded by three pieces of steel plates, the cross section is U type, and the U type opening for clamping is fixedly arranged in the U type opening; the inserting cylinder is a hollow circular pipe; one end of one side of the supporting crossbeam is provided with two supporting apertures 2, the other end of the same side is fixedly provided with the inserting cylinder, the side surface between the supporting apertures 2 and the inserting cylinder is provided with several through apertures, and the two supporting apertures 2 of the supporting crossbeam are correspondingly and fixedly connected to the two supporting apertures 1 of the panel through bolts. The clamp can be established fast with safety and reliability.

The invention discloses a coal cutting visualization device of a coal mining machine. The device comprises a protection shell, a protection window frame and two camera components, wherein each camera component is provided with a water pipe bracket and a water pipe arranged on the water pipe bracket; the camera component comprises a mine camera and a camera shield sleeved on the outer part of the mine camera; a second rotation frame is arranged at the top of the camera shield; the side surface of the second rotation frame is connected with a first rotation frame through a bolt; a mine LED (light emitting diode) lamp is fixed on the side surface of the camera shield; by adjusting the angle of the mine camera, the mine camera in one camera component can observe the roller top at a cutting part of the coal mining machine, and the mine camera of the other camera component can observe the roller bottom at the cutting part of the coal mining machine; the angle of the miner camera can be adjusted at will for observation without influencing the work of the coal mining machine or the transportation of the coal; the coal cutting conditions by the roller at the cutting part of the coal mining machine can be clearly observed; the roller is effectively prevented from cutting a top plate and a bottom plate of the coal layer; and the coal cutting visualization device has a simple and compact structure, a small volume and high reliability and is easy to assemble and disassemble.

The invention discloses a silicon wafer overturning and conveying system and method, and belongs to the field of solar silicon wafer production. According to the silicon wafer overturning and conveying system, a feeding device comprises a feeding conveying track and a stacking mechanism, an overturning device comprises a first buffer track, an overturning mechanism and a second buffer track, and adischarging device comprises a discharging conveying track and a drainage mechanism; and the stacking mechanism is located between the feeding conveying track and the first buffer track, the overturning mechanism is located between the first buffer track and the second buffer track, and the drainage mechanism is arranged between the second buffer track and the discharging conveying track. Therefore, a plurality of silicon wafers can be stacked in a basket through the stacking mechanism and turned over in batches, the overturning mechanism can be allowed to turn over the basket at a low speedthrough the arrangement of the buffer tracks while transportation of the silicon wafers on the conveying tracks is not affected, so that the silicon wafer overturning and conveying efficiency is improved, and the safety of the silicon wafers in the overturning process is improved.

The invention discloses a packing plate pole group number automatic detection mechanism and a detection method thereof, and relates to the technical field of lead storage battery processing. The mechanism comprises a detection machine body, the bottom of the detection machine body is fixedly connected with a detection table, and the detection table is provided with multiple layers of pole groups; a pressing cylinder is fixedly connected above the detection machine body, a connecting plate is fixedly connected to a piston rod of the pressing cylinder, a pressing plate is fixedly connected below the connecting plate, a pressure sensor is fixedly connected between the connecting plate and the pressing plate, and a displacement sensor is fixedly connected to the cylinder; a control cabinet is fixedly connected to the detection machine body, a displayer is arranged on the control cabinet, the pressing air cylinder is connected with the control cabinet, and a number detection module is arranged in the control cabinet. The pressing air cylinder drives the pressing plate to descend, the displacement sensor detects the descending distance of the pressing plate, the number of the pole groups is calculated through the descending distance of the pressing plate, and therefore the problem that the number of the pole groups is difficult to detect is solved.

The invention discloses a stackable test tube transport device and a usage method thereof. The test tube transport device includes a bottom refrigeration cycle base, a refrigeration system is arrangedon the lower portion of the refrigeration cycle base, the upper portion of the refrigeration system is connected with a pump liquid pressure system, a liquid conveying channel is arranged at the topof the refrigeration system, test tube placing tanks are connected above the liquid conveying channel, a plurality of semi-opening test tube cabins are arranged on the upper portion of the test tube placing tanks, heat-conducive rubber is arranged in each test tube cabin, the test tube placing tanks can be stacked up with each other by series connection of the liquid conveying channel and a reflowchannel, a closed cover is arranged above the liquid conveying channel, and the liquid conveying channel is connected with the reflow channel through a circulating inner cabin inside the closed cover. The test tube transport device is reasonable in design, novel in concept, simple in structure and convenient to operate. The heat-conductive rubber is disposed to reduce and prevent shock, and the low temperature can be transmitted to the test tube. The multiple cycles of physiological saline can be completed through the reflow channel, and continuous cooling and conveying to the test tube can be realized by adopting a refrigerator and a press machine.

The invention discloses a Pd-based hierarchical pore mesopore-micropore TS-1 molecular sieve single crystal catalyst and a preparation method of thereof. The catalyst comprises a molecular sieve single crystal and Pd nanoparticles, the molecular sieve single crystal is an MFI type molecular sieve, is formed by stacking nanoscale small crystal grains, and has micropores and mesopores formed by stacking the nanoscale small crystal grains, and the Pd nanoparticles are uniformly loaded in mesoporous channels. The preparation method comprises the following steps: by taking a silicon dioxide pellet@porous carbon composite material as a hard template, impregnating the hard template with a structure-directing agent precursor solution to obtain a precursor, carrying out crystal transformation on the precursor by utilizing a steam-assisted crystallization method to obtain hierarchical pore TS-1 molecular sieve single crystals, and finally loading Pd by adopting an impregnation method. Pd particles in the catalyst are dispersed in mesoporous gaps stacked by molecular sieve nanocrystals, while micropores of the molecular sieve nanocrystals are completely reserved, the Pd nanoparticles are confined in mesoporous channels, and the Pd nanoparticles with high loading capacity, high dispersity, uniform distribution and small size are obtained.

The invention belongs to a device for facilitating a precast yard portal crane to pass through an intersection. The device comprises a picking fork structure and a movable coverage plate structure, wherein the picking fork structure is used for picking up the movable coverage plate which covers the upper end of a portal crane line placement groove to enable the guide line of the portal crane to successfully pass through the lower end of the movable coverage plate; the picking fork structure consists of a connecting bracket, permanent seats, a reinforcement plate, a picking fork and inclined reinforcement rods. The movable coverage plate structure is used for cooperating with the picking fork structure to open and close the upper end surface of the portal crane line placement groove and consists of a fixing bottom plate, a fixed axle lug, a hinge shaft and the movable coverage plate. According to the device, the portal crane can quickly pass through the intersection without stopping, and an iron plate automatically covers the portal crane line placement groove. The device has the advantages of simple and practical structure, labor and time saving, low manufacture cost and good use effect and safety.

The invention relates to the technical field of petroleum sand removal, and discloses an anti-blocking gravel filtering device for petroleum exploitation, which comprises: a box body, wherein the left side of the box body is communicated with a petroleum inlet pipeline, the right side of the box body is communicated with a petroleum outlet pipeline, and the vertical filter screen plate is arranged in the box body and divides the box body into a left part and a right part; a cleaning device which is used for regularly cleaning gravels on the vertical filter screen plate; a gravel storage box which is fixedly arranged below the box body and communicates with the bottom, located on the left side of the vertical filter screen plate, of the box body, wherein a door plate is arranged at the bottom in a sealed mode, and the gravel storage box is used for cleaning gravel in the gravel storage box; a baffle device, wherein when the gravel is collected, the gravel storage box is communicated with the box body through the baffle device, and after the gravel is collected, the gravel storage box is sealed and isolated from the box body; and a petroleum return device which is arranged between the lower part of the gravel storage box and the petroleum outlet pipeline. The gravel filtering device can prevent blockage, does not influence petroleum transportation, is convenient to operate, and saves time and labor.

The invention discloses a tool transport device in the aerial project. The device comprises a control box, the rear end face of the control box is provided with a fixing mechanism, the fixing mechanism is used for fixing the control box and can control the control box to rotate, a work space is arranged in the control box, a transmission block is arranged on the left side of the control box, and atransport mechanism is arranged in the work space. The device carries out fixing in a suction cup manner, mounting is convenient, through binding, the device is fixed to the belly of an aerial person, carrying is convenient, work is not affected, when the aerial person needs the tool temporarily, other workers can conveniently transport the tool to the position of the aerial person, work efficiency is greatly improved, work time of the aerial person is reduced, the possibility of danger happening is reduced, the device is provided with a buffer pad, and through the elastic belt transport manner, the work influence on the aerial worker is quite small.