40results about How to "Large diameter" patented technology

The invention relates to the technical field of copper pipe heat dissipation, in particular to a micro-channel heat dissipation device based on a copper pipe structure, which comprises a heat dissipation substrate, a copper pipe type heat dissipation channel and a liquid cooling circulation system, the copper pipe type heat dissipation channel is composed of a plurality of plastic copper pipes and replaces a traditional micro-channel or vapor chamber structure. The copper pipe is embedded or fixed in the heat dissipation substrate or on the surface of the heat dissipation substrate, cooling liquid circulates in the copper pipe, and efficient heat dissipation is achieved through the combined action of forced convection heat exchange and heat transfer; the copper pipe has good plasticity and can be subjected to three-dimensional bending forming according to heat source distribution and spatial layout, through the synergistic effect of forced convection and phase change heat transfer, the heat transfer efficiency is improved, particularly, extremely high local heat flow density can be coped, the chip is effectively prevented from being overheated, and the heat transfer efficiency is improved. The heat dissipation channel can be bent and formed in a three-dimensional space according to heat source distribution, accurate matching with the heat source form is achieved, limitation of traditional plane heat dissipation is broken through, and optimal configuration of heat dissipation capacity and heat flux density is achieved.

A device for measuring in-situ drilling rock hardness based on a high-pressure water pressure head comprises a hydraulic power system, a data acquisition system, a test probe and a push rod, the front end of the push rod is connected with the rear end of the test probe; the hydraulic power system comprises a manual hydraulic plunger pump; the manual hydraulic plunger pump is connected with the test probe through a reversing three-way valve; the data acquisition system comprises a data recorder, a displacement sensor and a pressure sensor, the displacement sensor and the pressure sensor are arranged on the manual hydraulic plunger pump, and the displacement sensor and the pressure sensor are connected with the data recorder through a signal receiver. The device is simple in structure, convenient to operate and capable of measuring the rock strength of different drill holes, different depths and different point positions so as to obtain the distribution condition of the roadway rock strength, the measuring result is close to the on-site rock mass, a water medium is used for pressure transmission, the measuring process is simple, convenient, environment-friendly and safe, errors in the processes of sampling, processing and the like are avoided, and the working efficiency is improved. And the measurement cost is reduced.

The utility model discloses autoclaved aerated concrete board mounting connecting piece, including the support rail of wall surface location: two concrete boards are arranged between two support rails, the surface of support rail is provided with a plurality of connecting components, the connecting component includes the connecting clamp plate sliding connection in the surface of support rail, the front side and the back of connecting clamp plate all are seted up with the welding position, the surface of support rail and the inner wall contact position of welding position are provided with the weld, the bottom of support rail is seted up with a plurality of second circular holes, the inner chamber of second circular hole is set up with the expansion sleeve, the expansion sleeve implants the inside of wall body. The utility model discloses the cooperation of support rail and expansion sleeve is used for providing the installation platform for connecting component, and under the cooperation of connecting component, the quick butt joint of two concrete boards is fixed, can reach the purpose that butt joint is simple and quick and connection is stable and reliable.

The application relates to a stone-plastic floor and an extrusion molding preparation method of the stone-plastic floor, and relates to the stone-plastic floor processing technical field.The stone-plastic floor comprises polyvinyl chloride resin, heavy calcium carbonate, calcium-zinc stabilizer, abrasive powder, internal lubricant, and external lubricant; and the preparation steps comprise feeding and mixing, extrusion, calendering, film covering, traction and cutting, and slotting; the low-temperature cold mixing realizes energy saving and consumption reduction, the stabilizer decomposition and lubricant volatilization problems caused by high temperature are avoided, the filler dispersion uniformity and interface bonding force are improved, the large-diameter specification extruder is adopted to improve the production efficiency, the material uniform plasticization is guaranteed by cooperating with the melting section cooling area, the processing stability and the finished product qualification rate are effectively improved, the stability, wear resistance and waterproofness of the stone-plastic floor are finally obviously improved, the service life is prolonged, and the stone-plastic floor has the advantages of environmental protection and production efficiency.

This invention relates to the field of carbon nanotube technology, specifically disclosing a high-viscosity carbon nanotube conductive paste and its preparation method. The raw materials for this high-viscosity carbon nanotube conductive paste include ultra-long single-walled carbon nanotubes, short-cut multi-walled carbon nanotubes, conductive carbon black, carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, polyacrylic acid, fluorinated silane coupling agent, γ-butyrolactone, and N-methylpyrrolidone. The high-viscosity carbon nanotube conductive paste provided by this invention achieves uniform dispersion, low volume resistivity, excellent anti-settling properties, and good coating processability of the carbon nanotube conductive paste under high solids content through the synergistic effect of the carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, the fluorinated silane coupling agent, and polyacrylic acid, combined with multi-stage grinding and high-pressure homogenization processes.

The utility model discloses a spraying system of a spraying tower, which relates to the waste gas treatment technology, and adopts the technical scheme that the spraying system comprises a tower body, a spraying pipe and a nozzle, the spraying pipe comprises a main pipe and a branch pipe, the nozzle is rotatably connected to the branch pipe, a rotating piece is arranged in the nozzle, and the nozzle is provided with an atomizing opening and a liquid flow opening. The spray head starts to rotate under the action of the rotating part, the treatment liquid in the spray head is sprayed out from the atomization opening and the liquid flow opening under the action of liquid pressure, the treatment liquid sprayed out from the liquid flow opening is large in particle diameter and can effectively combine pollutants with large diameters in waste gas, the treatment liquid sprayed out from the atomization opening is small in particle diameter, and the pollutants can be effectively combined with the pollutants with large diameters in the waste gas. The spray tower is simple in structure, large in dispersion area and longer in hang time, and can be fully combined with pollutants with smaller diameters in waste gas, and meanwhile, as the rotation of the spray head can provide centrifugal force for the treatment liquid leaving the spray head, the treatment liquid sprayed out of the atomization port and the liquid flow port can have wider coverage area, and the working efficiency of the spray tower is improved.

The present application relates to a kind of solid waste bulk pile composite foundation structure, and composite foundation structure is suitable for soft soil foundation;Solid waste bulk pile composite foundation structure includes: several bulk piles, in soft soil foundation It is distributed in rectangle or plum blossom shape, the surface of all bulk piles is wrapped with geogrid, and soft soil is filled between adjacent bulk piles;Hidden pile, hidden pile is arranged in bulk pile, the surface of hidden pile is wrapped with geogrid, and soft soil is filled between hidden pile and bulk pile;Connecting band, connect all bulk piles to form connecting grid layer, the surface of connecting band is wrapped with geogrid;The composition material of bulk pile and connecting band includes solid waste material and water-absorbing expansion resin.The present application also relates to a kind of construction method of solid waste bulk pile composite foundation structure.The present application is cooperated by bulk pile and geogrid, so that all bulk piles and soft soil between piles form composite foundation, realize the deep reinforcement of soft soil foundation, belong to soft soil foundation treatment technical field.

The utility model relates to the technical field of tomato sauce processing, in particular to a raw material quantitative weighing device for tomato sauce processing, which comprises a feeding mechanism, the feeding mechanism comprises a bypass pipe, a taper pipe is arranged on the inner surface of the bypass pipe, the inner surface of the bypass pipe is rotatably connected with the top end of the taper pipe, a movable arm is arranged on the inner side of the taper pipe, and the movable arm is movably connected with the bypass pipe. According to the raw material quantitative weighing device for tomato sauce processing, the first telescopic rod extends in the length direction, the middle position disc moves downwards in the taper pipes, the movable arms can gradually generate angle changes in the process, and therefore the bottom ends of the four taper pipes are expanded outwards; meanwhile, the diameter of the taper pipe is increased, for example, after the diameter of the taper pipe is increased by one stage, the amount of tomato sauce passing through the taper pipe per hour can be increased to 1.5 liters, the amount of tomato sauce passing through the taper pipe per hour can be increased to 2.0 liters, and so on.

The utility model provides a novel vertical axis ring wind wheel fan, and the fan includes wind wheel subassembly and guide rail support, wind wheel subassembly includes wind wheel frame, a plurality of inclined supports and blade, the inclined support is located on the wind wheel frame, the blade is located on the wind wheel frame, ring beam subassembly is connected with wind wheel frame subassembly rotation, and the wind wheel frame is separated from the tower column to make wind wheel subassembly lightweight and reduce the starting inertia of wind wheel frame, the blade is installed on the wind wheel frame, the blade quantity can increase at will but the weight increases not much, and the whole fan adopts the modularization design, makes the cost minimization, and the installation is convenient.

The utility model discloses a pure humidifier evaporation sheet mold structure. The pure humidifier evaporation sheet mold structure comprises a front mold and a rear mold, the front mold is provided with five rows of cooling water channels with the diameter of 8mm; and the rear mold is provided with four rows of cooling water channels with the diameter of 8mm. And the ejection structure adopts 12 round ejection rods with the diameter of 10mm on the outer ring and 6 round ejection rods with the diameter of 2mm on the inner ring. A two-stage exhaust groove structure is adopted, wherein 36 exhaust grooves are evenly distributed around the outer circle of an evaporation piece in the circumferential direction; a circle of circular air entraining groove with the depth of 0.3 mm and the width of 5 mm is formed in the periphery of the 36 exhaust grooves; a two-plate mold structure is adopted, one mold has two cavities, and each cavity is provided with a glue feeding structure of a one-point needle valve type hot runner. The formed product is large in diameter, thin in thickness, light in weight, clear and complete in micro-convex structure, free of deformation and good in flatness, and the high requirement of the pure humidifier for the evaporation piece is met.

The utility model discloses a gas-liquid separator and a corresponding compressed air system, and the gas-liquid separator comprises a primary gas-liquid separation column, a secondary gas-liquid separation column and a secondary gas-liquid separation column, the second-stage gas-liquid separation column is parallel to the first-stage gas-liquid separation column and is provided with a gas outlet pipeline; the liquid conveying pipe is communicated with the first-stage gas-liquid separation column and the second-stage gas-liquid separation column; the first gas conveying pipe is higher than the liquid conveying pipe and is communicated with the first-stage gas-liquid separation column and the second-stage gas-liquid separation column; the position of the second gas conveying pipe is higher than that of the first gas conveying pipe, and the first-stage gas-liquid separation column and the second-stage gas-liquid separation column are communicated; the first waterproof net is arranged in the first-stage gas-liquid separation column and is higher than the gas inlet pipeline; the second waterproof net is arranged in the second-stage gas-liquid separation column and is higher than the first gas conveying pipe and lower than the second gas conveying pipe; and the third waterproof net is arranged in the second-stage gas-liquid separation column and is higher than the second gas conveying pipe. The gas-liquid separation device has the advantages that the gas-liquid separation effect can be effectively achieved in time, and facility faults caused by the fact that liquid water rushes upwards along with air in gas equipment are avoided.

The utility model relates to the technical field of clothes hangers and discloses a clothes hanger convenient to install, which comprises a clothes airing table, a limiting clamping strip is fixedly connected to the top of the inner wall of the clothes airing table, an extending sliding table is slidably connected to the surface of the limiting clamping strip, and a first installation table is fixedly connected to the bottom of the extending sliding table. A limiting plate is fixedly connected to the inner wall of the clothes airing table, a first fixing column is fixedly connected to the inner wall of the first mounting table, a first movable sleeve is rotatably connected to the surface of the first fixing column, a reinforcing rod is fixedly connected to the left end of the first movable sleeve, a sliding groove is formed in the reinforcing rod, and a movable column is slidably connected to the interior of the sliding groove; the surface of the movable column is sleeved with a connecting rod. By arranging the extending sliding table, the diameter of the whole clothes airing table can be increased, the clothes airing table can be conveniently adjusted according to the number of aired clothes and the length of the clothes, meanwhile, after being used, the clothes airing table can be rapidly recycled into the clothes airing table, and placement work can be conveniently carried out.

This utility model relates to the field of lighting technology and discloses a flashlight fixture, including a flashlight holder, a flashlight body, a battery, a PCB board, an elastic component, an electrode cap assembly, an electrode bracket, and an electrode base assembly. The flashlight holder and the flashlight body are detachably connected, and the battery is disposed inside the flashlight body. The PCB board is disposed on the flashlight holder, and the electrode base assembly and electrode bracket are disposed on the PCB board. A mounting hole is formed between the electrode bracket and the PCB board. Parts of the electrode base assembly, the elastic component, and the electrode cap assembly are located within the mounting hole. The electrode cap assembly is fitted onto the electrode base assembly, and another part of the electrode cap assembly extends through the mounting hole into the flashlight body to electrically connect the electrode cap assembly and the battery. The elastic component abuts against the electrode cap assembly and the PCB board. By providing the electrode cap assembly, the contact area between the electrode base assembly and the battery can be increased, and the diameter of the electrode assembly can also be increased, thus increasing the upper limit of high current flow.

This invention belongs to the field of coalbed methane extraction, specifically relating to a well completion device and method for deepening vertical coalbed methane wells. It aims to solve the problems of small casing diameter in deepening old wells, which makes subsequent fracturing and pump installation difficult. The invention includes a bell-shaped inlet, a first short section, a small casing, a check valve, and a second short section. These components are sequentially connected by threads to form a tubular structure. Multiple circulation holes are provided on the first and second short sections. This invention eliminates the traditional hanger structure and adopts a double-layer packer fracturing structure, reducing the risk of sand burial. The construction method is scalable and has good application prospects.

The invention discloses a strong magnetic screwdriver bit extension rod with a telescopic unlocking function and belongs to the technical field of electric tools. The strong magnetic screwdriver bit extension rod specifically comprises an extension rod sleeve, a magnet and an extension rod handle, a tool head sleeve used for being connected with a tool head is arranged at the front end of the extension rod sleeve, a sliding limiting sleeve is arranged at the rear end of the extension rod sleeve, and the magnet is arranged at the front end of the extension rod handle; a partition structure or / and a magnetic conduction structure is also arranged between the magnet and the bottom of the tool head sleeve; and the connecting rod sleeve and the sliding limiting sleeve can synchronously and axially slide relative to the connecting rod handle and the magnet. In the process of replacing the screwdriver head, the magnet can be driven to the position away from the screwdriver head in a sliding mode and is kept at the position through the positioning structure, and therefore an operator can easily complete insertion and extraction of the screwdriver head with one hand. The sliding limiting sleeve is located at the rear end of the extension rod sleeve, the diameter of the magnet in the extension rod sleeve can be made to be large as much as possible, the magnetic attraction capacity is improved, the outer diameter of the front section of the extension rod sleeve can be reduced, and use in a small space is facilitated.

The application relates to the technical field of nuclear fuel assemblies, and particularly discloses a hexagonal fuel assembly for a heat supply reactor, wherein the upper end plane of an upper pressing spring is in contact with a pressing plate at the uppermost end of a hexagonal upper tube seat, the pressing plate is in contact with an upper grid plate of a reactor core, the upper pressing spring is sleeved outside a control rod guide tube, the lower end of the upper pressing spring is in abutment against a bottom plate of the hexagonal upper tube seat, and the upper pressing spring can axially press the hexagonal upper tube seat and components below the hexagonal upper tube seat; the lower end plane of a lower pressing spring is in contact with a pressing plate at the lowermost end of a hexagonal lower tube seat, the pressing plate is in contact with a lower grid plate of the reactor core, the lower pressing spring is sleeved outside the control rod guide tube, the upper end of the lower pressing spring is in abutment against a bottom plate of the hexagonal lower tube seat, and the lower pressing spring can axially support the hexagonal lower tube seat and components above the hexagonal lower tube seat. When an earthquake occurs, the vibration of the reactor core transmitted to the fuel assembly of the application can be absorbed by the upper pressing spring and the lower pressing spring, so that the anti-seismic performance of the whole assembly under the earthquake condition is effectively improved.

This utility model proposes an automated production system for electronic detonator ignition elements, including a base, lead wire, and lead wire reel. The lead wire reel is mounted on the base, and lead wire is wound on the lead wire reel. One end of the lead wire passes through the base and is slidably connected to it. A guide frame is fixedly mounted on the base, and a fixing frame is fixedly mounted on the top of the guide frame. A cylinder is fixedly mounted on the fixing frame, and a connecting rod is fixedly connected to the output end of the cylinder. By setting an annular coating box, continuous uneven rubber protrusions are added to the surface of the lead wire, and the diameter of the lead wire is increased. In this way, when passing through the clamping guide rollers, the lead wire between the two clamping guide rollers is fully clamped, thereby maintaining sufficient friction. This reduces the size of the equipment while ensuring sufficient friction, thus reducing the floor space cost of the factory.

The utility model relates to the technical field of multi-layer co-extrusion casting machines, and discloses a multi-layer co-extrusion casting machine for a high-temperature-resistant release film, which comprises a table body, an extruder is arranged above the table body, a first side plate and a second side plate are respectively mounted on two sides of the left end of the table body through bolts, and the first side plate and the second side plate are arranged on the table body through bolts. A cooling roller set is arranged between the inner sides of the second side plates, and a winding mechanism is arranged on the inner side of the left end of the second side plate. According to the multi-layer co-extrusion casting machine for the high-temperature-resistant release film, the cambered surface on the inner side of the cambered surface plate is extruded through the oval roller, so that the diameter of one end of the round roller is increased, and after the winding operation is finished, the short end of the second gear is rotated to the inner side of the through groove, so that the radius of the round roller is restored to the original shape, and compared with a traditional multi-layer co-extrusion casting machine for the high-temperature-resistant release film, the multi-layer co-extrusion casting machine for the high-temperature-resistant release film is improved. The multi-layer co-extrusion casting machine for the high-temperature-resistant release film has the advantage of assisting in discharging by changing the radius of the round roller, a film roll can be conveniently taken out from the outer side of the round roller by a worker, and the multi-layer co-extrusion casting machine for the high-temperature-resistant release film is convenient to use.

The invention belongs to the technical field of cement production, particularly relates to a fluctuating roller type feeding machine, and aims to solve the problem that an existing fluctuating roller type feeding machine cannot simultaneously guarantee the screening requirement of a feeding end and the conveying requirement of a discharging end. The device comprises a conveying mechanism, and the conveying mechanism comprises a plurality of fluctuation rollers arranged in the conveying direction; the maximum excircle diameter of the fluctuation roller is gradually reduced from the feeding end to the discharging end; the rotating speeds of the fluctuation rollers are the same. The fluctuating roller at the feeding end of the fluctuating roller type feeder is large in diameter, high in linear speed and strong in fluctuating effect, materials can be quickly pushed to roll and screen, layering of the materials with different particle sizes is efficiently achieved, and the feeding and screening requirements are met; the fluctuation roller at the discharging end is small in diameter, low in linear speed and weak in fluctuation effect, disordered disturbance caused by too high movement speed and violent fluctuation of materials can be avoided, and then the stable conveying flow direction of the materials is prevented from being damaged, so that smooth discharging can be guaranteed, meanwhile, secondary mixing of fine materials is reduced, and the screening precision is improved.

The utility model belongs to hot water equipment technical field discloses exhaust pipe and gas hot water device, a plurality of side exhaust holes are arranged to the circumferential side wall of tail pipe section, and a plurality of end exhaust holes are arranged on the smoke outlet end cover and are arranged along the axial penetration of tail pipe section, realize that the end of exhaust pipe uses axial exhaust and side exhaust simultaneously, not only make exhaust pipe can from the premise that the diameter is smaller installation hole is worn to the outside, need not reaming, improve the installation convenience of exhaust pipe, need not lengthen the length of exhaust pipe and increase the diameter of exhaust pipe, thereby realize under the premise that effectively control exhaust pipe size compactness, improve exhaust smoothness, and through limit S2

A concrete box girder structure reinforcing method and checking method, wherein the concrete box girder structure reinforcing method comprises the following steps: S1, roughening the original web of the original bridge box girder to obtain a roughened web, and entering S2; S2, arranging positioning lines on the roughened web according to intervals, drilling a plurality of anchoring holes according to the positioning lines, implanting a first shear connector into the corresponding anchoring hole through epoxy resin glue, and completing anchoring after the epoxy resin glue is solidified, and entering S3; S3, assembling a gold plate on the roughened side of the roughened web; S4, pouring UHPC in the pouring cavity to form a UHPC filling layer, and obtaining a reinforced concrete box girder structure. The reinforcing method can effectively improve the web bearing capacity and stiffness without increasing the total thickness of the web, and significantly reduce the reinforcement additional dead load. The checking method converts the reinforcement design process from experience judgment to quantitative analysis, solving the problem of relying on experience and repeated trial calculation in traditional reinforcement design.

A kind of sealing patching tool, it includes patching pipe assembly, expanding assembly and flow distributor, the patching pipe assembly includes patching pipe and sealing hanger, the patching pipe is matched with casing damage well casing specification Steel pipe, length is 8m-12m, both ends are all turned to sealing thread capable of being connected with sealing hanger;The sealing hanger is composed of hanger pipe, rubber sealing ring, metal sealing ring, the hanger pipe is a section of reducing steel pipe, the diameter of one end with sealing thread is same with the diameter of patching pipe, the diameter of one end with rubber sealing ring and metal sealing ring is installed is less than the diameter of patching pipe, two sets of sealing hangers are provided in each set of tool, are installed in the both ends of patching pipe by sealing thread respectively, the utility model sealing pressure is high, hanging is reliable, patching pipe does not produce flexure, patching section drift diameter is big, secondary extraction is easy.

The utility model belongs to the relevant technical field of submersible pumps, and particularly relates to an anti-falling device for a guide rod of a submersible pump. Comprising a mounting block, a through groove is formed in the rear portion of the left side of the mounting block, a sliding groove is formed in the left side of the mounting block, and a displacement groove connected with the through groove is formed in the inner wall of the rear side of the sliding groove; the metal net is fixedly installed on the front side of the installation block, one end of the metal net penetrates through the through groove and is fixedly connected with a metal belt, and one end of the metal belt is fixedly connected with an assembling assembly; the locking assembly is assembled in the sliding groove in a sliding mode, and the locking assembly is used for locking the metal net; the guide rod support is simple in structure and reasonable in design, after the bolts of the guide rod support are loosened, the metal net can limit the guide rod, the situation that follow-up fishing is needed after the guide rod falls into a pool is avoided, and maintenance by workers is more convenient.

The utility model relates to the technical field of machine manufacturing, and discloses a surface polishing device for a motor casing, which comprises a workbench, the rear side of the top of the workbench is fixedly connected with a positioning table, the front side of the top of the workbench is fixedly connected with an electric telescopic rod, and the inner wall of the front part of the positioning table is detachably provided with an adjusting mechanism; the adjusting mechanism comprises a bottom plate detachably installed on the inner wall of the front portion of the positioning table, the top of the bottom plate is fixedly connected with a supporting plate, the inner wall of the supporting plate is in threaded connection with a threaded rod, the bottom of the threaded rod is fixedly connected with a connecting column, and a disassembling assembly is arranged on the front portion of the positioning table. According to the utility model, when different motor casings need to be mounted, the threaded rod is rotated to drive the arc plate to move outwards, so that the overall diameter can be enlarged, the motor casing mounting device adapts to the motor casings of different models, the purpose of quick mounting is achieved, and the overall working efficiency is improved.

The utility model provides a kind of opposed leather cup piston type gas supply device, it is related to the technical field of automobile suspension, and it includes: piston, leather cup, leather cup compression ring, air inlet valve piece, connecting rod, piston pin, piston pin bushing, press pin and guide ring, piston front end is equipped with leather cup, leather cup front end is equipped with leather cup compression ring, leather cup compression ring front end is equipped with air inlet valve piece, press pin is located air inlet valve piece front end, and press pin is fixedly connected with piston, connecting rod front end is equipped with shaft hole, piston pin bushing is installed in shaft hole with interference, piston pin passes through piston pin bushing, piston pin is connected with piston with interference, guide ring is fixedly connected on the outside of piston, by setting connecting rod and piston pin hinged and connecting rod can be along piston pin axial floating structure, and the head of press pin and air inlet valve piece are spaced, solve the piston axial eccentricity caused by cam when gas supply device reciprocates and the uneven contact and friction between cylinder inner wall, further lead to the technical problem of eccentric wear.

The invention relates to a municipal engineering deep foundation pit supporting structure and a construction method, and relates to the technical field of geotechnical engineering and building construction, and the municipal engineering deep foundation pit supporting structure comprises a supporting pile assembly, a waterproof curtain assembly, a retention wall, an inner supporting assembly and an anchor cable assembly. The supporting pile, the waterproof curtain, the anchor cable, the inner support and the retention wall are integrated into an organic integral supporting system; the support piles and the occlusion waterproof curtains form a first'structure-waterproof 'integrated defense line; the anchor cables and the inner supports provide horizontal resistance in stages and areas according to the excavation depth, and a composite supporting mechanism of pulling first and then jacking and combining rigidity and softness is formed; according to the multi-fortification system, the overall stability and safety redundancy of deep foundation pit engineering are greatly improved, and various complex working conditions and accidental loads can be effectively dealt with.

The utility model discloses an expanded-head anchor rod hole measuring device which comprises a center rod and a sleeve, the diameter of the lower end of the sleeve is larger than that of the upper end of the sleeve, and the expanded-head anchor rod hole measuring device is characterized in that the center rod penetrates into the sleeve, scales are arranged at the upper end of the sleeve, movable arms are evenly hinged to the lower end of the sleeve, and the other ends of the movable arms extend out of the sleeve from openings in the side wall of the lower end of the sleeve. Contact balls are arranged at the ends, extending out of the sleeves, of the movable arms, bottom plates are fixedly connected to the bottoms of the sleeves, elastic connecting pieces are fixedly connected to the bottom plates, the other ends of the elastic connecting pieces are fixedly connected to the ends, close to the center rod, of the movable arms, the number of the elastic connecting pieces corresponds to that of the movable arms, and fastening bolts for locking the sleeves and the center rod are arranged at the upper ends of the sleeves. The expanded head anchor rod hole measuring device is small, exquisite, flexible, good in stability, labor-saving in operation and high in applicability. The end of the movable arm is provided with the contact ball which can prevent the end of the movable arm from being inserted into soil on the hole wall, and the hole diameter measurement accuracy is high.

The utility model provides a kind of beer machine, belong to liquor beverage drinking equipment technical field.It solves the problem of the bottom of the water tank of the prior art beer machine is easy to freeze.This beer machine, including machine body, and the water tank, motor and stirring vane being all arranged in machine body, the bottom of the water tank is rotatably connected with driven wheel and driven wheel is located in the inner chamber of water tank, the stirring vane is fixed on driven wheel, the motor is located in the inner chamber of water tank and is fixed in the bottom of water tank, motor shaft is connected with driving wheel, the driving wheel is opposite with the driven wheel and driving wheel can drive driven wheel to rotate by magnetism, the top of the driving wheel and the bottom of water tank have gap one, the top of the driving wheel has the top pin of convex and taper, the bottom of the water tank is provided with taper recess, the top pin is embedded in the recess, the taper of the top pin is less than the taper of recess.Solve the advantage that the bottom of the water tank of the prior art beer machine is easy to freeze.

The utility model relates to the technical field of mixing bins, and discloses a gravity mixing bin structure which comprises a bin body, a central mixing pipe, a plurality of peripheral mixing pipes and a bottom ventilation pipe, the central mixing pipe is vertically arranged in the center of the bin body, the peripheral mixing pipes are evenly distributed on the circumference with the center of the bin body as the circle center and the radius of the bin body as the diameter, and the bottom ventilation pipe is arranged in the center of the bin body. Comprising an annular main body and a plurality of branches connected with the main body, the annular main body is arranged around the peripheral side of the bin body, the ends, away from the main body, of all the branches are inserted into the bin body, and the bottom ventilation pipe is used for introducing gas into the bin body. Compared with a traditional wall-attached type, the gravity mixing bin structure has the advantages that accumulation and bridging phenomena of viscous materials can be effectively reduced, and the mixing effect on the viscous materials is improved.

The utility model discloses a kind of rust-proof bolts, it includes: screw cap is placed on the screw cap of bolt body, the screw cap covers the screw cap of bolt body from top to bottom, the screw cap is connected with the screw cap of bolt body, the cross-sectional shape of the screw cap is hexagonal;Circular ring is around the periphery of screw cap, the lower end surface of the circular ring is flush with the lower end surface of screw cap, and the circular ring is fixedly connected with screw cap;Screw rod cover is placed around the screw rod of bolt body, the upper end surface of the screw rod cover is connected with the lower end surface of circular ring, and the lower end surface of the screw rod cover is sealing surface;Cross groove is placed on the upper end surface of screw cap.The beneficial effects of the utility model are: not easy to be corroded and can be opened by more kinds of auxiliary tools.