76results about How to "Reduce production and installation costs" patented technology

The application relates to the technical field of intelligent trash bins, in particular to a trash bag component and an intelligent trash bin. The trash bag component includes a storage body and a cover; the storage body is provided with a first through hole and a circular channel arranged around the first through hole and used for storing a trash bag; the cover is provided with a second through hole corresponding to the first through hole; an opening of the circular channel is covered; a gap is provided between the cover and one sidewall of the circular channel so as to form a trash bag outlet. The trash bag component with these settings has the advantages that the trash bag component can be applied to intelligent trash bins so as to conveniently implement the function of full-automatic laying and packing of trash bags, thereby further increasing trash bin automation level and intelligence level; damage to trash bags during production, storage and transport of the trash bags is effectively avoided; trash bag changing is simple so that efficiency can be improved; the trash bag component is of integrate structure, is convenient to assemble and helps reduce production and mounting costs.

The invention discloses a fully dry photoelectric composite cable, which comprises a cable core, a sheath assembly wrapping the cable core and a water blocking layer arranged between the cable core and the sheath assembly, the cable core includes an optical cable unit, The data communication cable unit and the power line unit are provided with a metal strengthening member in the cable core, and the optical cable unit, the data communication cable unit and the power line unit are surrounded by the metal strengthening member. In the present invention, several cable units for transmitting signals are placed together, which can simultaneously transmit optical signals and electrical signals, and can effectively save pipeline space and reduce production and installation costs; Expandable water-blocking yarn and water-blocking tape replace traditional ointment, which is not only clean and environmentally friendly, but also convenient for construction.

The invention discloses an extra-large-span cross-section-variable pre-stressed normally placed evacuating quadrangular pyramid space grid and a manufacturing method thereof, wherein pre-stressed space trusses (2) are arranged at about 1 / 3 parts of two sides of a normally placed evacuating cross-section-variable bi-layer grid (1) along an x direction and a y direction, and the bottom chord of each pre-stressed space truss (2) is provided with a steel cable steering support rack (5); the upper end of a support node (6) of each pre-stressed space truss (2) is provided with a steel cable supportsteel frame (7), and the outer side of the upper part of a frame column (3) is provided with a horizontal stay bar (8); and one end of the pre-stressed steel cable (4) slopes downwards to the span centre around the top end of the steel cable support steel frame (7) and the other end of the pre-stressed steel cable (4) is fixed on the lower part of the frame column (3) after bypassing a fixed pulley on the end part of the horizontal stay bar (8). The extra-large-span cross-section-variable pre-stressed normally placed evacuating quadrangular pyramid space grid disclosed by the invention is applied to square or rectangular extra-large-span (L is greater than or equal to 120m and smaller than or equal to 180m) roofs and has the advantages of low steel consumption, simple structure, low manufacturing and installing cost, excellent mechanical property, and the like.

The invention provides an air-conditioning heat exchanger using a mixed refrigerant and an air conditioner. The air-conditioning heat exchanger comprises a finned tube exchanger, a collecting pipe, at least two paths of shunting pipes, and a shunt for connecting the collecting pipe with each shunting pipe, wherein the collecting pipe is connected with an inlet end of the shunt; a shunting outlet of the shunt is connected with one end of the each shunting pipe respectively; the other end of the each shunting pipe is connected with a pipeline on the finned tube exchanger; and the air-conditioning heat exchanger is characterized in that: each shunting pipe is vertically arranged and has the same inner diameter of 2.0 to 3.5mm. The mixed refrigerant is a mixture of an HFC-32 (high-frequency current) refrigerant and an HFO-1234ze (high frequency oscillator) or HFO-1234yf refrigerant, and the HFC-32 refrigerant accounts for at least 50 percent of total weight of the mixed refrigerant. The problem of temperature glide of the mixed refrigerant brought by non-azeotropy can be solved. In addition, the heat exchange efficiency and heating capacity of the air-conditioning heat exchanger can be improved.

The invention relates to a high inclination-angle undulating flange belt conveyor capable of conveying roller compacted concrete, and the conveyor comprises an upper horizontal section, a lower horizontal section and an inclined section, wherein the upper horizontal section is connected with the inclined section through adopting a convex arc sectional rack, and the lower horizontal section is connected with the inclined section through adopting a concave arc sectional rack; the high inclination-angle undulating flange belt conveyor is characterized in that: the upper horizontal section is provided with a forced beating device (21); and the improved beating device has good beating effect, so the defects of more concrete adhesion and size loss are solved.

The invention relates to a regenerative natural gas boiler energy-saving denitration integrated system which comprises a boiler body, a type I pipe combustion chamber, two groups of regenerative natural gas burners and a condenser. A regenerative high-temperature air combustion technology and an SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) combined denitration technology are adopted, a denitration reducer is injected inside the combustion chamber, and the reducer control valve and reversing valve are subjected to interlocking action control, so that the energy-saving effect of the system disclosed by the invention is outstanding, and the fuel is effectively saved; the environment-friendly effect is outstanding, and the nitric oxide emission of the flue gas is reduced by 50% or higher; the cost is obviously saved, the overall structure of the system is compact, the production and installation cost is reduced, and due to the combined denitration technology, the catalyst cost in the operating process is reduced.

The invention relates to a building-integrated solar cell module curtain wall and roof which comprise included angle type solar cell module bodies 1 and wall fireproof thermal insulation boards 2 or a steel framework; the included angle type solar cell module bodies 1 are formed by right-angle vertical-edge frameworks 11, solar cell panels 12, junction boxes 13 and pressing strips 14. The slant slope theta of the solar cell panels is set as forty degrees to eighty degrees and specifically needs to be determined according to the latitude of the location where the solar cell panels are installed so as to improve the solar absorptivity and the photoelectric conversion efficiency; the problem that the solar absorptivity and the photoelectric conversion efficiency are low due to the fact that traditional solar cell modules are directly installed on outer walls is solved; the included angle type solar cell module bodies 1 are veneers of the curtain wall and the roof, the two plates are combined organically, the structure is simple, a triangle supporting frame is not needed, and the dead weight is low; the building-integrated solar cell module curtain wall and roof are completely integrated with a building, the manufacturing and installation cost is lowered, and the application range of the solar cell panels is enlarged further.

The invention relates to a turn structure of aluminium alloy doors and windows, comprising a circular tube aluminium alloy section. Two adjusted and spliced aluminium alloy sections are arranged at two sides of the circular tube aluminium alloy section by jointing the circular tube aluminium alloy section, an adjustable mounting included angle is arranged between the two adjusted and spliced aluminium alloy sections, the mounting included angle is formed after the two adjusted and spliced aluminium alloy sections respectively take an axial lead of the circular tube aluminium alloy section as an axis and rotate along a cylindrical surface of the circular tube aluminium alloy section. By adopting the turn structure, the category of the turn section is greatly reduced. The turn structure is particularly suitable for profiled turn doors and windows and irregular turn doors and windows of which the turn angles is not easy to confirm in a project.

The invention belongs to the technical field of building assembly type concrete components, and relates to an assembly type prefabricated high-strength concrete floor tile system and a construction method thereof. The assembly type prefabricated high-strength concrete floor tile system comprises a front surface layer and a structure stress layer which is integrally cast with the front surface layer and formed by back concrete reinforcing ribs; a prefabricated high-strength concrete floor tile is formed by the steps that a special mold is adopted, a stressed steel bar protection layer support structure is arranged in the middle of a rib part of the mold, stressed steel bars are installed, a steel plate net is laid, high-strength anti-crack fiber concrete is poured, and demolding and curingare performed to obtain the floor tile, and rigid adjustable supports are adopted as the floor tile supporting stress components to assemble the floor tiles into the whole floor. By means of factory prefabrication, construction site installation, high bearing capacity, convenience in pipeline installation, maintenance and replacement and secondary decoration transformation, great environment-friendly and energy-saving effects can be achieved, the self-weight of the floor is reduced while the production cost is reduced, the safety and reliability of a building are improved, and the service lifeof the building is prolonged.

The invention discloses a logistics trolley track commutation retracking device which comprises a commutation track and a retracking device frame. The retracking device frame is provided with a lead screw and a motor. A belt drive unit is connected with the lead screw and the motor. A cross beam is fixed below the retracking device frame. A composite bearing is matched with a guide sliding chute in the cross beam. A common linear bearing is matched with an unthreaded shaft on the other side of the cross beam. The composite bearing and the common linear bearing are fixed to the commutation track. The lead screw is matched with a driving nut on the commutation track to form a lead screw drive mechanism. By means of the logistics trolley track commutation retracking device, the problems that the retracking device is inconvenient to produce, install and maintain, high in cost, short in bearing life, high in operation noise and unsteady to move are solved. The retracking device has the advantages that the composite bearing is long in service life, and no maintenance work at the later period is required. The installation process is simple, operation is steady, noise is small, and movement is steady and reliable.

The invention discloses a disk type solar heat collection utilization system. The disk type solar heat collection utilization system comprises a disk type solar condenser, a solar heat collector, a sun tracking control device, a stand column and a heat energy conversion utilizing device. The disk type solar condenser is partially supported by a first condenser support and a second condenser support. The solar heat collector is fixed to the focus point of the disk type solar condenser through a first heat collector support and a second heat collector support. The first condenser support is communicated with the two ends of the first heat collector support. The second condenser support is communicated with the two ends of the second heat collector support. The stand column is fixed the ground. A first conveying channel and a second conveying channel are arranged in the stand column. The first heat collector support, the first condenser support and the first conveying channel form a conveying channel of cold work mediums. The second heat collector support, the second condenser support and the second conveying channel form a conveying channel of hot work mediums. The disk type solar heat collection utilization system is simple in structure, low in cost and high in reliability, and large-scale disk type solar heat utilization is made possible.

The invention discloses a frequency converter and an air conditioner. The frequency converter (100) comprises a cabinet body, an air cooling device and a plurality of air duct partition plates (16), wherein the plurality of air duct partition plates (16) separate a cabinet cavity into a plurality of module chambers for installing different modules respectively, the air duct partition plates (16) of the module chambers are provided with respective module chamber air inlets and module chamber air outlets, a circulating air flow passage flowing through the module chamber air inlets and the modulechamber air outlets is formed in the cabinet cavity, and the air cooling device is arranged in the circulating air flow passage. The frequency converter disclosed by the invention realizes the circulating heat dissipation in the cabinet cavity by setting the circulating air flow passage in the cabinet cavity through adopting the air passage partition plates, and is conductive to improving the heat dissipation effect of the frequency converter, reducing the working noise thereof and saving the production and installation costs.

The invention relates to a thread-off proof clamp for a flexible bell socket cast-iron drain pipe, and belongs to a device used for construction cast-iron drain pipelines. By means of the thread-off proof clamp for the flexible bell socket cast-iron drain pipe, the technical problems in the prior cast-iron drain pipes that water leakage is caused by the falling off of pipe conjections, loading capacity is low and high-rise buildings cannot be used are solved. According to the technical scheme, the thread-off proof clamp for the flexible bell socket cast-iron drain pipe comprises a locking bolt, a nut and a thread-off proof clamp, wherein the thread-off proof clamp is composed of at least two single-piece clamps, the single-piece clamp is a circular arc groove-type body with fastening teeth, the fastening teeth are arranged at the upper end and the lower end of the inner side of the circular arc groove-type body, fastening clamping lugs are arranged at two sides of the circular arc groove-type body, and a fixed clamping lug is arranged in the middle portion of the outer side of the circular arc groove-type body. The thread-off proof clamp for the flexible bell socket cast-iron drain pipe has the advantages that the structure is simple, the size is compact, the installation is easy, the installation space is saved, the construction cost is reduced and the safety of the pipe conjections is improved.

The invention discloses a refrigerator which comprises a bottom foot mounting structure. A bottom foot is arranged to be in the form of a sleeve. The two opposite sides of the top edge of the sleeve are respectively provided with a clamping hook which faces outwards. A bottom foot base which protrudes downwards is arranged at the mounting position, corresponding to the bottom foot, of a refrigerator base plate. The bottom foot is mounted on the bottom foot base in a sleeved mode. Clamping grooves are formed in the refrigerator base plate and located in the positions corresponding to the clamping hooks on the two sides of the bottom foot. The bottom foot is correspondingly and fixedly clamped in the clamping grooves through the clamping hooks on the two sides, and then the bottom foot is fixed to the bottom foot base in a sleeved mode. According to the refrigerator, the assembly process of a refrigerator base can be completed quickly, so that time and labor are saved.

The invention discloses a combined bridge with open pore plate formwork and a construction method of the combined bridge. The combined bridge comprises a combined beam, the open pore plate formwork and a concrete bridge deck, wherein the open pore plate formwork comprises a fold-shaped steel plate and an open pore plate connecting part, the fold-shaped steel plate and the combined beam are welded,the open pore plate connecting part is welded to the fold-shaped steel plate, and multiple open pores are formed in the open pore plate connecting part; the concrete bridge deck comprises a concreteslab and steel bars, the multiple steel bars are cast into the concrete slab and penetrate through the open pores, and the steel bars and the open pore plate connecting part are welded. In the combined bridge, the open pore plate formwork and the upper wing edge of the combined beam are welded and stressed together, and therefore the longitudinal bearing capacity of the bridge is enhanced.

The invention relates to a material distributor, which comprises a cabinet, a self-sucking pump mounted on the bottom of cabinet and driven by motor, a solid charging hopper through with the charging pipe of self-sucking pump and mounted on the top surface of cabinet, a mixed crush device connected to self-sucking pump via channel and driven by motor, and two control valves are mounted on the outlet of solid charging hopper and the inlet of self-sucking pump. The invention can used in the areas of pharmacy, foodstuff, drinking, cosmetic and paper making which need high effect mixing of solid-liquid and liquid-liquid, and it can apply variable low and high viscosity product, while the attained product has stable quality. And it has the functions of mixing, diffusing, emulsifying, and diffusing groups. The inventive device has reliable structure, lower energy-consumption, high producing efficiency, and reduced producing cost.

The invention provides an optoisolator which can achieve forward propagating and reverse isolation of optical waves and solves the problem of an optoisolator manufactured based on the Faraday rotation type theory in the background technology. According to the optoisolator, by means of linearly polarized light generated by a polarizer in an optical path system, a nonreciprocal circular birefringence characteristics of magnetic optical rotation glass and a reciprocal circular birefringence effect of a natural optical rotation crystal, light in the forward direction can be focused at an output end again, and reflected light cannot be focused at an input end in the forward direction and is isolated after passing through magnetic optical rotation wedge-shaped glass, and accordingly, the purpose of unidirectional transmission of the light is achieved. The optoisolator has the obvious advantages of being high in isolation of light in the reverse direction, low in insertion loss, large in operation bandwidth and the like.

The present invention discloses a three-segmental silicon oil fan clutch which includes a housing (5), a oil storage cap (12), a temperature-sensing ring (11), a front cover (7), a drive shaft (2), and an active board (4), wherein the oil storage cap (12) is disposed on the rear end of the front cover (7) and forms a oil storage cavity with the front cover (7); the active board (4) forms a engaged cavity with the front cover (7) and the housing (5); a valve sheet (8) is set inside the oil storage cavity; the temperature-sensing ring (11) is set on the external surface of the front cover (7) and connected with the valve sheet (8), characterized in that the inner wall of the front cover (7) extends in transverse and has a separating part (1e) that separates the oil storage cavity into a main oil storage cavity (2a) and a secondary oil storage cavity (3a); the oil outlet hole includes a main oil outlet hole (3b) a first culvert opening (1b) and a second culvert opening (2b) that close to the first culvert opening (1b). Compared with prior art, the present invention is provided with features like more reasonable and simple integral structure, components production and installation cost reduced effectively, meanwhile energy consumption low, and noise small.

The invention relates to an energy-saving and anti-freezing power-generation solar water heater and an energy-saving and anti-freezing method, and belongs to the technical field of solar heat collectors. According to the technical scheme, a water tank (2) is of a downwards-arranged structure and is arranged at a low position, and a power-generation solar heat collector (4) is arranged at a high position; a water-tank water return port (10) is formed in the upper portion of the water tank (2), and a water tank outlet (7) is formed in the lower portion of the water tank (2); the power-generationsolar heat collector (4) is arranged at the top of the water tank, a heat collector water outlet (9) is formed in the upper portion of the power-generation solar heat collector (4), and a heat collector water inlet (8) is formed in the lower portion of the power-generation solar heat collector (4); the heat collector water outlet communicates with the water-tank water return port, the water tankoutlet communicates with the heat collector water inlet, and a water pump (6) is arranged between the water tank outlet and the heat collector water inlet; and an electric heater (13) is arranged at the bottom of an inner cavity of the water tank (2). According to the energy-saving and anti-freezing power-generation solar water heater and the energy-saving and anti-freezing method, the water tankis arranged at the low position, so that the anti-freezing effect in winter is good, the manufacturing and mounting cost is low, the heat efficiency is high, the heat loss is small, energy is comprehensively used, and the power-generation solar water heater is convenient to use and practical.

The invention relates to a feed pipe with an internal spiral. The internal spiral with a sealing seat and a rotation shaft is arranged in the feed pipe. The feed pipe can smoothly and uniformly conveyfodder into livestock and poultry fodder toughs, reduces blocking, reduces motor operating and conveying load, ensures safe operation of a conveying pipeline, prolongs the service life of the conveying pipeline, improves the efficiency and reduces cost.

The invention discloses a PLC equipment link protection switching method, and PLC equipment. The PLC equipment comprises A-end PLC access equipment and B-end PLC access equipment, wherein the A-end PLC access equipment and the B-end PLC access equipment are each provided with a bus interface, a configuration management module, and a cable transmission carrier function module which transmits an analog or digital signal through carriers, and the bus interface, the configuration management module and the cable transmission carrier function module are in communication connection with one another; a work link is arranged between the A-end PLC access equipment and the B-end PLC access equipment, and elevator running data is transmitted between the A-end PLC access equipment and the B-end PLC access equipment through the work link; and a protection link is further arranged between the A-end PLC access equipment and the B-end PLC access equipment, and can replace the work link for data transmission in case of a failure or breakdown of the work link. The PLC equipment link protection switching method and the PLC equipment provided by the invention can solve the technical problem of the conventional PLC equipment that low reliability and stability are caused by single-link data transmission.

The invention relates to a solar cell module curtain wall and a roof integrated with a building. The solar cell module curtain wall and the roof integrated with the building comprise an included-angle-type solar cell module body 1 and a wall body fireproof insulation board 2 or a steel frame. The included-angle-type solar cell module body 1 is composed of a right-angle vertical edge frame 11, solar cell panels 12, a junction box 13 and pressing strips 14. A slant gradient theta of the solar cell panels is set to be 45 degrees-70 degrees, the size of the specific gradient theta is determined according to the latitude of an installation location, and therefore solar energy absorbing efficiency and photovoltaic conversion efficiency are improved. The problem that a traditional solar cell module is directly installed on an outer wall so that solar energy absorbing efficiency and photovoltaic conversion efficiency are low is solved. The included-angle-type solar cell module body 1 is a good veneer of the curtain wall and the roof, the curtain wall and the roof are integrated organically. The solar cell module curtain wall and the roof integrated with the building are simple in structure and light in weight, free from supporting of a triangle frame, are completely integrated with a building, reduce manufacturing and installing cost, and widen the applied range of the solar cell module.

The invention relates to an arch-roof tank sampling apparatus, and concretely relates to a multipoint sampling and indicating apparatus of an arch-roof tank. The upper portion of an annular track rope (9) is positioned in the pulley slots of pulleys (4) of an upper fixing mechanism, the lower portion of the annular track rope is sleeved in the pulley slot of a transmission fixed pulley (8), the middle portion of one side of the annular track rope is provided with a ball float (12), one end of a sampling and oil guiding tube (10) is connected to the ball float, the other end of the sampling and oil guiding tube is connected to a sampling valve (6) outside the arch-roof tank (14), one end of a rotating shaft (20) is connected to a bearing pedestal (18) at the upper portion of a fixed seat (7), the middle portion of the transmission fixed pulley is fixedly connected to the middle portion of the rotating shaft, the other end of the rotating shaft is connected with a magnetic rotor (17) outside the arch-roof tank, and the magnetic rotor is provided with a reader (15). Stable ball float supporting is formed in the arch-roof tank by using the upper fixing mechanism and the fixed seat, and the accuracy of data obtained in the invention is greatly higher than that of data obtained by using present technologies.

The invention discloses a lamp bead lens for a traffic sign on a luminescent road. The lamp bead lens comprises a mounting rod and a lens. The lens is fixed onto the head end of the mounting rod, a luminescent lamp bead can be inserted into the hollow mounting rod from the tail end of the mounting rod, the diameter of the lens is larger than that of the mounting rod, and a circle of protruded guide restraint portions is arranged on the circumferential surface of the mounting rod, so that a circle of clamping space can be formed between the lens and the guide restraint portions; each guide restraint portion is provided with a guide oblique plane which is upwardly oblique towards the direction of the lens; the mounting rod can be inserted into mounting holes of a traffic signboard from the front surface of the traffic signboard during mounting, and the guide oblique planes can be gradually squeezed by the traffic signboard to deform, and then are ultimately fed into the clamping space tobe clamped and restrained. The invention further discloses the traffic sign on the luminescent road. The lamp bead lens and the traffic sign have the advantages of simple and compact structure, convenience and speediness in mounting, low manufacturing cost and high safety.

The invention relates to a combined beam connecting structure with welding studs and application thereof. The connecting structure comprises a splice plate set and a bolt set, wherein the splice plate set at least includes a large splice plate and two small splice plates, and a plurality of welding stud connectors are welded to the large splice plate; the bolt set at least includes two bolt assemblies each including a threaded shank, a fixing nut connected to the surface of the small splice plates, a fastening nut connected to the surface of the large splice plate and an anchor nut connected to the free end of the threaded shank. The bolt set ensures that steel structures of key stress-bearing parts in a combined beam are connected effectively, the free end shanks and anchor nuts in the bolt set and the welding studs on the large splice plate ensure that steel and concrete are connected effectively, the usage of connecting materials for the combined beam can be reduced, welding at a worksite is eliminated, manufacturing cost is reduced, engineering construction speed is increased, total engineering manufacturing cost is reduced, and durability of the structure is improved.

The invention relates to a multifunctional feeder for poultry, which is provided with a framework, a triangular bottom plate and a triangular top plate, the triangular top plate is over the triangular bottom plate, the triangular top plate and the triangular bottom plate are spaced and fixed on the framework, side plates are arranged at both ends of the framework, a storage space is defined by the side plates, the triangular bottom plate and the triangular top plate, cribs are arranged at the slope toes of both sides of the triangular bottom plate, feed pipes which are connected with a pneumatic feeding machine are arranged on the side plates, pressure relief pipes are arranged on the triangular top plate, the pressure relief pipes are connected with dust-collecting cloth bags, filters are arranged on the orifices of the pressure relief pipes, and the side slopes of the triangular top plate and the triangular bottom plate are respectively rolled on outer crib ribs and inner crib ribs. The triangular design of the multifunctional feeder for poultry ensures that fowls cannot discharge feces and urine into the cribs, thus preventing feed pollution and reducing disease propagation, feeding is automatic, feed is quantitatively supplied at regular time, feeding is scientific, feed waste is prevented, workers do not need to get into a poultry house to supply feed, workload is reduced, labor intensity is decreased, working efficiency is multipled, and a novel structure, low fabrication and installation cost and easiness in popularization are also the remarkable characteristics of the multifunctional feeder for poultry.

The invention discloses an immersed tube tunnel and a construction method. The immersed tube tunnel is formed by connecting a plurality of cylinders end to end in a butt joint mode, wherein each cylinder is cylindrical and comprises a cylinder wall, a first rib plate, a second rib plate, a third rib plate, a fourth rib plate and a fifth rib plate; the two ends of the first rib plate are connectedto the inner wall of the cylinder wall; and the central axis of the cylinder is positioned on the plane where the first rib plate is positioned. The cross section of each cylinder of the immersed tubetunnel is round, compared with a traditional immersed tube with a rectangular cross section, the thickness of the cylinder wall of each cylinder can be reduced as much as possible while the pressurebearing capacity of the cylinder is guaranteed, the production cost, namely the installation cost, of the immersed tube tunnel is reduced, and the construction period is shortened.

The invention provides a steel connector and a steel connecting structure. The steel connector comprises a rectangular side plate, and a first side plate, a second side plate, a third side plate and a fourth side plate vertically connected with four edges of the rectangular side plate. The first side plate and the second side plate are parallel and located on one side of the rectangular side plate to form a first side groove, the third side plate and the fourth side plate are parallel and located on the other side of the rectangular side plate to form a second side groove, the first side plate is perpendicular to the third side plate, and the first side plate, the second side plate, the third side plate and the fourth side plate comprise at least one hole. The steel connector is convenient to mount in the steel structure mounting process, reliable in connection, demountable and reusable, construction quality is improved, and resources are saved effectively.

The invention provides a steel-coil-sampling fixing device, and belongs to the technical field of steel coil sampling. The device comprises a land-roll driving roll, a land-roll driven roll, a universal driving shaft arranged at the outer side of the land-roll driven roll, swing arms connected to two end of the universal driving shaft, an upper pinch roll arranged between terminal parts of the swing arms, a lower pinch roll located below the upper pinch roll, and a swing hydraulic cylinder which is connected with the swing arms, and can control lifting and falling of the upper pinch roll by driving the swing arms. The steel-coil-sampling fixing device can ensure that steel coils are cut according to required lengths, reduce the cutting loss caused by overlength lengths of unfolded steel coils, and the security in the process of steel sample cutting can be improved.

The invention discloses a dust collecting device at the vertical straining portion of an air cushion. A box body surrounds a vertical straining turnabout drum in a half manner. Dust collecting outer connection pipes are fixed to the portions, located on the front belt face and the rear belt face of a conveying belt, of the side wall of the box body correspondingly. A long and narrow gap is machined in each dust collecting outer connection pipe. A connecting plate II and a connecting plate I are welded to the gaps at a certain angle correspondingly. A polyurethane baffle II and a polyurethane baffle I are fastened to the connecting plate II and the connecting plate I through bolts correspondingly. Holes for the other ends of the dust collecting outer connection pipes to penetrate out are machined in the side walls, corresponding to the dust collecting outer connection pipes, of the box body, connected with an air cushion dust collecting system through a connecting pipe and fixed throughbolts. A hole for the conveying belt to pass through is machined in a bottom plate of the box body. According to the technical scheme, the dust collecting device is installed on a vertical strainingdevice of an air cushion machine, by means of parts such as the box body and the polyurethane baffles, in a relative closed negative pressure space which is formed by the front surface and the rear surface of the conveying belt and is of a horn mouth shape, dust is drawn away by a dust collecting system of the air cushion machine by means of the gaps of the dust collecting pipes, and the overall environment-friendly performance of a conveying machine is improved.