35results about How to "Control adjustment" patented technology

The invention discloses special teaching auxiliary equipment for business administration, and relates to the technical field of teaching equipment. The special teaching auxiliary equipment comprises abox body. The bottom surface of the box body is fixedly connected with a base; and universal wheels are fixedly mounted at four corners of the bottom surface of the base. According to the special teaching auxiliary equipment for business administration, through cooperation of a driving motor, a bidirectional screw rod, a second threaded sliding block, a lifting plate, a sliding groove and a second connecting plate, lifting of the lifting plate can be effectively controlled, the lifting plate can be more stable during lifting, and the lifting plate is prevented from deviating during lifting, so that the effect of adjusting the height of a main teaching board is effectively realized; and through cooperative arrangement of a fixing frame, a rotating base, a limiting hole, a limiting rod, a fixing column, a universal ball, a sliding groove plate, a second fixing frame and a telescopic spring, adjustment of the left-right angle of the main teaching board can be effectively controlled, therotating base with the adjusted angle can be limited, and therefore, the stability of the main teaching board is guaranteed.

The invention relates to a hoisting television stand with a retractable function. The hoisting television stand comprises an installation top plate, a lifting device and a protection device, the middle of the installation top plate is provided with an installation hole, the bottom of the left end of the installation top plate is provided with the lifting device, and the protection device is installed at the bottom of the right end of the installation top plate. The lifting device comprises a lifting fixed column, a lifting telescopic column, a motor connecting frame, a rotating motor, a rotating shaft, a rotating gear, a telescopic mechanism, a clamping mechanism and a lifting spring, and the protection device comprises a protection push rod, a protection support, a rotating plate, a protection telescopic plate, a telescopic push rod, a rotating plate angle push rod and a scrubbing mechanism. The problems that the outer end of a television can not be locked, the angle and the directionof the television cannot be adjusted, dust on a television display screen needs to be manually removed, and the television cannot be automatically retracted and protected in the television hoisting using process in the prior art are solved.

The invention discloses a side wall trolley which comprises a plurality of side wall trolley units spliced lengthways, wherein each side wall trolley unit comprises a trolley moving and fixing system and a steel moulding plate connecting and positioning system. The side wall trolley adopts the design of cantilever connection of a steel moulding plate and a trolley, combines hydraulic jacks, screw jacks and walking systems to realize three-position accurate adjustment, realizes bearing and transmission of load through components such as opposite supporting pipe fittings, lateral screw rod jacks, bearing jacks, tail margin guy cables and anti-floating screw rod jacks, and is stable and reliable in structure. Through the adoption of the side wall trolley, construction of a steel pipe bracket and assembly of moulding plates are not need, thus greatly simplifying construction procedures, improving the mounting speed and reliability of the moulding plates and the construction efficiency, meanwhile reducing labor intensity of workers, greatly saving manual labor, wood and steel pipe brackets and lowering the construction cost.

The invention discloses a side wall concrete construction method employing a side wall trolley. The employed side wall trolley is formed by a side wall trolley unit or longitudinal splicing of a plurality of side wall trolley units, the side wall trolley unit comprises a trolley moving and fixing system and a steel moulding plate connecting and positioning system; the construction steps are the followings in sequence: paving a walking track, precoating a release agent, enabling the trolley to move and take place, adjusting a screw jack, repeatedly adjusting an extension-type cantilever beam and a hydraulic jack, adjusting a bearing jack, mounting a lateral screw rod jack, mounting a foot margin inhaul cable, mounting an anti-floating screw rod jack, mounting an opposite-support pipe fitting, mounting a closing-up net and a water stop steel plate, casting concrete, stripping and the like, that building a steel pipe support and a spliced template is not required can be achieved, after the adoption of the invention, the mounting and the demounting speeds are fast, three-direction accurate adjustment can be achieved, the construction is stable and reliable, the concrete surface flatness is good, and joint deviation is small.

The invention discloses a floor slab concrete construction method applying a floor slab trolley. The applied floor slab trolley is formed by a floor slab trolley unit or longitudinally splicing a plurality of floor slab trolley units, and each floor slab trolley unit comprises a trolley moving and fixing system and a steel template connecting and positioning system. The method sequentially includes the steps: laying traveling rails, moving and enabling the trolley to be in place, adjusting first hydraulic jacks and bearing jack, adjusting second hydraulic jacks, adjusting third hydraulic jacks, mounting screw rod jacks, mounting lateral screw rod jacks or oppositely-supporting steel rods, mounting a mouth closing net and a waterstop steel plate, pouring concrete, removing a formwork and the like, and needlessness or reduction of setting-up of a steel pipe support and a splicing template is realized. By the method, three-orientation accurate adjusting can be realized, and high mounting and demounting speed and low worker labor intensity are realized; construction process of the floor slab trolley can be accelerated by adopting early formwork removing technology, so that construction period is shortened, construction cost is saved, and quickness, stability and reliability in construction are realized.

The invention relates to a double-slag process for smelting ultralow-phosphorus and low-carbon steel in a combined-blown converter. The double-slag process comprises the following steps: (1) molten iron and waste steel are put into the converter according to the molten iron ratio of 85% to 90%; (2) bottom blowing gas adopts nitrogen and argon in a switched manner, the nitrogen is adopted before the supply of 80% of oxygen, and the argon is automatically switched after the supply of 80%t of oxygen; (3) at the first stage of blowing, the flow rate of the oxygen adopts 20000-21000 Nm<3> / h within the first minute, and a normalized slag lance position of 1800-2000 mm is adopted; after the start of blowing for one minute, the flow rate of the oxygen is adjusted to be 13000 Nm<3> / h; (4) a de-slagging moment is set as 8-10 minutes after the start of blowing; (5) at the second stage of blowing, blowing is started when the high lance position is 1700-1800 mm, the flow rate of the oxygen is adjusted to be 18000 Nm<3> / h, and the converter end point control target is that carbon is less than 0.05%, and phosphorus is less than 0.004%. According to the double-slag process provided by the invention, the converter end point phosphorus can be stably controlled to be less than or equal to 0.004 percent, so that the target of smelting the ultralow-phosphorus and low-carbon steel by a single converter is stably realized.

The invention discloses an automatic repair device for the damage of the exterior facade of a sandwich panel wall, which belongs to the technical field of repairing the metal surface of the sandwich panel, and comprises a closed cover provided with a hoisting ring, one side of the closed cover is fixedly connected with a fitting frame A fitting mechanism is fixedly installed between the fitting frame and the corresponding position on one side of the closure cover, a drive mechanism is fixedly installed on one side of the inner cavity of the closure cover, and a repair mechanism and a spraying mechanism are installed deflectably on one side of the drive mechanism. mechanism. In the present invention, a plurality of spliced ​​scraping sheets are used to fully scrape the scraping putty by the scraping roller, which can avoid the color difference with the wall as a whole due to the aging degree of the topcoat after processing, and at the same time improve the curing degree of the topcoat , can replace manual processing through multi-component cooperation, reduce labor costs, and at the same time avoid secondary damage to the wall through the flexible bonding mechanism, and improve the processing and repair of damage to the external facade of the wall during transportation and construction. It has a good market Value.

The invention discloses a non-embedded intelligent deceleration strip. The non-embedded intelligent deceleration strip comprises a control processing device, a crawler-type deceleration strip body, a driving motor, a fixing frame, a sliding frame, n fork type push-pull assemblies and a base; the deceleration strip body is located above the fork type push-pull assemblies, and the top ends of inclined rods of the fork type push-pull assemblies are rotatably connected with the deceleration strip body; and a first pulley is mounted at the bottom end of the inclined rod of each fork type push-pull assembly; the fixing frame and the sliding frame are located at the two ends of the deceleration strip body; the fixing frame is connected with one ends of the fork type push-pull assemblies rotatably, and the sliding frame is connected with the other ends of the fork type push-pull assemblies rotatably; second pulleys are mounted at the bottom end of the sliding frame, and the first pulleys and the second pulleys are embedded in a sliding rail; the driving motor is fixed to the base, and the driving motor is connected with the sliding frame; and the signal output end of the control processing device is connected with the signal input end of the driving motor. According to the non-embedded intelligent deceleration strip, excavation of the road surface for embedding is not needed, later maintenance is convenient, and a vehicle can be decelerated more accurately.