114results about How to "Easy construction" patented technology

An electrically driven brake booster 1 includes an input member 4 disposed in operative association with a brake pedal 12, an output member 5 disposed in operative association with the master cylinder 6, and drive transmitting means 10 for translating a rotating motion of a motor 9 into a linear motion to be transmitted to the output member 5. The drive transmitting means 10 comprises a rack 23 formed on the output member 5, and pinions 21, 22 disposed in operative association with the motor 9 and in meshing engagement with the rack 23. Also, reaction transmitting means 8 which transmits a brake reaction to the input member 4 and the output member 5 at a given proportion is provided. In comparison to conventional drive transmitting means, the drive transmitting means 10 of the present invention has a simple construction, a reduced weight and a better transmission efficiency. The provision of reaction transmitting means allows a correct brake control to be achieved on the basis of a brake reaction.

An extendible and retractable electrical extension cord device is disclosed, which includes a housing adapted to be secured to a wall of a structure, and a reel mounted in the housing for rotation. An extension cord is wound about the reel, and has a first plug end in the housing and a second plug end extending outwardly through the housing and winding relative to the reel upon rotation thereof in a first direction, and unwinding relative to the reel upon rotation thereof in a second direction. An electric-powered drive assembly is mounted in the housing and is movable between an active condition rotating the reel in the first direction and an inactive condition permitting the reel to rotate freely in at least the second direction.

The invention discloses an application of water-soluble paper to argon arc welding of a long-distance industrial pipeline intermediate joint collision port. The application is characterized by comprising the following steps that a, two pieces of water-soluble paper (1) with the diameter larger than the pipe diameter by 100-200 mm are prepared according to the pipe diameter of pipelines; b, one piece of water-soluble paper (1) is adhered inside the corresponding pipeline (2) by using glue (4); c, one piece of water-soluble paper (1) of the two pieces of water-soluble paper is provided with an exhaust hole (3); d, a paper adhesive tape (5) is used for completely sealing a joint gap of the whole pipelines (2), and a copper pipe (8) connected with an argon strip (9) is used at the gap to fillthe pipelines (2) with argon; and e, welding is carried out when the concentration of the argon inside the pipelines (2) is detected to reach 99.9% by using an instrument. The application has the advantages that for the arrangement of the water-soluble paper in the pipelines, the measure is simple, the construction is convenient, when welding of a long-pipe-section pipeline collision port is carried out, the argon filling protection can be conveniently and rapidly completed, the pipeline welding quality is effectively guaranteed, and the engineering cost is reduced.

The invention provides a bending and shearing mixed type square steel tube damper. The bending and shearing mixed type square steel tube damper is mainly composed of a square steel tube, bending energy dissipation plates, flange restraining plates and connecting bolts. The side surface of the square steel tube is a rectangular energy dissipation face and can bear shearing load energy dissipation;the bending energy dissipation plates are welded to the two ends of the shearing energy dissipation face, are in an X shape and can bear bending load energy dissipation; and the flange restraining plates are welded to an upper square steel tube flange and a lower square steel tube flange, the flange restraining plates are arranged on the outer sides of the upper square steel tube flange and the lower square steel tube flange and are slightly longer than the upper square steel tube flange and the lower square steel tube flange, bolt holes are reserved in the two ends of the flange restraining plates, and the diameter and the distance of the bolt holes can be determined through calculation according to actual engineering requirements. The square steel tube is connected with frame beams, frame columns and infilled walls through the connecting bolts, and the upper square steel tube flange and the lower square steel tube flange are prevented from yielding and tilting.

The invention discloses a concrete curing film production technology and production equipment thereof. A plastic film is coated with a covering layer with super-strong water absorbing and retaining performance. The covering layer comprises a super-strong macromolecule water absorbing material and a bonding agent. The invention further discloses the concrete curing film production equipment. The concrete curing film production equipment comprises an unreeling device, a film expanding device, a punching device, a gluing device, a powder scattering device, a composite device and a reeling device. The plastic film is expanded into a single layer from a folded interlayer through the unreeling device, and the plastic film is tidied and conducted by the film expanding device to enter the subsequent procedure. The whole production line is in continuous variable transmission, and linkage is achieved. The concrete curing film produced through the technology is an update product of a traditional concrete curing material, the production technology of the concrete curing film is low in energy consumption, the production equipment is simple in structure, and construction is convenient. The equipment is high in automation degree and suitable for meeting the industrial requirement. A concrete water-saving moisturizing curing film of a single-layer structure can be produced, and a concrete water-saving moisturizing curing film of a double-layer structure can be produced as well.

The invention discloses a water-dispersible light stabilizer and a preparation method thereof. According to the preparation method, monomers, solvents, catalysts, additives and neutralizers firstly react for 2-8h under the rotating speed of 80-300r/min at the temperature ranging from 50 DEG C to 150 DEG C to prepare waterborne resin pre-polymers, the prepared waterborne resin pre-polymers, light stabilizers, additives and water are uniformly stirred and mixed at the temperature ranging from 20 DEG C to 120 DEG C to prepare water-dispersible light stabilizer, the percentage of the weight of the light stabilizer to total weight is 50%-90%, samples are hermetically placed into a baking oven with the temperature ranging from 50 DEG C to 70 DEG C to store for 4-8 weeks in an accelerated manner and cannot layer, and the samples are dispersed into water to obtain milk-white uniform stable dispersion liquid. The preparation method is simple and easy to control, and the prepared samples are good in stability, wide in application range and easily dispersed into the water and have quite important values in application of waterborne product additives.

The invention relates to a water-based matte finishing varnish as well as a preparation method and application thereof. The water-based matte finishing varnish comprises the following components in parts by weight: 65-70 parts of silicone acrylic resin, 0.3-0.5 part of polysiloxane, 2-5 parts of wax dispersion, 0.1-26 parts of auxiliaries and the balance of water, totaling 100 parts. The water-based matte finishing varnish has excellent low-temperature (5 DEG C) film-forming performance on the premise that the addition amount of a coalescing agent is small and matting powder does not need to be added, has excellent matte property, anti-doodling property, stain resistance and scratch resistance after being formed into a film, is light in smell, ensures the low-temperature film-forming effect and is convenient for construction.

The invention discloses a negative pressure air jet deep well dewatering device of a foundation pit. The negative pressure air jet deep well dewatering device comprises a negative pressure system, a positive pressure system and a deep well pipe assembly. The negative pressure system is composed of a vacuum pump, a drain pipe, a vacuum water main and a vacuum branch water pipe. The positive pressure system is composed of an air compressor, an air main, a branch air pipe, a switching valve and an air tap. The deep well pipe assembly is composed of a well pipe and a well cover. The vacuum branch water pipe of the negative pressure system extends into the well pipe through the well cover. The branch air pipe of the positive pressure system extends into the well pipe through the well cover, or penetrates into the vacuum branch water pipe from the outside of the well cover and extends into the well pipe together with the vacuum branch water pipe. The negative pressure air jet deep well dewatering device is additionally provided with the set of positive pressure system, improves the dewatering speed in the initial dewatering period, and has the advantages of high work efficiency, easiness in construction and good dewatering effect as the vacuum branch water pipe can reach downwards to the dewatering depth of the foundation pit in one time without adjustment.

The invention discloses a steel plate butt welding positioning device and a counterpoint method. The positioning device comprises two C-shaped bending plates and a connecting plate, wherein a groove used for fixing the C-shaped bending plates is formed in the connecting plate, the C-shaped bending plates are fixed in the groove, the connecting plate and the two C-shaped bending plates are integrally welded to form a connecting piece, the positioning device further comprises a shear key, the shear key is welded on a steel plate needing butt connection, a circular hole is formed in the shear key, and plug pins are inserted in the circular hole in the shear key. According to the invention, the steel plate butt welding positioning device and the counterpoint method can realize butt positioning connection between two steel plates at any positions, improve the accuracy of fit-up clearance of steel plate grooves and the coplanarity of the two steel plates, effectively control welding deformation of the steel plates, and simultaneously adjust the relative positions of the two steel plates within a plane and outside the plane. The steel plate butt welding positioning device is convenient in construction, flexible in operation, and nearly free from site environmental impact, can be repeatedly used as a circulated tool, and reduces construction cost.

The invention relates to a frame wall pile type wharf comprising a wharf surface, a pile foundation, an apron board and backfill. The wharf is characterized in that the pile foundation is of a wall pile frame structure comprising a square frame and wall piles. The front side wall and the rear side wall of the square frame are provided with a plurality of wall pile holes in the longitudinal direction. A plurality of the preformed wall piles penetrate through the wall pile holes. The left wall and the right wall vertical to the side walls of the square frame are provided with wall pile holes, supporting piles penetrate through the wall pile holes, the square frame is arranged on the upper portions of the wall piles, and the outer sides or the inner sides of the wall piles, on the side facing water, of the lower portion of the square frame are provided with the apron board used for blocking silt. The frame wall pile type wharf has the advantages of being strong in foundation adaptability, high in component performing degree and simple and convenient to construct as a traditional sheet pile type wharf and a high pile wharf, and meanwhile overcomes the defects that the sheet pile type wharf and the high pile wharf are poor in durability and low in bearing ability.

A magneto generator can increase a suppression force to suppress permanent magnets from being moved to an opening side of a flywheel with easy construction and at low cost. In this magnet generator, the flywheel has a groove formed on its inner peripheral wall surface at an opening side thereof, and a magnet positioning member has a magnet coming-off preventing member formed at the opening side of the flywheel so as to cover end faces of the permanent magnets, with a protrusion being formed on the magnet coming-off preventing member so as to engage the groove in the flywheel. The protrusion is in engagement with the groove whereby the movement in an axial direction of the permanent magnets can be suppressed.

The invention discloses a light high-strength ash aerated building block which is characterized by comprising the following components in parts by weight: 10-11 parts of lime, 8-9 parts of cement, 77-79 parts of fly ash, 2-4 parts of gypsum, 0.09-0.12 part of aluminum powder, 1-2 parts of medical stone, 1-2 parts of rare earth porcelain sand and 0.05-0.07 part of an additive. The invention furtherdiscloses a preparation method of the light high-strength ash aerated building block. The light high-strength ash aerated building block disclosed by the invention is excellent in comprehensive performance, light in weight, strong in frost resistance, good in compressive strength and excellent in crack resistance, and has the advantages of energy conservation and heat preservation.

The invention relates to a light well point combined type foundation pit dewatering device. The light well point combined type foundation pit dewatering device comprises a vacuum jet pump, a water collecting main pipe, a well point pipe, a water drainage pipe, a bent connecting pipe and a deep-suction high-pressure jet pump; the water collecting main pipe is laid on the ground in a closed loop mode, the vacuum jet pump communicates with the water collecting main pipe, one end of the vacuum jet pump communicates with the water drainage pipe, one end of the bent connecting pipe communicates with the water collecting main pipe, and the other end of the bent connecting pipe communicates with the well point pipe; the deep-suction high-pressure jet pump communicates with the bent connecting pipe; the well point pipe comprises a first water suction rod and a second water suction rod, and an extension assembly for driving the second water suction rod to move downwards is arranged between the first water suction rod and the second water suction rod; and a water seepage cylinder is arranged at one end of the second water suction rod, the two ends of the water seepage cylinder are closed, a plurality of water seepage holes are formed in the side wall of the water seepage cylinder, a water measuring assembly for measuring the water amount in the water seepage cylinder is arranged in the water seepage cylinder and electrically connected with the extension assembly through a control system, and the water seepage cylinder is inserted into an underground water layer. The light well point combined type foundation pit dewatering device has the effect of facilitating construction of operators.

The invention discloses a connecting structure for prefabricated concrete wallboards and a construction method of the connecting structure, and belongs to the technical field of reinforcing bar engineering of civil engineering construction. The structure is characterized in that positioning grooves are formed in the corresponding positions of the tops and the bottoms of prefabricated concrete wall units, connecting buttresses used for connecting the upper-layer prefabricated concrete wall units and the lower-layer prefabricated concrete wall units are arranged in the positioning grooves, a plurality of end right-angle hooks are sequentially arranged on the tops and the bottoms of the prefabricated concrete wall units in a length direction, cast-in-place hidden beam longitudinal bars sequentially penetrate through the end right-angle hooks at the bottoms of the upper-layer prefabricated concrete wall units and the end right-angle hooks at the tops of the lower-layer prefabricated concrete wall units and connect the end right-angle hooks together to form hidden beam reinforcing bar framework areas, and the upper-layer prefabricated concrete wall units and the lower-layer prefabricated concrete wall units are connected together by pouring concrete in the hidden beam reinforcing bar framework areas. The purpose of the connecting structure is to overcome the defect of inconvenient connection between shear wall units in the prior art, realize rapid positioning centering and connection, and is high in connection stability.