DC regulated power supply of self-generating auxiliary votage type

Drawing type small box girder demoulding force transmission device

The invention discloses a drawing type small box girder demolding force transmission device which comprises a supporting mechanism, a power crank guide mechanism and an inner die traction mechanism, the inner die traction mechanism is connected with an inner die top plate and an inner die bottom plate and arranged front and back in the longitudinal direction of a small box girder body, and the upper end of the power crank guide mechanism is fixedly connected with the inner die traction mechanism. The bottom of the supporting mechanism is fixed to the inner mold bottom plate, the upper end of the supporting mechanism is rotationally connected with the lower portion of the power crank guide mechanism and provided with a first rotating shaft, and the power crank guide mechanism rotates around the first rotating shaft after being stressed and drives the inner mold traction mechanism to move backwards at the same time. The crank mechanism is adopted to reasonably distribute longitudinal drawing ...

Pouring die for rectangular shield mixed duct piece and pouring method thereof

The invention provides a pouring die for a rectangular shield mixed duct piece. Each circle of the duct piece comprises an annular steel framework and concrete poured in the steel framework; the steel structure is divided into a plurality of to-be-poured parts to be subjected to respective pouring; the pouring die is characterized in that a mounting die comprises a fixed bottom die and two movable side dies arranged at two sides of the fixed bottom die; the movable side dies are glidingly connected with the upper surface of the fixed bottom die; the fixed bottom die and the movable side dies form a pouring space with only one opening in the upper side; the pouring space is used for containing the to-be-poured parts of the steel framework; the concrete structure is poured according to the shape of the pouring space. During pouring, one sides of the inner or outer annular surfaces of the to-be-poured parts of the steel framework are connected with the fixed bottom die. The invention provides ...

Meter rice device in cradle of adduction line formula strander

The utility model provides a meter rice device in cradle of adduction line formula strander, including meter rice wheel and signal generator, meter rice wheel sets up in the cradle, is provided with the signal reflection ware on arbitrary terminal surface of meter rice wheel, and signal generator passes through installation device and sets up at quick -witted incasement, and signal generator faces the signal reflection ware, and signal generator disposes and receives the measurement unit. The utility model provides a meter rice device in cradle of adduction line formula strander, simple structure, simple to operate accomplishes meter rice to the finished product steel wire in the cradle, improved the accuracy of meter rice.

Electronic puzzle lock

The present invention relates to an electronic trick lock. It uses an eight-bit chip computer as its kernel component, and utilizes the built-in chip computer software to control locking, unlocking, prompting, telephone alarm and sound-changing alarm of the lock, and only when the key is in accordant with the keyed cipher code, the user can unlock. Its external component is less, circuit structure is simple and compact, and its production cost is low.

Bottom die and core mould integrated slidable stencil and construction process

The invention provides a bottom mold and core mold integrated sliding template and a construction process. The process is suitable for manufacturing an n-shaped section pretensioning prestressed concrete beam and can be broaden and applied to the manufacture of the pretensioning prestressed concrete beam with a downward open mold cavity. The bottom mold and core mold integrated sliding template comprises a ground crossbeam connected and fixed with a pedestal foundation, a slippage limiting and locking mechanism which is arranged on the ground crossbeam and consists of a slippage contact block, a limit block and a positioning pin, a bottom mold rack arranged on the slippage limiting and locking mechanism, and a bottom mold and a core mold of a beam body section which are connected with thebottom mold rack into a whole; a bottom mold of a supporting seat part is placed on the bottom mold rack by an adjusting cushion block; and the bottom mold can be independently adjusted so as to meetrequirement ...

Fabricated double-T bridge without cast-in-place cross beam and construction method of fabricated double-T bridge

The invention provides a fabricated double-T bridge and a construction method thereof. The bridge comprises end cross beams arranged at the ends of beam bodies of the precast beams and bridge deck slab joints between the adjacent double-T beams in the longitudinal direction of the bridge. The bridge deck slab joints comprise transverse connection and/or longitudinal connection; the longitudinal connection is one of a pier top longitudinal continuous structure, a pier top bridge deck pavement continuous structure or a pier top expansion joint connection structure. According to the method, no cross beam needs to be constructed on site, only the bridge deck slab joints need to be constructed on site, bridge site construction is greatly simplified, rapid site construction is achieved, and the influence of bridge site construction on traffic and the environment is reduced.

DC regulated power supply of self-generating auxiliary voltage type

This invention relates to a D-C voltage-stabilized source which has two additional diodes on the basis of full-wave rectification to form a bridge rectifier circuit, and the main source D-C voltage is taken from the secondary mid-tapping of the transformer and the auxiliary source D-C voltage is taken from the bridge rectifier circuit.

Decabromodiphenyl oxide production normal water cyclic utilization device

The utility model discloses a decabromodiphenyl oxide production normal water cyclic utilization device, including rinsing jar, sanding reation kettle, pressure filter and the return water storage tank that communicates in proper order, the rinsing jar is provided with the return water import, and the discharge gate of rinsing jar communicates sanding reation kettle's feed inlet, and sanding reation kettle's discharge gate communicates the feed inlet of pressure filter, and the delivery port of pressure filter communicates the water inlet of return water storage tank, and the delivery port ofreturn water storage tank communicates the return water import of rinsing jar. The utility model has the advantages of being simple in structure and convenient in operation, it is effectual to economize on water, because utilize waste water again, has reduced environmental pollution, has reduced the sewage discharge to the cost has been practiced thrift.

Prestress self-locking type precast concrete small box girder inner mold

The invention discloses a prestress self-locking type precast concrete small box girder inner mold which comprises at least two girder body sections arranged in sequence, and the center axes of the two girder body sections coincide. Four mounting channels are arranged in each beam body section, and the four mounting channels are respectively arranged in four corners of the longitudinal section of the beam body section; the sides, close to each other, of every two adjacent beam body sections are connected through a plurality of conical pin shafts and conical pin sleeves. For each mounting channel, the prestressed tendons are arranged in the mounting channels in a penetrating manner, and one ends of the prestressed tendons are fixedly connected with one ends of the spliced beam body sections through fixing pieces; the other ends of the prestressed tendons are coaxially and fixedly connected with the deformed steel bar connecting rods through the connecting rod connectors, the deformed steel ...