33results about How to "Guaranteed perfusion quality" patented technology

The invention discloses a grouting method for a corrosion geological underwater large-diameter drilled pile. The grouting method comprises the following steps of: (1) hole opening; (2) drilling to form the hole; (3) hole cleaning; (4) steel reinforcement cage placement, (5) guide tube lowering; (6) first batch concrete grouting, namely hoisting a large hopper, which is connected to the guide tube, onto a guide tube platform; arranging 2-4 concrete tank trucks and 2-4 ground pumps on the shore, wherein pump lines of the ground pumps are connected to the large hopper by means of a temporary floating bridge; the concrete tank trucks deliver concrete to the ground pumps, and the ground pumps pump concrete into the large hopper; after the large hopper is full of concrete, a ball is pulled out; and 2-4 ground pumps are employed to feed concrete at the same time; and (7) subsequent concrete grouting, namely after the completion of first batch concrete grouting, replacing the large hopper by a small hopper having the capacity of 2-5 m3 for grouting to a designed elevation. By means of the grouting method for a corrosion geological underwater large-diameter drilled pile, the construction difficulties of the corrosion geological condition and a wide river channel can be overcome, and the quality of the drilled pile can be improved so as to ensure the stability of the main tower of a bridge.

A hollow self-expanding bottom anchor bolt, including a rod body, a wedge, and a liner pipe. The center of the rod body is provided with a hole in the rod body. The rod body includes a bottom end, a middle rod, and an exposed end. There is a wedge inner hole in the center of the center, the wedge includes a wedge head and a base, the outer peripheral surface of one end of the inner liner is connected with the inner peripheral surface of the inner hole of the rod, and the outer peripheral surface of the other end of the inner liner is connected with the inner hole of the wedge. The inner peripheral surface is connected, and the inside of the lining pipe is connected with the inner hole of the rod and the inner hole of the wedge; when installing, insert the above-mentioned anchor bolt into the bottom of the straight hole, hammer or impact the installation cap, so that the wedge pushes the cutter head toward the The hole wall is expanded, and the cutter head is inserted into the straight hole wall to chisel out the broken pieces. While hammering or impacting the installation cap, use the installation cap to input compressed air to blow out the broken pieces. The grout overflows, and the anchor bolts are installed after the grout solidifies. This design not only has good bottom expansion effect, but also has good grouting quality, high durability and high reliability.

The invention relates to a concrete pouring device, which comprises a guide pipe for pouring concrete, a funnel-shaped pouring guide device connected with one end of the guide pipe and a lifting device of the guide pipe, wherein the guide pipe is formed by connecting multiple sections of short pipes together through a connecting device in a hermetical manner, and the other end of the guide pipe is sealed and closed by a pipe orifice closing device in a removable manner. The invention further relates to a guide pipe type concrete pouring method using equipment including the pipe orifice closing device, the pipe orifice closing device is mounted on the guide pipe before pouring, the pipe orifice closing device is placed on a foundation along with the guide pipe, and the pipe orifice closing device can be separated from the guide pipe after the beginning of the pouring of the concrete.

The invention discloses a multifunctional organ transplantation working vehicle and an application method thereof. The working vehicle comprises a main vehicle body, wherein a support is arranged below the main vehicle body, an operating platform is arranged at the upper end of the main vehicle body, a thermal-insulation box is arranged at the left half part of the main vehicle body, and an upper end cover of the thermal-insulation box is used as the left half part of the operating platform; a first peristaltic pump and a second peristaltic pump are arranged at the right half part below the operating platform; a lamp arm is arranged on one side of the main vehicle body, and an operation lamp is arranged at the upper end of the lamp arm; a stretcher is arranged below the main vehicle body; and a negative-pressure suction device is also arranged below the operating platform of the main vehicle body. By means of the working vehicle, on the premise that an existing operation vehicle is not required to be transformed, the peripheral space can be fully utilized, cleanliness of an operation area can be guaranteed, and the requirement for accurate regulation of organ perfusion pressure can be met; and meanwhile, smooth obtaining of donor organs and repairing of the organ operating platform for operations are guaranteed, the blank of the lack of professional operating equipment at present is filled up, and a lot of problems during operations are solved.

The invention discloses a facility and method for preventing peripheral settlement of an intake tower from causing geomembrane damage. The facility comprises a grouting device and a settlement amountdetection device. The grouting device comprises a grouting machine, a grouting main pipe and multiple grouting branch pipes. The grouting main pipe is vertically arranged in the intake tower, the topof the grouting main pipe stretches out of the intake tower and is connected with the grouting machine, and the multiple grouting branch pipes are arranged at the bottom of the grouting main pipe in aradial shape. The settlement amount detection device is used for detecting the settlement amount of a reservoir around the intake tower and comprises an ultrasonic transceiver and a reflection plate.By means of the facility and method, the settlement amount detection device monitors differential settlement of a foundation around the intake tower regularly, once it is found that the settlement difference exceeds the allowable value, the grouting device carries out grouting on the settlement area in time, and differential settlement is eliminated; and if it is found that large settlement happens to the foundation again, the settlement area can be subjected to grouting repeatedly, and the problem of pulling destroying caused by too large geomembrane deformation due to foundation differential settlement around the intake tower is thoroughly solved.

The invention relates to a treatment method of an elevation-exceeding part of a concrete pouring pile head. The method comprises the following steps of: within 10 minutes after a pouring pipe is pulled out, inserting a branch compressed gas pipe of a concrete pouring pile head treatment device into concrete and ensuring that a distance of 100-500 millimeters is reserved between the bottom end of the branch compressed gas pipe and a required elevation of the pouring pile head; successively opening a regulating valve and a master regulating valve of the concrete pouring pile head treatment device to ensure that the compressed gas is ejected out from the bottom of the branch compressed gas pipe; within 3-10 minutes after slurry bubbles appear on the surface layer of the concrete, successively closing the master regulating valve and the regulating valve and stopping inputting the compressed gas; pulling the branch compressed gas pipe out; and chipping off a set elevation part exceeding the pouring pile head. In the invention, materials in different proportions in the concrete material are separated in the presence of the action of gas by adopting the compressed gas so that the strength of a redundant concrete part is greatly reduced, thus the part is easy to treat, and the main reinforcing steel bar of the pouring pile head and the quality of the pile head concrete are not easy todamage.

Disclosed is a large-scale shallow water floating cofferdam, relating to the large-scale cofferdam in bridge engineering. The cofferdam comprises an annular structure composed of two parallel cofferdam side plates, and is characterized in that the bottom part between the parallel cofferdam side plates and the parallel cofferdam side plates form a waterproof closed area, the inside of the annular structure is provided with a plurality of closed bottom compartments for reducing the underwater depth of the cofferdam and a plurality of bored piles which are matching with the pile positions of bridge pier, the closed bottom compartments are interconnected into a plurality of transverse and longitudinal columns, the two ends of the closed bottom compartments and the cofferdam side plates are connected to divide the cofferdam into a plurality of symmetrical work areas and avoid the position of bored piles, and the height of the closed bottom compartment is lower than that of the cofferdam side plate. The large-scale shallow water floating cofferdam of the invention has shallow underwater depth during cofferdam floating, reduces the requirement of the ship tonnage and mechanical equipment, has little water level influence to the floating navigation route, reduces cost, and has little perfusion area during the perfusion process of underwater back cover concrete and can guarantee the perfusion quality of the concrete.

The invention relates to a pouring method for pouring molding of a special-shaped coil former. The method includes the following steps that first, pretreatment of adhesives is performed, the adhesives are subject to defoaming treatment in stirring and pressure drop modes, and stirring under vacuumizing and stirring under ordinary pressure are carried out alternately; second, workpiece installation is conducted, and the coil former is placed into a molding tool; and third, filling and sealing are carried out, and a four-opening synchronous filling and sealing tool is used for pouring the four surfaces of the coil former at the same time. By the adoption of the tool and the pouring method thereof, the molding quality of coil pouring of a seeker product is guaranteed, reliable performance of the product is ensured, and production efficiency is improved.

The invention provides a new type of concrete separation device and construction method for subway slab track construction. The separation device is installed on the rail above the track slab through traveling wheels, the separation device can slide freely on the rail, and the separation device passes through The slide rail beam and the slider are symmetrically equipped with two freely movable sub-chutes to achieve precise alignment between the sub-chute and the feeding port and the pouring hole, and can realize continuous pouring, which solves the problem of process interruption in the traditional construction process and improves the construction efficiency. higher. There are limit devices on both sides of the separation device. The limit device uses the stop block that can move up and down to realize the clamping connection with the filling hole of the track plate, and then realizes the braking of the separation device, avoiding the discharge of the ash hopper and the separation of the chute. There is no risk of the slipping device slipping during the filling process, the operation is convenient, and the use is safe and reliable.

The invention discloses a semi-assembled pipe curtain structure based on a steel reinforced concrete connection. The semi-assembled pipe curtain structure comprises lateral supporting structures and atransverse supporting structure, wherein the lateral supporting structures are used for supporting lateral surrounding rock, the transverse supporting structure is used for supporting the ground, thelateral supporting structures are connected through the transverse supporting structure, each of the lateral supporting structure and the transverse supporting structure comprise a plurality of largesteel pipes, the adjacent large steel pipes are connected through a prefabricated connecting component, and concretes I are filled in the large steel pipes for packaging the prefabricated connectingcomponent. The construction process of the semi-assembled pipe curtain structure based on the steel reinforced concrete connection comprises the following steps of 1, manufacturing a working well; 2,prefabricated connecting members outside the field; 3, installing a pipe curtain; 4, forming a pipe curtain structure; and 5, grouting reinforcement treatment and building a building. The manufacturing process of the prefabricated connecting component is standardized, the concrete pouring quality of the prefabricated connecting component is guaranteed, and the phenomena of insufficient concrete pouring compactness and internal concrete missing are avoided.