8results about How to "Avoid reinforcement" patented technology

The utility model relates to a structure for additionally arranging a cornice on an existing building. The structure comprises an existing building roof; an existing building beam; one end of the cornice supporting rod is located above the existing building roof, and the other end of the cornice supporting rod extends out of the existing building roof and extends to the position below the existing building roof; the top of the existing parapet wall is detached to form a mounting surface parallel to the cornice supporting rods, and the mounting surface is parallel to the length direction of the existing parapet wall; the first mounting plate is arranged on the mounting surface, connected with the cornice and used for supporting the cornice; the supporting structure is installed on the outer side face of the existing building beam, and the supporting structure is connected with the cornice supporting rod and supports the cornice supporting rod. The supports are only installed on the existing parapet wall and the existing building beam to support the cornice, so that the cornice supporting structure does not need to damage an existing building roof and a waterproof layer, the existing parapet wall above the waterproof layer is locally dismantled, and the load of edge components can be reduced; and the increased load of the steel structure cornice is counteracted to a certain extent.

The utility model relates to the technical field of pipe pile mechanical connection, and discloses a pin joint type and buckle type combined pipe pile mechanical connection structure which comprises a sleeve, an end plate is arranged in the middle of the sleeve, a steel pin rod is arranged on the inner wall of the end plate, a buckle groove is formed in the outer wall of the sleeve, a prestressed pipe pile is connected to the inner wall of the sleeve in a sleeved mode, and the prestressed pipe pile is connected with the buckle groove in a sleeved mode. A buckling groove is formed in the inner wall of the prestressed pipe pile, a buckling device is placed on the inner wall of the buckling groove, a first gasket is placed at the bottom of the buckling device, a second gasket is placed at the top of the buckling device, and a steel pin hole is formed in the inner wall of the prestressed pipe pile. According to the novel prefabricated pipe pile mechanical connecting structure combining pin joint type connection and buckle type connection, the problem of pipe pile connecting strength is solved, complicated and time-consuming welding or bolt reinforcement in the existing pile connecting process is avoided, the strength is sufficient, and meanwhile the pipe pile connecting efficiency is improved.

The utility model discloses a fast tunneling device for broken roofs, which relates to the technical field of tunneling devices and comprises a draw-off pump, a draw-off pipe is fixedly mounted on one side of the draw-off pump, a storage tank is fixedly mounted on one side of the draw-off pipe, and a diverter valve is fixedly mounted at the top of the draw-off pump. Flow dividing pipes are fixedly mounted in the two sides of the flow dividing valve, cross valves are fixedly mounted at the tops of the flow dividing pipes, and conveying pipes are fixedly mounted in the two sides and the top of each cross valve. According to the rapid tunneling device for the broken roof, chemical liquid in the storage tank can be pumped out through the draw-off pump and the draw-off pipe and then fed into the flow dividing valve, the liquid can be fed into the cross valve through the two flow dividing pipes after being divided through the flow dividing valve, and the liquid is fed into the spray head through the three conveying pipes after being divided through the cross valve; and finally, liquid can be sprayed out through a spray head, so that grouting reinforcement can be conducted on the broken top plate, and the broken top plate can be supported through a supporting plate.

According to the fabricated box type girder integrated bridge girder erection machine and the construction method, the box type girder of the bridge girder erection machine can be installed in a segmented mode, segments can be properly lengthened according to the bridge span, and the problem that on the premise of safe construction, the length of the girder of the bridge girder erection machine cannot be matched with girders of different spans is solved; when the bridge girder erection machine hoists the box girder, the girder, the crown block, the box girder and the like transversely move left and right synchronously, the first crown block can be anchored together through the girder anchoring device, the first box girder and the second supporting leg in a pin bearing mode, the first crown block is started to walk backwards, and the effect of applying counter-acting force to the girder is achieved. Enabling the main beam to move forwards to pass through the hole; by installing the first short supporting leg, the 90t front crown block and the 90t rear crown block in a combined mode, erecting construction of a prefabricated box girder can be completed, by installing the first long supporting leg, the 270t front crown block and the 90t rear crown block in a combined mode, erecting construction of a prefabricated pier column and a prefabricated cover beam can be completed, and the functions are more comprehensive.

A kind of parapet-based photovoltaic support anti typhoon structure, including parapet, main wind-resistant longitudinal beam, first column support, first column, second column support, second column and photovoltaic panel mounting frame;Parapet inside is provided with anchor pre-embedded steel plate, main wind-resistant longitudinal beam is fixed on anchor pre-embedded steel plate by anchor;First column support and second column support are spaced apart and arranged on the front and back, and are respectively connected on main wind-resistant longitudinal beam;The bottom of first column is connected on first column support, and the top is connected on the front side of photovoltaic panel mounting frame;The bottom of second column is connected on second column support, and the top is connected on the back side of photovoltaic panel mounting frame.Through main wind-resistant longitudinal beam and anchor pre-embedded steel plate, parapet and photovoltaic support are connected together, horizontal wind load is conducted to parapet by main wind-resistant longitudinal beam, substantially by parapet stability, the anti typhoon capacity of photovoltaic support is greatly improved, and the anti-overturning capacity and connection stability of photovoltaic support are enhanced.

The invention discloses an anti-reverse-connection circuit, a linear voltage regulator and an anti-reverse-connection method. The anti-reverse-connection circuit comprises a bias unit, a control unit and an induction unit. The N well where the sensing unit is located is arranged close to the N well where the power tube is located so as to sense current generated between a substrate of the power tube and the N well where the power tube is located when the latch-up effect of the power tube occurs, the voltage on the bias unit is adjusted when the current is sensed, and the control unit controls the anti-reverse tube to be turned off based on the voltage on the bias unit. According to the anti-reverse-connection circuit, the linear voltage regulator and the anti-reverse-connection method, the N well of the induction unit is placed near the N well of the power tube, the current generated by the circuit due to the latch-up effect at the reverse connection moment is detected, and the anti-reverse-connection tube is quickly turned off after the current is detected, so that the reverse current can be quickly and effectively blocked, and the anti-reverse-connection effect of the linear voltage regulator is improved. The latch-up effect caused by reverse connection is prevented from being further strengthened, and other circuits are effectively prevented from being interfered.

The invention discloses a conventional triaxial stress state teratology-physical energy ratio rockburst criterion method which is suitable for meeting # imgabs0 # in the actual stress state of a rock. The method comprises the following steps: step 1, determining the variable energy density Ws, c of a rock critical failure body under the condition that the confining pressure is equal to the conversion pressure; step 2, rock burst primary criterion; step 3, obtaining a result in Wslt; when Ws, c, under the confining pressure sigma3 borne by the rock, the critical brittle failure stress state energy ratio coefficient of the rock is lambda '; 4, solving an energy ratio coefficient lambda of the rock in an actual stress state when delta sigma does not reach a brittle fracture failure critical value; and step 5, re-judging rock burst. The rockburst released energy obtained by the method is used for judging whether the surrounding rock is a rockburst occurrence region or not, support is provided for tunnel rockburst prevention and control design, and the engineering construction safety is improved.

The utility model discloses a prepuce cutting anastomat which comprises a glans penis cover, a nail bin, a nail bin sleeve, a transmission sleeve, a handle, a handle connecting piece, a nail pushing sleeve, a reset spring, a middle sleeve, an adjusting nut, an annular cutter and anastomosis nails. The nail bin inner cavity hole is provided with an opening radially facing the axial center line of the nail bin cavity, flying wing limiting grooves are correspondingly formed in a set of opposite inner wall faces of the nail bin inner cavity hole, the anastomosis nail movably penetrates through the interior of the nail bin inner cavity hole, nail pushing pieces are annularly arranged at the left end of the nail pushing sleeve at intervals, and the left ends of the nail pushing pieces are correspondingly and movably inserted into the right end of the nail bin inner cavity hole. According to the prepuce cutting anastomat, thin-wall structures on the nail bin and the nail pushing sleeve injection mold are effectively reduced, a gap between a nail pushing piece on the nail pushing sleeve and the annular cutter is omitted, the thin-wall structures of the nail pushing sleeve injection mold are reduced, and the service life of the nail pushing sleeve injection mold is prolonged; the equipment investment cost is effectively reduced, and the production and processing efficiency and the product quality are improved.