46results about How to "Increased maintenance difficulty" patented technology

The invention discloses a post-tensioning prestress type self-centering steel frame structure. The post-tensioning prestress type self-centering steel frame structure comprises at least one structural unit. Each structural unit comprises two steel frame columns, a T-shaped steel beam, a self-centering connecting piece and friction energy consumption parts, wherein the T-shaped steel beam is used for connecting the upper ends of the steel frame columns, the self-centering connecting piece is located on the lower side of the T-shaped steel beam and used for connecting the steel frame columns, and the friction energy consumption parts are located on the lower portion of the self-centering connecting piece. Each self-centering connecting piece comprises an inner sleeve, an outer sleeve, end plates, pretensioning rods and connectors, wherein the inner sleeve is sleeved with the outer sleeve, the end plates are located at the two ends of the sleeves, the pretensioning rods are arranged in the inner sleeve and anchored on the end plates, and the connectors are connected with the ends of the inner sleeve. Each friction energy consumption part comprises an inner friction plate, an outer friction plate and a friction gasket, wherein the inner friction plate is connected with the inner sleeve, the outer friction plate is connected with the lower side face of the outer sleeve, the friction gasket is arranged between the inner friction plate and the outer friction plate, and the sliding direction of the inner friction plate and the sliding direction of the outer friction plate are arranged in the axial direction of the outer sleeve. Column space is kept unchanged when the columns are laterally deformed, and the strength, the rigidity and the ductility of the structure can be flexibly and independently adjusted and controlled in the design process.

The invention relates to a method for testing reaction torque. The method comprises the following steps of: fixing a stator shaft of a tested object on a static torque sensor through a coupler to acquire an electrical signal corresponding to the accurate micro torque value of the tested object; carrying out signal conditioning and data acquisition to the electric signal output by the sensor to accurately acquire torque data; and processing related data by a computer to acquire start torque, load torque and friction torque and calculating inertia time and synchronizing time. The reaction torque tester for realizing the method is provided with the static torque sensor, the coupler is fixed on the static torque sensor to acquire the accurate micro torque value of the tested object, and the accurate micro torque sensor is sequentially connected with signal conditioning and data acquisition systems and accessed in a computer processing system. By analyzing and researching tested characteristics and the test principle, the static torque sensor is selected to acquire the accurate micro torque value and accurately acquire the torque data through signal conditioning and data acquisition.

The invention relates to a LED street lamp, in particular to a tubular LED street lamp. The LED street lamp comprises a lamp body and is characterized in that the lamp body comprises a head body, a middle body and a tail body; the head body and the tail body are respectively connected with both ends of the middle body; the head body is provided with a hole position used for connecting with the lamp stem of the LED street lamp; the front surface of the middle body is provided with an open lamp tube cavity; the inverse surface of the middle body is provided with a head dissipation hole used for communicating the lamp tube cavity with the external space; the LED street lamp also comprises a group of lamp tubes which are arranged in the lamp tube cavity. The invention provides a LED street lamp which has replaceable lamp tubes. The invention also provides a LED street lamp which has good heat dissipation performance.

The invention discloses a transverse type pipeline trash blocking device. The transverse type pipeline trash blocking device comprises a main body, a cover plate, an external short pipe and a trash blocking filter element, wherein the trash blocking filter element is used for filtering suspended matters; the main body is provided with a water inlet, a water outlet, a filter element mounting port and a filter element support plate, wherein the filter element support plate is used for supporting and fixing the trash blocking filter element, and the water inlet is arranged on the side wall of themain body, and is provided with a first connecting flange; the water outlet is arranged at one end of the main body, and is provided with a second connecting flange; the filter element mounting portis arranged at the other end of the main body, and is provided with a third connecting flange; the trash blocking filter element and the cover plate are connected by the third connecting flange, and the main body and the external short pipe are connected by the second connecting flange; the trash blocking filter element is provided with a trash blocking screen pipe and an inner support skeleton, and the inner support skeleton is used for supporting the trash blocking screen pipe. The invention further discloses a sewage recycling system using the transverse type pipeline trash blocking device.The transverse type pipeline trash blocking device has the advantages that the transverse type pipeline trash blocking device can be used as the sewage treatment pretreatment unit, and be well used for replacing the traditional filtering device; by adopting the transverse installation type, the overhauling and the replacement of the filter element can be favorably performed.

The invention discloses a controlling device of a crude oil engine accelerator. The controlling device includes a shifting-up inching switch, a shifting-downinching switch, an engine accelerator controlling device and an engine controller. The engine accelerator controlling device includes a gear signal processing module, a special controller and a CAN bus module, wherein the gear signal processing module, the special controller and the CAN bus module are connected in sequence. The output ends of the shifting-up inching switch and the shifting-down inching switch are connected with the gear signal processing module. The gear signal processing module includes a pulse signal receiver, a photoelectric coupler and a filter. The gear signal processing module is used for converting pulse signalstransmitted from the shifting-up inching switch or the shifting-down inching switch into digital signals. The CAN bus module is connected with the engine controller. The special controller is used for extracting rotating speed values of corresponding gears according to the digital signals transmitted from the gear signal processing module and converting the rotating speed values into CAN messageinformation. The CAN message information is transmitted to the engine controller through the CAN bus module to control the engine to run at the corresponding rotating speed.

The invention discloses packaging carton printing equipment and a working method thereof and relates to the technical field of printing equipment. The packaging carton printing equipment comprises a shell, the right side of the shell is provided with a material inlet, the shell is internally and fixedly provided with a conveying mechanism, the surface of the conveying mechanism is fixedly providedwith two symmetrically-arranged annular guide belts, positions, inside the shell, corresponding to the upper portion of the conveying mechanism are fixedly provided with a flattening structure, a printing mechanism and an ink-removing drying mechanism from right to left correspondingly, and the positions, of the top face of the shell, corresponding to the flattening structure, the printing mechanism and the ink-removing drying mechanism are fixedly provided with a negative pressure dust collector, an air purifier and a hot air supply mechanism correspondingly. According to the packaging carton printing equipment and the working method thereof, by means of the design of the printing mechanism, the flattening structure and the ink-removing drying mechanism, the packaging carton printing equipment is made to be capable of finishing the paperboard surface pre-flattening, surface printing and printing ink drying work in sequence in a form of an automatic assembly line, and by means of addition and optimization of the process procedure, the printing efficiency and the printing effect of the packaging carton printing equipment on paperboards are effectively improved.

The invention relates to a high-performance range hood. The high-performance range hood comprises a smoke collecting cover with an air inlet, the smoke collecting cover is internally provided with a rectification plate located below the air inlet, an air box is arranged above the smoke collecting cover, and the air box comprises a shell and a fan system arranged in the shell. The high-performancerange hood is characterized in that an auxiliary air inlet is formed in the side wall of the lower part of the shell and can communicate with an air inlet port of the fan system, and in a working state, the auxiliary air inlet is at least opposite to a vortex formed by airflow outside the shell. Main airflow and auxiliary airflow are formed outside the range hood, and forming of the gas vortex isavoided. Inlet air of the fan system is supplemented through the auxiliary air inlet, lampblack floating to the upper part of the smoke collecting cover is captured again, thus the lampblack suction effect of the range hood is improved, the situation that the lampblack is accumulated on the outer surface of the shell is avoided, and the range hood is conveniently cleaned and maintained daily.

The invention discloses a container truck body measuring method, which comprises the following steps: 1) when a container body of a container truck body enters an acquisition region of an image acquisition device, taking a plurality of partial pictures of the external portion of the container body through the image acquisition device based on a preset frequency, and meanwhile, obtaining a plurality of partial X-ray pictures of the inner portion of the container body through an X-ray imaging system based on the preset frequency; 2) obtaining vehicle speed in any time section; 3) combining the plurality of partial pictures to form an external whole picture of the container body; 4) carrying out combining to form an internal whole picture of the container body; and 5)outputting the external whole picture of the step 3) and the internal whole picture of the step 4) and carrying out comparison display. The invention is to provide the container truck body measuring method and the container truck body measuring system, which can effectively obtain the overall picture of the container and enables the container to be accurately matched with objects in the container, and can carry out accurate positioning on the objects in the container.

The invention discloses a post-tensioning prestress type self-centering steel frame structure. The post-tensioning prestress type self-centering steel frame structure comprises at least one structural unit. Each structural unit comprises two steel frame columns, a T-shaped steel beam, a self-centering connecting piece and friction energy consumption parts, wherein the T-shaped steel beam is used for connecting the upper ends of the steel frame columns, the self-centering connecting piece is located on the lower side of the T-shaped steel beam and used for connecting the steel frame columns, and the friction energy consumption parts are located on the lower portion of the self-centering connecting piece. Each self-centering connecting piece comprises an inner sleeve, an outer sleeve, end plates, pretensioning rods and connectors, wherein the inner sleeve is sleeved with the outer sleeve, the end plates are located at the two ends of the sleeves, the pretensioning rods are arranged in the inner sleeve and anchored on the end plates, and the connectors are connected with the ends of the inner sleeve. Each friction energy consumption part comprises an inner friction plate, an outer friction plate and a friction gasket, wherein the inner friction plate is connected with the inner sleeve, the outer friction plate is connected with the lower side face of the outer sleeve, the friction gasket is arranged between the inner friction plate and the outer friction plate, and the sliding direction of the inner friction plate and the sliding direction of the outer friction plate are arranged in the axial direction of the outer sleeve. Column space is kept unchanged when the columns are laterally deformed, and the strength, the rigidity and the ductility of the structure can be flexibly and independently adjusted and controlled in the design process.

The invention relates to a LED street lamp, in particular to a tubular LED street lamp. The LED street lamp comprises a lamp body and is characterized in that the lamp body comprises a head body, a middle body and a tail body; the head body and the tail body are respectively connected with both ends of the middle body; the head body is provided with a hole position used for connecting with the lamp stem of the LED street lamp; the front surface of the middle body is provided with an open lamp tube cavity; the inverse surface of the middle body is provided with a head dissipation hole used forcommunicating the lamp tube cavity with the external space; the LED street lamp also comprises a group of lamp tubes which are arranged in the lamp tube cavity. The invention provides a LED street lamp which has replaceable lamp tubes. The invention also provides a LED street lamp which has good heat dissipation performance.

The invention is usually used in the ceramics and relates to a level dryer (1) with one or more drying lays and a drying method acquired through the dryer, wherein, a roller (2) used for delivering aproduct (4) is also used to blow the hot air into a drying room. The roller (2) has a plurality of holes (6), and is connected to a hot air supplying unit (1b). The ceramic product (4) is arranged onthe roller (2) with holes (6) directly, and is separated from the roller through two or more lantern ring (7) or a salient. If the material waiting for drying is must be separated from a blowing hole,the roller(2) can be arranged grooves(8;9) inside at the region with the hot air exhaust holes(6).

The invention provides a design method of a high-lift centrifugal pump for conveying liquid easy to vaporize, and belongs to the field of centrifugal pumps. In order to overcome the technical defects that a rotor is difficult to overhaul and a mechanical seal needs to seal high pressure of a pump outlet of a high-lift centrifugal pump for conveying liquid easy to vaporize, the technical scheme is that a vertical barrel pump with one impeller is arranged underground, the depth of an inlet of the impeller under the ground needs to meet the anti-cavitation requirement, and an outlet of the pump is connected with an inlet of a pitot tube pump with one impeller on the ground. The design method comprises the steps: 1, calculating the depth h1 from the center line of an inlet connecting pipe of the vertical barrel pump to an impeller inlet through a formula 1; 2, increasing the pressure of an inlet of the pitot tube pump to prevent cavitation, and calculating the lift H1 of the vertical barrel pump through a formula 2; 3, calculating the lift H2 of the pitot tube pump, wherein the cross section area of the outer flow channel of the barrel is 4-4.5 times of the cross section area of the inner flow channel. The design method is further suitable for a unit formed by connecting an underground first-stage vertical barrel pump and an axial split type multi-stage centrifugal pump in series, wherein the axial split type multi-stage centrifugal pump is large in flow, high in rotating speed, large in NPSHr and easy to overhaul.