80results about How to "Avoid the phenomenon of destruction" patented technology

The invention discloses a four-point bending beam-based bituminous mixture interlaminar shear strength testing device. A first support and a third support are arranged at the bottom of a loaded I-shaped beam, the first support is hinged to a first bending beam clamp, and the third support is hinged to a third bending beam clamp; a second support and a fourth support are arranged at the top of a base, the second support is hinged to a second bending beam clamp, and the fourth support is hinged to a fourth bending beam clamp. By regulating the positions of the bending beam clamps and the supports, the four-point bending beam-based bituminous mixture interlaminar shear strength testing device can guarantee that the vertical load applied onto a test piece corresponds to the designed length of a moment arm, and due to the interaction of vertical load and hinging, the interlaminar of a test piece only bears shearing load without the influence from bending moment stress, thus facilitating reasonable explanation and analysis on the interlaminar cementation situation of bituminous pavements in a pure shearing state, and simultaneously lightening the influence of rigidity of the bending beam clamp on testing results.

The invention relates to a seismic simulation shaking table control method used for compensating interaction between a test piece and a table top and improving the reproduction accuracy of seismic record. The control method is characterized in that control parameters of the shaking table are designed by taking all load forms as zero load forms based on the condition that the control parameters of the shaking table are designed by taking the test piece as rigid load; and the counter force generated by the test piece is utilized for compensating the interaction between the test piece and the table top in real time. Compared with a conventional control method, the method has the advantages of improving the stability of the system control to enable the seismic simulation shaking table to be more easily controlled; widening the system controllable frequency band to enable the test range of the shaking table to be wider; and improving the reproduction accuracy of the seismic record to enable the seismic simulation shaking table test to be more scientific.

The invention discloses a sheet for a heat exchanger and belongs to the technical field of heat exchange devices. The sheet is mainly composed of a base body and heat exchange flow channels machined in the base body through chemical etching, wherein each heat exchange flow channel is divided into a flow distributing channel, a converging channel and curved channels. The flow distributing channels are communicated with the converging channels through the curved channels, the free ends of the flow distributing channels are medium inlets, and the free ends of the converging channels are medium outlets. According to the sheet, the mode that the pair of converging channel and flow distributing channel correspond to multiple curved channels of each heat exchange flow channel is adopted, the heat exchange efficiency at an inlet and an outlet of the heat exchanger is enhanced, and the problem that the heat exchange efficiency is lowered due to increasing of the hydraulic radiuses of the flow channels of the heat exchanger is solved.

The invention discloses a real-time monitoring system for structural micro-deformation based on a laser range finder, and particularly relates to the field of building monitoring. The system comprisesa cloud platform, wherein the input end of the cloud platform is provided with a monitoring system, the output end of the cloud platform is provided with a monitoring terminal, the connection end ofthe monitoring system is provided with a GPRS module, the monitoring system comprises a laser range finder and a level measuring instrument, and the level measuring instrument is disposed on one sideof the laser range finder. The real-time monitoring system cooperates with the laser range finder and the level measuring instrument by marking points A, B, C and D to remotely monitor the micro-deformation of the building, is convenient to install without contacting the object to be measured to avoid the phenomenon that the building is damaged, real-time monitors the measured object, considers the influence of the laser range finder on the measurement result, reduces the measurement error, makes the value obtained by the electronic level measuring instrument more accurate, improves the measurement precision accurately, and calculates the deformation amount to make the data visual.

The invention relates to the field of gardening tools, and specifically relates to a flower pot fixing device. The device comprises a pedestal and a fixing mechanism. A central basin used for placing a flower pot is arranged at the center of the pedestal. A slide block is arranged in the central basin. The bottom end of the slide block is connected with the central basin through an elastic element. The two sides of the slide block are slidably connected with the side wall of the central basin. Slide slots are arranged on the pedestal, and communicate with the central basin. The slide slots comprise a left slide slot and a right slide slot. The left slide slot is slidably connected with a left clamp block, and the right slide slot is slidably connected with a right clamp block. A left connection rod is hinged between the left clamp block and the slide block. The left connection rod is positioned in the left slide slot. A right connection rod is hinged between the right clamp block and the slide block. The right connection rod is positioned in the right slide slot. According to existing gardening technology, flower pots are prone to tilting because there is no fixing device, such that a landscape might be damaged. The invention aims at solving the problem, and aims at providing the flower pot fixing device with which a flower pot can be placed fixedly.

The invention relates to a casting method of a thick-wall casting, in particular to a method of casting the thick-wall casting through sand insulation cold iron. The method sequentially comprises mould manufacturing, modeling, core manufacturing, mould assembling, pouring and falling sand cleaning. The method is characterized in that the sand insulation cold iron is placed on a thermal center portion, namely the thick portion of the casting before modeling, a boss of the sand insulation cold iron is used for fixation, and the boss of the sand insulation cold iron is placed close to a casting format of the casting. After the sand insulation cold iron is placed, quicksand is conducted, comprehensive tiny compaction of moulding sand is conducted through a vibration ramming platform, the mould is opened after being placed for two hours, and after mould assembling, iron liquid after nodulizing inoculation is poured into the mould. The method is unique in technique, can guarantee quality of the casting, shortens the production period, improves production efficiency, and saves production cost. The method not only saves the production cost, but also reduces casting surface cleaning work and work intensity.

The invention provides a method for anhydrous polishing of KDP crystals. High-precision and high-efficiency polishing of a KDP crystal material is realized. The anhydrous polishing process is dividedinto rough polishing and fine polishing, and a anhydrous polishing solution comprises methyl oleate, silicon carbide/aluminum oxide mixed abrasive particles and anhydrous sodium carbonate and is divided into an anhydrous rough polishing solution and an anhydrous fine polishing solution; and the difference between the anhydrous rough polishing solution and the anhydrous fine polishing solution is embodied in the viscosity of methyl oleate, the ratio, particle size and concentration of silicon carbide/aluminum oxide mixed abrasive particles, and the particle size and concentration of anhydrous sodium carbonate. Compared with other KDP crystal polishing methods, the method for anhydrous polishing of the KDP crystals has the advantages that a polishing liquid chemical reagent used in the method is non-toxic, low in harm and environmentally friendly, the phenomenon that the KDP crystals are deliquesced in contact with water to be damaged is effectively avoided in the polishing process, andthe processing quality of the surfaces of the KDP crystals is effectively improved.

The invention discloses a pressure dispersion type anchor rope stress state monitoring device based on a force passing plate, relates to a anchor rope stress state monitoring device, mainly solves the force passing problem when the prestress between an expansion plate and an anchor backing plate is stretched and drawn, and effectively avoids the problem that the anchor backing plate can be damaged when the anchor rope is stretched and drawn when the pressure dispersion type anchor rope stress state is monitored. The monitoring device comprises an anchor plate (10), an anchor rope force meter (20), an expansion plate (30), an anchor backing plate (40) and a force passing plate (40). The anchor backing plate (40), the force passing plate (50), the expansion plate (30), the anchor rope force meter (20) and the anchor plate (10) are connected in sequence. The force passing plate (50) is provided with a round ring bass hollow thick round plate. The invention can avoid the phenomena that the anchor backing plate (40) can be damaged, and is suitable for monitoring the artificial side slopes or sliding slopes reinforced by the pressure dispersion anchor rope in the projects, such as high ways, railways, mines, hydropower stations, and the like.

The invention belongs to the technical field of bridges and discloses an anti-seismic device with an overturn-preventing function for a road bridge. The anti-seismic device comprises a bridge body. Anupper bridge pier is inserted in the bottom of the bridge body; an inner cavity of the bridge body is filled with an elastic filling layer; an inner cavity of the elastic filling layer is provided with a seismic-reduction combined plate; the seismic-reduction combined plate is installed at the top end of the upper bridge pier; a transverse seismic-reduction mechanism is arranged at the bottom ofthe bridge body and connected to the outer wall of the upper bridge pier in a sleeving mode; a connecting pier plate is arranged at the bottom of the upper bridge pier; a lower bridge pier is arrangedat the bottom of the connecting pier plate; a base is arranged at the bottom of the lower bridge pier; and overturn-preventing mechanisms are arranged between the bridge body and the connecting pierplate as well as between the connecting pier plate and the base correspondingly. The good protecting effect on the road bridge is achieved; the phenomenon that the bridge body is inclined due to unbalanced force bearing can be also prevented effectively even during an earthquake; the structure is simple, the anti-seismic effect of the road bridge is strengthened greatly, and the service life of the road bridge is prolonged greatly.

The invention discloses a driving device for internal inspection of magnetic flux leakage of an industrial pipeline and a using method of the driving device. The device comprises a driving power unit, a guiding and centering unit and a pipeline abutting and clamping unit, wherein the driving power unit is connected with one end of the guiding and centering unit and is used for generating a high-pressure flowing medium; the guiding and centering unit comprises an instrument cover and is used for guiding and centering an internal inspection device, and the internal inspection device enters the industrial pipeline through the instrument cover under the action of the high-pressure flowing medium; and the pipeline abutting and clamping unit is connected with the other end of the guiding and centering unit and is used for realizing seamless abutment of the guiding and centering unit and the pipeline. The method comprises the steps of arranging one driving device at the inlet end of an inspected pipeline to realize transmitting and driving functions of the internal inspection device and arranging the other driving device at the outlet end of the inspected pipeline to realize a receiving function of the internal inspection device. The driving device is simple, convenient and flexible in operation, the damage rate of the internal inspection device can be effectively reduced, and the transmitting, driving and receiving integrated function of the internal inspection device for the pipeline is realized.

The invention discloses a combined type antenna beautifying cover with a hollow sandwiched structure. The combined type antenna beautifying cover comprises more than two antenna cover assemblies, wherein each antenna cover assembly comprises a hollow sandwiched wave-transmission region and solid glass steel connecting regions arranged at the two ends of the hollow sandwiched wave-transmission region; special-shaped inserting slot connecting pieces are arranged on the solid glass steel connecting regions; all antenna cover assemblies are connected in sequence through the special-shaped inserting slot connecting pieces to form a closed structure; and the hollow sandwiched wave-transmission region consists of a hollow sandwiched fabric layer and reinforced fabric layers which are compounded on the upper and lower surfaces of the hollow sandwiched fabric layer. The antenna beautifying cover provided by the invention has excellent broadband wave-transmission property and rapid combination function; delamination resistance and other mechanical properties of the antenna cover are ensured; a phenomenon of damage of the antenna cover caused by wind load in the use process can be avoided; the antenna beautifying cover has excellent characteristics of low loss, high wave transmissivity and other electrical properties, and light weight and high strength; and meanwhile, the problem that rapid connection of the existing antenna cover with a hollow sandwiched structure cannot be realized in the prior art is solved.

The invention discloses a buffering and energy dissipation device for slope protection and belongs to the field of slope protection. The device is mainly composed of a chuck, a casing pipe used for accommodating the chuck, and a clamp, wherein the two ends of a through hole in the casing pipe is in different sizes, the larger end serves as a casing pipe head, the smaller end serves as a casing pipe body, and in this way, the chuck can only be placed in through the casing pipe head; the chuck is a conical cylinder, and the size of an internal channel of the chuck is identical with that of a rope; the clamp is composed of an upper clamp body and a lower clamp body, the structure and size of the upper clamp body are totally identical with those of the lower clamp body, the upper clamp body is mainly composed of a strip-shaped plate and a clamping part, a fixing hole is formed in one end of the strip-shaped plate, the other end of the strip-shaped plate is fixedly connected with the clamping part which can be arranged on the casing pipe head in a sleeving mode, a groove is formed in the clamping part, and the size of the groove is matched with the external profile of the casing pipe head. By the adoption of the device, damage caused by high local stress of a slope protection system and overloading of other components in the system can be avoided.

The invention belongs to the technical field of 5G signals, and particularly relates to 5G signal base station equipment capable of providing self-protection according to the external environment. A supporting frame is fixedly connected to the upper surface of a supporting seat, a signal seat is fixedly connected to the upper surface of the supporting frame, and mounting seats are fixedly connected to the left side and the right side of the signal seat. A power source body is fixedly connected to the interior of the signal seat, an air bag base is fixedly connected to the upper surface of thepower source body, a ratchet plate is movably connected to a position, located in the signal seat, of the upper surface of the air bag base, a buffer base is movably connected to the upper surface ofthe ratchet plate, and rotating gears are engaged with the left side and the right side of the ratchet plate correspondingly. And the outer surfaces of the rotating gears are rotationally connected with an L-shaped rod, and one end of the L-shaped rod penetrates through the interior of a protective seat. When the base station equipment is used, the angle between adjacent signal plates is increased, so that the signal plates can better receive signals, and the phenomenon that the signals of the base station are not good in rainy days is solved.

The invention discloses a blood stirring device, comprising a stirring seat, a base and a fixing frame, a groove is arranged in the middle of the upper surface of the base, the stirring seat is arranged in the groove on the upper surface of the base, and a The motor, the outer ring of the lower end of the stirring seat is fixed with a fixed ring. In this device, the motor drives the stirring seat to rotate to mix the trace blood in the glass tube, which achieves the effect of stirring, saves time and effort, and the blood in the glass tube does not mix with the In contact with other devices, this device is equipped with a limit mechanism for the glass tube up, down, left, and right. The glass tube can rotate stably on the stirring seat. The height can be adjusted at any time according to the actual length of the glass tube, and the scope of application is wide. The blood only relies on the centrifugal force when the stirring seat rotates to achieve the stirring effect, which avoids the phenomenon that the internal structure of the blood is destroyed, and is suitable for promotion.

The invention provides a high and low temperature resistance antibacterial tube for conveying domestic drinking water. As the inner and outer layers are mainly made of a same polypropylene raw material, the phenomenon that a composite tube is destroyed due to department can be prevented; the outer layer is white, and the inner layer is ash blond, thus the self light transmittance of a PP-R tube is effectively improved under the condition of keeping white appearance and the self toughness of plastic, and bacteria are prevented from breeding; the material of the inner layer contains a high-temperature material so as to enable a product not to be liable in deforming and breaking at high and low temperatures; and the material of the inner layer contains mineral powder, and the mineral powder contains tourmaline powder which is a polar crystalline solid with a special structure, thus the material of the inner layer can release electric ions self for a long time and also release air anions and far infrared rays permanently. Therefore, when a water source accesses the product, by virtue of the anions and the infrared rays released by the material of the inner layer, residual chlorine in water can be eliminated, breeding of harmful bacteria is inhibited, organic compounds, inorganic compounds and heavy metal pollution are purified, water molecular motion is accelerated, and the content of mineral substances in water is also increased.

The invention relates to the technical field of switchboards, and discloses an intelligent distribution box auxiliary device capable of automatically changing a protection form according to an external environment. The device comprises a distribution box base, the interior of the distribution box base is fixedly connected with a protection base, the interior of the protection base is movably connected with a movable rod, and the interior of the movable rod is movably connected with an extension spring. One end of the movable rod is movably connected with a rotating base, and the other end of the movable rod is movably connected with a movable gear; the outer surface of the movable gear is movably connected with a first ratchet plate, one side of the first ratchet plate is movably connected with a compression rod, and the interior of the compression rod is movably connected with a compression spring; and the outer surface of the compression rod is rotationally connected with a lifting rod. When the power distribution box is used, the winding cloth in the winding disc is unfolded, so that a certain protection effect on the power distribution box is achieved, the problem that the power distribution box is damaged by rainwater is avoided, and the effect of automatically protecting the power distribution box in rainy days is achieved.