104results about How to "Reduce vibration effects" patented technology

The invention discloses welding equipment for production of a refrigeration temperature controller of a refrigeration house, and relates to the technical field of welding equipment.The welding equipment comprises a cabinet and a machining mechanism, the machining mechanism comprises a connecting sliding block and an air cylinder, a hydraulic cylinder is installed on the side of the outer side of the connecting sliding block, and a welding main machine is fixedly installed at the telescopic end of the hydraulic cylinder; a welding gun is installed at the bottom of the welding main machine, a heat preservation assembly is installed on the outer side, close to the bottom, of the welding gun and comprises an annular sliding part, a cylinder is fixedly installed on the edge side of the outer side of the annular sliding part, and a reset spring is fixedly installed between the top of the cylinder and the conical face of the top of the outer side of the welding gun. A heat conducting piece is fixedly installed on the side of the inner cavity of the cylinder and close to the edge of the annular sliding piece, and a clamping piece is fixedly installed on the outer circle face of the cylinder and close to the bottom through a connecting rod. According to the welding equipment for production of the refrigeration temperature controller of the refrigeration house, the heat preservation effect is achieved, heat preservation can be conducted, the situation that the temperature difference is too large is not likely to occur, and the welding quality is high.

The invention relates to the technical field of welding, in particular to a welding method. According to the method provided by the invention, when the length of the wire harness is less than or equal to 500mm and the second end and the second terminal of the wire harness are welded, the first end of the wire harness is slightly influenced by vibration, and the tension value of the first terminal at the first end and the wire harness is reduced, so that after the welding parameters are adjusted, on one hand, the welding tension effect of the second end is reduced; on the other hand, vibration generated during welding is reduced, so that damage to the welding position of the first end is reduced, and tension values of the front end and the rear end can be balanced. In addition, the first end of the wire harness welded with the first terminal is clamped in the welding process, so that vibration generated when the second end of the wire harness is welded is counteracted by the clamping mechanism, propagation of the vibration to the first end is greatly reduced, and the influence on the first end is reduced.

The invention relates to the technical field of energy storage equipment, and particularly discloses a portable battery energy storage device which comprises a shell assembly, the shell assembly comprises a battery shell, a battery groove is formed in the battery shell, a handle groove is formed in the top of the battery shell, and a portable frame is installed in the handle groove; a semicircular groove is formed in the top of the battery shell and located on the inner side of the handle groove, and placement grooves are formed in the two sides of the battery shell; according to the invention, through the arrangement of the solar panel frame and the damping assembly, the solar panel frame can be reversely operated according to the unfolding installation process after use, so that the extension plate is stored in the inner side of the solar panel frame, and at the moment, the unfolded solar panel is stored in the inner side, so that scratches and collisions in the transportation process are avoided; and in case of vibration, the damping assembly applies buffering force to the extension plate and the solar panel frame, and the third spring reduces the vibration effect on the extension plate and the solar panel frame, so that the damping protection effect is realized.

The invention relates to a flexible vibration self-adaption wind turbine blade which comprises a blade body, the rear edge of the blade body is flexibly connected with a flap through an inflatable expansion body, and inflatable cavities are formed in the positions, on the two sides of a chord line, of the expansion body. The chambers located on the two sides of the chord line swing along with the flap to change the compression degree so as to adjust the counter-acting force of the expansion body on the flap in a self-adaptive mode, and the flap angle between the blade body and the flap tends to be stable. The device is simple and compact in structure, light in self weight, high in strength, foldable and rapid to mount; when the blade works and the wind power is large, the flexible structure is affected by the wind power and can be bent upwards, and the stability of the whole blade is guaranteed. When the wind power is reduced, the flexible structure is affected by the pressure difference of the two air chambers and can be bent downwards, the operation efficiency of the blade at the low wind speed can be improved, and the effects of increasing efficiency and expanding stability are achieved.

The invention discloses a transmission tower modular foundation with multi-dimensional energy dissipation function and an energy dissipation method thereof, which relates to the technical field of transmission line foundation, including: a base plate, a step module and a column; the step module includes a vibration reduction module, and the vibration reduction module includes an energy dissipation top layer, an energy dissipation middle layer and an energy dissipation lower layer; in the energy dissipation top layer, the vibration of the elastic rope is stimulated by the collision of the ball and the rotation of the turntable, and the reciprocating motion of the elastic rope is driven by the elastic rope retracting device to dissipate energy; in the energy dissipation middle layer, the vibration of the elastic rope drives the annular rack to move linearly, thereby driving the rotation of the blade through the spiral pair and cutting the viscous damping liquid to dissipate energy; in the energy dissipation lower layer, the sliding of the slider drives the movement of the mass block in the shear thickening liquid and drives the vibration of the elastic rope to dissipate energy. While ensuring that the transmission tower foundation is easy to transport and install, the earthquake resistance and wind vibration resistance of the transmission tower foundation are improved, the transmission tower line is assisted to dissipate wind vibration energy, and the damage to the transmission tower caused by vibration is reduced.

The invention relates to the technical field of mini-tillers, in particular to a floating mini-tiller tilling device which comprises a tilling device body, a main machine frame is arranged on the tilling device body, one end of the main machine frame is hinged to a movable connecting plate, and a floating positioning frame is fixed to the outer side of the movable connecting plate. A floating adjusting frame is movably clamped to the inner side of the floating positioning frame, floating damping frames are symmetrically mounted on the two sides of the lower end of the floating adjusting frame, a floating mounting frame connected with the floating damping frames is arranged below the floating positioning frame, and a transmission mechanism is mounted above the side face of the floating mounting frame. And a rotary tillage tool rest which is in chain transmission with the transmission mechanism is mounted below the floating mounting frame. According to the floating type tillage device of the mini-tiller, the rotary tillage tool rest can be subjected to lifting adjustment, the tillage depth is controlled, the rotary tillage tool rest can float within a certain range after being adjusted, the uniformity of tillage is ensured, the overall structure is stable and reliable, the vibration influence can be relieved, and the service life of the tillage device is prolonged.

The invention discloses a metal target machining forming device and method, and relates to the technical field of metal target machining, the forming device comprises a workbench, and the workbench is provided with a positioning table used for bearing a metal target; a plurality of groups of grinding rollers for positioning the metal target material are distributed on the positioning table in a circumferential array manner, each grinding roller is connected with a first rotating module for driving the grinding roller to synchronously rotate along the outer edge surface of the metal target material, and each grinding roller is also connected with a second rotating module for driving the grinding roller to rotate; an adjusting module is further arranged on the positioning table and used for adjusting the grinding rollers to synchronously move in the direction close to or away from the axis end of the metal target; a measuring module is further arranged on each grinding roller and is used for detecting the distance between the two groups of grinding rollers which are oppositely arranged in real time; the metal target does not need to be detached for measurement in the forming machining process, the synchronous detection effect can be achieved in the grinding process, and the machining efficiency is effectively improved.

The utility model discloses a concrete supporting beam soil falling prevention device, which relates to the field of building construction devices, and comprises a supporting plate mechanism and a traction hanging ring arranged on the supporting plate mechanism, the supporting plate mechanism comprises a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate are both inclined downwards, and the traction hanging ring is arranged on the first supporting plate. The upper end of the first supporting plate is connected with the upper end of the second supporting plate, the first supporting plate and the second supporting plate jointly form a covering space with a downward opening, and the lower end of the supporting plate mechanism can cover a building supporting beam; when the supporting plate mechanism covers the building supporting beam, the supporting plate mechanism is isolated from the building supporting beam through a plurality of rolling wheels, and the rolling wheels are installed on the supporting plate mechanism. The first supporting plate and the second supporting plate incline downwards and then are combined, and are matched with the rolling wheels and the traction hanging ring, so that the aim of avoiding the falling risk after accumulation of muck on the building supporting beam due to the fact that the muck cannot be cleared away in time is achieved.

This utility model discloses a high-temperature automatic testing device for laser components, belonging to the field of electronic technology. Key technical features include a mounting backplate, with the laser body fixedly connected to the top of the backplate. An adjustable support mechanism is movably connected to the rear of the backplate, and an elastic mounting mechanism is movably connected to the front of the adjustable support mechanism. This allows for compact installation of small lasers by using a support plate on the rear of the backplate to support the rotation of the main shaft, and mounting an infrared thermometer on the front. The temperature measurement position and spacing are adjusted by rotating the support plate, adapting to complex and empty spaces. Furthermore, the device employs a rotating connection structure between the mounting box and the bearing block, along with an elastic mounting assembly consisting of a contact rod, telescopic column, compression spring, and I-shaped clamping plate, enabling quick installation and removal of the infrared thermometer. The elastic connection also reduces vibration impact, effectively solving the problems of fixed installation position, non-adjustable spacing, and inconvenient installation and removal in existing devices.

The utility model provides a kind of vibration platform structure of spherical graphite vibration grinding machine, belong to graphite vibration grinding machine technical field, the vibration platform structure of this spherical graphite vibration grinding machine, it include: vibration platform body, vibration excitation device, elastic support component, grinding vessel, transmission connecting mechanism and damping control device, vibration platform body is rectangular plate, and upper surface central fixed spherical grinding vessel;Excitation motor is fixed in the center of bottom surface, output shaft is coaxial with eccentric wheel component, and main, vice eccentric wheel is divided on the upper and lower ends of rotating shaft;Each elastic support unit is arranged in four corners, including support seat and helical compression spring, support seat bolt is fixed bottom surface, and spring lower end is connected ground surface;Vibration is transmitted to grinding vessel by platform by transmission connecting mechanism;The utility model can solve the technical problems that vibration transmission efficiency is low, grinding uniformity is poor and equipment stability is insufficient in the vibration platform structure of spherical graphite vibration grinding equipment in the prior art.

The present application mainly relates to a headset, wherein the movement housing is used to contact the user's skin, the transducer device enables the skin contact area of ​​the movement housing to generate bone conduction sound under the action of the transducer device, the diaphragm divides the accommodating cavity into a front cavity and a rear cavity, the movement housing is provided with a sound outlet hole connected to the rear cavity, and the diaphragm generates air conduction sound transmitted to the human ear through the sound outlet hole during the relative movement of the transducer device and the movement housing; the diaphragm body includes an integrally connected first connection part, a folded part, and a second connection part, the first connection part is connected to the transducer device, the second connection part is arranged around the periphery of the first connection part, the second connection part is connected to the movement housing, and the folded part forms a concave area, the half-depth width W1 of the concave area, the spacing distance W2 between the first connection part and the second connection part, 0.2≤W1 / W2≤0.6. The present application forms a corresponding concave area on the diaphragm body, which can increase the deformation ability of the diaphragm along the vibration direction of the transducer device and reduce the influence of the diaphragm on the vibration of the transducer device.

The utility model relates to the technical field of electrode cap machining equipment, in particular to an electrode cap secondary grinding device which comprises a support, a cutter box used for grinding an electrode cap and a motor used for driving a cutter head in the cutter box to rotate are installed on the upper portion of the support, and a sharpening blade is installed in the cutter head. The upper portion of the support is further provided with a grinding piece used for conducting secondary grinding on the ground electrode cap and a power driving device used for driving the grinding piece to rotate. The electrode cap grinding device has the advantages of being good in grinding effect and few in residual impurity of the ground electrode cap.

The invention relates to the technical field of aerial photography space planning, in particular to an aerial photography measurement auxiliary device for territorial space planning, which comprises an unmanned aerial vehicle main body, the top of the unmanned aerial vehicle main body is fixedly connected with an auxiliary frame, and the outer side of the unmanned aerial vehicle main body is fixedly connected with an inclined frame. According to the aerial photography measurement auxiliary device for territorial space planning provided by the invention, the unmanned aerial vehicle main body is arranged as a carrier, internal components are mounted through the sub-frame, the fan blade position of the unmanned aerial vehicle main body can be conveniently protected through the arranged inclined frame, personnel are prevented from being hurt when being in contact with the unmanned aerial vehicle main body, and the working efficiency of the unmanned aerial vehicle main body is improved. The arranged suspension structure is used for connecting the unmanned aerial vehicle main body and the equipment frame, the equipment frame is used for installing acquisition and detection equipment through the balancing frame, the outer-layer frame is matched with the inner-layer frame, and the inner-layer frame can be drawn out or retracted from the inner side of the outer-layer frame, so that the occupied space during equipment installation or position adjustment is adjusted.

The present invention discloses a high-strength car seat floor lock assembly, which relates to the technical field of car seats and includes a shell, a push-pull mechanism, and a clamping mechanism. The push-pull mechanism includes a notch and a first support shaft. A push cam block is rotatably installed in the middle of the outer cylindrical surface of the first support shaft. An electric telescopic rod is hinged on the outer side of the shell and near the notch. A tip protrusion is installed in the middle of the outer side of the push cam block. A top material block is fixedly installed on the outer side of the push cam block and near the tip protrusion. The clamping mechanism includes a second support shaft. A swing connection block is rotatably installed in the middle of the outer cylindrical surface of the second support shaft. A spring is installed between the top of the swing connection block and the top of the push cam block. A clamping lock hook is installed at the bottom of the swing connection block. The high-strength car seat floor lock assembly achieves the effect of preventing loosening, is firmly clamped, reduces the influence of external force and vibration, is not easy to loosen, and is flexible, safe and reliable to use.

This utility model relates to the field of mining engineering equipment technology, and in particular to an intelligent control device for mine filling. It includes a base, a main control box fixedly connected to the top of the base, and two conveying barrels mirror-distributed around the main control box. Flange pipes communicating with the inner walls of the two conveying barrels are fixedly connected to the tops of the two conveying barrels. Flow meters are fixedly connected to the inner walls of the flange pipes. A mixing tank is installed on the outer wall of the base, and a stirring rod is rotatably connected to the inner wall of the mixing tank. A liquid level sensor is fixedly connected to the inner wall of the mixing tank. The flow meter collects the material conveying volume of the main material bin and the auxiliary material bin in real time. The controller automatically compares the actual conveying ratio with the set value, avoiding the mixing ratio error caused by manual observation of material level and manual speed adjustment, ensuring that the ratio of main material to auxiliary material remains stable within a reasonable range. A concentration sensor monitors the mixing state of the filling slurry in the mixing tank, ensuring the basic quality of the filling slurry and improving the strength stability of the filling material.

The utility model discloses a capacitance microphone, which comprises a mounting seat, a mounting frame is hinged to the top of the mounting seat, a microphone is arranged on the inner side of the mounting frame, a plurality of mounting buckles are arranged on the inner side of the mounting frame, and a plurality of mounting buckles corresponding to the mounting buckles are arranged on the outer side of the microphone. The installation buckle is connected with the installation buckle through an elastic component, the elastic component is an elastic line or an elastic rope, the top of the installation base is hinged to the installation frame through a hinge screw, and the hinge screw is in threaded connection with a manual adjusting screw. The microphone is convenient to mount, when vibration is generated outside, the vibration is transmitted to the elastic component through the mounting seat and the mounting frame, and the vibration is retarded by the elastic component and then transmitted to the microphone due to the elasticity of the elastic component, so that the influence of the external vibration on the microphone is greatly reduced, and the service life of the microphone is prolonged. The microphone is ensured not to influence audio receiving signals due to vibration, and the microphone is ensured to output clear sound.

The utility model provides a water flow rate monitoring device for hydroelectric exploration, which relates to the technical field of hydroelectric exploration, and adopts the technical scheme that an impeller is arranged on a rotating shaft, the rotating shaft is rotatably connected with a connecting plate, the connecting plate is provided with a second connecting block, the second connecting block is fixedly provided with a rotating speed sensor, and the rotating speed sensor is radially aligned with the rotating shaft; the rotating speed sensor is in communication connection with an external system; the upper end of the connecting plate is connected with a second moving block, the upper end of the second moving block is connected with a lifting device, the lifting device is connected with a moving platform through a vertical rod, and the moving platform is arranged on the bottom plate.

The invention discloses a method for connecting a ceramic-based composite material lens cone and an optical instrument. The method comprises the following steps: S1, forming a mounting hole in a mounting interface surface of the composite material lens cone; s2, performing finish machining on the mounting interface surface of the composite lens cone; s3, the connecting stand columns on the lower surface of the metal patch are inserted into the mounting holes; s4, locking the connecting stand column by adopting a locking nut, and fastening the metal patch on the mounting interface surface; the method comprises the following steps: S1, mounting a metal patch on the upper surface of the composite lens barrel, S5, carrying out finish machining on the upper surface provided with the metal patch, S6, further machining the upper surface of the metal patch by adopting a manual scraping mode, and S7, connecting the composite lens barrel and an optical instrument through matching of a screw and a threaded blind hole reserved in the metal patch. According to the invention, the mounting interface surface provided with the metal patch is processed and ground, so that the mounting precision of the composite lens cone and the optical instrument is improved, and the mounting precision requirement of the related interface of the high-precision satellite optical machine is met.

The invention discloses automobile radiator water chamber injection molding equipment, and relates to the technical field of injection molding equipment, the automobile radiator water chamber injection molding equipment comprises a rack, an injection mold and a pouring mechanism, the injection mold comprises a fixed mold and an air cylinder, a guide column is fixedly mounted on the side of the outer side of the fixed mold, and a movable mold is fixedly mounted at the output end of the air cylinder; the movable mold and the guide column are slidably installed through a sliding sleeve, a sprue bush is fixedly installed on the side, away from the movable mold, of the fixed mold, a self-locking assembly is installed between the top of the fixed mold and the top of the movable mold, the pouring mechanism comprises a right-angle guide rail and a pouring main machine, and the bottom of the pouring main machine and the output end of a hydraulic cylinder are fixedly installed; a feeding bin is installed in the middle of the top of the pouring main machine, an injection molding barrel is fixedly installed on the side, close to the sprue bush, of the pouring main machine, and a heat utilization assembly is installed on the outer circle face of the injection molding barrel. According to the injection molding equipment for the water chamber of the automobile radiator, the anti-loosening effect is achieved, the influence of external force and vibration is reduced, mold opening and closing are convenient, and injection molding is safe and reliable.

The utility model discloses an anti-bending stainless steel bar which is characterized in that a reinforcing rib is arranged in the center of a bar body, the bar body is made of stainless steel, the reinforcing rib is made of carbon fiber composite materials, a composite layer is arranged on the outer surface of the bar body, a frosted layer is arranged on the outer surface of the composite layer, and the bar body is made of stainless steel. A plurality of first connecting grooves are formed in the surface of the frosted layer, the first connecting grooves are rectangular, anti-bending rings are slidably connected to the interiors of the first connecting grooves, first connecting assemblies are slidably connected to the interiors of the first connecting grooves, and second connecting assemblies are arranged on the opposite faces of the first connecting assemblies; and due to the design of the connecting assemblies and the reinforcing ribs, the borne force can be distributed more uniformly, so that local stress concentration is reduced, the bending strength is improved, deformation caused by external force in the using process is reduced, abrasion and corrosion of the material surface can be prevented, and the service life is prolonged.

This invention discloses a noise reduction and stabilization construction device and its construction method for civil engineering road construction. The invention relates to the field of road construction technology and includes a soundproof enclosure. The left side of the outer wall of the soundproof enclosure has an insertion interface, and the right side of the soundproof enclosure is fixedly connected to an insertion plate. The outer wall shape of the insertion plate is consistent with the inner wall shape of the insertion interface, and the positions of the insertion interface and the insertion plate on the soundproof enclosure are correspondingly arranged. Sealing plates are provided on both the left and right sides of the soundproof enclosure. The outer wall of the sealing plate contacts the outer wall of the soundproof enclosure. A bolt connecting plate is fixedly connected to the upper side of the sealing plate, and one side of the bolt connecting plate extends to the upper side of the soundproof enclosure. The outer wall of the bolt connecting plate is fixedly connected to the outer wall of the soundproof enclosure by bolts. This invention can reduce the vibration of the ground caused by the impact of construction machinery by using a water-filled bag that adheres to the ground, thereby reducing the noise source. It has the characteristics of strong practicality and is beneficial for reducing road construction noise.

The utility model belongs to the technical field of cooling fans, and particularly relates to a low-noise low-vibration automobile cooling fan. The wire harness fixing device comprises a mounting plate, clamping blocks are fixedly connected to the two sides of the mounting plate, supporting legs are fixedly connected to the positions, located on the outer wall of the mounting plate, below the clamping blocks, a plurality of wire harness holes are evenly formed in the mounting plate, and protective covers are movably connected into the wire harness holes through pin shafts. A fan mounting groove is formed in the center of the mounting plate, a mounting frame is fixedly connected to the inner wall of the fan mounting groove, and a motor is fixedly mounted on the mounting frame. The central position of the cooling fan is stably connected to the motor in a triangular installation mode, so that the installation stability of the cooling fan can be guaranteed, meanwhile, the outer rings are fixedly connected to the outer walls of the fan blades, the outer rings are connected to the inner walls of the fan installation grooves in an attached mode, and therefore the cooling effect is improved. And the working stability of the cooling fan is further reduced, and noise is reduced.

The present application relates to the vibration damping technology of Mecanum wheel, in particular to a Mecanum wheel vibration influence eliminating device, which comprises a cage and a difference compensation mechanism, the difference compensation mechanism has a wave contact surface; the lower part of a longitudinal moving mechanism contacts the wave contact surface; the lower end of the longitudinal moving mechanism reciprocates longitudinally under the control of a driving mechanism and the movement of the wave contact surface; when the longitudinal moving mechanism contacts the highest point of the convex surface, the wheel shaft of the Mecanum wheel is at the lowest point; when the longitudinal moving mechanism contacts the lowest point of the concave surface, the wheel shaft of the Mecanum wheel is at the highest point; and the longitudinal displacement difference of the longitudinal moving mechanism is equal to the longitudinal displacement difference of the wheel shaft. In the present application, the difference compensation mechanism moves with the Mecanum wheel at the same frequency, and for the longitudinal moving mechanism, it always keeps the opposite equal-distance movement with the wheel shaft, that is, the distance between the longitudinal moving mechanism and the ground is constant, thereby solving the problem of the vibration influence of the Mecanum wheel on the stability of the equipment.

The invention belongs to the technical field of two-axis rotary tables, and discloses a protection device for two-axis rotary table equipment in a deep space environment, which comprises a two-axis rotary table supporting base, and further comprises a driving motor arranged in the middle of the top end of an inner cavity of the two-axis rotary table supporting base; through the cooperation of the structures such as the front and rear buffer assemblies, the two side buffer assemblies and the balance auxiliary buffer assembly, when an object collides with the front and rear buffer assemblies and the shell on the outer sides of the two side buffer assemblies in the deep space environment, the buffer assemblies are arranged; at the moment, when the front and rear buffer assemblies and the buffer parts on the inner sides of the shells of the buffer assemblies on the two sides buffer impact force, the vibration effect can be reduced, meanwhile, due to the design of the balance auxiliary buffer assembly, the two sides can be synchronously buffered when one side of the front and rear buffer assemblies is subjected to the impact force, and the buffer damping effect is greatly improved; and finally, the vibration effect can be reduced, and the overall service life of the first rotary table frame, the power motor and the second rotary table frame is greatly prolonged.

The utility model relates to the technical field of floor slab construction, and discloses a supporting device which is suitable for being arranged between a lower floor slab and an upper floor slab formwork and comprises a first supporting piece arranged above the upper floor slab formwork, a second supporting piece arranged above the upper floor slab formwork, a first installation hole formed in the first supporting piece and suitable for supporting concrete pouring equipment, and a second installation hole formed in the second supporting piece, the second supporting piece is arranged below the upper-layer floor slab formwork and fixed to the lower-layer floor slab, a second mounting hole is formed in the second supporting piece, and the second mounting hole and the first mounting hole are oppositely formed; the first fastening piece is arranged in the first mounting hole and the second mounting hole in a penetrating mode and suitable for being fixedly connected with the first supporting piece and the second supporting piece. The concrete pouring equipment is supported on the supporting device and does not act on the upper-layer floor slab formwork, the situation that the upper-layer floor slab formwork is driven to vibrate after the concrete pouring equipment generates large-degree vibration in the pouring process can be avoided, and construction safety and construction quality can be improved.

The utility model discloses a purification air conditioning unit noise reduction device which comprises a base, a hollow buffer plate and a noise reduction box, the hollow buffer plate is arranged at the top of the base, the noise reduction box is arranged at the top of the hollow buffer plate, and supporting rods distributed at equal intervals are fixedly arranged on the inner wall of the bottom of the base. The outer wall of the supporting rod is sleeved with a spring and a damper, the damper is located at the top of the spring, and sliding holes distributed at equal intervals are formed in the outer wall of the bottom of the hollow buffering plate. According to the air conditioner compressor, the springs and the dampers are connected to the outer walls of the supporting rods in a sleeving mode, the springs and the dampers support the hollow buffer plate and the noise reduction box, the vibration effect in the operation process of the air conditioner compressor can be effectively reduced, the good noise reduction effect is achieved, and the noise reduction effect is good through the silencing plates fixedly arranged on the inner walls of the two sides of the noise reduction box. Noise generated by airflow can be effectively reduced through the silencing holes formed in the outer wall of the silencing plate, and the noise reduction effect of the silencer is further improved.

The invention discloses a wind vibration resistant and fatigue resistant overhead insulated conductor, and relates to the technical field of insulated conductors, a plurality of anti-puncture metal sheets are laid on the inner side of an outer circle setting insulating sleeve at equal intervals, semicircular pressing belts are bonded to the inner sides of the anti-puncture metal sheets, and a plurality of weight reduction fixed supporting cavities are formed in the inner sides of the semicircular pressing belts at equal intervals; a plurality of biconvex elastic pieces are installed on the inner side of the weight reduction fixed supporting cavity at equal intervals, an external fixed internal resistance cooling fin is bonded to one end of the inner side of the semicircular press-fit belt, a plug-in card embedding groove is formed in one end of the external fixed internal resistance cooling fin, and a plug-in card embedding strip is installed at one end of the external fixed internal resistance cooling fin. According to the invention, through internal multi-position and all-directional energy absorption and buffering, the swing amplitude of the overhead insulated wire is slowed down, and the situation that a fixed joint of the overhead insulated wire is greatly damaged by friction due to large-amplitude swing and traction is avoided, so that the service life of the overhead insulated wire is prolonged, and the service life of the overhead insulated wire is prolonged. And the stability of overhead insulated wire installation and overhead support is ensured.

The utility model discloses a pipe positioning and machining device for a milling machine, and relates to the technical field of positioning and machining devices. Comprising a bottom plate, a height adjusting structure and a positioning structure, the height adjusting structure is arranged on the upper surface of the bottom plate, the positioning structure is arranged at the upper end of the height adjusting structure, and a two-way threaded rod rotates so that a first sliding block and a second sliding block on the surface of the two-way threaded rod can get close to each other or get away from each other; accordingly, the relative distance between the two sets of square frames is adjusted, a pipe workpiece is placed between an upper annular positioning piece and a lower annular positioning piece in the two sets of square frames, and the upper annular positioning piece and the lower annular positioning piece can move up and down on the surfaces of a first threaded rod and a second threaded rod. The upper annular positioning piece and the lower annular positioning piece are moved to clamp and fix the pipe workpiece between the upper annular positioning piece and the lower annular positioning piece, and then the upper annular positioning piece and the lower annular positioning piece are fixed to the surface of the first threaded rod and the surface of the second threaded rod through limiting threaded sleeves.

The invention discloses a vibration exciter base structure for a large science device, and belongs to the technical field of micro-vibration control, the vibration exciter base structure comprises a concrete bottom plate, an adjusting support and a plurality of timber piles, the top surface of the concrete bottom plate is provided with a plurality of pile repairing holes, the timber piles can be inserted into the pile repairing holes, the adjusting support comprises a mounting frame, and the mounting frame is provided with a plurality of through holes. Four formworks used for abutting against the side faces of the concrete bottom plate are installed on the installation frame, the four formworks are two first plates parallel to each other and two second plates parallel to each other, the first plates and the second plates are perpendicular to each other, the width of the first plates is the same as that of the concrete bottom plate, and the width of the second plates is the same as that of the concrete bottom plate. The width of the second plate is larger than that of the concrete bottom plate. The vibration source can be accurately controlled through testing, the vibration influence on the surrounding environment can be reduced, and interference on other buildings and facilities is reduced.