455 results about "Viscous damper" patented technology

The utility model relates to a high-performance sealed viscous damping wall, and belongs to the technical field of civil engineering structures. Comprising steel frames, gapless spherical hinges, bushings, piston rods, pistons, oil cylinders, extension pipes, experiment connecting holes, shells, lug plates and embedded parts, the steel frames are arranged on the left side and the right side of the high-performance sealed viscous damping wall, the inner sides of the steel frames are symmetrically and fixedly connected with two or more sets of gapless spherical hinges, and viscous dampers are arranged between every two sets of gapless spherical hinges. The viscous damping wall has the beneficial effects and advantages that the viscous damping wall adopts a completely sealed structure, so that the pollution of silicone oil is avoided, and the durability of a product is ensured; the damping wall is easy to install on site, and the damping wall can be rotationally and obliquely installed according to the actual situation on site; an experiment table connecting hole is formed in the steel frame side plate, so that the non-destructive experiment of the viscous damping wall is realized; and the multiple groups of viscous dampers are connected with the steel frame through the gapless spherical hinges, so that the good cooperative work performance is achieved.

The invention relates to an anti-seismic structure of a building, and particularly discloses an anti-seismic masonry filler wall, a construction method thereof and a buckling restrained brace structure. The anti-seismic masonry filling wall comprises a masonry filling frame jointly defined by a left column body, a right column body, an upper-layer beam body and a lower-layer beam body, and two sets of viscous dampers arranged in the masonry filling frame in a splayed mode. A lower wall body is built in the inner side frame space of the two groups of viscous dampers through bricks; concrete slab strips and upper wall bodies built on the corresponding concrete slab strips through bricks are arranged in outer frame spaces of the two groups of viscous dampers respectively; the middle of each concrete slab strip is connected with the upper-layer beam body through a second concrete constructional column, and the two ends of each concrete slab strip are fixed to the beam side gusset plate assembly and the corresponding column side gusset plate assembly through internally-arranged main reinforcements. The technical difficulty of integral connection of the viscous damper between the beam side gusset plate assembly and the corresponding column side gusset plate assembly is effectively reduced, and the operation efficiency and the anti-seismic quality are improved.

The invention discloses a prestress-free multistage stress self-resetting rotary viscous damper in the field of energy dissipation and shock absorption, which comprises an outer sleeve internally provided with a cavity, a guide rod capable of linearly moving along the axis direction of the outer sleeve, and a primary spring sleeved outside the guide rod, a first partition plate and a second partition plate are arranged in the outer sleeve to divide the cavity into a first cavity, a second cavity and a third cavity, a second-stage stress mechanism is arranged in the first cavity corresponding to the guide rod, a rotary conversion mechanism is arranged in the second cavity, and a rotary viscous energy dissipation mechanism is arranged in the third cavity. The guide rod penetrates through the outer sleeve and the first partition plate and is fixedly connected with the rotation switching mechanism, one end of the first-level spring is connected with the first partition plate, and the other end of the first-level spring is connected with the rotation switching mechanism which is used for converting linear motion of the guide rod into rotation motion to be output. The rotary viscous energy dissipation mechanism is used for dissipating energy generated by the input end of the rotary viscous energy dissipation mechanism due to rotary motion. The anti-seismic self-resetting device has symmetrical tensile and compressive properties, and can realize self-resetting after an earthquake.

The novel viscous damper with the early warning function comprises a first connecting assembly, a piston assembly, an early warning device and a second connecting assembly, the piston assembly comprises a first piston rod, a second piston rod, a sealing piece, silicone oil, a piston and an oil cylinder, and the first piston rod is fixedly connected with the first connecting assembly; sealing pieces used for sealing the first piston rod, the second piston rod and the silicone oil are fixed to the two ends of the oil cylinder, the two sealing pieces are in sliding connection with the first piston rod and the second piston rod respectively, and a piston is in clearance fit with the inner wall of the oil cylinder; the early warning assembly comprises a permanent magnet, an RGB three-color lamp, a copper wire and a rear connecting pipe, the copper wire is wound around the other end of the first piston rod, and the copper wire is electrically connected with the RGB three-color lamp. The second connecting assembly is arranged, the mounting angle and position can be changed, mounting can be achieved more conveniently, vibration energy can be converted into current, and an RGB three-color lamp is used for alarming and prompting.

The invention discloses a power transmission line anti-galloping phase-to-phase spacing device, which belongs to the technical field of power transmission lines, and is characterized in that two connecting plates, two connectors, two cross universal joints and two rod type composite insulators are arranged between two adjacent six-split damping spacers; each connecting plate is connected with a cross universal joint through a connector, and the cross universal joints are further connected with the ends of the rod type composite insulators. A hydraulic shock absorber is arranged in the middle of the two rod type composite insulators; a damping ball is arranged in the center of a triangle formed by the rod type composite insulators; an outer viscous damper, a first connecting rod and a second connecting rod are arranged between the hydraulic shock absorber and the damping ball; the first connecting rod and the second connecting rod are connected to the two sides of the outer viscous damper respectively, the damping ball is connected with the first connecting rod, and the hydraulic shock absorber is connected with the second connecting rod through the connecting ferrule. The problems that in the prior art, under the long-time line use condition, wires are damaged, the safety of a power transmission line is affected, and cost is high are solved.

The present invention proposes a test and detection method for an overload protection type viscous damper, the method comprising the following steps: adopting a static loading test, controlling the loading unit of the test machine to make the overload protection type viscous damper to be tested move at a uniform speed, and recording the limit displacement value of the reciprocating motion of the damper; setting a total of four independent tests, respectively testing at three speed gears and corresponding test displacements, the test speed and test displacement in the first test are consistent with the parameter settings in the last test. By adopting a static loading test and uniform motion control, the actual working state of the damper can be accurately simulated, the accuracy and representativeness of the test results can be improved, and by comparing the maximum output deviations of the first and fourth tests, the durability and consistency of the damper can be effectively evaluated to ensure its reliability in long-term use.

The invention discloses a high-performance sealed viscous damping wall. The high-performance sealed viscous damping wall comprises a viscous damper, the steel frames are symmetrically arranged at the two ends of the viscous damper, and the outer side of each steel frame is fixedly connected with a lug plate; the embedded part is arranged on the wall body, a setting hole is formed in the lug plate, and the inner wall of the top hole is connected with the outer wall of the embedded part in a sliding mode and is fixed to the embedded part through a fixing cap in a threaded mode; the gapless spherical hinges are arranged at the joints of the two ends of the viscous damper and the steel frame, and hinge joint of the viscous damper and the steel frame is achieved; the invention belongs to the technical field of civil engineering structure damping walls, and achieves the technical effects that vibration mechanical energy is efficiently converted into heat energy to be dissipated through nonlinear damping force generated when damping liquid in the viscous damper flows through a piston throttling hole, the acceleration and displacement response of the structure are greatly reduced, and the damping effect is good. And the hot zinc spraying and paint anti-corrosion layer ensures long-acting service in a severe environment.

The utility model belongs to the technical field of bridge construction engineering application, and particularly discloses a bridge viscous damping shock absorption structure which is composed of a viscous damping structure set and a seat body, the viscous damping structure set comprises an end plate and at least one viscous damper connected to the end plate, the seat body is used for being installed on a beam plate of a bridge, and the viscous damper is connected to the end plate. The end plate is used for being installed on the side face of the pier, and the end, away from the end plate, of the viscous damper is installed on the seat body. The bridge damping device has the advantages that when external force borne by a bridge is within the design range, the piston is mainly located in the middle section of the damping shaft when moving in the piston cavity; when the external force borne by the bridge exceeds the design range, the piston can deviate from the middle section of the damping shaft and reach the two ends of the damping shaft when moving, at the moment, due to the fact that the gap between the damping shaft and the damping through hole becomes small, damping force exceeding the design specification can be provided, and the viscous damper can still play a role to continue to protect the bridge.

The present invention relates to the technical field of construction engineering, and specifically to configurations and close-fitting joints for a second-order scissor damper and an assembly method for the same. There six parts in total, including first hinge joints, a first-order shuttle-shaped linkage mechanical component, second hinge joints, a second-order shuttle-shaped linkage mechanical component, third hinge joints, and a viscous damper; the second-order shuttle-shaped linkage mechanical component includes four small connecting rods of equal length and it is formed by hinging them together. The device of the present invention can constrain the joints, release the bending constraints on the ends of the rods, and enable a significant increase in the stroke amplification of the conventional scissor damper.

The utility model belongs to the technical field of damping vibration attenuation, and particularly relates to a viscous damper structure which comprises a damping cylinder body, a viscoelastic damping body is arranged at the top of the damping cylinder body in a sealing mode, a viscous damping body is filled in the damping cylinder body, and a movable shaft body penetrates through the middle of the viscoelastic damping body. One end of the movable shaft body extends into the viscous damping body and is provided with a movable terminal; the movable shaft body is of a hollow structure and is internally provided with an adjusting shaft, one end of the adjusting shaft is provided with an adjusting disc abutting against the movable terminal, and the movable terminal and the adjusting disc are provided with damping adjusting holes which are aligned in a one-to-one mode. The viscoelastic damping body is made of a pouring type high-damping material, has excellent vibration reduction characteristic, waterproof performance and sealing characteristic and basically has no additional rigidity, and the viscous damping body is made of a liquid type high-damping material, and is excellent in damping function and simple in structure; and meanwhile, the size of the damping adjusting hole in the movable terminal can be adjusted by rotating the adjusting disc, so that the purpose of adjusting the damping is achieved.

The invention provides a shock insulation tensile device working in the whole process of an earthquake, and relates to the technical field of building earthquake resistance. The vibration isolation device comprises a vibration isolation support fixedly installed between an upper buttress and a lower buttress and further comprises a plurality of tensile viscous dampers, the two ends of each tensile viscous damper are connected with the upper buttress and the lower buttress through universal hinges correspondingly, a C-shaped plate is arranged on one side of each tensile viscous damper, four fixing arms are fixedly installed on each C-shaped plate, and each C-shaped plate is connected with the corresponding fixing arm. The ends, away from the C-shaped plate, of the four fixing arms are connected with a cylinder body of the tensile viscous damper, and two scale plates are installed in the C-shaped plate in a sliding mode. The shock insulation tensile device working in the whole process of the earthquake has the advantages that the shock insulation support can be effectively prevented from being damaged due to the fact that the shock insulation support bears too large tensile force, related personnel can conveniently measure the maximum extension and retraction amplitude of the piston rod of the tensile viscous damper in the earthquake after the earthquake, detection components are flexible to install, and data recording reliability is high.

The utility model discloses a viscous damper, belongs to the technical field of dampers, and particularly relates to a variable index protection damper which comprises an outer cylinder, an overflow valve assembly, a piston, a connecting lug seat and a damping medium. The overflow valve assembly is installed in the piston, the piston is installed in the outer cylinder, the number of the connecting lugs is two, the connecting lugs are fixedly connected with the two ends of the outer cylinder respectively, and the damping medium is filled in the outer cylinder; the overflow valve assembly is composed of a sealing gasket, a pressing spring, a locking nut and a pressing steel ball. The overflow valve assembly starts to take effect at a specific speed through a specific spring structure, compared with a previous structure, the production cost and the construction cost are greatly reduced, a so-called protection type damper cannot be effectively protected on site, meanwhile, the index of the damper is a value before the valve is opened, and the safety of the valve is improved. When the set speed is reached, the index of the damper begins to change, and the variable index is achieved.

The invention provides a performance failure experiment device for a gapless viscous damper, and relates to the technical field of viscous damper performance failure experiments. A control panel is mounted on the front side of the top of the damper positioning part; a damper supporting part is mounted in the center of the top of the damper positioning part; the right side of the damper positioning part is provided with the performance experiment part. A liquid leakage detection part is mounted on the damper positioning part; an extrusion moving part is mounted on the damper positioning part; two groups of movable limiting parts are mounted at the top of the liquid leakage detection part; the viscous damper is supported, and continuous friction between the outer wall of the viscous damper and the experimental device is avoided; the problems that the service life of the experimental device is affected and the outer wall of the viscous damper is abraded due to continuous friction between the outer wall of the viscous damper and the experimental device when a performance failure experiment is carried out due to lack of a supporting structure generally are solved.

The double-step high-performance sealed viscous damping wall comprises a viscous damper and steel frames installed at the two ends of the viscous damper, the outer sides of the steel frames are fixedly connected with lug plates, embedded parts are arranged on the side walls of the lug plates, and the two ends of the viscous damper are hinged to the steel frames through gapless spherical hinges; the viscous damper comprises an oil cylinder, a piston and a piston rod, and the oil cylinder is filled with damping liquid; a variable cross-section structure is arranged on the inner wall of the oil cylinder, so that the middle circulation cross section is larger than the cross sections at two ends, and intelligent grading regulation of damping force along with piston displacement is realized; the invention belongs to the technical field of civil engineering damping walls, and achieves the technical effects that the groove is machined in the middle of the oil cylinder, a double-step energy dissipation mechanism is constructed, when a piston moves in the range of the groove, silicone oil can flow through double channels of the enlarged radial gap and the communicating hole, the piston moves to break through the boundary of the groove due to an earthquake, and the damping effect is achieved. And the gap between the piston and the oil cylinder is compressed instantly, so that the comfort under small earthquakes is guaranteed, and high-efficiency dissipation of pulse energy during large earthquakes is ensured.

The utility model relates to a liquid cooling temperature control gapless viscous damper, and belongs to the technical field of civil engineering. Comprising a pin head, a piston rod, an inner barrel, an oil cylinder, a lining, damping liquid, a piston, an electric temperature control system, a water cooling system, a solar photovoltaic system, a mounting plate, a hollow pin shaft and an electric auxiliary heating system. A partition plate and an inner barrel fixing plate in the oil cylinder divide the oil cylinder into three areas, namely an energy consumption area, a limiting area and a pipeline maintenance area from left to right in sequence, and a piston rod penetrates through the energy consumption area. The beneficial effects and advantages of the utility model are that through feedback signals of the electric temperature control system, the solar photovoltaic system drives the water cooling system to control the temperature of the damper, the stable working performance of the damper is maintained, the pipeline overhaul area is simple and convenient to disassemble, the maintenance and overhaul of the water cooling pipeline in the inner cylinder are facilitated, and the service life of the damper is prolonged. The hole channels with the continuously-changing hole diameters enable damping liquid to generate vortexes in the hole channels, the damping effect is greatly improved, and the gap between the pin shaft and the mounting plate can be eliminated by controlling the temperature of the pin shaft.

The present invention provides a viscous damping device based on displacement amplification. It belongs to the technical field of building seismic equipment, and includes: a lower mounting plate, an upper mounting plate and a viscous damper. The viscous damper is installed between the lower mounting plate and the upper mounting plate. Two lower node plates are fixedly installed on the top of the lower mounting plate, and two upper node plates are fixedly installed on the bottom of the upper mounting plate. A first fixed plate is rotatably installed between the two lower node plates. The viscous damper is rotatably installed on the first fixed plate, and a connecting arm located above the viscous damper is fixedly installed on the first fixed plate. The viscous damping device based on displacement amplification provided by the present invention has the advantages that the viscous damper can obtain an enhanced energy dissipation effect even under a relatively small displacement condition, improves the shock absorption performance of the building under the action of an earthquake, facilitates relevant personnel to obtain the operating conditions of the viscous damper at the epicenter, and is reliable to use.

The invention discloses a damper anti-seismic system and method based on torsional energy dissipation of hollow round pipes. The damper anti-seismic system comprises a frame beam, a frame column, a cantilever wall and a torsional energy dissipation damper. The frame beams and the frame columns are connected with a building, the cantilever walls are connected with the frame beams, and the torsional energy dissipation dampers are arranged between the paired cantilever walls and connected with the cantilever walls to dissipate energy transmitted by the cantilever walls. According to the damper anti-seismic system, the torsional energy dissipation damper is arranged, a metal structure system is adopted, the liquid leakage risk of a traditional viscous damper is avoided, building vibration energy is evenly consumed through ingenious cooperation of a metal structure, and the anti-seismic performance of a building structure is improved. Due to the arrangement of the multi-section type hollow energy dissipation pipe fittings and the paired energy dissipation pipe fittings, the energy dissipation effect of the torsional energy dissipation damper is improved, the stability of the torsional energy dissipation damper is improved, fatigue fracture at the connecting position is avoided, and the service life of the torsional energy dissipation damper is prolonged.

The utility model provides a variable damping force viscous damper which comprises a cylinder barrel, bushings connected to the two ends of the cylinder barrel, a piston movably arranged in the cylinder barrel, a piston rod penetrating through the center of the piston, with the two ends penetrating through center holes of the bushings and extending outwards, and damping fluid filled in a closed cavity defined by the cylinder barrel, the bushings, the piston and the piston rod. An annular outer gap is formed between the outer wall of the piston and the inner wall of the cylinder barrel, the variable-diameter guide rod is arranged in an open hole of the piston in a penetrating mode, and the two ends of the variable-diameter guide rod are fixedly arranged on the lining in an inserted mode. The inner diameter of the open hole is larger than the outer diameter of the first rod body and the outer diameter of the second rod body, and when the piston moves to the first rod body and the second rod body, a first annular inner gap and a second annular inner gap which are different in width can be formed between the inner wall of the open hole and the outer wall of the variable-diameter guide rod, so that the overflowing area of a damping liquid flowing channel is changed, and the variable damping force effect is achieved.

To provide a method and system for predicting the damping force of a two-stage viscous damper. [Solution] This prediction method includes the steps of calculating only the pressure difference across the two ends of the primary piston in the first stage, calculating the pore damping force of the primary piston as the damping force of the viscous damper in the first stage based on the pressure difference across the two ends of the primary piston in the first stage, calculating the pressure differences across the two ends of the primary piston and the secondary piston in the transition stage and the second stage, respectively, calculating the damping force of the primary piston based on the pressure difference across the two ends of the primary piston, calculating the damping force of the secondary piston based on the pressure difference across the two ends of the secondary piston, and determining the sum of the pore damping force of the primary piston and the damping force of the secondary piston as the damping force of the viscous damper in the transition stage or the second stage.

The invention discloses a wall type Z-shaped metal torsion tube damper anti-seismic system and method. The wall type Z-shaped metal torsion tube damper anti-seismic system comprises a frame beam, a frame column, a cantilever wall and a Z-shaped metal torsion tube damper. The frame beams and the frame columns are connected with a building, the cantilever walls are connected with the frame beams, and the Z-shaped metal torsion tube dampers are arranged between the paired cantilever walls and connected with the cantilever walls so as to dissipate energy transmitted by the cantilever walls. According to the damper anti-seismic system, the Z-shaped metal torsion tube damper is arranged to replace a traditional mild steel metal damper and a viscous damper to conduct damping design of a building structure, the problem that the low-cycle fatigue performance of the traditional metal damper is poor is solved, the oil leakage risk of the viscous damper is avoided, and the anti-seismic performance of the building structure is improved. Moreover, due to the structural design in the damper, the influence of the bending and shearing effect on the deformation of the torsion tube under the action of an axial load is eliminated, so that the section of the torsion tube is always kept a stable circular section in the hysteresis energy consumption period of the torsion tube, and the energy consumption efficiency is ensured.

The utility model relates to the technical field of power transmission lines of a power grid, and provides a vibration attenuation suppression device for connecting a power transmission tower and an insulator, which comprises a friction damping box, a friction damping fin, a connecting hook, a first mounting hook, a second mounting hook, a plurality of springs, a viscous damper, a universal support, a hook support and a mounting support, the friction damping box is provided with a mounting cavity and a receding opening. The friction damping fin is mounted in the mounting cavity; the hook supports and the friction damping fins are arranged at intervals; a connecting hook is arranged on the hook support; a plurality of universal supports are mounted on the hook support; a plurality of mounting supports are mounted on the friction damping fin; a plurality of viscous dampers are connected in parallel between the universal support and the mounting support; the plurality of first mounting hooks are arranged on the friction damping fin; a plurality of second mounting hooks are arranged on the friction damping box; and a spring is hung between the first mounting hook and the second mounting hook. According to the utility model, the structure of the vibration reduction suppression device is optimally designed, so that the vibration reduction effect is better.

The invention provides a viscous damping device based on displacement amplification. Belongs to the technical field of building anti-seismic equipment and comprises a lower mounting plate, an upper mounting plate and a viscous damper, the viscous damper is mounted between the lower mounting plate and the upper mounting plate, two lower gusset plates are fixedly mounted at the top of the lower mounting plate, two upper gusset plates are fixedly mounted at the bottom of the upper mounting plate, and the upper gusset plates are fixedly mounted at the bottom of the upper mounting plate. A first fixing plate is rotationally installed between the two lower gusset plates, the viscous damper is rotationally installed on the first fixing plate, and a connecting arm located above the viscous damper is fixedly installed on the first fixing plate. The viscous damping device based on displacement amplification has the advantages that the viscous damper can obtain the enhanced energy consumption effect under the condition of small displacement, the damping performance of a building under the earthquake action is improved, related personnel can conveniently obtain the operation condition of the viscous damper in the earthquake, and use is reliable.

The utility model provides a viscous damper. The viscous damper comprises a cylinder body, a piston rod and a first reset part, wherein the first reset part is connected with the piston rod; the fixed part and the piston rod are arranged at intervals; the reset assembly comprises a connecting part, a second reset part and a force application part, the connecting part is connected with the cylinder body and the fixing part, the second reset part is movably matched with the first reset part, and the force application part applies pressure to the first reset part and the second reset part in the direction perpendicular to the piston rod; the first reset part is arranged at the position of the piston rod and is assembled between the cylinder body and the fixing part through the reset assembly, so that the second reset part is movably matched with the first reset part, and pressure is applied to the first reset part and the second reset part through the combined action of the force application part; the first reset part and the second reset part return to the initial position, directional guide reset is achieved through the force application part, then the piston rod is fully reset, and the viscous damper eliminates residual deformation after vibration (vibration) of a vibration reduction (vibration) object.

The invention provides a design method of a building viscous damper device, and belongs to the technical field of building earthquake resistance, and the method comprises the following steps: obtaining building drawing data, constructing a building three-dimensional model and installing a sensor, simulating seismic waves to carry out impact vibration on the three-dimensional building model, detecting stress data, and designing a corresponding viscous damper device of a building. A mechanical model of the viscous damper device is established to obtain an improved viscous damper device, the improved viscous damper device is installed on the building three-dimensional model, then secondary vibration is conducted, the damping effect is detected, the viscous damper device is corrected according to the detected effect, and the final viscous damper device is obtained. According to the characteristics of each building, a viscous damper device is simulated and arranged, then vibration stress tests in different directions are carried out, then stress test data of the viscous damper device are detected, the corresponding viscous damper device is arranged according to the characteristics of the building, and the anti-seismic effect of the viscous damper device is the best.

The utility model relates to the technical field of anti-seismic dampers, and particularly discloses a stable high-fatigue type viscous damper which comprises a movable end and a fixed end, and the movable end and the fixed end are respectively connected with an embedded part. A shell is arranged between the movable end and the fixed end, an inner cavity is formed in the inner side of the shell, a containing cavity is formed in the inner side of the end, close to the fixed end, of the inner side of the inner cavity, and an elastic piece is installed at the containing cavity. A piston rod is arranged at one end of the movable end, one end of the piston rod extends to the inner side of the inner cavity, a push rod is arranged in the middle of the piston rod in the inner cavity, and one or more buffer cylinders are symmetrically arranged relative to the push rod. According to the viscous damper, a good damping effect can be achieved through the telescopic part arranged in the viscous damper and the filled damping medium such as hydraulic oil, and in the later-stage retraction process, the damping enhancing effect can be achieved through combination of liquid and the telescopic part, and the anti-seismic effect is improved.

The invention discloses a replaceable energy dissipation type prestress assembly type beam-column joint and a construction method thereof. The replaceable energy dissipation type prestress assembly type beam-column joint comprises a prefabricated column, a prefabricated beam, an angle steel connecting piece, a viscous damper, FRP cloth and a prestress tensioning piece. The FRP cloth is pasted to the joint of the prefabricated beam and the prefabricated column, angle steel connecting pieces fixed to the prefabricated beam and the prefabricated column are arranged on the outer side of the FRP cloth, and the two angle steel connecting pieces on the upper side are provided with viscous dampers arranged in the inclined direction. The prestressed tensioning part is of a downwards-protruding arc-shaped structure, a first hole channel and a second hole channel which are matched with the prestressed tensioning part are formed in the prefabricated beam and the prefabricated column respectively, anchoring blocks are arranged at the positions, corresponding to the first hole channel, of the upper end face of the prefabricated beam, the prestressed tensioning part is arranged in the hole channels in a penetrating mode, and the two ends of the prestressed tensioning part are anchored to the corresponding anchoring blocks respectively. The FRP cloth is adopted to enhance the integrity and durability of the joint, the downwards-protruding prestress tensioning piece can resist the sagging moment of the joint and cooperates with the viscous damper to efficiently dissipate energy, and rapid repairing is achieved by replacing the energy dissipation connecting piece.

The viscous damper comprises a round cylinder, the top end of the round cylinder is in threaded connection with a sealing cover, a piston block is connected into the round cylinder in a sliding mode, a movable rod is fixed to the top face of the piston block, the top end of the movable rod penetrates through the sealing cover, the movable rod is connected with the piston block in a sliding mode, and a throttling hole is formed in the top face of the piston block. An anti-loosening mechanism used for preventing the sealing cover from loosening is arranged on the circular barrel, a mounting groove is formed in the inner circumferential wall of the circular barrel, a sealing ring is fixed to the inner bottom wall of the mounting groove, and a sealing ring plate is fixed to the bottom face of the sealing cover. According to the viscous damper, the piston block is driven to move through the movable rod, throttling resistance can be generated when fluid passes through the throttling hole, then the damping and anti-seismic effects are achieved, the sealing cover is in threaded connection with the circular barrel, so that the sealing cover is convenient to disassemble and assemble, the damper is disassembled, then the fluid is replaced, and an inner cavity of the circular barrel, the piston block and the movable rod are maintained; and the damping and anti-seismic effects of the damper in subsequent use are guaranteed.

The utility model provides a kind of viscous damper mounting structure, including first mounting beam and second mounting beam, the first mounting beam is equipped with accommodating space, the inboard of accommodating space is equipped with viscous damper, the upper of second mounting beam is provided with first embedded part, the bottom of first embedded part is fixedly installed with fixed frame.The utility model is through the setting of first connecting rod, mounting sleeve, second connecting plate and connecting mechanism, when using, the cylinder barrel of viscous damper and fixed frame branch can be movably connected, the movable connection of both can also realize the movable connection of cylinder barrel of viscous damper and mounting beam, allow cylinder barrel to be multi-directional displacement with building structure in earthquake and not be restrained, while avoiding that cylinder barrel bears too large bending moment and torque, reduce the problem that cylinder barrel appears deformation or damage, to effectively guarantee the performance and durability of viscous damper.

This utility model discloses an anti-loosening fastening device for tractor units, belonging to the field of tractor unit technology. The anti-loosening fastening device includes a front connecting plate and a rear connecting plate. A movable combined arm is installed at the rear end of an adjusting frame, and a viscous damper is installed between the two movable combined arms. Hydraulic dampers are installed between the front and rear connecting plates and the adjusting frame. This utility model solves the problem that existing tractor unit fastening devices become loose due to vehicle vibrations, failing to maintain a stable working state. By connecting the hydraulic damper and the viscous damper, this utility model achieves a good connection between the front and rear connecting plates. During tractor turning, the front and rear connecting plates are subjected to tension and traction forces, causing movement. During this movement, the hydraulic damper and the viscous damper limit movement and reduce vibration, effectively achieving an anti-loosening effect.

The utility model relates to the technical field of dampers, and discloses a viscous damper which comprises bases, the tops of the two bases are fixedly connected with a supporting plate, a limiting mechanism is arranged in the supporting plate, the adjacent side of the outer portion of the limiting mechanism is rotationally connected with a damping body, the tops of the bases are provided with cleaning mechanisms, and the cleaning mechanisms are arranged on the bases. And the cleaning mechanism comprises two supporting blocks, connecting blocks are fixedly connected to the exteriors of the two reset springs, sliding rings are fixedly connected to the adjacent sides of the exteriors of the two connecting blocks, and cleaning brushes are fixedly connected to the interiors of the sliding rings. When the damping body is not used, dust and impurities are prone to being accumulated on the surface of the damping body, the performance of the damper is affected, at the moment, movement of the damping body drives the sliding ring and the cleaning brush to move synchronously, the cleaning brush is tightly attached to the surface of the damping body, the cleaning efficiency is improved through the design, and the stability and reliability of the damper are enhanced; and long-term high-efficiency operation is ensured.