247results about How to "Reduce shock absorption" patented technology

A playing surface structure includes a resin impregnated textile layer (1) having a resin bonded layer of particulate rubber (7) adherent to its undersurface and overlying a fibrous random pile mat (8) incorporating a random pile layer (9) and a relatively compact, resin impregnated backing layer (10).

The invention relates to a patient ventilation or breathing device and components therefore for use in all forms of respiratory apparatus ventilation systems including invasive and non-invasive ventilation, positive airway pressure therapy, Continuous Positive Airway Pressure (CPAP), and particularly Bi-Level therapy and treatment for sleep disordered breathing (SDB) conditions such as Obstructive Sleep Apnea (OSA), and for various other respiratory disorders and diseases. The invention particularly relates to a blower, to a blade, to a gasket, to a cable, to an impeller, to a gas inlet and inlet member, to an improved air path or fluid flow path and components thereof, and / or to a modular ventilation or breathing device as referred to above and particularly incorporating one or more of the other aspects of the invention.

The invention provides a punching machine for producing bearings with a damping function, and relates to the field of machinery. The punching machine with damping function for bearing production includes a motor box, the bottom of the motor box is movably connected with a rotating shaft, and the end of the rotating shaft far away from the motor box is fixedly connected with a drill bit, and the lower surface of the motor box is A fixed plate is fixedly connected, and the end of the fixed plate away from the motor box is fixedly connected with a base. The punching machine with damping function for bearing production, through the capsule body, piston, piston rod, fixed seat, rotating shaft, runner, buffer rod, second slider, first spring, fixed rod, second spring, receiving The force plate and the horizontal plate cooperate to reduce the vibration generated when the punching machine is working, and solve the problem that the existing punching machine does not have the shock absorption function. Vibration will cause noise, which will affect the physical condition of the staff.

The invention relates to an aerogel composite board and a preparation method thereof. The composite board comprises a panel, a bottom board, and skeletons which are positioned between the panel and the bottom board and are crossed to form a plurality of cavities. The preparation method comprises the steps of coating a binding agent at one side of the bottom board so as to bind the skeletons with the bottom board; filling the cavities of the skeletons with silica aerogel; coating a binding agent at one side of the panel and binding with the skeletons filled with the silica aerogel. The aerogel composite board and the preparation method thereof have the advantage that the mechanical strengths of the panel, the bottom board and the whole composite board are improved by adopting a structure of enabling the skeletons as a center and compounding boards up and down; the coefficient of thermal conductivity of is reduced to 0.010-0.020 (W / m.k) through the aerogel evenly distributed in the cavities of the skeletons, so that the composite board is superior to various heat-insulating materials, and is next only to a vacuum insulating board; The application range of the composite board application scope is widespread, such as industry, the external walls of buildings, interior decoration, traffic transportation vehicles and ships.

The invention relates to a pipeline robot which comprises a supporting mechanism, a walking mechanism connected with the supporting mechanism, anti-collision mechanisms, an operating mechanism and anouter connecting mechanism. The supporting mechanism comprises a supporting base and a bearing vehicle body, the bearing vehicle body is of an inner hollow structure with an opening in the side face,and the supporting base is located under the bearing vehicle body. The walking mechanism is connected with the supporting base through a self-adapting mechanism. The anti-collision mechanisms are arranged on the top and the two sides of the bearing vehicle body. The operating mechanism comprises a mechanical arm with multi-degree of freedom and an end executor, the first end of the mechanical armwith the multi-degree of freedom is fixed into the bearing vehicle body, and the second end of the mechanical arm of the multi-degree of freedom is connected with the end executor. The outer connecting mechanism comprises a material cable conveying device and a control system, the material cable conveying device is arranged in the bearing vehicle body and is connected with the outer portion of a pipeline, and the control system is used for controlling all the mechanisms to operate. The pipeline robot is wide in application range and adapts to operation environments of pipelines in various shapes.

The invention discloses an electronic product placing frame with a damping effect. The electronic product placing frame comprises a fixing base, a first groove is formed in the upper surface of the fixing base, two symmetric second grooves are formed in the inner side wall of the first groove, a sliding rod is fixedly connected inside each second groove, and a sliding ring matched with the corresponding sliding rod sleeves the outer surface of each sliding rod. According to the electronic product placing frame with the damping effect, sliding grooves are formed and sliding blocks are used cooperatively so that the two ends of an elastic plate can be effectively moved, and impact force borne by the elastic plate is buffered; a third spring is arranged so that stretching of the elastic platecan be effectively limited, and then the effect of relieving the impact is achieved; the elastic plate is arranged and a first spring and a second spring are cooperatively arranged, so that the buffering force of a first fixing plate is greatly reduced, the stability of a second fixing plate is improved, and the problem that an existing electronic product placing frame is poor in damping effect is solved.

The invention discloses a movable multistage effective sewage treatment device, comprising a shell; the shell is in a rectangular shape; a damping universal wheel device is arranged at the bottom of the shell; the shell is internally and sequentially provided with an oxidation tank, a flocculating tank, a filter tank, a disinfection tank and a precipitation tank in the length direction; a waste water inlet pipe, fixedly connected with the oxidation tank, is arranged under one side of the shell; the oxidation tank is internally provided with an oxidation device; the flocculating tank is internally provided with a flocculating device; the filter tank is internally provided with a filtering device; the disinfection tank is internally provided with a disinfection device; the precipitation tankis internally provided with a precipitating device; a water outlet pipe, fixedly connected with the precipitation tank, is arranged above the right side of the shell; a controller is arranged outsidethe shell; the controller is respectively and electrically connected with the oxidation device, the flocculating device, the filtering device, the disinfection device and the precipitating device. The movable multistage effective sewage treatment device has the beneficial effects of being simple in structure and high in practicality.

The invention discloses a stretcher for spine surgery. The stretcher comprises a device main frame, wherein both sides of the device main frame are hinged with side frames by virtue of hinges; a group of limiting plates are arranged at the lower sides of the side frames; a group of mounting frames are arranged at the lower side of the device main frame; a group of rotating shafts are arranged on the mounting frames; the rotating shafts are matched with rotary square sleeves in rotary mode; the rotary square sleeves are connected to supporting legs by virtue of supporting springs; universal wheels are arranged at the lower ends of the supporting legs; an air cushion is arranged at the upper side of the device main frame; an inflator, which is matched with the air cushion, is arranged at one end of the device main body; a group of handles are arranged at each of two ends of the device main frame; and clamping block sliding buttons and pull arm sliding buttons are arranged on the handles in a sliding mode. The stretcher for the spine surgery is convenient to operate, and the stretcher, when used, can relieve burden of medical personnel, so that the medical personnel can carry a patient with lower physical power consumed; meanwhile, the patient can be protected well; and the stretcher can effectively prevent the body of the patient from getting displaced, so that the occurrence of secondary injury can be prevented.

The invention discloses a lower limb exoskeleton ankle joint device on the basis of energy optimization. The lower limb exoskeleton ankle joint device comprises a shank exoskeleton module, an ankle module and a foot sole module. The shank exoskeleton module, the ankle module and the foot sole module are sequentially connected with one another. The lower limb exoskeleton ankle joint device has theadvantages that a cushion energy storage device can be formed by a steel plate spring and a damper, ground impact energy of foot soles can be timely stored and released in walking procedures, accordingly, energy consumption can be reduced during lower limb exoskeleton ankle joint running, and cushion and damping effects can be realized; the rigidity of the steel plate spring can be adjusted, and accordingly energy can be optimized in the walking procedures; the height of the shank exoskeleton module can be adjusted by the aid of an adjusting rod, accordingly, requirements of different people can be met, and the lower limb exoskeleton ankle joint device is good in applicability; compliance control technologies on the basis of force feedback are adopted for control modes for the lower limb exoskeleton ankle joint device, accordingly, lower limb exoskeleton ankle joints can stably run, the lower limb exoskeleton ankle joint device can be effectively applied to rehabilitation training robots and has great application value, power consumption can be reduced, and the applicability can be improved.

The invention discloses a robot foot end structure and aims to solve the problem that the foot-end stress area of an existing foot-type robot is small, the robot possibly produces a slippery phenomenon and difficultly stably walks on a non-structural road surface, normal work of the robot is affected, but a large foot-type robot walks unstably due to excessive self weight, great impact is producedto the robot and the service life of the robot is affected. The robot foot end structure adopts a spring structure and mutual cooperation of parts to achieve the functions of contact area increase and buffering damping. According to the robot foot end structure, on one hand, the contact range of foot end toes is widened and a robot body is kept stable through spring compression, on the other hand, a buffering damping effect is played, and thus the service life of the robot is prolonged. The robot foot end structure is reasonable in design, ingenious in concept, simple in structure, convenientto operate, low in production and maintenance cost and easy to use, has a higher application value and has remarkable progressive significance in development of multi-legged robots.

An unmanned aerial vehicle crash protection device is provided, which comprises a fixedly mounted robot arm, an auxiliary rotating paddle wheel, a power impeller, an observation camera, a support bar,and a speed reduction cushioning protection device. One end of the fixedly mounted robot arm is provided with a power paddle wheel and is connected with each other in a rotational manner, and the other end of the fixedly mounted robot arm is connected with the outer surface of the speed reduction cushioning protection device in a bonding manner, and a power paddle wheel is arranged directly in front of the auxiliary rotary paddle wheel. When the unmanned aerial vehicle falls down because of failure, the unmanned aerial vehicle is capable of promptly and accurately ejecting a parachute bag, toincrease the air drag and slow down the falling speed of the UAV, so that the gravity inertia force and impact force of the UAV after falling on the bottom surface are greatly reduced, and then whenthe UAV contacts with the bottom surface, the bottom landing frame can further play the role of cushioning and damping, preventing the components of the UAV from loosening, so as to carry out the protection of the UAV.

The invention provides road leveling and film laying equipment. The equipment comprises a rack, a water storage tank, a water pump, a driving device, a driving roller, a film winding roller, a vibration leveling plate, a flattening roller, a film pressing roller and a watering rod, in the vertical direction, the vibration leveling plate and the rack are connected with a damping assembly; a vibration motor is arranged on the vibration leveling plate; the driving roller, the flattening roller and the film pressing roller are rotatably connected with the rack; the driving device controls the driving roller to rotate; the watering rod is communicated with the water storage tank through the water pump; the watering rod is connected with an atomizing nozzle; the film winding roller is located above the position between the flattening roller and the film pressing roller. The two ends of the film pressing roller are rotationally connected with the first ends of the two hinge pieces correspondingly. The second end of each hinge piece is hinged to the rack, an elastic piece is connected between each hinge piece and the rack, the elastic pieces force the film pressing roller to be away from the rack, and the equipment integrates the functions of road surface leveling and film laying, and is convenient to operate, high in working efficiency, long in service life and reliable in working performance.

The invention discloses a high-efficiency mixing device for food processing, which comprises a body. A feed hopper is arranged in the upside middle position of the body. The bottom end of the feed hopper is connected to a feed inlet provided in the upper side of the body by means of a vibrating screen. A food additive scattering device is arranged at the internal upper side of the body. The food additive scattering device comprises a fixed tube, an elastic tube, a nozzle, an elastomer, and a swinging mechanism. One end of the fixed tube is connected to the elastic tube, and the other end of the elastic tube is connected to the nozzle. The high-efficiency mixing device for food processing in the invention is capable of screening a feed such that feed additives can be mixed with the feed more thoroughly and evenly. Smashing and mixing functions are integrated in the device, with improved food production efficiency, and motor damage caused by excessive material resistance during smashing can be effectively prevented, thereby prolonging the service life of the mixer, and also effectively prevent material adhesion to the inner wall of the body. In addition, the device can effectively absorb shock with a good shock absorption effect, thus reducing noise and prolonging the service life.

The invention discloses a yarn bearing platform reciprocating transfer device used for textile use, and belongs to the field of textile processing machinery auxiliary equipment. A horizontal push mechanism and a platform reciprocating mechanism of the yarn bearing platform reciprocating transfer device are sequentially and fixedly arranged on the upper side of a horizontal movement base in the horizontal direction. A transmission rotation plate is fixedly arranged on the upper side of a rotation gear. A reciprocating gear on the end portion of the transmission rotation plate is connected withan arc-shaped rack in a meshed manner. A horizontal movement guide rod is arranged on guide rod supports in a sliding manner. A push rod connection plate is arranged between the horizontal movement guide rod and the reciprocating gear. A reciprocating guide plate is arranged on reciprocating guide rods in a sliding manner. A retreating tension spring is arranged between the reciprocating guide plate and a horizontal movement base in a horizontal connection manner. A yarn discharge platform is horizontally arranged on one side above the reciprocating guide plate. A lifting regulation mechanismis vertically arranged between the yarn discharge platform and the reciprocating guide plate. The yarn bearing platform reciprocating transfer device is reasonable in structural design, the yarn discharge platform can continuously and stably conduct horizontal movement motion in a reciprocating manner, the horizontal movement position and the yarn feeding height of the yarn discharge platform canbe regulated according to requirements, and requirements of production and use are met.

The invention discloses a landing buffering device for an unmanned aerial vehicle. The landing buffering device comprises an outer bag and an inner bag which is composed of an inflation framework. After being inflated, the inflation framework of the inner bag comprises four cylindrical main air columns in the same shape, the top surfaces of the main air columns are located on the top plane, and the bottom surfaces of the main air columns are located on the bottom plane. The main air columns are connected through side air columns and the projections of the side air columns on the top plane are distributed along the sides of a rectangle. The outer bag is used for wrapping the inner bag and is in a rectangular solid shape or a cube shape after being inflated, the height of the outer bag is larger than or equal to that of the main air columns, and the projection of the outer bag on the top plane covers the projections of the main air columns and the side air columns. The landing buffering device for the unmanned aerial vehicle can be in a fixed square shape after being inflated, the fixed shape of the unmanned aerial vehicle can be guaranteed in the landing process of the unmanned aerial vehicle, even though the unmanned aerial vehicle is affected by air resistance, the unmanned aerial vehicle does not impact on the ground directly, and therefore the good unmanned aerial vehicle protection effect can be achieved.

The invention discloses an active type coil spring suspension which comprises a spring pre-tightening force regulating device, a suspension height regulating device and a shock absorber (15), wherein the spring pre-tightening force regulating device comprises an upper spring seat (8), a coil spring (12), a lower spring seat (13), a pull rod (11), a pre-tightening driven gear (9) and a pre-tightening power device; the pre-tightening driven gear (9) is rotatably arranged on the upper spring seat (8) through upper and lower bearings (10); the pull rod (11) is connected with the pre-tightening driven gear (9) through thread fit and passes through the upper spring seat (8), the coil spring (12) and the lower spring seat (13); the lower end of the pull rod (11) is provided with a limit clamping piece (14); and the pre-tightening power device is matched with the pre-tightening driven gear (9). After adopting the structure, the coil spring suspension has the advantages of simple structure, light weight, small volume, low failure rate, low production cost, convenient maintenance, good stability, active regulation capability of the spring pre-tightening force and the suspension height, and the like.

The invention relates to the technical field of batteries, in particular to a heat dissipation type vibration-proof new energy battery device. The heat dissipation type vibration-proof new energy battery device comprises a base, wherein a box is arranged on the base; the box is internally provided with a plurality of spacer plates in a uniformly-spaced mode from left to right, and a battery cavityis formed between every two adjacent spacer plates; fixed blocks are arranged on two sides of the box respectively, and sliding supporting plates are arranged on two sides of the base respectively; aplurality of elastic blocks are arranged at the bottom of the box in the uniformly-spaced mode, and an elastic component is arranged between every two adjacent elastic blocks; the box is provided with two groups of heat dissipation components at intervals from top to bottom, and each annular sleeve is arranged on the periphery of the corresponding battery cavity in a sleeving mode respectively; an air suction nozzle is arranged at one end of a heat dissipation sleeve, an air suction port of a micro air suction machine is communicated with the air suction nozzle, a plurality of air inlet nozzles are arranged at the other end of the heat dissipation sleeve, and each air inlet nozzle is provided with a filter screen. According to the heat dissipation type vibration-proof new energy battery device, the vibration can be reduced, the stability is high, and a vibration-proof effect is achieved; the ventilation effect and heat dissipation effect can be improved, and the annular sleeves are prevented from being blocked by dust to influence the heat dissipation effect.

The invention relates to the technical field of new energy and discloses new energy power battery fixing device comprising a placement box. A sealing strip is arranged at the top of the placement box,a clamping device is arranged in the placement box, a cooling fan is fixedly installed on the surface of the placement box, a sealing device is arranged on the surface of the cooling fan, and a threading hole is formed in the surface of the placement box. According to the new energy power battery fixing device, the top of the fixing device is sealed through the sealing strip; dust of the coolingfan is filtered through the filter screen; when the cooling fan rotates, a cleaning brush is driven to rotate so as to clean dust on the surface of the filter screen; the fixing device is convenient to seal, dust on the surface of the filter screen is convenient to clean, the probability of blockage of the filter screen is reduced, accumulation of dust on the surface of the filter screen is reduced, the heat dissipation effect is improved, the sealing performance of the fixing device is improved, and the content of dust in the fixing device is reduced.

The invention discloses a stone removing machine for flour processing. The machine comprises a body, the top of the body is provided with a feeding hopper, a dust removing chamber is arranged inside the body, the feeding hopper is connected to the dust removing chamber, the dust removing chamber is provided with a stirring device, the bottom end of the dust removing chamber is provided with a baffle plate, the bottom end of the baffle plate is connected with a driving device, the right end of the dust removing chamber is connected with a dust cleaning device, a guiding plate is disposed underthe baffle plate, the right end of the guiding plate is fixed to the inner right end of the body, the left end is obliquely disposed downward, a sieve stone device is disposed below the guiding plate,a discharging port is formed in the side wall of the body of the left side of the sieve stone device, the discharging port is provided with a discharging guide plate, and the bottom end of the body is provided with a shock absorption base. The machine can firstly clean wheat, and then perform subsequent screening, the dust removal effect is good, and vibration and noise during work of the machineis reduced.

The invention discloses an electric pallet truck. The electric pallet truck comprises a driving system, a control and steering system, a lifting connecting rod assembly, a truck body system, a hydraulic system and an electrical system, wherein the hydraulic system and the electrical system are correspondingly arranged inside the truck body system and are connected with the driving system, the lower end of the control and steering system is fixedly connected with the driving system or the hydraulic system, the upper end of the control and steering system is bent to extend above the truck body system, the lifting connecting rod assembly is arranged on one side of the truck body system in the movement direction and is in rotating connection with the truck body system, the other side of the truck body system is connected with a pedal assembly in a turnover mode, and a tilting force component which is always turned over upwards and a buffer damping component are arranged in the pedal assembly. According to the electric pallet truck, when the carrying work is heavy, a standing-driving type operation can be carried out, buffering and vibration reduction can be achieved, the comfort of a driver is improved, the fatigue is relieved, and the working efficiency is improved; and when the electric pallet truck needs to be operated in a narrow space, and walking type operation can be realized only by folding and storing the pedal assembly.

The invention discloses a slaughtering device which comprises a base, a driving mechanism and an imprisoning tank. The imprisoning tank comprises a first rotating table, a second rotating table, a first splint, a second splint, a top cover, a bottom plate and a neck pressure plate; the first rotating table is provided with a neck clamping mechanism and a turnover mechanism; the neck clamping mechanism comprises a neck clamping door and a neck clamping cylinder; the upper part of the neck clamping door is provided with a neck placement concave cavity and the neck placement concave cavity is in slide fit with two parallel guide rails arranged on the first rotating table; the turnover mechanism comprises a fixture and a fixture cylinder; the neck pressure plate is positioned above the first rotating table and the length direction of the neck pressure plate is vertical to the moving direction of the neck clamping door; the driving mechanism comprises a transmission shaft; both a first chain and a second chain are in transmission connection with the transmission shaft; and the transmission shaft is also sequentially connected with a speed reducer and a motor. The slaughtering device provided by the invention has a simple structure and high slaughtering efficiency; labor intensity and cost of workers can be reduced; and the slaughtering device has a high safety coefficient and long service life and is also beneficial for showing live killing and ensuring meat quality of beasts.

The invention discloses a power transmission mechanism used for a new energy car. The power transmission mechanism comprises a buffer device, a transmission device, a lubricating device and an L-shaped handle. The buffer device comprises a first partition board, a bottom board, a moving board, a sleeve, a telescopic sleeve, an extrusion board, buffer rods, a reset spring, a buffer sliding block, a buffer sliding groove, a first limiting sliding block, a first limiting sliding groove, a second partition board, a second limiting sliding block, a second limiting sliding groove, buffer rubber blocks and a supporting rod; the first partition board and the second partition board are fixedly connected to the upper surface of the bottom board, the side wall of the moving board is in sliding connection with the outer surfaces of the first partition board and the second partition board, the two buffer rubber blocks are fixedly connected to the lower bottom face of the moving board, and two buffer rods are fixedly connected to the lower bottom faces of the buffer rubber blocks. The power transmission mechanism is good in buffer damping effect, excellent in transmission property, more obvious in lubricating effect and capable of prolonging the service life.

The invention relates to a damping base facilitating an electrical test. The damping base comprises a supporting base and a liftable horizontal supporting plate, horizontal sliding grooves extending towards the axis of the horizontal supporting plate are formed in the middles of the periphery of the horizontal supporting plate, and vertical supporting plates in sliding fit with the horizontal sliding grooves are arranged in the horizontal sliding grooves in a penetrating manner. First rubber plates located above the horizontal supporting plate are arranged at the inner sides of the vertical supporting plates in parallel, and first springs are connected between the first rubber plates and the vertical supporting plates. A connecting frame is fixedly connected to the middle of the bottom surface of the horizontal supporting plate. A water storage cylinder is arranged in the middle of the inner bottom face of the supporting base, air cylinders communicated with the water storage cylinderare symmetrically arranged at the left side and the right side of the water storage cylinder, pistons are horizontally arranged in the air cylinders, and piston rods are fixedly connected between thetops of the pistons and the bottom of connecting frame. According to the damping base, electrical equipment can be effectively buffered and damped in multiple directions, so that the electrical equipment can be effectively protected, resonance among the equipment can be avoided, the influence on the use of the equipment is avoided, and the service life of the electrical equipment is effectively protected.

The invention discloses a new energy automobile energy storage battery box convenient to store and take. The battery box comprises a bottom plate. The upper surface of the bottom plate is fixedly connected with the lower surface of a power source, the upper surface of the power source is fixedly connected with the lower surface of a switch, the upper surface of the bottom plate is fixedly connected with the lower surface of a box body, and the right side face of the box body is fixedly connected with the left side face of a driving device. According to the new energy automobile energy storagebattery box convenient to store and take, a motor, a driving gear, a driven gear, a third rotating shaft, a third bearing, a fourth rotating shaft, a fourth bearing, a box body, a second threaded column, a fixing block, a stop block, a push block, a connecting rod, a first sliding sleeve and a supporting plate are arranged. The fixing block drives the push block to move rightwards, the push blockdrives the connecting rod to move upwards, the connecting rod drives the stop block to move upwards, the stop block drives the supporting plate to move upwards, the supporting plate drives the batterybody to move upwards, and therefore people can take out the battery body more conveniently.

A rubber concrete hollow pier with internal and external constraint comprises an outer pipe, an inner pipe, stiffening plates, vertical partition plates and concrete protective layers; shear pins which are used for increasing the adhesive force between the concrete protective layers are distributed on the outer surface of the outer pipe; the concrete protective layers are coated on the outer wall of the outer pipe; the inner pipe is coaxially arranged inside the outer pipe; the plurality of stiffening plates with center holes are arranged between the outer pipe and the inner pipe along the axis direction; the inner edges of the stiffening plates are fixed on the outer wall of the inner pipe and the outer edges of the stiffening plates are connected with the inner wall of the outer pipe to form the empty chamber which is used for accommodating rubber concrete; the plurality of vertical partition plates are arranged in the empty chamber; two lateral sides of every vertical partition plate are fixed on the outer wall of the inner pipe and the inner wall of the outer pipe respectively. According to the rubber concrete hollow pier with the internal and external constraint, the effective boundary conditions of the three-direction compression state of the filled rubber concrete are established and accordingly the bearing capacity is improved, the damping effect is obvious, the size of the pier is effectively reduced, the detachment and installation is simple, the difficulty is reduced, waste rubber can be reused, resources are saved, and the environment-friendly effect is achieved.

The invention discloses polymer cement-based modified mortar. The polymer cement-based modified mortar comprises the following raw materials in parts by mass: 200 to 350 parts of fine sand, 80 to 140parts of cement, 20 to 30 parts of ceramic powder, 15 to 25 parts of clay, 10 to 30 parts of rubber powder, 5 to 15 parts of diatomite, 5 to 15 parts of graphite powder, 8 to 20 parts of polymer emulsion, 5 to 10 parts of basalt fiber, 3 to 8 parts of polyacrylonitrile fiber, 2 to 5 parts of a water-reducing agent, 1 to 3 parts of a defoaming agent, 2 to 5 parts of a coupling agent and 50 to 150 parts of water. The polymer cement-based modified mortar has advantages of high structural strength, high waterproofness, high toughness, high bending strength, high volume stability, high durability,high freezing resistance, high early strength and good use effect, and is not liable to crack.

The invention provides an elastic coupler. The elastic coupler comprises a first half coupler, a second half coupler and a rubber cushion. The first half coupler and the second half coupler are identical in structure. The first half coupler is made of stainless steel. The first half coupler is provided with groove portions and protrusion portions. The groove portions and the protrusion portions are arranged alternately. The first half coupler is provided with a shaft hole. The shaft hole is provided with a key groove. The rubber cushion is installed between the first half coupler and the second half coupler and attached to the groove portions. A screw hole is formed in the axial face of the first half coupler and communicates with the shaft hole. The center of the screw hole and the center of the key groove coincide. The height of each protrusion portion does not exceed the thickness of the rubber cushion. Each protrusion portion is provided with a chamfer. The elastic coupler is simple in structure, easy to manufacture, convenient to assemble and compact in combination, the elastic coupler is made of the stainless steel material, the torque bearing capacity and rigidity are improved, and the corrosion resistance requirement for the coupler under specific working conditions is met.