81results about How to "Solve noise pollution" patented technology

The invention provides a multifunctional combined type electric mower used for mowing road green belts, modeling landscaping trees and mowing lawns, which comprises an electric power system, a controlsystem, a bearing mechanism, an elevating mechanism and a mowing mechanism. A storage cell or a double electric power system comprising a storage cell and a solar cell is used, and the mowing mode isautomatically controlled by a microcomputer to realize the mowing operation in multiple forms, such as sphere, cone, cylinder, plane, slope and the like. The mower has the characteristics of high automation degree, wide adaptability, convenient popularization and operation, resource saving, environmental protection and the like.

The invention discloses a string electronic aided teaching system, consisting of a teacher control platform, a teacher earphone, a teacher microphone, an aided teaching device, student earphones and a simulation microphonic musical instrument code; the teacher control platform is provided with n button switches which are arranged in parallel and the quantity of which is corresponding to the number of students; n signal ports of the n button switches are connected with the network port of the aided teaching device; the interface of the aided teaching device is connected with the student earphones and the simulation microphonic musical instrument code which is arranged on a traditional string instrument; the teacher control platform is connected with the teacher earphone and the teacher microphone; the micro-computer chip EP3C50F of the aided teaching device processes the audio signals of the simulation microphonic musical instrument code; subsequently, the signals are transmitted to the teacher earphone by the button switches; after being processed and amplified by the teacher microphone and the circuit in the teacher control platform, the voice of the teacher is transmitted to the student earphones to be monitored by the button switches so as to monitor the musical performance of a certain student or guide the student to practise.

The invention discloses an equipment key parameter early warning system and an implementation method thereof, which solve the problems that the equipment key parameters are judged and early warned byequipment in the prior art, so that the equipment key parameters need to be manually watched and reported to be abnormal, and the efficiency is not high. Moreover, the system of the invention transmits the key parameter data of the equipment to the system platform through the data acquisition module; the system platform can be deployed at any place, the data acquisition module can be connected forthe equipment, the system platform can be shared to carry out simultaneous detection and early warning on key parameters of a plurality of pieces of equipment at different places, and the processingefficiency is high. When the system is applied to perform equipment key parameter early warning, only the system platform needs to be deployed on a corresponding server or other carrier, and the dataacquisition module is connected with the corresponding equipment, so that internal transformation of the equipment is not needed, the realization is simple, and the deployment is fast.

The invention discloses an air reverse skid conveying system, which comprises multiple air reverse skids, an inlet switching device and an outlet switching device for circularly conveying the air reverse skids at the inlet and outlet positions of the system, and two air reverse skids, which extend in parallel along a straight line, are opposite in conveying directions, and are connected between the two switching devices. The reverse skid conveying system disclosed by the invention completely adopts belt type or roller bed conveying, is frequency-variable and adjustable in operating speed frequency, meets the requirements of high-tempo conveying of the existing automobile plants, and solves the chain oil pollution and noise pollution problems at the same time. The spare parts of the air reverse skid conveying system are universal for absolutely most of the existing ground skids.

The invention provides a low-illumination image enhancement and denoising method, a low-illumination image enhancement and denoising system, computer equipment and a computer readable storage medium.The low-illumination image enhancement and denoising method comprises the steps: extracting a black and white grayscale image in a YUV format of an original low-illumination image as an initial brightness image; establishing an objective function for solving the brightness component according to the initial brightness map, and solving the brightness component; establishing an objective function for solving a reflection component according to the original low-illumination image and the brightness component, and solving the reflection component; and obtaining a processed image according to the brightness component and the reflection component. The technical scheme of the low-illumination image enhancement and denoising method, for a low-illumination image, can avoid the noise pollution problem caused by alternate decomposition on the basis of a Retinex model and by means of a sequential decomposition method, and introduces a coefficient matrix in the decomposition process to further enhance comparison and suppress noise, so as to carry out enhancement and denoising processing on the low-illumination image at the same time.

The invention provides a high-performance intelligent three-phase minimum quantity lubrication system and a use method thereof. The system comprises a minimum quantity lubrication digital quantification supply unit, a water digital quantification supply unit, a compressed gas supply unit, an intelligent control unit and an ejection unit, the water digital quantification supply unit is communicatedwith an external water source, and the compressed gas supply unit is communicated with a gas source. The use method of the system includes the steps of system power-on, system hardware setting, system parameter setting, program selection, starting, processing stop, system power interruption and the like. The processing performance and the processing quality of the minimum quantity lubrication system are effectively improved.

The inventionprovides a ceramic sound absorbing material and a preparing method and usage thereof. The ceramic sound absorbing material in the invention is obtained mainly by using corundum, silicon carbide, cordierite, silicate, assistant, and a foaming agent,and is a phase-typed porous sound absorbing material, which prevents fire, is weather-proof, has good physical and chemical properties, fully meets sound absorbing and sound insulating requirements simultaneously, can solve the problem of noise pollution during production and lives to the greatest extent, and is low-carbon and environmental-friendly. The preparing method of the ceramic sound absorbing material in the invention has simple processes and low cost, takes short time, and is easy to be implemented. The ceramic sound absorbing material in the invention can be used as a building sound absorbing material, is easy to be constructed, has a good sound absorbing performance and high strength, is fire-proof, damp-proof, antifreeze, anti-aging, and resistant to chemical attack, can be used in long term without any organic volatile matter, and is a green and environmental-friendly sound absorbing and sound insulating material.

The invention discloses a comprehensive treatment system for a belt corridor, comprising a plurality of vibration damping parts installed under a belt frame, a sound insulation and energy dissipation board installed on the corridor bottom plate, and a belt suction plate in which a belt conveyor is incorporated. Sound insulation frame, the feed muffler frame located at the splice of the belt head, the discharge muffler frame located at the lower part of the belt outlet, and the dust collector muffler frame located at the upper part of the belt outlet; the closed belt is absorbed and insulated by the dust collector The dust in the frame is absorbed and eliminated, and the noise is absorbed and reduced by the feeding muffler frame, the discharging muffler frame, the belt sound-absorbing frame and the sound-insulating energy-consuming board, and the vibration noise of the belt conveyor on the corridor floor is eliminated by the vibration-absorbing parts. . The invention adopts vibration damping parts to eliminate the vibration noise of the corridor floor; the noise is absorbed and reduced by the feeding muffler frame, the discharge muffler frame and the belt sound insulation frame, the dust in operation is removed by the dust collector, and the dust collector muffler frame Eliminate the noise of the dust collector and completely solve the problem of noise pollution and dust pollution in the belt corridor.

The invention discloses an integrated water cooling cold water module unit which comprises a small cooling tower shell, a cooling system, a refrigerant circulating system and a functional module. Thecooling system, the refrigerant circulating system and the functional module are integrated in the small cooling tower shell. The cooling system comprises a fan, a water distributor, a cooling circulating pump, a sprayer and a cooling water tank, and the refrigerant circulating system comprises a low-power compressor, an evaporation cold-heat exchanger, a tube nest soaking type condenser, an indoor side heat exchanger and a gas-liquid separator; the functional module comprises a liquid storage tank, a drying filter and an expansion valve which are connected in sequence; the cooling water tankis arranged on the upper portion in the small cooling tower shell, and the low-power compressor, the liquid storage tank, the drying filter, the expansion valve and the indoor side heat exchanger arearranged on the lower portion in the small cooling tower shell. The evaporation cold-heat exchanger is arranged above cooling water of the cooling water tank, and the tube nest soaking type condenseris soaked in the cooling water of the cooling water tank; and the water distributor is arranged at the bottom in the cooling water tank.

The invention provides a hydrogen energy power overhead line system maintenance operation vehicle for a railway. The hydrogen energy power overhead line system maintenance operation vehicle for the railway comprises a vehicle shed, a vehicle frame and a hydrogen fuel cell system, wherein the hydrogen fuel cell system comprises a hydrogen storage system, a protective cover, a fuel pile, an intake-exhaust system, a heat dissipation system, a control system and a hydrogen supply system. According to the hydrogen energy power overhead line system maintenance operation vehicle for the railway, the problems of emission pollution and noise pollution of a traditional internal combustion vehicle are solved, the problem that the endurance mileage of a pure battery vehicle is short is solved, and integrated application of a high-power hydrogen fuel battery system on the overhead line system operation vehicle is achieved; a foundation is provided for application of the hydrogen fuel cell system on other track engineering machinery, the hydrogen fuel cell system can extend to the upper part of a contact network, the back side of a stand column and other higher and farther positions, and the maintenance operation of an area A, an area B, an area C and an area D of the overhead line system is met; meanwhile, tunnel wall maintenance can be considered, and the advantages of large working platform space and large load capacity are achieved.

The invention discloses a high-speed centrifugal spray dryer and relates to the technical field of dryers. The high-speed centrifugal spray dryer comprises a drying tower, a funnel and unit section guide rails. The bottom of the drying tower is fixedly connected to the top of the funnel, a negative pressure fan is fixedly mounted at the bottom of the funnel, a driving motor is fixedly mounted in the middle of the top of the drying tower, and centrifugal atomizers are fixedly mounted on both sides of the inner top wall of the drying tower; a high temperature thermal-insulation board, a sound reduction area and a sound refraction board are fixedly mounted in the side wall of the drying tower from inside to outside in sequence. According to the high-speed centrifugal spray dryer, a cleaning device can move up and down conveniently, convenience is provided for cleaning residues of materials adhering to the inner wall of the drying tower, the cleaning safety and stability are improved, theuse range is enlarged, circumferential rotation of the cleaning device can be indirectly achieved, the cleaning uniformity and thoroughness are enhanced, the cleaning efficiency is improved, and the problem of shutdown of the dryer for cleaning during operation is avoided.

The invention relates to an environment-friendly method for filling liquid nitrogen and liquid argon, belonging to the field of filling of low-temperature liquid. The pressure of a storage tank is transferred to a tank car since the pressure is released in a pressure returning way, so that the waste of nitrogen is avoided; the gas in the storage tank is converted into liquid by changing a plurality of different control valves when being filled, so that the noise pollution and the waste caused by releasing and discharging the pressure of nitrogen can be solved; and the difficulty that a large number of liquid nitrogen and liquid argon remained in a transfusion connecting pipe are wholly poured out is solved by adopting a gas extrusion method, so that the effects of energy saving and environment friendliness can be achieved, 12.5% of liquid nitrogen or liquid argon can be saved through the comparison of an actual test, and the environment-friendly method is simple and easy to operate.

The invention relates to a ground drilling machine capable of pumping soil and reducing sound for petroleum drilling and production. The ground drilling machine comprises a movable base, a second hydraulic rod and sound reducing cotton. A transmission box is arranged above the movable base, a control room is arranged on the left side of the transmission box, the transmission box and the control room are fixedly connected, and the transmission box and the movable base are movably connected. A support seat is arranged on the left side of the top end of the movable base, a main machine arm is connected to the top of the support seat, and a third hydraulic rod is disposed on the outer side of the main machine arm. The ground drilling machine has the beneficial effects that the ground drillingmachine adopts the arrangement of a drill bit, an internal thread, an external thread, a screw rod and the second hydraulic rod, the drill bit forms a detachable structure through the internal thread,the external thread and the screw rod, and before performing drilling and production work on an area to be subjected to drilling and production through the drill bit, the drill bit is subjected to screwing and fixing operation by an operator, so that the inner thread on the inner side of the top of the drill bit and the outer thread on the bottom end outer wall of the screw rod are screwed together.

The invention provides keyboard testing equipment. The equipment comprises a turntable, alarm devices, first workbenches, a noise sensor, a signal lamp, second workbenches, pressure sensors, a brush,a supporting rod, a third electric cylinder, a third workbench and a compressor. The alarm devices are installed on the upper end surfaces of the first workbenches, and the noise sensor is arranged onthe left side of the first workbenches. According to the design, the problem that in the process that users use a keyboard, noise pollution is generated is solved; the alarm devices are arranged on the upper end surfaces of the second workbenches, the pressure sensors are arranged on the front sides of the second workbenches, and the design solves the problem that the pressure resistance of the keyboard is insufficient in the production process; the compressor and the third electric cylinder are installed on the upper end surface of the third workbench, the brush is arranged on the right sideof the third electric cylinder, and the design solves the problem that during detection, detection results have errors due to dust in the keyboard. The testing efficiency is high, the operation is convenient, resources are saved, and the practicability is high.

The invention discloses an integrated water-cooling air-cooling heat pump module unit comprises a small cooling tower shell, a cooling system, a refrigerant circulating system and a functional module,wherein the cooling system, the refrigerant circulating system and the functional module are integrated in the small cooling tower shell. The cooling system comprises a fan, a water distributor, a cooling circulating pump, a sprayer, a cooling filler layer and a cooling water tank, and the refrigerant circulating system comprises a low-power compressor, an air cooling fin type heat exchanger, anopen spiral winding type condenser, a four-way valve, an indoor side heat exchanger and a gas-liquid separator; the functional module comprises a liquid storage tank, a drying filter, an electronic expansion valve and a plurality of one-way valves which are connected with one another; the low-power compressor is connected with the air cooling fin type heat exchanger and the open spiral winding type condenser through the four-way valve and then connected with the low-power compressor through the function module, the indoor side heat exchanger, the four-way valve and the gas-liquid separator.

The invention discloses a stirring device with a noise reducing function. The stirring device with the noise reducing function comprises supporting legs; the surfaces of the supporting legs are weldedwith a shock absorption trough; the inner wall of the shock absorption trough is connected with a supporting plate in a sliding manner; the surface of the supporting plate is welded with an outer shell; the surface of the supporting plate is welded with an inner shell; a cavity is formed among the inner wall of the outer shell, the surface of the supporting plate and the surface of the inner shell; the inner wall of the cavity is adhered to sound absorbing cotton; the inner wall of the shock absorption trough is connected with the surface of the outer shell in a sliding manner; the inner wallof the shock absorption trough is fixedly connected with springs; one end of each spring is welded with the surface of the supporting plate. The invention relates to the field of industrial equipment; according to the stirring device with the noise reducing function, a feeding stick is arranged, and the spiral feeding stick pushes a material in a feeding pipe at a uniform speed, so that the effects of facilitating uniform feeding and preventing a fed material from blocking are achieved; therefore, the problems that a common stirring device does not facilitate noise reduction, generates loud noise in use, and produces noise pollution to a certain degree are effectively solved.

The invention discloses an automobile automatic control honking device, method and system. The automobile automatic control honking device includes a video sensor, a microwave radar probe, a speed sensor and a controller, and the video sensor is used for detecting image information of a traffic scene in front of a vehicle; the microwave radar probe is used for obtaining distance information of objects around the vehicle; the speed sensor is used for perceiving speed information of the vehicle; the video sensor and the microwave radar probe are located on a bumper in front of the vehicle; and the controller is connected with the video sensor, the microwave radar probe and the speed sensor, and used for controlling the honking volume by fusing the image information of the traffic scene, thedistance information and the speed information. According to the automobile automatic control honking device, method and system, the noise pollution can be reduced, and safe driving of the vehicle isimproved.

The invention discloses a noiseless aluminum alloy section cutting device. The noiseless aluminum alloy section cutting device comprises supporting columns, a sound insulation layer, a fixed clampingdevice, a front cover, a soundproof box, a rear cover, a first servo motor, a chain, a fragment box, a rotary shaft, a fixed block, a saw blade, rocking bars, moving plates, bases, grooves, fixed baffles, a rectangular hole, a lead screw, workbench slide rails, second servo motors, driving shafts, nut seats, bearings and a workbench. The four supporting columns are arranged at the four corners ofthe lower portion of the workbench. The fixed block is arranged below the workbench. One side of the fixed block is connected with one end of the rotary shaft. The saw blade is welded to the other endof the rotary shaft. A gear is arranged on the position, between the saw blade and the fixed block, of the rotary shaft. The first servo motor is arranged on one side of the fixed block. The output end of the first servo motor is connected with the gear on the rotary shaft through the chain. The sound insulation layer is arranged on the lower portion of the workbench. The fragment box is arrangedbelow the sound insulation layer. The soundproof box is arranged on the workbench.

The invention discloses a rail transit noise reduction box type bridge and an external bonding noise reduction method of a rail transit box type bridge. The rail transit noise reduction box type bridge comprises a box type beam, wherein at least one first acoustic board used for reducing vibration noise and carrying out thermal insulation is installed on the outer side of the side wall of the box type beam; the first acoustic boards are arranged on the outer surface of the side wall of the box type beam at intervals through a first supporting mechanism and are arranged in a direction which is parallel with or in oblique crossing with the outer surface of the side wall of the box type beam; and / or at least one second acoustic board used for reducing the vibration noise and carrying out the thermal insulation is installed on the outer surface of the bottom board of the box type beam; the second acoustic boards are arranged on the outer surface of the bottom board of the box type beam at intervals via a second supporting mechanism; the second acoustic boards are arranged in a direction which is parallel with or in oblique crossing with the outer surface of the outer surface of the box type beam.

The invention provides a disc-type automated test apparatus including a turntable, an alarm, a first workbench, a noise sensor, a signal light, a second workbench, a pressure sensor, a hair brush, a support rod, a third electric cylinder, a third workbench and a compressor. The alarm is mounted on the upper end of the first workbench, the noise sensor is disposed on the left side of the first workbench, and such design solves the problem of noise pollution during the use of a keyboard by a user. The alarm is mounted on the upper end face of the second workbench, the pressure sensor is disposed on the front side of the second workbench and such design solves the problem of insufficient pressure resistance of the keyboard during the production process. The compressor and the third electric cylinder are mounted on the upper end face of the third workbench, the hair brush is disposed at the right side of the third electric cylinder, and such design solves the problem of inaccurate detection result caused by the dust inside the keyboard. The disc-type automated test apparatus has the advantages of high test efficiency, convenient operation, resource saving and high practicality.

The invention provides an aerogel waterborne two-component transparent soundproof coating, and a preparation method and application method thereof. The coating is prepared through mixing of the following components according to parts by weight: a component A: 69-73 parts of waterborne polyurethane resin, 5.0-5.7 parts of a film forming agent, 0.2-0.4 part of an organic silicon defoamer, 0.2-0.4 part of an organic silicon substrate wetting agent, 0.3-0.5 part of an organic silicon flatting agent, 20-25 parts of silicon dioxide aerogel water dispersions, and 0.1-0.2 part of an antiseptic; a component B: a silane coupling agent with an epoxy structure; and the ratio of the component A to the component B: 100 to 1.5-2.5. The coating and the preparation method and application method thereof provided by the invention have the advantages that good lighting effects can be ensured, and outdoor noises can be effectively reduced, so that building glass achieves good decorative, lighting and soundproof effects, and the living environment of people is improved.

The invention provides a special reinforcing agent for ready-mixed pervious concrete and a preparation method thereof. The special reinforcing agent for the ready-mixed pervious concrete includes thefollowing raw materials by mass: 40-45% of anti-cracking component, 20-25% of flexural component, 2%-4% of thickening component, 19-24% of adhesive component and 10-15% of water reduction component. The dosage of the special reinforcing agent in the pervious concrete is 2-3% of the mass of a cementing material. The reinforcing agent can not only effectively prevent the late shrinkage of the pervious concrete and reduce the stress cracking, but also significantly improve the flexural resistance and the frost resistance of the pervious concrete, ensures the mechanical property and the durabilityof pervious concrete pavements, and enhances the water retention and the slump retention of the previous concrete to meet the construction requirements of the ready-mixed concrete. The reinforcing agent is beneficial to prepare the premixed medium and high strength pervious concrete.

The invention discloses a purging method of a super high-rise steam pipeline and a cooling water tank used by the purging method. The purging method conducts purging according to the following steps of finding out parameters of the steam pipeline to be purged, designing the cooling water tank, manufacturing the cooling water tank, mounting the cooling water tank, performing purging treatment and verifying a purging result. When steam purging is carried out, a large amount of steam is prevented from overflowing. The problems of noise pollution and false fire alarms caused by exhaust of a largeamount of steam in the prior art are effectively solved, and meanwhile, pollution of the steam containing impurities to the environment is avoided. According to the purging method, independent sectional flushing with tap water is not needed, so that sectional flushing equipment, materials, labor cost and time are saved. The steam generated during boiler debugging and trial operation can be utilized during purging, and purging resources are saved. The method is particularly suitable for cleaning the steam pipeline of a super high-rise building.

The invention discloses a clean and efficient novel mining hydraulic excavator. The hydraulic excavator comprises a body, wherein the body comprises a rotary platform which is arranged in the body, and a cab is a movably arranged in the body through the rotary platform; the body is movably provided with a movable arm through the cab in the body, and the end part of the movable arm is movably provided with a bucket rod through a movable arm pin shaft, shaft sleeves are nested at the joint between the outer end surface of the movable arm pin shaft and the movable arm, and a pin shaft baffle is fixedly inserted into the side end surface of the movable arm pin shaft, and the pin shaft baffle is connected with the movable arm through baffle rings; and a bucket is movably arranged at the bottomof the bucket rod, a bucket nozzle set is arranged at the position, close to the bucket, of the front end of the bucket rod, and the bucket nozzle set is fixedly arranged at a cross beam of the rotaryplatform, and the shaft sleeves and the baffle rings are made of high-molecular polyethylene materials. According to the clean and efficient novel mining hydraulic excavator, the structure is compact, and the use is convenient; and moreover, a dust removing device is arranged, the shaft sleeves on the pin shaft are improved, so that the problem of dust and noise pollution in digging operation canbe effectively solved, the working environment of workers is improved, the personal safety of workers is guaranteed, and the operation efficiency is effectively improved.

The invention relates to the field of drilling mechanical equipment, and particularly discloses a drilling device for machining. The drilling device comprises a silencing base and a noise insulation box, wherein the lower end of the noise insulation box is connected with the upper end of the silencing base through a lifting support, a driving motor is arranged in the noise insulation box, an output end of the driving motor extends out of the noise insulation box and is detachably connected with a drill bit, a moving mechanism capable of horizontally moving on the silencing base is arranged atthe upper end of the silencing base, a damping block is arranged at the upper end of the moving mechanism, and one end of the damping block extends out of the moving mechanism and is connected with the upper end of the silencing base through a plurality of damping mechanisms. According to the drilling device for machining, noise generated in the working process of the driving motor is subjected tonoise insulation through the noise insulation box, meanwhile vibration generated due to drilling is reduced through the damping mechanisms, so that the noise is reduced, a good silencing effect is achieved, and the problem that the existing drilling device for machining is prone to generating noise pollution due to vibration of motor rotation and drilling operation is solved.

The invention discloses a punch. The punch comprises a feeding mechanism for transporting to-be-processed sheets and a rotating punching mechanism matched with the feeding mechanism and used for punching the to-be-processed sheets, the rotating punching mechanism comprises a first punching part for supporting the to-be-processed sheets and a second punching part matched with the first punching part and used for driving the first punching part to rotate to achieve punching. According to the punch, the problem of noise pollution caused by punch impact can be solved, and the service life of the equipment can be prolonged, the production cost can be lowered, meanwhile, due to the to-be-processed sheets can be transported while processing, the static waiting period of the to-be-processed sheetscan be omitted, and thus the processing efficiency can be improved.

The invention relates to a garbage vertical collection system based on the functions of automatically opening and closing a carriage cover, and belongs to the technical field of garbage collection systems. The garbage vertical collection system aims to solve the technical problem of improvement in the structure of the garbage vertical collection system with the functions of automatically opening and closing the carriage cover. According to the technical scheme, the garbage vertical collection system comprises a cover opening device, an infrared detection device and a carriage cover which are arranged at a garbage vertical collection opening; the cover opening device includes an electric push rod and a driving connecting rod; one end of the electric push rod is hinged to a first fixing lugarranged at the garbage vertical collection opening, and the other end of the electric push rod is hinged to the middle part of the driving connecting rod; one end of the driving connecting rod is hinged to a second fixing lug arranged at the edge of the garbage vertical collection opening, and a hook is movably arranged at the other end of the driving connecting rod; and a cover opening hanging lug is further arranged at the position, close to the other end of the driving connecting rod, on the carriage cover, and the hook is connected and fixed to the cover opening hanging lug in a hanging mode. The garbage vertical collection system is applied to the garbage collection systems.

The invention relates to the technical field of crushers for biological particle processing, in particular to a shock absorption and noise reduction crusher for biological particles. According to theprovided shock absorption and noise reduction crusher for the biological particles, a series of structures are designed and used, so that on one hand, the problems that a large amount of heat is generated when power sources, such as driving motors and other electrical components, for driving crushing blades are used for crushing work, although most crushers have the heat dissipation performance onthe driving motors, the large amount of heat can be transferred to crusher shells, consequently the heat of the crusher shells is not prone to dissipation, and then electrical components inside the crushers are prone to damage are solved; and on the other hand, the problem that noise pollution is caused due to vibration generated when the crushers conduct crushing work is solved, a large amount of raised dust generated in air is filtered and purified when the biomass particles are crushed, and the breathing quality of operators is improved.

The invention provides a deceleration strip capable of achieving clear punishment on different vehicle speeds. The upper end and the lower end of the cross section of the deceleration strip are provided with horizontal straight lines, and the two sides of the cross section are provided with a left curve and a right curve which are symmetrical; each curve is composed of a first cosine curve section (1) and a second cosine curve section (2), the first cosine curve section (1) is tangent to the lower-end horizontal straight line, the second cosine curve section (2) is tangent to the upper-end horizontal straight line, and the first cosine curve section (1) is tangent to the second cosine curve section (2). The deceleration strip has the advantages that strong bumping vibration punishment is applied to high-speed vehicles, the higher the vehicle speed is, the higher the punishment intensity is, and therefore a driver is reminded to learn a lesson and dares not to overspeed next time; low-speed vehicles can flatly drive through, and the riding comfort of the driver and passengers is better; the condition that an existing deceleration strip uniformly generates boring vehicle jumping bump and vibration impact no matter the vehicle speed is high or low is changed, induced noise is low, and the service life of vehicle parts and the deceleration strip is prolonged.

The invention discloses an integrated water-cooling low-temperature type air-cooling heat pump module unit which comprises a small cooling tower shell, a cooling system, a refrigerant circulating system and a functional module. The cooling system, the refrigerant circulating system and the functional module are integrated in the small cooling tower shell. The cooling system comprises a fan, a water distributor, a cooling circulating pump, a sprayer, a cooling filler layer and a cooling water tank, and the refrigerant circulating system comprises a low-power compressor, an air cooling fin typeheat exchanger, an open spiral winding type condenser, an indoor side heat exchanger and a gas-liquid separator; the functional module comprises a liquid storage tank, a drying filter, an economizer and a plurality of electronic expansion valves which are connected with one another; and the low-power compressor is connected with the open spiral winding type condenser, a three-way valve and the aircooling fin type heat exchanger through a four-way valve and then is divided into a main loop and an auxiliary EVI loop. The main loop is connected with the low-power compressor through the functionmodule, the indoor side heat exchanger and the gas-liquid separator, and the auxiliary EVI loop is directly connected with the low-power compressor through the function module.