59results about How to "Improve mute effect" patented technology

The invention relates to an epoxy resin pouring type transformer with built-in microcirculation cooling channels and a heat dissipation method of the epoxy resin pouring type transformer, and belongs to the technical field of power transformers. The epoxy resin pouring type transformer comprises an iron core, a low-voltage winding, a high-voltage winding and a heat dissipation shell, the low-voltage winding and the high-voltage winding are completely impregnated and wrapped by an epoxy resin composite material through a vacuum pouring process, an integrated epoxy resin pouring body is formed after curing, and a three-dimensional communicated bionic microcirculation cooling channel network is arranged in the epoxy resin pouring body; the heat dissipation shell is in close contact with the outer surface of the epoxy resin pouring body through the high-heat-conductivity insulating medium. According to the invention, the heat dissipation efficiency can be remarkably improved, and a cooling medium (air) is directly guided to a microscopic area around the winding conductor through a three-dimensional communicated and tree-shaped fractal bionic microcirculation cooling channel network, so that the effective heat exchange area and the heat exchange strength are greatly increased, and internal heat can be accurately and efficiently taken away.

The utility model relates to generator set auxiliary equipment technical field discloses a diesel generating set mute big cover convenient for overhauling, including cover body, the cover body top is equipped with the cover body that is composed of two symmetrical cover plates, and the cover plate is through the sliding block and the inverted T type sliding slot of cover body top sliding fit, the inner wall of cover body is equipped with buffer mechanism, and the support arm of buffer mechanism is supported through the elastic support rod, and the support arm end is equipped with gyro wheel no.

This invention provides a wind-cooled horizontal freezer and its operation control method. The freezer includes: an inner liner having a bottom wall and a stepped wall bent upwards from the bottom wall; a cover plate installed in the inner liner, forming a refrigeration chamber with the inner liner, wherein an evaporator in the refrigeration chamber is arranged side by side with the stepped wall in the left-right direction; multiple air outlets located in the upper part of the storage compartment; an auxiliary air outlet located in the lower part of the storage compartment; and a control system configured to: upon receiving a compressor start command, control the compressor to run, control the fan to run, and control the fan to deliver air to the storage compartment through the multiple air outlets but not through the auxiliary air outlets; during this process, when a human body signal is sensed, control both the multiple air outlets and the auxiliary air outlets to deliver air, or control the multiple air outlets to stop delivering air while the auxiliary air outlets deliver air.

The invention discloses an axial flux permanent magnet synchronous reluctance motor rotor based on modular harmonic counteracting, the rotor is designed in a three-in-one mode of structure modularization, magnetic barrier gradient and phase computable dislocation, a rotor assembly is formed by splicing N fan-shaped rotor modules along the circumference, and the adjacent modules are provided with optimal dislocation angles calculated according to the harmonic counteracting principle. The sum of target harmonic magnetic field vectors generated by each module is zero; a U-shaped magnetic barrier array of which geometric parameters are monotonically changed in a gradient manner is arranged in the fan-shaped rotor module, and a permanent magnet group is embedded in the fan-shaped rotor module; main electromagnetic harmonic waves are offset from the source, magnetism gathering and resistance increasing functions are decoupled, the mechanical robustness and the electromagnetic performance of the motor are improved, meanwhile, overall machining is converted into standardized module assembling, the manufacturing cost and the maintenance difficulty are reduced, different motor pole numbers can be flexibly adapted, and the service life of the motor is prolonged. The method is suitable for high-end application scenes such as new energy automobiles, industrial driving and aerospace.

The utility model discloses an electronic valve and refrigeration equipment relates to refrigeration control technical field, wherein, electronic valve electronic valve, including lower valve seat subassembly, upper valve seat subassembly, valve needle subassembly and silencer, and lower valve seat subassembly is equipped with the intercommunication and valve mouth, and the valve cavity is formed with upper valve seat subassembly together, valve needle subassembly can be installed in upper valve seat subassembly, is used for opening and closing valve mouth, silencer is located in valve needle subassembly periphery, and its lateral wall is equipped with the sound attenuation hole, and the bottom is sealed butt joint with valve mouth circumference, and the upper end is spaced apart with upper valve seat subassembly, forms the flow passage of refrigerant circulation. Through setting up the silencer with the sound attenuation hole around the valve mouth, the big bubble in the refrigerant is refined into the small bubble, reduces the noise when its breakage, realizes efficient noise reduction. Since the main noise source concentrates in the valve mouth area, this arrangement can realize accurate noise reduction, and improve the overall mute performance. The flow passage formed between the silencer and upper valve seat subassembly helps impurities to be discharged with the refrigerant smoothly, avoids entering the transmission component gap.

The utility model relates to the technical field of air compressors, and particularly discloses an air compressor with a bottom air inlet structure, the air compressor comprises a bottom plate, a top plate, a back plate, a panel and two side plates, the back plate, the panel, the side plates, the bottom plate and the top plate are connected to define a closed working cavity, and a first air inlet channel for air flowing is formed in each side plate; a first air outlet hole is formed in the side wall, close to the working cavity, of the first air inlet channel; the bottom plate is provided with a second air inlet hole, and air flows into the first air inlet channel through the second air inlet hole and enters the working cavity through the first air outlet hole. The air inlet holes are all located below the air compressor and hidden in position, the overall attractiveness and the design sense of the air compressor are effectively improved, and the space limitation is small when the air compressor is used; an airflow wall is formed when air flows in the air inlet channel from bottom to top, part of noise spread through airflow can be blocked, and the mute effect of the air compressor is improved.

The invention discloses a self-repairing mute tire and a preparation method thereof, and relates to the technical field of tires, the self-repairing mute tire comprises a tire body, and a self-repairing rubber layer and a mute material which are sequentially attached to the inner wall of the tire body from inside to outside; the self-repairing adhesive layer is prepared from the following components: epichlorohydrin rubber, acrylate rubber, a rosinyl phenyl phosphine oxide isoxazolyl functional polymer, 4, 4-chloroformyl phenyl ether, a catalyst, 2, 2-bis [4-(4-aminophenoxy) phenyl]-1, 1, 1, 3, 3, 3-hexafluoropropane, trithiocyanuric acid, a filler, an accelerant TMTD (Tetramethylthiuram Disulfide) and an auxiliary agent; the rosinyl phenyl phosphine oxide isoxazolyl functional polymer comprises structural units introduced through a condensation polymerization reaction of the following monomers: glycerol triabietate, bis (4-carboxyl phenyl) phenyl phosphine oxide and 3, 5-isoxazoledicarboxylic acid. The tire is remarkable in self-repairing effect, good in mute performance, sufficient in performance stability and long in service life.

The utility model provides a kind of high-speed fan, including: motor assembly;Fan shell, sleeve joint motor assembly, the direction of the air flow produced by the outer periphery of cooperation motor assembly is formed into air inlet end and air outlet end respectively, the surface of motor assembly located at air outlet end is equipped with several self central outward helical extension's air deflector;Annular air inlet cover, connect the air inlet end of fan shell;And arc air outlet cover, connect the air outlet end of fan shell, the outer wall of fan shell, the inner wall of arc air outlet cover is divided by air deflector and is formed into several helical air ducts arranged in ring, air flow produced by motor assembly is shunted as sub-air flow by helical air duct, and sub-air flow is independently emitted outward from the air outlet opening in the center of arc air outlet cover.The utility model can improve air duct structure, effectively increase the air output of fan under the premise of constant motor power, and improve the effect of silence.

This invention discloses a control method, storage medium, and air conditioner for silent operation of an air conditioner, belonging to the field of air conditioning control technology. The method includes: when the unit is in cooling mode, if a silent operation command is received, the following steps are executed: detecting the unit's low operating pressure; if the unit's low operating pressure is within a target low pressure range, then successively reducing the compressor frequency according to a set first gradient until the unit's low operating pressure after the compressor frequency reduction exceeds the upper limit of the target low pressure range; then controlling the compressor to operate at the frequency adjusted in the previous reduction; and detecting the unit's high operating pressure after the compressor operates at this frequency; if the unit's high operating pressure is within a target high pressure range, then successively reducing the outdoor fan speed according to a set second gradient until the unit's high operating pressure after the outdoor fan speed reduction exceeds the upper limit of the target high pressure range; then controlling the outdoor fan to operate at the speed adjusted in the previous reduction. Using this invention, while ensuring that the unit's basic capabilities meet requirements, the compressor frequency and outdoor fan speed can be further reduced, optimizing the silent operation effect.

This utility model provides an indoor unit for an air conditioner. The indoor unit includes a housing, multiple swing blades, and a drive device. A support frame is provided inside the housing, and an air outlet is provided on the housing. Multiple swing blades are disposed inside the housing and adjacent to the air outlet; the multiple swing blades are arranged sequentially and at intervals along the length of the air outlet on the support frame; each swing blade includes a fixed part and a movable part, the fixed part and the movable part are connected, the fixed part is located on the air inlet side of the movable part, the fixed part is fixedly set to the support frame, and the movable part is made of a flexible material. The drive device is configured to drive the movable part to swing relative to the fixed part, and is configured such that the swing direction of at least one movable part is different from the swing direction of the other movable parts. This utility model solves the problem of the single air supply mode of existing air conditioner indoor units, thereby improving the diversity of air supply modes, making the airflow of the air conditioner more natural, reducing the direct blowing sensation of the airflow, and improving the user experience.

The utility model discloses a double-layer shell high-strength corrosion-resistant valve which comprises a valve body, a valve shell is arranged outside the valve body, a valve element is arranged in the valve shell, and the two ends of the valve shell are fixedly connected with pipelines communicated with the valve shell. The two pipelines are slidably connected with protective shells matched with the valve shell in a sleeving mode, the opposite ends of the two protective shells are open, sound insulation cotton is fixedly connected to the inner walls of the protective shells, and the two pipelines are fixedly connected with fixing plates in a sleeving mode. The valve is reasonable in structure, the protective shell is arranged outside the valve shell, noise generated when the valve body works can be effectively isolated through the sound insulation cotton arranged in the protective shell, the mute effect of the valve body can be greatly improved, meanwhile, the valve shell can be protected, and the service life of the valve body is prolonged. And external collision and dust pollution are avoided.

This utility model discloses a hinge structure for a door frame, including a first leaf plate and a second leaf plate. The top and bottom of the first leaf plate near the second leaf plate are fixed with a fixing cylinder. A rotating cylinder is disposed between the two fixing cylinders. A shaft passes through the rotating cylinder and the two fixing cylinders, and an end cap is fixed to the top of the shaft. Multiple hemispherical grooves are formed on the lower surface of the rotating cylinder, and a ball bearing is disposed inside each groove. The bottom end of the ball bearing is in contact with the upper surface of the bottom fixing cylinder. In this utility model, a first leaf plate, a second leaf plate, two fixing cylinders, a rotating cylinder, a shaft, a ball bearing, an end plate, a sliding sleeve, and a guide plate are provided. The first and second leaf plates are connected to the door frame and the door respectively by bolts. The second leaf plate rotates by the rotating cylinder rotating on the surface of the shaft. During this process, the ball bearing supports the rotating cylinder, thereby reducing wear on the bottom of the rotating cylinder and achieving a better noise reduction effect.

The utility model discloses a low-noise dynamometer environment test chamber, which comprises an outer chamber arranged on the ground and an underground chamber arranged under the ground and positioned below the outer chamber, a platform frame, a dynamometer device partially penetrating out of the platform frame and a track laid on the inner bottom wall of the underground chamber are arranged in the underground chamber, a connecting plate in contact with the track is arranged at the bottom of the work testing device, a micropore sound absorption plate is arranged on the inner side wall of the underground cabin, and a sound insulation plate is arranged on the inner top wall of the platform frame. The micropore sound-absorbing plate is arranged on the inner side wall of the underground cabin, the micropore sound-absorbing plate has good sound-absorbing performance and can effectively absorb and reduce environmental noise, meanwhile, the sound-insulating plate is used for blocking the noise from being transmitted into the outer cabin from the underground cabin to a certain extent, the noise in the outer cabin is reduced, in addition, the underground cabin is arranged under the ground, and the noise in the outer cabin is reduced. And by combining with the outer cabin on the ground, not only is the underground space effectively utilized, but also the overall sound insulation performance is enhanced through the natural sound insulation effect of the underground space.

This invention belongs to the field of generator sets, specifically a containerized diesel generator set and a method for quieting the generator set, including an electric generator set; the quiet containerized data center diesel generator set also includes a first compartment and a second compartment; the first compartment has a connected generator compartment, an air intake compartment and an exhaust compartment, the electric generator set is fixedly installed in the generator compartment, and a cooling fan is fixedly installed in the exhaust compartment; the second compartment has a heat dissipation compartment and a flue gas treatment compartment; relying on the above-mentioned modular stacked design, it can be prefabricated in the factory in advance, with a short construction period, convenient combination and use, and at the same time, the overall structure is compact, the whole system occupies only about 50 square meters, which greatly saves the machine room space, saves construction costs, and realizes the stacked arrangement of high-power kVA 5-15kVA units and their auxiliary components, saving space and pipeline length.

This utility model belongs to the technical field of air supply ceilings, specifically relating to a soundproof laminar flow air supply ceiling. This ceiling is connected to a base plate via a rubber ring. The rubber ring has good elasticity and sealing properties, acting as a buffer to reduce vibration transmission between the base plate and the ceiling body, thereby reducing noise caused by vibration and improving sound insulation. The combination of a metal fixing ring and a magnetic ring allows the perforated plate to be directly fixed to the fixing holes on the underside of the laminar flow air supply ceiling by magnetic force, greatly saving installation time. When the perforated plate needs to be disassembled for cleaning, replacement, or repair, only a certain external force needs to be applied to overcome the magnetic attraction of the ring to separate the perforated plate from the metal fixing ring. Therefore, the perforated plate can be easily and quickly disassembled and assembled without additional tools, improving ease of use.

The utility model discloses a three -phase asynchronous motor with mute function relates to three -phase asynchronous motor technical field, the utility model discloses a three -phase asynchronous motor still includes: noise reduction mechanism, noise reduction mechanism sets up in the tail of three -phase asynchronous motor, and noise reduction mechanism is used for the noise of tail portion to carry out noise reduction, and sound absorption mechanism, sound absorption mechanism sets up in the output site of three -phase asynchronous motor, the utility model discloses the dust cover is positioned and is inserted with the positioning boss through the U -shaped block of inside, then the dust cover is fixed through screw, and the dust cover is limited with the cooperation of U -shaped block and positioning boss, reduces the shaking of dust cover, and the rubber pad can play the effect of shock attenuation when shaking, improves the mute effect, and the sound absorption cotton is in the rotation of radiating fan, absorbs the noise generated, improves the mute effect again, reduces the noise pollution in working environment greatly, thereby guarantees the comfort degree of staff.

The utility model relates to the technical field of frame wooden doors, in particular to a protective frame wooden door with a buffering function, which comprises a frame main body and further comprises three hydraulic hinges mounted on the left side in the frame main body; the wooden door body is movably installed through hydraulic hinges, a lock body is arranged at the right end of the wooden door body, and a handle is fixedly installed at the middle end of the front face of the wooden door body. Through the action of the hydraulic hinges, the frame wooden door has the advantages of buffering protection and noise prevention, and the problems that in the using process of an existing wooden door, if the door closing force is too large or the door closing force is affected by strong wind, the wooden door is prone to colliding with a door frame with large force, and the door closing effect is poor are solved. And the damage of the wooden door is easy to accelerate while large noise is generated, so that the service life of the wooden door is shortened.

The utility model discloses a sliding telescopic connecting assembly for a waist pillow and a chair back and a chair, and the sliding telescopic connecting assembly comprises a first connecting shell, a second connecting shell, a third connecting shell and a fourth connecting shell, the second connecting shell is used for being connected with the waist pillow and is arranged in the slide way in a sliding manner; the locking mechanism is arranged between the first connecting shell and the second connecting shell and has a locking state and an unlocking state, the second connecting shell keeps fixed relative to the first connecting shell when the locking mechanism is in the locking state, and the second connecting shell can slide relative to the second connecting shell when the locking mechanism is in the unlocking state; the lining is arranged between the inner wall face of the sliding way and the outer wall face of the second connecting shell so as to separate the inner wall face of the sliding way from the outer wall face of the second connecting shell. By means of the waist pillow, friction resistance in the sliding process can be remarkably reduced, the waist pillow can be adjusted more smoothly, and meanwhile abnormal sound in the using process can be reduced.

The present application relates to electric heating technology field, disclose a kind of using infrared super high efficiency electric heating, including shell, hot air duct, infrared conversion mechanism and infrared heating mechanism;Infrared conversion mechanism is arranged at the periphery of infrared heating mechanism, forms heat exchange cavity;The present application not only utilizes the heat generated by infrared heating mechanism itself to heat air, but also through the infrared conversion mechanism of outside, intercepts and absorbs the infrared generated by infrared heating mechanism, generates more heat, greatly improves the heating effect, and the thermal efficiency is higher;The bottom of the device is provided with universal wheel, which can be easily moved to the use area, is very flexible and convenient, and is more convenient to use;There is a heat insulation cavity between the side pipe wall of hot air duct and the shell wall, and a limiting guide plate and a point-break type heat insulation hole are arranged between the tuyere pipe wall and the shell, which maximally reduces the heat transfer to the shell, causes the shell to overheat, and generates a safety hazard for the user, and the safety is higher.

The self-lubricating mechanism comprises a slip sheet body, an oil supply assembly and a one-way control assembly are arranged in the slip sheet body, the one-way control assembly is arranged in the oil supply assembly, and the oil supply assembly is provided with an oil outlet structure extending to the side wall of the slip sheet body. The one-way control assembly can be matched and communicated with the oil supply assembly under the action of pressure generated by movement of the sliding vane body, so that lubricating oil is supplied between the sliding vane body and the air cylinder sliding vane groove through the oil outlet structure. The mechanism does not need to depend on centrifugal force for oil supply, pressure generated during low-frequency movement of the slip sheet body can drive the one-way control assembly to stably act, the oil supply assembly directly supplies oil to a friction interface, friction resistance is reduced, the one-way control assembly prevents oil from flowing back, continuous lubrication is guaranteed, and the phenomenon that the slip sheet stops moving and the abnormal sound generated by collision between the slip sheet and a roller is avoided. And the mute effect and the operation stability of the compressor are improved.

The utility model discloses an automobile air conditioner air pipe with a noise reduction structure. The automobile air conditioner air pipe comprises a flow guide shell, a noise reduction layer and a vibration reduction frame. Spiral flow guide ribs are arranged on the inner wall of the flow guide shell, the noise reduction layer is made of porous sound absorption materials and covers rib grooves, and the vibration reduction frame disperses vibration energy through elastic supporting strips. The flange plate and the sealing ring ensure airflow tightness, and the overhaul window is convenient to maintain. The thickness of the noise reduction layer is gradually changed, noise absorption and airflow smoothness are considered, and the vibration absorption effect is optimized through the elastic supporting strips. By means of the modular design, airflow noise and vibration transmission are effectively reduced, the mute performance of the air conditioning system is improved, and the air conditioning system is suitable for upgrading and reconstruction of various vehicle types and has high practicability and economical efficiency.

The application relates to the field of generator set noise reduction technology, in particular to a mute diesel generator set which comprises a mute box body and a mute door, the lower end of the mute box body is fixedly connected with support feet at four corners, an exhaust pipe mounting groove is arranged at the upper end of the mute box body, an exhaust guide pipe is connected in the exhaust pipe mounting groove, the bottom of the exhaust guide pipe is fixedly connected with a generator set host, and the generator set host is embedded in the mute box body, a host clamping and fixing mechanism is fixedly connected with the lower box wall of the mute box body, through-penetration type fixing screw holes are arranged at the lower part of the left end and the lower part of the right end of the mute box body, and a door embedding groove is arranged at the front edge of the mute box body. The adjustable external clamping and fixing structure and the composite multistage sound-absorbing and sound-insulating structure are arranged, the operation and installation stability of the generator set and the overall mute protection capability are considered, the small maintenance door structure is reserved, and the operation convenience of daily maintenance of the equipment is improved.

This utility model discloses a novel double-buffered hinge, comprising a hinge cup, a hinge arm, a first buffer assembly disposed within the hinge arm, and a second buffer assembly disposed on the hinge cup. A rocker arm assembly is provided between the hinge cup and the hinge arm to achieve hinged opening and closing. The rocker arm assembly includes an outer rocker arm and an inner rocker arm. The first buffer assembly includes a first damper and a first drive block, the first drive block being convexly connected to the inner rocker arm. The second buffer assembly includes a second damper and a second drive block, the second drive block being convexly connected to the outer rocker arm. When the hinge cup is opened or closed, the outer and inner rocker arms can be oscillated synchronously. The inner rocker arm can drive the first drive block to drive the first damper to achieve buffering, and the outer rocker arm can drive the second drive block to drive the second damper to achieve buffering. Therefore, the hinge of this utility model has a double-buffered function, and its safety, protection, quietness, and durability are all good, making it of great market value.

The utility model relates to the technical field of wooden door equipment, in particular to an outward-flat inward-opening double-sealing mute wooden door assembly which comprises two wallboards, two door frames, a plurality of sealing strips and a door leaf. The two sides of the door leaf are correspondingly provided with a set of door frames and wallboards. One end of the wallboard is connected with the outer side face of the wall, and the side, away from the door leaf, of the door frame is fixedly connected with the side face of the wall. The outer side face of the door frame is fixedly connected with the side, facing the wall body, of the other end face of the wallboard, and a first sealing part is arranged at the other end of the wallboard. A protruding second sealing part is arranged at the end, close to the wall plate, of the door frame, and the first sealing part and the second sealing part are adjacent and staggered. And avoiding openings are formed in the positions, corresponding to the first sealing part and the second sealing part, of the door leaf. The inner side faces, facing the door leaf, of the first sealing part and the second sealing part are each provided with a sealing strip. And the first sealing part, the second sealing part and the door frame form two stop openings, so that the stability and the bearing strength of the structure are improved, and the service life is longer.

The application discloses a mute door lock assembly and belongs to the technical field of locks. The mute door lock assembly comprises a lock body, a slanting lock tongue and a main lock column which are arranged on the lock body in an extendable mode, and a lock cylinder hole is formed in the lock body. The lock body comprises a lock body and a lock cover, the lock body and the lock cover are fixedly connected through screws, mounting holes are formed in the lock body and the lock cover, a mounting column is arranged between the lock body and the lock cover, screw holes are formed in the mounting column, the mounting column is opposite to the mounting holes, the screws are connected with the screw holes through the mounting holes, and the mounting of the lock body and the lock cover is realized. A mute structure is further arranged in the lock body. The mute door lock assembly has the beneficial effects that the first magnet and the second magnet are arranged, the second magnet generates a certain repulsive force on the first magnet when the first magnet moves to the limit position, the push plate is prevented from impacting the limiting structure, i.e., the lock body, and the impact sound is reduced.

The utility model discloses a space capsule convenient to disassemble, which relates to the technical field of sleep cabins and comprises a support framework, support legs, a modular assembly component and a storage component. The supporting legs are fixedly arranged at the bottom of the supporting framework, a cabin shell is fixedly arranged on the peripheral surface of the supporting framework, and a storage box is fixedly arranged at the bottom of the cabin shell; the bottom of the cabin body shell is fixedly provided with a modular assembling assembly convenient to disassemble. A storage and storage assembly facilitating storage of articles is fixedly arranged on the inner wall of the storage box. The motor drives the screw rod to drive the connecting cross rod and the driving side plate, and stable lifting of the lifting bottom plate and the storage bin is achieved through sliding of the guide rod in the inclined guide groove and linkage of the driving connecting rod and the driven connecting rod. A user can lift the storage space to a proper height only by pressing a key, so that the inconvenience of storing and taking articles by stooping or squatting is thoroughly avoided, and the operation convenience, safety and barrier-free universality are remarkably improved.

This utility model discloses an air conditioning pipe expansion joint clamping block, including a lower clamping block and an upper clamping block. A bracket is fixedly installed in the middle of the lower outer surface of the lower clamping block. Semi-circular pipe limiting grooves are formed between the left and right ends of the upper outer surface of the lower clamping block and the left and right ends of the lower outer surface of the upper clamping block. A semi-circular rubber block is adhered in the semi-circular pipe limiting groove. A snap-fit ​​component is fixedly installed in the middle of the upper outer surface of the lower clamping block. The air conditioning pipe expansion joint clamping block of this utility model utilizes the expansion of the semi-circular rubber block under pressure to compress the pipe, improving stability, resisting vibration during air conditioning operation, and preventing pipe loosening. The snap-fit ​​component facilitates quick assembly and disassembly between the upper and lower clamping blocks.

This utility model discloses a high-strength silent bed, including a support frame (1) and two bed boards (2) at the front and back. The inner ends of the two bed boards (2) are supported by the support frame (1). Triangular or T-shaped iron plates (3) are provided on both sides of the support frame (1). One end of the iron plate is fixed to the support frame (1), and the other two ends of the iron plate are respectively hinged to the two bed boards (2). A headboard (4) is provided on the outer end of the bed board (2). Two connecting rods (5) are provided between the headboard (4) and the bed board (2). One end of the connecting rod (5) is hinged to the lower part of the headboard (4), and the other end of the connecting rod (5) is hinged to the bed board (2). The inner side of the headboard (4) is provided with a support block (6) located at the bottom of the corresponding bed board (2). The bottom of the bed board (2) is provided with a groove (7) corresponding to the position of the support block (6). This utility model has the advantage of good noise reduction.

The utility model discloses an anti-puncture tire and a vehicle, belongs to the technical field of tires, and aims to solve the problem that dynamic balance is affected by flowing of self-repairing glue in an existing anti-puncture tire, the anti-puncture tire comprises a rubber tire body (1) and a tire core (2), the rubber tire body (1) is sleeved on the outer side of the tire core (2), the tire core (2) is made of elastic closed-cell foaming materials, and the rubber tire body (1) is sleeved on the outer side of the tire core (2). An adhesive layer (3) is connected between the rubber tire body (1) and the tire core (2) in a matched manner. The tire cavity of the anti-puncture tire contains the tire core made of the elastic closed-cell foaming material, and the tire core can achieve the effects of thickening the tire wall and supporting the tire wall, so that the problem of air leakage when the side surface of the tire is punctured is solved.