38results about How to "Reduce collision friction" patented technology

The invention discloses a vibration-damping heat-insulation paint which comprises the following components by mass percent: 9.5-11.5% of chlorine ether resin, 5-6% of adhesive, 3.5-4.5% of melamine urea copolymerization resin, 18-21% of environment-friendly solvent, 14.5-16.5% of soft filler I, 13-15% of soft filler II, 18-20% of soft filler III, 3.8-5.8% of plasticizer, 1.5-2.3% of titanium pigment and 4-6% of hollow micro-bead. The invention also discloses a preparation method of the vibration-damping heat-insulation paint. The high-efficiency vibration-damping heat-insulation paint can be coated on various substrates, has advantages in various aspects such as heat insulation, heat preservation, fire prevention, water prevention, crack prevention, noise prevention, weather resistance, acid / alkali resistance, salt-fog resistance, corrosion resistance, vibration damping, durability and the like, is suitable for thermal protection and vibration damping at the external surfaces of spaceflight instruments and data recording instruments of aerospacecrafts and can be used for damping the impact friction and the like of containers and the like.

The invention relates to a motor bracket of an air conditioner outdoor unit, which is made of a metal plate, wherein two ends of the metal plate are respectively provided with an end plate for fixingand mounting, the middle part of the metal plate of the motor bracket is provided with a motor mounting hole for mounting a fan motor, the upper part and the lower part of the metal plate are providedwith airflow through holes respectively, and the two longitudinal side edges of the metal plate and the periphery of the airflow through holes are bended to the same side to form a metal plate turnededge. The motor bracket is characterized in that the airflow through holes are of round structures. The motor bracket for the air conditioner outdoor unit keeps the linear tracks of the airflow through holes consistent with or similar to the rotational flow tracks of fan yielding wind, and simultaneously enlarges the area of the airflow through holes, so that the total frictions between air groups and the motor bracket are reduced, the noises and the vibrations during air running are reduced, and the power consumption for overcoming the friction by the fan motor is reduced.

The invention discloses a conveyor with automatic sorting function. The conveyor comprises a base, wherein a supporting frame is fixedly arranged at the lower end of the base, a conveying belt is fixedly arranged above the base, and an identification plate is fixedly arranged in the middle of the conveying belt. According to the conveyor, by arranging a push plate and an adjusting rod, goods in acollecting box can be pushed into a transporting machine in a classified mode, the working efficiency of operators is improved; by arranging a rotating plate and an extending block, one side of the collecting box can be opened, the operators can conveniently and rapidly take out the goods in the collecting box; universal wheels arranged at the bottom of the collecting box enable the collecting boxto be used as a temporary transfer device; and by arranging a bevel hopper and buffer columns, the goods can be prevented from directly pressing and making contact with the conveying belt, and then increased abrasion of the conveying belt and internal parts is avoided; and the bevel hopper and a buffer device can effectively prolong the service life of the conveyor belt and the internal parts.

The invention discloses a protective structure for construction of a core tube inside a high-rise building. The protection device is composed of a protective layer and a steel wire rope, wherein the steel wire rope is connected to a steel wire rope suspension point on the protective layer; a top wheel and an edge-sealing rubber tape are arranged at the periphery of the protective layer; the edge-sealing rubber tape is used for filling a gap between the protective layer and the core tube inside the high-rise building; the edge-sealing rubber tape is in interference contact with the inner wall of the core tube inside the high-rise building; a turning plate capable of avoiding a core tube supporting piece inside the high-rise building is arranged on the protective layer; the turning plate andthe protective layer are connected by virtue of a hinge; a lifting and pulling point on the lower part of the steel wire rope can be selected on a coupling beam or a steel truss; a suspension point on the upper part of the steel wire rope is selected on the coupling beam or a tower crane bracket embedded plate. The protective structure disclosed by the invention is simple and firm in structure, easy to process and make and high in operating stability, constructors on the protective structure can be prevented from dropping, the horizontal structure below and the constructors on the plane can also be protected, and the protective structure is worthy of great popularization during construction of the core tube inside the high-rise building.

The invention discloses a natural gas safety storage device with a buffering function, and relates to the technical field of natural gas. A box is included. A base is arranged at the bottom end in thebox. A partition plate is arranged in the middle of the base. A buffering mechanism is arranged at the upper portion of the base and comprises a fixing block. The left end of the fixing block is fixedly connected with a transverse rod. The transverse rod is in cup joint with a spring. The end, away from the inner wall of the box, of the spring is fixedly connected with a pressing rod. The right end of the pressing rod is fixedly connected with a trapezoid sliding block. The trapezoid sliding block is movably connected with a trapezoid pressing plate through a second sliding groove. A supporting plate is fixedly connected to the upper end of the trapezoid pressing plate. A natural gas tank is arranged at the upper portion of the supporting plate. A supporting base is arranged on the innerside wall of the box. A buffering mechanism is also arranged at the upper portion of the supporting base. Through the arrangement of the buffering mechanisms on the lateral side and the base, the transverse and longitudinal multi-direction damping buffering effect is achieved, accordingly, it is guaranteed that the natural gas box is kept stable in the transportation process, large-range swingingis avoided, and safety of the storage device is greatly improved.

According to the technical scheme, the variable-spiral unequal-tooth-pitch end milling cutter is characterized in that the variable-spiral unequal-tooth-pitch end milling cutter comprises a cutter handle part and a milling cutter head, a plurality of milling blades are arranged on the milling cutter head and comprise four circumferential milling blades and four bottom milling blades, the circumferential milling blades on the cylindrical surface of the milling cutter are of a variable-spiral structure, and the bottom milling blades on the cylindrical surface of the milling cutter are of a variable-spiral structure. A variable-pitch structure is adopted between every two adjacent bottom milling blades, chip grooves are formed between the milling blades, and a plurality of rows of circular microtextures arranged in a fan shape are arranged on the end face of the end mill. A plurality of cooling channels are arranged in the milling cutter, the upper ends of the cooling channels are communicated with the liquid inlet hole, an outlet communicated with the cooling channels is arranged at the bottom of the milling cutter head, and a filter screen is fixedly arranged in the outlet. According to the invention, the vibration of the cutter in the milling process can be effectively reduced, the lubricating effect of the cooling liquid is enhanced, the friction between the cutter and a workpiece is reduced, the milling force in the machining process is reduced, granular impurities generated in the machining process are prevented from blocking the cooling holes, and the service life of the cutter is prolonged.

The invention discloses an efficient refining and processing system for Yellow Mountain mee tea.The efficient refining and processing system is in a mainly mechanical combination and accessorily manual stereoscopic semi-automatic production mode and comprises a first plane circular sieve machine, an upper-section tea production line, a middle-section tea production line and a lower-section tea production line.The first plane circular sieve machine is used for primarily circularly sieving primary tea, and the upper-section tea production line, the middle-section tea production line and the lower-section tea production line are butted to the first plane circular sieve machine.The upper-section tea production line, the middle-section tea production line and the lower-section tea production line are integrated into the same efficient refining and processing system for characteristics of the primary tea with different specifications, oversize tea is heated and re-fired and then is subjected to sieve shaking winnowing, and only fourth tea heads are cut and crushed and then are subjected to sieve shaking; undersize tea is subjected to sieve shaking, stem separation and winnowing sieving blank setting, and then are heated, re-fired and graded.The efficient refining and processing system has the advantages of high production efficiency, low broken tea rate, reasonable layout and small occupied space.Besides, the daily output of the efficient refining and processing system can reach 10 thousand kilograms by production practice, and accordingly the production efficiency can be greatly improved.

The invention provides a fireproof wooden door with mortise and tenon structures. The fireproof wooden door comprises a door leaf made of a fireproof plate, the door leaf comprises a door core plate,rails and stiles, the rails are connected with transverse edges of the door core plate, the stiles are connected with longitudinal edges of the door core plate, the rails and the stiles are connectedwith the door core plate through connecting plates, tenons or mortises are formed in the two ends of the connecting plates correspondingly, mortises or tenons matched with the tenons or mortises of the connecting plates are arranged on the rails, the stiles and the door core plate correspondingly, the rails / the stiles and the door core plate are connected with the two ends of the connecting platescorrespondingly through the mortise and tenon structures that the tenons are embedded into the mortises, and decorating strips are arranged on the connecting plates. The fireproof wooden door is easyand efficient in assembly and stable in structure; and matched customizing of different door core plates and the decoration strips, and reutilization of storage are facilitated.

The invention discloses a steel ball pickler. The steel ball pickler comprises two vertical rods arranged in parallel, wherein the upper ends of the two vertical rods are connected through a limitingrod; the limiting rod is slidably connected to a sliding seat; the sliding seat is in threaded connection with a screw; the screw is rotatably connected to the vertical rods; and one end of the screwpenetrates through the vertical rods and is connected to a motor output end arranged on the vertical rods. According to the steel ball pickler, the complete contact between a steel ball and acid liquid and deacidification liquid can be realized, the residual liquid can be dried, mixing of the residual liquid during station exchange is avoided, the concentration of the original liquid is changed and the treatment effect is reduced; the interior of a cleaning cylinder is divided into small compartments through baffles, and balls enter the compartment, so that when the cleaning cylinder rotates,the balls do not rotate together, the collision and friction between the balls can be reduced, and the damage probability is reduced.

The invention discloses a detection device for electrical automation equipment. The device comprises a device housing, a connecting line storage mechanism is arranged on the outer surface of the lowerend of the device housing, a connecting line fixing mechanism is arranged at the front end of the device housing, and a cleanable heat dissipation mechanism is arranged on the outer surface of one side of the device housing. The detection device of electrical automation equipment is provided with the cleanable heat dissipation mechanism, the connecting wire storage mechanism and the connecting wire fixing mechanism, so that after the device is used for a long time, dust accumulated on a heat dissipation opening is washed and brushed, and detection of the device is prevented from being influenced by accumulated dust at the heat dissipation opening of the device; the arranged connecting wire storage mechanism can reduce collision friction between a connecting wire and a storage box and prevent the connecting wire from being lost and damaged to influence inspection of the device; and the arranged connecting wire fixing mechanism can prevent the connecting wire from accidentally falling off during connection of the device and inspection of the device, so that stable connection of the device is facilitated.

The invention provides a fireproof door, comprising a door leaf and a door frame, one side of the door frame is connected with a wall, a groove corresponding to the periphery of the door leaf is formed in the other side of the door frame, and a first fireproof sealing strip is embedded in the face, connected with the wall, of the door frame; a second fireproof sealing strip and a third fireproof sealing strip are embedded in the groove; the first fireproof sealing strip is in a flat strip shape; the second fireproof sealing strip comprises a strip-shaped main body, one side of the main body horizontally extends to form a wide edge, one side, away from the main body, of the wide edge is obliquely bent to form an elastic folded edge, the main body of the second fireproof sealing strip on thedoor frame is embedded in the groove wall of the groove, the wide edge is attached to the surface of the door frame, and the elastic folded edge abuts against the door leaf. According to the fireproof door, through cooperation of the fireproof sealing strips of multiple structures, an installation gap can be blocked in time when a fire disaster occurs, fire penetration and poisonous smoke invasion of the installation gap are prevented, the anti-collision effect can be achieved, and the applicability of the fireproof door is improved.

The invention discloses a magnetism-gas mixed hybrid bearing and an installation method thereof, and aims to solve the technical problems of lower bearing capacity and dynamic rigidity of a magnetic bearing in the prior art and narrower application working condition of a magnetism-gas mixed bearing. The magnetism-gas mixed hybrid bearing is mounted on a rotating shaft, and comprises an inner magnetic pole sleeving the rotating shaft; the inner magnetic pole is arranged in an outer magnetic pole through a repulsion gap; a throttling hole penetrating in the radial direction is formed in the outer peripheral surface of the outer magnetic pole; the cross section of the inner peripheral surface of the outer magnetic pole is olive-shaped, or a dynamic-pressure generation groove is formed in theinner peripheral surface of the outer magnetic pole; the outer magnetic pole is matched and connected with a bearing tool; the bearing tool is provided with a gas supply hole whose one end is connected with the throttling hole; and the other end of the air supply hole is connected with an external gas source. The magnetism-gas mixed hybrid bearing synthesizes the advantages of a magnetic bearing,a static-pressure gas bearing and a dynamic-pressure gas bearing, achieves excellent stable-state and instant-state performances, and in addition, improves the adaptability to multi-directional load working conditions through application a spherical bearing.

The invention provides a centrifugal device for round ball sorting, and the centrifugal device is used for sorting ceramic balls to obtain round ceramic ball bodies. A connector socket can comprise atongue-shaped portion, and the tongue-shaped portion can be formed by using a printed circuit board. The centrifugal device comprises a sorting disc, a sorting body, a rotating shaft and a power device, wherein a round disc mouth of the sorting disc is upward, the lower bottom face of the sorting disc concaves downwards to form a hollow separation cavity, the sorting body is installed inside the separation cavity and is of a vertebral body structure, a busbar of the sorting body is a simple-leaf hyperbola, the rotating shaft is fixed to the lower bottom face of the sorting body, the central axis of the rotating shaft is collinear with that of the sorting disc, connection is established between the output end of the lower device and the rotating shaft, and the connection is established between the rotating shaft and the sorting disc through a speed reducing gear. The centrifugal device for the round ball sorting is simple in structure and good in sorting effect.

The invention provides a fireproof wooden door for multi-directional fireproofing. The fireproof wooden door for multi-directional fireproofing comprises a door leaf and a door frame, the door leaf ishinged to the door frame through a hinge, a door lock and a door mirror are arranged on the door leaf, and a clamping groove seat corresponding to the door lock is arranged on the door frame. The door lock is provided with a fireproof pad in a coated mode, and the inner side of the clamping groove seat is covered with the fireproof pad. The fireproof pad is arranged on the door mirror in a coatedmode, and the hinge is provided with the fireproof pad in a coated mode. A groove corresponding to the periphery of the door leaf is formed in the door frame, and a first fireproof sealing strip is arranged in the groove in an embedded mode; and the first fireproof sealing strip comprises a strip-shaped body, a broadside is arranged on one side of the body in a horizontal extension mode, an elastic folding edge is arranged on the side, away from the body, of the broadside in an oblique bending mode, and the elastic folding edge abuts against the door leaf. According to the fireproof wooden door for multi-directional fireproofing, accessories and installation gaps between the door leaf and the door frame are of fireproof structures, the fireproof performance of the wooden door is improved,and the effect of prolonging the fireproof duration of the fireproof door is achieved.

The invention discloses a high-efficiency refining processing method for Mount Huangshan Mee tea. The high-efficiency refining processing method for the Mount Huangshan Mee tea adopts a three-dimensional semi-automatic processing system which is mainly based on mechanical coupling and artificially supplemented. The three-dimensional semi-automatic processing system comprises a first plane-surface round sifter for carrying out first round sieving on primary tea; and the three-dimensional semi-automatic processing system further comprises an upper-stage tea production line, a mid-stage tea production line and a lower-stage tea production line which are relatively connected to the first plane-surface round sifter. The upper-stage tea production line, the mid-stage tea production line and the lower-stage tea production line are integrated in one processing system according to characteristics of the primary tea of different specifications in the high-efficiency refining processing method for the Mount Huangshan Mee tea. The tea on the sifter is heated so as to carry out second drying, and then, winnowed by shaking the sifter; split-rolling and further sifter-shaking are carried out on the head No. 4 only; sifter-shaking, stalk-picking and winnowing are performed on the sieved tea so as to screen fixed blanks; and heating, second drying and grading are carried out on the fixed blanks. The high-efficiency refining processing method for the Mount Huangshan Mee tea has the advantages of high production efficiency, low broken tea rate, rational arrangement and small floor area. Productive practices have proven that daily output of the Mount Huangshan Mee tea by adopting the system can be up to 10000 kilograms, so that the production efficiency is greatly improved.

The invention provides a fireproof and anti-collision sealing strip, comprising a strip-shaped main body made of a fireproof material, one side of the main body horizontally extends to form a wide edge, one side, away from the main body, of the wide edge is obliquely bent to form an elastic folded edge, the oblique direction of the elastic folded edge is opposite to the position of the main body,the included angle between the wide edge and the elastic folded edge is an acute angle, and the elastic folded edge is elastically bent; and a plurality of bulges are arranged on the left side and / orthe right side of the main body by taking the extending direction of the wide edge as the right side of the main body. According to the fireproof and anti-collision sealing strip, collision friction between door leaves and between a door leaf and a door frame can be reduced, the fireproof and anti-collision sealing strip can expand when a fire disaster occurs to seal gaps between the door leaves and between the door leaf and the door frame, fire penetration and poisonous smoke invasion of mounting gaps are prevented, and the fireproof and anti-collision effects are achieved.

The invention discloses a self-adjusting hydrogen cylinder device for a mobile hydrogen energy vehicle, the self-adjusting hydrogen cylinder device comprises: a base, a plurality of mobile self-adjusting devices, a motor and a control device, the motor and the control device are both connected with the base, and the mobile self-adjusting devices are arranged on the inner side of the base; the mobile self-adjusting device comprises limiting blocks, a supporting rod moving belt, two supporting rods, a bearing face and a pressure sensor, the supporting rod moving belt is located at the inner end of the base, the limiting blocks are arranged at the two ends of the supporting rod moving belt, one ends of the supporting rods are connected with the supporting rod moving belt, the other ends of the supporting rods are connected with the bearing face, and the pressure sensor is arranged in the middle of the bearing face. The bearing face surrounds the whole body of the hydrogen cylinder, collision friction of the hydrogen cylinder is reduced, the pressure sensor transmits the stress condition of the hydrogen cylinder to the control device through the supporting rods and the base, the control device controls the corresponding supporting rods to properly move on the supporting rod moving belt, and the stress condition of the hydrogen cylinder is adjusted so that the hydrogen cylinder can be evenly stressed.

The invention relates to a clamping device, in particular to an automatic clamping device of mechanical polishing equipment. The invention aims to solve the technical problem of providing the automatic clamping device of the mechanical polishing equipment, and the automatic clamping device is suitable for pulleys of different sizes, guarantees the machining precision and has the telescopic and sundry-preventing functions. According to the technical scheme, the automatic clamping device of the mechanical polishing equipment comprises a bottom plate, a supporting outer cylinder, a first support, a supporting circular truncated cone and the like; and the supporting outer cylinder is fixedly installed in the middle of the bottom plate, three strip-shaped grooves are evenly formed in the outer side wall of the supporting outer cylinder, cylindrical grooves are formed in the lower sides of the strip-shaped grooves, and round grooves are formed in the visible positions of the outer sides of the cylindrical grooves. A limiting assembly is additionally arranged in the device, when pulleys of different sizes are placed on the supporting circular truncated cone, the positions of baffles are adjusted through screws, it is guaranteed that the pulleys placed in the device are clamped all the time, and machining is more accurate.

The invention relates to a gas on-line monitoring device and a gas on-line monitoring device and method used for fiber grating gas-sensitive sensing. The gas on-line monitoring device comprises a fiber grating sensing element, a test tube, a fiber grating supporting stabilizer, a positioning tube, a sealing plug, a fiber grating demodulator and a computer processor. The fiber grating sensing element passes through the fiber grating supporting stabilizer, and is arranged in the test tube, and the fiber grating sensing element is sequentially connected with the fiber grating demodulator and thecomputer processor. The device has advantages of small volume, low cost, transparent appearance and good visibility, and can be used to effectively reduce the flutter of the fiber grating in the usingprocess on the premise of not influencing the axial strain of the fiber grating, obviously reduce the system error and increase the accuracy and the stability of the detection result.

The invention discloses a high-efficiency refining processing method for Mount Huangshan Mee tea. The high-efficiency refining processing method for the Mount Huangshan Mee tea adopts a three-dimensional semi-automatic processing system which is mainly based on mechanical coupling and artificially supplemented. The three-dimensional semi-automatic processing system comprises a first plane-surface round sifter for carrying out first round sieving on primary tea; and the three-dimensional semi-automatic processing system further comprises an upper-stage tea production line, a mid-stage tea production line and a lower-stage tea production line which are relatively connected to the first plane-surface round sifter. The upper-stage tea production line, the mid-stage tea production line and the lower-stage tea production line are integrated in one processing system according to characteristics of the primary tea of different specifications in the high-efficiency refining processing method for the Mount Huangshan Mee tea. The tea on the sifter is heated so as to carry out second drying, and then, winnowed by shaking the sifter; split-rolling and further sifter-shaking are carried out on the head No. 4 only; sifter-shaking, stalk-picking and winnowing are performed on the sieved tea so as to screen fixed blanks; and heating, second drying and grading are carried out on the fixed blanks. The high-efficiency refining processing method for the Mount Huangshan Mee tea has the advantages of high production efficiency, low broken tea rate, rational arrangement and small floor area. Productive practices have proven that daily output of the Mount Huangshan Mee tea by adopting the system can be up to 10000 kilograms, so that the production efficiency is greatly improved.

The invention discloses a double-stator magnetic-adjusting drive-control integrated collaborative robot motor. The robot motor aims at solving the technical problems that when an existing double-stator robot motor works, due to vibration, collision and extrusion between internal structures are frequent, and friction force is increased, so that parts are seriously abraded. The robot motor comprises a motor shell, a motor top cover arranged at the front end of the motor shell, an outer stator body arranged on the inner side of the motor shell, an inner stator body arranged on the inner side of the outer stator body and a rotor body arranged between the outer stator body and the inner stator body. According to the robot motor, the inner stator body and the rotor body play a role in flexible supporting through a circular gasket, meanwhile, the rotor body and the outer stator body play a role in flexible supporting through a supporting gasket, collision friction between structures is reduced, the rotor body adopts a light partition plate to reduce the weight of the rotor body, and structural inertia and collision damage are relieved.

The invention discloses a diagnostic equipment with an adjusting function for pediatric clinical treatment, the diagnostic equipment comprises a bottom plate, a storage box, an instrument storage box and a control panel, the storage box is fixed to the top end of the bottom plate, an adjusting mechanism is arranged on one side of the bottom end of a bed board, the adjusting mechanism comprises a stepping motor, a sliding rail, a sliding block, a threaded rod and transmission arms, the transmission arms are arranged on one side of the bottom end of the bed board, and a stepping motor is fixed to one side of the threaded rod. When the control panel controls the stepping motor to start the threaded rod to rotate, power is guided into the sliding block, the moving path of the sliding block is limited through the sliding rail, the sliding block can only horizontally move along the surface of the threaded rod, the sliding block horizontally moves to drive the transmission arms to turn upwards, one side of the bed board is jacked up to adjust the angle of the bed board, and the lying position of a child is adjusted. Therefore, the adjusting function of the equipment is achieved, and the practicability of the equipment is enhanced.

The invention relates to a calcium carbide feeding device for an acetylene generator, and belongs to the field of acetylene gas production equipment. The device comprises a metering bucket, an upper feeding valve, an upper storing bucket, a lower feeding valve, a lower storing bucket and a vibrating feeder, wherein the metering bucket, the upper feeding valve, the upper storing bucket, the lower feeding valve and the lower storing bucket are sequentially connected through flanges from top to bottom; the lower storing bucket is in flexible connection with a feeding opening of the vibrating feeder; a discharging opening of the vibrating feeder is flexibly connected to the feeding opening of the acetylene generator; a dust removing opening and an air sucker are arranged on the metering bucket; the dust removing opening is connected to an air inlet of the air sucker; a nitrogen charging pipe and an air exhausting pipe are correspondingly arranged on the upper storing bucket and the lower storing bucket; a powder filtering bag is arranged on the lower storing bucket; air outlets of the air exhausting pipe and the air sucker are correspondingly connected to the powder filtering bag through hoses. According to the device, the calcium carbide powder produced in the feeding process can be filtered and collected through the powder filtering bag and prevented from directly entering air toaccumulate to cause damage.

The invention belongs to the technical field of sensors and particularly relates to a heat-sensitive sensor. The heat-sensitive sensor comprises a shell with an X-shaped section, arc-shaped grooves used for fixing a cylindrical battery cell are formed in two sides of the shell, a first hole is formed in the shell, a sensor body is arranged in the first hole, an end, close to the bottom of the first hole, of the sensor body is fixedly connected with a probe through an elastic rod, a second hole communicated with the arc-shaped groove is formed in the position, corresponding to the probe, in thefirst hole, and the probe makes contact with a surface of the battery cell after being inserted into the second hole. The heat-sensitive sensor is advantaged in that the cross section of the shell isX-shaped, when the special support is used as a fixing support of the sensor, adjacent battery cells are effectively isolated and fixed, the occupied volume of the special support is reduced, meanwhile, the adjacent battery cells are isolated, a good heat dissipation gap is kept, collision friction between the adjacent battery cells is reduced, and the service life of the battery cells is furtherprolonged.

The invention discloses a multi-stage buffer type speed reducer which comprises a box body assembly. A top cover assembly is movably installed at the top end of the box body assembly, four rotating shafts are movably installed in the box body assembly, and multiple gears are movably installed on the surfaces of the rotating shafts. According to the multi-stage buffer type speed reducer provided by the invention, through the cooperation of a top cover vertical buckle and a top cover transverse buckle, when a top cover is disassembled, the top cover needs to be pushed towards one side through a top cover handle firstly, and then the top cover can be disassembled from the top end of a box body; and when the device is transported, the device can be kept in an inclined state through the cooperation of an inclined groove and the top cover handle, and then the top cover transverse buckle is buckled in an inner groove of the box body, so that the top cover is prevented from falling off from the surface of the box body to cause accidents.