114results about How to "Good cushioning effect" patented technology

The invention discloses a mobile terminal and a falling protection method thereof and belongs to the technical field of mobile communication. The mobile terminal comprises a display panel, a middle frame, a rear shell, a protection module and a detection module. The middle frame is mounted in the rear shell. The display panel is arranged on the middle frame. The protection module comprises a buffering popup block and a popup block control unit. The buffering popup block is mounted on the middle frame. The popup block control unit is used for controlling the buffering popup block to be popped up when the detection module detects falling of the mobile terminal. At the moment when the mobile terminal falls to the ground, the buffering popup block absorbs the impulse generated in the falling process of the mobile terminal, the instantaneous impact stress of the mobile terminal is reduced, so a module is protected, and a stress concentrated phenomenon is avoided. The buffering popup block is arranged on the middle frame, so the mobile terminal can be protected well, and the problems such as screen breakage and internal module damage resulting from the falling of the mobile terminal can be avoided.

A landing mechanism-based legged mechanical cushioning device comprises an upper end cover, a direct current lead screw motor, a disc spring, a damping baffle, a force sensor, an expansion ring, a piston push rod, a conical ring push rod, a cushioning cavity housing, a motor lead screw guide ring, a foam metal filling block filler, a flexible porous material, a bottom end cover and a pressure spring; and has two-stage cushioning energy absorption structures. The first stage is a mechanical cushioning structure designed on the basis of thin-wall metal pipe plastic deformation cushioning, and foam metal and flexible porous material plastic deformation energy absorption; and the second stage is an autonomous cushioning energy absorption structure designed on the basis of servo motor feedback control, foam metal plastic deformation energy absorption and elastic element energy storage and release. The inventive cushioning device is a composite cushioning device with simple structure, obvious energy absorption effects and stable performance.

The invention provides a Cr-Cr nanometer composite metal ceramic coating as well as a preparation method and device thereof. The coating is provided with a Cr diffusion layer, a Cr bonding layer, a Cr transition layer, a CrNx supporting layer, a Cr/CrN corrosion-resistant layer and a Cr decoration layer, wherein the CrNx supporting layer satisfies 0<=x<1; the Cr/CrN corrosion-resistant layer is an alternating layer of Cr layers and CrN layers and provided with at least one layer of Cr layer and one CrN layer. The coating provided by the invention has gradual changes of structure and composition, good interlayer bonding and excellent corrosion resistance and comprehensive properties.

The invention discloses a packaging method for a flat-panel displayer by adopting full paper wrappage. The packaging method comprises the steps that corrugated paperboard is folded into a three-dimension bottom underlay which is provided with a first square concave part and a first flange raised retaining plate, the bottom underlay is placed into a paper carton; then the display screen of the flat-panel displayer is embedded into the first concave part of the bottom underlay, another corrugated paperboard is folded into a three-dimension top underlay which is covered on the display screen, the base of the displayer is placed into the third concave part of the top underlay, and the random accessory fittings of the flat-panel displayer and manuals are placed into a package case and finally the package case is sealed. In the packaging method, the paper packaging materials are fully adopted with comparatively high supporting capacity and buffering effect and the packaging materials can be recyclable and degraded without damage and pollution to the environment. By adopting the method to package the flat-panel displayer, the space can be utilized to the greatest extent, the space occupied by the flat-panel displayer is reduced without the influence on the packaging security and the flat-panel displayer is convenient for storage and handling.

The invention relates to a buffer stop block structure and a corresponding package box body. The buffer stop block structure is arranged on a connecting corner of adjacent side surfaces of a main body of the corresponding box body, and the main body of the box body is used for placing a liquid crystal display panel. The buffer stop block structure comprises a fixing part, a connecting part and a box body buffer part. The buffer stop block structure and the corresponding box body have the advantages that the manufacture cost is low, the buffer fixing effect is good, and the technical problems that the manufacture cost of the existing package box is high, and the environment pollution is possibly caused are solved.

The invention discloses an anti-seismic and sound-absorbing electrical control cabinet, which comprises an outer shell and an inner shell. The bottom of the outer shell is provided with a base and an adjustment groove. The base is provided with a moving mechanism. Adjusting the threaded hole, a buffer mechanism is provided in the adjusting groove, and a pressing mechanism is provided in the adjusting threaded hole; the buffering mechanism includes a fixed column, a sliding column and a second spring, and a right-angle stop is provided on the sliding column. plate, the fixed column is provided with a clamping plate, and the fixed column is provided with a fixed nut; the pressing mechanism includes a pressing column and an elastic pad, and the pressing column is provided with a bolt, and the bolt is provided with a There are locking nuts; sound insulation cotton is arranged between the inner shell and the outer shell. The device adopts a double-layer cabinet, and the inner shell is buffered and protected by the buffer mechanism and the pressing mechanism between the outer shell and the inner shell. The buffer effect is good, the adaptability is strong, and the inner shell of different sizes can be installed. Adapt to different vibration environments.

The invention discloses a new type of automobile felting groove sealing strip, which is placed on the inner side of the door frame of a car door. The novel automobile woolening groove sealing strip is formed by composite co-extrusion of EPDM compact glue and EPDM sponge rubber. The new type of automobile woolening groove sealing strip is The part close to the door frame is the EPDM sponge glue, and the other parts are the EPDM compact glue. The new type of automobile woolen groove sealing strip of the present invention adopts a composite structure combining EPDM dense glue and EPDM sponge glue. The thicker EPDM sponge glue can quickly absorb the impact energy of glass rising and play a good buffering role. The original position can be quickly restored, the durability is enhanced, and only the extrusion process can be completed. The process implementation is relatively simple and reliable, and the cost is low.

The invention discloses a novel speed bump for municipal engineering. The novel speed bump comprises a base; one or more protruding blocks are arranged on the surface of the base; a groove is formed in each protruding block, and a spring is fixed to the bottom of each groove in an adhered mode; each spring is connected with a cover body; a damping block is installed between every two adjacent protruding blocks; a cavity is formed in each damping block, and water is injected into the cavities; the cavities are connected with a liquid conveying pipeline; and one or more circular holes are formed in the top surface of each damping block. The novel speed bump is simple in structure and applicable to being used in a highway, can have a good buffering effect on a car, is convenient to detach and maintain and has cooling and moisturizing effects on roads in hot summer.

The invention provides a liquid crystal display device and a manufacturing method thereof. The device comprises a first substrate, a second substrate, projections and spacers, wherein, the first substrate is provided with a plurality of spacers; the second substrate is provided with a plurality of projections; the projections correspond to and are contacted with parts of the spacers on the first substrate. The surface of the projection is a smooth buffer surface. The smooth buffer surface of the projection can effectively prevent the occurrence of push mura or touch mura.

The invention discloses mobile type power cable winding equipment which comprises a base, a supporting top plate, a first connecting assembly, a foundation, a first cleaning assembly, a second cleaning assembly and a winding roller. A left supporting stand column is fixedly installed on the upper surface of the left end of the base, a right supporting stand column is fixedly installed on the uppersurface of the right end of the base, the left supporting stand column is rotationally connected with a rotating rod in a bearing connecting manner, the foundation is fixedly installed on the surfaceof the inner side wall of the right supporting stand column in a bolt connecting manner, an elastic supporting leg is fixedly installed on the lower surface of the end of the base, a bearing plate isarranged at the bottom end of the elastic supporting leg, and castors are arranged at the bottom of the bearing plate. The mobile type power cable winding equipment is simple in structure, convenientto dismount, mount and maintain, high in winding efficiency, convenient to move and suitable for use and popularization.

The invention relates to a liquid tube towing, suspending and fixing device. The upside of the device is provided with a damper assembly connected with the lower part of the liquid tube fixing device; a complete set of the device is arranged under a cable towing and suspending device. The invention is suitable for automatic traction of hydraulic hoses and water pipes in various mine laneways to realize dynamic liquid and water supply; the cable towing and suspending device and a hydraulic tube suspending and fixing device are connected by a shock damper, so that the complete set of the conveying device realizes automatic and smooth conveying; hydraulic tube is fixed by adopting division arrangement, thereby avoiding relative movement and friction caused by the relative contact of hydraulic tubes in an operating state.

The invention relates to the technical field of medical devices and particularly discloses an antibiotic bottle cover automatic loading mechanism which comprises a loading rack (101) and a hopper (102) arranged at the upper part of the loading rack; the hopper is internally provided with a plurality of buffer plates (103) which are inclined downward in an intersecting manner; the upper end of thebuffer plates are arranged on the inner wall of the hopper; an interval is reserved between the lower end of each buffer plate and the inner wall of the hopper; the lower ends of the buffer plates onthe upper side point to the rest of the buffer plates on the lower side; a conical material hole (104) is formed in the bottom of the hopper; the loading rack is provided with a vibration motor (105);the vibration end of the vibration motor is provided with a vibration disc (106) inclined downward; the vibration disc is arranged below the conical material hole; the bottom surface in the vibrationdisc is of a wave structure in smooth transition; the loading bracket is provided with a supporting rod (107); a touch rod (108) is rotationally arranged at the end part of the supporting rod; and the supporting rod is provided with an inductor (109) corresponding to the touch rod. The antibiotic bottle cover automatic loading mechanism has the characteristics of capability of regulating output quantity and better conveying effect.

The invention discloses a drying device for cloth processing and belongs to the technical field of textile equipment. The drying device comprises a box body and a base; rollers are arranged on the base; supporting columns are arranged at the bottom end of the box body; the bottoms of the supporting columns are sleeved with spring sleeves; the spring sleeves are connected with the base; springs are arranged in the spring sleeves; a partition plate is arranged in the box body, and the interior of the box body is divided into a cloth scutching cavity and a cloth drying cavity through the partition plate; supports are arranged in the cloth scutching cavity; the supports are located above and below the cloth respectively; scutching and cleaning mechanisms used for scutching and cleaning the cloth are symmetrically installed on the corresponding supports; drying mechanisms are arranged in the cloth drying cavity, and the drying mechanisms are located above and below the cloth respectively; and each drying mechanism comprises a first supporting plate, a second supporting plate, a telescopic air cylinder and an infrared heating assembly. By arranging the scutching and cleaning mechanisms, scutching, cleaning, leveling and dewatering treatment can be conducted on the upper surface and the lower surface of cloth, and multiple times of treatment on the same position of the cloth can be achieved.

The invention relates to a device for packaging, transporting and fixing skylight glass. The device for packaging, transporting and fixing the skylight glass comprises a main body framework, wherein the main body framework is provided with a support buffer fixing mechanism and an isolation buffer positioning mechanism; the support buffer fixing mechanism comprises longitudinal buffer cushion blocks, fixing buffer block rods, rotary buffer block rods, profiling buffer racks and support cushions; the fixing buffer block rods and the rotary buffer block rods are used for fixing and buffering the front and back sides of the skylight glass; the profiling buffer racks are used for clamping the lower part of the skylight glass; the support cushions are used for buffering and supporting the bottom of the skylight glass; the isolation buffer positioning mechanism comprises compound buffer isolation blocks, stamping rotating arms and rotation shafts; the rotation shafts are connected to the front and back sides of the main body framework; the stamping rotating arms are connected to the rotation shafts; the stamping rotating arms are used for clamping the upper part of the skylight glass. Compared with the prior art, the device for packaging, transporting and fixing the skylight glass has the advantages that the device is reasonable in structure design, the buffer effect is good, the stable performance is good, the device is safe and reliable and can be directly put online, and the like.

The invention discloses a positioning device for electronic circuit board etching. The positioning device comprises upright posts, a pedestal, a drive motor and a rotating plate; a universal wheel isrespectively mounted at four corners of a bottom end of the pedestal; the upright posts are respectively disposed on two sides of a top end of the pedestal; a control panel is mounted at one side of an upright post; a single chip microcomputer is mounted in an interior of the control panel; a first support rod is disposed between top ends of two sides in the interior of each of the upright posts;a first slide rail is respectively disposed on two ends of each of the first support rods; a first cylinder is fixed by each of the first slide rail via a first slide block; a first hydraulic telescopic rod is disposed on a bottom end of each of the first cylinders; and an etching head is disposed on a bottom end of each of the first hydraulic telescopic rods. According to the positioning device,by arranging second support rods and second slide rails, after a circuit board is placed onto a workbench, by powering on the second slide rails, the second slide rails are powered on to generate a magnetic force; and the magnetic force drives the slide blocks to slide on the slide rails, so that a fixing plate can firmly fix the circuit board.

The invention relates to the technical field of variable-frequency motors, and especially relates to a variable-frequency motor with a damping effect. The variable-frequency motor comprises a variable-frequency motor body. A stabilizing part is fixedly welded to the bottom end of the variable-frequency motor body; a supporting bottom plate is arranged under the stabilizing part; and a buffer mechanism is arranged between the supporting bottom plate and the stabilizing part. The buffer mechanism comprises a square groove formed in the top surface of the supporting bottom plate, and a smooth round rod is fixedly arranged in the square groove. The smooth round rod and the sliding block are arranged, and the sliding block is indirectly connected with the variable-frequency motor, so that whenthe variable-frequency motor moves downwards, the sliding block can slide on the smooth round rod; a spring is arranged on the smooth round rod, so that when the sliding block moves, the spring is extruded, downward pressing movement of the variable frequency motor is buffered, and vibration of the variable-frequency motor is effectively restrained at the moment; and through the arrangement of a guide mechanism, the variable-frequency motor always moves in the vertical direction, and lateral deviation is avoided. The variable-frequency motor is obvious in buffering effect, high in practicability and suitable for popularization.

The invention discloses a helmet with an impact buffering function. The helmet comprises an inner helmet body and an outer helmet body, the outer helmet body is arranged on the outer side of the innerhelmet body, multiple brackets are arranged on the curved face of the top of the outer helmet body, rolling wheels are rotatably connected to the upper ends of the brackets and arranged in the same direction, clamping edges are fixedly connected to the edges of the lower sides of the outer helmet body, extension edges are fixedly connected to the edges of the lower sides of the inner helmet body,and limiting grooves are formed in the portions, on the outer wall of the inner helmet body, of the upper sides of the extension edges; a fixing frame is fixedly connected to the curved face of the top of the inner helmet body and fixedly connected with multiple elastic airbags which are filled with inert gas, multiple longitudinal damping mechanisms are fixedly connected between the clamping edges and the extension edges, and multiple transverse damping mechanisms are fixedly connected between the inner helmet body and the outer helmet body. The helmet with the impact buffering function is provided with a triple buffering structure, buffering springs can absorb impact energy, the elastic airbags can disperse an impact force, and a head protection pad avoids hard collision between the inner helmet body and the head, so that the helmet has an excellent buffering effect.

The invention discloses a plate-and-frame filter press convenient for discharging. The plate-and-frame filter press comprises a supporting beam A and a supporting beam B, a left supporting leg A and aleft supporting leg B are respectively mounted on the left sides of the lower ends of the supporting beam A and the supporting beam B; right supporting legs are mounted on the right sides of the lower ends of the supporting beam A and the supporting beam B; a connecting rod and a thrust plate are connected between the supporting beam A and the supporting beam B; the upper ends of the support beamA and the support beam B are slidably connected with a filter plate; a tightly pressing plate is arranged on the right side of the filter plate; the free end of a piston rod B of a hydraulic cylinderB mounted at the upper end of the connecting rod is connected with the right end of the tightly pressing plate; a discharging plate is arranged below the filter plate; the lower side of the right endof the left supporting leg A is connected with a supporting plate, the free end of a piston rod A of a hydraulic cylinder A arranged at the upper end of the supporting plate is hinged to the left side of the lower end of the discharging plate, the right side of the lower end of the discharging plate is connected with a supporting leg through a rotating shaft, and a conveying device is arranged below the left end of the discharging plate; a receiving box is arranged at the upper end of a conveying device. The plate-and-frame filter press has the advantages of being high in stability, small indischarging impact force and high in discharging efficiency.

The invention relates to a cushioning rebounding anti-sideslip device for a sole. The cushioning rebounding anti-sideslip device for the sole comprises a midsole and a cushioning body assembled on the midsole, the cushioning body is composed of multiple unit bodies which are sequentially connected and distributed in an U-shaped mode, each unit body is an elastic part which bends in an arc-shaped mode and is shaped like C, and an opening of each unit body faces backwards; each unit body bends to form a slotted hole which extends in the width direction of the sole; the flatness from outside to inside of the slotted holes, forming the sole of the cushioning body, of the unit bodies is gradually increased, and the top faces of the two ends of each unit body are arranged in a slantingly downward mode from outside to inside. According to the cushioning rebounding anti-sideslip device for the sole, by means of the structure modes of the unit bodies and the cushioning body, the good deformation capability is achieved, improvement of the cushioning effect of the sole is facilitated, and anti-slip and anti-rollover capability in the left side direction and the right side direction of the sole can be improved; the slantingly forward rebound force can be produced to the sole through the two ends of each unit body, the rebound rate of the force reaches 35%-52%, and the forward thrust power is provided for athletes.

The invention belongs to the technical field of bridge protection devices, and particularly relates to a multi-stage buffer anti-collision pier. The multi-stage buffer anti-collision pier comprises apier body and an anti-collision body surrounding the pier body; the anti-collision body comprises a first-stage protection cylinder, a second-stage protection cylinder and a third-stage protection cylinder, wherein the first-stage protection cylinder surrounding the pier body, and the first-stage protection cylinder comprises the outer cylinder body and the inner cylinder body which are sequentially arranged from outside to inside; the outer wall of the second-stage protection cylinder abuts against the inner wall of the inner cylinder body of the first-stage protection cylinder; and the outerwall of the third-stage protection cylinder abuts against the inner wall of the inner cylinder body of the first-stage protection cylinder, a guide mechanism is arranged on the outer wall of the third-stage protection cylinder, and after the first-stage protection cylinder is impacted, the guide mechanism can drive the first-stage protection cylinder to rotate, so that an impacted object deviates. After a vehicle collides with the anti-collision pier, the first-stage protection cylinder absorbs a small part of energy firstly, then the remaining energy is completely absorbed by the second-stage protection cylinder, or the second-stage protection cylinder absorbs a part of energy, the remaining energy is discharged by the third-stage protection cylinder, and through multi-stage energy absorption, it can be effectively guaranteed that the pier body is not damaged, and damage to the vehicle can be reduced.

The present invention provides a motor bearing structure and comprises a rotor and a ball bearing. The rotor is provided with a rotating shaft; the ball bearing is arranged in a hollow shaft tube; a buffering structure is arranged in the hollow shaft tube, and comprises a first magnet and a second magnet; the first magnet and the second magnet are arranged opposite to each other, and the opposite surfaces have the same polarity; one of the magnets is adjacently connected with the ball bearing; the rotating shaft passes through the first magnet, the second magnet and the ball bearing. Because the opposite surfaces of the first magnet and the second magnet have the same polarity, the two magnets can generate acting force to repel each other, thus the motor bearing structure has the buffering function in the force-bearing direction, which protects the ball bearing and simultaneously resets the ball bearing into the original position.

The invention relates to a full-automatic vanadium-nitrogen alloy discharging device. The full-automatic vanadium-nitrogen alloy discharging device comprises an electric control system, a base, a Z-axis moving mechanism, a Y-axis moving mechanism, a scattering mechanism and a turnover mechanism; the Z-axis moving mechanism, the Y-axis moving mechanism and the turnover mechanism are electrically connected with the electric control system and are controlled to act by the electric control system; the scattering mechanism comprises a scattering frame arranged on the Z-axis moving mechanism in a matching manner, a scattering air cylinder device arranged on the scattering frame, a guide rod assembly, a flange plate and a hammer rod; the scattering air cylinder device comprises a scattering cylinder body and a scattering piston rod; the guide rod assembly comprises a guide sleeve, a fixing sleeve and a guide rod; the flange plate is horizontally arranged at the bottom end of the guide rod; the hammer rod is vertically arranged at the bottom of the flange plate and the bottommost end of the hammer rod is of a conical tip structure. The full-automatic vanadium-nitrogen alloy discharging device is reasonable and compact in structural design, is high in discharging efficiency, can realize automatic scattering of vanadium-nitrogen alloy blocks, and is high in scattering efficiency and good in scattering effect, the labor intensity of workers and the dust harm on the workers can be effectively reduced, and the production efficiency is improved.

The invention discloses a removable solar emergency power supply, which comprises a power supply box body and a solar panel, wherein the power supply box body is provided with a power supply output port; the solar panel is used for collecting solar energy and is provided with a solar silicon wafer; the solar panel is separated from the power supply box body and is connected with the power supply box body through a power transmission line; an accommodating cavity for accommodating the solar panel is also formed in the power supply box body; a cover board is arranged outside the accommodating cavity; a rotatable panel is arranged on the side surface of the power supply box body; a first mirror surface is arranged at the inner side of the panel; and a second mirror surface is arranged at the position, corresponding to the panel, on the side surface. The removable solar emergency power supply has the beneficial effects that (1) the solar panel is separated from the power supply box body, so that proper angle and position can be conveniently selected to place the solar panel; (2) the mirror surfaces are arranged, so that the efficiency of collecting the solar energy by the solar panel can be improved through light reflection; (3) the solar panel has a good buffering effect when accommodated into the power supply box body and the solar panel is prevented from being damaged; and (4) the power supply box body is convenient to move.

The invention relates to an impact-resistant buffer protection plate structure, comprising a supporting plate, and a buffer plate structure fixedly connected with the supporting plate. The buffer plate structure comprises a first buffer plate and two second buffer plates whose ends are fixedly connected integrally, the first buffer plate and the second buffer plates being in an arch structure. The end of the second buffer plate is fixedly connected with the supporting plate. The middle part of the arch convex surface of the first buffer plate is fixedly connected with the supporting plate. Springs are fixedly connected between the two ends of the first buffer plate and the supporting plate. The impact-resistant buffer protection plate is simple in structure. Through arranging the double-layer buffer plate on the supporting plate, the protection plate has good buffer effect, and connection strength and anticollision capability of the buffer plates are improved. The springs are arranged to further improve buffer performance.

The invention discloses a buffering roller device, and the buffering roller device comprises a roller frame, a U-shaped slot, a support frame and an elastic device, wherein the U-shaped slot is fixed to the lower end of the roller frame; the elastic device is arranged in the U-shaped slot and connected with the roller frame through the support frame. The buffering roller device not only has excellent buffering effect but also it has low cost and long service life, and is convenient to use.

The invention discloses a standing column lifting mechanism for a building spraying manipulator. The standing column lifting mechanism comprises a pedestal and a standing column. A buffer mechanism isarranged inside the pedestal and includes a main buffer spring, turning rings, an auxiliary spring and a turning block. The main buffer spring is installed inside the pedestal. The lower end of the standing column is installed inside the pedestal and is fixedly connected with the upper end of the main buffer spring. The auxiliary spring is fixedly mounted on the inner side surface of the pedestal. The turning block is fixedly installed at one end of the auxiliary spring; and the turning rings are installed at the two sides of the turning block. A rack is fixedly connected to the surface of one side of the standing column. On the basis of the designed buffer mechanism, when the standing column is used and lifting is carried out, buffering is carried out by using the main buffer spring of the buffering mechanism; the turning rings squeeze the turning block to change the longitudinal force into the horizontal force and auxiliary buffering is carried out by using the auxiliary spring, sothat the buffering effect of the buffering mechanism is improved; and a phenomenon that the standing column is damaged after long-time usage is prevented.

The invention discloses a pneumatic circuit for a pneumatic door switch of a numerically controlled lathe, including an exhaust circuit. The exhaust circuit is provided with a high-speed, high-load pneumatic buffer circuit. The high-speed, high-load pneumatic buffer circuit includes a single-rod double-acting cylinder, a pressure-reducing valve , pressure reducing valve 2, speed regulating valve 1, speed regulating valve 2, solenoid valve 1, solenoid valve 2, solenoid valve 3, the gas source is connected to the solenoid valve 3 through the pipeline and the pressure reducing valve 1 on the pipeline, and the solenoid valve 3 is connected to the solenoid valve 3. Solenoid valve 1 is connected, solenoid valve 3 is connected with solenoid valve 2, speed regulating valve 1 is connected with the piston end cavity of the single-rod double-acting cylinder, speed-regulating valve 1 is connected with solenoid valve 1, speed-regulating valve 2 is connected with single-rod double-acting cylinder The connecting rod end cavity of the cylinder is connected, the speed regulating valve 2 is connected with the solenoid valve 2, the pressure reducing valve 2 is connected with the solenoid valve 1 and the solenoid valve 2, and the pressure reducing valve 1 and the pressure reducing valve 2 are connected with the exhaust circuit; the present invention The cushioning effect is good, reducing the impact of the sliding door, avoiding the loosening of the cylinder and sliding door guide rail screws to ensure safety and the service life of the cylinder.

The invention provides a supporting structure and a lifting desk. The supporting structure comprises a first supporting assembly, a second supporting assembly and a connecting plate component, wherein the first supporting assembly and the second supporting assembly form an X shape, and a tension action is formed at the position of a central joint between the first supporting assembly and the second supporting assembly through an elastic component; the upper end of the first supporting assembly is articulated to one end of the connecting plate assembly, and the upper end of the second supporting assembly is connected to the other end of the connecting plate assembly through a horizontal driving piece in a sliding manner; and therefore, deploying and retracting actions of the connecting plate assembly are driven. After the lifting desk adopts the supporting structure provided by the invention, the deploying and retracting are more free, the floor area is small, and the materials are saved.

The invention relates to a groove buffer of a hydraulic cylinder. The groove buffer of the hydraulic cylinder comprises a hydraulic cylinder, a piston and a cylinder cover fixedly connected to the hydraulic cylinder, the piston is fixedly connected to a plunger, wherein the cylinder cover comprises a cylindrical cavity and a throttle orifice, the throttle orifice is communicated with the cavity, the piston is fixedly connected to a cylindrical buffer block; the outside diameter of the cylindrical buffer block is slightly smaller than the inside diameter of the cavity; the outer wall of the buffer block comprises an arc groove of which the cross section is triangular, and the depth of the groove is gradually increased towards the end part of the buffer block. Compared with the traditional throttle buffer of the hydraulic cylinder, the groove buffer of the hydraulic cylinder, disclosed by the invention, adopts the groove with an arc triangular cross section to buffer, and has the advantages of simple structure, good buffer effect, small hydraulic impact and stable running.

The invention discloses a goods packing device and packing method for low-altitude air drop, belongs to the field of low-altitude air drop of goods, and solves the problem of goods damage caused by landing impact force of direct air drop to the ground to a greater extent. The device comprises L-shaped damping protective angles made of nitrile rubber materials, a compressed air box, flexible PVC spheres, disposable rubber rings and an air extracting device; the L-shaped damping protective angles are bonded at eight corners of a rectangular goods packing box through gum, adapt to the corners ofthe rectangular goods packing box in shape, and are formed by vertically connecting edges of three L-shaped nitrile rubber materials; and the compressed air box is fully filled with compressed air with a certain pressure, and is provided with air inlet holes and air outlet holes in two opposite surfaces to greatly reduce the damage to goods by the landing impact force.