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34results about How to "Protection against fall hazards" patented technology

Hydraulic lift truck for carrying armoring movable-type switch cabinet functional vehicles

Disclosed is a hydraulic lift truck for carrying armoring movable-type switch cabinet functional vehicles. The problems that in the prior art, only the lifting height can be adjusted, the width cannot be adjusted, and a functional vehicle cannot be automatically locked on a hydraulic lift truck are solved. The hydraulic lift truck is characterized in that a nut is welded to a right vertical groove plate of a right lifting forked plate, lead screw fixing sleeves are fixed to a middle vertical plate and a right side plate of a lifting frame, lead screws are installed in shaft holes of the lead screw fixing sleeves, locking openings are correspondingly machined in a left guide rail plate on a left lifting forked plate and a right guide rail plate on the right lifting forked plate, hooked plates are arranged on the two sides of a guide rail of the hydraulic lift truck, and a slope is arranged on a front-end forked plate of the hydraulic lift truck. The hydraulic lift truck has the advantages that the height and the width of the lifting frame of the hydraulic lift truck can be adjusted, the requirement for lifting and transporting the functional vehicles with different cabinet widths through the same hydraulic lift truck is met, the functional vehicles can be automatically, safely and conveniently locked on the hydraulic lift truck, the functional vehicles can freely move onto the hydraulic lift truck, transportation is convenient, and time and labor are saved.
Owner:沈阳华利能源设备制造有限公司

Lifting system for construction

The invention relates to a template hoisting system for a building. The template hoisting system provided by the invention comprises a top layer platform, a middle layer platform and a bottom layer platform which are sequentially arranged from top to bottom and are mutually parallel, wherein a wall template capable of horizontally sliding along the top layer platform is hung at the bottom of the top layer platform; a tubular upright post perpendicular to the top layer platform and the middle layer platform is fixed between the top layer platform and the middle layer platform; the two ends of steel beams for supporting the tubular upright post of the middle layer platform and the bottom layer platform can be fixed on the walls at two sides; more than three hydraulic hoisting systems are arranged by aiming at the top layer platform, the middle layer platform and the bottom layer platform of each unit; and each hydraulic hoisting system comprises a hoisting upright post, an upper hoisting box, a lower hoisting box and a pair of hydraulic cylinders which are connected between the upper hoisting box and the lower hoisting box. The template hoisting system for the building provided by the invention can be used for realizing that the platforms can be effectively hoisted by the height of a storey, thereby realizing the upward construction of core cylinder walls and other walls layer by layer; the safe reliability is high; and the falling phenomenon can be avoided.
Owner:GUANGZHOU CONSTR ENG +2

Anti-drop device capable of embracing pole during power outage, for pole-climbing robot

The invention discloses an anti-drop device capable of embracing a pole during power outage, for a pole-climbing robot. The anti-drop device comprises two electromagnetic circuits, two telescopic poles, two compression springs, two pole embracing arms and two armatures, wherein the two electromagnetic circuits are symmetrically mounted in a hexahedral frame; each electromagnetic circuit is an electromagnet wound with a coil in a plurality of turns, and the coils and motors adopt the same power supply; one end of each telescopic pole is connected to the inner lateral side of a position at which the corresponding electromagnet is mounted, on the hexahedral frame, and the other end of the telescopic pole is connected with one pole embracing arm; each compression spring is arranged at the outer part of the corresponding telescopic rod in a sleeving manner; each armature is mounted at a position corresponding to the electromagnet, on the corresponding pole embracing arm. The anti-drop device capable of embracing the pole during power outage, for the pole-climbing robot, provided by the invention, is mounted on the conventional pole-climbing robot and can prevent the aloft pole-climbing robot from dropping due to accidental power outage when the robot climbs along the pole, so that the anti-drop device is good in safety; the anti-drop device has the advantages of being reasonable in structural design, simple and convenient to use, low in cost, and the like.
Owner:CIVIL AVIATION UNIV OF CHINA

System and method for filling floor holes of elevator landing

The invention discloses a hole filling system for an elevator landing floor, which is used for an elevator with at most three floors. The elevator includes an elevator control system, a car, a hole on the second floor and a hole on the third floor. The car bottom cover plate, the second floor cover plate and the third floor cover plate matched with the first floor hole and the third floor hole, the bottom of the car is locked and fixed by the first normally closed electromagnetic opening and locking device, and the second floor hole Lock and fix the cover plate on the second floor through the second normally closed electromagnetic opening and locking device, and lock and fix the cover plate on the third floor through the third normally closed electromagnetic opening and locking device in the hole on the third floor; the elevator control system is respectively connected with the first normally closed type electromagnetic opening and locking device, the second normally closed electromagnetic opening and locking device and the third normally closed electromagnetic opening and locking device are electrically controlled and connected. The present invention effectively fills the floor hole in the projected area of ​​the car after the car leaves the landing, prevents the danger of people falling from the floor hole, and protects the safety of surrounding people.
Owner:SHANGHAI SHENGDISI AUTOMATION EQUIP

Driving main machine of electric lifting type clothes hanger

The invention discloses a driving main machine of an electric lifting type clothes hanger. The main machine comprises a machine box, two symmetrically arranged wire winding wheels are arranged in themachine box, each wire winding wheel is provided with a worm wheel positioned at one end of the wire winding wheel, a lifting traction wire is wound on each wire winding wheel, a driving motor is arranged on the machine box, a worm located between the two worm wheels is connected to a power shaft of the driving motor, the worm meshes with the two worm wheels, the driving motor is electrically connected with an electric control mechanism, and the electric control mechanism is connected with a acquisition unit for acquiring signals of the number of rotation turns of the worm and / or signals of the number of rotation turns of the winding wheel. The power shaft of the driving motor and the wire winding wheel are in a linkage relation, rotate synchronously and are directly associated with the driving motor, so that signals acquired by the signal acquisition unit can be fed back to the electric control mechanism in real time, the electric control mechanism can control the driving motor timelyand quickly, and aging hysteresis does not exist.
Owner:黄山易森机电科技有限公司

Children' lifting chair

The invention discloses a children's lift chair. It takes supporting stand of 'V' shape as leg, a chair seat and back support equipped on adult' seat are installed between legs; the top of leg is equipped with a handrail connected with back support, the handrail extends to back of back support, and the back of it is equipped with a locking device locked in the adult's back support; said chair seat is equipped with an air-powered sponge lift device, which is connected with lift board on bottom of chair seat; the front of said left handrail is equipped with rail movably, the rail can be connected to the front of right rail, the middle part of rail is pressured to top of said sponge lift device; said right handrail is equipped with a switch for said air-powdered sponge lift device. The designation can effectively ensure the children's safety, and for preschool children, it can help them maintain a right sitting posture by supporting chest with rail.
Owner:杨浩良

Straight jacking type freight lifting platform

The invention discloses a straight jacking type freight lifting platform and relates to the technical field of freight lifting devices. The straight jacking type freight lifting platform comprises a frame body, a hydraulic cylinder arranged on the lower portion of the frame body and a freight lifting platform body dragged by a steel wire rope pulley winding set driven by the hydraulic cylinder. A push rod driven by a fall-preventing cylinder is arranged on the upper portion of the frame body. The push rod transversely extends out at working time. Compared with the prior art, the straight jacking type freight lifting platform overcomes the defect of rebounded height, caused by hydraulic compression, of the platform body, and is increased in safety performance and reliability.
Owner:广西鑫深科技有限公司

Hybrid psc girder having reverse t-shaped cross section and method for constructing slab using same

One aspect of the present invention presents a hybrid PSC girder having a reverse T-shaped cross section, the girder comprising: a lower flange; a web which is vertically formed upward from the widthwise central part of the lower flange and includes, at an upper part, a plurality of coupling holes formed therethrough or formed in a predetermined depth at an uniform interval in the longitudinal direction; a central body part having a reverse T-shaped cross section, which comprises reinforcing partition walls protruding from both sides of the web in a predetermined thickness to resist out-of-plane deformation; end partition walls formed at both lengthwise ends of the central body part in a predetermined length and having a box-type cross section; and reinforcing beams made of steel, having apredetermined length, and coupled in the lengthwise direction to opposite side surfaces of the upper part of the web between the reinforcing partition walls and the end partition walls by using coupling fasteners inserted into the coupling holes.
Owner:(株)知胜建设咨询公司 +1

Single-guiderail double-falling prevention lift car elevator

The invention discloses a single-guiderail double-falling prevention lift car elevator which comprises two vertical beams disposed on two opposite sides of an elevator car, wherein each vertical beam has a slide rail form and is sleeved by a constantly fixed assembly and a constantly movable assembly, the constantly movable assembly is connected to a control device of the elevator car by a sliding motor, and the constantly movable assembly is disposed on the bottom of the elevator car and gets contacted with the elevator car by an extensible strut; a displacement sensor is also disposed at a joint between the extensible strut and the elevator car; and the constantly fixed assembly is disposed on the bottom of stairs of a building and comprises an emergency control device, an emergency motor and a sliding frame body, and the displacement sensor is electrically connected to the emergency control device of the constantly fixed assembly. The single-guiderail double-falling prevention lift car elevator disclosed by the invention has the advantages that the lift car elevator can make an emergency response more quickly when the elevator slides down; and an anti-falling device can be started in time to support the elevator car, so that safety performance of the lift car elevator can be enhanced.
Owner:JIANGSU CHUANGLI ELEVATOR PARTS

Tensioning flexible guide rail type domestic simple elevator

The invention discloses a tensioning flexible guide rail type domestic simple elevator comprising a lift car, a lifting traction mechanism and a power source; two sides of the lift car are connected with the lifting traction mechanism by a guide rail and a guide roller; a pulley at the top end of the lifting traction mechanism is fixedly arranged on the outer eave of a roof by a supporting beam; hoisting equipment of the lifting traction mechanism is fixedly arranged by virtue of a load bearing wall; a driving motor in the hoisting equipment is electrically connected with the power source; the lift car is internally provided with a control switch for controlling the operation of the driving motor; and the guide rail adopts a flexible guide rail. The simple elevator disclosed by the invention is mounted on a balcony or a windowsill and occupies no public spaces or an extremely small public space; due to the adoption of the flexible guide rail, not only can the rigidity requirement be met under the action of a tension, but also the elevator can be shrunk to be stored when not being used; due to the arrangement of a rope breaking protection device, a protecting effect can be achieved, so that the risk that the elevator falls down is avoided; and the simple elevator has the characteristics of space saving, convenience in mounting and operation as well as safety and reliability.
Owner:上海同演建筑科技有限公司 +2

Safety device of electric iron rolling door

The invention discloses a safety device of an electric iron rolling door, comprising a casing, a base and at least one clamping block, wherein an accommodation space is formed in the casing; the inner surface of the casing is provided with at least one stopping part convex inwards in radial direction; the base is provided with a shaft part and is pivoted in the casing; teeth are arranged in the shaft part for being matched with a shaft lever of a rolling bar, so that the base can synchronously rotate with the rolling bar; the outer surface of the shaft part of the base is provided with at least one limiting part extending towards in radial time; one end of the clamping block is pivoted on the limiting part of the base and is tightened on the shaft part of the base through an elastic piece; once a chain between the rolling bar and the rolling door machine is broken due to the wear, the safety device connected to the shaft lever of the roller bar can generate the action to stop the rolling bar, prevent a rolling door sheet from quickly falling off to cause an accident, thereby ensuring the safety of life and property.
Owner:GOLDEN MOUNTAIN MACHINERY

Elevator landing floor hole filling system and method thereof

The invention provides an elevator landing floor hole filling system and method thereof for an elevator for at most three floors. The elevator comprises an elevator control system, a car, a second-floor hole and a third-floor hole. The elevator is characterized by further comprising a car bottom cover plate, a second-floor cover plate and a third-floor cover plate cooperating with the second-floorhole and the third-floor hole in appearance; the car bottom cover plate is locked and fixed through a first normally closed electromagnetic opening and locking device at the bottom of the car; the second-floor cover plate is locked through a second normally closed electromagnetic opening and locking device in the second-floor hole; the third-floor cover plate is locked and fixed through a third normally closed electromagnetic opening and locking device in the third-floor hole; and the elevator control system is in electric control connection with the first normally closed electromagnetic opening and locking device, the second normally closed electromagnetic opening and locking device and the third normally closed electromagnetic opening and locking device. After the car leaves from a landing, the floor holes in the car projection area are effectively filled, so that the danger of persons falling from the floor holes is prevented, and the safety of surrounding persons is protected.
Owner:SHANGHAI SHENGDISI AUTOMATION EQUIP

Elevator landing floorslab hole filling system

The invention provides an elevator landing floorslab hole filling system used for an elevator for two floors. The elevator comprises an elevator car, a guide rail, a second-floor hole and a control system; the elevator landing floorslab hole filling system comprises a second-floor cover plate and an elevator car bottom cover plate; the second-floor cover plate is connected with the guide rail in asliding manner and comprises an upper cover plate and a lower cover plate; the size of the upper cover plate is greater than that of the second-floor hole; the lower cover plate is connected with thelower side of the upper cover plate; the elevator car bottom cover plate is elastically connected with the lower part of the elevator car; the size of the elevator car bottom cover plate is greater than that of the second-floor hole; a top detection device is arranged at the top of the elevator car; a bottom detection device is arranged at the bottom of the elevator car; and the output end of thetop detection device and the output end of the bottom detection device are connected with the control system. The elevator landing floorslab hole filling system can effectively fill the second-floorhole of the hoistway-free elevator, so that people are prevented from falling from a floorslab hole, and the elevator landing floorslab hole filling system is simple in structure and low in cost, andalso has the advantages of reaction reliability and sensitivity.
Owner:SHANGHAI SHENGDISI AUTOMATION EQUIP

Fast Response Cab Elevator

The invention discloses a rapid response car elevator including two vertical beams that are arranged at the opposite two sides of an elevator car, each vertical beam is in a slide rail manner and is sleeved by a normally fixed component and a normally movable component, wherein the normally movable component is connected with a control device of the elevator car, the normally movable component is arranged at the bottom of the elevator car and is in contact with the elevator car through a telescoping support rod, the normally fixed component is arranged at the bottom of the building stair, and a displacement sensor is electrically connected with the emergency control device of the normally fixed component. The car elevator can timely give a prompt when the elevator is in danger to help people to stabilize the mood and to have a clear sense of help, and thereby further improving the help probability of people when the elevator drops and ultimately improving the escape probability. The trapped people starts an emergency starting button to make the normally fixed components automatically run to the elevator car position, so that the elevator car can be clamped, and the self rescue can be realized.
Owner:JIANGSU CHUANGLI ELEVATOR PARTS

A system for filling holes in floor slabs of elevator landings

The invention provides an elevator landing floorslab hole filling system used for an elevator for two floors. The elevator comprises an elevator car, a guide rail, a second-floor hole and a control system; the elevator landing floorslab hole filling system comprises a second-floor cover plate and an elevator car bottom cover plate; the second-floor cover plate is connected with the guide rail in asliding manner and comprises an upper cover plate and a lower cover plate; the size of the upper cover plate is greater than that of the second-floor hole; the lower cover plate is connected with thelower side of the upper cover plate; the elevator car bottom cover plate is elastically connected with the lower part of the elevator car; the size of the elevator car bottom cover plate is greater than that of the second-floor hole; a top detection device is arranged at the top of the elevator car; a bottom detection device is arranged at the bottom of the elevator car; and the output end of thetop detection device and the output end of the bottom detection device are connected with the control system. The elevator landing floorslab hole filling system can effectively fill the second-floorhole of the hoistway-free elevator, so that people are prevented from falling from a floorslab hole, and the elevator landing floorslab hole filling system is simple in structure and low in cost, andalso has the advantages of reaction reliability and sensitivity.
Owner:SHANGHAI SHENGDISI AUTOMATION EQUIP

Safety protection device for building construction and operation method

The invention relates to the technical field of building construction, and discloses a safety protection device for building construction and an operation method. A fixing structure comprises a fixing shell, a threaded rod, a first sleeve, a first fixing rod, a second fixing rod, a first gear, a second gear, a second sleeve, a first limiting plate, a first fixing plate, limiting rods, a third sleeve, a limiting ring, a transmission rod, a third gear, a fourth sleeve, a rotating handle, a fourth gear, a lantern ring, a sliding block and a connecting rod. The limiting rods are fixedly connected to the two ends of the inner side of the fixing shell, the first fixing plate is movably connected to one sides of the limiting rods, the second sleeve is fixedly connected to one side of the first fixing plate, and one end of the second sleeve is movably sleeved with the threaded rod. A frame can be fixed, then the frame can be fixed more conveniently, a worker does not need to enter an elevator shaft to lay a protection platform, and therefore the danger that the worker falls is prevented.
Owner:CHINA MCC17 GRP

Decoration device capable of automatically pasting wallpaper

The invention discloses a decoration device capable of automatically pasting wallpaper. The device comprises a box body. A power synchronization chamber is formed in the box body, a power bevel gear chamber is formed in the upper side of the power synchronization chamber, a pressing chamber with a backward opening is formed in the rear side of the power bevel gear chamber, a power shaft penetrating through the power synchronization chamber is rotationally arranged on the lower end wall of the power bevel gear chamber, a moving box abuts against the upper end face of the box body, a wallpaper chamber with an upward opening is formed in the moving box, and a bevel gear chamber which is symmetrical about the axis of the power shaft in the left-right direction is formed in the lower side of the wallpaper chamber. According to the decoration device capable of automatically pasting the wallpaper, because the wallpaper is automatically pasted, the phenomenon that workers fall off when in tearing hurry while installing the wallpaper can be effectively avoided, and some walls which are too tall do not need manual wallpaper pasting, less risks exist in the installation process of the wallpaper, and the working efficiency of pasting the wallpaper is improved.
Owner:武汉康圣金水晶工艺品有限公司

Children' lifting chair

The invention discloses a children's lift chair. It takes supporting stand of 'V' shape as leg, a chair seat and back support equipped on adult' seat are installed between legs; the top of leg is equipped with a handrail connected with back support, the handrail extends to back of back support, and the back of it is equipped with a locking device locked in the adult's back support; said chair seat is equipped with an air-powered sponge lift device, which is connected with lift board on bottom of chair seat; the front of said left handrail is equipped with rail movably, the rail can be connected to the front of right rail, the middle part of rail is pressured to top of said sponge lift device; said right handrail is equipped with a switch for said air-powdered sponge lift device. The designation can effectively ensure the children's safety, and for preschool children, it can help them maintain a right sitting posture by supporting chest with rail.
Owner:杨浩良

Assisting equipment convenient to breast milk feeding for obstetrics and gynecological nursing and use method

The invention discloses assisting equipment convenient to breast milk feeding for obstetrics and gynecological nursing and a use method. The equipment comprises: a bottom plate provided with a plurality of universal wheels; a supporting column which is vertically fixed to the upper end face of the bottom plate, wherein a first supporting ring is fixed to the lower end of the surface of the supporting column, and a second supporting ring is fixed to the upper end of the surface of the supporting column; and a lifting assembly which is arranged on one side of the supporting column, wherein the lifting assembly is used for lifting an infant, and a protection assembly is arranged above the lifting assembly. According to the equipment, a baby can be placed in an arc-shaped tray to be lifted, a mother only needs to lift the head of the baby for breast feeding, the previous embracing type feeding mode is changed, and the feeding mode of the mother is reduced; a hydraulic rod can push a supporting transverse rod to move in a lifting mode, and the arc-shaped tray can transversely rotate through a first lantern ring and a second lantern ring; and the arc-shaped tray can slide in a sliding groove through a T-shaped sliding rod, so that the arc-shaped tray can drive the baby to flexibly move, and the baby can be conveniently in contact with nipples for feeding.
Owner:成志芳

Rapid response car elevator

The invention discloses a rapid response car elevator including two vertical beams that are arranged at the opposite two sides of an elevator car, each vertical beam is in a slide rail manner and is sleeved by a normally fixed component and a normally movable component, wherein the normally movable component is connected with a control device of the elevator car, the normally movable component is arranged at the bottom of the elevator car and is in contact with the elevator car through a telescoping support rod, the normally fixed component is arranged at the bottom of the building stair, and a displacement sensor is electrically connected with the emergency control device of the normally fixed component. The car elevator can timely give a prompt when the elevator is in danger to help people to stabilize the mood and to have a clear sense of help, and thereby further improving the help probability of people when the elevator drops and ultimately improving the escape probability. The trapped people starts an emergency starting button to make the normally fixed components automatically run to the elevator car position, so that the elevator car can be clamped, and the self rescue can be realized.
Owner:JIANGSU CHUANGLI ELEVATOR PARTS

Marine elevator assembly

The invention discloses a marine elevator assembly which comprises a push-pull cage door, a movable base, an overhaul platform, a roof punching buffer device and a landing door safety control device.Combination deviation generated by a fixed base is avoided, and a protection device is additionally arranged at the top of the roof punching buffer device when a marine elevator runs, so that a transmission mechanism on a standard knot guide rail is prevented from stopping derailing under the condition that other safety devices fail to carry out roof punching. The landing door safety control device has the advantages of being capable of achieving electric interlocking between the marine elevator and a landing door, preventing people or objects from falling from a high position and the like, facilitates marine intelligent structure construction and is convenient to popularize and use. The push-pull cage door is reasonable and simple in structural arrangement, convenient to use and operate,convenient to push and pull, not prone to blockage and high in practicability. The risk that the body of maintenance personnel of the maintenance platform is stressed unstably when the maintenance personnel stand and work at high altitude is avoided, the maintenance personnel can check the working conveniently, and the safety guarantee of the personnel is provided.
Owner:南通东之杰智能装备有限公司

A power-off pole-holding anti-fall device for a pole-climbing robot

The invention discloses an anti-drop device capable of embracing a pole during power outage, for a pole-climbing robot. The anti-drop device comprises two electromagnetic circuits, two telescopic poles, two compression springs, two pole embracing arms and two armatures, wherein the two electromagnetic circuits are symmetrically mounted in a hexahedral frame; each electromagnetic circuit is an electromagnet wound with a coil in a plurality of turns, and the coils and motors adopt the same power supply; one end of each telescopic pole is connected to the inner lateral side of a position at which the corresponding electromagnet is mounted, on the hexahedral frame, and the other end of the telescopic pole is connected with one pole embracing arm; each compression spring is arranged at the outer part of the corresponding telescopic rod in a sleeving manner; each armature is mounted at a position corresponding to the electromagnet, on the corresponding pole embracing arm. The anti-drop device capable of embracing the pole during power outage, for the pole-climbing robot, provided by the invention, is mounted on the conventional pole-climbing robot and can prevent the aloft pole-climbing robot from dropping due to accidental power outage when the robot climbs along the pole, so that the anti-drop device is good in safety; the anti-drop device has the advantages of being reasonable in structural design, simple and convenient to use, low in cost, and the like.
Owner:CIVIL AVIATION UNIV OF CHINA

Elevator landing floor hole filling system and method thereof

The invention provides an elevator landing floor hole filling system and a method thereof. The system is used for an elevator for at most three layers of floors. The elevator comprises an elevator control system, a car, a second-floor hole and a third-floor hole, and is characterized by further comprising a car bottom cover plate, a second-floor cover plate and a third-floor cover plate, wherein the appearance of the car bottom cover plate is matched with the appearance of the second-floor hole, the appearance of the second-floor cover plate and the appearance of the third-floor cover plate are correspondingly matched with the appearance of the third-floor hole, the bottom of the car is locked by a first normally-closed type electromagnetic opening and locking device to fix the car bottomcover plate, the second-floor hole is locked by a second normally-closed type electromagnetic opening and locking device to fix the second-floor cover plate, and the third-floor hole is locked by a third normally-closed type electromagnetic opening and locking device to fix the three-floor cover plate; and the elevator control system is correspondingly connected with the first normally-closed typeelectromagnetic opening and locking device, the second normally-closed type electromagnetic opening and locking device and the third normally-closed type electromagnetic opening and locking device inan electric control mode. According to the system and the method, after the car leaves the landing, the floor holes of the car projection area is effectively filled, so that the risk that a person falls from the floor holes is prevented, and the safety of surrounding personnel is protected.
Owner:SHANGHAI SHENGDISI AUTOMATION EQUIP

FPGA operation box convenient to move

The invention discloses an FPGA operation box convenient to move. The FPGA operation box comprises a box body, wherein a lower position of a lower wall plate of the box body is provided with a movingchannel, side walls, on two sides of a cover plate, of the box body are each welded with a pair of hanging frames in a mirror image mode by extending transversely, the hanging frames are connected with connecting strips, one ends of the connecting strips are pivoted with the hanging frames, the other ends of the connecting strips are provided with arc-shaped hanging lugs, and the connecting stripscan rotate semi-circularly with the hanging frames as the center. Abrasive paper is adhered to the outer wall, located in the moving channel, of the lower wall plate, and protection of the lower wallplate by a moving support of a transportation tool is facilitated. The problem that in the prior art, an operator executing at the upper wall of the FPGA operation box falls off is avoided.
Owner:XIAN MEIZHILV INFORMATION TECH CO LTD
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