41results about How to "Limit the direction of motion" patented technology

The invention discloses a straightening device for an electric cable wire used in the seabed. The straightening device for the electric cable wire used in the seabed comprises a work box, a material guiding machine and stretching vehicles, wherein a top part of the work box is provided with two symmetrical grooves, a first sliding rail is fixedly mounted on the top part of the work box, a machineframe seat is arranged inside the work box, an electric motor is fixedly mounted on a top part of the machine frame seat, and a rotating shaft is fixedly mounted on an output end of the electric motor; a first toothed wheel is fixedly mounted on an end, positioned away from the electric motor, of the rotating shaft; a second toothed wheel is connected to a right side of the first toothed wheel inan engaged manner; a fixed rod is sleeved in an inner ring of the second toothed wheel in a movable manner; an end, positioned far away from the second toothed wheel, of the fixed rod is connected with a back surface of an inner wall of the work box through a first bearing seat; through engagement between a first rotating wheel, a second rotating wheel and a third rotating wheel, two stretching vehicles on the top part of the work box are driven in an opposite direction so as to stretch the electric cable wire, the electric cable wire can be strengthened quickly, and no damage can be caused tothe electric cable wire.

The invention relates to a device for attaching double-faced adhesive tape to a cloth curtain. The device comprises a rack and a press fit mechanism arranged on the rack. The press fit mechanism comprises a press fit cylinder which is perpendicularly arranged on the rack, and a cloth curtain pressing plate which is arranged at the bottom end of the press fit cylinder. The device is characterized in that a positioning mechanism is arranged on one side of the cloth curtain pressing plate, wherein the positioning mechanism comprises a supporting shaft which is longitudinally arranged on the rack, and a movable clamping piece which is arranged between the supporting shaft and the cloth curtain pressing plate; a feeding mechanism is arranged on the side, facing the press fit mechanism, of the positioning mechanism, wherein the feeding mechanism comprises a first clamping piece which can move transversely in the extension direction of the cloth curtain pressing plate. The device further comprises a cutting mechanism, wherein the cutting mechanism comprises a cutting piece which is arranged between the movable clamping piece and the cloth curtain pressing plate, and two second clamping pieces which are arranged on the two transverse sides of the cloth curtain pressing plate respectively, and the cutting piece comprises a cutter which can move in a vertical plane to cut the adhesive tape; the movable clamping piece, the first clamping piece and the second clamping pieces can clamp and release the adhesive tape respectively. The device is good in adhesive tape attaching quality and high in adhesive tape attaching efficiency.

The invention relates to an automatic bottle clamping, placing and discharging device for a visible foreign matter detector. The device comprises a base, a mounting seat, a mechanical arm, a door opening and closing device, a bottle discharging device and a translation device, wherein the mounting seat is fixed with the translation device; the translation device is fixed on the base; and the mechanical arm, the door opening and closing device and the bottle discharging device are connected with the mounting seat. The device is reasonable in structural design, the mechanical arm can automatically translate, clamp and place a liquor bottle, and the liquor bottle is reliably and stably clamped and loosened; the door opening and closing device automatically opens or closes the door of a bottle falling groove and is matched with the bottle discharging device to push the liquor bottle in a bottle discharging box from the bottle falling groove; and the mechanical arm, the door opening and closing device and the bottle discharging device are synchronously controlled to translate by the translation device in the whole process, bottle taking, falling and discharging are integrated, and full-automatic control is realized.

The invention provides an oil well pump draining liquid by opening valve balls. When a piston is in the pump and liquid needs to be drained, the piston presses down an articulated ejector rod, the articulated ejector rod is lengthened and pushes a ball moving plate, the ball moving plate opens a fixed valve ball, a ball pushing cylinder on the piston simultaneously pushes up a lower travelling valve ball, the lower travelling valve ball pushes up a ball pushing rod and the ball pushing rod pushes up an upper travelling valve ball, thus completing drain of the liquid above the valve balls into a well. When the piston is not in the well and liquid needs to be drained, a weighing rod presses down the articulated ejector rod, the articulated ejector rod is lengthened and drives the ball moving plate to open the fixed valve ball, thus completing drain of the liquid above the fixed valve ball into the well. During oil pumping production, the piston does not come into contact with the articulated ejector rod, thus not affecting sealing of the valve balls and valve seats; after the valve balls are opened, conventional well-flushing to remove paraffin can be completed; when the oil well pump is overhauled, the valve balls are opened to drain liquid, thus preventing the liquid in the well from being brought to the ground, protecting the environment and also reducing the labor intensity of operators.

The invention discloses a vascular interventional surgical robot, and belongs to the field of medical equipment. The robot is used to replace human hands for vascular interventional surgery, and comprises five modules: a pushing device, a twisting device, a guide suture guide device, a suture pressing device and a bedside positioning device. The pushing device drives the twisting device to clamp aguide suture catheter to move linearly. The twisting device drives a two-finger chuck coaxial with a big gear to clamp the guide suture catheter to rotate, and the two-finger chuck clamps the guide suture catheter by opening and closing. The guide suture guide device drives a cam to adjust distance of guide wheels to adapt to the diameter of the guide suture catheter. The suture pressing device is controlled by an electromagnet, two moving fingers are closed when being electrified to clamp and fix the position of a guide suture. When power is cut off, the moving fingers are separated, and theguide suture can move freely. The bedside positioning device comprises an X-axis moving device and a Y-axis moving device, and the X-axis moving device drives the Y-axis moving device to move linearly through a ball screw. The Y-axis moving device drives the vascular interventional surgical robot to move and position through the ball screw.

Disclosed is an inner sliding block contraction mould. The inner sliding block contraction mould comprises a bottom plate, a plurality of guiding blocks evenly distributed on the bottom plate in the circumferential direction of the center of the bottom plate and an upper cover plate fixed to the guiding blocks. A plurality of first sliding blocks, second sliding blocks used for driving the first sliding blocks to slide towards the outer side and tapered wedges used for driving the second sliding blocks to slide towards the outer side are arranged between the bottom plate and the upper cover plate. The first sliding blocks and the second sliding blocks are located at the peripheries of the tapered wedges. Each first sliding block is mounted on the corresponding guiding block in a sleeving mode. Each second sliding block is located between the two adjacent first sliding blocks. The inner side faces of the first sliding blocks and the second sliding blocks are connected with reset mechanisms used for driving the first sliding blocks and the second sliding blocks to slide towards the center. The inner sliding block contraction mould has the distraction and contraction functions, in theworkpiece forming process, a workpiece is supported and abutted against through the distracted first sliding blocks and the distracted second sliding blocks; and after workpiece forming, the first sliding blocks and the second sliding blocks are contracted, the workpiece is taken out, and machining of inward folding or the pressure level of a round barrel body part is facilitated.

The server aging vehicle with afool-proof brake mechanism comprises a vehicle body and walking wheels, the walking wheels are installed at the four corners of the bottom of the vehicle body, the vehicle body comprises a vehicle frame, the whole vehicle frame is formed by welding steel pipes, a containing layer is installed on the vehicle frame, and the fool-proof brake mechanism is installed on the vehicle frame. When the aging vehicle drives the server to move, the server is limited through astop lever and astop block; when the server is tested, the movement of the aging vehicle is limited, so that the server on the aging vehicle in different working states can be limited and protected, the phenomenon of server damage caused by server crash is avoided, the test cost is reduced, and the test safety is improved.

The invention discloses dust removal type ceramic grinding equipment comprising a base. A grinding box is fixedly connected to the upper end of the base; a treatment chamber is arranged in the grinding box; a transverse plate is fixedly connected to the inner wall of the right side of the treatment chamber; a grinding mechanism is installed at the upper end of the transverse plate and used for grinding ceramic; the area, located below the transverse plate, of the treatment chamber is provided with an air blowing mechanism, and the air blowing mechanism is used for blowing dust generated by grinding; and an ash collecting groove is formed in the inner bottom of the treatment chamber, and a dust collecting mechanism matched with the air blowing mechanism is installed at a groove opening of the ash collecting groove. In the using process of the grinding equipment, the dust generated by grinding can be collected in a centralized mode, and the situation that the dust diffuses is effectivelyavoided.

The invention provides a micro sensing device based on a coriolis force effect. According to the micro sensing device, a mass body refers to a movable magnetic structure body; a guide bracket body is arranged between the mass body and a displacement driving body; at least one position constraint elastic sheet a is connected between the mass body and the guide bracket body; each position constraint elastic sheet a is used for constraining the vertical displacement of the mass body. Meanwhile, the invention provides a combined structure of the sensing device. Based on the coriolis force effect, a sensing mechanism is arranged in a shell or is arranged on each position constraint elastic sheet, and the miniaturization of the device is realized. According to the position constraint elastic sheets, the moving direction of a driving magnetic structure body and the movable magnetic structure body is constrained, the stable spatial movement position of the movable magnetic structure body is realized, a magneto-electricity conversion signal is conveniently acquired, and the sensing precision is improved. Moreover, multiple kinds of sensing forms are provided, the signal magnitude obtained by the multiple sensing forms is enhanced and averaged, and the sensing precision is relatively high.

The invention discloses a computer host case with a dust cleaning device, which includes a box body, a motor is arranged on the right rear side of the inside of the box body, the motor is connected with a gear through a motor shaft, the inner right rear side of the case body is connected with the short ends of two parallel L-shaped sliding rods, the two L-shaped sliding rods are square sliding rods, the L-shaped sliding rods are slidably connected with racks through square through holes of the racks, and the gear is positioned between the two L-shaped sliding rods and meshes with the two racks. The computer host case with a dust cleaning device has the advantages that cleaning areas can be expanded on demand, dead corners can be cleaned, residual dust can be cleaned, and the effect of preventing dust is achieved; the case facilitates the removal and replacement of adsorption plates, facilitate the removal of collected dust, is stable and safe, and will not cause dust residues; the inlet and outlet air will be separated, will not cause dust to repeatedly enter the chassis, clean dust can be treated centrally, and the structure is compact and solid.

The invention relates to an automatic transfer device for nodular cast iron pipe production, and belongs to the technical field of nodular cast iron pipe transfer equipment. The technical problems that a traditional transfer method is low in speed, long in positioning time, low in automation degree, high in noise and the like are solved. The automatic transfer device comprises a horizontal conveying device, a lifting device, two grabbing and clamping devices, a monitoring device and a control system; the horizontal conveying device comprises a machine frame, four groups of moving wheels and two groups of moving wheel driving devices, the lifting device comprises a lifting driving device and two lifting frames, and each grabbing and clamping device comprises an air cylinder, a clamping jaw mounting base, two clamping jaws and two connecting rods; and the control system is electrically connected with the moving wheel driving devices, the lifting driving device, the air cylinders, the monitoring device and a nodular cast iron pipe transmission line. The automatic transfer device is small in occupied area, high in automation degree, accurate in positioning, high in working efficiency and wide in application range, and the automation degree is increased through the monitoring device.

The present invention relates to an energy recovery device in tires based on electromagnetic induction, which includes several electromagnetic induction energy recovery modules, AC / DC converters and energy storage elements for recovering energy in tires; all of the electromagnetic induction energy recovery modules The circumferential direction is evenly spaced on the tire inner liner, and the coils contained in each electromagnetic induction energy recovery module are connected in series through wires in sequence, and form a loop with the AC / DC converter; each of the electromagnetic induction energy recovery modules will recover The electric energy delivered to the AC / DC converter, the AC / DC converter integrates the AC voltage into a DC voltage, and delivers the integrated DC voltage to the energy storage element for storage, and the energy storage element stores The electrical energy is used to power the sensors in the tire. The invention can recover the energy in the tire, so that the sensor type and transmission frequency in the tire are not restricted by the power supply, realize the real-time monitoring of the status of the wheel and the vehicle, and improve the safety and active control performance of the vehicle.

The invention discloses a cold roll transport cart convenient for unloading. The transport cart comprises a bottom plate, two mounting plates are fixedly connected to the top of the bottom plate, a top plate is fixedly connected to the top between the two mounting plates, and placing devices which are arranged at equal intervals are fixedly connected to the opposite sides of the two mounting plates; and two sliding grooves are formed in the opposite sides of each of the two mounting plates correspondingly, sliding strips are slidably connected into the four sliding grooves correspondingly, andprotection plates are arranged on the opposite sides of the two mounting plates correspondingly. After the transport cart is moved to a designated area through a pushing handle, a user can better move the convenient for unloading through arrangement of the pushing handle, an anti-skid sleeve can prevent the user from slip in the moving process, a protection plate on any one of the left side and the right side is pushed upwards to be placed above a top plate; and then a cold roller is taken down from the interior of a mounting box, so that the problem that the conventional cold roller transport cart is inconvenient to unload is solved.

The invention discloses a flashboard lifting device used for an energy storage power station, and belongs to the technical field of energy storage power stations. In the technical scheme, the flashboard lifting device comprises a flashboard and flashboard racks on the two sides of the flashboard, the flashboard is slidingly connected with the flashboard racks, a base is arranged at the tops of theflashboard racks, fixedly connected with the flashboard racks, and provided with a lifting mechanism, one end of the lifting mechanism is connected with the flashboard, the flashboard is driven by the lifting mechanism to ascend and descend, the other end of the lifting mechanism is connected with a driving mechanism, and the driving mechanism is arranged on the base. In the technical scheme, theflashboard lifting device has the advantages that the design is simple, using is convenient, when the flashboard is lifted, the two sides of the flashboard are uniformly stressed, synchronous ascending or descending is realized, it is avoided that since stress is not uniform, the two sides of the flashboard are lifted without uniformity, in this way, the probability of flashboard damage or sliding groove damage is lowered, and working efficiency is improved.

The invention relates to a lifting container for non-coal mine, in particular to an overturning type skip bucket and a dump rail thereof. The overturning type skip bucket comprises a skip bucket subassembly and a dump rail subassembly, wherein the skip bucket subassembly comprises a skip bucket and a skip bucket frame; a rotating shaft is fixed to the skip bucket frame; the skip bucket is arranged on the rotating shaft through a shaft seat that is fixedly connected to the bottom of the skip bucket, and is levelly positioned in the skip bucket frame; unloading wheels are arranged at the upper part of the skip bucket and close to an unloading direction; supports for providing assistance to the skip bucket to overturn along the dump rail are arranged at the upper ends of two side plates of the skip bucket; the dump rail subassembly comprises a dump rail bottom plate and a rail; the rail comprising concave type vertical sides is welded above the dump rail bottom plate; the rail is formed by sequentially connecting a reversed V-shaped rail section, a large arc rail section, a transverse rail section, an inclined slope type rail section, a small arc rail section and a vertical rail section; and dump rail wheels, which are matched with the supports to provide assistance to the skip bucket to overturn, are arranged at the front end of the inclined slope type rail section. The overturning type skip bucket and the dump rail of the overturning type skip bucket provided by the invention have the advantages of being simple in structure, convenient to maintain, smooth to unload, and safe and practical.

The invention discloses semi-closed digital printing equipment, and relates to the technical field of textile machinery. The semi-closed digital printing equipment structurally comprises a rack, a heating plate is fixedly mounted at the middle position of the rack, a control box is fixedly connected to the upper position of the rack, a printing mechanism is fixedly connected to the middle position of the opposite surface of the control box, the lower portion of the rack is fixedly connected with a material rolling mechanism. According to the semi-closed digital printing equipment, a cooling mechanism is fixedly connected to the inner side face of a material rolling barrel, after leather is tensioned through a tensioning mechanism, the leather reaches the material rolling barrel, the end of the leather is adhered by an adhesion body, a motor rotates to drive the material rolling barrel to rotate, and therefore the leather is flatly rolled; and through the matched use of the cooling mechanism and an air injection pipe, the cooling of the surface pigment can be accelerated, the water flow enters a cooling cylinder through an open groove, the cooling effect is doubled due to the increase of the flowing area, and the water flow flows back through a backflow hole to take away heat so as to achieve the purpose of effective cooling.

The invention discloses sex attraction forecasting equipment. The sex attraction forecasting equipment comprises a machine box, an insect treatment assembly, a camera, an electrical assembly, a sex attraction piece and a fixing assembly; the machine box is provided with a containing cavity allowing insects to enter, and the machine box is provided with a one-way insect channel allowing the insects to enter the containing cavity; the insect treatment assembly is arranged on the machine box and used for killing and / or sticking insects; the camera is arranged on the machine box and is used for photographing insects in the machine box; the electrical assembly is arranged on the machine box and is used for controlling the equipment to automatically work; the sex attraction piece is arranged in the machine box and used for sending out a chemical signal for attracting insects to enter the containing cavity from the one-way insect channel; and the fixing assembly is magnetically adsorbed or adsorbed at negative pressure or adhered in the machine box, and is used for supporting the sex attraction piece and fixing the sex attraction piece in the machine box. Through the arrangement of the fixing assembly, the sex attraction piece can be rapidly fixed to any position in the machine box, operation is easy, and the sex attraction piece can be conveniently replaced; and by arranging the one-way insect channel, insects can only enter the machine box in one direction, and the trapping performance of the equipment is improved.

The invention relates to a class power station valve. The valve comprises a valve body, a connecting body, a valve clack and a driving device, a flowing channel is formed in the valve body, an inlet hole communicated with the flowing channel is formed in the valve body, and the connecting body is arranged on the valve body and covers the inlet hole; and the driving device is arranged on the connecting body, and the valve clack is arranged on the driving device and seals the flowing channel. The driving device comprises a valve rod, a worm, an electric assembly, a manual assembly and an adjusting mechanism, the worm is arranged on the connecting body, the valve rod is arranged on the worm, and the valve clack is arranged on the valve rod; and the electric assembly, the manual assembly and the adjusting mechanism are all arranged on the connecting body, and the adjusting mechanism switches the electric assembly and the manual assembly to be connected with the worm. The pound-level power station valve has the effect of improving the efficiency.

The invention discloses a nail bin assembly capable of preventing tissue slippage, and an anastomat. The nail bin assembly comprises a bin body, a plurality of nail grooves and bosses located on the side edges of the nail grooves, and the nail grooves are formed in the upper surface of the bin body; the orthographic projections of the inner contours of the bosses coincide with the side edges of the nail grooves and are used for limiting a nail leg; each boss comprises a main body part and extending parts located on the two sides of the main body part, and the main body part is arranged aroundthe end parts of the nail grooves; and the extending parts incline to the surface of the bin body from the upper surface of the main body, and the extending parts connected with the main body throughtransition parts. Deviation of the nail legs in the suturing nail cutting and suturing process can be reduced.

The invention discloses a baby walker. The baby walker comprises a frame body and wheel devices, a connecting device comprises a first supporting rod, a second supporting rod and a third supporting rod, the upper end and the lower end of the first supporting rod are connected with an upper undercarriage and a lower undercarriage respectively in a rotation mode, a sliding bush is arranged on the first supporting rod, a fixing part is arranged on the sliding bush, and each wheel device comprises a tire, a wheel frame, a gear, a drive part and a tire lid. A binding belt assembly is further arranged on the frame body, and the second supporting rod will drive the upper undercarriage to move in the vertical direction along with vertical movement of the sliding bush to change the height of the upper undercarriage relative to the lower undercarriage and adapt to height changes of infants; the upper undercarriage and the lower undercarriage can be made in most compact foldable state, and are convenient to store; the wheel devices can only move linearly in the front and back direction, the motion direction of the wheel devices is limited, and therefore the safety performance is improved; thebinding belt can bind the upper bodies of the infants and provide support, in this way, and the baby walker can relieve loads on legs of the infants and help walking.

The invention relates to the technical field of office stationery, and discloses a gel pen ball manufacturing device capable of preventing molten steel from splashing. The gel pen ball manufacturing device capable of preventing the molten steel from splashing comprises a ball manufacturing device main body, wherein a screening net is fixedly mounted in a discharge port; a through hole is formed inthe screening net; a box body is fixedly mounted at the bottom of the through hole; a sliding groove is formed in the box body; a sliding block is slidably connected to the interior of the sliding groove; a telescopic rod is fixedly installed on the right side of the sliding block; an extrusion plate is fixedly installed on the top of the sliding block; and a spraying opening is formed in the bottom of the box body. Stainless steel is melted into the molten steel through a heating chamber in a rotating disc, the molten steel is guided into the box body through the screening net, the telescopic rod in the box body drives the sliding block to move left and right in the sliding groove and drives the left side and the right side of the extrusion plate to extrude the molten steel in the box body, and the extrusion force enables the molten steel to be sprayed out of the spraying opening in a spraying mode, so that the effect that the molten steel is splashed out to form stainless steel micro-beads is achieved.

The invention discloses a guide limiting block for a pipe shoe and an installation method of the guide limiting block. The contour of the cross section of the guide limiting block is in a trunk shape, and the guide limiting block comprises a connecting edge, an inwards-concave section, a guide edge, a limiting edge and an outer contour edge which are connected end to end in the clockwise direction; the connecting edge, the inwards-concave section, the guide edge, the limiting edge and the outer contour edge extend in the thickness direction to form a connecting face, an inwards-concave face, a guide face, a limiting face and an outer contour face respectively; the guide limiting block is of a trunk-shaped structure, the connecting face is used for fixing, the inwards-concave face enlarges the gap between the guide limiting block and a pipe shoe bottom plate, welding and coating are facilitated; the guide face and the limiting face are arranged to limit the movement direction of the pipe shoe bottom plate and a pipeline, the guide and limiting effects are achieved, installation is convenient, and the construction procedure is optimized; and by applying the guide limiting block, the problem of corrosion prevention dead corners of the guide limiting block of a pipe shoe of a process pipeline of an offshore oil platform is solved, potential engineering quality hazards can be effectively avoided, and the effects of reducing economic cost and facilitating installation are achieved.

The invention belongs to the technical field of building curtain walls, and provides an exposed framing glass curtain wall convenient for disassembling and assembling glass. The exposed framing glass curtain wall convenient for disassembling and assembling glass comprises an aluminum alloy window frame and an L-shaped connecting rod, an inner frame of the aluminum alloy window frame is provided with a barrier strip and a mounting groove, one side of the glass is attached to the barrier strip, a fixing mechanism is mounted in the mounting groove, and a clamping groove for fixing the glass is formed between the fixing mechanism and the barrier strip. The fixing mechanism comprises a first spring and a barrier block, the long edge of the L-shaped connecting rod is connected with the barrier strip through a control mechanism, and the end of the short edge of the L-shaped connecting rod is matched with a groove. According to the exposed framing glass curtain wall convenient for disassembling and assembling glass, the glass is attached to the aluminum alloy window frame, the barrier block slides out of the mounting groove under elastic force action of the first spring through pressure of the glass on the L-shaped connecting rod, the glass is mounted and fixed, the barrier block is pressed and compressed back to the mounting groove through external force, and then the glass can be disassembled. According to the exposed framing glass curtain wall convenient for disassembling and assembling glass, traditional gluing fixation is avoided, and the influence of severe weather on the sealing effect and firmness of the curtain wall glass is avoided.

The invention discloses a shutter for a die. The shutter comprises a depression bar, a pressure arm support, a pressure arm, a fixture block, and a spring footstock, wherein the depression bar is suitable for being fixed on a spring plate; a depression bar groove is formed in one side, departing from the spring plate, of the depression bar; a first bump and a second bump are arranged on one side, departing from the spring plate, of the depression bar; a first bump groove is formed in the first bump; the pressure arm support is suitable for being fixed on a movable die; the pressure arm is arranged on the pressure arm support in a pivot manner; a pressure rod with an idler wheel is arranged on the pressure arm; the idler wheel is suitable for rolling inside the depression bar groove and the first bump groove; the fixture block is arranged at the top of the pressure arm; a first buckle section is arranged on the fixture block; a second buckle section matched with the first buckle section is arranged on a fixed die; the spring footstock is suitable for being fixed on one of the movable die and the fixed die; a spring is arranged between the spring footstock and the surface of one side, departing from the spring plate, the pressure arm. The shutter disclosed by the invention is suitable for die fabrication; strong impact caused by a collision contact can be reduced; the service life of the die is prolonged; meanwhile, the shutter is more stable to carry out die sinking movement; the die quality is improved.

The hemostasis compressor comprises a device body, the device body comprises a fixing plate and fixing belts arranged at the two ends of the fixing plate, the fixing belts and the fixing plate form a closed structure, a first sleeve is fixed to the bottom of the fixing plate, and a first sliding rod is arranged at the first sleeve in a sliding and sleeving mode; a first pressing block is fixed to the bottom of the first sliding rod, a first spring is arranged between the first sliding rod and the first sleeve, the first pressing block is of a hollow structure, a first through hole is formed in the bottom of the first pressing block, a sliding block is arranged in the first pressing block in a sliding mode, and a second pressing block is arranged at the bottom of the sliding block; the position and the shape of the second pressing block are matched with the position and the shape of the first through hole. The invention relates to the technical field of cardiology. The device has the effects of improving the comfort level of a patient and ensuring the hemostasis effect of the device.

The invention discloses a server aging vehicle with a fool-proof brake mechanism, which comprises a vehicle body and traveling wheels, the traveling wheels are installed on the four corners of the bottom of the vehicle body, the vehicle body includes a vehicle frame, and the vehicle frame is integrally made of steel pipes It is welded, and a placement layer is installed on the vehicle frame, and an anti-fog brake mechanism is installed on the vehicle frame. When the aging car drives the server to move, the server is limited by the stop rod and the stopper, and the movement of the aging car is restricted when the server is tested, so that the server on the aging car in different working states can be limited and protected, and the server is prevented from falling. The phenomenon of damage to the server caused by the machine reduces the cost of the test and improves the safety during the test.

The invention provides a card holder assembly and disassembly device and a mobile terminal. The card holder assembly and disassembly device comprises a card holder, a spring, and a limiting device. The card holder is provided with a guide slot. One end of the spring is connected with the card holder through the guide slot, and the other end of the spring is spaced from a first side, near the guide slot side, of the card holder. The limiting device is fixed on terminal equipment. The limiting device is connected with the spring to fix the spring and limit horizontal and vertical displacement of the spring. The problem that card holder assembly and disassembly is complex and inconvenient in operation in the prior art is solved.