698results about How to "Prevent derailment" patented technology

The invention provides an energy absorption device arranged at the front end of a train. The energy absorption device comprises a train coupler seat, a support, a pressure feeding tube, a train coupler, a guiding component, energy absorption elements and an anti-climbing assembly, wherein the support is fixedly arranged at the front end of the train; the pressure feeding tube is fixed at the train coupler seat; a train coupler connecting end is mounted in the pressure feeding tube in an inserted manner, and can slide relative to the pressure feeding tube; one end of the guiding component is fixed with the train coupler seat; the other end of the guiding component is mounted at the support in an inserted manner, and can slide relative to the support; the guiding component can limit the swing of the pressure feeding tube; the energy absorption elements are arranged between the train coupler seat and the support; the anti-climbing assembly is fixedly arranged on the support, and can be compressed. According to the energy absorption device disclosed by the invention, the energy generated by collision is absorbed by a manner that various energy absorption assemblies are arranged in a limited space; besides, the displacement perpendicular to the self direction, of the train, is limited by the guiding component and the anti-climbing assembly, so that train climbing and derailing are avoided.

The invention relates to a hydraulic brickmaking demoulding machine and a brickmaking mould thereof. The demoulding machine comprises a frame, a lifting mechanism, a supporting mechanism and an ejector mechanism, wherein the lifting mechanism, the supporting mechanism and the ejector mechanism are mounted on the frame. The brickmaking mould comprises a mould base and a cart which are separably connected with each other. Wheels of the cart are clamped on rails on a lifting table of the lifting mechanism, and demoulding is completed under cooperation of the lifting mechanism, the supporting mechanism and the ejector mechanism. The hydraulic brickmaking demoulding machine and the brickmaking mould are simple in structure and stable and reliable in demoulding performance. The whole demoulding process is automatically completed via the demoulding machine, so that demoulding efficiency is improved, and labor intensity is reduced for workers. Formed bricks are left on a bottom plate of the cart constantly, so that reject ratio of the bricks is reduced greatly, and demoulding yield is high. In addition, the formed bricks are directly conveyed out of the demoulding machine through the cart, so that secondary conveying is avoided, efficiency is higher, and damage to the formed bricks caused by secondary conveying is also avoided. Furthermore, the demoulding machine is further provided with a limit baffle for preventing the mould from derailing when moving on rails, and is more stable in performance.

The invention discloses a inertial guidance vehicle navigation method based on two-dimensional code positioning, and an inertial guidance vehicle based on the navigation method. According to the inertial guidance vehicle navigation method and the inertial guidance vehicle, a two-dimensional code label is arranged on a site, real-time online calibration can be carried out on a trajectory of the inertial guidance vehicle during the operation process thereof, the possibility of derailment is avoided, and objects on the inertial guidance vehicle can be fetched more accurately through a feedback adjustment of a position of a fetching mechanical arm at a target point.

A camera dolly comprises a base and a plurality of legs extending radially outward from an inner end pivotally coupled on the base to an outer end supporting a wheel assembly thereon such that the wheel assemblies are arranged for rolling movement along a pair of rail members extending in a longitudinal direction. Each wheel assembly comprises a plurality of wheels spaced apart from one another in the longitudinal direction in two rows arranged to receive the respective rail member therebetween. Each wheel assembly is pivotal about an upright axis and a horizontal axis relative to the respective leg. A horizontal deck plate includes plural sets of mounting apertures therein corresponding to different relatively fixed relationships of the legs. A socket formed centrally in the base threadably receives an upright post therein which support the camera thereon spaced above the base.

The invention discloses a flexible rope driving series-parallel spraying robot mechanism and an operating method thereof. The flexible rope driving series-parallel spraying robot mechanism is composedof a static platform frame, a flexible rope guiding pulley block system, driving flexible ropes, a movable platform and a driving mechanism, wherein a movable platform shell is connected with eight flexible ropes in parallel and is driven by the eight flexible ropes to realize three translational motion degrees of freedom; and a spray gun is connected with the movable platform shell in series through a candan universal joint and is connected with four flexible ropes in parallel and is driven by the four flexible ropes to realize two rotating degrees of freedom. The flexible rope driving series-parallel spraying robot mechanism has the following benefits: the flexible ropes are connected with the spray gun at the tail end in parallel and control three translational motion degrees of freedom and two rotating degrees of freedom of the spray gun; the flexible rope driving series-parallel spraying robot mechanism has the characteristics of being small in movement inertia and flexible in action; and driving electric appliances are mounted on the bottom layer of the static platform frame in a centralized manner to easily realize explosion prevention.

The invention provides a testing platform for position and attitude precision of a dual-antenna receiver and a testing method thereof. The testing platform comprises a supporting device, a linear guide rail and a traction system. The supporting device consists of a lifting support and a rotation support. The linear guide rail includes a U-shaped-groove guide rail with an upward opening, a sliding block, and a planar slipway, wherein the sliding block and the planar slipway are arranged above the U-shaped-groove guide rail; the U-shaped-groove guide rail is installed on a support platform; and two antennas are installed on the slipway. The traction system includes a speed regulating motor, a driving wheel, a gear belt, limit switches and a fixedly connection device; the speed regulating motor and the driving wheel are fixed on steel guard bar tubes at the two sides of the linear guide rail by the fixedly connection device; the gear belt is connected with the speed regulating motor and the driving wheel; one side of the gear belt is connected with the slipway fixedly; and the limit switches are arranged at the two ends of the linear guide rail. Therefore, the position and attitude precision of the dual-antenna receiver under different base line lengths and different speeds can be tested; and a problem of difficult positioning and attitude measuring precision evaluation of the dual-antenna receiver can be solved.

A carriage lateral movement-limiting system capable of effectively restricting the lateral movement of a derailed carriage. The system comprises derailment prevention guards (62a, 62b) laid along the inside of paired left and right rails (60a, 60b), and a lateral movement-limiting device (52) installed on the lower part of the carriage (30). The device (52) has a stopper (51) projecting downward at a position between the wheels (36a, 36b) of the carriage and brought into slidingly contact with the inner surfaces of the derailment prevention guards (62a, 62b) when the carriage is derailed.

A pedal driven aquatic propulsion system comprises a driven sprocket located substantially vertically beneath a drive sprocket. The planes of rotation of the drive and driven sprockets are disposed substantially at right angles to one another. An endless chain drive transmits power from the drive sprocket to the driven sprocket, operating in a twisting three-dimensional orientation as it loops around the sprockets. A pivoting, self tensioning idler arm is adjustably mounted on a frame that encloses the propulsion drive, and comprises an idler sprocket disposed in rotatable contact with the chain drive to maintain the chain under constant tension. The plane of rotation of the idler sprocket is tilted and offset from the planes of rotation of the drive and driven sprockets. The constantly tensioning system comprises a series of stationary and flying idlers aligned to the natural twist of the chain.

The invention provides a sorting trolley and a sorting system, relates to the technical field of logistics equipment. The sorting trolley and the sorting system solve the technical problems of complexstructure and tedious installation of the sorting trolley. The sorting trolley comprises a belt conveying mechanism and a travelling mechanism, wherein the travelling mechanism is detachably fixed tothe lower part of the belt conveying mechanism through at least one side plate; and the travelling mechanism is of a frame structure, a clamping mechanism is arranged at the bottom of the travellingmechanism, a secondary magnet is clamped in the clamping mechanism, and the secondary magnet is arranged along the central axis direction of the sorting trolley. The sorting system comprising the sorting trolley is further provided. According to the sorting trolley, the belt conveying mechanism and the travelling mechanism are detachable connecting modules, the universality is high, machining is simple, installation is convenient, and meanwhile, reasonable distribution can be performed according to the layout of the sorting system; and the secondary magnet is arranged along the central axis direction of the sorting trolley, so that the phenomenon that while moving, the trolley deviates from a rail center and collides with components such as a motor in the rail, so that the trolley is derailed is prevented.

Provided is a door hanging apparatus which reliably prevents a door wheel from derailing and a door from slanting when the door is opened and closed, and with which there is almost no running resistance from a derailment prevention mechanism. Running surfaces (18a, 18b) vertically facing each other are disposed in upper and lower rails (13a, 13b). First door wheels (19, 20) run in contact with the lower rail (13b), and are rotatably supported by a first door wheel supporting member (21) which suspends a door (11). Second door wheels (24, 25) are rotatably supported by swinging members (22, 23) which are swingably linked to the first door wheel supporting member (21), and are disposed so as to be able to make contact with the upper rail (13a). A drive linking part (26) is configured to hold and link the door (11) to an opening / closing drive mechanism (12). An elastic linking mechanism (27) includes elastic parts (30a, 30b) which are able to change the relative positions of the second door wheels (24, 25) and the drive linking part (26), and connects the swinging members (22, 23) to the drive linking part (26).

The invention provides an anti-derailing device for a rail vehicle bogie. The anti-derailing device comprises at least one installing seat (1) installed at the bottom of the rail vehicle bogie (9). The installing seat (1) is provided with an anti-derailing sliding plate (2) stretching to ground rails (8). Transverse positioning and vertical-direction stretching length of the anti-derailing sliding plate (2) on the installing seat (1) simultaneously meet the following requirements that 1, the anti-derailing sliding plate (2) is located on the inner side of the ground rails (8) when a rail vehicle runs normally; 2, when at least one wheel set (6) of the rail vehicle climbs on the rails, the anti-derailing sliding plate (2) can act on the ground rails (8) to form transverse limiting junctures to limit the freedom degree of the rail vehicle, and then the rail vehicle is still restrained by the ground rails (8). According to the anti-derailing device, the rail vehicle bogie can be prevented from derailing during operation, especially derailing probably occurring after the wheel sets climb on the rails can be avoided, and therefore train safety and transporting efficiency are improved.

A quilting table (20) includes a frame (22) having box channel rails (50, 52), a first carriage (212), moveable relative to a longitudinal dimension (30) of the frame (22), having wheels (224) engaged with the box channel rails (50, 52), and a second carriage (214), moveable relative to a transverse dimension (32) of the frame (22), supporting a sewing machine (34). A fabric support system (24) includes three fabric payout bars (128, 130, 132) and a take-up bar (134). Compressive force is utilized between the bars (128, 130, 132, 134) and their supports (120, 122) for fabric tensioning. The bars have a rectangular cross-sectional shape and indicia (190) for facilitating fabric placement. An overhead shelf (28) extends across dimension (30) of the frame (22) so that an operator on a needle side (51) of the quilting table (20) can currently view a quilting guide (268) and the fabric (206).

The invention discloses an automatic traveling detecting device suitable for an air train track and belongs to the field of air train track detection. An air train trolley capable of automatically operating on the track and convenient to dismount and place is arranged on the air train track, and various information collecting sensors, a navigation communication system and an obstacle cleaning mechanism are arranged on the air train track, so that the operation state of the air train track is automatically detected, the specific positions of damaged parts are fed back in real time, and obstacles in the air train track are cleared. The automatic traveling detecting device suitable for the air train track is simple in structure, easy to operate and control and capable of greatly improving theoverhauling efficiency of the air train track, reducing the overhauling cost of the air train track, and ensuing normal and stable operation of the air train track.

A tilting assembly and a tilting actuator having the same are provided in the present invention. The present invention comprises a stationary member having an inner space, a mirror holder having a shaft supported rotatably by the opposed sides to tilt about a shaft, and a drive unit connected to the mirror holder to apply vertical external force on the mirror holder via the reciprocal action by a magnetic field and an electric field. The present invention allows tilting movement of the mirror without any noise or vibration, saves the costs, and results in uniform tilting quality across the products.

The invention discloses a railway running gear of a road-railer in railway running vehicles. The railway running gear comprises a middle body and a chassis; the middle body is arranged on the upper portion of the chassis and comprises a traction pin, a framework, two sliding rails and four or more vibration reduction blocks, the traction pin is rotatably hinged to the framework, the two sliding rails are fixed to the upper portion of the framework, and the four or more vibration reduction blocks are fixed to the lower portion of the framework; the chassis comprises gear boxes, axles, wheels, a supporting frame, end connection rods, a motor and a brake device; the motor is in transmission connection with the gear boxes, the supporting frame is fixed between the middles of the two gear boxes, and the end connection rods are fixed between the ends of the two gear boxes respectively; the brake device comprises brake discs and brake clamps, the brake discs are arranged on the axles, the brake clamps are arranged on the end connection rods or the gear boxes or the supporting frame, and the brake clamps are matched with the brake discs. The railway running gear has high rotational freedom, the railway running gear can get on and get off a rail conveniently and fast, and derail of a climbing rail can be prevented in the turning process.

The invention discloses a surface cleaning device for a solar cell module. The surface cleaning device comprises a frame, a strut rail, racks, a gantry rail, a portal frame, a motor and a plurality of brush wheels, wherein the strut rail, the racks and the gantry rail are respectively fixedly connected to the frame; the feet ends of the portal frame are movably connected to the gantry rail through travelling wheels; supporting wheels are arranged on the lateral surface of the portal frame; the supporting wheels and the strut rail are in movable pressure welding; the supporting wheels and the travelling wheels are pulleys; the plurality of brush wheels are rotatably connected to a shaft hole of the portal frame through brush shafts; each brush shaft is fixedly connected to a brush gear; a shell of the motor is fixedly connected to the portal frame; an output shaft of the motor is fixedly connected to a motor gear; the motor gear and each brush gear are respectively engaged with the corresponding rack; teeth of each rack are arranged at the bottom surface of each rack; a reserve power supply is arranged on the frame; travel switches are arranged on the frame or the portal frame; the motor is provided with a control unit; signal output ends of the travel switches are communicated with a motor control unit signal through a signal line.

The invention discloses an automatic board grinding machine which comprises a base. A grinding groove is formed in the top of the base, limiting grooves are formed in the two sides of the base, a grinding motor is arranged above the grinding groove, and the bottom of the grinding motor is fixedly connected with the top of a grinding wheel through a rotary shaft. The left side and the right side of the grinding motor are both fixedly connected with a fixing beam. One side of the bottom of each fixing beam is fixedly connected with a fixing column, a support is arranged at the bottom of each fixing column, the lower portions of the supports are connected with auxiliary moving wheels in a sleeving mode through rotating shafts, and the lower portions of the fixing columns are provided with limiting blocks corresponding to the limiting grooves in position. The side, far away from the corresponding fixing column, of each limiting block is provided with a guide wheel. The top of the grinding motor is fixedly connected with a movable motor, and a rotary shaft of the movable motor is sleeved with a gear. The automatic board polishing machine achieves the automatic board grinding effect, manual pushing is not needed, time and labor are saved, and accidents caused by negligence of operators are avoided.

The invention discloses a middle-low-speed magnetic suspension rescue robot. The middle-low-speed magnetic suspension rescue robot comprises a rack, folding bending mechanisms, a detecting rescue mechanism and an autonomous cruise module; the rack stretches over two middle-low-speed magnetic suspension F rails to be detected; the two folding bending mechanisms are arranged at the two ends of the rack and are located above the F rails, and each folding bending mechanism is provided with a walking wheel pair and a clamping wheel pair; the detecting rescue mechanism comprises a distance measuring sensor, a camera and a rescue contact rod, the distance measuring sensor is arranged on the rack and located between the two F rails, the camera is arranged above the rack, and the rescue contact rod is horizontally mounted on the side face of the rack; the autonomous cruise module is mounted below the rack and used for achieving free walking of the rescue robot along the F rails. In-time rescue of the F-rail abnormal detection robot is achieved, and the beneficial effects of being simple in structure, convenient to operate and the like are achieved.

The invention relates to a two-way operation grate-cleaning crusher; a crushing transmission mechanism can be used for driving a two-way crush roller mechanism to move in the positive direction and the negative direction; the two-way crush roller mechanism comprises a roller body, two-way crush tooth holders and crush teeth; the roller body is provided with the plurality of two-way crush tooth holders; the outer end of each two-way crush tooth holder is symmetrically provided with two crush teeth; a bridge-type structure is adopted by a stand; the stand comprises an end beam and two intermediate beams; the two intermediate beams are respectively arranged at the two sides of the roller body, and are respectively provided with a shearing mechanism which comprises a shear knife; the positions of the shear knives correspond to those of the two-way crush tooth holders; and a shearing pair is formed by the shearing mechanisms and the two-way crush tooth holders. The two-way operation grate-cleaning crusher has the functions of two-way crush cleaning and efficient shearing, can automatically lubricate, prevents the accident caused by deorbit of equipment, can be used for efficiently cleaning all residues on a screening grate, and is reasonable in structure, high in reliability, simple in use, simple and convenient to maintain and long in service life.

The invention discloses an unloading-leveling integrated stone ballast hopper vehicle which comprises a vehicle body, a stone ballast unloading device, a braking device, a coupler buffer device and a steering frame. The stone ballast unloading device comprises a stone ballast unloading bottom door, a mechanical transmission device, a wind-control stone ballast unloading device and a manual stone ballast unloading device. A stone ballast leveling device is arranged on the vehicle body. The stone ballast leveling device comprises stone ballast leveling plate formation and a stone ballast leveling plate lifting driving mechanism. The stone ballast leveling plate formation moves to a steel rail when the stone ballast leveling plate formation descends through the stone ballast leveling plate lifting driving mechanism, and at the moment, the lower end face of the stone ballast leveling plate formation is flush with or is lower than the upper end face of the steel rail. The stone ballast leveling plate formation forms a self-locking state when the stone ballast leveling plate formation ascends through the stone ballast leveling plate lifting driving mechanism, and at the moment the stone ballast leveling plate formation is separated from the steel rail. According to the unloading-leveling integrated stone ballast hopper vehicle, the stone ballast leveling device is arranged on the vehicle body, when a middle door unloads stone ballast at the middle position of a rail through wind-driven operation and stone ballast piles are formed, the stone ballast leveling plate formation in the stone ballast leveling device can scrape and level the stone ballast higher than the rail height, rail derailment caused by piled stone ballast is effectively avoided, and leveling while walking of the stone ballast hopper vehicle is achieved.

Provided are a conical spring stiffness changing and wrinkle and cracking prevention method, and a product. A conical spring comprises an inner cone, a rubber body, and an outer cone. The rubber body surrounds the inner cone. The outer cone surrounds the rubber body. The rubber body, and the inner cone and the outer cone form a rubber metal spring arranged in a conical manner. The conical spring is characterized in that a rubber body upper rubber profile and a rubber body lower rubber profile of the conical spring use a multisection structure form. The rubber body upper rubber profile is a multisection downhill structure, and the rubber body lower rubber profile is a multisection uphill structure. Through changing the shape, slope, and length of each section, and the number of sections in the multisection downhill structure of the rubber body upper rubber profile and the multisection uphill structure of the rubber body lower rubber profile, the size of stiffness changing and the position of stiffness changing of the conical spring are adjusted, and adjustment of multiple stiffness changing is realized through controlling the number of multisection.

The invention discloses a rail grinding trolley. The rail grinding trolley comprises a frame, a grinding unit and derailment protection devices, wherein traction rods are separately arranged on the upper two sides of the frame, walking wheels are fixed to the lower part of the frame, the grinding unit is arranged in the frame, a dust collection channel is arranged on the upper part of the frame, the derailment protection devices are fixed to the left side and right side of the frame, lifting devices are arranged on the two sides of the inner part of the frame, deflection electric cylinders arearranged below the lifting devices, guide rods are arranged on the lower parts of the deflection electric cylinders, guide seats are arranged on the outer sides of the guide rods, and electric cylinders are fixed to one side of the guide seats. The rail grinding trolley is provided with a transverse moving structure capable of moving horizontally conveniently, and the guide seats can move on theguide rods under the driving action of the electric cylinders, so that the transverse moving of the grinding unit is realized, obstacles on both sides of a rail are conveniently avoided during grinding, and the operation range is expanded.

A pedal correction mechanism used in an elliptical trainer is disclosed to include a pedal link having a coupling portion at the inner side thereof, and a pedal bracket carrying a pedal and having a shaft pivotally inserted into the coupling portion of the pedal link for allowing the pedal bracket to be biased leftwards and rightwards on the axis of the shaft relative to the pedal link to eliminate cumulative tolerances among component parts, preventing derailment and reducing noises.

The invention relates to a double-layer running urban rail transportation system, which mainly consists of trains, a station, stairs, bridge piers, rails, connecting plates and a current collection rail, wherein the bridge piers are arranged at both sides of a cycle path, the rails are erected at the top ends of the bridge piers, the trains run along the upper layer and the lower layer of the rails, the upper layer and the lower layer are non-interfering with each other, the double-layer running and the directional passing are realized, a suspension type train runs at the lower layer, train wheels run in grooves under the rails, the station is fixedly arranged on the bridge piers, the two sides of the rails are provided with an upper pedestrian path and a lower pedestrian path, the station is connected with the ground by the stairs, and passengers go up to the pedestrian paths at the two sides through elevators or the stairs around the bridge piers, so as to get on or off the double trains. The transportation method has the advantages that the structure is simple, the manufacturing cost is low, the convenience is provided for the passengers, safety and stability are realized, and meanwhile, the space above the road can be sufficiently utilized.

The invention discloses a device for preventing a mine car from derailing and sliding through electromagnetic driving. A supporting frame is welded at the bottom of the mine car; an action lever is arranged at the bottom end of the supporting frame through a movable pin shaft; the bottom end of a return tension spring is welded at the left end of the action lever; the top end of the return tensionspring is welded at the bottom of the mine car; a derailing and sliding preventing assembly is fixedly arranged at the left end of the action lever; a lever soft iron block is welded at the right endof the action lever; a lever driving electromagnet core is fixedly arranged at the bottom of the mine car over the lever soft iron block; a driving electromagnetic coil is wound on the lever drivingelectromagnet core; the action lever acts by an electromagnetic force generated by the lever driving electromagnet core after the driving electromagnetic coil is switched on; sliding and derailing arerealized through the derailing and sliding preventing assembly; and the device is scientific and reasonable in design, simple in structure and convenient to operate.

Simultaneous displacement device for sliding doors, being a first sliding leaf (7) joined to a first cogged belt (9) established between a first set of cogged pulleys (11) and (12) which rotate freely on a first axis (13) and second axis (14) respectively, and a second sliding leaf (8) joined to a second cogged belt (10) established between a second set of cogged pulleys (15) and (16) which rotate freely on said first axis (13) and second axis (14) respectively, said device comprising clutching means (2) which enable to adopt a first position where the first cogged belt (9) and the second cogged belt (10) move independently, and a second position where the first cogged belt (9) and the second cogged belt (10) move integrally to enable the simultaneous displacement of the first sliding leaf (7) and of the second sliding leaf (8).

The invention discloses a low and medium speed magnetic levitation icebreaking and snow melting cleaning robot which comprises a machine frame, two folding bending mechanisms, an ice melting cleaning mechanism and an autonomous cruising module. The machine frame stretches over two rails F of low and medium speed magnetic levitation to be detected. The two folding bending mechanisms are arranged at the two ends of the machine frame and located above the rails F. Each folding and bending mechanism is provided with a walking wheel pair and a clamping wheel pair. The snow melting cleaning mechanism comprises a fixed frame, a rail F obstacle removal cleaning unit and an ice melting heating unit. The fixing frame is installed on the machine frame and located above the folding bending mechanisms and arranged in the extending direction of the rails F. The rail F obstacle removal cleaning unit and the ice melting heating unit are arranged at the two ends of the fixing frame. The autonomous cruising module is installed below the machine frame. Rail F ice and snow melting and cleaning can be achieved, and the low and medium speed magnetic levitation icebreaking and snow melting cleaning robot has the advantages of being simple in structure, convenient to operate and the like.

The invention discloses an automobile sliding window, and relates to the technical field of automobile windows. The automobile sliding window comprises an integral window frame, fixed window glass, an upper guide rail, a lower guide rail and a sliding glass window assembly. The integral window frame is provided with a window which is opened and closed by the sliding glass window assembly, the sliding glass window assembly is provided with sliding pieces stretching into the upper guide rail and the lower guide rail respectively, sliding grooves are formed in the opposite end faces of the upper guide rail and the lower guide rail, locking clamping positions are arranged in the sliding grooves, the sliding glass window assembly is provided with lock catch devices which are clamped with the locking clamping positions, arched leaf springs are arranged at the upper end and the lower end of the window frame of the sliding glass window assembly, one end of each leaf spring is fixed to the window frame of the sliding glass window assembly, the other end of the corresponding leaf spring is hung in the air, and the arched top of each leaf spring is a plane. A notch is formed in the outer side wall of the upper guide rail, and a lock cover for sealing the notch is mounted on the upper guide rail. Compared with the prior art, the automobile sliding window is smoother in sliding, good in sealing performance and easy and convenient to disassemble and assemble.

The invention relates to a gantry assembly for an electric fork lift truck. The gantry assembly for the electric fork lift truck comprises an outer gantry, an inner gantry and a fork arm carrier. Two bearing seats are arranged on the two sides of the outer gantry at the same height. A bearing rod is arranged between the two baring seats in a penetrating mode. The outer gantry is hinged to the front end of a truck body through the bearing rod. A hinged base is arranged in the middle of the lower end of the outer gantry. An oblique oil cylinder is hinged to the hinged base. The other end of the oblique oil cylinder is fixed to the front end of the truck body. The outer gantry is hinged to the front end of the truck body through the bearing rod, the oblique oil cylinder is arranged between the outer gantry and the front end of the truck body, in this way, the angle, which cannot be adjusted originally, of the fork arm carrier is made adjustable, and goods are unlikely to fall when being transported through the electric fork lift truck; meanwhile, the electric fork lift truck is also suitable for certain goods in the shapes which cannot achieve transportation and piling originally.