946 results about "Tipper truck" patented technology

The invention discloses an electric wheel dumper energy-saving control method and system based on braking energy recovery, and relates to the field of electric vehicle energy-saving control, and the method comprises the steps: calculating an energy fluctuation value through collecting wheel rotation speed deceleration, building a cross-cycle energy accumulation curve, and generating an energy prediction feature map; establishing a double-loop energy mapping relation according to the energy prediction feature map, dividing the double-loop energy mapping relation into a quick response path and an optimization calculation path, and outputting a time-sharing braking strategy; the torque switching process is compensated, and a smooth braking instruction is output; generating a segmented charging power curve in combination with the maximum allowable charging power; carrying out segmented adjustment on the charging current to generate a charging control signal and calculating real-time charging conversion efficiency; and the charging conversion efficiency value is distributed to the dual paths according to the time weight, and the time-sharing braking strategy is adjusted. By establishing a double-loop control strategy of braking energy prediction and charging efficiency optimization, the energy recovery efficiency is improved, and collaborative optimization of the braking and charging processes is realized.

The invention provides an autonomous unloading control method and system for a carry-scraper, and relates to the technical field of underground carry-scrapers, and the method comprises the steps: collecting roadway environment point cloud data; according to the roadway environment point cloud data, the position and posture of the carry-scraper are calculated; performing path control on the carry-scraper according to the pose of the carry-scraper in combination with the kinematics model of the articulated vehicle and the MPPI algorithm model; according to the target position, environment data of the dump truck are collected, and characteristics of the dump truck are extracted; fusing the characteristics of the dump truck to obtain fused characteristics of the dump truck, performing pose detection on the dump truck, and outputting coordinates of key points; according to the coordinates of the key points, the 3D pose of the dumper container is calculated; according to the 3D poses, key parameters of containers of the carry-scraper and the dumper are calculated; dynamically adjusting the posture of the bucket according to the key parameters; according to the adjusted posture of the bucket, global coordinates of bucket teeth of the bucket are calculated; and according to the global coordinates, the bucket teeth are adjusted so as to control the carry-scraper to carry out autonomous unloading.

The invention relates to the technical field of semitrailers, and discloses a side-turning self-dumping semitrailer which comprises a semitrailer body, a carriage, a driving mechanism and a movable side carriage door, and a side baffle structure and a door locking structure corresponding to the movable side carriage door are arranged on a lower side beam of the carriage. The side baffle structure comprises a baffle, a balance weight beam arranged on the top of the outer side face of the baffle and a plurality of supporting pipes vertically arranged on the baffle, and the bottoms of the supporting pipes are connected with a lower side beam pivot of the carriage. The side baffle structure and the door locking structure of the rollover self-dumping semitrailer can be opened and closed by ingeniously utilizing the rollover acting force of the carriage, the reliability is high, additional power sources (such as an oil cylinder and an air cylinder) do not need to be arranged, the manufacturing cost and the maintenance cost are reduced, and meanwhile the oil leakage risk is avoided. Due to the linkage design of the movable side compartment door and the baffle, the unloading process is smoother, manual intervention is not needed, and the problem that tires are prone to being buried by goods during unloading of an existing side-tipping dumper is fundamentally solved.

The invention relates to a piston-cylinder unit. The piston-cylinder unit has a piston motion sensor which is arranged in a transverse hole of a cylinder head having a longitudinal axis. According to the invention, the piston motion sensor is detachably connected to a housing plug through a sensor cable. The housing plug is L-shaped. One leg of the housing plug extends in the transverse hole of the cylinder head, while another leg extends lying externally from the cylinder head. The invention enables the operation of the piston-cylinder unit with housing plugs of different types.The piston-cylinder unit according to the invention finds, for example, use for a work machine, construction machine, agricultural machine, maritime machine, wheel loader, excavator, dumper, crane, forklift or lifting platform.

According to the pure electric underground dumper power assembly suspension structure, a dumper power assembly comprises a traction motor and a gearbox, the gearbox is connected with a dumper frame through a first suspension mechanism, and the traction motor is connected with the dumper frame through a second suspension mechanism; the first suspension mechanism comprises first frame end mounting seats fixed to the inner sides of frame edge beams on the two sides of the gearbox and a first equipment end mounting seat arranged between the first frame end mounting seats on the two sides. The second suspension mechanism comprises second equipment end mounting seats fixed to the two sides of the traction motor respectively and second frame end mounting seats fixed to the inner sides of the two frame edge beams respectively, the second equipment end mounting seats correspond to the second frame end mounting seats, and second vibration reduction assemblies are arranged between the second equipment end mounting seats and the second frame end mounting seats. The mounting seat is simple and reliable in structure, convenient to mount and high in space utilization rate; each supporting point of the power assembly is provided with an anti-vibration pad, vibration can be effectively isolated, and the torsional vibration influence of the power assembly is reduced.

The utility model provides a mining dump truck steering mechanism which comprises a front axle steering assembly and a hydraulic system and further comprises a rear wheel steering assembly arranged on a rear axle, the rear wheel steering assembly comprises a rear steering knuckle and a rear steering driving mechanism, and the rear steering driving mechanism is hinged to the rear steering knuckle. The two ends of the rear axle are connected with the rear knuckle through a steering fork, and a transmission universal shaft in power connection with the rear axle driving shaft and the rear brake drum is arranged in the middle of the steering fork. The rear steering driving mechanism serves as a power source for steering of the rear wheels, the transmission universal shaft penetrating through one end of the steering fork and connected with the rear axle driving shaft through the spline is arranged in the middle of the steering fork, connected with the rear brake drum, of the rear axle, and the steering function is added while transmission is achieved. The rear steering driving mechanism is hinged to the rear steering knuckle, so that steering of the rear wheels is achieved instead of rotation of the rear axle, abrasion of the rear wheels during steering can be greatly reduced, and the service life of tires is prolonged.

The invention provides a four-axle mining dump truck frame which comprises a front axle longitudinal beam, a rear axle longitudinal beam and a cross beam assembly, the front axle longitudinal beam and the rear axle longitudinal beam are arranged in a bilateral symmetry mode, the cross beam assembly is used for connecting the front axle longitudinal beam and the rear axle longitudinal beam, and the cross beam assembly comprises a U-shaped cast beam, a two-axle cross beam assembly, a three-axle cross beam assembly and a four-axle cross beam assembly; the rear axle longitudinal beam comprises a second axle longitudinal beam, a third axle longitudinal beam and a fourth axle longitudinal beam; the second-bridge longitudinal beam and the third-bridge longitudinal beam are fixedly connected through a second-bridge cross beam assembly; the third-bridge longitudinal beam and the fourth-bridge longitudinal beam are fixedly connected through a third-bridge cross beam assembly; the four-bridge cross beam assembly is fixedly connected with the end, away from the three-bridge cross beam assembly, of the four-bridge longitudinal beam. By arranging the four-axle longitudinal beams and the four-axle cross beam assemblies, an installation foundation is provided for achieving the four-axle mining dump truck, all the axle longitudinal beams are fixedly connected into a whole through the cross beam assemblies, operation is easier during production and manufacturing, the truck frame assembling time is saved, the production cycle of all the components is shorter, and the production efficiency of the four-axle truck frame is greatly improved.

A wheel edge driving system of an electric mining dump truck comprises a gearbox and a planet row which is arranged on the periphery of the gearbox and fixed to a driving wheel. The multi-motor input assembly is used for dynamically coupling the three motors, the first gear shifting assembly has a two-gear speed changing function and is connected with the first multi-motor input assembly, the output shaft is used for transmitting power to the planet row, the second gear shifting assembly is assembled on the output shaft, and the output shaft is connected with the input end of the planet row. The output shaft is in transmission connection with the first multi-motor input assembly along with gear shifting of the second gear shifting assembly or is in transmission connection with the first gear shifting assembly along with gear shifting of the first gear shifting assembly. The complex terrain adaptability is improved, the power requirements of various working conditions are met, switching between a low-speed large torque mode and a high-speed energy-saving mode is achieved, and the optimal matching of the dynamic property and economical efficiency of the whole vehicle is achieved. The invention further provides a gear shifting driving method of the wheel edge driving system of the electric mining dump truck and the electric mining dump truck.

The invention discloses a mine road intelligent maintenance system for multi-source sensing of a mining dump truck. The mine road intelligent maintenance system comprises a mine car sensor array, an edge computing unit and an equipment collaboration network, the mine car sensor array, the edge computing unit and the equipment collaborative network are in signal connection in sequence; the mine car sensor array is used for collecting whole car and road data and comprises a load sensor, a six-axis IMU, a laser radar, a binocular vision sensor and a vibration sensor. According to the invention, real-time monitoring and dynamic maintenance of the mine road state are realized, and a manual inspection blind area is effectively eliminated. The accuracy of road degradation identification is improved through multi-dimensional data fusion, and resource waste caused by misjudgment is avoided. And an equipment cooperation mechanism solves the conflict problem of maintenance operation and transportation tasks, and the road use efficiency is remarkably improved. The edge computing architecture reduces the data transmission load, and ensures the stable operation of the system under a complex working condition.

The utility model discloses a brake hydraulic element fault detection system and a mining dump truck. The brake hydraulic element fault detection system comprises an oil tank, a variable pump, a pedal valve, a relay valve, an angle sensor, a controller, a brake and a pressure sensor. The oil tank is used for storing hydraulic oil; the variable pump is connected with the oil tank, serves as a hydraulic system oil source and outputs hydraulic oil outwards; the pedal valve and the relay valve are respectively connected with the variable pump; the pedal valve outputs pressure oil which is proportional to a pedal angle to a pilot port of the relay valve; the angle sensor mounted on the pedal is used for sending the detected angle of the treaded pedal to the controller; the brake is connected with the relay valve, and the relay valve outputs pressure oil proportional to the pressure of the pilot port to the brake; the pressure sensor is electrically connected with the controller and sends the detected pressure of the brake to the controller, and the controller judges whether the pedal valve and the relay valve break down or not by analyzing the angle of the pedal valve and the pressure of the brake.

The invention discloses a four-wheel steering mining dump truck. The four-wheel steering mining dump truck comprises a steering mechanism, a steering hydraulic system, a driving wheel assembly and a frame, the frame is provided with a front axle and a rear axle, the front axle and the rear axle are respectively provided with two driving wheel assemblies, the two driving wheel assemblies of the front axle are connected and mounted on a steering mechanism of the front axle, the two driving wheel assemblies of the rear axle are connected and mounted on a steering mechanism of the rear axle, and a steering wheel of each driving wheel assembly participates in steering; the front axle and the rear axle are respectively provided with an axle support, the frame is provided with a frame support, and the steering mechanism comprises a steering crank, a steering pull rod, a steering arm, a steering cylinder and a steering support; the steering hydraulic system is used for providing pressure oil for the steering cylinder and pushing the telescopic rod to stretch out or retract back. The invention further discloses a steering method of the four-wheel steering mining dump truck. The four-wheel steering electric vehicle has a four-wheel steering function, so that the turning radius of the whole vehicle is smaller, and the vehicle can adapt to a narrower road environment.

We provide an electric dump vehicle that can utilize the space above the battery. [Solution] The electric dump vehicle comprises a vehicle body having a vehicle frame and wheels, a cargo bed positioned on the vehicle frame, a dumping device that moves the cargo bed relative to the vehicle body between a reference position on the vehicle body and a dumping position inclined relative to the vehicle body, a motor that rotates the wheels, and a battery fixed to the vehicle frame that supplies power to the motor. The dumping device comprises an extendable and retractable hydraulic cylinder and a hydraulic drive device that extends and retracts the hydraulic cylinder in order to move the cargo bed relative to the vehicle frame. At least a portion of the battery is positioned below the vehicle frame, and at least a portion of the hydraulic drive device overlaps with the battery in an up-down view and with the vehicle frame in a side view.

To inhibit temperature rise of a hydraulic fluid effectively to prevent seizure of a hydraulic pump.SOLUTION: A hydraulic device 4 includes: a hydraulic cylinder 10; and a hydraulic pressure supply / discharge device 5 which expands or contracts the hydraulic cylinder 10. The hydraulic pressure supply / discharge device has: a bypass oil passage B which is branched from a first oil passage 41 extending from the discharge side of a hydraulic pump 15 to a spool of a switching valve 16 and disposed so that its downstream end returns a hydraulic fluid to an oil tank 17; a bypass valve 19 which may open or close the bypass oil passage; and linkage means which links the spool and the bypass valve to each other. At least a part of the bypass oil passage B is formed in a bypass pipe 18 provided outside of casings 24, 31. The linkage means links the spool and the bypass valve to each other so that the hydraulic fluid discharged from the hydraulic pump flows through the bypass pipe when a switching position of the spool is in a neutral position and the hydraulic fluid discharged from the hydraulic pump does not flow through the bypass pipe when the switching position of the spool is in a lifted position.SELECTED DRAWING: Figure 5

The invention relates to the technical field of engineering resource configuration optimization, in particular to a tunnel construction electric machine sectional type mechanical optimization configuration method, which comprises the steps of determining a charging adaptation value of a charging pile to an electric machine based on the battery capacity of the electric machine and the output power of the charging pile; based on the drilling footage of each cycle and the section area of the tunnel, calculating the total slag removal amount of each cycle of the tunnel; calculating the dumper times per cycle based on the total ballast discharge amount per cycle and the single loading capacity of the dumper; determining a single operation cycle of the dumper based on the transportation distance, the dumper speed and the loading and unloading time; determining the number of the dump trucks based on the single operation cycle; according to the dumper times per cycle and the dumper number, the dumper round-trip times are calculated and determined; the installation position of the charging pile is determined, and the electric machinery is charged in sequence according to the flow rhythm; according to the method, the tunnel muck removal efficiency is effectively improved, and meanwhile, the accuracy of segmented mechanical optimization configuration of the tunnel construction electric machinery is improved.

The utility model discloses a counter-acting force arm for assembling and tightening a dumper thrust rod, which comprises a counter-force plate provided with a counter-force sleeve; the connecting plate is rotationally connected with the counter-force plate through a mounting pin shaft, a pluggable pin shaft is further mounted between the connecting plate and the counter-force plate, and the pluggable pin shaft is used for locking after the counter-force plate rotates in place along the mounting pin shaft; the mounting plate is mounted at one end of the connecting plate, and the mounting plate is used for mounting a tightening gun. According to the counter-acting force arm for assembling and tightening the thrust rod of the dumper, the reliable product quality is ensured, and the noise is reduced; meanwhile, the use requirement of a product with a double-bolt fastening structure can be met, the distance between the counter-force sleeves can be adjusted to be matched with the center distance between the two bolts ranging from 151 mm to 168 mm, and the state of the counter-force arm can be rapidly changed by inserting and pulling out the pin shaft.

The invention relates to an extended-range mining dump truck energy optimization system and method based on deep learning. The system comprises a load prediction module which is used for inputting driving route environment data, equipment state data and transportation working condition data of the mining dump truck into a load demand prediction model based on deep learning to obtain a load demand prediction result; the oil consumption prediction module is used for inputting the load demand prediction result, the historical APU parameters, the energy interaction data and the historical temperature data into an oil consumption prediction model to obtain an oil consumption prediction result; and the energy management module is used for constructing a multi-objective optimization model based on the load demand prediction result and the oil consumption prediction result, and solving through a particle swarm optimization algorithm to obtain an optimal energy distribution strategy. According to the system, load demand prediction and oil consumption prediction are combined, energy distribution is achieved through deep learning and a multi-objective optimization algorithm, oil consumption can be remarkably reduced, the energy utilization efficiency is improved, and energy supply and demand balance under the dynamic working condition is achieved.

The utility model discloses a front overhang longitudinal pushing support, an off-highway mining dump truck frame and an off-highway mining dump truck, the front overhang longitudinal pushing support comprises a pair of main vertical plates, a pair of front vertical plates, a pair of front vertical plates, a pair of rear vertical plates and a pair of rear vertical plates, the top plate is arranged at the tops of the pair of main vertical plates and is used for connecting the pair of main vertical plates; and the fixing pipe is arranged between the pair of main vertical plates and is used for mounting a thrust rod. Through reasonable structural design, borne force can be effectively dispersed, force from a front suspension part is effectively transmitted to the frame longitudinal beam, the main vertical plate is supported through the fixing pipe, so that the front suspension longitudinal thrust support has good structural strength and torsional rigidity, the fixing reliability of a front thrust rod can be guaranteed, and the front thrust rod is prevented from being damaged. Therefore, the front thrust rod can accurately exert the function of controlling the front overhang movement of the vehicle.

The invention relates to the technical field of mining transport vehicles, in particular to a hybrid wide-body dumper power system and a control method. The power system comprises an engine, a front wheel auxiliary driving system and a rear wheel driving system; the front wheel auxiliary driving system comprises a front driving motor and a front driving wheel, the engine is connected with the front driving motor, and the front driving motor drives the front driving wheel to rotate; the rear wheel driving system comprises a generator, a rear driving motor, a rear driving wheel and a power battery, the engine is connected with the generator, the generator is connected with the rear driving motor, the rear driving motor drives the rear driving wheel to rotate, and the power battery is connected with the generator and used for supplying power to the front driving motor and the rear driving motor. According to the invention, the dynamic property and trafficability of the vehicle are enhanced, the fuel cost is reduced, the pollutant emission is reduced, and the transportation requirements of complex engineering sites such as mines and the like are better met.

A mine dump truck wet disc brake hydraulic system, including main control valve, one end of main control valve is connected pressure oil source, the other end is connected front brake system and middle and rear brake system, front brake system includes brake pedal, front axle proportional control valve group, front axle brake valve group and front brake cylinder, middle and rear brake system includes brake pedal, slow running valve, middle and rear axle brake valve, rear axle proportional valve group, relay valve group, rear axle brake cylinder and middle axle brake cylinder, the utility model discloses a mine dump truck wet disc brake hydraulic system can realize manual operation brake and line control remote brake function, reaches unmanned operation's requirement, is used for unmanned vehicle or auxiliary driving, and in order to adapt to the distance of middle and rear axle of three axle vehicle and the distance of main brake valve group is longer, two relay valve groups are added, brake corresponding speed is improved, faster brake response is realized, makes travel more safe.

The utility model relates to the field of transport vehicles, in particular to a dumper. A frame and a cargo compartment of the dumper are connected through a hinge device, the hinge device comprises an overturning seat arranged on the frame and an overturning support arranged on the cargo compartment and corresponding to the overturning seat, the overturning seat is provided with a shaft sleeve, the shaft sleeve is provided with a first oil injection hole, and the first oil injection hole is provided with a second oil injection hole. Lubricating oil can be injected into the shaft sleeve through the first oil injection hole, the overturning base is connected with the overturning support through a pin shaft, and the pin shaft penetrates through the interior of the shaft sleeve. The turnover seat of the connecting device between the frame and the cargo compartment of the dumper is provided with the first oil injection hole, and lubricating oil can be injected into the shaft sleeve of the turnover seat through the first oil injection hole, so that the friction between the pin shaft and the shaft sleeve is reduced, and the part loss of a hinge device is reduced.

According to the lifting speed regulating system of the mining dump truck, two oil outlets of a lifting pump are connected with oil inlets of a first main valve element and a second main valve element respectively, an oil outlet of the first main valve element is connected to a rodless cavity of the lifting system, and an oil outlet of the second main valve element is connected to a rod cavity of the lifting system. The control end of the first main valve element and the control end of the second main valve element are connected to two working oil ports of the lifting proportional valve respectively. A pilot oil way communicated with the lifting proportional valve is divided into a first pilot sub-oil way connected to the first sub-oil way and a second pilot sub-oil way connected to the second sub-oil way, a bypass oil way connected with the oil return tank assembly is arranged on the first pilot sub-oil way, and a bypass valve is arranged on the bypass oil way. An oil inlet of the first main oil way control valve is connected with the first sub oil way, an oil outlet of the first main oil way control valve is connected with the oil return tank assembly, one control end of the first main oil way control valve is connected with the first sub oil way, and the other control end of the first main oil way control valve is connected to the first pilot sub oil way after passing through the first one-way throttle valve. The utility model further relates to a mining dump truck.

The utility model relates to the technical field of mining dump trucks, in particular to a mining dump truck rear door bracket device and a mining dump truck, the mining dump truck rear door bracket device comprises a bracket body, the bracket body is used for being installed inside a container of the dump truck, the bracket body comprises a baffle body, and the baffle body comprises a first baffle. The first baffle is connected with the second baffle, and a bracket included angle is formed between the second baffle and the first baffle. The rear door fixing structure has the beneficial effects that after the mining dump truck loads materials and the rear door of the container is closed, the bracket body not only can play a role in blocking the materials, but also can play a role in supporting stress of the rear door, the stress of the rear door is relieved, the service life of the rear door fixing structure is prolonged, the vehicle failure rate is reduced, and the maintenance cost is saved.

The utility model discloses an off-highway dumper drive-by-wire brake spraying system and an off-highway dumper, and the off-highway dumper drive-by-wire brake spraying system comprises a gas path consisting of a gas tank, a one-way valve, a pressure reducing valve, a first electric ball valve and a water spraying tank which are connected in sequence, the water path consists of the water spraying tank, a filter, a second electric ball valve, an electromagnetic valve and a high-precision nozzle which are connected in sequence; the system further comprises an integrated electronic control unit, a controller local area network bus and a temperature sensor; the temperature sensor is in communication connection with the integrated electronic control unit through the controller local area network bus. The integrated electronic control unit is in communication connection with the first electric ball valve, the second electric ball valve and the electromagnetic valve. The high-precision nozzle and the temperature sensor are arranged at the positions right opposite to the friction face of the brake drum. The temperature of the brake drum is obtained in real time, the spraying water amount and the spraying time of the nozzle are controlled, the spraying opportunity is more accurate, and the water spraying amount meets the actual requirement.

The utility model discloses a kind of integrated structure of vice driver seat and storage box, cab and off-highway dump truck, comprising: cushion assembly, including cushion mounting bracket, cushion, cushion mounting bracket is connected with cushion, and cushion mounting bracket, cushion is connected with cab rear wall respectively;Storage box assembly, including seat pad, rear bracket, multiple mounting brackets and front vertical plate, rear bracket is detachably mounted on cab rear wall, front vertical plate is detachably mounted on vehicle body floor, front vertical plate is connected with rear bracket through multiple mounting brackets and forms frame structure, the inside of frame structure is storage space, top forms seat support surface, seat pad is placed on seat support surface and is cooperated with cushion assembly to constitute seat structure;Safety belt device, including lock catch and safety belt assembly, lock catch and safety belt assembly are mounted on cab rear wall.The utility model is based on meeting customer basic operation and configuration requirement, optimizes cab space utilization, improves operation safety and convenience.

The embodiment of the invention discloses a hinged dumper weighing method and device, a storage medium and a program product. Wherein the hinged dump truck is provided with a weighing oil cylinder, a pressure sensor and a tilt angle sensor; the hinged dump truck weighing method comprises the steps that the pressure value of an oil cylinder of a hinged dump truck is detected through a pressure sensor; the angle of a container on the articulated dump truck is measured through the tilt angle sensor; and according to the pressure value, the cargo tank angle, the oil cylinder sectional area on the hinged type dumper and the gravitational acceleration, the cargo tank weighing value on the hinged type dumper is determined. Weighing of the hinged dump truck is achieved through the pressure sensor and the tilt angle sensor, the weighing cost can be reduced, and the weighing accuracy and convenience are improved.

The utility model discloses a mining dump truck braking circuit, which relates to the technical field of equipment braking and comprises a power assembly, a power supply assembly and a power failure detector, the power supply assembly is provided with a high-voltage battery, the positive electrode and the negative electrode of the high-voltage battery are electrically connected with a positive electrode confluence busbar and a negative electrode confluence busbar respectively, and a first converter and a second converter are connected between the positive electrode confluence busbar and the negative electrode confluence busbar in parallel. The three-phase output end of the first converter and the three-phase output end of the second converter are electrically connected with the three-phase input end of the power assembly, and the three-phase output end of the second converter is provided with a contactor. The power-off detector is arranged at the three-phase output end of the first converter. In the using process, the power failure detector is used for detecting whether the three-phase output end of the first converter supplies power or not so as to select to control the contactor to be disconnected or connected, the problem that the mining dump truck cannot be braked when a single-set three-phase voltage output loop breaks down is solved, and the safety of the mining dump truck is guaranteed.

1. Name of the designed product: mounting bracket (for mine wide-body dump truck). 2. Use of the designed product: used for assembling primary and secondary fuel filters and fuel electrically controlled reversing valve. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The utility model discloses an antenna support and an unmanned off-highway dumper. The antenna support comprises a mounting plate, two pairs of mounting seats, a pair of front inclined supporting rods, a pair of rear inclined supporting rods and a pair of rear supporting rods. The pair of front inclined supporting rods, the pair of rear inclined supporting rods and the pair of rear supporting rods are in one-to-one correspondence and are splayed, the front inclined supporting rods and the rear inclined supporting rods incline forwards, the large opening ends of the pair of front inclined supporting rods are connected with the two ends, close to the length direction, of the bottom of the mounting plate respectively, and the small opening ends of the pair of front inclined supporting rods are connected with the pair of mounting bases close to the mounting plate respectively; the small opening ends of the pair of rear supporting rods are connected with the two sides of the middle of the bottom of the mounting plate respectively, the large opening ends of the pair of rear supporting rods are connected with the other pair of mounting bases respectively, the top ends of the rear inclined supporting rods are connected with the positions, close to the tops, of the corresponding front inclined supporting rods, and the bottom ends of the rear inclined supporting rods are connected with the lower portions of the corresponding rear supporting rods. Compared with a bending steel plate in the prior art, the bending steel plate has the advantages of being light in weight, high in overall torsional strength, not prone to breakage and good in reliability.

The present application relates to the technical fields of hydraulic lifting of dump truck, in particular to a front hydraulic lifting device of heavy-duty dump truck. The device comprises two groups of frames and a carriage. One end of each frame is fixedly connected with a front fixed plate. A first lifting bracket is arranged on the front fixed plate. A lifting hydraulic cylinder is rotatably connected to the first lifting bracket. An oil tank is arranged on the front fixed plate. An oil pipe is in communication between the oil tank and the lifting hydraulic cylinder. A second lifting bracket is fixedly connected to the carriage. The oil in the oil tank is pressurized and then enters the lifting hydraulic cylinder, so that the end of the telescopic connecting rod drives the sleeve to rise. The first hinged seat at the bottom of the carriage drives the end of the two groups of supporting shafts to rise, pulls the supporting assembly, and is engaged with the rack through the limiting mechanism, so that the two groups of supporting shafts produce auxiliary support to the carriage during the movement of the supporting assembly, effectively reducing the stress of the telescopic connecting rod and effectively improving the stability of the carriage lifting.

This utility model discloses a floating seal seat device, a steering axle, and a mining dump truck. The left floating seal seat is detachably connected to the left fixed component; the right floating seal seat is detachably connected to the right fixed component, forming an installation cavity between the right and left floating seal seats. The floating seal is located within the installation cavity, with its left side inside the left floating seal seat and its right side inside the right floating seal seat. The axial pressing and positioning of the floating seals are achieved through the seat cavities of the left and right floating seal seats, sealing both seats. An adjusting component is disposed between the left fixed component and the left floating seal seat, allowing axial movement of the left floating seal seat to adjust the floating seal gap. Therefore, this utility model proposes a floating seal seat device that is easy to adjust the floating seal gap, has low manufacturing cost, and is replaceable.