31 results about "Backhoe loader" patented technology

The utility model relates to the technical field of engineering machinery, in particular to a supporting leg device and a backhoe loader. The supporting leg device comprises a sleeve, at least one fixing piece, at least one driving piece and a plurality of wear-resisting pads, and the fixing pieces are used for being connected to the outer pipe. The wear-resistant pad is arranged in the mounting hole of the outer pipe, and part of the wear-resistant pad extends out of the mounting hole. The sleeve is arranged on the outer pipe in a sleeving mode, a plurality of abutting parts are arranged on the inner wall of the sleeve, and the driving piece is correspondingly connected with the fixing piece and the sleeve. The driving piece drives the sleeve to move relative to the fixing piece, so that part of the abutting part abuts against the extending abrasion-resistant pad, and the abrasion-resistant pad is pushed to move towards the inner pipe. According to the supporting leg device and the backhoe loader, the frequency of replacing the wear-resisting pad is reduced, and operation is convenient.

The invention discloses a driving position reversing system for a backhoe loader. The driving position reversing system comprises a seat, a steering wheel and a controller. The steering wheel is arranged behind the cab front gear through the adjusting mechanism; a loading position sensor and an excavating position sensor are correspondingly arranged at a loading driving position and an excavating driving position in the cab respectively, and a sensing plate is arranged at the bottom of a seat; when a loading driving position needs to be switched to an excavating driving position, the controller firstly controls the adjusting mechanism to enable the steering wheel to be far away from the seat; then, the seat is controlled to steer, and when the sensing plate moves from the loading position sensor to the excavating position sensor, the seat stops rotating; when the excavation driving position needs to be switched to the loading driving position, the controller firstly controls the seat to turn, and when the induction plate moves to the loading position sensor from the excavation position sensor, the seat stops rotating; controlling the adjusting mechanism to enable the steering wheel to be located at the set position of the loading driving mode; one-key adjustment of the driving position is achieved, and the operation comfort and the driving experience feeling of a driver are improved.

The utility model relates to the technical field of engineering machinery control, in particular to an excavation main control valve for a backhoe loader, which comprises a valve body with a hydraulic channel, and the valve body sequentially comprises an oil inlet joint, an excavation joint, a support leg joint and a tail joint which are hermetically connected in series into a whole; the excavating unit and the supporting leg unit are three-position six-way manual valves, and an electromagnetic valve is arranged on the tail unit; the number of the excavating units is four, and the number of the supporting leg units is two. Wherein the oil inlet connector is provided with an oil pump connector communicated with the hydraulic channel; the tail connector is further provided with an X connector and an oil tank connector which are communicated with the hydraulic channel; pressure regulating assemblies A used for limiting and stabilizing pressure are arranged between the hydraulic channel and the opening A and the opening B of the excavation unit, and each pressure regulating assembly A comprises an oil supplementing one-way valve A and an overload overflow valve A which are connected into a whole in parallel; in the using process, the excavating unit and the supporting rod unit complete hydraulic oil circulation through the hydraulic channel; oil pressure adjustment is conducted through the pressure adjusting assembly A, it is guaranteed that excavation movement is conducted rapidly and stably, and unified specification production is facilitated.

A working machine, which may be a backhoe loader. has a body, a ground-engaging propulsion structure 16, an operator station 36 and an operator seat 19 moveable between a first position and a second p

1. The name of the design product: excavator cab (BL90-25). 2. The use of the design product: cab for loader. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. The rear view is omitted because the part of the design product is not easy to see or cannot be seen during use; the top view is omitted because the part of the design product is not easy to see or cannot be seen during use.

The utility model relates to the technical field of engineering machines, in particular to a supporting leg structure and a backhoe loader. The supporting leg structure comprises a cylinder barrel, a piston rod, a first air bag, a second air bag and an air pressure assembly. The cylinder barrel is used for being connected with a vehicle body. A first air bag and a second air bag are arranged on the two sides of the piston rod respectively. The air pressure assembly controls the first airbag to inflate and the second airbag to exhaust so as to drive the piston rod to move away from the cylinder barrel. The air pressure assembly controls the second airbag to inflate and the first airbag to exhaust so as to drive the piston rod to move towards the cylinder barrel. According to the supporting leg structure and the backhoe loader, the supporting leg structure can bear acting force in the horizontal direction, the problems of sealing ring damage and hydraulic oil leakage are solved, and the reliability of the supporting leg structure is improved.

The utility model discloses an oil storage and suction device of a gearbox of a backhoe loader. A sealing box is welded at the upper end of a heightening frame; the overflow hole joint is inserted into and welded with an oil overflow hole formed in the left upper side of the sealing box; the oil inlet connector is inserted into and welded with an oil inlet formed in the top of the sealing box; an oil outlet joint is inserted into and welded with an oil outlet in the right lower side of the sealing box, the right end of the oil outlet joint is fixed with the left end of a transparent hose through a hose clamp, and the right end of the transparent hose is fixed with the left end of an oil suction pipe joint through a hose clamp; the outer circle of the oil suction pipe connector is connected with a fixing plate with four bolt holes in a welded mode, and the fixing plate is locked on the box body through four bolts and a gasket in the working process. And the O-shaped rubber ring is arranged on a sealing groove of an inner cavity at the right end of the oil suction pipe joint. The test device is simple and compact in structure, convenient to operate and reliable to use, and can prevent transmission oil in the oil tank from being polluted due to the contact between the transmission oil in the oil tank and the outer surfaces of the box body and the box cover casting when the gearbox of the backhoe loader simulates the bench test of the real use condition of the whole machine.

The invention discloses an excavation end steering system of a backhoe loader and a control method. The system comprises an excavation end steering control component, an excavation end oil pumping branch and an excavation end oil return branch. If the vehicle-mounted controller receives a left steering signal output by the excavation end steering control component, the vehicle-mounted controller controls an excavation end oil pumping branch to be communicated with a left steering oil supply path and controls an excavation end oil return branch to be communicated with a right steering oil supply path; and if the vehicle-mounted controller receives a right steering signal output by the excavation end steering control component, the vehicle-mounted controller controls the excavation end oil pumping branch to be communicated with the right steering oil supply path and controls the excavation end oil return branch to be communicated with the left steering oil supply path. The excavating end steering system is additionally arranged on an existing excavating loader, the moving direction of the excavating loader can be directly controlled at the excavating end when the excavating end works, a driver does not need to operate a steering wheel on the back, and convenience and safety are achieved.

The present disclosure relates to a method for controlling a backhoe loader and a backhoe loader, and relates to the field of engineering machinery. The method for controlling a backhoe loader includes: setting a power upper threshold P_0 for a variable displacement pump of the backhoe loader according to an operating mode of the backhoe loader; where the backhoe loader includes an engine, the variable displacement pump, a traveling system, a loading operation system, and a digging operation system; the operating mode includes: a traveling mode, a loading operation mode, and a digging operation mode; and adjusting the power upper threshold P_0 of the variable displacement pump according to an actual load of the backhoe loader in a current operating mode. In the technical solutions, the power upper thresholds P_0 are different in different operating modes. Power of the variable displacement pump is adjusted in real time.

The application provides a flat pushing loading hydraulic control system and method of a positive shovel excavator and the positive shovel excavator. The flat pushing loading hydraulic control system of the positive shovel excavator comprises a detection module for detecting a target parameter and sending a target signal; a control module receiving the target signal and judging whether a bucket of the positive shovel excavator is in a working node of flat pushing loading based on the target signal; and an overflow valve group in communication with a rodless cavity of a boom cylinder of the positive shovel excavator, wherein the overflow valve group at least comprises high overflow working pressure A and low overflow working pressure B for controlling working pressure of the rodless cavity of the boom cylinder, and system pressure of the positive shovel excavator is C, wherein A≥C>B; wherein when the bucket is in the working node of flat pushing loading, the control module controls the overflow valve group to operate at the low overflow working pressure B, so that when the working pressure of the rodless cavity of the boom cylinder exceeds the low overflow working pressure B, hydraulic oil in the rodless cavity of the boom cylinder overflows, so as to realize automatic falling of the boom.

This utility model discloses a braking system for an excavator loader, comprising a foot brake valve. The P port of the foot brake valve is connected to an accumulator and the outlet of a charging valve. The T port of the foot brake valve is connected to an oil tank. The A port of the foot brake valve is connected to the P1 port of a solenoid directional valve. The T1 port of the solenoid directional valve is also connected to the oil tank. The A1 and B1 ports of the solenoid directional valve are connected to the right rear axle brake and the left rear axle brake, respectively, via a right brake light switch and a left brake light switch. The control terminals a1 and b1 of the solenoid directional valve are connected to one electrode of a power supply. The other electrode of the power supply is connected to terminal n of a three-position switch. Terminals e1 and e2 of the three-position switch are connected to the control terminals a2 and b2 of the solenoid directional valve, respectively. This utility model features low cost, simple mechanism, saves interior space in the cab, is easy to operate, and is convenient and flexible in layout.

This invention discloses a method for real-time adjustment of bucket load force in a multi-link mechanism and an excavator loader. The invention first collects the working status information of the excavator loader using sensors, then calculates the bucket load force using a mathematical model of the multi-link structure of the bucket in a constructed XOY ground coordinate system. Based on the bucket load force, the excavator loader is adjusted and controlled in real time. This invention solves the problem of achieving the optimal path, highest efficiency, and lowest energy consumption in the shortest time during the complex motion of an excavating device, improving the overall operating efficiency, reducing excavation resistance, optimizing the trajectory of the entire machine, and achieving optimal matching.

The utility model provides a hydrostatic transmission structure adopting a rear motor, which comprises a travel motor and a transfer case, the travel motor is positioned on the right side of the transfer case, an input shaft is arranged at the right upper corner of the transfer case, the travel motor is directly connected with the input shaft of the transfer case, the travel motor is changed from a front-mounted type to a rear-mounted type, and the rear-mounted type of the travel motor is changed from the front-mounted type to the rear-mounted type. The arrangement space of the walking pump, the working pump and other related pump structures is reserved, and therefore the problem that the arrangement of the pump and the walking motor in the backhoe loader is limited is solved.

The utility model relates to excavator loader technical field discloses a kind of excavator loader rear axle structure, including oil cylinder cylinder, the oil cylinder cylinder outer wall one side is provided with detection mechanism, the oil cylinder cylinder one end is connected with fixed mechanism, the detection mechanism includes chromatic aberration sensor, the fixed mechanism includes oil cylinder piston rod, the oil cylinder cylinder both ends are provided with oil cylinder piston rod, the oil cylinder cylinder one end inside is provided with chromatic aberration sensor, the oil cylinder piston rod outer wall and located oil cylinder cylinder inside one end is provided with color band, the color band and chromatic aberration sensor between each other cooperate, the oil cylinder piston rod one end is connected with first lock piece, the first lock piece outer wall one side is connected with spherical shell. In the utility model, the position of front axle and rear axle can be detected by the detection mechanism, so that the front axle and rear axle are ensured to be in the state of returning to normal, and the fixed mechanism is further arranged to tighten the threaded connection, to prevent the loosening and falling of the thread.

This invention discloses a bidirectional braking system for a backhoe loader, comprising a gearbox, a loading brake valve, and a brake. The gearbox supplies oil to the loading brake valve and the digging brake valve. Both brake valves are connected to the brake via a selector valve. The backhoe loader has control devices at its two different working ends for controlling whether the two brake valves are open. When the backhoe loader is in loading operation, the selector valve opens the loading brake valve and the brake; when the backhoe loader is in digging operation, the selector valve opens the digging brake valve and the brake. This device enables bidirectional braking of the backhoe loader during both digging and loading operations.

The funnel attachment for a heavy machinery bucket includes a funnel and one or more hydraulic pistons. The funnel may be pivotably coupled to a bucket of a loader. The one or more hydraulic pistons may pivot the funnel between a funnel lifted position and a funnel lowered position. The funnel may be pivoted to the funnel lifted position in order to fill the bucket with material. The funnel may be pivoted to the funnel lowered position to empty the bucket through the funnel. As non-limiting examples, the loader may include a backhoe loader, a front loader, a wheel loader, a skid steer loader, or a track loader and the material may comprise sand, gravel, or soil.

1. The name of the design product: excavator loader (BL90-25). 2. The use of the design product: for excavating and loading work. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The top surface of the design product is not easily visible or invisible during use, and the top view is omitted; the bottom surface of the design product is not easily visible or invisible during use, and the bottom view is omitted.

The invention discloses an integrated control system of a pure electric backhoe loader. The integrated control system comprises a hydraulic pump, a control valve group and a hydraulic oil tank, wherein the output end of the hydraulic pump is connected with a port P of the control valve group, and the input end of the hydraulic pump is connected with the hydraulic oil tank; a port B of the control valve set is connected with a port P of the priority valve, a port CF of the priority valve is connected with a port P of the steering gear, a port LS of the priority valve is connected with a port LS of the steering gear, a port T of the priority valve is connected with the hydraulic oil tank, a port L of the steering gear is connected with a left oil cylinder input end of the steering oil cylinder, and a port C of the steering oil cylinder is connected with a right oil cylinder input end of the steering oil cylinder. And an R port of the steering gear is connected with a right oil cylinder input end of the steering oil cylinder. An existing hydraulic pump of a hydraulic system can be used for supplying oil to a gear shifting system and an axle release system of a transfer case and a differential system of a drive axle, the integration level is high, economical efficiency is good, and one hydraulic oil source can meet different control pressure requirements at the same time.

The utility model discloses a press fitting tool for a return spring of a clutch of a loader-digger. The press fitting tool comprises a double-end stud, a step nut, an open washer, a pressing plate seaming, a nut and a base plate. The lower ends of the double-end studs are respectively screwed into threaded holes formed in the left end and the right end of the base plate and are fixed by nuts; hole sites are arranged at the left end and the right end of the pressing plate welding part and used for sleeving studs during operation, and a cavity is formed in the middle area of the pressing plate welding part and used for sleeving a clutch during operation. The step nut and the open washer are used for assembling and disassembling the pressing plate welding part during operation. The clutch return spring assembly tool is simple and compact in structure, convenient and efficient to use and reliable in assembly quality, and solves the problems that a clutch return spring of a loader-digger in the prior art is tedious to assemble, the number of assembly tools is large, and a check ring is prone to being damaged in the assembly process.

The utility model relates to the technical field of engineering machinery, in particular to a supporting leg device and a backhoe loader. The supporting leg device comprises a sleeve, a plurality of wear-resisting pads, a plurality of driving pieces and a plurality of limiting pieces, the wear-resisting pads are used for being arranged in mounting holes of the outer pipe, and part of the wear-resisting pads extend out of the mounting holes. The sleeve is used for being arranged on the outer pipe in a sleeving mode, and a plurality of inserting grooves and a plurality of inserting holes are formed in the sleeve. And the driving piece is correspondingly inserted into the insertion hole and moves relative to the sleeve so as to push the extending wear-resisting pad to move towards the inner pipe. The limiting piece is correspondingly inserted into the inserting groove and is correspondingly connected with the driving piece in a clamped mode so that the driving piece can be kept at the current position. According to the supporting leg device and the backhoe loader, the gap between the abrasion-resistant pad and the inner pipe is reduced, abrasion of the abrasion-resistant pad is compensated, the frequency of replacing the abrasion-resistant pad is reduced, and operation is convenient.

The utility model discloses a multifunctional oil tank and a backhoe loader, and belongs to the technical field of engineering machinery. The device comprises a box body, the box body is divided into an oil product box, a storage battery box and a cathode switch box through a partition plate and a cathode switch mounting plate, the storage battery box is used for mounting a storage battery, and the cathode switch box is used for mounting a cathode switch; the cathode switch box is provided with a cover plate assembly for protecting the cathode switch; an oil filling port and an oil return filter element mounting cover plate are arranged at the top of the oil tank, an oil filling filter is arranged in the oil filling port, and an oil suction port and an oil return port are formed in the side, away from the negative electrode switch, of the tank body; according to the multifunctional oil tank, a user can configure a key lock by himself / herself, the negative electrode switch is protected from being damaged and being impacted by rainwater, a certain rainproof and anti-collision function is achieved, meanwhile, the pedal assembly of the multifunctional oil tank adopts a stamping part, and compared with an original welding part, the stamping part is high in precision, small in error, low in cost and high in efficiency.

The utility model discloses an axle housing arm of a drive axle of a backhoe loader. The axle housing arm comprises a shaft head, an axle tube, a frame mounting seat, a brake pad mounting seat, a fixed flange plate and a brake pad limiting seat, the brake pad mounting seat is light and thin, and the thickness of the brake pad mounting seat is 16-18 mm; a plurality of sawtooth-shaped recesses are formed in the side, close to a frame mounting seat, of the fixed flange plate in the circumferential direction, the positions of the sawtooth-shaped recesses and the positions of fixed bolt holes formed in the flange are staggered to ensure the connection strength of the fixed bolt holes, and therefore bolt hole bosses are formed in the appearance; four clamping bosses are arranged on the outer circle of the brake pad mounting seat, so that the axle housing arm can be conveniently clamped and positioned during machining; a brake pad limiting seat and an anti-rotating pin hole are arranged in an inner cavity of the brake pad mounting seat, the brake pad limiting seat is provided with three weight reduction notches, and the positions of the weight reduction notches and the position of the anti-rotating pin hole are staggered so as to ensure the strength of the anti-rotating pin hole. The device is simple in structure, light in weight, low in manufacturing cost and safe and reliable in operation.

The utility model discloses a backhoe loader capable of automatically switching modes by rotating a seat, which comprises a loader main body, the loader main body is provided with the seat on a bottom plate in a cab, and the backhoe loader is characterized in that the bottom plate is provided with a rotating cavity matched with the seat, the cross section of the rotating cavity is elliptical, and the seat is arranged in the rotating cavity. A short shaft of the rotating cavity is located on the straight line where operation tools at the two ends of the loader body are located, a rotating self-adjusting structure is arranged in the rotating cavity, and after the seat rotates in place through the rotating self-adjusting structure, the corresponding working modes are automatically switched and adjusted. By means of the rotating self-adjusting structure, when an operator rotates the seat, the functions of adjusting the operation distance and switching the operation modes can be automatically achieved at the same time, the operator can directly conduct operation after rotating the seat, and the use experience of the operator is improved.

1. The name of the design product: excavator loading machine weight (BL90-25). 2. The use of the design product: for increasing the weight of the loading machine, keeping the body balanced. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

A prime mover moves a working machine, excavator or backhoe loader via a transmission. An operator station 18 comprises: a working arm control device 42a,42b; a first speed control input device 40 fo

A working machine comprising: a prime mover; a variable displacement hydraulic pump drivable by the prime mover; a working arm moveable by one or more hydraulic actuators driven by the hydraulic pump and / or an output to a working device; wherein the working machine is operable in a first mode and a second mode, and wherein in the first mode the prime mover is operable to run up to a first maximum operating speed and the hydraulic pump is configured to displace up to a first maximum volume of hydraulic fluid per revolution thereof, and wherein in the second mode the prime mover is operable to run up to a second maximum operating speed lower than the first maximum operating speed and a second maximum pump displacement greater than the first maximum pump displacement.

The utility model discloses a front axle housing of a drive axle of a backhoe loader. The upper sides of steering limiting blocks on the left side and the right side of an axle housing body are each provided with a steering receding groove used for receding a tie rod of the drive axle in the steering process. The axle housing is provided with a plurality of reinforcing ribs; two reinforcing ribs I are connected with the steering knuckle mounting seat and the main reducer mounting flange, and the other two reinforcing ribs I are connected with the steering knuckle mounting seat and the main axle package; the two reinforcing ribs II are connected with the steering knuckle mounting seat, the swing limiting block and the steering oil cylinder mounting seat; one ends of the two reinforcing ribs III are connected to the steering receding groove, and the other ends are connected to the steering oil cylinder mounting seat; and one ends of two reinforcing ribs IV are connected to the steering knuckle mounting seat, and the other ends are connected to the swing shaft mounting seat. The front axle housing of the drive axle of the loader-digger is simple and compact in structure, long in service life and capable of steering, meets the bearing requirement, and solves the problems that the front axle housing of the drive axle of the existing loader-digger is easy to crack at the swing shaft mounting seat and the steering knuckle mounting seat and the arrangement of other parts is influenced by larger space layout of the whole drive axle.