67 results about "Backhoe loader" patented technology

The invention relates to a lock system which is manufactured for the assembly of the ground engaging wear parts in multi-purpose backhoe loaders and developed for use for different purposes (mining, highway and dam projects, road construction, maintenance and repair, water canal construction, decoupage, soil excavation, loading and spreading, etc.) in the construction and building sector, wherein it enables impact-free assembly of ground engaging wear parts of construction equipment.

1. The name of the product under this design: Backhoe Loader (4CX). 2. Purpose of the product of this design: an excavator loader with integrated excavation and loading functions. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1. 5. The top surface of the product with this design has been shown in each three-dimensional diagram, and the top view has been omitted; the bottom surface of the product with this design is a part that is not easy to see or cannot be seen when in use, and the top view has been omitted.

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 backhoe loaders, in particular to a supporting and limiting mechanism of a wheel type backhoe loader, which increases the supporting area of a machine body, ensures the stability during construction, improves the safety and is convenient to change working ends. Comprising a machine body, position adjusting assemblies are installed at the left end and the right end of the machine body, supporting assemblies are installed on the position adjusting assemblies, and each position adjusting assembly comprises a rotating rod, two bevel gears, a hydraulic motor, two sets of driven bevel gears, two threaded rods, two transverse telescopic arms, two sets of limiting plates and two sets of fixing bases; a seat plate is mounted at the top of the machine body through a steering assembly, and a damping assembly is mounted at the bottom of the seat plate.

This invention relates to an automatic retraction system for armored excavator loader (backhoe loader) vehicles, which allows the operator to retract the front boom, rear boom, stick, bucket, rotation mechanism, and stabilizing legs with a single button once the digging operation is completed and / or in emergency situations.

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 invention belongs to the technical field of backhoe loaders, and discloses a swing oil cylinder of a backhoe loader, which comprises a cylinder body serving as a main body bearing structure of the swing oil cylinder and providing an accommodating space for internal hydraulic oil; the piston rod is connected to the middle of the cylinder body, reciprocates under the action of hydraulic oil and converts hydraulic energy into mechanical energy; the two oil ports are connected to the outer side of the cylinder body and are used as channels for hydraulic oil to enter and exit from the cylinder body; according to the swing oil cylinder of the backhoe loader, through cooperative operation of magnetic attraction and a mechanical structure, the sealing performance is remarkably improved, the anti-permeation sealing ring can be comprehensively extruded, a multi-layer sealing protection system is formed, in the operation process, the sealing performance of the swing oil cylinder is greatly improved, and the service life of the swing oil cylinder is prolonged. Tiny self-movement is formed through magnetic attraction, so that hydraulic oil leakage is effectively prevented, normal operation of equipment is guaranteed, and faults and pollution problems caused by leakage are reduced.

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 utility model discloses a fuel and electric energy dual-energy driving system and a backhoe loader thereof, which belong to the technical field of vehicle engineering, and the fuel and electric energy dual-energy driving system comprises a power battery, a distribution box, a walking motor, a walking motor controller, a generator, a generator controller and a fuel engine, the walking motor drives the axle transmission shaft to rotate through the transfer case, the generator controller is electrically connected with the generator, and the generator is in driving connection with the fuel engine. The backhoe loader comprises the fuel and electric energy dual-energy driving system, and a hydraulic system of the backhoe loader is connected with an oil pump. Under the allocation of the distribution box, the power battery can be freely and flexibly matched with a power generation system formed by the fuel engine and the generator to provide power output, the power output is diversified, the problems of no charging and endurance time anxiety are solved, the fuel oil consumption is low, the use cost is reduced, the high-grade emission requirement can be met more easily, and the environment-friendly effect is achieved.

The invention provides an accelerator control method and device of a backhoe loader, and relates to the technical field of backhoe loaders. The method comprises the steps that in response to a received operation instruction for the loader-digger, the operation intention of the operation instruction is recognized according to the operation instruction, and the operation intention comprises digging or loading; an accelerator control mode corresponding to the operation intention is determined, the accelerator control mode is adopted to control an engine in the backhoe loader, and the accelerator control mode comprises a constant rotating speed control mode or a constant torque control mode. The operation intention of the driver is automatically recognized according to the operation signal of the driver, the corresponding accelerator control mode is accurately switched, the operation mode of operation is matched with the accelerator mode, and the dynamic property and economical efficiency of driving of the loader-digger are guaranteed.

The present disclosure relates to a backhoe loader energy recovery and reuse system and a control method thereof, and a backhoe loader, wherein the system comprises: an actuator, configured to drive a working device to perform an action with hydraulic oil as a medium, and having a first cavity and a second cavity; a reversing valve, having a first working oil port communicated with the first cavity and a second working oil port communicated with the second cavity, the reversing valve being configured to reverse the actuator; a stabilizing valve group, having a first oil port, a second oil port, a third oil port and a fourth oil port, the first oil port and the second oil port being communicated with the first cavity and the second cavity, respectively, and the third oil port being communicated with an oil tank; and an energy storage part, communicated with the fourth oil port and configured to store hydraulic energy; wherein the first oil port and the third oil port have a first communication state therebetween, in which the hydraulic oil in the first cavity can enter the oil tank; the second oil port and the fourth oil port can be selectively connected or disconnected, and in a connected state, the second cavity is communicated with the energy storage part.

The utility model relates to the field of backhoe loader vehicle throttle control, and discloses a backhoe loader throttle control switching circuit, which comprises a key electric power supply, a starting electric power supply, an engine ECU (Electronic Control Unit) controller, a normally open relay and a display instrument. Wherein the key electric power supply is connected with the engine ECU controller in parallel and is electrically connected with the normally open relay, and the display instrument is connected to the normally open relay. The engine ECU controller is further electrically connected with the loading pedal electronic accelerator and the digging knob fixed accelerator. According to the design, operation is easy and convenient, the speed of the loader and the excavator can be controlled through the electric signal voltage value, and meanwhile starting and running of the engine are effectively controlled through connection of the engine ECU controller, the key electric power source and the starting electric power source. In addition, the display instrument is immediately electrified after the engine is started, the convenience of an operator is improved, and necessary information related to the running state of the engine can be provided through electrical connection between the engine ECU controller and the display instrument.

The utility model provides a tool device for a hose fixing seat of a cab of a backhoe loader. The tool device comprises a base, a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate. During welding, a workpiece only needs to be placed on the tool device, so that the effect that the workpiece does not need to be held by hands is achieved, and the problem of low manual welding efficiency is solved. By adopting the tool device provided by the utility model, the welding operation is simple and safe, and the efficiency is improved. Practice proves that compared with a welding mode of manually measuring the size, the tool device is high in positioning precision and good in welding quality, and the welding efficiency of a single piece is improved.

This invention relates to an automatic retraction system for armored excavator loader (backhoe loader) vehicles, which allows the operator to retract the front boom, rear boom, stick, bucket, rotation mechanism, and stabilizing legs with a single button once the digging operation is completed and / or in emergency situations.

The utility model discloses a novel cleaning type oil tank for a wheel type two-end-busy backhoe loader, which relates to the technical field of loaders and particularly comprises an oil tank body, and a filtering structure and a cooling structure are arranged at the top end of an inner cavity of the oil tank body from top to bottom. A tank cover is fixed to the top of an inner cavity of the oil tank body, an oil supplementing pipe and an oil returning pipe are arranged on the tank cover, an oil outlet pipe is fixed to one side of the oil tank body, and the bottom end of the oil outlet pipe extends to the bottom end of the inner cavity of the oil tank body. The cooling structure comprises a first cooling plate fixed to one end of an inner cavity of the oil tank body and a second cooling plate fixed to the other end of the inner cavity of the oil tank body. Through the arrangement of the rotating motor, the gear and the gear ring, the rotating motor can drive the filtering structure to rotate, hydraulic oil among impurities intercepted by the filtering structure can be rapidly separated from the impurities, rapid recovery of the hydraulic oil among the impurities is achieved, loss of the hydraulic oil is reduced, and the hydraulic oil filtering efficiency can be improved through rotation of the filtering structure.

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 utility model discloses a machining clamp for a torque converter shell of a backhoe loader. The machining clamp comprises a clamp body, a positioning mandrel, a stud, a nut, a supporting stud, an inner pressing plate, a first screw, a step nut, an outer pressing plate, a first cushion block, a second cushion block, a second screw, an outer stud and a positioning stud. The positioning mandrel is fixed at the upper end of the clamp body through four screws (1); the two cushion blocks (1) and the cushion block (2) are respectively fixed at the upper end of the clamp body through a screw (2); the stud is screwed into the threaded hole of the positioning mandrel and is fixed by a nut; the supporting stud, the outer stud and the positioning stud are screwed into threaded holes of the clamp body and fixed through nuts. The inner pressing plate penetrates into the stud through the U-shaped groove and is fixed by the step nut; the outer pressing plate penetrates into the outer stud through the U-shaped groove and is fixed through the step nut. The device is simple and compact in structure, low in manufacturing cost, high in machining precision of the torque converter shell of the backhoe loader and reliable to use, and solves the problem that the machining size of the torque converter shell in the prior art is out of tolerance.

The hydrostatic transmission structure comprises a walking motor, an engine, a walking pump, a transfer case and a walking driving device, the engine, the walking pump, the transfer case and the walking motor are sequentially arranged from left to right with the engine as the starting point, the left side of the walking pump is connected with the output end of the engine, and the right side of the walking pump is connected with the output end of the transfer case. The walking pump is connected with the walking motor through a connecting pipeline, the walking motor is connected with an input shaft on the right side of the transfer case, the walking driving device is located below the walking motor and connected with the transfer case, mechanical energy of an engine can be converted into hydraulic energy through the walking pump, and the hydraulic energy is converted into mechanical energy through the walking motor. And finally, the mechanical energy is transmitted to the walking driving device by virtue of the transfer case, so that the transmission efficiency of the backhoe loader can be improved, and the working efficiency of walking, excavating and loading is further improved.

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.

1. The article is a backhoe loader, and the feature of the design is the shape of the article which is best illustrated in FIG. 1.1. Bottom view is omitted since the article is a heavy product. FIG. 1.1: Front perspective view, FIG. 1.2: Rear perspective view, FIG. 1.3: Front view, FIG. 1.4: Back view, FIG. 1.5: Top view, FIG. 1.6: Right view, FIG. 1.7: Left view.; 2. The article is a console for construction machinery and the feature of the design is the shape of the article which is best illustrated in FIG. 2.1. The dashed lines illustrate the environmental structure and do not form part of the claimed design. The dash-dotted lines indicate the boundary of the claimed design and form no part thereof. FIG. 2.1: Front perspective view, FIG. 2.2: Rear perspective view, FIG. 2.3: Front view, FIG. 2.4: Back view, FIG. 2.5: Top view, FIG. 2.6: Bottom view, FIG. 2.7: Right view, FIG. 2.8: Left view, FIG. 2.9: Cross-sectional view without inner structure taken along line A-A in FIG. 2.3; 3. The article is a backhoe loader, and the feature of the design is the shape of the article which is best illustrated in FIG. 3.1. The dashed lines illustrate the environmental structure and do not form part of the claimed design. Bottom view is omitted since the article is a heavy product. FIG. 3.1: Front perspective view, FIG. 3.2: Rear perspective view, FIG. 3.3: Front view, FIG. 3.4: Back view, FIG. 3.5: Top view, FIG. 3.6: Right view, FIG. 3.7: Left view, FIG. 3.8: Cross-sectional view without inner structure taken along line A-A in FIG. 3.3, FIG. 3.9: Cross-sectional view without inner structure taken along line B-B in FIG. 3.3, FIG. 3.10: Cross-sectional view without inner structure taken along line C-C in FIG. 3.5, FIG. 3.11: Partial enlarged view of section D-E in FIG. 3.4, FIG. 3.12: Partial enlarged view of section F-G in FIG. 3.7, FIG. 3.13: Partial enlarged view of section H-I in FIG. 3.8, FIG. 3.14: Partial enlarged view of section J-K in FIG. 3.9, FIG. 3.15: Partial enlarged view of section L-M in FIG. 3.10.

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.

The utility model relates to the technical field of engineering machinery control, in particular to a loading control valve for a backhoe loader, which comprises a valve body, an oil inlet path and an oil return path are arranged in the valve body, and the valve body sequentially comprises an end cover, a rotating bucket valve core, a movable arm valve core, an oil pump valve core A and an oil pump valve core B which are connected in series into a whole in a sealing mode. The rotating bucket valve element is a three-position six-way manual valve, and the movable arm valve element is a four-position six-way manual valve. The oil pump valve element A is provided with an oil pump connector A and an oil tank connector, and the oil pump valve element B is provided with an oil pump connector B; pilot-operated unloading valves communicated between the oil inlet path and the oil return path are arranged in the oil pump valve core A and the oil pump valve core B; oil inlets of the rotating bucket valve core and the movable arm valve core are provided with one-way valves A and are communicated with an oil pump interface A and an oil pump interface B through oil inlet paths, and oil outlets are communicated with an oil tank interface through oil return paths, so that actions of the bucket are accelerated by communicating double pumps, and the working efficiency is improved.

The utility model relates to the field of backhoe loader supporting leg control, and discloses a backhoe loader supporting leg folding and unfolding control circuit which comprises a frequently-used electric power supply, a starting electric power supply and a device electric power supply, and the frequently-used electric power supply is connected with a first normally-closed relay and a second normally-closed relay in parallel. The first normally-closed relay and the second normally-closed relay are electrically connected to the controller, a supporting leg placing inductive switch and a supporting leg retracting inductive switch are connected to the starting electric power source in parallel, a first normally-open relay and a second normally-open relay are connected to the device electric power source in parallel, and the first normally-open relay is electrically connected with a supporting leg placing electromagnetic valve. And the second normally open relay is electrically connected with a landing leg retracting electromagnetic valve. The device is easy to operate, the supporting legs can be automatically folded and unfolded, the operation burden of personnel on the vehicle is relieved, and the operation safety is improved. Meanwhile, the system has abundant functions and can meet diversified requirements of modern engineering construction.

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.

A backhoe 100 comprising a front chassis 104 with a loading assembly 114 and a rear chassis 106 pivotally connected to the front chassis by a pin lock assembly 116 for articulated steering. A rotatable operator workstation 112 is position on the rear chassis inside a slewable bearing mounted cabin 110 rotatable in both clockwise and counterclockwise directions. Articulated steering and control of the loading assembly is enabled from the operator workstation. The loading assembly may comprise a loader arm (fig.3B, 126), a lift cylinder (fig.3B, 128), a shovel (fig.3B, 130), shovel links (fig.3B, 132) and a tilt cylinder (fig.3B, 134). The rear chassis may comprise an excavator arm (fig.3B, 138). The pin lock assembly may comprise a steering cylinder (fig.3B, 156) and an oscillation cylinder (fig.3B, 158).