47 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.

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 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.

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 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.

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.

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).

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.

1. Name of the Design Product: Excavating Loader (BL35-12). 2. Use of the Design Product: For loading and transporting materials. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1. 5. The bottom surface of this design product is a part that is not easily seen or not seen during use, so the bottom view is omitted; the top surface of this design product is a part that is not easily seen or not seen during use, so the top view is omitted.

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.

The present invention discloses a hydraulic oil circuit sharing system for an excavator loader and an excavator loader. The hydraulic oil circuit sharing system for the excavator loader includes: a control module, a handle switching module, an end tool switching module, a main valve module, and a switching switch; the control module is used to convert a handle operation signal into an oil quantity control signal; the main valve module is connected to the end tool switching module oil circuit; the main valve module is provided with a first oil circuit and a second oil circuit, and the main valve module is used to control the flow of working oil input into the end tool switching module; the end tool switching module includes a loading end auxiliary tool, an excavating end auxiliary tool, and a switching valve block, and the two auxiliary tools share the first oil circuit and the second oil circuit; the switching switch is connected between the handle switching module and a power supply; the control module is used to receive handle operation signals of different operating handles in the handle switching module according to the connection and disconnection between the control module and the power supply. The present invention reduces the space occupied by the internal oil circuit of the loader excavator and is low in cost.

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.