CN206829236U - A kind of wheel loader that can configure walking work tool - Google Patents

A kind of wheel loader that can configure walking work tool Download PDF

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Publication number
CN206829236U
CN206829236U CN201720764542.5U CN201720764542U CN206829236U CN 206829236 U CN206829236 U CN 206829236U CN 201720764542 U CN201720764542 U CN 201720764542U CN 206829236 U CN206829236 U CN 206829236U
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China
Prior art keywords
pump
hydraulic
oil
magnetic valve
configure
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CN201720764542.5U
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Inventor
王庆
张永胜
张云雷
杨海英
任佳璞
侯璐
牛宝君
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Technology Branch of XCMG Engineering Machinery Co Ltd
Science and Technology Branch of XCMG
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Abstract

The utility model announces a kind of wheel loader that can configure walking work tool, belongs to technical field of engineering machinery.Engine is provided with two working curves, standard working curve and facility pattern curve;Hydraulic pump is duplex pump;Main pump oil-out is connected with banked direction control valves, and banked direction control valves is connected with equipment motor;Auxiliary pump oil-out is connected with magnetic valve;Magnetic valve includes two oil-outs, and one oil-out of magnetic valve is connected to the banked direction control valves, and another oil-out of magnetic valve is connected to hydraulic oil container.When automatically controlled button in the raw when, Engine ECU is then in standard working curve state, is now individually for whole hydraulic system fuel feeding by main pump;When pressing automatically controlled button, main pump and auxiliary pump are whole hydraulic system fuel feeding jointly, so as to increase the flow that hydraulic pump is supplied to equipment motor, and then the speed and proportionality coefficient of its hydraulic pump to equipment motor output flow of loading machine walking are reduced, realize the function of walking operations.

Description

A kind of wheel loader that can configure walking work tool
Technical field
It the utility model is related to technical field of engineering machinery, and in particular to a kind of wheel loader.
Background technology
Loading machine is a kind of engineering machinery, and standard configuration is scraper bowl, is mainly used in loading operation and traveling.Loading machine includes operation Push and pull system, hydraulic system and power drive system.Operation push and pull system includes swing arm, rocking arm and pull bar;Hydraulic system includes Hydraulic pump, hydraulic valve and hydraulic jack;Power drive system includes engine, fluid torque-converter, gearbox and bridge.Engine is defeated The energy gone out, a part is transferred to traveling mechanism via fluid torque-converter and gearbox, for driving the traveling of whole loading machine; Another part drives hydraulic jack via torque-converters and hydraulic pump, to realize steering and loading operation.
Loading machine can also various equipments be multi-functional to realize by configuring, so as to increase the operating mode accommodation of complete machine. And walking operations equipment refers to need the equipment for carrying out operation during exercise, such as sweeper, milling device, snow blower and turner Deng equipment.So that loading machine configures sweeper as an example:The operation push and pull system of sweeper and loading machine connects, and the power of loading machine passes Dynamic system can provide the power of walking for it, and the hydraulic system of loading machine can provide the power of round brush cleaning work for it, so Can realizes the function of carrying out cleaning work during exercise.Current domestic wheeled loader is mostly using fluid torque-converter Drive mechanism and fixed dilivery hydraulic system, it is characterized in that fluid torque-converter can by a certain percentage while be transmission system and hydraulic system Power is provided, i.e., for wheeled loader, its speed walked and the flow of its hydraulic pump output are certainty ratio relations, And it can be raised and lowered simultaneously with the change of engine speed.
Still so that loading machine configures sweeper as an example:Operation round brush on sweeper is driven by hydraulic motor thereon Dynamic, the resistance that its round brush is run into when considering sweeper operation is, it is necessary to which hydraulic motor provides certain operation torsion for it Square, and the hydraulic motor of sweeper will not typically change again after once shaping.And during loading machine configuration sweeper, often occur Clean sordid phenomenon, reason is that the speed of its walking is to the flow that the hydraulic motor on sweeper exports with its hydraulic pump Certainty ratio relation, and this large percentage of wheeled loader, occur that the speed of travel is very fast, and clean slow feelings Condition, so as to cause to occur to clean sordid phenomenon.
Conventional solution is:The gearing factor of gearbox and drive axle is readjusted, so as to which complete machine be greatly lowered The speed of travel, and then speed and its hydraulic pump that loading machine walking is greatly lowered are exported to the hydraulic motor on sweeper and flowed The proportionality coefficient of amount.Although this solves the sordid problem of cleaning of loading machine configuration sweeper, because of this side Method reduces complete machine maximum speed, can reduce the transition operating efficiency of loading machine first;Secondly, this method is greatly improved The tractive force of complete machine, threat is caused to the reliability of complete machine structure part.
The content of the invention
In order to overcome the deficiencies in the prior art, the utility model offer is a kind of can to configure work tool of walking Wheel loader.
The utility model is achieved through the following technical solutions:A kind of wheel loader that can configure walking work tool, Including power drive system, hydraulic system;Power drive system engine, fluid torque-converter, gearbox and the bridge;The liquid Pressure system includes hydraulic oil container, hydraulic pump, hydraulic valve and hydraulic jack;The engine is provided with two working curves;Two The working curve is not configure the standard working curve used during walking operations equipment respectively, and during configuration walking work tool The rated speed used is less than the facility pattern curve of standard working curve;Engine is connected with Engine ECU, Engine ECU It is connected with the automatically controlled button for controlling engine switching standards working curve and facility pattern curve;The hydraulic pump is duplex Pump, duplex pump include the main pump and auxiliary pump of series connection;The main pump oil-out is connected with banked direction control valves, and the banked direction control valves is connected with equipment Motor;The auxiliary pump oil-out is connected with magnetic valve;The magnetic valve includes two oil-outs, one oil-out connection of magnetic valve To the banked direction control valves, another oil-out of magnetic valve is connected to hydraulic oil container.
It is further:The engine is the electric-control motor of state three;The standard working curve of the electric-control motor of state three Rated speed is 2400r/min or so, and the rated speed of the facility pattern curve of the electric-control motor of state three is left for 1800r/min It is right.
The Engine ECU and automatically controlled button are connected on power supply;The magnetic valve is in parallel with Engine ECU, magnetic valve It is parallel with facility pattern indicator lamp.
The facility pattern indicator lamp is showed with light, sound or written form.
The automatically controlled button is arranged on the instrument desk in loader drive room.
The equipment motor shares one.
The equipment motor shares multiple, multiple equipment motor series connection.
Engine is provided with two working curves, standard working curve and facility pattern curve;Standard working curve is corresponding Be normal operating mode when wheel loader does not configure walking operations equipment, be wheeled loading corresponding to facility pattern curve Equipment mode of operation during machine configuration walking work tool.Two kinds of mode of operations are switched over by an automatically controlled button.Meanwhile Automatically controlled button also control magnetic valve.When automatically controlled button in the raw(The state of open circuit)When, Engine ECU is then in mark Quasi- working curve state, whole hydraulic system fuel feeding is now individually for by main pump, auxiliary pump is then in idle running (off-load) state;When by Under automatically controlled button when, facility pattern indicator lamp lights, and main pump and auxiliary pump are jointly whole hydraulic system fuel feeding, so as to increase liquid The flow that press pump is supplied to equipment motor, and then the speed for reducing loading machine walking is exported to equipment motor with its hydraulic pump and flowed The proportionality coefficient of amount, realize the function of walking operations.
Compared with prior art, the beneficial effects of the utility model are:
(1) various walking operations equipments can be configured on loading machine, expand the operating mode accommodation of loading machine;
(2) the transition operating efficiency of loading machine is not interfered with;
(3) when loading machine is in equipment mode of operation, the tractive force of loading machine will not increase, so as to ensure filling structure The reliability of part;
(4) two kinds of mode of operations of loading machine are controlled by an automatically controlled button, simple to operate;
(5) hydraulic system uses duplex pump structure type, by solenoid valve control, makes the flow of hydraulic system can be according to work Condition needs and is changed, and simple and reliable for structure, cost is relatively low.
Brief description of the drawings
Fig. 1 is the structural representation of the hydraulic system of the utility model embodiment one;
Fig. 2 is the structural representation of the electric control system of the utility model embodiment one.
In figure:1 hydraulic oil container, 2 duplex pumps, 2.1 main pumps, 2.2 auxiliary pumps, 3 magnetic valves, 4 equipment motors, 5 banked direction control valves, 6 electricity Control button, 7 Engine ECUs, 8 facility pattern indicator lamps.
Embodiment
It is a specific embodiment of the present utility model below, the utility model is described further in conjunction with accompanying drawing.
A kind of wheel loader that can configure walking work tool, including power drive system, hydraulic system;Power passes Dynamic system includes engine, fluid torque-converter, gearbox and bridge;Hydraulic system include hydraulic oil container 1, hydraulic pump, hydraulic valve and Hydraulic jack.The energy of engine output, a part is transferred to traveling mechanism via fluid torque-converter and gearbox, for driving The traveling of whole loading machine;Another part drives hydraulic jack via fluid torque-converter and hydraulic pump, turns to and makees to realize Industry;It is prior art above, is not repeating now.
With reference to shown in Fig. 1, hydraulic pump is duplex pump 2, and duplex pump 2 includes the main pump 2.1 and auxiliary pump 2.2 of series connection, duplex pump 2 Suction hydraulic oil in from hydraulic oil container 1.The oil-out of main pump 2.1 is connected with banked direction control valves 5, and banked direction control valves 5 connects equipment motor 4, and then Drive walking operations equipment.One or more is can be set in equipment motor 4, and multiple equipment motors 4 are connected.The oil-out of auxiliary pump 2.2 Magnetic valve 3 is connected, magnetic valve 3 includes two oil-outs, and 3 one oil-outs of magnetic valve are connected to banked direction control valves 5, and magnetic valve 3 is another Individual oil-out is connected to hydraulic oil container 1.The together driver equipment motor 4 of auxiliary pump 2.2, or control pair are controlled by magnetic valve 3 Pump 2.2 is unloaded.
In conjunction with shown in Fig. 2, engine is the electric-control motor of state three, and the electric-control motor of state three is connected with Engine ECU 7; The electric-control motor of state three is provided with two working curves, and one is not configure the standard work song used during walking operations equipment Line, the rated speed of standard working curve is about 2400r/min or so;Another volume used when being configuration walking work tool Determine the facility pattern curve that rotating speed is less than standard working curve, the rated speed of facility pattern curve is about 1800r/min or so. Engine ECU 7 and automatically controlled button 6 are connected on power supply, meanwhile, magnetic valve 3 is in parallel with Engine ECU 7;So, by automatically controlled Button 6 can control the switching of two working curves in Engine ECU 7, and the action of magnetic valve 3 simultaneously.Automatically controlled button 6 is set On instrument desk in loader drive room, facilitate pilot control.Magnetic valve 3 is parallel with facility pattern indicator lamp 8, equipment mould Formula indicator lamp 8 can be showed in the form of light, sound or word etc..
Described above is only preferred embodiment of the present utility model, it should be pointed out that:For the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as the scope of protection of the utility model.
The course of work:
Loading machine normal operating mode:Automatically controlled button 6 is in the raw(The state of open circuit)When, the loading machine starts Machine ECU7 is in standard working curve state, is now individually for whole hydraulic system fuel feeding by main pump, and auxiliary pump then (unloads in idle running Lotus) state;
Loader implement mode of operation:Automatically controlled button 6 is pressed, facility pattern indicator lamp 8 is lighted, and Engine ECU 7 is switched to Facility pattern curve;Meanwhile automatically controlled button 6 controls magnetic valve 3 to act, by the control of magnetic valve 3, main pump 2.1 and auxiliary pump 2.2 It is jointly whole hydraulic system fuel feeding, so as to increase the flow that hydraulic pump is supplied to equipment motor 4, and then reduces loading machine The speed of walking and proportionality coefficient of its hydraulic pump to the output flow of equipment motor 4, realize the function of walking operations.

Claims (7)

1. a kind of wheel loader that can configure walking work tool, including power drive system, hydraulic system;The power Transmission system engine, fluid torque-converter, gearbox and bridge;The hydraulic system includes hydraulic oil container(1), hydraulic pump, hydraulic pressure Valve and hydraulic jack;
It is characterized in that:
The engine is provided with two working curves;Two working curves make when being respectively and not configuring walking operations equipment Standard working curve, and the rated speed used during configuration walking work tool are less than the facility pattern of standard working curve Curve;Engine is connected with Engine ECU(7), Engine ECU(7)It is connected with for controlling the work of engine switching standards bent The automatically controlled button of line and facility pattern curve(6);
The hydraulic pump is duplex pump(2), duplex pump(2)Main pump including series connection(2.1)And auxiliary pump(2.2);The main pump (2.1)Oil-out is connected with banked direction control valves(5), the banked direction control valves(5)It is connected with equipment motor(4);The auxiliary pump(2.2)Oil-out It is connected with magnetic valve(3);The magnetic valve(3)Including two oil-outs, magnetic valve(3)One oil-out is connected to the multichannel Valve(5), magnetic valve(3)Another oil-out is connected to hydraulic oil container(1).
A kind of 2. wheel loader that can configure walking work tool according to claim 1, it is characterised in that:It is described Engine is the electric-control motor of state three;The rated speed of the standard working curve of the electric-control motor of state three is 2400r/min, state three The rated speed of the facility pattern curve of electric-control motor is 1800r/min.
A kind of 3. wheel loader that can configure walking work tool according to claim 1, it is characterised in that:It is described Engine ECU(7)With automatically controlled button(6)It is connected on power supply;The magnetic valve(3)With Engine ECU(7)Parallel connection, magnetic valve (3)It is parallel with facility pattern indicator lamp(8).
A kind of 4. wheel loader that can configure walking work tool according to claim 3, it is characterised in that:It is described Facility pattern indicator lamp(8)Showed with light, sound or written form.
A kind of 5. wheel loader that can configure walking work tool according to claim 3, it is characterised in that:It is described Automatically controlled button(6)It is arranged on the instrument desk in loader drive room.
A kind of 6. wheel loader that can configure walking work tool according to claim 1, it is characterised in that:It is described Equipment motor(4)Share one.
A kind of 7. wheel loader that can configure walking work tool according to claim 1, it is characterised in that:It is described Equipment motor(4)Share multiple, multiple equipment motors(4)Series connection.
CN201720764542.5U 2017-06-28 2017-06-28 A kind of wheel loader that can configure walking work tool Active CN206829236U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720764542.5U CN206829236U (en) 2017-06-28 2017-06-28 A kind of wheel loader that can configure walking work tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720764542.5U CN206829236U (en) 2017-06-28 2017-06-28 A kind of wheel loader that can configure walking work tool

Publications (1)

Publication Number Publication Date
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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107119741A (en) * 2017-06-28 2017-09-01 徐工集团工程机械股份有限公司科技分公司 The wheel loader of walking work tool can be configured

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107119741A (en) * 2017-06-28 2017-09-01 徐工集团工程机械股份有限公司科技分公司 The wheel loader of walking work tool can be configured

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