CN208682969U - Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery - Google Patents
Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery Download PDFInfo
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- CN208682969U CN208682969U CN201821200193.5U CN201821200193U CN208682969U CN 208682969 U CN208682969 U CN 208682969U CN 201821200193 U CN201821200193 U CN 201821200193U CN 208682969 U CN208682969 U CN 208682969U
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Abstract
The utility model relates to a kind of track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery, wherein hydraulic pressure tension system includes: tensioning wheel (3)；Hydraulic system (4) includes the valve group for detecting the pressure detecting part (44) of hydraulic system (4) operating pressure, the executive component connecting with tensioning wheel (3) and control executive component movement in hydraulic system (4)；And control unit, it is coupled with pressure detecting part (44) and valve group, for determining the operating mode of clamping system according to the detected value of pressure detecting part (44), and control valve group acts, and is in clamping system and the matched state of operating mode.The utility model can accurately reflect the external environment of walking of track rail assembly, avoid causing to be tensioned hypodynamic problem due to crawler belt stretcher strain, to make clamping system that can reliably provide tensile force under different working modes.
Description
Technical field
The utility model relates to technical field of engineering machinery more particularly to a kind of track rail assembly hydraulic pressure tension systems, crawler belt
Assembly and engineering machinery.
Background technique
China is vast in territory, populous, and the disasters such as fire, floods, snow disaster, earthquake take place frequently, and seriously threatens the life of citizen
Life and property safety.Moreover, all kinds of burst accidents sharply increase with quick urbanization process, people's life wealth is caused
The heavy losses of production.The features such as diversity, complexity is presented in these disasters and accident, brings for Post disaster relief with reconstruction huge
It is difficult.However China's calamity emergency rescue outfit technical level seriously lags, and has a single function, low degree of specialized division of labor, causes to rescue
Not in time and inefficiency.Complicated topographic and geologic condition seriously restricts the mobility of emergency and rescue equipment especially after calamity,
Miss valuable rescue time.
And high speed track rail assembly is remarkably improved after the calamities such as emergency management and rescue vehicle reply miriness, soft terrain intricately quality
The ability of shape condition improves the efficiency of emergency management and rescue.
When passing through rugged road surface, to avoid the face deformation everywhere of weight bearing train from causing the tensioning degree of rubber belt track violent
Variation leads to the failures such as de- chain, it is therefore desirable to be equipped with clamping system.And when to obstacle detouring, especially high speed obstacle detouring when, tensioning wheel will
By biggish shock loading, it is overly compressed there are tensioning hydro-cylinder and then leads to de- chain.In addition, due to rubber belt track
Mostly endless belt, hydraulic system is difficult to realize shrink during the installation process at present, is unfavorable for installation maintenance.
Utility model content
The embodiments of the present invention provide a kind of track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery,
It can be improved the reliability that clamping system works under different operating conditions.
To achieve the above object, the embodiments of the present invention first aspect provides a kind of track rail assembly hydraulic tensioning system
System, comprising:
Tensioning wheel；
Hydraulic system, include in hydraulic system for detect the pressure detecting part of hydraulic system working pressure, with tensioning
Take turns the executive component of connection and the valve group of control executive component movement；And
Control unit is coupled with pressure detecting part and valve group, is opened for being determined according to the detected value of pressure detecting part
The operating mode of clamping system, and control valve group acts, and is in clamping system and the matched state of operating mode.
Further, in track rail assembly walking process, operating mode includes driving mode, obstacle detouring mode and ftercompction mould
Formula.
Further, hydraulic system further includes accumulator, and accumulator is connected by the first working chamber of valve group and executive component
It is logical；
Under driving mode, executive component provides tensile force, and accumulator carries out pressure stabilizing to executive component by valve group；
Under obstacle detouring mode, valve group cuts off the connection of accumulator and executive component, so that executive component individually undertakes obstacle detouring
Load；And/or
Under ftercompction mode, hydraulic system is the first working chamber fuel feeding of executive component, with to the first work of executive component
Make repairing in chamber and accumulator.
Further, in track rail assembly walking process, control unit can exceed in the detected value of pressure detecting part
When oil pressure relief P0, fault alarm is carried out；
Pressure detecting part detected value beyond obstacle detouring pressure P1 and when without departing from oil pressure relief P0, cut clamping system
Shift to obstacle detouring mode；
Pressure detecting part detected value beyond driving pressure P2 and when without departing from obstacle detouring pressure P1, cut clamping system
Shift to driving mode；And/or
When the detected value of pressure detecting part is without departing from driving pressure P2, clamping system is made to switch to ftercompction mode, and
P0>P1>P2。
Further, hydraulic system further includes oil sources, fuel tank and accumulator, and valve group includes:
On-off valve；With
Reversal valve, two actuator ports are connected to two working chambers of executive component respectively, and oil inlet is connected to oil sources, are returned
Hydraulic fluid port is connected to fuel tank；
Wherein, accumulator is connected by the first working chamber of on-off valve and executive component.
Further, in track rail assembly walking process, operating mode includes driving mode, obstacle detouring mode and ftercompction mould
Formula,
Under driving mode, on-off valve is connected, and reversal valve be in each hydraulic fluid port in middle position and be all closed, and accumulator passes through valve group to holding
Units carry out pressure stabilizing；
Under obstacle detouring mode, on-off valve is disconnected, and reversal valve is in the state that each hydraulic fluid port is all closed, so that executive component is independent
Undertake obstacle detouring load；And/or
Under ftercompction mode, on-off valve is connected, and reversal valve is in the first working position, first work of the oil sources to executive component
Chamber fuel feeding, so that oil sources repairing into the first working chamber and accumulator of executive component.
Further, operating mode includes assembly mode.
Further, under assembly mode, the second working chamber fuel feeding from hydraulic system to executive component so that executive component
Drive tensioning wheel movement in the state for releasing tensioning.
Further, hydraulic system further includes oil sources, fuel tank and accumulator, and valve group includes:
On-off valve；With
Reversal valve, two actuator ports are connected to two working chambers of executive component respectively, and oil inlet is connected to oil sources, are returned
Hydraulic fluid port is connected to fuel tank；
Wherein, accumulator is connected to by on-off valve with the first working chamber of executive component, to be to execute member by accumulator
Part, which provides, is tensioned required pressure；Under assembly mode, on-off valve is disconnected, and reversal valve is in the second working position, so that executive component
Drive tensioning wheel movement in the state for releasing tensioning.
Further, hydraulic system further includes overflow valve, overflow valve be located at executive component the first working chamber and fuel tank it
Between.
Further, overflow valve is located between the first working chamber and on-off valve of executive component.
Further, hydraulic system further includes one-way throttle valve, and one-way throttle valve is located between on-off valve and accumulator.
Further, it is located in the region that crawler belt is enclosed, clamping system includes:
The supporter of fixed setting；With
Tension link, first end connect to form the first hinge with supporter, and second end connect to form the second hinge with tensioning wheel
Point；
Wherein, executive component is tensioning hydro-cylinder, and the piston rod of tensioning hydro-cylinder is connected on the second hinge of tensioning wheel, cylinder barrel
It connect to form third hinge with supporter, the first hinge, the second hinge and third hinge are enclosed triangle.
To achieve the above object, the embodiments of the present invention second aspect provides a kind of track rail assembly, including above-mentioned
The track rail assembly hydraulic pressure tension system of embodiment.
Further, track rail assembly further include:
Driving wheel, it is coaxially connected with the drive shaft of complete machine；
Multiple carrying rollers are located at below driving wheel for carrying main screw lift；
Directive wheel is located at the rear of multiple carrying rollers；With
Crawler belt；
Wherein, the tensioning wheel in clamping system is located at the front of multiple carrying rollers, and crawler belt is successively around driving wheel, tensioning
Wheel, each carrying roller and directive wheel form triangle track rail assembly.
To achieve the above object, the embodiments of the present invention third aspect provides a kind of engineering machinery, including above-mentioned
The track rail assembly of embodiment.
Further, engineering machinery is emergency and rescue equipment.
Based on the above-mentioned technical proposal, the track rail assembly hydraulic pressure tension system of the utility model one embodiment, in hydraulic pressure system
Setting is used for the pressure detecting part of detection system pressure in system, and the Working mould of clamping system can be determined according to pressure detection value
Formula, and control valve group acts, and is in clamping system and the matched state of operating mode.The utility model is with hydraulic system pressure
As the foundation for judging operating mode, it can accurately reflect the external environment of walking of track rail assembly, avoid drawing due to crawler belt
Stretching deformation causes to be tensioned hypodynamic problem, to make clamping system that can reliably provide tensioning under different working modes
Power.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the one embodiment on the utility model track rail assembly hydraulic pressure tension system and chassis；
Fig. 2 is the structural schematic diagram that unilateral tensioning wheel is hidden in Fig. 1；
Fig. 3 is the structure simplification figure of the utility model track rail assembly clamping system；
Fig. 4 is the schematic diagram of one embodiment of the utility model track rail assembly hydraulic pressure tension system.
Description of symbols
1, chassis；2, crawler belt；3, tensioning wheel；4, hydraulic system；40, one-way throttle valve；41, accumulator；42, tensioning oil
Cylinder；43, valve group and hydraulic services；44, pressure detecting part；45, on-off valve；46, overflow valve；47, reversal valve；48, oil sources；
49, fuel tank；5, tension link；6, supporter；7, driving wheel；8, directive wheel；9, carrying roller；A, the first hinge；B, the second hinge；
C, third hinge.
Specific embodiment
The utility model described further below.In the following paragraphs, the different aspect of embodiment is defined in more detail.
The various aspects so limited can be combined with any other one aspect or many aspects, can not be combined unless explicitly stated otherwise.Especially
It is, it is considered to be preferred or advantageous any feature can be considered as preferred or advantageous spy with other one or more
Sign combination.
The terms descriptions merely for convenience such as " first " that occurs in the utility model, " second ", with distinguish have it is identical
The different building blocks of title are not offered as successive or primary-slave relation.
"upper", "lower", "top", "bottom", "front", "rear", "inner" and "outside" etc. are used in the description of the present invention,
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and being merely for convenience of description, this is practical new
Type, rather than the device of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to scope of protection of the utility model.
As shown in Figures 1 to 4, the utility model provides a kind of track rail assembly hydraulic pressure tension system, and crawler belt can be rubber
Glue crawler belt or chain crawler belt, but subsequent embodiment is illustrated by taking rubber belt track as an example herein.It is schematical real at one
It applies in example, clamping system includes tensioning wheel 3, hydraulic system 4 and control unit.Wherein, tensioning wheel 3 is used to provide for crawler belt 2 and open
Clamp force, hydraulic system 4 are used to drive the movement of tensioning wheel 3 to realize tensioning or release the state of tensioning.
It include for detecting the pressure detecting part 44 of 4 operating pressure of hydraulic system, connecting with tensioning wheel 3 in hydraulic system 4
The valve group of the executive component and control executive component movement that connect.For example, pressure detecting part 44 can be located at 4 oil circuit of hydraulic system
The upper position being connected to the first working chamber of executive component, is preferably disposed at the position of the first working chamber close to executive component,
Rapidly to perceive the pressure that external operating environment applies hydraulic system 4, pressure detecting part 44 can be pressure sensing
Device etc..Valve group can be multiple valves being independently arranged or multiple valve groups at integrated valve block.
Control unit is connect with pressure detecting part 44 and valve group signal, for the detected value according to pressure detecting part 44
P determines the operating mode of clamping system, and control valve group executes corresponding actions, and clamping system is made to be in matched with operating mode
State.Detect hydraulic system 4 can real-time detection hydraulic system 4 pressure, to switch to suitable operating mode more in time.
In the hydraulic system of some engineering machinery, engineering can be determined by the displacement of piston rod in detection hydraulic cylinder
Mechanical operating mode, but inventors have found that judge benchmark if be displaced using piston rod as track rail assembly operating mode, spy
It is not for rubber belt track, crawler belt is elasticoplastic body, and during tensioning and traveling, crawler belt perimeter will be stretched, Huo Zhe
Can also crawler belt be made to deform under by thermal condition.In this way in control process, it will since rubber belt track deformation error causes to open
Tight insufficient problem, influences the accuracy of operating mode judgement.And with the extension of use time, which will gradually increase
Greatly.
And the utility model embodiment, using hydraulic system pressure as the foundation for judging operating mode, being equivalent to will pass through
The amount of tension judgement of crawler belt is changed to tensile force judgement, directly can objectively reflect the external environment of walking of track rail assembly, example
It is in normal running mode or obstacle detouring mode, such as accurately to judge the switching time of operating mode.It can avoid due to carrying out
Band stretcher strain causes to be tensioned hypodynamic problem, increases without the service life with crawler belt and corrects pressure judgment threshold,
To make clamping system that can reliably provide tensile force under different working modes.
In one embodiment, in track rail assembly walking process, operating mode includes driving mode, obstacle detouring mode and benefit
Die pressing type.
The embodiment can be protected under different walking states by setting driving mode and obstacle detouring mode in track rail assembly
Suitable tensile force is held, the problem of crawler belt is deviate from due to excessively loose is prevented；Moreover, liquid can be made by setting ftercompction mode
Oil liquid is replenished in time in insufficient pressure in pressure system 4, so as to provide enough tensile forces, makes the walking of track rail assembly more
Reliably.
As shown in figure 4, hydraulic system further includes accumulator 41, the first work that accumulator 41 passes through valve group and executive component
Chamber connection, plays the role of steady pressure of system.In track rail assembly walking process, the working method of hydraulic system 4 under each operating mode
It at least selects one of following:
Under driving mode, executive component applies active force to tensioning wheel 3, so that tensioning wheel 3 is kept in place,
To provide tensile force for crawler belt 2.Accumulator 41 is connected to by valve group with the first working chamber of executive component, to executive component
Carry out pressure stabilizing.Under normally travel state, if making the intracorporal despite pressure fluctuations of the first chamber of executive component due to road bump,
It can be fluctuated by 41 absorption pressure of accumulator, play pressure stabilization function.
Under obstacle detouring mode, the connection of valve group movement cutting accumulator 41 and executive component, so that executive component is individually held
Carry on a shoulder pole obstacle detouring load.Tensioning wheel 3 is generally located in the forward position of track rail assembly, can be applied at first by ground obstacle outer
Power, the external force can make tensioning wheel 3 to 2 medial motion of crawler belt, executive component made to bounce back, if cutting accumulator 41 and executive component
Connected relation, avoid the crawler belt under the extreme operating condition of obstacle detouring that tensioning wheel 3 is forced excessively to push back, prevent de- chain.
Under ftercompction mode, hydraulic system 4 is the first working chamber fuel feeding of executive component, with to the first work of executive component
Make repairing in chamber and accumulator 41.Hydraulic system 4 is after being used for a long time, it may appear that and oil leakage phenomenon causes tensioning pressure insufficient,
By the way that ftercompction mode is arranged, clamping system can be made to maintain enough tensile forces always in use.
In one embodiment, in track rail assembly walking process, control unit can be according to pressure detecting part 44
Detected value P automatically determines the opportunity of operating mode switching.One of following judgement at least can be used in P0 > P1 cited below > P2
Mode:
When the detected value of pressure detecting part 44 exceeds oil pressure relief P0 (P > P0), fault alarm is carried out, is illustrated more
During barrier, biggish resistance is especially encountered during high speed obstacle detouring, track rail assembly is difficult to through the barrier.
In the detected value beyond obstacle detouring pressure P1 and when without departing from oil pressure relief P0 (P1 < P≤P0) of pressure detecting part 44,
Illustrate that track rail assembly encounters barrier during traveling and increases 4 pressure of hydraulic system, clamping system is made to switch to obstacle detouring
Mode.
In the detected value beyond driving pressure P2 and when without departing from obstacle detouring pressure P1 (P2 < P≤P1) of pressure detecting part 44,
Illustrate that track rail assembly is in normally travel state, 4 pressure of hydraulic system is smaller, and clamping system is made to switch to driving mode.
When the detected value of pressure detecting part 44 is without departing from driving pressure P2, illustrate the available pressure of accumulator 41 not
It is able to satisfy normal tensioning pressure, clamping system is made to switch to ftercompction mode.
The embodiment can accurately judge the Working mould that track rail assembly is presently according to the pressure of hydraulic system 4
Formula, and corresponding operating mode is automatically switched to, can meet the needs of track rail assembly is under various applying working conditions.
In one embodiment, as shown in figure 4, hydraulic system further includes oil sources 48, fuel tank 49 and accumulator 41, valve group packet
Include on-off valve 45 and reversal valve 47.Wherein, two actuator ports of reversal valve 47 connect with two working chambers of executive component respectively
Logical, oil inlet is connected to oil sources 48, and oil return opening is connected to fuel tank 49.Accumulator 41 passes through on-off valve 45 and the first of executive component
Working chamber connection.
Based on the embodiment, control unit can make tensioning system by control on-off valve 45 and 47 combinative movement of reversal valve
System is in different operating modes, controls simple and reliable.
Under driving mode, on-off valve 45 is connected, and reversal valve 47 is in the state that each hydraulic fluid port is all closed, to pass through accumulator
41 provide pressure stabilization function for executive component；
Under obstacle detouring mode, on-off valve 45 is disconnected, and reversal valve 47 is in the state that each hydraulic fluid port is all closed, so that executive component
Individually undertake obstacle detouring load；And/or
Under ftercompction mode, on-off valve 45 is connected, and reversal valve 47 is in the first working position, oil sources 48 to executive component the
One working chamber fuel feeding, so that the repairing into the first working chamber and accumulator 41 of executive component of oil sources 48.
Further, in some embodiments, operating mode further includes assembly mode.The generally annular band of rubber belt track,
Biggish installation surplus is needed, for triangle crawler belt, each wheel encloses the topological curve length for the polygon for being in and rubber is carried out
Difference with perimeter is to install surplus.When executive component drives tensioning wheel 3 towards 2 medial motion of crawler belt, can be at releasing
The state of tensioning, while the topological curve length of triangle crawler belt is reduced, to reserve biggish installation surplus, it is easily installed,
Without increasing other auxiliary devices in assembling process.
Not having the assembling function in current hydraulic system, the periphery installation that crawler belt is sleeved on each wheel is very laborious, if
Make the executive component such as hydraulic cylinder drive tensioning wheel 3 towards 2 medial motion of crawler belt by external force, then needs to be equipped with corresponding
The outfits such as tooling apply biggish active force.
As shown in figure 4, under assembly mode, the second working chamber fuel feeding from hydraulic system 4 to executive component, so as to execute member
Part drives tensioning wheel 3 to move towards 2 interior direction of crawler belt, in the state for releasing tensioning.
Specifically, hydraulic system further includes oil sources 48, fuel tank 49 and accumulator 41, and valve group includes: on-off valve 45 and commutation
Valve 47, two actuator ports of reversal valve 47 are connected to two working chambers of executive component respectively, and oil inlet is connected to oil sources 48,
Oil return opening is connected to fuel tank 49.Wherein, accumulator 41 is connect by on-off valve 45 with the first working chamber of executive component.It is assembling
Under mode, on-off valve 45 is disconnected, and reversal valve 47 is in the second working position, so that executive component drives the movement of tensioning wheel 3 in solution
Except the state of tensioning.
In some embodiments, as shown in figure 4, hydraulic system 4 further includes overflow valve 46, overflow valve 46 is located at executive component
The first working chamber and fuel tank 49 between.During track rail assembly obstacle detouring, if encountering biggish external impact force, it can make
Hydraulic oil overflow in the first cavity of executive component, to provide safety guarantee for other components in clamping system.
Still referring to FIG. 4, overflow valve 46 is located between the first working chamber and on-off valve 45 of executive component.In track rail assembly
During obstacle detouring, if encountering biggish external impact force, the hydraulic oil in the first cavity of executive component can be made directly to overflow
Stream improves security of system.If overflow valve 46 is located at on-off valve 45 between accumulator 41, in the first cavity of executive component
Hydraulic oil need by after on-off valve 45 could overflow, be equivalent to and form closed cavity in the first cavity, cause be
System hypertonia and damage other components.
In some embodiments, hydraulic system 4 further includes one-way throttle valve 40, one-way throttle valve 40 be located at on-off valve 45 with
Between accumulator 41, one-way throttle valve 40 includes the check valve and throttle valve being arranged in parallel.
It rapidly can be 41 repairing of accumulator by check valve under ftercompction mode；During entering obstacle detouring mode, hold
Hydraulic oil in the first cavity of units can be quickly returned in accumulator 41 by check valve, so that executive component drives as early as possible
Tensioning wheel 3 is detached from tensioning state, prevents external biggish impact force action in clamping system.Under driving mode, due to road surface
It jolts when making pressure in executive component, if pressure increases in the first cavity, hydraulic oil can be made to rapidly enter from the first cavity
In accumulator 41, if pressure reduces in the first cavity, hydraulic oil can be made to slowly enter executive component first from accumulator 41
In cavity.System vibration can be reduced.
The embodiment can reduce the clamping system vibration that system generates under driving mode, and Rapid reversal when needed
Tensioning state can guarantee the stationarity and efficiency of operating mode switching simultaneously.
In some embodiments, in conjunction with Fig. 1 to Fig. 3, clamping system is located in the region that crawler belt 2 is enclosed, tensioning system
System includes supporter 6 and tension link 5.Wherein, supporter 6 is fixedly installed, and the first end of tension link 5 is connect with supporter 6
The first hinge A is formed, second end is connect with tensioning wheel 3 forms the second hinge B.Executive component is tensioning hydro-cylinder 42, tensioning hydro-cylinder
42 piston rod is connected on the second hinge B of tensioning wheel 3, and cylinder barrel connect to form third hinge C, the first hinge with supporter 6
A, the second hinge B and third hinge C are enclosed triangle.For example, the second hinge B can be located at the center of tensioning wheel 3.?
Tension link 5 respectively sets a tensioning wheel 3 along the two sides of 2 width direction of crawler belt.
The embodiment can be simple and reliable for structure by the control of flexible 2 tensioning degree of realization crawler belt of tensioning hydro-cylinder 42.
When the piston rod of tensioning hydro-cylinder 42 stretches out, tensioning wheel 3 is rotated counterclockwise around the first hinge A, so that crawler belt 2 is tensioned；Work as tensioning
When the piston rod of oil cylinder 42 retracts, tensioning wheel 3 is rotated clockwise around the first hinge A, so that the relaxation of crawler belt 2.
The working principle of the utility model clamping system is illustrated by taking Fig. 4 as an example below.
Executive component is tensioning hydro-cylinder 42, and the end of piston rod is connect with tensioning wheel 3, such as is attached to tensioning wheel 3
Center, the first working chamber correspond to the rodless cavity of tensioning hydro-cylinder 42, and the second working chamber corresponds to the rod chamber of tensioning hydro-cylinder 42, has
Settable spring in rod cavity, can be more steady when obstacle detouring mode lower piston rod retracts.On-off valve 45 can choose 2/2-way
Solenoid valve, upper corresponding on-state, the corresponding off-state in bottom.Three position four-way electromagnetic valve, and middle position can be used in reversal valve 47
Using O shape function, upper the first working position of correspondence, corresponding second working position in bottom.
Accumulator 41 is connect by on-off valve 45 with the rodless cavity of tensioning hydro-cylinder 42, is set between on-off valve 45 and accumulator 41
There is one-way throttle valve 40, for tensioning hydro-cylinder 42 when compressed, hydraulic oil can quickly enter accumulator 41, the compression of tensioning hydro-cylinder 42
After load is eliminated, hydraulic oil slowly enters rodless cavity.Pressure detecting part 44 is located at the oil being connected to 42 rodless cavity of tensioning hydro-cylinder
On the road.Two actuator ports of reversal valve 47 are connected to two cavitys of tensioning hydro-cylinder 42 respectively, and oil inlet is connected to oil sources 48,
Oil return opening is connected to fuel tank 49.Overflow valve 46 is located between the oil return opening of reversal valve 47 and the rodless cavity of tensioning hydro-cylinder 42.
Under driving mode, in an ON state, reversal valve 47 is in middle position, 48 fuel cut-off of oil sources to on-off valve 45.?
Locking oil cylinder 42 applies active force to tensioning wheel 3, so that tensioning wheel 3 is kept in place, to provide tensioning for crawler belt 2
Power.Accumulator 41 is connected to by on-off valve 45 with the rodless cavity of tensioning hydro-cylinder 42, to carry out pressure stabilizing to tensioning hydro-cylinder 42.Normal row
It sails under state, if making the despite pressure fluctuations in 42 rodless cavity of tensioning hydro-cylinder due to road bump, accumulator 41 can be passed through
Absorption pressure fluctuation, plays pressure stabilization function.
Under obstacle detouring mode, on-off valve 45 is in an off state, and reversal valve 47 is in middle position, and 48 fuel cut-off of oil sources is opened
The rodless cavity and accumulator 41 of locking oil cylinder 42 disconnect, and the piston rod of tensioning hydro-cylinder 42 bounces back under external load effect, tensioning oil
Cylinder 42 individually undertakes obstacle detouring load.
Under ftercompction mode, in an ON state, reversal valve 47 is in the first working position to on-off valve 45, and oil sources 48 works,
Crawler belt 2 is kept to compensate the reduction of tensioning pressure to 41 fuel feeding of rodless cavity and accumulator of tensioning hydro-cylinder 42 by reversal valve 47
Tensioning.The hydraulic oil of 42 rod chamber of tensioning hydro-cylinder returns to fuel tank 49 by reversal valve 47.
Under assembly mode, on-off valve 45 is in an off state, and reversal valve 47 is in the second working position, and oil sources 48 works,
By reversal valve 47 to the rod chamber fuel feeding of tensioning hydro-cylinder 42, retract the piston rod of tensioning hydro-cylinder 42, the hydraulic oil of rodless cavity
Back to fuel tank 49.Tensioning hydro-cylinder 42 drives tensioning wheel 3 to withdraw convenient for assembly rubber belt track.
The clamping system of the utility model embodiment has four kinds of operating modes as a result, can meet and various use and tie up
The demand of nurse's condition, the foundation switched using the pressure of hydraulic system 4 as operating mode can overcome since rubber belt track stretches
Deformation leads to the problem of crawler tensioning deficiency；Ftercompction mode can guarantee that rubber belt track has stable tensile force, so that crawler belt is total
At steady operation；Assembly mode can be such that rubber annular crawler belt is easily installed.
The utility model second aspect provides a kind of track rail assembly, the track rail assembly hydraulic tensioning including above-described embodiment
System.The embodiment can accurately judge the switching time of track rail assembly operating mode, make clamping system in different operating
Tensile force can be reliably provided under mode, advance to guarantee that track rail assembly is stablized, prevent crawler belt from deviating from, improve normal advance
With the reliability and safety of obstacle detouring, and it is easily assembled and safeguards.
In one embodiment, as illustrated in fig. 1 and 2, the track rail assembly of the utility model further include crawler belt 2, driving wheel 7,
Directive wheel 8 and multiple carrying rollers 9.Wherein, it is equipped with tooth on the inside of crawler belt 2 and engages connection, the drive shaft of driving wheel 7 and complete machine with each wheel
Coaxially connected, supporter 6 is connect by bearing with driving wheel 7；Multiple carrying rollers 9 are located at below driving wheel 7 for carrying complete machine
Weight；Tensioning wheel 3 is located at the front of multiple carrying rollers 9, and directive wheel 8 is located at the rear of multiple carrying rollers 9.
Crawler belt 2 successively around driving wheel 7, tensioning wheel 3, each carrying roller 9 and directive wheel 8, forms triangle track rail assembly.It drives
Driving wheel 7, tensioning wheel 3 and directive wheel 8 are respectively three vertex of triangle.Supporter 6 is also designed to class triangular structure, stores
Energy device 41, valve group and hydraulic services 43, carrying roller 9 and directive wheel 8 can be fixed on supporter 6.The rotation of machine's drive axis
Driving wheel 7 is driven to rotate, to drive crawler belt 2 to move.
The embodiment is convenient for rubber-tyred walking mechanism being adapted as crawler type walking mechanism, needs to remove on each tire, and
Driving wheel 7 and drive shaft are coaxially installed on tire position.Entire crawler type walking mechanism is located at the chassis 1 of engineering machinery
Lower section.
The utility model third aspect provides a kind of engineering machinery, the track rail assembly including above-described embodiment, Ci Zhonggong
Journey machinery has more reliable and more stable traveling ability.
Preferably, engineering machinery is emergency and rescue equipment, such as emergency management and rescue vehicle, can further be improved to mud
The adaptability of the complicated geologicals orographic condition such as muddy, soft terrain, improves the efficiency of emergency management and rescue.
Then, clamping system based on the above embodiment provides its working method, in one embodiment, the working method
Include:
Pressure detecting part 44 detects 4 operating pressure of hydraulic system；
Control unit determines the operating mode of clamping system according to the detected value of pressure detecting part 44, and control valve group is dynamic
Make, is in clamping system and the matched state of operating mode.
In some embodiments, in track rail assembly walking process, control unit is according to the detection of pressure detecting part 44
Value determines that the step of operating mode of clamping system specifically includes:
Control unit judges the detected value of pressure detecting part 44 and the relationship of each preset pressure threshold value, each preset pressure threshold
Value includes oil pressure relief P0, obstacle detouring pressure P1 and driving pressure P2, and P0 > P1 > P2；
Control unit carries out fault alarm when the detected value of pressure detecting part 44 exceeds oil pressure relief P0；In pressure
The detected value of detection part 44 makes clamping system switch to obstacle detouring mould beyond obstacle detouring pressure P1 and when without departing from oil pressure relief P0
Formula；Pressure detecting part 44 detected value beyond driving pressure P2 and when without departing from obstacle detouring pressure P1, switch clamping system
To driving mode；And when the detected value of pressure detecting part 44 is without departing from driving pressure P2, clamping system is made to switch to ftercompction
Mode.
Further, the detected value of pressure detecting part 44 and the relationship of each preset pressure threshold value are judged in control unit
Before step, the working method further include:
Default oil pressure relief P0, obstacle detouring pressure P1 and driving pressure P2, these parameters can be obtained by test.
In some embodiments, in track rail assembly walking process, it is in clamping system and the matched shape of operating mode
The step of state, specifically includes:
Under driving mode, executive component provides tensile force, and it is steady to carry out accumulator 41 to executive component by valve group
Pressure；
Under obstacle detouring mode, make the connection of valve group cutting accumulator 41 and executive component, so that executive component individually undertakes
Obstacle detouring load；And/or
Under ftercompction mode, make the first working chamber fuel feeding of 4 executive component of hydraulic system, with to the first of executive component
Repairing in working chamber and accumulator 41.
In some embodiments, under assembly mode, the step of making clamping system be in state matched with operating mode
It specifically includes:
Make second working chamber fuel feeding of the hydraulic system 4 to executive component, so that executive component drives the movement of tensioning wheel 3 to be in
Release the state of tensioning.
Above to a kind of track rail assembly hydraulic pressure tension system provided by the utility model, track rail assembly and engineering machinery into
It has gone and has been discussed in detail.Specific embodiment used herein is expounded the principles of the present invention and embodiment,
The method and its core concept of the above embodiments are only used to help understand the utility model.It should be pointed out that for this
It, without departing from the principle of this utility model, can also be to the utility model for the those of ordinary skill of technical field
Some improvement and modification can also be carried out, and modifications and modifications also fall within the protection scope of the claims of the utility model.
Claims (17)
1. a kind of track rail assembly hydraulic pressure tension system characterized by comprising
Tensioning wheel (3)；
Hydraulic system (4) includes examining in the hydraulic system (4) for detecting the pressure of the hydraulic system (4) operating pressure
Survey the valve group of component (44), the executive component connecting with the tensioning wheel (3) and the control executive component movement；And
Control unit is coupled with the pressure detecting part (44) and valve group, for according to the pressure detecting part (44)
Detected value determines the operating mode of the clamping system, and controls the valve group movement, is in the clamping system and work
The state of pattern match.
2. track rail assembly hydraulic pressure tension system according to claim 1, which is characterized in that in track rail assembly walking process
In, the operating mode includes driving mode, obstacle detouring mode and ftercompction mode.
3. track rail assembly hydraulic pressure tension system according to claim 2, which is characterized in that the hydraulic system further includes storing
Energy device (41), the accumulator (41) are connect by the valve group with the first working chamber of the executive component；
Under the driving mode, the executive component provides tensile force, and the accumulator (41) is by the valve group to execution
Element carries out pressure stabilizing；
Under the obstacle detouring mode, the valve group cuts off the connection of accumulator (41) and executive component, so that the execution
Element individually undertakes obstacle detouring load；And/or
Under the ftercompction mode, the hydraulic system (4) is the first working chamber fuel feeding of the executive component, to hold to described
Repairing in the first working chamber and accumulator (41) of units.
4. track rail assembly hydraulic pressure tension system according to claim 2, which is characterized in that in track rail assembly walking process
In, the control unit can carry out failure report when the detected value of the pressure detecting part (44) exceeds oil pressure relief P0
It is alert；
The pressure detecting part (44) detected value beyond obstacle detouring pressure P1 and when without departing from oil pressure relief P0, make the tensioning be
System switches to the obstacle detouring mode；
The pressure detecting part (44) detected value beyond driving pressure P2 and when without departing from obstacle detouring pressure P1, make the tensioning be
System switches to the driving mode；And/or
When the detected value of the pressure detecting part (44) is without departing from driving pressure P2, clamping system is made to switch to the ftercompction
Mode, and P0 > P1 > P2.
5. track rail assembly hydraulic pressure tension system according to claim 1, which is characterized in that the hydraulic system further includes oil
Source (48), fuel tank (49) and accumulator (41), the valve group include:
On-off valve (45)；With
Reversal valve (47), two actuator ports are connected to two working chambers of the executive component respectively, oil inlet and the oil
Source (48) connection, oil return opening are connected to the fuel tank (49)；
Wherein, the accumulator (41) is connect by on-off valve (45) with the first working chamber of the executive component.
6. track rail assembly hydraulic pressure tension system according to claim 5, which is characterized in that in track rail assembly walking process
In, the operating mode includes driving mode, obstacle detouring mode and ftercompction mode,
Under the driving mode, the on-off valve (45) is connected, and the reversal valve (47) is in each hydraulic fluid port in middle position and is all closed, institute
It states accumulator (41) and pressure stabilizing is carried out to executive component by the valve group；
Under the obstacle detouring mode, the on-off valve (45) is disconnected, and the reversal valve (47) is in the state that each hydraulic fluid port is all closed,
So that executive component individually undertakes obstacle detouring load；And/or
Under the ftercompction mode, the on-off valve (45) is connected, and the reversal valve (47) is in the first working position, the oil sources
(48) the first working chamber fuel feeding of Xiang Suoshu executive component, so that first working chamber and storage of oil sources (48) Xiang Suoshu executive component
Repairing in energy device (41).
7. track rail assembly hydraulic pressure tension system according to claim 1, which is characterized in that the operating mode includes assembly
Mode.
8. track rail assembly hydraulic pressure tension system according to claim 7, which is characterized in that under the assembly mode, institute
The second working chamber fuel feeding of hydraulic system (4) Xiang Suoshu executive component is stated, so that the executive component drives tensioning wheel (3) movement
In the state for releasing tensioning.
9. track rail assembly hydraulic pressure tension system according to claim 7, which is characterized in that the hydraulic system further includes oil
Source (48), fuel tank (49) and accumulator (41), the valve group include:
On-off valve (45)；With
Reversal valve (47), two actuator ports are connected to two working chambers of the executive component respectively, oil inlet and the oil
Source (48) connection, oil return opening are connected to the fuel tank (49)；
Wherein, the accumulator (41) is connect by on-off valve (45) with the first working chamber of the executive component, in the dress
With under mode, the on-off valve (45) is disconnected, and the reversal valve (47) is in the second working position, so that the executive component drives
Tensioning wheel (3) movement is in the state for releasing tensioning.
10. track rail assembly hydraulic pressure tension system according to claim 5, which is characterized in that the hydraulic system (4) is also wrapped
It includes overflow valve (46), the overflow valve (46) is located between the first working chamber of the executive component and fuel tank (49).
11. track rail assembly hydraulic pressure tension system according to claim 10, which is characterized in that the overflow valve (46) is located at
Between the first working chamber and the on-off valve (45) of the executive component.
12. track rail assembly hydraulic pressure tension system according to claim 5, which is characterized in that the hydraulic system (4) is also wrapped
It includes one-way throttle valve (40), the one-way throttle valve (40) is located between the on-off valve (45) and the accumulator (41).
13. track rail assembly hydraulic pressure tension system according to claim 1, which is characterized in that be located at crawler belt (2) and be enclosed
Region in, the clamping system includes:
The supporter (6) of fixed setting；With
Tension link (5), first end is connect with the supporter (6) forms the first hinge (A), second end and the tensioning wheel
(3) connection forms the second hinge (B)；
Wherein, the executive component is tensioning hydro-cylinder (42), and the piston rod of the tensioning hydro-cylinder (42) is connected to the tensioning wheel
(3) on the second hinge (B), cylinder barrel connect to be formed third hinge (C) with the supporter (6), first hinge (A),
Two hinges (B) and third hinge (C) are enclosed triangle.
14. a kind of track rail assembly, which is characterized in that including any track rail assembly hydraulic tensioning system of claim 1~13
System.
15. track rail assembly according to claim 14, which is characterized in that further include:
Driving wheel (7), it is coaxially connected with the drive shaft of complete machine；
Multiple carrying rollers (9) are located at below the driving wheel (7) for carrying main screw lift；
Directive wheel (8) is located at the rear of multiple carrying rollers (9)；With
Crawler belt (2)；
Wherein, the tensioning wheel in clamping system (3) is located at the front of multiple carrying rollers (9), and the crawler belt (2) successively surround
The driving wheel (7), tensioning wheel (3), each carrying roller (9) and directive wheel (8) form triangle track rail assembly.
16. a kind of engineering machinery, which is characterized in that including track rail assembly described in claims 14 or 15.
17. engineering machinery according to claim 16, which is characterized in that the engineering machinery is emergency and rescue equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200193.5U CN208682969U (en) | 2018-07-27 | 2018-07-27 | Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200193.5U CN208682969U (en) | 2018-07-27 | 2018-07-27 | Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery |
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| Publication Number | Publication Date |
|---|---|
| CN208682969U true CN208682969U (en) | 2019-04-02 |
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ID=65882481
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821200193.5U Active CN208682969U (en) | 2018-07-27 | 2018-07-27 | Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108715192A (en) * | 2018-07-27 | 2018-10-30 | 徐工集团工程机械有限公司 | Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery |
| CN110194226A (en) * | 2019-07-12 | 2019-09-03 | 徐工集团工程机械有限公司 | Vehicle track device and vehicle |
-
2018
- 2018-07-27 CN CN201821200193.5U patent/CN208682969U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108715192A (en) * | 2018-07-27 | 2018-10-30 | 徐工集团工程机械有限公司 | Track rail assembly hydraulic pressure tension system, track rail assembly and engineering machinery |
| CN110194226A (en) * | 2019-07-12 | 2019-09-03 | 徐工集团工程机械有限公司 | Vehicle track device and vehicle |
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Effective date of registration: 20220803 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |