CN207193711U - Tandem roller - Google Patents
Tandem roller Download PDFInfo
- Publication number
- CN207193711U CN207193711U CN201721195618.3U CN201721195618U CN207193711U CN 207193711 U CN207193711 U CN 207193711U CN 201721195618 U CN201721195618 U CN 201721195618U CN 207193711 U CN207193711 U CN 207193711U
- Authority
- CN
- China
- Prior art keywords
- steering cylinder
- cylinder
- steering
- wheel frame
- tandem roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The utility model discloses a kind of tandem roller.Tandem roller includes front-wheel, trailing wheel, for installing the front wheel carrier of front-wheel, for installing the rear wheel frame and hydraulic control system of trailing wheel, hydraulic control system includes the first steering cylinder and the second steering cylinder, the both ends of first steering cylinder and the both ends of the second steering cylinder are respectively connected with front wheel carrier and rear wheel frame, the rod chamber of first steering cylinder connects with the rodless cavity of the second steering cylinder, the rodless cavity of first steering cylinder connects with the rod chamber of the second steering cylinder, hydraulic control system also includes control oil circuit, control oil circuit, which can control, to be interconnected between the first steering cylinder and the second steering cylinder so that fluid mutually compensates for and then makes front wheel carrier and rear wheel frame automatic alignment.The front wheel carrier of tandem roller of the present utility model and the automatic alignment of rear wheel frame can be automatically controlled by control oil circuit, be aligned without driver turn steering wheel to realize, therefore reduce operation difficulty.
Description
Technical field
Technical field of engineering machinery is the utility model is related to, more particularly to a kind of tandem roller.
Background technology
Dual-steel wheel road roller has turning function and crab row function.When carrying out crab row function, front and rear steel wheel is in advance side
Realize and be dislocated upwards.
Dual-steel wheel road roller is when implementing crab row function at present, before driver needs steering wheel rotation to make by fluid-link steering
Steel wheel frame aligns afterwards.Using aforesaid operations mode when, it is necessary to driver slowly steering wheel rotation makes front and rear steel wheel frame slowly right
Just, this process is extremely whard to control, and steel wheel frame is to not positive phenomenon before and after easily occurring, thus causes front and rear steel wheel frame to align precision
The problem of poor.Meanwhile aforesaid operations mode requires higher to the operative skill of driver, operating wastes time and energy.
Utility model content
The purpose of this utility model is to provide a kind of tandem roller, to reduce the operation that front wheel carrier and rear wheel frame align
Difficulty.
The utility model provides a kind of tandem roller, including front-wheel, trailing wheel, the front wheel carrier for installing front-wheel, is used for
The rear wheel frame and hydraulic control system of trailing wheel are installed, hydraulic control system includes the first steering cylinder and the second steering cylinder, the
The both ends of one steering cylinder and the both ends of the second steering cylinder are respectively connected with front wheel carrier and rear wheel frame, the first steering cylinder
Rod chamber connects with the rodless cavity of the second steering cylinder, and the rod chamber of the rodless cavity of the first steering cylinder and the second steering cylinder connects
Logical, hydraulic control system also includes control oil circuit, and control oil circuit can be controlled between the first steering cylinder and the second steering cylinder
It is interconnected so that fluid mutually compensates for and then makes front wheel carrier and rear wheel frame automatic alignment.
Further, control oil circuit be arranged at the first steering cylinder rodless cavity and the second steering cylinder rodless cavity it
Between；Or control oil circuit is arranged between the rod chamber of the first steering cylinder and the rod chamber of the second steering cylinder.
Further, the on-off control valve being provided with oil circuit for controlling control oil circuit break-make is controlled.
Further, control on oil circuit and be additionally provided with the flow control valve connected with on-off control valve.
Further, the bar footpath all same of the cylinder diameter of the cylinder body of the first steering cylinder and the second steering cylinder and piston rod.
Further, the first steering cylinder is articulated with the first pin joint with front wheel carrier, and the first steering cylinder is cut with scissors with rear wheel frame
The second pin joint is connected to, the second steering cylinder is articulated with the 3rd pin joint with front wheel carrier, and the second steering cylinder is hinged with rear wheel frame
In the 4th pin joint, the first pin joint and the 3rd pin joint are symmetrical arranged and second relative to the longitudinal centre line of tandem roller
Pin joint is symmetrical arranged with the 4th pin joint relative to the longitudinal centre line of tandem roller.
Further, hydraulic control system includes attachment structure and crab row oil cylinder, the both ends of attachment structure respectively with front-wheel
Frame is connected with rear wheel frame, and the piston rod or cylinder body of crab row oil cylinder are connected with attachment structure, and steering pattern is in tandem roller
When, the first steering cylinder and the second steering cylinder are acted to control tandem roller to turn to；Crab row mould is in tandem roller
During formula, crab row cylinder action simultaneously drives front wheel carrier and rear wheel frame motion to drive the first steering cylinder and the by attachment structure
Two steering cylinders are acted so that the fluid between the first steering cylinder and the second steering cylinder mutually compensates for.
Further, the first end of attachment structure is rotatably coupled with front wheel carrier, the second end of attachment structure and trailing wheel
Frame is rotatably coupled, and the piston rod or cylinder body and attachment structure of crab row oil cylinder pass through the company between first end and the second end
Socket part connects, and connecting portion and the distance between first end are unequal with connecting portion and the distance between the second end.
Further, hydraulic control system also includes the middle level sensor being arranged on front wheel carrier and/or rear wheel frame, middle position
Sensor detects front wheel carrier and whether rear wheel frame aligns.
Further, hydraulic control system also includes coupling the controller set, control with middle level sensor and control oil circuit
The break-make of the testing result control control oil circuit of device processed level sensor in.
Based on tandem roller provided by the utility model, tandem roller includes front-wheel, trailing wheel, for installing front-wheel
Front wheel carrier, the rear wheel frame for installing trailing wheel and hydraulic control system, hydraulic control system include the first steering cylinder and second
The both ends of steering cylinder, the both ends of the first steering cylinder and the second steering cylinder are respectively connected with front wheel carrier and rear wheel frame, the
The rod chamber of one steering cylinder connects with the rodless cavity of the second steering cylinder, the rodless cavity of the first steering cylinder and the second steering oil
The rod chamber connection of cylinder, hydraulic control system also include control oil circuit, and control oil circuit can control the first steering cylinder and second
It is interconnected between steering cylinder so that fluid mutually compensates for and then makes front wheel carrier and rear wheel frame automatic alignment.It is of the present utility model
The front wheel carrier of tandem roller and the automatic alignment of rear wheel frame can be automatically controlled by control oil circuit, without driver turn side
Aligned to disk to realize, therefore reduce operation difficulty.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the structural representation of the tandem roller of the utility model embodiment；
Fig. 2 to Fig. 4 is that the dual-steel wheel road roller shown in Fig. 1 realizes the change procedure signal that front wheel carrier and rear wheel frame align
Figure.
Each reference represents respectively：
Steel wheel frame before 1-；Steel wheel frame after 2-；3- hydraulic control systems；The steering cylinders of 31- first；The steering cylinders of 32- second；
33- crab row oil cylinders；34- attachment structures；Level sensor in 35-；36- steering gears；37- on-off control valves；38- variable throttle valves；
39- controllers.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of the utility model protection.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that each shown in accompanying drawing for the ease of description
The size of individual part is not to be drawn according to the proportionate relationship of reality.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding
Weigh part for specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms is represented in following accompanying drawing, therefore, once be defined in a certain Xiang Yi accompanying drawing, then with
It need not be further discussed in accompanying drawing afterwards.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
In the following description, alleged " preceding " refers to the side that dual-steel wheel road roller advances；" rear " refers to and " preceding "
Relative side, " left side " and " right side " refer to facing the left and right directions formed during front.
The tandem roller of the utility model embodiment include front-wheel, trailing wheel, the front wheel carrier for installing front-wheel, for pacifying
Fill the rear wheel frame and hydraulic control system of trailing wheel.Hydraulic control system includes the first steering cylinder and the second steering cylinder.First
The both ends of steering cylinder and the both ends of the second steering cylinder are respectively connected with front wheel carrier and rear wheel frame.First steering cylinder has
Rod cavity connects with the rodless cavity of the second steering cylinder, and the rod chamber of the rodless cavity of the first steering cylinder and the second steering cylinder connects
It is logical.Hydraulic control system also includes control oil circuit, and control oil circuit can be controlled between the first steering cylinder and the second steering cylinder
Fluid mutually compensates for and then makes front wheel carrier and rear wheel frame automatic alignment.
In steering pattern, the hydraulic control system of the tandem roller is by controlling the first steering cylinder and second to turn to
Cylinder action controls the tandem roller to turn to；When switching to crab row mode by steering pattern, control oil circuit controls first turn
Mutually compensated for the fluid between oil cylinder and the second steering cylinder and then make front wheel carrier and rear wheel frame automatic alignment and then complete
Into crab row function.In summary, the automatic alignment of the front and rear wheel carrier of the tandem roller of the utility model embodiment can be by controlling
Oil circuit automatically controls, and is aligned to realize without driver turn steering wheel, therefore reduces operation difficulty.
The structure of the tandem roller of the specific embodiment of the utility model one is carried out specifically below according to Fig. 1 to Fig. 4
It is bright.
As shown in figure 1, the tandem roller of the present embodiment is dual-steel wheel road roller.Dual-steel wheel road roller include preceding steel wheel,
Steel wheel and for installing the preceding steel wheel frame 1 of preceding steel wheel and the rear steel wheel frame 2 for steel wheel after installing afterwards.Need what is illustrated herein
It is that the front wheels and rear wheels of the tandem roller of the utility model embodiment are not limited to steel wheel or other materials or knot
The wheel of structure, as long as the function on pressure road can be realized.
As depicted in figs. 1 and 2, the dual-steel wheel road roller of the present embodiment includes the first steering cylinder 31 and the second steering cylinder
32.The cylinder body of first steering cylinder 31 is be hinged with preceding steel wheel frame 1, and the piston rod of the first steering cylinder 31 is be hinged with rear steel wheel frame 2.
Therefore by controlling the first steering cylinder 31 and the second steering cylinder 32 can of stretching to control dual-steel wheel road roller to be turned to.
For example, as shown in Fig. 2 the piston rod of the first steering cylinder 31 of control stretches out and controls the piston rod of the second steering cylinder 32 to retract
Controllable dual-steel wheel road roller turns to the left.Opposite, the piston rod of the first steering cylinder 31 of control is retracted and controls second turn
Controllable dual-steel wheel road roller is stretched out to the piston rod of oil cylinder to turn to the right.
As shown in figure 1, the rodless cavity of the first steering cylinder 31 connects with the first hydraulic fluid port A of steering gear 36, the second steering oil
The rodless cavity of cylinder 32 connects with the second hydraulic fluid port B of steering gear 36.Steering gear 36 controls the first hydraulic fluid port A as oil-feed port or second
Hydraulic fluid port B is as oil-feed port to realize the steering of road roller.In the present embodiment, the rodless cavity of the first steering cylinder 31 and second turn
Connected to the rod chamber of oil cylinder 32 by the first fluid pressure line N, the rod chamber of the first steering cylinder 31 and the second steering cylinder 32
Rodless cavity connected by the second fluid pressure line M, therefore when the first hydraulic fluid port A can rodless cavity with the first steering cylinder 31 simultaneously
And second steering cylinder 32 rod chamber connection, the second hydraulic fluid port B can simultaneously with the rodless cavity of the second steering cylinder and the
The rod chamber connection of one steering cylinder 31, between the rod chamber and rodless cavity of above-mentioned two steering cylinder by fluid pressure line in pairs
It is cross interconnected that the first steering cylinder can be controlled to stretch out the retraction of the second steering cylinder or control the first steering cylinder simultaneously simultaneously
First steering cylinder of retracting stretches out, so that the structure of hydraulic control system is simpler.
Preferably, as shown in figure 1, control oil circuit is arranged at the rodless cavity and the second steering cylinder 32 of the first steering cylinder 31
Rodless cavity between.When the preceding steel wheel frame and rear steel wheel frame automatic alignment for needing to make road roller, as long as controlling control oil circuit
The rodless cavity of first steering cylinder connects with the rodless cavity of the second steering cylinder, now due to the first steering cylinder rodless cavity with
It is mutual between the rodless cavity of the rod chamber and the second steering cylinder of the rod chamber of second steering cylinder and the first steering cylinder
It is connected, therefore complete connection is realized between the first steering cylinder and the second steering cylinder, fluid between the two can be with
Mutually compensate for, therefore can realize the balance of fluid so as to the first steering cylinder between the first steering cylinder and the second steering cylinder
Reach identical with the fluid accommodated in the second steering cylinder, with reference to shown in figure 3, now between preceding steel wheel frame and rear steel wheel frame both ends
Distance it is equal realization align.
Preferably, the first steering cylinder 31 and the cylinder diameter of the cylinder body of the second steering cylinder 32 and the bar footpath of piston rod are homogeneous
Together.It is arranged so that the volume of the fluid accommodated in the first steering cylinder 31 and the second steering cylinder 32 is equal, therefore two
During the fluid of individual steering cylinder is mutually compensated for, the fluid in two steering cylinders will necessarily be made equal so as to reach
The automatic alignment of the preceding steel wheel frame of Balancing relization and rear steel wheel frame.And fluid in two steering cylinders is equal make before steel wheel frame and
Steel wheel frame automatic alignment afterwards, and then improve and align precision.
It is oily between the first steering cylinder 31 and the second steering cylinder 32 to realize in a unshowned embodiment of accompanying drawing
Liquid is mutually compensated for, and control can also be set between the rod chamber of the first steering cylinder 31 and the rod chamber of the second steering cylinder 32
Liquefaction road.Control oil circuit can also be set between the first fluid pressure line N and the second fluid pressure line M.
Preferably, in order that control oil circuit can control the rodless cavity and second steering cylinder 32 of the first steering cylinder 31
Break-make between rodless cavity, as shown in figure 1, being provided with the control oil circuit of the present embodiment for controlling the logical of control oil circuit break-make
Disconnected control valve 37.Carry out front wheel carrier and rear wheel frame when needing to control road roller from steering pattern to crab row mode to switch
To timing, on-off control valve 37 can be controlled to connect；After front wheel carrier and rear wheel frame align, on-off control valve 37 can be controlled disconnected
Open with into crab row mode；When needing to make road roller enter steering pattern, on-off control valve 37 can be controlled to disconnect.
Specifically in the present embodiment, the first hydraulic fluid port of on-off control valve 37 connects with the rodless cavity of the first steering cylinder 31,
Second hydraulic fluid port of on-off control valve 37 connects with the rodless cavity of the second steering cylinder 32, and on-off control valve 37 has the first work
Make position and the second operating position.In the first operating position, the of the first hydraulic fluid port of on-off control valve 37 and on-off control valve 37
Two hydraulic fluid ports connect；In the second operating position, the first hydraulic fluid port of on-off control valve 37 disconnects with the second hydraulic fluid port of on-off control valve 37.
Specifically, bidirectional locking valve is set between the second operating position, the first hydraulic fluid port of on-off control valve 37 and its second hydraulic fluid port.
Specifically, in the present embodiment, on-off control valve 37 is magnetic valve and has Electromagnetic Control end, can pass through control
Electromagnetic Control end obtains electric or dead electricity to control the operating position of on-off control valve 37.And the on-off control valve 37 of the present embodiment is
Cone valve type two-position two-way solenoid valve.
Preferably, control on oil circuit and be additionally provided with the flow control valve connected with on-off control valve 37.Flow control valve
The compression shock that can prevent hydraulic control system in fluid during automatic compensation is set.When on-off control valve 37 is in
It can be zero by controlling the flow that flow control valve is run through during off-state, turn so as to not influence the normal of road roller
To.
In the present embodiment, flow control valve is variable throttle valve 38.Variable throttle valve 38 is arranged at on-off control valve 37
The first hydraulic fluid port and the first steering cylinder 31 rodless cavity between.
Preferably, the hydraulic control system of the present embodiment also includes attachment structure 34 and crab row oil cylinder 33.Attachment structure 34
Both ends be connected respectively with preceding steel wheel frame 1 and rear steel wheel frame 2.The piston rod of crab row oil cylinder 33 is connected with attachment structure 34, double
When steel roller is in steering pattern, the first steering cylinder 31 and the second steering cylinder 32 are acted to control dual-steel wheel road roller
Turn to.Align the preceding steel wheel frame 1 of dual-steel wheel road roller and rear steel wheel frame 2 from steering pattern to crab row mode switching
When, crab row oil cylinder 33 acts and drives preceding steel wheel frame 1 and rear steel wheel frame 2 to move to drive first to turn to by attachment structure 34
The steering cylinder 2 of oil cylinder 1 and second is acted so that the fluid between the first steering cylinder and the second steering cylinder mutually compensates for.This reality
The hydraulic control system of example is applied by setting attachment structure 34 between preceding steel wheel frame 1 and rear steel wheel frame 2 and by crab row oil cylinder 33
Be connected with attachment structure, as long as therefore control crab row cylinder action, active force will necessarily be applied to preceding steel wheel frame and rear steel wheel frame,
And then preceding steel wheel frame and rear steel wheel frame will necessarily be had an impact by after active force to two steering cylinders, and then it can just make two
Fluid between steering cylinder compensates.
In addition, as shown in Figure 3 and Figure 4, after preceding steel wheel frame 1 and rear steel wheel frame 2 align, as long as control crab row oil cylinder 33 is dynamic
Work can just make to produce skew between preceding steel wheel frame 1 and rear steel wheel frame 2 so as to realize crab row.With needing setting two in the prior art
Individual crab row oil cylinder realizes that the control of crab row mode is compared, and the structure of the hydraulic control system of the present embodiment is simple and simple to operate
Fast.
Preferably, as shown in Figures 2 to 4, the first steering cylinder 31 and preceding steel wheel frame 1 are articulated with the first pin joint, and first
Steering cylinder 31 is articulated with the second pin joint with rear steel wheel frame 2.Second steering cylinder 32 is articulated with the 3rd with preceding steel wheel frame 1 and is hinged
Point, the second steering cylinder 32 are articulated with the 4th pin joint with rear steel wheel frame 2.First pin joint and the 3rd pin joint are relative to double steel
The longitudinal centre line of roller be symmetrical arranged and the second pin joint and the 4th pin joint relative to dual-steel wheel road roller longitudinal direction
Center line symmetrical setting.After being arranged so that the fluid between the first steering cylinder and the second steering cylinder compensates,
As shown in figure 3, form rectangle between preceding steel wheel frame 1, the first steering cylinder 31, the steering cylinder 32 of rear steel wheel frame 2 and second.Controlling
Crab row cylinder action processed and to attachment structure apply active force after, as shown in figure 4, preceding steel wheel frame 1, the first steering cylinder 31, after
Crab row can be realized with self-assembling formation parallelogram between the steering cylinder 32 of steel wheel frame 2 and second.Above-mentioned symmetrical structure is set
Put and make it that the control of crab row mode is simple, it is easily operated.
The first end of attachment structure 34 is rotatably coupled with preceding steel wheel frame 1, the second end and the rear steel wheel of attachment structure 34
Frame 2 is rotatably coupled, and the piston rod and attachment structure 34 of crab row oil cylinder 33 pass through the company between first end and the second end
Socket part connects.In order that the torque applied during crab row cylinder action to preceding steel wheel frame and rear steel wheel frame is of different sizes so that preceding steel
Wheel carrier and rear steel wheel frame misplace, the distance between connecting portion and first end and the distance between connecting portion and the second end not phase
Deng.
Preferably, hydraulic control system also includes the middle level sensor being arranged on preceding steel wheel frame 1 and/or rear steel wheel frame 2
35, middle level sensor detects preceding steel wheel frame and whether rear steel wheel frame aligns.Specifically in the present embodiment, middle level sensor 35 is set
In on rear steel wheel frame 2.
Preferably, precision and operating efficiency, the hydraulic control system of the present embodiment are aligned to improve in order to realize to automatically control
System also includes coupling the controller 39 set, the level sensor in of controller 39 with middle level sensor 35 and on-off control valve 37
35 testing result control on-off control valve 37 obtains electric or dead electricity, so as to control the break-make of control oil circuit.
Certainly, the controller 39 of the present embodiment and the first steering cylinder 31, the second steering cylinder 32 and crab row oil cylinder 33 are equal
Coupling is set, therefore can be realized and be automatically controlled, and is improved operating efficiency and is aligned precision.
The course of work of the dual-steel wheel road roller of the present embodiment is described in detail below according to Fig. 2 to Fig. 4：
As shown in Fig. 2 when rear steel wheel frame 2 and the preceding shape of steel wheel frame 1 of dual-steel wheel road roller form an angle, i.e., now the
One steering cylinder 31 is in stretching state, the second steering cylinder 32 is in retracted mode, while the now dead electricity of on-off control valve 37,
In reversible lock stop bit.Crab row mode is now enabled, now, controller control on-off control valve 37 obtains electric with connection position.
Crab row oil cylinder 33 is connected to the past retraction of piston rod of the instruction of crab row and crab row oil cylinder 33 simultaneously, and then to preceding steel wheel frame 1 and rear steel wheel
Frame 2 acts power, and active force caused by preceding steel wheel frame 1 and rear steel wheel frame 2 certainly will turn to the first steering cylinder 31 and second
Oil cylinder 32 has an impact, because the cylinder diameter and bar footpath of the first steering cylinder 31 and the second steering cylinder 32 are completely the same, between it
Rod chamber and rodless cavity between oil mass can be mutually compensated for.The first steering cylinder 31 will be forced to be in retracted mode,
Second steering cylinder 32 is in stretching state, when the first steering cylinder 31 and the second steering cylinder 32 move to parallel position
(as shown in Figure 3), now middle level sensor 35 detect that preceding steel wheel frame 1 and rear steel wheel frame 2 reach aligned position, signal is delivered to
Controller 39.Judged at once after the reception signal of controller 39 and instruct and control on-off control valve 37 to be powered down to bidirectional locking
Position.Now the piston rod of crab row oil cylinder 8 is dislocated toward retraction, the preceding steel wheel frame 1 of control and rear steel wheel frame 2, is finally completed crab action
Make (as shown in Figure 4).
In summary, the dual-steel wheel road roller of the present embodiment at least has following advantage：
Steel wheel frame before the control oil circuit of the dual-steel wheel road roller can control when steering cylinder is in any location status
Automatic alignment is realized with rear steel wheel frame and then enables crab row mode, without thinking that operation aligns, so as to reduce front wheel carrier and trailing wheel
Frame aligns operation difficulty.
And the setting of variable throttle valve can ensure that hydraulic control system is carried out automatically in the fluid of two steering cylinders
Operated steadily during compensation and suppress compression shock.
Finally it should be noted that：Above example is only illustrating the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Specific embodiment of the present utility model can still be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (10)
1. a kind of tandem roller, including front-wheel, trailing wheel, the front wheel carrier for installing front-wheel, the rear wheel frame for installing trailing wheel
And hydraulic control system, the hydraulic control system include the first steering cylinder and the second steering cylinder, first steering oil
The both ends of cylinder and the both ends of second steering cylinder are respectively connected with the front wheel carrier and the rear wheel frame, described first turn
Connected to the rod chamber of oil cylinder with the rodless cavity of second steering cylinder, the rodless cavity of first steering cylinder and described the
The rod chamber connection of two steering cylinders, it is characterised in that the hydraulic control system also includes control oil circuit, the control oil circuit
It can control and be interconnected between first steering cylinder and second steering cylinder so that fluid is mutually compensated for and then made
The front wheel carrier and the rear wheel frame automatic alignment.
2. tandem roller according to claim 1, it is characterised in that the control oil circuit is arranged at described first and turned to
Between the rodless cavity of the rodless cavity of oil cylinder and second steering cylinder；Or the control oil circuit is arranged at described first turn
Rod chamber to oil cylinder and between the rod chamber of second steering cylinder.
3. tandem roller according to claim 2, it is characterised in that be provided with the control oil circuit for controlling institute
State the on-off control valve of control oil circuit break-make.
4. tandem roller according to claim 3, it is characterised in that be additionally provided with the control oil circuit and lead to described
The flow control valve of disconnected control valve series connection.
5. tandem roller according to claim 1, it is characterised in that first steering cylinder turns to described second
The cylinder diameter of the cylinder body of oil cylinder and the bar footpath all same of piston rod.
6. tandem roller according to claim 1, it is characterised in that first steering cylinder is cut with scissors with the front wheel carrier
The first pin joint is connected to, first steering cylinder is articulated with the second pin joint, second steering cylinder with the rear wheel frame
The 3rd pin joint is articulated with the front wheel carrier, second steering cylinder is articulated with the 4th pin joint, institute with the rear wheel frame
The first pin joint and the 3rd pin joint is stated to be symmetrical arranged relative to the longitudinal centre line of the tandem roller and described the
Two pin joints are symmetrical arranged with the 4th pin joint relative to the longitudinal centre line of the tandem roller.
7. tandem roller according to any one of claim 1 to 6, it is characterised in that the hydraulic control system bag
Attachment structure and crab row oil cylinder are included, the both ends of the attachment structure are connected with the front wheel carrier and the rear wheel frame respectively, described
The piston rod or cylinder body of crab row oil cylinder are connected with the attachment structure, described when the tandem roller is in steering pattern
First steering cylinder and second steering cylinder are acted to control the tandem roller to turn to；At the tandem roller
When crab row mode, the crab row cylinder action simultaneously drives the front wheel carrier and the rear wheel frame to move by the attachment structure
And then first steering cylinder and second steering cylinder action are driven so that first steering cylinder and described second
Fluid between steering cylinder mutually compensates for.
8. tandem roller according to claim 7, it is characterised in that the first end of the attachment structure and the front-wheel
Frame is rotatably coupled, and the second end and the rear wheel frame of the attachment structure are rotatably coupled, the work of the crab row oil cylinder
Stopper rod or cylinder body and the attachment structure are connected by the connecting portion between the first end and second end, the company
Socket part and the distance between the first end are unequal with the connecting portion and the distance between second end.
9. tandem roller according to any one of claim 1 to 6, it is characterised in that the hydraulic control system is also
Including the middle level sensor being arranged on the front wheel carrier and/or the rear wheel frame, the middle level sensor detects the front-wheel
Whether frame and the rear wheel frame align.
10. tandem roller according to claim 9, it is characterised in that the hydraulic control system also include with it is described
The controller that middle level sensor and the control oil circuit coupling are set, the controller is according to the detection knot of the middle level sensor
The break-make of the fruit control control oil circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721195618.3U CN207193711U (en) | 2017-09-19 | 2017-09-19 | Tandem roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721195618.3U CN207193711U (en) | 2017-09-19 | 2017-09-19 | Tandem roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207193711U true CN207193711U (en) | 2018-04-06 |
Family
ID=61789540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721195618.3U Active CN207193711U (en) | 2017-09-19 | 2017-09-19 | Tandem roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207193711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518570A (en) * | 2017-09-19 | 2019-03-26 | 徐工集团工程机械股份有限公司 | Tandem roller |
-
2017
- 2017-09-19 CN CN201721195618.3U patent/CN207193711U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518570A (en) * | 2017-09-19 | 2019-03-26 | 徐工集团工程机械股份有限公司 | Tandem roller |
| CN109518570B (en) * | 2017-09-19 | 2024-06-21 | 徐工集团工程机械股份有限公司 | Double-wheel road roller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201792744U (en) | Single-pump dual-motor driving engineering vehicle and hydraulic system and control device thereof | |
| CN102923187B (en) | The follow-up steering control system of multi-wheeler hoisting crane and multi-wheeler hoisting crane | |
| CN104061212B (en) | Electric hydraulic control running system for bracket carrier | |
| CN104443025A (en) | Electro-hydraulic servo pure rolling steering system for multi-axis vehicle and control method | |
| CN103171620B (en) | Multi-axle steering system and multi-axle steering vehicle | |
| CN204341185U (en) | Four-mode steering hydraulic control system and vehicle with same | |
| CN102434512A (en) | Hydraulic cylinder synchronization control loop and crane with same | |
| CN202381427U (en) | Hydraulic oil cylinder synchronization control loop and crane using same | |
| CN104675807B (en) | Differential hydraulic control system and method and crane | |
| CN207193711U (en) | Tandem roller | |
| CN103950870A (en) | Forklift hydraulic system with energy recovery and double-pump oil supply functions | |
| CN102042934A (en) | Durability test method for central rotary joint and special device | |
| CN107461375A (en) | Complete-section tunnel boring machine is hinged hydraulic system | |
| CN109501855A (en) | A kind of multi-mode steering system | |
| CN110497962A (en) | A kind of servo integrated electric hydraulic steering system of straddle carrier volume and its control method | |
| CN105649541B (en) | Dual-polyline variable-amplitude mechanism, dual slope rotary drilling rig and folding mast control method | |
| CN103397677A (en) | Hydraulic excavator movable arm loop based on hydraulic transformer and control method thereof | |
| CN102518031B (en) | Folding system for secondary transfer machine of milling machine and milling machine | |
| CN102874309B (en) | Hoisting crane and steering swivel system thereof and rocking arm | |
| CN108799258A (en) | A kind of swing arm energy-recuperation system | |
| CN202937011U (en) | Boom hydraulic system, boom system and concrete pumping equipment | |
| CN109518570A (en) | Tandem roller | |
| CN202937013U (en) | Boom hydraulic system, boom system and concrete pumping equipment | |
| CN204222964U (en) | Wagon drill | |
| CN202988617U (en) | Rotary hydraulic system of engineering machinery and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |