CN102505620A - Pressure adjusting method and device of paver screed plate pressure reducing device - Google Patents
Pressure adjusting method and device of paver screed plate pressure reducing device Download PDFInfo
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- CN102505620A CN102505620A CN201110354198XA CN201110354198A CN102505620A CN 102505620 A CN102505620 A CN 102505620A CN 201110354198X A CN201110354198X A CN 201110354198XA CN 201110354198 A CN201110354198 A CN 201110354198A CN 102505620 A CN102505620 A CN 102505620A
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- pressure
- lift cylinder
- setting
- leveling cyclinder
- paver
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012795 verification Methods 0.000 claims description 25
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 2
- 238000010409 ironing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000006837 decompression Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000010455 autoregulation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a pressure adjusting method and a pressure adjusting device of a pressure reducing device of a screed of a paver, wherein the method comprises the following steps: detecting the position of a leveling oil cylinder of the paver; and adjusting the pressure of the lifting oil cylinder according to the position of the leveling oil cylinder. Because the pressure of the lifting oil cylinder can be automatically adjusted according to the position of the leveling oil cylinder, the automatic opening of the pressure reducing device and the automatic setting of the pressure of the lifting oil cylinder are realized, and the pressure regulation and control of the ironing plate are more reasonable.
Description
Technical field
The present invention relates to the control technology of engineering machinery, particularly relate to a kind of pressure regulating method and device thereof of paver screed decompressor.
Background technology
In highway construction, paver is a kind of construction equipment that the various materials of road base layer and surface layer is carried out paving operation.Paver can be divided into two kinds of crawler type and rubber-tyreds, and common have road-metal spreading machine, a bituminous concrete paver etc.
Paver is when carrying out paving operation, and the position of screed is to influence pave one of main factor of height of material.When the material water ratio that paves when paver is too high or comparatively loose, though screed can be on the material that paves upper and lower floating, operating angle increases because the existence of self gravitation, descending still can appear in screed, causes the material height that paves to spend low; At this moment; The autoregulation of paver levelling device can not satisfy the highly constant requirement that paves; Need to use screed decompressor (fluid that promptly in the cavity of resorption of lift cylinder, adds certain pressure) to reduce the pressure of screed, to reach the desirable height that paves to material.That is: the sensor of levelling device (for example angular displacement sensor etc.) detects the Uneven road entire signal; The leveling cyclinder of levelling device is adjusted the operating angle of paver screed; When meeting the special material that paves, when surpassing the work adjustable range of levelling device, open the screed decompressor, reduce the pressure of screed through the pressure that changes lift cylinder to material, make levelling device return to the work adjustable range.
In the decompression control system of existing paver screed, when dispatching from the factory, force value is made as steady state value usually; Perhaps, when dispatching from the factory with design of pressure in certain limit, according to the actual situation manual adjustments that paves.
The defective that prior art exists is, if force value is made as steady state value when dispatching from the factory, because of the characteristic difference of the material that paves, there is irrational situation in the force value of setting, and it is highly defective to cause paving; If when dispatching from the factory with design of pressure in certain limit, rely in the paving process and manually go to regulate, this depends on operator's experience, possibly exist pressure to regulate irrational situation equally.
Summary of the invention
The invention provides a kind of pressure regulating method and device thereof of paver screed decompressor, in order to solve the technical problem that there is unreasonable situation in design of pressure in the existing decompression control system.
The pressure regulating method of paver screed decompressor of the present invention comprises:
The position of the leveling cyclinder of A, detection paver;
B, according to the pressure of the position of said leveling cyclinder adjustment lift cylinder.
Wherein, step B comprises:
Whether B1, the position of judging said leveling cyclinder are positioned on the subscript location of setting, if, execution in step B2; Otherwise, execution in step B3;
B2, the pressure of said lift cylinder is heightened process ends;
Whether B3, the position of judging said leveling cyclinder are positioned under the subscript location of setting, if then the pressure of lift cylinder is turned down process ends.
The pressure-regulating device of paver screed decompressor of the present invention comprises:
Detection module is used to detect the position of the leveling cyclinder of said paver;
Adjusting module is used for the pressure according to the position adjustment lift cylinder of said leveling cyclinder.
Wherein, said adjusting module comprises:
First judging unit is used to judge whether the position of said leveling cyclinder is positioned on the subscript location of setting;
Second judging unit is used to judge whether the position of said leveling cyclinder is positioned under the subscript location of setting;
Performance element; Be used for when the position of said leveling cyclinder is positioned on the subscript location of setting; The pressure of said lift cylinder is heightened, and be used for when the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder being turned down.
In technical scheme of the present invention, because the pressure of lift cylinder can be adjusted according to the position of leveling cyclinder automatically, realize the automatic unlatching of decompressor and the automatic setting of lift cylinder pressure, it is more reasonable that the pressure of screed is regulated control.
Description of drawings
Fig. 1 is the inventive method schematic flow sheet;
Fig. 2 is the schematic flow sheet of the inventive method one specific embodiment;
Fig. 3 is apparatus of the present invention sketch map.
The specific embodiment
In order to solve the technical problem that there is unreasonable situation in design of pressure in the existing decompression control system, the invention provides a kind of pressure regulating method of paver screed decompressor and a kind of pressure-regulating device of paver screed decompressor.
As shown in Figure 1, the pressure regulating method of paver screed decompressor of the present invention comprises:
The position of the leveling cyclinder of step 101, detection paver;
Wherein, step 102 comprises:
Whether step 1, the position of judging said leveling cyclinder are positioned on the subscript location of setting, if, execution in step two; Otherwise, execution in step three;
Step 2, the pressure of said lift cylinder is heightened process ends;
Whether step 3, the position of judging said leveling cyclinder are positioned under the subscript location of setting, if then the pressure of lift cylinder is turned down process ends.
In step 102, said pressure with lift cylinder is heightened, and comprising: the pressure of said lift cylinder is improved first step-length of setting; Said pressure with lift cylinder is turned down, and comprising: the pressure of said lift cylinder is reduced by second step-length of setting, and second step-length is less than first step-length.
In step 2, after the pressure of lift cylinder is heightened, and before process ends; Further comprise: whether the pressure of judging lift cylinder is greater than the maximum value of setting; If then the pressure of lift cylinder is adjusted into the maximum value of setting, process ends; Otherwise, after paver paves the very first time section that walking sets, return step 1.
In step 3, after the pressure of lift cylinder is turned down, and before process ends; Further comprise: whether the pressure of judging lift cylinder is less than the minimum value of setting; If then the pressure of lift cylinder is adjusted into the minimum value of setting, process ends; Otherwise, after paver paves second time period that walking sets, return step 3.
In step 3, be not positioned under the subscript location of setting if confirm the position of leveling cyclinder, then step 3 further comprises: after paver paves the 3rd time period that walking sets, with the verification number of times increase of preserving once; Whether judge the verification number of times of preserving greater than the verification number of times of setting, if, process ends; Otherwise, return step 1.
Preferably the initial pressure of said lift cylinder is 1/4th of the difference of the maximum value set and minimum value.
Wherein, step 102 also can be to comprise:
When the position of said leveling cyclinder is positioned on the subscript location of setting, the pressure of said lift cylinder is heightened;
When the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder is turned down.
As shown in Figure 2, the pressure regulating method concrete steps of paver screed decompressor of the present invention are:
Step 201:, demarcate the last detecting position (being the subscript location) and the following detecting position (being the subscript location) of leveling cyclinder according to the actual situation that paves.
Step 202: paver carries out paving operation, and leveling system is in automatic detected state, and screed is in quick condition.
Step 203: the paver operating personnel get into human-computer interaction interface, choose the auto-set mode of decompressor.
Step 204: the initial pressure P that sets lift cylinder
1=P
0, P wherein
0=0.25 (P
Max-P
Min), (P
MaxBe the pressure maximum value that lift cylinder allows, P
MinBe the pressure minimum value that lift cylinder allows, help saving in the subsequent step pressure self-regulating computing time like this.
Step 205: paver pave the walking a period of time T
1Because the screed leveling has certain hysteresis quality, therefore, need, paver carry out next step again after paving walking a period of time.
Step 206: the position of detecting leveling cyclinder also judges whether between subscript location and subscript location, if, execution in step 220, otherwise, execution in step 207 continued.
Step 207: whether the position of judging leveling cyclinder is positioned on the subscript location, if, execution in step 208, otherwise, execution in step 212.
Step 208: the pressure P of setting lift cylinder
1=P
1+ a, wherein a is a step-length, is about to original pressure P
1Heighten the pressure of an a step-length.
Step 209: whether the P1 after judgement is heightened is greater than P
Max, if, execution in step 210, otherwise, execution in step 211.
Step 210: the pressure P of setting lift cylinder
1=P
Max, and execution in step 220.
Step 211: paver pave the walking a period of time T
2The position of leveling cyclinder is detected in the back, and returns step 207.
Step 212: whether the position of judging leveling cyclinder is positioned under the subscript location, if, execution in step 213, otherwise, execution in step 217.
Step 213: the pressure P of setting lift cylinder
1=P
1-b, wherein b is a step-length, and b＜a, is about to original pressure P
1Turn down the pressure of a b step-length.Step-length b is less than step-length a, also is in order to save in the subsequent step pressure self-regulating computing time, realizes that big step-length advances, and little step-length is returned, and reaches desirable pressure faster.
Step 214: judge the P after turning down
1Whether less than P
Min, if, execution in step 215, otherwise, execution in step 216.
Step 215: the pressure P of setting lift cylinder
1=P
Min, and execution in step 220.
Step 216: paver pave the walking a period of time T
3The position of leveling cyclinder is detected in the back, and returns step 212.
Step 217: the pressure P that keeps lift cylinder
1Constant, paver pave the walking a period of time T4.
Step 218: with the increase of verification number of times once, i.e. verification times N
1=N
1+ 1, the verification times N
1Initial value be 0.
Step 219: judge the verification times N
1Whether greater than the verification times N of setting, if, execution in step 220, otherwise, step 207 returned.For example, when the verification number of times of setting was 3, execution in step 220 again after step 207, step 212, step 217, step 218 and step 219 circulation 3 times had promptly been carried out 3 verifications.
Step 220: in the force value of human-computer interaction interface display setting and keep-up pressure constantly, flow process finishes.
Can find out from above control flow; Choose the auto-set mode of decompressor as operating personnel after; The screed decompressor is opened automatically, according to the position detection signal of leveling system leveling cyclinder, adjusts the pressure of lift cylinder automatically; And be presented on the human-computer interaction interface, it is more reasonable that the pressure of screed is regulated control.
As shown in Figure 3, the pressure-regulating device of paver screed decompressor of the present invention comprises:
Adjusting module 302 is used for the pressure according to the position adjustment lift cylinder of said leveling cyclinder.
Wherein, said adjusting module 302 comprises:
First judging unit is used to judge whether the position of said leveling cyclinder is positioned on the subscript location of setting;
Second judging unit is used to judge whether the position of said leveling cyclinder is positioned under the subscript location of setting;
Performance element; Be used for when the position of said leveling cyclinder is positioned on the subscript location of setting; The pressure of said lift cylinder is heightened, and be used for when the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder being turned down.
Further, said performance element is used for when the position of said leveling cyclinder is positioned on the subscript location of setting, and the pressure of said lift cylinder is improved first step-length of setting.
Further, said performance element is used for when the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder is reduced by second step-length of setting, and second step-length is less than first step-length.
Said adjusting module further comprises:
The 3rd judging unit, whether the pressure that is used for after said performance element is heightened the pressure of said lift cylinder, judging lift cylinder is greater than the maximum value of setting; When the pressure of lift cylinder is not more than the maximum value of setting, after paver paves the very first time section that walking sets, triggers first judging unit and carry out said judgement;
Then said performance element is used for the pressure of lift cylinder being adjusted into the maximum value of setting when the pressure of lift cylinder during greater than the maximum value set.
Said adjusting module further comprises:
The 4th judging unit, whether the pressure that is used for after said performance element is turned down the pressure of said lift cylinder, judging lift cylinder is less than the minimum value of setting; When the pressure of lift cylinder is not less than the minimum value of setting, after paver paves second time period that walking sets, triggers second judging unit and carry out said judgement;
Then said performance element is used for the pressure of lift cylinder being adjusted into the minimum value of setting when the pressure of lift cylinder during less than the minimum value set.
Said adjusting module further comprises:
The 5th judging unit, whether the verification number of times that is used to judge preservation is greater than the verification number of times of setting; When the verification number of times of preserving is not more than the verification number of times of setting, will triggers first judging unit and carry out said judgement;
Then said performance element; Be used on the position of said leveling cyclinder is not positioned at the subscript location of setting and when not being positioned under the subscript location of setting; And after paver paves the 3rd time period that walking sets; With the verification number of times increase of preserving once, and with the verification number of times of preserving pass to the 5th judging unit.
Preferably, the initial pressure of said lift cylinder is 1/4th of the difference of the maximum value set and minimum value.
Wherein, said adjusting module also can comprise:
Performance element when being used for being positioned on the subscript location of setting in the position of said leveling cyclinder, is heightened the pressure of said lift cylinder; When the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder is turned down.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. the pressure regulating method of a paver screed decompressor is characterized in that, said method comprises:
The position of the leveling cyclinder of A, detection paver;
B, according to the pressure of the position of said leveling cyclinder adjustment lift cylinder.
2. pressure regulating method as claimed in claim 1 is characterized in that step B comprises:
Whether B1, the position of judging said leveling cyclinder are positioned on the subscript location of setting, if, execution in step B2; Otherwise, execution in step B3;
B2, the pressure of said lift cylinder is heightened process ends;
Whether B3, the position of judging said leveling cyclinder are positioned under the subscript location of setting, if then the pressure of lift cylinder is turned down process ends.
3. pressure regulating method as claimed in claim 2 is characterized in that, said pressure with lift cylinder is heightened, and comprising:
The pressure of said lift cylinder is improved first step-length of setting.
4. pressure regulating method as claimed in claim 3 is characterized in that, said pressure with lift cylinder is turned down, and comprising:
The pressure of said lift cylinder is reduced by second step-length of setting, and second step-length is less than first step-length.
5. pressure regulating method as claimed in claim 2 is characterized in that, among the step B2, after the pressure of lift cylinder is heightened, and before process ends, further comprises:
Whether the pressure of judging lift cylinder greater than the maximum value of setting, if then the pressure of lift cylinder is adjusted into the maximum value of setting, process ends; Otherwise, after paver paves the very first time section that walking sets, return step B1.
6. pressure regulating method as claimed in claim 2 is characterized in that, among the step B3, after the pressure of lift cylinder is turned down, and before process ends, further comprises:
Whether the pressure of judging lift cylinder less than the minimum value of setting, if then the pressure of lift cylinder is adjusted into the minimum value of setting, process ends; Otherwise, after paver paves second time period that walking sets, return step B3.
7. pressure regulating method as claimed in claim 2 is characterized in that, among the step B3, is not positioned under the subscript location of setting if confirm the position of leveling cyclinder, further comprises:
After paver paves the 3rd time period that walking sets, once with the verification number of times increase of preserving;
Whether judge the verification number of times of preserving greater than the verification number of times of setting, if, process ends; Otherwise, return step B1.
8. pressure regulating method as claimed in claim 1 is characterized in that, the initial pressure of said lift cylinder is 1/4th of the difference of the maximum value set and minimum value.
9. pressure regulating method as claimed in claim 1 is characterized in that step B comprises:
When the position of said leveling cyclinder is positioned on the subscript location of setting, the pressure of said lift cylinder is heightened;
When the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder is turned down.
10. the pressure-regulating device of a paver screed decompressor is characterized in that, comprising:
Detection module is used to detect the position of the leveling cyclinder of said paver;
Adjusting module is used for the pressure according to the position adjustment lift cylinder of said leveling cyclinder.
11. pressure-regulating device as claimed in claim 10 is characterized in that, said adjusting module comprises:
First judging unit is used to judge whether the position of said leveling cyclinder is positioned on the subscript location of setting;
Second judging unit is used to judge whether the position of said leveling cyclinder is positioned under the subscript location of setting;
Performance element; Be used for when the position of said leveling cyclinder is positioned on the subscript location of setting; The pressure of said lift cylinder is heightened, and be used for when the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder being turned down.
12. pressure-regulating device as claimed in claim 11 is characterized in that, said performance element is used for when the position of said leveling cyclinder is positioned on the subscript location of setting, and the pressure of said lift cylinder is improved first step-length of setting.
13. pressure-regulating device as claimed in claim 12; It is characterized in that said performance element is used for when the position of said leveling cyclinder is positioned under the subscript location of setting; The pressure of said lift cylinder is reduced by second step-length of setting, and second step-length is less than first step-length.
14. pressure-regulating device as claimed in claim 11 is characterized in that, said adjusting module further comprises:
The 3rd judging unit, whether the pressure that is used for after said performance element is heightened the pressure of said lift cylinder, judging lift cylinder is greater than the maximum value of setting; When the pressure of lift cylinder is not more than the maximum value of setting, after paver paves the very first time section that walking sets, triggers first judging unit and carry out said judgement;
Then said performance element is used for the pressure of lift cylinder being adjusted into the maximum value of setting when the pressure of lift cylinder during greater than the maximum value set.
15. pressure-regulating device as claimed in claim 11 is characterized in that, said adjusting module further comprises:
The 4th judging unit, whether the pressure that is used for after said performance element is turned down the pressure of said lift cylinder, judging lift cylinder is less than the minimum value of setting; When the pressure of lift cylinder is not less than the minimum value of setting, after paver paves second time period that walking sets, triggers second judging unit and carry out said judgement;
Then said performance element is used for the pressure of lift cylinder being adjusted into the minimum value of setting when the pressure of lift cylinder during less than the minimum value set.
16. pressure-regulating device as claimed in claim 11 is characterized in that, said adjusting module further comprises:
The 5th judging unit, whether the verification number of times that is used to judge preservation is greater than the verification number of times of setting; When the verification number of times of preserving is not more than the verification number of times of setting, will triggers first judging unit and carry out said judgement;
Then said performance element; Be used on the position of said leveling cyclinder is not positioned at the subscript location of setting and when not being positioned under the subscript location of setting; And after paver paves the 3rd time period that walking sets; With the verification number of times increase of preserving once, and with the verification number of times of preserving pass to the 5th judging unit.
17. pressure-regulating device as claimed in claim 10 is characterized in that, the initial pressure of said lift cylinder is 1/4th of the difference of the maximum value set and minimum value.
18. pressure-regulating device as claimed in claim 10 is characterized in that, said adjusting module comprises:
Performance element when being used for being positioned on the subscript location of setting in the position of said leveling cyclinder, is heightened the pressure of said lift cylinder; When the position of said leveling cyclinder is positioned under the subscript location of setting, the pressure of said lift cylinder is turned down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354198.XA CN102505620B (en) | 2011-11-10 | 2011-11-10 | Pressure adjusting method and device of paver screed plate pressure reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354198.XA CN102505620B (en) | 2011-11-10 | 2011-11-10 | Pressure adjusting method and device of paver screed plate pressure reducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102505620A true CN102505620A (en) | 2012-06-20 |
| CN102505620B CN102505620B (en) | 2014-01-01 |
Family
ID=46217749
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110354198.XA Active CN102505620B (en) | 2011-11-10 | 2011-11-10 | Pressure adjusting method and device of paver screed plate pressure reducing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585003A (en) * | 2021-07-28 | 2021-11-02 | 徐工集团工程机械股份有限公司道路机械分公司 | Spreading machine and spreading method thereof |
| CN113756159A (en) * | 2021-09-27 | 2021-12-07 | 蓝海建设集团有限公司 | Double-layer paving process for asphalt pavement |
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| EP0235331A1 (en) * | 1986-03-04 | 1987-09-09 | SIMESA Socièta Italiana Montaggi e Servizi Affini S.p.A. | Device for controlling the pressure upon the ground of a vibrating levelling unit of a vibratory finishing machine for road paving |
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| CN201678934U (en) * | 2009-11-27 | 2010-12-22 | 徐州凯莫尔重工科技有限公司 | Protection device for ironing plate of spreading machine |
| CN201778272U (en) * | 2010-09-07 | 2011-03-30 | 三一重工股份有限公司 | Control device for drawing cylinder of screed plate on paver as well as paver |
| CN102094381A (en) * | 2010-12-24 | 2011-06-15 | 三一重工股份有限公司 | Tow arm of paver capable of adjusting angle and paver |
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2011
- 2011-11-10 CN CN201110354198.XA patent/CN102505620B/en active Active
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|---|---|---|---|---|
| US4026658A (en) * | 1974-07-26 | 1977-05-31 | Barber-Greene Company | Automatic support system for a screed |
| EP0235331A1 (en) * | 1986-03-04 | 1987-09-09 | SIMESA Socièta Italiana Montaggi e Servizi Affini S.p.A. | Device for controlling the pressure upon the ground of a vibrating levelling unit of a vibratory finishing machine for road paving |
| CN2658209Y (en) * | 2003-10-30 | 2004-11-24 | 长沙中联重工科技发展股份有限公司 | Automatic levelling device of paver with two-stage regulation |
| CN201678934U (en) * | 2009-11-27 | 2010-12-22 | 徐州凯莫尔重工科技有限公司 | Protection device for ironing plate of spreading machine |
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| CN201778272U (en) * | 2010-09-07 | 2011-03-30 | 三一重工股份有限公司 | Control device for drawing cylinder of screed plate on paver as well as paver |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585003A (en) * | 2021-07-28 | 2021-11-02 | 徐工集团工程机械股份有限公司道路机械分公司 | Spreading machine and spreading method thereof |
| CN113585003B (en) * | 2021-07-28 | 2023-03-21 | 徐工集团工程机械股份有限公司道路机械分公司 | Spreading machine and spreading method thereof |
| CN113756159A (en) * | 2021-09-27 | 2021-12-07 | 蓝海建设集团有限公司 | Double-layer paving process for asphalt pavement |
| CN113756159B (en) * | 2021-09-27 | 2022-09-02 | 蓝海建设集团有限公司 | Double-layer paving process for asphalt pavement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102505620B (en) | 2014-01-01 |
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