CN102635055B - Ironing board of asphalt paver with downward deformation by being pre-pressed by strut and pull rods - Google Patents
Ironing board of asphalt paver with downward deformation by being pre-pressed by strut and pull rods Download PDFInfo
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- CN102635055B CN102635055B CN201210131226.6A CN201210131226A CN102635055B CN 102635055 B CN102635055 B CN 102635055B CN 201210131226 A CN201210131226 A CN 201210131226A CN 102635055 B CN102635055 B CN 102635055B
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- screed
- support
- basic segment
- ironing board
- lengthening section
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Abstract
The invention discloses an ironing board of an asphalt paver with downward deformation by being pre-pressed by strut and pull rods. The ironing board comprises a base segment ironing board and a mechanically assembled and widened ironing board constituted by a plurality of lengthened segment ironing boards, wherein the base segment ironing board is formed by connecting two single-segment base segment ironing boards; a base segment ironing board support is arranged on each single-segment base segment ironing board, a lengthened segment ironing board support is arranged on each lengthened segment ironing board, and a plurality of strut and pull rods are arranged between the two base segment ironing board supports and a plurality of lengthened segment ironing board supports; and the left side and right side of the mechanically assembled and widened ironing board are symmetrically gradually downwards inclined and deformed along the normal line direction of the bottom surface of the mechanically assembled and widened ironing board under the action of the plurality of strut and pull rods, the downward inclination deformation amount h is 0-60mm, and the greater the width of the mechanically assembled and widened ironing board, the bigger the value of h. The ironing board disclosed by the invention has the advantages of reasonable design, convenience in processing and manufacturing, convenience and quickness in operation, low implementation cost, wide range of application, and capability of effectively solving the thermal deformation problem of the ironing board of the paver during the working process.
Description
Technical field
The present invention relates to a kind of paver screed, especially relate to a kind of ironing plate of asphalt spreader supportting pull bar precompressed and be out of shape downwards.
Background technology
Screed, as the core work device of asphalt paver, directly decides spreading quality and the functional performance of machine.At present, domestic and international ironing plate of asphalt spreader all adopts the rectangular box structure of Plate Welding, and bottom has been bolted Wear-resisting bottom plate.When pave hot-mix asphalt mixture time, the high-temperature that paver screed base plate will be heated to more than 130 DEG C, and screed casing upper part is in ambient temperature conditions.Because screed body structure upper and lower temperature difference is larger, the swell increment being in the lower part screed of high temperature is much larger than the swell increment of upper part screed being in low temperature, thus cause whole screed two ends to occur upwarping phenomenon, cause the decline of paving concrete pavement planeness thus, have a strong impact on the quality of construction of the highway.
In recent years, large width paver and modified asphalt mixture obtain application in Expressway Construction, and the flatness requirement of user to road construction is also more and more higher.For the construction of the high temperature material spreader such as increase and modified asphalt mixture of paver paving width, the heat distortion amount at screed two ends all can be caused to enlarge markedly.Existing screed thermal deformation suppressing way, mainly reserves heat distortion amount by screed casing and compensates thermal deformation, and this needs to change the physical dimension of screed, and small-sized due to reserved heat distortion amount, its processing and installation difficulty very large.And current most of ironing plate of asphalt spreader does not take effective thermal deformation suppressing way, work progress screed is heated generation deflection, has had a strong impact on the operation quality of paving concrete pavement.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of ironing plate of asphalt spreader supportting pull bar precompressed and be out of shape downwards is provided, it is rationally novel in design, processing and fabricating is convenient, use simple operation, realize cost low, applied widely, effectively can solve the thermal deformation problem of the paver screed course of work, improve the spreading evenness on road surface.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of ironing plate of asphalt spreader supportting pull bar precompressed and be out of shape downwards, comprise by basic segment screed and the assembled flared crossing screed of machinery that forms of the symmetrical multiple lengthening section screeds being arranged on the basic segment screed left and right sides successively, described basic segment screed is connected to form by the single hop basic segment screed that two, left and right is symmetrical, it is characterized in that: each described single hop basic segment screed is provided with a basic segment screed support, each described lengthening section screed is provided with a lengthening section screed support, many support pull bars are provided with between two described basic segment screed supports and multiple described lengthening section screed support, one end of described support pull bar is connected with described basic segment screed support by the spiro rod length adjusting device be arranged on described basic segment screed support, the other end of described support pull bar is connected with described lengthening section screed support by the spiro rod length adjusting device be arranged on described lengthening section screed support, the left and right sides of the assembled flared crossing screed of described machinery is symmetrical gradually along the downward-sloping distortion of normal direction of the assembled flared crossing screed bottom surface of machinery under the effect of many described support pull bars, the deflection h of the described machinery downward-sloping distortion in end, two ends, assembled flared crossing screed left and right is 0 ~ 60mm, the width of the assembled flared crossing screed of described machinery is larger, and the value of h is larger.
The ironing plate of asphalt spreader that above-mentioned support pull bar precompressed is out of shape downwards, it is characterized in that: described basic segment screed Bracket setting is above the end, one end that described single hop basic segment screed is connected with described lengthening section screed, intermediate support is provided with above the end, one end that described single hop basic segment screed is connected with described single hop basic segment screed, one or more support bar is provided with between intermediate support on same described single hop basic segment screed and basic segment screed support, one end of described support bar is connected with described intermediate support by the spiro rod length adjusting device be arranged on described intermediate support, the other end of described support bar is connected with described basic segment screed support by the spiro rod length adjusting device be arranged on described basic segment screed support, be provided with one or more crossbeam between two described basic segment screed supports, the two ends of described crossbeam are corresponding to be respectively fixedly connected with two described basic segment screed supports, be provided with screed camber regulating mechanism between two described intermediate supports, the two ends of described screed camber regulating mechanism are corresponding to be respectively fixedly connected with two described intermediate supports.
The ironing plate of asphalt spreader that above-mentioned support pull bar precompressed is out of shape downwards, is characterized in that: be provided with one or more between each described basic segment screed support and each described lengthening section screed support and support pull bar.
The ironing plate of asphalt spreader that above-mentioned support pull bar precompressed is out of shape downwards, is characterized in that: the width of described single hop basic segment screed is 1.25m ~ 1.5m, and the width of described basic segment screed is 2.5m ~ 3m, and the width of described lengthening section screed is
wherein L is integer and value is 1 ~ 7.
The ironing plate of asphalt spreader that above-mentioned support pull bar precompressed is out of shape downwards, is characterized in that: between two described single hop basic segment screeds, be all bolted to connection between described single hop basic segment screed and adjacent described lengthening section screed and between adjacent two lengthening section screeds.
The present invention compared with prior art has the following advantages:
1, the present invention is rationally novel in design, processing and fabricating is convenient, use simple operation, by adjusting screw(rod) length adjustment device, many support pull bars are made to be in pressured state, and then make the left and right sides of the assembled flared crossing screed of machinery symmetrical gradually along the downward-sloping distortion of normal direction of the assembled flared crossing screed bottom surface of machinery under the effect of many described support pull bars, what compensate that screed work is heated with this is bent upwards distortion, thus normal screed flat configuration when ensure that paving operation, effectively improve the spreading evenness on road surface.
2, to change the regulative mode of screed support pull bar length simple in practical work process in the present invention, avoids complicated processing technique and the assembly difficulty of existing compensation way, reduce cost of production simultaneously, its thermal deformation suppressing Be very effective and be convenient to application.
3, of the present invention to realize cost low, is applicable to the screed of various width, applied widely, effectively can solve the thermal deformation problem of the paver screed course of work.
In sum, the present invention is rationally novel in design, and processing and fabricating is convenient, uses simple operation, realizes cost low, applied widely, effectively can solve the thermal deformation problem of the paver screed course of work, improve the spreading evenness on road surface.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-single hop basic segment screed; 2-lengthening section screed; 3-basic segment screed support;
4-lengthening section screed support; 5-supports pull bar; 6-spiro rod length adjusting device;
7-intermediate support; 8-support bar; 9-crossbeam;
10-screed camber regulating mechanism; 11-bolt.
Detailed description of the invention
As shown in Figure 1, the present invention includes by basic segment screed and the assembled flared crossing screed of machinery that forms of the symmetrical multiple lengthening section screeds 2 being arranged on the basic segment screed left and right sides successively, described basic segment screed is connected to form by the single hop basic segment screed 1 that two, left and right is symmetrical, each described single hop basic segment screed 1 is provided with a basic segment screed support 3, each described lengthening section screed 2 is provided with a lengthening section screed support 4, many support pull bars 5 are provided with between two described basic segment screed supports 3 and multiple described lengthening section screed support 4, one end of described support pull bar 5 is connected with described basic segment screed support 3 by the spiro rod length adjusting device 6 be arranged on described basic segment screed support 3, the other end of described support pull bar 5 is connected with described lengthening section screed support 4 by the spiro rod length adjusting device 6 be arranged on described lengthening section screed support 4, the left and right sides of the assembled flared crossing screed of described machinery is symmetrical gradually along the downward-sloping distortion of normal direction of the assembled flared crossing screed bottom surface of machinery under the effect of many described support pull bars 5, the deflection h of the described machinery downward-sloping distortion in end, two ends, assembled flared crossing screed left and right is 0 ~ 60mm, the width of the assembled flared crossing screed of described machinery is larger, and the value of h is larger.
During specific implementation, the deflection h of the described machinery downward-sloping distortion in end, two ends, assembled flared crossing screed left and right is set by the screwing length of adjusting screw(rod) length adjustment device 6 with support pull bar 5, and the value of h changes with the change of the assembled flared crossing screed width of machinery; When paving heat mixture, width is less than or equal to the assembled flared crossing screed of machinery of 6mm, because width is little, without the need to making the downward-sloping distortion of normal direction along the assembled flared crossing screed bottom surface of machinery under the effect of many described support pull bars 5 of the left and right sides of the assembled flared crossing screed of described machinery, namely the value of h is 0, just can ensure paving concrete pavement quality; when the width of the assembled flared crossing screed of machinery is greater than 6mm, the integral rigidity of the assembled flared crossing screed of machinery is deteriorated gradually, need to make the left and right sides of the assembled flared crossing screed of described machinery symmetrical gradually along the downward-sloping distortion of normal direction of the assembled flared crossing screed bottom surface of machinery under the effect of many described support pull bars 5, the deflection h of the described machinery downward-sloping distortion in end, two ends, assembled flared crossing screed left and right should equal to support the normal direction heat distortion amount upwards that pull bar 5 does not work the assembled flared crossing screed bottom surface of machinery, edge, the left and right sides of supportting described machinery assembled flared crossing screed when drawing effect, so, machinery assembled flared crossing screed pave heat mixture time, under the effect of supportting pull bar 5, the left and right sides of the assembled flared crossing screed of described machinery is symmetrical can compensate for supportting pull bar 5 and do not play the normal direction thermal deformation upwards of the left and right sides along the assembled flared crossing screed bottom surface of machinery of described machinery assembled flared crossing screed when effect is drawn in support along the inclination and distortion that the normal direction of the assembled flared crossing screed bottom surface of machinery is downward gradually just, thus make the base plate of the base plate of basic segment screed and each lengthening section screed 2 still remain on a horizontal plane, and then effectively ensure that planeness needed for paving concrete pavement, because paving width is larger, the left and right sides of the assembled flared crossing screed of described machinery is also larger along the normal direction heat distortion amount upwards of the assembled flared crossing screed bottom surface of machinery, therefore, the width of the assembled flared crossing screed of described machinery is larger, and the value of h is larger.
As shown in Figure 1, in the present embodiment, described basic segment screed support 3 is arranged on above the end, one end that described single hop basic segment screed 1 is connected with described lengthening section screed 2, intermediate support 7 is provided with above the end, one end that described single hop basic segment screed 1 is connected with described single hop basic segment screed 1, one or more support bar 8 is provided with between intermediate support 7 on same described single hop basic segment screed 1 and basic segment screed support 3, one end of described support bar 8 is connected with described intermediate support 7 by the spiro rod length adjusting device 6 be arranged on described intermediate support 7, the other end of described support bar 8 is connected with described basic segment screed support 3 by the spiro rod length adjusting device 6 be arranged on described basic segment screed support 3, be provided with one or more crossbeam 9 between two described basic segment screed supports 3, the two ends of described crossbeam 9 are corresponding to be respectively fixedly connected with two described basic segment screed supports 3, be provided with screed camber regulating mechanism 10 between two described intermediate supports 7, the two ends of described screed camber regulating mechanism 10 are corresponding to be respectively fixedly connected with two described intermediate supports 7.
In the present embodiment, be provided with one or more between each described basic segment screed support 3 and each described lengthening section screed support 4 and support pull bar 5.
In actual processing and making process, the width of described single hop basic segment screed 1 is 1.25m ~ 1.5m, and the width of described basic segment screed is 2.5m ~ 3m, and the width of described lengthening section screed 2 is
wherein L is integer and value is 1 ~ 7.Which kind of, as single hop basic segment screed 1 and the lengthening section screed 2 of selecting width, need to select flexibly according to actual paving width.
In the present embodiment, between two described single hop basic segment screeds 1, be all fixedly connected with by bolt 11 between described single hop basic segment screed 1 and adjacent described lengthening section screed 2 and between adjacent two lengthening section screeds 2.
Particularly, in the present embodiment, the quantity of described lengthening section screed 2 is six, six described lengthening section screed 2 symmetries are arranged on the basic segment screed left and right sides, the width of described single hop basic segment screed 1 is 1.25m, and two width are that the single hop basic segment screed 1 of 1.25m connects to form the basic segment screed that a width is 2.5m; The width of six described lengthening section screeds 2 is followed successively by 0.25m, 1.5m, 1.5m, 1.5m, 1.5m and 0.25m from left to right; The assembled flared crossing screed of machinery that a width is 9m is constituted by two single hop basic segment screeds 1 and six lengthening section screeds 2.Under original state after finishing assembly, the base plate of two single hop basic segment screeds 1 and the base plate of six lengthening section screeds 2 are all in same level, because screed is when carrying out paving operation, its base plate needs to be heated to uniform temperature, better planeness and compactness can be obtained, but, heating makes to be in the swell increment of the screed base plate under high temperature much larger than the swell increment of the upper part screed be under low temperature, causes screed generation thermal deformation, by screed bottom plate heating to 130 DEG C, after screed is heated, whole screed produces perpendicular to the thermal deformation upwards of screed base plate normal, by screed heat distortion test, screed heat distortion amount is measured, screed heat distortion amount increases gradually from centre to left and right sides symmetry, according to the heat distortion amount recorded, by regulating the screwing length at many support pull bar 5 two ends and spiro rod length adjusting device 6, many support pull bars 5 are made to be in pressured state, and make each lengthening section screed 2 produce an and prebuckling deflection that size corresponding contrary with heat distortion amount direction thus.The coordination of each support pull bar 5 deflection should be noted in adjustment process, produce torsional deformation to prevent screed.So, screed pave heat mixture time, prebuckling deflection can compensate heat distortion amount just, thus the base plate of the base plate of basic segment screed and each lengthening section screed 2 is still maintained at the same horizontal plane, and then effectively ensure that the planeness needed for paving concrete pavement and compactness.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (4)
1. the ironing plate of asphalt spreader supportting pull bar precompressed and be out of shape downwards, comprise by basic segment screed and the assembled flared crossing screed of machinery that forms of the symmetrical multiple lengthening section screeds (2) being arranged on the basic segment screed left and right sides successively, described basic segment screed is connected to form by the single hop basic segment screed (1) that two, left and right is symmetrical, it is characterized in that: each described single hop basic segment screed (1) is provided with a basic segment screed support (3), each described lengthening section screed (2) is provided with a lengthening section screed support (4), many support pull bars (5) are provided with between two described basic segment screed supports (3) and multiple described lengthening section screed support (4), one end of described support pull bar (5) is connected with described basic segment screed support (3) by the spiro rod length adjusting device (6) be arranged on described basic segment screed support (3), the other end of described support pull bar (5) is connected with described lengthening section screed support (4) by the spiro rod length adjusting device (6) be arranged on described lengthening section screed support (4), the left and right sides of the assembled flared crossing screed of described machinery is symmetrical gradually along the downward-sloping distortion of normal direction of the assembled flared crossing screed bottom surface of machinery under the effect of many described support pull bars (5), the deflection h of the described machinery downward-sloping distortion in end, two ends, assembled flared crossing screed left and right is 0 ~ 60mm, the width of the assembled flared crossing screed of described machinery is larger, and the value of h is larger, described basic segment screed support (3) is arranged on above the end, one end that described single hop basic segment screed (1) is connected with described lengthening section screed (2), intermediate support (7) is provided with above the end, one end that described single hop basic segment screed (1) is connected with described single hop basic segment screed (1), be positioned between intermediate support (7) on same described single hop basic segment screed (1) and basic segment screed support (3) and be provided with one or more support bar (8), one end of described support bar (8) is connected with described intermediate support (7) by the spiro rod length adjusting device (6) be arranged on described intermediate support (7), the other end of described support bar (8) is connected with described basic segment screed support (3) by the spiro rod length adjusting device (6) be arranged on described basic segment screed support (3), be provided with one or more crossbeam (9) between two described basic segment screed supports (3), the two ends of described crossbeam (9) are corresponding to be respectively fixedly connected with two described basic segment screed supports (3), be provided with screed camber regulating mechanism (10) between two described intermediate supports (7), the two ends of described screed camber regulating mechanism (10) are corresponding to be respectively fixedly connected with two described intermediate supports (7).
2. according to the ironing plate of asphalt spreader that support pull bar according to claim 1 precompressed is out of shape downwards, it is characterized in that: be provided with one or more between each described basic segment screed support (3) and each described lengthening section screed support (4) and support pull bar (5).
3. according to the ironing plate of asphalt spreader that support pull bar according to claim 2 precompressed is out of shape downwards, it is characterized in that: the width of described single hop basic segment screed (1) is 1.25m ~ 1.5m, the width of described basic segment screed is 2.5m ~ 3m, and the width of described lengthening section screed (2) is
wherein L is integer and value is 1 ~ 7.
4. according to the ironing plate of asphalt spreader that support pull bar according to claim 2 precompressed is out of shape downwards, it is characterized in that: be all fixedly connected with by bolt (11) between two described single hop basic segment screeds (1), between described single hop basic segment screed (1) and adjacent described lengthening section screed (2) and between adjacent two lengthening section screeds (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210131226.6A CN102635055B (en) | 2012-04-28 | 2012-04-28 | Ironing board of asphalt paver with downward deformation by being pre-pressed by strut and pull rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210131226.6A CN102635055B (en) | 2012-04-28 | 2012-04-28 | Ironing board of asphalt paver with downward deformation by being pre-pressed by strut and pull rods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102635055A CN102635055A (en) | 2012-08-15 |
| CN102635055B true CN102635055B (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210131226.6A Expired - Fee Related CN102635055B (en) | 2012-04-28 | 2012-04-28 | Ironing board of asphalt paver with downward deformation by being pre-pressed by strut and pull rods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102635055B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514193B (en) * | 2013-09-27 | 2017-12-29 | 陕西中大机械集团有限责任公司 | Paver rear portion counnter attack arch structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6273636B1 (en) * | 1999-10-08 | 2001-08-14 | Blaw-Knox Construction Equipment Corporation | Edge-forming device for a screed assembly |
| CN2536642Y (en) * | 2002-04-19 | 2003-02-19 | 陕西中大机械集团有限责任公司 | Multifunctional spreader screeding device |
| CN101649598A (en) * | 2009-09-22 | 2010-02-17 | 长安大学 | Ironing board for paver having performance of thermal deformation compensation |
| CN201891063U (en) * | 2010-10-18 | 2011-07-06 | 三一重工股份有限公司 | Hydraulic tension device used for ironing plate of paver and paver |
| CN202148484U (en) * | 2011-07-05 | 2012-02-22 | 长沙中联重工科技发展股份有限公司 | Paver screed plate device and paver |
| CN202519571U (en) * | 2012-04-28 | 2012-11-07 | 长安大学 | Bracing rod pre-pressed downward deformed ironing plate of asphalt paver |
-
2012
- 2012-04-28 CN CN201210131226.6A patent/CN102635055B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6273636B1 (en) * | 1999-10-08 | 2001-08-14 | Blaw-Knox Construction Equipment Corporation | Edge-forming device for a screed assembly |
| CN2536642Y (en) * | 2002-04-19 | 2003-02-19 | 陕西中大机械集团有限责任公司 | Multifunctional spreader screeding device |
| CN101649598A (en) * | 2009-09-22 | 2010-02-17 | 长安大学 | Ironing board for paver having performance of thermal deformation compensation |
| CN201891063U (en) * | 2010-10-18 | 2011-07-06 | 三一重工股份有限公司 | Hydraulic tension device used for ironing plate of paver and paver |
| CN202148484U (en) * | 2011-07-05 | 2012-02-22 | 长沙中联重工科技发展股份有限公司 | Paver screed plate device and paver |
| CN202519571U (en) * | 2012-04-28 | 2012-11-07 | 长安大学 | Bracing rod pre-pressed downward deformed ironing plate of asphalt paver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102635055A (en) | 2012-08-15 |
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