CN110629637B - Paver screed with elevation angle monitoring function - Google Patents
Paver screed with elevation angle monitoring function Download PDFInfo
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- CN110629637B CN110629637B CN201910933002.9A CN201910933002A CN110629637B CN 110629637 B CN110629637 B CN 110629637B CN 201910933002 A CN201910933002 A CN 201910933002A CN 110629637 B CN110629637 B CN 110629637B
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- wheel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
Abstract
A paver screed plate with an elevation angle monitoring function is characterized in that a linear track is arranged on the upper end face of a large arm along the length direction of the large arm, a left fulcrum wheel and a right fulcrum wheel which are arranged along the length direction of the track are arranged in the track in a sliding mode, a balance arm is connected above the left fulcrum wheel and the right fulcrum wheel, a round hole and an arc-shaped hole with the round hole as the center of a circle are formed in the balance arm, and a pair of sliding rails which are longitudinally arranged in parallel are arranged on a machine body corresponding to the round hole and the arc-shaped hole; a sliding block is assembled in the sliding rail in a sliding manner, and the front end of the sliding block is connected with a screw rod which is respectively matched with the round hole and the arc-shaped hole; touch wheel type limit switches are respectively arranged beside the left fulcrum wheel and the right fulcrum wheel, the limit switches are electrically connected with the controller, and the controller can judge whether the elevation angle of the screed plate is positive or negative by detecting the opening and closing of the limit switches; the leveling oil cylinder is electrically connected with the controller. The paver can timely react when the elevation angle of the screed plate is negative, so that the screed plate of the paver is kept in a paving state, and the paving quality is improved.
Description
Technical Field
The invention relates to a screed plate of a paver, in particular to a screed plate of a paver with an elevation angle monitoring function.
Background
The paver is one of key equipment for building base layers and surface layers of various grades of highways and municipal roads, squares, airports, parking lots, dams and ditches, and the screed is arranged at the tail part of the paver and mainly used for leveling, shaping and pre-compacting mixed paving materials such as asphalt concrete, stabilized soil and the like conveyed by the spiral distributor so as to provide good working conditions for further compaction of a subsequent road roller.
As shown in fig. 1, when the screed of the paver is used for paving, it is necessary to maintain an elevation angle α between the screed sole plate and the material, which is also the presence of the elevation angle, so that the moment system resultant moment formed by the force applied to the screed in a stable working state is zero, when the height of the front traction point is unchanged and the paving thickness is increased, α is reduced, the moment balance system is destroyed, the screed rotates counterclockwise around the traction point under the action of the restoring force, the thickness of the paving layer is reduced, α is increased until α returns to the original value, and when the paving thickness is increased in a new position, the screed returns to the balanced state, if the height of the front traction point is increased, the moment balance system is destroyed, the screed rotates clockwise around the traction point under the action of the restoring force, the thickness of the paving layer is increased, α is reduced until α returns to the original value, and when the paving thickness is increased in a new position, the paving quality is restored to the balanced state.
The existing paver screed plate has the condition that α is smaller than 0 sometimes, so that the front edge of a bottom plate of the screed plate is lower than the rear edge, the screed plate scrapes materials to move forwards, phenomena such as galling occur, and the pavement paving quality is seriously affected.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the screed of the paver with the elevation angle monitoring function, which can monitor the elevation angle of the screed and timely react when a negative elevation angle occurs, so that the paver is always kept in a paving state, and the paving quality of a road surface is improved.
In order to achieve the purpose, the invention provides a paver screed plate with an elevation angle monitoring function, which comprises a traction arm, a large arm and a leveling oil cylinder, wherein the leveling oil cylinder is arranged at the right end of the traction arm, the upper end surface of the large arm is provided with a linear track along the length direction of the large arm, a left fulcrum wheel and a right fulcrum wheel which are arranged along the length direction of the track are arranged in the track in a sliding way, a horizontal balance arm is connected above the left fulcrum wheel and the right fulcrum wheel, the balance arm is provided with a circular through hole and an arc-shaped through hole which takes the circular through hole as the circle center along the length direction of the balance arm, a pair of sliding rails which are longitudinally arranged in parallel is arranged on a paver body on the inner side of the large arm corresponding to the circular through hole and the arc-shaped through hole, and the longitudinal movement; the two sliding rails are internally and respectively assembled with sliding blocks in a sliding manner, the outer ends of the two sliding blocks are fixedly connected with screw rods respectively matched with the circular through hole and the arc-shaped through hole, the screw rods are horizontally arranged perpendicular to the sliding blocks, and the parts of the screw rods extending out of the sliding rails are respectively connected with the circular through hole and the arc-shaped through hole;
the left contact wheel type limit switch is arranged beside the left fulcrum wheel, the position of a contact wheel of the left contact wheel type limit switch is slightly lower than that of the left fulcrum wheel, and when the contact surface of the left contact wheel type limit switch and the track and the contact surface of the left fulcrum wheel and the track are in the same plane, the left contact wheel type limit switch sends out a contact signal;
the right contact wheel type limit switch is arranged beside the right fulcrum wheel, the contact wheel position of the right contact wheel type limit switch is slightly lower than that of the right fulcrum wheel, and when the contact surface of the right contact wheel type limit switch and the track and the contact surface of the right fulcrum wheel and the track are in the same plane, the right contact wheel type limit switch sends out a contact signal;
the left contact wheel type limit switch, the right contact wheel type limit switch and the leveling oil cylinder are electrically connected with the controller.
Further, the slide rail include left end plate, right-hand member board, rear end plate, a left side extend the baffle, the right side extends the baffle, extend baffle one and interior extension baffle two in, connect through the rear end plate between left end plate and the right-hand member board, the left side that the rear end plate was kept away from of left end plate and right end plate is connected the left side that extends the baffle that extends right and the right side that extends left respectively and is extended the baffle two, extend the baffle right-hand member and extend the baffle left end on a left side and connect the level respectively and stretch into the inside interior extension baffle of slide rail and extend baffle two in, extend and form the bar breach between baffle one and the interior extension baffle two, the screw rod passes slider in bar breach and the slide.
Furthermore, the slide block is matched with the slide rail in shape and size, and a plurality of balls are arranged on the contact surfaces of the slide block, the slide rail left end plate, the slide rail right end plate, the slide rail rear end plate, the slide rail left extension baffle, the slide rail right extension baffle, the slide rail inner extension baffle I and the slide rail inner extension baffle II, the balls are slidably embedded in a spherical groove or a ball hole formed in the outer wall of the slide block, and the diameter of the spherical groove or the ball hole is slightly smaller than that of the balls; and the centers of the balls are not distributed on the same plane in the transverse direction or in the longitudinal direction in a non-uniform way, so that the sliding block is ensured to be matched with the sliding rail.
Furthermore, the circular through hole is connected with the left slider screw, and the arc-shaped through hole is connected with the right slider screw.
Furthermore, the circular through hole is connected with the right side sliding block screw rod, and the arc-shaped through hole is connected with the left side sliding block screw rod.
Furthermore, the controller is of a type S7-1200.
The control method comprises the steps that a linear track is arranged on the upper end face of a large arm, a left fulcrum wheel and a right fulcrum wheel which are arranged along the length direction of the track are arranged in the track in a sliding mode, the left fulcrum wheel and the right fulcrum wheel are connected with a horizontal balance arm arranged above the track through connecting rods, the balance arm is connected with a longitudinal sliding rail arranged on a paver body on the inner side of the large arm through a circular through hole and an arc-shaped through hole which are formed in the balance arm in a sliding mode through a sliding block, before work, the large arm is adjusted to be in a state of α being 0, then the balance arm is adjusted to be in a state of being parallel to the large arm, at the moment, the left fulcrum wheel and the right fulcrum wheel fall into a large arm track, a controller can simultaneously detect signals of a left contact wheel type limit switch and a right contact wheel type limit switch, after work is started, the large arm is driven by a leveling oil cylinder to perform lifting or lowering actions, the parallel state of the balance arm and the large arm is broken, when the large arm is lifted, the large arm is α being 0, the suspension wheel is suspended in a suspension state, the left fulcrum wheel is disconnected from the left fulcrum wheel, the controller can not detect signals of the left contact type limit switch, the right fulcrum wheel and the right fulcrum type limit switch, the right fulcrum type limit switch can be connected with the control device, the control device can monitor and the lift switch, the lift switch can monitor and the lift switch, the lift switch can monitor the lift switch, the lift switch can monitor, the lift switch can monitor.
Drawings
Fig. 1 is a schematic diagram of the formation of an angle α between a screed plate of a paver and a material;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic view of a first embodiment in which the balance arm is parallel to the track when α is equal to 0;
fig. 4 is a schematic view of a second embodiment in which the balance arm is parallel to the track when α is equal to 0;
fig. 5 is a schematic view of a third embodiment in which the balance arm is parallel to the track when α is equal to 0;
fig. 6 is a schematic view of a fourth embodiment in which the balance arm is parallel to the track when α is equal to 0;
FIG. 7 is a schematic view of the structure of the slider engaged with the slide rail;
fig. 8 is a schematic structural view of the balance arm.
In the figure: 1. the device comprises a traction arm, 2, a large arm, 3, a leveling oil cylinder, 4, a track, 5, a left fulcrum wheel, 6, a right fulcrum wheel, 7, a balance arm, 8, a circular through hole, 9, an arc-shaped through hole, 10, a machine body, 11, a sliding rail, 12, a sliding block, 13, a screw rod, 14, a left touch wheel type limit switch, 15, a right touch wheel type limit switch, 16, a left end plate, 17, a right end plate, 18, a rear end plate, 19, a left extension baffle, 20, a right extension baffle, 21, an inner extension baffle I, 22, an inner extension baffle II, 23 and balls.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 2 and 8, a paver with an ironing plate elevation angle monitoring device comprises a traction arm 1, a large arm 2 and a leveling oil cylinder 3, wherein the leveling oil cylinder 3 is arranged at the right end of the traction arm 1, the upper end surface of the large arm 2 is provided with a linear track 4 along the length direction of the large arm 2, a left fulcrum wheel 5 and a right fulcrum wheel 6 which are arranged along the length direction of the track 4 are arranged in the track 4 in a sliding manner, a horizontal balance arm 7 is connected above the left fulcrum wheel 5 and the right fulcrum wheel 6, the balance arm 7 is provided with a circular through hole 8 and an arc-shaped through hole 9 which takes the circular through hole 8 as the center of a circle along the length direction, a pair of slide rails 11 which are longitudinally arranged in parallel is arranged on a paver body 10 on the inner side of the large arm 2 corresponding to the circular through hole 8 and the arc-shaped through hole 9, and the longitudinal movement range of the large arm 2 is located; the two slide rails 11 are internally and respectively assembled with a slide block 12 in a sliding manner, the outer ends of the two slide blocks 12 are fixedly connected with screw rods 13 respectively matched with the circular through hole 8 and the arc-shaped through hole 9, the screw rods 13 are horizontally arranged perpendicular to the slide blocks 12, and the parts of the screw rods 13 extending out of the slide rails 11 are respectively connected with the circular through hole 8 and the arc-shaped through hole 9;
the left touch wheel type limit switch 14 is arranged beside the left fulcrum wheel 5, the touch wheel position of the left touch wheel type limit switch is slightly lower than that of the left fulcrum wheel 5, and when the contact surface of the left touch wheel type limit switch 14 and the track 4 and the contact surface of the left fulcrum wheel 5 and the track 4 are in the same plane, the left touch wheel type limit switch 14 sends out a contact signal;
the right contact wheel type limit switch 15 is arranged beside the right fulcrum wheel 6, the contact wheel position of the right contact wheel type limit switch is slightly lower than that of the right fulcrum wheel 6, and when the contact surface of the right contact wheel type limit switch 15 and the track 4 and the contact surface of the right fulcrum wheel 6 and the track 4 are in the same plane, the right contact wheel type limit switch 15 sends a contact signal;
the left contact wheel type limit switch 14, the right contact wheel type limit switch 15 and the leveling oil cylinder 3 are electrically connected with the controller. The controller is preferably Siemens S7-1200.
It should be noted that the upper end surface of the large arm 2 may be in the existing shape with radian, and only the rail 4 that is provided from the upper end surface deep inside is required to be kept as a linear groove, but of course, the upper end surface of the large arm 2 may also be a straight section.
As a preferable mode of the slide rail 11, as shown in fig. 7, the slide rail 11 includes a left end plate 16, a right end plate 17, a rear end plate 18, a left extension baffle 19, a right extension baffle 20, a first inner extension baffle 21 and a second inner extension baffle 22, the left end plate 16 and the right end plate 17 are connected through the rear end plate 18, one end of the left end plate 16 and the one end of the right end plate 17 away from the rear end plate 18 are respectively connected with the left extension baffle 19 extending rightward and the right extension baffle 20 extending leftward, the right end of the left extension baffle 19 and the left end of the right extension baffle 20 are respectively connected with the first inner extension baffle 21 and the second inner extension baffle 22 extending horizontally into the slide rail 11, a strip-shaped gap is formed between the first inner extension baffle 21 and the second inner extension baffle 22, and the screw 13 passes through the strip-shaped gap to.
As a preferable mode of the slider 12, as shown in fig. 7, the slider 12 is adapted to the shape and size of the slide rail 11, and a plurality of balls 23 are arranged on contact surfaces of a left end plate 16, a right end plate 17, a rear end plate 18, a left extension baffle 19, a right extension baffle 20, a first inner extension baffle 21 and a second inner extension baffle 22 of the slide rail 11, the balls 23 are slidably inserted into a spherical groove or a ball hole formed in an outer wall of the slider 12, and the diameter of the spherical groove or the ball hole is slightly smaller than that of the balls 23; the centers of the balls 23 are not distributed on the same plane in the transverse direction or in the longitudinal direction, so as to ensure that the sliding block 12 is matched with the sliding rail 11.
As a class of embodiments, as shown in fig. 3 and 4, the circular through hole 8 is connected to the left slider screw, the arc through hole 9 is connected to the right slider screw, and when the elevation angle α is equal to 0, due to different designs of the screed, the large arm 2 may form a positive angle or a negative angle with respect to the horizontal plane, that is, the large arm 2 is in a state of being low on the left or high on the right, the circular through hole 8 is connected to the left slider screw, the arc through hole 9 is connected to the right slider screw, and the left fulcrum wheel 5 slides down in the track 4 by longitudinal movement of the left slider in the left slide rail, and the balance arm 7 rotates in the arc through hole 9 by a certain angle under the action of gravity with the screw connected to the circular through hole 8 as the center until the right fulcrum wheel falls in the track 4, at this time, the left fulcrum wheel 5 and the right fulcrum wheel fall in the track 4 at the same time, the balance arm 7 is parallel to the track 4, and nuts at the circular through hole 8 and the arc through hole 9 are tightened respectively to fix the.
As another embodiment, as shown in fig. 5 and 6, the circular through hole 8 is connected to the right slider screw, the arc through hole 9 is connected to the left slider screw, and when the elevation angle α is equal to 0, due to the different designs of the screed, the large arm 2 may form a positive angle or a negative angle with respect to the horizontal plane, that is, the large arm 2 is in a state of being lower left and higher right or higher left and lower right, the circular through hole 8 is connected to the right slider screw, the arc through hole 9 is connected to the left slider screw, and the right fulcrum wheel 6 slides down in the track 4 by the longitudinal movement of the right slider in the right slide rail, and the balance arm 7 rotates in the arc through hole 9 by a certain angle under the gravity action with the screw connected to the circular through hole 8 as the center until the left fulcrum wheel 5 falls in the track 4, at which time, the left fulcrum wheel 5 and the right fulcrum wheel 6 simultaneously fall in the track 4, the balance arm 7 is parallel to the track 4, and nuts at the circular through hole 8 and the arc through hole 9 are tightened respectively to fix the balance arm.
After the paver starts paving work, the large arm 2 is driven by the leveling cylinder 3 to do lifting or lowering action, the parallel state of the balance arm 7 and the large arm 2 is broken continuously, when the large arm 2 is lifted, α is greater than 0, the left fulcrum wheel 5 is suspended, the controller cannot detect a signal of a left contact wheel type limit switch, the right fulcrum wheel 6 is in contact with the track 4, the controller can detect a signal of the right contact wheel type limit switch, the controller analyzes and processes received signal data, judges that the working state is normal and does not interfere the work of the leveling cylinder, when the large arm 2 is lowered to α which is equal to 0, the left fulcrum wheel 5 and the right fulcrum wheel 6 are in contact with the track 4 simultaneously, the controller can detect signals of the left and right contact wheel type limit switches simultaneously, the controller analyzes and processes the received signal data and sends a locking command to the leveling cylinder 3 to prevent the traction point from being lowered continuously, when the large arm 2 is lowered to α <0 due to the excessively large extent, the right fulcrum wheel 6 is disconnected from being connected with the track, the controller controls the suspension of the left contact wheel type limit switch to control the lifting switch, the elevation angle of the lifting switch, the elevation of the leveling cylinder to monitor the elevation angle of the left contact wheel type limit switch, the elevation of the leveling cylinder can be monitored, the elevation angle of the elevation of the leveling cylinder, the elevation angle of the elevation of the leveling cylinder can be monitored, the leveling cylinder, the elevation angle of the leveling cylinder can be monitored, the elevation angle of.
Claims (6)
1. A paver screed with an elevation angle monitoring function comprises a traction arm (1), a large arm (2) and a leveling oil cylinder (3), wherein the leveling oil cylinder (3) is arranged at the right end of the traction arm (1), and is characterized in that a linear track (4) is arranged on the upper end surface of the large arm (2) along the length direction of the large arm (2), a left fulcrum wheel (5) and a right fulcrum wheel (6) which are arranged along the length direction of the track (4) are arranged in the track (4) in a sliding manner, a horizontal balance arm (7) is connected above the left fulcrum wheel (5) and the right fulcrum wheel (6), a circular through hole (8) and an arc-shaped through hole (9) taking the circular through hole (8) as the circle center are arranged on the balance arm (7) along the length direction, a pair of sliding rails (11) which are longitudinally arranged in parallel is arranged on a paver body (10) on the inner side of the large arm (2) corresponding to the circular through hole (8) and the arc, the longitudinal moving range of the large arm (2) is positioned in the length range between the upper end and the lower end of the sliding rail (11); the two sliding rails (11) are internally and respectively assembled with sliding blocks (12) in a sliding manner, the outer ends of the two sliding blocks (12) are fixedly connected with screw rods (13) respectively matched with the circular through holes (8) and the arc-shaped through holes (9), the screw rods (13) are horizontally arranged perpendicular to the sliding blocks (12), and the parts of the screw rods extending out of the sliding rails (11) are respectively connected with the circular through holes (8) and the arc-shaped through holes (9);
the left contact wheel type limit switch (14) is arranged beside the left fulcrum wheel (5), the position of the contact wheel is slightly lower than that of the left fulcrum wheel (5), and when the contact surface of the left contact wheel type limit switch (14) and the track (4) and the contact surface of the left fulcrum wheel (5) and the track (4) are in the same plane, the left contact wheel type limit switch (14) sends a contact signal;
the right contact wheel type limit switch (15) is arranged beside the right fulcrum wheel (6), the contact wheel position of the right contact wheel type limit switch is slightly lower than that of the right fulcrum wheel (6), and when the contact surface of the right contact wheel type limit switch (15) and the track (4) and the contact surface of the right fulcrum wheel (6) and the track (4) are in the same plane, the right contact wheel type limit switch (15) sends a contact signal;
the left contact wheel type limit switch (14), the right contact wheel type limit switch (15) and the leveling oil cylinder (3) are electrically connected with the controller.
2. The paver screed with the elevation angle monitoring function as claimed in claim 1, characterized in that the slide rail (11) comprises a left end plate (16), a right end plate (17), a rear end plate (18), a left extension baffle (19), a right extension baffle (20), a first inner extension baffle (21) and a second inner extension baffle (22), the left end plate (16) and the right end plate (17) are connected through the rear end plate (18), one ends of the left end plate (16) and the right end plate (17) far away from the rear end plate (18) are respectively connected with the left extension baffle (19) extending rightwards and the right extension baffle (20) extending leftwards, the right end of the left extension baffle (19) and the left end of the right extension baffle (20) are respectively connected with a first inner extension baffle (21) and a second inner extension baffle (22) extending horizontally into the interior of the slide rail (11), and a strip-shaped gap is formed between the first inner extension baffle (21) and the second inner extension baffle (22), the screw rod (13) penetrates through the strip-shaped notch to be connected with a sliding block (12) in the sliding rail (11).
3. The paver screed plate with the elevation angle monitoring function of claim 2, wherein the slide block (12) is matched with the slide rail (11) in shape and size, a plurality of balls (23) are arranged on contact surfaces of the slide rail (11) and a left end plate (16), a right end plate (17), a rear end plate (18), a left extending baffle (19), a right extending baffle (20), a first extending baffle (21) and a second extending baffle (22), the balls (23) are slidably embedded in spherical grooves or ball holes formed in the outer wall of the slide block (12), and the diameter of the spherical grooves or the ball holes is slightly smaller than that of the balls (23).
4. The paver screed with the elevation angle monitoring function as claimed in any one of claims 1 to 3, characterized in that the circular through hole (8) is connected with the screw (13) of the left slider (12), and the arc-shaped through hole (9) is connected with the screw (13) of the right slider (12).
5. The paver screed with the elevation angle monitoring function as claimed in any one of claims 1 to 3, characterized in that the circular through hole (8) is connected with the screw (13) of the right-hand slider (12), and the arc-shaped through hole (9) is connected with the screw (13) of the left-hand slider (12).
6. The screed of a paving machine having elevation angle monitoring function as claimed in claim 1, wherein the controller is of a type siemens S7-1200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933002.9A CN110629637B (en) | 2019-09-29 | 2019-09-29 | Paver screed with elevation angle monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933002.9A CN110629637B (en) | 2019-09-29 | 2019-09-29 | Paver screed with elevation angle monitoring function |
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| Publication Number | Publication Date |
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| CN110629637A CN110629637A (en) | 2019-12-31 |
| CN110629637B true CN110629637B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910933002.9A Active CN110629637B (en) | 2019-09-29 | 2019-09-29 | Paver screed with elevation angle monitoring function |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113152221B (en) * | 2021-04-13 | 2023-03-21 | 徐州工业职业技术学院 | Ironing device suitable for small paver |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397199A (en) * | 1993-08-06 | 1995-03-14 | Caterpillar Paving Products Inc. | Screed assembly for an asphalt paving machine |
| US6203243B1 (en) * | 1998-02-03 | 2001-03-20 | Universal Screed Inc. | Two-stage paving screed extension |
| CN201553973U (en) * | 2009-11-16 | 2010-08-18 | 三一重工股份有限公司 | Spreading machine and edge baffle of screed thereof |
| CN201778268U (en) * | 2010-09-20 | 2011-03-30 | 广东冠粤路桥有限公司 | Parallel spreading scraping plough for longitudinal joints |
| 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 |
| CN102261032A (en) * | 2011-05-04 | 2011-11-30 | 三一重工股份有限公司 | Paver and levelling control device thereof |
| WO2016013699A1 (en) * | 2014-07-24 | 2016-01-28 | Volvo Construction Equipment Ab | Paver with spacer for tow arm |
| CN106939544A (en) * | 2017-05-04 | 2017-07-11 | 徐州工业职业技术学院 | A kind of adjusting means for paver screed difference in height |
| CN206721629U (en) * | 2017-05-04 | 2017-12-08 | 徐州工业职业技术学院 | Balanced type paver screed difference in height adjusting apparatus |
-
2019
- 2019-09-29 CN CN201910933002.9A patent/CN110629637B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397199A (en) * | 1993-08-06 | 1995-03-14 | Caterpillar Paving Products Inc. | Screed assembly for an asphalt paving machine |
| US6203243B1 (en) * | 1998-02-03 | 2001-03-20 | Universal Screed Inc. | Two-stage paving screed extension |
| CN201553973U (en) * | 2009-11-16 | 2010-08-18 | 三一重工股份有限公司 | Spreading machine and edge baffle of screed thereof |
| CN201778268U (en) * | 2010-09-20 | 2011-03-30 | 广东冠粤路桥有限公司 | Parallel spreading scraping plough for longitudinal joints |
| 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 |
| CN102261032A (en) * | 2011-05-04 | 2011-11-30 | 三一重工股份有限公司 | Paver and levelling control device thereof |
| WO2016013699A1 (en) * | 2014-07-24 | 2016-01-28 | Volvo Construction Equipment Ab | Paver with spacer for tow arm |
| CN106939544A (en) * | 2017-05-04 | 2017-07-11 | 徐州工业职业技术学院 | A kind of adjusting means for paver screed difference in height |
| CN206721629U (en) * | 2017-05-04 | 2017-12-08 | 徐州工业职业技术学院 | Balanced type paver screed difference in height adjusting apparatus |
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|---|---|
| CN110629637A (en) | 2019-12-31 |
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