A road surface compacting device for road and bridge engineering

Abstract

The present invention provides a road surface compacting device for road and bridge engineering, which belongs to the technical field of road and bridge engineering, and includes a roller, a bracket, a drive assembly, a vibration assembly, and an air bleed assembly. The bracket is in a U-shaped structure, and a support shaft is rotatably provided on the inner side of the bracket. The outer side of the bracket is connected to an external traction vehicle. The support shaft passes through the roller and rotates with the roller. The vibration assembly is installed on the shaft body of the support shaft located inside the roller, and the drive assembly is arranged on the inner side wall of the roller. Compared with the prior art, the embodiment of the present invention uses the air bleed assembly to induce external air to pass through the inside of the roller when the drive assembly drives the vibration assembly to vibrate and then compacts the asphalt on the road surface, thereby cooling the roller, thereby extending the working time of the roller and improving the compaction efficiency of the asphalt on the road surface.

Description

Technical Field

[0001] The invention belongs to the technical field of road and bridge engineering, and in particular relates to a road surface compacting device for road and bridge engineering. Background Art

[0002] At present, during the road and bridge subgrade construction phase, it is often necessary to lay asphalt on the road surface of the construction project. During the paving process, it is often necessary to use a roller to compact the asphalt to improve the flatness of the asphalt road surface.

[0003] When working, the existing road roller relies on an external traction vehicle to drive the roller to roll on the road surface, and cooperates with the excitation structure inside the roller to apply vibration force to the roller. The vibration force is transmitted to the asphalt on the road surface to achieve vibration compaction of the asphalt. However, since the roller drum is relatively closed, the heat generated when the excitation structure is working is not easy to dissipate from the inside of the drum. At the same time, the temperature of the asphalt itself is relatively high, and the temperature inside the drum will also rise when the roller acts on the asphalt. Therefore, the existing road roller cannot work continuously for a long time, which affects the compaction efficiency of the asphalt on the road surface. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a road surface compacting device for road and bridge engineering.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A road surface compacting device for road and bridge engineering, comprising a roller, a bracket, a driving assembly, a vibration assembly and an air bleed assembly.

[0007] The bracket is a U-shaped structure, with a support shaft rotatably provided inside the bracket, and the outside of the bracket is connected to an external traction vehicle, and the support shaft passes through the roller and rotates with the roller.

[0008] The excitation component is mounted on the shaft of the support shaft located inside the drum, and the driving component is arranged on the inner side wall of the drum. When the drum rolls along the road surface, the driving component drives the excitation component to vibrate and hit the inner wall of the drum to achieve vibration compaction of the road asphalt.

[0009] The air introduction component is arranged inside the drum. When the excitation component vibrates, the air introduction component is used to introduce external air and allow the external air to pass through the inside of the drum to achieve cooling of the drum.

[0010] As a further improvement of the present invention: the driving assembly includes a plurality of push blocks,

[0011] A plurality of push blocks are installed on the inner side wall of the drum, and the push blocks are distributed in an annular manner on the inner side wall of the drum. A first inclined surface is provided on the left side wall of each group of push blocks.

[0012] The excitation assembly includes an excitation block, a connecting rod, a support seat, an elastic member and a push rod.

[0013] The lower end of the connecting rod is fixedly connected to the excitation block, and the upper end is fixedly connected to the support seat. The elastic member is arranged on the upper part of the support seat, and is used to provide elastic support for the support seat so that the excitation block contacts the inner bottom wall of the drum. One end of the push rod is fixedly connected to the support seat, and the other end extends between two adjacent groups of push blocks.

[0014] As a further improvement of the present invention: a plurality of the push blocks are rotatably provided with a rotating shaft, the rotating shaft is fixedly mounted on the inner wall of the drum, and a second inclined surface is provided on the right side wall of each group of the push blocks.

[0015] Each group of push blocks is provided with an arc-shaped chute, and a limit block is movably provided inside each group of the arc-shaped chute. The limit block is fixedly mounted on the inner wall of the drum.

[0016] As a further improvement of the present invention: the center of the arc-shaped sliding groove coincides with the center of the rotating shaft.

[0017] As a further improvement of the present invention: an air intake channel is provided at one end of the support shaft and an air exhaust channel is provided at the other end, and the air intake channel is not connected to the air exhaust channel.

[0018] The support shaft is located inside the drum and is provided with an air outlet pipe and an exhaust hole. The air outlet pipe is connected to the air inlet channel, and the exhaust hole is connected to the exhaust channel. Both the air outlet pipe and the air inlet channel are provided with a one-way valve.

[0019] The air bleed assembly includes a piston rod and a piston sleeve.

[0020] The piston sleeve is fixedly arranged at the bottom of the support shaft and is connected to the air intake channel. The upper end of the piston rod extends into the interior of the piston sleeve and is telescopically matched with the piston sleeve. The lower end extends to the bottom of the piston sleeve and is fixedly connected to the support seat. One end of the elastic member is connected to the support seat, and the other end is connected to the piston sleeve.

[0021] As a further improvement of the present invention: the elastic member is a spring or a metal spring.

[0022] As a further improvement of the present invention: the vibration components and the air bleed components are arranged in a plurality of groups inside the drum along the length direction of the support shaft, and the support seats corresponding to two adjacent groups of the vibration components are fixedly connected by a linkage rod.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In an embodiment of the present invention, when it is necessary to compact the asphalt on the road surface, a worker drives a traction vehicle along the road surface, and the traction vehicle drives the roller to roll along the road surface through the bracket. At this time, the roller presses the road surface and then performs preliminary compaction on the asphalt on the road surface. While the roller rolls along the road surface, the driving component can also drive the excitation component to vibrate inside the roller and impact the inner wall of the roller. The roller transmits the impact force to the asphalt on the road surface, thereby achieving further compaction of the asphalt on the road surface; when the excitation component vibrates, the air bleed component can draw outside air and allow the outside air to pass through the inside of the roller, thereby cooling the roller to prevent the temperature inside the roller from being too high, thereby ensuring that the roller can compact the asphalt on the road surface for a long time, thereby improving the compaction efficiency of the asphalt on the road surface. Compared with the existing technology, when the driving component drives the excitation component to vibrate and then compacts the asphalt on the road surface, the air bleed component is used to draw outside air so that the outside air passes along the inside of the roller, thereby achieving cooling of the roller, thereby extending the working time of the roller and improving the compaction efficiency of the asphalt on the road surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a road surface compaction device for road and bridge engineering;

[0026] Figure 2 Schematic diagram of the internal structure of the drum in a road compaction device used in road and bridge engineering Figure 1 ;

[0027] Figure 3 Schematic diagram of the internal structure of the drum in a road compaction device used in road and bridge engineering Figure 2 ;

[0028] Figure 4 for Figure 2 A magnified schematic diagram of area A in the middle;

[0029] In the figure: 10- roller, 20- bracket, 201- support shaft, 202- air inlet channel, 203- exhaust channel, 204- exhaust hole, 205- exhaust pipe, 30- driving assembly, 301- push block, 302- rotating shaft, 303- arc-shaped slide groove, 304- limiting block, 40- vibration assembly, 401- vibration block, 402- connecting rod, 403- support seat, 404- elastic member, 405- push rod, 406- linkage rod, 50- air bleed assembly, 501- piston rod, 502- piston sleeve. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] See also Figure 1 、 Figure 2 as well as Figure 3 This embodiment provides a road surface compacting device for road and bridge engineering, including a drum 10, a bracket 20, a drive assembly 30, an excitation assembly 40, and an air bleed assembly 50. The bracket 20 has a U-shaped structure. A support shaft 201 is rotatably provided on the inner side of the bracket 20. The outer side of the bracket 20 is connected to an external traction vehicle (not shown in the figure). The support shaft 201 passes through the drum 10 and rotates with the drum 10. The excitation assembly 40 is mounted on the shaft of the support shaft 201 located inside the drum 10. The drive assembly 30 is disposed on the inner side wall of the drum 10. When the drum 10 rolls along the road surface, the drive assembly 30 drives the excitation assembly 40 to vibrate and impact the inner wall of the drum 10 to achieve vibratory compaction of the road asphalt. The air bleed assembly 50 is disposed inside the drum 10. When the excitation assembly 40 vibrates, the air bleed assembly 50 is used to draw external air and allow the external air to pass through the interior of the drum 10 to achieve cooling of the drum 10.

[0033] When the asphalt on the road needs to be compacted, the staff drives a traction vehicle along the road. The traction vehicle drives the roller 10 to roll along the road through the bracket 20. At this time, the roller 10 presses the road surface and then performs preliminary compaction on the asphalt on the road. While the roller 10 rolls along the road, the driving component 30 can also drive the excitation component 40 to vibrate inside the roller 10 and hit the inner wall of the roller 10. The roller 10 transmits the impact force to the asphalt on the road, thereby achieving further compaction of the asphalt on the road. When the excitation component 40 vibrates, the air bleed component 50 can draw outside air and allow the outside air to pass through the inside of the roller 10, thereby cooling the roller 10 to prevent the internal temperature of the roller 10 from being too high, thereby ensuring that the roller 10 can perform compaction operations on the asphalt on the road for a long time, thereby improving the compaction efficiency of the asphalt on the road.

[0034] See also Figure 2 as well as Figure 4In one embodiment, the driving assembly 30 includes a plurality of push blocks 301, and the push blocks 301 are installed on the inner side wall of the drum 10. The push blocks 301 are distributed in a ring-shaped manner on the inner side wall of the drum 10, and a first inclined surface is provided on the left side wall of each group of push blocks 301. The excitation assembly 40 includes an excitation block 401, a connecting rod 402, a support seat 403, an elastic member 404 and a push rod 405. The lower end of the connecting rod 402 is fixedly connected to the excitation block 401, and the upper end is fixedly connected to the support seat 403. The elastic member 404 is arranged on the upper part of the support seat 403 for providing elastic support to the support seat 403, so that the excitation block 401 contacts the inner bottom wall of the drum 10. One end of the push rod 405 is fixedly connected to the support seat 403, and the other end extends between two adjacent groups of push blocks 301.

[0035] For ease of understanding, the push blocks 301 are named as the first push block, the second push block, the third push block, etc. Initially, the end of the push rod 405 away from the support seat 403 extends to between the first push block and the second push block. When the traction vehicle drives the roller 10 to roll along the road surface through the bracket 20, the roller 10 drives the push blocks 301 to rotate relative to the push rod 405. The end of the push rod 405 away from the support seat 403 can act on the first inclined surface on the left side wall of the second push block and slide down along the first inclined surface. When the push rod 405 slides up, it drives the support seat 403, connecting rod 402 and exciting block 401 move upward, so that exciting block 401 is separated from the inner bottom wall of roller 10. At this time, elastic member 404 is compressed. When the end of push rod 405 away from support seat 403 slides off the first inclined surface on the left side wall of second push block, elastic member 404 pushes support seat 403, thereby driving connecting rod 402, exciting block 401 and push rod 405 to move downward. Exciting block 401 hits the inner bottom wall of roller 10, and roller 10 transmits the impact force to the road asphalt, realizing vibration compaction of road asphalt. In this process, The push rod 405 moves down and enters between the second push block and the third push block. As the roller 10 and the push blocks 301 continue to rotate, the first inclined surface on the left side wall of the third push block pushes the push rod 405 again, causing the push rod 405 to slide down along the current first inclined surface again, thereby driving the support seat 403, the connecting rod 402 and the exciting block 401 to move up again, and the elastic member 404 is compressed again. When the end of the push rod 405 away from the support seat 403 slides off the first inclined surface on the left side wall of the third push block, the elastic member 404 pushes the support seat 403 and thereby drives the exciting block 401 to move up again. The vibration block 401 and the push rod 405 move downward again, and the vibration block 401 hits the inner bottom wall of the roller 10 again to achieve re-compacting of the road asphalt. At the same time, the push rod 405 moves downward to between the third push block and the fourth push block away from the support seat 403. This cycle repeats itself. When the roller 10 rolls along the road surface, the vibration block 401 can move up and down inside the roller 10 through the cooperation of several push blocks 301 and the elastic member 404, that is, vibration occurs, and then repeatedly hits the inner bottom wall of the roller 10 to achieve vibration compaction of the road asphalt.

[0036] See also Figure 4 In one embodiment, a plurality of the push blocks 301 are rotatably provided with a rotating shaft 302, and the rotating shaft 302 is fixedly mounted on the inner wall of the drum 10. A second inclined surface is provided on the right side wall of each group of the push blocks 301, and an arc-shaped slide groove 303 is opened on each group of the push blocks 301. A limit block 304 is movably provided inside each group of the arc-shaped slide groove 303, and the limit block 304 is fixedly mounted on the inner wall of the drum 10.

[0037] When the roller 10 is in the working state, the first inclined surfaces on the left side walls of the push blocks 301 face the inner side of the roller 10, while the second inclined surfaces on the right side walls of the push blocks 301 face the outer side of the roller 10. When the roller 10 rolls along the asphalt on the road surface, the first inclined surfaces on the left side walls of the push blocks 301 can push the push rod 405 upward, thereby driving the support seat 403 and the excitation block 401 to move upward. At this time, the limit block 304 is located at one end of the inner side of the arc slide groove 303 to limit the rotation of the push block 301, so that the push block 301 can remain stable, thereby enabling the first inclined surface to smoothly push the push rod 405 upward; when the roller 10 rolls to the end position of the asphalt on the road surface and needs to reversely roll and compact the asphalt on the road surface, the staff reverses the traction vehicle, and the traction vehicle pulls the roller 10 through the bracket 20, so that the roller 10 rolls in the opposite direction along the asphalt on the road surface. At this time, the roller 10 drives the push blocks 301 to move relative to the push rod 4 When the cam 303 is in the opposite direction, the second inclined surfaces on the right side walls of the plurality of push blocks 301 face the inner side of the roller 10, while the first inclined surfaces on the left side walls of the plurality of push blocks 301 face the outer side of the roller 10, thereby realizing the rotation and displacement of the plurality of push blocks 301. During and after the displacement, the second inclined surfaces on the right side walls of the plurality of push blocks 301 cooperate with the elastic member 404 to also drive the push rod 405, the support seat 403 and the excitation block 401 to move up and down, thereby making the roller 10 vibrate and compact the asphalt on the road surface when rolling in the opposite direction along the asphalt on the road surface.

[0038] In one embodiment, the center of the arc-shaped slide groove 303 coincides with the center of the rotating shaft 302, so that when the push rod 405 acts on the second inclined surface on the right side wall of the push block 301, it can smoothly drive the push block 301 to rotate compared to the rotating shaft 302, so that the limit block 304 will not restrict the rotation of the push block 301.

[0039] See also Figure 2 as well as Figure 3In one embodiment, an air inlet channel 202 is provided at one end of the support shaft 201, and an exhaust channel 203 is provided at the other end. The air inlet channel 202 is not connected to the exhaust channel 203. An air outlet pipe 205 and an exhaust hole 204 are provided on the shaft body of the support shaft 201 located inside the drum 10. The air outlet pipe 205 is connected to the air inlet channel 202, and the exhaust hole 204 is connected to the exhaust channel 203. A one-way valve is provided inside the air outlet pipe 205 and the air inlet channel 202. (not shown in the figure), the air induction assembly 50 includes a piston rod 501 and a piston sleeve 502, the piston sleeve 502 is fixedly arranged at the bottom of the support shaft 201 and is connected to the air intake channel 202, the upper end of the piston rod 501 extends to the inside of the piston sleeve 502 and is telescopically matched with the piston sleeve 502, and the lower end extends to the bottom of the piston sleeve 502 and is fixedly connected to the support seat 403, one end of the elastic member 404 is connected to the support seat 403, and the other end is connected to the piston sleeve 502.

[0040] When the first inclined surface or the second inclined surface on the push block 301 pushes the push rod 405 to move upward, thereby driving the excitation block 401 and the support seat 403 to move upward, the support seat 403 can drive the piston rod 501 to move upward synchronously, and the piston rod 501 moves toward the inside of the piston sleeve 502. At this time, the elastic member 404 is compressed, and the one-way valve inside the air outlet pipe 205 is opened, and the one-way valve inside the air inlet channel 202 is closed. The piston rod 501 presses the air inside the air inlet channel 202 into the inside of the drum 10 through the air outlet pipe 205, and then drives the air inside the drum 10 into the exhaust channel 203 from the exhaust hole 204, and then is discharged to the outside through the exhaust channel 203. When the first inclined surface or the second inclined surface on the push block 301 separates from the push rod 405, When the elastic member 404 pushes the support seat 403 and the excitation block 401 downward, the support seat 403 drives the piston rod 501 to move downward. At this time, the one-way valve inside the outlet pipe 205 is closed, and the one-way valve inside the air inlet channel 202 is opened. The piston rod 501 draws outside air into the air inlet channel 202 to introduce outside air. In this way, through the up and down movement of the piston rod 501 compared with the piston sleeve 502, the outside air can be continuously introduced from the air inlet channel 202 and the air outlet pipe 205 into the interior of the drum 10, and then the air inside the drum 10 is continuously discharged to the outside through the exhaust hole 204 and the exhaust channel 203, so that the outside air can be continuously circulated along the inside of the drum 10, thereby realizing the cooling of the drum 10.

[0041] In one embodiment, the elastic member 404 may be a spring or a metal spring, which is not limited here.

[0042] See also Figure 2 as well as Figure 3In one embodiment, the excitation assembly 40 and the air bleed assembly 50 are arranged in several groups inside the drum 10 along the length direction of the support shaft 201, and the support seats 403 corresponding to two adjacent groups of the excitation assembly 40 are fixedly connected by a linkage rod 406.

[0043] When the first inclined surface or the second inclined surface on the push block 301 acts on the push rod 405, the support seats 403 corresponding to the several vibration components 40 can be moved up synchronously under the action of the linkage rod 406, thereby driving the several vibration blocks 401 to move up synchronously. When the first inclined surface or the second inclined surface on the push block 301 is separated from the push rod 405, the elastic parts 404 corresponding to the several vibration components 40 can push the several support seats 403 and thereby drive the several vibration blocks 401 to move down synchronously. The several vibration blocks 401 hit different positions of the inner bottom wall of the roller 10, thereby increasing the force area of the roller 10 to improve the vibration compaction effect of the road asphalt.

[0044] In the embodiment of the present invention, when it is necessary to compact the asphalt on the road surface, the staff drives the traction vehicle along the road surface, and the traction vehicle drives the roller 10 to roll along the road surface through the bracket 20. At this time, the roller 10 presses the road surface and then performs preliminary compaction on the asphalt on the road surface. While the roller 10 rolls along the road surface, the driving component 30 can also drive the excitation component 40 to vibrate inside the roller 10 and hit the inner wall of the roller 10. The roller 10 transmits the impact force to the asphalt on the road surface, thereby achieving further compaction of the asphalt on the road surface; when the excitation component 40 vibrates, the air bleed component 50 can induce external air and make the asphalt on the road surface The outside air passes through the inside of the drum 10, and then the drum 10 is cooled to prevent the internal temperature of the drum 10 from being too high, thereby ensuring that the drum 10 can compact the road asphalt for a long time, thereby improving the compaction efficiency of the road asphalt. Compared with the existing technology, when the driving component 30 drives the excitation component 40 to vibrate and then compact the road asphalt, the air induced component 50 is used to induce the outside air so that the outside air passes along the inside of the drum 10, thereby realizing the cooling of the drum 10, thereby extending the working time of the drum 10 and improving the compaction efficiency of the road asphalt.

[0045] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A road surface compacting device for road and bridge engineering, characterized in that: It comprises a roller (10), a bracket (20), a driving assembly (30), a vibration assembly (40), and an air entrainment assembly (50), The bracket (20) has a U-shaped structure. A support shaft (201) is rotatably provided on the inner side of the bracket (20). The outer side of the bracket (20) is connected to an external traction vehicle. The support shaft (201) passes through the roller (10) and is rotatably engaged with the roller (10). The excitation component (40) is mounted on the shaft of the support shaft (201) located inside the roller (10), and the driving component (30) is arranged on the inner side wall of the roller (10). When the roller (10) rolls along the road surface, the driving component (30) drives the excitation component (40) to vibrate and impact the inner wall of the roller (10), thereby achieving vibration compaction of the road surface asphalt. The air induction component (50) is arranged inside the drum (10). When the excitation component (40) vibrates, the air induction component (50) is used to induce external air and allow the external air to pass through the inside of the drum (10) to achieve cooling of the drum (10). The driving assembly (30) includes a plurality of push blocks (301), A plurality of push blocks (301) are installed on the inner side wall of the drum (10), and the push blocks (301) are distributed in an annular manner on the inner side wall of the drum (10). A first inclined surface is provided on the left side wall of each group of push blocks (301). The excitation assembly (40) includes an excitation block (401), a connecting rod (402), a support seat (403), an elastic member (404) and a push rod (405). The lower end of the connecting rod (402) is fixedly connected to the excitation block (401), and the upper end is fixedly connected to the support seat (403). The elastic member (404) is arranged on the upper part of the support seat (403) and is used to provide elastic support to the support seat (403) so that the excitation block (401) contacts the inner bottom wall of the roller (10). One end of the push rod (405) is fixedly connected to the support seat (403), and the other end extends between two adjacent groups of the push blocks (301).

2. A road surface compacting device for road and bridge engineering according to claim 1, characterized in that: A plurality of the push blocks (301) are rotatably provided with a rotating shaft (302). The rotating shaft (302) is fixedly mounted on the inner wall of the drum (10), and a second inclined surface is provided on the right side wall of each group of push blocks (301). Each group of push blocks (301) is provided with an arc-shaped chute (303), and a limit block (304) is movably provided inside each group of arc-shaped chute (303), and the limit block (304) is fixedly mounted on the inner wall of the drum (10).

3. A road surface compacting device for road and bridge engineering according to claim 2, characterized in that: The center of the arc-shaped sliding groove (303) coincides with the center of the rotating shaft (302).

4. A road surface compacting device for road and bridge engineering according to claim 1, characterized in that: An air intake channel (202) is provided at one end of the support shaft (201), and an air exhaust channel (203) is provided at the other end. The air intake channel (202) is not connected to the air exhaust channel (203). An air outlet pipe (205) and an exhaust hole (204) are provided on the shaft body of the support shaft (201) located inside the drum (10). The air outlet pipe (205) is communicated with the air inlet channel (202), and the exhaust hole (204) is communicated with the exhaust channel (203). Both the air outlet pipe (205) and the air inlet channel (202) are provided with a one-way valve. The air bleed assembly (50) comprises a piston rod (501) and a piston sleeve (502). The piston sleeve (502) is fixedly arranged at the bottom of the support shaft (201) and is connected to the air inlet channel (202); the upper end of the piston rod (501) extends into the interior of the piston sleeve (502) and is telescopically matched with the piston sleeve (502); the lower end extends below the piston sleeve (502) and is fixedly connected to the support seat (403); one end of the elastic member (404) is connected to the support seat (403), and the other end is connected to the piston sleeve (502).

5. A road surface compacting device for road and bridge engineering according to claim 4, characterized in that: The elastic member (404) is a spring or a metal spring.

6. A road surface compacting device for road and bridge engineering according to claim 1, characterized in that: The excitation components (40) and the air bleed components (50) are arranged in a plurality of groups at intervals along the length direction of the support shaft (201) inside the drum (10), and the support seats (403) corresponding to two adjacent groups of the excitation components (40) are fixedly connected via a linkage rod (406).

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