Crossing type averaging beam of asphalt paver

Abstract

The utility model discloses an asphalt paver crossing type average beam which comprises a front walking mechanism, a rear walking mechanism, a traction cross frame and a connecting cross beam, the traction cross frame is installed on the wall side of a paver main machine and located above a main machine ironing plate, the connecting cross beam is located below the traction cross frame, the front walking mechanism is arranged at the front end of the connecting cross beam, and the rear walking mechanism is arranged at the rear end of the connecting cross beam. The front walking mechanism comprises a floating beam and a plurality of sliding shoe assemblies arranged at the bottom of the floating beam, a rear walking mechanism is arranged at the rear end of the connecting cross beam and comprises a rear beam body, and a plurality of walking assemblies are arranged at the bottom of the rear beam body. According to the stride-over type average beam of the asphalt paver, the whole average beam structure crosses over an ironing plate of the paver, the stride-over type average beam runs on the middle area of a road in the working process on the basis that the flatness is good, and the influence of foundation errors of areas on the two sides of the road is greatly reduced; meanwhile, the floating beam and the rear beam body are arranged on the front side and the rear side of the main machine respectively, and foundation errors can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement construction, in particular to a spanning average beam of an asphalt paver. Background Art

[0002] In mechanized highway construction, the smoothness of the asphalt pavement is a crucial indicator for road project acceptance. It directly impacts the quality of vehicle travel on the road and the full functionality of the highway's basic functions. Therefore, improving and enhancing pavement smoothness has long been a key technology in asphalt pavement construction, attracting significant attention and attention from the highway science and technology community. The fundamental factors influencing asphalt pavement smoothness include factors related to paving operations and benchmarking, factors related to rolling operations, and factors affecting the transmission of underlying pavement irregularities.

[0003] While many factors influence smoothness, the smoothness of the loose-ply course during construction is a prerequisite for achieving a high level of smoothness in asphalt pavement construction. Therefore, providing an accurate smoothness reference for the paver during construction is crucial for producing high-quality loose-ply courses. In existing technologies, in addition to using steel wires stretched across the roadbed as a leveling reference, pavers typically use an external averaging beam as an automatic leveling reference. Since my country promotes the whole-width paving method for laying asphalt layers in high-grade highway construction, the traditional outside-type averaging beam structure has great inadaptability in actual application, which is mainly manifested in the following ways: First, since the traditional structure averaging beam is located on the outside of the component forming the paving layer, namely the main plate of the paver, it can only travel in the edge area of ​​the road, and this area generally has a large foundation error, so it is difficult to control the flatness of the entire paved road surface; Second, according to the working principle of the averaging beam, the length of the beam is proportional to the accuracy of the road surface leveling control, but the traditional old-style averaging beam is relatively short in length (generally not more than 6 meters) due to structural limitations, so its leveling accuracy is correspondingly low; Third, the beam body of the traditional old-style averaging beam structure is located on the side behind the paver plate, and it is difficult to achieve independent control of the flatness of the front and rear sides of the main machine. Utility Model Content

[0004] The purpose of the utility model is to provide a spanning average beam of an asphalt paver to solve the above-mentioned deficiencies in the prior art.

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

[0006] A spanning average beam for an asphalt paver, comprising:

[0007] A traction cross frame, which is installed on the wall side of the main machine of the paver and is located above the main machine screed;

[0008] A front traveling mechanism, comprising a floating beam and a plurality of sliding shoe assemblies arranged at the bottom of the floating beam, the floating beam being floatingly mounted on the sliding shoe assemblies, and the floating beam being located in front of the main machine screed;

[0009] A rear traveling mechanism, comprising a rear beam, the rear beam being located behind the main machine screed, a plurality of traveling assemblies being provided at the bottom of the rear beam, and the rear beam being adjustably mounted on the traveling assemblies;

[0010] A connecting crossbeam is located below the traction cross frame, and a front connecting member and a rear connecting member are respectively provided at both ends of the connecting cross frame. A front connecting member is provided at the top of the middle position of the floating beam, and the front connecting member is rotatably mounted on the front connecting member. A rear connecting member is provided at the top of the middle position of the rear beam body, and the rear connecting member is rotatably mounted on the rear connecting member.

[0011] The above-mentioned asphalt paver spanning average beam, the traveling assembly includes traveling wheels and a rear mounting plate, the rear mounting plate is fixedly mounted on the bottom of the rear beam body, and the traveling wheels are located directly below the rear mounting plate.

[0012] The above-mentioned asphalt paver spanning average beam, the traveling wheel includes an axle mounting seat and a first wheel body and a second wheel body arranged coaxially, the first wheel body and the second wheel body are connected by a connecting shaft, and the connecting shaft is rotatably mounted on the axle mounting seat.

[0013] The above-mentioned asphalt paver spanning average beam, the walking assembly also includes an elastic connecting component, the elastic connecting component includes a telescopic connecting rod and a spring member, the lower end of the telescopic connecting rod is fixedly mounted on the axle mounting seat, and the upper end of the telescopic connecting rod is fixedly connected to the rear mounting plate.

[0014] In the above-mentioned asphalt paver spanning average beam, the lower end of the spring member is fixedly connected to the circular block on the shaft mounting seat, and the upper end of the spring member is fixedly mounted on the bottom of the rear mounting plate.

[0015] The above-mentioned asphalt paver spanning average beam, the sliding shoe assembly includes a sliding shoe plate and a top mounting plate, the top mounting plate is fixedly mounted on the floating beam, and the sliding shoe plate is located directly below the top mounting plate.

[0016] The above-mentioned asphalt paver spanning average beam further includes an elastic buffering member, which is arranged between the sliding shoe plate and the top mounting plate and is used for elastically buffering the movement of the sliding shoe plate.

[0017] In the above-mentioned asphalt paver spanning average beam, the elastic buffer component includes a first rod body and a second rod body that are arranged opposite to each other, and the middle position of the first rod body and the second rod body is connected by a rotating connecting shaft.

[0018] The above-mentioned asphalt paver spanning average beam has an upper slide groove at the bottom of the top mounting plate, and upper sliding seats are provided on the tops of the first rod body and the second rod body. The upper sliding seats are slidably connected in the upper slide groove, and an upper telescopic rod is provided between the two upper sliding seats, and an upper spring member is sleeved on the upper telescopic rod.

[0019] The above-mentioned asphalt paver spanning average beam has a sliding groove on the top of the sliding shoe plate, and a lower sliding seat is provided at the bottom of the first rod body and the second rod body. The lower sliding seat is slidably connected in the sliding groove, and a lower telescopic rod is provided between the two lower sliding seats, and a lower spring member is sleeved on the lower telescopic rod.

[0020] In the above technical solution, the asphalt paver spanning average beam provided by the embodiment of the present invention includes a front traveling mechanism, a rear traveling mechanism, a traction cross frame and a connecting cross beam. The traction cross frame is installed on the wall side of the main machine of the paver and is located above the main machine ironing plate. The connecting cross beam is located below the traction cross frame. The front end of the connecting cross beam is provided with a front traveling mechanism, which includes a floating beam and a plurality of sliding shoe assemblies arranged at the bottom of the floating beam. The rear end of the connecting cross beam is provided with a rear traveling mechanism, which includes a rear beam body. The bottom of the rear beam body is provided with a plurality of traveling assemblies. In this way, the entire average beam structure is The structure spans over the ironing plate of the paver instead of being installed on the outermost side of the paver. When the main machine is working, the beam will travel on the foundation of the middle area of ​​the road with good flatness, which greatly reduces the influence of the foundation error on both sides of the road. After adopting the spanning beam design scheme, the entire average beam length can be increased, which greatly improves the accuracy of road leveling control. At the same time, floating beams and rear beams are respectively set on the front and rear sides of the main machine to reduce foundation errors and make full use of the good flatness of the newly paved and uncompacted road surface, thus realizing independent control of the flatness of the front and rear sides of the main machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic structural diagram of a spanning average beam for an asphalt paver provided in an embodiment of the present utility model;

[0023] Figure 2A three-dimensional schematic diagram of a walking assembly provided in an embodiment of the present utility model;

[0024] Figure 3 This is a structural schematic diagram of the sliding shoe assembly provided in an embodiment of the present utility model.

[0025] Description of reference numerals:

[0026] 1. Traction cross frame; 2. Connecting cross beam; 21. Front connecting member; 22. Rear connecting member; 23. Cross beam body; 24. Front cross beam; 25. Rear cross beam; 3. Front walking mechanism; 31. Floating beam; 32. Slide shoe assembly; 33. Slide shoe plate; 331. Lower slide groove; 34. Top mounting plate; 341. Upper slide groove; 35. Elastic buffer member; 351. First rod; 352. Second rod; 353. Rotary connecting shaft ; 354, upper sliding seat; 355, upper telescopic rod; 356, upper spring member; 357, lower sliding seat; 358, lower telescopic rod; 359, lower spring member; 4, rear walking mechanism; 41, rear beam body; 42, walking assembly; 43, walking wheel; 431, axle mounting seat; 432, first wheel body; 433, second wheel body; 44, elastic connecting member; 441, telescopic connecting rod; 442, spring member; 45, rear mounting plate. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-3 As shown, the embodiment of the present invention provides a straddling average beam for an asphalt paver, comprising a front traveling mechanism 3, a rear traveling mechanism 4, a traction cross frame 1 and a connecting cross beam 2. The front traveling mechanism 3 comprises a floating beam 31 and a plurality of sliding shoe assemblies 32 arranged at the bottom of the floating beam 31. The floating beam 31 is mounted on the sliding shoe assemblies 32 by floating. The floating beam 31 is located in front of the main machine screed. The rear traveling mechanism 4 comprises a rear beam body 41. The rear beam body 41 is located behind the main machine screed. The bottom of the rear beam body 41 is provided with a plurality of traveling assemblies. Part 42, the rear beam body 41 is adjustably mounted on the walking component 42, the traction cross frame 1 is mounted on the wall side of the main machine of the paver and is located above the main machine ironing board, the connecting beam 2 is located below the traction cross frame 1, and the two ends of the connecting cross frame are respectively provided with a front connecting member 21 and a rear connecting member 22. A front connecting member is provided at the top of the middle position of the floating beam 31, and the front connecting member is rotatably mounted on the front connecting member 21. A rear connecting member is provided at the top of the middle position of the rear beam body 41, and the rear connecting member is rotatably mounted on the rear connecting member 22.

[0029] As shown in the figure, the straddling averaging beam includes a front traveling mechanism 3, a rear traveling mechanism 4, a traction cross frame 1, and a connecting cross beam 2. The traction cross frame 1 is mounted on the wall of the main machine and above the main machine's screed. The connecting cross beam 2 is located directly below the traction cross frame 1 and is fixedly connected to the traction cross frame 1. The connecting cross beam 2 includes a beam body 23, a front cross beam 24, and a rear cross beam 25. The beam body 23 is fixedly arranged parallel to the traction cross frame 1. The beam body 23 is generally 10-12 meters long and has high rigidity but moderate weight. The front cross beam 24 is connected to the front side of the beam body 23, and the rear cross beam 25 is connected to the rear side of the beam body 23. When the traction cross frame 1 is mounted on the main machine, the front cross beam 24 is located in front of the main machine's screed, and the rear cross beam 25 is located behind the main machine's screed.

[0030] In this embodiment, the front walking mechanism 3 is installed below the front cross beam 24. The front walking mechanism 3 includes a floating beam 31. A plurality of groups of sliding shoe assemblies 32 are arranged at the bottom of the floating beam 31. The plurality of groups of sliding shoe assemblies 32 are arranged in sequence along the length direction of the floating beam 31. The sliding shoe assemblies 32 include sliding shoe plates 33 that can walk along the road surface. The size of the sliding shoe plates 33 should not be too small, otherwise their stability will be insufficient, and the sliding shoe assemblies 32 have an elastic buffering effect, thereby being able to buffer the walking fluctuations of the sliding shoe plates 33. A front connecting piece is provided in the middle position of the floating beam 31, and a front connecting member 21 is provided at the front end position of the front cross beam 24. The front connecting member 21 can be a connecting rod or a connecting plate, and the front connecting piece is rotatably connected to the lower end of the front connecting member 21.

[0031] In this embodiment, the rear walking mechanism 4 is installed below the rear cross beam 25. The rear walking mechanism 4 includes a rear beam body 41. A plurality of walking components 42 are arranged at the bottom of the rear beam body 41. The plurality of walking components 42 are arranged in sequence along the length direction of the rear beam body 41. The walking components 42 can be a sliding shoe structure or a roller structure. If the walking component 42 is a sliding shoe structure, the sliding shoe plate 33 of the walking component 42 is larger than the sliding shoe plate 33 on the front walking mechanism 3. Preferably, the walking component 42 is a roller structure. Its specific structure will be described later. The walking component 42 also has an elastic buffering effect. A rear connecting piece is provided in the middle position of the rear beam body 41, and a rear connecting member 22 is provided at the rear end position of the rear cross beam 25. The rear connecting member 22 can be a connecting rod or a connecting plate, and the rear connecting piece is rotatably connected to the lower end of the rear connecting member 22. In this way, during use, when the slipper assembly 32 and the walking assembly 42 encounter obstacles such as stones and cause walking fluctuations during walking, the slipper assembly 32 and the walking assembly 42 have an elastic buffering effect. At the same time, since there are multiple slipper assemblies 32 and the walking assembly 42, and the floating beam 31 is connected to the front end position of the front cross beam 24, the rear beam body 41 is connected to the rear end position of the rear cross beam 25, a lever-type spanning beam structure is formed, which reduces the fluctuations transmitted to the cross beam body 23 and reduces the impact on the flatness reaction device of the paver.

[0032] The asphalt paver spanning average beam provided by the embodiment of the present invention includes a front walking mechanism 3, a rear walking mechanism 4, a traction cross frame 1 and a connecting cross beam 2. The traction cross frame 1 is installed on the wall side of the main machine of the paver and is located above the main machine ironing plate. The connecting cross beam 2 is located below the traction cross frame 1. The front end of the connecting cross beam 2 is provided with a front walking mechanism 3, the front walking mechanism 3 includes a floating beam 31 and a plurality of sliding shoe assemblies 32 arranged at the bottom of the floating beam 31. The rear end of the connecting cross beam 2 is provided with a rear walking mechanism 4, the rear walking mechanism 4 includes a rear beam body 41, and a plurality of walking assemblies 42 are arranged at the bottom of the rear beam body 41. The averaging beam structure spans over the screed of the paver instead of being installed on the outermost side of the paver. When the main machine is working, the entire averaging beam structure will run on the foundation of the well-flattened middle area of ​​the road, which greatly reduces the influence of the foundation error on both sides of the road. After adopting the spanning beam design scheme, the length of the entire averaging beam can be increased, which greatly improves the accuracy of the road leveling control. At the same time, floating beams 31 and rear beams 41 are respectively arranged on the front and rear sides of the main machine to reduce foundation errors and make full use of the good flatness of the newly paved and uncompacted road surface, thereby realizing independent control of the flatness of the front and rear sides of the main machine.

[0033] In this embodiment, preferably, the walking assembly 42 includes a walking wheel 43 and a rear mounting plate 45. The rear mounting plate 45 is fixedly mounted on the bottom of the rear beam body 41. The walking wheel 43 is located directly below the rear mounting plate 45. The walking wheel 43 includes an axle mounting seat 431 and a first wheel body 432 and a second wheel body 433 arranged coaxially. There is an installation gap between the first wheel body 432 and the second wheel body 433 for installation of the axle mounting seat 431. The first wheel body 432 and the second wheel body 433 are connected by a connecting shaft, and the connecting shaft can be rotatably mounted on the axle mounting seat 431.

[0034] In this embodiment, preferably, the walking assembly 42 also includes an elastic connecting member 44, which includes a telescopic connecting rod 441 and a first spring member 442. The lower end of the telescopic connecting rod 441 is fixedly mounted on the shaft mounting seat 431, and the upper end of the telescopic connecting rod 441 is fixedly connected to the rear mounting plate 45. The telescopic connecting rod 441 is a prior art and will not be described in detail. There are two telescopic connecting rods 441, and the two telescopic connecting rods 441 are arranged in parallel. The first spring member 442 is located in the middle of the telescopic connecting rod 441, and the lower end of the first spring member 442 is fixedly mounted on the shaft mounting seat 431. The first spring member 442 is fixedly connected to the circular block on the shaft mounting seat 431, and the upper end of the first spring member 442 is fixedly mounted on the bottom of the rear mounting plate 45. In this way, when the first wheel body 432 and the second wheel body 433 are bumpy, the length of the telescopic connecting rod 441 changes, and the first spring member 442 elastically buffers the movement of the walking wheel 43. If the walking wheel 43 encounters an obstacle and is pressed to move upward, it presses the first spring member 442. When the pressing force of the walking wheel 43 disappears, the walking wheel 43 returns to its initial state under the action of the first spring member 442.

[0035] In this embodiment, preferably, the sliding shoe assembly 32 includes a sliding shoe plate 33 and a top mounting plate 34. The top mounting plate 34 is fixedly mounted on the floating beam 31. The sliding shoe plate 33 is located directly below the top mounting plate 34. The elastic buffer component 35 is provided between the sliding shoe plate 33 and the top mounting plate 34 for elastically buffering the movement of the sliding shoe plate 33. In this way, when the sliding shoe plate 33 moves along the road surface and encounters stones or the like and is bumped, the elastic buffer component 35 can elastically buffer the bumping of the sliding shoe plate 33.

[0036] In this embodiment, preferably, the elastic buffer member 35 includes a first rod body 351 and a second rod body 352 arranged opposite to each other, the middle position of the first rod body 351 and the second rod body 352 is connected by a rotating connecting shaft 353, the bottom of the top mounting plate 34 is provided with an upper slide groove 341, the top of the first rod body 351 and the second rod body 352 are both provided with an upper sliding seat 354, the top of the first rod body 351 and the second rod body 352 are all rotatably connected together, and the upper sliding seat 354 is slidably connected in the upper slide groove 341 An upper telescopic rod 355 is provided between the two upper sliding seats 354, and an upper spring member 356 is sleeved on the upper telescopic rod 355. A lower sliding groove 331 is provided on the top of the sliding shoe plate 33, and a lower sliding seat 357 is provided at the bottom of the first rod body 351 and the second rod body 352. The lower ends of the first rod body 351 and the second rod body 352 are also rotatably connected to the lower sliding seat 357, and the lower sliding seat 357 is slidably connected in the lower sliding groove 331. A lower telescopic rod 358 is provided between the two lower sliding seats 357, and a lower spring member 359 is sleeved on the lower telescopic rod 358.

[0037] When the sliding shoe assembly 32 is in motion, when the sliding shoe plate 33 encounters an obstacle such as a stone, the sliding shoe plate 33 is pressed and moves upward. At this time, the first rod body 351 and the second rod body 352 rotate, and the distance between the top mounting plate 34 and the sliding shoe plate 33 becomes smaller. During this process, the two upper sliding seats 354 move in the direction of separation from each other, the upper telescopic rod 355 becomes longer, the upper spring member 356 is stretched and has elasticity, and the two lower sliding seats 357 move in the direction of separation from each other, the lower telescopic rod 358 becomes longer, and the lower spring member 359 is stretched and has elasticity, thereby achieving elastic buffering. When the sliding shoe plate 33 is not pressed, under the action of the upper spring member 356 and the lower spring member 359, the two upper sliding seats 354 move toward each other, and the two lower sliding seats 357 also move toward each other, thereby causing the first rod body 351 and the second rod body 352 to rotate, and the distance between the top mounting plate 34 and the sliding shoe plate 33 increases until it returns to the initial state. During this process, the upper telescopic rod 355 and the lower telescopic rod 358 are both shortened to their initial lengths.

[0038] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A spanning average beam for an asphalt paver, characterized in that: include: A traction cross frame, which is installed on the wall side of the main machine of the paver and is located above the main machine screed; A front traveling mechanism, comprising a floating beam and a plurality of sliding shoe assemblies arranged at the bottom of the floating beam, the floating beam being floatingly mounted on the sliding shoe assemblies, and the floating beam being located in front of the main machine screed; A rear traveling mechanism, comprising a rear beam, the rear beam being located behind the main machine screed, a plurality of traveling assemblies being provided at the bottom of the rear beam, and the rear beam being adjustably mounted on the traveling assemblies; A connecting crossbeam is located below the traction cross frame, and a front connecting member and a rear connecting member are respectively provided at both ends of the connecting crossbeam. A front connecting member is provided at the top of the middle position of the floating beam, and the front connecting member is rotatably mounted on the front connecting member. A rear connecting member is provided at the top of the middle position of the rear beam, and the rear connecting member is rotatably mounted on the rear connecting member.

2. The asphalt paver spanning average beam according to claim 1, characterized in that: The traveling assembly includes traveling wheels and a rear mounting plate. The rear mounting plate is fixedly mounted on the bottom of the rear beam body, and the traveling wheels are located directly below the rear mounting plate.

3. The asphalt paver spanning average beam according to claim 2, characterized in that: The traveling wheel comprises an axle mounting seat and a first wheel body and a second wheel body which are coaxially arranged. The first wheel body and the second wheel body are connected via a connecting shaft which is rotatably mounted on the axle mounting seat.

4. The asphalt paver spanning average beam according to claim 3, characterized in that: The walking assembly further includes an elastic connecting member, which includes a telescopic connecting rod and a spring member. The lower end of the telescopic connecting rod is fixedly mounted on the shaft mounting seat, and the upper end of the telescopic connecting rod is fixedly connected to the rear mounting plate.

5. The asphalt paver spanning average beam according to claim 4, characterized in that: The lower end of the spring member is fixedly connected to the circular block on the shaft mounting seat, and the upper end of the spring member is fixedly mounted on the bottom of the rear mounting plate.

6. The asphalt paver spanning average beam according to claim 1, characterized in that: The sliding shoe assembly includes a sliding shoe plate and a top mounting plate. The top mounting plate is fixedly mounted on the floating beam, and the sliding shoe plate is located directly below the top mounting plate.

7. The asphalt paver spanning average beam according to claim 6, characterized in that: An elastic buffering member is also included, which is arranged between the sliding shoe plate and the top mounting plate and is used for elastically buffering the movement of the sliding shoe plate.

8. The asphalt paver spanning average beam according to claim 7, characterized in that: The elastic buffer component includes a first rod and a second rod that are arranged opposite to each other, and the middle positions of the first rod and the second rod are connected by a rotating connecting shaft.

9. The asphalt paver spanning average beam according to claim 8, characterized in that: An upper slide groove is provided at the bottom of the top mounting plate, and upper sliding seats are provided at the tops of the first rod body and the second rod body. The upper sliding seats are slidably connected in the upper slide groove, and an upper telescopic rod is provided between the two upper sliding seats, and an upper spring member is sleeved on the upper telescopic rod.

10. The asphalt paver spanning average beam according to claim 9, characterized in that: A lower sliding groove is provided on the top of the sliding shoe plate, and a lower sliding seat is provided at the bottom of the first rod body and the second rod body. The lower sliding seat is slidably connected in the lower sliding groove, and a lower telescopic rod is provided between the two lower sliding seats, and a lower spring member is sleeved on the lower telescopic rod.

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