Ironing assembly and paver

Abstract

An ironing assembly and a paver belong to the technical field of pavers, the ironing assembly comprises an ironing plate main body and a reinforcing mechanism, the reinforcing mechanism comprises two main beam sections, the two main beam sections are rotatably connected through a rotating assembly, the rotating assembly comprises a first connecting end and a second connecting end, the cross section of the first connecting end is U-shaped, and the cross section of the second connecting end is U-shaped. The cross section of the first connecting end is in a convex shape, the cross section of the second connecting end is in a convex shape, accurate butt joint can be achieved when the first connecting end and the second connecting end are rotationally matched through the convex-concave design, stress distribution of the contact face can be more uniform through convex-concave matching, and the overall strength of the two main beam sections in the horizontal direction is improved. By the adoption of the structure, damage to parts caused by stress concentration is avoided, the connecting rigidity is guaranteed on the occasion where large loads or impact needs to be borne, better safety guarantee can be provided through convex-concave matching, and safety accidents caused by loosening or falling of the parts are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pavers, in particular to a screed assembly and a paver. Background Art

[0002] A paver is a construction device mainly used for paving various materials on the base course and surface course of highways. A paver mainly consists of parts such as traction, paving, compaction, and screeding. Among them, the screeding device consists of a screed board, a thickness adjuster, a camber adjuster, a heating device, etc. The camber adjuster is installed on the base frame hinged at both ends of the screed board and is used to adjust the screed board to the required camber.

[0003] In practical applications, for large pavers (such as pavers over 12 meters), when performing paving operations, the screed board is extremely prone to bending and sinking under the influence of gravity. Or when the screed board moves forward, the mixture in the hopper will exert a certain resistance on the screed board and there is friction between the bottom plate of the screed board and the road surface, resulting in the screed board bending backward and twisting. To improve the anti-deformation ability of the screed board, a reinforcing beam structure is generally connected to the rear side of the screed board (such as the publication number CN102787545A).

[0004] In actual use, it is necessary to adjust the camber of the screed board according to requirements. For the existing reinforcing beam structure of the screed board, the main beam is divided into multiple beam segments, and adjacent beam segments are rotatably connected through a rotating shaft so that the main beam can be adjusted according to the camber of the screed board. However, in the way that adjacent beam segments are only connected by a rotating shaft, when the reinforcing beam bears a large load, the rotating shaft is extremely prone to wear or damage, resulting in a reduction in connection stiffness and a decrease in the overall stability of the support system. Summary of the Utility Model

[0005] To solve the technical problem in the above background art that for the existing reinforcing beam structure with adjustable camber of the screed board, adjacent beam segments are only connected by a rotating shaft, and the rotating shaft is extremely prone to wear or damage, resulting in a reduction in connection stiffness and a decrease in support stability, the utility model provides a screed assembly and a paver.

[0006] The technical solution of the utility model is as follows:

[0007] The utility model provides an ironing assembly, which includes an ironing plate body. A strengthening mechanism is connected to the rear side of the ironing plate body. The strengthening mechanism includes two main beam segments. The two main beam segments are symmetric about the center line of the ironing plate body along the width direction of the ironing plate body. The main beam segments are fixedly connected to the ironing plate body through connecting columns. The two main beam segments are rotationally connected through a rotating assembly. The rotating assembly includes a first connection end and a second connection end. The first connection end is fixedly connected to one main beam segment, and the second connection end is fixedly connected to the other main beam segment. The cross-section of the first connection end is concave-shaped, and the cross-section of the second connection end is convex-shaped. The second connection end is inserted into the first connection end and connected through a rotating shaft. The convex and concave designs enable the first connection end and the second connection end to achieve precise docking during rotational cooperation, reducing looseness or instability caused by excessive fitting gaps. Moreover, the convex-concave fit can distribute the stress on the contact surface more evenly, improving the strength of the two main beam segments in the overall horizontal direction, avoiding component damage caused by stress concentration, ensuring the connection stiffness in situations where large loads or impacts need to be borne, providing better safety protection, preventing safety accidents caused by component loosening or detachment, reducing the frictional resistance generated due to uneven fitting surfaces or excessive gaps, and to a certain extent reducing the noise and vibration during operation and improving operation stability.

[0008] Preferably, through holes are provided on both the first connection end and the second connection end. One end of the rotating shaft is fixedly provided with a fixing plate. The cross-section of the fixing plate is in a water droplet shape, and the cross-section of the fixing plate is larger than the through hole. The fixing plate is fixedly connected to the first connection end through bolts, facilitating the fixed connection between the rotating shaft and the first connection end.

[0009] Preferably, the ironing plate body includes two basic frames. The two basic frames are rotationally connected through a pin shaft. The rotating shaft is coaxially arranged with the pin shaft, enabling the strengthening mechanism to be adjusted following the adjustment of the basic frame, ensuring both the strength requirements and facilitating the adjustment of the camber, saving manpower, significantly improving the construction efficiency, and reducing the construction labor intensity.

[0010] Preferably, a piston cylinder is hinged between one side of the rotating end of the main beam segment and the connecting column on the same main beam segment close to the rotating end, forming a triangular structure among the connecting column, the piston cylinder, and the corresponding main beam segment, improving the connection stability and connection stiffness at the rotational joint of the two main beam segments.

[0011] Preferably, a piston cylinder is hinged between one end of the main beam segment far from its rotating end and the rear side wall of the same side end of the ironing plate body, realizing the connection between the end of the main beam segment and the end of the ironing plate body, and cooperating with the adjacent connecting column to form a triangular structure, improving the anti-deformation ability of the overall ironing plate.

[0012] Preferably, the main beam section includes a plurality of reinforcing beam sections. The plurality of reinforcing beam sections are coaxially arranged, and are detachably connected between adjacent reinforcing beam sections to form a main beam section with adjustable length, so as to adapt to screed bodies with different widths.

[0013] Preferably, the width of the reinforcing mechanism is the same as the width of the screed body, ensuring the overall anti-deformation ability of the screed body.

[0014] The utility model provides a paver which adopts a screeding assembly.

[0015] It can be seen from the above technical solutions that the advantages of the utility model are as follows:

[0016] 1. The two main beam sections are rotatably connected through a rotating assembly. The cross-section of the first connection end of the rotating assembly is concave-shaped, and the cross-section of the second connection end is convex-shaped. The convex and concave designs enable precise docking between the first connection end and the second connection end during rotational mating, reducing looseness or instability caused by excessive mating gaps. Moreover, the convex-concave fit can distribute the stress on the contact surface more evenly, improving the strength of the two main beam sections in the overall horizontal direction, avoiding component damage caused by stress concentration, ensuring connection stiffness in situations where large loads or impacts need to be borne, providing better safety protection against component loosening or detachment that may cause safety accidents. The convex-concave fit reduces the frictional resistance generated due to uneven mating surfaces or excessive gaps, and can reduce noise and vibration during operation to a certain extent, improving the running smoothness.

[0017] 2. One end of the rotating shaft is fixedly provided with a fixing plate. The cross-section of the fixing plate is water-drop-shaped, and the cross-section of the fixing plate is larger than the through-hole. The fixing plate is fixedly connected to the first connection end through bolts, facilitating the fixed connection between the rotating shaft and the first connection end.

[0018] 3. The rotating shaft and the pin shaft are coaxially arranged, enabling the reinforcing mechanism to be adjusted following the adjustment of the basic frame, ensuring both strength requirements and facilitating the adjustment of the camber, saving manpower, significantly improving the construction efficiency, and reducing the construction labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a top view structural schematic diagram of the reinforcing mechanism according to one or more embodiments of the utility model;

[0021] Figure 2 Schematic side sectional structure view of the ironing assembly according to one or more embodiments of the present utility model;

[0022] Figure 3 Schematic installation structure view of the rotating shaft according to one or more embodiments of the present utility model;

[0023] Figure 4 is Figure 1 Partial enlarged structure view of the rotational connection between two main beam segments in the structure shown;

[0024] The components represented by each reference numeral in the figure are:

[0025] 1. First beam segment; 2. Second beam segment; 3. Third beam segment; 4. Connecting column; 5. Piston cylinder; 6. Rotating shaft; 7. Fixed plate; 8. Bolt; 9. First connection end; 10. Second connection end; 11. Ironing plate main body; 12. Pin shaft. Specific embodiments

[0026] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this patent.

[0027] Embodiment 1

[0028] In a typical embodiment of the present utility model, as Figures 1 - 4 shown, an ironing assembly is proposed, including: an ironing plate main body 11 and a strengthening mechanism. The ironing plate main body 11 includes two hinged basic frames. A bottom plate is provided at the bottom of the basic frame. The strengthening mechanism is symmetrically fixedly installed along the width direction of the ironing plate main body 11 with respect to the center line of the ironing plate main body 11 at the rear side of the ironing plate main body 11. The width of the strengthening mechanism is the same as the width of the ironing plate main body 11, playing a role in supporting and strengthening the ironing plate main body 11.

[0029] The strengthening mechanism includes two main beam segments, which are rotatably connected between the two main beam segments. The main beam segments are detachable structures. Each main beam segment includes a plurality of strengthening beam segments, and the plurality of strengthening beam segments are coaxially arranged. Adjacent strengthening beam segments are detachably connected through the cooperation of flanges and bolts.

[0030] Specifically as Figure 1As shown in the figure, the main beam section includes a first beam section 1, a second beam section 2, and a third beam section 3 that are coaxially arranged. The first beam section 1 and the second beam section 2, as well as the second beam section 2 and the third beam section 3, are detachably connected by flanges to form a main beam section with adjustable length, so as to adapt to screed bodies 11 of different widths.

[0031] As Figure 3 , Figure 4 shown in the figure, two main beam sections are rotatably connected by a rotating assembly. The rotating assembly includes a first connection end 9, a second connection end 10, and a rotating shaft 6. Among them, the first connection end 9 is fixedly arranged at the rotating end of one main beam section, the second connection end 10 is fixedly arranged at the rotating end of the other main beam section, and the first connection end 9 and the second connection end 10 are inserted together and connected by the rotating shaft 6.

[0032] Specifically, the cross-section of the first connection end 9 is concave-shaped, the cross-section of the second connection end 10 is convex-shaped, the second connection end 10 is inserted into the first connection end 9, and the rotating shaft 6 penetrates through the first connection end 9 and the second connection end 10, so that the first connection end 9 and the second connection end 10 are rotatably connected.

[0033] The convex and concave designs enable the first connection end 9 and the second connection end 10 to achieve precise docking during rotational mating, reducing looseness or instability caused by excessive mating gaps. Moreover, the convex-concave fit can distribute the stress on the contact surface more evenly, improving the strength of the two main beam sections in the overall horizontal direction, avoiding component damage caused by stress concentration, ensuring connection stiffness in situations where large loads or impacts need to be borne, providing better safety protection, preventing safety accidents caused by component loosening or detachment, and reducing frictional resistance generated by uneven mating surfaces or excessive gaps, which can reduce noise and vibration during operation to a certain extent and improve operation stability.

[0034] Both the first connection end 9 and the second connection end 10 are provided with through holes for installing the rotating shaft 6. One end of the rotating shaft 6 is fixedly provided with a fixing plate 7. The cross-section of the fixing plate 7 is in the shape of a water droplet, which is convenient for installing the rotating shaft 6. The cross-sectional area of the fixing plate 7 is larger than the cross-sectional areas of the through holes on the first connection end 9 and the second connection end 10. The fixing plate 7 is fixedly connected to the first connection end 9 by bolts 8.

[0035] The main beam section is fixedly connected to the rear side of the screed body 11 through a connecting column 4. The connecting column 4 is of a rigid column structure. Both ends of the connecting column 4 are detachably connected to the corresponding main beam section and the screed body 11 respectively through the cooperation of bolts and flanges to achieve the connection between the main beam section and the screed body 11.

[0036] On one side of the rotating end of the main beam section, an ear plate is welded and fixed. On the connecting column 4 near the rotating end of the same main beam section, an ear plate is also welded and fixed. A piston cylinder 5 is hinged between the two ear plates, so that a triangular structure is formed among the connecting column 4, the piston cylinder 5 and the corresponding main beam section, as Figure 1 shown. On both sides of the rotating connection of the two main beam sections, two piston cylinders 5 are arranged oppositely to improve the connection stability and connection stiffness of the rotating connection of the two main beam sections.

[0037] An ear plate is fixedly arranged at one end of the main beam section far from the rotating end. An ear plate is also fixedly arranged on the rear side wall of the same side end of the screed body 11. The two ear plates are hinged through the piston cylinder 5 to realize the connection between the end of the main beam section and the end of the screed body 11. Cooperating with the adjacent connecting column 4, a triangular structure is formed to improve the anti-deformation ability of the whole screed.

[0038] As Figure 2 shown, the two basic frames of the screed body 11 are rotatably connected through a pin shaft 12. The rotating shaft 6 between the two main beam sections is coaxially arranged with the pin shaft 12, so that the strengthening mechanism can be adjusted following the adjustment of the basic frame, which not only ensures the strength requirement, but also facilitates the adjustment of the camber, saves manpower, significantly improves the construction efficiency and reduces the construction labor intensity.

[0039] Embodiment 2

[0040] In a typical implementation manner of the present utility model, a paver is proposed, which adopts the screeding assembly mentioned in Embodiment 1, while ensuring the function of adjustable camber of the screed, ensuring its overall stiffness.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ironing assembly, comprising: The screed body (11), characterized in that a strengthening mechanism is connected to the rear side of the screed body (11), the strengthening mechanism includes two main beam segments, the two main beam segments are symmetric about the center line of the screed body (11) in the width direction of the screed body (11), the main beam segments are fixedly connected to the screed body (11) through connecting columns (4), and the two main beam segments are rotatably connected through a rotating assembly, the rotating assembly includes a first connection end (9) and a second connection end (10), the first connection end (9) is fixedly connected to one main beam segment, the second connection end (10) is fixedly connected to the other main beam segment, the cross section of the first connection end (9) is concave, the cross section of the second connection end (10) is convex, and the second connection end (10) is inserted into the first connection end (9) and connected through a rotating shaft (6).

2. The ironing assembly according to claim 1, wherein Through holes are provided on both the first connection end (9) and the second connection end (10), a fixing plate (7) is fixedly provided at one end of the rotating shaft (6), the cross section of the fixing plate (7) is in the shape of a water droplet, the cross section of the fixing plate (7) is larger than the through hole, and the fixing plate (7) is fixedly connected to the first connection end (9) through a bolt (8).

3. The ironing assembly according to claim 1, characterized in that The screed body (11) includes two basic frames, and the two basic frames are rotatably connected through a pin shaft (12), and the rotating shaft (6) is coaxially arranged with the pin shaft (12).

4. The ironing assembly according to claim 1, wherein, A piston cylinder (5) is hinged between the rotating end side of the main beam segment and the connecting column (4) on the same main beam segment close to the rotating end.

5. The ironing assembly according to claim 4, characterized in that, A piston cylinder (5) is hinged between the end of the main beam segment far from its rotating end and the rear side wall of the same side end of the screed body (11).

6. The ironing assembly according to claim 1, characterized in that, The main beam segment includes a plurality of strengthening beam segments, the plurality of strengthening beam segments are coaxially arranged, and the adjacent strengthening beam segments are detachably connected.

7. The ironing assembly according to claim 1, characterized in that, The width of the strengthening mechanism is the same as the width of the screed body (11).

8. A paver, characterized in that, The screeding assembly according to any one of claims 1-7 is adopted.

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