Wear-resistant screed mechanism of a paving machine

Abstract

This invention discloses a wear-resistant screeding mechanism for a paver, including a main screed plate with a curved handle mounted on it. Both sides of the main screed plate are equipped with auxiliary screed plates and their folding structures. Each auxiliary screed plate and its folding structure includes a connecting seat B fixed to the end of the main screed plate and a mounting frame. A connecting shaft passes through the mounting frame, and an L-shaped foot is movably connected to the mounting frame via the connecting shaft. A folding plate is fixed to the end of the L-shaped foot. This wear-resistant screeding mechanism for the paver, by providing auxiliary screed plates and their folding structures that can rotate and unfold from 0 to 180 degrees on both sides of the main screed plate, utilizes the linkage of the connecting shaft, L-shaped foot, and connecting arms A and B to achieve flexible splicing and extension of the folding plate and the main screed plate. The overall screeding width can be freely adjusted according to the width of the road surface, effectively solving the defects of traditional electric screed plates with fixed length and inability to change the width of a single operation.

Description

Technical Field

[0001] This invention relates to the field of pavers, specifically to a wear-resistant screeding mechanism for a paver. Background Technology

[0002] The electric heating plate of the handheld paver has a built-in resistance heating tube. When powered on, it converts electrical energy into heat energy, raising the plate to the construction temperature suitable for the asphalt mixture (usually about 180℃-200℃). During construction, the worker holds the operating lever and places the preheated electric heating plate steadily on the surface of the paved asphalt. Through its own weight and the slight pressure applied by the worker, the loose asphalt is heated, softened, compacted, shaped, and smoothed. The high temperature of the plate prevents asphalt from sticking and allows the asphalt particles to remelt and flow, eliminating surface segregation, pitting, pores, and unevenness. Combined with the back-and-forth pushing or reciprocating ironing action, a dense, smooth, and uniform surface layer is formed on the road surface.

[0003] Regarding the aforementioned paver patent, a search revealed Chinese patent CN107574736A, which discloses a manual paver. The patent includes an electric heating plate with an internal heating element. The bottom plate of the electric heating plate is curved, and a top cover is provided. An angle adjustment frame is mounted on the top cover, and a handle is detachably connected to the angle adjustment frame. This manual paver is reasonably designed; the curved structure of the bottom plate prevents material from being carried along the bottom plate during paving pullback, and the handle on the top cover is detachable.

[0004] Although the above-mentioned device is suitable for paving small sites and saves time and effort, in actual use, the length of the electric ironing plate is fixed, resulting in a fixed width of operation per operation. When constructing large areas, the number of repeated operations is high and the construction period is long. Moreover, repeated ironing can easily cause local asphalt to age, become brittle, and crack due to repeated heating. Summary of the Invention

[0005] The purpose of this invention is to provide a wear-resistant screeding mechanism for a paver to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a wear-resistant screeding mechanism for a paver is provided, including a main screed plate, on which a curved handle is installed, and on both sides of the main screed plate are auxiliary screed plates and their folding structures. The auxiliary screed plates and their folding structures include a connecting seat B fixed to the end of the main screed plate and a mounting frame. A connecting shaft is inserted through the mounting frame, and the mounting frame is movably connected to an L-shaped foot through the connecting shaft. A folding plate is fixed to the end of the L-shaped foot, and the connecting shaft passes through the L-shaped foot and is screwed with a locking nut.

[0007] Furthermore, a connecting seat A is fixed to the end of the folding plate, and a connecting arm A is rotatably connected to the connecting seat A. A connecting arm B is rotatably connected to the connecting seat B, and both the connecting arm B and the connecting arm A have an "eight" shaped structure.

[0008] Furthermore, both connecting arm B and connecting arm A have an arc-shaped structure, and both connecting arm B and connecting arm A have a weight reduction port through them. Connecting arm B has a main shaft at its end, and connecting arm B is movably connected to connecting arm A through the main shaft at its end.

[0009] Furthermore, the folding plate rotates around the connecting shaft via connecting arms B and A, and the folding angle of the folding plate is 0-180 degrees. The folding plate is in the unfolded state and is locked by the connecting shaft and locking nut. The folding plate is also supported by the mounting frame in the unfolded state.

[0010] Furthermore, the main ironing board and the auxiliary ironing board, as well as the bottom of their folding structure, are equipped with heating devices. The heating devices include a leveling and wear-resistant ironing board installed at the bottom of the folding board. The top of the leveling and wear-resistant ironing board near the mounting frame is provided with an anti-interference rounded corner. The bottom surface of the leveling and wear-resistant ironing board is flush with the bottom surface of the mounting frame.

[0011] Furthermore, a heating space is provided within the folded plate, and a heating tube is provided within the heating space. The heating tube has an "S" shaped structure, and the surface of the heating tube is covered with a gain bushing, which includes, but is not limited to, an insulating bushing and a graphite heat-conducting sheet.

[0012] Furthermore, the gain bushing has an exposed channel, which is positioned opposite to the heating tube. The gain bushing is adapted to the size of the heating space, and the gain bushing is inserted into the heating space and screwed in. The surface of the heating space is also covered with a protective plate, which is screwed onto the gain bushing.

[0013] Furthermore, the curved handle includes a connecting frame fixed on the main ironing plate, and the connecting frame has a semi-circular structure. A fixing seat is rotatably connected to the connecting frame, and the fixing seat is fixed to the end of the curved handle. An adjustment channel is provided through the side wall of the connecting frame, and the adjustment channel has an arc-shaped structure.

[0014] Furthermore, the fixed base has a circular structure, and both sides of the fixed base are provided with adjusting studs. The adjusting studs pass through the adjusting channel and are screwed with adjusting nuts. The curved handle has a "U" shaped structure, and the use angle of the curved handle is adjusted by adjusting studs, adjusting nuts, and adjusting channels. The adjusting channels and the fixed base have a concentric circle structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution sets up auxiliary ironing plates that can rotate and unfold from 0 to 180 degrees on both sides of the main ironing plate and their folding structure. By utilizing the linkage of the connecting shaft, L-shaped feet, and connecting arms A and B, the folding plate body and the main ironing plate can be flexibly spliced ​​and extended. The overall ironing operation width can be freely adjusted according to the width of the construction road surface. This effectively solves the defects of traditional electric ironing plates with fixed length and inability to change the width of a single operation. It significantly reduces the number of repeated ironing operations when constructing large-area asphalt pavement, significantly shortens the construction period, and improves the overall construction efficiency.

[0016] 2. This solution uses an S-shaped heating tube within the heating space of the folded plate, along with a gain bushing covered with an insulating bushing and a graphite heat-conducting sheet, to ensure that heat is evenly transferred to the leveling and wear-resistant ironing plate. Combined with the expandable width structural design, it reduces the number of times the asphalt pavement needs to be repeatedly ironed in certain areas, avoiding problems such as aging, brittleness, and cracking of the asphalt due to repeated heating. At the same time, it ensures that the pavement is heated evenly and the ironing density is consistent, thereby improving the forming quality and service life of the asphalt pavement.

[0017] 3. In this solution, the folding plate is unfolded to 180 degrees and flush with the main ironing plate when in use. It is locked with locking nuts and reliably supported by the mounting frame, effectively expanding the working width to adapt to different construction needs. When not in use, the folding plate can be folded close to the main ironing plate, greatly reducing the space occupied by the overall mechanism and facilitating the storage, handling and handling of the equipment. At the same time, the weight reduction ports on connecting arms A and B reduce the weight of the folding structure, making folding and unfolding operations more labor-saving and convenient, without affecting the structural support stability. The figure-eight arc connecting arm design can also avoid movement interference during folding and unfolding, further improving the smoothness and reliability of folding, storage and unfolding.

[0018] 4. In this design, the curved handle rotates and engages with a circular fixed base and a semi-circular connecting frame. Combined with an arc-shaped adjustment channel, adjustment stud, and adjustment nut concentrically positioned with the fixed base, it allows for continuous adjustment and locking of the operating angle. This adapts to different heights, construction postures, and paving angles, improving the comfort and stability of handheld operation. The U-shaped curved handle distributes force evenly and is easy to grip. The concentric design of the adjustment channel and fixed base ensures smooth, uninterrupted rotation during adjustment. The screw-locking mechanism of the adjustment stud and nut is reliable and secure, preventing the handle from loosening or shifting during operation. The overall structure is simple and easy to adjust, significantly improving the paver's applicability and ease of operation in various construction scenarios. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a bottom view of the present invention; Figure 3This is a schematic diagram of the curved handle and its connection structure of the present invention; Figure 4 This is a cross-sectional view of the curved handle of the present invention; Figure 5 This is a schematic diagram of the auxiliary ironing plate and its connection structure of the present invention; Figure 6 This is a schematic diagram of the auxiliary ironing plate and its folding structure folded 180 degrees according to the present invention; Figure 7 This is a schematic diagram of the folding plate structure and its connection structure of the present invention; Figure 8 This is a schematic diagram of the protective plate and its connection structure of the present invention; Figure 9 This is a schematic diagram of the heating tube and its connection structure of the present invention.

[0020] Numbered in the diagram: 100, Main ironing board; 200, Secondary ironing board and its folding structure; 20, L-shaped foot; 21, Folding board body; 2100, Heating device; 210, Leveling and wear-resistant ironing board; 211, Protective plate; 212, Gain bushing; 213, Exposed channel; 214, Heating space; 215, Heating tube; 22, Connecting seat A; 23, Connecting arm A; 24, Connecting arm B; 25, Main shaft; 26, Connecting seat B; 27, Mounting frame; 28, Connecting shaft; 29, Locking nut; 300, Curved handle; 31, Fixed seat; 32, Connecting frame; 33, Adjusting stud; 34, Adjusting nut; 35, Adjusting channel. Detailed Implementation

[0021] Please see Figures 1-9 This invention provides a wear-resistant screed mechanism for a paver. The wear-resistant screed mechanism for a paver includes a main screed plate 100, on which a curved handle 300 is installed. Both sides of the main screed plate 100 are provided with auxiliary screed plates and their folding structures 200. The auxiliary screed plates and their folding structures 200 include a connecting seat B26 fixed to the end of the main screed plate 100 and a mounting frame 27. A connecting shaft 28 is inserted through the mounting frame 27. At the same time, the mounting frame 27 is movably connected to an L-shaped foot 20 through the connecting shaft 28. A folding plate 21 is fixed to the end of the L-shaped foot 20, and the connecting shaft 28 passes through the L-shaped foot 20 and is screwed with a locking nut 29.

[0022] In a preferred embodiment, a connecting seat A22 is fixed to the end of the folding plate 21, and a connecting arm A23 is rotatably connected to the connecting seat A22. A connecting arm B24 is rotatably connected to the connecting seat B26, and both the connecting arm B24 and the connecting arm A23 are in the shape of an "eight".

[0023] Both connecting arms B24 and A23 have an arc-shaped structure, and both connecting arms B24 and A23 have a weight reduction port. The end of connecting arm B24 is provided with a main shaft 25, and connecting arm B24 is movably connected to connecting arm A23 through the main shaft 25 at the end.

[0024] The folding plate 21 rotates around the connecting shaft 28 via connecting arms B24 and A23, and the folding angle of the folding plate 21 is 0-180 degrees. When the folding plate 21 is in the unfolded state, it is locked by the connecting shaft 28 and the locking nut 29, and the folding plate 21 is supported by the mounting frame 27 when it is in the unfolded state.

[0025] like Figure 5-7 As shown: The figure-eight-shaped connecting arms A23 and B24 are movably connected to the main shaft 25, and together with the connecting seats A22 and B26, they form a stable linkage support system. This allows the folding plate 21 to fold and rotate within a wide range of 0-180 degrees with the connecting shaft 28 as the center. After unfolding, it can be locked by the locking nut 29 and reliably supported by the mounting frame 27. This ensures smooth and uninterrupted folding action and sufficient structural strength during unfolding. At the same time, the weight-reducing openings on the connecting arms A23 and B24 can reduce the overall weight and reduce the operating load. The figure-eight-shaped arc design can also effectively avoid motion interference, improve the stability and safety of the folding and unfolding process, and make the width adjustment of the auxiliary ironing plate more flexible and reliable.

[0026] like Figure 1-4 As shown: By setting auxiliary ironing plates and their folding structures 200 that can be rotated and unfolded from 0 to 180 degrees on both sides of the main ironing plate 100, and by utilizing the linkage of the connecting shaft 28, L-shaped foot 20, connecting arm A23 and connecting arm B24, the folding plate 21 and the main ironing plate 100 can be flexibly spliced ​​and extended. The overall ironing operation width can be freely adjusted according to the width of the construction road surface, which effectively solves the defects of the traditional electric ironing plate with fixed length and inability to change the width of a single operation. It greatly reduces the number of repeated ironing operations when constructing large-area asphalt pavement, significantly shortens the construction period, and improves the overall construction efficiency.

[0027] like Figure 5-7As shown: In this solution, the auxiliary ironing boards on both sides of the main ironing board 100 and their folding structure 200, through the linkage of the connecting shaft 28, L-shaped feet 20, and connecting arms A23 and B24 with an eight-shaped arc structure, can flexibly fold and unfold the folding board 210-180 degrees. When in use, the folding board 21 is unfolded to 180 degrees and flush with the main ironing board 100, locked by the locking nut 29 and reliably supported by the mounting frame 27, effectively expanding the working width to adapt to different construction needs. When not in use, the folding board 21 can be folded to the side. With the main ironing board in a near-100mm configuration, the overall space occupied by the mechanism is significantly reduced, making it easier to store, transport, and transport the equipment. At the same time, the weight-reducing ports on connecting arms A23 and B24 reduce the weight of the folding structure, making folding and unfolding operations more effortless and convenient, without affecting the structural support stability. The figure-eight arc-shaped connecting arm design also avoids movement interference during folding and unfolding, further improving the smoothness and reliability of folding, storage, and unfolding. This solves the problems of traditional fixed-length ironing boards being inconvenient to store, transport, and adapt to different working widths.

[0028] The main ironing board 100 and the auxiliary ironing board and their folding structure 200 are both equipped with heating devices 2100 at the bottom. The heating device 2100 includes a leveling and wear-resistant ironing plate 210 installed at the bottom of the folding board 21. The top of the leveling and wear-resistant ironing plate 210 near the mounting frame 27 is provided with an anti-interference rounded corner. The bottom surface of the leveling and wear-resistant ironing plate 210 is flush with the bottom surface of the mounting frame 27.

[0029] A heating space 214 is provided inside the folded plate 21, and a heating tube 215 is provided inside the heating space 214. The heating tube 215 has an "S" shaped structure, and the surface of the heating tube 215 is covered with a gain bushing 212. The gain bushing 212 includes, but is not limited to, an insulating bushing and a graphite heat-conducting sheet.

[0030] The gain bushing 212 has an exposed channel 213, which is opposite to the heating tube 215. The gain bushing 212 is adapted to the size of the heating space 214, and the gain bushing 212 is inserted into the heating space 214 and screwed in. The surface of the heating space 214 is also covered with a protective plate 211, which is screwed onto the gain bushing 212.

[0031] like Figure 8-9 As shown: The main ironing plate 100 and the auxiliary ironing plate and their folding structure 200 are all equipped with heating devices 2100 at the bottom. The leveling and wear-resistant ironing plate 210 at the bottom of the folding plate 21 not only achieves leveling and ironing of the asphalt pavement, but also has wear-resistant properties. The anti-interference rounded corner on the top of the side near the mounting frame 27 can effectively prevent structural interference between the folding plate 21 and the mounting frame 27 during the folding and unfolding process, ensuring smooth operation.

[0032] The bottom surface of the leveling and wear-resistant ironing board 210 is flush with the bottom surface of the mounting frame 27, ensuring that the overall ironing surface is flat and consistent after unfolding, thus improving the quality of road surface ironing. An S-shaped heating tube 215 is installed in the heating space 214 inside the folded board body 21. Compared with the traditional straight heating tube, it can increase the heating area and achieve uniform heat distribution. The gain bushing 212 covering the surface of the heating tube 215 includes an insulating bushing and a graphite heat-conducting sheet, which not only has excellent insulation performance to prevent the heating tube 215 from leaking electricity and ensure construction safety, but also greatly improves the heat conduction efficiency. In conjunction with the exposed channel 213 on the gain bushing 212 that is opposite to the heating tube 215, the heat conduction can be further enhanced, allowing the heat to be quickly and evenly transferred to the leveling and wear-resistant ironing board 210, avoiding local asphalt overheating or uneven heating. The gain bushing 212 is sized to fit the heating space 214 and is fixed by plug-in screw connection. The protective plate 211 covering the surface of the heating space 214 is screwed onto the gain bushing 212. This not only ensures the stable installation of the heating tube 215 and the gain bushing 212, but also effectively protects the internal heating structure and prevents debris such as asphalt chips and dust from entering the heating space 214 and affecting the heating effect and component life. At the same time, the screw connection method also facilitates disassembly and maintenance in the future. The overall structural design takes into account heating uniformity, operational safety, structural stability and maintenance convenience, and effectively solves the problems of uneven heat conduction, easy interference, poor protection and inconvenient maintenance of traditional heating devices.

[0033] The gain bushing 212 with insulating bushing can form reliable electrical isolation when the heating tube 215 is working, effectively preventing current from being conducted to the folded plate 21 and the leveling wear-resistant iron plate 210, avoiding the risk of electric shock to construction personnel. At the same time, it can fix the position of the heating tube 215, reduce vibration displacement and short circuit risk, and improve the safety and stability of the heating device 2100. The gain bushing 212 with graphite heat-conducting sheet has extremely high thermal conductivity and temperature uniformity, which can quickly and evenly conduct the heat generated by the heating tube 215 to the entire leveling wear-resistant iron plate 210, avoiding local overheating that causes asphalt to age and become brittle. At the same time, it reduces thermal resistance, reduces heat loss, improves heating efficiency, and can also adapt to the structural shape of the heating space 214, achieving efficient heat transfer through close fit.

[0034] The curved handle 300 includes a connecting frame 32 fixed on the main ironing plate 100, and the connecting frame 32 has a semi-circular structure. A fixing seat 31 is rotatably connected to the connecting frame 32, and the fixing seat 31 is fixed to the end of the curved handle 300. An adjustment channel 35 is provided through the side wall of the connecting frame 32, and the adjustment channel 35 has an arc-shaped structure.

[0035] The fixed base 31 has a circular structure, and both sides of the fixed base 31 are provided with adjusting studs 33. The adjusting studs 33 pass through the adjusting channel 35 and are screwed with adjusting nuts 34. The curved handle 300 has a "U" shaped structure, and the use angle of the curved handle 300 is adjusted by adjusting studs 33, adjusting nuts 34, and adjusting channel 35. The adjusting channel 35 and the fixed base 31 have a concentric circle structure.

[0036] like Figure 3-4 As shown: The curved handle 300 rotates and engages with the circular fixed base 31 and the semi-circular connecting frame 32. Combined with the arc-shaped adjustment channel 35, adjustment stud 33, and adjustment nut 34, all concentrically arranged with the fixed base 31, it allows for continuous adjustment and locking of the operating angle. This adapts to different heights, construction postures, and paving angles, improving the comfort and stability of handheld operation. The U-shaped curved handle 300 distributes force evenly and is easy to grip. The concentric design of the adjustment channel 35 and the fixed base 31 ensures smooth and seamless rotation adjustment. The screw-locking method of the adjustment stud 33 and adjustment nut 34 is reliable and secure, preventing the handle from loosening or shifting during operation. The overall structure is simple and easy to adjust, significantly improving the applicability and ease of operation of the paver in different construction scenarios.

[0037] like Figure 2-8 As shown: By setting an S-shaped heating tube 215 in the heating space 214 of the folded plate 21 and cooperating with a gain bushing 212 covered with an insulating bushing and a graphite heat-conducting sheet, heat is evenly conducted to the leveling and wear-resistant ironing plate 210. Combined with the expandable width structural design, the number of times the asphalt pavement is repeatedly ironed is reduced, avoiding the problems of asphalt aging, brittleness and cracking caused by repeated heating. At the same time, it ensures that the pavement is heated evenly and the ironing density is consistent, thereby improving the forming quality and service life of the asphalt pavement.

[0038] Working principle: When the wear-resistant screeding mechanism of this paver is working, the main screed plate 100 serves as the main support. The auxiliary screed plates on both sides and their folding structures 200 rotate around the connecting shaft 28, driving the L-shaped feet 20 and the folding plate 21 to rotate and achieve 0-180 degree unfolding and folding. After unfolding, it is locked by the locking nut 29 and supported by the mounting frame 27. At the same time, the connecting seats A22 and B26 at the ends of the folding plate 21 are respectively connected to the connecting arms A23 and B24, which have an eight-shaped arc structure. The connecting arm B24 is movably connected to the connecting arm A23 via the main shaft 25, and the weight-reducing ports on the connecting arms A23 and B24 can reduce the structural weight, realizing the splicing and extension of the folding plate 21 and the main ironing plate 100. The curved handle 30 is rotatably engaged with the semi-circular connecting frame 32 via the fixed base 31, and the adjusting stud 33 passes through the arc-shaped adjusting channel 35 and is locked with the adjusting nut 34, so that the usage angle can be adjusted to adapt to different usage postures, such as unfolding for flat ironing, and folding to reduce the size for easy storage.

[0039] In the heating device 2100 at the bottom of the main ironing plate 100, the auxiliary ironing plate, and their folding structure 200, the heating space 214 inside the folding plate 21 is equipped with an S-shaped heating tube 215. The surface of the heating tube 215 is covered with a gain bushing 212 containing an insulating bushing and a graphite heat-conducting sheet. The exposed channel 213 on the gain bushing 212 ensures efficient heat conduction. The gain bushing 212 is plugged and screwed into the heating space 214. The protective plate 211 is screwed onto the gain bushing 212 for protection. The anti-interference rounded corners of the bottom leveling and wear-resistant ironing plate 210 prevent structural interference when folded and unfolded. The bottom surface of the leveling and wear-resistant ironing plate 210 is flush with the bottom surface of the mounting frame 27 to ensure a flat and consistent ironing surface. The heat generated by the heating tube 215 is evenly transferred to the leveling and wear-resistant ironing plate 210 through the gain bushing 212. Together with the main ironing plate 100 and the unfolded folding plate 21, they perform heating and ironing operations on the asphalt pavement.

[0040] This device allows for flexible adjustment of the overall working width, solving the problems of fixed working width per operation due to the fixed length of the electric ironing plate, and the need for repeated operations and long construction periods for large-area construction. At the same time, it avoids the repeated heating and aging of local asphalt caused by multiple ironing, resulting in brittleness and cracking. During construction, the folded plate 21 can be unfolded and spliced ​​with the main ironing plate 100 according to the road width to expand the working area and reduce the number of repeated ironing. In addition, the heating device 2100 achieves uniform heat conduction through the S-shaped heating tube 215 and the gain bushing 212, ensuring that the asphalt is heated evenly and preventing local overheating and aging.

Claims

1. A wear-resistant screed mechanism of a paving machine, comprising a main screed (100), characterized in that: The main ironing board (100) is equipped with a curved handle (300), and the main ironing board (100) is provided with a secondary ironing board and its folding structure (200) on both sides. The secondary ironing board and its folding structure (200) include a connecting seat B (26) fixed at the end of the main ironing board (100) and a mounting frame (27). A connecting shaft (28) is inserted through the mounting frame (27). At the same time, the mounting frame (27) is movably connected to an L-shaped foot (20) through the connecting shaft (28). A folding plate (21) is fixed at the end of the L-shaped foot (20), and the connecting shaft (28) passes through the L-shaped foot (20) and is screwed with a locking nut (29).

2. A wear resistant screed for a paving machine as defined in claim 1, characterized in that: The end of the folding plate (21) is fixed with a connecting seat A (22), and a connecting arm A (23) is rotatably connected to the connecting seat A (22). A connecting arm B (24) is rotatably connected to the connecting seat B (26), and both the connecting arm B (24) and the connecting arm A (23) are in the shape of an "eight".

3. The wear-resistant screeding mechanism of a paver according to claim 2, characterized in that: Both connecting arm B (24) and connecting arm A (23) are arc-shaped structures, and both connecting arm B (24) and connecting arm A (23) are provided with weight reduction openings. The end of connecting arm B (24) is provided with a main shaft (25), and connecting arm B (24) is movably connected to connecting arm A (23) through the main shaft (25) at the end.

4. A wear resistant screed mechanism for a paving machine as defined in claim 2, wherein: The folding plate (21) rotates around the connecting shaft (28) via connecting arm B (24) and connecting arm A (23), and the folding angle of the folding plate (21) is 0-180 degrees. The folding plate (21) is in the unfolded state and is locked by the connecting shaft (28) and locking nut (29). The folding plate (21) is in the unfolded state and is supported by the mounting frame (27).

5. The wear-resistant screeding mechanism of a paver according to claim 1, characterized in that: The main ironing board (100) and the auxiliary ironing board and their folding structure (200) are both equipped with heating devices (2100) at the bottom. The heating device (2100) includes a leveling and wear-resistant ironing board (210) installed at the bottom of the folding board (21). The leveling and wear-resistant ironing board (210) has an anti-interference rounded corner on the top side of the side close to the mounting frame (27). The bottom surface of the leveling and wear-resistant ironing board (210) is flush with the bottom surface of the mounting frame (27).

6. A wear resistant screed for a paving machine as defined in claim 1, wherein: The folded plate (21) has a heating space (214) inside, and a heating tube (215) is provided in the heating space (214). The heating tube (215) has an "S" shaped structure, and the surface of the heating tube (215) is covered with a gain bushing (212). The gain bushing (212) includes, but is not limited to, an insulating bushing and a graphite heat-conducting sheet.

7. The wear-resistant screeding mechanism of a paver according to claim 6, characterized in that: The gain bushing (212) has an exposed channel (213) and is positioned opposite to the heating tube (215). The gain bushing (212) is adapted to the size of the heating space (214) and is inserted into the heating space (214) and screwed in. The surface of the heating space (214) is also covered with a protective plate (211) and screwed onto the gain bushing (212).

8. A wear resistant screed for a paving machine as defined in claim 1, wherein: The curved handle (300) includes a connecting frame (32) fixed on the main ironing plate (100), and the connecting frame (32) has a semi-circular structure. A fixing seat (31) is rotatably connected to the connecting frame (32), and the fixing seat (31) is fixed to the end of the curved handle (300). An adjustment channel (35) is provided through the side wall of the connecting frame (32), and the adjustment channel (35) has an arc-shaped structure.

9. A wear resistant screed for a paving machine as defined in claim 8, wherein: The fixed base (31) has a circular structure, and both sides of the fixed base (31) are provided with adjusting studs (33). The adjusting studs (33) pass through the adjusting channel (35) and are screwed with adjusting nuts (34). The curved handle (300) has a "U" shaped structure, and the use angle of the curved handle (300) is adjusted by adjusting studs (33), adjusting nuts (34), and adjusting channel (35). The adjusting channel (35) and the fixed base (31) have a concentric circle structure.

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