Screed plate mechanism and paver

Abstract

The utility model provides a screed plate mechanism and a paver, which are characterized in that a first telescopic screed plate and a second telescopic screed plate are respectively connected to two sides of a basic connecting frame of a basic screed plate through a first telescopic connecting frame and a second telescopic connecting frame; the first telescopic connecting frame and the second telescopic connecting frame can transversely move relative to the basic screed plate through stretching and retracting, so that when the first telescopic connecting frame and the second telescopic connecting frame completely retract, the first telescopic screed plate can completely retract to the position right behind the basic screed plate; the second telescopic ironing plate can be completely contracted to the right rear part of the first telescopic ironing plate; along with the extension of the first telescopic connecting frame and the second telescopic connecting frame, the ratio of the ironing length of the ironing plate mechanism to the length of the basic ironing plate reaches a preset value, so that a larger ironing width of the ironing plate mechanism is realized. The structure is simple, rapid transition can be achieved during site construction, and repeated disassembly and assembly work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pavers, in particular to an ironing board mechanism and a pavers. Background Art

[0002] A paver is a heavy equipment commonly used in road construction, used to evenly lay asphalt mixture on the road. Generally speaking, the paving range of different types of pavers is between 2.5 meters and 12 meters. Among them, 5 meters to 9 meters is the paving width range with the highest market share. Pavers of different paving widths are also suitable for different roads. Wide-width pavers are suitable for the construction of large-area homogeneous concrete or asphalt roads such as highways and airport runways, and their paving width is usually more than 9 meters; small pavers are suitable for small-area construction such as community roads and small parking lots, and their paving width is usually less than 3 meters. In addition, most of the market demand for medium-width 5 meters to 9 meters is concentrated here. For the width of medium-width pavers, the most common is to hydraulically extend from the basic width to twice the basic width, and the mainstream working width is 5 meters to 6 meters. For larger paving needs, on-site mechanical assembly is required. The screed plate includes a basic section screed plate and left and right telescopic section screed plates that are arranged on the same side at the front or rear side of the basic section screed plate and can be horizontally extended relative to the basic section screed plate. During the assembly process, the main tasks include disassembly of the side baffles, assembly and adjustment of the mechanical assembly sections, etc.

[0003] The mainstream ironing plate on the market is a symmetrical telescopic ironing plate, including a fixed basic ironing plate, a movable telescopic ironing plate, and a guide device for guiding the sliding of the telescopic ironing plate, and its maximum working width does not exceed twice the basic ironing plate. The hydraulic telescopic ironing plate that can reach three times the basic working width when fully extended can well solve the above-mentioned problems of frequent disassembly and transfer. For example, the Chinese invention patent with publication number CN112482149A discloses a telescopic ironing plate and a paving machine, which adopts a symmetrically arranged ironing plate and a three-layer hydraulic telescopic mechanism that is symmetrical in structure. When the ironing plate is extended and retracted, the first-level hydraulic telescopic mechanism and the second-level hydraulic telescopic mechanism are respectively extended and retracted at the same time or successively at the left-right symmetrical position of the basic ironing plate to achieve the required paving operation width. This solution realizes the paving operation of three times the width in terms of function, but it is relatively complicated in use because two new second-level hydraulic telescopic mechanisms are added to the ironing plate mechanism components, and the adjustment amount is increased when the parameters such as the ironing plate height need to be adjusted. When the working width of on-site paving changes, in order to ensure the paving speed and quality, the adjustment of the width of the mechanically assembled ironing plate has certain limitations and is time-consuming and labor-intensive. In addition, the ironing plate needs to be disassembled and reassembled many times during the vehicle transfer process. Frequent disassembly and assembly can easily lead to the accumulation of assembly errors, loss or damage of assembly parts, and the ironing plate needs to be adjusted on-site after assembly, which not only delays time but also affects work efficiency. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a screed mechanism and a paver, so as to solve the problem that when the working width of the screed is adjusted within a set width range, the structure of the screed is relatively complex and the mechanical assembly structure of the screed cannot achieve its rapid disassembly and adjustment.

[0005] The embodiment of the utility model adopts the following technical solution: an ironing plate mechanism, comprising:

[0006] A basic ironing plate, on which a basic connecting frame is arranged, and the basic ironing plate has a first ironing length;

[0007] a first telescopic ironing plate connected to one side of the basic connecting frame through a first telescopic connecting frame, and the first telescopic ironing plate can be laterally moved relative to the basic ironing plate by the extension and retraction of the first telescopic connecting frame, so that when the first telescopic connecting frame is fully retracted, the first telescopic ironing plate can be fully retracted to the rear of the basic ironing plate;

[0008] a second telescopic screed plate connected to the other side of the basic connecting frame via a second telescopic connecting frame, wherein the second telescopic screed plate can be laterally moved relative to the basic screed plate by the extension and retraction of the second telescopic connecting frame, so that when the second telescopic connecting frame is fully retracted, the second telescopic screed plate can be fully retracted to the rear of the first telescopic screed plate;

[0009] As the first telescopic connecting frame and the second telescopic connecting frame extend, the ratio of the ironing length of the ironing plate mechanism to the first ironing length reaches a preset value.

[0010] In some embodiments, the basic connecting frame includes a first basic connecting frame and a second basic connecting frame, and the first basic connecting frame is located above the basic ironing board;

[0011] One end of the first basic connecting frame is hinged to one end of the second basic connecting frame.

[0012] In some embodiments, the first telescopic connecting frame is a four-rod support mechanism, including a first support assembly and a second support assembly;

[0013] The first support assembly and the second support assembly respectively include two parallel guide support shafts and a support sleeve;

[0014] The two guide support shafts of the first support assembly are connected to a side of the first basic connecting frame away from the second basic connecting frame through a support sleeve, so that the first support assembly can move axially along the support sleeve to achieve lateral movement of the first support assembly relative to the basic ironing plate;

[0015] The second support assembly is connected to the first support assembly and is located below the first support assembly; the two guide support shafts of the second support assembly are connected to one side of the first support assembly through a support sleeve, so that the second support assembly can move along the axial direction of the support sleeve to achieve lateral movement of the second support assembly relative to the first support assembly;

[0016] Wherein, the support sleeve is sleeved on the guide support shaft so that the guide support shaft can slide relative to the support sleeve, and the support sleeve is coaxially arranged with the guide support shaft.

[0017] In some embodiments, the guide support shaft and the support sleeve in the first support assembly are respectively a first guide support shaft and a first support sleeve, and the first support sleeve includes four;

[0018] The first support assembly further comprises a first support frame, and a first support plate is respectively arranged at both ends of the first support frame, and the two first support plates are respectively arranged at both ends of the two first guide support shafts; two first support sleeves are respectively arranged on the two first guide support shafts, so that the two first guide support shafts can move axially along the first support sleeves, so as to realize the lateral movement of the two first guide support shafts relative to the basic ironing plate;

[0019] The guide support shaft and the support sleeve in the second support assembly are respectively a second guide support shaft and a second support sleeve, and the second support sleeve includes four;

[0020] The second support assembly also includes two second support plates, which are respectively arranged at both ends of the two second guide support shafts; two second support sleeves are respectively arranged on the two second guide support shafts, so that the two second guide support shafts can move axially along the second support sleeves to realize the lateral movement of the two second guide support shafts relative to the basic ironing plate.

[0021] In some embodiments, the second telescopic connecting frame is a four-rod support mechanism, including a third support assembly and a fourth support assembly;

[0022] The third support assembly and the fourth support assembly respectively include two parallel guide support shafts and a support sleeve;

[0023] The two guide support shafts of the third support assembly are connected to a side of the second basic connection frame away from the first basic connection frame through a support sleeve, so that the third support assembly can move axially along the support sleeve to achieve lateral movement of the third support assembly relative to the basic ironing plate;

[0024] The fourth support assembly is connected to the third support assembly and is located below the third support assembly; the two guide support shafts of the fourth support assembly are connected to one side of the third support assembly through a support sleeve, so that the fourth support assembly can move along the axial direction of the support sleeve to achieve lateral movement of the fourth support assembly relative to the third support assembly;

[0025] Wherein, the support sleeve is slidably mounted on the guide support shaft, and the support sleeve is coaxially arranged with the guide support shaft.

[0026] In some embodiments, the guide support shaft and the support sleeve in the third support assembly are respectively a third guide support shaft and a third support sleeve, and the third support sleeve includes four;

[0027] The third support assembly further comprises a second support frame, and a third support plate is respectively arranged at both ends of the second support frame, and the two third support plates are respectively arranged at both ends of the two third guide support shafts; two third support sleeves are respectively arranged on the two third guide support shafts, so that the two third guide support shafts can move axially along the third support sleeves, so as to realize the lateral movement of the two third guide support shafts relative to the basic ironing plate;

[0028] The guide support shaft and the support sleeve in the fourth support assembly are respectively a fourth guide support shaft and a fourth support sleeve, and the fourth support sleeve includes four;

[0029] The fourth support assembly also includes two fourth support plates, which are respectively arranged at both ends of the two fourth guide support shafts; two fourth support sleeves are respectively arranged on the two fourth guide support shafts, so that the two fourth guide support shafts can move axially along the fourth support sleeves to realize lateral movement of the two fourth guide support shafts relative to the basic ironing plate.

[0030] An embodiment of the present application also provides a paving machine, comprising a screed mechanism as described in any of the above embodiments.

[0031] In some embodiments, the paving machine further includes a driving mechanism, which is respectively connected to the first telescopic connecting frame and the second telescopic connecting frame in the ironing plate mechanism to provide telescopic power for the first telescopic connecting frame and the second telescopic connecting frame.

[0032] The beneficial effects of the embodiments of the utility model are:

[0033] The screed mechanism is provided with a first telescopic screed and a second telescopic screed that can be laterally moved relative to the basic screed on both sides of the basic screed, and the first telescopic screed and the second telescopic screed can form a three-layer front-to-back structure parallel to each other with the basic screed, so that when the first telescopic connecting frame and the second telescopic connecting frame are extended, the ratio of the screed length of the screed mechanism to the first screed length can reach a preset value. In addition, the screed mechanism is more concise in overall structure, can be quickly transferred during on-site construction, and reduces frequent and repeated disassembly and assembly work. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 It is a three-dimensional structural schematic diagram of the ironing plate mechanism of the present application, wherein the first retractable ironing plate and the second retractable ironing plate are both fully extended;

[0036] Figure 2 A schematic side view of the screed mechanism of the present application;

[0037] Figure 3 It is a three-dimensional structural schematic diagram of the ironing plate mechanism of the present application, wherein the first telescopic ironing plate and the second telescopic ironing plate are both fully retracted;

[0038] Figure 4 is another three-dimensional structural schematic diagram of the ironing plate mechanism of the present application, wherein the first retractable ironing plate and the second retractable ironing plate are both fully retracted;

[0039] Figure 5 A top view of the screed mechanism when the first retractable screed and the second retractable screed are fully extended;

[0040] Figure 6 This is a schematic diagram of the three-dimensional structure of the first telescopic connecting frame of the present application;

[0041] Figure 7 This is another three-dimensional structural schematic diagram of the first telescopic connecting frame of the present application;

[0042] Figure 8 is a schematic diagram of the three-dimensional structure of the ironing plate mechanism when both the first retractable ironing plate and the second retractable ironing plate are not fully extended;

[0043] Fig. 9 It is another three-dimensional structural schematic diagram of the ironing plate mechanism when the first telescopic ironing plate and the second telescopic ironing plate are not fully extended.

[0044] Figure numerals: 1. basic ironing plate; 2. first telescopic ironing plate; 3. second telescopic ironing plate; 4. first telescopic connecting frame; 401. first supporting assembly; 4011. first supporting frame; 4012. first supporting plate; 402. second supporting assembly; 4021. second supporting plate; 5. second telescopic connecting frame; 501. third supporting assembly; 502. fourth supporting assembly; 6. first basic connecting frame; 7. second basic connecting frame; 8. guide support shaft; 9. support sleeve. DETAILED DESCRIPTION

[0045] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0046] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present utility model will occur to those skilled in the art.

[0047] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0048] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0049] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art will be able to surely implement many other equivalent forms of the present invention.

[0050] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0051] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0052] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0053] In order to solve the problems in the background technology, the utility model provides an ironing plate mechanism, such as Figure 1 As shown, the screed mechanism comprises a basic screed 1 , a first telescopic screed 2 and a second telescopic screed 3 .

[0054] The first telescopic screed plate 2 and the second telescopic screed plate 3 are respectively arranged on both sides of the basic screed plate 1 with the basic screed plate 1 as the installation basis. The first telescopic screed plate 2 and the second telescopic screed plate 3 can move relative to the basic screed plate 1. During the movement of the first telescopic screed plate 2 and the second telescopic screed plate 3 relative to the basic screed plate 1, the basic screed plate 1 can remain stationary, thereby realizing the adjustment of the ironing width of the entire screed plate mechanism.

[0055] The basic screed plate 1 may be a rectangular plate having a certain length and width, and the specific size may be set according to the width of the road section to be screed and actual production needs. The length of the basic screed plate 1 is used as its screed length, that is, the longer the length of the basic screed plate 1 is, the greater the corresponding screed length is. When screeding the road surface, the basic screed plate 1 is generally placed so that the length direction corresponds to the width direction of the road surface.

[0056] Specifically, a basic connecting frame is provided on the basic ironing plate 1, and the basic ironing plate 1 has a first ironing length. The basic ironing plate 1 is connected to the first telescopic ironing plate 2 and the second telescopic ironing plate 3 through the basic connecting frame.

[0057] Combination Figure 2 , Figure 3 and Figure 4 , the first telescopic screed plate 2 is connected to one side of the basic connecting frame through the first telescopic connecting frame 4, and the first telescopic screed plate 2 can move laterally (in the length direction of the basic screed plate 1) relative to the basic screed plate 1 through the extension and retraction of the first telescopic connecting frame 4, so that when the first telescopic connecting frame 4 is fully retracted, the first telescopic screed plate 2 can be fully retracted to the rear of the basic screed plate 1. That is, the first telescopic screed plate 2 is parallel to the basic screed plate 1, and the first telescopic screed plate 2 is located on the side of the basic screed plate 1 away from the road surface to be ironed.

[0058] Continue to combine Figure 2 , Figure 3 and Figure 4 , the second telescopic screed plate 3 is connected to the other side of the basic connecting frame through the second telescopic connecting frame 5, and the second telescopic screed plate 3 can move laterally (in the length direction of the basic screed plate 1) relative to the basic screed plate 1 through the extension and retraction of the second telescopic connecting frame 5, so that when the second telescopic connecting frame 5 is fully retracted, the second telescopic screed plate 3 can be fully retracted to the rear of the first telescopic screed plate 2. That is, the second telescopic screed plate 3 is parallel to the basic screed plate 1 and the first telescopic screed plate 2, and the second telescopic screed plate 3 is located on the side of the basic screed plate 1 away from the road surface to be ironed, and the first telescopic screed plate 2 is provided between the second telescopic screed plate 3 and the basic screed plate 1.

[0059] As the first telescopic connecting frame 4 and the second telescopic connecting frame 5 are extended, the ratio of the ironing length of the ironing plate mechanism to the first ironing length reaches a preset value. When the first telescopic connecting frame 4 or the second telescopic connecting frame 5 is fully extended, the ratio of the ironing length of the ironing plate mechanism to the first ironing length is 2, and when both the first telescopic connecting frame 4 and the second telescopic connecting frame 5 are fully extended, the ratio of the ironing length of the ironing plate mechanism to the first ironing length is 3. For example, when the first telescopic connecting frame (or the second telescopic connecting frame 5) is fully extended, the first telescopic ironing plate 2 (or the second telescopic ironing plate 3) can be used to iron the road surface to be ironed, and at this time, the ratio of the ironing length of the ironing plate mechanism to the first ironing length reaches 2. The lengths of the first telescopic ironing plate 2 and the second telescopic ironing plate 3 are both the same as the first ironing length. When the first telescopic connecting frame 4 and the second telescopic connecting frame 5 are fully extended, the first telescopic ironing plate 2 and the second telescopic ironing plate 3 can both be used to iron the road surface to be ironed, and at this time, the ratio of the ironing length of the ironing plate mechanism to the first ironing length reaches 3. Of course, it is understandable that the lengths of the first telescopic ironing plate 2 and the second telescopic ironing plate 3 may also be set to other lengths, which is only used as an example and does not constitute a limitation on the protection scope of the claims.

[0060] The screed mechanism is provided with a first telescopic screed plate 2 and a second telescopic screed plate 3 which can be laterally moved relative to the basic screed plate 1 on both sides thereof, and the first telescopic screed plate 2 and the second telescopic screed plate 3 can form a three-layer front-to-back structure parallel to each other with the basic screed plate 1, so that when the first telescopic connecting frame 4 and the second telescopic connecting frame 5 are extended, the ratio of the screed length of the screed mechanism to the first screed length can reach a preset value. In addition, the screed mechanism is more concise in overall structure, can be quickly transferred during on-site construction, and reduces frequent and repeated disassembly and assembly work.

[0061] In some embodiments, in combination Figure 1 and Figure 5 The basic connecting frame includes a first basic connecting frame 6 and a second basic connecting frame 7. The first basic connecting frame 6 is located above the basic screed plate 1. The lower part of the basic connecting frame has a storage space for the first telescopic screed plate 2 and the second telescopic screed plate 3 to be retracted to the rear of the basic screed plate 1.

[0062] One end of the first basic connecting frame 6 is hinged to one end of the second basic connecting frame 7, so that a storage space can be formed below the first basic connecting frame 6 and the second basic connecting frame 7 for the first telescopic ironing plate 2 and the second telescopic ironing plate 3 to be retracted to the rear of the basic ironing plate 1, and the first telescopic ironing plate 2 and the second telescopic ironing plate 3 can be stored in the storage space at the same time in a parallel position relationship without interfering with each other.

[0063] In some embodiments, the Figure 1 and Figure 5 The first telescopic connecting frame 4 is a four-rod support mechanism, including a first support assembly 401 and a second support assembly 402.

[0064] Specific, combined Figure 6 and Figure 7 , the first support assembly 401 and the second support assembly 402 respectively include two parallel guide support shafts 8 and support sleeves 9. The two parallel guide support shafts 8 can be located in the same horizontal plane. The two guide support shafts 8 of the first support assembly 401 are hinged to the side of the first basic connecting frame 6 away from the second basic connecting frame 7 through the support sleeve 9, so that the first support assembly 401 can move along the axial direction of the support sleeve 9 to achieve the lateral movement of the first support assembly 401 relative to the basic ironing plate 1. This structure makes the distance between the front and rear guide support shafts 8 of the ironing plate mechanism in the direction of travel of the paver larger, so that the first support assembly 401 and the second support assembly 402 have higher structural rigidity. When the ironing plate mechanism performs an ironing operation on the road surface to overcome the friction force of the paving material in the opposite direction, there is enough spacing between the two front and rear guide support shafts 8 to resist the force in the direction of travel of the paver, so as to avoid the deformation of the ironing plate mechanism caused by the force and affect the ironing effect of the ironing plate mechanism.

[0065] The second support assembly 402 is connected to the first support assembly 401, and the second support assembly 402 is located below the first support assembly 401. The two guide support shafts 8 of the second support assembly 402 are connected to one side of the first support assembly 401 through the support sleeve 9, so that the second support assembly 402 can move along the axial direction of the support sleeve 9 to achieve the lateral movement of the second support assembly 402 relative to the first support assembly 401. The second support assembly 402 and the first support assembly 401 arranged up and down make it possible for the paving machine to have a guide support shaft 8 with a large enough cross-sectional area on the screed mechanism to cope with the bending deformation in the direction of gravity under the action of the self-weight of the screed mechanism when the paving machine is in the non-paving state, and the four-rod guide support shafts 8 arranged up and down in the second support assembly 402 and the first support assembly 401 have appropriate spacing between each other, so that the screed can have a good supporting effect in the direction of gravity when the screed is subjected to the self-weight of the screed to ensure the normal state of the first telescopic screed 2.

[0066] The support sleeve 9 is sleeved on the guide support shaft 8 so that the guide support shaft 8 can slide relative to the support sleeve 9 , and the support sleeve 9 and the guide support shaft 8 are coaxially arranged.

[0067] In some embodiments, the guide support shaft 8 and the support sleeve 9 in the first support assembly 401 are respectively the first guide support shaft and the first support sleeve, and the first support sleeve includes four.

[0068] The first support assembly 401 further includes a first support frame 4011, and a first support plate 4012 is respectively disposed at both ends of the first support frame 4011, and two first support plates 4012 are respectively disposed at both ends of two first guide support shafts. Two first support sleeves are respectively disposed on the two first guide support shafts, so that the two first guide support shafts can move along the axial direction of the first support sleeves to achieve lateral movement of the two first guide support shafts relative to the basic ironing plate 1. When the first support assembly 401 moves laterally relative to the basic connecting frame, the first telescopic ironing plate 2 can achieve a first-level contraction relative to the basic ironing plate 1.

[0069] Similarly, the guide support shaft 8 and the support sleeve 9 in the second support assembly 402 are respectively the second guide support shaft and the second support sleeve, and the second support sleeve includes four. The second support assembly 402 also includes two second support plates 4021, and the two second support plates 4021 are respectively arranged at the two ends of the two second guide support shafts. Two second support sleeves are respectively arranged on the two second guide support shafts, so that the two second guide support shafts can move along the axial direction of the second support sleeves, so as to realize the lateral movement of the two second guide support shafts relative to the basic ironing plate 1. The structure of the second support assembly 402 is similar to that of the first support assembly 401, and the working principle is also similar. When it moves laterally relative to the basic connecting frame, it can realize the secondary contraction of the first telescopic ironing plate 2 relative to the basic ironing plate 1. Among them, when the first telescopic ironing plate 2 needs to be stored to the rear of the basic ironing plate 1, combined with Figure 8 and Fig. 9 The primary contraction and the secondary contraction may be performed simultaneously, or the primary contraction may be performed first and then the secondary contraction, or the secondary contraction may be performed first and then the primary contraction.

[0070] In some embodiments, the second telescopic connecting frame 5 is substantially the same in structure as the first telescopic connecting frame 4 except that it is installed at a different location from the first telescopic connecting frame 4. Specifically, the second telescopic connecting frame 5 is a four-bar support mechanism, including a third support assembly 501 and a fourth support assembly 502. The third support assembly 501 and the fourth support assembly 502 include two parallel guide support shafts 8 and a support sleeve 9. The two guide support shafts 8 of the third support assembly 501 are connected to a side of the second basic connecting frame 7 away from the first basic connecting frame 6 through the support sleeve 9, so that the third support assembly 501 can move along the axial direction of the support sleeve 9 to achieve the lateral movement of the third support assembly 501 relative to the basic ironing board 1. The effect of this structure has been discussed in the first telescopic connecting frame 4, and will not be repeated here.

[0071] The fourth support assembly 502 is connected to the third support assembly 501 and is located below the third support assembly 501. The two guide support shafts 8 of the fourth support assembly 502 are connected to one side of the third support assembly 501 through the support sleeve 9, so that the fourth support assembly 502 can move along the axial direction of the support sleeve 9 to achieve the lateral movement of the fourth support assembly 502 relative to the third support assembly 501. Similarly, the effect of this structure has been discussed in the first telescopic connecting frame 4, and will not be repeated here.

[0072] The support sleeve 9 is sleeved on the guide support shaft 8 so that the guide support shaft 8 can slide relative to the support sleeve 9 , and the support sleeve 9 and the guide support shaft 8 are coaxially arranged.

[0073] In some embodiments, the guide support shaft 8 and the support sleeve 9 in the third support assembly 501 are respectively the third guide support shaft and the third support sleeve, and the third support sleeve includes four. The third support assembly 501 also includes a second support frame, and a third support plate is respectively provided at both ends of the second support frame, and the two third support plates are respectively provided at both ends of the two third guide support shafts. Two third support sleeves are respectively provided on the two third guide support shafts, so that the two third guide support shafts can move along the axial direction of the third support sleeves to achieve the lateral movement of the two third guide support shafts relative to the basic ironing plate 1. When the third support assembly 501 moves laterally relative to the basic connecting frame, the first-level contraction of the second telescopic ironing plate 3 relative to the basic ironing plate 1 can be achieved.

[0074] The guide support shaft 8 and the support sleeve 9 in the fourth support assembly 502 are respectively the fourth guide support shaft and the fourth support sleeve, and the fourth support sleeve includes four.

[0075] The fourth support assembly 502 further includes two fourth support plates, which are respectively arranged at the two ends of the two fourth guide support shafts. Two fourth support sleeves are respectively arranged on the two fourth guide support shafts, so that the two fourth guide support shafts can move along the axial direction of the fourth support sleeves, so as to realize the lateral movement of the two fourth guide support shafts relative to the basic ironing plate 1. The structure of the fourth support assembly 502 is similar to that of the second support assembly 402, and the working principle is also similar. When it moves laterally relative to the basic connecting frame, it can realize the secondary contraction of the second telescopic ironing plate 3 relative to the basic ironing plate 1. Among them, when the second telescopic ironing plate 3 needs to be stored to the rear of the basic ironing plate 1, the primary contraction and the secondary contraction can be contracted simultaneously, or the primary contraction can be performed first and then the secondary contraction, or the secondary contraction can be performed first and then the primary contraction.

[0076] Furthermore, the ironing plate mechanism can perform an ironing operation on the road surface with an ironing length that is three times the first ironing length, thereby improving the ironing efficiency of the ironing plate mechanism on the road surface.

[0077] An embodiment of the present application also provides a paving machine, comprising a screed mechanism as described in any of the above embodiments.

[0078] In some embodiments, the paving machine also includes a driving mechanism (not shown in the figure), which is respectively connected to the first telescopic connecting frame 4 and the second telescopic connecting frame 5 in the ironing plate mechanism to provide telescopic power for the first telescopic connecting frame 4 and the second telescopic connecting frame 5.

[0079] The paver adopting the above-mentioned screed mechanism is simpler in structure and can be quickly transferred during on-site construction, reducing frequent and repeated disassembly and assembly work. In addition, when the paver is in a non-paving state, under the action of the screed mechanism's own gravity, the paver has a guide support shaft 8 with a large enough cross-sectional area to cope with bending deformation in the direction of gravity. In addition, when the paver is subjected to a force in the direction of travel of the paver, the distance between its front and rear guide support shafts 8 is large, so that the paver has a higher structural rigidity. When overcoming the friction force in the opposite direction of the paving material, there is enough spacing between the front and rear guide support shafts 8 to resist the force in the direction of travel of the paver, resulting in less deformation during the paving operation and more stable performance.

[0080] Multiple embodiments of the present application are described in detail above, but the present application is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concept of the present application, and these variations and modifications should all fall within the scope of protection required by the present application.

Claims

1. A screed mechanism, characterized in that: include: A basic ironing plate, on which a basic connecting frame is arranged, and the basic ironing plate has a first ironing length; a first telescopic ironing plate connected to one side of the basic connecting frame through a first telescopic connecting frame, and the first telescopic ironing plate can be laterally moved relative to the basic ironing plate by the extension and retraction of the first telescopic connecting frame, so that when the first telescopic connecting frame is fully retracted, the first telescopic ironing plate can be fully retracted to the rear of the basic ironing plate; a second telescopic screed plate connected to the other side of the basic connecting frame via a second telescopic connecting frame, wherein the second telescopic screed plate can be laterally moved relative to the basic screed plate by the extension and retraction of the second telescopic connecting frame, so that when the second telescopic connecting frame is fully retracted, the second telescopic screed plate can be fully retracted to the rear of the first telescopic screed plate; As the first telescopic connecting frame and the second telescopic connecting frame extend, the ratio of the ironing length of the ironing plate mechanism to the first ironing length reaches a preset value.

2. The ironing plate mechanism according to claim 1, characterized in that: The basic connecting frame comprises a first basic connecting frame and a second basic connecting frame, wherein the first basic connecting frame is located above the basic ironing plate; One end of the first basic connecting frame is hinged to one end of the second basic connecting frame.

3. The ironing plate mechanism according to claim 2, characterized in that: The first telescopic connecting frame is a four-rod support mechanism, including a first support assembly and a second support assembly; The first support assembly and the second support assembly respectively include two parallel guide support shafts and a support sleeve; The two guide support shafts of the first support assembly are connected to a side of the first basic connecting frame away from the second basic connecting frame through a support sleeve, so that the first support assembly can move axially along the support sleeve to achieve lateral movement of the first support assembly relative to the basic ironing plate; The second support assembly is connected to the first support assembly and is located below the first support assembly; the two guide support shafts of the second support assembly are connected to one side of the first support assembly through a support sleeve, so that the second support assembly can move along the axial direction of the support sleeve to achieve lateral movement of the second support assembly relative to the first support assembly; Wherein, the support sleeve is sleeved on the guide support shaft so that the guide support shaft can slide relative to the support sleeve, and the support sleeve is coaxially arranged with the guide support shaft.

4. The ironing plate mechanism according to claim 3, characterized in that: The guide support shaft and the support sleeve in the first support assembly are respectively the first guide support shaft and the first support sleeve, and the first support sleeve includes four; The first support assembly further comprises a first support frame, and a first support plate is respectively arranged at both ends of the first support frame, and the two first support plates are respectively arranged at both ends of the two first guide support shafts; two first support sleeves are respectively arranged on the two first guide support shafts, so that the two first guide support shafts can move axially along the first support sleeves, so as to realize the lateral movement of the two first guide support shafts relative to the basic ironing plate; The guide support shaft and the support sleeve in the second support assembly are respectively a second guide support shaft and a second support sleeve, and the second support sleeve includes four; The second support assembly also includes two second support plates, which are respectively arranged at both ends of the two second guide support shafts; two second support sleeves are respectively arranged on the two second guide support shafts, so that the two second guide support shafts can move axially along the second support sleeves to realize the lateral movement of the two second guide support shafts relative to the basic ironing plate.

5. The ironing plate mechanism according to claim 2, characterized in that: The second telescopic connecting frame is a four-rod support mechanism, including a third support assembly and a fourth support assembly; The third support assembly and the fourth support assembly respectively include two parallel guide support shafts and a support sleeve; The two guide support shafts of the third support assembly are connected to a side of the second basic connection frame away from the first basic connection frame through a support sleeve, so that the third support assembly can move axially along the support sleeve to achieve lateral movement of the third support assembly relative to the basic ironing plate; The fourth support assembly is connected to the third support assembly and is located below the third support assembly; the two guide support shafts of the fourth support assembly are connected to one side of the third support assembly through a support sleeve, so that the fourth support assembly can move along the axial direction of the support sleeve to achieve lateral movement of the fourth support assembly relative to the third support assembly; Wherein, the support sleeve is sleeved on the guide support shaft so that the guide support shaft can slide relative to the support sleeve, and the support sleeve is coaxially arranged with the guide support shaft.

6. The ironing plate mechanism according to claim 5, characterized in that: The guide support shaft and the support sleeve in the third support assembly are respectively a third guide support shaft and a third support sleeve, and the third support sleeve includes four; The third support assembly further comprises a second support frame, and a third support plate is respectively arranged at both ends of the second support frame, and the two third support plates are respectively arranged at both ends of the two third guide support shafts; two third support sleeves are respectively arranged on the two third guide support shafts, so that the two third guide support shafts can move axially along the third support sleeves, so as to realize the lateral movement of the two third guide support shafts relative to the basic ironing plate; The guide support shaft and the support sleeve in the fourth support assembly are respectively a fourth guide support shaft and a fourth support sleeve, and the fourth support sleeve includes four; The fourth support assembly also includes two fourth support plates, which are respectively arranged at both ends of the two fourth guide support shafts; two fourth support sleeves are respectively arranged on the two fourth guide support shafts, so that the two fourth guide support shafts can move axially along the fourth support sleeves to realize lateral movement of the two fourth guide support shafts relative to the basic ironing plate.

7. A paver, characterized in that: The invention comprises the ironing board mechanism as claimed in any one of claims 1 to 6.

8. The paving machine according to claim 7, characterized in that: The paving machine further includes a driving mechanism, which is respectively connected to the first telescopic connecting frame and the second telescopic connecting frame in the screed mechanism to provide telescopic power for the first telescopic connecting frame and the second telescopic connecting frame.

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