Adjusting mechanism, screed plate and paver
By adopting a triangular adjustment mechanism in the paver, the problems of unstable adjustment of the height difference and elevation angle of the screed expansion section were solved, achieving high rigidity and precise adjustment, and improving the consistency of paving thickness and road surface forming effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN SANY ZHONGYI MASCH CO LTD
- Filing Date
- 2026-01-27
- Publication Date
- 2026-04-21
AI Technical Summary
In pavers, the height difference and elevation angle adjustment mechanism of the screed expansion joint is unstable and has low rigidity, resulting in large deformation of the expansion joint, which affects the consistency of the paving thickness and the road surface forming effect.
The adjustment mechanism, employing a triangular structure, enhances rigidity and reduces deformation through the design of the first link, second link, and adjustment link assembly. The coordinated operation of the height difference adjustment component and the elevation angle adjustment component ensures the accuracy of the height difference and elevation angle adjustment of the ironing board.
It improves the consistency of paving thickness and road surface shaping effect, enhances the stability and flexibility of the adjustment mechanism, reduces construction errors, and improves construction quality and efficiency.
Smart Images
Figure CN121896880A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of pavers, and more specifically to an adjustment mechanism, a screed, and a paver. Background Technology
[0002] Currently, in pavers, the adjustment mechanisms for the height difference and elevation angle of the screed's expansion joint are often subject to unstable forces and have low rigidity. This can cause elastic deformation of the adjustment mechanism, resulting in significant deformation of the expansion joint and reducing construction quality. Summary of the Invention
[0003] In view of this, the present disclosure provides an adjustment mechanism that improves the rigidity of the adjustment mechanism and reduces its deformation, thereby improving the consistency of the paving thickness and the road surface forming effect.
[0004] This disclosure also provides an ironing board, including the aforementioned adjustment mechanism.
[0005] This disclosure also provides a paver, including the screed described above.
[0006] According to the adjustment mechanism of this disclosure embodiment, the ironing board includes an upper telescopic box and a lower telescopic box. The adjustment mechanism is used to adjust the height difference and elevation angle of the lower telescopic box. The adjustment mechanism includes: a height difference adjustment component, which includes: a first connecting rod, the two ends of the first connecting rod along its length are a first end and a second end, the first end being rotatably connected to the upper telescopic box and the second end being rotatably connected to the lower telescopic box; a second connecting rod, the second connecting rod being located below the first connecting rod, the two ends of the second connecting rod along its length are a third end and a fourth end, the third end being rotatably connected to the upper telescopic box and the fourth end being rotatably connected to the lower telescopic box; and an adjustment connecting rod assembly, the two ends of the adjustment connecting rod assembly along its length are a fifth end and a sixth end, the fifth end being rotatably connected to the first end and the sixth end being rotatably connected to the fourth end, and the length of the adjustment connecting rod assembly is adjustable.
[0007] According to the adjustment mechanism of this disclosure, the first connecting rod has a first end and a second end at its two ends along its length. The first end is rotatably connected to the upper housing of the telescopic section, and the second end is rotatably connected to the lower housing of the telescopic section. The second connecting rod is located below the first connecting rod, and the second connecting rod has a third end and a fourth end at its two ends along its length. The third end is rotatably connected to the upper housing of the telescopic section, and the fourth end is rotatably connected to the lower housing of the telescopic section. The adjustment connecting rod assembly has a fifth end and a sixth end at its two ends along its length. The fifth end is rotatably connected to the first end, and the sixth end is rotatably connected to the fourth end. The length of the adjustment connecting rod assembly is adjustable. This creates a triangular structure between the first connecting rod, the lower housing of the telescopic section, and the second connecting rod, and also creates a triangular structure between the first connecting rod, the upper housing of the telescopic section, and the second connecting rod. This increases the rigidity of the adjustment mechanism, reduces its deformation, and thus improves the consistency of the paving thickness and the road surface forming effect.
[0008] In some embodiments of this disclosure, the third end is rotatably connected to an elevation adjustment member, the elevation adjustment member being rotatably connected to the upper housing of the telescopic section, wherein the rotation axis of the third end relative to the elevation adjustment member is the rotation axis of the third end.
[0009] In some embodiments of this disclosure, the elevation adjustment component includes a first rotating shaft and a second rotating shaft. The first rotating shaft is sleeved outside the second rotating shaft. The first rotating shaft and the second rotating shaft are eccentrically arranged. The first rotating shaft is rotatably connected to the third end, and the second rotating shaft is rotatably connected to the upper housing of the telescopic section.
[0010] In some embodiments of this disclosure, the rotation axis of the first end, the rotation axis of the second end, the rotation axis of the third end, the rotation axis of the fourth end, the rotation axis of the fifth end, and the rotation axis of the sixth end are parallel.
[0011] In some embodiments of this disclosure, the rotation axis of the third end relative to the elevation adjustment member is parallel to the rotation axis of the elevation adjustment member relative to the upper box of the telescopic section.
[0012] In some embodiments of this disclosure, the shortest distance between the rotation axis of the third end and the rotation axis of the fourth end is equal to the shortest distance between the rotation axis of the first end and the rotation axis of the second end; and / or, the shortest distance between the rotation axis of the third end and the rotation axis of the first end is equal to the shortest distance between the rotation axis of the fourth end and the rotation axis of the second end.
[0013] In some embodiments of this disclosure, the adjusting linkage assembly includes: a first adjusting member, a second adjusting member, and a third adjusting member connected sequentially in the arrangement direction of the first end and the fourth end; one end of the first adjusting member in the length direction is the fifth end, and the first adjusting member has a clearance hole extending through the first adjusting member in the length direction; one end of the second adjusting member is disposed in the clearance hole, and the other end of the second adjusting member faces the third adjusting member and has a telescopic groove extending in the length direction of the second adjusting member; one end of the third adjusting member is the sixth end, and the third adjusting member is telescopically disposed in the telescopic groove.
[0014] In some embodiments of this disclosure, the inner peripheral wall of the telescopic groove has an external thread, and the outer peripheral wall of the third adjusting member has an internal thread that mates with the external thread; the second adjusting member has a locked state and an unlocked state, in which the second adjusting member is rotatably inserted into the clearance hole, and the rotation axis of the second adjusting member is perpendicular to the rotation axis of the first end; in the locked state, the second adjusting member is fixed relative to the first adjusting member.
[0015] In some embodiments of this disclosure, the second adjusting member has a stop portion, the telescopic groove is disposed at one end of the stop portion facing the third adjusting member, and the adjusting linkage assembly further includes: a locking member, the locking member being movably disposed on the second adjusting member along the length direction of the second adjusting member, and the first adjusting member being disposed between the locking member and the stop portion; From the unlocked state to the locked state, the locking member moves toward the stop portion to fix the first adjusting member and the second adjusting member relative to each other; from the locked state to the unlocked state, the locking member moves away from the stop portion.
[0016] In some embodiments of this disclosure, the adjusting linkage assembly includes: a first adjusting member, a driving member, and a second adjusting member; the first adjusting member and the second adjusting member are distributed in the arrangement direction of the first end and the fourth end, one end of the first adjusting member in the length direction is the fifth end, the driving member is fixed to the end of the first adjusting member opposite to the fifth end; the end of the second adjusting member opposite to the first adjusting member is the sixth end, the second adjusting member is connected to the drive shaft of the driving member, and the driving member is used to drive the second adjusting member to move in the length direction of the first adjusting member.
[0017] An ironing board according to an embodiment of the present disclosure includes: an upper telescopic box; a lower telescopic box; and the aforementioned adjustment mechanism, wherein the upper telescopic box and the lower telescopic box are rotatably and movably connected by the adjustment mechanism.
[0018] According to the screed plate of this disclosure, by setting the above-mentioned adjustment mechanism, the two ends of the first connecting rod in the length direction are respectively a first end and a second end. The first end is adapted to be rotatably connected to the upper box of the telescopic section, and the second end is adapted to be rotatably connected to the lower box of the telescopic section. The second connecting rod is located below the first connecting rod, and the two ends of the second connecting rod in the length direction are respectively a third end and a fourth end. The third end is adapted to be rotatably connected to the upper box of the telescopic section, and the fourth end is adapted to be rotatably connected to the lower box of the telescopic section. The two ends of the adjusting connecting rod assembly in the length direction are respectively a fifth end and a sixth end. The fifth end is rotatably connected to the first end, and the sixth end is rotatably connected to the fourth end. The length of the adjusting connecting rod assembly is adjustable. This makes a triangular structure formed between the first connecting rod, the lower box of the telescopic section, and the second connecting rod, and also makes a triangular structure formed between the first connecting rod, the upper box of the telescopic section, and the second connecting rod, which improves the rigidity of the adjustment mechanism, reduces the deformation of the adjustment mechanism, and thus improves the consistency of the paving thickness and the road surface forming effect.
[0019] The paver according to an embodiment of the present disclosure includes: the screed described above.
[0020] According to the paver of this disclosure, by setting the screed and the adjustment mechanism described above, the two ends of the first connecting rod in the length direction are respectively a first end and a second end. The first end is adapted to be rotatably connected to the upper box of the telescopic section, and the second end is adapted to be rotatably connected to the lower box of the telescopic section. The second connecting rod is located below the first connecting rod, and the two ends of the second connecting rod in the length direction are respectively a third end and a fourth end. The third end is adapted to be rotatably connected to the upper box of the telescopic section, and the fourth end is adapted to be rotatably connected to the lower box of the telescopic section. The two ends of the adjustment connecting rod assembly in the length direction are respectively a fifth end and a sixth end. The fifth end is rotatably connected to the first end, and the sixth end is rotatably connected to the fourth end. The length of the adjustment connecting rod assembly is adjustable. This forms a triangular structure between the first connecting rod, the lower box of the telescopic section, and the second connecting rod, and also forms a triangular structure between the first connecting rod, the upper box of the telescopic section, and the second connecting rod. This improves the rigidity of the adjustment mechanism, reduces the deformation of the adjustment mechanism, and thus improves the consistency of the paving thickness and the road surface forming effect. Attached Figure Description
[0021] Figure 1 This is a partial structural perspective view of an ironing board according to an embodiment of the present disclosure.
[0022] Figure 2 This is a simplified diagram of the adjustment mechanism according to an embodiment of the present disclosure.
[0023] Figure 3 yes Figure 1 Enlarged view of point A in the middle.
[0024] Figure 4 This is a top view of the elevation adjustment member of the adjustment mechanism according to an embodiment of the present disclosure.
[0025] Figure 5 This is a cross-sectional schematic diagram of the adjusting linkage assembly of the adjusting mechanism according to an embodiment of the present disclosure.
[0026] Figure 6 This is a cross-sectional schematic diagram of the adjusting linkage assembly of the adjusting mechanism according to another embodiment of the present disclosure.
[0027] Figure label: 100. Flat iron; 10. Adjustment mechanism; 1. Height difference adjustment assembly; 11. First connecting rod; 111. First end; 112. Second end; 12. Second connecting rod; 121. Third end; 122. Fourth end; 13. Adjusting connecting rod assembly; 131. First adjusting component; 132. Second adjusting component; 133. Third adjusting component; 134. Driving component; 135. Fifth end; 136. Sixth end; 137. Telescopic groove; 138. Stop part; 139. Locking component; 140. Protective pad; 141. Bearing; 2. Elevation adjustment component; 21. First rotating shaft; 211. Shaft hole; 22. Second rotating shaft; 20. Upper box body of the telescopic section; 30. Lower box body of the telescopic section. Detailed Implementation
[0028] In this disclosure, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0029] In the embodiments of this disclosure, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0030] In the description of embodiments of this disclosure, the term "at least one" refers to one or more, and "more than one" refers to two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, a, b, a, c, b, c, or a, b, c, where a, b, and c can be single or multiple.
[0031] In the description of embodiments of this disclosure, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this disclosure generally indicates that the preceding and following related objects have an "or" relationship.
[0032] In the description of the embodiments disclosed herein, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.
[0033] As used herein, "perpendicular" and "equal" include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable range of deviation for approximate perpendicularity could be, for example, a deviation within 10°. "Equal" includes absolute equality and approximate equality, where the acceptable range of deviation for approximate equality could be, for example, a difference between the two equalities less than or equal to 10% of either one.
[0034] In existing technology, a paver includes a screed, which comprises an extension section, a main section, and an adjustment mechanism. The extension section includes an upper and a lower housing. The adjustment mechanism can adjust the height difference and elevation angle of the extension section (mainly achieved by adjusting the lower housing). Height difference adjustment ensures that the main and extension sections are on the same horizontal line, resulting in consistent paving thickness and surface finish. Adjusting the elevation angle compensates for deformation of the extension section, ensuring its feed rate matches that of the main section.
[0035] In related technologies, the adjustment mechanism includes a height difference adjustment component, which comprises nut blocks and an adjusting screw. The adjusting screw has oppositely oriented external threads at both ends, and matching nut blocks at each end. These nut blocks are located within a fixed plate assembly and are threadedly connected to the adjusting screw. A connecting rod assembly is hinged to both nut blocks on either side. One end of the adjusting screw has a mounting plate, and the adjusting screw is rotatably connected to the mounting plate. The portion of the adjusting screw extending beyond the mounting plate has a height difference adjustment section. This results in a quadrilateral structure formed between the two adjusting screws, the upper casing of the telescopic section, and the lower casing of the telescopic section. This causes the height difference adjustment component to deform unstablely when subjected to material pile resistance and the weight of the screed. Furthermore, the elastic deformation and fitting clearance of the height difference adjustment component cause significant changes in the elevation angle of the telescopic screed, thus affecting the consistency of the paving thickness and the road surface formation effect.
[0036] According to the adjustment mechanism of this embodiment, the first connecting rod has a first end and a second end at its two ends along its length. The first end is rotatably connected to the upper housing of the telescopic section, and the second end is rotatably connected to the lower housing of the telescopic section. The second connecting rod is located below the first connecting rod, and the second connecting rod has a third end and a fourth end at its two ends along its length. The third end is rotatably connected to the upper housing of the telescopic section, and the fourth end is rotatably connected to the lower housing of the telescopic section. The adjustment connecting rod assembly has a fifth end and a sixth end at its two ends along its length. The fifth end is rotatably connected to the first end, and the sixth end is rotatably connected to the fourth end. The length of the adjustment connecting rod assembly is adjustable. This creates a triangular structure between the first connecting rod, the lower housing of the telescopic section, and the second connecting rod, improving the rigidity of the adjustment mechanism, reducing its deformation, and thus improving the consistency of the paving thickness and the road surface forming effect.
[0037] The specific structure according to embodiments of this disclosure is described below with reference to the accompanying drawings.
[0038] A paver according to an embodiment of the present disclosure is described below with reference to the accompanying drawings.
[0039] A paver according to an embodiment of the present disclosure includes a screed 100.
[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the ironing board 100 according to an embodiment of the present disclosure includes: an upper telescopic box 20, a lower telescopic box 30, and an adjustment mechanism 10. The upper telescopic box 20 and the lower telescopic box 30 are rotatably and movably connected by the adjustment mechanism 10, which is used to adjust the height difference and elevation angle of the lower telescopic box 30.
[0041] It should be noted that the elevation difference refers to the vertical distance difference between the bottom surface of the lower box 30 of the expansion joint and the reference surface (such as the paved road surface or the bottom surface of the fixed section of the screed). The elevation difference directly determines the initial filling thickness of the material to be paved and is one of the core parameters affecting the final compacted thickness of the road surface. The elevation angle refers to the angle between the bottom surface of the lower box 30 of the expansion joint and the horizontal direction. By adjusting the elevation angle, the force angle when the material enters the screed 100 can be changed, thereby optimizing the paving uniformity and pre-compaction effect of the material. The synergistic effect of the elevation difference and elevation angle changes, through the linkage control of the adjustment mechanism 10, can achieve precise adaptation to paving processes of different road grades and different material types (such as asphalt mixtures, stabilized soil, etc.), ensuring that stable paving quality can be maintained even when facing roadbed undulations or material supply fluctuations during continuous operation.
[0042] Therefore, the position between the upper box 20 and the lower box 30 of the expansion section can be changed, thereby adjusting the height difference and elevation angle of the lower box 30 of the expansion section, making the main section and the expansion section of the screed 100 flush, which is beneficial to improving the consistency of the paving thickness and the road surface forming effect.
[0043] The adjustment mechanism 10 according to an embodiment of the present disclosure is described below with reference to the accompanying drawings.
[0044] like Figure 1 , Figure 2 and Figure 3 As shown, the adjustment mechanism 10 according to an embodiment of the present disclosure includes: a height difference adjustment component 1.
[0045] Specifically, refer to Figure 1 , Figure 2 and Figure 3 As shown, the height difference adjustment assembly 1 includes: a first connecting rod 11, a second connecting rod 12, and an adjustment connecting rod assembly 13.
[0046] Please continue reading. Figure 1 , Figure 2 and Figure 3 As shown, the two ends of the first connecting rod 11 along its length are a first end 111 and a second end 112, respectively. The first end 111 is adapted to be rotatably connected to the upper housing 20 of the telescopic section (e.g., by hinge), and the second end 112 is adapted to be rotatably connected to the lower housing 30 of the telescopic section (e.g., by hinge). For example, in Figure 2 In the middle, the hinge point between the first end 111 and the upper box 20 of the telescopic section is point B, and the hinge point between the second end 112 and the lower box 30 of the telescopic section is point C.
[0047] The upper box 20 of the telescopic section is relatively fixed. Since the first end 111 is adapted to be rotatably connected to the upper box 20 of the telescopic section and the second end 112 is adapted to be rotatably connected to the lower box 30 of the telescopic section, when the lower box 30 of the telescopic section moves relative to the upper box 20 of the telescopic section, the first connecting rod 11 can rotate around the connection point with the upper box 20 and the lower box 30 of the telescopic section, which is beneficial to adapt to the changes in position, height difference and elevation angle between the two.
[0048] Please continue reading. Figure 1 , Figure 2 and Figure 3 As shown, the second link 12 is located below the first link 11. The two ends of the second link 12 along its length are a third end 121 and a fourth end 122, respectively. The third end 121 is adapted to be rotatably connected (e.g., hinged) to the upper housing 20 of the telescopic section, and the fourth end 122 is adapted to be rotatably connected (e.g., hinged) to the lower housing 30 of the telescopic section. For example, in... Figure 2 In the diagram, the hinge points between the third end 121 and the upper box 20 of the telescopic section are points E and F, and the hinge point between the second end 112 and the lower box 30 of the telescopic section is point C. It should be noted that the third end 121 and the first end 111 are arranged opposite each other in the vertical direction, and the second end 112 and the fourth end 122 are arranged opposite each other in the vertical direction.
[0049] Similar to the first link 11, when the lower telescopic housing 30 moves relative to the upper telescopic housing 20, the second link 12 can also rotate around the connection point between the upper telescopic housing 20 and the lower telescopic housing 30. This design allows the second link 12 to cooperate with the first link 11 to adapt to changes in position, height difference, and elevation angle between the upper and lower telescopic housings 20 and 30, enhancing the overall stability and flexibility of the adjustment mechanism 10. Moreover, the second link 12 and the first link 11 form a collaborative working relationship in structure; through their rotation, their relative positions can be adjusted more precisely to meet the usage requirements under different working conditions.
[0050] Please continue reading. Figure 1 , Figure 2 and Figure 3 As shown, the two ends of the adjusting linkage assembly 13 in the length direction are the fifth end 135 and the sixth end 136, respectively. The fifth end 135 and the first end 111 are rotatably connected (such as a compound hinge), and the sixth end 136 and the fourth end 122 are rotatably connected (such as a compound hinge). The length of the adjusting linkage assembly 13 is adjustable. The hinge point between the sixth end 136 and the fourth end 122 is point D, and the hinge point between the fifth end 135 and the first end 111 is point B.
[0051] Understandably, by rotatably connecting the two ends of the adjusting linkage assembly 13 along its length to the first end 111 and the fourth end 122 respectively, a triangular structure is formed between the first link 11, the lower telescopic section housing 30, and the second link 12. This increases the rigidity of the adjusting mechanism 10 and reduces its deformation, thereby improving the consistency of the paving thickness and the road surface shaping effect. Furthermore, the triangular structure formed between the first link 11, the upper telescopic section housing 20, and the second link 12 further increases the rigidity of the adjusting mechanism 10, reduces its deformation, and thus improves the consistency of the paving thickness and the road surface shaping effect.
[0052] The length of the adjusting linkage assembly 13 is adjustable, thus making the adjusting linkage assembly 13 a linear actuator of the adjusting mechanism 10. By adjusting the change in the length of the linkage assembly 13, the height difference of the lower box 30 of the telescopic section can be changed, thereby realizing the adjustment of the height difference of the lower box 30 of the telescopic section. The adjustment method is simple and reliable.
[0053] The following is based on Figure 2 The example shown illustrates the height adjustment process of the lower telescopic housing 30. When the lower telescopic housing 30 needs to be moved upward, the length of the adjusting linkage assembly 13 is shortened, thereby driving the fourth end 122 of the second link 12 to move closer to the first end 111, thus driving the second link 12 to rotate clockwise. The second link 12, through the lower telescopic housing 30, drives the first link 11 and the second link 12 to rotate clockwise synchronously, achieving the raising of the lower telescopic housing 30. When the lower telescopic housing 30 needs to be moved downward, the length of the adjusting linkage assembly 13 is extended, thereby driving the fourth end 122 of the second link 12 to move away from the first end 111, thus driving the second link 12 to rotate counterclockwise. The second link 12, through the lower telescopic housing 30, drives the first link 11 and the second link 12 to rotate counterclockwise synchronously, achieving the lower telescopic housing 30.
[0054] According to the adjustment mechanism 10 of this disclosure embodiment, the two ends of the first connecting rod 11 in the length direction are a first end 111 and a second end 112, respectively. The first end 111 is adapted to be rotatably connected to the upper box 20 of the telescopic section, and the second end 112 is adapted to be rotatably connected to the lower box 30 of the telescopic section. The second connecting rod 12 is located below the first connecting rod 11, and the two ends of the second connecting rod 12 in the length direction are a third end 121 and a fourth end 122, respectively. The third end 121 is adapted to be rotatably connected to the upper box 20 of the telescopic section, and the fourth end 122 is adapted to be rotatably connected to the lower box 30 of the telescopic section. The two ends of the adjustment link assembly 13 in the length direction are a fifth end 135 and a sixth end 136, respectively. The fifth end 135 is rotatably connected to the first end 111, and the sixth end 136 is rotatably connected to the fourth end 122. The length of the adjustment link assembly 13 is adjustable. This creates a triangular structure between the first link 11, the lower box 30 of the telescopic section, and the second link 12, and also between the first link 11, the upper box 20 of the telescopic section, and the second link 12. This increases the rigidity of the adjustment mechanism 10 and reduces its deformation, thereby improving the consistency of the paving thickness and the road surface forming effect.
[0055] Please refer to some embodiments of this disclosure. Figure 2 , Figure 3 and Figure 4 As shown, the third end 121 is rotatably connected to the elevation adjustment component 2, and the elevation adjustment component 2 is rotatably connected to the upper box 20 of the telescopic section. The rotation axis of the third end 121 relative to the elevation adjustment component 2 is the rotation axis of the third end 121.
[0056] Understandably, the third end 121 is rotatable relative to the elevation adjustment component 2, allowing the second link 12 to move synchronously with the movement of the first link 11, thereby avoiding interference with the elevation adjustment component 1. Furthermore, the elevation adjustment component 2 is rotatably connected to the upper housing 20 of the telescopic section, thus enabling the adjustment of the elevation angle of the lower housing 30 of the telescopic section by changing the angle of the second link 12.
[0057] Meanwhile, since the fifth end 135 and the first end 111 are rotatably connected, and the sixth end 136 and the fourth end 122 are rotatably connected, while the elevation adjustment component 2 is located at the third end 121, i.e., the adjusting linkage assembly 13 and the elevation adjustment component 2 are spaced apart, interference during adjustment is avoided. This spaced arrangement also provides more flexible movement space for the entire adjusting mechanism 10. In actual operation, the adjusting linkage assembly 13 and the elevation adjustment component 2 perform adjustment actions independently, without being restricted by their relative positions. For example, when the adjusting linkage assembly 13 adjusts its length to adjust the height difference of the lower box 30 of the telescopic section, the elevation adjustment component 2 can simultaneously adjust its angle without interfering with each other. This allows for more precise control of the position and elevation angle of the lower box 30 of the telescopic section, thereby better ensuring the consistency of the paving thickness and the road surface forming effect. Moreover, this design also reduces the probability of malfunctions during adjustment, improving the reliability and stability of the entire screed 100's adjusting mechanism 10.
[0058] Please refer to some embodiments of this disclosure. Figure 2 , Figure 3 and Figure 4 As shown, the elevation adjustment component 2 includes a first rotating shaft 21 and a second rotating shaft 22. The first rotating shaft 21 is sleeved outside the second rotating shaft 22. The first rotating shaft 21 and the second rotating shaft 22 are eccentrically arranged. The first rotating shaft 21 is rotatably connected to the third end 121. The second rotating shaft 22 is rotatably connected to the upper box 20 of the telescopic section.
[0059] It should be noted that, for example Figure 3 and Figure 4 As shown, the first rotating shaft 21 has a shaft hole 211 extending through the first rotating shaft 21 along its axial direction. The second rotating shaft 22 passes through the shaft hole 211. The axis of the first rotating shaft 21 is point E, and the axis of the second rotating shaft 22 (shaft hole 211) is point F. At least one end of the second rotating shaft 22 protrudes from the first rotating shaft 21 along its length, allowing this protruding end of the second rotating shaft 22 to be rotatably connected to the upper housing 20 of the telescopic section. Therefore, this design, where at least one end of the second rotating shaft 22 protrudes from the first rotating shaft 21, facilitates the connection to the upper housing 20 of the telescopic section, while also ensuring the stability and reliability of the connection. This makes the entire elevation angle adjustment process smoother, preventing problems such as jamming or loosening of the connection.
[0060] In actual adjustment, when the elevation angle needs to be adjusted, the operator can rotate either the first rotating shaft 21 or the second rotating shaft 22. Because the first rotating shaft 21 and the second rotating shaft 22 are eccentrically positioned, rotating one shaft will cause relative movement with the other, thereby changing the positional relationship of the third end 121 relative to the upper housing 20 of the telescopic section. This, in turn, changes the positional relationship of the second connecting rod 12 relative to the upper housing 20 of the telescopic section, and consequently changes the positional relationship of the lower housing 30 of the telescopic section relative to the upper housing 20, thus achieving elevation angle adjustment. This eccentric design makes elevation angle adjustment more flexible and precise, meeting the adjustment needs of the screed 100° elevation angle in different construction scenarios.
[0061] For example in Figure 3 and Figure 4 In the example shown, the operator can adjust the elevation angle by rotating the first rotating shaft 21. When the first rotating shaft 21 is rotated, since the second rotating shaft 22 is located on the upper box 20 of the telescopic section, that is, the second rotating shaft 22 is fixed, the first rotating shaft 21 moves in a circle around the axis of the second rotating shaft 22. The first rotating shaft 21 is connected to the third end 121, so that the first rotating shaft 21 drives the third end 121 to move in a circle around the axis of the second rotating shaft 22, thereby changing the positional relationship of the second connecting rod 12 relative to the upper box 20 of the telescopic section, thereby changing the positional relationship of the lower box 30 of the telescopic section relative to the upper box 20 of the telescopic section, thus realizing the adjustment of the elevation angle.
[0062] Please refer to some embodiments of this disclosure. Figure 1 , Figure 2 and Figure 3 As shown, the rotation axes of the first end 111, the second end 112, the third end 121, the fourth end 122, the fifth end 135, and the sixth end 136 are parallel. This facilitates the movement of the first connecting rod 11, the second connecting rod 12, and the adjusting connecting rod assembly 13 within a single plane, avoiding mutual interference.
[0063] Specifically, this design with multiple parallel rotation axes ensures that the movement trajectories of each link in the adjustment mechanism 10 remain within the same plane during operation, effectively avoiding jamming and interference problems caused by misaligned axes, and significantly improving the smoothness and stability of elevation and height difference adjustments. At the same time, this design also reduces the assembly difficulty of the adjustment mechanism 10, as the installation and positioning of each rotating component can be calibrated using a unified reference surface.
[0064] Please refer to some embodiments of this disclosure. Figure 2 , Figure 3 and Figure 4As shown, the third end 121 is relative to the rotation axis of the elevation adjustment member 2 (e.g., at...). Figure 4 The axis of rotation passing through point E) and the axis of rotation of the elevation adjustment component 2 relative to the upper box 20 of the telescopic section (e.g., in Figure 4 The axis of rotation passing through point F is parallel to the axis of rotation.
[0065] Understandably, the aforementioned design with parallel dual rotation axes further enhances the synergy of the movement of the adjustment mechanism 10. When the elevation adjustment component 2 rotates about its rotation axis (point F axis) relative to the upper box 20 of the telescopic section, the third end 121 can follow along a trajectory parallel to this axis, ensuring that the connection between the second link 12 and the elevation adjustment component 2 always maintains a stable stress state and avoiding additional torsional stress caused by the angle between the axes.
[0066] Please refer to some embodiments of this disclosure. Figure 2 and Figure 3 As shown, the shortest distance between the rotation axis of the third end 121 and the rotation axis of the fourth end 122 is equal to the shortest distance between the rotation axis of the first end 111 and the rotation axis of the second end 112.
[0067] It is understandable that during height difference adjustment, the shortest distance between the rotation axis of the third end 121 and the rotation axis of the fourth end 122 is equal to the shortest distance between the rotation axis of the first end 111 and the rotation axis of the second end 112. This is beneficial because when the first link 11 and the second link 12 rotate synchronously, the paths traveled by the second end 112 and the fourth end 122 remain equal. This prevents the elevation angle of the lower box 30 of the telescopic section from changing when the adjustment mechanism 10 performs height difference adjustment, and avoids interference with the elevation angle adjustment results of other adjustment components, such as the elevation angle adjustment component 2 of this disclosure, on the elevation angle adjustment of the lower box 30 of the telescopic section.
[0068] This design ensures the coordinated movement of all components during elevation adjustment, preventing unintended impacts on pre-set elevation angle parameters. In real-world construction applications, the complex and variable construction environment demands extremely high precision in the adjustments of the screed 100. This design significantly improves the stability and reliability of the screed 100's adjustment, reduces construction errors caused by mutual interference during the adjustment process, effectively enhances construction quality and efficiency, and provides strong support for high-quality paving operations in various construction scenarios.
[0069] Meanwhile, this equidistant design further enhances the structural symmetry and mechanical balance of the entire adjustment mechanism 10. During actual operation, when the first link 11 and the second link 12 rotate under external force, the equidistant relationship ensures that the torques on the second end 112 and the fourth end 122 are essentially the same. This makes the rotation of the two links smoother and more uniform, preventing excessive wear or jamming due to uneven force distribution. This significantly extends the service life of the adjustment mechanism 10 and also improves the response speed and accuracy of the ironing board 100 during adjustment, better adapting to the diverse adjustment needs of the ironing board 100 in different construction scenarios.
[0070] Furthermore, such as Figure 2 As shown, the first link 11 and the second link 12 are arranged in parallel, which further helps to reduce construction errors caused by mutual interference during the adjustment process, effectively improves construction quality and efficiency, and provides a strong guarantee for high-quality paving operations in different construction scenarios.
[0071] Furthermore, the adjustment mechanism 10 in this embodiment also includes an elevation angle adjustment member 2. When the elevation angle of the lower housing 30 of the telescopic section is adjusted by the elevation angle adjustment member 2, the shortest distance between the rotation axis of the third end 121 and the rotation axis of the fourth end 122 and the shortest distance between the rotation axis of the first end 111 and the rotation axis of the second end 112 may or may not be equal. The first connecting rod 11 and the second connecting rod 12 may or may not be parallel. However, the elevation angle adjustment member 2 can be used to make the first connecting rod 11 and the second connecting rod 12 parallel, and to make the shortest distance between the rotation axis of the third end 121 and the rotation axis of the fourth end 122 and the shortest distance between the rotation axis of the first end 111 and the rotation axis of the second end 112 equal. In this case, the height difference adjustment is then performed. That is, the elevation angle is adjusted to achieve the optimal height difference adjustment position, then the height difference is adjusted to reach the preset height, and finally the elevation angle is adjusted to reach the preset elevation angle.
[0072] Please refer to some embodiments of this disclosure. Figure 2 and Figure 3 As shown, the shortest distance between the rotation axis of the third end 121 and the rotation axis of the first end 111 is equal to the shortest distance between the rotation axis of the fourth end 122 and the rotation axis of the second end 112.
[0073] It is understandable that during height difference adjustment, the shortest distance between the rotation axis of the third end 121 and the rotation axis of the first end 111 and the shortest distance between the rotation axis of the fourth end 122 and the rotation axis of the second end 112 are equal. This is beneficial because when the first link 11 and the second link 12 rotate synchronously, the paths traveled by the second end 112 and the fourth end 122 remain equal. This prevents the elevation angle of the lower box 30 of the telescopic section from changing when the adjustment mechanism 10 performs height difference adjustment, and avoids interference with the elevation angle adjustment results of other adjustment components, such as the elevation angle adjustment component 2 of this disclosure, on the elevation angle adjustment of the lower box 30 of the telescopic section.
[0074] This design ensures the coordinated movement of all components during elevation adjustment, preventing unintended impacts on pre-set elevation angle parameters. In real-world construction applications, the complex and variable construction environment demands extremely high precision in the adjustments of the screed 100. This design significantly improves the stability and reliability of the screed 100's adjustment, reduces construction errors caused by mutual interference during the adjustment process, effectively enhances construction quality and efficiency, and provides strong support for high-quality paving operations in various construction scenarios.
[0075] Meanwhile, this equidistant design further enhances the structural symmetry and mechanical balance of the entire adjustment mechanism 10. During actual operation, when the first link 11 and the second link 12 rotate under external force, the equidistant relationship ensures that the torques on the second end 112 and the fourth end 122 are essentially the same. This makes the rotation of the two links smoother and more uniform, preventing excessive wear or jamming due to uneven force distribution. This significantly extends the service life of the adjustment mechanism 10 and also improves the response speed and accuracy of the ironing board 100 during adjustment, better adapting to the diverse adjustment needs of the ironing board 100 in different construction scenarios.
[0076] Furthermore, such as Figure 2 As shown, the line connecting the minimum distance between the rotation axis of the second end 112 and the rotation axis of the fourth end 122 is set parallel to the line connecting the minimum distance between the rotation axis of the first end 111 and the rotation axis of the third end 121. This further helps to reduce construction errors caused by mutual interference during the adjustment process, effectively improves construction quality and efficiency, and provides a strong guarantee for high-quality paving operations in different construction scenarios.
[0077] Furthermore, the adjustment mechanism 10 in this embodiment of the present disclosure also includes an elevation angle adjustment member 2. When the elevation angle of the lower box 30 of the telescopic section is adjusted by the elevation angle adjustment member 2, the shortest distance between the rotation axis of the third end 121 and the rotation axis of the first end 111 and the shortest distance between the rotation axis of the fourth end 122 and the rotation axis of the second end 112 may not be equal or may be equal. The line connecting the minimum distance between the rotation axis of the second end 112 and the rotation axis of the fourth end 122 and the line connecting the minimum distance between the rotation axis of the first end 111 and the rotation axis of the third end 121 may be parallel or may not be parallel. However, the elevation angle can be adjusted using the elevation adjustment component 2 to ensure that the line connecting the minimum distance between the rotation axes of the second end 112 and the fourth end 122 is parallel to the line connecting the minimum distance between the rotation axes of the first end 111 and the third end 121. Furthermore, the shortest distance between the rotation axes of the third end 121 and the first end 111, and the shortest distance between the rotation axes of the fourth end 122 and the second end 112, are equal. Only under these conditions should the elevation difference be adjusted. That is, first, elevation angle adjustment is performed to achieve the optimal elevation difference adjustment position; then, elevation difference adjustment is performed to reach the preset height; finally, elevation angle adjustment is performed to reach the preset elevation angle.
[0078] In some embodiments of this disclosure, please refer to Figure 3 and combined Figure 5 As shown, the adjusting linkage assembly 13 includes: a first adjusting member 131, a second adjusting member 132, and a third adjusting member 133 connected sequentially in the arrangement direction of the first end 111 and the fourth end 122; one end of the first adjusting member 131 in the length direction is the fifth end 135, and the first adjusting member 131 has a clearance hole (not shown) that passes through the first adjusting member 131 in the length direction; one end of the second adjusting member 132 is inserted into the clearance hole, and the other end of the second adjusting member 132 faces the third adjusting member 133 and has a telescopic groove 137 extending in the length direction of the second adjusting member 132; one end of the third adjusting member 133 is the sixth end 136, and the third adjusting member 133 is telescopically disposed in the telescopic groove 137.
[0079] Understandably, the first adjusting member 131 is rotatably connected to the upper housing 20 of the telescopic section. When the first adjusting member 131 rotates relative to the upper housing 20 of the telescopic section, it can drive the second adjusting member 132 and the third adjusting member 133 to rotate synchronously. The second adjusting member 132 can serve as a sleeve, i.e., a guide, for the telescopic movement of the third adjusting member 133, thereby restricting the third adjusting member 133 to move and adjust along the length of the second adjusting member 132. This achieves the adjustment of the length of the adjusting linkage assembly 13. When the third adjusting member 133 moves telescopically within the telescopic groove 137 of the second adjusting member 132, its movement is smooth and precise, and it can accurately adjust its position according to actual needs.
[0080] Please refer to some embodiments of this disclosure. Figure 5 As shown, the inner peripheral wall of the telescopic groove 137 has an external thread, and the outer peripheral wall of the third adjusting member 133 has an internal thread that mates with the external thread. It is understandable that when the second adjusting member 132 rotates, the third adjusting member 133 can convert the rotation between the third adjusting member 133 and the second adjusting member 132 into the telescopic movement of the third adjusting member 133 along the length direction of the second adjusting member 132 in the telescopic groove 137 through the threaded engagement, thereby realizing the adjustment of the length of the adjusting linkage assembly 13.
[0081] The second adjusting member 132 has a locked state and an unlocked state. In the unlocked state, the second adjusting member 132 is rotatably inserted into the clearance hole, and the rotation axis of the second adjusting member 132 is perpendicular to the rotation axis of the first end 111. In the locked state, the second adjusting member 132 is fixed relative to the first adjusting member 131.
[0082] Therefore, when it is necessary to adjust the height difference, the height difference can be adjusted by unlocking the second adjusting member 132 and rotating the second adjusting member 132. When it is not necessary to adjust the height difference, the second adjusting member 132 can be locked to prevent the second adjusting member 132 from rotating and affecting the height difference of the lower box 30 of the telescopic section, thus achieving precise control of the height difference of the lower box 30 of the telescopic section.
[0083] For further information, please refer to [link / reference]. Figure 5 As shown, a bearing 141 is provided between the second adjusting member 132 and the wall of the clearance hole, thereby ensuring the smooth rotation of the second adjusting member 132.
[0084] Please refer to some embodiments of this disclosure. Figure 5 As shown, the second adjusting member 132 has a stop portion 138, and a telescopic groove 137 is provided at one end of the stop portion 138 facing the third adjusting member 133. The adjusting linkage assembly 13 also includes a locking member 139, which is movably disposed on the second adjusting member 132 along the length direction of the second adjusting member 132. The first adjusting member 131 is disposed between the locking member 139 and the stop portion 138. The locking member 139 can be a nut, and the outer peripheral wall of the second adjusting member 132 has a threaded portion that mates with the nut.
[0085] From the unlocked state to the locked state, the locking member 139 moves toward the stop portion 138 to fix the first adjusting member 131 and the second adjusting member 132 relative to each other; from the locked state to the unlocked state, the locking member 139 moves away from the stop portion 138.
[0086] It is understandable that the cross-sectional area of the stop portion 138 is larger than the cross-sectional area of the clearance hole. When the locking member 139 moves toward the stop portion 138, the distance between the locking member 139 and the stop portion 138 gradually decreases, thereby causing the first adjusting member 131 to be clamped between the locking member 139 and the stop portion 138. At this time, the second adjusting member 132 is locked by the action of friction, preventing the rotation of the second adjusting member 132.
[0087] For further information, please refer to [link / reference]. Figure 5 As shown, there are two bearings 141, which are located at both ends of the length of the first adjusting member 131. A protective pad 140 is provided between the locking member 139 and the bearing 141 to avoid damage to the bearing 141. At the same time, a protective pad 140 is also provided between the locking member 139 and the bearing 141 to further avoid damage to the bearing 141.
[0088] In some embodiments of this disclosure, please refer to Figure 6 As shown, the adjusting linkage assembly 13 includes: a first adjusting member 131, a driving member 134, and a second adjusting member 132.
[0089] The first adjusting member 131 and the second adjusting member 132 are distributed in the arrangement direction of the first end 111 and the fourth end 122. One end of the first adjusting member 131 in the length direction is the fifth end 135, and the driving member 134 is fixed to the end of the first adjusting member 131 opposite to the fifth end 135. The end of the second adjusting member 132 opposite to the first adjusting member 131 is the sixth end 136. The second adjusting member 132 is connected to the drive shaft of the driving member 134, and the driving member 134 is used to drive the second adjusting member 132 to move in the length direction of the first adjusting member 131. The driving member 134 can be a linear motor, cylinder, or other structure.
[0090] Understandably, the driving component 134 provides a stable driving force for the second adjusting component 132, enabling the second adjusting component 132 to move precisely along the length of the first adjusting component 131. This design not only improves the adjustment accuracy but also enhances the stability and reliability of the entire adjusting linkage assembly 13. In practical applications, different types and specifications of driving components 134 can be selected according to specific needs and scenarios. For example, linear motors are suitable for applications requiring high-speed, high-precision adjustment, while cylinders are more suitable for scenarios requiring greater thrust and lower cost.
[0091] In the description of this specification, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples without contradicting each other.
[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.
Claims
1. An adjustment mechanism, wherein the ironing board includes an upper telescopic box (20) and a lower telescopic box (30), the adjustment mechanism being used to adjust the height difference and elevation angle of the lower telescopic box (30), characterized in that, The adjustment mechanism includes: a height difference adjustment component (1), the height difference adjustment component (1) comprising: The first link (11) has a first end (111) and a second end (112) at its two ends along its length. The first end (111) is adapted to be rotatably connected to the upper box (20) of the telescopic section, and the second end (112) is adapted to be rotatably connected to the lower box (30) of the telescopic section. The second link (12) is located below the first link (11). The two ends of the second link (12) in the length direction are the third end (121) and the fourth end (122), respectively. The third end (121) is adapted to be rotatably connected to the upper box (20) of the telescopic section, and the fourth end (122) is adapted to be rotatably connected to the lower box (30) of the telescopic section. Adjustable linkage assembly (13), the two ends of the adjustable linkage assembly (13) in the length direction are the fifth end (135) and the sixth end (136), the fifth end (135) and the first end (111) are rotatably connected, the sixth end (136) and the fourth end (122) are rotatably connected, and the length of the adjustable linkage assembly (13) is adjustable.
2. The adjusting mechanism according to claim 1, characterized in that, The third end (121) is rotatably connected to an elevation adjustment member (2), and the elevation adjustment member (2) is rotatably connected to the upper box (20) of the telescopic section, wherein the rotation axis of the third end (121) relative to the elevation adjustment member (2) is the rotation axis of the third end (121).
3. The adjusting mechanism according to claim 2, characterized in that, The elevation adjustment component (2) includes a first rotating shaft (21) and a second rotating shaft (22). The first rotating shaft (21) is sleeved on the outside of the second rotating shaft (22). The first rotating shaft (21) and the second rotating shaft (22) are eccentrically arranged. The first rotating shaft (21) is rotatably connected to the third end (121). The second rotating shaft (22) is rotatably connected to the upper box (20) of the telescopic section.
4. The adjusting mechanism according to claim 2, characterized in that, The rotation axis of the first end (111), the rotation axis of the second end (112), the rotation axis of the third end (121), the rotation axis of the fourth end (122), the rotation axis of the fifth end (135), and the rotation axis of the sixth end (136) are parallel.
5. The adjusting mechanism according to claim 4, characterized in that, The rotation axis of the third end (121) relative to the elevation adjustment member (2) is parallel to the rotation axis of the elevation adjustment member (2) relative to the upper box (20) of the telescopic section.
6. The adjusting mechanism according to claim 4, characterized in that, The shortest distance between the rotation axis of the third end (121) and the rotation axis of the fourth end (122) is equal to the shortest distance between the rotation axis of the first end (111) and the rotation axis of the second end (112). And / or, the shortest distance between the rotation axis of the third end (121) and the rotation axis of the first end (111) is equal to the shortest distance between the rotation axis of the fourth end (122) and the rotation axis of the second end (112).
7. The adjusting mechanism according to claim 1, characterized in that, The adjusting linkage assembly (13) includes a first adjusting member (131), a second adjusting member (132) and a third adjusting member (133) connected sequentially in the arrangement direction of the first end (111) and the fourth end (122); One end of the first adjusting member (131) along its length is the fifth end (135), and the first adjusting member (131) has a clearance hole that passes through the first adjusting member (131) along its length. One end of the second adjusting member (132) passes through the clearance hole, and the other end of the second adjusting member (132) faces the third adjusting member (133), and has a telescopic groove (137) extending along the length direction of the second adjusting member (132); One end of the third adjusting member (133) is the sixth end (136), and the third adjusting member (133) is telescopically disposed in the telescopic groove (137).
8. The adjusting mechanism according to claim 7, characterized in that, The inner peripheral wall of the telescopic groove (137) has an external thread, and the outer peripheral wall of the third adjusting member (133) has an internal thread that mates with the external thread. The second adjusting member (132) has a locked state and an unlocked state. In the unlocked state, the second adjusting member (132) is rotatably inserted into the clearance hole. In the locked state, the second adjusting member (132) is fixed relative to the first adjusting member (131).
9. The adjusting mechanism according to claim 8, characterized in that, The second adjusting member (132) has a stop portion (138), and the telescopic groove (137) is provided at one end of the stop portion (138) facing the third adjusting member (133). The adjusting linkage assembly (13) further includes: A locking member (139) is movably disposed on the second adjusting member (132) along the length direction of the second adjusting member (132), and the first adjusting member (131) is disposed between the locking member (139) and the stop portion (138). From the unlocked state to the locked state, the locking member (139) moves toward the stop portion (138) to fix the first adjusting member (131) and the second adjusting member (132) relative to each other; from the locked state to the unlocked state, the locking member (139) moves away from the stop portion (138).
10. The adjusting mechanism according to claim 1, characterized in that, The adjusting linkage assembly (13) includes: a first adjusting member (131), a driving member (134), and a second adjusting member (132); The first adjusting member (131) and the second adjusting member (132) are distributed in the arrangement direction of the first end (111) and the fourth end (122). One end of the first adjusting member (131) in the length direction is the fifth end (135). The driving member (134) is fixed to the end of the first adjusting member (131) that is away from the fifth end (135). The end of the second adjusting member (132) opposite to the first adjusting member (131) is the sixth end (136). The second adjusting member (132) is connected to the drive shaft of the drive member (134). The drive member (134) is used to drive the second adjusting member (132) to move in the length direction of the first adjusting member (131).
11. An ironing board, characterized in that, include: The upper box of the telescopic section (20); Lower box body of telescopic section (30); According to any one of claims 1-10, the upper telescopic section housing (20) and the lower telescopic section housing (30) are rotatably and movablely connected by the adjustment mechanism.
12. A paver, characterized in that, include: The ironing board according to claim 11.