Vibrating device and paver

Abstract

The invention discloses a vibrating device and a paver, and belongs to the field of engineering machinery. The vibrating device comprises an eccentric shaft, an eccentric assembly and an eccentric flange; the eccentric shaft is rotationally mounted on the screed plate frame through a first mounting seat; the eccentric assembly is connected with a vibrating frame through a second mounting seat, and the eccentric section of the eccentric shaft is movably connected with the eccentric assembly; the eccentric flange is fixedly connected with the end of the eccentric shaft through bolts. Wherein the eccentric assembly is provided with a positioning part, the eccentric flange is provided with two connecting parts, the positioning part is telescopically connected with any connecting part, the installation angles of the eccentric shaft and the eccentric assembly are switched, and amplitude adjustment is achieved; according to the vibrating device, the eccentric sleeve does not need to be disassembled, the connecting part on the eccentric flange is selectively positioned by matching the rotating direction of the eccentric shaft with the limiting part, and the mounting angle switching of the eccentric shaft and the eccentric sleeve is realized so as to adapt to the requirements of different working conditions on the amplitude of the vibrating device; and the risk of equipment damage or poor paving quality caused by improper field manual adjustment is reduced.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a vibratory compaction device and a paver. Background Technology

[0002] Pavers are mainly used for paving the base and surface layers of high-grade highways. They typically include a material conveying device, a material distribution device, a traveling device, and a screed. The screed is primarily used for spreading, compacting, and smoothing the paving material, while the vibratory compactor is used to compact the paving material and is one of the key components of the screed that determines the paving quality. The required compaction degree of the paving material varies depending on the on-site construction, and therefore the paver's operating parameters also differ. The amplitude of the vibratory compactor is one of the key operating parameters of the paver's screed and needs to be matched according to the construction process.

[0003] Currently, adjustable amplitude vibratory compaction devices for screeds on the market all have eccentricity in both the eccentric sleeve and eccentric shaft. The sum of their vectors is the amplitude of the vibratory compaction device. Different working conditions require different amplitudes. When selecting multiple amplitudes, it is necessary to manually adjust the different assembly angles of the eccentric sleeve and eccentric shaft. Adjusting the amplitude of the vibratory compaction device requires manually loosening the fastening relationship between the eccentric sleeve and eccentric shaft, and then tightening it again after adjustment. Taking the paving of a 9-meter-wide road surface using a mechanically assembled single vibratory screed as an example, adjusting the amplitude of the screed's vibratory compaction device requires manually adjusting the assembly relationship between at least 12 eccentric sleeves and eccentric shafts, a very tedious and labor-intensive process. Furthermore, there is a risk of inconsistent amplitude adjustments in different sections of the vibratory compaction device, which can lead to the vibratory compaction device malfunctioning, damaging the bearings, resulting in poor paving quality, or even causing significant losses.

[0004] The process of adjusting the eccentric sleeve and eccentric shaft for matching and then adjusting is cumbersome, which may lead to inconsistent amplitude adjustment, resulting in poor construction quality or equipment damage. This is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this application is to provide a vibratory compaction device and a paver to solve the aforementioned defects caused by the prior art.

[0006] To achieve the above objectives, this application employs the following technical solution: Firstly, this application discloses a vibrating device, which includes... An eccentric shaft is rotatably mounted on the ironing board frame via a first mounting base; An eccentric assembly is provided, wherein a vibrating frame is connected to the eccentric assembly via a second mounting base, the vibrating frame is positioned within the limiting range of the screed frame, and the eccentric section of the eccentric shaft is movably connected to the eccentric assembly. An eccentric flange is fixedly connected to the end of the eccentric shaft; The eccentric assembly is provided with a positioning part, and the eccentric flange is provided with multiple connecting parts. The positioning part is telescopically connected to any of the connecting parts, and the installation angle of the eccentric shaft and the eccentric assembly is switched to realize amplitude adjustment.

[0007] In a further embodiment of this application, the eccentric assembly includes an eccentric sleeve and a retractable limiting pin. The eccentric sleeve is rotatably connected to the eccentric section of the eccentric shaft. The eccentric sleeve is radially provided with a limiting sleeve. The limiting pin is elastically installed in the cavity of the limiting sleeve by a spring. The eccentric sleeve is provided with a through hole. The eccentric flange is radially provided with multiple blind holes. The limiting pin passes through the through hole and engages with any of the blind holes.

[0008] A further improvement is that the preload of the limiting pin can be adjusted; The limiting sleeve is threaded with a screw, one end of the spring abuts against the screw, and the other end is fixedly connected to the limiting pin. Rotating the screw adjusts the installation space of the spring.

[0009] In a further embodiment, several of the blind holes are arranged in a circumferential row on the eccentric flange.

[0010] In a further embodiment, when the eccentric shaft is working, the constraint force of the spring satisfies the requirement to prevent the limiting pin from protruding from the blind hole.

[0011] In a further embodiment of this application, the second mounting base is provided with a driver, the driver is provided with a telescopic driving member, the driving member is provided with a driving surface, the positioning part is provided with a driven surface, the driving member drives the driving member to extend, so that the driving surface squeezes the driven surface, thereby realizing the contraction of the positioning part.

[0012] In a further embodiment of this application, the eccentric flange is provided with an outer circular claw-shaped surface, an outer circular mounting surface, and an inner hole fixing surface; the eccentric shaft includes a fixed section and an eccentric section that are axially connected. The outer circular claw-shaped surface is concentric with the fixed section, and the inner hole fixed surface is concentric with the eccentric section.

[0013] In a further embodiment, the eccentric sleeve is provided with an outer circular mating surface, an inner hole mating surface, an inner hole mounting surface, an outer end face, and an outer circular contour surface; The outer circular contour surface and the outer circular mating surface are concentric, the inner hole mating surface and the inner hole mounting surface are concentric, the outer circular mating surface is concentric with the fixed section, and the eccentric section is mounted with the inner hole mating surface.

[0014] In a further embodiment of this application, the ironing board frame is provided with an ironing board front plate, and the ironing board front plate and the ironing board frame form a limiting range.

[0015] In a first aspect, this application also discloses a paver that includes the aforementioned vibratory compaction device.

[0016] The beneficial effects of this application are as follows: In this application, the vibratory compaction device does not require disassembly of the eccentric sleeve. By using the rotation direction of the eccentric shaft in conjunction with the limiting part to select the connection part on the eccentric flange, the installation angle of the eccentric shaft and the eccentric sleeve can be switched. The combination of the connection parts accurately realizes the adjustment of multiple amplitudes of the vibratory compaction device to adapt to the amplitude requirements of the vibratory compaction device under different working conditions. Using this invention to adjust the amplitude of the vibratory compaction device greatly saves labor costs and reduces the risk of equipment damage or poor paving quality caused by improper on-site human adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation structure of the vibrating device in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the vibrating device in the embodiments of this application; Figure 3 This is a schematic diagram of the eccentric shaft in an embodiment of this application; Figure 4 This is a cross-sectional view of the eccentric assembly in an embodiment of this application; Figure 5 This is a schematic diagram of the limiting pin structure in an embodiment of this application; Figure 6 This is a cross-sectional view of the eccentric sleeve in an embodiment of this application; Figure 7 This is a cross-sectional view of the eccentric flange in an embodiment of this application; Figure 8 This is a schematic diagram of the driver structure in an embodiment of this application; Figure 9 for Figure 2 Cross-sectional view of the medium vibratory compactor (State 1); Figure 10 for Figure 2 Cross-sectional view of the vibratory compactor AA (state two).

[0018] The components are: 1. Vibrating device; 2. Screed frame; 3. Screed front plate; 4. Vibrating frame; 5. Eccentric flange; 6. Eccentric assembly; 7. Second mounting base; 8. First mounting base; 9. Eccentric shaft; 13. Driver; 14. Eccentric sleeve; 15. Spring; 16. Limiting sleeve; 17. Limiting pin; 18. Screw; 19. Fixed section; 20. Eccentric section; 21. Outer circle mating surface; 22. Inner hole mating surface; 23. Inner hole mounting surface; 24. Outer end face; 25. Outer circle contour surface; 26. Through hole; 27. Third cylinder; 28. Second conical surface; 29. ​​Fixed base; 30. First blind hole; 31. Second blind hole; 32. Outer circle mounting surface; 33. Inner hole fixing surface; 34. Outer circle claw-shaped surface; 35. First cylinder; 36. Second cylinder; 37. First conical surface. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0020] like Figure 1 and Figure 2 As shown, this application discloses a vibrating device 1, which is installed on a screed frame 2. The screed frame 2 is provided with a screed front plate 3. The vibrating device 1, the screed frame 2 and the screed front plate 3 are fixed in pairs. The screed frame 2 and the screed front plate 3 form a limiting interval, and a vibrating frame 4 is provided in this interval. The vibrating device 1 includes an eccentric shaft 9, an eccentric assembly 6 and an eccentric flange 5. The vibrating device 1 is symmetrically installed on the screed frame 2. The following description focuses on the installation structure at one end. The eccentric shaft 9 is rotatably mounted on the screed frame 2 via the first mounting seat 8; the eccentric assembly 6 is connected to the vibrating frame 4 via the second mounting seat 7, and the eccentric section 20 of the eccentric shaft 9 is movably connected to the eccentric assembly 6; the eccentric flange 5 is fixedly connected to the end of the eccentric shaft 9 by bolts; wherein, the eccentric assembly 6 is provided with a positioning part, and the eccentric flange 5 is provided with two connecting parts, the positioning part is telescopically connected to either connecting part, and the installation angle of the eccentric shaft 9 and the eccentric assembly 6 is switched to realize the amplitude adjustment. For detailed discussion, please refer to the paper "Dynamic Analysis and Application of Paver Vibrator - Wang Runbao".

[0021] In use, by driving the positioning part away from the connecting part, the eccentric shaft 9 is rotated to complete the connection part and positioning part in another position for installation. At this time, the installation angle of the eccentric shaft 9 and the eccentric assembly 6 is changed, so that the amplitude of the entire vibrating device 1 changes during operation. Unlike the traditional method of frequently disassembling and assembling the eccentric sleeve 14 and the eccentric shaft 9 manually, which is very cumbersome, consumes a lot of manpower, and has the risk of inconsistent adjustment.

[0022] In some embodiments, the vibrating device 1 is specifically designed as follows; As attached Figures 3 to 5 As shown, the eccentric shaft 9 in this embodiment includes a fixed section 19 and an eccentric section 20 connected axially. The eccentric section 20 is symmetrically installed on both sides of the fixed section 19, and the eccentric sections 20 at both ends have a first eccentricity relative to the fixed section 1919 in the middle. In this embodiment, the eccentric assembly 6 includes an eccentric sleeve 14 and a retractable limiting pin 17. The eccentric sleeve 14 is rotatably connected to the eccentric section 20 of the eccentric shaft 9. A limiting sleeve 16 is provided radially on the eccentric sleeve 14. The limiting pin 17 is elastically installed in the cavity of the limiting sleeve 16 by a spring 15. The eccentric sleeve 14 is provided with a through hole 26. The eccentric flange 5 is provided with two blind holes radially. The limiting pin 17 passes through the through hole 26 and engages with any of the blind holes, thereby realizing the switching of the installation angle of the eccentric shaft 9 and the eccentric sleeve 14. The adjustment is precise and efficient.

[0023] In a further embodiment, the preload force on the limiting pin 17 can be adjusted; a screw 18 is threaded onto the limiting sleeve 16, one end of the spring 15 abuts against the screw 18, and the other end is fixedly connected to the limiting pin 17. By rotating the screw 18, the installation space of the spring 15 can be adjusted. The smaller the space, the greater the preload force achieved by the spring 15. The preload force is directly proportional to the size of the space. It is worth noting that when the eccentric shaft 9 is working, the constraint force (preload force) of the spring 15 is sufficient to limit the limiting pin 17 from leaking out of the blind hole, ensuring the normal and stable operation of the device.

[0024] The blind holes here are the first blind hole 30 and the second blind hole 31. The first blind hole 30 and the second blind hole 31 are arranged linearly on the eccentric flange 5. In practice, the number and position of blind holes can be divided according to the design and usage requirements. For example, they can be arranged in a circumferential array.

[0025] The second mounting base 7 is equipped with a driver 13 via a fixed base 29. The driver 13 is provided with a telescopic driving member. The driving member and the limiting pin 17 are arranged at 90 degrees in space. The driving member is provided with a driving surface, and the positioning part is provided with a driven surface. The driving member drives the driving member to extend, so that the driving surface presses against the driven surface, thereby realizing the contraction of the positioning part.

[0026] For details, see attached. Figure 8As shown, the telescopic rod of the driving component is a third cylinder 27, and a second conical surface 28 is provided on the end of the third cylinder 27 that is away from the main body, as shown in the attached figure. Figure 5 As shown, the diameter of the limiting pin 17 is gradually changing. It has a first cylinder 35 with a larger diameter, a second cylinder 36 with a smaller diameter, and a first conical surface 37 between the two. In use, the second conical surface 28 in the driving component extends to contact the first conical surface 37. During continuous operation, the second cylinder 36 is moved upward away from the first blind hole 30. When the eccentric shaft 9 is rotated and the second blind hole 31 and the second cylinder 36 are aligned, the driving component retracts. Under the action of the spring 15, the second cylinder 36 enters the second blind hole 31, completing the adjustment of the installation angle of the eccentric shaft 9 and the eccentric sleeve 14.

[0027] As attached Figure 3 , Figure 6 and Figure 7 As shown, during the assembly of the relevant parts, the eccentric sleeve 14 includes an outer circle mating surface 21, an inner hole mating surface 22, an inner hole mounting surface 23, an outer end face 24, and an outer circle contour surface 25. The outer circle contour surface 25 and the outer circle mating surface 21 are concentric, the inner hole mating surface 22 and the inner hole mounting surface 23 are concentric, and the two sets of centers have a second eccentricity. The outer circle mating surface 21 is concentric with the fixed section 19. The first mounting base 8 is installed at both ends of the fixed section 19 in the middle of the eccentric shaft 9 and can rotate around its center; the second mounting base 7 is installed on the outer circular mating surface 2121 and can rotate around its center; the inner hole mating surface 22 of the eccentric sleeve 14 is installed on the eccentric sections 2020 at both ends of the eccentric shaft 9. The eccentric flange 5 includes an outer claw-shaped surface 34, an outer mounting surface 32, and an inner hole fixing surface 33. The outer claw-shaped surface 34 is concentric with the fixing section 19 of the eccentric shaft 9, the inner hole fixing surface 33 is concentric with the eccentric section 20 of the eccentric shaft 9, and the outer mounting surface 32 is concentric with the inner hole mounting surface 23 of the eccentric sleeve 14.

[0028] In some embodiments, numbers corresponding to the amplitude of the vibrating device 1 are engraved on the outer end face 24 of the eccentric sleeve 14 at the locations corresponding to the first blind hole 30 and the second blind hole 31.

[0029] In practical use, in the vibrating device 1, the amplitude is set to non-zero. When the vibrating device 1 is working, the eccentric shaft 9 begins to rotate towards the front plate 3 of the screed. At this time, the third cylinder 27 of the driving component of the driver 13 is fully retracted, the first blind hole 30 of the eccentric flange 5 is concentric with the through hole 26 of the eccentric sleeve 14, and the smaller diameter second cylinder 36 of the limiting pin 17 slides into the bottom of the first blind hole 30 (see Appendix). Figure 9When the eccentric shaft 9 rotates, the eccentric section 20 of the eccentric shaft 9 and the eccentric assembly 6 rotate together around the center of the fixed section 19 of the eccentric shaft 9, and the second mounting seat 7 oscillates periodically, which drives the vibrating frame 4 to move up and down to compact the material; at this time, the working state of the vibrating device 1 is the first working state, and the rotation direction of the eccentric shaft 9 is the first working direction.

[0030] When the amplitude of the vibrating device 1 needs to be adjusted, the eccentric shaft 9 stops rotating, and the third cylinder 27 of the drive component of the driver 13 extends fully (e.g., Figure 9 Under external force, the vibrating device 1 drives the eccentric flange 5 to rotate the eccentric shaft 9 in the opposite direction. After rotating a certain angle, when the surface of the third cylinder 27 is tangent to the first conical surface 37 of the limiting pin 17, the spring 15 is compressed until the first cylinder 35 with a smaller diameter of the limiting pin 17 is completely disengaged from the first blind hole 30 of the eccentric flange 5 (see Appendix). Figure 10 When the limiting pin 17 stops its axial displacement, the eccentric section 20 of the eccentric shaft 9 rotates relative to the eccentric assembly 6. When the second blind hole 31 of the eccentric flange 5 is concentric with the through hole 26 of the eccentric sleeve 14, the third cylinder 27 of the driving component is fully retracted, and the limiting pin 17 is reset under the push of the spring 15, entering the bottom of the second blind hole 31 of the eccentric flange 5, thus completing the adjustment of the amplitude of the vibrating device 1. When the eccentric shaft 9 continues to rotate in the first working direction, the working state of the vibrating device 1 at this time is called the second working state.

[0031] Compared to the first working state of the vibratory compactor 1, the angular difference formed by the rotation of the eccentric segment 20 of the eccentric shaft 9 relative to the eccentric assembly 6 determines the amplitude of the vibratory compactor 1. The amplitude of the vibratory compactor 1 is the vector sum of the eccentricity of the eccentric shaft 9 and the eccentricity of the eccentric assembly 6. In actual construction, the system control driver 13 extends and retracts, controlling the rotation direction and angle of the eccentric shaft 9. The operator can select the amplitude as needed to meet the construction requirements. In practical applications, especially for wide-width construction requiring the interconnection of unequal numbers of vibratory compactors 1, or for dual vibratory compactors 1 with variable amplitude vibration combinations, it can be quickly switched to a single vibratory compactor 1 to adapt to rapid changes in construction conditions.

[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A vibrating device (1), characterized in that, include An eccentric shaft (9) is rotatably mounted on the ironing board frame (2) via a first mounting base (8); An eccentric assembly (6) is connected to a vibrating frame (4) via a second mounting base (7). The vibrating frame (4) is placed within the limiting range of the ironing plate frame (2). The eccentric section (20) of the eccentric shaft (9) is movably connected to the eccentric assembly (6). An eccentric flange (5) is fixedly connected to the end of the eccentric shaft (9); The eccentric assembly (6) is provided with a positioning part, and the eccentric flange (5) is provided with multiple connecting parts. The positioning part is telescopically connected to any of the connecting parts, and the installation angle of the eccentric shaft (9) and the eccentric assembly (6) is switched to realize amplitude adjustment.

2. The vibrating device (1) according to claim 1, characterized in that, The eccentric assembly (6) includes an eccentric sleeve (14) and a retractable limiting pin (17). The eccentric sleeve (14) is rotatably connected to the eccentric section (20) of the eccentric shaft (9). The eccentric sleeve (14) is provided with a limiting sleeve (16) in the radial direction. The limiting pin (17) is elastically installed in the cavity of the limiting sleeve (16) by a spring (15). The eccentric sleeve (14) is provided with a through hole (26). The eccentric flange (5) is provided with multiple blind holes in the radial direction. The limiting pin (17) passes through the through hole (26) and engages with any of the blind holes.

3. The vibrating device (1) according to claim 2, characterized in that, The preload of the limiting pin (17) can be adjusted; The limiting sleeve (16) is threaded with a screw (18). One end of the spring (15) abuts against the screw (18), and the other end is fixedly connected to the limiting pin (17). Rotating the screw (18) adjusts the installation space of the spring (15).

4. The vibrating device (1) according to claim 2, characterized in that, Several of the blind holes are arranged in a circular row on the eccentric flange (5).

5. The vibrating device (1) according to claim 2, characterized in that, When the eccentric shaft (9) is working, the constraint force of the spring (15) satisfies the requirement to prevent the limiting pin (17) from protruding from the blind hole.

6. The vibrating device (1) according to claim 1, characterized in that, The second mounting base (7) is provided with a driver (13), the driver (13) is provided with a telescopic driving member, the driving member is provided with a driving surface, the positioning part is provided with a driven surface, the driving member drives the driving member to extend, so that the driving surface squeezes the driven surface, thereby realizing the shrinking of the positioning part.

7. The vibrating device (1) according to claim 1, characterized in that, The eccentric flange (5) is provided with an outer circular claw-shaped surface (34), an outer circular mounting surface (32), and an inner hole fixing surface (33); the eccentric shaft (9) includes a fixed section (19) and an eccentric section (20) that are axially connected. The outer circular claw-shaped surface (34) is concentric with the fixed section (19), and the inner hole fixed surface (33) is concentric with the eccentric section (20).

8. The vibrating device (1) according to claim 7, characterized in that, The eccentric sleeve (14) is provided with an outer circle mating surface (21), an inner hole mating surface (22), an inner hole mounting surface (23), an outer end face (24), and an outer circle contour surface (25). The outer circular contour surface (25) and the outer circular mating surface (21) are concentric, the inner hole mating surface (22) and the inner hole mounting surface (23) are concentric, the outer circular mating surface (21) and the fixed section (19) are concentric, and the eccentric section (20) and the inner hole mating surface (22) are mounted.

9. The vibrating device (1) according to claim 1, characterized in that, The ironing board frame (2) is provided with an ironing board front plate (3), and the ironing board front plate (3) and the ironing board frame (2) form a limiting range.

10. A paver, characterized in that, Includes the vibrating device (1) as described in any one of claims 1 to 9.

Images