Adjustable mass eccentric for multi-amplitude vibration mechanism of a compactor and systems and methods thereof

Abstract

An adjustable mass eccentric for a multi-amplitude vibration mechanism can include a body and an interior cavity defined by the body such that the body encloses the interior cavity. The interior cavity can include a first section, a second section, and a third section between the first section and the second section. The third section can define a volume and / or area that is less than the respective volumes and / or areas of the first section and the second section of the interior cavity. A filler material can be provided in the interior cavity and can migrate to and from the first, second, and third sections based on rotational movement of the body and interior cavity.

Description

Technical Field

[0001] This invention relates to providing vibrations of different amplitudes for a compactor, and more particularly to an adjustable mass eccentric element, system, and method thereof for a multi-amplitude vibration mechanism for a compactor. Background Technology

[0002] Traditional vibratory eccentric components use pellets within an internal cavity to alter the eccentricity of the eccentric shaft. The pellets can rotate in a first direction of rotation to increase the eccentricity, and in a second direction to decrease it. However, when rotating in opposite directions, this type of vibratory eccentric component operates only at two different amplitudes.

[0003] On the other hand, patent document CN 103495539 (“CN'539 patent document”) describes an eccentric component comprising a liquid storage portion located at the center of the eccentric device and eccentric portions located at both ends of the eccentric device, wherein the liquid storage portion is connected to these eccentric portions via liquid delivery channels of different widths. According to CN'539 patent document, the amplitude of the eccentric component can be automatically adjusted by the change in inertial force with rotational speed. However, CN'539 patent document may not describe providing different amplitudes based on different rotational directions. Summary of the Invention

[0004] In one aspect, the present invention describes an adjustable mass eccentric member for a compactor. The adjustable mass eccentric member may include: a body; an eccentric convex angle extending from one side of the body; and an internal cavity defined by the body such that the body completely surrounds the internal cavity. The internal cavity may include a first segment, a second segment, and a third segment between the first and second segments, the third segment defining a volume smaller than the respective volumes of the first and second segments. The first and second segments may taper toward the third segment, and the eccentric convex angle may be arranged closer to the second segment than the first and third segments.

[0005] In another aspect, the present invention describes a method. The method may include: providing a rotatable shaft for a vibration mechanism of a vibrating roller; and providing an adjustable mass eccentric member along the rotatable shaft of the vibration mechanism of the vibrating roller. The adjustable mass eccentric member may include: a body, an internal cavity defined by the body such that the body surrounds the internal cavity, and a filling material disposed in the internal cavity. The internal cavity may have a first segment, a second segment, and a third segment between the first segment and the second segment. The first segment may define a first region in a cross-sectional view of the body, the second segment may define a second region in a cross-sectional view of the body, and the third segment may define a third region in a cross-sectional view of the body, the first and second regions being larger than the third region. The vibration mechanism may be configured to cause the vibrating roller to vibrate with three or more individual amplitudes based on rotational control of the rotatable shaft and selective placement of the filling material in the first or second segment of the internal cavity.

[0006] In yet another embodiment, a vibratory compaction machine is described. The vibratory compaction machine may include: a chassis; rollers rotatably connected to the chassis; control circuitry; and a vibration mechanism including a rotatable shaft and an adjustable mass eccentric member provided along the rotatable shaft, the vibration mechanism being configured to vibrate the rollers at three or more individual amplitudes under the control of the control circuitry. The adjustable mass eccentric member may have a body, an eccentric convex angle extending from a first side of the body, the eccentric convex angle and the body being integrally formed, an internal cavity defined by the body such that the body completely surrounds the internal cavity, and a filling material disposed within the internal cavity. The internal cavity may have a first segment, a second segment, and a third segment between the first segment and the second segment, wherein the third segment of the internal cavity may have a portion therein at the central longitudinal axis of the rotatable shaft. The first segment may define a first region in a cross-sectional view of the body, the second segment may define a second region in a cross-sectional view of the body, and the third segment may define a third region in a cross-sectional view of the body, wherein the second region may be larger than the first region, and the first region may be larger than the third region. The eccentric convex angle may be adjacent to the second segment of the internal cavity and radially outward therefrom. The vibration mechanism may be configured to cause the cylindrical roller to vibrate at three or more individual amplitudes based on rotational control of the rotatable shaft and the position of the filling material within the internal cavity, under the control of the control circuit.

[0007] Other features and aspects of the invention will become apparent from the following description and accompanying drawings. Attached Figure Description

[0008] Figure 1 It is a side view of a compactor according to one or more embodiments of the disclosed subject matter.

[0009] Figure 2 yes Figure 1 A cross-sectional view of the rollers of the compactor.

[0010] Figure 3 It is a cross-sectional view of an adjustable mass eccentric member adapted to induce vibrations according to one or more embodiments of the disclosed subject matter in a vibration mechanism that is suitable for generating vibrations according to a first amplitude.

[0011] Figure 4 It is suitable for inducing vibrations according to one or more embodiments of the disclosed subject matter, based on a second amplitude. Figure 3 A cross-sectional view of an adjustable mass eccentric component.

[0012] Figure 5 It is suitable for inducing vibrations according to one or more embodiments of the disclosed subject matter, based on a third amplitude. Figure 3 A cross-sectional view of an adjustable mass eccentric component.

[0013] Figure 6 It is a flowchart of a method according to one or more embodiments of the disclosed subject matter. Detailed Implementation

[0014] This invention relates to an adjustable mass eccentric component, system, and method thereof for a multi-amplitude vibration mechanism for a compactor.

[0015] Figure 1 This is a side view of a vibratory compactor or vibratory compaction machine 100 according to one or more embodiments of the present invention. Generally, the vibratory compactor 100 can increase the density of the underlying compactable material 10, such as asphalt, soil, or gravel.

[0016] The vibratory compactor 100 may include a chassis or frame 106, an engine 108, a first pump 110, a second pump 112, a first motor 114, a second motor 116, and at least one roller, such as a first roller 102 and a second roller 104. The vibratory compactor 100 may also include a controller or control circuit 122, which may be or include a processor or processing circuitry (including memory), and a user interface 124.

[0017] The user interface 124, which may include or include a control panel, may include user or operator input, such as switches, touchscreens, etc., accessible to the user to operate the vibratory compactor 100. Typically, the user interface 124 can provide user input to control the travel speed and direction (forward or backward and turning) of the vibratory compactor 100. The user interface 124 can also provide user input to control or set the amplitude of each of the first roller 102 and the second roller 104 from at least three amplitudes. Input at the user interface 124 can be provided to the controller 122 to control the operation of various components of the vibratory compactor 100, such as the engine 108, the first pump 110, the second pump 112, the first motor 114, and the second motor 116.

[0018] according to Figure 1 The example shown may include a first roller 102 and a second roller 104, but in an alternative embodiment, the vibratory compactor 100 may include only one roller, such as the first roller 102. Since each roller, such as the first roller 102 and the second roller 104, can increase the density of the underlying compactable material 10, the rollers according to embodiments of the disclosed subject matter may be referred to as compacting or compaction rollers.

[0019] Each of the first roller 102 and the second roller 104 can be rotatably mounted or coupled to the frame 106, such that the first roller 102 and the second roller 104 can rotate clockwise or counterclockwise depending on the direction of travel of the vibratory compactor 100 (i.e., forward or backward, respectively). One or both of the first roller 102 and the second roller 104 may be cylindrical or cylindrical in form, but the rollers according to embodiments of the disclosed subject matter are not limited in geometric configuration. Furthermore, according to embodiments of the disclosed subject matter, the rollers may be referred to as drums.

[0020] Vibration or a vibration mechanism or component can be provided for one, some, or all of these rollers. Each such roller can be referred to as a vibrating roller. For example, Figure 1 A first vibration mechanism 118 associated with the first roller 102 and a second vibration mechanism 120 associated with the second roller 104 are shown.

[0021] Frame 106 can accommodate engine 108, and engine 108 can be operatively connected to drive a first pump 110 and a second pump 112, each of which can be a fluid (e.g., hydraulic) pump. Second pump 112 can be operatively connected via conduits, valves, etc., to a first motor 114 and a second motor 116. Therefore, first motor 114 and second motor 116 can be fluid (e.g., hydraulic) motors. First pump 110 can be operatively connected via conduits, valves, etc., to a corresponding third motor 117 of first roller 102 and second roller 104 (see [link]). Figure 2 (), so that the first roller 102 and the second roller 104 rotate.

[0022] Reference Figure 2 , Figure 2 It is the first roller 102 along Figure 1 As shown in the cross-sectional view of line 2, the first roller 102 may include a first vibration mechanism 118. The second roller 104 may be the same as or similar to the first roller 102.

[0023] The first vibration mechanism 118 may include a shaft 202, a first vertical support 204, and a second vertical support 206. The shaft 202, which may be made of metal or a metallic material (e.g., steel or ductile iron), may have a first end 208 and a second end 210 opposite to the first end 208. The first end 208 and the second end 210 may pivot relative to and be supported by the first vertical support 204 and the second vertical support 206, respectively. Specifically, the first end 208 and the second end 210 may be positioned within a first bearing 212 and a second bearing 214, respectively. The first bearing 212 and the second bearing 214 may be accommodated within a first bracket 216 and a second bracket 218, respectively. The first bracket 216 and the second bracket 218 may be attached to and supported by the first vertical support 204 and the second vertical support 206, respectively. Therefore, the shaft 202 may be supported by the first vertical support 204 and the second vertical support 206 at the first end 208 and the second end 210, respectively.

[0024] The first end 208 of shaft 202 can also be connected to a first connector 220. This first connector 220 can be connected to the first motor 114, as shown in… Figure 2 This is schematically illustrated. Specifically, the first connector 220 can transmit the rotational movement of the first motor 114 to the shaft 202 in either direction to rotate the shaft 202 in the corresponding direction. Clearly, the shaft 202 can rotate clockwise and counterclockwise. Therefore, the first motor 114 can control the movement of the first vibration mechanism 118, and thus control the vibration of the first vibration mechanism 118. As will be discussed in more detail below, the controller 122, in response to input at the user interface 124, can control the rotational speed and direction of the shaft 202 by controlling the first motor 114. One or more position sensors, such as encoders, can be provided relative to the shaft 202 to determine the rotational position and optionally the rotational speed of the shaft 202 (and its corresponding components).

[0025] The third motor 117 can be operatively connected to the first roller 102 via the second connector 222. Therefore, the third motor 117 can be connected to the first roller 102 to rotate the first roller 102 clockwise or counterclockwise. In response to input at the user interface 124, the controller 122 can control the rotational speed and direction of the first roller 102 by controlling the third motor 117. The rotation of the first roller 102 (and the second roller 104) can propel the vibratory compactor 100 forward or backward depending on the rotational directions of the first and second rollers 102 and 104. Furthermore, the operation of the third motor 117 can be independent of the operation of the first motor 114 and the second motor 116. Therefore, the first roller 102 and the second roller 104 can be controlled to rotate without the shaft 202 of the first roller 102 and / or the second roller 104 rotating. Similarly, the shaft 202 of the first roller 102 and / or the second roller 104 can be controlled to rotate without the first roller 102 and the second roller 104 rotating.

[0026] Shaft 202 may include an eccentric weight or mass 300. The eccentric mass 300 may extend or protrude from one side or a portion of shaft 202. Optionally, the eccentric mass 300 may be formed as a single piece or integral with shaft 202. According to one or more embodiments, the eccentric mass 300 may be centered along the length of shaft 202, for example... Figure 2 As shown. Furthermore, the eccentric mass block 300 can be spaced apart from the first end (of the first end 208) and the second end (of the second end 210) of the shaft 202, as... Figure 2 As shown. Alternatively, the eccentric mass block 300 may extend the entire length of the shaft 202. Because the eccentric mass block 300 extends from the side or lateral portion of the shaft 202, the eccentric mass block 300 may provide or add an asymmetric mass to the shaft 202 relative to a line XX corresponding to the longitudinal axis X of the shaft 202.

[0027] When shaft 202 rotates, the rotation of the asymmetric offset block provided by eccentric mass block 300 can result in a net centrifugal force. That is, the rotation of shaft 202 can generate centrifugal force based on eccentric mass block 300. At a certain rotational speed, shaft 202 of the first vibration mechanism 118 can obtain an operating frequency and begin to vibrate due to the net centrifugal force. The vibration of shaft 202 can induce a vibrational force on the first roller 102 through the first vertical support 204 and the second vertical support 206. Therefore, the rotation of shaft 202 can induce a vibrational force in the first roller 102. Furthermore, the vibration of the first roller 102 can cause the first roller 102 to compact the compacted material 10. Optionally, a damping pad (e.g., a rubber pad) 224 can be provided to isolate the first vibration mechanism 118 from the frame 106.

[0028] In more detail, the vibration characteristics of the first vibration mechanism 118, particularly its amplitude, can be based on the configuration of the eccentric mass block 300. In some cases, the rotational directions of the shaft 202 and the eccentric mass block 300 can also affect the amplitude of the first vibration mechanism 118. Alternatively, the vibration characteristics of the first vibration mechanism 118 can also be based on the rotational speed or velocity of the shaft 202 and the eccentric mass block 300.

[0029] Figure 3-5 Cross-sectional views of an eccentric mass block 300 in different amplitude configurations according to embodiments of the disclosed subject matter are shown.

[0030] The eccentric mass 300 may include a body 302 that defines an internal cavity 310. The body 302 of the eccentric mass 300 may define the internal cavity 310 such that the body 302 completely surrounds the internal cavity 310. The body 302 may be solid except for the internal cavity 310 and may be made of metal or a metallic material (e.g., steel or ductile iron). The body 302 may be formed as a single piece or as a unit, optionally included as part of the shaft 202. Thus, the internal cavity 310 may be cut or machined from the body 302, or alternatively, formed using additive manufacturing techniques. Alternatively, according to one or more embodiments, the body 302 may have, include, or otherwise attach to opposing end plates that define end walls of the internal cavity 310 in a longitudinal direction along the longitudinal axis X of the shaft 202.

[0031] The eccentric protrusion 305 may extend from the side or lateral portion of the body 302. Optionally, the eccentric protrusion 305 may be integrally formed with the body 302 or formed as a single piece with the body 302. Therefore, the eccentric protrusion 305 may be made of the same material as the body 302 (e.g., steel or ductile iron).

[0032] The internal cavity 310 may include a first segment 312, a second segment 322, and a third segment 332. For example... Figure 3-5 As shown, the third segment 332 may be located between the first segment 312 and the second segment 322. Optionally, the third segment 332 may have a portion thereon at the longitudinal axis X of shaft 202. According to one or more embodiments, the internal cavity 310 may consist of only three segments, such as the first segment 312, the second segment 322, and the third segment 332. That is, according to one or more embodiments, the internal cavity 310 may have only three segments. Alternatively, embodiments of the disclosed subject matter may include, for example, more than three segments, and may include another segment communicating with the third segment 332, or alternatively, not communicating with any of the segments of the first segment 312, the second segment 322, and the third segment 332. Such segments may be provided to provide one or two additional amplitudes for the first vibration mechanism 118.

[0033] A filling material 400 can be provided in the internal cavity 310. The filling material 400 can be a metal or metal component capable of moving or flowing between the first section 312, the second section 322, and the third section 332, such as shot, steel ball, metal block, liquid metal, or sand, or some other liquid, such as water. As will be discussed in more detail below, the filling material 400 can move in a controlled manner between the first section 312, the second section 322, and the third section 332 based on the rotation of the internal cavity 310 corresponding to the rotation of the shaft 202 (and the body 302).

[0034] In one or more cross-sectional views, the internal cavity 310 may take the shape of an hourglass or approximately an hourglass, for example... Figure 3-5 As shown. Therefore, the first segment 312 and / or the second segment 322 may taper or converge toward the third segment 332 and optionally converge to the third segment 332.

[0035] For example, such as Figure 3-5 As shown, the first segment 312, the second segment 322, and the third segment 332 can have different sizes and shapes. For example, the first segment 312 can define a first region in a cross-sectional view, the second segment 322 can define a second region in a cross-sectional view, and the third segment 332 can define a third region in a cross-sectional view of the main body. The second region may be larger than the first region, and the first region may be larger than the third region. Additionally or alternatively, the first segment 312 can define a first volume, the second segment 322 can define a second volume, and the third segment 332 can define a third volume, wherein the second volume is larger than the first volume and the first volume is larger than the third volume. Alternatively, the first segment 312 and the second segment 322 can have the same or substantially the same cross-sectional area and / or volume.

[0036] The first segment 312 and / or the second segment 322 may be asymmetrical or symmetrical in the cross-sectional view of the eccentric mass block 300. For example, Figure 3-5 A symmetrical first segment 312 is shown, while the second segment 322 is asymmetrical. Optionally, the first segment 312 and the second segment 322 may have corresponding first and second curved outer radial walls. Figure 3-5 As shown, the first curved outer radial wall of the first segment 312 may have a first arc with a length less than that of the second curved outer radial wall of the second segment 322.

[0037] Each of the first segment 312 and the second segment 322 may have one or two assemblies adapted to grip and hold the filler material 400 when the eccentric mass block 300 rotates in a particular direction and the filler material 400 is in the corresponding first segment 312 or second segment 322. For example, the first segment 312 may have a first filler material assembly 314 and a second filler material assembly 316. Similarly, the second segment 322 may have a first filler material assembly 324 and a second filler material assembly 326.

[0038] like Figure 3-5 As shown, the first filler material assembly 314 and the second filler material assembly 316 of the first segment 312 may be located at opposite corners of the first segment 312, such as outer radial corners. Similarly, the first filler material assembly 324 and the second filler material assembly 326 of the second segment 322 may be located at opposite corners of the second segment 322, such as outer radial corners. The first and second filler material assemblies 314 and 316 of the first segment 312 may be referred to herein as a first pair or a first group of filler material assemblies, and the first and second filler material assemblies 324 and 326 of the second segment 322 may be referred to herein as a second pair or a second group of filler material assemblies.

[0039] The eccentric convex angle 305 can be positioned relative to the first segment 312 and the second segment 322. According to one or more embodiments, the eccentric convex angle 305 can be disposed on the side of the body 302 associated with the second segment 322 of the internal cavity 310. For example, the eccentric convex angle 305 can be positioned closer to the second segment 322 of the internal cavity 310 than the third segment 332 and the first segment 312. Although Figure 3-5 The eccentric convex angle 305 is shown to be located on the side of the body 302 closer to the second segment 322, but in this embodiment, the segment has the largest cross-sectional area of ​​the three segments, or the eccentric convex angle 305 may be located on the side of the body 302 closer to the first segment 312, which in this embodiment has a cross-sectional area smaller than that of the second segment 322.

[0040] Optionally, the eccentric convex angle 305 can be arranged adjacent to the second segment 322 and radially outward therefrom, such as Figure 3-5 As shown. In this respect, the eccentric convex angle 305 may partially overlap or cover the second curved outer radial wall of the second segment 322, as... Figure 3-5As shown. In this respect, the first filler material assembly 324 of the second segment 322 may be adjacent to, overlap with, and / or aligned with the eccentric convex corner 305, while the second filler material assembly 326 of the second segment 322 may not be adjacent to, overlap with, and / or aligned with the eccentric convex corner 305. Alternatively, the eccentric convex corner 305 may completely overlap with or cover the second curved outer radial wall of the second segment 322. The first segment 312 of the internal cavity 310 may be characterized in that it is not adjacent to, overlap with, and / or aligned with the eccentric convex corner 305.

[0041] The first vibration mechanism 118 can be configured to vibrate the first roller 102 with three or more individual amplitudes, at least based on the placement of the filling material 400 and the rotational direction of the internal cavity 310 (together with the body 302 and the shaft 202). Therefore, the eccentric mass block 300 can be characterized as adjustable weight or eccentricity.

[0042] Each segment of the internal cavity 310, except for the third segment 332 or a similar filling material "transfer" segment, may be associated with one or two different amplitudes, depending on the configuration of that particular segment (i.e., area, geometry, volume, etc.). See, for example, Figure 3-5 The eccentric mass block 300 has a first segment 312 that can be associated with a first amplitude, and a second segment 322 that can be associated with a second and a third amplitude. Furthermore, because the first segment 312 can be symmetrical, it can be associated with only one amplitude. The second segment 322 is positioned closer to the eccentric convex angle 305, and the second and third amplitudes can be greater than the first amplitude associated with the first segment 312.

[0043] More specifically, regarding Figure 3-5 , Figure 3 An example corresponding to the first amplitude, Figure 4 An example corresponding to the second amplitude, and Figure 5 An example corresponding to the third amplitude, where the second amplitude is greater than the first amplitude and the third amplitude is greater than the second amplitude.

[0044] exist Figure 3 In order to generate the first amplitude, a filler material 400 can be provided in the first segment 312, and then the internal cavity 310 is rotated clockwise. The filler material 400 can be pressed against the first filler material assembly 314, particularly the corner between the curved outer radial wall of the first segment 312 and the inwardly extending sidewall of the tail (depending on the direction of rotation) forming the first filler material assembly 314, such as... Figure 3As shown. Based on the positioning of the filling material 400 relative to the eccentric convex angle 305 (i.e., opposite to the eccentric convex angle 305) and the rotation of the internal cavity 310 (and the shaft 202 and the body 302), the eccentric mass block 300 can vibrate with a first amplitude. Since the first segment 312 is symmetrical in the cross-sectional view, although the above description specifies clockwise rotation, the first amplitude can also be provided by counterclockwise rotation.

[0045] exist Figure 4 In order to generate a second amplitude, a filler material 400 can be provided in the second segment 322, and then the internal cavity 310 is rotated clockwise. The filler material 400 can be pressed against the second filler material assembly 326 of the second segment 322, particularly the corner between the curved outer radial wall of the second segment 322 and the inwardly extending sidewall of the tail (depending on the direction of rotation) forming the second filler material assembly 326, such as... Figure 4 As shown. Because the filling material 400 is offset from the eccentric convex angle 305, the rotation of the internal cavity 310 (as well as the shaft 202 and the body 302) can cause the eccentric mass block 300 to vibrate with a second amplitude.

[0046] exist Figure 5 In order to generate a third amplitude, i.e., the highest available amplitude of the eccentric mass block 300, the filler material 400 can be disposed in the second section 322, and then the internal cavity 310 is rotated counterclockwise. The filler material 400 can be pressed against the first filler material assembly 324 of the second section 322, particularly the corner between the curved outer radial wall of the second section 322 and the inwardly extending sidewall of the tail (according to the direction of rotation) forming the first filler material assembly 324, such as... Figure 5 As shown. Because the filling material 400 is aligned with the eccentric convex angle 305, the rotation of the internal cavity 310 (as well as the shaft 202 and the body 302) can cause the eccentric mass block 300 to vibrate with a third amplitude.

[0047] Industrial applicability

[0048] As described above, the present invention relates to an adjustable mass eccentric element, system, and method thereof for a multi-amplitude vibration mechanism for a compactor.

[0049] Embodiments of the disclosed subject matter may relate to an eccentric weight or eccentric mass block having an internal cavity, such as eccentric mass block 300, the cavity having two or more amplitude-affected sections, each of which may provide one or two different amplitudes based on the rotational direction of a corresponding shaft, such as shaft 202. Thus, embodiments of the disclosed subject matter may provide three or more (e.g., three to six) individually selectable amplitudes at which their operating vibrating rollers, such as first roller 102 and / or second roller 104, operate. Filler material, such as filler material 400, may flow under gravity and within a specific section via the rotational direction to or otherwise transfer from different sections to a location in the internal cavity 310 to provide one of three or more different amplitudes for shaft 202 during operating rotational speeds. Individual amplitudes may be selected via user input at a user interface (e.g., a user interface of compaction machine 100, such as user interface 124).

[0050] Turn Figure 6 , Figure 6 This is a flowchart of a method 600 according to one or more embodiments of the disclosed subject matter.

[0051] Method 600 may be implemented with respect to, or by, a machine according to an embodiment of the disclosed subject matter, such as vibratory compactor 100. The control portion of method 600 may be implemented using a non-transitory computer-readable storage medium storing computer-readable instructions that, when executed by one or more computers (e.g., controller 122), cause one or more computers to perform method 600, or, as appropriate, portions thereof.

[0052] In S602, method 600 may include providing a vibration mechanism, such as a first vibration mechanism 118, or a portion thereof, such as a shaft 202, which may include an adjustable weight or mass eccentricity, such as an eccentric mass block 300. The vibration mechanism may be provided to contact rollers (e.g., first roller 102 and / or second roller 104) in a vibratory compactor (e.g., vibratory compactor 100).

[0053] In S604, method 600 may include setting an amplitude from at least three amplitudes of operating the first roller 102 and / or the second roller 104. This setting may be performed in response to user input at user interface 124, for example, the user input may provide one or more corresponding signals to controller 122 for controlling components necessary to operate shaft 202 at the desired amplitude, such as the second pump 112, the first motor 114, and the second motor 116 if the second roller 104 is also operated at the desired amplitude. Alternatively, this control input may be received from a controller outside the vibratory compactor 100, or in the case of an autonomous vibratory compactor 100, in response to sensor or programmed commands regarding operation. Optionally, in the case of the first vibration mechanism 118 and the second vibration mechanism 120, the corresponding set amplitudes may be the same or different. The setting in S604 may be performed when the vibratory compactor 100 stops or moves back and forth.

[0054] When a command to set the amplitude is received, it may be necessary to control shaft 202 to configure the eccentric mass block 300 to provide the desired amplitude based on the state of shaft 202 (e.g., rotating or not rotating, rotation speed, rotation direction, orientation of the internal cavity 310) and the current position of the filler material 400 in the internal cavity 310. Information about the position of the filler material 400 can be stored in the memory of controller 122, or controller 12 can additionally determine the position of the filler material 400 based on the current amplitude when shaft 202 is operating or from the current orientation of the internal cavity 310 recorded in a immediately preceding operation when shaft 202 is not currently rotating. As described above, one or more position sensors (e.g., encoders) can be provided to control the positioning of shaft 202 and optionally determine the rotational speed of shaft 202.

[0055] In some cases, the amplitude setting may include a stop shaft 202 (and therefore an eccentric mass block 300) such that a corresponding segment of the internal cavity 310 associated with the selected amplitude (such as a first segment 312 or a second segment 322) is positioned such that the filling material 400 flows under gravity from the upper amplitude-related segment (e.g., from the second segment 322) or otherwise travels to the corresponding lower amplitude-related segment of the internal cavity 310 (e.g., to the first segment 312). As previously described, the filling material 400 may travel through a third segment 332 to reach the corresponding amplitude-related segment of the internal cavity 310. For example, from... Figure 3 The relevant amplitude shift to Figure 4 The relevant amplitude, i.e., the set amplitude, can control the shaft 202 to stop, so that the internal cavity 310 is as Figure 3 The orientation is shown.

[0056] Shaft 202 can be stopped for a predetermined amount of time (e.g., 2 seconds) to allow the filler material 400 to flow from the first section 312 through the third section 332 to the second section 322. Similarly, in order to transfer the filler material 400 from the second section 322 to the first section 312 under the influence of gravity, the internal cavity 310 can be stopped at a position consistent with... Figure 3 The positions shown are at 180 degrees. The transfer of filler material 400 can prevent filler material 400 from remaining in the upper amplitude-related section. This time amount can be set based on the assumption of how much time is needed to fully transfer this particular type of filler material 400 between these specially configured sections of the internal cavity 310.

[0057] With the filling material 400 already in the second section 322 of the internal cavity 310, the amplitude can be set based on the rotation direction of the shaft 202 (and therefore the eccentric mass block 300) to provide a different amplitude associated with the second section 322 of the internal cavity 310, which leads to the discussion of the operating vibration mechanism at S606.

[0058] In S606, a vibration mechanism, such as a first vibration mechanism 118, can be operated to vibrate the first roller 102 with an amplitude related to a set amplitude, according to S604. This operation of the first vibration mechanism 118 may include rotating the shaft 202 (and thus eccentrically massing the mass block 300) at a sufficient rotational speed such that the filler material 400 is held within an amplitude-related segment of the internal cavity 310 (e.g., a first segment 312 or a second segment 322). As described above, the vibration mechanism 118 can be operated to vibrate the first roller 102 when the vibratory compactor 100 stops or moves forward or backward.

[0059] As an example, as mentioned above, regarding Figure 3-5 , Figure 3 An example corresponding to the first amplitude, Figure 4 An example corresponding to the second amplitude, and Figure 5 An example corresponding to the third amplitude, where the second amplitude is greater than the first amplitude and the third amplitude is greater than the second amplitude.

[0060] exist Figure 3 In order to generate the first amplitude, a filler material 400 can be provided in the first segment 312, and then the internal cavity 310 is rotated clockwise. The filler material 400 can be pressed against the first filler material assembly 314, particularly the corner between the curved outer radial wall of the first segment 312 and the inwardly extending sidewall of the tail (depending on the direction of rotation) forming the first filler material assembly 314, such as... Figure 3As shown. Based on the positioning of the filling material 400 relative to the eccentric convex angle 305 (i.e., opposite to the eccentric convex angle 305) and the rotation of the internal cavity 310 (and the shaft 202 and the body 302), the eccentric mass block 300 can vibrate with a first amplitude. Since the first segment 312 is symmetrical in the cross-sectional view, although the above description specifies clockwise rotation, the first amplitude can also be provided by counterclockwise rotation.

[0061] exist Figure 4 In order to generate a second amplitude, a filler material 400 can be provided in the second segment 322, and then the internal cavity 310 is rotated clockwise. The filler material 400 can be pressed against the second filler material assembly 326 of the second segment 322, particularly the corner between the curved outer radial wall of the second segment 322 and the inwardly extending sidewall of the tail (depending on the direction of rotation) forming the second filler material assembly 326, such as... Figure 4 As shown. Because the filling material 400 is offset from the eccentric convex angle 305, the rotation of the internal cavity 310 (as well as the shaft 202 and the body 302) can cause the eccentric mass block 300 to vibrate with a second amplitude.

[0062] exist Figure 5 In order to generate a third amplitude, i.e., the highest available amplitude of the eccentric mass block 300, the filler material 400 can be disposed in the second section 322, and then the internal cavity 310 is rotated counterclockwise. The filler material 400 can be pressed against the first filler material assembly 324 of the second section 322, particularly the corner between the curved outer radial wall of the second section 322 and the inwardly extending sidewall of the tail (according to the direction of rotation) forming the first filler material assembly 324, such as... Figure 5 As shown. Because the filling material 400 is aligned with the eccentric convex angle 305, the rotation of the internal cavity 310 (as well as the shaft 202 and the body 302) can cause the eccentric mass block 300 to vibrate with a third amplitude.

[0063] According to one or more embodiments, the rotational speed of shaft 202 (and therefore eccentric mass 300) can be the same for all different amplitudes. Alternatively, the rotational speed can be inversely proportional to the amplitude. For example, with Figure 3 The associated amplitude can be associated with rotation at the first rotational speed, and with Figure 4 The associated amplitude can be associated with rotation at a second rotational speed, and with... Figure 5 The associated amplitude can be associated with rotation at a third rotational speed, where the second rotational speed is greater than the third rotational speed and the first rotational speed is greater than the second rotational speed. As an example, shaft 202 can rotate at a speed from 1,400 rpm to 3,800 rpm (e.g., where a soil compactor can be associated with the lower part of the range and an asphalt compactor can be associated with the upper part of the range). For example, with... Figure 3 The relevant amplitude could be 3,800 rpm, and Figure 4 The relevant amplitude could be 3,200 rpm, and Figure 5 The relevant amplitude can be 2,500 rpm.

[0064] The different amplitudes associated with different amplitude-related segments of the internal cavity 310 (e.g., the first segment 312 and the second segment 322) can vary depending on the rotational speed of the shaft 202. Therefore, each amplitude-related segment of the internal cavity 310 can be associated with one or two different and non-overlapping amplitude ranges.

[0065] Operation S606 can return to S604 to set (i.e., re-set) the amplitude of the first vibration mechanism 118 to a different amplitude. Otherwise, the vibration mechanism 118 can be shut down, for example, via input at the user interface 124 (e.g., even while the vibratory compactor 100 is still moving). Shutting down the first vibration mechanism 118 causes the shaft to stop rotating, positioning the internal cavity 310 such that the filling material 400 is in the same amplitude-related segment (e.g., first segment 312 or second segment 322) associated with the most recent amplitude at which the first vibration mechanism 118 was operated. Therefore, if this amplitude is then set for the operation of the first vibration mechanism 118, it is easier to start the first vibration mechanism 118 at the same amplitude.

[0066] While various aspects of the invention have been specifically shown and described with reference to the foregoing embodiments, those skilled in the art will understand that various additional embodiments can be contemplated through modifications to the disclosed machines, systems, and methods without departing from the spirit and scope of the disclosure. These embodiments should be understood to fall within the scope of the invention as defined by the claims and any equivalents.

Claims

1. A vibratory compaction machine, comprising: Chassis; Rollers that are rotatably connected to the chassis; Control circuit; and A vibration mechanism comprising a rotatable shaft and an adjustable mass eccentricity provided along the rotatable shaft, the vibration mechanism being configured to vibrate the roller with three or more individual amplitudes under the control of the control circuit, and the adjustable mass eccentricity having: main body, An eccentric convex angle extending from the first side of the main body, the eccentric convex angle being integral with the main body. The internal cavity defined by the body, such that the body completely surrounds the internal cavity, and Provide filling material in the internal cavity, The internal cavity has a first segment, a second segment, and a third segment between the first segment and the second segment, connecting the first segment and the second segment. A portion of the third segment of the internal cavity is located along the central longitudinal axis of the rotatable shaft. The first segment defines a first region in the cross-sectional view of the main body, the second segment defines a second region in the cross-sectional view of the main body, and the third segment defines a third region in the cross-sectional view of the main body. The second region is larger than the first region, and the first region is larger than the third region. The eccentric convex angle is adjacent to the second section of the internal cavity and is radially outward of the second section. The vibration mechanism is configured to cause the roller to vibrate at three or more individual amplitudes based on rotational control of the rotatable shaft and the position of the filling material within the internal cavity, under the control of the control circuit.

2. The vibratory compaction machine according to claim 1, wherein the internal cavity has an hourglass shape in a cross-sectional view of the body.

3. The vibratory compaction machine according to claim 1, wherein the filling material is metal pellets.

4. The vibratory compaction machine according to claim 1, wherein the first section and the second section of the internal cavity converge into the third section of the internal cavity.

5. The vibratory compaction machine according to claim 1, wherein a first section of the internal cavity defines a first set of two opposing assemblies of filling material, and a second section of the internal cavity defines a second set of two opposing assemblies of filling material.

6. The vibratory compaction machine according to claim 5, wherein the first filler material assembly of the second group of two opposing filler material assemblies in the second section is aligned with the eccentric convex angle, and the second filler material assembly of the second group of two opposing filler material assemblies in the second section is deviated from the eccentric convex angle.

7. The vibratory compaction machine according to claim 1, The first segment of the internal cavity is associated with the first amplitude of the three or more individual amplitudes. The second segment of the internal cavity is associated with the second and third amplitudes of the three or more individual amplitudes, and The second amplitude and the third amplitude are greater than the first amplitude.

8. A vibration compaction method, comprising: Provides a rotatable shaft for the vibration mechanism of the vibrating roller; as well as An adjustable mass eccentric element is provided along the rotatable axis of the vibration mechanism of the vibrating roller. The adjustable mass eccentric component includes: main body, An internal cavity defined by the body, such that the body surrounds the internal cavity, and Provide filling material in the internal cavity, The internal cavity has a first section, a second section, and a third section between the first section and the second section, connecting the first section and the second section. The first segment defines a first region in the cross-sectional view of the main body, the second segment defines a second region in the cross-sectional view of the main body, and the third segment defines a third region in the cross-sectional view of the main body, wherein the first and second regions are larger than the third region, and The vibration mechanism is configured to cause the vibrating roller to vibrate with three or more individual amplitudes based on rotational control of the rotatable shaft and selective placement of the filling material in the first or second section of the internal cavity.

9. The vibration compaction method according to claim 8, The three or more individual amplitudes include at least a first amplitude associated with the first segment of the internal cavity, a second amplitude associated with the second segment of the internal cavity, and a third amplitude associated with the second segment of the internal cavity. The second amplitude is greater than the first amplitude, and the third amplitude is greater than the second amplitude.

10. The vibration compaction method of claim 8, further comprising operating the vibration mechanism in response to an input command at a user interface with one of the three or more individual amplitudes. The adjustable mass eccentricity further includes an eccentric convex angle provided on one side of the body associated with the second section of the internal cavity.

11. The vibration compaction method according to claim 8, further comprising: The controller is used to control the rotatable shaft to position the body of the adjustable mass eccentric and the internal cavity, such that the filling material is in the first section of the internal cavity to provide a first amplitude in response to a first control input that selects a first amplitude; The controller is used to control the rotatable shaft to position the internal cavity of the body and the adjustable mass eccentric member such that the filling material is in a first filling material assembly in a second segment of the internal cavity, thereby providing a second amplitude in response to a second control input that selects a second amplitude. as well as The controller is used to control the rotatable shaft to position the internal cavity of the body and the adjustable mass eccentric member such that the filling material is in a second filling material assembly in a second segment of the internal cavity, thereby providing a third amplitude in response to a third control input that selects a third amplitude.

12. The vibration compaction method of claim 8, further comprising using a controller to set the vibration mechanism to operate at one of the three or more individual amplitudes by positioning the internal cavity of the adjustable mass eccentric member, such that the filler material is gravity-transferred from the first section to the second section or vice versa through the third section and such that no filler material remains in the third section.

13. The vibration compaction method according to claim 8, further comprising using a controller to change the amplitude of the vibration mechanism by changing the rotational direction of the body and the internal cavity when the filling material is in the second section of the internal cavity.

14. The vibration compaction method of claim 8, further comprising operating the vibration mechanism with a controller at a first amplitude of the three or more individual amplitudes when the filling material is in the first section of the internal cavity and the body and the internal cavity are rotating in either a first rotation direction or a second rotation direction opposite to the first rotation direction.

15. An adjustable mass eccentric component for a compactor, comprising: main body; An eccentric convex angle extending from one side of the main body; and The internal cavity is defined by the main body, such that the main body completely surrounds the internal cavity. The internal cavity includes: First section, The second section, and A third segment, which lies between and connects the first and second segments, defines a volume smaller than the corresponding volumes of the first and second segments. The first and second segments gradually narrow towards the third segment, and The eccentric convex angle is arranged to be closer to the second segment than the first segment and the third segment.

16. The adjustable mass eccentric component according to claim 15, further comprising: Metal filling material enclosed in the internal cavity; and A shaft having a first end and a second end opposite to the first end, the body being provided along the shaft spaced apart from the first and second ends of the shaft. The metal filling material is movable between the first, second, and third sections based on the rotation of the internal cavity corresponding to the rotation of the shaft.

17. The adjustable mass eccentric component according to claim 15, In the side section view, the first segment has a first curved outer radial wall and the second segment has a second curved outer radial wall, and The first arc of the first curved outer radial wall is shorter in length than the second arc of the second curved outer radial wall.

18. The adjustable mass eccentric component according to claim 15, The first section defines a filler material assembly at its opposite corner, and The second section defines the filler material assembly at its opposite corner.

19. The adjustable mass eccentric component according to claim 18, The first filler material assembly in the second section overlaps with and is adjacent to the eccentric convex angle, and The second filler material assembly in the second section does not overlap with or adjacent to the eccentric convex angle.

20. The adjustable mass eccentric member of claim 15, wherein the body, the eccentric convex angle, and the internal cavity are configured to rotate uniformly on an axis to vibrate the vibration mechanism of the compactor at individual amplitudes within three or more different and non-overlapping amplitude ranges.

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