Work vehicle with matched mass dampers

Abstract

Work vehicle (100), including: a frame (102) with a first longitudinal frame element (104) with a first rear end (108); and a second longitudinal frame element (106) extending parallel to the first longitudinal frame element (104), the second longitudinal frame element having a second rear end (110); an axis (116) extending perpendicularly to the first longitudinal frame element (104) and to the second longitudinal frame element (106); a cabin (114) which is supported by the frame (102), wherein the cabin (114) is arranged on one side of the first and second longitudinal frame element (104, 106) opposite the axis (116). a first matched mass damper assembly (120) mounted on the first longitudinal frame element (104) between the first rear end (108) and the cabin (114); and a second matched mass damper assembly (122) mounted on the second longitudinal frame element (106) between the second rear end (110) and the cabin (114); a third tuned mass damper assembly (170), wherein the frame (102) further includes a transverse element (112) which is connected to both the first longitudinal frame element (104) and the second longitudinal frame element (106); and the third tuned mass damper assembly (170) is mounted on the transverse element (112), wherein The third tuned mass damper assembly (170) is attached to the transverse element (112) on the same side of the transverse element (112) as the axle (116).

Description

BACKGROUND

[0001] The present invention relates to a work vehicle that includes vibration reduction components.

[0002] US 6,450,473 B1 describes dynamic dampers and a damping support device for attaching a side structure, such as a cab frame, to a vehicle body. The vehicle body, in the form of a cab tractor, a two-axle, four-wheeled vehicle, includes a transmission, a clutch housing, and a gearbox housing. The device comprises brackets attached to the vehicle body, damping couplings positioned between the side structure and each of the brackets, and dynamic dampers attached to each of the brackets and adjacent to each of the damping couplings.

[0003] German patent application DE 10 2015 214 456 A1 discloses a cabin mounting arrangement for a commercial vehicle, comprising several longitudinal control arms by means of which a driver's cabin is movably mounted to a vehicle frame, and two of the longitudinal control arms connected to a torsion bar spring, with several pairs of longitudinal control arms. The vehicle frame is that of a commercial vehicle. The driver's cabin is connected to the vehicle frame by springs and / or spring dampers, and is thereby supported by springs and / or damping.

[0004] Documents US 2011 / 0 079 457 A1, US 2008 / 0 136 207 A1, US 2008 / 0 252 102 A1 and JP 2017 - 36 032 A reveal further commercial vehicles with cabin suspension systems. SUMMARY

[0005] Many work vehicles attempt to prevent vibration transmission to the cab. Such vehicles often incorporate a cab supported by one or more springs to mitigate vibration transmission. However, even these vehicles can experience vibrations at resonant frequencies at certain speeds. These vibrations can generate significant noise. The invention therefore aims to provide a work vehicle with one or more components for more effectively reducing vibrations, particularly those at resonant frequencies. This objective is achieved by a work vehicle according to claim 1, 7, or 12 and by a tuned mass damper assembly according to claim 15.

[0006] Further aspects of the invention become apparent from the detailed description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a perspective rear view of a work vehicle according to one embodiment of the disclosure. Fig. 2 is a detailed rear view of the work vehicle from Fig. 1. Fig. Figure 3 is a perspective view of a matched mass damper assembly of the work vehicle of Fig. 1. Fig. Figure 4 is a perspective exploded view of the tuned mass damper assembly of Fig. 3. Fig. Figure 5 is a perspective view of the tuned mass damper assembly of Fig. 3, which moves in a first direction due to vibrations. Fig. Figure 6 is a perspective view of the tuned mass damper assembly of Fig. 3, which moves in a second direction due to vibrations. Fig. Figure 7 is a perspective lower rear cross-sectional view of a section of the work vehicle. Fig. 1, which shows a matched mass damper assembly. Fig. Figure 8 is a perspective exploded view of the tuned mass damper assembly of Fig. 7. Fig. Figure 9 is a perspective view of the tuned mass damper assembly of Fig. 7, which moves in a first direction due to vibrations. Fig. Figure 10 is a perspective view of the tuned mass damper assembly of Fig. 7, which moves in a second direction due to vibrations. DETAILED DESCRIPTION

[0007] Before embodiments of the invention are explained in detail, it should be understood that the invention is not limited in its application to the design details and component arrangement described in the following description or illustrated in the following drawings. The invention can support other embodiments and can be applied or implemented in various ways.

[0008] Fig. Figure 1 illustrates a work vehicle 100. The work vehicle 100 may be subject to vibrations during travel, which can be loud for an operator, especially if the vibrations occur at resonant frequencies of the components of the work vehicle 100. It has been found that these vibrations at resonant frequencies occur particularly when driving the work vehicle 100 at transport speeds (e.g., road speeds for transporting the work vehicle 100 to or from a work site).

[0009] The work vehicle 100 includes a frame 102. The frame 102 includes a first longitudinal frame element 104 and a second longitudinal frame element 106. The first and second longitudinal frame elements 104, 106 extend parallel to each other and parallel to the forward direction of travel of the work vehicle 100. The first longitudinal frame element 104 includes a first rear end 108. The second longitudinal frame element 106 includes a second rear end 110. The first rear end 108 and the second rear end 110 are the rearmost sections of the first and second longitudinal frame elements 104, 106 relative to the direction of travel of the work vehicle 100. The frame 102 also includes a transverse element 112. The transverse element 112 is connected to both the first longitudinal frame element 104 and the second longitudinal frame element 106. The transverse element 112 extends perpendicularly to the first and second longitudinal frame elements 104, 106.

[0010] The frame 102 supports a cabin 114 of the work vehicle 100, in which an operator sits. The cabin 114 is arranged above the first and second longitudinal frame elements 104, 106. The frame 102 is also rotatably connected to an axle 116, to which ground engagement elements 118 (e.g., wheels, sprockets, and tracks, or the like) are coupled. The axle 116 extends perpendicular to the first and second longitudinal frame elements 104, 106 and is arranged below them.

[0011] The work vehicle 100 is depicted with a median plane CP that bisects the work vehicle 100. The median plane CP extends parallel to the forward direction of travel of the work vehicle 100. In the illustrated embodiment, the median plane CP extends parallel to the first and second longitudinal frame elements 104, 106 and perpendicular to the transverse element 112 and the axis 116.

[0012] The work vehicle 100 also includes a first matched mass damper assembly 120 and a second matched mass damper assembly 122. As in Fig. 1 and Fig. As shown in Figure 2, the first tuned mass damper assembly 120 is mounted on the first longitudinal frame element 104, and the second tuned mass damper assembly 122 is mounted on the second longitudinal frame element 106. In the illustrated embodiment, the first tuned mass damper assembly 120 is positioned between the first rear end 108 of the first longitudinal frame element 104 and the cab 114. Similarly, in the illustrated embodiment, the second tuned mass damper assembly 122 is positioned between the second rear end 110 of the second longitudinal frame element 106 and the cab 114. Thus, the first tuned mass damper assembly 120 and the second tuned mass damper assembly 122 are positioned behind the cab 114 along the forward direction of travel of the work vehicle 100.

[0013] In the illustrated embodiment, the first tuned mass damper assembly 120 is attached to an upper surface of the first longitudinal frame element 104, and the second tuned mass damper assembly 122 is attached to an upper surface of the second longitudinal frame element 106. Thus, the first and second tuned mass damper assemblies 120, 122 are positioned on a side of the first and second frame elements 104, 106 that is opposite the axis 116.

[0014] As in Fig. As shown in Figure 2, the first tuned mass damper assembly 120 includes a first mounting plate 124 with a first frame end 126 and a first weight end 128. The first frame end 126 is coupled to the first longitudinal frame element 104, and the first weight end 128 is opposite the first frame end 126, such that the first weight end 128 is closer to the center plane CP than the first frame end 126. Furthermore, in Fig. As shown in Figure 2, the second tuned mass damper assembly 122 includes a second mounting plate 130 with a second frame end 132 and a second weight end 134. The second frame end 132 is coupled to the second longitudinal frame element 106, and the second weight end 134 is opposite the second frame end 132, such that the second weight end 134 is closer to the center plane CP than the second frame end 132. Thus, the work vehicle 100 includes a first and second tuned mass damper assembly 120, 122, which form an angle with each other.

[0015] Since the illustrated embodiment includes a first and a second tuned mass damper assembly 120, 122, which are identical except for a mirroring in the arrangement, only the first tuned mass damper assembly 120 is shown in the Fig. Shown 3-6.

[0016] With reference to Fig. Figure 3 shows the first tuned mass damper assembly 120 mounted on the first longitudinal frame element 104 adjacent to the first rear end 108 of the first longitudinal frame element 104. In the illustrated embodiment, the second tuned mass damper assembly 120 is also attached to the second longitudinal frame element 106 adjacent to the second rear end 110 of the second longitudinal frame element 106. In the illustrated embodiment, each of the first tuned mass damper assembly 120 and the second tuned mass damper assembly 122 includes an L-bracket 136 that connects the mounting plate 124, 130 to the longitudinal frame element 104, 106, for example, via mounting fasteners 138.

[0017] As in the Fig. 3 and Fig. As shown in Figure 4, the first tuned mass damper assembly 120 includes the first mounting plate 124, which has the first frame end 126 and the first weight end 128. The first weight end 128 of the first mounting plate 124 has a circular cross-section. Likewise, the second weight end 134 of the second mounting plate 130 has a circular cross-section.

[0018] Also in Fig. 3 and Fig. As shown in Figure 4, the first mounting plate 124 includes a first vertical section 140 and a first angled section 142. The first vertical section 140 extends upwards from the first frame end 126 of the first mounting plate 124. The first angled section 142 extends from the first vertical section 140 to the midplane CP and terminates at the first weight end 128. With reference to Fig. 2 The second mounting plate 130 also includes a second vertical section 144 and a second angled section 146. These angled mounting plates 124, 130 position the matched mass damper assemblies 120, 122 away from other components of the work vehicle 100, including, for example, the fuel tank.

[0019] With reference to the Fig. 3 and Fig. 4 includes the first mounting plate 124, furthermore a first back 148 and a first front 150, which is opposite the first back 148. The second mounting plate 130 also includes a second back 152 and a second front, but only the second back 152 is in Fig. 2 shown.

[0020] The first tuned mass damper assembly 120 also includes a first rear weight 154, which is arranged on the first rear face 148 of the first mounting plate 124, wherein a first rear elastic layer 156 is arranged between the first mounting plate 124 and the first rear weight 154. In the illustrated embodiment, the first tuned mass damper assembly 120 further includes a first front weight 158, which is arranged on the first front face 150 of the first mounting plate 124, wherein a first front elastic layer 160 is arranged between the first mounting plate 124 and the first front weight 158. Only the second rear weight 162 of the second tuned mass damper assembly 122 is in Fig. 2 shown, although the arrangement of the second tuned mass damper assembly 122 is essentially identical to that of the first tuned mass damper assembly 120.

[0021] As in Fig. As shown in Figure 4, the first tuned mass damper assembly 120 further comprises a plurality of first fastening elements 164 that connect the first front weight 158 ​​to the first rear weight 154. In the illustrated embodiment, the first fastening elements 164 are threaded only with the first front weight 158. The second tuned mass damper assembly 122 also comprises a plurality of second fastening elements 166 that connect the second front weight to the second rear weight 162 ( Fig. 2).

[0022] In the illustrated embodiment, the first tuned mass damper assembly 120 also includes a plurality of first spacers 168. Each of the first fasteners 164 passes through a corresponding first spacer 168. The first spacers 168 prevent a user from overtightening the first fasteners 164, ensuring that the first rear elastic layer 156 and the first front elastic layer 160 can be further compressed during the movement of the first rear weight 154 and the first front weight 158. The first rear weight 154 and the first front weight 158 ​​can move together, but can also move independently of the first mounting plate 124 in a plurality of directions.The second tuned mass damper assembly 122 similarly incorporates a plurality of second spacers, so that the second rear weight 162 and the second front weight can move in a plurality of directions independently of the second mounting plate 130.

[0023] As in Fig. 5 and Fig. As shown in Figure 6, the first rear weight 154 and the first front weight 158 ​​move together relative to the first mounting plate 124. As shown in Fig. As shown in Figure 5, for example, the first rear weight 154 and the first front weight 158 ​​remain at least temporarily in place when an impulse on the frame 102 causes the first longitudinal frame element 104 and the rigidly attached first mounting plate 124 to move forward. This movement causes the first front weight 158 ​​to compress the first front elastic layer 160, thereby damping at least some of the vibration forces. As shown in Fig. As shown in Figure 6, the first rear weight 154 and the first front weight 158 ​​remain at least temporarily in place when an impulse on the frame 102 causes the first longitudinal frame element 104 and the rigidly attached first mounting plate 124 to move rearward. This movement causes the first rear weight 154 to compress the first rear elastic layer 156, thereby damping at least some of the vibrational forces. Other impulse directions are considered herein, and those discussed above are only two examples.In some embodiments, a gap between each of the first spacers 168 and the first mounting plate 124, a gap between each of the first spacers 168 and the first rear elastic layer 156, and a gap between each of the first spacers 168 and the first front elastic layer 160 allow the first rear weight 154 and the first front weight 158 ​​to move laterally with respect to the frame 102 and the first mounting plate 124.

[0024] In the illustrated embodiment, each of the first rear weight 154, the first front weight 158, the second rear weight 162, and the second front weight has a circular cross-section. Thus, due to the radial symmetry of the weights, the alignment of the weights is less critical for the tuned mass damper assemblies 120, 122. For example, with this arrangement, the tolerance for the torque when installing the fasteners 164, 166 is greater than with weights that are not circular in cross-section. The weights 158, 162 cannot be misaligned relative to each other due to their radial symmetry.

[0025] With reference to Fig. 2 and Fig. Figure 7 further includes the work vehicle 100 with a third tuned mass damper assembly 170, which is mounted on the transverse element 112 of the frame 102. In the illustrated embodiment, the third tuned mass damper assembly 170 is attached to an underside of the transverse element 112 such that the third tuned mass damper assembly 170 is located on the same side of the transverse element 112 as the axle 116. In the illustrated embodiment, the third tuned mass damper assembly 170 is mounted centrally on the transverse element 112, so that the third tuned mass damper assembly 170 is arranged on both sides of the median plane CP.

[0026] As in Fig. As shown in Figure 8, the third tuned mass damper assembly 170 includes a third mounting plate 172 with a frame side 174 and a weight side 176. The weight side 176 is positioned opposite the frame side 174. A third weight 178 is arranged on the weight side 176 of the third mounting plate 172, and a third elastic layer 180 is arranged between the third weight 178 and the third mounting plate 172. In some embodiments, the third elastic layer 180 is attached to the third weight 178 and the third mounting plate 172 by means of an adhesive.

[0027] The third tuned mass damper assembly 170 further comprises a plurality of third fasteners 182 that engage in threaded engagement with the third mounting plate 172, but not with the third weight 178 or the third elastic layer 180. The head 184 of each third fastener 182 and / or a washer 186 arranged on each third fastener 182 is positioned at a distance from the third weight 178. The head 184 and / or the washer 186 of each third fastener 182 is configured only to retain the third weight 178 in the event of failure of the adhesive bonding the third weight 178 to the third elastic layer 180 or the adhesive bonding the third elastic layer 180 to the third mounting plate 172. In this arrangement, the third weight 178 can move independently of the third mounting plate 172 in a plurality of directions.

[0028] As in Fig. As shown in Figure 9, the third weight 178 remains at least temporarily in place when an impulse on the frame 102 causes the transverse element 112 and the rigidly attached third mounting plate 172 to move downwards. This movement causes the third weight 178 to compress the third elastic layer 180, thereby damping at least some of the vibrational forces. As shown in Fig.As shown in Figure 10, the third weight 178 remains at least temporarily in place when an impulse on the frame 102 causes the transverse element 112 and the rigidly attached third mounting plate 172 to move upwards. This movement causes the third weight 178 to stretch the third elastic layer 180, since the third elastic layer 180 is attached to both the third weight 178 and the third mounting plate 172 by means of adhesives, thereby damping at least some of the vibrational forces. In some embodiments, a gap between each of the third fasteners 182 and the third weight 178, and a gap between each of the third fasteners 182 and the third elastic layer 180, allows the third weight 178 to move laterally with respect to the frame 102, the third mounting plate 172, and the third fasteners 182.

[0029] In order for the tuned mass damper assemblies 120, 122, 170 disclosed herein to work most effectively, the mass of each weight and the hardness of each elastic layer must be “tuned” to the specifications required for the respective work vehicle 100.

[0030] In some embodiments, each of the first tuned mass damper assemblies 120 and the second tuned mass damper assembly 122 (excluding the L-bracket 136) weighs between 6 and 10 kilograms. In further embodiments, each of the first tuned mass damper assembly 120 and the second tuned mass damper assembly 122 (excluding the L-bracket 136) weighs between 7 and 9 kilograms. In still further embodiments, each of the first tuned mass damper assembly 120 and the second tuned mass damper assembly 122 (excluding the L-bracket 136) weighs between 7 and 8 kilograms. In yet other embodiments, each of the first tuned mass damper assembly 120 and the second tuned mass damper assembly 122 (excluding the L-bracket 136) weighs 7.922 kilograms. In some embodiments, the third tuned mass damper assembly 170 weighs between 6 and 10 kilograms.In further embodiments, the third tuned mass damper assembly 170 weighs between 7 and 9 kilograms. In still further embodiments, the third tuned mass damper assembly 170 weighs between 8 and 9 kilograms. In further embodiments, the third tuned mass damper assembly 170 weighs 8.219 kilograms. In some embodiments, each of the first front weight 158, the first rear weight 154, the second front weight, and the second rear weight 162 weighs between 0.5 and 4.5 kilograms. In further embodiments, each of the first front weight 158, the first rear weight 154, the second front weight, and the second rear weight 162 weighs between 1.5 and 3.5 kilograms. In still further embodiments, each of the first front weight 158, the first rear weight 154, the second front weight, and the second rear weight 162 weighs approximately 2.25 kilograms.In some embodiments, the third weight 178 weighs between 3 and 7 kilograms. In other embodiments, the third weight 178 weighs between 4 and 6 kilograms. In still other embodiments, the third weight 178 weighs approximately 5.09 kilograms.

[0031] In some embodiments, each of the first rear elastic layer 156, the first front elastic layer 160, the second rear elastic layer, and the second front elastic layer has a hardness of 60 on the durometer scale. In some embodiments, the third elastic layer 180 has a hardness of 45 on the durometer scale. Other hardness values ​​on the durometer scale are also considered herein. The elastic layers disclosed herein can, for example, be made of rubber.

[0032] Although the invention has been described in detail with reference to certain preferred aspects, variations and modifications exist within the scope and spirit of one or more independent aspects of the invention as described. Various features and advantages of the invention are set forth in the following claims.

Claims

[1] Work vehicle (100), comprising: a frame (102) with a first longitudinal frame element (104) with a first rear end (108); and a second longitudinal frame element (106) extending parallel to the first longitudinal frame element (104), the second longitudinal frame element having a second rear end (110); an axis (116) extending perpendicularly to the first longitudinal frame element (104) and to the second longitudinal frame element (106); a cabin (114) which is supported by the frame (102), wherein the cabin (114) is arranged on one side of the first and second longitudinal frame element (104, 106) opposite the axis (116). a first matched mass damper assembly (120) mounted on the first longitudinal frame element (104) between the first rear end (108) and the cabin (114); and a second matched mass damper assembly (122) mounted on the second longitudinal frame element (106) between the second rear end (110) and the cabin (114); a third tuned mass damper assembly (170), wherein the frame (102) further includes a transverse element (112) which is connected to both the first longitudinal frame element (104) and the second longitudinal frame element (106); and the third tuned mass damper assembly (170) is mounted on the transverse element (112), wherein The third tuned mass damper assembly (170) is attached to the transverse element (112) on the same side of the transverse element (112) as the axle (116). [2] Work vehicle (100) according to claim 1, wherein: the first matched mass damper assembly (120) is mounted on the side of the first longitudinal frame element (104) opposite the axle (116); and the second matched mass damper assembly (122) is mounted on the side of the second longitudinal frame element (106) opposite the axle (116). [3] Work vehicle (100) according to claim 1 or 2, wherein: a median plane (CP) extends along a forward direction of travel of the work vehicle (100), wherein the median plane (CP) runs parallel to the first longitudinal frame element (104) and to the second longitudinal frame element (106), wherein the median plane (CP) runs perpendicular to the axis (116); the first matched mass damper assembly (120) includes a first mounting plate (124), wherein the first mounting plate (124) includes a first frame end (126) and a first weight end (128) opposite the first frame end (126); the first weight end (128) of the first mounting plate (124) is closer to the mid-plane (CP) than to the first frame end (126); the second tuned mass damper assembly (122) includes a second mounting plate (130), wherein the second mounting plate (130) includes a second frame end (132) and a second weight end (134) opposite the second frame end (132); and the second weight end (134) of the second mounting plate (130) is closer to the mid-plane (CP) than to the second frame end (132). [4] Work vehicle (100) according to claim 3, wherein the first weight end (128) of the first mounting plate (124) has a circular cross-section; and the second weight end (134) of the second mounting plate (130) has a circular cross-section. [5] Work vehicle (100) according to claim 3 or 4, wherein the first tuned mass damper assembly (120) further comprises a first L-bracket connecting the first mounting plate (124) to the first longitudinal frame element (104); and the second tuned mass damper assembly (122) further comprises a second L-bracket connecting the second mounting plate (130) to the second longitudinal frame element (106). [6] Working vehicle (100) according to claim 1, wherein a median plane (CP) extends along a forward direction of travel of the working vehicle (100), wherein the median plane (CP) is parallel to the first longitudinal frame element (104) and to the second longitudinal frame element (106), wherein the median plane (CP) is perpendicular to the axis (116); and the third tuned mass damper is arranged on both sides of the median plane (CP). [7] Work vehicle (100), comprising: a frame (102) which includes a longitudinal frame element; an axis (116) extending perpendicular to the longitudinal frame element; a matched mass damper assembly mounted on the longitudinal frame element on one side opposite the axis (116), the matched mass damper assembly comprising the following: a mounting plate with a frame end and a weight end opposite the frame end, wherein the frame end is coupled to the longitudinal frame element; a rear weight located on the back of the mounting plate; and a rear elastic layer positioned between the mounting plate and the rear weight , where the longitudinal frame element is a first longitudinal frame element (104); the frame (102) further includes a second longitudinal frame element (106) which extends parallel to the first longitudinal frame element (104); the tuned mass damper assembly is a first tuned mass damper assembly (120); the mounting plate is a first mounting plate (124); the frame end is a first frame end (126); the weight end is a first weight end (128); the rear weight is a first rear weight (154); the reverse side is a first reverse side (148) is; the posterior elastic layer is a first posterior elastic layer (156); and The work vehicle (100) also includes the following: a second tuned mass damper assembly (122) mounted on the second longitudinal frame element (106) on one side opposite the axle (116), the second tuned mass damper assembly (122) comprising the following: a second mounting plate (130) comprising a second frame end (132) and a second weight end (134) opposite the second frame end (132), wherein the second frame end (132) is coupled to the second longitudinal frame element (106); a second rear weight (162) arranged on a second rear side (152) of the second mounting plate (130); and a second rear elastic layer arranged between the second mounting plate (130) and the second rear weight (162) , where the first matched mass damper assembly (120) further includes the following: a first front weight (158) arranged on a first front face (150) of the first mounting plate (124), the first front face (150) being opposite the first rear face; and a first front elastic layer (160) arranged between the first mounting plate (124) and the first front weight; and a second matched mass damper assembly (122), which further includes the following: a second front weight arranged on a second front side of the second mounting plate (130), the second front side facing the second rear side (152); and a second front elastic layer located between the second mounting plate (130) and the second front weight. [8] Work vehicle (100) according to claim 7, wherein the first tuned mass damper assembly (120) further comprises a plurality of first fastening elements (164) connecting the first front weight (158) to the first rear weight (154); and the second tuned mass damper assembly (122) further comprises a plurality of second fastening elements (166) connecting the second front weight to the second rear weight (162). [9] Work vehicle (100) according to claim 8, wherein the first tuned mass damper assembly (120) further comprises a plurality of first spacers (168), each of the first spacers (168) being arranged between a corresponding first fastening element (164) and the first mounting plate (124), between the corresponding first fastening element (164) and the first front elastic layer (160), and between the corresponding first fastening element (164) and the first rear elastic layer (156); and the second tuned mass damper assembly (122) further comprises a plurality of second spacers, each of the second spacers being arranged between a corresponding second fastening element (166) and the second mounting plate (130), between the corresponding second fastening element (166) and the second front elastic layer, and between the corresponding second fastening element (166) and the second rear elastic layer. [10] Working vehicle (100) according to one of claims 7 to 9, wherein the first front weight (158), the first rear weight (154), the second front weight and the second rear weight (162) each have a circular cross-section. [11] Working vehicle (100) according to any one of claims 7 to 10, wherein the first front weight (158), the first rear weight (154), the second front weight and the second rear weight (162) each weigh between 1.5 and 3.5 kilograms. [12] Work vehicle (100), comprising: a frame (102) which includes a longitudinal frame element; an axis (116) extending perpendicular to the longitudinal frame element; a matched mass damper assembly mounted on the longitudinal frame element on one side opposite the axis (116), the matched mass damper assembly comprising the following: a mounting plate with a frame end and a weight end opposite the frame end, wherein the frame end is coupled to the longitudinal frame element; a rear weight located on the back of the mounting plate; and a rear elastic layer arranged between the mounting plate and the rear weight; wherein the longitudinal frame element is a first longitudinal frame element (104); the frame (102) further includes a second longitudinal frame element (106) which extends parallel to the first longitudinal frame element (104); the tuned mass damper assembly is a first tuned mass damper assembly (120); the mounting plate is a first mounting plate (124); the frame end is a first frame end (126); the weight end is a first weight end (128); the rear weight is a first rear weight (154); the reverse side is a first reverse side (148) is; the posterior elastic layer is a first posterior elastic layer (156); and The work vehicle (100) also includes the following: a second tuned mass damper assembly (122) mounted on the second longitudinal frame element (106) on one side opposite the axle (116), the second tuned mass damper assembly (122) comprising the following: a second mounting plate (130) comprising a second frame end (132) and a second weight end (134) opposite the second frame end (132), wherein the second frame end (132) is coupled to the second longitudinal frame element (106); a second rear weight (162) which is attached to a second rear (152) the second mounting plate (130) is arranged; and a second rear elastic layer arranged between the second mounting plate (130) and the second rear weight (162); a third matched mass damper assembly (170), comprising: a third mounting plate (172) with a frame side and a weight side opposite the frame side; a third weight (178) arranged on the weight side; and a third elastic layer (180) arranged between the third weight (178) and the weight side; and where the frame (102) further includes a transverse element (112) which is connected to both the first longitudinal frame element (104) and the second longitudinal frame element (106); and the third matched mass damper assembly (170) is mounted on the transverse element (112). [13] Work vehicle (100) according to claim 12, wherein the third elastic layer (180) is attached to the third weight (178) and the third mounting plate (172) with adhesive. [14] Work vehicle (100) according to claim 12 or 13, wherein the third weight (178) weighs between 4 and 6 kilograms. [15] Mass damper assembly for use with a work vehicle, the mass damper assembly comprising: a mounting plate, including: a frame end configured to be coupled to the work vehicle; and a weight end that is opposite the frame end and angled in relation to the frame end; a pair of weights coupled together and arranged on opposite sides of the mounting plate closer to the weight end of the mounting plate than to the frame end of the mounting plate; a pair of elastic layers, each elastic layer being arranged between the mounting plate and a corresponding weight of the pair of weights; a fastening element that couples the pair of weights together, the fastening element extending through the mounting plate and through the pair of elastic layers; and a spacer that at least partially surrounds the fastening element, wherein the spacer is arranged longitudinally between the pair of weights, wherein the spacer is arranged laterally between the fastening element and the mounting plate and between the fastening element and each elastic layer, wherein The pair of weights, the fastener, and the spacer move rigidly together as a single unit relative to the mounting plate.

Images