A vibration absorbing assembly and an engineering machine

Abstract

The utility model belongs to the technical field of engineering machinery, disclose a kind of vibration-absorbing assembly and engineering machinery, vibration-absorbing assembly includes base, first vibration-absorbing piece and second vibration-absorbing piece, base includes bottom plate and be equipped with first mounting plate and second mounting plate on bottom plate, first mounting plate is parallel to first direction, second mounting plate is parallel to third direction, first vibration-absorbing component is equipped on first mounting plate, first vibration-absorbing component is used to absorb vibration in first direction and second direction, second vibration-absorbing component is equipped on second mounting plate, and second vibration-absorbing component is used to absorb vibration in second direction and third direction;Engineering machinery includes frame and above-mentioned vibration-absorbing assembly, bottom plate is fixed on frame, first direction is the width direction of frame, second direction is the length direction of frame, and third direction is the height direction of frame.The vibration-absorbing assembly can reliably vibrate on engineering machinery length, width, height three directions, and then vibration is comprehensively and effectively attenuated.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a vibration absorption assembly and engineering machinery. Background Technology

[0002] The electrification of loaders has become a key development direction in the industry. Compared with traditional loaders, electric loaders lack the masking effect of engine noise, resulting in prominent resonance noise in the transmission system due to gear meshing noise and knocking noise of gear pairs when the machine is moving. This seriously affects the external sound power of the machine, the noise level near the driver's ear, and the sound quality.

[0003] In the prior art, some loader frames are equipped with vibration absorption devices. However, the vibrations of loaders in actual operation come from multiple directions, such as vibrations in the length, width, and height of the frame, and the resonant frequency is relatively high. The existing vibration absorption devices have limited effectiveness and cannot fully meet the vibration absorption requirements. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-absorbing assembly that has vibration absorption capabilities in three directions, and is simple in structure, reliable and durable.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A vibration-absorbing assembly, comprising:

[0007] The base includes a base plate and a first mounting plate and a second mounting plate disposed on the base plate, wherein the first mounting plate is parallel to a first direction and the second mounting plate is parallel to a second direction;

[0008] A first vibration-absorbing component is disposed on the first mounting plate, and the first vibration-absorbing component is used to absorb vibrations in the first direction and the third direction.

[0009] The second vibration absorber is disposed on the second mounting plate and is used to absorb vibrations in the second direction;

[0010] The first direction, the second direction, and the third direction are set orthogonally to each other.

[0011] Preferably, the first vibration-absorbing component includes a first support, a first vibration-absorbing element, and a first mass block. The first support is fixed to the first mounting plate, the first vibration-absorbing element is disposed on the first support, and the first mass block is disposed on the first vibration-absorbing element.

[0012] The second vibration absorber includes a second support, a second vibration absorber, and a second mass block. The second support is fixed to the second mounting plate, the second vibration absorber is disposed on the second support, and the second mass block is disposed on the second vibration absorber.

[0013] Preferably, the first support is provided with a first mounting hole, the first mounting plate is provided with a corresponding first connecting hole, and the first fastener passes through the first mounting hole and the first connecting hole, and is fixedly connected to the first support and the first mounting plate.

[0014] The second support has a second mounting hole, and the second mounting plate has a corresponding second connecting hole. The second fastener passes through the second mounting hole and the second connecting hole and is fixedly connected to the second support and the second mounting plate.

[0015] Preferably, the first fastener is configured as a first screw-in member, the first connecting hole is a threaded hole, and the first screw-in member is threadedly connected to the first mounting hole and the first connecting hole.

[0016] The second fastener is configured as a second screw connector, the second connecting hole is a threaded hole, and the second screw connector passes through the second mounting hole and the second connecting hole for threaded connection.

[0017] Preferably, the first vibration absorber includes a plurality of first vibration absorber columns connected between the first support and the first mass block, and the second vibration absorber includes a plurality of second vibration absorber columns connected between the second support and the second mass block.

[0018] Preferably, both the first and second vibration-absorbing columns are made of rubber.

[0019] Preferably, the first mounting plate is connected to the second mounting plate on one side along the first direction.

[0020] Preferably, the base plate, the first mounting plate, and the second mounting plate are integrally formed.

[0021] This utility model also provides an engineering machinery, including the above-mentioned vibration absorption assembly, which can reliably absorb vibration in the three directions of frame length, width and height, thereby comprehensively and effectively attenuating the vibration on the engineering machinery.

[0022] An engineering machine, comprising:

[0023] A chassis, on which a drive axle is mounted;

[0024] As described in any of the above descriptions, the base plate is fixed to the vehicle frame; the first direction is the width direction of the vehicle frame, the second direction is the length direction of the vehicle frame, and the third direction is the height direction of the vehicle frame.

[0025] Preferably, the base plate has a third mounting hole, the frame has a corresponding third connecting hole, and the third fastener passes through the third mounting hole and the third connecting hole, and fixes the base plate and the frame.

[0026] Beneficial effects:

[0027] The vibration-absorbing assembly provided by this utility model includes three parts: a base, a first vibration-absorbing component, and a second vibration-absorbing component. The base includes a bottom plate, a first mounting plate, and a second mounting plate. The first mounting plate is parallel to a first direction, and the second mounting plate is parallel to a second direction. Both the first and second mounting plates are disposed on the bottom plate. The first vibration-absorbing component is disposed on the first mounting plate, and the second vibration-absorbing component is disposed on the second mounting plate. The first vibration-absorbing component is used to absorb vibrations in the first and second directions, and the second vibration-absorbing component is used to absorb vibrations in the second and third directions. This vibration-absorbing assembly has vibration absorption capabilities in three directions, and features a simple structure, reliability, and durability.

[0028] This utility model also provides an engineering machinery, which includes a frame and the aforementioned vibration-absorbing assembly mounted on the frame, with a base plate fixed to the frame. The first direction, the second direction, and the third direction correspond to the width direction, the length direction, and the height direction of the frame, respectively. The first vibration-absorbing assembly can absorb vibrations in the length and width directions of the frame, and the second vibration-absorbing assembly can absorb vibrations in the length and height directions of the frame, thereby reliably absorbing vibrations in the length, width, and height directions of the frame, and comprehensively and effectively attenuating vibrations on the engineering machinery. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the vibration absorption assembly provided by this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the first vibration-absorbing component provided by this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the second vibration-absorbing component provided by this utility model;

[0032] Figure 4 This is a structural schematic diagram of the axle section of the engineering machinery provided by this utility model.

[0033] In the picture:

[0034] 1. Base; 11. Base plate; 12. First mounting plate; 13. Second mounting plate;

[0035] 2. First vibration-absorbing component; 21. First support; 211. First mounting hole; 22. First vibration-absorbing column; 23. First mass block;

[0036] 3. Second vibration-absorbing component; 31. Second support; 311. Second mounting hole; 32. Second vibration-absorbing column; 33. Second mass block;

[0037] 41. First fastener; 42. Second fastener; 43. Third fastener;

[0038] 5. Chassis; 51. Drive axle. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] This embodiment provides a vibration-absorbing assembly. (Refer to...) Figures 1 to 3 As shown, the vibration absorption assembly includes a base 1, a first vibration absorption component 2, and a second vibration absorption component 3. The base 1 includes a base plate 11 and a first mounting plate 12 and a second mounting plate 13 disposed on the base plate 11. The first mounting plate 12 is parallel to a first direction, and the second mounting plate 13 is parallel to a third direction. The first vibration absorption component 2 is disposed on the first mounting plate 12 and is used to absorb vibrations in the first and second directions. The second vibration absorption component 3 is disposed on the second mounting plate 13 and is used to absorb vibrations in the second and third directions. The first, second, and third directions are arranged orthogonally to each other.

[0044] In this embodiment, the vibration absorption assembly includes three parts: a base 1, a first vibration absorption component 2, and a second vibration absorption component 3. The base 1 includes a base plate 11, a first mounting plate 12, and a second mounting plate 13. The first mounting plate 12 is parallel to a first direction, and the second mounting plate 13 is parallel to a second direction. Both the first mounting plate 12 and the second mounting plate 13 are mounted on the base plate 11. The first vibration absorption component 2 is mounted on the first mounting plate 12, and the second vibration absorption component is mounted on the second mounting plate 13. The first vibration absorption component absorbs vibrations in the first and second directions, while the second vibration absorption component absorbs vibrations in the second and third directions. This vibration absorption assembly has vibration absorption capabilities in three directions, and its structure is simple, reliable, and durable.

[0045] In this embodiment, the first vibration-absorbing assembly 2 includes a first support 21, a first vibration-absorbing element, and a first mass block 23. The first support 21 is fixed to the first mounting plate 12, the first vibration-absorbing element is disposed on the first support 21, and the first mass block 23 is disposed on the first vibration-absorbing element. The second vibration-absorbing assembly 3 includes a second support 31, a second vibration-absorbing element, and a second mass block 33. The second support 31 is fixed to the second mounting plate 13, the second vibration-absorbing element is disposed on the second support 31, and the second mass block 33 is disposed on the second vibration-absorbing element. Specifically, both the first vibration-absorbing assembly 2 and the second vibration-absorbing assembly 3 are designed based on the anti-resonance phenomenon. For example, when the vibrating body acted upon by the vibration-absorbing assembly is subjected to external excitation vibration, the first vibration-absorbing assembly 2 forms a vibration coupling with the vibrating body in a first direction and a second direction, and the second vibration-absorbing assembly 3 forms a vibration coupling with the vibrating body in a second direction and a third direction, and its anti-resonance frequency matches the vibration frequency of the vibrating body. At this time, the reverse force generated by the first vibration absorption component 2 causes destructive interference to the vibration of the vibrating body in the first and second directions, and the reverse force generated by the second vibration absorption component 3 causes destructive interference to the vibration of the vibrating body in the second and third directions, causing the amplitude of the vibrating body in the first, second, and third directions to be significantly reduced or even reduced to zero.

[0046] Specifically, in this embodiment, the first support 21 has a first mounting hole 211, and the first mounting plate 12 has a corresponding first connecting hole. The first fixing member 41 passes through the first mounting hole 211 and the first connecting hole, and fixes the first support 21 and the first mounting plate 12. The second support 31 has a second mounting hole 311, and the second mounting plate 13 has a corresponding second connecting hole. The second fixing member 42 passes through the second mounting hole 311 and the second connecting hole, and fixes the second support 31 and the second mounting plate 13. The first support 21 and the first mounting plate 12 are fixedly connected by the first fixing member 41, and the second support 31 and the second mounting plate 13 are fixedly connected by the second fixing member 42. The structure is simple and the installation is convenient.

[0047] For example, the first fixing member 41 is configured as a first screw-in member, the first connecting hole is a threaded hole, and the first screw-in member passes through the first mounting hole 211 and the first connecting hole for threaded connection; the second fixing member 42 is configured as a second screw-in member, the second connecting hole is a threaded hole, and the second screw-in member passes through the second mounting hole 311 and the second connecting hole for threaded connection. Specifically, the first screw-in member and the second screw-in member can be selected as screws or bolts.

[0048] For example, the number of first screw connectors, first connecting holes, and first mounting holes 211 can be provided in a one-to-one correspondence; the number of second screw connectors, second connecting holes, and second mounting holes 311 can be provided in a one-to-one correspondence.

[0049] In this embodiment, the first vibration-absorbing component includes multiple first vibration-absorbing columns 22 connected between the first support 21 and the first mass block 23, and the second vibration-absorbing component includes multiple second vibration-absorbing columns 32 connected between the second support 31 and the second mass block 33. Specifically, multiple first vibration-absorbing columns 22 and second vibration-absorbing columns 32 are evenly distributed to ensure effective support for the first mass block 23 and the second mass block 33, and to achieve a reliable vibration-absorbing effect.

[0050] For example, the first vibration-absorbing column 22 and the second vibration-absorbing column 32 are both made of rubber. Specifically, the first vibration-absorbing column 22 is fixed between the first support 21 and the first mass block 23 by rubber vulcanization, and the second vibration-absorbing column 32 is fixed between the second support 31 and the second mass block 33 by rubber vulcanization.

[0051] In this embodiment, the base plate 11, the first mounting plate 12, and the second mounting plate 13 are integrally formed. This arrangement eliminates the complex process of assembling the base plate 11, the first mounting plate 12, and the second mounting plate 13 separately, making production and installation convenient.

[0052] In this embodiment, the first mounting plate 12 is connected to the second mounting plate 13 on one side along the first direction. This arrangement further enhances the overall strength of the base 1.

[0053] This embodiment also provides an engineering machine. (Refer to...) Figures 1 to 4 As shown, the construction machinery includes a frame 5 and the aforementioned vibration-absorbing assembly. Specifically, a drive axle 51 is mounted on the frame 5, and the base plate 11 of the vibration-absorbing assembly is fixed to the frame 5. The first direction is the width direction of the frame 5, the second direction is the length direction of the frame 5, and the third direction is the height direction of the frame 5. Specifically, the first, second, and third directions correspond to the width, length, and height directions of the frame 5, respectively. The first vibration-absorbing component 2 can absorb vibrations in the length and width directions of the frame 5, and the second vibration-absorbing component 3 can absorb vibrations in the length and height directions of the frame 5, thereby reliably absorbing vibrations in the length, width, and height directions of the frame 5, and comprehensively and effectively attenuating vibrations on the construction machinery.

[0054] In this embodiment, a third mounting hole is provided on the base plate 11, and a corresponding third connecting hole is provided on the frame 5. The third fastener 43 passes through the third mounting hole and the third connecting hole and is used to fix the base plate 11 and the frame 5. The base plate 11 and the frame 5 are fixedly connected by the third fastener 43, which is simple in structure and easy to install.

[0055] For example, the third fastener 43 is configured as a third screw-in connector, the third connecting hole is a threaded hole, and the third screw-in connector passes through the third mounting hole and the third connecting hole for threaded connection. Specifically, the third screw-in connector can be a screw or a bolt.

[0056] For example, the number of third screw connectors, third connecting holes, and third mounting holes can be configured in a one-to-one correspondence.

[0057] For example, the following describes the parameter determination process of the first vibration absorption component 2 and the second vibration absorption component 3, using a certain electric loader as an example.

[0058] For the first vibration-absorbing component 2, since the vibration acceleration in the second direction, i.e., the length direction of the frame 5, is relatively large, the calculation is performed according to the second direction. Based on the measured resonant frequency f = 356Hz of the main drive of the drive axle 51, the calculated angular frequency w = 2πf, stiffness kx / mass m = w2, the preset mass m of the first mass block 23 is 1kg, and the tangential stiffness of the first vibration-absorbing component is kx = w2*m = 5003N / mm; the measured vibration acceleration of the front axle at 356Hz in the first direction is Gx = 0.38g, the vibration acceleration in the second direction is Gy = 0.32g, the mass of the front axle is M = 1330kg, and its force in the second direction is checked by 2 times Fx = 2*M*Gx = 9905N; the preset maximum allowable displacement of the first mass block 23 in the first and second directions is Sx = 3mm, and the calculated excitation force Fxc = kx*Sx / 1000 = 15010N, Fxc > Fx, which meets the requirements. Therefore, the final parameters are: the mass of the first mass block 23 is 1kg, and the tangential stiffness of the first vibration absorber is 5003N / mm.

[0059] For the second vibration-absorbing component 3, based on the measured resonant frequency f = 356Hz of the main drive of the drive axle 51, the calculated angular frequency w = 2πf, stiffness k / mass m = w², the preset mass of the second mass block 33 is m = 2.5kg, and the tangential stiffness of the second vibration-absorbing component is k = w² * m = 12508N / mm; the measured Z-axis vibration acceleration of the front axle at 356Hz is Gz = 1.2g, the front axle mass is M = 1330kg, and its third-axis force is checked at twice the normal value Fz = 2 * M * Gz = 31281N; the preset maximum allowable third-axis vibration displacement of the second mass block 33 is Sz = 3mm, and the calculated excitation force Fzc = k * Sz / 1000 = 37525N, Fzc > Fz, which meets the requirements. Therefore, the final parameters are: the mass of the second mass block 33 is 2.5kg, and the tangential stiffness of the second vibration-absorbing component is 12508N / mm.

[0060] The engineering machinery provided in this embodiment can be a loader or other types of machinery.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vibration-absorbing assembly, characterized in that, include: The base (1) includes a base plate (11) and a first mounting plate (12) and a second mounting plate (13) disposed on the base plate (11), wherein the first mounting plate (12) is parallel to a first direction and the second mounting plate (13) is parallel to a third direction; The first vibration absorption component (2) is disposed on the first mounting plate (12) and is used to absorb vibrations in the first direction and the second direction. The second vibration absorption component (3) is disposed on the second mounting plate (13) and is used to absorb vibrations in the second direction and the third direction. The first direction, the second direction, and the third direction are set orthogonally to each other.

2. The vibration-absorbing assembly according to claim 1, characterized in that, The first vibration absorption assembly (2) includes a first support (21), a first vibration absorption member and a first mass block (23). The first support (21) is fixed on the first mounting plate (12), the first vibration absorption member is disposed on the first support (21), and the first mass block (23) is disposed on the first vibration absorption member. The second vibration absorption assembly (3) includes a second support (31), a second vibration absorption member, and a second mass block (33). The second support (31) is fixed on the second mounting plate (13), the second vibration absorption member is disposed on the second support (31), and the second mass block (33) is disposed on the second vibration absorption member.

3. The vibration-absorbing assembly according to claim 2, characterized in that, The first support (21) has a first mounting hole (211), the first mounting plate (12) has a corresponding first connecting hole, the first fastener (41) passes through the first mounting hole (211) and the first connecting hole, and fixes the first support (21) and the first mounting plate (12) in a fixed manner. The second support (31) has a second mounting hole (311), and the second mounting plate (13) has a corresponding second connecting hole. The second fastener (42) passes through the second mounting hole (311) and the second connecting hole, and fixes the second support (31) and the second mounting plate (13) in a fixed manner.

4. The vibration-absorbing assembly according to claim 3, characterized in that, The first fixing member (41) is set as the first screw connector, the first connecting hole is a threaded hole, and the first screw connector passes through the first mounting hole (211) and the first connecting hole for threaded connection; The second fastener (42) is configured as a second screw connector, the second connecting hole is a threaded hole, and the second screw connector passes through the second mounting hole (311) and the second connecting hole for threaded connection.

5. The vibration-absorbing assembly according to claim 2, characterized in that, The first vibration absorber includes a plurality of first vibration absorber columns (22) connected between the first support (21) and the first mass block (23), and the second vibration absorber includes a plurality of second vibration absorber columns (32) connected between the second support (31) and the second mass block (33).

6. The vibration-absorbing assembly according to claim 5, characterized in that, The first vibration-absorbing column (22) and the second vibration-absorbing column (32) are both made of rubber.

7. The vibration-absorbing assembly according to claim 1, characterized in that, The first mounting plate (12) is connected to the second mounting plate (13) on one side along the first direction.

8. The vibration-absorbing assembly according to claim 1, characterized in that, The base plate (11), the first mounting plate (12) and the second mounting plate (13) are integrally formed.

9. An engineering machinery, characterized in that, include: A frame (5) on which a drive axle (51) is provided; In the vibration-absorbing assembly as described in any one of claims 1-8, the base plate (11) is fixed to the frame (5); the first direction is the width direction of the frame (5), the second direction is the length direction of the frame (5), and the third direction is the height direction of the frame (5).

10. The engineering machinery according to claim 9, characterized in that, The base plate (11) has a third mounting hole, and the frame (5) has a corresponding third connecting hole. The third fastener (43) passes through the third mounting hole and the third connecting hole and is fixedly connected to the base plate (11) and the frame (5).

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