Damping and noise reduction device and engineering machinery

Abstract

The utility model relates to engineering machinery technical field discloses shock absorption and noise reduction device and engineering machinery, engineering machinery includes oil pump and frame, shock absorption and noise reduction device includes first support, first support, fixed frame and first shock absorber, first support is used for fixing in frame, first support is connected with first support, and is suspended and sets up, fixed frame sets up in first support, is used for supporting the fixed oil pump, first shock absorber is connected in fixed frame and between support, is used for supporting fixed frame, the utility model discloses the fixed frame of supporting oil pump is fixed in first support through first shock absorber, and first shock absorber can absorb the noise produced in the working process of oil pump, owing to first support suspended and set up, further suppresses the noise transmission to operating room through frame, reduces the interference to operator.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to vibration reduction and noise reduction devices and engineering machinery. Background Technology

[0002] In construction machinery, a hydraulic pump is typically included, welded to the chassis via a bracket. The noise generated during pump operation is directly transmitted to the operator's cab, affecting the work experience. For example, when an all-terrain crane performs luffing, telescopic, or winching operations, noise is transmitted through the chassis to the operator's cab, impacting their work. Therefore, new connection solutions need to be designed to reduce noise transmission. Utility Model Content

[0003] In view of this, the present invention provides a vibration reduction and noise reduction device and engineering machinery to solve the problem that the noise of the oil pump during operation is directly transmitted to the control room and affects the operation.

[0004] In a first aspect, this utility model provides a vibration damping and noise reduction device for use in engineering machinery, the engineering machinery including an oil pump and a frame, the vibration damping and noise reduction device comprising: a first support for fixing to the frame; a first bracket connected to the first support and suspended in the air; a fixed frame disposed on the first bracket for supporting and fixing the oil pump; and a first shock absorber connected between the fixed frame and the bracket for supporting the fixed frame.

[0005] Beneficial effects: The mounting bracket used to support the oil pump is fixed to the first support through the first shock absorber. The first shock absorber can absorb the noise generated during the operation of the oil pump. Since the first support is suspended, the noise is further suppressed from being transmitted to the operator's cab through the frame, reducing interference to the operator.

[0006] In one optional embodiment, the first bracket includes an upper suspension plate, a lower support plate, and a connecting plate, the connecting plate being connected between the upper suspension plate and the lower support plate, and the connecting plate being fixedly connected to the first support; the first shock absorber includes an upper shock absorber and a lower shock absorber, the upper shock absorber being connected between the upper suspension plate and the fixed frame, and the lower shock absorber being connected between the lower support plate and the fixed frame, the upper shock absorber and the lower shock absorber jointly supporting the fixed frame.

[0007] Beneficial effects: The mounting bracket is connected to the first support through the upper and lower shock absorbers, which can further absorb the noise generated during the operation of the oil pump and reduce the noise transmitted to the operator's cab through the frame.

[0008] In one alternative embodiment, the upper suspension plate, the lower support plate, and the connecting plate form a receiving groove, and the fixing frame portion is located within the receiving groove.

[0009] Beneficial effects: It can make the entire shock absorption and noise reduction device structure more compact, the layout of each bracket (first support, first bracket and fixing frame) more reasonable, and can be easily installed even when the vehicle frame space is limited, so as to achieve reliable shock absorption and noise transmission suppression.

[0010] In one optional embodiment, the fixing frame includes a fixing body, an upper support plate, and a lower support plate. The upper support plate is connected to the upper part of the fixing body, and the lower support plate is connected to the lower part of the fixing body. The upper support plate and the lower support plate are staggered in the left-right direction and correspond to the upper suspension plate and the lower support plate, respectively. The upper support plate is connected to the upper suspension plate through the upper shock absorber, and the lower support plate is connected to the lower support plate through the lower shock absorber.

[0011] Beneficial effects: The fixed frame includes a fixed body, an upper support plate, and a lower support plate. The upper support plate is connected to the upper suspension plate through an upper shock absorber, and the lower support plate is connected to the lower support plate through a lower shock absorber, which facilitates installation and maintenance and improves installation and maintenance efficiency.

[0012] In one alternative embodiment, the fixed body is provided with a through hole, through which the oil pump passes and is fixedly connected to the fixed body.

[0013] Beneficial effects: It can achieve oil pump fixation and vibration reduction without significantly altering the overall structure of the mounting bracket, thereby reducing costs.

[0014] In one alternative embodiment, the upper suspension plate, the lower support plate, and the connecting plate are integrally formed parts.

[0015] Beneficial effects: The upper suspension plate, lower support plate and connecting plate are integrally molded parts, which can improve the rigidity of the first support and enhance the stability of the support.

[0016] In one optional embodiment, the vibration damping and noise reduction device further includes an auxiliary vibration damping component, which includes a second support, a second bracket, and a second shock absorber. The second support is used to fix the device to the vehicle frame, and the second shock absorber is connected between the second bracket and the second support. The second bracket is used to support the tail of the oil pump.

[0017] Beneficial effects: The vibration reduction device also includes a second support, a second bracket, and a second shock absorber, which support and dampen the tail of the oil pump. It can provide better support and damping effect for high-power and long oil pumps.

[0018] In one alternative implementation, both the first shock absorber and the second shock absorber are rubber blocks.

[0019] Beneficial effects: Rubber blocks have good shock absorption and vibration damping properties, and provide more stable support; they also have good chemical stability and are more durable.

[0020] Secondly, this utility model also provides an engineering machine, including a frame; an oil pump; and a shock absorption and noise reduction device as described in the first aspect above, wherein the first support is fixed to the frame, the fixed frame supports the oil pump, and there is a gap between the first support and the frame.

[0021] Beneficial effects: In this embodiment of the engineering machinery, the mounting bracket supporting the oil pump is fixed to the first bracket by the first shock absorber. The first shock absorber can absorb the noise generated during the operation of the oil pump. Since the first bracket is suspended, the noise is further suppressed from being transmitted to the operator's cab through the frame, reducing interference to the operator.

[0022] In one optional embodiment, the construction machinery further includes an engine, a gearbox, a power take-off (PTO), and a drive shaft, wherein the gearbox is connected between the engine and the PTO, and the drive shaft is connected between the PTO and the oil pump. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a front view of the oil pump supporting the shock absorption and noise reduction device according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the vibration reduction and noise reduction device according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the fixing frame according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the first support according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the auxiliary support component according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the connection structure of the oil pump during operation according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Vibration and noise reduction device; 2-Oil pump; 4-Engine; 5-Gearbox; 6-Drive shaft; 7-Power take-off; 10-First support; 20-First bracket; 21-Upper suspension plate; 22-Lower support plate; 23-Connecting plate; 30-Fixed frame; 31-Fixed body; 311-Through hole; 32-Upper support plate; 33-Lower support plate; 40-Shock absorber; 41-Upper shock absorber; 42-Lower shock absorber; 50-Second support; 60-Second bracket; 61-Adjustment hole; 70-Second shock absorber; A-Receiving groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0034] According to an embodiment of this utility model, a vibration damping and noise reduction device 1 is provided for use in construction machinery, which includes an oil pump 2 and a frame. The vibration damping and noise reduction device 1 is used to support the oil pump 2, absorb the noise generated during the operation of the oil pump 2, suppress the transmission of noise to the operator's cab, and reduce interference to the operator.

[0035] The vibration damping and noise reduction device 1 includes a first support 10, a first bracket 20, a fixing frame 30, and a first shock absorber 40. The first support 10 is used to fix it to the vehicle frame. The first bracket 20 is connected to the first support 10 and is suspended in the air. The fixing frame 30 is disposed on the first bracket 20 and is used to support and fix the oil pump 2. The first shock absorber 40 is connected between the fixing frame 30 and the first bracket 20 and is used to support the fixing frame 30.

[0036] The first support 10 can be welded to the vehicle frame. Alternatively, it can be fixed to the vehicle frame using bolts or other fasteners. In this embodiment, the first support 10 is fixed to the vehicle frame by welding.

[0037] The first bracket 20 can be connected to the first support 10 by fasteners such as bolts, or it can be fixed by welding. In the embodiment of this application, the first bracket 20 is fixed to the first support 10 by bolts. The first bracket 20 is suspended, meaning that there is a gap between the bottom of the first bracket 20 and the vehicle frame, that is, the first bracket 20 does not directly contact the vehicle frame.

[0038] The mounting bracket 30 supports and fixes the oil pump 2, and can be secured to the oil pump 2 with bolts or other fasteners. A first shock absorber 40 is connected between the mounting bracket 30 and the first bracket 20. The mounting bracket 30 is also suspended, meaning it does not directly contact the vehicle frame. The first shock absorber 40 is used to support and fix the mounting bracket 30. The first shock absorber 40 can be connected to the upper part of the mounting bracket 30 to support the mounting bracket 30 in a suspended manner. The first shock absorber 40 can also be connected to the bottom of the mounting bracket 30 to support the mounting bracket 30 in a support manner. The first shock absorber 40 can be a rubber pad, which can be fixed between the mounting bracket 30 and the first bracket 20 with bolts.

[0039] During installation, as an example, the first support 10 can be welded to the frame, and the first bracket 20 can be fixed to the first support 10 with bolts, making it suspended with a gap between it and the frame. The mounting bracket 30 is connected to the first bracket 20 through the shock absorber 40, and the oil pump 2 is mounted and fixed to the mounting bracket 30 with bolts.

[0040] The mounting bracket 30 for supporting the oil pump 2 is fixed to the first bracket 20 by the first shock absorber 40. The first shock absorber 40 can absorb the noise generated during the operation of the oil pump 2. Since the first bracket 20 is suspended, the noise is further suppressed from being transmitted to the operator's cab through the frame, reducing the interference to the operator.

[0041] In some embodiments, the first bracket 20 includes an upper suspension plate 21, a lower support plate 22, and a connecting plate 23. The connecting plate 23 is connected between the upper suspension plate 21 and the lower support plate 22, and is fixedly connected to the first support 10. The first shock absorber 40 includes an upper shock absorber 41 and a lower shock absorber 42. The upper shock absorber 41 is connected between the upper suspension plate 21 and the fixed frame 30, and the lower shock absorber 42 is connected between the lower support plate 22 and the fixed frame 30. The upper shock absorber 41 and the lower shock absorber 42 together support the fixed frame 30.

[0042] The connecting plate 23 can be fixed to the first support 10 by bolts. The upper suspension plate 21, the lower support plate 22, and the connecting plate 23 can be integrally formed. There is a gap between the lower support plate 22 and the frame to allow the first bracket 20 to be suspended. The number of upper shock absorbers 41 and lower shock absorbers 42 can each be two. The two upper shock absorbers 41 can be spaced apart along the length of the oil pump 2. The two lower shock absorbers 42 can be spaced apart along the length of the oil pump 2.

[0043] The mounting bracket 30 is connected to the first bracket 20 via the upper shock absorber 41 and the lower shock absorber 42, which can further absorb the noise generated during the operation of the oil pump 2 and reduce the noise transmitted to the operator's cab via the frame.

[0044] In some embodiments, the upper suspension plate 21, the lower support plate 22, and the connecting plate 23 form a receiving groove A, and the fixing frame 30 is partially located within the receiving groove A.

[0045] The upper suspension plate 21, lower support plate 22, and connecting plate 23 can roughly form a C-shaped structure. Figure 4 (As shown). The upper suspension plate 21 and the lower support plate 22 are arranged opposite to each other. The first bracket 20 covers part of the fixing frame 30, and the fixing frame 30 is inserted into the receiving groove A. The top of the fixing frame 30 is connected to the upper suspension plate 21 through the upper shock absorber 41, and the bottom of the fixing frame 30 is connected to the lower support plate 22 through the lower shock absorber 42.

[0046] As a result, the entire shock absorption and noise reduction device 1 can be made more compact, and the layout of each bracket (first support 10, first bracket 20 and fixing bracket 30) can be more reasonable. Even when the vehicle frame space is limited, it can be easily installed, achieving reliable shock absorption and noise transmission suppression.

[0047] In some embodiments, the fixing frame 30 includes a fixing body 31, an upper support plate 32 and a lower support plate 33. The upper support plate 32 is connected to the upper part of the fixing body 31, and the lower support plate 33 is connected to the lower part of the fixing body 31. Both the upper support plate 32 and the lower support plate 33 are located within the accommodating space. The upper support plate 32 is connected to the upper suspension plate 21 through an upper shock absorber 41, and the lower support plate 33 is connected to the lower support plate 22 through a lower shock absorber 42.

[0048] The fixed body 31 is used to fix and support the oil pump 2. The fixed body 31 can be a square frame structure, with the upper support plate 32 and the lower support plate 33 protruding from one side of the square frame in the thickness direction. The upper support plate 32 corresponds to the position of the upper suspension plate 21, and the lower support plate 33 corresponds to the position of the lower support plate 22. The fixed body 31, the upper support plate 32, and the lower support plate 33 can be an integral structural component. The upper support plate 32 and the lower support plate 33 are used to support and fix the upper shock absorber 41 and the lower shock absorber 42, respectively, while the fixed body 31 is used to support and fix the oil pump.

[0049] The fixing frame 30 includes a fixing body 31, an upper support plate 32 and a lower support plate 33. The upper support plate 32 is connected to the upper suspension plate 21 through an upper shock absorber 41, and the lower support plate 33 is connected to the lower support plate 22 through a lower shock absorber 42, which facilitates installation and maintenance and improves installation and maintenance efficiency.

[0050] Along the left-right direction Y, the upper support plate 32 and the lower support plate 33 are staggered, allowing the upper shock absorber 41 and the lower shock absorber 42 to be staggered in the left-right direction Y, thus improving the stability of the support. This can absorb vibrations from different directions, further improving the noise reduction effect.

[0051] In some embodiments, the fixed body 31 is provided with a through hole 311, through which the oil pump 2 passes and is fixedly connected to the fixed body 31.

[0052] The main cylinder of the oil pump 2 can pass through the through hole 311 and be fixedly connected to the fixed body 31 by bolts or other fasteners. The figure shows the oil pump 2 being fixed to the fixed body 31 by four bolts.

[0053] During installation, the first support 10 can be welded to the vehicle frame, and the first bracket 20 can be fixed to the first support 10 with bolts. The fixing bracket 30 is inserted into the groove formed by the upper suspension plate 21, the lower support plate 22, and the connecting plate 23, so that the upper support plate 32 corresponds to the upper suspension plate 21, and the lower support plate 33 corresponds to the lower support plate 22. Then, the upper shock absorber 41 is connected between the upper support plate 32 and the upper suspension plate 21, and the lower shock absorber 42 is connected between the lower support plate 33 and the lower support plate 22. The vibration damping and noise reduction device 1 is now installed. Next, the oil pump 2 is passed through the through hole 311 on the fixing body 31, and the oil pump 2 is fixed to the fixing bracket 30 with four bolts.

[0054] In some embodiments, the vibration damping and noise reduction device 1 further includes a second support 50, a second bracket 60, and a second shock absorber 70. The second support 50 is used to fix to the vehicle frame, the second shock absorber 70 is connected between the second bracket 60 and the second support 50, and the second bracket is used to support the tail of the oil pump 2.

[0055] The second support 50 can be welded to the frame. The second support 50 can be a bent structure, including a vertical plate and a horizontal plate. The vertical plate is welded to the frame, and the horizontal plate is used to support and fix the bottom of the second shock absorber 70.

[0056] The second bracket 60 is located above the second support 50 and is used to support the tail of the oil pump 2. The second bracket 60 can also be a bending mechanism, with its vertical plate connected to the tail of the oil pump 2 by bolts, and its horizontal plate connected to the top of the second shock absorber 70. Thus, the second shock absorber 70 is connected between the second support 50 and the second bracket 60. The second shock absorber 70 can be a rubber block.

[0057] Optionally, the second bracket 60 may be provided with an adjustment hole 61 extending in the vertical direction Z for fasteners to pass through. The installation position of the fasteners can be easily adjusted through the adjustment hole 61, thereby improving installation efficiency.

[0058] The vibration reduction device 1 also includes a second support 50, a second bracket 60, and a second shock absorber 70, which support and dampen the tail of the oil pump 2, providing better support and damping for the high-power, long-length oil pump 2.

[0059] According to an embodiment of the present invention, in a second aspect, an engineering machine is provided, including a frame, an oil pump 2, and a shock absorption and noise reduction device 1 according to any of the embodiments of the first aspect. The first support 10 of the shock absorption and noise reduction device 1 is fixed to the frame, the fixing bracket 30 supports the oil pump 2, and a gap exists between the first bracket 20 and the frame.

[0060] The chassis is the basic support structure of the entire equipment, supporting major components such as the engine, transmission system, cab, boom, turntable, and counterweight, ensuring that these components remain firmly connected during operation and preventing deformation or failure due to uneven stress.

[0061] Oil pump 2 is the core power component of the hydraulic system of construction machinery (such as cranes). Its main function is to convert mechanical energy (rotational power of engine or electric motor) into hydraulic energy, providing high-pressure oil to the entire hydraulic system to drive various actuators. For example, it can perform luffing, telescopic, and winching operations.

[0062] The vibration damping and noise reduction device 1 is used to support the oil pump 2, absorb the noise generated during the operation of the oil pump 2, suppress the transmission of noise to the control room, and reduce interference to the operators.

[0063] The first support 10 can be welded to the vehicle frame. Alternatively, it can be fixed to the vehicle frame using bolts or other fasteners. In this embodiment, the first support 10 is fixed to the vehicle frame by welding. The mounting bracket 30 supports and fixes the oil pump 2, and the oil pump 2 can be fixed using bolts or other fasteners.

[0064] In this embodiment of the engineering machinery, the mounting bracket 30 supporting the oil pump 2 is fixed to the first bracket 20 by the first shock absorber 40. The first shock absorber 40 can absorb the noise generated during the operation of the oil pump 2. Since the first bracket 20 is suspended, the noise is further suppressed from being transmitted to the operator's cab through the frame, reducing the interference to the operator.

[0065] Construction machinery includes earthmoving machinery, compaction machinery, hoisting machinery, piling machinery, concrete machinery, road machinery, mining machinery, and tunnel machinery. Earthmoving machinery includes excavators, loaders, bulldozers, graders, scrapers, and trenchers. Compaction machinery includes road rollers and tampers. Hoisting machinery includes truck cranes, tower cranes, and crawler cranes. Piling machinery includes pile drivers, rotary drilling rigs, and static pile drivers. Concrete machinery includes concrete pump trucks, mixer trucks, and pavers. Tunnel machinery includes tunnel boring machines (TBMs), rock drilling rigs, and tunnel boring machines.

[0066] In some embodiments, refer to Figure 6The construction machinery also includes an engine 4, a gearbox 5, a power take-off (PTO) 7, and a drive shaft 6. The gearbox 5 connects the engine 4 and the PTO 7, and the drive shaft 6 connects the PTO 7 and the oil pump 2. Along the longitudinal direction X, the engine 4, gearbox 5, PTO 7, and drive shaft 6 are arranged sequentially.

[0067] Engine 4 serves as the power source, outputting rotational mechanical energy through its output shaft. Gearbox 5 is directly connected to the engine's output shaft, transmitting power and regulating speed and torque via a clutch or torque converter. Power take-off (PTO) 7 is mounted on a dedicated interface on the side of gearbox 5, connecting to the intermediate shaft of gearbox 5 via gears or a chain to distribute a portion of the power. Driveshaft 6 connects to the PTO output at one end and to the input shaft of the hydraulic pump at the other, transmitting rotational power. Hydraulic pump 2 is directly connected to the driveshaft via a coupling or flange, converting mechanical energy into hydraulic energy.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application, are intended to cover non-exclusive inclusion. In the description of embodiments of this application, technical terms such as "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of embodiments of this application, "a plurality of" means two or more, unless otherwise expressly and specifically defined. The reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0069] In the description of the embodiments of this application, the technical terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0070] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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 the embodiments of this application according to the specific circumstances.

[0071] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A vibration damping and noise reduction device, characterized in that, For use in construction machinery, the construction machinery including an oil pump and a chassis, the shock absorption and noise reduction device includes: The first support is used to fix the vehicle frame; The first bracket is connected to the first support and is suspended in the air; A mounting bracket, disposed on the first support, is used to support the oil pump; The first shock absorber is connected between the fixed frame and the support, and is used to support the fixed frame.

2. The vibration damping and noise reduction device according to claim 1, characterized in that, The first bracket includes an upper suspension plate, a lower support plate, and a connecting plate. The connecting plate is connected between the upper suspension plate and the lower support plate, and the connecting plate is fixedly connected to the first support. The first shock absorber includes an upper shock absorber and a lower shock absorber. The upper shock absorber is connected between the upper suspension plate and the upper part of the fixed frame, and the lower shock absorber is connected between the lower support plate and the bottom of the fixed frame. The upper shock absorber and the lower shock absorber together support the fixed frame.

3. The vibration damping and noise reduction device according to claim 2, characterized in that, The upper suspension plate, the lower support plate, and the connecting plate form a receiving groove, and the fixing frame portion is located within the receiving groove.

4. The vibration damping and noise reduction device according to claim 3, characterized in that, The fixing frame includes a fixing body, an upper support plate and a lower support plate. The upper support plate is connected to the upper part of the fixing body, and the lower support plate is connected to the lower part of the fixing body. The upper support plate and the lower support plate are staggered in the left and right direction and correspond to the upper suspension plate and the lower support plate, respectively. The upper support plate is connected to the upper suspension plate via the upper shock absorber, and the lower support plate is connected to the lower support plate via the lower shock absorber.

5. The vibration damping and noise reduction device according to claim 4, characterized in that, The fixed body is provided with a through hole, and the oil pump passes through the through hole and is fixedly connected to the fixed body.

6. The vibration damping and noise reduction device according to claim 3, characterized in that, The upper suspension plate, the lower support plate, and the connecting plate are integrally formed parts.

7. The vibration damping and noise reduction device according to any one of claims 1-6, characterized in that, The vibration damping and noise reduction device further includes an auxiliary vibration damping component, which includes a second support, a second bracket, and a second shock absorber. The second support is used to fix the device to the vehicle frame, and the second shock absorber is connected between the second bracket and the second support. The second bracket is used to support the tail of the oil pump.

8. The vibration damping and noise reduction device according to claim 7, characterized in that, Both the first shock absorber and the second shock absorber are rubber blocks.

9. An engineering machinery, characterized in that, include: Frame; Oil pump; The vibration damping and noise reduction device according to any one of claims 1-8, wherein the first support is fixed to the vehicle frame, the fixed frame supports the oil pump, and there is a gap between the first support and the vehicle frame.

10. The engineering machinery according to claim 9, characterized in that, The engineering machinery also includes: An engine, a gearbox, a power take-off (PTO), and a driveshaft, wherein the gearbox is connected between the engine and the PTO, and the driveshaft is connected between the PTO and the oil pump.

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