Eddy current damping shock absorber and engineering machinery

Abstract

The utility model discloses an eddy current damping shock absorber and engineering machinery, and belongs to the technical field of shock absorption devices, the eddy current damping shock absorber comprises a support outer frame configured at a shock absorption point position, a magnet installed on the support outer frame, and a metal sheet used for cutting magnetic lines generated by the magnet; wherein the metal sheet is used for being assembled on a component needing shock absorption and synchronously vibrates along with the component; the metal sheet is configured to cut magnetic lines of force generated by the magnet in the vibration process so as to form eddy current of a closed loop on the surface of the metal sheet, and then a reverse magnetic field is formed and forms damping with an original magnetic field, so that vibration of the component is restrained, and the damping effect is achieved. Damping force is provided through the eddy current technology to achieve vibration suppression, the damping effect cannot be weakened along with time, and the service life of a damping system can be prolonged. Meanwhile, the metal sheet is connected to the external electronic equipment, quantified vibration data can be obtained, and analysis and monitoring of the vibration strength of the component are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of shock absorption device technology, specifically, it relates to a shock absorber that uses eddy current technology to provide damping force. Background Technology

[0002] With the increasing electrification of construction machinery and equipment, many precision electrical components need to be added to their electrical control systems, such as power distribution units (PDUs), battery drive units (BDUs), and battery packs. Generally speaking, the more precise the electrical components, the higher the reliability requirements and the more stringent the requirements for vibration suppression from external sources and the components themselves.

[0003] To meet the vibration suppression requirements of these electrical components, suitable rubber vibration isolation pads are typically selected, combined with a reasonable mechanical structure design to achieve vibration isolation support. However, since vibration isolation pads are made of rubber, and rubber is prone to aging over time, the damping effect of the pads weakens or even becomes ineffective. Therefore, regular inspection and replacement are required, which is inconvenient.

[0004] In addition, the vibration intensity of the equipment cannot be collected using rubber vibration isolation pads, making it impossible to quantitatively monitor the vibration intensity. Summary of the Invention

[0005] This invention addresses at least one of the aforementioned technical problems in the prior art by proposing an eddy current damping shock absorber. It employs electromagnetic induction technology to generate eddy currents, and the reverse electromagnetic field generated by the eddy currents forms a damping force to suppress the vibration of related components, thereby achieving a shock absorption effect.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] In one aspect, this utility model proposes an eddy current damping shock absorber, comprising:

[0008] Support frame, which is used to be positioned at the damping point;

[0009] A magnet, mounted on the supporting outer frame, is used to generate a magnetic field;

[0010] A metal sheet is used to be mounted on a component that requires vibration damping and vibrates synchronously with the component; during vibration, the metal sheet cuts the magnetic lines of force generated by the magnet, generating a damping force to suppress the vibration of the component.

[0011] In some embodiments of this application, a top plate, a bottom plate, an intermediate carrier plate, and a side plate can be configured in the supporting outer frame; wherein, the magnet is mounted on the bottom plate, the intermediate carrier plate is located between the top plate and the bottom plate and is used to support the component that needs to be damped, and the side plate connects to and supports the bottom plate, the top plate, and the intermediate carrier plate to ensure the overall strength of the supporting outer frame.

[0012] In some embodiments of this application, to facilitate the installation of eddy current damping shock absorbers, the damping point can be selected at the corner of the component requiring damping; that is, the supporting frame of the shock absorber is installed at the corner of the component requiring damping. For this installation method, two side plates can be configured within the supporting frame, connected to form corner plates. This not only increases the support strength for the bottom plate, top plate, and intermediate carrier plate, but also covers the outer periphery of the corner of the component requiring damping, providing protection against impacts.

[0013] In some embodiments of this application, open areas can be formed on the top plate and the intermediate carrier plate of the supporting outer frame, respectively; a U-shaped permanent magnet is selected to generate the original magnetic field, and the connecting side of the U-shaped permanent magnet can be installed on the bottom plate of the supporting outer frame, with the open side passing through the open areas of the top plate and the intermediate carrier plate to facilitate the insertion of the metal sheet; the metal sheet is configured to be inserted into the U-shaped groove formed by the permanent magnet after being installed on the component that needs vibration damping, so as to cut the magnetic lines of force generated by the permanent magnet, form a reverse magnetic field, and form damping with the original magnetic field to suppress the vibration of the component in the original direction.

[0014] In another aspect, this utility model also proposes an engineering machinery, including electrical components with vibration isolation requirements, said electrical components being mounted on a component support, and a shock absorber being mounted on the component support, said shock absorber comprising:

[0015] The supporting frame is located at the shock-absorbing points of the component bracket;

[0016] A magnet, mounted on the supporting outer frame, is used to generate a magnetic field;

[0017] A metal sheet is mounted on a part support and vibrates synchronously with the part support. During the vibration, the metal sheet cuts the magnetic lines of force generated by the magnet, generating a damping force to suppress the vibration of the part support.

[0018] In some embodiments of this application, a top plate, a bottom plate, an intermediate carrier plate, and a side plate can be configured in the supporting outer frame; wherein, the top plate is located above the part support; the bottom plate is located below the part support and the magnet is mounted thereon; the intermediate carrier plate is located between the bottom plate and the top plate, and the part support can be supported on the intermediate carrier plate and confined between the intermediate carrier plate and the top plate; the side plate connects and supports the bottom plate, the top plate, and the intermediate carrier plate to ensure the overall strength of the supporting outer frame.

[0019] In some embodiments of this application, to prevent collisions between the component support and the top plate and intermediate carrier plate supporting the outer frame, the bottom surface of the component support can be configured to rest on the intermediate carrier plate via cushioning cotton, and the top surface of the component support can be separated from the top plate by cushioning cotton. Adding cushioning cotton can also absorb some of the vibration of the component support, improving the shock absorption effect.

[0020] In some embodiments of this application, to enable the shock absorber of this application to be adaptably installed on component supports of different shapes, the supporting outer frame can be arranged at the corners of the component support, and two side plates can be configured within the supporting outer frame to form corner plates, thereby covering the outer periphery of the corners of the component support. Configuring two side plates to form corner plates not only increases the support strength of the side plates for the bottom plate, top plate, and intermediate carrier plate, but also facilitates the assembly and disassembly of electrical components and their supports as a whole, while also providing protection.

[0021] In some embodiments of this application, open areas can be formed on the top plate and the intermediate carrier plate of the supporting frame, respectively; a U-shaped permanent magnet is selected to generate the original magnetic field, and the connecting side of the U-shaped permanent magnet is installed on the bottom plate of the supporting frame, with the open side passing through the open areas of the top plate and the intermediate carrier plate; the metal sheet is mounted on the part support through an insulating component to prevent the induced eddy current generated on the metal sheet from being conducted to the part support when the metal sheet cuts the magnetic lines of force generated by the U-shaped permanent magnet, thus generating unnecessary current effects. Simultaneously, the metal sheet is configured to be inserted into the U-shaped groove formed by the permanent magnet along a direction parallel to the two pole plates of the U-shaped permanent magnet, so as to perpendicularly cut the magnetic lines of force generated by the permanent magnet, maximizing the generated induced eddy currents and thereby obtaining the best vibration damping effect.

[0022] In some embodiments of this application, multiple shock absorbers can be configured in the engineering machinery and distributed at each corner of the part support to achieve balanced shock absorption of the part support.

[0023] Compared with the prior art, the advantages and positive effects of this utility model are mainly reflected in:

[0024] 1. This utility model designs a shock absorber based on electromagnetic induction technology. A magnet generates the original magnetic field, and a metal plate vibrates synchronously with the vibrating component, cutting the magnetic lines of force of the original magnetic field and generating induced eddy currents. After the induced eddy currents are formed on the surface of the metal plate, a magnetic field opposite to the original magnetic field is generated around it, which then forms damping with the original magnetic field, preventing the vibrating component from vibrating in its original direction, thus achieving a shock absorption effect.

[0025] 2. This utility model uses eddy current technology to provide damping force to suppress vibration. The damping effect will not weaken over time, thus solving the problem that the existing technology of rubber damping pads is prone to aging and failure, and extending the service life of the damping system.

[0026] 3. The eddy current damping shock absorber of this utility model is configured on the support of the parts that support the precision electrical components. By suppressing the vibration of the support, the vibration isolation requirements of the electrical components are met, thereby simplifying the structural design of the electrical components themselves.

[0027] 4. By connecting the eddy current damping shock absorber of this utility model to an external electronic device, quantified vibration data can be obtained for analysis and monitoring of the vibration intensity of the vibrating component.

[0028] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly described 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 any creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the eddy current damping shock absorber and the component support proposed in this utility model after assembly.

[0031] Figure 2 yes Figure 1 Exploded structural diagram;

[0032] Figure 3 yes Figure 1 A magnified view of a portion of the image;

[0033] Figure 4 yes Figure 3 Another structural diagram from a different perspective;

[0034] Figure 5 yes Figure 2 A schematic diagram of the structure of one embodiment of the supporting outer frame;

[0035] Figure 6 yes Figure 2 A schematic diagram of the structure of one embodiment of the cushioning cotton in the image;

[0036] Figure 7 yes Figure 2 A schematic diagram of the structure of one embodiment of the metal sheet in the image;

[0037] Figure 8 This is a diagram illustrating the working principle of magnetic field lines generated when a metal sheet cuts a magnet.

[0038] In the diagram, 100 is the component support; 110 is the side panel; 120 is the side panel; 130 is the crossbeam; 200 is the eddy current damping shock absorber; 210 is the outer support frame; 211 is the top plate; 212 is the bottom plate; 213 is the intermediate carrier plate; 214 is the side plate; 215 is the open area; 216 is the open area; 220 is the magnet; 230 is the metal sheet; 231 is the insulating component; 232 is the connecting lug; 240 is the cushioning cotton; and 250 is the cushioning cotton. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral molding, or an internal connection of components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In the description of the embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0042] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] To balance damping performance and service life, this embodiment proposes an eddy current damping damper 200 based on electromagnetic induction technology. Figure 1 , Figure 2 As shown, it mainly includes key components such as the supporting outer frame 210, magnet 220, and metal sheet 230.

[0044] The supporting outer frame 210 is configured at the shock absorption point and carries the magnet 220.

[0045] like Figure 5 As shown, the supporting outer frame 210 of this embodiment mainly includes a top plate 211, a bottom plate 212, a middle carrier plate 213, and a side plate 214.

[0046] The base plate 212 can be designed as a flat plate on which magnets 220 are mounted. In some embodiments, in order to make the shock absorber 200 effective for a long time, a U-shaped permanent magnet 220 can be used to generate a magnetic field, which works in conjunction with the metal sheet 230 to generate a damping force.

[0047] When installing the U-shaped permanent magnet 220 on the base plate 212, the bottom connecting side of the U-shaped permanent magnet 220 can be fixed on the base plate 212, and the opening side of the U-shaped permanent magnet 220 faces the top plate 211.

[0048] The top plate 211 is located above the bottom plate 212, and an open area 215 can be formed on it for the opening side of the U-shaped permanent magnet 220 to pass through.

[0049] The intermediate carrier plate 213 is located between the top plate 211 and the bottom plate 212 and is used to support components that require vibration damping. If a U-shaped permanent magnet 220 is selected, an open area 216 can also be formed on the intermediate carrier plate 213. Its shape and opening position can be consistent with the open area 215 formed on the top plate 211, so that the U-shaped permanent magnet 220 can pass through.

[0050] The top plate 211, bottom plate 212 and intermediate carrier plate 213 are respectively installed on the side plate 214 to form a support frame 210 with a certain support strength.

[0051] For components requiring vibration damping that are precision electrical parts in the electrical control system of engineering machinery, since precision electrical parts are usually mounted on the component support 100, and the component support 100 vibrates synchronously with the electrical parts, vibration damping points can be selected on the component support 100. By suppressing the vibration of the component support 100, the vibration of the electrical parts can be prevented, which simplifies the structural design of the electrical parts themselves.

[0052] Choosing the vibration damping point on the component bracket 100 simplifies the structural design by eliminating the need to modify electrical components. Furthermore, the component bracket 100 typically employs a frame structure, such as... Figure 1 As shown, there are many hollowed-out areas, which makes it convenient for the eddy current damping shock absorber 200 of this embodiment to be assembled in a suitable position.

[0053] To enable the eddy current damping shock absorber 200 of this embodiment to be adapted to component supports 100 with different structures and shapes, the damping point can be selected at the corner of the component support 100, such as... Figure 1 As shown, this is done to minimize any impact on the inherent arrangement of electrical components on the component support 100.

[0054] For situations where the eddy current damping shock absorber 200 is positioned at the corner of the component support 100, two side plates 214 can be installed in the outer support frame 210, such as... Figure 5 As shown. The two side plates 214 are connected to form a corner plate shape. The two adjacent sides of the top plate 211, bottom plate 212 and intermediate carrier plate 213 are respectively connected to the two side plates 214 to improve the overall strength of the supporting frame 210.

[0055] When the support frame 210 is installed at the corner of the component bracket 100, two side plates 214 are configured to cover the outer periphery of the corner of the component bracket 100. On the one hand, this ensures that at least two sides of the component bracket 100 are supported on the support frame 210, making the assembly between the support frame 210 and the component bracket 100 more stable. On the other hand, it facilitates the assembly and disassembly of electrical components and their component bracket 100 as a whole, while also protecting the component bracket 100.

[0056] When open areas 215 and 216 are formed on the top plate 211 and intermediate carrier plate 213 supporting the outer frame 210, the shape and location of the open areas 215 and 216 can be adapted to the shape and location of the hollowed-out areas at the corners of the part bracket 100. For example, see Figure 1 If, in addition to the two side arms 110 and 120, there is a crossbeam 130 adjacent to the corner of the part support 100, the top plate 211 and the intermediate carrier plate 213 can be designed as U-shaped so that the two side arms 110 and 120 and the crossbeam 130 of the part support 100 can all be mounted on the intermediate carrier plate 213, thereby improving the stability of the shock absorber 200 mounted on the part support 100.

[0057] After the support frame 210 is installed on the part bracket 100, the top plate 211 of the support frame 210 is located above the part bracket 100, the intermediate carrier plate 213 is located below the part bracket 100, the part bracket 100 is supported on the intermediate carrier plate 213, and is limited to the intermediate carrier plate 213 and the top plate 211.

[0058] To prevent the part support 100 from colliding with the top plate 211 and intermediate carrier plate 213 of the supporting outer frame 210 during vibration, a buffer cotton 240 can be added between the bottom surface of the part support 100 and the intermediate carrier plate 213 of the supporting outer frame 210. Figure 2As shown, a buffer cotton 250 is added between the top surface of the part bracket 100 and the top plate 211 of the supporting outer frame 210 to achieve a flexible interval.

[0059] The shape and size of the cushioning cotton 240 and 250 can be adapted to the shape and size of the top plate 211 and the intermediate carrier plate 213 supporting the outer frame 210, such as... Figure 6 As shown, for example, it is also designed in a U-shape, which can absorb some of the energy generated by the vibration of the component support 100 while preventing collisions, and play an auxiliary role in shock absorption.

[0060] Of course, other flexible materials other than rubber and other easily aging materials can be used to replace the buffer cotton 240 and 250, and placed between the supporting outer frame 210 and the part bracket 100 to achieve the dual effect of anti-collision and auxiliary shock absorption.

[0061] The U-shaped permanent magnet 220 is vertically installed on the base plate 212 of the supporting outer frame 210, with the opening side passing through the open areas 215 and 216 of the top plate 211 and the intermediate carrier plate 213 of the supporting outer frame 210, as shown. Figure 3 , Figure 4 As shown. The metal sheet 230 is mounted on the part support 100 and inserted into the U-shaped groove formed by the permanent magnet 220 to cut the magnetic lines of force and generate induced eddy currents.

[0062] In some embodiments, the metal sheet 230 can be designed as a semi-oblong shape, such as... Figure 7 As shown, the metal sheet 230 is configured to fit the groove shape of the U-shaped permanent magnet 220. The two semi-circular opposing surfaces of the metal sheet 230 are parallel to and directly opposite the N and S poles of the U-shaped permanent magnet 220, respectively, so as to perpendicularly cut the magnetic lines of force generated by the U-shaped permanent magnet 220, thereby maximizing the eddy currents induced on the surface of the metal sheet 230.

[0063] The metal sheet 230 is installed on the part support 100 and vibrates synchronously with the part support 100, with the vibration direction perpendicular to the magnetic field lines generated by the U-shaped permanent magnet 220.

[0064] If the component support 100 is made of a conductive material, an insulating component 231 can be used to connect the metal sheet 230 and the component support 100, such as... Figure 3 , Figure 4 As shown, this is to prevent the eddy currents induced on the metal sheet 230 from being conducted to the part support 100, thus preventing unnecessary current effects.

[0065] When part supports 100 are distributed on both sides of the metal sheet 230 (the two straight sides of the semi-circular metal sheet), a connecting lug 232 can be provided on each side of the metal sheet 230, such as... Figure 7As shown, each connecting ear 232 is connected to the part support 100 via an insulating member 231, and is fixed at two points to enhance the stability of the metal sheet 230 on the part support 100.

[0066] In this embodiment, the metal sheet 230 is preferably made of copper, which not only has low resistivity and low loss, but is also non-magnetic and will not affect the magnetic field distribution. At the same time, copper sheets have good mechanical properties, are easy to process, do not rust, offer good safety and stability, and have a long service life.

[0067] Industrial applicability

[0068] The eddy current damping shock absorber of this embodiment is applied to engineering machinery to perform vibration reduction treatment on electrical components (such as power distribution units, battery drive units, battery packs, etc.) that have strict requirements for vibration isolation.

[0069] In specific installation, the eddy current damping shock absorber 200 of this embodiment can be installed on the component support 100 where these electrical components are located. Preferably, one eddy current damping shock absorber 200 is installed at each corner of the component support 100 to improve the shock absorption effect.

[0070] Each eddy current damping shock absorber 200 has its metal sheet 230 insulatedly installed on the side 110 and / or crossbeam 130 of each corresponding corner of the component support 100, so that the metal sheet 230 can vibrate synchronously with the component support 100 and vertically cut the magnetic lines of force generated by the magnet 220 during the vibration process to generate the maximum damping force.

[0071] Specifically, such as Figure 8 As shown, for the U-shaped permanent magnet 220, the magnetic field lines it generates point from the N pole to the S pole. A metal plate 230 is inserted into the U-shaped groove formed by the permanent magnet 220 along a direction parallel to the two pole plates of the permanent magnet 220. When the metal plate 230 vibrates up and down with the part support 100, the metal plate 230 reciprocates within the U-shaped groove of the permanent magnet 220 along the direction of entering and exiting the U-shaped groove, thereby perpendicularly cutting the magnetic field lines generated by the permanent magnet 220. The changing magnetic flux forms closed-loop eddy currents on the surface of the metal plate 230. The intensity of the eddy currents is related to the rate of change of magnetic flux, the resistivity of the conductor, and the geometry.

[0072] After induced eddy currents are generated on the metal sheet 230, the eddy currents will generate a reverse magnetic field that is opposite to the original magnetic field generated by the permanent magnet 220. This reverse magnetic field will then form a damping effect with the original magnetic field, preventing the component support 100 from vibrating in the original direction and achieving a vibration reduction effect.

[0073] Specifically, the metal sheet 230 can be viewed as a set of coils distributed in concentric circles along its edge. When the coils move towards the magnetic field, as... Figure 8 In the left diagram, according to Lenz's law, the magnetic field generated by the induced current in the coil is opposite in direction to the original magnetic field. That is, the S pole of permanent magnet 220 points to the N pole of the induced magnetic field, and the N pole of permanent magnet 220 points to the S pole of the induced magnetic field. According to Ampere's right-hand rule, the direction of the eddy current is clockwise; conversely, when the coil is away from the magnetic field, as... Figure 8 In the right figure, the direction of the induced magnetic field in the coil is the same as the direction of the original magnetic field. According to Ampere's right-hand rule, the direction of the eddy current is counterclockwise.

[0074] To quantitatively monitor the vibration intensity of electrical components, the metal plate 230 can be electrically connected to an external detection circuit. The detection circuit collects the induced electromotive force generated on the metal plate 230, and then the rate of change of magnetic flux is obtained according to Faraday's law. After integration, the magnetic flux can be obtained. Based on the magnetic flux and the rate of change of magnetic flux, combined with the volume, resistivity, and effective magnetic flux area of ​​the metal plate 230, the damping force and eddy current loss power can be calculated.

[0075] The magnitude and waveform changes of damping force can indirectly reflect the vibration of electrical components, facilitating analysis and monitoring by technicians.

[0076] Of course, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. An eddy current damping shock absorber, characterized in that, include: Support frame, which is used to be positioned at the damping point; A magnet, mounted on the supporting outer frame, is used to generate a magnetic field; A metal sheet is used to be mounted on a component that requires vibration damping and vibrates synchronously with the component; during vibration, the metal sheet cuts the magnetic lines of force generated by the magnet, generating a damping force to suppress the vibration of the component.

2. The eddy current damping shock absorber according to claim 1, characterized in that, The supporting outer frame includes: roof; The base plate on which the magnet is mounted; An intermediate carrier plate, located between the top plate and the bottom plate, is used to support the components that require vibration damping; Side plates connect to and support the bottom plate, top plate, and intermediate carrier plate.

3. The eddy current damping shock absorber according to claim 2, characterized in that, The supporting outer frame is used to be installed at the corners of components that require vibration damping; The side plate comprises two plates connected to form a corner plate, used to cover the outer periphery of the corner of the component requiring shock absorption.

4. The eddy current damping shock absorber according to claim 2 or 3, characterized in that, Open areas are formed on the top plate and the intermediate carrier plate of the supporting outer frame, respectively; The magnet is a U-shaped permanent magnet, with its connecting side installed on the bottom plate of the supporting outer frame and its opening side passing through the open area of ​​the top plate and the intermediate carrier plate; After the metal sheet is installed on the component that requires vibration damping, it is inserted into the U-shaped groove formed by the permanent magnet.

5. An engineering machinery comprising electrical components requiring vibration isolation, the electrical components being mounted on a component support, and a shock absorber being mounted on the component support; characterized in that, The shock absorber includes: The supporting frame is located at the shock-absorbing points of the component bracket; A magnet, mounted on the supporting outer frame, is used to generate a magnetic field; A metal sheet is mounted on a part support and vibrates synchronously with the part support. During the vibration, the metal sheet cuts the magnetic lines of force generated by the magnet, generating a damping force to suppress the vibration of the part support.

6. The engineering machinery according to claim 5, characterized in that, The supporting outer frame includes: Top plate, which is located above the component support; A base plate, located below the part support, on which the magnet is mounted; An intermediate carrier plate is located between the bottom plate and the top plate, and the part support is supported on the intermediate carrier plate and is limited to being located between the intermediate carrier plate and the top plate; Side plates connect to and support the bottom plate, top plate, and intermediate carrier plate.

7. The engineering machinery according to claim 6, characterized in that, The bottom surface of the part support is supported on the intermediate carrier plate by cushioning cotton, and the top surface of the part support is separated from the top plate by cushioning cotton.

8. The engineering machinery according to claim 6, characterized in that, The supporting outer frame is arranged at the corners of the part bracket; The side plate comprises two plates, which are connected to form corner plates and cover the outer periphery of the corners of the part bracket.

9. The engineering machinery according to claim 6, characterized in that, Open areas are formed on the top plate and the intermediate carrier plate of the supporting outer frame, respectively; The magnet is a U-shaped permanent magnet, with its connecting side installed on the bottom plate of the supporting outer frame and its opening side passing through the open area of ​​the top plate and the intermediate carrier plate; The metal sheet is mounted on the component support via an insulating component and inserted into the U-shaped groove formed by the permanent magnet in a direction parallel to the two pole plates of the U-shaped permanent magnet, so as to vertically cut the magnetic lines of force generated by the permanent magnet.

10. The engineering machinery according to any one of claims 5 to 9, characterized in that, The shock absorbers include multiple units, which are distributed at each corner of the component support.

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