Multi-degree-of-freedom magnetic attraction structure, magnetic attraction box cover, loader counterweight and vehicle

Abstract

The utility model provides a multi-degree-of-freedom magnetic attraction structure, a magnetic attraction box cover, a loader balance weight and a vehicle. Belongs to the technical field of magnetic products. The multi-degree-of-freedom magnetic attraction structure comprises a fixing plate used for carrying a magnet; the magnet is arranged on one side of the fixing plate, and a through center hole is formed in the middle of the magnet; the fixing piece is used for connecting the magnet with the fixing plate; the magnet and the fixing piece are movably connected, so that the magnet has multiple degrees of freedom. The magnetic suction box cover comprises a shell, a hole is formed in the shell, a cover plate capable of being opened and closed is arranged at the hole, a multi-degree-of-freedom magnetic suction structure is arranged on the shell, and when the cover plate is closed, the cover plate can be connected with the magnet in a magnetic suction mode. The loader counterweight comprises a multi-degree-of-freedom magnetic attraction structure and / or a magnetic attraction box cover. The vehicle comprises a multi-degree-of-freedom magnetic attraction structure and / or a magnetic attraction box cover and / or a loader balance weight. The adsorption force can be effectively improved, the structural stability is enhanced, and the device has the advantages of being high in adaptability and easy and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of magnetic products technology, and in particular to a multi-degree-of-freedom magnetic attraction structure, a magnetic box cover, a loader counterweight, and a vehicle. Background Technology

[0002] In existing magnetic attraction structures, magnets are typically fixedly mounted on a flat surface for adsorption and connection with magnetic materials such as steel plates. When the fixed magnet contacts the flat surface of the steel plate, the flatness of the contact surface is required to ensure effective transmission of magnetic force and structural stability. However, in practical applications, due to factors such as material processing precision, installation errors, or deformation after long-term use, the steel plate and magnet often fail to achieve an ideal, complete fit. This directly leads to a reduction in the contact area between the magnet and the steel plate, thereby affecting the overall attraction force and structural strength. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a multi-degree-of-freedom magnetic suction structure, a magnetic suction box cover, a loader counterweight, and a vehicle.

[0004] The technical solution to the technical problem solved by this utility model is as follows:

[0005] Firstly, this technical solution proposes a multi-degree-of-freedom magnetic attraction structure, including:

[0006] A mounting plate for holding magnets; and

[0007] A magnet is positioned on one side of the fixed plate, and a through-hole is formed in the center of the magnet; and

[0008] A fastener is used to connect a magnet to a fixed plate; the magnet and the fastener are connected in a movable manner, giving the magnet multiple degrees of freedom; wherein:

[0009] One end of the fixing member freely passes through the central hole and is connected to the fixing plate; the other end of the fixing member is connected to the magnet, and this end does not extend beyond the outside of the magnet, forming a built-in hidden structure; a gap is left between the inner side of the magnet and the fixing plate for the magnet to move and adjust; the plane on the outer side of the magnet forms a magnetic surface for adsorbing magnetically attracted materials.

[0010] Preferably, the fastener is a bolt.

[0011] Preferably, the bolt includes a threaded rod, and the fixing plate has a mounting hole, which is a blind hole with internal threads; one end of the threaded rod is threadedly connected to the blind hole.

[0012] Preferably, the bolt includes a threaded rod and a nut, the fixing plate has a mounting hole, the mounting hole is a through hole, and one end of the threaded rod passes through the mounting hole and is threadedly connected to the nut.

[0013] Preferably, the center hole is a countersunk hole, which includes a large-diameter hole and a small-diameter hole coaxially connected; the bolt includes a threaded rod and a head, with the head fixedly connected to one end of the threaded rod; the outer diameter of the head is smaller than the inner diameter of the large-diameter hole, and the outer diameter of the threaded rod is smaller than the inner diameter of the small-diameter hole, forming a clearance fit.

[0014] Preferably, the magnet includes a pot-shaped base with a receiving cavity, a positioning post at the center of the base, the positioning post being disposed in the receiving cavity, and an annular region being formed between the positioning post and the base, in which a permanent magnet is installed; the positioning post has a through cavity at its center, and the permanent magnet has a central hole at its center, allowing the positioning post to be fitted and inserted into the central hole; a shock-absorbing washer is provided between the permanent magnet and the inner wall of the base.

[0015] Preferably, a spring is fitted onto the fixing member, one end of the spring being connected to the fixing plate and the other end being connected to the magnet.

[0016] Secondly, this technical solution proposes a magnetic box cover, including a shell, the shell having an opening, the opening having an openable and closable cover plate, and the shell having a multi-degree-of-freedom magnetic attraction structure; when the cover plate is closed, the cover plate can be magnetically connected to the magnet; one end of the cover plate is hinged to the shell, and the inner wall of the cover plate has a groove that can accommodate the magnet, and when attracted, one end of the magnet enters the groove.

[0017] Thirdly, this technical solution proposes a loader counterweight, including the aforementioned multi-degree-of-freedom magnetic suction structure and / or the aforementioned magnetic suction box cover.

[0018] Fourthly, this technical solution also proposes a vehicle, including the aforementioned multi-degree-of-freedom magnetic structure and / or magnetic box cover and / or loader counterweight.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] 1. The multi-degree-of-freedom magnetic attraction structure proposed in this utility model can effectively improve the attraction force and enhance structural stability. By setting the magnet as a movable and adjustable multi-degree-of-freedom structure, an automatic adjustment mechanism is introduced. The magnet will automatically adapt to the unevenness of the steel plate surface, and through minute planar rotation adjustment, ensure a tight fit with the steel plate and maximize the contact area between the magnet and the steel plate, thereby improving the attraction force of the magnetic attraction structure and effectively solving the structural stability problem caused by the unevenness of the steel plate surface in traditional magnetic attraction structures. This structure also has the advantages of strong adaptability and simple installation, and is suitable for steel plates with various flatness error ranges, thus improving the applicability of the magnetic attraction structure; it connects the magnet and the fixing plate with bolts, making installation simple and quick.

[0021] 2. The magnet adopts a structure of base, permanent magnet and shock-absorbing pad. The base provides effective protection, making the magnet less prone to breakage and providing high impact resistance. At the same time, the designed shock-absorbing pad can reduce vibration and noise, and has a long service life.

[0022] 3. The multi-degree-of-freedom magnetic suction structure proposed in this utility model has a spring between the fixed plate and the magnet. The compression of the spring can provide a certain amount of displacement compensation. In particular, when applied to magnetic suction box covers, this structure can ensure an effective seal between the cover plate and the shell, solving the problems of difficult positioning and high installation accuracy required during the installation of multi-degree-of-freedom magnetic suction structures. This makes it easier for workers to install and improves the sealing between the cover plate and the shell, reducing the entry of dust.

[0023] 4. This utility model proposes a multi-degree-of-freedom magnetic suction structure with a wide range of applications and high versatility. It can be applied to fields including but not limited to magnetic suction box covers, maintenance doors, charging ports, loader counterweights, and various vehicles, and is highly practical. Attached Figure Description

[0024] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0025] Figure 1 This is a three-dimensional structure of one embodiment of a multi-degree-of-freedom magnetic attraction structure. Figure 1 .

[0026] Figure 2 This is one embodiment of a multi-degree-of-freedom magnetic attraction structure, with a three-dimensional structure. Figure 2 .

[0027] Figure 3 This is a side view of another embodiment of a multi-degree-of-freedom magnetic attraction structure.

[0028] Figure 4 This is a schematic diagram of the magnet structure in a multi-degree-of-freedom magnetic attraction structure. Figure 1 .

[0029] Figure 5 yes Figure 4 Exploded view of the structure of the magnet.

[0030] Figure 6 This is a schematic diagram of the magnetic box lid (lid open).

[0031] Figure 7 This is a schematic diagram of the magnetic box lid (lid closed).

[0032] Figure 8 This is a side view of a multi-degree-of-freedom magnetic attraction structure (with springs).

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Fixing plate; 2. Magnet; 21. Base; 211. Receiving cavity; 22. Positioning post; 221. Through cavity; 23. Permanent magnet; 231. Center hole; 2311. Small diameter hole; 2312. Large diameter hole; 24. Shock-absorbing washer; 3. Fixing component; 31. Nut; 32. Spring; 4. Housing; 5. Cover plate; 51. Groove; 52. Handle; 6. Battery charging port; 7. Base; 8. Hinge. Detailed Implementation

[0035] To make the objectives, features, and advantages of this utility model more apparent and understandable, 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 embodiments described below are only some embodiments of this utility model, and 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.

[0036] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0037] Furthermore, it should be noted that, in the description of this utility model, 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, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Example 1:

[0039] like Figure 1 - Figure 2 As shown, this embodiment proposes a multi-degree-of-freedom magnetic attraction structure. By designing a magnetic attraction structure with self-adjusting capabilities, the magnet 2 can automatically adjust its position within a certain range according to the planar position of the steel plate, thereby achieving effective adhesion to uneven surfaces and improving structural strength and adsorption stability. It mainly includes:

[0040] A mounting plate 1 for supporting the magnet 2, serving as a carrier; the magnet 2, positioned on one side of the mounting plate 1, with a through-hole 231 in its center as a mounting channel; and a fastener 3 for connecting the magnet 2 to the mounting plate 1, serving as a connector; the magnet 2 and the fastener 3 are movably connected, allowing the magnet 2 to have multiple degrees of freedom for adjustment. Specifically, this method can employ the following structure:

[0041] One end of the fixing member 3 freely passes through the central hole 231 and connects to the fixing plate 1; the other end of the fixing member 3 is connected to the magnet 2, and this end does not extend beyond the outer side of the magnet 2, forming an internal hidden structure; a gap is left between the inner side of the magnet 2 and the fixing plate 1 for the magnet 2 to be moved and adjusted; the plane on the outer side of the magnet 2 forms a magnetic surface for adsorbing magnetically absorbable materials. In this embodiment, the inner side is defined as the side of the magnet 2 closer to the fixing plate 1, and the outer side is defined as the side of the magnet 2 away from the fixing plate 1.

[0042] It should be noted that in this embodiment, the gap between the magnet 2 and the fixing plate 1 can be 1-2 mm, so that the magnet 2 is not completely fixed to the surface of the fixing plate 1, giving it a certain degree of freedom of movement.

[0043] Considering the selection of fastener 3, and based on the perspective of economy and practicality, in this embodiment, fastener 3 is preferably a bolt. Regarding the installation of the bolt, there are two methods:

[0044] The first method:

[0045] Reference Appendix Figure 1 Or attached Figure 2 In this embodiment, the bolt includes a threaded rod, and the fixing plate 1 has a mounting hole (not marked in the figure). This mounting hole is a blind hole with internal threads; one end of the threaded rod is threadedly connected to the blind hole. In this embodiment, the bolt can be a round-head screw.

[0046] The second method:

[0047] Reference Appendix Figure 3 In this embodiment, the bolt includes a threaded rod and a nut 31. The fixing plate 1 has a mounting hole, which is a through hole. One end of the threaded rod passes through the mounting hole and is threadedly connected to the nut 31. The nut 31 is pressed and positioned on the side of the fixing plate 1.

[0048] The above text mentions that one end of fastener 3 has a built-in concealed structure. Regarding this structural form, the following method can be adopted:

[0049] In this embodiment, the central hole 231 is a countersunk hole. The central hole 231 includes a large-diameter hole 2312 and a small-diameter hole 2311 coaxially connected. The large-diameter hole 2312 and the small-diameter hole 2311 form a tapered countersunk hole structure. The bolt component mentioned above includes a threaded rod and a head. The head is fixedly connected to one end of the threaded rod, which is a conventional structure. The outer diameter of the head is smaller than the inner diameter of the large-diameter hole 2312, and the outer diameter of the threaded rod is smaller than the inner diameter of the small-diameter hole 2311, forming a clearance fit. This allows the magnet 2 to have a certain degree of freedom of movement.

[0050] Additionally, it should be noted that the shape of the magnet 2 includes, but is not limited to, circular, square, and rectangular shapes. In this embodiment, the magnet 2 is preferably circular.

[0051] Application results:

[0052] Firstly, the multi-degree-of-freedom magnetic attraction structure can effectively improve the attraction force and enhance the structural stability. By setting the magnet 2 as a movable and adjustable multi-degree-of-freedom structure, an automatic adjustment mechanism is introduced. The magnet 2 will automatically adapt to the unevenness of the steel plate surface and make adjustments through minute planar rotations to ensure a tight fit with the steel plate and maximize the contact area between the magnet 2 and the steel plate, thereby improving the attraction force of the magnetic attraction structure and effectively solving the structural stability problem caused by the unevenness of the steel plate surface in traditional magnetic attraction structures.

[0053] Secondly, the structure also has the advantages of strong adaptability and easy installation, and is suitable for steel plates with various flatness error ranges, which improves the applicability of the magnetic attraction structure; it connects the magnet 2 and the fixing plate 1 with bolts, making installation simple and quick.

[0054] Example 2:

[0055] Reference Appendix Figure 4 and attached Figure 5The other structures are the same as in Embodiment 1. The difference is that the structure of magnet 2 is further optimized in this embodiment. This is because if magnet 2 is not properly protected, it may be fragile during magnetic attraction and collision. Therefore, further improvements have been made.

[0056] In this embodiment, the magnet 2 includes a pot-shaped base 21 with a receiving cavity 211. The base 21 forms an outer steel sleeve around the magnet 2, providing good protection. A positioning post 22 is located at the center of the base 21 and is placed in the receiving cavity 211. An annular area is formed between the positioning post 22 and the base 21, and a permanent magnet 23 is installed in this annular area. A through cavity 221 is opened at the center of the positioning post 22, and a central hole 231 is provided at the center of the permanent magnet 23. The positioning post 22 can be fitted and inserted into the central hole 231 to facilitate the installation of the permanent magnet 2. A shock-absorbing washer 24 is provided between the permanent magnet 23 and the inner wall of the base 21 to provide protection, changing the rigid contact to a flexible contact, thus providing good protection.

[0057] Example 3:

[0058] refer to Figure 6 - Figure 8 This embodiment proposes a magnetic box cover, including a shell 4, with an opening in the shell 4 and an openable and closable cover plate 5 at the opening. The shell 4 is provided with a multi-degree-of-freedom magnetic attraction structure as in Embodiment 1 or Embodiment 2. Specifically, a base 7 is welded to the shell 4, and the fixing plate 1 in the multi-degree-of-freedom magnetic attraction structure is connected to the base 7. The connection method includes, but is not limited to, welding, bolting, etc. When the cover plate 5 is closed, the cover plate 5 can be magnetically connected to the magnet 2.

[0059] In this embodiment, one end of the cover plate 5 is hinged to the housing 4, which can be connected by a hinge 8; the inner wall of the cover plate 5 is provided with a groove 51 that can accommodate the magnet 2. When adsorbed, one end of the magnet 2 enters the groove 51. The reason for designing the groove 51 is to ensure that the cover plate 5 can make relatively tight contact with the edge of the opening when it is fastened, so as to ensure the sealing.

[0060] To facilitate opening the cover plate 5, a handle 52 is provided on the outer wall of the cover plate 5.

[0061] If the cover plate 5 is required to make a sealed contact with the edge of the opening, then the installation accuracy of the magnet 2 is required, which means that the position needs to be constantly adjusted during installation to ensure the installation accuracy, which is relatively troublesome. In order to solve this problem, the multi-degree-of-freedom magnetic attraction structure in this embodiment can be improved as follows:

[0062] A spring 32 is added between the magnet 2 and the fixing plate 1. The spring 32 is sleeved on the fixing component 3, with one end of the spring 32 connected to the fixing plate 1 and the other end connected to the magnet 2. By designing the spring 32, a certain amount of displacement compensation can be achieved through the compression of the spring 32. In particular, when applied to magnetic box covers, this structure can ensure an effective seal between the cover plate 5 and the housing 4, solving the problems of difficult positioning and high installation accuracy required during the installation of multi-degree-of-freedom magnetic structures. This facilitates installation by workers and improves the sealing performance between the cover plate 5 and the housing 4, reducing dust ingress.

[0063] Another point is that the introduction of spring 32 can also play a certain role in shock absorption. When the cover plate 5 is closed, the cover plate 5 collides with the magnet 2. The spring 32 plays a certain role in buffering, thereby reducing the impact force and extending the service life.

[0064] Example 4:

[0065] This embodiment also proposes a loader counterweight, which includes a multi-degree-of-freedom magnetic structure and / or the aforementioned magnetic cover. The structural form of the loader counterweight can be referenced from the applicant's previously filed patents, such as a counterweight structure for an underground loader (application number 2023225799499) and a counterweight structure for an electric loader (2023214536837). The loader counterweight is equipped with a battery and a battery charging port 6, and the battery charging port 6 can be sealed using the aforementioned magnetic cover.

[0066] Example 5:

[0067] This technical solution also proposes a vehicle, including a multi-degree-of-freedom magnetic structure and / or a magnetic box cover and / or a loader counterweight. The vehicle includes, but is not limited to, tractors, loaders, forklifts, etc.

[0068] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A multi-degree-of-freedom magnetic attraction structure, characterized in that, include: A mounting plate (1) for mounting the magnet (2); and A magnet (2) is disposed on one side of a fixed plate (1), and a through-hole (231) is provided in the middle of the magnet (2); and A fastener (3) is used to connect the magnet (2) to the fixing plate (1); the magnet (2) and the fastener (3) are connected in a movable manner so that the magnet (2) has multiple degrees of freedom; wherein: One end of the fixing member (3) freely passes through the central hole (231) and is connected to the fixing plate (1); the other end of the fixing member (3) is connected to the magnet (2), and the end does not extend beyond the outside of the magnet (2), forming a built-in hidden structure; a gap is left between the inner side of the magnet (2) and the fixing plate (1) for the magnet (2) to be moved and adjusted; the plane on the outer side of the magnet (2) forms a magnetic surface for adsorbing magnetically absorbable materials.

2. The multi-degree-of-freedom magnetic attraction structure according to claim 1, characterized in that, The fastener (3) is a bolt.

3. The multi-degree-of-freedom magnetic attraction structure according to claim 2, characterized in that, The bolt includes a threaded rod, and the fixing plate (1) has a mounting hole, which is a blind hole with internal threads; one end of the threaded rod is threadedly connected to the blind hole.

4. The multi-degree-of-freedom magnetic attraction structure according to claim 2, characterized in that, The bolt includes a threaded rod and a nut (31). The fixing plate (1) has an installation hole, which is a through hole. One end of the threaded rod passes through the installation hole and is threadedly connected to the nut (31).

5. A multi-degree-of-freedom magnetic attraction structure according to claim 2, characterized in that, The center hole (231) is a countersunk hole, which includes a large-diameter hole (2312) and a small-diameter hole (2311) coaxially connected; the bolt includes a threaded rod and a head, the head being fixedly connected to one end of the threaded rod; the outer diameter of the head is smaller than the inner diameter of the large-diameter hole (2312), and the outer diameter of the threaded rod is smaller than the inner diameter of the small-diameter hole (2311), forming a clearance fit.

6. The multi-degree-of-freedom magnetic attraction structure according to claim 5, characterized in that, The magnet (2) includes a base (21) with a receiving cavity (211) and a pot shape. A positioning post (22) is provided at the center of the base (211). The positioning post (22) is located in the receiving cavity (211). An annular area is formed between the positioning post (22) and the base (21). A permanent magnet (23) is installed in the annular area. A through cavity (221) is opened at the center of the positioning post (22). The permanent magnet (23) has a central hole (231) at the center. The positioning post (22) can be fitted and inserted into the central hole (231). A shock-absorbing washer (24) is provided between the permanent magnet (23) and the inner wall of the base (21).

7. The multi-degree-of-freedom magnetic attraction structure according to claim 1, characterized in that, A spring (32) is fitted on the fixing member (3). One end of the spring (32) is connected to the fixing plate (1), and the other end is connected to the magnet (2).

8. A magnetic box lid, characterized in that, The device includes a housing (4), which has an opening and a cover plate (5) that can be opened and closed. The housing (4) is provided with a multi-degree-of-freedom magnetic attraction structure as described in any one of claims 1-6. When the cover plate (5) is closed, the cover plate (5) can be magnetically attracted to the magnet (2). One end of the cover plate (5) is hinged to the housing (4), and the inner wall of the cover plate (5) is provided with a groove (51) that can accommodate the magnet (2). When attracted, one end of the magnet (2) enters the groove (51).

9. A loader counterweight, characterized in that, Includes the multi-degree-of-freedom magnetic suction structure as described in any one of claims 1-6 and / or the magnetic suction box lid as described in claim 8.

10. A vehicle, characterized in that, Includes the multi-degree-of-freedom magnetic suction structure as described in any one of claims 1-6 and / or the magnetic suction box cover as described in claim 8 and / or the loader counterweight as described in claim 9.

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