Magnet dismounting and mounting tool and mounting and dismounting method for magnetic circuit assembly of vibration test stand

Abstract

The invention discloses a magnet dismounting and mounting tool for a magnetic circuit assembly of a vibration test stand and a mounting and dismounting method, and the tool comprises an opening and closing unit which employs a guide column to penetrate through a yoke and a magnetic ring to achieve coaxial positioning; the distance adjusting screw is provided with a front small-pitch section and a rear large-pitch section which are in threaded connection with the magnetic conductive ring and the yoke respectively, and separation and closing of the yoke and the magnetic conductive ring are achieved through rotation; the retainer is detachably fixed on the end face of the magnetic conducting ring, and a U-shaped positioning groove of the retainer separates the limiting magnet; a magnet guide groove is formed in the circumferential direction of the annular structure of the limiting guide frame and is coaxially butted with the U-shaped groove to form a continuous guide channel; and the magnet push-and-pull assembly drives a non-magnetic push-and-pull rod to push and pull the magnet along the continuous guide channel through a screw rod mechanism. During installation, the yoke and the magnetic conductive ring are separated firstly, the magnet is pushed into the U-shaped groove through the guide channel to be positioned, and then the magnet is folded and clamped; and the magnet is pulled out by reverse operation during disassembly. The problems of difficult positioning, high magnetic interference risk, limited operation space and low efficiency in magnet disassembly and assembly are solved.

Description

Technical Field

[0001] The invention relates to the technical field of vibration test benches, and in particular to a magnet disassembly tool and an installation and disassembly method of a magnetic circuit component of a vibration test bench. Background Art

[0002] Aircraft engine turbine blades are subjected to extremely complex load environments during operation. Their structural reliability is directly related to flight safety and requires repeated testing on vibration test benches of different frequencies. The equipment and test site costs for these tests are extremely high. At the same time, the high-frequency vibrations during vibration testing can easily damage the magnets in the magnetic circuit components of the vibration test bench, requiring frequent replacement.

[0003] The core power source of the widely used electric vibration test benches relies on a high-performance magnetic circuit assembly. One design includes a magnetic ring with yokes positioned at the upper and lower ends of the ring. Between the ring and the yoke is a magnetic ring composed of circumferentially spaced magnets, forming a vertical magnetic field. A central magnetic pole corresponding to the magnetic ring is positioned on the lower yoke, creating a magnetic field air gap between the ring and the central magnetic pole. While the cross-sectional area of ​​the air gap remains constant, the height of the magnets can be changed to vary the cross-sectional area of ​​the magnets, thereby changing the magnetic induction intensity of the air gap and, consequently, the electromagnetic thrust of the vibration bench, meeting the testing requirements of turbine blades for different electromagnetic thrust vibration benches.

[0004] However, during the replacement of the magnet, due to the strong magnetic force of the magnet used in the vibration test bench, magnetic interference will occur between the installation and disassembly processes, making positioning extremely difficult and prone to the risk of magnet splashing and collision. Traditional installation generally requires the use of additional clamping tooling to limit the installation of the magnet. To prevent the tooling from affecting the magnetic field output strength of the magnet, the clamping tooling needs to be removed after the installation is completed. The operation is extremely cumbersome. In addition, the distance between the magnetic ring and the yoke iron in the magnetic circuit assembly of the vibration test bench is narrow, the operating space is limited, and tools are difficult to reach, resulting in low efficiency in disassembly and assembly.

[0005] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a magnet disassembly and assembly tool and an installation and disassembly method for the magnetic circuit assembly of a vibration test bench to solve the above problems.

[0006] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be assumed that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the present invention. Summary of the Invention

[0007] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the present invention is to disclose a magnet disassembly and assembly tool and an installation and disassembly method for the magnetic circuit assembly of a vibration test bench, so as to solve the problems of inaccurate positioning, high operational risks, insufficient operating space, low efficiency and online switching of magnets of different heights during the traditional magnet disassembly and assembly process.

[0008] The present invention discloses a magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench, comprising:

[0009] The opening and closing unit includes a pitch-adjusting screw and at least two guide columns, which can axially penetrate the yoke and the magnetic ring and be slidably connected thereto to achieve coaxial positioning of the yoke and the magnetic ring; the pitch-adjusting screw includes a front thread segment and a rear thread segment, the pitch and outer diameter of the front thread segment are smaller than the pitch and outer diameter of the rear thread segment; the front thread segment can be threadedly connected to the magnetic ring to form a first thread pair; the rear thread segment can be threadedly connected to the yoke to form a second thread pair; different pitches are used to make the relative displacement of the pitch-adjusting screw with the yoke and the magnetic ring different when it rotates, thereby controlling the distance between the yoke and the magnetic ring, so that the yoke and the magnetic ring have a clamping function while meeting the clamping requirements of magnets of different heights.

[0010] The retaining frame is detachably fixed to the upper and lower end faces of the magnetic ring. The outer periphery of the retaining frame is provided with a U-shaped positioning groove to achieve the separation and limit fixation of the magnets on the magnetic ring; the retaining frame can be used to give the upper and lower end faces of the magnetic ring radial limiting capabilities to the magnets as needed.

[0011] The limiting guide frame is an annular structure. The inner ring of the annular structure can be connected to the outer circumference of the magnetic ring. A magnet guide groove is provided on its circumference. The magnet guide groove can be coaxially connected with the U-shaped positioning groove to form a continuous guide channel. Because it is a detachable component, the corresponding type of limiting guide frame can be selected for auxiliary installation according to the different heights of magnets.

[0012] The magnet push-pull assembly includes a magnetic isolation pad, a screw mechanism, and a push-pull rod; the magnetic isolation pad is detachably mounted on a limit guide frame, the front end of the push-pull rod is provided with a hook portion for pushing and pulling the magnet, and the rear end of the push-pull rod is connected to the magnetic isolation pad via a screw mechanism. When the screw mechanism is operated, the hook portion extends and retracts axially along the continuous guide channel;

[0013] The retaining frame, the limiting guide frame, the magnetic isolation pad and the push-pull rod are all made of non-magnetic materials.

[0014] Preferred technical solution: The limiting guide frame and the outer periphery of the magnetic ring are positioned and connected by threaded fasteners.

[0015] A preferred technical solution: a side wall of the magnet guide groove is provided with a lateral notch, and the push-pull rod enters and exits the magnet guide groove through the lateral notch.

[0016] Optimal technical solution: The screw mechanism includes a screw and a handwheel, the screw is threadedly connected to the push-pull rod, the handwheel is fixed to one end of the screw, and the axis of the screw is parallel to the axis of the magnet guide groove.

[0017] Preferred technical solution: A magnet locking assembly is provided in the magnet guide groove to fix the position of the magnet during the pushing and pulling process.

[0018] The preferred technical solution: the limiting guide frame includes an upper annular part and a lower annular part, the magnet guide groove of the upper annular part is docked with the U-shaped positioning groove at the upper end of the magnetic ring, and the magnet guide groove of the lower annular part is docked with the U-shaped positioning groove at the lower end of the magnetic ring, which is used to realize the synchronous disassembly and assembly of the magnets at the upper and lower ends of the magnetic ring.

[0019] A method for installing magnets of a magnetic circuit assembly of a vibration test bench is provided, wherein the magnets are installed using the magnet disassembly and assembly tool of the magnetic circuit assembly of the vibration test bench, and the method comprises the following steps:

[0020] S1. Insert the guide post through the yoke and the end face of the magnetic ring to keep them coaxially positioned.

[0021] S2. The pitch screw is passed through the yoke and the end face of the magnetic ring in sequence, so that the front thread segment is threadedly connected to the magnetic ring to form a first thread pair; the rear thread segment is threadedly connected to the yoke to form a second thread pair, and the pitch screw is rotated inward, through the cooperation of the first thread pair and the second thread pair, driving the yoke and the magnetic ring to separate;

[0022] S3. Install the retainer on the end face of the magnetic ring where the magnet is to be mounted;

[0023] S4. The limit guide frame is fixed to the outer periphery of the magnetic ring so that the magnet guide groove and the U-shaped positioning groove 31 of the holder are coaxially connected to form a continuous guide channel;

[0024] S5. Place the magnet in the magnet guide groove, install the magnetic isolation pad on the limit guide frame, extend the hook portion of the push-pull rod into the magnet guide groove and place it on the outer side of the magnet, connect the push-pull rod and the magnetic isolation pad through the screw mechanism, and then rotate the screw mechanism to drive the push-pull rod to push the magnet along the continuous guide channel until it completely enters the U-shaped positioning groove;

[0025] S6. Rotate the pitch-adjusting screw outward to close the yoke and the magnetic ring, clamping the magnet in place.

[0026] Further: after step S6 is completed, the yoke and the magnetic ring are locked and fixed using fastening bolts.

[0027] A method for disassembling a magnet of a magnetic circuit assembly of a vibration test bench is provided, wherein the magnet disassembly and assembly tool of the magnetic circuit assembly of the vibration test bench is used to disassemble the magnet, and the method comprises the following steps:

[0028] Insert the guide column through the yoke and the end face of the magnetic ring to keep the two coaxially positioned;

[0029] The pitch-adjusting screw is passed through the yoke and the end face of the magnetic ring in sequence, so that the front thread section is threadedly connected with the magnetic ring to form a first thread pair; the rear thread section is threadedly connected with the yoke to form a second thread pair. The pitch-adjusting screw is rotated inward, and the yoke and the magnetic ring are separated through the cooperation of the first thread pair and the second thread pair.

[0030] Fix the limiting guide frame to the outer periphery of the magnetic ring so that the magnet guide groove and the U-shaped positioning groove of the retaining frame are coaxially connected to form a continuous guide channel;

[0031] Install the magnetic isolation pad on the limiting guide frame, the curved hook of the push-pull rod passes through the magnet guide groove and hooks the inner side of the magnet, and the push-pull rod and the magnetic isolation pad are connected by a screw mechanism; the rotating screw mechanism drives the push-pull rod to pull the magnet out of the U-shaped positioning groove and into the magnet guide groove.

[0032] Furthermore: when a magnet is adhered to the yoke, the magnetic isolation pad can be installed on the limiting guide frame, and the limiting guide frame can be fixed to the outer periphery of the yoke so that the magnet on the yoke corresponds to the magnet guide groove; the magnetic isolation pad is installed on the limiting guide frame, and the bent hook of the push-pull rod passes through the magnet guide groove to hook the inner side of the magnet, and the push-pull rod and the magnetic isolation pad are connected by a screw mechanism, and the rotating screw mechanism drives the push-pull rod to pull the magnet into the magnet guide groove.

[0033] The present invention designs an opening and closing unit to give the yoke and the magnetic ring the ability to adjust the distance between them, and uses at least two guide columns to axially penetrate the yoke and the magnetic ring to keep the two in coaxial positioning; at the same time, in conjunction with the pitch difference of the pitch-adjusting screw, the pitch adjustment of the yoke and the magnetic ring is achieved by rotating the pitch-adjusting screw, providing sufficient operating space for the disassembly and assembly of the magnet, and allowing the yoke and the magnetic ring to replace traditional glue or splints to clamp and fix the magnet, greatly reducing the difficulty of disassembly and assembly of the magnet, and using a simple structure to give the yoke and the magnetic ring in the magnetic circuit assembly of the vibration test bench the lifting and clamping function, without the need to use additional tooling components to achieve this function, and can meet the online replacement needs of magnets of different heights. A U-shaped positioning groove is coaxially connected to the magnet guide groove to form a continuous guide channel to ensure that the magnet moves in a straight line. At the same time, it is made of non-magnetic material, which can greatly reduce the positioning deviation between the poles due to magnetic interference and eliminate the risk of magnet splashing and collision. The magnet push-pull assembly adopts a curved hook design, which can push and pull the magnet in both directions to avoid safety hazards caused by direct manual contact with the magnet. By providing a magnet locking assembly in the magnet guide groove, the magnet can be optionally fixed in the magnet guide groove, which is convenient for pre-installation and centralized disassembly and assembly. The detachable retaining frame and the limiting guide frame cooperate to form a continuous guide channel. By replacing different retaining frames and limiting guide frames, different magnet installation requirements can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a schematic diagram of the magnet disassembly and assembly tooling structure of the magnetic circuit assembly of the vibration test bench of the present invention;

[0036] Figure 2 This is an exploded diagram of the magnet disassembly and assembly tooling of the magnetic circuit assembly of the vibration test bench of the present invention;

[0037] Figure 3 Schematic diagram of the structure of the retainer in the present invention;

[0038] Figure 4 Schematic diagram of the structure of the pitch-adjusting screw in the present invention;

[0039] Figure 5 It is a longitudinal cross-sectional schematic diagram of the magnet disassembly and assembly tool of the magnetic circuit assembly of the vibration test bench of the present invention.

[0040] In the above drawings, 100, magnetic ring; 200, yoke; 300, magnet; 1, pitch-adjusting screw; 1a, front thread section; 1b, rear thread section; 2, guide column; 3, retaining frame; 31, U-shaped positioning groove; 4, limiting guide frame; 41, magnet guide groove; 41a, lateral notch; 5, magnet push-pull assembly; 51, magnetic isolation pad; 52, screw mechanism; 52a, screw; 52b, handwheel; 53, push-pull rod; 53a, hook portion. DETAILED DESCRIPTION

[0041] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the numbers used in this way can be interchanged where appropriate to describe the embodiments of the present application here. In addition, the terms "including" and "having" and their synonyms are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0044] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0045] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," "sleeved," and "fitted" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or internal communication between two devices, elements, or components. For another example, "fitted" can mean complete or partial contact. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0046] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the present invention discloses a magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench, comprising:

[0048] The opening and closing unit includes a pitch-adjusting screw 1 and two guide posts 2. The guide posts 2 axially penetrate the yoke 200 and the magnetic ring 100 and are slidably connected thereto to achieve coaxial positioning of the yoke 200 and the magnetic ring 100. The pitch-adjusting screw 1 includes a front thread segment 1a and a rear thread segment 1b. The outer diameter of the front thread segment 1a is smaller than that of the rear thread segment 1b. When in use, the pitch-adjusting screw 1 passes through the side of the yoke 200 until it is connected to the magnetic ring 100. During this process, since the outer diameter of the front thread segment 1a is smaller than that of the rear thread segment 1b, the front thread segment 1a is a can smoothly pass through the threaded hole on the yoke 200 and be threadedly connected to the magnetic ring 100 to form a first thread pair, and the rear thread segment 1b is threadedly connected to the yoke 200 to form a second thread pair. When the pitch-adjusting screw 1 is screwed in, because the pitch of the front thread segment 1a is smaller than the pitch of the rear thread segment 1b, the speed at which the pitch-adjusting screw 1 passes through the magnetic ring 100 is slower than the speed at which the pitch-adjusting screw 1 passes through the yoke 200, thereby increasing the distance between the yoke 200 and the magnetic ring 100. Reverse rotation of the pitch-adjusting screw 1 reduces the distance between the yoke 200 and the magnetic ring 100. This increases the distance between the yoke 200 and the magnetic ring 100 during assembly and disassembly of the magnet, providing sufficient space for operation. At the same time, by closing the magnet instead of the traditional clamping tooling to clamp and fix it, the complexity of the assembly and disassembly tooling is reduced, and the clamping function can still be achieved when the height of the magnet changes.

[0049] The holder 3 is detachably fixed to the upper and lower end surfaces of the magnetic ring 100. The outer periphery of the holder 3 is provided with a U-shaped positioning groove 31 to separate and limit the magnet 300 on the magnetic ring 100;

[0050] The limiting guide frame 4 is an annular structure. The inner ring of the annular structure is positioned and connected to the outer periphery of the magnetic ring 100 by threaded fasteners. The magnet guide groove 41 is provided on the circumference. The magnet guide groove 41 is coaxially connected with the U-shaped positioning groove 31 to form a continuous guide channel.

[0051] The magnet push-pull assembly 5 includes a magnetic isolation pad 51, a screw mechanism 52, and a push-pull rod 53. The magnetic isolation pad 51 is detachably mounted on the limiting guide frame 4. The front end of the push-pull rod 53 is provided with a hook portion 53a for pushing and pulling the magnet 300. The rear end of the push-pull rod 53 is connected to the magnetic isolation pad 51 via the screw mechanism 52. When the screw mechanism 52 is operated, the hook portion 53a is axially extended and retracted along the continuous guide channel.

[0052] The retaining frame 3 , the limiting guide frame 4 , the magnetic isolation pad 51 and the push-pull rod 53 are all made of non-magnetic materials.

[0053] The opening and closing unit uses a pitch-adjusting screw and guide post to achieve coaxial positioning and adjustable spacing between the yoke and the magnetic ring, enabling it to lift and clamp and secure magnets of varying heights. A removable retaining frame and a position-limiting guide frame work together to form a continuous guide channel, separating and limiting the magnets. By replacing different retaining frames and position-limiting guide frames, different magnet installation requirements can be met. The magnet push-pull assembly uses a screw mechanism to drive the push-pull rod to extend and retract, enabling the push-pull operation of the magnets. All components are made of non-magnetic materials. The technical advantages are: spacing adjustment provides ample operating space, simplifies the traditional clamping structure, and adapts to different magnet heights. The guide channel and push-pull design improve assembly and disassembly efficiency and precision, while avoiding magnetic field interference and reducing tooling complexity.

[0054] In one embodiment, Figure 2 As shown, the sidewalls of the magnet guide slot 41 are provided with lateral notches 41a, through which the push-pull rod 53 enters and exits the magnet guide slot 41, allowing the push-pull rod 53 to be removed and placed without disassembling the limiting guide frame 4. This design facilitates quick assembly and disassembly of the push-pull rod 53, adapting to frequent assembly and disassembly scenarios. At the same time, the lateral design reduces the space required for axial operation.

[0055] In one embodiment, Figure 2 As shown, the screw mechanism 52 includes a screw 52a and a handwheel 52b. The screw 52a is threadedly connected to the push-pull rod 53. The handwheel 52b is fixed to one end of the screw 52a. The axis of the screw 52a is parallel to the axis of the magnet guide groove 41. Rotating the handwheel 52b drives the screw 52a, and the push-pull rod 53 moves along the axis parallel to the magnet guide groove 41. The handwheel provides high-precision displacement control and labor-saving operation, making it suitable for precision magnetic circuit assembly.

[0056] In one embodiment, Figure 2 As shown, a magnet locking assembly is installed within the magnet guide slot 41. The output end of the magnet locking assembly is made of polyurethane cushioning material and is used to secure the position of the magnet 300 during the push-pull process, facilitating centralized installation or transportation. This allows removed magnets 300 to be locked within the magnet guide slot 41 to prevent them from scattering. The tooling supports the pre-installation of multiple magnets, improving production line efficiency.

[0057] In one embodiment, Figure 2As shown, the limiting guide frame 4 includes an upper annular portion and a lower annular portion. The magnet guide groove 41 of the upper annular portion is connected to the U-shaped positioning groove 31 at the upper end of the magnetic ring 100, and the magnet guide groove 41 of the lower annular portion is connected to the U-shaped positioning groove 31 at the lower end of the magnetic ring 100, thereby realizing double-end guidance. The double-end guide channel realizes the simultaneous disassembly and assembly of the magnet 300, and completes the disassembly and assembly of the upper and lower magnets 300 at one time, thereby improving the disassembly and assembly efficiency. It should be noted that in other embodiments, the limiting guide frame 4 can be a single-layer structure, that is, only having an upper annular portion or a lower annular portion. When docking with the magnetic ring 100, the magnet guide groove 41 is first connected in a forward direction to disassemble and assemble the magnet 300 at the upper end of the guide ring 100, and then the limiting guide frame 4 is flipped 180 degrees so that the magnet guide groove 41 can be used to disassemble and assemble the magnet 300 at the lower end of the magnetic ring 100.

[0058] A method for installing magnets of a magnetic circuit assembly of a vibration test bench is provided, wherein the magnets are installed using the magnet disassembly and assembly tool of the magnetic circuit assembly of the vibration test bench, and the method comprises the following steps:

[0059] S1. The two guide posts 2 are passed downward from the upper end of the yoke 200 above the magnetic ring 100 through the yoke 200 and the end surface of the magnetic ring 100 so that the two maintain coaxial positioning;

[0060] S2. The pitch-adjusting screw 1 is sequentially passed through the end surface of the yoke 200 and the magnetic ring 100, so that the front thread segment 1a is threadedly connected to the magnetic ring 100 to form a first thread pair; the rear thread segment 1b is threadedly connected to the yoke 200 to form a second thread pair. The pitch-adjusting screw 1 is rotated inward, and the yoke 200 is separated from the magnetic ring 100 through the cooperation of the first and second thread pairs.

[0061] S3. The retainer 3 is installed on the end surface of the magnetic ring 100 where the magnet 300 needs to be installed;

[0062] S4. The limit guide frame 4 is fixed to the outer periphery of the magnetic ring 100, so that the magnet guide groove 41 and the U-shaped positioning groove 31 of the holder 3 are coaxially connected to form a continuous guide channel;

[0063] S5. Place the magnet 300 in the magnet guide groove 41 and install the magnetic isolation block 51 on the limiting guide frame 4. The hook portion 53a of the push-pull rod 53 extends into the magnet guide groove 41 and is placed on the outer side of the magnet 300. The push-pull rod 53 and the magnetic isolation block 51 are connected by the screw mechanism 52. The screw mechanism 52 is then rotated to drive the push-pull rod 53 to push the magnet 300 along the continuous guide channel until it completely enters the U-shaped positioning groove 31.

[0064] S6. Rotate the pitch screw 1 outward so that the yoke 200 and the magnetic ring 100 are closed, and the magnet 300 is clamped and fixed;

[0065] During this process, the magnet guide groove 41 and the U-shaped positioning groove 31 limit the two sides of the magnet 300. At the same time, since both are non-magnetic materials, the mutual interference between the magnetic poles in adjacent continuous guide channels can be reduced, thereby preventing the magnet 300 from flying out. At the same time, the operation of the magnet 300 is carried out through the magnet push-pull assembly 5, which greatly increases the distance between the operator and the installation position, avoiding danger; at the same time, the bottom of the U-shaped positioning groove 31 can position the magnet 300 in the radial position of the magnetic circuit structure.

[0066] In one embodiment, after step S6 is completed, the yoke 200 and the magnetic ring 100 are locked and fixed using fastening bolts to further increase the clamping stability of the yoke 200 and the magnetic ring 100 on the magnet.

[0067] A method for disassembling a magnet of a magnetic circuit assembly of a vibration test bench is provided, wherein the magnet is installed using the magnet disassembly and assembly tool of the magnetic circuit assembly of the vibration test bench, and the method comprises the following steps:

[0068] The guide column 2 is passed through the end surface of the yoke 200 and the magnetic ring 100 to keep the two coaxially positioned;

[0069] The pitch-adjusting screw 1 is passed through the yoke 200 and the end face of the magnetic ring 100 in sequence, so that the front thread section 1a is threadedly connected with the magnetic ring 100 to form a first thread pair; the rear thread section 1b is threadedly connected with the yoke 200 to form a second thread pair, and the pitch-adjusting screw 1 is rotated inward, and the yoke 200 is driven to separate from the magnetic ring 100 through the cooperation of the first thread pair and the second thread pair; here, the difference in the pitch of the pitch-adjusting screw 1 is used to achieve the difference in the movement speed of the yoke 200 and the magnetic ring 100, and the difference in the lifting speed of the yoke 200 and the magnetic ring 100 is used to change the distance between the two.

[0070] Fix the limiting guide frame 4 to the outer periphery of the magnetic ring 100 so that the magnet guide groove 41 and the U-shaped positioning groove 31 of the retaining frame 3 are coaxially connected to form a continuous guide channel;

[0071] The magnetic isolation pad 51 is installed on the limiting guide frame 4, the bent hook portion 53a of the push-pull rod 53 extends into the magnet guide groove 41 and is placed on the inner side of the magnet 300, and the push-pull rod 53 and the magnetic isolation pad 51 are connected by a screw mechanism 52; the rotating screw mechanism 52 drives the push-pull rod 53 to pull the magnet 300 out of the U-shaped positioning groove 31 into the magnet guide groove 41.

[0072] In one embodiment, when a magnet 300 is adhered to the yoke 200, the limiting guide frame 4 can be fixed to the outer periphery of the yoke 200 so that the magnet 300 on the yoke 200 corresponds to the magnet guide groove 41; the magnetic isolation pad 51 is installed on the limiting guide frame 4, and the hook portion 53a of the push-pull rod 53 passes through the magnet guide groove 41 to hook the inner side of the magnet 300. The push-pull rod 53 and the magnetic isolation pad 51 are connected by a screw mechanism 52. The screw mechanism 52 is rotated to drive the push-pull rod 53 to pull the magnet 300 into the magnet guide groove 41. This solves the problem of difficult removal caused by magnet adhesion.

[0073] It should be noted that in some cases the magnet disassembly method and the magnet installation method can be used in combination. For example, after the magnet 300 is removed, the magnet 300 can be directly installed through steps S5 and S6 in the magnet installation method. This operation is mainly used for online replacement of damaged magnets in the magnetic circuit assembly of the vibration test bench or switching of magnet models, which greatly increases the efficiency of magnet replacement.

[0074] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench, characterized in that: include: The opening and closing unit includes a pitch-adjusting screw and at least two guide posts. The guide posts can axially penetrate the yoke and the magnetic ring and be slidably connected thereto to achieve coaxial positioning of the yoke and the magnetic ring. The pitch-adjusting screw includes a front thread segment and a rear thread segment. The pitch and outer diameter of the front thread segment are smaller than the pitch and outer diameter of the rear thread segment. The front thread segment can be threadedly connected to the magnetic ring to form a first thread pair. The rear thread segment can be threadedly connected to the yoke to form a second thread pair. The retainer is detachably fixed to the upper and lower end faces of the magnetic ring. The outer periphery of the retainer is provided with a U-shaped positioning groove to achieve the separation and limit fixation of the magnets on the magnetic ring; The limiting guide frame is an annular structure. The inner ring of the annular structure can be connected to the outer periphery of the magnetic ring. The circumference of the annular structure is provided with a magnet guide groove. The magnet guide groove can be coaxially connected with the U-shaped positioning groove to form a continuous guide channel. The magnet push-pull assembly includes a magnetic isolation pad, a screw mechanism, and a push-pull rod; the magnetic isolation pad is detachably mounted on a limit guide frame, the front end of the push-pull rod is provided with a hook portion for pushing and pulling the magnet, and the rear end of the push-pull rod is connected to the magnetic isolation pad via a screw mechanism. When the screw mechanism is operated, the hook portion extends and retracts axially along the continuous guide channel; The retaining frame, the limiting guide frame, the magnetic isolation pad and the push-pull rod are all made of non-magnetic materials.

2. A magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench according to claim 1, characterized in that: The limiting guide frame is positioned and connected to the outer periphery of the magnetic ring through threaded fasteners.

3. A magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench according to claim 1, characterized in that: The side wall of the magnet guide groove is provided with a lateral notch, and the push-pull rod enters and exits the magnet guide groove through the lateral notch.

4. A magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench according to claim 1, characterized in that: The screw mechanism includes a screw and a handwheel. The screw is threadedly connected to the push-pull rod. The handwheel is fixed to one end of the screw. The axis of the screw is parallel to the axis of the magnet guide groove.

5. A magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench according to claim 1, characterized in that: A magnet locking assembly is provided in the magnet guide groove for fixing the position of the magnet during the pushing and pulling process.

6. A magnet disassembly and assembly tool for a magnetic circuit assembly of a vibration test bench according to claim 1, characterized in that: The limiting guide frame includes an upper annular part and a lower annular part. The magnet guide groove of the upper annular part is connected to the U-shaped positioning groove at the upper end of the magnetic ring, and the magnet guide groove of the lower annular part is connected to the U-shaped positioning groove at the lower end of the magnetic ring.

7. A method for installing magnets of a magnetic circuit assembly of a vibration test bench, using the magnet disassembly and assembly tool of the magnetic circuit assembly of a vibration test bench according to any one of claims 1 to 6, characterized in that The following steps are involved: S1. Insert the guide post through the yoke and the end face of the magnetic ring to keep them coaxially positioned. S2. The pitch screw is passed through the yoke and the end face of the magnetic ring in sequence, so that the front thread segment is threadedly connected to the magnetic ring to form a first thread pair; the rear thread segment is threadedly connected to the yoke to form a second thread pair, and the pitch screw is rotated inward, through the cooperation of the first thread pair and the second thread pair, driving the yoke and the magnetic ring to separate; S3. Install the retainer on the end face of the magnetic ring where the magnet is to be mounted; S4. The limit guide frame is fixed to the outer periphery of the magnetic ring so that the magnet guide groove and the U-shaped positioning groove of the retaining frame are coaxially connected to form a continuous guide channel; S5. Place the magnet in the magnet guide groove, install the magnetic isolation pad on the limit guide frame, extend the hook portion of the push-pull rod into the magnet guide groove and place it on the outer side of the magnet, connect the push-pull rod and the magnetic isolation pad through the screw mechanism, and then rotate the screw mechanism to drive the push-pull rod to push the magnet along the continuous guide channel until it completely enters the U-shaped positioning groove; S6. Rotate the pitch-adjusting screw outward to close the yoke and the magnetic ring, clamping the magnet in place.

8. A method for installing magnets in a magnetic circuit assembly of a vibration test bench according to claim 7, characterized in that: After step S6 is completed, the yoke and the magnetic ring are locked and fixed using fastening bolts.

9. A method for disassembling magnets of a magnetic circuit assembly of a vibration test bench, using the magnet disassembly and assembly tool of the magnetic circuit assembly of a vibration test bench according to any one of claims 1 to 6, characterized in that The following steps are involved: Insert the guide column through the yoke and the end face of the magnetic ring to keep the two coaxially positioned; The pitch-adjusting screw is passed through the yoke and the end face of the magnetic ring in sequence, so that the front thread section is threadedly connected with the magnetic ring to form a first thread pair; the rear thread section is threadedly connected with the yoke to form a second thread pair. The pitch-adjusting screw is rotated inward, and the yoke and the magnetic ring are separated through the cooperation of the first thread pair and the second thread pair. Fix the limiting guide frame to the outer periphery of the magnetic ring so that the magnet guide groove and the U-shaped positioning groove of the retaining frame are coaxially connected to form a continuous guide channel; Install the magnetic isolation pad on the limiting guide frame, the curved hook of the push-pull rod passes through the magnet guide groove and hooks the inner side of the magnet, and the push-pull rod and the magnetic isolation pad are connected by a screw mechanism; the rotating screw mechanism drives the push-pull rod to pull the magnet out of the U-shaped positioning groove and into the magnet guide groove.

10. A method for disassembling magnets of a magnetic circuit assembly of a vibration test bench according to claim 9, characterized in that: When a magnet is adhered to the yoke, the magnetic isolation pad can be installed on the limiting guide frame, and the limiting guide frame can be fixed to the outer periphery of the yoke so that the magnet on the yoke corresponds to the magnet guide groove; the magnetic isolation pad is installed on the limiting guide frame, and the hook part of the push-pull rod passes through the magnet guide groove to hook the inner side of the magnet, and the push-pull rod and the magnetic isolation pad are connected by a screw mechanism, and the rotating screw mechanism drives the push-pull rod to pull the magnet into the magnet guide groove.

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