Installation tool and assembly method of Halbach ring array magnetic steel

Abstract

The invention discloses an installation tool and an assembly method of Halbach ring array magnetic steel, the installation tool comprises a cabin body, a cavity is defined in the cabin body, one side of the cavity in a first direction is opened to form an opening, and the cavity is suitable for accommodating a plurality of magnetic steel arranged in sequence in a second direction; the baffle is arranged on the open side of the cabin body and used for opening and closing the opening; the pushing part is arranged in the cavity and can move between a first position and a second position in the first direction, and the pushing part is configured to be suitable for pushing the magnetic steel located in the cavity to abut against the baffle when the pushing part is located at the first position and pushing the magnetic steel to move out of the cavity when the pushing part moves from the first position to the second position. According to the mounting tool, the efficiency of mounting and fixing the magnetic steel in the cavity can be effectively improved, so that the mounting effect of the magnetic steel in the mounting cavity is ensured, the assembly difficulty of the Halbach annular array magnetic steel can be effectively reduced, and the assembly efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of magnet assembly, and in particular to an assembly method of a mounting tool and a Halbach annular array magnetic steel. Background Art

[0002] As a device for electromechanical energy conversion or electrical signal conversion, the motor has experienced more than 200 years of development, and its design means and methods have become quite mature. With the current research and development of new energy vehicles and new energy aircraft, the high power density motors that match them have become the focus of research and development, and the permanent magnet motors with Halbach array structure are becoming more and more popular.

[0003] In the prior art, since the magnets of the Halbach array are tightly arranged to form a closed magnetic ring, each magnet has repulsion, the magnet installation steps are complicated, the assembly efficiency is low, the technical requirements for the assemblers are high, and the installation process is prone to high losses. Currently, there is no good installation tooling and installation method to improve the installation efficiency. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention is to provide an installation tool, which can effectively ensure the installation effect of the magnetic steel in the installation cavity and can effectively improve the assembly efficiency of the Halbach ring array magnetic steel.

[0005] The invention also provides a method for assembling the Halbach annular array magnetic steel.

[0006] According to the first aspect of the present invention, the installation tool is used to install Halbach annular array magnets, including: a cabin, a cavity is defined in the cabin, the cavity is open on one side in a first direction to form an open mouth, the cavity is suitable for accommodating a plurality of magnets arranged in sequence in a second direction, the first direction is the axial direction of the annular array magnets, and the second direction is the circumferential direction of the annular array magnets; a baffle, the baffle is arranged on the open side of the cabin, and is used to open and close the open mouth; a pusher, the pusher is arranged in the cavity and is movable between a first position and a second position along the first direction, the pusher is configured to: be suitable for pushing the magnet located in the cavity to abut against the baffle when in the first position, and push the magnet out of the cavity when moving from the first position to the second position.

[0007] According to the installation tool of the present invention, a cabin, a baffle and a pushing member are arranged in the installation tool, a cavity is defined in the cabin, one side of the cavity in a first direction is open to form an open mouth, the cavity is suitable for accommodating a plurality of magnets arranged in sequence in a second direction, the baffle is arranged on the open side of the cabin, and is used to open and close the open mouth, the pushing member is arranged in the cavity, and is movable between a first position and a second position along the first direction, the pushing member is configured to: in the first position, be suitable for pushing the magnet located in the cavity to abut against the baffle, and push the magnet out of the cavity when moving from the first position to the second position, which can effectively improve the efficiency of installing and fixing the magnet in the cavity, thereby ensuring the installation effect of the magnet in the installation cavity, and can effectively reduce the difficulty of assembling the Halbach ring array magnet, thereby effectively improving the assembly efficiency.

[0008] In some embodiments, there are multiple pushing members, and the multiple pushing members are arranged in sequence along the second direction, and the multiple pushing members correspond one-to-one to the multiple magnetic steels.

[0009] In some embodiments, the installation tool further includes: an elastic member, the elastic member is disposed in the cavity and connected between the pushing member and the cabin body, and the elastic member is used to always push the pushing member to move to the second position.

[0010] In some embodiments, the cabin body has a top wall arranged opposite to the open opening in the first direction, and a guide hole is formed on the top wall and passes through the top wall along the first direction. The installation tool also includes: a guide rod, one end of which is fixed to the pushing member and the other end of which passes through the guide hole and extends to the outside of the cabin body.

[0011] In some embodiments, the elastic member is a spring, which is sleeved on the guide rod. The other end of the guide rod away from the pushing member is provided with a through hole, and the through hole penetrates the guide rod along the radial direction of the guide rod. The installation tool also includes: a limit member, which is arranged in the through hole and both ends extend out of the through hole. In the radial direction of the guide rod, the length of the limit member is greater than the inner diameter of the spring.

[0012] In some embodiments, the installation tool further includes: a pressing sleeve, which is mounted on the outside of the cabin body and is movable relative to the cabin body along the first direction, and the pressing sleeve is suitable for pushing the pushing member to move along the first direction through the guide rod.

[0013] In some embodiments, a slider is formed on one of the cabin body and the pressure sleeve and a slide groove is formed on the other, the slide groove extends along a first direction, and the slider is slidably engaged in the slide groove along the first direction.

[0014] In some embodiments, the slide groove is formed on the cabin body, and an installation groove is also formed on the cabin body. The installation groove and the slide groove are arranged at intervals in the second direction. One end of the installation groove passes through an end surface of the cabin body in the first direction, and the other end of the installation groove is connected to the slide groove through a connecting groove. The slider is configured to slide into the slide groove through the installation groove.

[0015] In some embodiments, the cavity has a first side wall and a second side wall arranged opposite to each other in the second direction, and the first side wall and the second side wall are respectively suitable for contacting two of the multiple magnetic steels located at both ends of the second direction to limit the displacement of the multiple magnetic steels in the second direction.

[0016] In some embodiments, grooves are formed on two side walls of the open opening that are opposite to each other in the third direction, and the grooves extend along the second direction. The two side edges of the baffle in the third direction are slidably fitted in the two grooves respectively.

[0017] In some embodiments, a cross section of the pushing member perpendicular to the first direction is configured to be consistent with a cross section of the magnetic steel.

[0018] In some embodiments, the pushing member is made of Teflon material, and the cabin is made of Teflon material.

[0019] According to the second aspect of the present invention, the assembly method of the Halbach annular array magnet uses the installation tool according to the first aspect of the present invention to assemble the Halbach annular array magnet, and the assembly method includes: S1, arranging the magnetic steel ring and the auxiliary ring along the radial inner and outer sides of the magnetic steel ring to define an installation space for installing the magnetic steel between the magnetic steel ring and the auxiliary ring; S2, sequentially loading the plurality of magnetic steels into the cavity along the first direction, and bonding the plurality of magnetic steels in the cavity to form a magnetic steel group; S3, supporting the cabin on one side of the axial direction of the magnetic steel ring and the auxiliary ring; S4, driving the pusher to push the magnetic steel group into the installation space; S5, repeating steps S2-S4 until the assembly of the Halbach annular array magnet is completed.

[0020] According to the assembly method of the Halbach annular array magnet according to the second aspect of the present invention, by using the installation tool according to the first aspect of the present invention to sequentially assemble multiple magnet groups in the installation space between the magnet ring and the auxiliary ring, the efficiency of installing and fixing the magnet in the cavity can be effectively improved, thereby ensuring the installation effect of the magnet in the installation cavity, and the assembly difficulty of the Halbach annular array magnet can be effectively reduced, thereby effectively improving the assembly efficiency. In addition, the assembly method in the present application is applicable to the installation of magnets of both inner and outer rotors, thereby effectively improving the compatibility of the assembly.

[0021] In some embodiments, in step S2, before the plurality of magnetic steels are bonded and fixed to form the magnetic steel group, it also includes: detecting and confirming that the magnetic circuit between the plurality of magnetic steels is correct.

[0022] In some embodiments, the installation space includes multiple first installation areas and multiple second installation areas, and the multiple first installation areas and the multiple second installation areas are alternately arranged along the circumference of the magnetic steel ring. In step S5, when repeating steps S2-S4, the assembly method also includes: first installing the magnetic steel groups in the multiple first installation areas, and then installing the magnetic steel groups in the multiple second installation areas.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of an angle of a mounting tool according to an embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of an angle of a cabin according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of a cabin according to another angle of an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 A partial enlarged view of the cabin in FIG.

[0028] Figure 5 is a schematic diagram of a cabin according to another angle of an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of a compression sleeve according to an embodiment of the present invention;

[0030] Figure 7 2 is a schematic diagram of another angle of the installation tool according to an embodiment of the present invention;

[0031] Figure 8 is a flow chart of an assembly method according to an embodiment of the present invention;

[0032] Fig. 9 is a schematic diagram of a magnetic steel group according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] 100. Install tooling;

[0035] 10. Cabin; 101. Cavity; 1011. First side wall; 1012. Second side wall; 1013. Third side wall; 102. Guide hole; 103. Slide groove; 104. Mounting groove; 105. Communication groove; 106. Groove; 11. Top wall;

[0036] 20. Baffle;

[0037] 30, pushing member; 30a, first pushing member; 30b, second pushing member;

[0038] 40. Elastic parts;

[0039] 50. Guide rod;

[0040] 60. Limiting parts;

[0041] 70. Pressing sleeve; 71. Sliding block;

[0042] 200, magnetic steel group; 201, magnetic steel; 201a, first magnetic steel;

[0043] 300, magnetic steel ring;

[0044] 400, auxiliary ring;

[0045] 500, motor shaft;

[0046] 600, motor end cover;

[0047] 700, rings;

[0048] 800, stopper; 801, second fixing hole. DETAILED DESCRIPTION

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0050] Reference below Figure 1-Figure 7 The installation tool 100 according to the first embodiment of the present invention is described. The installation tool 100 of this embodiment is used to install the Halbach annular array magnet 201.

[0051] like Figure 1-Figure 7 As shown, the installation tool 100 according to the first embodiment of the present invention includes: a cabin body 10, a baffle 20 and a pushing member 30.

[0052] A cavity 101 is defined in the cabin body 10, and one side of the cavity 101 is open in a first direction to form an open mouth. The cavity 101 is suitable for accommodating a plurality of magnets 201 arranged in sequence in a second direction. The first direction is the axial direction of the annular array magnets 201, and the second direction is the circumferential direction of the annular array magnets 201. The baffle 20 is arranged on the open side of the cabin body 10 for opening and closing the open mouth. The push member 30 is arranged in the cavity 101 and is movable between a first position and a second position along the first direction. The push member 30 is configured as follows: in the first position, it is suitable for pushing the magnet 201 located in the cavity 101 to abut against the baffle 20, and pushing the magnet 201 out of the cavity 101 when moving from the first position to the second position.

[0053] It should be noted that, in a specific example, the first direction is the up-down direction, the second direction is the circumferential direction of the annular array magnetic steel 201, and the first direction is perpendicular to the plane where the second direction is located. Figure 2 As shown, the cavity 101 of the capsule 10 is open at the bottom to form an opening so that the magnet 201 can be put in or taken out. It should be noted that the cross-sectional shape of a single magnet 201 is a fan ring, and multiple magnets 201 can form a ring array magnet 201. The cavity 101 of the capsule 10 can accommodate multiple magnets 201 arranged in the circumference of the ring array magnet 201. In a specific example, for example Figure 1 As shown, the cavity 101 of the cabin 10 can accommodate eight magnets 201 arranged in the circumferential direction of the annular array magnet 201.

[0054] For example Figure 1 As shown, the baffle 20 is disposed at the lower side of the cabin 10. When the magnet 201 needs to be installed in the cavity 101 or the position of the magnet 201 in the cavity 101 needs to be adjusted, the baffle 20 can open the opening. When the magnet 201 installed in the cavity 101 needs to be fixed, the baffle 20 can close the opening, so as to facilitate the operation. Further, the baffle 20 can be made of steel.

[0055] For example Figure 1 As shown, the pusher 30 can move between the first position and the second position in the up-down direction. When the pusher 30 is in the first position, the lower end surface of the pusher 30 abuts against the upper end surface of the magnet 201, and the lower end surface of the magnet 201 abuts against the upper side surface of the baffle 20. At this time, the magnet 201 is effectively fixed in the cavity 101. When the pusher 30 moves downward from the first position to the second position, the pusher 30 can push the magnet 201 to move downward and pass through the open mouth, and finally move the magnet 201 out of the cavity 101.

[0056] In this embodiment, when multiple magnets 201 are installed in the cavity 101 of the cabin body 10, the first magnet 201 is first installed in the cavity 101 through the open mouth at one end of the circumference of the annular array magnet 201, and is aligned and abutted with the lower end surface of the push member 30, and then the baffle 20 is moved to the lower end surface of the first magnet 201 and abutted with the first magnet 201, thereby completing the installation and fixation of the first magnet 201 in the cavity 101.

[0057] The second magnetic steel 201 is installed in the cavity 101 through the open mouth and is adjacent to the first magnetic steel 201 along the circumference of the annular array magnetic steel 201, and then the baffle 20 is moved to the lower end surface of the second magnetic steel 201 and abuts against the second magnetic steel 201, thereby completing the installation and fixation of the second magnetic steel 201 in the cavity 101. Afterwards, the remaining magnetic steels 201 are installed in sequence according to the above method until all the magnetic steels 201 are installed in the cavity 101. In this way, the magnetic steel 201 can be quickly installed in the cavity 101, thereby reducing the difficulty of installation. At the same time, the magnetic steel 201 can also be effectively fixed in the cavity 101, thereby ensuring the installation effect.

[0058] It should be noted that when multiple magnets 201 are installed in the cavity 101 of the cabin 10, magnetic steel glue needs to be applied on the bonding surface of the magnets 201 and the magnets 201. After the multiple magnets 201 are installed in the cavity 101 of the cabin 10 and the magnetic steel glue is cured, the multiple magnets 201 form a whole. When the magnets 201 are moved out of the cavity 101, the baffle 20 is first moved to separate the baffle 20 from the magnets 201, and then the pusher 30 is moved so that the pusher 30 can move downward from the first position to the second position. In this process, the pusher 30 can push the multiple magnets 201 as a whole downward through the open mouth and move out of the cavity 101. In this way, the stability of the magnets 201 moving out of the cavity 101 can be effectively ensured, the operation process is simplified and the difficulty of operation is reduced, so that the efficiency of the magnets 201 moving out of the cavity 101 can be effectively improved.

[0059] According to the installation tool 100 of the embodiment of the present invention, by arranging a cabin 10, a baffle 20 and a pusher 30 in the installation tool 100, a cavity 101 is defined in the cabin 10, and one side of the cavity 101 is open in the first direction to form an open mouth, and the cavity 101 is suitable for accommodating a plurality of magnets 201 arranged in sequence in the second direction, and the baffle 20 is arranged on the open side of the cabin 10 for opening and closing the open mouth, and the pusher 30 is arranged in the cavity 101 and is movable between a first position and a second position along the first direction, and the pusher 30 is configured as: in the first position, it is suitable for pushing the magnet 201 located in the cavity 101 to abut against the baffle 20, and when moving from the first position to the second position, it pushes the magnet 201 out of the cavity 101, which can effectively improve the efficiency of installing and fixing the magnet 201 in the cavity 101, thereby ensuring the installation effect of the magnet 201 in the installation cavity, and can effectively reduce the assembly difficulty of the Halbach ring array magnet 201, thereby effectively improving the assembly efficiency.

[0060] In one embodiment of the present invention, Figure 1 As shown, the number of the pushers 30 is multiple, and the multiple pushers 30 are arranged in sequence along the second direction, and the multiple pushers 30 correspond to the multiple magnetic steels 201 one by one. For example, the number of the pushers 30 can be two, three, four, five, or more than six. In a specific example, Figure 1 As shown, the number of the pushers 30 is eight, and the plurality of pushers 30 are arranged in the cavity 101 along the circumference of the annular array magnetic steel 201 , and the plurality of pushers 30 correspond to the plurality of magnetic steels 201 one by one.

[0061] When multiple magnets 201 are installed in the cavity 101 of the cabin 10, the multiple magnets 201 are installed in the cavity 101 in sequence as required, thereby accurately adjusting the installation position of each magnet 201. After multiple magnets 201 are installed in the cavity 101 of the cabin 10 and before the magnet glue is cured, if it is found that the installation position of the magnet 201 is incorrect, the baffle 20 is removed, the magnet 201 is taken out and the magnet 201 is reinstalled, thereby reducing the loss rate of the magnet 201.

[0062] In this embodiment, by setting the number of pushers 30 to be multiple, the multiple pushers 30 are arranged in sequence along the second direction, and the multiple pushers 30 correspond to the multiple magnetic steels 201 one by one, so that the magnetic steels 201 can be installed in the cavity 101 in the required order, and the installation position of the magnetic steel 201 can be accurately adjusted through the one-to-one corresponding pushers 30 and magnetic steels 201, thereby effectively ensuring the installation effect of the magnetic steel 201 in the cavity 101. In addition, the loss rate of the magnetic steel 201 can be effectively reduced, thereby effectively reducing the cost.

[0063] In one embodiment of the present invention, Figure 1As shown, the installation tool 100 also includes an elastic member 40, which is disposed in the cavity 101 and connected between the push member 30 and the cabin 10, and the elastic member 40 is used to always push the push member 30 to move to the second position. Figure 1 As shown, the upper end of the elastic member 40 abuts against the cabin 10, and the lower end of the elastic member 40 abuts against the upper end surface of the push member 30, and the elastic member 40 can always push the push member 30 to move to the second position. Further, the number of elastic members 40 can be multiple, and multiple elastic members 40 correspond to multiple push members 30 one by one.

[0064] When the magnet 201 is installed in the cavity 101, due to the elastic force of the elastic member 40, the magnet 201 can smoothly enter the cavity 101, thereby playing a buffering role, thereby avoiding damage caused by collision. When the magnet 201 is installed and fixed in the cavity 101, the magnet 201 can be pressed between the push member 30 and the baffle 20 under the action of the continuous elastic force of the elastic member 40, thereby effectively ensuring the fixing effect. When the magnet 201 is removed from the cavity 101, the elastic member 40 can push the push member 30 to move downward so that the magnet 201 is removed from the cavity 101.

[0065] In this embodiment, an elastic member 40 is provided in the installation tool 100. The elastic member 40 is provided in the cavity 101 and connected between the pusher 30 and the cabin 10. The elastic member 40 is used to always push the pusher 30 to move to the second position, which can effectively protect the magnetic steel 201 and the pusher 30 when installing the magnetic steel 201, thereby improving safety. In addition, the automation level of the installation tool 100 can also be improved, and the installation and removal of the magnetic steel 201 can be facilitated, thereby improving the convenience of operation.

[0066] In one embodiment of the present invention, Figure 2 , Figure 3 and Figure 5 As shown, the cabin body 10 has a top wall 11 arranged opposite to the open mouth in a first direction, and a guide hole 102 is formed on the top wall 11 and passes through the top wall 11 along the first direction. The installation tool 100 also includes: a guide rod 50, one end of the guide rod 50 is fixed to the push member 30 and the other end passes through the guide hole 102 and extends to the outside of the cabin body 10.

[0067] For example Figure 2 and Figure 3 As shown, a top wall 11 is arranged on the upper side of the cabin body 10, and a guide hole 102 is provided on the top wall 11 which passes through in the up and down directions. Furthermore, the shape of the guide hole 102 can be circular, the cross-sectional shape of the guide rod 50 can be circular, the number of the guide rods 50 can be multiple, and the multiple guide rods 50 correspond one-to-one to the multiple guide holes 102, and the multiple guide rods 50 correspond one-to-one to the multiple pushing members 30.

[0068] In a specific example, if Figure 2 and Figure 3 As shown, there are eight guide rods 50, and the lower ends of the guide rods 50 are fixedly connected to the upper end surface of the pusher 30. Furthermore, the upper end surface of the pusher 30 is provided with a mounting hole, and the lower ends of the guide rods 50 extend into the mounting hole to have an interference fit with the pusher 30. The guide rods 50 pass through the guide holes 102 and can move in the up-down direction, thereby effectively pushing the pusher 30 to move in the up-down direction.

[0069] In this embodiment, a guide hole 102 is provided on the top wall 11 of the cabin 10, which passes through the top wall 11 in the first direction, and a guide rod 50 is provided in the installation tool 100. One end of the guide rod 50 is fixed to the pusher 30 and the other end passes through the guide hole 102 and extends to the outside of the cabin 10. This can ensure that the pusher 30 maintains linear motion during the movement process and avoids deviation or tilt, thereby effectively improving the accuracy. In addition, the convenience of the operation of moving the pusher 30 can also be improved.

[0070] In one embodiment of the present invention, Figure 1 As shown, the elastic member 40 is a spring, which is sleeved on the guide rod 50. The other end of the guide rod 50 away from the pushing member 30 is provided with a through hole, and the through hole penetrates the guide rod 50 along the radial direction of the guide rod 50. The installation tool 100 also includes: a limit member 60, which is arranged in the through hole and both ends extend out of the through hole. In the radial direction of the guide rod 50, the length of the limit member 60 is greater than the inner diameter of the spring.

[0071] In a specific example, if Figure 1 As shown, the spring is sleeved on the guide rod 50, and the upper end of the spring abuts against the lower side surface of the top wall 11 of the cabin 10, and the lower end of the spring abuts against the upper end surface of the pusher 30. The upper end of the spring is provided with a through hole, and the limiter 60 is arranged in the through hole and the two ends of the limiter 60 extend out of the through hole. When the guide rod 50 moves downward, the limiter 60 can abut against the upper side surface of the top wall 11 of the cabin 10, so as to control the moving range of the guide rod 50, and prevent the guide rod 50 from being separated from the guide hole 102 due to excessive downward movement of the guide rod 50.

[0072] By configuring the elastic member 40 as a spring, this embodiment can effectively simplify the structure and reduce the cost. By sleeved the elastic member 40 on the guide rod 50, a through hole is provided at the other end of the guide rod 50 away from the pushing member 30. The through hole penetrates the guide rod 50 in the radial direction of the guide rod 50. The limit member 60 is provided in the through hole and both ends extend out of the through hole. In the radial direction of the guide rod 50, the length of the limit member 60 is greater than the inner diameter of the spring, so that the moving range of the guide rod 50 can be limitedly controlled, thereby effectively improving the reliability and stability of the installation tooling 100.

[0073] In one embodiment of the present invention, Figure 1 As shown, the installation tool 100 also includes: a pressing sleeve 70, which is sleeved on the outside of the cabin body 10 and is movable relative to the cabin body 10 along a first direction. The pressing sleeve 70 is suitable for pushing the pushing member 30 to move along the first direction through the guide rod 50.

[0074] For example Figure 1 As shown, the pressing sleeve 70 is arranged on the upper side of the cabin body 10 and sleeved on the outer side of the cabin body 10, and the pressing sleeve 70 can slide in the up and down direction relative to the cabin body 10. When the magnetic steel 201 is moved out of the cavity 101, the pressing sleeve 70 is pushed to slide downward, so that the pressing sleeve 70 can press the upper end of the guide rod 50, thereby enabling the guide rod 50 to move downward, and the downward movement of the guide rod 50 can push the pusher 30 to move downward, thereby effectively pushing the magnetic steel 201 downward to move out of the cavity 101.

[0075] In this embodiment, a pressing sleeve 70 is provided in the installation tool 100. The pressing sleeve 70 is sleeved on the outer side of the cabin body 10 and is movable relative to the cabin body 10 along a first direction. The pressing sleeve 70 is suitable for pushing the pushing member 30 to move along the first direction through the guide rod 50, which can facilitate the user's operation and can effectively control the speed and distance of the downward movement of the guide rod 50, thereby effectively improving the controllability, and further effectively ensuring that the magnet 201 can be moved out of the cavity 101 as required.

[0076] In one embodiment of the present invention, Figure 1 As shown, a slider 71 is formed on one of the cabin body 10 and the pressing sleeve 70 and a slide groove 103 is formed on the other. The slide groove 103 extends along a first direction, and the slider 71 is slidably fitted in the slide groove 103 along the first direction.

[0077] For example, a slide groove 103 is provided in the cabin 10, and a slider 71 is provided in the pressing sleeve 70; for another example, a slider 71 is provided in the cabin 10, and a slide groove 103 is provided in the pressing sleeve 70. The slide groove 103 is extended in the up-down direction, and the slider 71 can slide up and down in the slide groove 103, so that the pressing sleeve 70 can slide in the up-down direction relative to the cabin 10. Further, the number of the slide grooves 103 can be multiple, for example, the number of the slide grooves 103 can be two, three, four, five, and six or more, and the multiple slide grooves 103 correspond to the multiple sliders 71 one by one.

[0078] In this embodiment, a slider 71 is provided on one of the cabin 10 and the pressing sleeve 70, and a slide groove 103 is provided on the other, the slide groove 103 extends along the first direction, and the slider 71 is slidably fitted in the slide groove 103 along the first direction, which can effectively ensure that the pressing sleeve 70 slides along the first direction, avoids the displacement of the pressing sleeve 70 when sliding, thereby effectively improving the stability and reliability of the installation tool 100. In addition, the structure can be simplified, which is convenient for regular maintenance, thereby effectively improving the convenience of maintenance.

[0079] In one embodiment of the present invention, Figure 5 and Figure 6 As shown, the slide groove 103 is formed on the cabin body 10, and an installation groove 104 is also formed on the cabin body 10. The installation groove 104 and the slide groove 103 are arranged at intervals in the second direction. One end of the installation groove 104 passes through an end surface of the cabin body 10 in the first direction, and the other end of the installation groove 104 is connected to the slide groove 103 through the connecting groove 105. The slider 71 is configured to slide into the slide groove 103 through the installing groove 104.

[0080] For example Figure 5 As shown, the slide groove 103 is extended in the up-down direction, the installation groove 104 is extended in the up-down direction, the slide groove 103 and the installation groove 104 are arranged at intervals in the circumferential direction of the annular array magnetic steel 201, and the upper end of the installation groove 104 passes through the upper end surface of the cabin 10. A connecting groove 105 is provided between the installation groove 104 and the slide groove 103, and the connecting groove 105 can be extended in the circumferential direction of the annular array magnetic steel 201. The lower end of the installation groove 104 is connected to one end of the connecting groove 105, and the lower end of the slide groove 103 is connected to the other end of the connecting groove 105. In a specific example, as Figure 5 and Figure 6 As shown, the number of the mounting grooves 104 , the sliding grooves 103 and the connecting grooves 105 are all three, and the number of the sliding blocks 71 is also three.

[0081] When installing the pressing sleeve 70, align the slider 71 with the upper end of the installation groove 104, and then move the slider 71 downward in the installation groove 104 to the lower end of the installation groove 104, and then slide the slider 71 in the connecting groove 105 along the circumference of the annular array magnetic steel 201 to the lower end of the slide groove 103, and then slide the slider 71 upward in the slide groove 103, thereby completing the installation of the pressing sleeve 70.

[0082] In this embodiment, a slide groove 103 and an installation groove 104 are arranged on the cabin body 10, and the installation groove 104 and the slide groove 103 are arranged at intervals in the second direction. One end of the installation groove 104 passes through an end face of the cabin body 10 in the first direction, and the other end of the installation groove 104 is connected with the slide groove 103 through a connecting groove 105. The slider 71 is configured to slide into the slide groove 103 through the installation groove 104, which can effectively prevent the pressing sleeve 70 from falling off and effectively ensure the precise fit between the pressing sleeve 70 and the cabin body 10.

[0083] In one embodiment of the present invention, Figure 1 and Figure 2As shown, the cavity 101 has a first side wall 1011 and a second side wall 1012 arranged relatively to each other in the second direction, and the first side wall 1011 and the second side wall 1012 are respectively suitable for contacting two magnetic steels 201 located at both ends of the multiple magnetic steels 201 in the second direction, so as to limit the displacement of the multiple magnetic steels 201 in the second direction.

[0084] For example Figure 1 and Figure 2 As shown, the cavity 101 has a first side wall 1011 and a second side wall 1012 arranged oppositely in the circumferential direction of the annular array magnetic steel 201, the first side wall 1011 abuts against the magnetic steel 201 at one end of the annular array magnetic steel 201 in the circumferential direction, and the second side wall 1012 abuts against the magnetic steel 201 at the other end of the annular array magnetic steel 201 in the circumferential direction. Further, the cavity 101 has a third side wall 1013 and a fourth side wall arranged oppositely in the radial direction of the annular array magnetic steel 201, and the third side wall 1013 and the fourth side wall abut against the magnetic steel 201 in the cavity 101. Thus, the magnetic steel 201 in the cavity 101 can be effectively fixed to ensure that the magnetic steel 201 maintains the correct arrangement and spacing.

[0085] In this embodiment, the first side wall 1011 and the second side wall 1012 of the cavity 101 are respectively adapted to contact two magnets 201 located at both ends of the multiple magnets 201 in the second direction, so as to limit the displacement of the multiple magnets 201 in the second direction. This can effectively ensure the stability of the magnets 201 in the cavity 101, avoid shaking and deviation of the magnets 201, and thus keep the magnets 201 in the correct arrangement.

[0086] In one embodiment of the present invention, Figure 4 As shown, grooves 106 are formed on the two side walls of the opening opposite to each other in the third direction. The grooves 106 extend along the second direction. The two side edges of the baffle 20 in the third direction are slidably fitted in the two grooves 106 .

[0087] It should be noted that, in a specific example, the third direction is the radial direction of the annular array magnetic steel 201. Figure 4 As shown, grooves 106 are formed on the radially opposite side walls of the annular array magnetic steel 201 at the open opening, and the number of the grooves 106 is two. The two grooves 106 extend along the circumference of the annular array magnetic steel 201 and penetrate the radially opposite side walls of the open opening at the annular array magnetic steel 201. The radial side edges of the baffle 20 at the annular array magnetic steel 201 are slidably arranged in the two grooves 106. That is, the baffle 20 can move along the circumference of the annular array magnetic steel 201 to open or close the open opening.

[0088] In this embodiment, grooves 106 are provided on the two side walls opposite to each other in the third direction of the open opening, and the grooves 106 extend in the second direction. The two side edges of the baffle 20 in the third direction are respectively slidably fitted in the two grooves 106, so that the moving path of the baffle 20 can be clearly defined, ensuring that the baffle 20 can only slide in a predetermined direction, and preventing the baffle 20 from deviating when moving, thereby effectively improving stability. In addition, the operation process of moving the baffle 20 can be effectively simplified, which is convenient for users to operate.

[0089] In one embodiment of the present invention, Figure 1 As shown, the cross section of the pusher 30 perpendicular to the first direction is configured to be consistent with the cross section of the magnetic steel 201. In a specific example, as Figure 1 As shown, the cross-sectional dimension of the push member 30 perpendicular to the axial direction of the annular array magnet 201 is consistent with the cross-sectional dimension of the magnet 201. Further, the length of the push member 30 in the up-down direction is greater than the length of the magnet 201 in the up-down direction. For example, the length of the push member 30 in the up-down direction is 1 mm longer than that of the magnet 201.

[0090] For example Figure 1 As shown, when the first magnetic steel 201a is installed and fixed in the cavity 101, the first pushing member 30a corresponding to the first magnetic steel 201a abuts against the circumferential portion of the annular array magnetic steel 201 with the second pushing member 30b next to it, and the length of the abutting surface in the up and down directions is 1 mm. Thus, the circumferential movement of the first pushing member 30a in the annular array magnetic steel 201 can be limited, and the lower end face of the first pushing member 30a is aligned with the upper end face of the first magnetic steel 201a.

[0091] In this embodiment, by setting the cross section of the pusher 30 perpendicular to the first direction to be consistent with the cross section of the magnetic steel 201, the magnetic steel 201 can be evenly stressed, and deformation or damage of the magnetic steel 201 caused by uneven local stress on the magnetic steel 201 can be avoided, thereby effectively protecting the magnetic steel 201. In addition, when the pusher 30 pushes the magnetic steel 201, unnecessary deviation of the magnetic steel 201 can be prevented, thereby effectively improving stability.

[0092] In one embodiment of the present invention, Figure 1 As shown, the pusher 30 is made of Teflon material, and the cabin 10 is made of Teflon material. It should be noted that when multiple magnets 201 are installed in the cavity 101 of the cabin 10, magnetic steel glue needs to be applied between the magnets 201 and the magnets 201, and when the magnetic steel glue overflows, it can directly contact the cabin 10 and the pusher 30.

[0093] The cabin 10 and the pusher 30 are made of Teflon material, which has a strong non-stick property, thereby ensuring that the magnet 201 is clearly separated from the cabin 10 and the pusher 30, and further ensuring that the pusher 30 can smoothly push the magnet 201 out of the cavity 101. In addition, the Teflon material has good corrosion resistance and wear resistance, which can effectively improve the service life of the cabin 10 and the pusher 30. Further, when multiple magnets 201 are installed in the cavity 101 of the cabin 10, the magnetic steel glue between the magnets 201 and the magnets 201 will also contact the baffle 20 when it overflows. Therefore, the bonding surface between the baffle 20 and the magnet 201 can be coated with Teflon liquid to prevent adhesion.

[0094] In this embodiment, the push member 30 and the cabin body 10 are configured to be Teflon material, so that the push member 30 can push the magnet 201 to move smoothly out of the cavity 101, thereby further reducing the difficulty of operation. In addition, the service life of the push member 30 and the cabin body 10 can be effectively improved, and the maintenance cost can be reduced.

[0095] According to the assembly method of the Halbach annular array magnet 201 according to the second aspect of the present invention, the assembly method uses the installation tool 100 according to the first aspect of the present invention to install the Halbach annular array magnet 201. The assembly method includes: S1, arranging the magnetic steel ring 300 and the auxiliary ring 400 along the radial inner and outer sides of the magnetic steel ring 300 to define an installation space for installing the magnetic steel 201 between the magnetic steel ring 300 and the auxiliary ring 400.

[0096] For example, the magnetic steel ring 300 can be arranged on the outside of the auxiliary ring 400 along the radial direction of the magnetic steel ring 300, so that it can be suitable for the installation of the outer rotor; for another example, the magnetic steel ring 300 can be arranged on the inside of the auxiliary ring 400 along the radial direction of the magnetic steel ring 300, so that it can be suitable for the installation of the inner rotor. In a specific example, Figure 7 As shown, the magnetic steel ring 300 is arranged on the outside of the auxiliary ring 400 along the radial direction of the magnetic steel ring 300, and an installation space for installing the magnetic steel 201 is formed between the magnetic steel ring 300 and the auxiliary ring 400. Further, the cross-sectional shape of the magnetic steel ring 300 and the auxiliary ring 400 is annular, and the inner diameter of the auxiliary ring 400 is consistent with the inner diameter of the motor shaft 500. A motor end cover 600 is also provided in the motor, and the magnetic steel ring 300 and the auxiliary ring 400 are both abutted against the upper side of the motor end cover 600.

[0097] S2, sequentially loading a plurality of magnetic steels 201 into the cavity 101 along a first direction, and bonding the plurality of magnetic steels 201 in the cavity 101 together to form a magnetic steel group 200.

[0098] It should be noted that when multiple magnets 201 are installed in the cavity 101 of the cabin 10 in the up-down direction, magnetic steel glue needs to be applied on the bonding surface of the magnets 201 and the magnets 201. After the multiple magnets 201 are installed in the cavity 101 of the cabin 10 and the magnetic steel glue is cured, the multiple magnets 201 are arranged in sequence along the circumference of the annular array magnets 201 and the multiple magnets 201 are bonded and connected to form a magnet group 200. In a specific example, a magnet group 200 includes eight magnets 201.

[0099] S3, supporting the cabin body 10 on one side of the magnetic steel ring 300 and the auxiliary ring 400 in the axial direction.

[0100] For example Figure 7 As shown, the cabin body 10 is supported on the upper side of the magnetic steel ring 300 and the auxiliary ring 400, and the open mouth of the cabin body 10 is aligned with the installation space between the magnetic steel ring 300 and the auxiliary ring 400 in the up-down direction, so that the magnetic steel group 200 is aligned with the installation space between the magnetic steel ring 300 and the auxiliary ring 400 in the up-down direction.

[0101] S4, driving the pusher 30 to push the magnetic steel assembly 200 into the installation space.

[0102] For example Figure 7 As shown, after the open mouth of the cabin body 10 is aligned with the installation space between the magnetic steel ring 300 and the auxiliary ring 400 in the up and down directions, the baffle 20 is removed, the open mouth of the cabin body 10 is opened, and the magnetic steel group 200 is pushed downward into the installation space between the magnetic steel ring 300 and the auxiliary ring 400 by driving the pusher 30.

[0103] When the magnetic steel group 200 is located in the installation space, the outer circumference of the auxiliary ring 400 can be fitted with the inner circumference of the magnetic steel group 200, and the inner circumference of the magnetic steel ring 300 can be fitted with the outer circumference of the magnetic steel group 200. In a specific example, before driving the pusher 30, magnetic steel glue needs to be applied to the inner circumference of the magnetic steel ring 300, and after the magnetic steel glue is cured, the magnetic steel group 200 in the installation space can be bonded to the inner circumference of the magnetic steel ring 300.

[0104] S5, repeat steps S2-S4 until the Halbach ring array magnet 201 is assembled.

[0105] After the Halbach ring array magnet 201 is assembled, multiple magnets 201 are arranged in sequence along the circumference of the ring array magnet 201, and the magnets 201 are bonded to each other by magnet glue, and the magnets 201 are bonded to the magnet ring 300 by magnet glue. After the Halbach ring array magnet 201 is assembled, the auxiliary ring 400 needs to be removed.

[0106] It should be noted that in step S2, multiple installation tools 100 can be set, and the magnets 201 can be installed in advance in the cavities 101 of the multiple installation tools 100 according to the installation requirements. Afterwards, in step S3, the cabins 10 of the multiple installation tools 100 can be supported on one side of the axial direction of the magnet 201 ring and the auxiliary ring 400 at the same time, and in step S4, the pushers 30 of the multiple installation tools 100 can be driven at the same time to push the magnet 201 group 200 into the installation space. In this way, the assembly time can be effectively saved, thereby effectively improving the assembly efficiency.

[0107] In a specific example, the auxiliary ring 400 is provided with a first fixing hole, and the lifting ring 700 can be fixedly connected to the auxiliary ring 400 through the first fixing hole, so that the auxiliary ring 400 can be conveniently removed and installed through the lifting ring 700. Furthermore, the auxiliary ring 400 can be made of Teflon material, so that the auxiliary ring 400 and the magnetic steel 201 are not adhered, so that the auxiliary ring 400 can be conveniently removed.

[0108] According to the assembly method of the Halbach annular array magnet 201 of the second embodiment of the present invention, when assembling the magnet 201, the magnet ring 300 and the auxiliary ring 400 are first arranged radially inside and outside the magnet ring 300 to define an installation space for installing the magnet 201 between the magnet ring 300 and the auxiliary ring 400, and then multiple magnets 201 are sequentially installed into the cavity 101 along the first direction, and the multiple magnets 201 in the cavity 101 are bonded and connected to form a magnet group 200, and then The cabin 10 is supported on one side of the axial direction of the magnetic steel ring 300 and the auxiliary ring 400, and then the pusher 30 is driven to push the magnetic steel group 200 into the installation space, and finally the above steps are repeated until the Halbach annular array magnetic steel 201 is assembled. It can effectively improve the efficiency of installing and fixing the magnetic steel 201 in the cavity 101, thereby ensuring the installation effect of the magnetic steel 201 in the installation cavity, and can effectively reduce the assembly difficulty of the Halbach annular array magnetic steel 201, thereby effectively improving the assembly efficiency. In addition, the assembly method in this application is also applicable to the installation of the magnetic steel 201 of the inner and outer rotors, thereby effectively improving the compatibility of the assembly.

[0109] In one embodiment of the present invention, in step S2 , before the plurality of magnetic steels 201 are bonded and fixed to form the magnetic steel group 200 , the step further includes: detecting and confirming that the magnetic circuits between the plurality of magnetic steels 201 are correct.

[0110] In a specific example, a magnet group 200 includes eight magnets 201. It should be noted that due to the self-shielding effect of the Halbach magnets 201, a path can be formed between the eight magnets 201. After the multiple magnets 201 are installed in the cavity 101 of the cabin 10 and before the magnet glue between the magnets 201 is cured, a magnetic pole observation sheet can be used to observe whether the magnetic path between the magnets 201 is correct.

[0111] The magnetic circuit of the correctly installed magnet 201 will show regular and periodic changes. Through this magnetic circuit inspection step, it is possible to promptly detect whether the polarity of the magnet 201 is installed correctly, so as to correct it in time, avoiding problems after the magnet 201 is assembled into the installation space, thereby avoiding irreversible economic losses and production delays.

[0112] This embodiment detects and confirms that the magnetic circuit between the multiple magnets 201 is correct before the multiple magnets 201 are bonded and fixed to form the magnet group 200 in step S2. This can effectively check whether the magnetic circuit between the magnets 201 in the magnet group 200 is correct, so as to determine whether the installation result meets the requirements, thereby discovering problems in advance and avoiding unnecessary losses.

[0113] In one embodiment of the present invention, the installation space includes a plurality of first installation areas and a plurality of second installation areas, and the plurality of first installation areas and the plurality of second installation areas are alternately arranged along the circumference of the magnetic steel ring 300. In step S5, when repeating steps S2-S4, the assembly method further includes: first installing the magnetic steel groups 200 in the plurality of first installation areas, and then installing the magnetic steel groups 200 in the plurality of second installation areas.

[0114] Specifically, the plurality of first installation areas correspond to the plurality of magnetic steel groups 200 one by one, and the plurality of second installation areas correspond to the plurality of magnetic steel groups 200 one by one. When the magnetic steel group 200 is not installed in the first installation area or the second installation area, a stopper 800 is provided in the first installation area or the second installation area. Furthermore, a second fixing hole 801 is provided on the upper side of the stopper 800, and the lifting ring 700 can be fixedly connected to the stopper 800 through the second fixing hole 801, thereby conveniently removing and installing the stopper 800. In addition, the stopper 800 can be made of Teflon material, so that the stopper 800 and the magnetic steel 201 are not adhered to each other, so that the stopper 800 can be conveniently removed.

[0115] In a specific example, if Figure 7As shown, the number of the first installation area and the second installation area are both three, and the number of the blocks 800 is six. When assembling the magnetic steel group 200 in the installation space, first remove the block 800 in a first installation area, and then assemble a magnetic steel group 200 in this first installation area, and then complete the assembly of the magnetic steel groups 200 in the remaining two first installation areas in sequence according to the above operations. After the magnetic steel glue on the inner circumference of the magnetic steel ring 300 is cured, multiple magnetic steel groups 200 can be effectively assembled and fixed. Afterwards, assemble the magnetic steel groups 200 in the second installation area until all the magnetic steel groups 200 are assembled. After all the magnetic steel groups 200 are assembled, remove the auxiliary ring 400. Fig. 9 shown.

[0116] It should be noted that the size of the stopper 800 is completely consistent with the size of the magnetic steel group 200, and when the stopper 800 is installed in the installation space, the inner side surface of the magnetic steel ring 300 in the radial direction of the stopper 800 fits with the outer peripheral surface of the auxiliary ring 400, and the outer side surface of the magnetic steel ring 300 in the radial direction of the stopper 800 fits with the inner peripheral surface of the magnetic steel ring 300. In other words, when the magnetic steel group 200 is installed in the installation space, the inner side surface of the magnetic steel ring 300 in the radial direction of the magnetic steel ring 300 fits with the outer peripheral surface of the auxiliary ring 400, and the outer side surface of the magnetic steel ring 300 in the radial direction of the magnetic steel ring 300 fits with the inner peripheral surface of the magnetic steel ring 300.

[0117] It should be noted that in step S2, multiple installation tools 100 can be set, and the magnetic steel 201 can be installed in advance in the cavities 101 of the multiple installation tools 100 according to the installation requirements. Afterwards, in steps S3 and S4, the magnetic steel group 200 can be assembled simultaneously in multiple first installation areas, and after the magnetic steel glue on the inner circumference of the magnetic steel ring 300 is solidified, the magnetic steel group 200 can be assembled simultaneously in multiple second installation areas, thereby effectively saving assembly time and effectively improving assembly efficiency.

[0118] In this embodiment, a plurality of first installation areas and a plurality of second installation areas are set in the installation space, and the plurality of first installation areas and the plurality of second installation areas are alternately arranged along the circumference of the magnetic steel ring 300. When assembling the magnetic steel group 200, the assembly method also includes: first installing the magnetic steel groups 200 in the plurality of first installation areas, and then installing the magnetic steel groups 200 in the plurality of second installation areas, which can effectively reduce the mutual repulsion between the magnetic steel groups 200, thereby effectively ensuring the assembly effect, and further effectively improving the assembly efficiency.

[0119] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0120] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0121] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0122] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0123] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An installation tool for installing Halbach ring array magnetic steel, characterized in that: include: A cabin body, wherein a cavity is defined in the cabin body, wherein one side of the cavity is open in a first direction to form an open opening, wherein the cavity is suitable for accommodating a plurality of magnetic steels arranged in sequence in a second direction, wherein the first direction is an axial direction of the annular array magnetic steel, and the second direction is a circumferential direction of the annular array magnetic steel; a baffle, the baffle being arranged on the open side of the cabin body and being used for opening and closing the open port; A pushing member is disposed in the cavity and is movable between a first position and a second position along a first direction, wherein the pushing member is configured to push the magnet in the cavity to abut against the baffle when in the first position, and to push the magnet out of the cavity when moving from the first position to the second position.

2. The installation tool according to claim 1, characterized in that: There are multiple pushing members, and the multiple pushing members are arranged in sequence along the second direction. The multiple pushing members correspond to the multiple magnetic steels one by one.

3. The installation tool according to claim 2, characterized in that: Also includes: An elastic member is disposed in the cavity and connected between the pushing member and the cabin body, and is used for always pushing the pushing member to move to the second position.

4. The installation tool according to claim 3, characterized in that: The cabin body has a top wall arranged opposite to the open port in the first direction, and a guide hole is formed on the top wall and passes through the top wall along the first direction. The installation tool also includes a guide rod, one end of which is fixed to the pusher and the other end of which passes through the guide hole and extends to the outside of the cabin.

5. The installation tool according to claim 4, characterized in that: The elastic member is a spring, and the elastic member is sleeved on the guide rod. The other end of the guide rod away from the pusher is provided with a through hole, and the through hole penetrates the guide rod along the radial direction of the guide rod. The installation tool also includes: a limiting member, which is arranged in the through hole and has both ends extending out of the through hole. In the radial direction of the guide rod, the length of the limiting member is greater than the inner diameter of the spring.

6. The installation tool according to claim 4, characterized in that: Also includes: A pressing sleeve is sleeved on the outside of the cabin body and is movable relative to the cabin body along the first direction. The pressing sleeve is suitable for pushing the pushing member to move along the first direction through the guide rod.

7. The installation tool according to claim 6, characterized in that: A slider is formed on one of the cabin body and the pressure sleeve, and a slide groove is formed on the other one. The slide groove extends along a first direction, and the slider is slidably fitted in the slide groove along the first direction.

8. The installation tool according to claim 7, characterized in that: The slide groove is formed on the cabin body, and an installation groove is also formed on the cabin body. The installation groove and the slide groove are arranged at intervals in the second direction. One end of the installation groove passes through an end surface of the cabin body in the first direction, and the other end of the installation groove is connected to the slide groove through a connecting groove. The slider is configured to slide into the slide groove through the installation groove.

9. The installation tool according to any one of claims 1 to 8, characterized in that: The cavity has a first side wall and a second side wall arranged opposite to each other in the second direction, and the first side wall and the second side wall are respectively suitable for contacting two of the plurality of magnetic steels located at both ends in the second direction, so as to limit the displacement of the plurality of magnetic steels in the second direction.

10. The installation tool according to any one of claims 1 to 8, characterized in that: Grooves are formed on two side walls of the open opening that are opposite to each other in the third direction. The grooves extend along the second direction. The two side edges of the baffle in the third direction are slidably fitted in the two grooves.

11. The installation tool according to any one of claims 1 to 8, characterized in that: A cross section of the pushing member perpendicular to the first direction is configured to be consistent with a cross section of the magnetic steel.

12. The installation tool according to any one of claims 1 to 8, characterized in that: The pushing member is made of Teflon material, and the cabin body is made of Teflon material.

13. A method for assembling a Halbach ring array magnetic steel, characterized in that: The assembly method uses the installation tool according to any one of claims 1 to 12 to assemble the Halbach annular array magnetic steel, and the assembly method includes: S1, disposing a magnetic steel ring and an auxiliary ring radially inside and outside the magnetic steel ring to define an installation space for installing the magnetic steel between the magnetic steel ring and the auxiliary ring; S2, sequentially loading the plurality of magnetic steels into the cavity along the first direction, and bonding the plurality of magnetic steels in the cavity to form a magnetic steel group; S3, supporting the cabin body on one side of the magnetic steel ring and the auxiliary ring in the axial direction; S4, driving the pusher to push the magnetic steel group into the installation space; S5, repeating steps S2-S4 until the Halbach ring array magnetic steel assembly is completed.

14. The method for assembling the Halbach ring array magnetic steel according to claim 13, characterized in that: In step S2, before the plurality of magnetic steels are bonded and fixed to form the magnetic steel group, the step further includes: Detect and confirm that the magnetic circuits between the plurality of magnetic steels are correct.

15. The method for assembling the Halbach ring array magnetic steel according to claim 13, characterized in that: The installation space includes a plurality of first installation areas and a plurality of second installation areas, and the plurality of first installation areas and the plurality of second installation areas are alternately arranged along the circumference of the magnetic steel ring. In step S5, when steps S2-S4 are repeated, the assembly method further includes: first installing a plurality of the magnetic steel groups in the first installation area, and then installing a plurality of the magnetic steel groups in the second installation area.

Images