Full-automatic magnetic core processing machine
The fully automated magnetic core processing machine addresses polishing damage issues by using axial and radial polishing mechanisms with adjustable magnetic arrays for continuous, high-efficiency polishing without line changes.
Patent Information
- Application Number
- CN202510812867.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2045-06-18
AI Technical Summary
During the existing magnetic core processing, rigid clamping of polishing equipment leads to bumps, friction and scratches, and lacks volatility adaptability, resulting in irreversible damage.
The foldable radial polishing mechanism and the axial polishing mechanism are combined to achieve uninterrupted continuous polishing of the core through a controllable magnetic array and polishing replacement parts. Combined with the polishing drive ring and the cycle control component, the uninterrupted polishing and accuracy adjustment of the core are achieved.
The continuous polishing processing of the magnetic core without assembly line replacement is achieved, which improves processing efficiency and precision adaptability, and reduces damage to the magnetic core by the equipment.
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Figure CN120307176A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field related to magnetic core processing equipment, and particularly relates to a full-automatic magnetic core processing machine. Background Art
[0002] A magnetic core is an important core component used in the field of electrical equipment, and is widely used in technical fields such as electronic information, electromechanics, automobiles, metallurgy, aerospace, and transportation. In order to ensure the use effect of the magnetic core in different devices, the surface polishing of the magnetic core is a very important processing step.
[0003] In the prior art, when performing processing and polishing, it is usually necessary to switch production lines, and during polishing, a rigid clamping method of the polishing equipment is usually used. In this process, for the magnetic core, the probability of bumping, rubbing, or scratching with the equipment is relatively high, and the rigid clamping method does not have a fluctuating adaptive buffer during the moving polishing process, and large particle flaws and dust will cause irreversible damage during polishing. Summary of the Invention
[0004] The purpose of the embodiments of the present invention is to provide a full-automatic magnetic core processing machine, aiming to solve the problems proposed in the background art.
[0005] The embodiments of the present invention are implemented as follows. A full-automatic magnetic core processing machine includes a horizontally arranged polishing assembly for magnetic core polishing. The polishing assembly includes an axial polishing mechanism and radial polishing mechanisms symmetrically arranged on both sides of the axial polishing mechanism; The number of the axial polishing mechanisms is multiple, and the multiple axial polishing mechanisms are evenly distributed along the circumferential direction of the central axis mechanism; The radial polishing mechanisms are hinged to the axial polishing mechanism at positions on both sides of the axial polishing mechanism, and the rotation stroke of the radial polishing mechanism is 90 degrees. When the radial polishing mechanism is at the minimum angle, it is collinear with the axial polishing mechanism, and when the radial polishing mechanism is at the maximum angle, it is perpendicular to the axial polishing mechanism; Controllable magnetic arrays are evenly distributed along the length direction on both the axial polishing mechanism and the radial polishing mechanism, and polishing replacement parts are respectively arranged at intervals from the axial polishing mechanism and the radial polishing mechanism on the side away from the central axis mechanism. The polishing replacement parts are used for frictionally cooperating with the surface of the magnetic core to achieve polishing.
[0006] As a further solution of the present invention: The axial polishing mechanism includes an axial bracket fixedly installed through a horizontally arranged central axis mechanism. A telescopic control rod is vertically arranged on the axial bracket, and the polishing replacement part is arranged at an interval from the axial bracket at the end of the telescopic control rod; The radial polishing mechanism includes a radial bracket hinged to the axial bracket. The end of the radial bracket is hinged to the axial bracket through a radial driving rod arranged as a telescopic structure. When the extended length of the radial driving rod changes, it drives the radial bracket to rotate. A polishing telescopic member is vertically provided on the radial bracket, and the polishing replacement members are arranged at intervals at the end of the polishing telescopic member.
[0007] As a further solution of the present invention: the controllable magnetic array on the axial polishing mechanism is inclined towards the material advancing direction of the polishing assembly; The controllable magnetic arrays on the radial polishing mechanism are symmetrically distributed in two groups along the central cross-section of the radial polishing mechanism, and are all inclined towards the central cross-section. Each group of controllable magnetic arrays is magnetically enhanced in the direction away from the central cross-section, and each group of controllable magnetic arrays can be independently controlled; The polishing assembly further includes a polishing driving ring coaxially arranged with the central axis mechanism. The polishing driving ring is symmetrically arranged based on the central cross-section, and the polishing driving ring is used to drive the magnetic core to rotate through magnetic force.
[0008] As a further solution of the present invention: it further includes a cycle control component, specifically including: A material changing control unit, used to control multiple radial polishing mechanisms to be at a horizontal angle through the radial driving rod, control multiple polishing replacement members to be in the same horizontal plane through the telescopic control rod and the polishing telescopic member, and control the start of the controllable magnetic arrays of the axial polishing mechanism and the radial polishing mechanism; A cooperation control unit, used to control multiple radial polishing mechanisms to be at an angle perpendicular to the axial polishing mechanism through the radial driving rod, control the cooperation between the polishing replacement member and the surface of the magnetic ring through the extended lengths of the telescopic control rod and the polishing telescopic member, and control the closing of the controllable magnetic array of the axial polishing mechanism; A polishing control unit, used to control the alternately strong and weak changes of the magnetic field of the polishing driving ring through a preset cycle control signal to drive the magnetic ring to rotate.
[0009] As a further solution of the present invention: the central axis mechanism specifically includes a reference central axis arranged in the horizontal direction; The length of the reference central axis is consistent with the total length of the axial polishing mechanism and the radial polishing mechanisms on both sides; Axial connection disks are provided at both ends of the reference central axis in the cross-sectional plane, and adjacent polishing assemblies are connected through the axial connection disks; The central axis mechanism further includes radial extension members radially arrayed at the central cross-section of the reference central axis, and the axial polishing mechanism is installed on the radial extension members.
[0010] As a further solution of the present invention: it further includes a material returning component arranged at the end of the polishing assembly: The material return assembly comprises a guide shell bent downward, and a buffer shell vertically arranged at the end of the guide shell; A buffer magnetic array is arranged in the buffer shell, and the buffer magnetic array is arranged obliquely upward to slow down the sliding speed of the magnetic core through magnetic repulsion.
[0011] As a further solution of the present invention: a roller skating mechanism is also provided in the guide shell: The wheel pulley mechanism includes an adjusting wheel pulley frame and fixed wheel pulley frames arranged on both sides of the adjusting wheel pulley frame. The adjusting wheel pulley frame and the fixed wheel pulley frame are both arranged along the length direction of the guide shell. The adjusting wheel pulley frame and the fixed wheel pulley frame are provided with a plurality of pulleys distributed at intervals, and the pulleys are arranged higher than the guide shell.
[0012] A fully automatic magnetic core processing machine provided by an embodiment of the present invention achieves a tubular storage effect of the polishing assembly by setting a foldable radial polishing mechanism and an axial polishing mechanism, thereby being able to store the polishing assembly in a processing production line for annular magnetic cores, and perform uninterrupted continuous polishing processing without the need for assembly line replacement during the transportation of the magnetic cores. Polishing combinations of different precisions can be achieved by replacing polishing replacement parts. Compared with existing technologies, the continuous flow method can greatly optimize processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A three-dimensional structural diagram of a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 2 A schematic diagram of an expanded polishing assembly in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 3 A schematic diagram of the coordination of a polishing drive ring in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 4 A schematic diagram of the coordination of an axial polishing mechanism in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a radial polishing mechanism in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 6 A schematic structural diagram of a central axis mechanism in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 7 A structural schematic diagram of a material return assembly in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 8 A schematic diagram of the mechanism coordination of a material return assembly in a fully automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 9Schematic diagram of the cooperation of the roller mechanism in a full-automatic magnetic core processing machine provided by an embodiment of the present invention; Figure 10 Schematic diagram of the structure of a fixed roller frame in a full-automatic magnetic core processing machine provided by an embodiment of the present invention.
[0014] In the drawings: 1 - polishing assembly, 11 - central axis mechanism, 111 - reference central axis, 112 - radial extension member, 113 - axial connection disk, 12 - axial polishing mechanism, 121 - axial support, 122 - controllable magnetic array, 123 - polishing replacement part, 13 - radial polishing mechanism, 131 - radial support, 132 - polishing telescopic member, 14 - polishing drive ring, 15 - radial drive rod, 2 - material return assembly, 21 - guide shell, 22 - roller mechanism, 221 - fixed roller frame, 222 - adjustable roller frame, 23 - buffer shell, 24 - buffer magnetic array. Specific embodiments
[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0016] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.
[0017] As Figures 1 to 3 and Figure 5 shown, a full-automatic magnetic core processing machine provided by an embodiment of the present invention includes a horizontally arranged polishing assembly 1 for magnetic core polishing, and the polishing assembly 1 includes an axial polishing mechanism 12 and radial polishing mechanisms 13 symmetrically arranged on both sides of the axial polishing mechanism 12; The number of the axial polishing mechanisms 12 is multiple, and the multiple axial polishing mechanisms 12 are evenly distributed along the circumferential direction of the central axis mechanism 11; The radial polishing mechanisms 13 are hinged to the axial polishing mechanism 12 at both sides of the axial polishing mechanism 12, and the rotation stroke of the radial polishing mechanism 13 is 90 degrees. When the radial polishing mechanism 13 is at the minimum angle, it is collinear with the axial polishing mechanism 12, and when the radial polishing mechanism 13 is at the maximum angle, it is perpendicular to the axial polishing mechanism 12; Controllable magnetic arrays 122 are evenly distributed along the length direction on both the axial polishing mechanism 12 and the radial polishing mechanism 13, and polishing replacement parts 123 are respectively arranged at intervals from the axial polishing mechanism 12 and the radial polishing mechanism 13 on the side far from the central axis mechanism 11. The polishing replacement parts 123 are used for frictional cooperation with the surface of the magnetic core to achieve polishing.
[0018] In an embodiment of the present invention, a fully automatic magnetic core processing machine is provided. Through the arrangement of the foldable radial polishing mechanism 13 and the axial polishing mechanism 12, the tubular storage effect of the polishing assembly 1 is achieved. Furthermore, the polishing assembly 1 can be stored in the processing production line of the annular magnetic core, and continuous polishing processing without replacing the production line can be carried out during the transportation of the magnetic core. Different precision polishing combinations can be achieved by replacing the polishing replacement part 123. Compared with the prior art, the continuous flow method can greatly optimize the processing efficiency.
[0019] In an embodiment of the present invention, the specific implementation process is as follows. First, the polishing assembly 1 can be installed at any process position in the middle or at the end of the production line where magnetic core polishing can be carried out. In the initial state, the radial polishing mechanism 13 and the axial polishing mechanism 12 are in a straight line state (i.e., the rotation angle is 0 degrees). At this time, the magnetic core is sent into the polishing assembly 1 and pushed into the axial polishing mechanism 12 under the action of the controllable magnetic array 122. The radial polishing mechanism 13 then rotates to the 90-degree position to clamp the magnetic core laterally, and thus simultaneous polishing of the inner diameter and the side of the magnetic core can be achieved. After polishing is completed, the polished magnetic core is sent out by resetting the radial polishing mechanism 13 again and a new magnetic core is introduced, thereby realizing a high-efficiency polishing processing cycle. At the same time, different polishing precisions and adaptation to magnetic cores to be polished with different structural sizes can be achieved by replacing the polishing replacement part 123 and changing its setting interval.
[0020] As Figures 1 to 5 shown, as a preferred embodiment of the present invention, the axial polishing mechanism 12 includes an axial bracket 121 fixedly installed through a horizontally arranged central axis mechanism 11. A telescopic control rod is vertically provided on the axial bracket 121. The polishing replacement part 123 is arranged at an interval between the end of the telescopic control rod and the axial bracket 121. The radial polishing mechanism 13 includes a radial bracket 131 hinged to the axial bracket 121. The end of the radial bracket 131 is hingedly connected to the axial bracket 121 through a radially driving rod 15 provided as a telescopic structure. When the extended length of the radially driving rod 15 changes, the radial bracket 131 is driven to rotate. A polishing telescopic member 132 is vertically provided on the radial bracket 131. The polishing replacement part 123 is arranged at an interval at the end of the polishing telescopic member 132.
[0021] Furthermore, the controllable magnetic array 122 on the axial polishing mechanism 12 is inclined towards the material advancing direction of the polishing assembly 1. The controllable magnetic arrays 122 on the radial polishing mechanism 13 are symmetrically distributed in two groups along the central cross-section of the radial polishing mechanism 13, and are all inclined towards the central cross-section. The magnetic force of each group of controllable magnetic arrays 122 increases in the direction away from the central cross-section, and each group of controllable magnetic arrays 122 can be independently controlled; The polishing assembly 1 further includes a polishing drive ring 14 coaxially arranged with the central axis mechanism 11. The polishing drive ring 14 is symmetrically arranged based on the central cross-section, and the polishing drive ring 14 is used to drive the magnetic core to rotate through magnetic force.
[0022] Further, as a preferred embodiment of the present invention, it further includes a cycle control component, specifically including: A material replacement control unit, used to control multiple radial polishing mechanisms 13 to be at a horizontal angle through the radial drive rod 15, control multiple polishing replacement parts 123 to be in the same horizontal plane through the telescopic control rod and the polishing telescopic part 132, and control the start of the controllable magnetic arrays 122 of the axial polishing mechanism 12 and the radial polishing mechanism 13; A cooperation control unit, used to control multiple radial polishing mechanisms 13 to be at an angle perpendicular to the axial polishing mechanism through the radial drive rod 15, control the cooperation between the polishing replacement part 123 and the surface of the magnetic ring through the extended length of the telescopic control rod and the polishing telescopic part 132, and control the shutdown of the controllable magnetic array 122 of the axial polishing mechanism 12; A polishing control unit, used to control the magnetic field of the polishing drive ring 14 to alternately change in strength through a preset cycle control signal to drive the magnetic ring to rotate.
[0023] In one embodiment of the present invention, the axial polishing mechanism 12 and the radial polishing mechanism 13 are described, which mainly include the hinged manner of the radial polishing mechanism 13, where there is a gap reserved between the hinge point and the end, and the end is driven and connected through the radial driving rod 15. During use, the rotation angle is controlled by the telescopic movement of the radial driving rod 15; for the polishing replacement part 123, a telescopic structure is provided between the remaining radial polishing mechanism 13 and the axial polishing mechanism 12 to adjust their intervals to adapt to different magnetic core parts; for the setting of the controllable magnetic array 122, it mainly has two purposes. One is to provide power for the magnetic core and send it into the center of the polishing assembly 1; the other is to accurately position the magnetic core and determine it at the center position of the axial polishing mechanism 12. Therefore, the controllable magnetic array 122 provided on the radial polishing mechanism 13 is designed to be inclined along the track. During use, it can push the magnetic core to be stressed and slide in one direction, while the controllable magnetic array 122 on the axial polishing mechanism 12 is symmetrically arranged towards the center. By setting the strength gradient of the magnetic force, when the magnetic ring distribution is asymmetric, the force is unbalanced and it moves towards the center position to achieve the positioning purpose; the polishing driving ring 14 realizes the rotation control of the magnetic core through the control of alternating magnetic fields. Polishing is carried out based on the self-rotation mode of the magnetic core, which is more stable and safe compared to the rotation mode of the polishing equipment; additionally, the circulation control component controls the flow polishing process based on these controllable structures, mainly including steps such as feeding and discharging, polishing coordination control, and polishing control.
[0024] As Figure 1 and Figure 6 shown, as another preferred embodiment of the present invention, the central axis mechanism 11 specifically includes a reference central axis 111 arranged along the horizontal direction; The length of the reference central axis 111 is the same as the total length of the axial polishing mechanism 12 and the radial polishing mechanisms 13 on both sides; Axial connection disks 113 are provided at both ends of the reference central axis 111 in the cross-sectional plane, and adjacent polishing assemblies 1 are connected through the axial connection disks 113; The central axis mechanism 11 further includes radially extending members 112 radially arrayed at the central cross-section of the reference central axis 111, and the axial polishing mechanism 12 is mounted on the radially extending members 112.
[0025] In an embodiment of the present invention, the arrangement of the central axis mechanism 11 can achieve the continuous splicing of the efficient polishing component 1, thereby realizing the polishing requirements of different polishing precisions in multiple processes, forming a polishing equipment assembly line that can be arbitrarily added and adjusted, and having better expandability and demand adaptability; when the radial extension member 112 is in use, by changing the number of its array installations along the radial direction, the spacing of the axial polishing mechanism 12 can be adjusted within a large range (much larger than the telescopic adjustable interval range of the controllable magnetic array 122), so as to adapt to magnetic cores with different inner diameters.
[0026] As Figures 7 to 10 shown, as another preferred embodiment of the present invention, it further includes a return material component 2 provided at the end of the polishing component 1: The return material component 2 includes a guiding shell 21 bent downward, and a buffer shell 23 vertically provided at the end of the guiding shell 21; A buffer magnetic array 24 is provided in the buffer shell 23, and the buffer magnetic array 24 is inclined upward for slowing down the sliding speed of the magnetic core through magnetic repulsion.
[0027] Furthermore, a roller skating mechanism 22 is further provided in the guiding shell 21: The roller skating mechanism 22 includes an adjustable roller skating frame 222 and fixed roller skating frames 221 provided on both sides of the adjustable roller skating frame 222. The adjustable roller skating frame 222 and the fixed roller skating frames 221 are both arranged along the length direction of the guiding shell 21. A plurality of spaced pulleys are provided on the adjustable roller skating frame 222 and the fixed roller skating frames 221, and the pulleys are arranged higher than the guiding shell 21.
[0028] In an embodiment of the present invention, the return material component 2 is supplemented, which is used at the tail end of the polishing component 1 at the end of the processing procedure. When the polishing is completed and the assembly line needs to be replaced or stored, it is guided into the target position through the return material component 2, and its falling speed is slowed down under the action of the buffer magnetic array 24, avoiding damage caused by high-speed falling and collision during the transfer process. Among them, the roller skating mechanism 22 reduces the friction between the magnetic core and the guiding shell 21 through the surface rollers, and the adjustable roller skating frame 222 can be adjusted adaptively in the overall length by adjusting the installation position with the fixed roller skating frame 221 to cooperate with the adjustment of the radial extension member 112 (the assembly length of the guiding shell 21 needs to be correspondingly reduced).
[0029] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A fully automatic magnetic core processing machine, characterized in that, It includes a horizontally arranged polishing component (1) for magnetic core polishing. The polishing component (1) includes an axial polishing mechanism (12) and radial polishing mechanisms (13) symmetrically arranged on both sides of the axial polishing mechanism (12). The number of the axial polishing mechanisms (12) is multiple, and the multiple axial polishing mechanisms (12) are evenly distributed along the circumferential direction of the central axis mechanism (11). The radial polishing mechanisms (13) are hinged to the axial polishing mechanism (12) at both sides of the axial polishing mechanism (12), and the rotation stroke of the radial polishing mechanism (13) is 90 degrees. When the radial polishing mechanism (13) is at the minimum angle, it is collinear with the axial polishing mechanism (12), and when the radial polishing mechanism (13) is at the maximum angle, it is perpendicular to the axial polishing mechanism (12). Controllable magnetic arrays (122) evenly distributed along the length direction are provided on both the axial polishing mechanism (12) and the radial polishing mechanism (13), and polishing replacement parts (123) are respectively arranged at intervals from the axial polishing mechanism (12) and the radial polishing mechanism (13) on the side far from the central axis mechanism (11). The polishing replacement parts (123) are used for frictionally cooperating with the surface of the magnetic core to achieve polishing.
2. The fully automatic magnetic core processing machine according to claim 1, characterized in that, The axial polishing mechanism (12) includes an axial support (121) fixedly installed through a horizontally arranged central axis mechanism (11). A telescopic control rod is vertically provided on the axial support (121), and the polishing replacement part (123) is arranged at an interval from the axial support (121) at the end of the telescopic control rod. The radial polishing mechanism (13) includes a radial support (131) hinged to the axial support (121). The end of the radial support (131) is hinged to the axial support (121) through a radial driving rod (15) arranged as a telescopic structure. When the extended length of the radial driving rod (15) changes, it drives the radial support (131) to rotate. A polishing telescopic part (132) is vertically provided on the radial support (131), and the polishing replacement part (123) is arranged at an interval at the end of the polishing telescopic part (132).
3. The fully automatic magnetic core processing machine according to claim 2, wherein The controllable magnetic array (122) on the axial polishing mechanism (12) is arranged obliquely towards the material advancing direction of the polishing component (1). The controllable magnetic arrays (122) on the radial polishing mechanism (13) are symmetrically distributed in two groups along the central cross-section of the radial polishing mechanism (13), and are all arranged obliquely towards the central cross-section. Each group of controllable magnetic arrays (122) is magnetically enhanced along the direction away from the central cross-section, and each group of controllable magnetic arrays (122) can be independently controlled. The polishing component (1) further includes a polishing driving ring (14) coaxially arranged with the central axis mechanism (11). The polishing driving ring (14) is symmetrically arranged based on the central cross-section, and the polishing driving ring (14) is used to drive the magnetic core to rotate through magnetic force.
4. The fully automatic magnetic core processing machine according to claim 3, characterized in that, It further includes a circulation control component, specifically including: The refueling control unit is used to control multiple radial polishing mechanisms (13) at a horizontal angle through a radial drive rod (15), control multiple polishing replacement parts (123) in the same horizontal plane through a telescopic control rod and a polishing telescopic part (132), and control the start of the controllable magnetic arrays (122) of the axial polishing mechanism (12) and the radial polishing mechanisms (13); The cooperation control unit is used to control multiple radial polishing mechanisms (13) at an angle perpendicular to the axial polishing mechanism through a radial drive rod (15), control the cooperation between the polishing replacement part (123) and the surface of the magnetic ring by the extension length of the telescopic control rod and the polishing telescopic part (132), and control the shutdown of the controllable magnetic array (122) of the axial polishing mechanism (12); The polishing control unit is used to control the alternating strong and weak changes of the magnetic field of the polishing drive ring (14) through a preset cyclic control signal to drive the magnetic ring to rotate.
5. The fully automatic magnetic core processing machine according to claim 1, wherein, The central axis mechanism (11) specifically includes a reference central axis (111) arranged in the horizontal direction; The length of the reference central axis (111) is consistent with the total length of the axial polishing mechanism (12) and the radial polishing mechanisms (13) on both sides; Axial connection disks (113) are provided at both ends of the reference central axis (111) in the cross-sectional plane, and adjacent polishing assemblies (1) are connected through the axial connection disks (113); The central axis mechanism (11) further includes radial extension parts (112) radially and arrayedly distributed at the central cross-section of the reference central axis (111), and the axial polishing mechanism (12) is installed on the radial extension parts (112).
6. The fully automatic magnetic core processing machine according to claim 1, characterized in that It further includes a material return assembly (2) arranged at the end of the polishing assembly (1): The material return assembly (2) includes a guiding shell (21) bent downward, and a buffer shell (23) vertically arranged at the end of the guiding shell (21); A buffer magnetic array (24) is arranged in the buffer shell (23), and the buffer magnetic array (24) is inclined upward to slow down the sliding speed of the magnetic core through magnetic repulsion.
7. The full-automatic magnetic core processing machine according to claim 6, characterized in that A roller skating mechanism (22) is further arranged in the guiding shell (21): The roller skating mechanism (22) includes an adjustable roller skating frame (222) and fixed roller skating frames (221) arranged on both sides of the adjustable roller skating frame (222). The adjustable roller skating frame (222) and the fixed roller skating frames (221) are both arranged along the length direction of the guiding shell (21). A plurality of spaced pulleys are arranged on the adjustable roller skating frame (222) and the fixed roller skating frames (221), and the pulleys are arranged higher than the guiding shell (21).
Citation Information
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