Magnetic damping speed regulation tackle

Abstract

The invention relates to the technical field of recreation facilities, in particular to a magnetic damping speed regulation tackle which comprises a frame, a pulley block and a speed regulation assembly, the pulley block and the speed regulation assembly are installed on the frame, and the pulley block comprises a pulley in rotating contact with a steel wire rope. The magnetic source structure comprises a magnetic part which is fixedly installed on the frame and arranged along the periphery of the pulley, the centrifugal speed regulation structure comprises a plurality of centrifugal blocks and elastic parts which are evenly distributed around the center of the pulley, and the centrifugal blocks are hinged to the pulley and have the contraction state of being close to the center of the pulley under the action of the elastic parts and the expansion state of being expanded under the action of centrifugal force when the pulley rotates. The centrifugal block in the contraction state is used for enabling the pulley to freely move on the steel wire rope, and the centrifugal block in the expansion state is used for cooperating with the magnetic part to generate magnetic damping; by arranging the centrifugal speed regulation structure and the magnetic source structure, the resistance of the pulley can be flexibly adjusted according to different working conditions, the using convenience and applicability of the pulley are improved, and meanwhile the strength of the pulley can be prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of amusement facilities, and particularly to a magnetic damping speed-regulating trolley. Background Art

[0002] A zip line is a common amusement project and extreme sport in scenic areas. It uses the action of gravity to allow passengers to wear special flexible slings and hang under a sliding trolley, with a slanted steel cable as the track, and slide rapidly from a high place to a low place.

[0003] To ensure the safety of tourists when taking a zip line, the maximum speed of the trolley sliding on the zip line needs to be restricted during operation. Therefore, a deceleration device is usually provided downstream of the trolley and the zip line to reduce the inertial impact force when the tourist slides to the downstream of the zip line. Common zip line deceleration devices generally achieve the deceleration of the trolley by setting friction members that are in frictional contact with the steel wire rope.

[0004] For example, the Chinese patent document with the authorization announcement number CN207221295U discloses a zip line device capable of decelerating. The device includes a bracket, a main cable, a spacer bar, a deceleration spring, a deceleration rubber block, and a small trolley. The main cable is arranged on the bracket, the small trolley is arranged on the main cable, and the spacer bar, the deceleration spring, and the deceleration rubber block are also arranged on the main cable. It also includes a braking device, and the braking device includes a braking rubber block that is in frictional contact with the zip line. The device brakes by friction between the rubber block and the zip line. Long-term use will accelerate the wear of the zip line. At the same time, the rubber block, as a consumable, will increase the maintenance cost. In addition, serious wear may lead to the phenomenon of brake failure, which has certain potential safety hazards.

[0005] To solve the above problems, there is also a method in the prior art to achieve the deceleration of the trolley through electromagnetic damping. For example, the Chinese patent document with the authorization announcement number CN221846044U discloses a magnetic damping trolley capable of reducing speed, including a sliding body main board. Both ends of the sliding body main board are installed with limiting side plates. The center position of the sliding body main board is installed with a U-shaped fixing plate. The two ends of the U-shaped fixing plate are rotatably installed with rotating connection rings. Column-shaped strong magnets are installed around the rotating connection rings. A combing pulley is sleeved outside the rotating connection rings. The column-shaped strong magnets and the aluminum sliding body main board move relative to each other. Due to the change in magnetic flux, an eddy current induction magnetic field can be generated. The new magnetic field always hinders the original magnetic field, and its repulsive force forms magnetic damping to reduce the rotation speed of the combing pulley to achieve the purpose of decelerating the slider.

[0006] The above-mentioned pulley eliminates the safety hazards and cost consumption problems brought by the friction zip-line deceleration braking. However, in this pulley, magnets are embedded in the pulley, and the deceleration of the pulley is achieved through the damping effect between the magnets and the outer sliding body main board. This will cause magnetic damping to always exist during the movement of the pulley on the zip-line. Furthermore, it will cause additional energy loss when the pulley returns to the upper platform, and it is easy for the pulley to stay on the steel wire rope due to magnetic damping when the pulley slides to the end of the zip-line and cannot reach the lower platform, thus affecting the safety of passengers.

[0007] At the same time, the braking force of the above-mentioned magnetic damping pulley during operation only depends on the rotation speed of the pulley, and its adjustment range is small. The braking force of the pulley may be insufficient when it runs at high speed. The braking performance of the pulley is an important factor affecting the location selection and construction of the zip-line. The zip-line facilities with large height differences usually have higher sliding speeds during operation, so higher requirements are imposed on the braking performance of the pulley. However, the braking force of the above-mentioned pulley is limited and not applicable to the zip-line facilities with large height differences. Furthermore, it will also limit the maximum allowable height difference of the zip-line during the location selection and construction of the zip-line, and its applicability is poor.

[0008] In addition, magnetic damping results from the eddy current effect between the cylindrical strong magnet and the sliding body main board, and the eddy current effect will cause the sliding body main board to heat up when the pulley slides. During long-term use, it may cause the strength of the sliding body main board, which is the main support structure, to decrease due to thermal fatigue, posing certain safety hazards. Summary of the Invention

[0009] The present invention provides a magnetic damping speed regulation pulley, which can not only flexibly adjust the damping of the pulley, but also avoid the influence of the thermal effect of eddy currents on the strength of the pulley.

[0010] To solve the above problems, the magnetic damping speed regulation pulley provided by the present invention adopts the following technical solutions: A magnetic damping speed regulation pulley includes a frame, a pulley set installed on the frame, and a speed regulation component. The pulley set includes a pulley that rotates in contact with a steel wire rope. The speed regulation component includes a magnetic source structure and a centrifugal speed regulation structure. The magnetic source structure includes a magnetic member fixedly installed on the frame and arranged along the outer circumference of the pulley. The centrifugal speed regulation structure includes a plurality of centrifugal blocks evenly distributed around the pulley center and an elastic member. The centrifugal blocks are hinged to the pulley and have a contracted state in which they are close to the pulley center under the action of the elastic member and an expanded state in which they are expanded under the action of centrifugal force when the pulley rotates. The centrifugal blocks in the contracted state are used to enable the pulley to move freely on the steel wire rope, and the centrifugal blocks in the expanded state are used to cooperate with the magnetic member to generate magnetic damping.

[0011] A magnetic damping speed regulating pulley of the present invention is provided with centrifugal blocks that gradually unfold as the pulley rotates, magnetic members fixedly installed on the frame, and elastic members. When the pulley rotates at a low speed, the centrifugal blocks can maintain a contracted state away from the magnetic members under the pulling force of the elastic members, so that the pulley can move freely without being affected by magnetic damping during low-speed operation; when the pulley rotates at a high speed, the centrifugal force received by the centrifugal blocks overcomes the pulling force of the elastic members, causing the centrifugal blocks to unfold around the center of the pulley. The centrifugal blocks in the unfolded state cooperate with the magnetic members to generate magnetic damping, thereby being able to reduce the rotational speed of the pulley and play a role in decelerating the pulley. When the pulley is running, the unfolding radius of the centrifugal blocks will also gradually increase with the increase in the rotational speed of the pulley. Furthermore, when the rotational speed of the centrifugal blocks increases, the area of the centrifugal blocks cutting the magnetic field will also gradually increase, making the pulley have a stronger braking force during high-speed sliding and improving the applicability of the pulley.

[0012] In addition, since the centrifugal blocks rotate synchronously with the pulley, the heat generated inside the centrifugal blocks due to the eddy current effect can be quickly eliminated while the centrifugal blocks rotate at a high speed. Compared with the prior art method of induction deceleration through the sliding body main board, setting the induction structure on the pulley can not only avoid the influence of the thermal effect of eddy currents on the strength of the pulley, but also enable the heat to be quickly eliminated with the rotation of the centrifugal blocks, improving the service life of the speed regulating component.

[0013] Furthermore, the magnetic source structure further includes a plurality of magnetic member fixing plates located on the front and rear sides of the pulley. The magnetic member fixing plates are annular plates, and the magnetic member fixing plates are provided with a plurality of mounting holes for detachably mounting the magnetic members.

[0014] The beneficial effect is that by providing a plurality of mounting holes on the magnetic member fixing plates, the staff can adjust the number of installed magnetic members according to different speed requirements, improving the applicability of the pulley.

[0015] Furthermore, the centrifugal blocks are evenly arranged around the axis of the pulley. The outer edge of the centrifugal block is a convex arc, and its inner edge is a concave arc. When each centrifugal block is in a contracted state, they form an annular structure around the axis of the pulley, and the outer diameter of the annular structure is smaller than the inner diameter of the magnetic member fixing plate.

[0016] The beneficial effect is that the design of evenly arranging the centrifugal blocks around the axis of the pulley and forming a ring in the contracted state makes the structure of the speed regulating component more compact while meeting the deceleration function, reducing the volume and weight of the pulley.

[0017] Furthermore, the magnetic members are cylindrical magnets, and the number of magnets is multiple, which are used to cooperate with the centrifugal blocks to generate magnetic damping and adjust the sliding speed of the pulley by adjusting the number of magnets.

[0018] Furthermore, the centrifugal speed control structure further includes a centrifugal block fixing plate and a limiting post. The centrifugal block fixing plate is fixedly installed on both the front and rear sides of the pulley, and the centrifugal block is located between the pulley and the centrifugal block fixing plate. The centrifugal block fixing plate has arc-shaped limiting grooves corresponding to each centrifugal block. The limiting posts are fixedly installed on each centrifugal block, and the limiting posts are movably assembled in the limiting grooves to limit the unfolding radius of the centrifugal block.

[0019] Furthermore, the centrifugal block fixing plate has fixing blocks corresponding to each limiting post. The elastic member is a tension spring, and the two ends of the tension spring are respectively connected to the limiting post and the corresponding fixing block to provide a pulling force for the centrifugal block to approach the center of the pulley.

[0020] Furthermore, the upper end of the frame has a hook plate with a hook thereon for cooperating with the rescue operation of the pulley block.

[0021] Furthermore, the frame includes a front side plate, a rear side plate, a left end plate, a right end plate, end covers, and a hanging plate. The left end plate and the right end plate are located between the front side plate and the rear side plate and are fixedly connected to the front side plate and the rear side plate. The number of end covers is multiple, and the end covers are located at the front and rear ends of each axle and are respectively fixed on the front side plate and the rear side plate for carrying the pulley. The hanging plate is fixed at the lower ends of the front side plate and the rear side plate for hanging personnel / objects.

[0022] Furthermore, the pulley block further includes an axle and bearings. The pulley is sleeved on the axle. The number of bearings is multiple, and the bearings are assembled on each end cover. The front and rear ends of the axle are assembled on the bearings.

[0023] Furthermore, the material of the centrifugal block is copper to improve the heat dissipation performance of the centrifugal block while ensuring the braking force.

[0024] The beneficial effects are as follows: Copper metal has good electrical conductivity and heat dissipation performance. By using copper material to make the centrifugal block, it can not only ensure the braking force of the pulley block during high-speed operation but also quickly dissipate heat, extending the service life of the centrifugal block.

[0025] The beneficial effects of the magnetic damping speed control pulley block provided by the present invention are: 1. A magnetic damping speed regulation pulley of the present invention is provided with a centrifugal block that gradually unfolds as the pulley rotates, a magnetic member fixedly installed on the frame, and an elastic member. When the pulley rotates at a low speed, the centrifugal block can maintain a contracted state away from the magnetic member under the pulling force of the elastic member, so that the pulley can move freely without being affected by magnetic damping during low-speed operation. When the pulley rotates at a high speed, the centrifugal force acting on the centrifugal block overcomes the pulling force of the elastic member, causing the centrifugal block to unfold around the center of the pulley. The unfolded centrifugal block cooperates with the magnetic member to generate magnetic damping, thereby being able to reduce the rotational speed of the pulley and play a role in decelerating the pulley. During the operation of the pulley, the unfolding radius of the centrifugal block also gradually increases with the increase in the rotational speed of the pulley. Therefore, while the rotational speed of the centrifugal block increases, the area of the centrifugal block cutting the magnetic field also gradually increases, enabling the pulley to have a stronger braking force during high-speed sliding and improving the applicability of the pulley.

[0026] In addition, since the centrifugal block rotates synchronously with the pulley, the heat generated inside the centrifugal block due to the eddy current effect can be quickly dissipated while the centrifugal block rotates at a high speed. Compared with the prior art method of speed reduction by induction through the main board of the sliding body, setting the induction structure on the pulley can not only avoid the influence of the thermal effect of eddy currents on the strength of the pulley, but also enable the heat to be quickly dissipated as the centrifugal block rotates, thereby prolonging the service life of the speed regulation component.

[0027] 2. By providing a plurality of mounting holes on the fixing plate of the magnetic member, it enables the staff to adjust the installation quantity of the magnetic member according to different speed requirements, thereby improving the applicability of the pulley.

[0028] 3. Copper metal has good electrical conductivity and heat dissipation performance. By selecting copper material to make the centrifugal block, it can not only ensure the braking force of the pulley during high-speed operation, but also quickly dissipate heat, thereby prolonging the service life of the centrifugal block.

[0029] 4. The design that the centrifugal blocks are evenly arranged around the axis of the pulley and form a ring in the contracted state makes the structure of the speed regulation component more compact while meeting the deceleration function, reducing the volume and weight of the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By referring to the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become readily understood. In the drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 is a schematic structural diagram of a magnetic damping speed regulation pulley provided by the present invention; Figure 2 is Figure 1 a schematic structural diagram of the front side plate and the rear side plate in Figure 3Schematic diagram of the internal structure of a magnetic damping speed regulating pulley provided by the present invention; Figure 4 For Figure 3 Schematic diagram of the structure of the magnetic part fixing plate in Figure 5 For Figure 3 Schematic diagram of the centrifugal speed regulating structure in Figure 6 For Figure 5 Schematic diagram of the structure of the centrifugal block in Figure 7 For Figure 5 Schematic diagram of the structure of the centrifugal block fixing plate in Figure 8 For Figure 5 Schematic diagram of the structure of the centrifugal block protection plate in Figure 9 For Figure 5 Schematic diagram of the structure of the hook plate in Figure 10 Schematic diagram of the state of the centrifugal speed regulating structure when the centrifugal block is in the contracted state; Figure 11 Schematic diagram of the state of the centrifugal speed regulating structure when the centrifugal block is in the expanded state.

[0031] Explanation of reference numerals: 1. Frame; 11. Front side plate; 12. Rear side plate; 13. Left end plate; 14. Right end plate; 15. End cover; 16. Centrifugal block protection plate; 2. Pulley set; 21. Pulley; 22. Bearing; 23. Axle; 3. Speed regulating assembly; 31. Magnetic source structure; 311. Magnet; 312. Magnetic part fixing plate; 313. Mounting hole; 32. Centrifugal speed regulating structure; 321. Centrifugal block; 322. Limiting post; 323. Annular groove; 324. Centrifugal block fixing plate; 325. Limiting groove; 326. Fixed block; 327. Card slot; 328. Tension spring; 4. Hook plate assembly; 41. Hook plate; 42. Hook; 43. Third fixed shaft; 44. Thimble; 5. Hanging assembly; 51. Hanging plate; 52. First fixed shaft; 53. Second fixed shaft; 6. Steel wire rope. Detailed implementation manners

[0032] Next, with reference to several representative implementation manners of the present invention, the principles and spirits of the present invention will be explained in detail.

[0033] Embodiment 1 of a magnetic damping speed regulating pulley provided by the present invention: As Figures 1 to 11As shown in the figure, the magnetic damping speed-regulating pulley block includes a frame 1, a pulley block 2, a speed-regulating component 3, and a hook plate component 4. The pulley block 2, the speed-regulating component 3, and the hook plate component 4 are all installed on the frame 1. The pulley block 2 is used for rotational contact with the steel wire rope 6, and the speed-regulating component 3 is used to adjust the sliding speed of the pulley block on the steel wire rope 6. The hook plate component 4 is located at the upper end of the frame 1 and is used to cooperate with the rescue device for rescue operations when the pulley block stalls in the middle section of the steel wire rope 6. The hanging plate 51 is located at the lower end of the frame 1 and is used to carry tourists or objects. It is defined that the pulley block slides on the steel wire rope 6 in the left-right direction.

[0034] First, the frame 1 will be introduced below. As Figure 1 and Figure 2 shown, the frame 1 includes a front side plate 11, a rear side plate 12, a left end plate 13, a right end plate 14, end covers 15, and a hanging component 5. Both the front side plate 11 and the rear side plate 12 are 8-shaped plates extending in the left-right direction, and the front side plate 11 and the rear side plate 12 are arranged in parallel front and back. The left end plate 13 and the right end plate 14 are rectangular plates extending in the front-rear direction. The left end plate 13 and the right end plate 14 are located between the front side plate 11 and the rear side plate 12 and are respectively located at the left and right ends of the front side plate 11 and the right side plate. The front end of the front side plate 11 is fixedly connected to the left end plate 13 and the right end plate 14 by screws, and the rear end of the rear side plate 12 is fixedly connected to the left end plate 13 and the right end plate 14 by screws. The number of the end covers 15 is four, which are symmetrically installed on the front side of the front side plate 11 and the rear side of the rear side plate 12 by screws respectively, and are used to support the pulley block 2.

[0035] The hanging component 5 includes a hanging plate 51, a first fixed shaft 52, and a second fixed shaft 53. Both the first fixed shaft 52 and the second fixed shaft 53 extend in the front-rear direction and are fixed on the front side plate 11 and the rear side plate 12. The second fixed shaft 53 is located above the first fixed shaft 52. The hanging plate 51 is a plate-like structure extending in the up-down direction. The number of the hanging plates 51 is two. Both hanging plates 51 are sleeved on the first fixed shaft 52 and the second fixed shaft 53. The lower end of the hanging plate 51 has a hanging hole to carry objects or personnel.

[0036] Next, the pulley block 2 will be introduced. As Figure 3 shown, the pulley block 2 includes pulleys 21, axle shafts 23, and bearings 22. The number of both the pulleys 21 and the axle shafts 23 is two, and the number of the bearings 22 is four. The four bearings 22 are respectively assembled in the four end covers 15. The axle shaft 23 extends in the front-rear direction, and its front and rear ends are respectively assembled on the front and rear corresponding bearings 22. The two pulleys 21 are respectively assembled on two bearings 22 and are located between the front side plate 11 and the rear side plate 12. The lower end of the pulley 21 is in rotational contact with the steel wire rope 6 to support the sliding of the pulley block on the steel wire rope 6.

[0037] The speed control assembly 3 is introduced below. There are a total of four sets of speed control assemblies 3, which are respectively located on the front and rear sides of the two pulleys 21 and are symmetrically arranged front and back. Each set of speed control assembly 3 includes a magnetic source structure 31 and a centrifugal speed control structure 32. The magnetic source structure 31 is used to fix the magnet, and the centrifugal speed control structure 32 is used to decelerate the sliding carriage through the magnetic damping effect.

[0038] As Figure 3 and Figure 4 shown, the magnetic source structure 31 includes a magnetic member and a magnetic member fixing plate 312. The magnetic member is a magnet 311, and the number of magnets 311 is multiple. The magnetic member fixing plate 312 is an annular plate and is coaxially arranged with the pulley 21. The magnetic member fixing plate 312 is located between the front side plate 11 / rear side plate 12 and the pulley 21, and is fixedly installed on the rear side of the front side plate 11 / the front side of the rear side plate 12 by screws. The magnetic member fixing plate 312 has a plurality of circular mounting holes 313 arranged in a circular pattern. The mounting holes 313 are used to mount the magnets 311, and the magnets 311 are detachably mounted on the magnetic member fixing plate 312 through interference fit with the mounting holes 313. The staff can adjust the sliding speed of the sliding carriage by adjusting the number of magnets 311 mounted on the magnetic member fixing plate 312. In other embodiments, the fixing plate has a buckle structure corresponding to each mounting hole 313, and the magnet 311 is mounted in the mounting hole 313 through the buckle structure.

[0039] As Figures 5 to 7 shown, the centrifugal speed control assembly 3 includes a centrifugal block 321, a centrifugal block fixing plate 324, a limiting column 322 and an elastic member. The centrifugal block fixing plate 324 is a rectangular plate, which is sleeved on the wheel shaft 23 and is located on the front side / rear side of the pulley 21. The centrifugal block fixing plate 324 is fixedly installed on the pulley 21 by screws. The centrifugal block 321 is located between the pulley 21 and the centrifugal block fixing plate 324. The number of centrifugal blocks 321 in each centrifugal speed control assembly 3 is two, and the centrifugal blocks 321 are hinged on the front side / rear side of the pulley 21 and are evenly arranged around the wheel shaft 23. The centrifugal block 321 is made of copper material, which is used to cooperate with the magnet 311 to generate magnetic damping. The copper material has good electrical conductivity and heat dissipation, and can improve the service life of the centrifugal block 321 while ensuring the braking force of the sliding carriage. The number of limiting columns 322 in each centrifugal speed control assembly 3 is two. The limiting columns 322 extend in the front-back direction, and the two limiting columns 322 are respectively fixed on the two centrifugal blocks 321. The centrifugal block fixing plate 324 has two arc-shaped limiting grooves 325 evenly distributed around the wheel shaft 23, and the two limiting columns 322 are respectively assembled in the two limiting grooves 325 to limit the expansion radius of the centrifugal block 321.

[0040] On the centrifugal block fixing plate 324, corresponding to each limiting post 322, there is a fixing block 326. The fixing block 326 is a rectangular block protruding forward / backward. There is a clamping groove 327 on the fixing block 326. One end of the limiting post 322 away from the centrifugal block 321 has an annular groove 323 extending circumferentially. Both the clamping groove 327 and the annular groove 323 are used for installing elastic members. The elastic member is a tension spring 328. One end of the tension spring 328 is fixed on the fixing block 326, and the other end of the tension spring 328 is fixedly connected to the limiting post 322 to drive the centrifugal block 321 to approach the wheel shaft 23. The outer edge of the centrifugal block 321 is a convex arc, and the inner edge of the centrifugal block 321 is an arc concave to fit the wheel shaft 23. When the pulley 21 is stationary or rotating at a low speed, the centrifugal block 321 has a contracted state of closely adhering to the wheel shaft 23 under the action of the tension spring 328. At this time, the two centrifugal blocks 321 form an annular structure around the wheel shaft 23, and the outer diameter of the annular structure is smaller than the inner diameter of the magnetic member fixing plate 312 to avoid magnetic damping during the low-speed operation of the trolley.

[0041] When the rotational speed of the pulley 21 increases to a certain value, the centrifugal block 321 has an expanded state of overcoming the tension of the tension spring 328 under the action of centrifugal force. In the expanded state, the centrifugal block 321 can generate an eddy current effect under the action of the magnet 311, thereby generating a magnetic field with a reaction force to the magnet 311, and then realizing the deceleration of the trolley. In addition, as the rotational speed of the pulley 21 increases, the rotational speed of the centrifugal block 321 and the degree of expansion of the centrifugal block 321 will also gradually increase, so that the reaction force between the centrifugal block 321 and the magnet 311 gradually increases.

[0042] The frame 1 further includes two centrifugal block protection plates 16. As Figure 3 and Figure 8 shown, the centrifugal block protection plate 16 is an 8-shaped plate. The centrifugal block protection plate 16 is located between each pulley 21 and the magnetic member fixing plate 312, and its left and right ends are respectively fixed on the left end plate 13 and the right end plate 14. The two annular structures of the centrifugal block protection plate 16 surround each centrifugal speed control structure 32 to prevent the centrifugal block 321 from detaching from the pulley 21 during rotation and avoid affecting the safety of tourists' rides.

[0043] Next, the hook plate assembly 4 will be introduced. As Figure 1 、 Figure 3 and Figure 9As shown in the figure, the hook plate assembly 4 includes a hook plate 41, a third fixed shaft 43, and a top sleeve 44. The hook plate 41 is a triangular plate with its tip facing downward. The left and right ends of the hook plate 41 are provided with hooks 42 for cooperation in rescue. The third fixed shaft 43 extends in the front-rear direction and is located above the second fixed shaft 53. Its front and rear ends are respectively fixed to the front side plate 11 and the rear side plate 12. The hook plate 41 is located between the two pulleys 21 and between the two centrifugal protection plates. The middle part of it is sleeved on the second fixed shaft 53 and the third fixed shaft 43. The top sleeve 44 is an annular sleeve, and the number of it is two. The two top sleeves 44 are both sleeved on the third fixed shaft 43 and are respectively located between the hook plate 41 and the two centrifugal block protection plates 16, and are used to fix the hook plate 41 in the front-rear direction.

[0044] A summary of the working principle of a magnetic damping speed regulation pulley is as follows: Since each centrifugal block 321 is hinged to the front and rear sides of the pulley 21, when the pulley 21 rotates, it will drive the centrifugal block 321 to rotate synchronously with the pulley 21. The centrifugal block 321 will be subject to centrifugal force while rotating with the pulley 21, and the magnitude of the centrifugal force is proportional to the rotational speed of the pulley 21.

[0045] In non-sliding working conditions, the pulley is in a stationary state or a low-speed moving state, and the centrifugal blocks 321 on the pulley 21 are in a stationary state or rotate synchronously with the pulley 21. In this state, since the centrifugal force received by the centrifugal blocks 321 cannot overcome the pulling force of the tension spring 328, the centrifugal blocks 321 will maintain a contracted state close to the wheel shaft 23. Furthermore, no magnetic damping can be generated between the centrifugal blocks 321 and the magnets 311, and no resistance will be generated to the movement of the pulley.

[0046] In sliding working conditions, the pulley is in a moving state from low speed to high speed. At this time, the centrifugal force of the centrifugal blocks 321 on the pulley 21 will gradually overcome the pulling force of the spring on the centrifugal blocks 321. Then, the centrifugal blocks 321 will gradually expand under the action of the centrifugal force. And as the sliding speed of the pulley increases, the rotational speed and the expansion radius of the centrifugal blocks 321 both gradually increase, so that the magnetic damping between the centrifugal blocks 321 and the magnets 311 will increase accordingly, and a greater braking force can be provided for the pulley.

[0047] For zip lines with different inclinations, the staff can adjust the maximum sliding speed of the pulley by adjusting the installation quantity of the magnets 311 on the magnetic part fixing plate 312, which has strong applicability.

[0048] Embodiment 2 of a magnetic damping speed regulation pulley provided by the present invention: The main difference from Embodiment 1 is: In Embodiment 1, the magnetic part is a magnet.

[0049] In this embodiment, the magnetic member is an electromagnet, and a power control structure is provided on the pulley corresponding to the electromagnet.

[0050] Embodiment 3 of a magnetic damping speed regulation pulley provided by the present invention: The main difference between it and Embodiment 1 lies in: In Embodiment 1, the elastic member is a tension spring.

[0051] In this embodiment, the elastic member is a torsion spring or elastic rubber coaxially arranged with the pulley.

[0052] Embodiment 4 of a magnetic damping speed regulation pulley provided by the present invention: The main difference between it and Embodiment 1 lies in: In Embodiment 1, the tension spring is installed by setting a fixed block on the centrifugal block fixing plate, and in addition, a limiting groove is provided on the centrifugal block fixing plate to limit the expansion radius of the centrifugal block.

[0053] In this embodiment, the fixed block is arranged on the pulley, and an annular baffle for limiting the expansion radius of the centrifugal block is arranged on the side of the pulley.

[0054] According to the above description of this specification, those skilled in the art can also understand the following terms used, such as the terms indicating orientation or positional relationship, such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0055] In addition, in the description of this specification, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise specifically and clearly defined.

Claims

1. A magnetic damping speed regulation pulley, comprising a frame, a pulley set mounted on the frame, and a speed regulation assembly. The pulley set includes a pulley that rotates in contact with a steel wire rope. It is characterized in that the speed regulation assembly includes a magnetic source structure and a centrifugal speed regulation structure. The magnetic source structure includes a magnetic member fixedly mounted on the frame and arranged along the outer circumference of the pulley. The centrifugal speed regulation structure includes a plurality of centrifugal blocks evenly distributed around the pulley center and an elastic member. The centrifugal blocks are hinged to the pulley and have a contracted state in which they are close to the pulley center under the action of the elastic member and an expanded state in which they are expanded under the action of centrifugal force when the pulley rotates. The centrifugal blocks in the contracted state are used to enable the pulley to move freely on the steel wire rope, and the centrifugal blocks in the expanded state are used to cooperate with the magnetic member to generate magnetic damping.

2. The magnetic damping speed regulating pulley according to claim 1, characterized in that, The magnetic source structure further includes a plurality of magnetic member fixing plates located on the front and rear sides of the pulley. The magnetic member fixing plates are annular plates, and the magnetic member fixing plates are provided with a plurality of mounting holes for detachably mounting the magnetic members.

3. The magnetic damping speed regulation pulley according to claim 2, wherein The centrifugal blocks are evenly arranged around the pulley axis. The outer edge of the centrifugal block is a convex arc, and its inner edge is a concave arc. When each centrifugal block is in the contracted state, they form an annular structure around the pulley axis, and the outer diameter of the annular structure is smaller than the inner diameter of the magnetic member fixing plate.

4. The magnetic damping speed regulation pulley according to claim 2, characterized in that, The magnetic member is a cylindrical magnet, and the number of magnets is multiple, which is used to cooperate with the centrifugal blocks to generate magnetic damping and adjust the sliding speed of the pulley by adjusting the number of magnets.

5. A magnetic damping speed regulation pulley according to claim 1, characterized in that, The centrifugal speed regulation structure further includes a centrifugal block fixing plate and a limit post. The centrifugal block fixing plate is fixedly mounted on the front and rear sides of the pulley, and the centrifugal blocks are located between the pulley and the centrifugal block fixing plate; the centrifugal block fixing plate is provided with an arc-shaped limit groove corresponding to each centrifugal block, and the limit post is fixedly mounted on each centrifugal block, and the limit post is movably assembled in the limit groove to limit the expansion radius of the centrifugal block.

6. The magnetic damping speed regulating pulley according to claim 5, characterized in that, The centrifugal block fixing plate is provided with a fixing block corresponding to each limit post. The elastic member is a tension spring, and the two ends of the tension spring are respectively connected to the limit post and the corresponding fixing block to provide a pulling force for the centrifugal block to approach the pulley center.

7. A magnetic damping speed-regulating pulley according to claim 1, characterized in that, The upper end of the frame is provided with a hook plate, and the hook plate is provided with a hook for cooperating with the rescue operation of the pulley.

8. A magnetic damping speed regulation pulley according to claim 1, characterized in that, The frame includes a front side plate, a rear side plate, a left end plate, a right end plate, end covers, and a hanging plate. The left end plate and the right end plate are located between the front side plate and the rear side plate and are fixedly connected to the front side plate and the rear side plate. The number of end covers is multiple, and the end covers are located at the front and rear ends of each wheel axle and are respectively fixed on the front side plate and the rear side plate for carrying the pulley. The hanging plate is fixed at the lower ends of the front side plate and the rear side plate for hanging personnel / objects.

9. The magnetic damping speed regulation pulley according to claim 8, characterized in that, The pulley set further includes a wheel axle and bearings. The pulley is sleeved on the wheel axle, the number of bearings is multiple, the bearings are assembled on each end cover, and the front and rear ends of the wheel axle are assembled on the bearings.

10. A magnetic damping speed regulation pulley according to claim 1, characterized in that, The material of the centrifugal block is copper to improve the heat dissipation performance of the centrifugal block while ensuring the braking force.

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