Wire wheel structure with shaft self-locking function

Abstract

The wire wheel structure is arranged on an installation frame and comprises a winding wheel used for being connected with a lifting rope, a rotating shaft and an adjusting piece, the rotating shaft can rotate relative to the installation frame, the winding wheel is arranged outside the rotating shaft in a sleeved mode, the winding wheel can rotate relative to the rotating shaft and the installation frame, and a coil spring is arranged between the rotating shaft and the winding wheel. A one-way transmission mechanism used for transmitting power in a one-way mode is arranged between the adjusting piece and the rotating shaft, and when the adjusting piece rotates under the action of external force, the one-way transmission mechanism receives rotating power input by the adjusting piece and drives the rotating shaft to rotate so as to change the elastic force, acting on the winding wheel, of the coil spring; the one-way transmission mechanism limits the rotating shaft to be pulled by the coil spring to rotate, the balance mode of the structure can enable the operation tools which are connected with the lifting rope and have different weights to be kept at the same height position by rotating the adjusting piece, the hung operation tools can be controlled to ascend or descend by rotating the adjusting piece, and therefore the heights of the operation tools are flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to a rope reel structure, and more particularly to a self-locking reel structure with a shaft used in aerial work equipment. Background Technology

[0002] In daily production and life, various handheld tools are frequently used, such as chainsaws, electric drills, cutting machines, impact hammers, high-pole shears, and high-pole saws. Because these power tools are heavy, the operator holds them with both hands throughout the process and performs the corresponding actions, which puts a great strain on the operator's body. Especially for high-level operations, the operator needs to lift the tools with both hands for a long time to operate them, such as pruning high branches with high-pole shears or high-pole saws.

[0003] To address the aforementioned issues, balancing supports have emerged in the market to assist in operations. For example, patent CN118579678A discloses a backpack-type lifting device, which includes a support assembly, a backpack assembly, a lifting assembly, and a resetting assembly. The support assembly includes a bracket and a boom. The lifting assembly includes a winding reel, a traction cable, and a pulley block. The winding reel is fixedly connected to a first rotating shaft, which is rotatably connected to the bracket. The resetting assembly includes a first fixed seat, a coil spring, and a second fixed seat. The first fixed seat is fixedly connected to the first rotating shaft, and the two ends of the coil spring are respectively connected to the first fixed seat and the second fixed seat. The second fixed seat is fixedly connected to the bracket. The coil spring is used to drive the first rotating shaft to rotate and reset. The fixed end of the traction cable is connected to the winding wheel, which can wind or release the traction cable. The pulley block is rotatably connected to the boom. The free end of the traction cable passes through the pulley block, which is used to change the layout and shape of the traction cable. The free end of the traction cable can be connected to the object to be lifted. The force of the winding wheel driven by the coil spring is balanced with the weight of the object lifted by the free end of the traction cable, so that the lifted object is kept at a certain height to assist the operator in the operation.

[0004] The problem with the auxiliary supports disclosed in existing patents is that the operator cannot control the force of the coil spring driving the winding wheel. When the object to be lifted is connected to the free end of the traction cable and continues to be suspended, a certain length of traction cable needs to be wound or released by the winding wheel itself in order to change the winding force of the coil spring driving the winding wheel to be the same as the weight of the suspended object. During this process, the height of the suspended object cannot be controlled. Heavier objects may be hung lower, and lighter objects may be hung higher. It is impossible to maintain a suitable height for operation according to the operator's needs. Utility Model Content

[0005] Since the operator cannot control the force of the coil spring driving the winding wheel, when the object to be lifted is connected to the free end of the traction cable and continues to be suspended, a certain length of traction cable needs to be wound or released by the winding wheel itself in order to change the winding force of the coil spring driving the winding wheel to be the same as the weight of the suspended object. The height of the suspended object cannot be controlled during this process. This utility model provides a self-locking spool structure with a shaft.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a self-locking spool structure with a shaft is set on a mounting frame, including a winding spool for connecting the hoisting rope, a rotating shaft, and an adjusting member for rotation adjustment. The rotating shaft is set on the mounting frame and can rotate relative to the mounting frame. The winding spool is sleeved outside the rotating shaft and can rotate relative to the rotating shaft and the mounting frame. A coil spring is provided between the rotating shaft and the winding spool. One end of the coil spring is connected to the winding spool, and the other end of the coil spring is connected to the rotating shaft. The coil spring is used to drive the winding spool to rotate to wind the hoisting rope. A one-way transmission mechanism for unidirectional power transmission is provided between the adjusting member and the rotating shaft. The adjusting member is connected to the input end of the one-way transmission mechanism, and the output end of the one-way transmission mechanism is connected to the rotating shaft. When the adjusting member is rotated by an external force, the one-way transmission mechanism receives the rotational power input by the adjusting member and drives the rotating shaft to rotate, thereby changing the elastic force of the coil spring acting on the winding spool. When the adjusting member loses force, the one-way transmission mechanism restricts the rotating shaft from being pulled by the coil spring to rotate.

[0007] A further preferred embodiment of this utility model is as follows: the unidirectional transmission mechanism includes a shaft lock assembly, which includes a shaft lock ring, rollers, and a planetary carrier. The planetary carrier is connected to an adjusting member. At least two actuating pawls are provided on one side of the planetary carrier. A roller is provided between two adjacent actuating pawls. The rollers and actuating pawls are housed within the shaft lock ring. One end of the rotating shaft passes through the shaft lock ring and is connected to the planetary carrier. The planetary carrier is provided with a connecting hole for the end of the rotating shaft to be inserted and connected. The planetary carrier and the rotating shaft are restricted from rotating relative to each other. The rollers and actuating pawls surround the outside of the rotating shaft. The outer wall of the rotating shaft is provided with a straight edge corresponding to the roller. The roller is located between the straight edge and the inner wall of the shaft lock ring. When the adjusting member is rotated by an external force, the planetary carrier receives the power input by the adjusting member and drives the rotating shaft to rotate. At the same time, the actuating pawls push the rollers to rotate. When the adjusting member loses force, the rollers abut against the straight edge to restrict the coil spring from driving the rotating shaft to rotate.

[0008] A further preferred embodiment of this utility model is as follows: the unidirectional transmission mechanism includes at least one stage of planetary gear set, the input end of the planetary gear set is connected to an adjusting component, and the output end of the planetary gear set is connected to a planet carrier.

[0009] A further preferred technical solution of this utility model is as follows: the planetary gear set is a single-stage transmission planetary gear set, which includes a sun gear, planetary gears and an internal gear ring. The sun gear is connected to an adjusting member and is driven to rotate by the adjusting member. The internal gear ring contains multiple planetary gears. The surface of the planet carrier away from the pawl is provided with a gear shaft corresponding to the planetary gear. The gear shaft is inserted into the internal gear ring and connected to the corresponding planetary gear. The sun gear is located in the middle of the multiple planetary gears. The inner side of the planetary gear meshes with the sun gear, and the outer side of the planetary gear meshes with the internal gear ring.

[0010] A further preferred embodiment of this utility model is as follows: the mounting frame includes a housing, the housing has a cavity for accommodating the winding wheel, the shaft and the coil spring, the outer wall of the housing has a mounting groove, a one-way transmission mechanism is installed in the mounting groove, a cover plate is installed at the opening of the mounting groove, an adjustment component located outside the housing passes through the cover plate and is connected to the input end of the one-way transmission mechanism, the housing has a first through hole connecting the cavity and the mounting groove, and the shaft passes through the first through hole and is connected to the output end of the one-way transmission mechanism.

[0011] A further preferred embodiment of this utility model is as follows: the adjusting component includes an adjusting rod and a knob. One end of the adjusting rod is fixed to the knob outside the housing, and the other end of the adjusting rod passes through the cover plate and is inserted into the mounting groove. The cover plate has a through hole for the adjusting rod to pass through, and the insertion end of the adjusting rod has a limiting part that limits it to the inside of the cover plate. The sun gear includes a sun gear and a sun disk. The sun gear is fixed on the end face of one end of the sun disk and meshes with the inner side of the planetary gear. A connecting post is provided on the end face of the other end of the sun disk. The adjusting rod has a corresponding groove for the connecting post. The connecting post is inserted into the groove so that the adjusting rod can drive the sun disk and the sun gear to rotate. The sun disk is limited between the adjusting rod and the planetary gear.

[0012] A further preferred embodiment of this utility model is as follows: the mounting groove includes four levels of circular grooves with different inner diameters. The inner diameter of the circular grooves gradually decreases from one side to the other. The first level circular groove located on the outer side has the largest diameter. There is a step between adjacent circular grooves. The shaft lock ring is placed in the fourth level circular groove. The planetary carrier is placed in the third level circular groove and blocks the outside of the shaft lock ring to limit its movement. The internal gear ring is placed in the second level circular groove and abuts against the step between the second and third level circular grooves. The cover plate is accommodated in the first level circular groove and presses against the outside of the internal gear ring. The cover plate is connected to the housing by screws.

[0013] A further preferred technical solution of this utility model is as follows: a plurality of first locking teeth are provided on the inner side of the internal gear ring, and a plurality of second locking teeth are provided on the step between the second-level circular groove and the third-level circular groove. The first locking teeth and the second locking teeth are misaligned and engaged to restrict the rotation of the internal gear ring relative to the shell.

[0014] A further preferred technical solution of this utility model is as follows: one side of the shaft lock ring is closed with a side plate, and the side plate and the internal space of the shaft lock ring are combined to form a receiving groove for accommodating rollers and actuating claws. A second through hole is provided in the center of the side plate for the end of the rotating shaft to pass through. A locking block is provided on the side wall of the shaft lock ring, and a corresponding locking groove is provided on the inner wall of the fourth-level circular groove. The locking block is locked in the locking groove to restrict the rotation of the shaft lock ring relative to the housing.

[0015] A further preferred technical solution of this utility model is as follows: the winding wheel includes a wheel body and two side covers. The wheel body has spring grooves on both sides, and a spring is provided in the spring groove. The two side covers are respectively installed on both sides of the wheel body and cover the spring grooves. The two side covers and the outer periphery of the wheel body are combined to form a rope groove for the hanging rope to be wound. The rotating shaft passes through the wheel body and the two side covers. The rotating shaft is rotatably connected to the two side covers by bearings. The end of the rotating shaft that extends out of the side cover is rotatably connected to the housing by bearings.

[0016] Compared with the prior art, the advantages of this utility model are that the rotating shaft and the take-up wheel connected to both ends of the coil spring are both rotatable, and a one-way transmission mechanism is set between the rotating shaft and the adjusting component. When the adjusting component is rotated by an external force, the one-way transmission mechanism receives the rotational power input by the adjusting component and drives the rotating shaft to rotate, thereby changing the elastic force of the coil spring on the take-up wheel. When the adjusting component loses its force, the one-way transmission mechanism restricts the rotating shaft from being pulled by the coil spring to rotate. When the working tool is connected to the hoisting rope, the elastic force of the coil spring on the take-up wheel can be changed by rotating the adjusting component, so that the weight of the working tool connected to the free end of the hoisting rope and the elastic force of the coil spring on the take-up wheel can be balanced. This balancing method can keep working tools of different weights connected to the hoisting rope at the same height position by rotating the adjusting component, and can also control the raising or lowering of the suspended working tool by rotating the adjusting component, thereby flexibly adjusting the height of the working tool and making it convenient for users to work at different heights. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of a reel structure applied to a balance support.

[0019] Figure 2 Diagram showing the usage status of the balance bracket;

[0020] Figure 3 A half-sectional schematic diagram of the balancing support;

[0021] Figure 4 This is a schematic diagram of the fixed frame structure;

[0022] Figure 5 This is a schematic diagram of the shell structure;

[0023] Figure 6 Exploded views of the various components of the shell section;

[0024] Figure 7 Exploded view of the winding wheel, shaft, and coil spring;

[0025] Figure 8 This is a schematic diagram of the right half of the shell;

[0026] Figure 9 This is a split view of the adjustment component;

[0027] Figure 10 This is a schematic diagram of the adjusting rod.

[0028] Figure 11 Exploded view of the rotating shaft and one-way transmission mechanism;

[0029] Figure 12 This is a cross-sectional schematic diagram showing the engagement between the shaft lock assembly and the rotating shaft.

[0030] Figure 13 This is a cross-sectional schematic diagram of a planetary gear set;

[0031] Figure 14 This is a schematic diagram of the sun gear structure;

[0032] Figure 15 This is a schematic diagram of the planetary carrier structure;

[0033] Figure 16 This is a schematic diagram of the internal gear ring.

[0034] Figure 17 This is a cross-sectional view of the shell section;

[0035] Figure 18 for Figure 17 A magnified view of part A.

[0036] In the diagram: 1. Mounting frame; 2. Boom; 3. Fixing frame; 4. Back frame; 5. Working tools; 6. Lifting rope; 7. Support rod; 8. Housing; 9. Rewinding reel; 10. Shaft; 11. Adjusting component; 12. Left half-shell; 13. Right half-shell; 14. Rope groove; 15. Through hole; 16. Mounting slot; 17. One-way transmission mechanism; 18. Cover plate; 19. Bearing; 20. Side cover; 21. Coil spring; 22. Wheel body; 23. Coil spring groove; 24. First through hole; 25. Fourth-stage circular groove; 26. Slot; 27. Third-stage circular groove; 28. Second-stage circular groove. 29. Groove; 30. Second locking tooth; 31. First-stage circular groove; 32. Knob; 33. Adjusting rod; 34. Connecting groove; 35. Connecting block; 36. Limiting part; 37. Column groove; 38. Straight edge part; 39. Shaft lock ring; 40. Locking block; 41. Second through hole; 42. Roller; 43. Planetary carrier; 44. Planetary gear; 45. Internal gear ring; 46. Sun gear; 47. Actuating pawl; 48. Gear shaft; 49. Sun gear; 50. Sun disk; 51. Connecting column; 52. Connecting hole; 53. First locking tooth; 54. Receiving cavity; 55. Side plate. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0038] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0039] Figures 1-18 As shown, the balance support includes a mounting frame 1, a reel structure, a carrying device, and a suspension rope 6.

[0040] Figures 1-3 As shown, the carrying device includes a back frame 4 fixed on the mounting frame 1. The back frame 4 is used for the operator to carry the balance support. The back frame 4 has a carrying strap for carrying people.

[0041] The lifting rope 6 is installed on the mounting frame 1. Preferably, the lifting rope 66 is a steel wire rope, which has high strength.

[0042] Figures 9-18As shown, the spool structure is mounted on the mounting frame 1. The spool structure includes a take-up reel 9 for connecting the lifting rope 6, a rotating shaft 10, and an adjusting member 11 for rotation adjustment. The rotating shaft 10 is mounted on the mounting frame 1 and rotates relative to it. The take-up reel 9 is sleeved around the rotating shaft 10 and can rotate relative to both the rotating shaft 10 and the mounting frame 1. A coil spring 21 is provided between the rotating shaft 10 and the take-up reel 9. One end of the coil spring 21 is connected to the take-up reel 9, and the other end is connected to the rotating shaft 10. The fixed end of the lifting rope 6 is connected to the take-up reel 9, and the free end of the lifting rope 6 is used for... The connecting tool 5 and the winding reel 9 rotate to wind or release the hoisting rope 6. The coil spring 21 drives the winding reel 9 to rotate to wind the hoisting rope 6. A one-way transmission mechanism 17 for unidirectional power transmission is provided between the adjusting member 11 and the rotating shaft 10. When the adjusting member 11 is rotated by an external force, the one-way transmission mechanism 17 receives the rotational power input by the adjusting member 11 and drives the rotating shaft 10 to rotate, thereby changing the elastic force of the coil spring 21 acting on the winding reel 9. When the adjusting member 11 loses its force, the one-way transmission mechanism 17 restricts the rotating shaft 10 from being pulled by the coil spring 21. The one-way transmission mechanism 17 ensures that power can only be transmitted in one direction, and the rotating shaft 10 at the output end can only be driven by the adjusting member 11 at the input end. When the adjusting member 11 is not rotating, the one-way transmission mechanism 17 locks the rotation of the rotating shaft 10.

[0043] When the work tool 5 is suspended by connecting it to the free end of the suspension rope 6, the elastic force of the coil spring 21 acting on the take-up reel 9 can be changed by rotating the adjusting component 11, so that the weight of the work tool 5 connected to the free end of the suspension rope 6 and the elastic force of the coil spring 21 acting on the take-up reel 9 can be balanced. This balancing method can keep work tools 5 of different weights connected to the suspension rope 6 at the same height position by rotating the adjusting component 11, and can also control the raising or lowering of the suspended work tool 5 by rotating the adjusting component 11, so as to flexibly adjust the height of the work tool 5 and facilitate the user to work at different height positions.

[0044] By using a balanced support and back suspension method, the weight of the work tool 5 is shifted from being borne by the operator's hands to being borne by the operator's entire body, reducing labor intensity. Furthermore, the operator can carry it at any time by carrying it on their back, making it more flexible and applicable in various scenarios.

[0045] Operating principle: When the free end of the hoisting rope 6 is connected to the working tool 5, the hoisting rope 6 is released from the take-up reel 9 under the weight of the working tool 5, causing the take-up reel 9 to rotate clockwise. As the take-up reel 9 rotates clockwise, the spring 21 gradually increases its elastic force on the take-up reel 9 until the elastic force of the spring 21 on the take-up reel 9 equals the weight of the working tool 5, and the suspended working tool 5 stops descending. When it is necessary to raise the working tool 5, the rotating shaft 10 is reversed by rotating the adjusting component 11. As the rotating shaft 10 reverses, the spring 21 gradually increases its elastic force on the take-up reel 9, making the elastic force of the spring 21 on the take-up reel 9 greater than the weight of the working tool 5. This causes the spring 21 to pull the take-up reel 9 to rotate and wind the hoisting rope 6. During the reversal of the take-up reel 9, the height of the working tool 5 gradually increases, and the spring 21, along with the rotation of the take-up reel 9... Reversing the rotation gradually reduces the elastic force acting on the take-up reel 9 until the elastic force of the coil spring 21 acting on the take-up reel 9 is equal to the weight of the work tool 5, at which point the work tool 5 stops rising. When it is necessary to lower the work tool 5, the rotating shaft 10 is controlled to rotate forward by rotating the adjusting component 11. As the shaft 10 rotates forward, the elastic force acting on the take-up reel 9 gradually decreases, so that the elastic force acting on the take-up reel 9 by the coil spring 21 is less than the weight of the work tool 5. The hoisting rope 6 is released from the take-up reel 9 under the weight of the work tool 5 and drives the take-up reel 9 to rotate forward. During the forward rotation of the take-up reel 9, the height of the work tool 5 gradually decreases. At the same time, the elastic force acting on the take-up reel 9 by the coil spring 21 gradually increases as the take-up reel 9 rotates forward, until the elastic force acting on the take-up reel 9 by the coil spring 21 is equal to the weight of the work tool 5, at which point the work tool 5 stops falling.

[0046] Figure 12 As shown, the one-way transmission mechanism 17 includes a shaft lock assembly, which includes a shaft lock ring 38, rollers 41, and a planetary carrier 42. The planetary carrier 42 is connected to an adjusting member 11. At least two actuating pawls 46 are provided on one side of the planetary carrier 42, and rollers 41 are provided between two adjacent actuating pawls 46. The rollers 41 and actuating pawls 46 are housed within the shaft lock ring 38. One end of the rotating shaft 10 passes through the shaft lock ring 38 and is connected to the planetary carrier 42. The planetary carrier 42 is provided with a connecting hole 51 for the end of the rotating shaft 10 to be inserted and connected. The planetary carrier 42 and the rotating shaft 10 are connected. The relative rotation is limited. The roller 41 and the actuating pawl 46 surround the outer side of the rotating shaft 10. The side wall of the rotating shaft 10 is provided with a straight edge 37 corresponding to the roller 41. The roller 41 is located between the straight edge 37 and the inner wall of the shaft lock ring 38. When the adjusting member 11 is rotated by an external force, the planetary carrier 42 receives the power input by the adjusting member 11 and drives the rotating shaft 10 to rotate. At the same time, the actuating pawl 46 pushes the roller 41 to rotate. When the adjusting member 11 loses force, the roller 41 abuts against the straight edge 37 to limit the coil spring 21 from driving the rotating shaft 10 to rotate, thereby achieving the shaft lock effect.

[0047] Preferably, there are three actuating claws 46 and three rollers 41. The three rollers 41 are respectively located between two adjacent actuating claws 46. The rotating shaft 10 has the same number of straight edge portions 37 as the rollers 41. The actuating claws 46 are arc-shaped, and the outer edge shape of the actuating claws 46 is adapted to the inner wall shape of the shaft lock ring 38.

[0048] Preferably, the side wall at the end of the rotating shaft 10 is provided with at least one cross-section, and the inner wall of the connecting hole 51 is provided with a corresponding anti-rotation surface. The anti-rotation surface cooperates with the cross-section to restrict the relative rotation between the rotating shaft 10 and the planet carrier 42, so that the planet carrier 42 can drive the rotating shaft 10 to rotate.

[0049] Figure 13 As shown, the one-way transmission mechanism 17 includes at least one stage of planetary gear set. The input end of the planetary gear set is connected to the adjusting member 11, and the output end of the planetary gear set is connected to the planet carrier 42. The speed reduction is achieved through the planetary gear set. When the adjusting member 11 is rotated, the rotation stroke of the shaft 10 is small, thereby achieving higher accuracy in adjusting the height of the working tool 5.

[0050] Preferably, the planetary gear set is a single-stage transmission planetary gear set, comprising a sun gear 45, planetary gears 43, and an internal gear ring 44. The sun gear 45 is connected to and driven to rotate by an adjusting member 11. The internal gear ring 44 contains multiple planetary gears 43. A gear shaft 47 corresponding to a planetary gear 43 is provided on the surface of the planet carrier 42 away from the actuating pawl 46. The gear shaft 47 is inserted into the internal gear ring 44 and connected to the corresponding planetary gear 43. The planetary gears 43 and gear shafts 47 can rotate relative to each other. The sun gear 45 is positioned in the middle of the multiple planetary gears 43. The inner side of each planetary gear 43 meshes with the sun gear 45, and the outer side of each planetary gear 43 meshes with the internal gear ring 44. There are five planetary gears 43, and the planet carrier 42 has the same number of gear shafts 47 as the planetary gears 43.

[0051] Mounting frame 1 includes a fixed frame 3 and a boom 2. The fixed frame 3 includes a support rod 7 and a housing 8. The housing 8 is fixed to the lower end of the support rod 7, and the boom 2 is connected to the upper end of the support rod 7. The housing 8 has a receiving cavity 53 for accommodating a winding wheel 9, a rotating shaft 10, and a coil spring 21. The rotating shaft 10 and the winding wheel 9 are rotatably arranged in the receiving cavity 53. The lifting rope 6 is laid along the length of the support rod 7 and the boom 2. The free end of the lifting rope 6 is hung from the end of the boom 2 away from the support rod 7 for connecting the working tool 5.

[0052] Figure 6 , Figure 8As shown, the aforementioned one-way transmission mechanism 17 is mounted on the housing 8. The outer wall of the housing 8 is provided with a mounting groove 16. The one-way transmission mechanism 17 is installed in the mounting groove 16. A cover plate 18 is installed at the opening of the mounting groove 16. An adjusting member 11 located outside the housing 8 passes through the cover plate 18 and is connected to the input end of the one-way transmission mechanism 17. The housing 8 is provided with a first through hole 24 that connects the receiving cavity 53 and the mounting groove 16. The rotating shaft 10 passes through the first through hole 24 and is connected to the output end of the one-way transmission mechanism 17.

[0053] The adjusting component 11 includes an adjusting rod 32 and a knob 31. One end of the adjusting rod 32 is fixed to the knob 31 outside the housing 8. The other end of the adjusting rod 32 passes through the cover plate 18 and is inserted into the mounting groove 16. The cover plate 18 has a through hole 15 for the adjusting rod 32 to pass through. The insertion end of the adjusting rod 32 has a limiting part 35 that limits it to the inside of the cover plate 18. The sun gear 45 includes a sun gear 48 and a sun disk 49. The sun gear 48 is fixed on the end face of one end of the sun disk 49 and meshes with the inside of the planetary gear 43. The end face of the other end of the sun disk 49 has a connecting post 50. The adjusting rod 32 has a groove 36 corresponding to the connecting post 50. The connecting post 50 is inserted into the groove 36 so that the adjusting rod 32 can drive the sun disk 49 and the sun gear 48 to rotate. The sun disk 49 is limited between the adjusting rod 32 and the planetary gear 43.

[0054] Preferably, the diameter of the limiting part 35 is larger than the diameter of the adjusting rod 32, and a first step is formed between the limiting part 35 and the adjusting rod 32. The diameter of the limiting part 35 is larger than the diameter of the through hole 15. The first step is stuck on the inner side of the cover plate 18 to limit the adjusting rod 32 from disengaging outward.

[0055] The end face of the solar disk 49 is provided with three connecting posts 50, and the adjusting rod 32 is provided with three grooves 36 corresponding to the three connecting posts 50 respectively.

[0056] The mounting groove 16 includes four levels of circular grooves with different inner diameters. The inner diameter of the circular grooves gradually decreases from one side to the other. The first level circular groove 30 located on the outer side has the largest diameter. There is a second step between adjacent circular grooves. The shaft lock ring 38 is placed in the fourth level circular groove 25. The planetary carrier 42 is placed in the third level circular groove 27 and blocks the outside of the shaft lock ring 38 to limit the shaft lock ring 38. The internal gear ring 44 is placed in the second level circular groove 28 and abuts against the second step between the second level circular groove 28 and the third level circular groove 27. The cover plate 18 is accommodated in the first level circular groove 30 and presses against the outside of the internal gear ring 44. The cover plate 18 is connected to the housing 8 by screws.

[0057] The inner side of the internal gear ring 44 is provided with a number of first locking teeth 52, and the second step between the second-level circular groove 28 and the third-level circular groove 27 is provided with a number of second locking teeth 29. The first locking teeth 52 and the second locking teeth 29 are misaligned and engaged to restrict the rotation of the internal gear ring 44 relative to the housing 8.

[0058] One side of the shaft lock ring 38 is closed with a side plate 54. The side plate 54 and the internal space of the shaft lock ring 38 are combined to form a receiving groove for accommodating the roller 41 and the actuating claw 46. The side plate 54 has a second through hole 40 in the center for the end of the rotating shaft 10 to pass through. The side wall of the shaft lock ring 38 is provided with a locking block 39. The inner wall of the fourth-level circular groove 25 is provided with a slot 26 with a corresponding locking block 39. The locking block 39 is locked in the slot 26 to restrict the shaft lock ring 38 from rotating relative to the housing 8.

[0059] The end of the adjusting rod 32 is provided with four mating blocks 34, and the knob 31 is provided with mating grooves 33 corresponding to the mating blocks 34. The number of mating grooves 33 is the same as that of the mating blocks 34. The adjusting rod 32 is inserted into the four mating grooves 33 on the knob 31 through the four mating blocks 34 respectively, and then the knob 31 and the adjusting rod 32 are connected by screws.

[0060] The outer shaft of knob 31 is provided with anti-slip texture.

[0061] Figure 7 As shown, the winding reel 9 includes a reel body 22 and two side covers 20. The reel body 22 has spring grooves 23 on both sides, each containing a spring 21. The two side covers 20 are respectively mounted on both sides of the reel body 22 and cover the spring grooves 23. The two side covers 20, together with the outer circumference of the reel body 22, form a rope groove 14 for the lifting rope 6 to be wound. A rotating shaft 10 passes through the reel body 22 and the two side covers 20. The rotating shaft 10 is rotatably connected to the side covers 20 via bearings 19. The end of the rotating shaft 10 extending out of the side covers 20 is rotatably connected to the housing 8 via bearings 19. The side covers 20 are connected to the reel body 22 by screws.

[0062] The housing 8 includes a left half-shell 12 and a right half-shell 13. The left half-shell 12 and the right half-shell 13 are connected by screws to form an internal receiving cavity 53.

[0063] This patented structure is not limited to the application of the aforementioned balance support for high-altitude operations, but can also be applied to other equipment.

[0064] The above describes the self-locking reel structure with shaft provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from its principle, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A line wheel structure with axle self-locking, provided on a mounting frame, characterized in that, The application relates to a winding wheel for connecting a lifting rope, a rotating shaft arranged on a mounting frame and capable of rotating relative to the mounting frame, a winding wheel sleeved on the outside of the rotating shaft and capable of rotating relative to the rotating shaft and the mounting frame, a coil spring arranged between the rotating shaft and the winding wheel, one end of the coil spring being connected with the winding wheel and the other end of the coil spring being connected with the rotating shaft, the coil spring being used for driving the winding wheel to rotate to wind the lifting rope, an adjusting member arranged between the rotating shaft and the adjusting member and used for one-way transmission of power, the adjusting member being connected with the input end of the one-way transmission mechanism, the output end of the one-way transmission mechanism being connected with the rotating shaft, when the adjusting member is rotated by external force, the one-way transmission mechanism receives the rotating power input by the adjusting member and drives the rotating shaft to rotate to change the elastic force of the coil spring acting on the winding wheel, and when the adjusting member loses the external force, the one-way transmission mechanism limits the rotating shaft from being pulled to rotate by the coil spring.

2. The axle-locked line wheel structure according to claim 1, wherein The one-way transmission mechanism comprises a shaft locking assembly, the shaft locking assembly comprising a shaft locking ring, a roller and a planet carrier, the planet carrier being connected with the adjusting member, at least two pawls being arranged on one side of the planet carrier, the adjacent two pawls being provided with the roller, the roller and the pawls being accommodated in the shaft locking ring, one end of the rotating shaft penetrating through the shaft locking ring and being connected with the planet carrier, the planet carrier being provided with a connecting hole for the end of the rotating shaft to be inserted and connected, the planet carrier being limited in rotation relative to the rotating shaft, the roller and the pawls being arranged on the outside of the rotating shaft, the outer wall of the rotating shaft being provided with a straight edge corresponding to the roller, the roller being arranged between the straight edge and the inner wall of the shaft locking ring, when the adjusting member is rotated by external force, the planet carrier receives the power input by the adjusting member and drives the rotating shaft to rotate, meanwhile, the pawls push the roller to rotate, when the adjusting member loses the external force, the roller is limited by the straight edge to prevent the coil spring from driving the rotating shaft to rotate.

3. The axle-locked line wheel structure according to claim 2, wherein The one-way transmission mechanism comprises a planetary gear set of at least one level of transmission, the input end of the planetary gear set being connected with the adjusting member, and the output end of the planetary gear set being connected with the planet carrier.

4. The axle-locked line wheel structure according to claim 3, wherein The planetary gear set is a planetary gear set of one level of transmission, the planetary gear set comprising a sun gear, a planet gear and an inner ring gear, the sun gear being connected with the adjusting member and being driven to rotate by the adjusting member, the inner ring gear being internally provided with a plurality of planet gears, the surface of the planet carrier away from the pawls being provided with gear shafts corresponding to the planet gears, the gear shafts being inserted into the inner ring gear and being connected with the corresponding planet gears, the sun gear being arranged in the middle of the plurality of planet gears, the inner side of the planet gear being engaged with the sun gear, and the outer side of the planet gear being engaged with the inner ring gear.

5. The axle-locked line wheel structure according to claim 4, wherein The mounting frame comprises a shell, the shell being internally provided with a containing cavity for containing the winding wheel, the rotating shaft and the coil spring, the outer wall of the shell being provided with a mounting groove, the one-way transmission mechanism being mounted in the mounting groove, a cover plate being mounted at the slot opening of the mounting groove, the adjusting member arranged outside the shell being connected with the input end of the one-way transmission mechanism through the cover plate, the shell being provided with a first through hole communicating the containing cavity and the mounting groove, and the rotating shaft being connected with the output end of the one-way transmission mechanism through the first through hole.

6. The axle-locked line wheel structure according to claim 5, wherein The adjusting member comprises an adjusting rod and a knob, one end of the adjusting rod is fixed with the knob outside the shell, the other end of the adjusting rod is inserted into the installation slot through the perforation of the cover plate, the insertion end of the adjusting rod is provided with a limiting part which is limited inside the cover plate, the sun gear comprises a sun gear and a sun disc, the sun gear is fixed on the end face of one end of the sun disc and is engaged with the inner side of the planet gear, the end face of the other end of the sun disc is provided with a connecting column, the adjusting rod is provided with a column groove corresponding to the connecting column, the connecting column is inserted into the column groove so that the adjusting rod can drive the sun disc and the sun gear to rotate, and the sun disc is limited between the adjusting rod and the planet gear.

7. The axle-locked line wheel structure according to claim 5, wherein The installation slot comprises four-stage circular grooves with different inner diameters, the inner diameters of the circular grooves gradually decrease from one side to the other side, the first-stage circular groove located at the outer side has the largest diameter, there is a step between adjacent circular grooves, the shaft locking ring is arranged in the fourth-stage circular groove, the planet carrier is arranged in the third-stage circular groove and is limited outside the shaft locking ring, the inner ring gear is arranged in the second-stage circular groove and is pressed on the step between the second-stage circular groove and the third-stage circular groove, and the cover plate is accommodated in the first-stage circular groove and is pressed outside the inner ring gear, and the cover plate is connected to the shell by screws.

8. The axle-locked line wheel structure according to claim 7, wherein The inner side of the inner ring gear is provided with a plurality of first clamping teeth, the step between the second-stage circular groove and the third-stage circular groove is provided with a plurality of second clamping teeth, the first clamping teeth and the second clamping teeth are misaligned and clamped to limit the rotation of the inner ring gear relative to the shell.

9. The axle-locked line wheel structure according to claim 7, wherein One side of the shaft locking ring is closed and provided with a side plate, the side plate and the internal space of the shaft locking ring are combined to form an accommodation groove for accommodating the roller and the pawl, a second through hole is arranged in the center of the side plate for the end of the shaft to pass through, a clamping block is arranged on the side wall of the shaft locking ring, and a clamping groove corresponding to the clamping block is arranged on the inner wall of the fourth-stage circular groove, and the clamping block is clamped in the clamping groove to limit the rotation of the shaft locking ring relative to the shell.

10. The axle-locked line wheel structure according to claim 5, wherein The winding wheel comprises a wheel body and two side covers, the wheel body is provided with a coil spring groove on both sides, a coil spring is arranged in the coil spring groove, the two side covers are respectively arranged on both sides of the wheel body and cover the coil spring groove, the two side covers and the outer periphery of the wheel body are combined to form a rope groove for winding the lifting rope, the shaft passes through the wheel body and the two side covers, the shaft and the two side covers are rotatably connected through bearings, and the end of the shaft extending out of the side cover is rotatably connected with the shell through a bearing.

Images