Rope winding disc and auxiliary rope pulling device with same

Abstract

The rope winding disc comprises an inner winding wheel and an outer winding wheel detachably fixed to the inner winding wheel, the side ends of the winding wheel and the outer winding wheel jointly form a rope winding groove, a plurality of first side holes and a plurality of second side holes, the rope winding groove is used for installing a pull rope, and the section of the rope winding groove is in a trapezoid shape with the wide outer portion and the narrow inner portion. The joints of the upper ends of the first side holes and the upper surface of the inner rolling wheel are in curved surface transition, and the joints of the lower ends of the second side holes and the lower surface of the outer rolling wheel are in curved surface transition. According to the rope winding disc and the auxiliary rope pulling device with the rope winding disc, the basic requirements for driving and pulling assistance of the pull rope can be met, and the pull rope can be expanded and clamped into the side ends of the rope winding disc in the mode that the upper side end and the lower side end of the rope winding disc are respectively provided with the side holes which are staggered in the vertical direction. Therefore, the connection stability between the pull rope and the rope winding disc is improved, and the pull rope is driven and pulled more stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of heavy object lifting assistance, and particularly relates to a rope winding disc and an auxiliary pulling rope device with the same. Background Art

[0002] In production and life, such as in the field of communication tower construction, when transporting heavy objects to high places, in order to achieve the effects of saving time and effort and facilitating transportation, people usually use an auxiliary pulling rope device.

[0003] For the existing auxiliary pulling rope device, although it can meet the need of auxiliary pulling of the pulling rope to satisfy people's need of auxiliary lifting of heavy objects, it usually drives and pulls the pulling rope by relying on the friction between the pulling rope and the side wall of the rope winding groove. The contact area between the pulling rope and the rope winding groove is relatively limited, so the friction between the pulling rope and the rope winding disc is relatively limited, resulting in that the pulling rope is very easy to slide relative to the rope winding disc. Therefore, the auxiliary pulling effect on the pulling rope is relatively limited, and there is a problem of poor stability.

[0004] For example, the invention with the publication number of CN 112027980 A discloses a hanging universal rope climbing device. In the technical solution described in this patent application, the power mechanism drives the driving wheel to rotate, and uses the friction between the driving wheel and the rope to cause the rope climbing device to drive the load to move vertically along the lifting rope through the load hanging hole. Since only the friction between the driving wheel and the rope is relied on to pull and drive the rope, during the use process, the rope is very easy to slip relative to the driving wheel, so it will affect the auxiliary effect of lifting heavy objects, and there is a problem of insufficient stability. Summary of the Utility Model

[0005] In view of this, aiming at the deficiencies of the prior art, the utility model provides a rope winding disc and an auxiliary pulling rope device with the same, which can not only meet the basic needs of driving and pulling the pulling rope, but also increase the connection stability between the pulling rope and the rope winding disc by respectively opening a plurality of side holes offset in the up and down directions at the upper and lower ends of the rope winding disc, so as to drive and pull the pulling rope more stably.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A rope winding disc, comprising an inner winding wheel and an outer winding wheel detachably fixed to the inner winding wheel. The side ends of the inner winding wheel and the outer winding wheel together form a rope winding groove for installing a pulling rope and having a trapezoidal cross-section that is wider outside and narrower inside. The middle parts of both the inner winding wheel and the outer winding wheel are respectively detachably fixed to the output shaft of the driving mechanism. A plurality of first side holes are evenly arranged around the output shaft of the driving mechanism at the side end of the inner winding wheel. Second side holes that are misaligned with the corresponding first side holes are arranged around the output shaft of the driving mechanism at the side end of the outer winding wheel. The number of the first side holes and the second side holes is the same; the connection between the upper end of the first side hole and the upper surface of the inner winding wheel is a curved surface transition, and the connection between the lower end of the second side hole and the lower surface of the outer winding wheel is a curved surface transition.

[0007] The width of the end of the first side hole far from the output shaft of the driving mechanism is greater than the width of the end close to the output shaft of the driving mechanism. The cross-sectional shape of the first side hole is the same as that of the second side hole. That is, the horizontal cross-section of the first side hole and the second side hole is a trapezoidal structure, preferably an isosceles trapezoid, with the widest width at the end far from the center of the circle and gradually decreasing inward. This structure makes the inner edges of the first side hole and the second side hole (i.e., the connection between the upper end of the first side hole and the upper surface of the inner winding wheel and the connection between the lower end of the second side hole and the lower surface of the outer winding wheel) as perpendicular as possible to the central axis of the pulling rope. When the inner edge applies a pulling force to the pulling rope, the force is more concentrated and is consistent with the axis of the pulling rope, so that the squeezing and grasping effect of the inner edge on the pulling rope is optimal.

[0008] As a further improvement of the present utility model, the corners of the cross-section of the first side hole are curved surface transitions, and the corners of the cross-section of the second side hole are curved surface transitions.

[0009] As a further improvement of the present utility model, the corners of the cross-section of the first side hole are non-curved surface transitions, and the corners of the cross-section of the second side hole are non-curved surface transitions.

[0010] As a further improvement of the present utility model, at least one fixing bolt for screwing and fixing the outer winding wheel is provided at the bottom of the inner winding wheel, and a threaded fixing hole adapted to the fixing bolt is provided on the outer winding wheel.

[0011] As a further improvement of the present utility model, the cross-section of the rope winding groove is an isosceles trapezoid.

[0012] An auxiliary rope puller has a rope winding disc as described in any one of the preceding items.

[0013] As a further improvement of the present utility model, it includes a vertically arranged housing with an open bottom. A bottom plate is detachably arranged at the bottom of the housing. A reduction motor is arranged on the lower surface of the left end of the top of the housing. The output shaft of the reduction motor extends to the upper side of the housing. An installation shaft for installing an inner winding wheel and an outer winding wheel is arranged on the output shaft of the reduction motor. A limit module is arranged at the right end of the top of the housing. A separation module for separating the pulling rope is also arranged on the top of the housing and is located outside the inner winding wheel and the outer winding wheel.

[0014] As a further improvement of the present utility model, the limit module includes two fixed shafts arranged at the right end of the top of the housing. Guide wheels are respectively rotatably arranged on the two fixed shafts through bearings. A limit plate is sleeved on the two fixed shafts and is located above the two guide wheels. First clamping bolts for clamping the limit plate are respectively screwed on the outer ends of the two fixed shafts.

[0015] As a further improvement of the present utility model, the separation module includes a limit post screwed and fixed to the top of the housing. A screwing groove is also arranged at the top of the limit post.

[0016] As a further improvement of the present utility model, a partition plate is also arranged above the housing and is located below the inner winding wheel. Support bolts for screwing and fixing the top of the reduction motor are arranged on the top of the housing. A threaded installation hole adapted to the support bolt is arranged on the output shaft of the reduction motor. Support nuts located above the housing and having the same top level as the top of the support bolt are respectively screwed on the lower ends of the two fixed shafts. The partition plate is located above the two support nuts and a plurality of support bolts, and is inserted outside the two fixed shafts and the output shaft of the reduction motor. A first through hole adapted to the output shaft of the reduction motor is arranged on the top of the housing. A second through hole adapted to the output shaft of the reduction motor is arranged on the partition plate. A clamping hole adapted to the two fixed shafts is also arranged on the partition plate. Both the inner winding wheel and the outer winding wheel are inserted and fixed to the installation shaft. Installation jacks adapted to the installation shaft are arranged in the middle of both the inner winding wheel and the outer winding wheel. The radial cross-sections of both the installation shaft and the installation jack are polygonal. A second clamping bolt for clamping the outer winding wheel is screwed on the top of the installation shaft. A protective plate sleeved outside the winding wheel disc is also arranged on the top of the housing. A third through hole adapted to the limit post is arranged on the partition plate. The radial cross-sections of both the installation shaft and the installation jack are regular hexagons.

[0017] As a further improvement of the utility model, a first gasket is also sleeved on the installation shaft between the upper part of the outer winding wheel and the pressing bolt, and a second gasket is also arranged between the top of the housing and the nut of the support bolt; a power cord electrically connected to the reduction motor is also arranged at the side end of the housing, and a control switch electrically connected to the reduction motor is arranged on the bottom plate; the bottom plate is clamped and fixed to the bottom of the housing, a plurality of fastening bolts for screwing and fixing the bottom of the housing are arranged on the bottom plate, and threaded fastening holes adapted to the plurality of fastening bolts are arranged at the top of the housing; a fixing frame is also arranged on the housing, and a lifting ring is rotatably arranged on the fixing frame; the upper surface of the partition plate is a smooth surface.

[0018] As a further improvement of the utility model, a locking pawl for preventing the winding rope disc from reversing is also rotatably arranged on the partition plate through a connecting screw, a torsion spring sleeved on the connecting screw is also arranged on the locking pawl, a connecting column is arranged at the bottom of the locking pawl, an arc-shaped hole adapted to the connecting column is arranged on the partition plate, an adjusting bolt is also screwed on the locking pawl, a limiting hole adapted to the adjusting bolt is arranged on the partition plate, and a plurality of locking teeth adapted to the locking pawl are arranged around the circumference of the inner winding wheel.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] First, in the prior art, the friction between the winding rope disc and the pulling rope is used to drive and pull the pulling rope. Since the friction between the winding rope disc and the pulling rope is usually limited, there is a problem of limited stability; however, in the technical solution described in this application, on the basis of driving and pulling the pulling rope by the friction between the winding rope disc and the pulling rope, the side end of the pulling rope can also be expanded and clamped into a plurality of first side holes and second side holes at the side end of the winding rope disc. Moreover, since the first side holes and the second side holes are completely misaligned with each other in the up and down directions, the pulling rope can be clamped to the upper and lower side ends of the winding rope disc along an S-shaped path. Therefore, the friction force and pulling effect on the pulling rope can be increased by significantly increasing the friction contact area of the pulling rope. And because the vertical cross-section of the winding groove is a trapezoid with a wider outer width and a narrower inner width, the winding rope disc can clamp and fix the pulling rope, so that the winding rope disc can drive and assist in pulling the pulling rope more stably.

[0021] Second, in the prior art, when being interfered by wind force or the protruding structure on the communication tower pole and it is necessary to quickly pause the pulling action of the guy rope for a short time to facilitate the adjustment of the path of the guy rope, the user needs to free one hand to disconnect the control switch, so that the driving mechanism stops driving the pulling of the guy rope. After that, the user still needs to free one hand to laboriously reconnect the control switch, so that the driving motor continues to operate. Only then can the pulling drive of the guy rope be continued. And freeing one hand to operate the control switch is very dangerous for people at a high place on the communication tower pole. However, in the technical solution described in the present application, the user only needs to loosen the guy rope slightly to release the clamping and fixing of the guy rope and the rope winding groove, and can temporarily release the drive of the guy rope while the rope winding disc continues to rotate under the drive of the reduction motor, so that the user does not need to turn off the reduction motor, and can conveniently pause the pulling drive of the guy rope for a short time. Subsequently, the user only needs to tighten the guy rope again to make the guy rope and the rope winding groove be clamped and fixed together again, and can continue to drive the pulling of the guy rope without starting the reduction motor again. Therefore, it is very convenient and can more fully meet people's usage requirements.

[0022] Third, after placing the inner winding wheel and the outer winding wheel together in a way that the first side holes and the second side holes are completely misaligned, the inner winding wheel and the outer winding wheel can be flexibly fixed together through the fixing bolts.

[0023] Fourth, because the connection between the upper ends of the multiple first side holes and the upper surface of the inner winding wheel is not a curved surface transition, and the connection between the lower ends of the multiple second side holes and the lower surface of the outer winding wheel is not a curved surface transition, the first side holes and the second side holes can more firmly clamp and fix the guy rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0025] Figure 1 is a schematic structural view of the present utility model;

[0026] Figure 2 is a front sectional structural view of the rope winding disc of the present utility model;

[0027] Figure 3 is a top view structural view of the rope winding disc of the present utility model;

[0028] Figure 4 is a schematic structural view of the auxiliary guy rope puller of the present utility model;

[0029] Figure 5 is a schematic structural view of the housing, bottom plate, control switch, and fastening bolts of the present utility model;

[0030] Figure 6Schematic diagram of the partition board, second through-hole, clamping hole, third through-hole, arc hole, and limiting hole of the present utility model;

[0031] Figure 7 Schematic diagram of the partition board, support bolt, second through-hole, protective plate, fixed shaft, bearing, support nut, arc hole, fixed bracket, and lifting ring of the present utility model;

[0032] Figure 8 Schematic diagram of the housing, mounting shaft, support bolt, first through-hole, fixed shaft, bearing, first clamping bolt, support nut, and second gasket of the present utility model;

[0033] Figure 9 Schematic diagram of the rope winding disc of another embodiment of the present utility model;

[0034] Figure 10 Top view schematic diagram of the rope winding disc of another embodiment of the present utility model.

[0035] In the figure: 101, inner winding wheel; 102, outer winding wheel; 103, rope winding groove; 104, first side hole; 105, second side hole; 106, fixing bolt; 201, housing; 202, bottom plate; 203, mounting shaft; 204, partition board; 205, support bolt; 206, first through-hole; 207, second through-hole; 208, clamping hole; 209, mounting socket; 210, second clamping bolt; 211, protective plate; 212, third through-hole; 301, fixed shaft; 302, guide wheel; 303, bearing; 304, limiting plate; 305, first clamping bolt; 306, support nut; 401, limiting post; 402, screwing groove; 501, locking pawl; 502, torsion spring; 503, connecting screw; 504, arc hole; 505, adjusting bolt; 506, limiting hole; 507, locking tooth; 601, first gasket; 602, second gasket; 603, power cord; 604, control switch; 605, fixed bracket; 606, lifting ring; 607, fastening bolt. Detailed implementation manners

[0036] To better understand the present utility model, the content of the present utility model will be further clearly elaborated below in conjunction with embodiments. However, the protected content of the present utility model is not limited to the following embodiments only. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.

[0037] Such as Figure 1 、 2, as shown in FIGS. 3, a rope winding disc includes an inner winding wheel 101 and an outer winding wheel 102 detachably fixed to the inner winding wheel 101. The side ends of the inner winding wheel 101 and the outer winding wheel 102 together form a rope winding groove 103 for installing a pull rope and having a trapezoidal cross-section that is wider outside and narrower inside. The middle parts of the inner winding wheel 101 and the outer winding wheel 102 are respectively detachably fixed to the output shaft of the driving mechanism. A plurality of first side holes 104 are evenly arranged around the output shaft of the driving mechanism at the side end of the inner winding wheel 101, and second side holes 105 that are misaligned with the corresponding first side holes 104 are arranged around the output shaft of the driving mechanism at the side end of the outer winding wheel 102. The number of the first side holes and the second side holes is the same. The misalignment of the first side holes and the second side holes means that the first side holes and the second side holes do not directly face each other, but are staggered around the output shaft. And the optimal solution is that the central axis of the second side hole corresponds to the middle position between the two closest first side holes.

[0038] As Figure 1 , 2 , as shown in FIGS. 3, the connection between the upper ends of the plurality of first side holes 104 and the upper surface of the inner winding wheel 101 is a curved surface transition, and the connection between the lower ends of the plurality of second side holes 105 and the lower surface of the outer winding wheel 102 is a curved surface transition. This can avoid the edges of the first side holes and the second side holes from wearing the pull rope and extend the service life of the pull rope.

[0039] As Figure 9 , 10 shown, in another embodiment, the connection between the upper ends of the plurality of first side holes 104 and the upper surface of the inner winding wheel 101 is a non-curved surface transition, and the connection between the lower ends of the plurality of second side holes 105 and the lower surface of the outer winding wheel 102 is a non-curved surface transition. Because the connection between the upper ends of the plurality of first side holes 104 and the upper surface of the inner winding wheel 101 is a non-curved surface transition, and the connection between the lower ends of the plurality of second side holes 105 and the lower surface of the outer winding wheel 102 is a non-curved surface transition, when the pull rope is in contact with the first side holes and the second side holes, the friction between the pull rope and the first side holes can be effectively increased, and the friction between the bolt and the second side holes can be effectively increased. Thus, the rope winding disc can drive and pull the pull rope more firmly. Although it will slightly wear the pull rope to a certain extent, the user only needs to replace the pull rope.

[0040] The width of the first side hole at the end far from the output shaft of the driving mechanism is greater than the width at the end close to the output shaft of the driving mechanism. The cross-sectional shape of the first side hole is the same as that of the second side hole. That is, the horizontal cross-sections of the first side hole and the second side hole are trapezoidal structures, preferably isosceles trapezoids, with the widest width at the end far from the center of the circle and gradually decreasing inward. This structure makes the inner edges of the first side hole and the second side hole (i.e., the connection between the upper end of the first side hole and the upper surface of the inner winding wheel and the connection between the lower end of the second side hole and the lower surface of the outer winding wheel) as perpendicular as possible to the central axis of the pulling rope. When the inner edge exerts a pulling force on the pulling rope, the force is more concentrated and is consistent with the axis of the pulling rope, so that the squeezing and grasping effect of the inner edge on the pulling rope is optimal.

[0041] As Figure 1 、 2 、3 shown, the corners of the cross-section of the first side hole can be transitioned by a curved surface, and the corners of the cross-section of the second side hole can be transitioned by a curved surface. Since the connections between the upper ends of multiple first side holes 104 and the upper surface of the inner winding wheel 101 are transitioned by a curved surface, and the connections between the lower ends of multiple second side holes 105 and the lower surface of the outer winding wheel 102 are transitioned by a curved surface, when the pulling rope is in contact with the inner edge of the first side hole and the second side hole, it can effectively avoid abrasion of the pulling rope.

[0042] As Figure 9 、 10 shown, in another embodiment, the corners of the cross-section of the first side hole are not transitioned by a curved surface, and the corners of the cross-section of the second side hole are not transitioned by a curved surface, which will not be elaborated here.

[0043] As Figure 1 、 2 、3 shown, three fixing bolts 106 for screwing and fixing the outer winding wheel 102 are provided at the bottom of the inner winding wheel 101, and threaded fixing holes adapted to the three fixing bolts 106 are provided on the outer winding wheel 102. After placing the inner winding wheel and the outer winding wheel together in a way that the first side hole and the second side hole are completely misaligned, the fixing bolts can pass through the side wall of the inner winding wheel and be screwed and fixed to the threaded fixing holes on the outer winding wheel, thereby flexibly fixing the inner winding wheel and the outer winding wheel together.

[0044] As Figure 2 shown, the cross-section of the rope winding groove 103 is an isosceles trapezoid. In another embodiment, the cross-section of the rope winding groove 103 can also be a non-isosceles trapezoid with a wider outer width and a narrower inner width, which will not be elaborated here.

[0045] In the embodiments of the present application, both the first side hole 104 and the second side hole 105 are through holes.

[0046] The user can make the pull rope bypass the rope winding groove in the middle of the rope winding disc, and then make the rope winding disc rotate through the driving mechanism, so as to drive and pull the pull rope to assist in lifting the heavy object; during use, the user can pull the pull rope to make the pull rope snap into the rope winding groove, so that on the basis of driving and pulling the pull rope through the friction between the rope winding disc and the pull rope, the side end of the pull rope expands, and its upper and lower side ends are respectively snapped into a plurality of first side holes and second side holes on the side end of the rope winding disc. Also, because the first side holes and the second side holes are completely misaligned in the up and down directions, the pull rope can be snapped onto the upper and lower side ends of the rope winding disc along an S-shaped path, so that the friction force and pulling effect on the pull rope can be increased by significantly increasing the friction contact area of the pull rope. And because the vertical cross-section of the rope winding groove is a trapezoid with a wider outer width and a narrower inner width, the rope winding disc can clamp and fix the pull rope, so that the rope winding disc can drive and assist in pulling the pull rope more stably.

[0047] When it is necessary to quickly and temporarily pause the pulling action on the pull rope due to wind interference or interference from the protruding structure on the communication tower pole in order to adjust the path of the pull rope, the user only needs to loosen the pull rope slightly to release the clamping and fixing of the pull rope and the rope winding groove, without shutting down the control switch and without making the reduction motor pause. Under the condition that the rope winding disc continues to rotate under the drive of the reduction motor, the friction force exerted by the rope winding disc on the pull rope can be reduced, so that the driving action of the user on the pull rope and the friction driving action of the rope winding disc on the bolt reach a balance with the gravity pulling action of the heavy object on the pull rope, thereby temporarily releasing the drive on the pull rope, and enabling the user to conveniently pause the pulling drive on the pull rope for a short time without shutting down the reduction motor.

[0048] As Figure 4 、 5 shown, an auxiliary pull rope device has a rope winding disc as described in any one of the previous items.

[0049] As Figure 4 、 5 shown, it includes a housing 201 that is vertically arranged and has an open bottom. A bottom plate 202 is detachably arranged at the bottom of the housing 201. A reduction motor is arranged on the lower surface of the left end of the top of the housing 201. The output shaft of the reduction motor extends to the upper side of the housing 201. An installation shaft 203 for installing an inner reel 101 and an outer reel 102 is arranged on the output shaft of the reduction motor. A limiting module is arranged at the right end of the top of the housing 201. A separation module for separating the pull rope is also arranged at the top of the housing 201 and is located outside the inner reel 101 and the outer reel 102.

[0050] As Figure 4 、 6, as shown in Figures 7 and 8, the limiting module includes two fixed shafts 301 arranged at the right end of the top of the housing 201. Guide wheels 302 are rotatably arranged on the two fixed shafts 301 through bearings 303 respectively. A limiting plate 304 located above the two guide wheels 302 is sleeved on the two fixed shafts 301 together. First clamping bolts 305 for clamping the limiting plate 304 are screwed on the outer ends of the two fixed shafts 301 respectively. The lower ends of the two fixed shafts 301 are fixedly screwed to the top of the housing 201, and threaded connection holes adapted to the lower ends of the fixed shafts 301 are provided at the top of the housing 201.

[0051] As Figure 4 shown, the separation module includes a limiting post 401 fixedly screwed to the top of the housing 201, and a screwing groove 402 is further provided at the top of the limiting post 401.

[0052] As Figure 4 , 6 , as shown in Figures 7, a partition plate 204 is further provided above the housing 201 and below the inner reel 101; support bolts 205 for screwing and fixing the top of the reduction motor are provided at the top of the housing 201. Threaded mounting holes adapted to the support bolts 205 are provided on the output shaft of the reduction motor. Support nuts 306 located above the housing 201 and having the same top level as the top of the support bolts 205 are screwed on the lower ends of the two fixed shafts 301 respectively. The partition plate 204 is located above the two support nuts 306 and a plurality of support bolts 205, and is inserted outside the two fixed shafts 301 and the output shaft of the reduction motor. A first through hole 206 adapted to the output shaft of the reduction motor is provided at the top of the housing 201. A second through hole 207 adapted to the output shaft of the reduction motor is provided on the partition plate 204. Clamping holes 208 adapted to the two fixed shafts 301 are further provided on the partition plate 204; both the inner reel 101 and the outer reel 102 are fixedly inserted with the mounting shaft 203. Mounting jacks 209 adapted to the mounting shaft 203 are provided in the middle of both the inner reel 101 and the outer reel 102. The radial cross-sections of the mounting shaft 203 and the mounting jack 209 are both polygonal. A second clamping bolt 210 for clamping the outer reel 102 is screwed on the top of the mounting shaft 203; a protective plate 211 sleeved outside the reel disc is further provided at the top of the housing 201. A third through hole 212 adapted to the limiting post 401 is provided on the partition plate 204. The radial cross-sections of the mounting shaft 203 and the mounting jack 209 are both regular hexagons. In another embodiment, the radial cross-sections of the mounting shaft 203 and the mounting jack 209 can also be regular triangles, regular quadrilaterals, regular pentagons and other polygons, so as to satisfy the insertion and fixation of the rope winding disc and the mounting shaft 203, and prevent the rope winding disc from automatically rotating relative to the mounting shaft 203.

[0053] As Figure 4 , 5As shown in the figure, a first gasket 601 is also sleeved on the mounting shaft 203 between the upper part of the outer winding wheel 102 and the clamping bolt. A second gasket 602 is also arranged between the top of the housing 201 and the nut of the support bolt 205. A power cord 603 electrically connected to the reduction motor is arranged on the side end of the housing 201, and a control switch 604 electrically connected to the reduction motor is arranged on the bottom plate 202. The bottom plate 202 is clamped and fixed to the bottom of the housing 201. A plurality of fastening bolts 607 for screwing and fixing the bottom of the housing 201 are arranged on the bottom plate 202, and threaded fastening holes adapted to the plurality of fastening bolts 607 are arranged on the top of the housing 201. A fixing frame 605 is also arranged on the housing 201, and a lifting ring 606 is rotatably arranged on the fixing frame 605. The upper surface of the partition plate 204 is a smooth surface, which can effectively avoid friction and hook interference with the movement of the pull rope.

[0054] When the user places the reduction motor into the interior of the housing 201 with the output shaft facing upward and makes the output shaft of the reduction motor pass through the first through hole 206, the support bolt 205 can pass through the top of the housing 201 and be screwed and fixed to the threaded mounting hole, so as to fix the reduction motor to the lower surface of the left end of the top of the housing 201. Subsequently, the bottom plate 202 and the bottom opening of the housing 201 can be clamped and fixed together. Then, the fastening bolts 607 can pass through the side wall of the bottom plate 202 and be screwed and fixed to the threaded fastening holes, so as to realize the flexible fixation of the bottom plate 202 and the housing 201. Then, the support nut 306 can be screwed and fixed to the lower end of the fixed shaft 301, and its bottom can be made to abut against the upper surface of the right end of the top of the housing 201. Subsequently, the partition plate 204 can be placed on the top of the support bolt 205 and the support nut 306 by passing the second through hole 207 through the output shaft of the reduction motor and the third through hole 212 through the fixed shaft 301. Then, the guide wheel 302 is rotatably connected to the fixed shaft 301 through the bearing 303. Then, the first clamping bolt 305 passes through the limiting plate 304 and is screwed to the top of the mounting shaft 203, so as to clamp and fix the limiting plate 304 to the fixed shaft 301 and clamp and fix the bearing 303 and the guide wheel 302 to the top of the partition plate 204. Then, the winding reel can be inserted and fixed to the mounting shaft 203 through the insertion hole 209 and the mounting shaft 203, and the bottom of the winding reel, that is, the bottom of the inner winding wheel 101, can be made to abut against the top of the output shaft of the reduction motor. Then, the second clamping bolt 210 can be screwed and fixed to the top of the mounting shaft 203, so as to clamp and fix the top of the winding reel, that is, the outer winding wheel 102. In this way, the assembly of the device can be completed.

[0055] After that, the user can detachably connect one end of the pulling rope to the heavy object to be lifted, and let the free end of the pulling rope first bypass the pulley fixed at a high place, then successively pass through the inner side of the guiding wheel 302 at the rear side of the right end, the rope winding groove 103, and the outer side of the limiting post 401, and then bypass the inner side of the guiding wheel 302 at the front side; subsequently, the auxiliary rope pulling device can be lifted in front of the body by the lifting ring 606 or fixed to the user's waist through the waist belt, or fixed to other objects through structures such as ropes. Then, the free end of the pulling rope can be pulled to make the pulling rope snap into the rope winding groove 103. After that, the power cord 603 can be electrically connected to the power supply and the control switch 604 can be activated, so as to start the reduction motor, make the mounting shaft 203 and the rope winding disc rotate. The user only needs to gently drive the free end of the pulling rope, that is, apply a guiding and light pulling driving force to the pulling rope bracket, and then the pulling rope can be pulled labor-savingly and conveniently, so as to lift the heavy object to the required height and conveniently complete the lifting of the heavy object.

[0056] During the process of pulling the pulling rope to lift the heavy object, the limiting post 401 can prevent the part of the pulling rope wound out from the rope winding disc from being wound together with the part of the rope winding towards the rope winding disc, thus affecting the normal use of the device by people.

[0057] According to another embodiment of the present invention, as Figure 4 shown, a locking pawl 501 for preventing the rope winding disc from rotating in reverse is also rotatably arranged on the partition plate 204 through a connecting screw 503. A torsion spring 502 sleeved on the connecting screw 503 is also arranged on the locking pawl 501. A connecting column is arranged at the bottom of the locking pawl 501. An arc-shaped hole 504 adapted to the connecting column is arranged on the partition plate 204. An adjusting bolt 505 is also screwed on the locking pawl 501. A limiting hole 506 adapted to the adjusting bolt 505 is arranged on the partition plate 204. A plurality of locking teeth 507 adapted to the locking pawl 501 are arranged around the circumference of the inner reel 101.

[0058] During the use of the device, the adjusting screw can also be separated from the limiting hole 506. The locking pawl 501 is turned towards the inner reel 101 by the torsion spring 502. Through the cooperation between the claw body of the locking pawl 501 and the plurality of locking teeth 507 at the side end of the inner reel 101, the internal gear and the outer rope winding disc 102, that is, the rope winding disc can only rotate in one direction, avoiding the reverse rotation of the rope winding disc, so that the user can lift the heavy object more stably.

[0059] When it is not necessary to lock and limit the reverse inner reel 101 and the rope winding disc by the cooperation of the locking pawl 501 and the locking teeth 507, the locking pawl 501 can be rotated relative to the connecting screw 503, and the adjusting bolt 505 can be passed through the locking pawl 501 and reconnected to the limiting hole 506, so that the locking pawl 501 is away from the locking teeth 507, avoiding the continuous clicking sound caused by the frequent contact between the rope winding disc and the inner reel 101 and the locking pawl 501 during the rotation operation.

[0060] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A rope winding reel, characterized in that: It includes an inner winding wheel (101) and an outer winding wheel (102) detachably fixed to the inner winding wheel (101). The inner winding wheel (101) and the side ends of the outer winding wheel (102) together form a rope winding groove (103) for installing a pulling rope and having a trapezoidal cross-section that is wider outside and narrower inside. The middle parts of the inner winding wheel (101) and the outer winding wheel (102) are respectively detachably fixed to the output shaft of the driving mechanism. A plurality of first side holes (104) are uniformly arranged around the output shaft of the driving mechanism at the side end of the inner winding wheel (101). Second side holes (105) that are misaligned with the corresponding first side holes (104) are arranged around the output shaft of the driving mechanism at the side end of the outer winding wheel (102). The number of the first side holes and the second side holes is the same.

2. The cord reel according to claim 1, wherein: At least one fixing bolt (106) for screwing and fixing the outer winding wheel (102) is arranged at the bottom of the inner winding wheel (101). Thread fixing holes adapted to the fixing bolts (106) are arranged on the outer winding wheel (102).

3. The winding reel according to claim 1, wherein: The cross-section of the rope winding groove (103) is an isosceles trapezoid; the connection between the upper end of the first side hole (104) and the upper surface of the inner winding wheel (101) is in a curved surface transition. The connection between the lower end of the second side hole (105) and the lower surface of the outer winding wheel (102) is in a curved surface transition; the width of the end of the first side hole (104) far from the output shaft of the driving mechanism is greater than the width of the end close to the output shaft of the driving mechanism. The cross-sectional shape of the first side hole (104) is the same as that of the second side hole (105).

4. An auxiliary drawstring device, characterized in that: It has a rope winding disc as described in any one of claims 1-3.

5. The auxiliary drawstring device according to claim 4, characterized in that: It includes a housing (201) arranged vertically and having an open bottom. A bottom plate (202) is detachably arranged at the bottom of the housing (201). A reduction motor is arranged on the lower surface of the left end at the top of the housing (201). The output shaft of the reduction motor extends to the upper side of the housing (201). An installation shaft (203) for installing the inner winding wheel (101) and the outer winding wheel (102) is arranged on the output shaft of the reduction motor. A limiting module is arranged at the right end at the top of the housing (201). A separation module for separating the pulling rope is also arranged at the top of the housing (201) and located outside the inner winding wheel (101) and the outer winding wheel (102).

6. The auxiliary drawstring device according to claim 5, characterized in that: The limiting module includes two fixed shafts (301) arranged at the right end at the top of the housing (201). Guide wheels (302) are rotatably arranged on the two fixed shafts (301) through bearings (303). A limiting plate (304) located above the two guide wheels (302) is sleeved on the two fixed shafts (301) together. First pressing bolts (305) for pressing and fixing the limiting plate (304) are respectively screwed on the outer ends of the two fixed shafts (301).

7. The auxiliary drawstring device according to claim 5, characterized in that: The separation module includes a limiting column (401) screwed and fixed to the top of the housing (201). A screwing groove (402) is also arranged at the top of the limiting column (401).

8. The auxiliary drawstring device according to claim 5, characterized in that: Above the said housing (201), there is also a partition board (204) located below the inner winding wheel (101); on the top of the housing (201), there are support bolts (205) for screw fixation at the top of the reduction motor. There is a threaded mounting hole adapted to the support bolt (205) on the output shaft of the reduction motor. There is a first through hole (206) adapted to the output shaft of the reduction motor on the top of the housing (201). There is a second through hole (207) adapted to the output shaft of the reduction motor on the partition board (204). There are also clamping holes (208) adapted to the two fixed shafts (301) on the partition board (204); both the inner winding wheel (101) and the outer winding wheel (102) are inserted and fixed to the mounting shaft (203). There are mounting jacks (209) adapted to the mounting shaft (203) in the middle of both the inner winding wheel (101) and the outer winding wheel (102). The radial cross-sections of the mounting shaft (203) and the mounting jack (209) are both polygonal. There is a second clamping bolt (210) screwed on the top of the mounting shaft (203) for pressing and fixing the outer winding wheel (102); on the top of the housing (201), there is also a protective plate (211) sleeved outside the reel disc. There is a third through hole (212) adapted to the limit post (401) on the partition board (204).

9. The auxiliary drawstring device according to claim 8, wherein: The upper surface of the said partition board (204) is a smooth surface.

10. The auxiliary drawstring device according to claim 8, wherein: On the said partition board (204), there is also a locking pawl (501) for preventing the winding rope disc from reversing rotatably arranged through a connecting screw (503). There is also a torsion spring (502) sleeved on the connecting screw (503) on the locking pawl (501). There is a connecting column at the bottom of the locking pawl (501). There is an arc-shaped hole (504) adapted to the connecting column on the partition board (204). There is also an adjusting bolt (505) screwed on the locking pawl (501). There is a limit hole (506) adapted to the adjusting bolt (505) on the partition board (204). A plurality of locking teeth (507) adapted to the locking pawl (501) are arranged around the circumference of the inner winding wheel (101).

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