Rope winder with protection structure

Abstract

The utility model relates to a rope winder with a protection structure, which is characterized in that a rope winding roller, a driving mechanism, a fixed bracket and a movable bracket are arranged in a mounting shell; a first shaft body of the movable bracket is pivoted on the fixed bracket in a resettable manner, and a roller is rotatably sleeved on a second shaft body; a first inductive switch for triggering the driving mechanism to stop is arranged on the fixed bracket; the first inductive switch in an untriggered state is a certain distance away from the bottom of the movable bracket and is arranged below the roller; when the load force borne by the lifting rope is increased to a certain degree, the roller and the movable bracket deflect downwards and touch the first inductive switch to stop operation of the driving mechanism. According to the rope winder with the protection structure, the overweight protection function of the rope winder can be achieved, and the risk that a lifting rope is broken due to the fact that the lifting rope bears too large load is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rope reels, in particular to a rope reel with a protective structure. Background Art

[0002] In the prior art, a sling rope is a tool used to lift objects to a high altitude. In order to facilitate the retraction and release of the sling rope, the sling rope is generally wound in a rope reel. The extension and retraction of the sling rope are achieved by the forward and reverse rotation of the internal rotating mechanism of the rope reel. The objects mounted on the sling rope can automatically rise and fall. Therefore, in high-altitude transportation operations, the objects can be conveniently lifted to a high altitude through the rope reel, and the objects can also be quickly and conveniently transported from a high altitude to the ground, which is easy to use.

[0003] However, since rope reels are commonly used in many different fields, the weight of the objects that the ropes need to bear varies. Therefore, in actual use, when the weight of the object hanging on the rope is too heavy, if the rope reel continues to pull the rope from the top, the rope will break because the weight of the object exceeds the load-bearing capacity of the rope itself, which can easily cause the risk of high-altitude working accidents. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a rope reel with a protective structure, which can help to realize the overweight protection function of the rope reel and avoid the risk of breakage caused by excessive load-bearing of the lifting rope.

[0005] The utility model discloses a rope reel with a protective structure, comprising a mounting shell, a rope reel roller for winding a sling rope and a driving mechanism for driving the rope reel roller to rotate are arranged in the mounting shell, and a fixed bracket and a movable bracket are also arranged in the mounting shell;

[0006] The movable bracket is provided with a first shaft and a second shaft at opposite ends thereof; the first shaft is pivotally connected to the fixed bracket in a repositionable manner, and a roller for supporting the suspension rope upward is rotatably sleeved on the second shaft;

[0007] The fixing bracket is provided with a first induction switch for triggering the driving mechanism to stop;

[0008] Wherein, the first induction switch in an untriggered state is at a certain distance from the bottom of the movable bracket and corresponds to the bottom of the roller;

[0009] When the load force on the suspension rope increases to a certain extent, the roller together with the free end of the movable bracket deflects downward and touches the first sensing switch, so as to trigger the first sensing switch to stop the operation of the driving mechanism.

[0010] The fixed bracket is also provided with a second induction switch for triggering the rope reel to start the anti-loosening function;

[0011] Wherein, the second induction switch in an untriggered state contacts upwardly with the bottom of the movable bracket;

[0012] When the load force on the suspension rope is reduced to a certain extent, the free end of the movable bracket deflects upward and leaves the second sensing switch to trigger the second sensing switch to start the anti-loosening function of the rope reel.

[0013] The second induction switch includes a photoelectric switch and a movable block;

[0014] The movable block is repositionably disposed on the fixed bracket;

[0015] Wherein, when the photoelectric switch is not triggered, the bottom of the movable bracket presses downward on the movable block and drives the movable block to keep cutting into the light sensing area of ​​the photoelectric switch;

[0016] When the load force on the rope is reduced to a certain extent, the free end of the movable bracket deflects upward and leaves the movable block, so that the movable block returns to its original position and moves upward and leaves the light sensing area of ​​the photoelectric switch, thereby triggering the photoelectric switch to start the anti-loosening function of the rope reel.

[0017] The number of the photoelectric switches is several or the photoelectric switches are formed with several light-sensing areas;

[0018] The bottom of the movable block is integrally formed with a plurality of baffles which correspond downward to each light sensing area of ​​the photoelectric switch;

[0019] Wherein, the baffle moves in and out of the light sensing area of ​​the photoelectric switch as the movable block moves up and down.

[0020] The top of the movable block is integrally formed with an arc-shaped convex surface, and when the photoelectric switch is not triggered, the bottom of the movable bracket presses downward on the arc-shaped convex surface.

[0021] The fixing bracket is provided with a plurality of through holes, and each of the baffles is respectively inserted into and matched with the through holes.

[0022] The fixed bracket is provided with a limited countersunk hole;

[0023] A limiting column is integrally formed at the bottom of the movable block, and the limiting column is slidably fitted in the limiting counterbore.

[0024] The fixing bracket is provided with a mounting hole, and the first induction switch is sleeved in the mounting hole;

[0025] Limiting blocks are integrally formed on opposite sides of the inner wall of the mounting hole, and each of the limiting blocks is inserted into the side wall of the first induction switch.

[0026] A sleeve extending laterally is integrally formed on the fixed bracket, and the first shaft of the movable bracket is pivotally connected in the sleeve in a resetting manner.

[0027] The driving mechanism includes a motor, a first driven gear, a second driven gear and a rope winding roller gear;

[0028] The rope winding roller gear is coaxially fixed to one end of the rope winding roller;

[0029] The power output shaft of the motor is coaxially provided with a worm;

[0030] A turbine is coaxially fixed to one end of the first driven gear;

[0031] The worm and the worm gear are meshed with each other, the first driven gear and the second driven gear are meshed with each other, and the second driven gear and the rope winding roller gear are meshed with each other.

[0032] A rope reel with a protective structure of the utility model is additionally provided with a fixed bracket and a movable bracket in a mounting shell, the fixed bracket is fixedly installed in the mounting shell, and one end of the movable bracket is repositionably pivoted on the fixed bracket through a first shaft body, so that the movable bracket can rotate up and down around the first shaft body, and the free end of the movable bracket is rotatably sleeved with a roller for supporting the suspension rope upward, so that the load force on the suspension rope can be transmitted to the movable bracket through the roller, when the load force on the suspension rope is too large, the free end of the movable bracket can deflect downward accordingly, and when the load force on the suspension rope is reduced, the movable bracket can be reset upward around the first shaft body. At the same time, a first induction switch for triggering the stop of the driving mechanism is provided on the fixed bracket, and when the first induction switch is triggered, the driving mechanism can be controlled to stop operating by a conventional circuit method of the prior art, and when the first induction switch is not triggered, the bottom of the movable bracket is a certain distance away from the first induction switch, and the first induction switch corresponds to the bottom of the roller, that is, at this time, the free end of the movable bracket does not contact the first induction switch below. However, when the load force on the rope increases to a certain level, the load force on the rope is transmitted to the movable bracket through the roller, driving the free end of the movable bracket to deflect downward and touch the first sensing switch. At this time, the first sensing switch can be triggered to stop the operation of the driving mechanism, thereby realizing overweight protection of the rope reel and the rope, and avoiding the risk of breakage due to excessive load on the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is the overall structure diagram of the utility model;

[0035] Figure 2 It is the internal structure diagram of the utility model;

[0036] Figure 3 It is a partial enlarged view of the internal structure of the utility model;

[0037] Figure 4 It is a structural diagram of the movable bracket in the utility model;

[0038] Figure 5 It is a partial enlarged view of the internal structure of the utility model;

[0039] Figure 6 It is a partial enlarged view of the internal structure of the utility model;

[0040] Figure 7 It is a structural diagram of a fixed bracket in the utility model;

[0041] Figure 8 It is a partial enlarged view of the internal structure of the utility model;

[0042] Fig. 9 It is a structural diagram of the movable block in the utility model;

[0043] Fig.10 It is an assembly diagram of the driving mechanism in the utility model;

[0044] Fig.11 This is the assembly diagram of the drive mechanism in the utility model ( Fig.10 (view from the opposite direction).

[0045] Reference numerals:

[0046] 1. Mounting shell, 2. Rope winding roller, 3. Driving mechanism, 31. Motor, 32. First driven gear, 33. Second driven gear, 34. Rope winding roller gear, 35. Worm, 36. Turbine, 4. Fixed bracket, 5. Movable bracket, 6. First shaft, 7. Second shaft,

[0047] 8. Roller, 9. First induction switch, 10. Second induction switch, 11. Photoelectric switch,

[0048] 12. movable block, 13. baffle, 14. arc convex surface, 15. through hole, 16. limit countersunk hole,

[0049] 17. Limit column, 18. Mounting hole, 19. Limit block, 20. Sleeve. DETAILED DESCRIPTION

[0050] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limitations on the utility model. In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the utility model.

[0051] like Figures 1 to 9As shown, a rope reel with a protective structure of the present embodiment comprises a mounting shell 1, a rope reel 2 and a driving mechanism 3. The rope reel 2 and the driving mechanism 3 are mounted in the mounting shell 1. The rope reel 2 is used for winding a sling rope (not shown in the figure). The driving mechanism 3 is used for driving the rope reel 2 to rotate so as to extend and retract the sling rope by controlling the forward and reverse rotation of the rope reel 2. In addition, a fixed bracket 4 is fixedly mounted in the mounting shell 1, and a movable bracket 5 is movably mounted on the fixed bracket 4. The first shaft body 6 and the second shaft body 7 are respectively installed at the front and rear ends of the movable bracket 5. The first shaft body 6 is repositionably pivoted on the fixed bracket 4. Optionally, in order to realize the repositionable installation of the first shaft body 6, a spring (such as a coil spring) can be connected between the first shaft body 6 and the fixed bracket 4, so that under the action of the resetting force of the spring, the first shaft body 6 and the movable bracket 5 can be automatically reset. When the movable bracket 5 is deflected due to external force, the spring is simultaneously compressed and accumulates elastic potential energy. When the external force on the movable bracket 5 is weakened, under the resetting action of the spring force, the first shaft body 6 and the movable bracket 5 can be automatically reset to the initial position. Specifically, a sleeve 20 extending laterally is integrally formed on the fixed bracket 4, and the first shaft body 6 of the movable bracket 5 is repositionably pivoted in the sleeve 20 through the spring, thereby ensuring that the movable bracket 5 is smoothly pivoted on the fixed bracket 4. A roller 8 is rotatably sleeved on the second shaft 7. During the process of retracting and releasing the suspension rope, the roller 8 is used to support the suspension rope upward. A first induction switch 9 is arranged on the fixed bracket 4. The first induction switch 9 can be a variety of switches in the prior art, such as a photoelectric switch, a proximity switch, a pressure switch, etc. The first induction switch 9 is used to trigger the drive mechanism 3 to stop (which can be achieved by existing circuit technology, which will not be repeated here). When in use, the first induction switch 9 in the untriggered state is at a certain distance from the bottom of the movable bracket 5 and corresponds to the bottom of the roller 8. When the load force on the suspension rope increases to a certain extent, the roller 8 and the free end of the movable bracket 5 deflect downward and touch the first induction switch 9 to trigger the first induction switch 9 to stop the operation of the drive mechanism 3.

[0052] It can be understood that the rope reel of the present embodiment is additionally provided with a fixed bracket 4 and a movable bracket 5 in the mounting shell 1. The fixed bracket 4 is fixedly mounted in the mounting shell 1, and one end of the movable bracket 5 is pivotally connected to the fixed bracket 4 through a first axis 6 so that the movable bracket 5 can rotate up and down around the first axis 6. The free end of the movable bracket 5 is rotatably sleeved with a roller 8 for supporting the lifting rope upward. Therefore, the load force on the lifting rope can be transmitted to the movable bracket 5 through the roller 8. When the load force on the lifting rope is too large, the free end of the movable bracket 5 can deflect downward accordingly. When the load force on the lifting rope is reduced, the movable bracket 5 can be reset upward around the first axis 6. At the same time, the fixed bracket 4 is provided with a first induction switch 9 for triggering the driving mechanism 3 to stop. When the first induction switch 9 is triggered, the driving mechanism 3 can be controlled to stop operating through the conventional circuit method of the prior art. When the first induction switch 9 is not triggered, the bottom of the movable bracket 5 is a certain distance away from the first induction switch 9, and the first induction switch 9 corresponds to the bottom of the roller 8, that is, at this time, the free end of the movable bracket 5 does not contact the first induction switch 9 below. However, when the load force on the suspension rope increases to a certain extent, the load force on the suspension rope is transmitted to the movable bracket 5 through the roller 8, driving the free end of the movable bracket 5 to deflect downward and touch the first induction switch 9. At this time, the first induction switch 9 can be triggered to stop the operation of the driving mechanism 3, thereby realizing overweight protection of the rope reel and the suspension rope, and avoiding the risk of breakage due to excessive load on the suspension rope.

[0053] Furthermore, a second induction switch 10 is installed on the fixed bracket 4. The second induction switch 10 is used to trigger the rope reel to start the anti-loosening function. When the second induction switch is not triggered, the second induction switch 10 keeps contacting the bottom of the movable bracket 5 upward, which is equivalent to the bottom of the free end of the movable bracket 5 keeping pressing the second induction switch 10 downward. The second induction switch 10 subjected to continuous contact pressure is in an untriggered state, that is, the rope reel does not start the anti-loosening function at this time. If the rope with the object mounted on it encounters an obstacle during the descent process, the rope will become loose due to the loss of obvious load force under the support of the obstacle on the suspended object. That is, when the load force on the rope is reduced to a certain extent, the free end of the movable bracket 5 deflects upward and leaves the second induction switch 10. At this time, the second induction switch 10 is subjected to the disappearance of continuous contact pressure and is triggered synchronously. The second induction switch 10 is triggered by this structure to start the anti-loosening function of the rope reel, so as to avoid the rope reel continuing to lower the rope when encountering obstacles, and ensure the normal operation of the rope reel.

[0054] It should be noted that the above-mentioned anti-loosening function can be achieved through a variety of control methods of existing technologies. For example, when the load force on the rope is reduced to a certain extent (that is, if the rope with an object mounted on it encounters an obstacle during the descent process), the second induction switch 10 triggers the drive mechanism 3 to stop working to prevent the rope from being lowered further, or it can trigger the drive mechanism 3 to drive the rope roller 2 to reverse and retract the rope upward. Both methods can realize the anti-loosening function of the rope reel and protect the normal operation of the rope reel.

[0055] As a specific structure of the above scheme, the second induction switch includes a photoelectric switch 11 and a movable block 12. The movable block 12 is resettable and movably arranged on the fixed bracket 4. Similarly, in order to realize the resettable installation of the movable block 12, a spring can be arranged between the movable block 12 and the fixed bracket 4. Under the reset force of the spring, the movable block 12 can be automatically reset. When the movable block 12 is displaced due to external force, the spring is simultaneously compressed and accumulates elastic potential energy. When the external force on the movable block 12 is weakened, the movable block 12 can be automatically reset to the initial position under the reset action of the spring force. On the other hand, in the present embodiment, when the photoelectric switch 11 is not triggered, the bottom of the movable bracket 5 presses downward on the movable block 12 and drives the movable block 12 to keep cutting into the light sensing area of ​​the photoelectric switch 11. At this time, the spring between the movable block 12 and the fixed bracket 4 is also compressed and accumulates elastic potential energy. When the load force on the lifting rope is reduced to a certain extent (that is, if the lifting rope with the object mounted encounters an obstacle during the descent process), the free end of the movable bracket 5 deflects upward and leaves the movable block 12. At this time, under the resetting action of the spring, the movable block 12 is driven to reset and move upward and leave the light sensing area of ​​the photoelectric switch 11, so that the photoelectric switch 11 generates an electrical signal, triggering the photoelectric switch 11 to turn on the anti-loosening function of the rope reel.

[0056] Optionally, the number of photoelectric switches 11 is several. In the present embodiment, the number of photoelectric switches 11 is two. The two photoelectric switches 11 are respectively formed with a light sensing area. Of course, a photoelectric switch 11 with multiple light sensing areas in the prior art can also be selected. Two baffles 13 are integrally formed at the bottom of the movable block 12. The two baffles 13 correspond to the light sensing areas of the photoelectric switch 11 downward. The baffles 13 move in and out of the light sensing area of ​​the photoelectric switch 11 with the lifting and lowering of the movable block 12. That is, the rise and fall of the movable block 12 can cause the baffles 13 to leave and enter the light sensing area of ​​the photoelectric switch 11. In this embodiment, when the photoelectric switch 11 is not triggered, the movable block 12 is in a lower position under the pressure of the movable bracket 5, and the baffle 13 is also kept in the light sensing area of ​​the photoelectric switch 11. When the load force on the rope is reduced to a certain extent (i.e., when the rope with the object on it encounters an obstacle during the descent process), the movable block 12 automatically resets and moves upward due to the loss of the pressure of the movable bracket 5, and the baffle 13 is also synchronously moved away from the light sensing area of ​​the photoelectric switch 11, so that the light sensing area of ​​the photoelectric switch 11 produces a change in the light signal, thereby allowing the photoelectric switch 11 to generate an electrical signal, so that the photoelectric switch 11 can be successfully triggered. It should be noted that by having multiple baffles 13 enter and exit the light sensing areas of multiple photoelectric switches 11 respectively, it can be ensured that the anti-loosening function of the rope reel can be turned on only after multiple photoelectric switches 11 are triggered. This method can avoid affecting the normal opening of the anti-loosening function of the rope reel due to the failure of a single photoelectric switch 11.

[0057] In addition, in order to allow the bottom of the movable bracket 5 to more stably contact the top of the movable block 12, the top of the movable block 12 of this embodiment is integrally formed with an arc-shaped convex surface 14. When the photoelectric switch 11 is not triggered, the bottom of the movable bracket 5 presses downward on the arc-shaped convex surface 14.

[0058] Specifically, two through holes 15 are formed on the fixed bracket 4, and each baffle 13 is respectively inserted into each through hole 15. Therefore, under the limiting effect of each through hole 15, each baffle 13 can move up and down stably, thereby ensuring the stable lifting and lowering of the movable block 12.

[0059] Specifically, a limit countersunk hole 16 is provided on the fixed bracket 4, and a limit column 17 is integrally formed at the bottom of the movable block 12. The limit column 17 slides in the limit countersunk hole 16, so the limit countersunk hole 16 can be used to control the descending stroke of the limit column 17. On the other hand, the spring between the movable block 12 and the fixed bracket 4 can also be installed in the limit countersunk hole 16 to ensure the stable installation of the spring.

[0060] Specifically, the fixing bracket 4 is provided with a mounting hole 18. In this embodiment, there are two mounting holes 18 and two first induction switches 9. Each first induction switch 9 is respectively sleeved in each mounting hole 18 to ensure the stable installation of the first induction switch 9 on the fixing bracket 4. In addition, two opposite sides of the inner wall of the mounting hole 18 are respectively integrally formed with a limiting block 19, and each limiting block 19 is respectively inserted into the side wall of the first induction switch 9. This structure can prevent the first induction switch 9 from rotating, and further ensure the stable installation of the first induction switch 9 on the fixing bracket 4.

[0061] Specifically, combined Fig.10 and Fig.11 As shown, the driving mechanism 3 of this embodiment includes a motor 31, a first driven gear 32, a second driven gear 33 and a rope winding roller gear 34. The rope winding roller gear 34 is coaxially fixed to one end of the rope winding roller 2. A worm 35 is coaxially arranged on the power output shaft of the motor 31. A turbine 36 is coaxially fixed to one end of the first driven gear 32. When assembled, the worm 35 and the turbine 36 are meshed with each other, the first driven gear 32 and the second driven gear 33 are meshed with each other, and the second driven gear 33 and the rope winding roller gear 34 are meshed with each other. When the rope reel is working, the motor 31 can drive the turbine 36 to rotate through the worm gear 35, so as to realize the rotation of the first driven gear 32, and then the first driven gear 32 can drive the second driven gear 33 to rotate. Since a rope reel gear 34 is fixed to one end of the rope reel 2, the second driven gear 33 can drive the rope reel gear 34 to rotate through engagement and then drive the rope reel 2 to rotate. Therefore, the motor 31 can control the rotation of the rope reel 2, realize the control of the lowering and recovery of the suspension rope, and make the motion mechanism inside the rope reel more stable.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A rope reel with a protective structure, comprising a mounting shell (1), wherein a rope reel (2) for winding a suspension rope and a driving mechanism (3) for driving the rope reel (2) to rotate are arranged in the mounting shell (1), characterized in that: A fixed bracket (4) and a movable bracket (5) are also provided in the installation shell (1); The movable bracket (5) is provided with a first shaft (6) and a second shaft (7) at opposite ends thereof; the first shaft (6) is pivotally connected to the fixed bracket (4) in a repositionable manner, and a roller (8) for supporting the suspension rope upward is rotatably sleeved on the second shaft (7); The fixed bracket (4) is provided with a first induction switch (9) for triggering the driving mechanism (3) to stop; Wherein, the first induction switch (9) in an untriggered state is at a certain distance from the bottom of the movable bracket (5) and corresponds to the bottom of the roller (8); When the load force on the suspension rope increases to a certain extent, the roller (8) together with the free end of the movable bracket (5) deflects downward and touches the first sensing switch (9), thereby triggering the first sensing switch (9) to stop the operation of the driving mechanism (3).

2. The rope reel with a protective structure according to claim 1, characterized in that: The fixing bracket (4) is also provided with a second induction switch (10) for triggering the rope reel to start the anti-loosening function; Wherein, the second induction switch (10) in an untriggered state contacts upwardly with the bottom of the movable bracket (5); When the load force on the suspension rope is reduced to a certain extent, the free end of the movable bracket (5) deflects upward and leaves the second induction switch (10), so as to trigger the second induction switch (10) to activate the anti-loosening function of the rope reel.

3. The rope reel with a protective structure according to claim 2, characterized in that: The second inductive switch comprises a photoelectric switch (11) and a movable block (12); The movable block (12) is movably arranged on the fixed bracket (4) in a repositionable manner; Wherein, when the photoelectric switch (11) is not triggered, the bottom of the movable bracket (5) presses downward on the movable block (12) and drives the movable block (12) to keep cutting into the light sensing area of ​​the photoelectric switch (11); When the load force on the suspension rope is reduced to a certain extent, the free end of the movable bracket (5) deflects upward and leaves the movable block (12), so that the movable block (12) is reset and moves upward and leaves the light sensing area of ​​the photoelectric switch (11), thereby triggering the photoelectric switch (11) to start the anti-loosening function of the rope reel.

4. The rope reel with a protective structure according to claim 3, characterized in that: The number of the photoelectric switches (11) is a plurality or the photoelectric switches (11) are formed with a plurality of light sensing areas; The bottom of the movable block (12) is integrally formed with a plurality of baffles (13) which correspond downward to the respective light sensing areas of the photoelectric switch (11); The baffle (13) moves in and out of the light sensing area of ​​the photoelectric switch (11) as the movable block (12) moves up and down.

5. The rope reel with a protective structure according to claim 3, characterized in that: The top of the movable block (12) is integrally formed with an arc-shaped convex surface (14), and when the photoelectric switch (11) is not triggered, the bottom of the movable bracket (5) presses downward on the arc-shaped convex surface (14).

6. The rope reel with a protective structure according to claim 4, characterized in that: The fixing bracket (4) is provided with a plurality of through holes (15), and each of the baffles (13) is respectively inserted into each of the through holes (15).

7. The rope reel with a protective structure according to claim 3, characterized in that: The fixing bracket (4) is provided with a limited countersunk hole (16); A limiting column (17) is integrally formed at the bottom of the movable block (12), and the limiting column (17) is slidably fitted in the limiting counterbore (16).

8. The rope reel with a protective structure according to claim 3, characterized in that: The fixing bracket (4) is provided with a mounting hole (18), and the first induction switch (9) is sleeved in the mounting hole (18); Limit blocks (19) are integrally formed on opposite sides of the inner wall of the mounting hole (18), and each of the limit blocks (19) is inserted into a side wall of the first induction switch (9).

9. The rope reel with a protective structure according to any one of claims 1 to 8, characterized in that: A sleeve (20) extending laterally is integrally formed on the fixed bracket (4), and the first shaft (6) of the movable bracket (5) is pivotally connected in the sleeve (20) in a resetting manner.

10. The rope reel with a protective structure according to any one of claims 1 to 8, characterized in that: The driving mechanism (3) comprises a motor (31), a first driven gear (32), a second driven gear (33) and a rope winding roller gear (34); The rope winding roller gear (34) is coaxially fixed to one end of the rope winding roller (2); A worm (35) is coaxially arranged on the power output shaft of the motor (31); A turbine (36) is coaxially fixed to one end of the first driven gear (32); The worm (35) and the turbine (36) are meshed with each other, the first driven gear (32) and the second driven gear (33) are meshed with each other, and the second driven gear (33) and the rope winding roller gear (34) are meshed with each other.

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