Automatic take-up cable reel device with anti-drop locking structure

Abstract

The application discloses an automatic take-up cable reel device with a anti-off locking structure and belongs to the technical field of cable reels. The brake mechanism is arranged. The cam is rotated. Two protruding parts of the cam are respectively in abutment with a first sliding table and a second sliding table. The first sliding table and the second sliding table can move horizontally along the first sleeve rod in the axial direction. The first sliding table drives the third sliding table and the first brake disc to move through the fixed rod. The first brake disc is attached to one side of the brake pad. Meanwhile, the second sliding table drives the movable rod to slide on the surface of the fixed rod and drives the second brake disc to be attached to the other side of the brake pad. The second brake disc and the first brake disc apply the brake force to the brake pad through the friction force, and the active locking of the take-up reel is completed.

Description

Technical Field

[0001] This invention relates to the field of cable reel technology, and in particular to an automatic cable reel device with an anti-detachment locking structure. Background Technology

[0002] In the production process of wires and cables, cable reels are reels that provide the function of winding wires and cables for industrial and mining enterprises. They are widely used in oil fields and mines, construction, machinery manufacturing, port terminals and road and bridge construction, etc. They are usually composed of support frames, winding frames and locking components. The anti-derailment locking structure of the cable reel is designed to prevent the cable reel from rotating accidentally and ensure safe use. Most existing locking structures are passive locking systems that automatically maintain the locked state through the inherent characteristics of mechanical structures or elastic elements without continuous external operation or active control. The locked state does not depend on continuous external energy input, and the locking action is automatically completed by the pre-designed characteristics of the mechanical structure or elastic element. After locking, the device can maintain a stable state until it is subject to external intervention. However, in actual use, passive locking may fail due to spring fatigue, breakage, or weakening of elastic force, which may cause the locking rod to fail to stop against the inner wall of the cable reel, or the fixing seat, locking rod, or limiting component to deform or break, resulting in loss of locking function, mismatch between elastic force and load, or unreasonable locking point position, which may lead to accidental unlocking. In such cases, active locking device needs to be activated immediately. If manual intervention is used through a manual brake, it is mostly only used to fix the cable reel and cannot control the cable release speed to allow the cable that has been accidentally released to continue to be lowered to a safe position. Summary of the Invention

[0003] The purpose of this invention is to address the problem that, in practical use, passive locking devices often fail due to the failure of elastic elements, damage to mechanical structures, or design defects, and the active locking devices are mostly only used to fix the cable reel, unable to control the cable release speed to allow the accidentally released cable to continue to be lowered to a safe position. Therefore, this invention proposes an automatic cable reel device with an anti-detachment locking structure.

[0004] To achieve the above objectives, the present invention employs the following technology: an automatic cable reel device with an anti-disengagement locking structure: The cable reel body includes a frame and a take-up reel rotatably mounted on the frame. The frame is equipped with a passive self-locking device that locks the take-up reel after the cable is pulled out. The cable reel body also includes a fixed seat mounted on the frame and passing through the middle of the take-up reel. A braking mechanism that actively brakes the take-up reel is installed on the fixed seat. The braking mechanism includes a fixing assembly fixedly installed inside the take-up reel. The fixing assembly is connected to a first slide and a second slide located on both sides through a through-type reset mechanism. A second brake disc is installed on the second slide, and the first slide is connected to the first brake disc through the reset mechanism. The fixed assembly is rotatably provided with a cam that abuts against the first slide and the second slide. The cam is provided with a hinge shaft. The fixed base is provided with a drive mechanism connected to the hinge shaft. The hinge shaft cooperates with the cam to convert the reciprocating linear motion applied by the drive mechanism into rotational motion. A brake pad is provided on the inner wall of the take-up reel. The brake pad is located between the second brake disc and the first brake disc. When the cam rotates, it pushes the first slide and the second slide to move back and forth, so that the second brake disc and the first brake disc periodically contact the brake pad to apply braking force.

[0005] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The fixing kit has at least one rotating groove, and the cam is rotatably embedded in the rotating groove. Both the first slide and the second slide have abutment grooves that cooperate with the cam. When the cam protrusion contacts the abutment groove, the second brake disc and the first brake disc begin to apply braking force to the brake pads. The braking force on the brake pads is greatest when the cam protrusion reaches the middle of the abutment groove.

[0006] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The take-up reel has a positioning shaft in the middle, and the first sleeve rod is slidably installed along the positioning shaft without relative rotation.

[0007] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The hinge shaft is mounted on the cam via a pitch-changing mechanism. The pitch-changing mechanism includes a first groove formed on the cam, a threaded rod rotatably disposed in the first groove, and a first slider connected to the hinge shaft is fitted onto the surface of the threaded rod.

[0008] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The pitch mechanism further includes an adjusting shaft rotatably disposed in a rotating groove, and a first bevel gear rotatably disposed on the adjusting shaft; A first bevel gear is fixedly sleeved on the adjusting shaft, and a second bevel gear that meshes with the first bevel gear is installed on the threaded rod.

[0009] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The pitch-changing mechanism includes an adjusting shaft fixedly installed in a rotating groove, a first bevel gear fixedly installed on the adjusting shaft, and a cam rotatably sleeved on the adjusting shaft; A first bevel gear is fixedly sleeved on the adjusting shaft, and a second bevel gear that meshes with the first bevel gear is installed on the threaded rod.

[0010] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The reset mechanism includes a fixed rod installed on the first slide, the fixed rod being connected to the first brake disc via a third slide sleeved on the first sleeve, a movable rod being installed on the second slide through which the fixed rod passes, and a through hole for the fixed rod to pass through in the middle of the fixing kit.

[0011] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The fixed rod has a receiving groove in the middle, and at least one through groove is provided on the surface of the receiving groove. A pressure groove that is slidably embedded in the receiving groove and connected to the movable rod is provided. A spring is installed inside the receiving groove, and the two ends of the spring are connected to the receiving groove and the pressure groove, respectively.

[0012] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The drive mechanism includes an electric push rod and a second set of rods mounted on a fixed base, and a second slider is connected to the output end of the electric push rod. The second sleeve rod is sleeved on the first sleeve rod, and the surface of the second sleeve rod is provided with a second sliding groove. The second slider is slidably embedded in the second sliding groove, and the second slider is hinged to the hinge shaft through a hinge rod.

[0013] A further description of an automatic cable reel device with an anti-disengagement locking structure as described above: The end of the second sleeve rod is provided with a limiting plate that abuts against the first slide after the maximum movement distance.

[0014] One of the above technical solutions has the following advantages or beneficial effects: 1. Through the braking mechanism, the cam is rotated, and the two protruding parts of the cam abut against the first slide and the second slide respectively, so that the first slide and the second slide can move horizontally along the axis of the first sleeve rod. The first slide drives the third slide and the first brake disc to move through the fixed rod, so that the first brake disc is in contact with one side of the brake pad. At the same time, the second slide drives the movable rod to slide on the surface of the fixed rod, and drives the second brake disc to be in contact with the other side of the brake pad. The second brake disc and the first brake disc apply braking force to the brake pad through friction, and the take-up reel actively locks. 2. Through the reset mechanism, when it is necessary to continue lowering the cable that has been accidentally released to a safe position, the cam rotates periodically. When the first and second slides move to the sides under the push of the rotating cam, the second slide drives the pressure groove to slide inside the receiving groove through the movable rod and squeeze the spring. At the same time, the first slide drives the fixed rod to move and squeeze the spring from the other side through the receiving groove. The spring undergoes elastic deformation. When the protrusion of the cam no longer contacts the first and second slides during the rotation, the elastic deformation of the spring recovers and pulls the first and second slides to reset. The first and second slides re-fit with the fixing kit. The cam can push the first and second slides to move back and forth, so that the second brake disc and the first brake disc periodically contact the brake pad to apply braking force. Periodic braking controls the lowering speed of the cable within a safe range, ensuring that the cable lands safely. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of an automatic cable reel device with an anti-disengagement locking structure is shown. Figure 2 A three-dimensional cross-sectional view of an automatic cable reel device with an anti-disengagement locking structure is shown. Figure 3 A frontal cross-sectional view of the cable reel body is shown. Figure 4 A three-dimensional structural schematic diagram of the braking mechanism in the released state is shown; Figure 5 A three-dimensional structural schematic diagram of the braking mechanism in the braking state is shown; Figure 6 A three-dimensional structural schematic diagram of the brake pad is shown; Figure 7 A three-dimensional structural diagram of the fixing kit is shown; Figure 8 A three-dimensional structural schematic diagram of the second slide and the second brake disc is shown; Figure 9 A three-dimensional structural diagram showing the connection between the first slide and the first brake disc via a reset mechanism is shown. Figure 10 A three-dimensional structural diagram showing the connection between the first and second slides via a reset mechanism is shown. Figure 11 A three-dimensional cross-sectional structural diagram of the pitch-changing mechanism is shown; Figure 12 A partial three-dimensional structural schematic diagram of the pitch-changing mechanism is shown; Figure 13 A schematic diagram of the second partial three-dimensional structure of the pitch-changing mechanism is shown; Figure 14A three-dimensional structural schematic diagram of the first structure when the position of the hinge axis is adjusted by the pitch mechanism is shown. Figure 15 A schematic diagram of the second three-dimensional structure is shown when the position of the hinge axis is adjusted by the pitch mechanism. Figure 16 A three-dimensional structural schematic diagram of the reset mechanism is shown; Figure 17 A first three-dimensional cross-sectional structural schematic diagram of the reset mechanism is shown; Figure 18 A schematic diagram of the second three-dimensional cross-sectional structure of the reset mechanism is shown; Figure 19 A three-dimensional structural schematic diagram of the drive mechanism is shown; Figure 20 A schematic diagram of the three-dimensional disassembled structure of the drive mechanism is shown; Figure 21 This shows a first three-dimensional structural diagram of the drive mechanism driving the cam to rotate; Figure 22 A second three-dimensional structural diagram is shown when the drive mechanism drives the cam to rotate.

[0016] Legend: 10. Cable reel body; 11. Frame; 12. Take-up reel; 121. Positioning shaft; 122. Inspection port; 13. Passive self-locking component; 14. Fixing base; 20. Braking mechanism; 21. First sleeve rod; 22. Fixing assembly; 221. Rotating groove; 222. Through hole; 23. Cam; 231. Abutment groove; 24. First slide table; 25. Second slide table; 26. Second brake disc; 27. First brake disc; 271. Third slide table; 28. Hinge shaft; 29. ​​Brake pad; 291. Heat dissipation hole; 30. Pitch-changing mechanism; 31. First slide groove; 311. Guide rail; 32. Threaded rod; 33. First slider; 331. Guide groove; 34. Adjusting shaft; 35. First bevel gear; 36. Second bevel gear; 40. Reset mechanism; 41. Movable rod; 42. Pressing groove; 43. Fixed rod; 44. Receiving groove; 45. Through groove; 46. Spring; 50. Drive mechanism; 51. Electric actuator; 52. Second sleeve rod; 521. Limiting plate; 53. Second slide groove; 54. Second slider; 55. Hinge rod. Detailed Implementation

[0017] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, an automatic cable reel device with an anti-disengagement locking structure. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] To address the issue that passive locking mechanisms often fail in practical use due to elastic element failure, mechanical structure damage, or design flaws, and that active locking devices, which are mostly only used to fix the cable reel, cannot control the cable release speed to prevent accidental rotation and release, thus ensuring the cable continues to descend to a safe position, this invention proposes an automatic cable reel device with an anti-disengagement locking structure. Figure 1 - Figure 22 As shown: The cable reel body 10 includes a frame 11 and a take-up reel 12 rotatably mounted on the frame 11. The frame 11 is provided with a passive self-locking member 13 that locks the take-up reel 12 after the cable is pulled out. The cable reel body 10 also includes a fixed seat 14 mounted on the frame 11 and passing through the middle of the take-up reel 12. A braking mechanism 20 that actively brakes the take-up reel 12 is mounted on the fixed seat 14. Braking mechanism 20 includes a fixing kit 22 fixedly installed in the take-up reel 12. The fixing kit 22 is connected to a first slide 24 and a second slide 25 located on both sides through a through-through reset mechanism 40. A second brake disc 26 is installed on the second slide 25. The first slide 24 is connected to a first brake disc 27 through the reset mechanism 40. like Figure 8 - Figure 10 , Figure 16 - Figure 18 As shown, the reset mechanism 40 includes a fixed rod 43 mounted on the first slide 24. The fixed rod 43 is connected to the first brake disc 27 through a third slide 271 sleeved on the first sleeve 21. A movable rod 41 through which the fixed rod 43 passes is mounted on the second slide 25. A through hole 222 for the fixed rod 43 to pass through is provided in the middle of the fixing kit 22. like Figure 4 - Figure 6As shown, a cam 23 is rotatably mounted on the fixed assembly 22, abutting against the first slide 24 and the second slide 25. A hinge shaft 28 is mounted on the cam 23. A brake pad 29 is mounted on the inner wall of the take-up reel 12. The brake pad 29 is located between the second brake disc 26 and the first brake disc 27. By rotating the cam 23, the two protruding parts of the cam 23 abut against the first slide 24 and the second slide 25 respectively, allowing the first slide 24 and the second slide 25 to move horizontally along the axial direction of the first sleeve rod 21. The first slide 24 drives the third slide 271 and the first brake disc 27 to move through the fixed rod 43, so that the first brake disc 27 fits against one side of the brake pad 29. At the same time, the second slide 25 drives the movable rod 41 to slide on the surface of the fixed rod 43, and drives the second brake disc 26 to fit against the other side of the brake pad 29. The second brake disc 26 and the first brake disc 27 apply braking force to the brake pad 29 through friction, and the take-up reel 12 is actively locked.

[0019] Preferred, such as Figure 7 and Figure 10 As shown, the fixed assembly 22 has at least one rotating groove 221. The cam 23 is rotatably embedded in the rotating groove 221. The first slide 24 and the second slide 25 are both provided with abutting grooves 231 that cooperate with the cam 23. When the protrusion of the cam 23 contacts the abutting groove 231, the second brake disc 26 and the first brake disc 27 begin to apply braking force to the brake pad 29. When the protrusion of the cam 23 reaches the middle of the abutting groove 231, the braking force on the brake pad 29 is the greatest. At this time, the rotation of the cam 23 is stopped and locked to maintain the braking state without the need for continuous power input.

[0020] When it is necessary to continue lowering the cable that has been accidentally released to a safe position, the cam 23 is rotated periodically. The cam 23 can push the first slide 24 and the second slide 25 to move back and forth, so that the second brake disc 26 and the first brake disc 27 periodically contact the brake pad 29 to apply braking force. Periodic braking controls the lowering speed of the cable within a safe range, ensuring that the cable lands safely. By adjusting the rotation frequency of the cam 23, the lowering speed of the cable can be controlled. When the cam 23 rotates at high frequency, the cable decelerates rapidly until it stops completely, and when it rotates at low frequency, the cable movement speed is stably controlled.

[0021] Furthermore, in order to coordinate with the periodic rotation of cam 23, such as Figure 17 and Figure 18 As shown, a receiving groove 44 is provided in the middle of the fixed rod 43, and at least one through groove 45 is provided on the surface of the receiving groove 44. A pressing groove 42 that is slidably embedded in the receiving groove 44 and connected to the movable rod 41 is provided in the through groove 45. A spring 46 is provided in the receiving groove 44, and the two ends of the spring 46 are respectively connected to the receiving groove 44 and the pressing groove 42. With this design, when the first slide 24 and the second slide 25 move to the sides respectively under the push of the rotating cam 23, the second slide 25 drives the pressure groove 42 to slide inside the receiving groove 44 through the movable rod 41 and squeeze the spring 46. At the same time, the first slide 24 drives the fixed rod 43 to move and squeeze the spring 46 from the other side through the receiving groove 44. The spring 46 undergoes elastic deformation. When the protrusion of the cam 23 no longer contacts the first slide 24 and the second slide 25 during the rotation, the elastic deformation of the spring 46 is restored and pulls the first slide 24 and the second slide 25 to reset. The first slide 24 and the second slide 25 are then re-fitted with the fixing kit 22.

[0022] Preferred, such as Figure 2 and Figure 3 As shown, a positioning shaft 121 is provided in the middle of the take-up reel 12. The first sleeve rod 21 is slidably installed along the axial direction of the positioning shaft 121 without relative rotation. The positioning shaft 121 only serves a positioning function, making the axis of the first sleeve rod 21 coincide with that of the positioning shaft 121. When the take-up reel 12 drives the positioning shaft 121 to rotate, the first sleeve rod 21 does not rotate with the positioning shaft 121, ensuring that the axis positions of the second brake disc 26, the first brake disc 27 and the brake pad 29 installed on the first sleeve rod 21 coincide. The braking pressure can be evenly distributed on the contact surface of the second brake disc 26, the first brake disc 27 and the brake pad 29, avoiding the situation where the pressure on one side of the brake pad 29 is too high and the pressure on the other side is too low due to axis misalignment, which could lead to unilateral wear and local overheating. like Figure 6 As shown, in order to further improve the heat dissipation effect of the brake pad 29, a number of heat dissipation holes 291 are equidistantly arranged around the contact position between the brake pad 29 and the second brake disc 26 and the first brake disc 27.

[0023] like Figure 11 - Figure 15 As shown, the hinge shaft 28 is mounted on the cam 23 via a pitch-changing mechanism 30. The pitch-changing mechanism 30 includes a first slide groove 31 formed on the cam 23. A threaded rod 32 is rotatably disposed in the first slide groove 31, and a first slider 33 connected to the hinge shaft 28 is fitted onto the surface of the threaded rod 32. To ensure the stability of the sliding of the first slider 33, such as Figure 11 and Figure 12 As shown, guide grooves 331 are provided on both sides of the first slider 33, and guide rails 311 that fit into the guide grooves 331 are provided on the inner wall of the first slider 33. Under the constraint of the guide rails 311 and the guide grooves 331, the first slider 33 can only move horizontally under the drive of the rotation of the threaded rod 32.

[0024] As a first embodiment of this application, the pitch mechanism 30 further includes an adjusting shaft 34 rotatably disposed in the rotating groove 221, a first bevel gear 35 rotatably disposed on the adjusting shaft 34, the first bevel gear 35 being fixedly sleeved on the adjusting shaft 34, and a second bevel gear 36 meshing with the first bevel gear 35 being mounted on the threaded rod 32. By rotating the adjusting shaft 34 while restricting the position of the cam 23, the first bevel gear 35 drives the threaded rod 32 to rotate through the second bevel gear 36. The threaded rod 32 drives the first slider 33 to slide under the restriction of the first sliding groove 31. The first slider 33 drives the hinge shaft 28 to move and change the distance with the adjusting shaft 34, thereby changing the eccentricity of the hinge shaft 28. Under the premise that the speed of the reciprocating linear motion applied by the drive mechanism 50 remains constant, when the eccentricity increases from small to large, the single motion cycle of the drive mechanism 50 is prolonged, and the time required for the protrusion of the cam 23 to reach the middle of the abutment groove 231 and for the brake pad 29 to receive the maximum braking force increases. In this state, the brake pad 29 has a slow braking response and a gentle braking force, avoiding damage to the second brake disc 26, the first brake disc 27, and the brake pad 29 caused by frequent rapid braking. This is suitable for scenarios that require frequent starts and stops. When the eccentricity decreases from large to small, the single motion cycle of the drive mechanism 50 is shortened, and the time required for the protrusion of the cam 23 to reach the middle of the abutment groove 231 and for the brake pad 29 to receive the maximum braking force is shortened. In this state, the brake pad 29 has a faster braking response and a more concentrated braking force, which is suitable for situations where the passive self-locking component 13 fails, resulting in excessively high wire release speed and the need for emergency braking. Through this design, the operator can quickly adjust the braking rhythm according to actual needs, avoiding damage caused by excessive braking or safety hazards caused by excessively slow braking.

[0025] As a second embodiment of this application, the pitch mechanism 30 includes an adjusting shaft 34 fixedly disposed in the rotating groove 221, a first bevel gear 35 fixedly mounted on the adjusting shaft 34, a cam 23 rotatably sleeved on the adjusting shaft 34, a first bevel gear 35 fixedly sleeved on the adjusting shaft 34, and a second bevel gear 36 meshing with the first bevel gear 35 mounted on the threaded rod 32. Through this design, the drive mechanism 50 drives the cam 23 to rotate under the restriction of the adjusting shaft 34 via the hinge shaft 28. During the rotation, the cam 23 drives the second bevel gear 36 to mesh with the first bevel gear 35. The second bevel gear 36 can drive the threaded rod 32 to rotate. As the threaded rod 32 rotates with the second bevel gear 36, it drives the first slider 33 to slide in the first slide groove 31 through its own rotation, so as to dynamically adjust the position of the hinge shaft 28. This allows the eccentricity of the hinge shaft 28 to gradually change during the braking process. By matching the needs of different cable laying stages through dynamic eccentricity, the braking demand is lower when laying at a constant speed. At this time, the maximum eccentricity is used to extend the braking cycle, effectively reducing the peak impact force while protecting the second brake disc 26, the first brake disc 27, and the brake pad 29. As the cable is continuously laid out, the speed of cable laying is slowed down periodically by the brake pads 29 braked by the rotating cam 23. At the same time, the hinge shaft 28 moves under the cooperation of the first bevel gear 35 and the second bevel gear 36, causing the eccentricity to gradually decrease. When the cable laying is about to end, the eccentricity is adjusted to the minimum to achieve rapid braking and positioning. It should be noted that due to the change in eccentricity, the stroke length of the output end of the electric actuator 51 needs to be adjusted at any time for matching, but the speed remains unchanged.

[0026] Preferably, the take-up reel 12 has an inspection port 122 for adjusting the eccentricity of the hinge shaft 28.

[0027] In order to drive cam 23 to rotate, such as Figure 20 - Figure 22 As shown, a drive mechanism 50 connected to a hinge shaft 28 is provided on the fixed base 14. The drive mechanism 50 includes an electric push rod 51 and a second sleeve rod 52 mounted on the fixed base 14. A second slider 54 is connected to the output end of the electric push rod 51. The second sleeve rod 52 is sleeved on the first sleeve rod 21, and a second groove 53 is provided on the surface of the second sleeve rod 52. The second slider 54 is slidably embedded in the second groove 53. The second slider 54 is hinged to the hinge shaft 28 through a hinge rod 55. By activating the electric actuator 51, the output end of the electric actuator 51 pushes the second slider 54 to move horizontally reciprocally along the length of the second slide groove 53. During the movement, the second slider 54 pushes and pulls the hinge shaft 28 through the hinge rod 55, thereby achieving the purpose of converting the reciprocating linear motion applied by the electric actuator 51 into rotational motion through the hinge shaft 28 in cooperation with the cam 23. The cam 23 can rotate.

[0028] To avoid excessive movement of the first slide 24, such as Figure 19 As shown, the end of the second sleeve rod 52 is provided with a limiting plate 521 that abuts against the first slide 24 after the maximum movement distance.

[0029] Working principle: When the electric actuator 51 is activated, its output end pushes the second slider 54 to move horizontally back and forth along the length of the second slide groove 53. The second slider 54 pushes and pulls the hinge shaft 28 through the hinge rod 55, causing the cam 23 to rotate. When cam 23 rotates, its two protruding parts abut against the first slide 24 and the second slide 25 respectively, causing the first slide 24 and the second slide 25 to move horizontally along the axial direction of the first sleeve rod 21. The first slide 24 drives the third slide 271 and the first brake disc 27 to move via the fixed rod 43, and they fit against one side of the brake pad 29; at the same time, the second slide 25 drives the movable rod 41 to slide on the surface of the fixed rod 43, and drives the second brake disc 26 to fit against the other side of the brake pad 29. The second brake disc 26 and the first brake disc 27 apply braking force to the brake pad 29 through friction, and the take-up reel 12 is actively locked.

[0030] When the protrusion of cam 23 reaches the middle of the abutment groove 231, the braking force on brake pad 29 is at its maximum. At this time, stop rotating cam 23 and lock it to maintain the braking state without the need for continuous power input. The cam 23 rotates periodically, and the cam 23 pushes the first slide 24 and the second slide 25 to move back and forth, so that the second brake disc 26 and the first brake disc 27 periodically contact the brake pad 29 to apply braking force and control the cable lowering speed within a safe range. The cable lowering speed is controlled by adjusting the rotation frequency of cam 23. When cam 23 rotates at high frequency, the cable decelerates rapidly until it stops completely, and when it rotates at low frequency, the cable moving speed is stably controlled. When the adjusting shaft 34 is rotated while the position of cam 23 is restricted: The first bevel gear 35 on the adjusting shaft 34 drives the threaded rod 32 to rotate through the second bevel gear 36. The threaded rod 32 drives the first slider 33 to slide in the first slide groove 31. The first slider 33 drives the hinge shaft 28 to move and change the distance between it and the adjusting shaft 34, so that the eccentricity of the hinge shaft 28 changes. When the drive mechanism 50 drives the cam 23 to rotate under the constraint of the adjusting shaft 34 via the hinge shaft 28: During the rotation of cam 23, the second bevel gear 36 is driven to mesh with the first bevel gear 35. The second bevel gear 36 drives the threaded rod 32 to rotate. The threaded rod 32 drives the first slider 33 to slide in the first slide groove 31, dynamically adjusting the position of the hinge shaft 28 so that the eccentricity of the hinge shaft 28 gradually changes during the braking process. The eccentricity of the hinge shaft 28 can be adjusted through the inspection port 122 on the take-up reel 12.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who makes equivalent substitutions or modifications to the automatic cable reel device with anti-disengagement locking structure and its inventive concept according to the present invention within the scope of the technology disclosed in the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic cable reel device with an anti-detachment locking structure, comprising a cable reel body (10), the cable reel body (10) including a frame (11) and a take-up wheel (12) rotatably mounted on the frame (11), the frame (11) being provided with a passive self-locking member (13) for locking the take-up wheel (12) after the cable is pulled out, characterized in that, The cable reel body (10) also includes a fixed seat (14) set on the frame (11) and passing through the middle of the take-up reel (12), and a braking mechanism (20) for actively braking the take-up reel (12) is installed on the fixed seat (14). The braking mechanism (20) includes a fixing kit (22) fixedly installed in the take-up reel (12). The fixing kit (22) is connected to the first slide (24) and the second slide (25) located on both sides through a through-type reset mechanism (40). The second slide (25) is equipped with a second brake disc (26). The first slide (24) is connected to the first brake disc (27) through the reset mechanism (40). The fixed assembly (22) is rotatably provided with a cam (23) that abuts against the first slide (24) and the second slide (25). The cam (23) is provided with a hinge shaft (28). The fixed seat (14) is provided with a drive mechanism (50) connected to the hinge shaft (28). The hinge shaft (28) cooperates with the cam (23) to convert the reciprocating linear motion applied by the drive mechanism (50) into rotational motion. Brake pads (29) are provided on the inner wall of the take-up reel (12). The brake pads (29) are located between the second brake disc (26) and the first brake disc (27). When the cam (23) rotates, it pushes the first slide (24) and the second slide (25) to move back and forth, so that the second brake disc (26) and the first brake disc (27) periodically contact the brake pads (29) to apply braking force.

2. The automatic cable reel device with an anti-detachment locking structure according to claim 1, characterized in that, The fixing kit (22) has at least one rotating groove (221), and the cam (23) is rotatably embedded in the rotating groove (221). The first slide (24) and the second slide (25) are both provided with abutment grooves (231) that cooperate with the cam (23). When the protrusion of the cam (23) contacts the abutment groove (231), the second brake disc (26) and the first brake disc (27) begin to apply braking force to the brake pad (29). The braking force on the brake pad (29) is the greatest when the protrusion of the cam (23) reaches the middle of the abutment groove (231).

3. The automatic cable reel device with an anti-detachment locking structure according to claim 1, characterized in that, The take-up reel (12) has a positioning shaft (121) in the middle, and the first sleeve rod (21) is slidably installed along the positioning shaft (121) without relative rotation.

4. An automatic cable reel device with an anti-detachment locking structure according to claim 2, characterized in that, The hinge shaft (28) is mounted on the cam (23) via a pitch mechanism (30). The pitch mechanism (30) includes a first groove (31) opened on the cam (23). A threaded rod (32) is rotatably provided in the first groove (31), and a first slider (33) connected to the hinge shaft (28) is meshed on the surface of the threaded rod (32).

5. An automatic cable reel device with an anti-detachment locking structure according to claim 4, characterized in that, The pitch mechanism (30) further includes an adjusting shaft (34) rotatably disposed in the rotating groove (221), and a first bevel gear (35) rotatably disposed on the adjusting shaft (34); The first bevel gear (35) is fixedly sleeved on the adjusting shaft (34), and the second bevel gear (36) that meshes with the first bevel gear (35) is installed on the threaded rod (32).

6. An automatic cable reel device with an anti-detachment locking structure according to claim 4, characterized in that, The variable pitch mechanism (30) includes an adjusting shaft (34) fixedly installed in the rotating groove (221), a first bevel gear (35) fixedly installed on the adjusting shaft (34), and a cam (23) rotatably sleeved on the adjusting shaft (34); The first bevel gear (35) is fixedly sleeved on the adjusting shaft (34), and the second bevel gear (36) that meshes with the first bevel gear (35) is installed on the threaded rod (32).

7. An automatic cable reel device with an anti-detachment locking structure according to claim 1, characterized in that, The reset mechanism (40) includes a fixed rod (43) mounted on the first slide (24). The fixed rod (43) is connected to the first brake disc (27) through a third slide (271) sleeved on the first sleeve (21). A movable rod (41) through which the fixed rod (43) passes is mounted on the second slide (25). A through hole (222) for the fixed rod (43) to pass through is provided in the middle of the fixing kit (22).

8. An automatic cable reel device with an anti-detachment locking structure according to claim 7, characterized in that, The fixed rod (43) has a receiving groove (44) in the middle, and at least one through groove (45) is provided on the surface of the receiving groove (44). A pressure groove (42) that is slidably embedded in the receiving groove (44) and connected to the movable rod (41) is provided. A spring (46) is provided inside the receiving groove (44), and the two ends of the spring (46) are connected to the receiving groove (44) and the pressure groove (42) respectively.

9. An automatic cable reel device with an anti-detachment locking structure according to claim 1, characterized in that, The drive mechanism (50) includes an electric actuator (51) and a second rod (52) mounted on a fixed base (14), and a second slider (54) is connected to the output end of the electric actuator (51). The second sleeve rod (52) is sleeved on the first sleeve rod (21), and the surface of the second sleeve rod (52) is provided with a second sliding groove (53). The second slider (54) is slidably embedded in the second sliding groove (53), and the second slider (54) is hinged to the hinge shaft (28) through the hinge rod (55).

10. An automatic cable reel device with an anti-detachment locking structure according to claim 9, characterized in that, The end of the second sleeve rod (52) is provided with a limiting plate (521) that abuts against the first slide (24) after the maximum movement distance.

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