Rope skipping prevention control system of winch

Abstract

The utility model provides an anti-rope-skipping control system of a winch, the system comprises an anti-rope-skipping mechanical device and a first limit switch, the anti-rope-skipping mechanical device comprises a movable part and a fixed part, the first end part of the movable part is movably connected with the first end part of the fixed part, and the second end part of the movable part is movably connected with the first limit switch. The second end of the movable part is erected above a winding drum in the winch device, the second end of the fixed part is fixed to the winch device, and the first limiting switch is used for detecting whether the position of the movable part is raised or not. And when the position of the movable part is raised, the first limiting switch is switched off, so that the rope winding control circuit is switched off. According to the embodiment of the utility model, rope skipping of the winch can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of winches and their control technology, and in particular to an anti-slip rope control system for winches. Background Technology

[0002] Winches typically use a drum to wind a metal rope to lift heavy objects. The drum has grooves regularly engraved according to the rope's dimensions. As the load is pulled, the wire rope should align precisely and neatly within these grooves. However, in situations such as when the load sways, the rope may jump out of the grooves as the winch tightens, resulting in a disordered rope alignment. Traditional winches lack a system to prevent rope jumping, and operators often fail to detect this in time. The winch continues to operate, potentially leading to rope breakage. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model proposes a novel anti-rope-skipping control system for winches. This anti-rope-skipping control system can effectively prevent rope skipping from occurring on the winch.

[0004] Specifically, this utility model provides an anti-slip rope control system for a winch, the system comprising:

[0005] An anti-jump rope mechanical device includes a movable part and a fixed part. The first end of the movable part is movably connected to the first end of the fixed part. The second end of the movable part hangs over the drum in the winch device. The second end of the fixed part is fixed to the winch device.

[0006] A first limit switch is used to detect whether the position of the movable part has been raised. When the position of the movable part is raised, the first limit switch is opened so that the rope winding control circuit is disconnected.

[0007] According to one embodiment of the present invention, in the above-mentioned anti-slip rope control system of the winch, when the movable part is in its original position, the first limit switch is closed to connect the rope winding control circuit.

[0008] According to one embodiment of the present invention, in the above-mentioned anti-slip rope control system of the winch, the first limit switch is used to detect whether the position of the movable part is raised by a first distance, which is greater than or equal to the diameter of the rope.

[0009] According to one embodiment of the present invention, in the above-mentioned anti-slip rope control system for the winch, the system further includes a second limit switch, wherein the first limit switch and the second limit switch are respectively disposed on both sides of the movable part in its direction of movement.

[0010] The second limit switch is used to detect whether the position of the movable part is raised (relative to its original position) by a second distance, which is greater than or equal to the diameter of the rope. If the first limit switch is open and the second limit switch is open, the rope winding control circuit is disconnected; otherwise, the rope winding control circuit is in the on state.

[0011] According to one embodiment of the present invention, in the above-mentioned anti-rope skipping control system for the winch, the system further includes an anti-rope skipping control circuit, the anti-rope skipping control circuit including a first branch and a second branch connected in parallel, and the two ends of each branch are respectively connected to the positive and negative terminals of the power supply.

[0012] The first branch includes the coils of the first limit switch, the second limit switch, and the first relay, which are connected in series.

[0013] The second branch includes a pair of normally open contacts of the first relay and a coil of the second relay connected in series, and a pair of normally closed contacts of the second relay are adapted to be connected in series to the rope winding control circuit.

[0014] According to one embodiment of the present invention, in the above-mentioned anti-rope skipping control system for the winch, the anti-rope skipping control circuit further includes a third branch, the two ends of which are electrically connected to the positive and negative terminals of the power supply, and the third branch includes a pair of normally closed contacts of the first relay and a rope skipping warning light connected in series.

[0015] According to one embodiment of the present invention, in the above-mentioned anti-slip rope control system for the winch, the anti-slip rope control circuit further includes a fourth branch, the two ends of the fourth branch being electrically connected to the positive and negative terminals of the power supply, the fourth branch including a third relay, and a pair of normally closed contacts of the third relay being adapted to be connected in series to the rope release control circuit.

[0016] According to one embodiment of the present invention, in the above-mentioned anti-skid rope control system for the winch, the movable part is a U-shaped frame, the middle beam of the U-shaped frame hangs above the drum in the winch device, the fixed part includes two rods, one end of each of the two rods is movably connected to the ends of the two side beams of the U-shaped frame, and the other end of each of the two rods is fixed to the outer casing of the winch or to the mounting platform of the winch. The winch device includes the winch and the mounting platform.

[0017] According to one embodiment of the present invention, in the above-mentioned anti-skid rope control system for the winch, when the movable part is in its original position, the movable part and the fixed part are perpendicular to each other.

[0018] According to one embodiment of the present invention, in the above-mentioned anti-slip rope control system for the winch, the movable connection is a hinge connection or a hinged connection.

[0019] It should be understood that the above general description and the following detailed description of the present invention are exemplary and illustrative, and are intended to provide further explanation of the present invention as described in the claims. Attached Figure Description

[0020] The accompanying drawings are included to provide a further understanding of the present invention. They are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present invention and, together with this specification, serve to explain the principles of the present invention. In the drawings:

[0021] Figure 1 This is a structural diagram of an anti-skid rope control system for a winch according to an embodiment of the present invention.

[0022] Figure 2 This is a structural diagram of an anti-skid rope control system for a winch according to another embodiment of the present invention.

[0023] Figure 3 This is a circuit diagram of an example anti-skip rope control circuit according to the present invention.

[0024] Figure Labels

[0025] 10. Winch; 11. Electric motor; 12. Roll; 13. Gearbox; 20. Anti-jump rope mechanical device; 21. Activities Department; 22. Fixing part; 30. First limit switch; 40. Second limit switch; 50. The coil of the first relay; 51. The normally open contact of the first relay; 52. The normally closed contact of the first relay; 60. The coil of the second relay; 70. Warning lights; 80. The coil of the third relay. Detailed Implementation

[0026] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts. Furthermore, although the terminology used in this invention is selected from commonly known and used terminology, some terms mentioned in this specification may have been chosen by the applicant at his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein. Moreover, the present invention should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0027] The basic principles and preferred embodiments of this invention will be discussed in more detail with reference to the accompanying drawings. Figure 1 A structural diagram of an anti-slip rope control system for a winch according to one embodiment is shown.

[0028] like Figure 1As shown, the anti-slip rope control system of the winch mainly includes an anti-slip rope mechanical device 20 and a first limit switch 30. The anti-slip rope mechanical device 20 includes a movable part 21 and a fixed part 22. The first end of the movable part 21 is movably connected to the first end of the fixed part 22 (not shown in the figure). The second end of the movable part 21 hangs over the drum 12 in the winch device, and the second end of the fixed part 22 is fixed to the winch device. When a rope jump occurs in the winch 10, the overlap thickness of the rope on the drum 12 increases, thereby raising the position of the movable part 21. The movable connection is, for example, but not limited to, a hinge connection, a latching connection, etc.

[0029] exist Figure 1 In the illustrated embodiment, the active part 21 is Figure 1 The U-shaped frame is shown; in other embodiments, the movable part 21 may also be other shapes, such as a plate. Figure 1 As shown, the middle beam of the U-shaped frame hangs above the drum 12 in the winch 10. The fixing part 22 includes two rods, one end of which is movably connected to the ends of the two side beams of the U-shaped frame, respectively. Although not shown, it can be understood that the other ends of the two rods can be fixed to the housing of the winch 10. The other ends of the two rods can also be fixed to the mounting platform of the winch 10. The winch device includes, for example, the winch 10 and the mounting platform.

[0030] It is understood that when the movable part 21 is in its original position, the movable part 21 and the fixed part 22 are preferably perpendicular to each other. However, the movable part 21 and the fixed part 22 may not be perpendicular to each other, and can be set as needed.

[0031] exist Figure 1 In the illustrated embodiment, a first limit switch 30 is disposed on one side of the movable part 21 (although...). Figure 1 Only the first limit switch 30 is shown positioned on the first side of the movable part 21 (but it could also be on the second side opposite to the first side). The first limit switch 30 is used to detect whether the position of the movable part 21 has been raised. When the position of the movable part 21 is raised (relative to its original position), the first limit switch 30 is opened to disconnect the rope retraction control circuit. It can be understood that when the movable part 21 is in its original position, the first limit switch 30 is closed to connect the rope retraction control circuit. For example, the first limit switch 30 is also used to detect whether the position of the movable part 21 has been raised by a first distance, which is greater than or equal to the diameter of the rope.

[0032] In some embodiments, such as Figure 2As shown, the system also includes a second limit switch 40. The first limit switch 30 and the second limit switch 40 are respectively disposed on both sides of the movable part 21 in its direction of movement. The second limit switch 40 is used to detect whether the position of the movable part 21 has been raised by a second distance, which is greater than or equal to the diameter of the rope. If both the first limit switch 30 and the second limit switch 40 are open, the rope winding control circuit is disconnected; otherwise, the rope winding control circuit is on. In practical applications, the end face of the rope of the winch 10 is usually approximately circular. Therefore, the diameter of the rope in this embodiment is the diameter of the end face of the rope.

[0033] It is understandable that the first limit switch 30 and the second limit switch can be installed in a suitable position. When the module mounted on the movable part 21 hits the limit switch, the contacts of the limit switch will activate to achieve connection or disconnection.

[0034] In some embodiments, the system further includes an anti-skid rope control circuit. (Go to...) Figure 3 An exemplary anti-jump rope control circuit is shown.

[0035] like Figure 3 As shown, the anti-skip rope control circuit includes a first branch and a second branch connected in parallel, with the two ends of each branch respectively connected to the positive and negative terminals of the power supply. The first branch includes a first limit switch 30, a second limit switch 40, and a coil 50 of a first relay connected in series. The second branch includes a pair of normally open contacts 51 of the first relay and a coil 60 of the second relay connected in series. A pair of normally closed contacts of the second relay are adapted to be connected in series to the rope retraction control circuit.

[0036] like Figure 3 As shown, in addition to the first and second branches mentioned above, the anti-skip rope control circuit may also include a third branch. The two ends of the third branch are electrically connected to the positive and negative terminals of the aforementioned power supply. The third branch includes a pair of normally closed contacts 52 of the first relay and a skip rope warning light 70 connected in series.

[0037] like Figure 3 As shown, in addition to the first, second, and third branches mentioned above, the anti-skip rope control circuit may also include a fourth branch. The two ends of the fourth branch are electrically connected to the positive and negative terminals of the power supply. The fourth branch includes the coil 80 of the third relay. A pair of normally closed contacts of the third relay are adapted to be connected in series to the rope release control circuit.

[0038] When using the anti-rope-jumping control system of the winch 10 of this utility model, when the rope of the winch 10 jumps, the thickness of the overlapping steel wires on the drum 12 increases, and the position of the movable part 21 in the anti-rope-jumping mechanical device 20 is raised, causing the limit switch to open, directly stopping and locking the rope-retracting action of the winch 10. The operator can only control the winch 10 to release the rope, letting out the overlapping rope on the drum 12. The rope returns to its original position, and the movable part 21 in the anti-rope-jumping mechanical device 20 returns to its original position, causing the limit switch to close, thus unlocking the rope-retracting action of the winch 10. This effectively prevents the winch 10 from jumping and tangling. Furthermore, the opening of the limit switch can simultaneously trigger the warning light 70 to illuminate, prompting the operator to control the winch 10 to release the rope in a timely manner, avoiding work delays.

[0039] In this patent application, nouns and pronouns relating to persons are not limited to specific genders. In the claims and description of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A winch anti-slip rope control system, characterized in that, The system includes: The anti-jump rope mechanical device (20) includes a movable part (21) and a fixed part (22). The first end of the movable part (21) is movably connected to the first end of the fixed part (22). The second end of the movable part (21) hangs over the drum (12) of the winch. The second end of the fixed part (22) is fixed to the winch device. A first limit switch (30) is used to detect whether the position of the movable part (21) is raised. When the position of the movable part (21) is raised, the first limit switch (30) is disconnected so that the rope winding control circuit is disconnected.

2. The system according to claim 1, characterized in that, When the active part (21) is in its original position, the first limit switch (30) is closed to activate the rope winding control circuit.

3. The system according to claim 1, characterized in that, The first limit switch (30) is used to detect whether the position of the movable part (21) has been raised by a first distance, which is greater than or equal to the diameter of the rope.

4. The system according to claim 3, characterized in that, The system also includes a second limit switch (40), wherein the first limit switch (30) and the second limit switch (40) are respectively disposed on both sides of the movable part (21) in its direction of movement; The second limit switch (40) is used to detect whether the position of the movable part (21) is raised by a second distance, which is greater than or equal to the diameter of the rope. If the first limit switch (30) is open and the second limit switch (40) is open, the rope winding control circuit is disconnected; otherwise, the rope winding control circuit is in the on state.

5. The system according to claim 4, characterized in that, The system also includes an anti-skipping rope control circuit, which includes a first branch and a second branch connected in parallel, with the two ends of each branch respectively connected to the positive and negative terminals of a power supply. The first branch includes the coil (50) of the first limit switch (30), the second limit switch (40) and the first relay, which are connected in series. The second branch includes a pair of normally open contacts (51) of the first relay and a coil (60) of the second relay connected in series, and a pair of normally closed contacts of the second relay are adapted to be connected in series to the rope take-up control circuit.

6. The system according to claim 5, characterized in that, The anti-jump rope control circuit also includes a third branch, the two ends of which are electrically connected to the positive and negative terminals of the power supply. The third branch includes a pair of normally closed contacts (52) of the first relay and a warning light (70) connected in series.

7. The system according to claim 6, characterized in that, The anti-jump rope control circuit also includes a fourth branch, the two ends of which are electrically connected to the positive and negative terminals of the power supply. The fourth branch includes the coil (80) of a third relay, and a pair of normally closed contacts of the third relay are adapted to be connected in series to the rope release control circuit.

8. The system according to any one of claims 1-7, characterized in that, The movable part (21) is a U-shaped frame. The middle beam of the U-shaped frame hangs above the drum (12) of the winch. The fixed part (22) includes two rods. One end of each rod is movably connected to the ends of the two side beams of the U-shaped frame. The other end of each rod is fixed to the outer shell of the winch (10) or to the mounting platform of the winch (10). The winch device includes the winch (10) and the mounting platform.

9. The system according to claim 8, characterized in that, When the movable part (21) is in its original position, the movable part (21) and the fixed part (22) are perpendicular to each other.

10. The system according to any one of claims 1-7, characterized in that, The active connection is a hinge connection or a hinge joint.

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