Cable tensioning module and automatic cable winding and unwinding winch

Abstract

The utility model discloses a cable tensioning module and an automatic cable take-up and pay-off winch, the left side and the right side of the front end of a fixed seat are respectively and fixedly provided with a bearing seat, a first tensioning wheel and a second tensioning wheel are sequentially arranged between the two bearing seats from top to bottom, and the two ends of a wheel shaft of the second tensioning wheel are respectively and rotatably connected with the left bearing seat and the right bearing seat; one end of a wheel shaft of the second tensioning wheel is connected with an output shaft of the tensioning motor, the first tensioning wheel is rotationally connected with a first wheel shaft, the two ends of the first wheel shaft are rotationally connected with groove holes of the bearing seats on the two sides and can move up and down along the groove holes, and a through hole is formed in the first wheel shaft between the first tensioning wheel and the bearing seats; the plug screw penetrates through the through hole and the spring and then is fixed on the top plate of the fixed seat, and the spring is pressed tightly to form the cable tensioning module. An automatic cable winding and unwinding winch comprises a fixed frame, a winding drum, a winding drum motor, an encoder, a transmission mechanism, a cable tensioning module and a lead screw sliding block mechanism. The winding drum motor and the tensioning motor are combined to achieve the functions of motor tensioning, cable arrangement and automatic cable winding and unwinding.

Description

Technical Field

[0001] The utility model relates to the technical field of winch cable arrangement, in particular to a cable tensioning module and an automatic cable retracting and releasing winch. Background Art

[0002] A winch is a small, lightweight lifting device that uses a drum wrapped around a cable to lift or pull heavy objects. Based on the drive method, it can be divided into manual winches and automatic winches (also known as electric winches). Both types of winches consist of a drum that holds the cable and a cable-spooling assembly. The difference lies in whether the power driving the drum and cable-spooling assembly is manual or electrical. The applicant's unit has previously developed a manual winch with a cable-laying device (announcement number CN213416092U), which includes a winch module, a transmission module and a cable-laying module, wherein the cable-laying module includes a reciprocating screw, an optical shaft, a transmission nut, a guide wheel, a guide fixing rod and a fixing plate. The reciprocating screw, the optical shaft and the drum shaft in the winch module are arranged parallel to each other. The drum shaft is connected to the reciprocating screw through the transmission module, driving the reciprocating screw and the drum transmission shaft to rotate together according to a certain transmission ratio. The transmission nut is rotationally connected to the reciprocating screw, the transmission nut is sleeved on the optical shaft, and the fixing plate is placed above the transmission nut. The two guide wheels are fixed to the fixing plate by the guide wheel fixing rod and the butterfly nut respectively. The two guide wheels are close to each other, and a guide hole for the cable to pass through is formed in the middle. The following problems exist during its use: (1) Workers must assist in laying out the cable on site and cannot remotely control the device; (2) The two guide wheels in the cable assembly only serve as guides and cannot tension the cable between the cable assembly and the reel, making it easy for the cable to become tangled, tangled, or squeezed; (3) After the drive motor is connected to the end of the reel to form an automatic control device, it is difficult to automatically monitor the process of reeling in and out and confirm that the operation is complete. Utility Model Content

[0003] The purpose of the utility model is to provide a cable tensioning module and an automatic cable retracting and releasing winch, which solve the problems in the prior art of lacking effective cable arrangement components and causing cables to be easily confused, tangled, and squeezed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cable tensioning module includes a fixed seat, a bearing seat, a spring, a first tensioning wheel, a plug screw, a second tensioning wheel and a tensioning motor, a first wheel shaft, and a slot hole. A bearing seat is fixed on the left and right sides of the front end of the fixed seat respectively. The first tensioning wheel and the second tensioning wheel are arranged in sequence between the two bearing seats. A gap is formed between the first tensioning wheel and the second tensioning wheel for passing the cable. The two ends of the axle of the second tensioning wheel are rotatably connected to the left and right bearing seats respectively, and one end of the axle of the second tensioning wheel is connected to the output shaft of the tensioning motor. The first tensioning wheel is rotatably connected to the first wheel shaft. The two ends of the first wheel shaft are rotatably connected to the slot holes of the bearing seats on both sides and can move up and down along the slot holes. A through hole is opened on the first wheel shaft between the first tensioning wheel and the bearing seat. The plug screw is fixed to the top plate of the fixed seat after passing through the through hole and the spring, and the spring is pressed.

[0006] Furthermore, the cable tensioning module also includes a guide shaft. A pair of guide shafts are fixed in the cavity at the rear end of the fixing seat, and a gap for the cable to pass through is formed between the two guide shafts.

[0007] Furthermore, the cable tensioning module also includes a micro switch, which is fixed on the upper part of the top plate of the fixing seat. The micro switch is connected to the electrical signal of the tensioning motor. The diameter of the thick handle at the head end of the cable is larger than the diameter of the cable. When the thick handle at the head end of the cable enters the gap between the first tensioning wheel and the second tensioning wheel, the first tensioning wheel is lifted up, and the first tensioning wheel triggers the micro switch, sending a control signal to the tensioning motor, and the tensioning motor stops working.

[0008] An automatic cable retracting and releasing winch comprises a fixed frame, a drum, a drum motor, an encoder, a transmission mechanism, a cable tensioning module and a screw slider mechanism; wherein the screw slider mechanism comprises a screw rod, a fixed rod and a slider; the rotating shafts at both ends of the drum are mounted on both sides of the fixed frame and are both rotatably connected to the fixed frame, the output shaft of the drum motor is connected to the rotating shaft at one end of the drum, both ends of the fixed rod are fixed to the fixed frame, the screw rod is arranged parallel to the fixed rod and is placed on the outside of the drum, a threaded hole and a through hole are respectively provided on the slider, the fixed rod passes through the through hole, the screw rod is threadedly connected to the threaded hole, one end of the screw rod is rotatably connected to the output shaft of the drum motor through the transmission mechanism, and the other end of the screw rod is rotatably connected to the fixed frame, the cable tensioning module is mounted on the upper part of the slider, and the encoder is fixed on the output shaft of the drum motor for recording the number of revolutions of the drum.

[0009] The transmission mechanism is a belt drive structure, including a first rotating wheel, a second rotating wheel and a conveyor belt. The center hole of the first rotating wheel is sleeved on the output shaft of the winding motor, the center hole of the second rotating wheel is fixed to one end of the screw rod, and the other end of the screw rod is rotatably connected to the fixed frame. The first rotating wheel and the second rotating wheel are connected by a conveyor belt.

[0010] It should be noted that the automatic cable retracting winch also includes a photoelectric switch, which is installed on the drum and blocked by the end of the cable wound on the drum. The photoelectric switch is connected to the drum motor and the tensioning motor for electrical signals.

[0011] The automatic cable retracting winch further comprises a control cabinet, which is respectively connected to the drum motor, encoder, tensioning motor, micro switch and photoelectric switch.

[0012] The beneficial effects of the present invention are as follows: (1) The combination of the drum motor and the tensioning motor realizes the motor tensioning and cable arrangement functions, and the automatic cable retraction and release function; (2) The thick handle at the head end of the cable cooperates with the micro switch, and the end end of the cable cooperates with the photoelectric switch to promptly determine the end point of the cable retraction and release, and the system stops running after being triggered; (3) The cable tensioning module structure can retract and release the cable through elastic force and friction force; (4) The setting of the guide shaft can guide the cable when the cable tensioning module moves horizontally, so that the cable moves horizontally accordingly; (5) It has a cable status detection function to prevent accidental damage to the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the cable tensioning module involved in Example 1.

[0014] Figure 2 The front view (left) and side view (right) of the cable tensioning module involved in Example 1.

[0015] Figure 3 This is a side view of the cable tensioning module when the micro switch involved in Example 1 is triggered.

[0016] Figure 4 This is a three-dimensional diagram of the automatic cable retracting winch involved in Example 1.

[0017] Figure 5 This is a schematic diagram of the inner structure of the reel involved in Example 1. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and technical solutions.

[0019] Example 1

[0020] like Figure 1-2As shown, a cable tensioning module (also known as a cable arrangement assembly) involved in this embodiment includes a fixing seat 701, a bearing seat 702, a spring 703, a first tensioning wheel 704, a plug screw 705, a second tensioning wheel 706 and a tensioning motor 707, a first wheel shaft 710 and a slot 712. A bearing seat 702 is fixed on the left and right sides of the front end of the fixing seat 701 respectively, and a first tensioning wheel 704 and a second tensioning wheel 706 are sequentially arranged between the two bearing seats 702. A gap is formed between the first tensioning wheel 704 and the second tensioning wheel 706 for passing the cable. The two ends of the wheel shaft of the second tensioning wheel 706 are respectively connected to the left and right bearing seats 70 2 is rotatably connected, and one end of the axle of the second tensioning wheel 706 is connected to the output shaft of the tensioning motor 707, the first tensioning wheel 704 is rotatably connected to the first axle 710, and both ends of the first axle 710 are rotatably connected to the slots 712 of the bearing seats 702 on both sides and can move up and down along the slots 712. A through hole is opened on the first axle 710 between the first tensioning wheel 704 and the bearing seat 702, and a screw 705 is passed through the through hole and the spring 703 and is fixed to the top plate of the fixing seat 701. The spring 703 is pressed tightly. When working (when retracting and releasing the cable), the upper and lower sides of the cable are respectively in contact with the first tensioning wheel 704 and the second tensioning wheel 706.

[0021] It should be noted that the cable tensioning module involved in this embodiment also includes a first bearing 711. The first tensioning wheel 704 is rotatably connected to the first wheel shaft 710 through the first bearing 711. The two ends of the first wheel shaft 710 are inserted into the slots 712 of the bearing seats 702 on both sides and can move up and down along the slots 712.

[0022] It should be noted that the cable tensioning module involved in this embodiment also includes a second axle 713 and a second bearing 714. The second tensioning wheel 706 is fixed on the second axle 713. The two ends of the second axle 713 are respectively fixed on the left and right bearing seats 702 through a second bearing 714, and one end of the second axle 713 is connected to the tensioning motor 707.

[0023] The cable tensioning module of this embodiment further includes guide shafts 708. A pair of guide shafts 708 are fixed in the cavity at the rear end of the fixing base 701, forming a gap between the two guide shafts 708 for the cable to pass through. The cable passes through the gap between the first tensioning wheel 704 and the second tensioning wheel 706, as well as between the two guide shafts 708. Driven by the tensioning motor 707, the second tensioning wheel 706 rotates, and the spring 703 causes the first tensioning wheel 704 to move up and down relative to the second tensioning wheel 706 (during this movement, the first wheel shaft slides up and down along the slots on both sides). The upper and lower sides of the cable contact the first tensioning wheel 704 and the second tensioning wheel 706, respectively, and the cable moves under the traction of friction.

[0024] like Figure 3As shown, the cable tensioning module involved in this embodiment also includes a micro switch 709, which is fixed on the upper part of the top plate of the fixing seat 701. The micro switch 709 is electrically connected to the tensioning motor 707. The diameter of the thick handle at the head end of the cable is larger than the diameter of the cable. When the thick handle at the head end of the cable enters the gap between the first tensioning wheel 704 and the second tensioning wheel 706, the first tensioning wheel 704 is lifted up, and the first tensioning wheel 704 triggers the micro switch 709 and sends a control signal to the tensioning motor 707, and the tensioning motor 707 stops working.

[0025] like Figure 4 As shown, the present embodiment involves an automatic cable retracting winch, comprising a fixed frame 1, a reel 2, a reel motor 3, an encoder 4, a transmission mechanism 5, a cable tensioning module 7 and a screw slider mechanism 8; wherein the screw slider mechanism 8 comprises a screw 801, a fixed rod 802 and a slider 803; the rotating shafts at both ends of the reel 2 are mounted on both sides of the fixed frame 1 and are both rotatably connected to the fixed frame 1, the output shaft of the reel motor 3 is connected to the rotating shaft at one end of the reel 2, and both ends of the fixed rod 802 are fixed to the fixed frame On the frame 1, the screw rod 801 is arranged parallel to the fixed rod 802 and is placed on the outside of the reel 2. A threaded hole and a through hole are respectively provided on the slider 803. The fixed rod 802 passes through the through hole, and the screw rod 801 is threadedly connected to the threaded hole. One end of the screw rod 801 is rotatably connected to the output shaft of the reel motor 3 through the transmission mechanism 5, and the other end of the screw rod 801 is rotatably connected to the fixed frame 1. The cable tensioning module 7 is installed on the upper part of the slider 803, and the encoder 4 is fixed on the output shaft of the reel motor 3 to record the number of rotations of the reel 2.

[0026] Since the cables are stacked layer by layer on the reel 2, the reeling and releasing linear speed of each layer of cables is different when the speed of the reel motor 3 remains unchanged. It is necessary to control the speed ratio between the reel motor 3 and the tensioning motor 707 so that the linear speed of the reel 2 and the second tensioning wheel 706 is basically consistent, ensuring that the cable always remains in a tensioned state during the reeling and releasing process.

[0027] As an implementation method, the transmission mechanism 5 is a belt drive structure, including a first rotating wheel (not shown), a second rotating wheel 501, and a conveyor belt 502. The center hole of the first rotating wheel is sleeved on the output shaft of the reel motor 3 (or the rotating shaft of the reel 2). The center hole of the second rotating wheel 501 is fixed to one end of a screw rod 801, the other end of which is rotatably connected to the fixed frame 1. The first rotating wheel and the second rotating wheel 501 are connected by a conveyor belt 502. By adjusting the transmission ratio between the first rotating wheel and the second rotating wheel 501, the cable tensioning module 7 is linearly moved a distance of one cable diameter for each rotation of the reel 2. Of course, the transmission mechanism 5 can also be other transmission structures such as gear transmissions familiar to those skilled in the art.

[0028] It should be noted that: Figure 5As shown, the automatic cable retracting and unreeling winch of this embodiment further includes a photoelectric switch 9, which is mounted on the drum and shielded by the end of the cable wound around the drum (referred to as the "cable end"). The photoelectric switch 9 is electrically connected to the drum motor 3 and the tensioning motor 707. When the cable is fully unreeled, the photoelectric switch 9 located inside the drum 2 is triggered due to the absence of cable shielding, sending an electrical signal to the drum motor 3 and the tensioning motor 707 to stop rotation.

[0029] like Figure 3 As shown, the automatic cable retracting winch involved in this embodiment also includes a control cabinet 6, which is respectively connected to the drum motor 3, encoder 4, tensioning motor 707, micro switch 709 and photoelectric switch 9, and the control components work together.

[0030] The use process of the automatic cable retracting winch involved in this embodiment is as follows:

[0031] During the cable reeling process, the cable passes through the gap between the first tensioning wheel 704 and the second tensioning wheel 706. Driven by the tensioning motor 707, the second tensioning wheel 706 rotates, and the cable is pulled toward the reel 2 by the friction between the first and second tensioning wheels 704 and 706. At the same time, the reel motor 3 drives the reel 2 to rotate, and the frictional cable is wound around the reel. At the same time, the transmission mechanism drives the slider 803 along the screw rod 801. By adjusting the transmission ratio between the first and second rotating wheels 501, the cable tensioning module 7 is ensured to move linearly by a distance of one cable diameter for each rotation of the reel 2, and the cable is wound around the reel layer by layer in a forward and reverse spiral, realizing the cable arrangement function. During this process, the number of turns of the drum 2 recorded by the encoder 4 is used to calculate the number of cable layers being wound on the drum, the length of the stored cable is estimated, and the speed ratio of the drum motor 3 and the tensioning motor 707 is adjusted to ensure that the length of the cable pulled by the two is consistent, thereby preventing the cable from getting tangled, tangled, or squeezed during the cable winding process and ensuring that the cable is evenly wound on the drum 2. When the cable is fully wound, the thick handle at the head end of the cable will lift the tensioning wheel 1 704, thereby triggering the micro switch 709, and the drum motor 3 and the tensioning motor 707 will stop rotating.

[0032] During the cable unwinding process, the drum motor 3 rotates the drum 2, releasing the cable from the drum. Simultaneously, the transmission mechanism drives the slider 803 along the screw 801. By adjusting the transmission ratio between the first and second rotating wheels 501, the cable tensioning module 7 linearly moves a distance of one cable diameter for each rotation of the drum 2, releasing the layers of cable wound in a forward and reverse spiral on the drum one by one. Simultaneously, driven by the tensioning motor 707, the second tensioning wheel 706 rotates, releasing the released cable due to the friction between the first and second tensioning wheels 704 and 706. During this process, the number of layers of cable being unwound from the drum is calculated based on the number of revolutions of the drum 2 recorded by the encoder 4. The length of the released cable is then estimated, and the speed ratio of the drum motor 3 and the tensioning motor 707 is adjusted to ensure that the cable lengths are consistent. After the cable is fully unwound, the photoelectric switch 9 located inside the drum 2 is triggered, freed from the cable obstruction, and the drum motor 3 and the tensioning motor 707 stop rotating.

[0033] During the process of reeling in and releasing the cable, the control cabinet 6 detects in real time whether the current of the drum motor 3 exceeds the threshold. When the current is too large, it means that the cable is subjected to great tension. It may be that the equipment connected to the cable (such as an underwater robot) is stuck. The whole system will suspend operation and resume work after manual inspection and restoration to normal.

Claims

1. A cable tensioning module, characterized in that: The cam is secured to the upper and lower ends of the cam, and the cam is secured to the lower ends of the cam, wherein the cam is secured to the upper and lower ends of the cam.

2. The cable tensioning module according to claim 1, characterized in that: The cable tensioning module also includes a guide shaft. A pair of guide shafts are fixed in the cavity at the rear end of the fixing seat, and a gap is formed between the two guide shafts for the cable to pass through.

3. The cable tensioning module according to claim 1, characterized in that: The cable tensioning module also includes a micro switch, which is fixed on the upper part of the top plate of the fixing seat. The micro switch is connected to the electrical signal of the tensioning motor. The diameter of the thick handle at the head end of the cable is larger than the diameter of the cable. When the thick handle at the head end of the cable enters the gap between the first tensioning wheel and the second tensioning wheel, the first tensioning wheel is lifted up, and the first tensioning wheel triggers the micro switch, sending a control signal to the tensioning motor, and the tensioning motor stops working.

4. An automatic cable retracting winch, characterized in that: It includes a fixed frame, a reel, a reel motor, an encoder, a transmission mechanism, a cable tensioning module and a screw slider mechanism as described in any one of claims 1 to 3; wherein the screw slider mechanism includes a screw rod, a fixed rod and a slider; the rotating shafts at both ends of the reel are installed on both sides of the fixed frame and are rotatably connected to the fixed frame, the output shaft of the reel motor is connected to the rotating shaft at one end of the reel, both ends of the fixed rod are fixed to the fixed frame, the screw rod is arranged parallel to the fixed rod and is placed on the outside of the reel, threaded holes and through holes are respectively provided on the slider, the fixed rod passes through the through hole, the screw rod is threadedly connected to the threaded hole, one end of the screw rod is rotatably connected to the output shaft of the reel motor through the transmission mechanism, and the other end of the screw rod is rotatably connected to the fixed frame, the cable tensioning module is installed on the upper part of the slider, and the encoder is fixed on the output shaft of the reel motor for recording the number of rotations of the reel.

5. The automatic cable retracting winch according to claim 4, characterized in that: The transmission mechanism is a belt drive structure, including a first rotating wheel, a second rotating wheel and a conveyor belt. The center hole of the first rotating wheel is sleeved on the output shaft of the winding motor, the center hole of the second rotating wheel is fixed to one end of the screw rod, and the other end of the screw rod is rotatably connected to the fixed frame. The first rotating wheel and the second rotating wheel are connected by a conveyor belt.

6. The automatic cable retracting winch according to claim 4, characterized in that: The automatic cable retracting winch also includes a photoelectric switch, which is installed on the drum and blocked by the end of the cable wound on the drum. The photoelectric switch is connected to the drum motor and the tensioning motor by electrical signals.

7. The automatic cable retracting winch according to claim 4, characterized in that: The automatic cable retracting and releasing winch further comprises a control cabinet, which is respectively connected to the drum motor, encoder, tensioning motor, micro switch and photoelectric switch.

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