Cable deflection angle accurate detection device for winch

Abstract

The utility model relates to a winch cable drift angle accurate detection device, which comprises a fixed installation assembly, a rotating assembly, a cable follow-up assembly and a reset assembly, the fixed installation assembly is installed on a guide wheel frame, the rotating assembly is installed on a fulcrum shaft of the fixed installation assembly, and an absolute value encoder is installed on a rotating transmission shaft of the rotating assembly. A rotating seat of the rotating assembly is connected with a cable follow-up assembly, and resetting assemblies are symmetrically arranged on the two sides of the rotating seat; and the absolute value encoder is connected with the winch right-angle cable arrangement mechanism through the winch cable arrangement controller. According to the utility model, the change of the pulse number of the absolute value encoder is accurately acquired and converted into the deflection angle of the cable relative to the winch drum, and the deflection angle is introduced into the winch cable arrangement central controller, so that the cable can be orderly and stably arranged on the drum, the smooth operation of the winch is ensured, and the service life of the cable is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to a winch supporting equipment in a deep-sea scientific research support system, in particular to a precise angle detection device for a right-angle cable arrangement mechanism in a long-distance traction-type scientific research winch. Background Art

[0002] As one of the key equipment in the deep-sea scientific research support system, the long-distance traction winch works in environments involving marine geological survey sampling, hydrological measurement, and the deployment and retraction of various underwater robots. The performance of the winch equipment directly determines the success of marine scientific research operations. The working medium of the long-distance traction winch is generally an extra-long cable (5,000 meters to 10,000 meters). In order to ensure the stability and reliability of the scientific research winch throughout the entire operation process and improve the service life of the cable, a precise cable arrangement solution is required for the winch.

[0003] At present, the angle correction adaptive cable-laying device based on the right-angle cable-laying mechanism used in general long-distance scientific research winches has a complex angle detection scheme, low accuracy of the proximity switch trigger signal, a narrow angle measurement range and a large overall size, which greatly limits the work scenarios it can adapt to. After long-term use, its performance decreases, making it difficult to meet the needs of high-intensity operations. Summary of the Invention

[0004] The utility model provides a device for accurately detecting the deflection angle of the winch cable used for long-distance traction scientific research winches. By accurately collecting the change in the number of pulses of the absolute encoder and converting it into the deflection angle of the cable relative to the winch drum, the deflection angle is introduced into the winch cable arrangement controller to achieve orderly and stable arrangement of the cable on the drum, ensuring smooth winch operation and greatly improving the service life of the cable.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a precise detection device for the cable angle of a winch, comprising a fixed installation component, a rotating component, a cable following component and a reset component. The fixed installation component is installed on the guide wheel frame, the rotating component is installed on the support shaft of the fixed installation component, and an absolute encoder is installed on the rotating transmission shaft of the rotating component for accurately collecting the change in the number of pulses of the absolute encoder and converting it into the angle of the cable relative to the winch drum. The rotating seat of the rotating assembly is connected to the cable following component, and the reset components are symmetrically arranged on both sides of the rotating seat; the absolute encoder is connected to the winch right-angle cable arrangement mechanism through the winch cable arrangement controller.

[0006] Furthermore, the fixed installation assembly consists of a mounting seat, a spacer sleeve and a support shaft. The mounting seat is fixedly installed on the guide wheel frame, and the support shaft passes through the bottom mounting hole of the mounting seat from bottom to top in a tight fit. After the mounting seat and the support shaft are installed and positioned on the guide wheel frame, the support shaft remains in a vertical state and its center coincides with the center line of the guide wheel cable outlet, ensuring that the rotating seat will not produce any deflection when the cable deflection angle is zero degrees.

[0007] Furthermore, the support shaft is fixed on the mounting seat by means of adhesive or welding; the spacer is inserted into the support shaft from top to bottom and is axially positioned.

[0008] Furthermore, the rotating assembly consists of a sealing plate, an absolute encoder, a rotating transmission shaft, a bearing and a rotating seat. The end of the rotating transmission shaft is inserted into the center through hole of the absolute encoder and fastened to the inner ring of the encoder. At the same time, the outer ring housing of the absolute encoder is fastened to the mounting seat with screws through a small mounting bracket; the rotating seat drives the rotating transmission shaft to rotate freely within a certain angle, and the rotating transmission shaft drives the inner ring of the absolute encoder to rotate synchronously to synchronously generate a number of pulses corresponding to the rotation angle.

[0009] Furthermore, the bearing is installed into the upper hole of the mounting seat of the rotating seat from top to bottom and fixed, and the sealing plate is installed and fixed at the lower hole of the mounting seat of the rotating seat with screws, and then the rotating seat is inserted into the support shaft from top to bottom. After the support shaft passes through the bearing, it is axially positioned again, and the rotating transmission shaft is fixed to the upper hole of the mounting seat of the rotating seat by bolts, and the transmission shaft and the support shaft are kept concentric.

[0010] Furthermore, the rotating seat and the support shaft complete the rotational cooperation through bearings and sleeves. The sealing plate closes the mounting hole under the rotating seat, and one end of the rotating transmission shaft closes the mounting hole on the rotating seat. A lubricating oil nozzle is provided to ensure that the interior of the rotating cooperation is clean and pollution-free, and the rotation is reliable and smooth.

[0011] Furthermore, the cable follower assembly includes two groups of identical sleeve components, which pass through the rotating arm mounting holes of the rotating seat from bottom to top and are fastened in reverse directions using nuts.

[0012] Furthermore, each set of sleeve components consists of a sleeve shaft, a bearing, a stainless steel sleeve, a bearing and a cover plate. The bearings and the bearings are inserted into the stainless steel sleeve from top to bottom and from bottom to top respectively, and the sleeve shaft is inserted into the stainless steel sleeve from top to bottom until the sleeve shaft and the bearings and the bearings are in place; the cover plate is installed on the sleeve shaft by bolts, and the sleeve shaft in the sleeve component completes a rotational fit with the stainless steel sleeve through the bearings and the bearings. The cover plate closes the lower end of the sleeve and is connected to the sleeve shaft with bolts. A rotating shaft lip sealing ring is used at the upper and lower ends of the sleeve to ensure that the rotating fit is clean and pollution-free, and the rotation is reliable and smooth.

[0013] Furthermore, the reset assembly consists of a side plate, a tension spring, an adjustment stud and a support plate. The side plate is vertically welded to the rotating arm plate of the rotating seat; the adjustment stud is screwed into the screw holes of the support plate on both sides of the guide wheel frame and fastened with nuts; the two hooks of the tension spring are respectively hung on the side plate earrings and the adjustment stud ear holes of the rotating seat, and the screwing depth of the adjustment stud in the support plate is adjustable.

[0014] The beneficial effects of the utility model are:

[0015] 1) The device for accurately detecting the deflection angle of a winch for long-distance scientific expeditions of the present invention has the advantages of simple overall structure, small size, convenient installation, and simple maintenance, and can be applied to a variety of winch cable-laying occasions;

[0016] 2) By using an absolute encoder to collect pulse counts, the range and accuracy of angle measurement are expanded. Specifically, during the dynamic balance process of collecting pulse counts, feeding signals back to the central controller, the controller controlling the cable arrangement mechanism, and then continuing to collect pulse counts, the angle detection device can instantly and continuously collect and detect all thresholds within the 0 to θ1 angle range, significantly improving the control accuracy of angle correction.

[0017] 3) All rotating fitting structures adopt rolling bearings and dustproof and waterproof seals to ensure the reliability of the device's long-term operation;

[0018] 4) Two sets of pre-tensioning springs, symmetrically arranged along the cable outflow direction, are used as reset components. When the cable loses tension, the cable follower component automatically returns to its initial neutral position. This effectively solves the problem of angle measurement signal loss caused by the cable being relaxed and then re-tensioned, further ensuring the measurement accuracy of the angle detection device.

[0019] 5) The sleeve component that is in direct contact with the cable is made of stainless steel, and the rotation of the sleeve and the sleeve shaft adopts rolling bearings and dust-proof and waterproof seals, which can reduce the wear of the cable during long-term operation and thus protect the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional structural diagram of the winch cable angle precision detection device of the present utility model;

[0021] Figure 2 This is a side view of the winch cable angle precision detection device of the utility model;

[0022] Figure 3 This is a top view of the winch cable angle precision detection device of the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the working principle of the accurate detection device for the cable deflection angle of the winch. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 4 As shown, the utility model is a device for accurately detecting the deflection angle of a cable for a winch. In addition to the winch working medium cable 1, the right-angle cable arrangement mechanism guide wheel 2 and the guide wheel frame 3 where the device is installed, the device is mainly composed of a fixed installation component, a rotating component, a cable follower component and a reset component; the fixed installation component is installed on the guide wheel frame 3, the rotating component is installed on the support shaft 9 of the fixed installation component, the absolute value encoder 7 is installed on the rotating transmission shaft 8 of the rotating component, and the cable follower component is connected through the rotating seat 11, and the reset components are symmetrically arranged on both sides of the rotating seat 11; the absolute value encoder 7 is connected to the winch right-angle cable arrangement mechanism through the winch central controller.

[0026] The fixed installation assembly consists of a mounting base 4, a spacer sleeve 6, and a support shaft 9. The relationship between them is as follows: the mounting base 4 is fixedly mounted on the guide wheel frame 3 by bolts, and the support shaft 9 passes through the bottom mounting hole of the mounting base 4 from bottom to top in a tight fit manner. The support shaft 9 can be fixed to the mounting base 4 by adhesive or welding. The spacer sleeve 6 is inserted into the support shaft 9 from top to bottom and axially positioned.

[0027] After the mounting seat 4 and the support shaft 9 are installed and positioned on the guide wheel frame 3 using bolts, the support shaft 9 remains in a vertical state and its center coincides with the center line of the guide wheel cable outlet, ensuring that the rotating seat will not produce any deflection when the cable deflection angle is zero degrees.

[0028] The rotating assembly consists of a closing plate 5, an absolute encoder 7, a rotating transmission shaft 8, a bearing 10 and a rotating seat 11. The relationship between them is as follows: the bearing 10 is installed in the upper hole of the mounting seat of the rotating seat 11 from top to bottom and fixed, and the closing plate 5 is fixed to the lower hole of the mounting seat of the rotating seat 11 with screws, and then the rotating seat 11 is sleeved into the support shaft 9 from top to bottom. The support shaft 9 is axially positioned again after passing through the bearing 10, and the rotating transmission shaft 8 is fixed to the upper hole of the mounting seat of the rotating seat 11 by bolts, and the transmission shaft 8 and the support shaft 9 are kept concentric, and the shaft end of the rotating transmission shaft 8 is inserted into the central through hole of the absolute encoder 7 and fastened to the inner ring of the encoder. At the same time, the outer ring housing of the absolute encoder 7 is fastened to the mounting seat 4 with screws through a small mounting bracket;

[0029] The rotating seat 11 and the support shaft 9 complete the rotational cooperation through the bearing 10 and the sleeve 6. The sealing plate 5 seals the lower mounting hole of the rotating seat 11. One end of the rotating transmission shaft 8 seals the upper mounting hole of the rotating seat 11. A lubricating oil nozzle is provided to ensure that the internal cleaning and pollution-free of the rotating cooperation and the rotation are reliable and smooth. The rotating seat 11 drives the rotating transmission shaft 8 to rotate freely within a certain angle. The rotating transmission shaft 8 drives the inner ring of the encoder 7 to rotate synchronously. Since the outer ring housing of the encoder 7 is fixed to the mounting seat 4 by the bracket screw, the encoder can synchronously generate the number of pulses corresponding to the rotation angle.

[0030] The cable follower assembly consists of two identical sleeve components, each consisting of a sleeve shaft 12, a bearing 13, a stainless steel sleeve 14, a bearing 15, and a cover plate 16. The following relationships are as follows: the bearing 13 and the bearing 15 are inserted into the stainless steel sleeve 14 from top to bottom and from bottom to top, respectively. The sleeve shaft 12 is inserted into the stainless steel sleeve 14 from top to bottom until the sleeve shaft 12, bearing 13, and bearing 15 are properly engaged. The cover plate 16 is then bolted to the sleeve shaft 12. Finally, the two sleeve components are passed from bottom to top through the rotating arm mounting holes of the rotating base 11 and tightened with nuts in opposite directions.

[0031] The sleeve shaft 12 in the sleeve component completes the rotational fit with the stainless steel sleeve 14 through the bearing 13 and the bearing 15. The cover plate 16 closes the lower end of the sleeve and is connected to the sleeve shaft 12 with bolts. A rotating shaft lip seal ring is used at the upper and lower ends of the sleeve to ensure that the rotation is clean and pollution-free, and the rotation is reliable and smooth. The cable 1 passes through the two sleeve components during operation. The installation spacing of the two sleeve components can be adjusted according to the cable diameter, which is generally 1 to 2 mm wider than the cable diameter. When the cable 1 has a deflection angle relative to the drum, it will generate friction with the stainless steel sleeve 14 on the side of the deflection angle and prompt the sleeve 14 to rotate. The use of this rotating structure can ensure that the stainless steel sleeve 14 will not produce significant wear during the entire operation process, thereby causing the detection accuracy of the entire deflection detection device to decrease, while protecting the surface of the cable 1.

[0032] The reset assembly consists of a side plate 17, a tension spring 18, an adjustment stud 19, and a support plate 20. The tension spring 18 is attached to the earring on the side plate 17 at one end and to the adjustment stud 19 at the other end. The adjustment stud 19 is screwed into the screw holes on the support plate 20 on both sides of the guide wheel frame 3 and fastened with nuts. The side plate 17 is welded vertically to the rotating arm plate of the rotating seat 11.

[0033] Two identical reset assemblies are symmetrically arranged on either side of the rotating base 11. The two hooks of the tension spring 18 are respectively attached to the earrings of the side plate 17 and the earhole of the adjustment stud 19 of the rotating base 11. The screwing depth of the adjustment stud 19 into the support plate 20 is adjustable. Initially, the tension springs 18 on both sides have the same spring pretension force, and the rotating base 11 remains in the neutral position. When the cable deflects and the cable follower assembly drives the rotating base 11 to deflect, the rotating base 11 squeezes the spring on the deflected side and stretches the spring on the non-deflected side. This creates a tension difference between the two tension springs. When the cable returns to the neutral position, the rotating base 11 returns to its initial neutral position due to this tension difference, completing the reset. The tension spring pretension force can be adjusted by adjusting the screwing depth of the stud 19 according to the working tension of the cable, which is convenient and quick. This reset structure effectively prevents the rotating base 11 from being unable to return to the center after the cable loses tension, resulting in inaccurate angle detection after the cable is re-tensioned.

[0034] Working principle: When the cable 1 deviates to the left or right at an angle θ relative to the drum or the right-angle cable arrangement mechanism, the cable pushes the sleeve component in the cable follower assembly to one side, and the rotating seat 11 generates a deflection centered on the support shaft 9 under the linkage action of the sleeve component. The deflection is further transmitted to the inner ring of the absolute encoder 7 by the rotating transmission shaft 8. When the outer ring housing of the encoder 7 is fixed, the encoder generates a pulse number S. The pulse number has a certain functional relationship with the cable deflection θ, θ = f(S). The function is determined by the physical dimensions such as the installation position size of the deflection detection device, the cable diameter, and the distance from the cable deflection point to the drum. This pulse count S is introduced into the winch central controller as a feedback signal, allowing the right-angle cable arrangement mechanism to be adjusted relative to the drum in a timely manner, keeping the cable deflection angle θ within a relatively small range. The specific operating procedure is as follows: when the deflection angle θ reaches the maximum acceptable value θ1, the winch central controller will instruct the cable arrangement motor or motor to drive the right-angle cable arrangement mechanism to accelerate or decelerate toward the direction of decreasing the deflection angle until the deflection angle θ is less than the threshold value θ1, and repeat this process. Precise angle correction throughout the winch operation process ensures that the angle of the cable relative to the drum remains within a reasonable range, thus ensuring the orderly arrangement of the cable on the drum throughout its entire operation.

Claims

1. A device for accurately detecting the deflection angle of a winch cable, characterized in that: It includes a fixed installation component, a rotating component, a cable following component and a reset component. The fixed installation component is installed on the guide wheel frame, the rotating component is installed on the support shaft of the fixed installation component, the absolute value encoder is installed on the rotating transmission shaft of the rotating component, the rotating seat of the rotating component is connected to the cable following component, and the reset components are symmetrically arranged on both sides of the rotating seat; the absolute value encoder is connected to the winch right-angle cable arrangement mechanism through the winch cable arrangement controller.

2. The winch cable angle precision detection device according to claim 1, characterized in that: The fixed installation assembly consists of a mounting seat, a spacer sleeve and a support shaft. The mounting seat is fixedly installed on the guide wheel frame, and the support shaft passes through the bottom mounting hole of the mounting seat from bottom to top with a tight fit. After the mounting seat and the support shaft are installed and positioned on the guide wheel frame, the support shaft remains in a vertical state and its center coincides with the center line of the guide wheel cable outlet, ensuring that the rotating seat will not produce any deflection when the cable deflection angle is zero degrees.

3. The winch cable angle precision detection device according to claim 2, characterized in that: The support shaft is fixed on the mounting seat by means of adhesive or welding; the spacer is inserted into the support shaft from top to bottom and is axially positioned.

4. The winch cable angle precision detection device according to claim 1, characterized in that: The rotating assembly consists of a cover plate, an absolute encoder, a rotating transmission shaft, a bearing, and a rotating seat. The end of the rotating transmission shaft is inserted into the center through hole of the absolute encoder and fastened to the inner ring of the encoder. At the same time, the outer ring housing of the absolute encoder is fastened to the mounting seat with screws through a small mounting bracket. The rotating seat drives the rotating transmission shaft to rotate freely within a certain angle, and the rotating transmission shaft drives the inner ring of the absolute encoder to rotate synchronously to synchronously generate the number of pulses corresponding to the rotation angle.

5. The winch cable angle precision detection device according to claim 4, characterized in that: The bearing is installed into the upper hole of the mounting seat of the rotating seat from top to bottom and fixed. The sealing plate is installed on the lower hole of the mounting seat of the rotating seat with screws and fixed. Then the rotating seat is inserted into the support shaft from top to bottom. After the support shaft passes through the bearing, it is axially positioned again. The rotating transmission shaft is fixed to the upper hole of the mounting seat of the rotating seat by bolts, and the transmission shaft and the support shaft are kept concentric.

6. The winch cable angle precision detection device according to claim 4, characterized in that: The rotating seat and the support shaft complete the rotational cooperation through bearings and sleeves. The sealing plate closes the mounting hole under the rotating seat. One end of the rotating transmission shaft closes the mounting hole on the rotating seat and is equipped with a lubrication nozzle to ensure that the inside of the rotating cooperation is clean and pollution-free, and the rotation is reliable and smooth.

7. The winch cable angle precision detection device according to claim 1, characterized in that: The cable follower assembly comprises two groups of identical sleeve components, which pass through the rotating arm mounting holes of the rotating seat from bottom to top and are fastened in reverse directions using nuts.

8. The winch cable angle precision detection device according to claim 7, characterized in that: Each set of sleeve components consists of a sleeve shaft, a bearing, a stainless steel sleeve, a bearing and a cover plate. The bearings and the bearings are inserted into the stainless steel sleeve from top to bottom and from bottom to top respectively, and the sleeve shaft is inserted into the stainless steel sleeve from top to bottom until the sleeve shaft and the bearings and the bearings are in place; the cover plate is installed on the sleeve shaft by bolts, and the sleeve shaft in the sleeve component completes the rotational fit with the stainless steel sleeve through the bearings and the bearings. The cover plate closes the lower end of the sleeve and is connected to the sleeve shaft with bolts. A rotating shaft lip seal is used at the upper and lower ends of the sleeve to ensure that the rotating fit is clean and pollution-free, and the rotation is reliable and smooth.

9. The winch cable angle precision detection device according to claim 1, characterized in that: The reset assembly consists of a side plate, a tension spring, an adjusting stud and a support plate. The side plate is vertically welded to the rotating arm plate of the swivel seat; the adjusting stud is screwed into the screw holes of the support plate on both sides of the guide wheel frame and fastened with nuts; the two hooks of the tension spring are respectively hung on the side plate earrings of the swivel seat and the ear holes of the adjusting stud, and the screwing depth of the adjusting stud in the support plate is adjustable.

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