Cable deflection angle accurate detection device for winch

Abstract

The invention 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. The change of the pulse number of the absolute value encoder is accurately collected and converted into the deflection angle of the cable relative to the winch drum, the deflection angle is introduced into the winch cable arrangement central controller, orderly and stable arrangement of the cable on the drum can be achieved, smooth operation of the winch is guaranteed, and the service life of the cable is greatly prolonged.

Description

Technical Field

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

[0002] As one of the key equipment in the deep-sea scientific research support system, the long-distance traction scientific research winch works in marine geological survey sampling, hydrological measurement, and the deployment and retraction of various underwater robots. The working performance of the winch equipment directly determines the success of the marine scientific research operation. The working medium of the long-distance traction scientific research 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 in the entire operation process and improve the service life of the cable, it is necessary to provide the winch with a precise cable arrangement solution.

[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 and it is difficult to meet the needs of high-intensity operations. Summary of the invention

[0004] The present invention provides a device for accurately detecting the deflection angle of a winch cable used for a long-distance traction scientific expedition winch. By accurately collecting the change in the number of pulses of an 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, thereby 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 present invention is: a precise detection device for the cable angle of deflection for 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 value encoder is installed on the rotating transmission shaft of the rotating component, which is used to accurately collect the change in the number of pulses of the absolute value encoder and convert it into the deflection 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 value 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 sleeve is inserted into the support shaft from top to bottom and axially positioned.

[0008] Furthermore, the rotating assembly consists of a covering plate, an absolute encoder, a rotating transmission shaft, a bearing and a rotating seat. The shaft end of the rotating transmission shaft is inserted into the central 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, one end of the rotating transmission shaft closes the mounting hole on the rotating seat, and a lubricating oil nozzle is provided to ensure that the inside 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, and the two groups of sleeve components 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 bearing and the bearing are respectively inserted into the stainless steel sleeve from top to bottom and from bottom to top, and the sleeve shaft is inserted into the stainless steel sleeve from top to bottom until the sleeve shaft and the bearing and the bearing 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 bearing and the bearing. 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 is composed 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 rotating 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 rotating seat and the ear holes of the adjusting stud, and the screwing depth of the adjusting stud in the support plate is adjustable.

[0014] The beneficial effects of the present invention are:

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

[0016] 2) By using an absolute encoder to collect pulse numbers, the range and accuracy of angle measurement are expanded. Specifically, in the dynamic balance process of collecting pulse numbers - signal feedback to the central controller - controller controlling the cable arrangement mechanism - continuing to collect pulse numbers, the angle detection device can detect 0~θ 1 All thresholds within the angle range are collected and tested instantly and continuously, which significantly improves the control accuracy of angle correction.

[0017] 3) All rotating matching 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 outgoing direction are used as reset components, so that the cable follower component automatically returns to the initial middle position after the cable loses tension, which can effectively solve the problem of angle measurement signal loss caused by the process of cable relaxation and re-tensioning, and further ensure the measurement accuracy of the angle detection device;

[0019] 5) The sleeve component 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 It is a cross-sectional structural diagram of the winch cable deflection accurate detection device of the present invention;

[0021] Figure 2 It is a side view of the accurate detection device for the deflection angle of the winch cable of the present invention;

[0022] Figure 3 A top view of the winch cable angle precision detection device of the present invention;

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

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

[0025] like Figures 1 to 4 As shown, a device for accurately detecting the cable angle of a winch according to the present invention mainly consists of a fixed installation component, a rotating component, a cable follower component and a reset component, 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 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 a 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 is composed of a mounting seat 4, a spacer sleeve 6 and a support shaft 9, and the relationship between them is as follows: the mounting seat 4 is fixedly installed on the guide wheel frame 3 by bolts, and the support shaft 9 passes through the bottom surface mounting hole of the mounting seat 4 from bottom to top by a tight fit, and the support shaft 9 can be fixed on the mounting seat 4 by an adhesive or welding method; 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 is composed of a sealing plate 5, an absolute value encoder 7, a rotating transmission shaft 8, a bearing 10 and a rotating seat 11, and the relationship between them is as follows: the bearing 10 is fixed in the upper hole of the mounting seat of the rotating seat 11 from top to bottom, and the sealing plate 5 is fixed to the lower hole of the mounting seat of the rotating seat 11 by screws, and then the rotating seat 11 is inserted into the support shaft 9 from top to bottom, and 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 value encoder 7 and fastened to the inner ring of the encoder, and at the same time, the outer ring shell of the absolute value encoder 7 is fastened to the mounting seat 4 by 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, and a lubricating oil nozzle is provided to ensure that the internal of the rotating cooperation is clean and pollution-free, and the rotation is reliable and smooth. The rotating seat 11 drives the rotating transmission shaft 8 to rotate freely within a certain angle, and 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 through the bracket screw, the encoder can synchronously generate the number of pulses corresponding to the rotation angle.

[0030] The cable follower assembly includes two sets of identical sleeve components, each set of sleeve components consists of a sleeve shaft 12, a bearing 13, a stainless steel sleeve 14, a bearing 15 and a cover plate 16. The mutual relationship is as follows: the stainless steel sleeve 14 is respectively inserted with the bearing 13 and the bearing 15 from top to bottom and from bottom to top, and the sleeve shaft 12 is inserted into the stainless steel sleeve 14 from top to bottom until the sleeve shaft 12 and the bearing 13 and the bearing 15 are in place; then the cover plate 16 is installed on the sleeve shaft 12 by bolts, and finally the two sets of sleeve components are passed through the rotating arm installation hole of the rotating seat 11 from bottom to top and tightened with nuts in the reverse direction.

[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 fit 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 deflects relative to the drum, it will generate friction with the stainless steel sleeve 14 on the side of the deflection and cause 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, and at the same time protect the surface of the cable 1;

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

[0033] The two sets of reset components are completely identical and symmetrically arranged on both sides of the rotating seat 11. The two hooks of the tension spring 18 are respectively hung in the earrings of the side plate 17 of the rotating seat 11 and the ear holes of the adjustment stud 19. The screwing depth of the adjustment stud 19 in the support plate 20 is adjustable. In the initial state, the tension springs 18 on both sides have the same spring pre-tensioning force, and the rotating seat 11 remains in the middle position. When the cable deflects and drives the rotating seat 11 to deflect through the cable follower assembly, the rotating seat 11 will squeeze the spring on the deflected side and stretch the spring on the non-deflected side. As a result, the tension springs on both sides will produce a tension difference. When the cable returns to the middle position, the rotating seat 11 can return to the initial middle position under the action of the tension difference to complete the reset. According to the size of the working tension of the cable, the pre-tensioning force of the tension spring can be changed by adjusting the screwing depth of the stud 19, which is convenient and quick. The use of this reset structure can effectively avoid the problem that the rotating seat 11 cannot be reset to the middle after the cable loses tension, resulting in the inaccuracy of the angle detection after the cable is tensioned again.

[0034] Working principle: When the cable 1 deviates to the left or right with respect to the drum or the right-angle cable arrangement mechanism at an angle θ, the cable pushes the sleeve component in the cable follower assembly to one side, and the rotating seat 11 produces 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. There is a certain functional relationship between the pulse number and the cable deflection angle 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. The pulse number S is introduced as a feedback signal into the cable arrangement control program in the winch central controller, and the position of the right-angle cable arrangement mechanism relative to the drum can be adjusted in time to keep the cable deflection angle θ within a relatively small range. The specific operation procedure is: When it is detected that the deflection angle θ reaches the acceptable maximum value θ 1 When the cable arrangement control program guides the cable arrangement motor or the motor to drive the right-angle cable arrangement mechanism to accelerate or decelerate toward the side of decreasing the deflection angle, until the deflection angle θ detected value is less than the threshold value θ 1 In the whole winch operation process, the angle of the cable relative to the drum can be kept within a reasonable range through precise angle correction, thus ensuring the orderly arrangement of the cable on the drum throughout the whole process.

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, and an absolute encoder is installed on the rotating transmission shaft of the rotating component to accurately collect the change in the number of pulses of the absolute encoder and convert it into the deflection 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.

2. The winch cable angle accurate detection device according to claim 1 is characterized in that: The fixed installation assembly consists of a mounting seat, a spacer and a support shaft. The mounting seat is fixedly installed on the guide wheel frame. 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.

3. The winch cable angle accurate 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 axially positioned.

4. The winch cable angle accurate 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 central 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.

5. The winch cable angle accurate detection device according to claim 4 is 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. The support shaft is axially positioned again after passing through the bearing. 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 accurate 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, 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 inside of the rotating cooperation is clean and pollution-free, and the rotation is reliable and smooth.

7. The winch cable angle accurate 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 accurate 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 bearing and the bearing 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 bearing and the bearing 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 bearing and the bearing. 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 accurate 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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