CN106865437B - The composite test device and test method for the movement speed and displacement of the marine winch cable - Google Patents

Abstract

The invention discloses a device and a method for testing the moving speed and displacement of an ocean winch cable arrangement in a combined mode, wherein the testing device comprises a support, a coil spring, a rope storage barrel, a supporting shaft, a testing gear and a bidirectional Hall switch; the support shaft is arranged on the support, the rope storage barrel is arranged on the support shaft through a bearing, one end of the coil spring is fixedly connected with the support, and the other end of the coil spring is fixed on the rope storage barrel; the rope storage barrel is fixedly provided with a test gear, and the test gear is coaxial with the rope storage barrel; the bidirectional Hall switch is arranged on the bracket corresponding to the test gear, and the axis of the bidirectional Hall switch passes through the center of the gear; the support is provided with a steel wire rope end locking device corresponding to the rope storage barrel. The invention adopts the reel to pull the contact mode of the test steel wire rope to measure the moving speed and the displacement, and the measurement displacement range is large; the invention is provided with the volute coil spring to provide certain tension and restoring force to ensure that the test steel wire rope is tightened, avoid rope disorder and have higher tracking and measuring precision.

Description

Combined testing device and testing method for moving speed and displacement of marine winch cables

technical field

The invention relates to the technical field of marine ship-borne winches, in particular to a composite testing device and testing method for the movement speed and displacement of cables of the marine winch.

Background technique

The marine winch is mainly used in the retraction and release of deep-sea resource development equipment, ROV system, underwater towing system, etc. The medium armored cable retracted on it not only transmits force, but also transmits power source and signal source, and has a large diameter. The operation of several kilometers in the deep sea makes the retraction and release of the armored cable on the marine winch involve long-distance multi-layer winding problems. The quality of the cable arrangement system directly affects the stress state and life of the armored cable, and the synchronization control of the cable arrangement is very important. To achieve cable control, the speed and position of the cable mechanism must be measured.

Patent ZL201620167044.8 discloses a deep-sea umbilical winch servo cable constant tension self-adaptive control device, which detects the speed of the umbilical cable by installing the cable cable encoder on the guide wheel of the cable cable; Patent ZL201420851641.3 discloses An electrical automatic cable arrangement device for cable arrays with various diameters on the winch is proposed, and the speed of the cable is obtained by measuring the rotational speed of the screw rod through a servo motor provided with a screw rod encoder, and combined with the limit strokes provided at both ends of the screw rod The switch controls the cabling synchronously.

The existing synchronous control of the cable arrangement mainly obtains the speed of the screw rod through the encoder, which must be combined with the travel limit switch for synchronous control, which is complicated in control and high in cost. The lack of the large stroke speed and displacement composite measuring device and method restricts the improvement of the performance and cost of the synchronous control system of the cable arrangement.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the present invention provides a composite test device for the movement speed and displacement of the marine winch cable, which can perform composite detection on the reciprocating speed and displacement of the marine winch cable, the test device is simple, the cost is low, and the test is convenient. The device is used to test the moving speed and displacement of marine winch cables.

The technical solution of the present invention to solve the above-mentioned technical problems is: a composite test device for the movement speed and displacement of the cable arrangement of the marine winch, which includes a support, a coil spring, a rope storage drum, a support shaft, a test gear and a two-way Hall switch; The support shaft is installed on the bracket, the rope storage cylinder is installed on the support shaft through the bearing, one end of the coil spring is fixedly connected with the bracket, and the other end is fixed on the rope storage cylinder; the rope storage cylinder is fixedly installed with a test gear for testing The gear is coaxial with the rope storage cylinder; the two-way Hall switch is installed on the bracket corresponding to the test gear, and the axis of the two-way Hall switch passes through the center of the gear; the bracket is provided with a wire rope end locking device corresponding to the rope storage cylinder .

In the above-mentioned composite test device for the movement speed and displacement of the cable arrangement of the marine winch, the support comprises a bottom plate and two side plates vertically installed on the bottom plate; the two side plates are arranged in parallel; In the shaft fixing part, the other side plate is provided with a through hole corresponding to the supporting shaft fixing part;

In the above-mentioned composite testing device for the movement speed and displacement of the marine winch cables, the support shaft is a hollow shaft.

In the above-mentioned composite testing device for the movement speed and displacement of the marine winch cable arrangement, the support is provided with an opening mask, and the rope storage cylinder and the support shaft are located in the closed space enclosed by the support and the opening mask.

In the above-mentioned composite test device for the movement speed and displacement of the marine winch cable arrangement, the opening mask is provided with a U-shaped plate corresponding to the rope storage cylinder, and the wire rope end locking device is installed on the U-shaped plate, located at the opening. inside the mask.

A composite test method for the movement speed and displacement of marine winch cables using the above-mentioned marine winch cable movement speed and displacement composite test device, comprising the following steps:

(1) Adjust the distance between the two-way Hall switch and the outer edge of the test gear until the signal is normal;

(2) Connect the signal line of the bidirectional Hall switch to the A/B phase counter of the PLC;

(3) Calculate the moving speed of the cable arrangement by collecting the pulse signal output by the bidirectional Hall switch and combining with the number of teeth of the test gear;

(4) Collect the pulse signal output by the bidirectional Hall switch, store it in the PLC power-down data register through mathematical processing, calculate, record and store the displacement of the cable arrangement.

In the above-mentioned composite test method for the movement speed and displacement of the cable arrangement of the marine winch, the formula for calculating the movement speed of the cable arrangement in step (3) is as follows:

In the formula: v-the speed of the cable arrangement; f-the number of pulses collected by the Hall sensor; z-the number of teeth of the test gear; r-the effective radius of the test wire rope around the rope storage drum; ±-represents the direction of the moving speed.

In the above-mentioned composite test method for the movement speed and displacement of the cable arrangement of the marine winch, the calculation formula for the displacement of the cable arrangement in step (4) is as follows:

In the formula, s- is the movement displacement of the cable; f _i- the number of pulses collected by the Hall sensor for the i-th time; T- the counting period of the high-speed counter; z- the number of teeth of the test gear; radius.

Compared with the prior art, the beneficial effects of the present invention are:

1. The test device of the present invention combines the A/B phase high-speed counter and the power-down data register of the PLC to realize the composite test of the reciprocating speed and displacement of the cable arrangement; the test device of the present invention adopts the reel pull test wire rope contact method to measure the movement Velocity and displacement, measuring displacement range is large;

2. The test device of the present invention is provided with a spiral coil spring to provide a certain tension and restoring force to ensure that the test wire rope is taut, avoid rope disorder, and have high tracking measurement accuracy;

3. The test device of the present invention adopts a large-diameter hollow support shaft to ensure the support strength and reduce the rotational inertia of the test device;

4. One end of the support of the testing device of the present invention is provided with a large installation hole, so that the rope storage drum and the support shaft are easily installed.

Description of drawings

FIG. 1 is a front view of the composite testing device for reciprocating movement speed and displacement of marine winch cables according to the present invention.

FIG. 2 is a top view of the composite testing device for reciprocating speed and displacement of marine winch cables according to the present invention.

FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1 .

In the picture: 1. Support, 2. Rope storage drum, 3. Coil spring, 4. Test wire rope, 5. Support shaft, 6. Positioning spacer, 7. Coil spring inner connecting screw, 8. Coil spring outer connecting screw , 9, open the mask, 10, test gear, 11, reel end cover, 12, sealing end cover, 13, self-aligning bearing, 14, two-way Hall switch, 15, single-head ferrule locking device, 16, U Pattern plate, 101, bottom plate, 102, left support plate, 103, right support plate, 902, Hall switch inclined support seat.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1-3 , the composite testing device for the movement speed and displacement of the marine winch cable arrangement of the present invention includes a support 1, a coil spring 3, a rope storage drum 2, a support shaft 5, a test gear 10 and a two-way Hall switch 14 . The support 1 includes a bottom plate 101 and two side plates 102 and 103 vertically installed on the bottom plate; the side plates 102 and 103 are arranged in parallel. A support shaft fixing part is provided at the center of the inner surface of the side plate 102, a through hole is provided on the side plate 103 corresponding to the support shaft fixing part, the diameter of the through hole is larger than the diameter of the support shaft 5, and a sealing end cover is installed at the through hole 12. The inner side of the sealing end cover 12 is provided with a supporting shaft fixing part. Both ends of the support shaft 5 are installed in the support shaft fixing part on the side plate 102 and the support shaft fixing part on the sealing end cover 12 respectively. The support shaft 5 is a hollow structure, which reduces its weight and ensures its strength. The bracket 1 is provided with an opening mask 9 , and the rope storage cylinder 2 and the support shaft 5 are located in the closed space enclosed by the bracket 1 and the opening mask 9 .

The rope storage drum 2 is installed on the support shaft 5 through the bearing 13, the bearing 13 is axially positioned on the support shaft 5 through the positioning spacer 6 and the drum end cover 11, and the positioning spacer 6 is sleeved on the support shaft. 5, located on the left side of the bearing 13, the reel end cover 11 is fixedly installed at one end of the inner hole of the rope storage drum 2, located on the right side of the bearing 13. One end of the coil spring 3 is fixedly connected with the bracket 1, and the other end is fixed on the rope storage drum 2. The coil spring 3 can provide a certain tension and restoring force to ensure that the test wire rope is taut, avoid rope disorder, and the tracking measurement accuracy is high. . A test gear 10 is fixedly installed on the rope storage cylinder 2 , and the test gear 10 is coaxial with the rope storage cylinder 2 . The opening mask 9 is provided with a Hall switch slanted support seat 902 corresponding to the test gear 10, the bidirectional Hall switch 14 is installed on the Hall switch slanted support seat 902, and the axis of the bidirectional Hall switch passes through the center of the gear. The opening mouth mask 9 is provided with a U-shaped plate 16 corresponding to the rope storage cylinder 2 , and the U-shaped plate 16 is provided with a wire rope end locking device 15 , and the wire rope end locking device 15 is located in the opening mouth mask 9 .

When the present invention is used, the coil spring 3 and the support 1 are connected with the inner connecting screw 7 of the coil spring, the test wire rope 4 and the test gear 10 are connected with the rope storage drum and inserted into the hollow support shaft 5 and the positioning spacer 6, and the outer coil spring The connecting screw 8 connects the coil spring 3 and the rope storage drum 2 . Install the bearing 13 and connect the drum end cover 11 and the rope storage drum 2 . Bolt the end cap to the side plate 103 of the support 1 . A wire rope end locking device 15 is installed on the outgoing end of the wire rope 4, and the U-shaped plate 16 is connected. Adjust the length of the wire rope 4, and connect the opening mask 9 and the support 1 with bolts. Install the two-way Hall switch 14 on the Hall inclined support seat of the opening mask 9, and adjust the distance between the two-way Hall switch 14 and the edge of the test gear 10, and control the distance within the range of 2-3mm.

The composite test method for the reciprocating speed and displacement of the marine winch cable arrangement of the present invention comprises the following steps:

(1) Connect the U-shaped plate 16 to the test wire rope 4 with bolts, and install the test device with bolts on the cable rack through the holes in the base plate of the support. Adjust the bidirectional Hall switch 14 and adjust the distance between the bidirectional Hall switch 14 and the outer edge of the test gear 10 until the signal is normal.

(2) During the test, the test gear 10 rotates synchronously with the rope storage drum 2. By collecting the pulse signal output by the two-way Hall switch 14, combined with the number of teeth of the test gear 10, the moving speed of the cable is calculated, and the calculation of the moving speed of the cable is obtained. The formula is as follows:

In the formula, v- cable laying speed, unit: m/s; f- number of pulses collected by Hall sensor, unit: HZ; z- tooth number of test gear; r- effective radius of test wire rope around rope storage drum, unit : m; ±- represents the direction of moving speed;

(3) During the test, the collected pulse signal output by the bidirectional Hall switch 14 is stored in the PLC power-down data register through mathematical processing, and the displacement of the cable is calculated, recorded and stored. The calculation formula of the displacement of the cable is as follows :

In the formula, s- is the movement displacement of the cable, unit: m; f _i - the number of pulses collected by the Hall sensor for the i-th time, unit: HZ; T- high-speed counter counting cycle, unit: s; z- the test gear Number of teeth; r - the effective radius of the test wire rope around the rope storage drum, unit: m.

Claims (6)

1. a marine winch cable moving speed and displacement composite testing device, it is characterized in that: comprise support, coil spring, storage rope drum, support shaft, test gear and two-way Hall switch; Described support shaft is installed on the bracket The rope storage cylinder is installed on the support shaft through the bearing, one end of the coil spring is fixedly connected with the bracket, and the other end is fixed on the rope storage cylinder; a test gear is fixedly installed on the rope storage cylinder, and the test gear and the rope storage cylinder are fixedly installed. coaxial; the two-way Hall switch is installed on the bracket corresponding to the test gear, and the axis of the two-way Hall switch passes through the center of the gear; the bracket is provided with a wire rope end locking device corresponding to the rope storage cylinder; The support includes a bottom plate and two side plates vertically installed on the bottom plate; the two side plates are arranged in parallel; a support shaft fixing part is arranged at the center of the inner side of one side plate, and the other side plate corresponds to the support shaft fixing part A through hole is provided, a sealing end cover is installed at the through hole, and a support shaft fixing part is arranged on the inner side of the sealing end cover; the support shaft is a hollow shaft. 2. The marine winch cable arrangement moving speed and displacement composite testing device according to claim 1, is characterized in that: described support is provided with opening mouth mask, and rope storage cylinder and support shaft are located in the airtight area enclosed by bracket and open mouth mask. within the space. 3. The composite testing device for moving speed and displacement of marine winch cable arrangement according to claim 2, characterized in that: the opening mask is provided with a U-shaped plate corresponding to the rope storage cylinder, and the end of the wire rope is locked. The device is mounted on the U-shaped plate, inside the opening mask. 4. a marine winch row cable movement speed and displacement composite test method utilizing the marine winch row cable movement speed and displacement composite test device of any one of claims 1-3, comprising the steps: (1) Adjust the distance between the two-way Hall switch and the outer edge of the test gear until the signal is normal; (2) Connect the signal line of the bidirectional Hall switch to the A/B phase counter of the PLC; (3) Calculate the moving speed of the cable arrangement by collecting the pulse signal output by the two-way Hall switch and combining with the number of teeth of the test gear; (4) Collect the pulse signal output by the bidirectional Hall switch, store it in the PLC power-off data register through mathematical processing, calculate, record and store the displacement of the cable arrangement. 5. The composite test method for the movement speed and displacement of the marine winch cable arrangement according to claim 4, the formula for calculating the movement speed of the cable arrangement in step (3) is as follows:

where:

Cable laying speed;

The number of pulses collected by the Hall sensor;

The number of teeth of the test gear;

Test the effective radius of the wire rope around the rope storage drum;

Represents the direction of movement speed. 6. The composite test method for the movement speed and displacement of the cable arrangement of the marine winch according to claim 4 or 5, the formula for calculating the displacement of the cable arrangement in step (4) is as follows:

(2) In the formula,

To move and displace the cable;

The number of pulses collected by the Hall sensor for the i-th time;

High-speed counter counting cycle;

The number of teeth of the test gear;

Test the effective radius of the wire rope around the rope storage drum.

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