CN110646162A - An underwater dual-axis freely rotating three-sensor linkage force measuring device - Google Patents

Abstract

The invention provides an underwater dual-axis free-rotating three-sensor linkage force measuring device, comprising an inclination sensor, a tension sensor, a depth sensor, a linkage support mechanism, a bearing frame, a horizontal-axis connection mechanism, a vertical-axis connection mechanism, a casing and a tester. The linkage support mechanism connects the inclination sensor, the tension sensor and the depth sensor in sequence from bottom to top, and the horizontal axis coupling mechanism transversely penetrates the vertical axis coupling mechanism and the linkage support mechanism. The beneficial effects of the invention are as follows: the specimen and the tension sensor are collinear, the inclination sensor and the tension sensor are fixedly arranged on the linkage support mechanism, and the tension value and inclination value of the specimen under different working conditions can be measured synchronously; Therefore, more accurate actual lifting and resistance parameters can be obtained, and reliable and accurate data are provided for calculation. The introduction error of heave force in the tension value is solved.

Description

An underwater dual-axis freely rotating three-sensor linkage force measuring device

technical field

The invention relates to a sensor device, mainly an underwater dual-axis free-rotating three-sensor linkage force measuring device.

Background technique

The tangential and normal resistance coefficients of underwater flexible bodies such as streamers, line arrays, and tail ropes are directly related to their fluid resistance and underwater spatial configuration. To simulate and calculate underwater towed bodies, it is necessary to know their resistance coefficients first. . At present, the measurement method of drag coefficient is usually used in the measurement of drag coefficient at home and abroad. The flow resistance of the dragged specimen is measured by a large traveling device mounted with a tension sensor. Due to factors such as the length, depth of the pool and the speed of the traveling device, the pool test cannot measure the drag. There are gravity cables with large inclinations at times, and the tension sensor is difficult to measure large specimens due to the limited strength of the tension head due to driving restrictions. The only sensor mounted on the driving device is the tension sensor, which cannot measure the inclination angle of the test piece synchronously. In actual towing, the test body is rarely completely zero buoyant, and there will inevitably be floating and sinking phenomena, and there is a pitch angle. The measured tensile force includes the test body. There is a large error in the heave force of the piece in water. To accurately measure the actual pulling force value, it is necessary to simultaneously measure the inclination angle of the specimen when it is under force, and convert and correct the pulling force measurement value with the pitching inclination angle, so as to obtain a more accurate actual lift resistance and further calculate the hydrodynamic coefficient.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide an underwater dual-axis free-rotating three-sensor linkage force measuring device. Through the structural design of the force measuring device, it is convenient to measure the pull-down force and inclination value under different working conditions. , which solves the problem of the introduction error of the heave force in the tension value.

The object of the present invention is accomplished through the following technical solutions. This underwater dual-axis free-rotating three-sensor linkage force measuring device mainly includes an inclination sensor, a tension sensor, a depth sensor, a linkage support mechanism, a bearing frame, a horizontal axis connection mechanism, a vertical axis connection mechanism, a shell and a test piece. The linkage support mechanism is connected to the inclination sensor, the tension sensor and the depth sensor in sequence from bottom to top, the horizontal axis connecting mechanism transversely penetrates the vertical axis connecting mechanism and the linkage supporting mechanism, wherein the linkage supporting mechanism can rotate freely in the vertical plane around the horizontal axis, and the horizontal axis The coupling mechanism, the longitudinal axis coupling mechanism and the bearing frame are connected and fixed by screws, the outer shell of the whole structure is set, and the test piece is fixed to the tension sensor by the lifting ring screws and is collinear.

Further, the linkage support mechanism includes a hoop and a cross connecting plate, the hoop is in the shape of a finger ring, and is fixedly connected to the cross connecting plate, and the linkage support mechanism is symmetrically arranged on the upper and lower sides of the tension sensor. The cross connecting plates on both sides clamp the tension sensor, and the inclination sensor and the depth sensor are respectively fixed and connected to the upper and lower hoops.

Further, the bearing frame is in the shape of a "door", with a vertical axis mounting hole at the top, and a horizontal axis mounting hole and a plurality of screw holes symmetrically arranged on both sides.

Further, the transverse shaft coupling mechanism includes a transverse shaft and a transverse bearing, and transverse bearings are provided at both ends of the transverse shaft, and penetrate the transverse shaft installation holes of the bearing frame.

Further, the longitudinal axis coupling mechanism includes a longitudinal axis sleeve and a longitudinal bearing, and the longitudinal bearing is arranged at the bottom of the longitudinal axis sleeve and is fixedly arranged in the longitudinal axis installation hole of the bearing frame.

Further, the casing includes a shroud and a bearing sleeve, the bearing sleeve is arranged on the top of the shroud and covers the protruding longitudinal axis coupling mechanism, and the shroud is irregular in shape and covers the entire structure. .

Furthermore, the lead wire of the sensor is arranged in the shroud, and the lead wire extends upward to the cabin data acquisition instrument through the hollow longitudinal shaft sleeve and the through hole of the bearing sleeve.

The beneficial effects of the present invention are:

1. The specimen and the tension sensor are collinear, and the inclination sensor and the tension sensor are fixedly arranged on the linkage support mechanism, which can simultaneously measure the tension value and inclination angle value of the specimen under different working conditions, and provide the calculation of the hydrodynamic coefficient of the specimen. convenience;

2. Correct the tension value with the inclination angle value, so as to obtain more accurate actual lift and resistance parameters, and provide reliable and accurate data for calculation.

Description of drawings

Fig. 1 is the exploded schematic diagram of the present invention;

FIG. 2 is a schematic diagram of the test state of the present invention.

Description of reference numerals: tilt angle sensor 1, tension sensor 2, depth sensor 3, hoop 4, cross connecting plate 5, bearing frame 6, transverse shaft 7, transverse bearing 8, longitudinal shaft sleeve 9, longitudinal bearing 10, guide Flow hood 11 , bearing sleeve 12 , wire 13 , test piece 14 .

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings:

Embodiment 1: This underwater dual-axis freely rotating three-sensor linkage force measuring device mainly includes an inclination sensor 1, a tension sensor 2, a depth sensor 3, a linkage support mechanism, a bearing frame 6, a horizontal axis connection mechanism, and a vertical axis connection. Mechanism, shell and specimen 14, the linkage support mechanism connects the inclination sensor 1, the tension sensor 2 and the depth sensor 3 in sequence from bottom to top, the horizontal axis connecting mechanism transversely penetrates the vertical axis connecting mechanism and the linkage supporting mechanism, wherein the linkage supporting mechanism It can be freely rotated around the horizontal axis in the vertical plane. The horizontal axis coupling mechanism, the vertical axis coupling mechanism and the bearing frame 6 are connected and fixed by screws. The entire structure is provided with a shell outside. The specimen and the tensile force sensor are collinear, and the inclination sensor and the tensile force sensor are fixed on the linkage support mechanism, which can simultaneously measure the tensile force value and inclination angle value of the specimen under different working conditions, and use the inclination angle value to correct the tensile force value. It provides convenient and reliable data for the calculation of the hydrodynamic coefficient of the specimen for accurate actual lift and resistance parameters.

Embodiment 2: On the basis of Embodiment 1, as shown in Figure 1, the linkage support mechanism includes a hoop 4 and a cross connecting plate 5, and the hoop 4 is in the shape of a finger ring, and is fixedly connected to the cross connecting plate 5, and the linkage The support mechanism is arranged symmetrically on the upper and lower sides of the tension sensor 2, the cross connecting plates 5 on the upper and lower sides clamp the tension sensor 2, and the inclination sensor 1 and the depth sensor 3 are respectively fixed and connected to the upper and lower hoop 4. Reliably connect the inclination sensor, tension sensor and depth sensor together to form a linkage structure. The structure has the same weight and is symmetrical up and down, so that the linkage part rotates around the horizontal axis under static force and balances itself, eliminating the difference between the sensor's own weight and the shape of the inclination angle. The influence of the error of tension.

Embodiment 3: On the basis of Embodiment 1, the bearing frame 6 is in the shape of a "door", with mounting holes for the vertical axis coupling mechanism on the top, and mounting holes for the horizontal axis coupling mechanism and several screw holes symmetrically on both sides. The bearing frame is effectively and reliably connected to the linkage support structure, the horizontal axis connecting mechanism and the vertical axis connecting mechanism, forming a completely symmetrical structure arrangement.

Embodiment 4: On the basis of Embodiment 1, the transverse shaft coupling mechanism includes a transverse shaft 7 and a transverse bearing 8, and transverse bearings 8 are provided at both ends of the transverse shaft 7, and are installed through the transverse shaft coupling mechanism of the bearing frame 6 hole. The horizontal axis is used to pass through the middle of the tension sensor, and the horizontal bearing is fixed on the bearing frame, so as to realize the function of the three-sensor linkage device being kept on the central axis of the frame and rotating freely along the vertical plane.

Embodiment 5: On the basis of Embodiment 1, the longitudinal axis coupling mechanism includes a longitudinal axis bushing 9 and a longitudinal bearing 10 , and a longitudinal bearing 10 is arranged at the bottom of the longitudinal axis bushing 9 and is fixedly arranged on the bottom of the bearing frame 6 . Vertical shaft mounting holes. The vertical shaft installation hole set on the bearing frame is adopted, and the longitudinal shaft bushing passes through the longitudinal bearing, so as to realize the function of free rotation of the bearing frame along the horizontal plane.

Embodiment 6: On the basis of Embodiment 1, the housing includes a shroud 11 and a bearing sleeve 12, the bearing sleeve 12 is arranged on the top of the shroud 11 and covers the protruding longitudinal axis coupling mechanism, The shroud 11 has an irregular shape and covers the entire structure. The optimized design of the shroud can rotate freely around the load-bearing sleeve, which can reduce the resistance to the greatest extent and also keep the internal eddy current and close to the static water state during towing, reducing the influence of turbulent flow. The reasonable tail opening of the shroud makes the loading test The component drives the sensor to rotate freely around the horizontal axis without interfering with the shroud.

Embodiment 7: On the basis of Embodiment 6, as shown in FIG. 2 , wires 13 of three types of sensors are arranged in the shroud 11 , and the wires 13 communicate with each other through the hollow longitudinal shaft sleeve 9 and the bearing sleeve 12 . The hole extends up to the cabin data collector. The wire set with this structure does not affect the free rotation of the three sensor linkage force measuring devices.

It can be understood that, for those skilled in the art, equivalent replacements or changes to the technical solutions and inventive concepts of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims (7)

1. The utility model provides an underwater biax free rotation three sensors linkage measuring force device which characterized in that: mainly include inclination sensor (1), force sensor (2), degree of depth sensor (3), linkage supporting mechanism, load frame (6), cross axle coupling mechanism, axis of ordinates coupling mechanism, shell and test piece (14), linkage supporting mechanism from supreme connection inclination sensor (1), force sensor (2) and degree of depth sensor (3) of connecting gradually down, cross axle coupling mechanism transversely runs through axis of ordinates coupling mechanism and linkage supporting mechanism, wherein linkage supporting mechanism can wind the cross axle at the perpendicular free rotation, cross axle coupling mechanism, axis of ordinates coupling mechanism pass through screwed connection with load frame (6) and fix, the whole structure outside sets up the shell, test piece (14) are fixed in force sensor (2) and collineation through rings screw.

2. The underwater double-shaft free rotation three-sensor linkage force measuring device according to claim 1, characterized in that: linkage supporting mechanism include staple bolt (4) and cross connecting plate (5), staple bolt (4) are the ring form, and fixed connection cross connecting plate (5), the upper and lower symmetry of linkage supporting mechanism sets up in the upper and lower both sides of force sensor (2), the cross connecting plate (5) of upper and lower both sides block force sensor (2), staple bolt (4) that inclination sensor (1) and depth sensor (3) difference fixed connection set up from top to bottom.

3. The underwater double-shaft free rotation three-sensor linkage force measuring device according to claim 1, characterized in that: the bearing frame (6) is in a shape of a 'door', the top is provided with a longitudinal shaft connecting mechanism mounting hole, and the two sides are symmetrically provided with a transverse shaft connecting mechanism mounting hole and a plurality of screw holes.

4. The underwater double-shaft free rotation three-sensor linkage force measuring device according to claim 1, characterized in that: the transverse shaft connecting mechanism comprises a transverse shaft (7) and transverse bearings (8), the transverse bearings (8) are arranged at the two ends of the transverse shaft (7), and the transverse shaft connecting mechanism penetrates through mounting holes of the bearing frame (6).

5. The underwater double-shaft free rotation three-sensor linkage force measuring device according to claim 1, characterized in that: the longitudinal shaft connecting mechanism comprises a longitudinal shaft sleeve (9) and a longitudinal bearing (10), wherein the longitudinal bearing (10) is arranged at the bottom of the longitudinal shaft sleeve (9) and is fixedly arranged in a longitudinal shaft mounting hole of the bearing frame (6).

6. The underwater double-shaft free rotation three-sensor linkage force measuring device according to claim 1, characterized in that: the shell comprises a guide cover (11) and a bearing sleeve (12), the bearing sleeve (12) is arranged at the top of the guide cover (11) and covers the protruding longitudinal shaft connecting mechanism, and the guide cover (11) is irregular and covers the whole structure.

7. The underwater double-shaft free rotation three-sensor linkage force measuring device according to claim 6, characterized in that: a lead (13) of the sensor is arranged in the air guide sleeve (11), and the lead (13) upwards extends to the cabin data acquisition instrument through a hollow longitudinal shaft sleeve (9) and a through hole of the bearing sleeve (12).

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