Spherical standard target body fixing device and method

Abstract

The invention relates to a spherical standard target body fixing device which is carried on a ship body, generally, the ship body is an unmanned ship, and the fixing device comprises a metal induction proximity switch, a compression spring, a connecting rod, a positioning buckle, a horn-shaped protective cover and a guide mechanism; wherein the trumpet-shaped protective cover is vertically arranged, the trumpet-shaped protective cover is in a trumpet shape with a small upper end opening and a large lower end opening, and the positioning buckle is fixedly arranged outside the upper end of the trumpet-shaped protective cover; the guide mechanism is vertically arranged right above the horn-shaped protective cover, the guide mechanism is hollow, and the lower end of the guide mechanism extends into an opening in the upper end of the horn-shaped protective cover and is in up-down sliding fit with the horn-shaped protective cover; an annular protrusion is annularly arranged at the upper end of the guide mechanism. Spherical standard target bodies of different sizes can be firmly fixed, the defects that in a current fixing method, the stroke of a lifting mechanism is short, and a protection cylinder is not flexible to replace are overcome, operation is easy, implementation is easy, and adaptability is high.

Description

Technical Field:

[0001] The present invention belongs to the technical field of unmanned marine equipment, and relates to a fixing device and method for a spherical standard target body. Background Art:

[0002] The performance verification of underwater acoustic equipment under actual working conditions is mostly carried out on lakes or at sea, and testers need to conduct tests on board. With the development of unmanned equipment technology, using unmanned boats for lake and sea tests has become a trend. Testers do not need to board the boat for operation, but only need to remotely control the unmanned boat and the measuring equipment on board from the shore to complete the electroacoustic parameter test of the underwater acoustic equipment, greatly improving the test efficiency and the safety of testers.

[0003] By carrying a spherical standard target body on the unmanned boat, it is possible to measure multiple parameters such as the directivity, detection distance, and detection accuracy of the underwater acoustic equipment. During measurement, the spherical standard target body needs to be lowered into the water through a winch, and after the measurement is completed, the spherical standard target body is retrieved through the winch. The spherical standard target body is large in size and heavy in weight. If it is only retrieved without being fixed, during the process of the unmanned boat sailing to the next measurement point or on the return journey, due to the action of wind and waves and inertia, the spherical standard target body will swing left and right or back and forth, hitting the hull, causing damage to the hull of the unmanned boat and the spherical standard target body itself, and affecting the normal progress of the measurement work.

[0004] Currently, there are two common methods for fixing unmanned boat equipment. One is to make a hard connection with the equipment through a lifting mechanism. The equipment is firmly fixed, but the lifting distance is short, and it cannot meet the requirement of the underwater depth of dozens of meters for the spherical standard target body. The other is to make a soft connection with the equipment through the winch cable, and a protective cylinder is set on the unmanned boat. This method is applicable to equipment with light weight and small size, such as hydrophones. Facing a series of spherical standard target bodies with weights ranging from light to heavy and sizes ranging from small to large, due to the fixed size of the protective cylinder, when the size of the spherical standard target body is smaller than the size of the protective cylinder, the shaking of the spherical standard target body still cannot be avoided; when the size of the spherical standard target body is larger than the size of the protective cylinder, the spherical standard target body cannot enter the cylinder and cannot play a fixing role. Therefore, this method is not applicable to the fixing of spherical standard target bodies of different sizes. Summary of the Invention:

[0005] The technical problem to be solved by the present invention is to provide a fixing device and method for a spherical standard target body. This method combines a horn-shaped protective cover with devices such as springs and metal inductive proximity switches to achieve the firm fixation of spherical standard target bodies of different sizes, avoiding the disadvantages of short stroke of the lifting mechanism and inflexible replacement of the protective cylinder in the current fixing methods. It is simple to operate, easy to implement, and has strong adaptability, providing a new technical means for the fixation of spherical standard target bodies on unmanned boats.

[0006] The technical solution of the present invention is to provide a fixing device for a spherical standard target body. This fixing device is mounted on a hull, and generally, this hull is an unmanned ship. The fixing device includes a metal inductive proximity switch, a compression spring, a connecting rod, a positioning buckle, a flared protective cover, and a guiding mechanism. Among them,

[0007] The flared protective cover is arranged vertically, and its shape is like a horn with a small upper opening and a large lower opening. The positioning buckle is fixedly arranged outside the upper end of the flared protective cover.

[0008] The guiding mechanism is arranged vertically directly above the flared protective cover. The inside of the guiding mechanism is hollow. The lower end of the guiding mechanism extends into the upper opening of the flared protective cover and is in vertical sliding fit with the flared protective cover. There is an annular protrusion provided around the upper end of the guiding mechanism.

[0009] The lower end of the connecting rod is connected to the positioning buckle. The upper end of the connecting rod passes upward through the annular protrusion of the guiding mechanism and is fixedly connected to the hull deck. The compression spring is sleeved on the connecting rod between the positioning buckle and the annular protrusion.

[0010] The metal inductive proximity switch is electrically connected to the winch switch on the hull. The upper end of the metal inductive proximity switch is installed on the annular protrusion of the guiding mechanism. The lower end of the metal inductive proximity switch is suspended and faces downward to the positioning buckle. The metal inductive proximity switch is used to set the induction distance. When the distance between the lower end of the metal inductive proximity switch and the positioning buckle reaches the preset induction distance, the winch stops the wire-receiving action.

[0011] Preferably, a groove is provided on the outer surface of the upper end of the flared protective cover, and the positioning buckle is horizontally clamped in the groove.

[0012] Preferably, the positioning buckle is composed of two symmetric half-buckles. Each of the two half-buckles is provided with a vertical hole and two horizontal holes. The vertical hole is used for installing the connecting rod, and the horizontal holes are used for the splicing and fixing of the two half-buckles.

[0013] Preferably, two symmetric guiding holes and a positioning hole are provided on the annular protrusion.

[0014] Preferably, the upper end of the metal inductive proximity switch is installed in the positioning hole of the annular protrusion.

[0015] Preferably, there are two connecting rods, which are respectively passed through the two guiding holes of the annular protrusion.

[0016] The present invention also provides a using method of the fixing device for a spherical standard target body as described above. The operation is carried out according to the following steps.

[0017] Step 1, install the positioning buckle on the flared protective cover for positioning.

[0018] Step 2, install the metal inductive proximity switch on the guiding mechanism.

[0019] Step 3: Install the spring on the connecting rod.

[0020] Step 4: Connect the lower end of the connecting rod to the positioning buckle, and pass the upper end of the connecting rod through the annular protrusion on the guiding mechanism and then connect it to the hull.

[0021] Step 5: The cable of the cable car carried on the hull passes through the guiding mechanism and the horn-shaped protective cover in sequence and then is connected to the spherical standard target body; the winch winds up the cable. When the spherical standard target body contacts the horn-shaped protective cover and continues to wind up the cable, the spring is compressed and the positioning buckle rises. When the positioning buckle approaches the metal induction proximity switch to a preset distance, the winch stops winding up the cable, and the fixation of the spherical standard target body is completed.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] By combining the horn-shaped protective cover with devices such as the metal induction proximity switch and the spring, it is possible to firmly fix spherical standard target bodies of different sizes without designing cylindrical barrels of different sizes, and the automatic shutdown of the winch can be achieved, avoiding the disadvantages of short stroke of the lifting mechanism and inflexible replacement of the protective cylinder in the current fixing method. The operation is simple, easy to implement, and has strong adaptability, making up for the deficiencies of the current fixing device and method for spherical standard target bodies on unmanned ships. Description of the drawings:

[0024] Figure 1 It is a schematic diagram of the device composition of an embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the unfixed state of the spherical standard target body of an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the fixed state of the spherical standard target body of an embodiment of the present invention.

[0027] Figure 4 It is a diagram of the usage state of the present invention. In the figure, 1 is the metal induction proximity switch; 2 is the spring; 3 is the connecting rod; 4 is the positioning buckle; 5 is the horn-shaped protective cover; 6 is the guiding mechanism; 7 is the nut. Specific implementation manners:

[0028] The present invention will be further described below in conjunction with the drawings with respect to the specific implementation manners:

[0029] As Figure 1 shown, a fixing device for a spherical standard target body of the present invention is carried on the hull. In this embodiment, it is an unmanned ship. The fixing device includes a metal induction proximity switch 1, a compression spring 2, a connecting rod 3, a positioning buckle 4, a horn-shaped protective cover 5, and a guiding mechanism 6; wherein,

[0030] The horn-shaped protective cover 5 is vertically arranged, and its shape is like a horn with a small upper opening and a large lower opening. The positioning buckle 4 is fixedly arranged outside the upper end of the horn-shaped protective cover. In this embodiment, in order to facilitate the installation and fixation of the fixing buckle 4, a groove is provided on the outer surface of the upper end of the horn-shaped protective cover 5, and the positioning buckle 4 is horizontally clamped in the groove. Moreover, for convenient use, the positioning buckle 4 is composed of two symmetrical half buckles. At the same time, the diameter of the lower opening of the horn-shaped protective cover 5 is not less than the diameter of the largest spherical standard target body, and the diameter of its upper opening is less than the diameter of the smallest spherical standard target body. More reasonably, the reduction amplitude of the lower end is relatively large so as to adapt to large target bodies of various sizes to quickly contact the horn-shaped protective cover 5, and the reduction amplitude is smaller towards the upper part, that is, the diameter sizes of the upper part of the horn-shaped protective cover 5 are not much different.

[0031] The guiding mechanism 6 is vertically arranged directly above the horn-shaped protective cover 5. The guiding mechanism 6 is hollow inside. The lower end of the guiding mechanism 6 extends into the upper opening of the horn-shaped protective cover 5 and is in vertical sliding fit with the horn-shaped protective cover 5, so that the lower end of the guiding mechanism 6 can move up and down relative to the horn-shaped protective cover 5. An annular protrusion is also provided around the upper end of the guiding mechanism 6.

[0032] The connecting rod 3 is a screw rod or a smooth rod with a thread at the end. The connecting rod 3 is in limit connection with the positioning buckle 4, that is, the upper end of the connecting rod passes through the positioning buckle and is limited by its lower end to prevent the lower end of the connecting rod from directly passing through the positioning buckle 4 to form a limit. The upper end of the connecting rod 3 then continues to pass upward through the annular protrusion of the guiding mechanism 6 and the deck of the unmanned ship and is locked with a nut 7. The compression spring 2 is sleeved on the connecting rod 3 between the positioning buckle 4 and the annular protrusion.

[0033] The metal inductive proximity switch 1 is electrically connected to the winch switch on the unmanned ship. The upper end of the metal inductive proximity switch 1 is installed on the annular protrusion of the guiding mechanism 6. The lower end of the metal inductive proximity switch 1 is suspended and faces the lower positioning buckle 4. The metal inductive proximity switch 1 is used to set the induction distance. When the distance between the lower end of the metal inductive proximity switch 1 and the positioning buckle 4 reaches the preset induction distance, the winch stops the wire-receiving action. The process status can be referred to Figure 2 、 3 。

[0034] As an implementation manner, two symmetrical guiding holes and a positioning hole are provided on the annular protrusion. The upper end of the metal inductive proximity switch is installed in the positioning hole of the annular protrusion. There are two connecting rods, which are respectively passed through the two guiding holes of the annular protrusion.

[0035] The usage method of the above spherical standard target body fixing device can be operated according to the following steps.

[0036] Step 1: Install the positioning buckle in the groove of the horn-shaped protective cover for positioning;

[0037] Step 2: Install the metal inductive proximity switch on the annular protrusion of the guiding mechanism, with its sensing end facing downwards;

[0038] Step 3: Pass the upper end of the connecting rod through the positioning buckle and then sleeved the spring on the connecting rod;

[0039] Step 4: The upper end of the connecting rod continues to pass upwards through the guiding hole of the annular protrusion on the guiding mechanism, and then is connected and fixed to the unmanned ship deck by using a nut;

[0040] Step 5: The cable of the cable car carried on the hull passes through the guiding mechanism and the horn-shaped protective cover in sequence and then is connected to the spherical standard target; the winch winds up the cable. After the spherical standard target contacts the horn-shaped protective cover, continue to wind up the cable, the spring compresses, and the positioning buckle rises. When the positioning buckle approaches the metal inductive proximity switch to a preset distance, the winch stops winding up the cable, and the fixation of the spherical standard target is completed.

[0041] The above only describes the preferred embodiments of the present invention, but it should not be construed as a limitation on the claims. Any equivalent process transformation using the specification of the present invention is included in the patent protection scope of the present invention.

Claims

1. A spherical standard target body fixing device, which is mounted on a ship's hull, characterized in that: The fixing device includes a metal inductive proximity switch, a compression spring, a connecting rod, a positioning buckle, a bell-shaped protective cover and a guiding mechanism; wherein, The bell-shaped protective cover is arranged vertically, and its shape is bell-shaped with a small upper opening and a large lower opening. The positioning buckle is fixedly arranged outside the upper end of the bell-shaped protective cover; The guiding mechanism is arranged vertically directly above the bell-shaped protective cover. The inside of the guiding mechanism is hollow. The lower end of the guiding mechanism extends into the upper opening of the bell-shaped protective cover and is slidably matched with the bell-shaped protective cover up and down; an annular protrusion is provided around the upper end of the guiding mechanism; The lower end of the connecting rod is connected to the positioning buckle, the upper end of the connecting rod passes upward through the annular protrusion of the guiding mechanism and is fixedly connected to the hull deck, and the compression spring is sleeved on the connecting rod between the positioning buckle and the annular protrusion; The metal inductive proximity switch is electrically connected to the winch switch on the hull. The upper end of the metal inductive proximity switch is installed on the annular protrusion of the guiding mechanism. The lower end of the metal inductive proximity switch is suspended and faces the positioning buckle below. The metal inductive proximity switch is used to set the induction distance. When the distance between the lower end of the metal inductive proximity switch and the positioning buckle reaches the preset induction distance, the winch stops the wire-receiving action.

2. The spherical standard target body fixing device according to claim 1, characterized in that: A groove is provided on the outer surface of the upper end of the bell-shaped protective cover, and the positioning buckle is horizontally clamped in the groove.

3. The spherical standard target body fixing device according to claim 2, characterized in that: The positioning buckle is composed of two symmetrical half buckles.

4. The spherical standard target body fixing device according to claim 1, characterized in that: Two symmetrical guiding holes and a positioning hole are provided on the annular protrusion.

5. The spherical standard target body fixing device according to claim 4, characterized in that: The upper end of the metal inductive proximity switch is installed in the positioning hole of the annular protrusion.

6. The spherical standard target body fixing device according to claim 4, characterized in that: There are two connecting rods, which are respectively passed through the two guiding holes of the annular protrusion.

7. A method for using the spherical standard target body fixing device according to any one of claims 1-6, characterized in that: Operate according to the following steps, Step 1, install the positioning buckle on the bell-shaped protective cover for positioning; Step 2, install the metal inductive proximity switch on the guiding mechanism; Step 3, install the spring on the connecting rod; Step 4, connect the lower end of the connecting rod to the positioning buckle, and pass the upper end of the connecting rod through the annular protrusion on the guiding mechanism and then connect it to the hull; Step 5, the cable of the cable car carried on the hull passes through the guiding mechanism and the bell-shaped protective cover in sequence and then is connected to the spherical standard target body; the winch takes in the wire, so that the spherical standard target body contacts the bell-shaped protective cover and then continues to take in the wire. The spring is compressed, the positioning buckle rises. When the positioning buckle approaches the metal inductive proximity switch to the preset distance, the winch stops taking in the wire, and the fixing of the spherical standard target body is completed.

Images