Marine geophysical exploration hanging point

Abstract

The hanging point for marine geophysical exploration of the present invention comprises a ferrule with an upper opening, the upper opening of the ferrule penetrates the left and right ends of the ferrule and forms a cavity inside the ferrule, the left and right ends of the ferrule are respectively an inlet end and a stop end, the cavity comprises an inlet cavity and a stop cavity, the diameter of the inlet cavity is larger than the diameter of the positioning point, the size of the stop cavity is larger than the diameter of the main rope and smaller than the diameter of the positioning point, and the ferrule is provided with mutually perpendicular oblong holes A and oblong holes B on both sides of the inlet end, one end of the oblong hole A is connected to the middle of the oblong hole B through an equal diameter through hole, the oblong hole A is perpendicular to the axis of the inlet cavity, one end of the lock tongue penetrates into the oblong hole B through an equal diameter through hole, a compression spring is installed in the oblong hole B and on both sides of the ejector pin, the ejector pin and the lock tongue are fixed by screws, and an earring is provided below the ferrule. The hanging point for marine geophysical exploration of the present invention has a simple structure, is easy to operate, and can realize the rapid attachment and detachment of nodes.

Description

Technical Field

[0001] The invention belongs to the field of marine geophysical exploration operations, and in particular relates to a connecting device for a node and a node rope. Background Art

[0002] Marine geophysical exploration operations use a node acquisition system to collect seismic data, which is first stored in the node after acquisition. After all the acquisition work is completed, the node is recovered and the data is downloaded to complete the entire acquisition operation. When retracting and releasing, each node needs to be hung on the node rope, and the length of the rope between each two nodes depends on the track spacing. When releasing the node, the cable-laying ship moves at a uniform speed along the direction of the seismic survey line, lowers the node rope at a uniform speed, and hangs a node at a certain interval. Through the coordinated control of the ship speed, the length of the node rope, the rope retraction and release speed, and the advance distance of the node release, the node is dropped to the predetermined point on the seabed with the cooperation of the ship driver, navigator, instrument engineer and the retraction and release operator on the rear deck.

[0003] The hanging point for marine geophysical exploration is a device that connects the node and the node rope. When the node is attached and separated, the ship speed and the rope retracting speed need to be reduced to ensure that the operator on the rear deck has sufficient time to complete the node attachment and separation. Reducing the ship speed and the rope retracting speed increases the operation time and cannot achieve fast attachment and separation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hanging point for marine geophysical exploration, which has a simple structure, is easy to operate, and can realize the rapid hanging and separation of nodes.

[0005] The hanging point for marine geophysical exploration of the present invention comprises a ferrule with an upper opening, the upper opening of the ferrule penetrates the left and right ends of the ferrule and forms a cavity inside the ferrule, the left and right ends of the ferrule are respectively an inlet end and a stop end, the cavity comprises an inlet cavity and a stop cavity connected to the inlet cavity, the diameter of the inlet cavity is larger than the diameter of the positioning point, the size of the stop cavity is larger than the diameter of the main rope and smaller than the diameter of the positioning point, and the ferrule is provided with mutually perpendicular oblong holes A and oblong holes B on both sides of the inlet end, and the oblong holes One end of A is connected to the middle of the oblong hole B through an equal-diameter through hole. The oblong hole A is perpendicular to the axis of the inlet cavity, and the oblong hole B is parallel to the axis of the inlet cavity. A lock tongue is arranged in the oblong hole A, and a push pin is arranged in the oblong hole B. The lock tongue is L-shaped, and one end of the lock tongue penetrates into the oblong hole B through the equal-diameter through hole. A compression spring is installed in the oblong hole B and on both sides of the push pin. The push pin and the lock tongue are fixed by screws, and the two ends of the compression spring are respectively against the push pin and the wall of the oblong hole B, and an earring is arranged below the ferrule.

[0006] The hanging point for marine geophysical exploration of the present invention, wherein the cavity further comprises a tapered hole transition cavity, the inlet cavity and the stop cavity transition through the tapered hole transition cavity, and the tapered hole transition cavity contacts the positioning point.

[0007] The present invention provides a hanging point for marine geophysical exploration, wherein a baffle is installed on each of the tops of the front and rear sides of the upper opening of the ferrule, the two baffles are axially symmetrically arranged, the two baffles are embedded in the top of the ferrule and one end of each baffle is connected to the ferrule through a pin, the other end of the baffle installed on the top of the front side of the upper opening of the ferrule is clamped to the rear side of the upper opening of the ferrule, the other end of the baffle installed on the top of the rear side of the upper opening of the ferrule is clamped to the front side of the upper opening of the ferrule, a countersunk hole is provided at the connection between the baffle and the ferrule, a torsion spring is installed in the countersunk hole, and the lower end of the pin passes through the baffle and the torsion spring in sequence and is inserted into the ferrule.

[0008] The present invention provides a hanging point for marine geophysical exploration, wherein the baffle can rotate around a pin when the outer side of the baffle is pressed by an external force, and the upper end openings of the two baffles are opened after the rotation, and after the external force disappears, the baffle returns to its initial state under the action of a torsion spring, and a groove is provided at the clamping position of the sleeve and the baffle, and the end of the baffle is clamped in the groove.

[0009] The hanging point for marine geophysical exploration of the present invention, wherein the inlet cavity is a cavity with a circular hole, and a conical chamfer is arranged at the end of the inlet cavity.

[0010] The hanging point for marine geophysical exploration of the present invention further comprises a main rope, on which a positioning point is fixed, the main rope is clamped in the cavity of the clamping sleeve, and the positioning point is clamped in the transition cavity of the tapered hole.

[0011] The hanging point for marine geophysical exploration of the present invention comprises a ferrule, a locking tongue, a compression spring and a push pin. The upper end opening of the ferrule passes through the left and right ends of the ferrule and forms a cavity inside the ferrule. The left and right ends of the ferrule are respectively an inlet end and a stop end. The cavity comprises an inlet cavity and a stop cavity connected to the inlet cavity. The diameter of the inlet cavity is larger than the diameter of the positioning point. The size of the stop cavity is larger than the diameter of the main rope and smaller than the diameter of the positioning point. The structure is simple. When hanging, an external force presses the push pin, the inlet end is opened, and the main rope enters the cavity of the hanging point. In the process, the main rope moves along the entrance end to the stop end, driving the positioning point into the cavity. At this time, the pressure is no longer applied, the external force disappears, the lock tongue returns to block the positioning point, and the sub-rope connected to the node is connected to the earring, thus realizing the hanging of the node. When separating, the ejector pin is pressed by external force, the entrance end of the hanging point opens, and the positioning point moves toward the entrance end. External force presses the two baffles, the upper end opening opens, and the hanging point is pulled, so that the main rope is detached from the hanging point, and the separation work is completed. The operation is simple, and the rapid hanging and separation of the node is realized.

[0012] In the hanging point for marine geophysical exploration of the present invention, the inlet cavity and the stop cavity are transitioned through a tapered hole transition cavity, and the tapered hole transition cavity contacts the positioning point to limit the positioning point.

[0013] The marine geophysical exploration hanging point of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the hanging point for marine geophysical exploration of the present invention;

[0015] Figure 2 It is a left side view of the hanging point for ocean geophysical exploration of the present invention;

[0016] Figure 3 A top view of the hanging point for marine geophysical exploration of the present invention;

[0017] Figure 4 For along Figure 1 Sectional view of AA in the middle;

[0018] Figure 5 For along Figure 1 Cross-sectional view of the middle BB;

[0019] Figure 6 For along Figure 2 Cross-sectional view of CC;

[0020] Figure 7 For along Figure 1 Stepped cross-section view of the middle FF;

[0021] Figure 8 An exploded view of the hanging point for marine geophysical exploration of the present invention;

[0022] Fig. 9 This is an exploded view of the hanging point for marine geophysical exploration of the present invention from another direction. DETAILED DESCRIPTION

[0023] like Figure 1 , 8 As shown in Figures 9 and 10, the hanging point for marine geophysical exploration of the present invention comprises a ferrule 1, a locking tongue 2, a top pin 3, two compression springs 4, a screw 5, two baffles 6, two pins 7, and two torsion springs 8. The ferrule 1 has a U-shaped upper end opening 11, and the upper end opening 11 of the ferrule 1 passes through the left and right ends of the ferrule 1 and forms a cavity 17 inside the ferrule 1. The right end of the ferrule 1 is an inlet end 12, and the left end is a stop end 13. Figure 4 As shown, the cavity 17 includes an inlet cavity 171, a tapered hole transition cavity 173, and a stop cavity 172 which are connected in sequence. The inlet cavity 171 is a cavity with a circular hole. The end of the inlet cavity 171 is provided with a tapered chamfer. The inlet cavity 171 and the stop cavity 172 transition through the tapered hole transition cavity 173. The tapered hole transition cavity 173 is in contact with the positioning point and acts as a limit on the positioning point. The diameter of the inlet cavity 171 is larger than the diameter of the positioning point. The size of the stop cavity 172 is larger than the diameter of the main rope and smaller than the diameter of the positioning point.

[0024] Combination Figure 8 , 9As shown, the ferrule 1 is provided with a long circular hole A14 and a long circular hole B15 perpendicular to each other at the front and rear sides of the inlet end 12. Figure 2 , 6 As shown in FIG. 8 , the oblong hole A14 is arranged at the front of the ferrule 1, and the oblong hole B is arranged at the rear of the ferrule 1. Figure 5 , 6 As shown, one end of the oblong hole A14 is connected to the middle of the oblong hole B15 through a through hole of equal diameter. The oblong hole A14 is perpendicular to the axis of the inlet cavity 171, and the oblong hole B15 is parallel to the axis of the inlet cavity 171. Figure 5 , 8 As shown in FIG. 9 , the lock tongue 2 is L-shaped. Figure 4 As shown, the lock tongue 2 is installed in the oblong hole A14, the front end of the lock tongue 2 passes through the oblong hole B15 through the through hole of equal diameter, and the top pin 3 is installed in the oblong hole B15. Figure 3 , 5 As shown in , 6, two compression springs 4 are installed in the oblong hole B15 and are located on both sides of the push pin 3. The push pin 3 and the lock tongue 2 are fixed by screws 5. The two ends of the compression spring 4 are respectively against the push pin and the wall of the oblong hole B15. The compression springs 4 are installed on both sides of the lock tongue 2 to balance the force on the lock tongue 2 and improve the locking force of the lock tongue 2.

[0025] like Figure 4 , 8 As shown, the lock tongue 2 includes a vertical portion 21 and a horizontal portion 22 vertically connected to the bottom of the vertical portion, the horizontal portion 22 is cylindrical, and the right side of the vertical portion 21 of the lock tongue 2 is chamfered. When the ejector pin 3 is pressed by external force, the ejector pin 3 drives the lock tongue 2 to move, the front side of the ejector pin 3 is flush with the front side of the ferrule 1, the horizontal portion 22 of the lock tongue 2 is flush with the surface of the circular hole cavity or recessed in the circular hole cavity, and the rear side of the vertical portion 21 of the lock tongue 2 is flush with the rear side of the ferrule 1 or recessed in the rear side of the ferrule 1. After the external force disappears, the ejector pin 3 and the lock tongue 2 return to their original positions through the action of the compression spring 4.

[0026] like Figure 7 , 8 As shown, two baffles 6 are installed on the ferrule 1, at the top of the front and rear sides of the upper opening 11, and the two baffles 6 are arranged axially symmetrically. The two baffles 6 are embedded in the top of the ferrule 1 and one end of each baffle is connected to the ferrule 1 through a pin 7. The other end of the baffle 6 installed on the top of the front side of the upper opening of the ferrule 1 is clamped on the rear side of the upper opening of the ferrule 1, and the other end of the baffle 6 installed on the top of the rear side of the upper opening of the ferrule 1 is clamped on the front side of the upper opening of the ferrule 1, as shown in FIG. Figure 8 , 9As shown, a groove 19 is provided at the clamping position of the ferrule 1 and the baffle, and the end of the baffle 6 is clamped in the groove 19. A countersunk hole is provided at the connection between the baffle and the ferrule, i.e., the position of the pin hole. The torsion spring 8 is installed in the countersunk hole 18, and the lower end of the pin 7 passes through the baffle 6 and the torsion spring 8 in sequence and is inserted into the ferrule 1. The upper plane of the hinged end of the baffle 6 and the ferrule 1 is higher than the upper plane of the ferrule 1 and is flush with the ejector pin 3 or slightly higher than the upper plane of the ejector pin 3. By pressing the outer side of the hinged ends of the two baffles 6 with external force, the two baffles 6 rotate along the pin 7, and the clamping end of the baffle 6 hinged to the rear side of the upper opening is disengaged from the groove 19 located at the front side of the upper opening and is flush with the rear side of the upper opening. The baffle 6 no longer blocks the upper opening, and the upper opening 11 is in an open state. When there is no external force pressing, the two baffles 6 block the upper opening. When the positioning point accidentally detaches from the hanging point, the main rope is still in the hanging point, and the main rope squeezes the baffle 6. Since the baffle 6 is engaged with the ferrule, the main rope will not detach from the upper end of the hanging point.

[0027] The hanging point for marine geophysical exploration of the present invention may also include a main rope, which is clamped in the cavity 17 of the clamping sleeve 1. A positioning point is fixed on the main rope, one end of which is conical and clamped in the tapered hole transition cavity 173.

[0028] like Figure 1 As shown, an earring 16 is provided below the ferrule 1, and the earring 16 is used to connect a sub-rope, and the sub-rope connects the geophysical exploration node.

[0029] The use process of the marine geophysical exploration hanging point of the present invention is as follows:

[0030] Hanging process: press the outer side of the hinged end of the two baffles 6 of the hanging point by external force, open the U-shaped upper end opening 11, push the hanging point, the main rope enters the circular hole cavity of the hanging point through the U-shaped upper end opening 11, the main rope moves axially (moves to the left), press the front side of the top pin 3 of the hanging point by external force, open the entrance end 12 of the hanging point, the main rope drives the positioning point, enters the circular hole cavity through the conical chamfer of the entrance end 12 of the hanging point, the external force disappears, the opening is closed by the baffle 6, and the lock tongue 2 returns to block the positioning point. The main rope drives the hanging point and the node into the ocean for geophysical exploration.

[0031] Separation process: After the main rope drives the hanging point and the node to enter the cabin deck, the front side of the top pin 3 is pressed by external force, the hanging point entrance end 12 is opened, the positioning point is separated from the hanging point position, the two baffles 6 are pressed by external force to open the U-shaped opening, the hanging point is pulled, the main rope is separated from the hanging point, and the separation work is completed.

[0032] The hanging point for marine geophysical exploration of the present invention has a simple structure and is easy to operate. It can quickly connect the node with the node rope at the normal speed of the cable-laying ship to retract and release the node rope without reducing the speed, thereby reducing the hanging and separation operation time, improving work efficiency, and reducing the labor intensity of the operators on the rear deck to retract and release.

[0033] The hanging point for ocean geophysical exploration of the present invention is the basis for realizing automatic retracting and releasing operation.

[0034] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A hanging point for marine geophysical exploration, characterized in that: The invention comprises a ferrule (1) having an upper opening (11), wherein the upper opening (11) of the ferrule (1) penetrates the left and right ends of the ferrule (1) and forms a cavity (17) inside the ferrule (1), wherein the left and right ends of the ferrule (1) are respectively an inlet end (12) and a stop end (13), wherein the cavity (17) comprises an inlet cavity (171) and a stop cavity (172) connected to the inlet cavity, wherein the diameter of the inlet cavity (171) is larger than the diameter of the positioning point, and the size of the stop cavity (172) is larger than the diameter of the main rope and smaller than the diameter of the positioning point, and mutually perpendicular grooves are arranged on the ferrule (1) and located on both sides of the inlet end (12). The oblong hole A (14) and the oblong hole B (15) are connected at one end of the oblong hole A (14) to the middle of the oblong hole B (15) through a through hole of equal diameter. The oblong hole A (14) is perpendicular to the axis of the inlet cavity (171), and the oblong hole B (15) is parallel to the axis of the inlet cavity (171). A lock tongue (2) is arranged in the oblong hole A (14), and a push pin (3) is arranged in the oblong hole B (15). The lock tongue (2) is L-shaped, and one end of the lock tongue (2) penetrates into the oblong hole B (15) through the through hole of equal diameter. A compression spring (4) is installed in the oblong hole B (15) and on both sides of the push pin (3). The push pin ( 3) is fixed to the lock tongue (2) by means of screws (5), the two ends of the compression spring (4) are respectively pressed against the ejector pin and the wall of the oblong hole B (15), and an earring (16) is arranged below the ferrule (1); a baffle (6) is respectively installed on the top of the front and rear sides of the upper opening (11) of the ferrule (1), and the two baffles (6) are arranged axially symmetrically, the two baffles (6) are embedded in the top of the ferrule (1) and one end thereof is respectively connected to the ferrule (1) by means of pins (7), the other end of the baffle (6) installed on the top of the front side of the upper opening of the ferrule is clamped on the rear side of the upper opening of the ferrule, and the baffle installed on the top of the rear side of the upper opening of the ferrule The other end of (6) is clamped to the front side of the upper opening of the clamping sleeve, and a countersunk hole is provided at the connection between the baffle plate and the clamping sleeve, and a torsion spring (8) is installed in the countersunk hole. The lower end of the pin (7) passes through the baffle plate (6) and the torsion spring (8) in sequence and is inserted into the clamping sleeve (1); when the outer side of the baffle plate (6) is pressed by external force, the baffle plate (6) can rotate around the pin (7), and the upper opening (11) of the two baffle plates (6) is opened after the rotation. After the external force disappears, the baffle plate returns to its initial state under the action of the torsion spring (8), and a groove (19) is provided at the clamping position of the clamping sleeve (1) and the baffle plate (6), and the end of the baffle plate (6) is clamped in the groove (19).

2. The hanging point for marine geophysical exploration according to claim 1, characterized in that: The mold cavity (17) further comprises a tapered hole transition mold cavity (173), the inlet mold cavity (171) and the stop mold cavity (172) transition through the tapered hole transition mold cavity (173), and the tapered hole transition mold cavity (173) contacts the positioning point.

3. The hanging point for marine geophysical exploration according to claim 2, characterized in that: The inlet cavity (171) is a cavity with a circular hole, and a conical chamfer is provided at the end of the inlet cavity (171).

4. The hanging point for marine geophysical exploration according to claim 3, characterized in that: It also comprises a main rope, on which a positioning point is fixed, the main rope is clamped in the cavity (17) of the clamping sleeve (1), and the positioning point is clamped in the tapered hole transition cavity (173).

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