A seismic detection device for oil exploration

Abstract

The invention relates to the technical field of oil exploration equipment, in particular to an oil exploration seismic detection device, comprising a hull, a lifting buoy arranged behind the hull, a plurality of air guns arranged at equal intervals below the lifting buoy along the length direction of the lifting buoy, and a gun cable arranged below the lifting buoy, wherein the gun cable is connected to each air gun, and further comprising a bearing support plate fixedly arranged at the tail of the hull, a transmission mechanism and a pressing mechanism, wherein the transmission mechanism has a rotating output end and a power input end, and the pressing mechanism comprises a rotating branch pipe rotatably arranged on the bearing support plate, a pressing screw rod coaxially rotatably arranged in the rotating branch pipe, a pressing plate fixedly arranged at the end of the pressing screw rod, and two telescopic guide rods symmetrically arranged on the pressing plate, wherein the device can automatically move the pressing screw rod downward after the lifting buoy dives, and then press the gun cable below the water surface through the pressing plate, so that the water entry point of the gun cable is close to the tail of the hull, thereby preventing the gun cable from colliding with floating ice when the hull turns.

Description

Technical Field

[0001] The present invention relates to the technical field of oil exploration equipment, in particular to oil exploration earthquake detection equipment. Background Art

[0002] Petroleum is a natural, viscous, dark brown (sometimes yellow, green or even black) liquid, mainly composed of a mixture of various alkanes, cycloalkanes and aromatic hydrocarbons. It is one of the main objects of geological exploration and is known as the "blood of industry". There are two theories about the formation of petroleum: biological sedimentation and petrochemical oil. The former is more widely accepted, believing that petroleum is gradually formed by organisms in ancient oceans or lakes over a long geological period, under high temperature and high pressure underground, through a series of complex biochemical, chemical and physical changes. The world's marine oil resources account for 34% of the world's total oil resources. This proportion shows the importance of marine oil in the global energy supply.

[0003] The patent with the publication number (CN111856582B) discloses an air gun seismic source towing system and a marine geological exploration ship, the air gun seismic source towing system comprises a main buoy, an additional buoy and a ballast adjustment assembly, the additional buoy and the ballast adjustment assembly are both arranged on the outer wall of the main buoy, and a water-containing chamber is formed inside the additional buoy; the ballast adjustment assembly comprises a water pump, the water inlet of the water pump is located outside the additional buoy, and the water outlet of the water pump is connected to the inside of the water-containing chamber; when the water pump injects water into the water-containing chamber, the sum of the gravity of the water in the main buoy, the additional buoy and the water in the water-containing chamber can be greater than the sum of the buoyancy of the main buoy and the additional buoy; when the water pump pumps the water in the water-containing chamber to the outside, the sum of the gravity of the main buoy and the additional buoy is less than the sum of the buoyancy of the main buoy and the additional buoy. The present invention solves the technical problem that ice floating on the water surface is easy to damage the gun cable and the air gun seismic source float when towing the air gun array.

[0004] However, the gun cable pressing assembly in the above patent is driven by a hydraulic cylinder. In such a harsh environment with extremely low temperature, the service life of the device will inevitably be affected. Therefore, a new type of equipment is needed to solve the above problem. Summary of the invention

[0005] Based on this, it is necessary to provide a petroleum exploration seismic detection equipment to address the existing technical problems.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is: an oil exploration seismic detection equipment, including a hull, a lifting buoy arranged behind the hull, a plurality of air guns arranged at equal intervals below the lifting buoy along the length direction of the lifting buoy, and a gun cable arranged below the lifting buoy, the gun cable is connected to each air gun, and also includes a bearing support plate fixedly arranged at the tail of the hull, a transmission mechanism and a pressing mechanism, the transmission mechanism has a rotating output end and a power input end, the pressing mechanism includes a rotating branch pipe rotatably arranged on the bearing support plate, a pressing screw coaxially rotatably arranged in the rotating branch pipe, a pressing plate fixedly arranged at the end of the pressing screw, and two telescopic guide rods symmetrically arranged on the pressing plate, one end of the telescopic guide rod is fixedly connected to the bottom of the bearing support plate, and the other end is fixedly connected to the pressing plate, the pressing screw is threadedly connected to the rotating branch pipe, the power input end of the transmission mechanism is transmission-connected to the lifting buoy, and the rotating branch pipe is transmission-connected to the rotating output end of the transmission mechanism.

[0007] Furthermore, the transmission mechanism also includes a rope ring fixedly arranged at the end of the lifting float, a limiting rope with one end fixedly arranged on the rope ring, a first slide rail fixedly arranged on the bearing support plate, a transmission rack elastically slidably arranged on the first slide rail, and a transmission gear plate rotatably arranged beside the first slide rail. The transmission gear plate is rotatably arranged on the bearing support plate through an axle seat, the transmission rack is meshed with the transmission gear plate, the transmission rack is transmission-connected to the other end of the limiting rope, the transmission gear plate is transmission-connected to the rotating branch pipe, and the transmission rack is the power input end of the transmission mechanism.

[0008] Furthermore, a limit support plate is fixedly arranged at the end of the first slide rail, a limit tension spring is arranged on the limit support plate, one end of the limit tension spring is fixedly connected to the limit support plate, and the other end is fixedly connected to the transmission rack.

[0009] Furthermore, the transmission mechanism also includes a rotating support fixedly arranged beside the transmission toothed disc, a transfer shaft rotatably arranged on the rotating support, a transfer gear and a driving wheel coaxially fixedly arranged on the transfer shaft, a worm wheel coaxially fixedly connected to the rotating branch pipe, a positioning support plate symmetrically fixedly arranged on the bearing support plate, a worm rotatably arranged on two positioning support plates, a bevel gear frame fixedly arranged on one positioning support plate and a driven wheel rotatably arranged on the bevel gear frame, a bevel gear group is arranged on the bevel gear frame, the driven wheel is coaxially fixedly connected to one of the bevel teeth, the worm is coaxially fixedly connected to the other bevel tooth, the worm is meshed with the worm wheel, a transmission belt is arranged between the driven wheel and the driving wheel, the transfer gear is meshed with the transmission toothed disc, and the worm wheel is the rotating output end of the transmission mechanism.

[0010] Furthermore, the transmission mechanism also includes a second slide rail fixedly arranged beside the first slide rail, a movable box slidably arranged on the second slide rail and a positioning box fixedly arranged at the end of the second slide rail, a movable pulley group is arranged in the movable box, a fixed pulley group is arranged in the positioning box, a wheel rope is wound around the movable pulley group and the fixed pulley group, one end of the wheel rope is fixedly connected to the positioning box, and the other end is fixedly connected to the limiting rope, and the movable box is fixedly connected to the transmission rack.

[0011] Furthermore, the transmission mechanism also includes a limiting long box fixedly arranged on the side of the positioning box away from the movable box and a transfer slider slidably arranged on the limiting long box, one side of the transfer slider is fixedly connected to the wheel rope, and the other side is fixedly connected to the limiting rope.

[0012] Furthermore, the transmission mechanism also includes a supporting frame, a top plate, a rope frame, a limiting slip ring, a limiting block and a top column. A sliding transverse groove is provided on the limiting long box along its length direction. The supporting frame is elastically slidably arranged in the sliding transverse groove. A sliding hole is provided at one end of the limiting long box close to the positioning box. A sliding vertical groove is provided on the limiting long box along its height direction. The sliding vertical groove is located at one end of the limiting long box with the sliding hole. The limiting block is elastically slidably arranged in the sliding vertical groove. A top column is fixedly arranged on the top of the limiting block. A contact inclined groove is provided in the middle of one side of the limit block, a top plate is fixedly provided at one end of the support frame close to the limit block, the size of the top plate matches the size of the contact inclined groove, a rope rack is provided at one end of the support frame away from the top plate, a limit slip ring is fixedly provided on the rope rack, the rope rack is rotatably connected to one end of the support frame through a torsion spring, a locking hole is provided at the bottom of the transfer slider, the top column and the axis of the sliding hole are colinear, the top column and the sliding hole are slidably matched, the diameter of the locking hole is slightly larger than the diameter of the top column, and the limit rope passes through the limit slip ring.

[0013] Furthermore, a protective cover is fixedly provided on the bearing support plate, a protective cylinder is fixedly provided on the protective cover, and the axis of the protective cylinder is colinear with the axis of the pressing screw.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Firstly, this device uses a purely mechanical structure to automatically press the gun cable below the water surface when the lifting buoy dives, so that the entry point of the gun cable is close to the stern, preventing the gun cable from colliding with floating ice when the hull turns, preventing equipment from malfunctioning under extreme conditions, extending the service life of the equipment, and reducing equipment maintenance costs;

[0016] Second: This device makes the transfer slider slide on the limit length box to ensure that when the limit rope generates tension, the transfer slider can stably drive the wheel rope to move;

[0017] Thirdly, the device amplifies the tension of the limit rope through the labor-saving structure of the movable pulley group and the fixed pulley group, so that the device can eventually drive the pressing screw rod to move downward;

[0018] Fourthly, by setting a top column, the device ensures that when the limit rope is stretched normally, the transfer slider does not move. When the limit rope tilts as the lifting buoy dives, the transfer slider is automatically unlocked so that the tension generated by the limit rope can be transmitted normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment;

[0020] Figure 2 is a side view of the lifting buoy of the embodiment when floating on the sea surface;

[0021] Figure 3 is a side view of the lifting buoy of the embodiment diving;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the transmission gear disc of the embodiment;

[0023] Figure 5 is a schematic diagram of the three-dimensional structure of the pressing plate of the embodiment;

[0024] Figure 6 is a three-dimensional structural schematic diagram of the transmission mechanism of the embodiment;

[0025] Figure 7 is a schematic diagram of the three-dimensional structure of the transmission rack of the embodiment;

[0026] Figure 8 is a schematic diagram of the three-dimensional structure of the limit long box of the embodiment;

[0027] Fig. 9 is a cross-sectional view of the interior of the position-limiting long box of the embodiment;

[0028] Fig.10 1 is a schematic diagram of the exploded three-dimensional structure of the support frame and the limit long box of the embodiment;

[0029] Fig.11 It is a schematic diagram of the three-dimensional structure decomposition of the transfer slider and the limit block of the embodiment.

[0030] The numbers in the figure are: 1, hull; 2, lifting buoy; 3, air gun; 4, gun cable; 5, bearing support plate; 6, protective cover; 7, rope ring; 8, transmission gear plate; 9, rotating support; 10, transfer shaft; 11, transfer gear; 12, driving wheel; 13, transmission belt; 14, positioning support plate; 15, worm; 16, worm wheel; 17, umbrella gear rack; 18, driven wheel; 19, first slide rail; 20, transmission rack; 21, limit tension spring; 22, limit support plate; 23, first Two slide rails; 24. Movable box; 25. Wheel rope; 26. Positioning box; 27. Limiting length box; 28. Transfer slider; 29. ​​Limiting rope; 30. Locking hole; 31. Sliding hole; 32. Sliding horizontal groove; 33. Support frame; 34. Top plate; 35. Rope rack; 36. Limiting slip ring; 37. Sliding vertical groove; 38. Limiting block; 39. Top column; 40. Touching inclined groove; 41. Protective tube; 42. Rotating branch pipe; 43. Pressing screw; 44. Pressing plate; 45. Telescopic guide rod. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] refer to Figures 1 to 11 :

[0033] A petroleum exploration seismic detection equipment comprises a hull 1, a lifting buoy 2 arranged behind the hull 1, a plurality of air guns 3 arranged at equal intervals below the lifting buoy 2 along the length direction of the lifting buoy 2, and a gun cable 4 arranged below the lifting buoy 2, wherein the gun cable 4 is connected to each air gun 3, and also comprises a bearing support plate 5 fixedly arranged at the tail of the hull 1, a transmission mechanism and a pressing mechanism, wherein the transmission mechanism has a rotation output end and a power input end, and the pressing mechanism comprises a rotating branch pipe 42 rotatably arranged on the bearing support plate 5, a pressing screw 43 coaxially rotatably arranged in the rotating branch pipe 42, a pressing plate 44 fixedly arranged at the end of the pressing screw 43, and two telescopic guide rods 45 symmetrically arranged on the pressing plate 44, wherein one end of the telescopic guide rod 45 is fixedly connected to the bottom of the bearing support plate 5, and the other end is fixedly connected to the pressing plate 44, the pressing screw 43 is threadedly connected to the rotating branch pipe 42, the power input end of the transmission mechanism is transmission-connected to the lifting buoy 2, and the rotating branch pipe 42 is transmission-connected to the rotation output end of the transmission mechanism.

[0034] When the device is in operation, the gun cable 4, the lifting buoy 2 and each air gun 3 are released from the stern of the hull 1, and each air gun 3 is towed by the gun cable 4. At this time, the lifting buoy 2 floats on the water surface in a natural state, and then the lifting buoy 2 dives. Then the diving movement of the lifting buoy 2 drives the power input end of the transmission mechanism to operate, and then the rotation output end of the transmission mechanism is started, and drives the rotating branch pipe 42 to rotate. The rotation of the rotating branch pipe 42 drives the pressing screw 43 to move downward along the axis of the rotating branch pipe 42. During this process, the telescopic guide rod 45 extends adaptively, and the pressing screw 43 moves downward to drive the pressure plate 44 to move, so that the pressure plate 44 presses the gun cable 4 below the water surface, so that the entry point of the gun cable 4 is close to the stern, preventing the gun cable 4 from colliding with floating ice when the hull 1 turns.

[0035] In order to show the detailed structure of the transmission mechanism, the following features are also set:

[0036] The transmission mechanism also includes a rope ring 7 fixedly arranged at the end of the lifting buoy 2, a limiting rope 29 with one end fixedly arranged on the rope ring 7, a first slide rail 19 fixedly arranged on the bearing support plate 5, a transmission rack 20 elastically slidably arranged on the first slide rail 19, and a transmission gear plate 8 rotatably arranged next to the first slide rail 19. The transmission gear plate 8 is rotatably arranged on the bearing support plate 5 through an axle seat, and the transmission rack 20 is meshed with the transmission gear plate 8. The transmission rack 20 is transmission-connected to the other end of the limiting rope 29, and the transmission gear plate 8 is transmission-connected to the rotating branch pipe 42. The transmission rack 20 is the power input end of the transmission mechanism.

[0037] When the lifting buoy 2 dives, the lifting buoy 2 drives the rope ring 7 to move downward, and the downward movement of the rope ring 7 drives the limit rope 29 to move. The movement of the limit rope 29 drives the transmission rack 20 to slide on the first slide rail 19. The movement of the above-mentioned limit rope 29 is changed from a horizontal state to a tilted state with one end downward, so that one end of the limit rope 29 generates a pulling force to pull the transmission rack 20, and the transmission rack 20 moves to engage the transmission gear disc 8, so that the transmission gear disc 8 rotates, and the rotation of the transmission gear disc 8 drives the rotating branch pipe 42 to rotate.

[0038] In order to demonstrate the elastic connection of the transmission rack 20, the following features are also specifically provided:

[0039] A limit support plate 22 is fixedly provided at the end of the first slide rail 19 , and a limit tension spring 21 is provided on the limit support plate 22 . One end of the limit tension spring 21 is fixedly connected to the limit support plate 22 , and the other end is fixedly connected to the transmission rack 20 .

[0040] In order to show the connection relationship between the transmission gear plate 8 and the rotating branch pipe 42, the following features are also specifically provided:

[0041] The transmission mechanism also includes a rotating support 9 fixedly arranged beside the transmission toothed disc 8, a transfer shaft 10 rotatably arranged on the rotating support 9, a transfer gear 11 and a driving wheel 12 coaxially fixedly arranged on the transfer shaft 10, a worm wheel 16 coaxially fixedly connected to the rotating branch pipe 42, a positioning support plate 14 symmetrically fixedly arranged on the bearing support plate 5, a worm 15 rotatably arranged on two positioning support plates 14, a bevel gear frame 17 fixedly arranged on one positioning support plate 14 and a driven wheel 18 rotatably arranged on the bevel gear frame 17, a bevel gear group is arranged on the bevel gear frame 17, the driven wheel 18 is coaxially fixedly connected to one of the bevel teeth, the worm 15 is coaxially fixedly connected to the other bevel tooth, the worm 15 is meshed with the worm wheel 16, a transmission belt 13 is arranged between the driven wheel 18 and the driving wheel 12, the transfer gear 11 is meshed with the transmission toothed disc 8, and the worm wheel 16 is the rotating output end of the transmission mechanism.

[0042] When the transmission gear plate 8 rotates, the transmission gear plate 8 drives the transfer gear 11 to rotate, the transfer gear 11 drives the transfer shaft 10 to rotate, the transfer shaft 10 drives the driving wheel 12 to rotate, the driving wheel 12 drives the driven wheel 18 to rotate through the transmission belt 13, the driven wheel 18 drives the worm 15 to rotate through the bevel gear reversing, the worm 15 drives the worm wheel 16 to rotate, and the worm wheel 16 drives the rotating branch pipe 42 to rotate.

[0043] In order to enable the limit rope 29 to better drive the transmission rack 20 to move when the lifting buoy 2 dives, the following features are also specifically provided:

[0044] The transmission mechanism also includes a second slide rail 23 fixedly arranged beside the first slide rail 19, a movable box 24 slidably arranged on the second slide rail 23, and a positioning box 26 fixedly arranged at the end of the second slide rail 23. A movable pulley block is arranged in the movable box 24, a fixed pulley block is arranged in the positioning box 26, and a wheel rope 25 (such as Figure 7 As shown), one end of the wheel rope 25 is fixedly connected to the positioning box 26, and the other end is fixedly connected to the limiting rope 29, and the movable box 24 is fixedly connected to the transmission rack 20.

[0045] After the lifting buoy 2 dives, the movement of the limit rope 29 pulls the wheel rope 25 to move. Under the action of the movable pulley group and the fixed pulley group, the tension transmitted to the wheel rope 25 through the limit rope 29 is amplified, causing the movable box 24 to move along the second slide rail 23, and the movement of the movable box 24 drives the transmission rack 20 to move.

[0046] In order to ensure that the tension generated by the limit rope 29 can be better transmitted to the wheel rope 25 when the device is running, the following features are also specifically provided:

[0047] The transmission mechanism also includes a limiting length box 27 fixedly arranged on the side of the positioning box 26 away from the movable box 24 and a transfer slider 28 slidably arranged on the limiting length box 27. One side of the transfer slider 28 is fixedly connected to the wheel rope 25, and the other side is fixedly connected to the limiting rope 29.

[0048] Since the transfer slider 28 is slidably arranged on the limit length box 27, it has a limit effect on the wheel rope 25, preventing the tension generated by the limit rope 29 on the wheel rope 25 from being dispersed when the limit rope 29 pulls the wheel rope 25 to move.

[0049] In order to allow the limit rope 29 to pull the wheel rope 25 through the transfer slider 28 after the lifting buoy 2 dives, the following features are also specifically provided:

[0050] The transmission mechanism also includes a support frame 33, a top plate 34, a rope frame 35, a limit slip ring 36, a limit block 38 and a top column 39. The limit long box 27 is provided with a sliding transverse groove 32 along its length direction. The support frame 33 is elastically slidably arranged in the sliding transverse groove 32 (such as Fig. 9 As shown, one end of the spring is connected to the support bracket 33, and the other end is connected to the limit long box 27). A sliding hole 31 is opened at one end of the limit long box 27 close to the positioning box 26. A sliding vertical groove 37 is opened on the limit long box 27 along its height direction. The sliding vertical groove 37 is located at one end of the limit long box 27 with the sliding hole 31. The limit block 38 is elastically slidably set in the sliding vertical groove 37. A top column 39 is fixedly set on the top of the limit block 38. A contact inclined groove 40 is opened in the middle of one side of the limit block 38. The support bracket 33 is close to the limit block 38. A top plate 34 is fixedly provided at one end, and the size of the top plate 34 matches the size of the contact inclined groove 40. A rope rack 35 is provided at the end of the supporting frame 33 away from the top plate 34, and a limiting slip ring 36 is fixedly provided on the rope rack 35. The rope rack 35 is rotatably connected to one end of the supporting frame 33 through a torsion spring. A locking hole 30 is provided at the bottom of the transfer slider 28, and the top column 39 is colinear with the axis of the sliding hole 31. The top column 39 and the sliding hole 31 are slidably matched. The diameter of the locking hole 30 is slightly larger than the diameter of the top column 39, and the limiting rope 29 passes through the limiting slip ring 36.

[0051] It should be noted that the function of the spring is to reset the support bracket 33, and the function of the torsion spring is to keep the rope holder 35 in an upturned state. When the lifting buoy 2 is released normally on the water surface, the lifting buoy 2 does not dive. At this time, the limit rope 29 is not tilted, so no pressure is generated on the limit slip ring 36. At this time, the top column 39 on the limit block 38 is inserted into the locking hole 30 at the bottom of the transfer slider 28, ensuring that when the lifting buoy 2 is released normally, the limit rope 29 moves with the lifting buoy 2, and the transfer slider 28 is locked and does not move, thereby causing the transmission mechanism to not move; but when the lifting buoy 2 dives, the limit rope 29 is driven downward, and at this time the limit rope 29 changes from a horizontal state to an inclined state, and the limit rope 29 exerts pressure on the limit slip ring 36 generates pressure, causing the rope frame 35 to drive the supporting frame 33 to move along the sliding horizontal groove 32. The movement of the supporting frame 33 drives the top plate 34 to insert and touch the inclined groove 40, so that the limit block 38 moves downward along the sliding vertical groove 37, thereby driving the top column 39 to be pulled out from the locking hole 30 at the bottom of the transfer slider 28. The transfer slider 28 loses its limit and can slide smoothly on the limit long box 27. After that, the limit rope 29 continues to dive with the lifting buoy 2. The tension of the limit rope 29 at this time is transmitted to the wheel rope 25 through the transfer slider 28, and then the tension is amplified by the movable pulley group, driving the transmission rack 20 to move.

[0052] In order to ensure better protection during the operation of the device, the following features are also set:

[0053] A protective cover 6 is fixedly provided on the bearing support plate 5 , and a protective tube 41 is fixedly provided on the protective cover 6 . The axis of the protective tube 41 is colinear with the axis of the pressing screw 43 .

[0054] When the work is finished, the lifting buoy 2 floats up, the device resets, and the transmission rack 20 resets under the action of the limit tension spring 21, driving the transmission gear plate 8 to reverse, and the reversal of the transmission gear plate 8 drives the rotating branch pipe 42 to reverse, and the reversal of the rotating branch pipe 42 causes the downward pressure screw 43 to move up into the protective tube 41. The function of the protective cover 6 is to protect the various parts in the transmission mechanism and extend the service life of the device.

[0055] The working principle of the device is as follows: when the lifting buoy 2 is released normally on the water surface, the lifting buoy 2 does not dive, and the limit rope 29 does not tilt at this time, so it does not generate pressure on the limit slip ring 36. At this time, the top column 39 on the limit block 38 is inserted into the locking hole 30 at the bottom of the transfer slider 28, ensuring that when the lifting buoy 2 is released normally, the limit rope 29 moves with the lifting buoy 2, and the transfer slider 28 is locked and does not move, thereby causing the transmission mechanism to not move; but when the lifting buoy 2 dives, the limit rope 29 is The limit rope 29 is driven to move downward. At this time, the limit rope 29 changes from a horizontal state to an inclined state. The limit rope 29 generates pressure on the limit slip ring 36, causing the rope frame 35 to drive the support frame 33 to move along the sliding horizontal groove 32. The movement of the support frame 33 drives the top plate 34 to insert and touch the inclined groove 40, so that the limit block 38 moves downward along the sliding vertical groove 37, thereby driving the top column 39 to be pulled out from the locking hole 30 at the bottom of the transfer slider 28. The transfer slider 28 loses its limit and can slide smoothly on the limit long box 27. After that, the limit rope 29 continues to As the lifting buoy 2 dives, the tension of the limit rope 29 is transmitted to the wheel rope 25 through the transfer slider 28, and then the tension is amplified by the movable pulley group, driving the transmission rack 20 to move, and the transmission rack 20 moves to engage the transmission gear plate 8, so that the transmission gear plate 8 rotates, and the rotation of the transmission gear plate 8 drives the transfer gear 11 to rotate, and the rotation of the transfer gear 11 drives the transfer shaft 10 to rotate, and the rotation of the transfer shaft 10 drives the driving wheel 12 to rotate, and the rotation of the driving wheel 12 drives the driven wheel 18 to rotate through the transmission belt 13, and the driven wheel 18 rotates The worm 15 is driven to rotate by the bevel gear reversing, and the rotation of the worm 15 drives the worm wheel 16 to rotate, and the rotation of the worm wheel 16 drives the rotating branch pipe 42 to rotate, and the rotation of the rotating branch pipe 42 drives the pressing screw 43 to move downward along the axis of the rotating branch pipe 42. During this process, the telescopic guide rod 45 adaptively extends, and the pressing screw 43 moves downward to drive the pressure plate 44 to move, so that the pressure plate 44 presses the gun cable 4 below the water surface, so that the entry point of the gun cable 4 is close to the stern, preventing the gun cable 4 from colliding with floating ice when the hull 1 turns.

[0056] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A petroleum exploration seismic detection device, comprising a hull (1), a lifting buoy (2) arranged behind the hull (1), a plurality of air guns (3) arranged below the lifting buoy (2) at equal intervals along the length direction of the lifting buoy (2), and a gun cable (4) arranged below the lifting buoy (2), wherein the gun cable (4) is connected to each air gun (3), characterized in that: It also includes a bearing support plate (5) fixedly arranged at the rear of the hull (1), a transmission mechanism and a pressing mechanism, wherein the transmission mechanism has a rotation output end and a power input end, and the pressing mechanism includes a rotating branch pipe (42) rotatably arranged on the bearing support plate (5), a pressing screw (43) coaxially rotatably arranged in the rotating branch pipe (42), a pressing plate (44) fixedly arranged at the end of the pressing screw (43), and two telescopic guide rods (45) symmetrically arranged on the pressing plate (44), one end of the telescopic guide rod (45) is fixedly connected to the bottom of the bearing support plate (5), and the other end is fixedly connected to the pressing plate (44), the pressing screw (43) is threadedly connected to the rotating branch pipe (42), the power input end of the transmission mechanism is transmission-connected to the lifting buoy (2), and the rotating branch pipe (42) is transmission-connected to the rotation output end of the transmission mechanism; The transmission mechanism also includes a rope ring (7) fixedly arranged at the end of the lifting buoy (2), a limit rope (29) with one end fixedly arranged on the rope ring (7), a first slide rail (19) fixedly arranged on the bearing support plate (5), a transmission rack (20) elastically slidably arranged on the first slide rail (19), and a transmission gear plate (8) rotatably arranged beside the first slide rail (19), the transmission gear plate (8) is rotatably arranged on the bearing support plate (5) through an axle seat, the transmission rack (20) is meshed with the transmission gear plate (8), the transmission rack (20) is transmission-connected with the other end of the limit rope (29), the transmission gear plate (8) is transmission-connected with the rotating branch pipe (42), and the transmission rack (20) is the power input end of the transmission mechanism; A limit support plate (22) is fixedly disposed at the end of the first slide rail (19), a limit tension spring (21) is disposed on the limit support plate (22), one end of the limit tension spring (21) is fixedly connected to the limit support plate (22), and the other end is fixedly connected to the transmission rack (20); The transmission mechanism further comprises a rotating support (9) fixedly arranged beside the transmission gear disc (8), a transfer shaft (10) rotatably arranged on the rotating support (9), a transfer gear (11) and a driving wheel (12) coaxially fixedly arranged on the transfer shaft (10), a worm wheel (16) coaxially fixedly connected to the rotating branch pipe (42), a positioning support plate (14) symmetrically fixedly arranged on the bearing support plate (5), a worm (15) rotatably arranged on the two positioning support plates (14), and a worm (15) fixedly arranged on one positioning support plate. The invention relates to a bevel gear frame (17) on a driving wheel (14) and a driven wheel (18) rotatably arranged on the bevel gear frame (17), wherein a bevel gear group is arranged on the bevel gear frame (17), the driven wheel (18) is coaxially fixedly connected to one of the bevel gears, the worm (15) is coaxially fixedly connected to the other bevel gear, the worm (15) is meshed with the worm wheel (16), a transmission belt (13) is arranged between the driven wheel (18) and the driving wheel (12), the transfer gear (11) is meshed with the transmission gear plate (8), and the worm wheel (16) is the rotation output end of the transmission mechanism.

2. The oil exploration seismic detection equipment according to claim 1, characterized in that: The transmission mechanism further comprises a second slide rail (23) fixedly arranged beside the first slide rail (19), a movable box (24) slidably arranged on the second slide rail (23), and a positioning box (26) fixedly arranged at the end of the second slide rail (23); a movable pulley block is arranged in the movable box (24); a fixed pulley block is arranged in the positioning box (26); a wheel rope (25) is wound between the movable pulley block and the fixed pulley block; one end of the wheel rope (25) is fixedly connected to the positioning box (26), and the other end is fixedly connected to the limit rope (29); the movable box (24) is fixedly connected to the transmission rack (20).

3. The oil exploration seismic detection equipment according to claim 2, characterized in that: The transmission mechanism further comprises a position-limiting long box (27) fixedly arranged on a side of the positioning box (26) away from the movable box (24) and a transfer slider (28) slidably arranged on the position-limiting long box (27); one side of the transfer slider (28) is fixedly connected to the wheel rope (25), and the other side is fixedly connected to the position-limiting rope (29).

4. The oil exploration seismic detection equipment according to claim 3, characterized in that: The transmission mechanism further comprises a support frame (33), a top plate (34), a rope frame (35), a limit slip ring (36), a limit block (38) and a top column (39). A sliding transverse groove (32) is provided on the limit long box (27) along its length direction. The support frame (33) is elastically slidably arranged in the sliding transverse groove (32). A sliding hole (31) is provided at one end of the limit long box (27) close to the positioning box (26). A sliding vertical groove (37) is provided on the limit long box (27) along its height direction. The sliding vertical groove (37) is located at one end of the limit long box (27) where the sliding hole (31) is provided. The limit block (38) is elastically slidably arranged in the sliding vertical groove (37). A top column (39) is fixedly arranged on the top of the limit block (38). The limit block (38) ) is provided with a contact inclined groove (40) in the middle of one side, a top plate (34) is fixedly provided at one end of the support frame (33) close to the limit block (38), the size of the top plate (34) matches the size of the contact inclined groove (40), a rope rack (35) is provided at one end of the support frame (33) away from the top plate (34), a limit slip ring (36) is fixedly provided on the rope rack (35), the rope rack (35) is rotatably connected to one end of the support frame (33) through a torsion spring, a locking hole (30) is provided at the bottom of the transfer slider (28), the top column (39) and the sliding hole (31) are colinear in axis, the top column (39) and the sliding hole (31) are slidably matched, the diameter of the locking hole (30) is slightly larger than the diameter of the top column (39), and the limit rope (29) passes through the limit slip ring (36).

5. The oil exploration seismic detection equipment according to claim 4, characterized in that: A protective cover (6) is fixedly arranged on the bearing support plate (5), and a protective cylinder (41) is fixedly arranged on the protective cover (6), wherein the axis of the protective cylinder (41) is colinear with the axis of the pressing screw rod (43).

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