Cantilevered heavy object release mechanism under small micro-force control

Abstract

The present invention discloses a cantilevered heavy object release mechanism under small micro-force control, which solves the time-consuming and labor-intensive problem of releasing heavy equipment products to the sea on an ocean engineering ship. The mechanism comprises a box-shaped base (1), a lever (2) and a cylindrical core (3). A limit shaft (6) is arranged in a pair of bearings (5) arranged on the box-shaped base (1). A notch (7) is arranged at the central position of the limit shaft (6). A limit swing rod (9) and a torsion spring seat (10) are respectively arranged on the right end extension shaft (8) of the limit shaft (6). A lever movable embedding groove (21) is arranged on the cylindrical core (3). The lever (2) is movably arranged in the lever movable embedding groove (21) and the box-shaped base (1). The notch (7) on the limit shaft (6) is arranged in an upward position. A transfer sleeve (24) is cantilevered on the cylindrical core (3). The present invention is simple to operate, and no hoisting equipment is required when releasing heavy objects.

Description

Technical Field

[0001] The invention relates to a heavy object releasing mechanism, in particular to a releasing mechanism and a releasing method for releasing heavy objects from a ship to the water surface by suspension in a marine vessel. Background Art

[0002] With the development of marine resources, more and more engineering equipment needs to be deployed in the sea. These deployed equipment are released at sea by cranes on marine engineering ships. Due to the high harpoon of marine engineering ships and the strong winds and rough seas, when releasing engineering equipment products, in order to ensure safety, operators cannot directly go down to the water surface to perform the release operation. They can only use the crane on the engineering ship to slowly lower the engineering equipment to the water surface through the hook, and then separate the hook from the lock. Due to the strong winds and high waves on the water surface, the hull is also shaking constantly, and it is difficult to separate the hook from the lock. There is a problem of time-consuming and laborious operation. In addition, the equipment released into the sea is generally heavy, and a large release control force is required to complete the release action. How to use a small control force to release heavy equipment has become an urgent problem to be solved on site. Summary of the invention

[0003] The present invention provides a cantilevered heavy object release mechanism and release method under small micro-force control, which solves the technical problems of time-consuming and labor-intensive deployment of heavy equipment products on an offshore engineering vessel and the need for large release control force when deploying.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A cantilevered heavy object release mechanism under small and micro-force control comprises a box-shaped base, a lever and a cylindrical core body, a pair of bearing mounting holes are arranged on the box-shaped base, bearings are installed in the bearing mounting holes, a limited position shaft is arranged in the pair of bearings, a notch is arranged at the central position of the limited position shaft, a limited position swing rod and a torsion spring seat are respectively arranged on the right end protruding shaft of the limited position shaft, the limited position swing rod is fixedly connected with the limited position shaft, and a spring seat is arranged on the outer end of the limited position swing rod. The limit pin is provided with a recessed groove, and the spring seat is movably sleeved on the right end of the limit shaft, and a spring is arranged on the spring seat; a lever swing pin shaft hole is arranged in the middle of the lever, a lock tongue is arranged at the front end of the lever, a lock tongue conical locking surface is arranged on the lock tongue, and a pressure roller is arranged at the rear end of the lever; a lever movable embedding groove is arranged on the cylindrical core body, and core body pin shaft holes are arranged on the cylindrical core body on both sides of the lever movable embedding groove. A flange with a notch is fixedly provided at the rear end, and the cylindrical core is fixedly connected to the box opening of the box-shaped base through the flange with a notch, the lever is movably arranged in the lever movable embedding groove and the box-shaped base, and the lever pin passes through the core pin hole and the lever swing pin hole to hinge the lever and the cylindrical core together, the notch on the limit shaft is set in the upward position, and the cylindrical lower bottom surface of the limit shaft is connected with the pressure roller, and the box-shaped base is connected with the pressure roller. An electromagnet base is provided on the top, an electromagnet is provided on the electromagnet base, an output shaft on the electromagnet extends out of the limit pin clamping groove, one end of the twist spring is fixedly connected to the twist spring seat, the other end of the twist spring is connected to the limit swing rod, and the twist spring is in a pre-tightened state; a transfer sleeve is cantilevered on the cylindrical core body, an annular conical locking surface in the hole is provided in the transfer sleeve, and the annular conical locking surface in the hole is abutted against the raised conical locking surface of the lock tongue.

[0006] A released weight is suspended on the transfer sleeve; a safety pin is arranged between the limit swing rod and the box-shaped base; and an electromagnet-energized manual pull ring is arranged on the electromagnet.

[0007] The cantilevered positive pressure F1 of the adapter sleeve and the positive pressure F2 of the rotating shaft on the pressure roller are a pair of balancing forces applied at both ends of the lever, and the two satisfy the relationship: F2=0.5F1; the friction coefficient between the pressure roller and the limiting shaft is 0.01, the friction force of the limiting shaft on the pressure roller is F3, and the friction force F3 and the positive pressure F2 of the rotating shaft satisfy the relationship: F3=0.01F2; the friction force F3 of the limiting shaft on the pressure roller and the positive pressure F4 of the output shaft on the electromagnet on the limiting swing arm are a pair of balancing forces, the force arm ratio between the limiting swing arm and the limiting shaft is 5, and the positive pressure F4 of the limiting swing arm and the friction force F3 of the limiting shaft on the pressure roller satisfy the relationship: F4=0.2 F3; the friction coefficient between the limit rocker and the output shaft on the electromagnet is 0.5, then the pin pulling force F5 acting on the electromagnet energized manual pull ring set on the electromagnet and the positive pressure F4 of the limit rocker satisfy the relationship: pin pulling force F5=0.5F4.

[0008] A method for releasing a suspended heavy object under micro-force control comprises the following steps:

[0009] The first step is to set a pair of bearing mounting holes on the box-shaped base, install a pair of bearings in the bearing mounting holes, set a limit shaft in the pair of bearings, set a notch at the central position of the limit shaft, set a limit swing rod and a spring seat on the right end of the limit shaft, respectively, the limit swing rod is fixedly connected with the limit shaft, and a limit pin engaging groove is set on the outer end of the limit swing rod. The spring seat is movably sleeved on the right end of the limit shaft, and a spring is set on the spring seat; the lever is movably set in the lever movable embedding groove and the box-shaped base, and the lever pin passes through the core pin hole and swings with the lever The lever is hinged to the cylindrical core body after the pin shaft hole, the notch on the limit shaft is set in the upward position, the cylindrical lower bottom surface of the limit shaft is connected with the pressure roller, the output shaft on the electromagnet extends out of the limit pin clamping groove, one end of the twist spring is fixedly connected to the twist spring seat, the other end of the twist spring is connected with the limit swing rod, and the twist spring is in a pre-tightened state; a transfer sleeve is suspended on the cylindrical core body, an annular conical locking surface in the hole is set in the transfer sleeve, and the annular conical locking surface in the hole is in contact with the tilted conical locking surface of the lock tongue; the released weight is sleeved on the transfer sleeve;

[0010] Step 2: Select the length of the main power arm and the passive power arm of the lever, so that the cantilever positive pressure F1 exerted by the released weight on the lever through the adapter sleeve and the positive pressure F2 of the rotating shaft on the pressure roller satisfy the relationship: F2=0.5F1; select the diameter of the limit shaft and the length of the limit swing rod, so that the positive pressure F4 of the output shaft on the electromagnet on the limit swing rod and the friction force F3 of the limit shaft on the pressure roller satisfy the relationship: F4=0.2F3;

[0011] In the third step, after the released heavy object is suspended out of the harpoon of the engineering ship, the manual pull ring of the electromagnet is pulled, and the electromagnet is energized, so that the output shaft of the electromagnet is retracted from the limit pin engaging groove, and the limit on the limit swing rod is released. The limit swing rod rotates under the action of the torsion spring, so that the swing rod drives the limit shaft to rotate, and the notch on the limit shaft rotates from the upward position to the downward position, the downward pressure of the limit shaft on the pressure roller is released, the pressure roller swings upward, and the lock tongue at the front end of the lever swings downward, so that the lock tongue conical locking surface set on the lock tongue and the annular conical locking surface in the hole set in the adapter sleeve are disengaged from the limit, and the released heavy object slides from the adapter sleeve and falls into the sea.

[0012] The invention is easy to operate, does not require lifting equipment when releasing the heavy object, can be operated by a single person, ensures successful deployment at one time, shortens the operation time, and can complete the release of the heavy object with very small control force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when it explodes;

[0014] Figure 2 It is a force analysis diagram of the present invention;

[0015] Figure 3 is a state diagram of the lever 2 of the present invention after the weight is released;

[0016] Figure 4 It is a state diagram of the lever 2 of the present invention before the weight is released. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the accompanying drawings:

[0018] A cantilevered heavy object release mechanism under small micro-force control comprises a box-shaped base 1, a lever 2 and a cylindrical core 3. A pair of bearing mounting holes 4 are arranged on the box-shaped base 1, a bearing 5 is installed in the bearing mounting hole 4, a limit shaft 6 is arranged in the pair of bearings 5, a notch 7 is arranged at the central position of the limit shaft 6, a limit swing rod 9 and a torsion spring seat 10 are respectively arranged on the right end extension shaft 8 of the limit shaft 6, the limit swing rod 9 is fixedly connected with the limit shaft 6, and a limit pin clamping groove is arranged on the outer end of the limit swing rod 9 12, the spring seat 10 is movably sleeved on the right end of the limit shaft 6 and the extension shaft 8, and a spring 11 is arranged on the spring seat 10; a lever swing pin hole 17 is arranged in the middle of the lever 2, a lock tongue 18 is arranged at the front end of the lever 2, a lock tongue conical locking surface 19 is arranged on the lock tongue 18, and a pressure roller 16 is arranged at the rear end of the lever 2; a lever movable embedding groove 21 is arranged on the cylindrical core 3, core pin holes 22 are arranged on the cylindrical core 3 on both sides of the lever movable embedding groove 21, and a pressure roller 16 is arranged at the rear end of the cylindrical core 3 A flange 20 with a notch is fixedly provided, and the cylindrical core 3 is fixedly connected to the box opening of the box-shaped base 1 through the flange 20 with a notch. The lever 2 is movably provided in the lever movable embedding groove 21 and the box-shaped base 1. The lever pin 23 passes through the core pin hole 22 and the lever swing pin hole 17 to hinge the lever 2 and the cylindrical core 3 together. The notch 7 on the limit shaft 6 is set in an upward position, and the cylindrical lower bottom surface of the limit shaft 6 is connected to the pressure roller 16. An electric A magnet base 13 is provided with an electromagnet 14 on the electromagnet base 13, an output shaft 27 on the electromagnet 14 extends out of the limit pin engaging groove 12, one end of the twist spring 11 is fixedly connected to the twist spring seat 10, the other end of the twist spring 11 is connected to the limit swing rod 9, and the twist spring 11 is in a pre-tightened state; an adapter sleeve 24 is cantilevered on the cylindrical core body 3, an annular conical locking surface 25 in the hole is provided in the adapter sleeve 24, and the annular conical locking surface 25 in the hole is abutted against the raised conical locking surface 19 of the lock tongue.

[0019] A released weight is suspended on the adapter sleeve 24; a safety pin 26 is arranged between the limit rocker arm 9 and the box-shaped base 1; an electromagnet energized manual pull ring 15 is arranged on the electromagnet 14; the "lever" system composed of the shifting rod 2, the limit shaft 6 and the limit rocker arm 9 realizes the amplification of the limit force from the small control force to the large limit force of the released weight.

[0020] The cantilevered positive pressure F1 of the adapter sleeve 24 and the positive pressure F2 of the rotating shaft on the pressure roller 16 are a pair of balancing forces applied at both ends of the lever 2, and the two satisfy the relationship: F2=0.5F1; the friction coefficient between the pressure roller 16 and the limiting shaft 6 is 0.01, and the friction force of the limiting shaft 6 on the pressure roller 16 is F3. The friction force F3 and the positive pressure F2 of the rotating shaft satisfy the relationship: F3=0.01F2; the friction force F3 of the limiting shaft 6 on the pressure roller 16 and the positive pressure F4 of the output shaft 27 on the electromagnet 14 on the limiting rocker 9 are a pair of balancing forces, and the arm ratio between the limiting rocker 9 and the limiting shaft 6 is 5. The positive pressure F4 of the limiting rocker 9 and the friction force F3 of the limiting shaft 6 on the pressure roller 16 satisfy the relationship: F4=0.2 F3; the friction coefficient between the limit rocker arm 9 and the output shaft 27 on the electromagnet 14 is 0.5, then the pin pulling force F5 acting on the electromagnet energized manual pull ring 15 set on the electromagnet 14 and the positive pressure F4 of the limit rocker arm 9 satisfy the relationship: pin pulling force F5=0.5F4; the release force of the electromagnet 14 can be realized as one two thousandth of the gravity of the released heavy object.

[0021] A method for releasing a suspended heavy object under micro-force control comprises the following steps:

[0022] The first step is to set a pair of bearing mounting holes 4 on the box-shaped base 1, install a pair of bearings 5 ​​in the bearing mounting holes 4, set a limit shaft 6 in the pair of bearings 5, set a notch 7 at the central position of the limit shaft 6, set a limit swing rod 9 and a spring seat 10 on the right end of the limit shaft 6 The limit swing rod 9 is fixedly connected to the limit shaft 6, and a limit pin engaging groove 12 is set on the outer end of the limit swing rod 9. The spring seat 10 is movably sleeved on the right end of the limit shaft 6. A spring 11 is set on the spring seat 10; the lever 2 is movably set in the lever movable embedding groove 21 and the box-shaped base 1, and the lever pin shaft 23 passes through the core body pin shaft hole 22 and the lever swing pin shaft The lever 2 is hinged to the cylindrical core 3 after the hole 17 is formed, the notch 7 on the limit shaft 6 is set in an upward position, the cylindrical lower bottom surface of the limit shaft 6 is connected to the pressure roller 16, the output shaft 27 on the electromagnet 14 extends out of the limit pin clamping groove 12, one end of the twist spring 11 is fixedly connected to the twist spring seat 10, and the other end of the twist spring 11 is connected to the limit swing rod 9, and the twist spring 11 is in a pre-compressed state; the adapter sleeve 24 is suspended on the cylindrical core 3, and the adapter sleeve 24 is provided with an annular conical locking surface 25 in the hole, and the annular conical locking surface 25 in the hole is in contact with the tilted lock tongue conical locking surface 19; the released weight is sleeved on the adapter sleeve 24;

[0023] Step 2: Select the length of the main power arm I1 and the length of the passive power arm I2 of the lever 2, so that the cantilever positive pressure F1 exerted by the released weight on the lever 2 through the adapter sleeve 24 and the positive pressure F2 of the rotating shaft on the pressure roller 16 satisfy the relationship: F2=0.5F1; select the diameter of the limit shaft 6 and the length of the limit swing rod 9, so that the positive pressure F4 exerted by the output shaft 27 on the electromagnet 14 on the limit swing rod 9 and the friction force F3 exerted by the limit shaft 6 on the pressure roller 16 satisfy the relationship: F4=0.2F3;

[0024] In the third step, after the released heavy object is suspended out of the harpoon of the engineering ship, the manual pull ring 15 of the electromagnet is pulled, and the electromagnet 14 is energized, so that the output shaft 27 of the electromagnet 14 is retracted from the limit pin engaging groove 12, and the limit on the limit swing rod 9 is released. The limit swing rod 9 rotates under the action of the torsion spring 11, so that the swing rod 9 drives the limit shaft 6 to rotate, and the notch 7 on the limit shaft 6 rotates from the upward position to the downward position, and the downward pressure of the limit shaft 6 on the pressure roller 16 is released, and the pressure roller 16 swings upward, and the locking tongue 18 at the front end of the lever 2 swings downward, so that the locking tongue conical locking surface 19 set on the locking tongue 18 and the annular conical locking surface 25 in the hole set in the adapter sleeve 24 are disengaged from the limit, and the released heavy object slides off the adapter sleeve 24 and falls into the sea under the action of the downward sliding force F.

Claims

1. A cantilevered heavy object release mechanism under micro-force control, comprising a box-shaped base (1), a lever (2) and a cylindrical core (3), characterized in that: A pair of bearing mounting holes (4) are provided on the box-shaped base (1), bearings (5) are installed in the bearing mounting holes (4), a limit shaft (6) is provided in the pair of bearings (5), a notch (7) is provided at the central position of the limit shaft (6), a limit swing rod (9) and a spring seat (10) are respectively provided on the right end extension shaft (8) of the limit shaft (6), the limit swing rod (9) and the limit shaft (6) are fixedly connected together, a limit pin clamping groove (12) is provided on the outer end of the limit swing rod (9), the spring seat (10) is movably sleeved on the right end extension shaft (8) of the limit shaft (6), and a spring (11) is provided on the spring seat (10); a lever swing pin shaft hole (11) is provided in the middle of the lever (2), and a limit pin clamping groove (12) is provided on the outer end of the limit swing rod (9). 17), a locking tongue (18) is arranged at the front end of the lever (2), a locking tongue conical locking surface (19) is arranged on the locking tongue (18), and a pressure roller (16) is arranged at the rear end of the lever (2); a lever movable embedding groove (21) is arranged on the cylindrical core (3), core body pin shaft holes (22) are arranged on the cylindrical core (3) on both sides of the lever movable embedding groove (21), a flange plate (20) with a notch is fixedly arranged at the rear end of the cylindrical core (3), the cylindrical core (3) is fixedly connected to the box opening of the box-shaped base (1) through the flange plate (20) with a notch, the lever (2) is movably arranged in the lever movable embedding groove (21) and the box-shaped base (1), and the lever pin shaft (23) passes through the core After the pin shaft hole (22) and the lever swing pin shaft hole (17), the lever (2) and the cylindrical core (3) are hinged together, the notch (7) on the limit shaft (6) is set in an upward position, the cylindrical lower bottom surface of the limit shaft (6) is connected to the pressure roller (16), an electromagnet base (13) is set on the box-shaped base (1), an electromagnet (14) is set on the electromagnet base (13), the output shaft (27) on the electromagnet (14) extends out of the limit pin clamping groove (12), one end of the twist spring (11) is fixedly connected to the twist spring seat (10), the other end of the twist spring (11) is connected to the limit swing rod (9), and the twist spring (11) is in a pre-tightened state; on the cylindrical core (3) A transfer sleeve (24) is suspended on the upper part, and an annular conical locking surface (25) is provided in the transfer sleeve (24), and the annular conical locking surface (25) is in contact with the tilted locking tongue conical locking surface (19); a released weight is suspended on the transfer sleeve (24); a safety pin (26) is provided between the limit swing rod (9) and the box-shaped base (1); an electromagnet energized manual pull ring (15) is provided on the electromagnet (14); the cantilevered positive pressure F1 of the transfer sleeve (24) and the positive pressure F2 of the rotating shaft on the pressure roller (16) are a pair of balancing forces applied to the two ends of the lever (2), and the two satisfy the relationship: F2=0.5F1; the friction coefficient between the pressure roller (16) and the limit shaft (6) is 0.01, the friction force of the limit shaft (6) on the pressure roller (16) is F3, and the friction force F3 and the positive pressure F2 of the rotating shaft satisfy the relationship: F3=0.01F2; the friction force F3 of the limit shaft (6) on the pressure roller (16) and the positive pressure F4 of the output shaft (27) on the electromagnet (14) on the limit swing rod (9) are a pair of balancing forces, the force arm ratio between the limit swing rod (9) and the limit shaft (6) is 5, and the positive pressure F4 of the limit swing rod (9) and the friction force F3 of the limit shaft (6) on the pressure roller (16) satisfy the relationship: F4=0.2 F3; the friction coefficient between the limit swing rod (9) and the output shaft (27) on the electromagnet (14) is 0.5, then the pin pulling force F5 acting on the electromagnet energized manual pull ring (15) provided on the electromagnet (14) and the positive pressure F4 of the limit swing rod (9) satisfy the relationship: pin pulling force F5 = 0.5F4. .

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