Underwater equipment screw-in device

Abstract

The utility model discloses an underwater equipment screw-in device, which comprises a fixed part, a screw-in part, a driving shaft and a handle, the fixed part and the screw-in part are in mutual screw-thread fit, the screw-in part and the driving shaft are coaxially arranged, the screw-in part is driven by the driving shaft to rotate forwards or reversely, and the driving shaft is connected with the handle; a connecting seat is connected between the screw-in part and the driving shaft; the screw-in part is in transmission connection with the connecting seat in the circumferential direction, and the driving shaft can rotate relative to the connecting seat in the circumferential direction; a damping friction plate is arranged between the driving shaft and the connecting seat and is tightly attached to the driving shaft and the connecting seat, and limited torque of the driving shaft is transmitted to the connecting seat through friction of the damping friction plate. The screw-in device has the advantages that rigid transmission of the screw-in device is replaced with limited torque transmission, normal rotation driving of the screw-in device can be achieved through friction force, pushing power of the screw-in device can be cut off after the screw-in device is pushed in place, and long-term use of the screw-in device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of petroleum engineering, in particular to a taking and placing fitting for underwater petroleum equipment. Background Art

[0002] Underwater petroleum engineering involves many equipment and tools. Some underwater equipment and tools have been installed during construction, while some underwater equipment and tools may need to be installed later. One of the main operations during installation is to dock the equipment and tools with the specified underwater position and then plug them into place. Due to the low visibility and complex environment underwater, in order to enable the equipment and tools to be docked in place at one time, a reliable docking mechanism and propulsion structure need to be provided. In the underwater reagent injection equipment studied earlier, the researchers configured a propulsion device, which adopts a screw nut structure. The screw is fixed on the underwater equipment and tools, and the nut is fixedly connected to the handle. The diver or underwater robot manipulates the handle to drive the nut forward and reverse, so that the screw moves forward and backward to achieve the purpose of propulsion. However, since there is no feedback on the moment of advancement, the diver or underwater robot continues to manipulate the propulsion when the equipment and tools are in place, causing the screw-nut thread damage, contact surface deformation and other problems that affect long-term use. Utility Model Content

[0003] The utility model provides a propulsion device which drives the output torque by controlling the friction force. After being pushed into place, the resistance encountered by the propulsion device is greater than the friction driving force and the device slips, thereby avoiding excessive propulsion.

[0004] The main technical solutions adopted are as follows:

[0005] An underwater equipment screw-in device comprises a fixing part, a screw-in part, a driving shaft and a handle, wherein the fixing part and the screw-in part are threadedly matched with each other, the screw-in part and the driving shaft are coaxially arranged, the screw-in part is driven by the driving shaft to rotate forward or reversely, and the driving shaft is connected to the handle;

[0006] The key point is that a connecting seat is connected between the screw-in portion and the driving shaft;

[0007] The screw-in portion is circumferentially transmission-connected with the connecting seat, and the drive shaft can rotate circumferentially relative to the connecting seat;

[0008] A damping friction plate is provided between the driving shaft and the connecting seat, and the damping friction plate is in close contact with the driving shaft and the connecting seat, and the limited torque of the driving shaft is transmitted to the connecting seat through the friction of the damping friction plate.

[0009] The limited torque refers to a torque that is smaller than the torque when the drive shaft / connecting seat and the damping friction plate slip. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the screw-in device of the utility model;

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the screw-in device of the utility model. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with embodiments and drawings.

[0013] like Figure 1 and Figure 2 As shown, an underwater equipment screw-in device comprises a fixing part 1, a screw-in part 2, a driving shaft 5 and a handle 3, wherein the fixing part 1 and the screw-in part 2 are threadedly matched with each other, the screw-in part 2 and the driving shaft 5 are coaxially arranged, the screw-in part 2 is driven by the driving shaft 5 to rotate forward or reversely, and the driving shaft 5 is connected to the handle 3;

[0014] A connecting seat 4 is connected between the screw-in portion 2 and the driving shaft 5;

[0015] The screw-in portion 2 is circumferentially transmission-connected with the connecting seat 4, and the screw-in portion 2 is axially fixedly connected with the connecting seat 4;

[0016] The driving shaft 5 can rotate circumferentially relative to the connecting seat 4;

[0017] A damping friction plate 6 is provided between the driving shaft 5 and the connecting seat 4 . The damping friction plate 6 is in close contact with the driving shaft 5 and the connecting seat 4 . The limited torque of the driving shaft 5 is transmitted to the connecting seat 4 through friction of the damping friction plate 6 .

[0018] The fixing part 1 comprises a fixing base 11, a screw 12 and a screw casing 13 are fixed on the same side of the fixing base 11, the screw 12 and the screw casing 13 are coaxially arranged, and the screw 12 is located inside the screw casing 13;

[0019] The screw-in portion 2 includes a screw-in sleeve 22, the inner wall of which is provided with a thread matching the screw rod 12, one end of the screw-in sleeve 22 is provided with the connecting plate 21, and the other end of the screw-in sleeve 22 extends between the screw rod 12 and the screw rod casing 13;

[0020] The screw-in sleeve 22 is threadably matched with the screw rod 12;

[0021] A sliding wear-resistant ring is provided between the screw-in sleeve 22 and the screw casing 13 .

[0022] The connection base 4 includes a first connection cover 41 and a second connection cover 42, the first connection cover 41 and the second connection cover 42 are buckled with each other, the first connection cover 41 and the second connection cover 42 are fixedly connected by bolts, and a connection cavity is formed between the first connection cover 41 and the second connection cover 42;

[0023] One end of the screw-in portion 2 is connected to the fixed portion 1, and the other end of the screw-in portion 2 passes through the second connection cover 42 and extends into the connection cavity. Specifically, the screw-in sleeve 22 of the screw-in portion 2 passes through the second connection cover 42 and extends into the connection cavity. A connecting disk 21 is provided at the extending section of the screw-in sleeve 22. The connecting disk 21 is located in the connection cavity. The connecting disk 21 is circumferentially transmission-connected with the connecting seat 4. Specifically, the circumferential transmission connection may be a fixed connection.

[0024] One end of the drive shaft 5 is connected to the handle 3, and the other end of the drive shaft 5 passes through the first connecting cover 41 and extends into the connecting cavity. A wear-resistant ring that cooperates with the first connecting cover 41 is mounted on the drive shaft 5, and the extending part of the drive shaft 5 is mounted with the damping friction plate 6. The damping friction plate 6 can be fixed on the outer wall of the drive shaft 5, or it can be tightly attached to the outer wall of the drive shaft 5 without being fixed. The damping friction plate 6 is tightly attached to the inner wall of the connecting cavity.

[0025] A circle of annular wedge-shaped depression is provided on the inner wall of the connecting cavity, and the annular wedge-shaped depression is arranged around the insertion part of the driving shaft 5, and a part of the damping friction plate 6 extends and is embedded in the annular wedge-shaped depression. The function of the annular wedge-shaped depression is to further increase the close contact between the damping friction plate 6 and the driving shaft 5 and the inner wall of the connecting cavity to increase the friction.

[0026] The insertion end of the drive shaft 5 is provided with an anti-slipping head 51, and the anti-slipping head 51 expands radially outward relative to the drive shaft 5. Specifically, the anti-slipping head 51 is an annular flange, one side of the anti-slipping head 51 abuts against and fits with the connecting disk 21, and the other side of the anti-slipping head 51 abuts against and fits with the damping friction plate 6. The anti-slipping head 51 also serves to increase the contact area between the damping friction plate 6 and the drive shaft 5, and the damping friction plate 6 is sandwiched between the inner wall of the connecting cavity and the anti-slipping head 51.

[0027] A stabilizing hole is provided at the center of the connecting disk 21 corresponding to the insertion end of the driving shaft 5 , and the insertion end of the driving shaft 5 is inserted into the stabilizing hole and connected thereto for circular rotation.

[0028] When acting on the underwater equipment and screwing it in, the fixed base 11 is fixed to the underwater equipment. Of course, a guide block is also provided on the underwater equipment, so that it can only move forward and backward but not rotate; when the driving shaft 5, the damping friction plate 6, and the connecting seat 4 are transmitted with a smaller torque, the driving shaft 5, the damping friction plate 6, and the connecting seat 4 rotate as a whole, thereby driving the screw-in portion 2 to rotate, and the direction of rotation can be controlled to make the screw 12 push the underwater equipment forward; when it is rotated into place, after the connecting seat 4 and the screw-in portion 2 are in contact, the resistance encountered by the screw-in portion 2 increases. When the total resistance encountered by the screw-in portion 2 is greater than the maximum friction force that the damping friction plate 6 can provide, slippage occurs between the driving shaft 5 and the damping friction plate 6, or between the damping friction plate 6 and the connecting seat 4, and finally the screw-in portion 2 can no longer be driven to rotate, thereby avoiding excessive advancement of the screw 12.

[0029] When disengaging the device subsequently, it is only necessary to control the driving shaft 5 to reverse. At this time, there may still be slippage between the driving shaft 5 and the damping friction plate 6, or between the damping friction plate 6 and the connecting seat 4. It is only necessary to pull the driving shaft 5 axially to further tighten the anti-slip head 5, the damping friction plate 6 and the connecting seat 4 to increase the friction between the anti-slip head 5, the damping friction plate 6 and the connecting seat 4 to prevent slipping.

[0030] The first connection cover 41 and the second connection cover 42 are only different in name, and their positions can be interchanged.

[0031] The handle 3 is an ROV handle, and is indirectly fixed to the driving shaft 5 .

[0032] Beneficial effect: By adopting the technical solution of the utility model, the rigid transmission of the precession device is replaced by a limited torque transmission, which can not only drive the precession device to rotate normally through friction, but also disconnect the propulsion power of the precession device after the precession device is pushed into place, thereby ensuring the long-term use of the precession device.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. An underwater equipment screw-in device, comprising a fixing part (1), a screw-in part (2), a drive shaft (5) and a handle (3), wherein the fixing part (1) and the screw-in part (2) are threadedly matched with each other, the screw-in part (2) and the drive shaft (5) are coaxially arranged, the screw-in part (2) is driven by the drive shaft (5) to rotate forward or reversely, and the drive shaft (5) is connected to the handle (3); Features: A connecting seat (4) is connected between the screw-in portion (2) and the drive shaft (5); The screw-in portion (2) is circumferentially transmission-connected to the connecting seat (4), and the drive shaft (5) can rotate circumferentially relative to the connecting seat (4); A damping friction plate (6) is provided between the driving shaft (5) and the connecting seat (4); the damping friction plate (6) is tightly attached to the driving shaft (5) and the connecting seat (4); and the limited torque of the driving shaft (5) is transmitted to the connecting seat (4) through friction of the damping friction plate (6).

2. The underwater equipment screw-in device according to claim 1, characterized in that: The connection seat (4) comprises a first connection cover (41) and a second connection cover (42), the first connection cover (41) and the second connection cover (42) are buckled with each other, the first connection cover (41) and the second connection cover (42) are fixedly connected by bolts, and a connection cavity is formed between the first connection cover (41) and the second connection cover (42); One end of the screw-in portion (2) is connected to the fixed portion (1), and the other end of the screw-in portion (2) is provided with a connecting disk (21), the connecting disk (21) is located in the connecting cavity, and the connecting disk (21) is connected to the connecting seat (4) in a circular rotational manner; One end of the drive shaft (5) is connected to the handle (3), and the other end of the drive shaft (5) extends into the connecting cavity. The extending portion of the drive shaft (5) is sleeved with the damping friction plate (6), and the damping friction plate (6) is tightly attached to the inner wall of the connecting cavity.

3. The underwater equipment screw-in device according to claim 2, characterized in that: An annular wedge-shaped recess is provided on the inner wall of the connecting cavity. The annular wedge-shaped recess is arranged around the insertion portion of the drive shaft (5), and a portion of the damping friction plate (6) extends and is embedded in the annular wedge-shaped recess.

4. The underwater equipment screw-in device according to claim 2 or 3, characterized in that: A stabilizing hole is provided at the center of the connecting disk (21) corresponding to the insertion end of the driving shaft (5); the insertion end of the driving shaft (5) is inserted into the stabilizing hole and is connected to the stabilizing hole in an annular rotation direction.

5. The underwater equipment screw-in device according to claim 2 or 3, characterized in that: The insertion end of the drive shaft (5) is provided with an anti-slip head (51), and the anti-slip head (51) expands radially outward relative to the drive shaft (5); One side of the anti-slipping head (51) abuts against the connecting disk (21), and the other side of the anti-slipping head (51) abuts against the damping friction plate (6).

6. The underwater equipment screw-in device according to claim 2 or 3, characterized in that: The fixing part (1) comprises a fixing base (11), a screw (12) and a screw casing (13) are fixed on the same side of the fixing base (11), the screw (12) and the screw casing (13) are coaxially arranged, and the screw (12) is located inside the screw casing (13); The screw-in portion (2) comprises a screw-in sleeve (22), the inner wall of which is provided with a thread matching the screw rod (12), one end of the screw-in sleeve (22) is provided with the connecting plate (21), and the other end of the screw-in sleeve (22) extends between the screw rod (12) and the screw rod casing (13); The screw-in sleeve (22) is threadably matched with the screw rod (12); A sliding wear-resistant ring is provided between the screw-in sleeve (22) and the screw casing (13).

7. The underwater equipment screw-in device according to claim 2 or 3, characterized in that: The drive shaft (5) extends from the first connection cover (41) or the second connection cover (42) into the connection cavity, and a wear-resistant ring is provided between the drive shaft (5) and the first connection cover (41) or the second connection cover (42).

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