CN214061548U

CN214061548U - Lifting device for marine drilling platform

Info

Publication number: CN214061548U
Application number: CN202023170871.8U
Authority: CN
Inventors: 袁振; 曹西强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-27
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to an ocean drilling platform device technical field specifically discloses a elevating gear for ocean drilling platform, the first middle part gear that cup joints on drive gear's the center pin meshes with drive gear, it has the auxiliary gear with rack toothing to cup joint on the center pin of the second middle part gear with drive gear meshing, the position that is close to the bottom of case inner chamber both sides wall is equipped with the boss, the position that the case inner chamber is located the boss top rotates installs central axis body, the rotor plate has been cup jointed in the rotation of the well placed in the middle of central axis body, the position that the central axis body corresponds the rotor plate outer end obverse surface has cup jointed torsion spring respectively, torsion spring's one end is fixed in the boss upper surface, and torsion spring's the other end and rotor plate fixed connection, the position that spud leg both sides face corresponds the rotor plate evenly is provided with spacing lug respectively along the vertical direction; the problem of marine drilling platform elevating system's drive gear when the fracture damage of jacking platform in-process, the platform is scurry smooth downwards easily appears is solved.

Description

Lifting device for marine drilling platform

Technical Field

The utility model relates to an ocean drilling platform technical field specifically is a elevating gear for ocean drilling platform.

Background

An ocean drilling platform is an important component of ocean engineering. Offshore drilling platforms are commonly used for offshore oil exploitation, tunnel construction, ocean exploration, and the like. Offshore drilling platforms generally include a platform body, a plurality of lifting mechanisms, and a plurality of legs. Each pile leg is fixed on the seabed and matched with the lifting mechanism in a one-to-one correspondence manner. The platform body is connected with the pile legs through the lifting mechanisms fixed on the platform body, and the lifting mechanisms drive the platform body to move along the pile legs so as to lift the platform body. Taking oil exploitation as an example, after the offshore drilling platform completes drilling work, the platform body needs to be lowered to the water surface; the lifting mechanism typically comprises a plurality of motors distributed in groups, the output of the motors being gears and the legs having racks, the motor outputs and the legs forming a rack and pinion mechanism. Because the motor is fixed on the platform body, the lifting motion of the platform body along the pile legs can be finally realized through the meshing transmission of the gear at the output end of the motor and the pile legs.

In the process of ascending or descending the platform body, the lifting mechanism drives the platform body to move, and the lifting mechanism needs to be locked on the pile legs after the lifting movement is completed. The locking is usually accomplished by a locking mechanism. However, when the driving gear of the lifting mechanism is broken and damaged in the process of lifting the platform, the phenomenon of sliding of the platform is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses when the drive gear to solving among the prior art ocean drilling platform elevating system broke and damages at the jacking platform in-process, the smooth problem is scurried downwards to the platform easily appears, has designed a elevating gear for ocean drilling platform.

In order to achieve the above object, the utility model provides a following technical scheme: a lifting device for ocean drilling platform, includes spud leg, box and motor, the both sides face of spud leg is provided with the rack along vertical direction respectively, rotate between the preceding back wall of box inner chamber and install drive gear, the motor is used for driving drive gear rotates, drive gear with rack toothing, fixed cover has connect first middle part gear on drive gear's the center pin, box inner chamber is located the position rotation of first middle part gear below install with first middle part gear meshed's drive gear, box inner chamber is located the position rotation of drive gear below install with drive gear meshed's second middle part gear, fixed cover has connect auxiliary gear on the center pin of second middle part gear, auxiliary gear with rack toothing, the position of being close to the bottom of box inner chamber both sides wall is provided with the boss, the box body inner chamber is located the position of boss below rotates and installs central axis body, the rotor plate has been cup jointed to the fixed position placed in the middle of the central axis body, the central axis body corresponds the position at the front of rotor plate outer end and the back has cup jointed torsion spring respectively, torsion spring's one end is fixed in the boss lower surface, and torsion spring's the other end with rotor plate fixed connection, the position that spud leg both sides face corresponds the rotor plate evenly is provided with spacing lug respectively along vertical direction, the box openly corresponds central axis body department installs the motor, the power take off end of motor with the end of central axis body is connected.

Preferably, the top surface of the limit bump and the bottom surface of the rotating plate are both parallel to the horizontal plane.

Preferably, the driving gears are respectively arranged on two sides of the first middle gear, the auxiliary gears are respectively arranged on two sides of the second middle gear, and the racks are arranged on two sides of the limiting convex block.

Preferably, the top surface of the outer end of the rotating plate is in contact with the bottom surface of the boss.

Preferably, the bottom surface of the outer end of the limiting lug and the top surface of the inner end of the rotating plate are inclined surfaces, and the outer end of the inclined surface is higher than the inner end of the inclined surface.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to an ocean drilling platform elevating gear has increased auxiliary gear and rack toothing, and in the lift process, when the motor drove drive gear and rotates, through the transmission of drive gear make auxiliary gear rotate synchronously, and auxiliary gear and drive gear are used for driving the platform to go up and down simultaneously, have increased the holistic stability of equipment; and the auxiliary gear has also acted as the effect of spare gear, when certain drive gear appears the fracture and damages, still can guarantee the normal lift of platform.

2. When the marine drilling platform is jacked up, the driving gear bears larger external force, so that the hidden danger of pulling-off is easy to exist; through the setting of rotor plate and spacing lug for when the box rose for the spud leg, spacing lug can stir the rotor plate and rotate down and satisfy the rising of box, appeared dialling phenomenons such as disconnected when drive gear causes box and platform to have the trend of scurrying the cunning downwards, and the rotor plate can support the top surface at spacing lug, thereby avoids box and platform to scurrow the cunning downwards.

Drawings

Fig. 1 is a schematic overall front view structure diagram of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1 according to the present invention;

fig. 3 is an enlarged schematic structural diagram of the present invention at B in fig. 1.

Figure 1-legs; 11-a rack; 12-a limit bump; 2-a box body; 21-a boss; 3, a motor; 4-driving the gear; 41-a first intermediate gear; 5-an auxiliary gear; 51-a second middle gear; 6-a transmission gear; 7-rotating plate; 71-central shaft body; 72-torsion spring; 73-motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution, a lifting device for an offshore drilling platform, including a spud leg 1, a box 2 and a motor 3, wherein two side surfaces of the spud leg 1 are respectively provided with a rack 11 along a vertical direction, a driving gear 4 is rotatably installed between front and rear walls of an inner cavity of the box 2, the motor 3 is used for driving the driving gear 4 to rotate, the driving gear 4 is engaged with the rack 11, a first middle gear 41 is fixedly sleeved on a central shaft of the driving gear 4, a transmission gear 6 engaged with the first middle gear 41 is rotatably installed at a position of the inner cavity of the box 2 below the first middle gear 41, a second middle gear 51 engaged with the transmission gear 6 is rotatably installed at a position of the inner cavity of the box 2 below the transmission gear 6, an auxiliary gear 5 is fixedly sleeved on a central shaft of the second middle gear 51, the auxiliary gear 5 is engaged with the rack 11, the position that is close to the bottom of 2 inner chamber both sides walls of box is provided with boss 21, the position that the 2 inner chamber of box is located the boss 21 below rotates installs central axis body 71, the fixed rotor plate 7 that has cup jointed in the middle position of central axis body 71, the position that central axis body 71 corresponds rotor plate 7 outer end front and back has cup jointed torsion spring 72 respectively, torsion spring 72's one end is fixed in the boss 21 lower surface, and torsion spring 72's the other end and rotor plate 7 fixed connection, the position that the corresponding rotor plate 7 of spud leg 1 both sides face corresponds the rotor plate 7 evenly is provided with spacing lug 12 respectively along vertical direction, motor 73 is installed in the positive central axis body 71 department that corresponds of box 2, the power take off of motor 73 is connected with the end of central axis body 71.

In conclusion, the platform is fixedly connected with the box body 2, the motor 3 on the box body 2 drives the driving gear 4 and the first middle gear 41 to rotate, the first middle gear 41 drives the second middle gear 51 and the auxiliary gear 5 to synchronously rotate through the transmission gear 6, the auxiliary gear 5 and the driving gear 4 are simultaneously meshed with the rack 11, so that the box body 2 and the platform can move up and down relative to the spud leg 1, and under the normal condition, the box body 2 is mutually locked with the spud leg 1 through the locking mechanism, so that the effect of fixing the platform is achieved; when the box body 2 is lifted relative to the spud leg 1, the motor 73 is in a shutdown state, an automatic disengaging mechanism can be adopted at the connecting position of the output shaft of the motor 73 and the central shaft body 71, so that the output shaft of the motor 73 and the central shaft body 71 can be flexibly connected and disengaged, or the motor 73 does not have the self-locking function, when the central shaft rod 1 rotates, the output end of the motor 73 can be driven to flexibly and freely rotate, at the moment, the rotation of the central shaft body 71 is only under the torsion action of the torsion spring 72, therefore, when the box body 2 ascends, the limit lug 12 can stir the rotating plate 7, so that the rotating plate 7 rotates downwards to meet the condition that the box body 2 ascends, when the driving gear 4 is broken, the box body 2 and the platform have the tendency of slipping downwards, the rotating plate 7 which is reset under the torsion action of the torsion spring 72 is just supported on the limit lug 12, so that the box body 2 and the platform are prevented from further sliding; when the box body 2 and the platform need to descend downwards, the motor 73 is connected with the central shaft rod 71 in a linkage mode, the central shaft rod 71 is driven to rotate by the motor 73, the rotating plate 7 overcomes the force of the torsion spring 72 and rotates downwards, the rotating plate 7 is not interfered with the limiting lug 12, and therefore the box body 2 and the platform can descend integrally.

In this embodiment, the top surface of the limiting protrusion 12 and the bottom surface of the rotating plate 7 are both parallel to the horizontal plane.

In this embodiment, the driving gears 4 are respectively disposed on two sides of the first middle gear 41, the auxiliary gears 5 are respectively disposed on two sides of the second middle gear 51, and the racks 11 are disposed on two sides of the limiting protrusions 12.

In this embodiment, the top surface of the outer end of the rotating plate 7 is in contact with the bottom surface of the boss 21.

In this embodiment, the bottom surface of the outer end of the limiting protrusion 12 and the top surface of the inner end of the rotating plate 7 are both inclined surfaces, and the outer end of the inclined surface is higher than the inner end of the inclined surface.

The working principle is as follows: when the pile driving device is used, the motor 3 on the box body 2 drives the driving gear 4 and the first middle gear 41 to rotate, the first middle gear 41 drives the second middle gear 51 and the auxiliary gear 5 to synchronously rotate through the transmission gear 6, and the auxiliary gear 5 and the driving gear 4 are simultaneously meshed with the rack 11, so that the box body 2 and the platform can move up and down relative to the pile leg 1; when the box body 2 ascends relative to the spud leg 1, the motor 73 is in a shutdown state, the rotation of the central shaft body 71 is only under the torsion action of the torsion spring 72, therefore, when the box body 2 ascends, the limiting lug 12 can stir the rotating plate 7, so that the rotating plate 7 rotates downwards to meet the condition that the box body 2 ascends, when the driving gear 4 is pulled off and the like, the box body 2 and the platform have the tendency of slipping downwards integrally, and the rotating plate 7 which is reset under the torsion action of the torsion spring 72 can be just supported on the limiting lug 12, so that the box body 2 and the platform are prevented from further slipping; when the box body 2 and the platform need to descend downwards, the motor 73 is connected with the central shaft rod 71, the motor 73 drives the central shaft rod 71 to rotate, the rotating plate 7 overcomes the force of the torsion spring 72 to rotate downwards, the rotating plate 7 does not interfere with the limiting lug 12, and therefore the integral descending of the box body 2 and the platform is met.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a elevating gear for ocean drilling platform, includes spud leg (1), box (2) and motor (3), the both sides face of spud leg (1) is provided with rack (11) along vertical direction respectively, rotate between the preceding back wall of box (2) inner chamber and install drive gear (4), motor (3) are used for the drive gear (4) rotate, drive gear (4) with rack (11) meshing, its characterized in that: the fixed cover of the center epaxial of drive gear (4) has been connected first middle part gear (41), box (2) inner chamber is located the position of first middle part gear (41) below rotates install with drive gear (6) of first middle part gear (41) meshing, box (2) inner chamber is located the position of drive gear (6) below rotates install with second middle part gear (51) of drive gear (6) meshing, the fixed cover of the center epaxial of second middle part gear (51) has been connected auxiliary gear (5), auxiliary gear (5) with rack (11) meshing, the position of being close to the bottom of box (2) inner chamber both sides wall is provided with boss (21), box (2) inner chamber is located the position of boss (21) below rotates installs central axis body (71), the position of centering of central axis body (71) is fixed to be cup jointed rotor plate (7), torsion springs (72) are respectively sleeved at the positions, corresponding to the front face and the back face of the outer end of the rotating plate (7), of the central shaft body (71), one ends of the torsion springs (72) are fixed to the lower surface of the boss (21), the other ends of the torsion springs (72) are fixedly connected with the rotating plate (7), limiting lugs (12) are respectively and uniformly arranged at the positions, corresponding to the rotating plate (7), of the two side faces of the pile leg (1) in the vertical direction, a motor (73) is installed at the position, corresponding to the central shaft body (71), of the front face of the box body (2), and the power output end of the motor (73) is connected with the end head of the central shaft body (71).

2. A lifting device for an offshore drilling rig according to claim 1, wherein: the top surface of the limit bump (12) and the bottom surface of the rotating plate (7) are both parallel to the horizontal plane.

3. A lifting device for an offshore drilling rig according to claim 2, wherein: the driving gears (4) are respectively arranged on two sides of the first middle gear (41), the auxiliary gears (5) are respectively arranged on two sides of the second middle gear (51), and the racks (11) are arranged on two sides of the limiting convex blocks (12).

4. A lifting device for an offshore drilling rig according to claim 3, wherein: the top surface of the outer end of the rotating plate (7) is in contact with the bottom surface of the boss (21).

5. A lifting device for an offshore drilling rig according to claim 4, characterized in that: the bottom surface of the outer end of the limiting lug (12) and the top surface of the inner end of the rotating plate (7) are inclined planes, and the outer end of each inclined plane is higher than the inner end of each inclined plane.