CN112793736A - Moving mechanism and ship lifting system for supporting offshore working platform - Google Patents
Moving mechanism and ship lifting system for supporting offshore working platform Download PDFInfo
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- CN112793736A CN112793736A CN202011618682.4A CN202011618682A CN112793736A CN 112793736 A CN112793736 A CN 112793736A CN 202011618682 A CN202011618682 A CN 202011618682A CN 112793736 A CN112793736 A CN 112793736A
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- 238000009434 installation Methods 0.000 description 9
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B77/00—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms
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Abstract
The application relates to a moving mechanism and a ship lifting system for supporting an offshore working platform, belonging to the field of ocean engineering and comprising a guide rail, a plurality of jacks are arranged at intervals along the length direction of the guide rail; the bearing frame is arranged on the guide rail in a sliding manner; the motion block is arranged on the guide rail in a sliding manner; the bolt is movably connected with the moving block so as to switch between a contraction position and a stop position, the bolt can extend into the jack when located at the stop position, an abutting inclined plane is arranged on one side of the bolt opposite to the first direction, the moving block is pushed towards the second direction, the hole wall of the jack is abutted against the abutting inclined plane and pushes the bolt to the contraction position, the bolt is separated from the jack when located at the contraction position, and the first direction is opposite to the second direction; the first driving piece is arranged between the moving block and the bolt; the telescopic cylinder is connected with the motion block and the bearing frame; the bolt not only plays driven effect, can also play the effect of locking after removing, and the locking mode is reliable, is particularly useful for under this kind of heavy load operating mode, reduces because of the possibility of current rack and pinion locking inefficacy.
Description
Technical Field
The invention relates to the field of ocean engineering, in particular to a moving mechanism and a ship lifting system for supporting an offshore working platform.
Background
An offshore work platform is a truss structure that is elevated above the sea surface and has a horizontal deck for performing production operations or other activities, such as: offshore drilling platforms or oil and gas production platforms, etc. At present, a pile type platform is mostly adopted for an offshore working platform and is composed of a pile foundation with a bearing platform, when the offshore working platform is constructed, the pile foundation is driven into the seabed, and the bearing platform (namely the working platform in the application) is installed on the pile foundation. When the cap is mounted to or dismounted from the pile foundation, the cap is generally transported to the pile foundation by a cargo ship and lifted or lowered to a height adapted to the pile foundation by lifting devices on the cargo ship. Particularly, in the process of removing the bearing platform from the pile foundation, the empty cargo ship is moved to the position below the bearing platform, then the bearing platform is separated from the pile foundation, so that the lifting device bears the bearing platform, and then the bearing platform is transported out. However, during the transportation of the bearing platform by the cargo ship, the cargo ship and the bearing platform follow the wave motion because the cargo ship is not protected from the impact of the wave, but the bearing platform and the lifting device of the cargo ship are not connected. As a result, slippage between the bearing platform and the lifting device of the cargo ship often occurs, which results in an unbalanced pressure of the bearing platform on the cargo ship, and in severe cases, a ship rollover or a bearing platform overboard occurs. Moreover, when the bearing platform is transported by a cargo ship, especially when the bearing platform needs to be detached from the pile foundation, the cargo ship needs to stay below the bearing platform, however, due to the impact of waves, the cargo ship can oscillate back and forth, so that the cargo ship and the bearing platform are continuously impacted, and the cargo ship and the lifting device are damaged.
Disclosure of Invention
The problem that the existing lifting device on the ship for transporting the offshore working platform slides between the lifting device on the ship and the offshore working platform under the impact of waves, so that the pressure of the offshore working platform on the ship is unbalanced, and the problem of ship overturning or bearing platform falling into water is caused in serious cases; and in order to reduce the slip between marine work platform and the boats and ships, set movable with lifting device to compensate the wave impact and bring marine work platform's removal in the front and back of hull and left and right sides direction generally, but current lifting device is around the hull, the drive of left and right sides direction generally adopts motor and rack and pinion transmission to realize lifting device's removal, when the locking, start opening through the motor and stop and rack and pinion's engaging force carries out the locking, but rack and pinion meshing locking takes place the locking failure under this heavy duty operating mode very easily, lead to taking place the safety problem, this application designs a moving mechanism and is used for bearing marine work platform's boats and ships lifting system and can solve above-mentioned problem, the technical scheme of its specific adoption does:
a moving mechanism comprising
The guide rail is provided with a plurality of jacks at intervals along the length direction;
the bearing frame is arranged on the guide rail in a sliding manner;
the moving block is arranged on the guide rail in a sliding manner;
the bolt, bolt and motion piece swing joint, in order to switch between shrink position and locking position, can stretch into the jack during locking position of bolt department, slide towards first direction with the relative guide rail of locking motion piece, the bolt is equipped with the butt inclined plane in one side opposite with first direction, the motion piece receives under the thrust effect towards the second direction, the pore wall and the butt inclined plane butt of jack and promote the bolt to shrink position, break away from the jack when the bolt is in shrink position, so that the motion piece can move towards the second direction, first direction is opposite with the second direction.
The first driving piece is arranged between the motion block and the bolt so as to provide a force for moving the bolt to the stopping position;
the telescopic cylinder is connected with the moving block and the bearing frame.
Preferably, the latch moves linearly in the direction perpendicular to the guide rail within the moving block so that the latch can be inserted into the insertion hole.
Preferably, the direction of following perpendicular guide rail in the motion piece is equipped with the shoulder, corresponds the shoulder and is equipped with the end cover on the motion piece of the one end of keeping away from the jack, and first driving piece is the spring, and the one end of bolt has the shaft shoulder, and the shaft shoulder of bolt sets up in the transition position of shoulder, and the spring sets up in the shoulder between bolt and end cover to make the spring can impress the bolt in the jack.
Preferably, the bolt has switching-over portion, and switching-over portion can rotate and have first position and second position on the motion piece relatively the jack, has the locating part on the motion piece for locking switching-over portion when first position and second position, during the first position, the butt inclined plane is towards the one side at telescoping cylinder place, and during the second position, the butt inclined plane is the one side at telescoping cylinder place dorsad.
Preferably, be equipped with the mounting hole in the motion piece, can dismantle in the mounting hole and be equipped with the installation piece, the bolt activity sets up in the installation piece, and first driving piece sets up in the installation piece, and the installation piece has two mounted positions in the mounting hole, and the installation piece is when two mounted positions, and the orientation on the butt inclined plane on the bolt is opposite.
Preferably, the installation piece sets up the one end that is close to the guide rail at the motion piece, and the bottom of installation piece sets up the mounting groove, and the bolt articulates in the mounting groove, and first driving piece is connected between bolt and installation piece and is located one side of bolt pin joint, is equipped with the dog on the installation piece, and the dog is located the opposite side of bolt pin joint to make the bolt only can rotate in one side of first driving piece place around its pin joint.
A ship lifting system for supporting a working platform at sea is arranged on a ship body of a ship and comprises the moving mechanism, a guide rail of the moving mechanism is arranged on the ship body along the front-back direction of the ship body, a main arm is arranged on a bearing frame of the moving mechanism in a sliding mode along the left-right direction of the ship body, a guide groove is vertically arranged at one end of the main arm, a lifting frame is arranged in the guide groove, and/or,
the guide rail of the moving mechanism is arranged on the main arm along the length direction of the main arm, the bearing frame of the moving mechanism is arranged on the ship body in a sliding mode along the front-back direction of the ship body, and the main arm is connected with the bearing frame of the moving mechanism in a sliding mode.
Preferably, the number of the moving mechanisms is three, wherein the guide rails of two moving mechanisms are arranged along the front-rear direction of the ship body, the main arm is connected between two bearing frames of the two moving mechanisms, the guide rail of the other moving mechanism is arranged on the main arm along the left-right direction of the ship body, and the bearing frame is connected with the guide rail of one moving mechanism in a sliding manner.
Preferably, one of the bearing frames is provided with an upper supporting wheel and a lower supporting wheel, the upper side surface and the lower side surface of the main arm are respectively provided with a track groove, the upper supporting wheel is arranged in the track groove of the upper side surface in a sliding manner, and the lower supporting wheel is arranged in the track groove of the lower side surface in a sliding manner.
Preferably, the bearing frame is provided with lateral guide wheels, the front side surface and the rear side surface of the main arm are respectively provided with a guide groove, and the lateral guide wheels are respectively arranged in the guide grooves in a sliding manner.
The telescopic cylinder drives the motion block, so that the butt inclined plane at the bottom end of the bolt on the motion block is sequentially inserted into the plurality of jacks under the action of transverse force in the first direction provided by the telescopic cylinder, after each jack is inserted into the bolt, the telescopic cylinder changes the telescopic direction to provide force opposite to the first direction, but the bolt cannot slide in the direction opposite to the first direction, so that the bearing frame is reversely prompted to move on the guide rail in the same direction as the motion block, and then the main arm is driven to move in the front-back direction of the hull to compensate the slippage of the offshore working platform in the front-back direction and the left-right direction of the hull under the impact of waves, and the slippage between the offshore working platform and the main arm is always ensured. The bolt not only plays driven effect, but also can play the effect of locking after removing, and the locking mode is reliable, is particularly useful for under this kind of heavy load operating mode, reduces because of the possibility of current rack and pinion locking inefficacy.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an enlarged view taken at I in FIG. 1;
FIG. 3 is a schematic structural diagram of a moving mechanism;
FIG. 4 is a schematic view of another alternative mounting arrangement for the latch;
FIG. 5 is a schematic structural view of two moving mechanisms sharing a bearing frame;
FIG. 6 is an enlarged view taken at II in FIG. 1;
fig. 7 is a schematic structural view of a driving mode of the crane.
In the figure, 1, a ship body, 2, a first moving mechanism, 201, a guide rail, 202, a moving block, 203, a bearing frame, 204, a cross rod, 205, a jack, 206, a baffle plate, 207, a first driving piece, 208, a stepped hole, 209, a bolt, 210, an abutting inclined plane, 211, a telescopic cylinder, 212, a mounting hole, 213, a mounting block, 214, a mounting groove, 215, a stop block, 3, a main arm, 301, a rail groove, 302, a guide groove, 4, a third moving mechanism, 5, a second moving mechanism, 6, a lateral guide wheel, 7, an upper supporting wheel, 8, a lower supporting wheel, 9, a guide groove, 10, a lifting frame, 11, a linkage frame, 12 and a telescopic cylinder.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 to 7, a moving mechanism includes a guide rail 201, a bearing frame 203, a moving block 202, a latch 209, a first driving member 207, and a telescopic cylinder 211.
When the moving mechanism 2 is used, the guide rail 201 may be fixed to a fixed table, and a plurality of insertion holes 205 are provided in the guide rail 201 at intervals along the longitudinal direction thereof.
The bearing frame 203 is arranged on the guide rail 201 in a sliding mode, the guide rail 201 at the position is provided with two symmetrical U-shaped grooves, the bearing frame 203 can slide on the guide rail 201, the U-shaped grooves on the two sides can also limit the bearing frame 203 to a certain extent, the bearing frame 203 is prevented from tilting, the sliding frame can move along the guide rail 201 relatively when stressed, a target object can be directly or indirectly placed or fixed on the bearing frame 203 when the bearing frame is used, and the bearing frame 203 is used for moving on the guide rail 201 to enable the target object to move to a specific position.
The motion block 202 is also slidably disposed on the guide rail 201, and can slide relative to the guide rail 201, and can also be fixed to the guide rail 201, and when the motion block 202 is fixed to the guide rail 201, the motion block 202 cannot slide on the guide rail 201.
The telescopic cylinder 211 is connected between the bearing frame 203 and the moving block 202, and the telescopic cylinder 211 is used for providing power for the bearing frame 203 to move on the guide rail 201.
The sliding of the motion block 202 on the guide rail 201 or the fixing on the guide rail 201 is realized by the above-mentioned latch 209. Specifically, the latch 209 is movably connected to the moving block 202 to switch between a retracted position and a stop position, and the latch 209 can extend into the receptacle 205 when in the stop position to stop the moving block 202 from sliding in the first direction relative to the guide rail 201. How to pull out the plug pin 209 from the jack 205 is specifically realized by an abutting inclined surface 210 arranged on a bottom end surface of the plug pin 209, when the plug pin 209 is inserted into the jack 205, the abutting inclined surface 210 abuts against a hole wall of the jack 205, and the abutting inclined surface 210 is arranged on one side of the plug pin 209 opposite to the first direction, so that when the moving block 202 and the plug pin 209 are subjected to a force provided by the telescopic cylinder 211 and opposite to the first direction (i.e. a second direction), wherein the first direction and the second direction are indicated in fig. 3, that is, the direction of the force is perpendicular to the length direction of the plug pin 209, the plug pin 209 will horizontally move along the abutting inclined surface 210 to the second direction, and simultaneously, under the action of the abutting inclined surface 210, the plug pin 209 moves upwards to pull out of the jack 205, and when the plug pin 209 is pulled out of the jack. When the latch 209 is inserted into the insertion hole 205, if the moving block 202 and the latch 209 are subjected to a force in the first direction provided by the telescopic cylinder 211, the latch 209 cannot be removed from the insertion hole 205, and instead, the bearing frame 203 is made to slide in the second direction along the guide rail 201.
Therefore, the telescopic cylinder 211 provides a force along the second direction to sequentially insert the pin 209 on the moving block 202 into each of the insertion holes 205, and after each insertion hole 205 is inserted, the telescopic bar further provides a force along the first direction to drive the bearing frame 203 to move along the second direction, so that the telescopic cylinder 211 drives the bearing frame 203 to slide on the guide rail 201, thereby realizing the position change of the bearing frame 203 and further realizing the movement of the target object on the bearing frame 203.
The movement of the latch 209 in the motion block 202 to achieve the insertion of the latch 209 into the insertion hole 205 is achieved by the first driving member 207, the first driving member 207 is disposed between the latch 209 and the motion block 202 to provide a force for moving the latch 209 to the stop position, and when the latch 209 moves to the next insertion hole 205 in the second direction under the driving of the telescopic cylinder 211, the first driving member 207 inserts the latch 209 into the insertion hole 205 to achieve the stop between the motion block 202 and the guide rail 201.
It should be noted that, in the present application, the weight of the bearing frame 203 is much larger than that of the moving block 202, and therefore, when the telescopic cylinder 211 provides a force in the second direction when the bearing frame 203 and the moving block 202 are slidably disposed on the guide rail 201 at the same time, it may happen that the moving block 202 and the latch 209 thereon are disengaged from the insertion hole 205 and slide along the guide rail 201, instead of the bearing frame 203 sliding on the guide rail 201.
Through the drive of this kind of mode to bearing frame 203, be more suitable for the loaded operating mode on the bearing frame 203, because the process cooperation telescoping cylinder 211 that bolt 209 constantly inserted jack 205 not only plays the effect of drive bearing frame 203, but also bolt 209 and jack 205 can also play the locking at a certain position, when the locking, bolt 209 can rotate 90, make the orientation of the butt inclined plane 210 on the bolt 209 at the left side or the right side of telescoping cylinder 211, make bolt 209 no matter atress on the first direction or atress can not deviate from jack 205 on the second direction, the locking mode is reliable, especially to the loaded operating mode, more can provide a reliable locking force, reduce the possibility that locking force became invalid.
In addition, the mode of driving the bearing frame 203 can realize the stop of the bearing frame 203 at a certain position by directly utilizing the mode of inserting the bolt 209 into the jack 205, thereby reducing the possible faults caused by electric control.
Further, for the latch 209 movably disposed in the motion block 202, specifically, the latch 209 moves linearly in the motion block 202 along the direction of the vertical guide rail 201, so that the latch 209 can be inserted into the insertion hole 205, then the first driving member 207 drives the latch 209 to move in the direction of the vertical guide rail 201, so as to insert the latch 209 into the insertion hole 205.
Further, as for the pin 209 moving in the motion block 202 along the direction of the vertical guide rail 201, the specific implementation manner is that a stepped hole 208 is provided in the motion block 202 along the direction of the vertical guide rail 201, an end cap is provided on the motion block 202 corresponding to the upper end of the stepped hole 208, the end cap closes the upper end of the stepped hole 208, so that the bottom end of the stepped hole 208 is opened, the upper end is closed, the upper section aperture of the stepped hole 208 is larger than the lower section aperture, the first driving member 207 is a spring, the spring is placed at the position of the stepped hole 208 corresponding to the upper section, the pin 209 is provided at the position of the stepped hole 208 corresponding to the lower section, the upper end of the pin 209 is provided with a shaft shoulder, the shaft shoulder of the pin 209 abuts against the transition position of the stepped hole 208, the spring is located above the pin 209, the pin 209 compresses the spring while moving upwards along the inclined plane of the pin abutting against the 210 under the action, the spring force presses the pin 209 into the socket 205.
In an alternative embodiment, the pin 209 moves in the moving block 202 along the direction perpendicular to the guide rail 201, and this can be achieved by, in particular, the mounting hole 212 being a straight hole, the end cap also closing the upper end of the mounting hole 212, the spring and the pin 209 being placed in the mounting hole 212, the spring being located at the upper end of the pin 209, because the pin 209 will contact the guide rail 201 during the whole movement, and therefore the pin 209 will not be removed from the mounting hole 212.
Further, in order to realize that the bearing frame 203 can move in two directions, the pin 209 is further provided with a reversing part, in this embodiment, the upper end of the pin 209 extends upward to form an end cover, the reversing part is arranged on the cross rod 204 which is arranged perpendicular to the pin 209 and is arranged at the end of the pin 209 extending out of the end cover, the end cover is provided with a limiting part for limiting the rotation of the cross rod 204, in this embodiment, the limiting part is a cross limiting groove arranged on the end cover, the cross limiting groove can be directly grooved on the end cover, or a plurality of baffles 206 can be arranged on the end cover, in this embodiment, four baffles 206 are arranged, gaps are formed between the four baffles 206 and the baffle 206, the gaps form the cross limiting groove, when the cross rod 204 rotates 180 degrees, the cross limiting groove is clamped into the cross limiting groove to realize the limiting of the transverse plate, and the locking of the moving block 202 is realized. Therefore, during the two-way movement, the latch 209 is driven by the transverse plate to have two positions, namely a first position and a second position, in the first position and the second position, the abutting inclined surface 210 at the lower end of the latch 209 faces to the opposite direction, in the first position, the abutting inclined surface 210 faces to one side of the telescopic cylinder 211, and in the second position, the abutting inclined surface 210 faces to the side of the telescopic cylinder 211.
During reversing: the cross rod 204 is pulled upwards manually, so that the cross rod 204 is separated from the limiting groove, and then the cross rod 204 is clamped into the limiting groove again by rotating 180 degrees, so that the reversing of the abutting inclined surface 210 at the lower end of the bolt 209 is realized, and the bidirectional sliding of the bearing frame 203 on the guide rail 201 is realized through the reversing of the abutting inclined surface 210 at the lower end of the bolt 209.
In an embodiment, the above-mentioned reversing of the abutting inclined surface 210 on the pin 209 can also be realized by specifically, a mounting hole 212 is provided in the moving block 202, a mounting block 213 is detachably provided in the mounting hole 212, the pin 209 is movably provided on the mounting block 213, the first driving member 207 is also provided on the mounting block 213, and when it is necessary to change the orientation of the abutting inclined surface 210 so that the abutting inclined surface 210 is opposite to the previous orientation, the mounting block 213 can be detached from the mounting hole 212, then the mounting block 213 is rotated by 180 °, and then the mounting block 213 is mounted in the mounting hole 212, so that the change of the orientation of the abutting inclined surface 210 on the pin 209 is realized, and the bidirectional sliding of the bearing frame 203 on the guide rail 201 is realized.
The detachable connection of the mounting block 213 in the mounting hole 212 may be a bolt-fastening detachable connection, or two symmetrical clamping grooves may be provided in the mounting hole 212, and the mounting block 213 is provided with a clamping protrusion, so that the clamping protrusion on the mounting block 213 can still be clamped in the clamping groove after the mounting block 213 rotates 180 degrees.
In one embodiment, as shown in fig. 4, the movable arrangement of the latch 209 on the moving block 202 can also be realized by that, specifically, the mounting block 213 is disposed at one end of the moving block 202 close to the guide rail 201, the bottom of the mounting block 213 is provided with a mounting groove 214, the latch 209 is hinged in the mounting groove 214, the first driving member 207 is connected between the latch 209 and the mounting block 213 and is located at one side (i.e. the first direction) facing away from the abutment slope 210 of the latch 209, the mounting block 213 is also provided with a stop 215, the stop 215 is located at one side (i.e. the second direction) facing the abutment slope 210 of the latch 209, and the two sides are opposite, so that the latch 209 can only rotate around its hinge point at one side where the first driving member 207 is located. In this embodiment, the manner of sliding the bearing frame 203 on the guide rail 201 driven by the telescopic cylinder 211 is the same as that in the above embodiments, and the details thereof are not repeated herein.
The application also protects a ship lifting system for supporting the offshore working platform, as shown in fig. 1, the lifting system is arranged on the ship body 1 of the ship, the lifting system comprises the above-mentioned moving mechanism 2, the moving mechanism 2 is three, for convenience of description, in the embodiment, the moving mechanism moving back and forth along the ship body 1 is called as a first moving mechanism 2 and a second moving mechanism 5, the moving mechanism moving left and right along the ship body 1 is called as a third moving mechanism 4, wherein the guide rail of the first moving mechanism 2 and the guide rail 201 of the second moving mechanism 5 are arranged on the ship body 1 along the front and back direction of the ship body 1, the main arm 3 is arranged between the bearing frames 203 of the first moving mechanism 2 and the second moving mechanism 5 in a sliding manner along the left and right direction of the ship body 1, the guide groove 9 is vertically arranged at one end of the main arm 3, the lifting frame 10 is arranged in the guide groove 9, in this way, the main arm 3 can move in the front-rear direction with respect to the hull 1 and can also move in the left-right direction with respect to the hull 1, and the crane 10 can also move in the up-down direction to realize movement in three dimensions.
Specifically, the guide rail 201 of the third moving mechanism 4 is provided on the main arm 3 in the longitudinal direction of the main arm 3, and the bearing frame 203 of the third moving mechanism 4 and the bearing frame 203 of the second moving mechanism 5 share one, and the moving mechanism 2 can drive the main arm 3 to move in the left-right direction on the bearing frame 203 of the first moving mechanism 2 and the bearing frame 203 of the second moving mechanism 5.
When the hull 1 is transporting a marine work platform, for example: a drilling platform or an oil and gas exploitation working platform needs transportation of a ship body 1 no matter the offshore working platform is installed or disassembled, when in transportation, the ship body 1 can drive the ship body 1 and the offshore working platform on the ship body 1 to jolt under the impact of wave energy, in order to prevent the offshore working platform from slipping with the ship body 1 to cause safety accidents, the offshore working platform is placed on a main arm 3, when the wave impacts, the main arm 3 moves up and down and left and right relative to the ship body 1, and a lifting frame 10 moves up and down simultaneously, so that the offshore working platform can be kept basically motionless, only the ship body 1 shakes under the impact of the wave, and the possibility of accidents is reduced.
Of course, alternatively, the moving mechanism 2 may be provided with one for driving the main arm 3 to move in the left-right direction of the hull 1, the guide rail 201 of the moving mechanism 2 is provided on the main arm 3, the bearing frame 203 is slidably provided on the hull 1, and the main arm 3 and the bearing frame 203 are slidably provided, and the movement of the bearing frame 203 in the front-back direction on the hull 1 may be realized by other driving mechanisms, such as a motor driving a rack and pinion, or a motor driving a lead screw, and so on.
Alternatively, two moving mechanisms 2 are provided for driving the main arm 3 to move in the front-back direction of the hull 1, the guide rails 201 of the two moving mechanisms 2 are arranged along the length direction of the hull 1, the main arm 3 is slidably arranged between the two bearing frames 203, and for the left-right movement of the main arm 3 on the two bearing frames 203, other driving mechanisms can be used, for example, the above-mentioned motor drives the rack and pinion, or the motor drives the lead screw.
Further, an upper supporting wheel 7 and a lower supporting wheel are arranged on a bearing frame 203 on the first moving mechanism 2, the upper supporting wheel 7 is provided with two groups, each group comprises two wheel bodies capable of bearing larger pressure, each group of upper supporting wheels 7 is hinged on the bearing frame 203, (the lower supporting wheels are not shown due to the view angle), the upper side surface and the lower side surface of the main arm 3 are respectively provided with a track groove 301, the two groups of upper supporting wheels 7 are arranged in the track grooves 301 on the upper side surface of the main arm 3 in a sliding manner, for the main arm 3, the force borne by the main arm 3 at one end of the first moving mechanism 2 is mainly upward force, the upper surface of the main arm 3 and the bearing frame 203 of the first moving mechanism 2 have upward pressure, therefore, the upper supporting wheels 7 are mainly under the action of pressure, the upper supporting wheels 7 can provide downward pressure to prevent the main arm 3 from tilting, the upper supporting wheels 7 are hinged to ensure that the two wheel bodies are always contacted with the main arm 3 when the main arm, the lower supporting wheels are arranged in the track grooves 301 on the lower side surface in a sliding mode, the lower supporting wheels are single wheel bodies, stress is small in the lower supporting wheels, and therefore the single wheel bodies can meet use requirements, the lower supporting wheels provide supporting force for the main arm 3, meanwhile the upper supporting wheels 7 and the lower supporting wheels are rolling bodies, friction force between the main arm 3 and the bearing frame 203 can be reduced, and the main arm 3 can conveniently slide on the main arm.
Furthermore, a lateral guide wheel 6 is further arranged on the bearing frame 203 of the first moving mechanism 2, guide grooves 302 are respectively arranged on the front side surface and the rear side surface of the main arm 3, the two guide grooves 302 are U-shaped grooves, and the lateral guide wheels 6 are respectively and correspondingly arranged on the guide grooves 302 in a sliding manner; two guide ways 302 are located the leading flank and the trailing flank of main arm 3, and side direction guide pulley 6 can be completely with main arm 3 clamp between it, reduces the rocking of main arm 3 in the front and back direction greatly, and side direction guide pulley 6 can also prevent that main arm 3 from taking place to twist in the horizontal direction simultaneously, and side direction guide pulley 6 can play certain limiting displacement to main arm 3.
As for the bearing frame 203 on the second moving mechanism 5, as shown in fig. 5, it is slightly different from the bearing frame 203 on the first moving mechanism 2 in structure, the difference is that only the lower support wheels 8 are arranged on the bearing frame 203 on the second moving mechanism 5, and the lower support wheels 8 are arranged in four groups, which can meet the requirement that the pressure on the second moving mechanism 5 is large, the lower support wheels 8 of each group are the same in structure as the upper support wheels 7 of each group on the bearing frame 203 of the first moving mechanism 2, and the difference is that each two groups of the four groups of the lower support wheels 8 are arranged on the bearing frame 203 at intervals in the front and back direction, and similarly, each group of the lower support wheels 8 is also hinged on the bearing frame 203, when the crane 10 bears the working platform on the sea, because the second moving mechanism 5 is close to one end of the crane 10, when the crane 10 is pressed, the other end of the main arm 3 tends to tilt upwards, and the lower supporting wheels 8 are hinged, so that two groups of lower supporting wheels 8 can be always in contact with the main arm 3, the downward pressure of the main arm 3 is prevented from being completely concentrated on one lower supporting wheel 8, and the single lower supporting wheel 8 is prevented from being crushed.
In addition, as shown in fig. 6, the crane 10 can be lifted and lowered in the vertical direction along the guide groove 9, so that the offshore work platform can be lifted and lowered in the vertical direction. The lifting is mostly applied to the process of disassembling the offshore working platform, because under normal conditions, the offshore working platform is fixed on the sea level by utilizing a pile foundation, when the offshore working platform needs to be disassembled, the ship body 1 is firstly stopped below the offshore working platform, and then the offshore working platform is disassembled to be planned to support the frame. Before hull 1 bearing offshore work platform, hull 1 can constantly strike offshore work platform owing to the impact of wave, just need constantly go up and down through crane 10 this moment and compensate the impact that the wave caused, when the wave strikes and makes hull 1 rise when high, crane 10 decline this moment avoids striking with offshore platform, when the wave strikes makes hull 1 descend, can descend crane 10 this moment.
For the driving of the lifting frame 10, specifically, a driving telescopic cylinder 12 and a linkage frame 11 are hinged on the main arm 3, the driving telescopic cylinder 12 can adopt an air cylinder or an oil cylinder, the linkage frame 11 is hinged on the main arm 3 and can rotate around the hinged position, the cylinder body end of the driving telescopic cylinder 12 is hinged on the main arm 3, the telescopic rod end is hinged at one end of the linkage frame 11, a sliding rail is arranged on the lifting frame 10 along the vertical lifting direction, a sliding block is arranged on the sliding rail in a sliding manner, and the sliding block is hinged with the other end of the linkage frame 11. When the telescopic cylinder 12 is driven to extend out, the linkage frame 11 is driven to rotate around the hinged point of the linkage frame, and when the linkage frame 11 drives the lifting frame 10 to lift, the sliding block horizontally moves along the sliding rail.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (10)
1. A moving mechanism is characterized by comprising
The guide rail is provided with a plurality of jacks at intervals along the length direction;
the bearing frame is arranged on the guide rail in a sliding manner;
the motion block is arranged on the guide rail in a sliding mode;
the bolt is movably connected with the moving block so as to be switched between a contraction position and a stop position, the bolt can extend into the jack when in the stop position so as to stop the moving block to slide towards a first direction relative to the guide rail, an abutting inclined plane is arranged on one side of the bolt opposite to the first direction, under the action of thrust towards a second direction of the moving block, the hole wall of the jack is abutted against the abutting inclined plane and pushes the bolt to the contraction position, and the bolt is separated from the jack when in the contraction position so as to enable the moving block to move towards the second direction, wherein the first direction is opposite to the second direction;
the first driving piece is arranged between the motion block and the bolt so as to provide force for moving the bolt to a stopping position;
and the telescopic cylinder is connected with the motion block and the bearing frame.
2. A movement mechanism according to claim 1, wherein said latch is linearly movable within said motion block in a direction perpendicular to said guide rail to enable said latch to be inserted into said receptacle.
3. A moving mechanism according to claim 2, wherein a step hole is formed in the moving block in a direction perpendicular to the guide rail, an end cap is provided on the moving block at an end far from the insertion hole corresponding to the step hole, the first driving member is a spring, one end of the bolt has a shoulder, the shoulder of the bolt is disposed at a transition position of the step hole, and the spring is disposed in the step hole between the bolt and the end cap, so that the spring can press the bolt into the insertion hole.
4. The moving mechanism as claimed in claim 1 or 3, wherein the bolt has a direction-changing portion, the direction-changing portion is capable of rotating relative to the insertion hole and has a first position and a second position on the moving block, the moving block has a limiting member for locking the direction-changing portion at the first position and the second position, the abutting inclined surface faces to a side where the telescopic cylinder is located at the first position, and the abutting inclined surface faces away from the side where the telescopic cylinder is located at the second position.
5. The moving mechanism as claimed in claim 1, wherein a mounting hole is formed in the moving block, a mounting block is detachably disposed in the mounting hole, the bolt is movably disposed in the mounting block, the first driving member is disposed in the mounting block, the mounting block has two mounting positions in the mounting hole, and when the mounting block is at the two mounting positions, the abutting inclined surfaces on the bolt face in opposite directions.
6. The moving mechanism as claimed in claim 5, wherein the mounting block is disposed at an end of the moving block close to the guide rail, a mounting groove is disposed at a bottom of the mounting block, the bolt is hinged to the mounting groove, the first driving member is connected between the bolt and the mounting block and located at one side of a hinge point of the bolt, a stop block is disposed on the mounting block and located at the other side of the hinge point of the bolt, so that the bolt can only rotate around the hinge point thereof at the side where the first driving member is located.
7. A ship lifting system for supporting an offshore working platform, the lifting system is arranged on a ship body of the ship, the lifting system comprises a moving mechanism as claimed in any one of claims 1-6, a guide rail of the moving mechanism is arranged on the ship body along the front-back direction of the ship body, a main arm is arranged on a bearing frame of the moving mechanism in a sliding mode along the left-right direction of the ship body, a guide groove is vertically arranged at one end of the main arm, a lifting frame is arranged in the guide groove, and/or,
the guide rail of the moving mechanism is arranged on the main arm along the length direction of the main arm, the bearing frame of the moving mechanism is arranged on the ship body in a sliding mode along the front-back direction of the ship body, and the main arm is connected with the bearing frame of the moving mechanism in a sliding mode.
8. The vessel lift system for supporting an offshore work platform according to claim 7, wherein there are three said moving means, two of said moving means having rails arranged in a fore-and-aft direction of said hull, said main arm being connected between two of said load bearing frames of two of said moving means, the other of said moving means having rails arranged in a left-and-right direction of said hull on said main arm, said load bearing frames being slidably connected to one of said rails of said moving means.
9. A vessel lift system for supporting an offshore platform as claimed in claim 8 wherein one of said frames is provided with upper support wheels and lower support wheels, said upper and lower arms of said main arm are provided with track grooves, respectively, said upper support wheels are slidably disposed in said track grooves of the upper arm and said lower support wheels are slidably disposed in said track grooves of the lower arm.
10. The vessel lift system for supporting an offshore work platform, according to claim 9, wherein the bearing frame is provided with lateral guide wheels, the front side and the rear side of the main arm are respectively provided with a guide groove, and the lateral guide wheels are respectively and correspondingly slidably arranged in the guide grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011618682.4A CN112793736A (en) | 2020-12-30 | 2020-12-30 | Moving mechanism and ship lifting system for supporting offshore working platform |
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| CN202011618682.4A CN112793736A (en) | 2020-12-30 | 2020-12-30 | Moving mechanism and ship lifting system for supporting offshore working platform |
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| CN112793736A true CN112793736A (en) | 2021-05-14 |
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| CN202011618682.4A Pending CN112793736A (en) | 2020-12-30 | 2020-12-30 | Moving mechanism and ship lifting system for supporting offshore working platform |
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