CN109024526B - Lifting speed and position detection device for self-elevating platform pile leg and using method thereof - Google Patents
Lifting speed and position detection device for self-elevating platform pile leg and using method thereof Download PDFInfo
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- CN109024526B CN109024526B CN201810764752.3A CN201810764752A CN109024526B CN 109024526 B CN109024526 B CN 109024526B CN 201810764752 A CN201810764752 A CN 201810764752A CN 109024526 B CN109024526 B CN 109024526B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a device for detecting the lifting speed and the position of a self-elevating platform pile leg and a using method thereof, wherein the device comprises a detecting part and a frame, wherein the detecting part is arranged at one end of the frame; the detection part comprises a friction wheel, a friction wheel rotating shaft, a bearing, a friction wheel mounting seat and a rotation sensor, the wheel surface of the friction wheel is contacted with the pile leg during detection, and the friction wheel rotates along with the lifting of the pile leg; the rotation sensor detects an angular velocity and an angular displacement when the friction wheel rotating shaft rotates. The method is used for detecting the real-time speed and the real-time position of the lifting of the pile leg in the lifting process of the self-elevating platform, so that data support is provided for a lifting control system to adjust the lifting speed of the pile leg, and the self-elevating platform is kept horizontal or the inclination angle of the platform is kept within a safe range in the lifting process of the self-elevating platform.
Description
Technical Field
The invention relates to the field of ocean platforms, in particular to a device for detecting the lifting speed and the position of a pile leg of a self-elevating platform and a using method thereof.
Background
The self-elevating platform needs to adopt a lifting mechanism to drive the pile legs of the platform to move up and down so as to realize the lifting of the platform. When the self-elevating platform reaches the operation position, the pile legs are lowered, and the self-elevating platform is lifted to the designated height above the sea surface; when the operation and the navigation are completed, the self-elevating platform is lowered to the sea level. The problem that the self-elevating platform is inclined due to the fact that the lifting speed of a plurality of pile legs is asynchronous in the lifting process of the platform, pile legs are blocked or bent, and even the pile legs are mechanically damaged is solved.
Therefore, during the platform lifting process, workers are often required to detect the lifting speed and position of the legs. In the prior art, a worker determines the position of a pile leg by observing a scale on the pile leg through naked eyes, but due to the relation between the distance and the angle, the error of a detection result is within a range of +/-3 m, the result is only used for reference, and no practical significance is realized; the lifting speed of the pile leg needs to be calculated indirectly by a lifting system, and the indirectly obtained speed value has a certain difference from the actual speed value in consideration of power loss. Because the detection data is inaccurate, the condition that the inclination angle of the platform exceeds the safety range often occurs, at the moment, the platform is lifted continuously after the height of each pile leg is manually adjusted to enable the platform to be horizontal, the lifting and the consumption reduction are long, manual intervention is more, and the lifting safety is poor.
Disclosure of Invention
The invention aims to provide a device for detecting the lifting speed and the position of a self-elevating platform pile leg and a using method thereof, which have the advantages of real and reliable detection data, less manual intervention, greatly shortened total lifting time, and improved platform lifting safety and working efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for detecting the lifting speed and the position of a self-elevating platform pile leg comprises a detection part and a frame, wherein the detection part is arranged at one end of the frame;
the detection part comprises a friction wheel, a friction wheel rotating shaft, a bearing, a friction wheel mounting seat and a rotation sensor, the friction wheel mounting seat is mounted at one end of the rack, the friction wheel is fixedly sleeved on the friction wheel rotating shaft, and the friction wheel rotating shaft is mounted at one end, far away from the rack, of the friction wheel mounting seat through the bearing;
the friction wheel and the friction wheel rotating shaft synchronously and freely rotate, the wheel surface of the friction wheel is contacted with the pile leg during detection, and the friction wheel rotates along with the lifting of the pile leg;
the rotation sensor is installed on one side of the friction wheel installation seat, an output shaft of the rotation sensor is connected with the friction wheel rotating shaft, and the rotation sensor detects the angular speed and the angular displacement when the friction wheel rotating shaft rotates.
Preferably, the friction wheel mounting seat further comprises a limiting spring, one end of the limiting spring is fixed to the other end, close to the rack, of the friction wheel mounting seat, the other end of the limiting spring is fixed to the rack, and the limiting spring and the friction wheel rotating shaft are perpendicular to each other.
Preferably, the detection device further comprises a power spring, wherein the power spring is arranged on the inner side of the rack, one end of the power spring is fixed to one end, close to the detection part, of the rack, and the other end of the power spring is fixed to the other end, far away from the detection part, of the rack; the power spring is in a compressed state.
Preferably, a plurality of gear teeth are uniformly distributed on the wheel surface of the friction wheel, and a gap is formed between every two adjacent gear teeth; the gear teeth are in a trapezoidal or pyramid shape.
Preferably, the friction wheel mounting seat comprises a C-shaped frame, a closed end of the C-shaped frame is close to one end of the machine frame, two closed side surfaces of the C-shaped frame are respectively provided with a bearing mounting through hole, the two bearing mounting through holes are oppositely arranged, the bearing is mounted in the bearing mounting through hole, the friction wheel rotating shaft is mounted on the inner side of the C-shaped frame through a bearing, the friction wheel rotating shaft is parallel to the closed end of the C-shaped frame, and the friction wheel protrudes outwards from the open end of the C-shaped frame;
the rotary encoder is characterized by further comprising a rotary mounting seat, the rotary mounting seat is fixed on the outer side of the closed side face of the C-shaped frame, the rotary mounting seat is arranged on the periphery of the bearing mounting through hole, the rotary encoder is fixed on the rotary mounting seat, and an output shaft of the rotary sensor is connected with the friction wheel rotating shaft.
Preferably, the friction wheel mounting seat further comprises a rack connecting piece, a first limiting hook and a mounting pin, the rack connecting piece is mounted on the outer side of the closed end of the C-shaped frame, and the rack connecting piece is connected with one end of the rack through the mounting pin;
the outer side of the closed end of the C-shaped frame is provided with the first limiting hook, and one end of the limiting spring is fixed to the first limiting hook of the C-shaped frame.
Preferably, the rack comprises upper support rods, connecting rods, a detection part mounting rod and a base, two ends of the base are respectively and vertically provided with the two support rods, the upper ends of the two adjacent support rods are connected through the connecting rods, the upper ends of the two opposite support rods are connected through the upper support rods, one ends of the two upper support rods are connected through the detection part mounting rod, a rack connecting piece is connected with the detection part mounting rod through a mounting pin, and the rack connecting piece is perpendicular to the detection part mounting rod;
the proximal end portion of the one end of the upper supporting rod is provided with a second limiting hook, and the other end of the limiting spring is fixed to the second limiting hook.
Preferably, the rack further comprises a stretching hook and a stretching mounting seat, the power spring is obliquely arranged between the two opposite support rods, one end of the power spring is fixed on the support rod close to the detection part through the stretching hook, and the other end of the power spring is fixed on the support rod far away from the detection part through the stretching mounting seat;
the stretching mounting seat comprises a stretching connecting plate, a stretching connecting screw and a stretching fixing plate, the stretching connecting plate is mounted on the supporting rod far away from the detection part, the stretching fixing plate is connected with the stretching connecting plate through the stretching connecting screw, the stretching connecting plate and the stretching fixing plate are parallel to each other, the distance between the stretching connecting plate and the stretching fixing plate is adjusted through the stretching connecting screw, and the other end of the power spring is fixed on the stretching fixing plate.
Preferably, the rack further comprises a fixed cross beam, a reinforcing rib plate and a first fixed plate, the lower ends of two adjacent support rods are connected through the fixed cross beam, two ends of the fixed cross beam penetrate through the support rods, two ends of the fixed cross beam are connected with the base through the first fixed plate, and the reinforcing rib plate is arranged at the intersection of the fixed cross beam and the support rods.
Preferably, the method for using the device for detecting the lifting speed and the position of the self-elevating platform pile leg is characterized by comprising the following steps:
firstly, in the ascending process or descending process of a self-elevating platform, a wheel surface of a friction wheel is attached to a pile leg, the friction wheel rotates along with the movement of the pile leg, a friction wheel rotating shaft and the friction wheel synchronously rotate at the moment, and a rotation sensor detects the angular speed and the angular displacement of the friction wheel rotating shaft during rotation;
then, the lifting control system collects the angular speed and the angular displacement detected by the rotary sensor, and calculates the lifting speed and the position of the pile leg according to a conversion formula, wherein the conversion formula is as follows:
v＝ωR,s＝vt
wherein v is the linear velocity of the friction wheel, i.e. the lifting velocity of the spud leg, ω is the angular velocity of the friction wheel, R is the radius of the friction wheel, s is the arc length of the friction wheel, i.e. the displacement of the spud leg, and t is the movement time.
The device for detecting the lifting speed and the position of the self-elevating platform pile leg is used for detecting the real-time speed and the real-time position of the lifting of the pile leg in the lifting process of the self-elevating platform, so that data support is provided for a lifting control system to adjust the lifting speed of the pile leg, and the horizontal or platform inclination angle is kept in a safe range in the lifting process of the self-elevating platform; the automatic detection method has the advantages that the full automation of the detection of the lifting speed and the position of the pile leg is realized, the lifting speed and the position can be directly detected, the detection data is real and reliable, errors caused by manual measurement and errors caused by power loss in the indirect calculation of a lifting control system are avoided, the manual intervention in the lifting process of the self-elevating platform is greatly reduced, the total lifting time is greatly shortened, and the lifting safety and the working efficiency of the platform are improved.
Drawings
The drawings are further illustrative of the invention and the content of the drawings does not constitute any limitation of the invention.
FIG. 1 is a schematic perspective view of a detecting device according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a detecting device according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the top view of the inspection device according to one embodiment of the present invention;
FIG. 4 is a diagram of a friction wheel configuration in accordance with one embodiment of the present invention;
FIG. 5 is an exploded view of the structure of the sensing portion according to one embodiment of the present invention;
FIG. 6 is a schematic side view of a detecting device according to an embodiment of the present invention.
Wherein: a frame 1; a friction wheel 2; a friction wheel rotating shaft 3; a bearing 4; a friction wheel mounting base 5; a rotation sensor 6; a leg 91; an output shaft 61; a limit spring 7; a power spring 8; the gear teeth 21; a C-shaped frame 51; closed end 511 of C-shaped frame 51; a closed side 512; a bearing mounting through hole 513; a frame connecting piece 52; a first limit hook 53; a mounting pin 54; an upper support rod 11; a support rod 12; a connecting rod 13; a detection portion mounting rod 14; a base 15; a second limit hook 16; a tension mount 17; a tension web 171; stretching the connection screw 172; a tension fixing plate 173; a fixed cross member 18; a reinforcing rib 19; a first fixing plate 10; a tensile hook 161; the mount 62 is rotated.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The device for detecting the lifting speed and the position of the self-elevating platform pile leg of the embodiment comprises a detection part and a frame 1, wherein the detection part is arranged at one end of the frame 1;
as shown in fig. 1 to 3, the detecting portion includes a friction wheel 2, a friction wheel rotating shaft 3, a bearing 4, a friction wheel mounting seat 5 and a rotation sensor 6, the friction wheel mounting seat 5 is mounted at one end of the frame 1, the friction wheel 2 is fixedly sleeved on the friction wheel rotating shaft 3, and the friction wheel rotating shaft 3 is mounted at one end of the friction wheel mounting seat 5 far away from the frame 1 through the bearing 4;
the friction wheel 2 and the friction wheel rotating shaft 3 rotate freely in synchronization, the wheel surface of the friction wheel 2 is in contact with the pile leg 91 during detection, and the friction wheel 2 rotates along with the lifting of the pile leg 91;
the rotation sensor 6 is mounted on one side of the friction wheel mounting seat 5, an output shaft 61 of the rotation sensor 6 is connected with the friction wheel rotating shaft 3, and the rotation sensor 6 detects an angular velocity and an angular displacement when the friction wheel rotating shaft 3 rotates.
The lifting speed and position detection device of the self-elevating platform pile leg is used for detecting the real-time speed and the real-time position of the lifting of the pile leg 91 in the lifting process of the self-elevating platform, so that data support is provided for the lifting speed of the lifting control system for adjusting the pile leg 91, and the self-elevating platform can keep horizontal or the inclination angle of the platform in a safe range in the lifting process. The working principle is as follows: when the pile leg 91 rises, the wheel surface of the friction wheel 2 is attached to the pile leg 91, so that the pile leg 91 drives the friction wheel 2 to rotate under the action of transmission, and the friction wheel 2 is fixedly sleeved on the friction wheel rotating shaft 3, so that the friction wheel rotating shaft 3 can rotate along with the friction wheel 2; the output shaft 61 of the rotation sensor 6 is connected with the friction wheel rotating shaft 3, so that the rotation sensor 6 detects the angular speed and the angular displacement when the friction wheel rotating shaft 3 rotates, the angular speed and the angular displacement are converted into corresponding electric pulses by the rotation sensor 6 through photoelectric conversion, and the electric pulses are output to a lifting control system in digital quantity, so that the real-time speed and the real-time position of the pile leg 91 are calculated. The same principle of detection when leg 91 is lowered can be known.
The device for detecting the lifting speed and the position of the self-elevating platform pile leg realizes the full automation of the detection of the lifting speed and the position of the pile leg, the lifting speed and the position can be directly detected, the detection data is real and reliable, the errors caused by manual measurement and the errors caused by power loss in the indirect calculation of a lifting control system are avoided, the manual intervention in the lifting process of the self-elevating platform is greatly reduced, the total lifting time is greatly shortened, and the lifting safety and the working efficiency of the platform are improved.
Preferably, as shown in fig. 1, the friction wheel fixing device further comprises a limiting spring 7, one end of the limiting spring 7 is fixed to the other end of the friction wheel mounting seat 5 close to the frame 1, the other end of the limiting spring 7 is fixed to the frame 1, and the limiting spring 7 and the friction wheel rotating shaft 3 are perpendicular to each other. In the lifting process of the self-elevating platform, if the self-elevating platform inclines relative to the horizontal plane, the limiting spring 7 can generate tensile deformation or compression deformation according to the inclination condition of the self-elevating platform, so that the friction wheel 2 can be attached to the pile leg 91, and the real-time speed and the real-time position of the pile leg 91 can be reliably and accurately detected under the inclination condition of the self-elevating platform.
Preferably, as shown in fig. 1, the detection device further comprises a power spring 8, wherein the power spring 8 is arranged inside the rack 1, one end of the power spring 8 is fixed to one end of the rack 1 close to the detection part, and the other end of the power spring 8 is fixed to the other end of the rack 1 far from the detection part; the power spring 8 is in a compressed state. The power spring 8 is connected with the two ends of the frame 1, and the acting force direction of the power spring 8 in a compressed state is from inside to outside, so that the power spring 8 provides power to enable the friction wheel 2 to be attached to the pile leg 91.
Preferably, as shown in fig. 4, a plurality of gear teeth 21 are uniformly distributed on the wheel surface of the friction wheel 2, and a gap is provided between every two adjacent gear teeth 21; the gear teeth 21 are in the shape of a trapezoid or a pyramid. The rotation synchronism of the friction wheel 2 along with the pile leg 91 is enhanced, the friction wheel 2 is prevented from being blocked or rotating late, and the reliability of detection data is improved.
Preferably, as shown in fig. 5, the friction wheel mounting seat 5 comprises a C-shaped frame 51, a closed end 511 of the C-shaped frame 51 is close to one end of the machine frame 1, two closed side surfaces 512 of the C-shaped frame 51 are respectively provided with a bearing mounting through hole 513, the two bearing mounting through holes 513 are oppositely arranged, the bearing 4 is mounted in the bearing mounting through hole 513, the friction wheel rotating shaft 3 is mounted on the inner side of the C-shaped frame 51 through the bearing 4, the friction wheel rotating shaft 3 is parallel to the closed end 511 of the C-shaped frame 51, and the friction wheel 2 protrudes outwards from the open end of the C-shaped frame 51;
the friction wheel rotating shaft is characterized by further comprising a rotating installation seat 62, wherein the rotating installation seat 62 is fixed on the outer side of the closed side surface 512 of the C-shaped frame 51, the rotating installation seat 62 is arranged on the periphery of the bearing installation through hole 513, the rotary encoder 6 is fixed on the rotating installation seat 62, and the output shaft 61 of the rotary sensor 6 is connected with the friction wheel rotating shaft 3.
The friction wheel rotating shaft 3 is installed on the edge of the opening end of the C-shaped frame 51, and the friction wheel 2 protrudes outwards from the opening end of the C-shaped frame 51, so that the friction wheel 2 is attached to the pile leg 91, the friction wheel 2 is prevented from contacting other objects, and resistance is prevented from being generated to the rotation of the friction wheel 2. And C type frame 51 is protruding from the one end of frame 1, has avoided the detection device to contact with spud leg 91 except that friction pulley 2 other places, avoids the detection device to the motion of spud leg 91 production resistance. The friction wheel rotating shaft 3 is mounted on the inner side of the C-shaped frame 51 through the bearing 4, so that friction force generated when the friction wheel rotating shaft 3 rotates is reduced, and the rotating data of the friction wheel rotating shaft 3 really reflects the movement of the pile leg 91.
Preferably, as shown in fig. 5, the friction wheel mounting seat 5 further comprises a frame connecting piece 52, a first limit hook 53 and a mounting pin 54, the frame connecting piece 52 is mounted on the outer side of the closed end 511 of the C-shaped frame 51, and the frame connecting piece 52 is connected with one end of the frame 1 through the mounting pin 54; the first limiting hook 53 is arranged on the outer side of the closed end 511 of the C-shaped frame 51, and one end of the limiting spring 7 is fixed on the first limiting hook 53 of the C-shaped frame 51.
The C-shaped frame 51 is not integrally connected to the frame 1 but detachably installed, so that the inspection part having the friction wheels 2 of different sizes can be replaced according to the size and structure of the spud leg 91, and the inspection part can be detached to be replaced and maintained when damaged. The limiting spring 7 connects the C-shaped frame 51 and the upper support rod 11 of the frame 1, and the auxiliary mounting pin 54 supports the C-shaped frame 51 and generates tensile deformation or compression deformation under the condition that the self-elevating platform inclines, so that the friction wheel 2 can be attached to the pile leg 91.
Preferably, as shown in fig. 1, the rack 1 includes an upper support rod 11, support rods 12, a connecting rod 13, a detection portion mounting rod 14 and a base 15, two ends of the base 15 are respectively vertically provided with two support rods 12, upper ends of two adjacent support rods 12 are connected through the connecting rod 13, upper ends of two opposite support rods 12 are connected through the upper support rod 11, one ends of two upper support rods 11 are connected through the detection portion mounting rod 14, the rack connecting piece 52 is connected with the detection portion mounting rod 14 through a mounting pin 54, and the rack connecting piece 52 is perpendicular to the detection portion mounting rod 14; as shown in fig. 3, a second limit hook 16 is provided at a proximal end of one end of the upper support rod 11, and the other end of the limit spring 7 is fixed to the second limit hook 16.
Preferably, as shown in fig. 1, the frame 1 further includes a tension hook 161 and a tension mounting seat 17, the power spring 8 is obliquely disposed between the two opposite support rods 12, and one end of the power spring 8 is fixed on the support rod 12 close to the detection portion by the tension hook 161, and the other end of the power spring 8 is fixed on the support rod 12 far from the detection portion by the tension mounting seat 17;
as shown in fig. 6, the tension mounting base 17 includes a tension connecting plate 171, a tension connecting screw 172, and a tension fixing plate 173, the tension connecting plate 171 is mounted on the support rod 12 far from the detecting part, the tension fixing plate 173 is connected to the tension connecting plate 171 by the tension connecting screw 172, the tension connecting plate 171 and the tension fixing plate 173 are parallel to each other, the distance between the tension connecting plate 171 and the tension fixing plate 173 is adjusted by the tension connecting screw 172, and the other end of the power spring 8 is fixed to the tension fixing plate 173. The power spring 8 in a compressed state generates pressure on the support rods 12 at both ends thereof, so that the power spring 8 provides power to enable the friction wheel 2 to be attached to the pile leg 91. And the distance between the tension connecting plate 171 and the tension fixing plate 173 is adjusted through the tension connecting screw 172 to adjust the compression degree of the power spring 8, so that the power is adjusted to adapt to pile legs 91 with different tonnages, and the friction wheel 2 can be attached to the pile legs 91.
Preferably, as shown in fig. 1, the rack 1 further includes a fixed cross beam 18, a reinforcing rib 19 and a first fixed plate 10, the lower ends of two adjacent support bars 12 are connected by the fixed cross beam 18, two ends of the fixed cross beam 18 penetrate through the support bars 12, two ends of the fixed cross beam 18 are connected by the first fixed plate 10 and a base 15, and the reinforcing rib 19 is disposed at the intersection of the fixed cross beam 18 and the support bars 12. The frame 1 improves the structural strength through the fixed cross beam 18 and the reinforcing rib plate 19, provides support for the support rod 12, and effectively disperses the pressure generated by the pile leg 91 on the frame 1 when the self-elevating platform inclines.
Preferably, the method for using the device for detecting the lifting speed and the position of the self-elevating platform pile leg comprises the following steps:
firstly, in the ascending process or descending process of the self-elevating platform, the wheel surface of a friction wheel 2 is attached to a pile leg 91, the friction wheel 2 rotates along with the movement of the pile leg 91, the friction wheel rotating shaft 3 and the friction wheel 2 rotate synchronously at the moment, and a rotation sensor 6 detects the angular speed and the angular displacement when the friction wheel rotating shaft 3 rotates;
then, the lifting control system acquires the angular speed and the angular displacement detected by the rotary sensor 6, and calculates the lifting speed and the position of the pile leg according to a conversion formula, wherein the conversion formula is as follows:
v＝ωR,s＝vt
v is the linear velocity of the friction wheel 2, i.e. the lifting velocity of the pile leg 91;
ω — angular velocity of friction wheel 2;
r-the radius of the friction wheel 2;
s-arc length of friction wheel 2, i.e. displacement of leg 91; t-exercise time.
The using method of the device for detecting the lifting speed and the position of the self-elevating platform pile leg is used for detecting the real-time speed and the real-time position of the lifting of the pile leg 91 in the lifting process of the self-elevating platform, so that data support is provided for a lifting control system to adjust the lifting speed of the pile leg 91, and the horizontal or platform inclination angle is kept in a safe range in the lifting process of the self-elevating platform; the automatic detection method has the advantages that the full automation of the detection of the lifting speed and the position of the pile leg is realized, the lifting speed and the position can be directly detected, the detection data is real and reliable, errors caused by manual measurement and errors caused by power loss in the indirect calculation of a lifting control system are avoided, the manual intervention in the lifting process of the self-elevating platform is greatly reduced, the total lifting time is greatly shortened, and the lifting safety and the working efficiency of the platform are improved.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. The utility model provides a lifting speed and position detection device of self-elevating platform spud leg, includes detection portion and frame, detection portion install in the one end of frame, its characterized in that:
the detection part comprises a friction wheel, a friction wheel rotating shaft, a bearing, a friction wheel mounting seat and a rotation sensor, the friction wheel mounting seat is mounted at one end of the rack, the friction wheel is fixedly sleeved on the friction wheel rotating shaft, and the friction wheel rotating shaft is mounted at one end, far away from the rack, of the friction wheel mounting seat through the bearing;
the friction wheel and the friction wheel rotating shaft synchronously and freely rotate, the wheel surface of the friction wheel is contacted with the pile leg during detection, and the friction wheel rotates along with the lifting of the pile leg;
the rotation sensor is arranged on one side of the friction wheel mounting seat, an output shaft of the rotation sensor is connected with the friction wheel rotating shaft, and the rotation sensor detects the angular speed and the angular displacement when the friction wheel rotating shaft rotates;
the friction wheel mounting seat is characterized by further comprising a limiting spring, one end of the limiting spring is fixed to the other end, close to the rack, of the friction wheel mounting seat, the other end of the limiting spring is fixed to the rack, and the limiting spring and the friction wheel rotating shaft are perpendicular to each other;
a plurality of gear teeth are uniformly distributed on the wheel surface of the friction wheel, and a gap is formed between every two adjacent gear teeth; the gear teeth are in a trapezoidal or pyramid shape.
2. The apparatus of claim 1, wherein the apparatus comprises: the detection device is characterized by further comprising a power spring, wherein the power spring is arranged on the inner side of the rack, one end of the power spring is fixed to one end, close to the detection part, of the rack, and the other end of the power spring is fixed to the other end, far away from the detection part, of the rack; the power spring is in a compressed state.
3. The apparatus of claim 2, wherein the apparatus comprises: the friction wheel mounting seat comprises a C-shaped frame, the closed end of the C-shaped frame is close to one end of the rack, two closed side surfaces of the C-shaped frame are respectively provided with a bearing mounting through hole, the two bearing mounting through holes are oppositely arranged, the bearings are mounted in the bearing mounting through holes, the friction wheel rotating shaft is mounted on the inner side of the C-shaped frame through the bearings, the friction wheel rotating shaft is parallel to the closed end of the C-shaped frame, and the friction wheel protrudes outwards from the open end of the C-shaped frame;
the friction wheel is characterized by further comprising a rotary mounting seat, the rotary mounting seat is fixed on the outer side of the closed side face of the C-shaped frame, the rotary mounting seat is arranged on the periphery of the bearing mounting through hole, the rotary sensor is fixed on the rotary mounting seat, and an output shaft of the rotary sensor is connected with the friction wheel rotating shaft.
4. The apparatus of claim 3, wherein the apparatus comprises: the friction wheel mounting seat further comprises a rack connecting piece, a first limiting hook and a mounting pin, the rack connecting piece is mounted on the outer side of the closed end of the C-shaped frame, and the rack connecting piece is connected with one end of the rack through the mounting pin;
the outer side of the closed end of the C-shaped frame is provided with the first limiting hook, and one end of the limiting spring is fixed to the first limiting hook of the C-shaped frame.
5. The apparatus of claim 4, wherein the apparatus comprises: the rack comprises upper support rods, connecting rods, a detection part mounting rod and a base, wherein two ends of the base are respectively and vertically provided with two support rods, the upper ends of the two adjacent support rods are connected through the connecting rods, the upper ends of the two opposite support rods are connected through the upper support rods, one ends of the two upper support rods are connected through the detection part mounting rod, a rack connecting piece is connected with the detection part mounting rod through a mounting pin, and the rack connecting piece is perpendicular to the detection part mounting rod;
the proximal end portion of the one end of the upper supporting rod is provided with a second limiting hook, and the other end of the limiting spring is fixed to the second limiting hook.
6. The apparatus of claim 5, wherein the apparatus comprises: the rack also comprises a stretching hook and a stretching mounting seat, the power spring is obliquely arranged between the two opposite support rods, one end of the power spring is fixed on the support rod close to the detection part through the stretching hook, and the other end of the power spring is fixed on the support rod far away from the detection part through the stretching mounting seat;
the stretching mounting seat comprises a stretching connecting plate, a stretching connecting screw and a stretching fixing plate, the stretching connecting plate is mounted on the supporting rod far away from the detection part, the stretching fixing plate is connected with the stretching connecting plate through the stretching connecting screw, the stretching connecting plate and the stretching fixing plate are parallel to each other, the distance between the stretching connecting plate and the stretching fixing plate is adjusted through the stretching connecting screw, and the other end of the power spring is fixed on the stretching fixing plate.
7. The apparatus of claim 5, wherein the apparatus comprises: the rack further comprises a fixed cross beam, reinforcing rib plates and a first fixed plate, the lower ends of two adjacent supporting rods are connected through the fixed cross beam, the two ends of the fixed cross beam penetrate through the supporting rods, the two ends of the fixed cross beam are connected with the base through the first fixed plate, and the reinforcing rib plates are arranged at the intersection of the fixed cross beam and the supporting rods.
8. The method of using a device for detecting the elevation speed and position of a jack-up platform leg according to claim 1, comprising the steps of:
firstly, in the ascending process or descending process of a self-elevating platform, a wheel surface of a friction wheel is attached to a pile leg, the friction wheel rotates along with the movement of the pile leg, a friction wheel rotating shaft and the friction wheel synchronously rotate at the moment, and a rotation sensor detects the angular speed and the angular displacement of the friction wheel rotating shaft during rotation;
then, the lifting control system collects the angular speed and the angular displacement detected by the rotary sensor, and calculates the lifting speed and the position of the pile leg according to a conversion formula, wherein the conversion formula is as follows:
v＝ωR，s＝vt
wherein v is the linear velocity of the friction wheel, i.e. the lifting velocity of the spud leg, ω is the angular velocity of the friction wheel, R is the radius of the friction wheel, s is the arc length of the friction wheel, i.e. the displacement of the spud leg, and t is the movement time.
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| CN113062369B (en) * | 2021-03-12 | 2022-05-13 | 中国长江三峡集团有限公司 | Device and method suitable for detecting position of pile shoe of cylindrical pile leg lifting system |
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| JPS5811861A (en) * | 1981-07-16 | 1983-01-22 | Toshiba Corp | Feed speed detector |
| US4750365A (en) * | 1986-02-14 | 1988-06-14 | Shell Oil Company | Platform motion measuring system |
| CN2821575Y (en) * | 2005-09-30 | 2006-09-27 | 营口大和衡器有限公司 | Velometer |
| CN202440855U (en) * | 2012-02-17 | 2012-09-19 | 上海振华重工(集团)股份有限公司 | Spud leg height detection device |
| CN105203067A (en) * | 2014-06-25 | 2015-12-30 | 天津海科信达石油技术有限公司 | Pile leg rack phase sensor |
| CN206459687U (en) * | 2017-02-28 | 2017-09-01 | 苏州德创测控科技有限公司 | A kind of speed measuring device |
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Denomination of invention: Lifting speed and position detection device of pile leg of self-elevating platform and using method thereof Effective date of registration: 20220825 Granted publication date: 20210302 Pledgee: Guangdong Shunde Rural Commercial Bank Co.,Ltd. science and technology innovation sub branch Pledgor: KEEN OFFSHORE ENGINEERING Co.,Ltd.|GUANGDONG KEEN OFFSHORE ENGINEERING INNOVATION RESEARCH Co.,Ltd. Registration number: Y2022980013563 |
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Inventor after: Ma Zhenjun Inventor after: Zhang Jingbo Inventor after: Zhang Shuaijun Inventor after: Lu Jun Inventor after: Deng Dakui Inventor after: Li Guangyuan Inventor after: Wu Pingping Inventor after: Xu Tianyin Inventor after: Wu Borong Inventor before: Ma Zhenjun Inventor before: Zhang Jingbo Inventor before: Zhang Shuaijun Inventor before: Lu Jun Inventor before: Deng Daji Inventor before: Li Guangyuan Inventor before: Wu Pingping Inventor before: Xu Tianyin Inventor before: Wu Borong |