Penetrating method of self-adjusting hydraulic static penetrating device suitable for seabed slope area

Abstract

A self-adjusting hydraulic static penetrating device and method suitable for a seabed slope area is provided. The device includes an upper adjustable injection platform and a lower adjustable supporting platform. The upper adjustable injection platform is fixedly connected with the upper surface of the lower adjustable supporting platform. The upper adjustable injection platform includes a rack, a control cabin, an injection mechanism, a hydraulic station, a balance weight and first jacks. The control cabin, the injection mechanism, the hydraulic station, the balance weight and the first jacks are all arranged on the rack. The four first jacks are installed at the bottom of a steel structure frame, and the first jacks are fixed to the lower adjustable supporting platform. The device is simple in structure and low in cost, and can guarantee, to the maximum extent, that the overall gravity center of the device is always constant or slightly changes.

Claims

1. A penetrating method of a self-adjusting hydraulic static penetrating device suitable for a land slope area, wherein the self-adjusting hydraulic static penetrating device suitable for the land slope area comprises an upper adjustable injection platform and a lower adjustable supporting platform, wherein the upper adjustable injection platform is fixedly arranged on the lower adjustable supporting platform; the upper adjustable injection platform comprises a rack, a control cabin, a penetrating mechanism, a hydraulic station, a balance weight and first jacks; the control cabin, the penetrating mechanism, the hydraulic station, the balance weight and the first jacks are all arranged on the rack; the four first jacks are installed at a bottom of a steel structure frame, and the first jacks are fixed to the lower adjustable supporting platform; the penetrating mechanism comprises a supporting frame, a plurality of groups of pulleys, a feeler lever, a movable mechanical clamping hand, a fixed mechanical clamping hand and an oil cylinder, wherein the plurality of groups of the pulleys, the feeler lever, the movable mechanical clamping hand, the fixed mechanical clamping hand and the oil cylinder are all arranged on the supporting frame; the fixed mechanical clamping hand is fixedly arranged on a lower part of the supporting frame; the movable mechanical clamping hand is positioned above the fixed mechanical clamping hand; slide rails in a vertical direction are arranged at two sides of the movable mechanical clamping hand; the slide rails are fixedly arranged on the supporting frame; the movable mechanical clamping hand is connected with the oil cylinder through a steel wire; the movable mechanical clamping hand moves vertically along the slide rails; a feeler lever guide sleeve is arranged on a bottom of the supporting frame; the feeler lever sequentially passes through the feeler lever guide sleeve, the fixed mechanical clamping hand and the movable mechanical clamping hand; and a first gyroscope is fixedly arranged on a top of the balance weight; the lower adjustable supporting platform comprises a housing and second jacks, wherein a hole allowing the feeler lever to pass through is formed in a middle of the housing; the second jacks are respectively arranged at four corners of a bottom of the housing; and a second gyroscope is arranged in the lower adjustable supporting platform; wherein, the penetrating method comprises the following steps: step 1, putting the self-adjusting hydraulic static penetrating device into seawater, and dropping the self-adjusting hydraulic static penetrating device on a seabed surface: putting the self-adjusting hydraulic static penetrating device into seawater through a rope and dropping the self-adjusting hydraulic static penetrating device onto the seabed surface, transmitting a posture condition, on the seabed surface, of the self-adjusting hydraulic static penetrating device through the second gyroscope, thereby obtaining an angle of a seabed slope; step 2, adjusting heights of the first jacks and the second jacks to allow the feeler lever to penetrate into a stratum in a vertical direction or at an angle perpendicular to the seabed surface: respectively calculating to-be-lifted heights of the four second jacks according to the angle of the seabed slope obtained in step 1 while the feeler lever needs to penetrate into the stratum in the vertical direction, to guarantee that the lower adjustable supporting platform is in a horizontal state; setting the angle of the seabed slope to be α, setting a height of the lower adjustable supporting platform to be h1, setting a length of the lower adjustable supporting platform to be a, setting a height of the upper adjustable penetrating platform to be h2, setting a length of the upper adjustable penetrating platform to be b, and lifting two second jacks at low positions by √{square root over ((a cos α−a).sup.2+(a sin α).sup.2)} while the lower adjustable supporting platform is in the horizontal state; when the feeler lever needs to penetrate into the stratum at the angle perpendicular to the seabed surface, lifting the two second jacks at the low positions by √{square root over ((a cos α−a).sup.2+(a sin α).sup.2)}, lifting two first jacks towards a high position of the seabed surface by $h_{1} - \frac{h_{1}}{\cos α} + \frac{a + b}{2} \sin α$ after the lower adjustable supporting platform is adjusted to be in the horizontal state, performing angle adjustment on the upper adjustable penetrating platform, and feeding back information through the first gyroscope to guarantee that the upper adjustable penetrating platform is parallel to the seabed surface; step 3, penetrating the feeler lever into the stratum of sediments; and step 4, withdrawing the feeler lever.

2. The penetrating method according to claim 1, wherein in step 1, the feeler lever sequentially passes through the feeler lever guide sleeve, the fixed mechanical clamping hand and the movable mechanical clamping hand, a lower end of the feeler lever passes through a hole of the feeler lever guide sleeve, and the fixed mechanical clamping hand and the movable mechanical clamping hand both clamp the feeler lever.

3. The penetrating method according to claim 1, wherein step 3 specifically comprises the following steps: step 3.1, clamping the feeler lever by the movable mechanical clamping hand, loosening the feeler lever by the fixed mechanical clamping hand, providing power by the hydraulic station and the oil cylinder, connecting a steel wire to the movable mechanical clamping hand through an upper fixed pulley group, a movable pulley group and a lower fixed pulley group, downwards moving the movable mechanical clamping hand on the slide rails, downwards moving the feeler lever at a uniform speed under a guide of the feeler lever guide sleeve, and finally penetrating the feeler lever into the stratum through the hole in a downward vertical direction or a direction perpendicular to the seabed surface; step 3.2, after the movable mechanical clamping hand accomplishes a stoke, clamping the feeler lever by the fixed mechanical clamping hand, loosening the feeler lever by the movable mechanical clamping hand, upwards moving the feeler lever along the slide rails to reach an arranging stoke start point; and repeating step 3.1 and step 3.2 until the feeler lever penetrates into a specified depth at the stratum of the sediments.

4. The penetrating method according to claim 1, wherein in step 4, the feeler lever is clamped by the movable mechanical clamping hand and loosened by the fixed mechanical clamping hand; after the movable mechanical clamping hand upwards moves at a uniform speed along the slide rails to accomplish one stroke, the feeler lever is clamped by the fixed mechanical clamping hand and is loosed by the movable mechanical clamping hand, and finally downwards moves to a withdrawing stroke start point until a withdrawing of the feeler lever is accomplished by repeating actions.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a structural diagram of the present invention;

(2) FIG. 2 is a structural diagram of an upper adjustable penetrating platform;

(3) FIG. 3 is a structural diagram of a lower adjustable supporting platform;

(4) FIG. 4 is a structural diagram of a feeler lever and a penetrating mechanism;

(5) FIG. 5 is a structural diagram of a penetrating mechanism;

(6) FIG. 6 is a schematic diagram of a first working state of the present invention;

(7) FIG. 7 is a schematic diagram of a second working state of the present invention;

(8) FIG. 8 is a structural diagram of putting the device onto a seabed surface;

(9) FIG. 9 is a structural diagram of vertically penetrating the device into a stratum; and

(10) FIG. 10 is a structural diagram of vertically penetrating the device into the stratum.

(11) In the figures: 1, upper adjustable penetrating platform; 2, lower adjustable supporting platform; 3, weighing hook; 4, steel structure frame; 5, semi-open protective plate; 6, hydraulic station; 7, jack I; 8, control cabinet; 9, penetrating mechanism; 11, balance weight; 12, gyroscope II; 13, hole; 14, jack II; 15, feeler lever; 16, movable mechanical clamping hand; 18, fixed movable pulley group; 20, fixed mechanical clamping hand; 21, feeler lever guide sleeve; 22, slide rail; 23, oil cylinder; 24, lower fixed pulley group; and 25, upper fixed pulley.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(12) In order to make the above-mentioned objectives, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

(13) In the following description, specific details are set forth for a comprehensive understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and a person skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

(14) As shown in FIG. 1, the self-adjusting hydraulic static penetrating device suitable for a land slope area includes an upper adjustable penetrating platform 1 and a lower adjustable supporting platform 2, where the upper adjustable penetrating platform 1 is fixedly arranged on the lower adjustable supporting platform 2. As shown in FIG. 2, the upper adjustable penetrating platform 1 is a working main body part of the device, and includes a rack, a control cabin 8, a penetrating mechanism 9, a hydraulic station 6, a balance weight 11 and jacks I 7, where the control cabin 8, the penetrating mechanism 9, the hydraulic station 6, the balance weight 11 and the jacks I 7 are all arranged on the rack; the rack includes a steel structure frame 4 and semi-open protective plates 5, where a bearing hook 3 which is connected with the rope while the device is arranged on the seabed or withdrawn onto a deck is arranged on the top of the steel structure frame 4, so that the device is guaranteed to be kept stable and not missing in the arranging or withdrawing process. The semi-open protective plates 5 are positioned on the four side surfaces of the steel structure frame 4, the semi-open protective plates 5 are punched steel plates, and upper parts and lower parts of the semi-open protective plates 5 are reinforced with beams, so that the stability of the overall structure is guaranteed. The semi-open protective plates 5 are used for protecting structures inside against dropping, and also have certain weakening effect on seabed subterranean flow. Four jacks I 7 are installed on the bottom of the steel structure frame 4 and are driven by the electric motor, so that height of each jack I 7 can be independently adjusted or integrally adjusted. The dip angle of the upper adjustable penetrating platform 1 can be adjusted by adjusting the four jacks I 7, so that the feeler lever perpendicularly penetrates into the sediments perpendicular to the stratum or at certain dip angle with the stratum; and the jacks I 7 are fixedly arranged on the lower adjustable supporting platform 2. A gyroscope I which is used as a sensitive element is fixedly arranged on the top of the balance weight 11 to provide signals such as accurate direction, level, position, speed and accelerated speed, so that the jacks I 7 can conveniently reach preset height; and it is guaranteed that the upper adjustable penetrating platform 1 is horizontal or reaches a preset angle.

(15) The control cabinet 8 is a high-pressure-resistant sealed cabinet body, a battery, a signal transmission mechanism and a control mechanism are arranged in the sealed cabinet body and are mainly used for power supply, data storage, data transmission, posture control, and the like.

(16) The hydraulic station 6 is a hydraulic source device or a hydraulic mechanism including a control valve therein, and includes a hydraulic pump, a drive electric motor, an oil tank, a directional valve, a throttle valve and an overflow valve, where the hydraulic station is connected with the control mechanism through an oil tube to supply oil with a flow direction, pressure and flow rate required by the control mechanism, so that the hydraulic mechanism can realize various specified actions.

(17) The balance weight 11 is mainly used for increasing the weight of the device to balance the gravity center of the device, so that an eccentric load is prevented from being generated on the lower part of the device; and meanwhile, penetrating force can be increased, so that the whole device will not be not supported by counterforce in the penetrating process.

(18) As shown in FIG. 4 and FIG. 5, the penetrating mechanism 9 includes a supporting frame, a plurality of groups of pulleys, a feeler lever 15, a movable mechanical clamping hand 16, a fixed mechanical clamping hand 20 and an oil cylinder 23, where the plurality of groups of the pulleys, the feeler lever 15, the movable mechanical clamping hand 16, the fixed mechanical clamping hand 20 and the oil cylinder 23 are arranged on the supporting frame. The fixed mechanical clamping hand 20 is fixedly arranged on the lower part of the supporting frame and the movable mechanical clamping hand 16 is positioned above the fixed mechanical clamping hand 20; slide rails 22 in the vertical direction are arranged at two sides of the movable mechanical clamping hand 16; the slide rails 22 are fixedly arranged on the supporting frame; the movable mechanical clamping hand 16 is connected with the steel wire; and under pulling of the steel wire, the movable mechanical clamping hand 16 can move vertically along the slide rails 22. Diesel oil is contained in the oil cylinder 23 to provide fuel power in a motion process of the feeler lever; and the oil cylinder 23 controls the steel wire to move, so that the pilot mechanical clamping hand ascends. Namely, the movable mechanical clamping hand 16 is connected with the oil cylinder 23 through the steel wire; and when the oil cylinder 23 acts, the steel wire drives the movable mechanical clamping hand 16 to move vertically.

(19) A feeler lever guide sleeve 21 is arranged on the bottom of the supporting frame; the feeler lever 15 sequentially passes through the feeler lever guide sleeve 21, the fixed mechanical clamping hand 20 and the movable mechanical clamping hand 16; and the feeler lever guide sleeve 21 guarantees the posture of the feeler lever 15, so that the feeler lever 15 is guided. In the embodiment, the feeler lever 15 is made of a steel structure, and may be a CPT feeler lever, a pore pressure feeler lever, a specific resistance feeler lever or any other sensor which can be used for detection or monitoring in the form of the feeler lever, and may be a main detection tool of the device.

(20) In the feeler lever penetrating or withdrawing process, the feeler lever 15 is clamped and fixed by the movable mechanical clamping hand 16 while the fixed mechanical clamping hand 20 is in a loose state; and the movable mechanical clamping hand 16 drives the fixed feeler lever 15 to vertically move in the process of moving vertically along the slide rails 22. When the movable mechanical clamping hand 16 loosens the feeler lever, the fixed mechanical clamping hand 20 clamps and fixes the feeler lever 15 to prevent the feeler lever from dropping.

(21) In the embodiment, the plurality of groups of the pulleys include an upper fixed pulley group 25, a lower fixed pulley group 24 and a movable pulley group 18, where the upper fixed pulley group 25 is positioned on the upper part of the supporting frame, the lower fixed pulley group 24 is positioned on the lower part of the supporting frame, and the movable pulley group 18 is positioned on the middle part of the supporting frame. The movable pulley group 18, the lower fixed pulley group 24 and the upper fixed pulley group 25 are used for sliding the steel wire in the penetrating or withdrawing process to assist in arranging or withdrawing of the feeler lever.

(22) As shown in FIG. 3, the lower adjustable supporting platform 2 includes a housing and jacks II 14, a hole 13 allowing the feeler lever to penetrate to leave a sufficient space is formed in the middle of the housing, so that the feeler lever can pass through the hole at any angle or can penetrate into the seabed sediments; the jacks II 14 are respectively arranged at the four corners of the bottom of the housing, and the height of each jack II 14 can be independently adjusted or integrally adjusted, so that it is guaranteed that the lower adjustable supporting platform 2 is kept in the horizontal state all the time on any seabed slope. A gyroscope II 12 is arranged in the lower adjustable supporting platform 2; and the gyroscope II 12 is used for detecting whether jacks II 14 reach preset height and guaranteeing that the lower adjustable supporting platform 2 is horizontal or reaches a preset angle. The lower adjustable supporting platform 2 achieves the effect of guaranteeing that the gravity center will not generate greater offset in the penetrating process, and providing enough supporting force.

(23) The present invention further discloses a penetrating method of the self-adjusting hydraulic static penetrating device suitable for a land slope area, including the following steps:

(24) Step 1, putting the device into seawater, and dropping the device on a seabed surface.

(25) The feeler lever 15 sequentially passes through the feeler lever guide sleeve 21, the fixed mechanical clamping hand 20 and the movable mechanical clamping hand 16, the lower end of the feeler lever 15 passes through the hole of the feeler lever guide sleeve 21, and the fixed mechanical clamping hand 20 and the movable mechanical clamping hand 16 both clamp the feeler lever 15.

(26) The device is put into seawater through a rope and dropped onto the seabed surface; and as shown in FIG. 8, a posture condition, on the seabed surface, of the device is transmitted through a gyroscope II 12, so that an angle of a seabed slope is obtained.

(27) Step 2, adjusting the height of the jacks I 7 and the jacks II 14 to enable the feeler lever 15 to penetrate into a stratum in a vertical direction or at an angle perpendicular to the seabed surface.

(28) To-be-lifted heights of the four jacks II 14 are respectively calculated according to the angle obtained in the first step of the seabed slope, so that it is guaranteed that the lower adjustable supporting platform 2 is horizontal, and the upper adjustable penetrating platform 1 also can be kept in the horizontal state. Whether the angle of the upper adjustable penetrating platform needs to be adjusted according to scientific needs is determined; if the feeler lever needs to vertically penetrate into the stratum according to the research, the state of the upper adjustable penetrating platform 1 is as shown in FIG. 6, and the device enters the working state of the feeler lever.

(29) An angle of the seabed slope is set to be alpha, the height of the lower adjustable supporting platform 2 is set to be h1, the length of the lower adjustable supporting platform is set to be a, the height of the upper adjustable penetrating platform 1 is set to be h.sub.2, and the length of the upper adjustable penetrating platform is set to be b. As shown in FIG. 8, coordinates of an initial point A in the figure are set to be (0, 0), and coordinates of a point B are set to be

(30) $(\frac{a + b}{2} \cos α, \frac{a + b}{2} \sin α + \frac{h_{1}}{\cos α}) .$

(31) When the lower adjustable supporting platform 2 is in the horizontal state, the coordinates of the point A′ are(a cos α−a, a sin α), that is, the jacks at the A need to lift by √{square root over ((a cos α−a).sup.2+(a sin α).sup.2)}.

(32) When the device needs to vertically penetrate into the stratum, as shown in FIG. 9, the jacks II 14 at A need to lift by √{square root over ((a cos α−a).sup.2+(a sin α).sup.2)}.

(33) If the study requires the feeler lever to penetrate into the stratum at an angle perpendicular to the seabed surface, the upper adjustable type penetrating platform 1 is subjected to angle adjustment after the lower adjustable supporting platform 2 is adjusted to be the horizontal state. Heights of the four jacks I 7 are respectively adjusted, and the gyroscope I feeds back information to guarantee that the upper adjustable type penetrating platform 1 is parallel to the seabed surface, and the working state of the device is as shown in FIG. 7.

(34) When the upper adjustable type penetrating platform 1 parallel to the seabed surface, the coordinates of the point B′ are

(35) $(\frac{a + b}{2} \cos α, h_{1} + a \sin α + b \sin α),$
that is, the jacks I 7 on B need to lift by

(36) $h_{1} - \frac{h_{1}}{\cos α} + \frac{a + b}{2} \sin α .$

(37) As a result, when the device needs to perpendicularly penetrates into the gravity center without offset, the jacks II 14 on A need to lift by √{square root over ((a cos α−a).sup.2+(a sin α).sup.2)}, and the jacks I 7 on B need to lift by

(38) $h_{1} - \frac{h_{1}}{\cos α} + \frac{a + b}{2} \sin α .$

(39) Step 3, penetrating the feeler lever into the stratum of the sediments.

(40) The feeler lever 15 is clamped by the movable mechanical clamping hand 16 and loosened by the fixed mechanical clamping hand 20; power is provided by the hydraulic station 6 and the oil cylinder 23, a steel wire is connected to the movable mechanical clamping hand 16 through an upper fixed pulley group 25, a movable pulley group 18 and a lower fixed pulley group 24; the movable mechanical clamping hand 16 downwards moves on slide rails 22, so that the feeler lever 15 moves downwards at a uniform speed under guide of the feeler lever guide sleeve 21, and finally penetrates into the stratum through the hole 13 in a downward vertical direction or a direction perpendicular to the seabed surface.

(41) Then, after the movable mechanical clamping hand 16 accomplishes a stoke, the feeler lever 15 is clamped by the fixed mechanical clamping hand 20 and is loosened by the movable mechanical clamping hand 16, and the feeler lever 15 moves upwards along the slide rails 2 to reach arranging an stoke start point.

(42) The two steps are repeated until the feeler lever 15 penetrates into the specified depth at the stratum of the sediments.

(43) Step 4, withdrawing the feeler lever.

(44) In the withdrawing process of the feeler lever, the feeler lever 15 is clamped by the movable mechanical clamping hand 16 and is loosened by the fixed mechanical clamping hand 20; after the movable mechanical clamping hand 16 upwards moves along the slide rails 22 at a uniform speed to accomplish one stoke, the feeler lever 15 is clamped by the fixed mechanical clamping hand 20 and is loosened by the movable mechanical clamping hand 16, and then moves downwards to the withdrawing stroke start point. The actions are repeated until the withdrawing of the feeler lever 15 is accomplished.

(45) The third step and the fourth step are repeated to accomplish the arranging and withdrawing work when the feeler lever is perpendicular to the stratum.

(46) Step 5, the feeler lever 15 can be replaced with a sampler to accomplish the steps, so that static sampling of sediment cylindrical samples, in the vertical direction or the direction perpendicular to the stratum of the seabed sediments can be realized.

(47) The above is a detailed description to the penetrating method of the self-adjusting hydraulic static penetrating device suitable for the land slope area provided by the present invention. Specific examples are used herein to illustrate the principle and embodiments of the present invention, which are only used to help understand the methods and core concept of the present invention. It should be noted that the improvements and the modifications made by a person of ordinary skill in the art without departing from the principle of the present invention shall be within the protection range of the claims of the present invention, The description of the disclosed embodiments enables a person skilled in the art to implement or use the present invention. Various modifications to the embodiments will be obvious to a person skilled in the art, and the general principle defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Penetrating method of self-adjusting hydraulic static penetrating device suitable for seabed slope area

Assignee

Inventors

Cpc classification

Classification Explorer

E02D15/08

FIXED CONSTRUCTIONS

Classification Explorer

E02D27/52

FIXED CONSTRUCTIONS

Classification Explorer

E02B17/0818

FIXED CONSTRUCTIONS

Classification Explorer

E02B17/06

FIXED CONSTRUCTIONS

International classification

Classification Explorer

E02B17/08

FIXED CONSTRUCTIONS

Classification Explorer

E02B17/06

FIXED CONSTRUCTIONS

Abstract

Claims

Description