CN207280721U - Anchoring system horizontal rigidity tests multidirectional hierarchical loading device - Google Patents

Abstract

The utility model relates to a multi-directional graded loading device for the horizontal stiffness test of a mooring system, comprising a fixed support frame and a model positioner. The fixed support frame is provided with a vertical adjustment mechanism, a longitudinal adjustment mechanism and a horizontal adjustment mechanism. On the fixed support frame, the longitudinal adjustment mechanism is installed on the vertical adjustment mechanism, while the horizontal adjustment mechanism is installed on the longitudinal adjustment mechanism, and the vertical, longitudinal and horizontal adjustment mechanisms are nested and installed in layers through the cooperation of sliding rods and sliders; The model positioner is connected to one end of the horizontal adjustment mechanism to clamp the test model, and limit nuts are correspondingly arranged on the adjustment mechanism in each direction to realize precise adjustment of displacement. The utility model cleverly uses the frame hierarchy structure to realize the offset adjustment of the three degrees of freedom of the loading device: surge, sway, and heave. At the same time, it can ensure that the test model is only free along a specific level during the process of applying the offset. One degree of freedom moves alone, and the other degrees of freedom do not move, which avoids errors caused by human operation, ensures the accuracy of the test, and improves the efficiency of the model test.

Description

Multi-directional step-by-step loading device for horizontal stiffness test of mooring system

technical field

The utility model relates to the technical field of ocean engineering pool model tests, in particular to a multi-directional graded loading device for the horizontal stiffness test of a mooring system.

Background technique

With the decrease of land oil and gas resources, the development of offshore oil and gas resources has become an important support and strategic measure for the sustainable development of oil and gas resources. The development of offshore oil and gas resources has become an important frontier of science and technology. As one of the basic facilities for the development of offshore oil and gas resources, the performance of the floating structure system plays a decisive role in the safe development of offshore oil and gas resources. The pool model test is an effective means to predict and study the performance of marine structures, especially for new floating structures. For the study of hydrodynamic performance of structural systems, model testing is an indispensable tool.

The floating body structure is usually positioned by a mooring system, which can ensure that the floating body structure moves within a certain range under the action of external loads. Studies have shown that the horizontal stiffness of the mooring system is closely related to the movement of the floating body structure. The horizontal stiffness of the mooring system refers to the relationship between the displacement and the force of the floating body structure under the action of external static load. In order to ensure that the motion response results of the model test are close to the real results, it is necessary to measure and check the horizontal stiffness of the designed model mooring system before the formal start of the model test. Since the mooring system only has a great influence on the three degrees of freedom (surge, sway and yaw) on the horizontal plane, it is usually necessary to consider several different forces when conducting the horizontal stiffness test of the entire mooring system Directions, such as longitudinal and transverse, or along the direction of a single mooring line and along the direction between two mooring lines, the choice of direction during the test must be determined according to the actual requirements of different mooring systems.

The horizontal stiffness of the mooring system of the prototype can be easily calculated by software. In the process of calculation, a constant external force load is applied step by step along a certain horizontal degree of freedom of the floating body, so that the structure produces a certain offset, and the force of the structure is obtained, which is drawn as an offset-load curve, that is, the level of the mooring system stiffness curve. During the model test, it is usually necessary to carry out unidirectional and multi-level displacement loading on the model, and then obtain the displacement-load curve. However, it should be noted that in the process of migration, it is necessary to ensure that there is no displacement in other degrees of freedom except for the degree of freedom that needs to be measured, otherwise the measured mooring cable tension will contain components corresponding to the forces on other degrees of freedom, resulting in measurement results Inaccurate.

In the existing model test technology, the method of weight loading is usually used to achieve the offset of the physical model, that is, the floating structure and its mooring and riser system are installed in the pool, and a light rope passes through the pulley and The model is connected, and the measurement model is thus statically offset. By changing the magnitude of the horizontal force, multiple corresponding offsets are obtained, so as to measure the offset-load characteristic curve of the mooring system. The advantage of this method is that it is simple in principle and easy to implement. Its disadvantages are:

(1) The light rope used has strong nonlinear characteristics. When the weight is small, it can be considered that the light rope has linear characteristics, and its displacement error can be properly corrected; but with the increase of the weight , the non-linearity of the light rope is gradually enhanced, and the displacement error of the measurement will gradually increase, resulting in an error in the measurement result;

(2) The applied gravity load acts on the model through the pulley, and the pulley itself has a large friction effect, so the force applied to the model is not strictly equal to the gravity of the weight applied;

(3) The combination of light ropes, pulleys and heavy objects does not guarantee that the model will be shifted strictly along a certain direction, and the model will generate displacements in other degrees of freedom during the shifting process, resulting in measurement errors;

(4) The external load applied to the model through the pulley may have a certain angle with the horizontal plane of the model, so the horizontal load actually acting on the model is only a horizontal component of the gravity of the heavy object, resulting in measurement errors;

(5) During the measurement process, the model may undergo reciprocating motion under the action of the mooring system, and it takes a long time to stabilize. The measurement process is time-consuming and the measurement results are inaccurate.

In short, when the horizontal stiffness displacement loading of the mooring system is carried out by the existing technologies and methods, the displacement and force cannot be measured quickly and accurately. Realistic motion response of the prototype.

Therefore, it is urgent to propose a device that can realize the one-time accurate loading of the model displacement along a certain direction. Combined with the value corresponding to the tension sensor on the mooring cable, the horizontal stiffness of the mooring system can be obtained through processing, which will greatly improve the accuracy of the model test. Accuracy, reducing the preparation time of model tests and reducing the cost of model tests are of great significance to the smooth development of model tests.

Utility model content

The technical problem to be solved by the utility model is to solve the defect that the existing model cannot move strictly in a specific direction during the process of applying the load, and other degrees of freedom are likely to be displaced during the offset process, resulting in inaccurate measurement results. A mooring system level mooring system is proposed. Stiffness test multi-directional staged loading device to achieve accurate measurement of the horizontal stiffness of the test model mooring system.

The utility model is realized by adopting the following technical solutions: a multi-directional loading device for the horizontal stiffness test of the mooring system, including a fixed support frame and a model positioner, and the model positioner is used to clamp the test model; The test model is a vertical adjustment mechanism, a longitudinal adjustment mechanism and a horizontal adjustment mechanism for adjusting up and down, front and back, and left and right; the fixed support frame is the basis of the entire loading device, and is a three-dimensional structure composed of a vertical slide bar and a horizontal strut. The whole device is supported, and a vertical adjustment mechanism adjustment plate is arranged between the two horizontal struts above the fixed support frame, and a vertical limit hole is arranged on the vertical adjustment mechanism adjustment plate;

The vertical adjustment mechanism includes a vertical displacement frame and a vertical displacement adjustment rod arranged on the vertical displacement frame, and the vertical displacement frame is arranged on the vertical slide bar and is located inside the fixed support frame; the vertical displacement adjustment The rod passes through the vertical limit hole, and can move up and down along the vertical limit hole under the action of external force, and then drives the vertical displacement frame to move up and down along the vertical sliding rod under the action of the vertical displacement adjustment rod; the vertical displacement The frame is also provided with a longitudinal slide bar and a longitudinal adjustment mechanism adjustment plate, the straight line where the longitudinal slide bar is located is perpendicular to the plane where the longitudinal adjustment mechanism adjustment plate is located, and a longitudinal limit hole is arranged on the longitudinal adjustment mechanism adjustment plate;

The longitudinal adjustment mechanism includes a longitudinal displacement frame and a longitudinal displacement adjustment rod arranged on the longitudinal displacement frame, the longitudinal displacement frame is arranged on the longitudinal slide bar and is located inside the vertical displacement frame; the longitudinal displacement adjustment rod passes through the longitudinal limit hole, and can move back and forth along the longitudinal limit hole under the action of external force, and then drive the longitudinal displacement frame to move back and forth along the longitudinal sliding rod under the action of the longitudinal displacement adjustment rod; The straight line where the through hole of the adjustment mechanism is located is perpendicular to the straight line where the longitudinal displacement adjustment rod is located, and both are on the same horizontal plane;

The lateral adjustment mechanism includes a lateral displacement slide bar, a lateral displacement adjustment rod and a lateral displacement adjustment plate; the lateral displacement adjustment plate is provided with a lateral limit hole, and the lateral displacement adjustment rod is connected to the longitudinal displacement frame through the lateral limit hole, and the lateral displacement The displacement adjustment plate moves left and right along the lateral displacement adjustment rod under the action of external force; one end of the lateral displacement slider is set on the lateral displacement adjustment plate, and the other end passes through the through hole of the lateral adjustment mechanism on the longitudinal displacement frame to connect with the model positioner, and the lateral displacement The displacement slide bar can move left and right along the through hole of the transverse adjustment mechanism.

Further, the model positioner includes two positioning plates arranged in parallel, the positioning plates are high-strength polyester plates, the two positioning plates are connected by clamping bolts, and the distance between the two positioning plates can be adjusted through the clamping bolts. The distance between them is suitable for different models; and there are multiple stoppers on the two positioning plates to fix the test model.

Further, the limiter includes an adjusting screw screwed to the positioning plate, one end of the adjusting screw is provided with a limiting plate, and the other end is provided with an adjusting handle; the limiting plate is spherically hinged with the adjusting screw, and the limiting plate is provided with The anti-skid rubber layer is used to limit and protect the model, and the test models of different shapes can be clamped through the cooperation of multiple limiters.

Further, the vertical limit hole, the horizontal limit hole and the longitudinal limit hole are all threaded through holes, and the vertical displacement adjustment rod, the lateral displacement adjustment rod and the longitudinal displacement adjustment rod are screw rods, and are connected to the threaded through holes. Cooperate.

Further, one end of the vertical displacement adjustment rod is provided with a conveniently adjustable twist handle, the other end is arranged on the vertical displacement frame through a spherical hinge, connected with the vertical displacement frame through a ball joint, and connected with the vertical limit Holes (threaded through holes) are matched, and the vertical displacement adjustment rod can be adjusted by turning the handle to adjust the up and down displacement of the entire vertical adjustment mechanism, and the longitudinal displacement adjustment rod and the lateral displacement adjustment rod respectively adopt spherical hinges with the same structural principle It is arranged on the longitudinal displacement frame and the lateral displacement frame, and the longitudinal displacement adjustment rod and the lateral displacement adjustment rod are vertical and on the same horizontal plane.

Further, the spherical hinge includes a hinge block, a spherical cavity is arranged on the hinge block, and the ends of the vertical displacement adjustment rod, the longitudinal displacement adjustment rod and the lateral displacement adjustment rod are provided with spherical protrusions adapted to the spherical cavity , and can rotate in the spherical cavity.

Further, the vertical displacement adjustment rod is also provided with two vertical limit blocks that can move along it, and the two vertical limit blocks are respectively arranged on both sides of the adjustment plate of the vertical adjustment mechanism; the longitudinal displacement adjustment The rod is also provided with two longitudinal limit blocks that can move along it, and the two longitudinal limit blocks are respectively arranged on both sides of the adjustment plate of the longitudinal adjustment mechanism; the lateral displacement adjustment rod is also provided with two movable along it. Horizontal limit block, two horizontal limit blocks are respectively set on both sides of the lateral displacement adjustment plate, before adjusting, first turn the limit block in the corresponding moving direction to the specified position, and then adjust the corresponding displacement adjustment lever to the specified position , to prevent too much or too much loading displacement, so as to ensure the success of one-time displacement loading and avoid repeated adjustments.

Further, the vertical adjustment mechanism is installed on the vertical slide bar through the vertical wedge-shaped slider, and can move up and down along the vertical slide bar; the longitudinal adjustment mechanism is installed on the vertical slide bar through the vertical wedge-shaped slider, and Can move forward and backward along the vertical slider.

Further, the vertical displacement adjustment rod, the longitudinal displacement adjustment rod and the lateral displacement adjustment rod are also equipped with indicating scales and corresponding pointers, and the displacement can be directly read through the indicating scales or pointers, so as to realize the accuracy of the test model. Adjustment.

Further, in order to ensure the stability of the fixed support frame in the process of applying load, the bottom end of the fixed support frame is symmetrically provided with balance bars for balancing and ballasting heavy objects, so as to improve the balance and stability of the entire system .

Compared with the prior art, the utility model has the advantages and positive effects that:

The mooring system horizontal stiffness test multi-directional grading loading device proposed by the utility model is the first mooring system horizontal stiffness test multi-directional grading loading device in the field of pool model test technology, by installing the vertical adjustment mechanism on the fixed support frame , the vertical adjustment mechanism is installed on the vertical adjustment mechanism, and the horizontal adjustment mechanism is installed on the longitudinal adjustment mechanism. The hierarchical structure of the frame realizes the offset adjustment of the three degrees of freedom of the loading device, surge, sway, and heave. At the same time, it can ensure that during the process of applying the offset, the test model only moves along a certain horizontal degree of freedom, and the other degrees of freedom No movement occurs, avoiding the error caused by human operation, ensuring the accuracy of the test and improving the efficiency of the model test;

The utility model realizes the precise positioning of the offset by setting limit blocks on the displacement adjustment rods in all directions, and at the same time operates in one step to avoid repeated adjustments; moreover, when the model positioner is clamped, a small limit is used The limiter includes an adjusting screw threadedly connected with the positioning plate. A limiting plate is provided at one end of the adjusting screw. The limiting plate is spherically hinged with the adjusting screw, and an anti-slip rubber layer is provided on the limiting plate, which can be used for different shapes. The structure of the test model is clamped, and the setting of the rubber layer also prevents the stopper from damaging the test model, which can adapt to the uneven surface. The use of multiple stoppers together realizes the function of limiting the movement of the model. The structural design is ingenious. It has extensive promotion and practical value.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the displacement loading device described in the embodiment of the present invention;

Fig. 2 is the utility model embodiment is provided with the displacement loading device structural representation of test model;

Fig. 3 is a schematic structural view of the fixed support frame according to the embodiment of the present invention;

Fig. 4 is a schematic structural diagram of the vertical adjustment mechanism described in the embodiment of the present invention;

Fig. 5 is a schematic diagram of the structure of the cooperation between the vertical adjustment mechanism and the fixed support frame of the embodiment of the utility model;

Fig. 6 is a schematic structural view of the longitudinal adjustment mechanism according to the embodiment of the present invention;

Fig. 7 is a schematic diagram of the structure of the cooperation between the longitudinal adjustment mechanism and the vertical displacement frame of the embodiment of the utility model;

Fig. 8 is a structural schematic diagram of the cooperation between the lateral adjustment mechanism and the longitudinal displacement frame according to the embodiment of the present invention;

Fig. 9 is a schematic diagram of the connection structure between the lateral adjustment mechanism and the model positioner of the embodiment of the utility model;

Fig. 10 is a schematic structural diagram of the model locator described in the embodiment of the present invention;

Fig. 11 is a schematic structural diagram of a spherical hinge according to an embodiment of the present invention;

Fig. 12 is a schematic cross-sectional structure diagram of the spherical hinge in Fig. 11;

Fig. 13 is a schematic diagram of the structure of the limiter of the embodiment of the utility model.

Detailed ways

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments, and many specific details have been set forth in the following description so as to fully understand the utility model, but , the utility model can also be implemented in other ways than those described here, and is not limited to the specific embodiments disclosed below. It should be noted that the "up and down", "left and right", and "front and rear" The positional relationship is based on the orientation shown in Figure 1. The direction A points to is up, and the direction A' points to is down; the direction B points to is front, and the direction B' points to back; 'points to the right.

With reference to Fig. 1 and Fig. 2, this embodiment discloses a kind of mooring system horizontal rigidity test multi-directional staged loading device, comprises fixed support frame 1 and model positioner 2, and model positioner 2 is used for clamping test model 10; The support frame 1 is provided with a vertical adjustment mechanism 3, a longitudinal adjustment mechanism 4 and a horizontal adjustment mechanism 5 for adjusting the test model 10 up and down, front and back, and left and right respectively. The form of cooperation is connected, so that the levels of the three adjustment mechanisms are coordinated and installed; the model positioner 2 is connected to one end of the lateral adjustment mechanism 5, and can fasten the test model 10 and the lateral adjustment mechanism 5 to form a rigid body to realize synchronous movement; Adjust the corresponding adjustment mechanism to realize the displacement loading of the test model in the vertical, longitudinal and lateral degrees of freedom, and the entire displacement loading device can move in strict accordance with a certain direction, combined with the corresponding tension on the tension sensor on the mooring cable of the experimental model After the displacement is loaded step by step, the horizontal stiffness curve of the mooring system can be obtained.

As shown in Figure 3, the fixed support frame 1 is the basis of the entire loading device, which is a three-dimensional structure composed of a vertical slide bar 11 and a transverse strut 12, supporting the entire device, and its shape and specific settings are not limited. In this embodiment, a rectangular frame is preferred, and a vertical adjustment mechanism adjustment plate 13 is also provided between the two horizontal struts 12 above the fixed support frame 1, and a vertical limit hole 14 is arranged on the vertical adjustment mechanism adjustment plate 13 ; And in order to ensure the stability of the fixed support frame 1 in the process of applying load, the bottom end of the fixed support frame is also symmetrically provided with a balance bar 15, which is used for balancing and ballasting heavy objects, in order to improve the balance and stability of the whole system .

In this embodiment, the vertical adjustment mechanism 3 includes a vertical displacement frame 31 and a vertical displacement adjustment rod 32 arranged on the vertical displacement frame 31, as shown in Fig. 4 and Fig. 5, the vertical displacement frame 31 is arranged on the vertical to the slide bar 11, and is located inside the fixed support frame 1; the vertical displacement adjustment rod 32 passes through the vertical limit hole 14, and can move up and down along the vertical limit hole under the action of external force, the vertical limit The bit hole 14 is a threaded through hole, and the vertical displacement adjusting rod 32 is a screw rod, and then drives the vertical displacement frame 31 to move up and down along the vertical slide bar 11 under the effect of the vertical displacement adjusting rod 32; A longitudinal slide bar 33 and a longitudinal adjustment mechanism adjustment plate 34 are provided, and a longitudinal limit hole 35 is arranged on the longitudinal adjustment mechanism adjustment plate 34;

The longitudinal adjustment mechanism 4 includes a longitudinal displacement frame 41 and a longitudinal displacement adjustment rod 42 arranged on the longitudinal displacement frame 41. With reference to FIGS. inside; the longitudinal displacement adjusting rod 42 passes through the longitudinal limiting hole 35, and can move back and forth along the longitudinal limiting hole 35 under the action of an external force, and then drives the longitudinal displacement frame 41 to move along the longitudinal sliding rod under the effect of the longitudinal displacement adjusting rod 42 33 moves back and forth; the longitudinal displacement frame 41 is also provided with a horizontal adjustment mechanism through hole 43, and the straight line where the horizontal adjustment mechanism through hole 43 is located is perpendicular to the straight line where the longitudinal displacement adjustment rod 42 is located, and both are on the same horizontal plane;

8 and 9, the lateral adjustment mechanism 5 includes a lateral displacement slide bar 51, a lateral displacement adjustment rod 52 and a lateral displacement adjustment plate 53; the lateral displacement adjustment plate 53 is provided with a lateral limit hole 54, and the lateral displacement adjustment rod 52 is connected to the longitudinal displacement frame 41 through the lateral limit hole 54, and there are two lateral displacement slide bars 51, which are respectively located on both sides of the lateral displacement adjustment rod 52, one end of which is arranged on the lateral displacement adjustment plate 53, and the other end passes through The through hole 43 of the horizontal adjustment mechanism on the longitudinal displacement frame 41 is connected with the model positioner 2 , and the lateral displacement slide bar 51 can move left and right along the through hole 43 of the horizontal adjustment mechanism.

As mentioned above, the vertical adjustment mechanism 3 is installed on the vertical slide bar 11 through the vertical wedge-shaped slider 36, and can move up and down along the vertical slide bar 11; on the bar 33, and can move back and forth along the longitudinal slide bar 33; and the vertical limit hole 14, the horizontal limit hole 54 and the longitudinal limit hole 35 described in this embodiment are all threaded through holes, and the vertical displacement adjustment The rod 32, the lateral displacement adjustment rod 52 and the longitudinal displacement adjustment rod 42 are screw rods, and cooperate with the threaded through holes. The lateral displacement adjustment plate 53 moves left and right relative to the lateral displacement adjustment rod 52 under the action of the external screwing force. As can be seen from Fig. 4-Fig. 5, one end of the vertical displacement adjusting rod 32 is provided with a conveniently adjusted screw handle 321, and the other end is arranged on the vertical displacement frame 31 through a spherical hinge 37, and the ball joint and the vertical The displacement frame is connected and matched with the vertical limit hole 14 (threaded through hole), the vertical displacement adjustment rod 32 can be rotated by the screw handle 321 to adjust the up and down displacement of the entire vertical adjustment mechanism 3, and then drive the model positioner 2 Realize moving up and down, in conjunction with Fig. 6-Fig. 9, the structural design of the same principle is adopted between the longitudinal displacement adjustment rod 42 and the lateral displacement adjustment rod 52 and the longitudinal displacement frame, that is, the longitudinal displacement adjustment rod 42 and the lateral displacement adjustment rod 52 respectively pass through its Corresponding spherical hinges ( 45 , 55 ) are arranged on the longitudinal displacement frame 41 .

With reference to Fig. 11 and Fig. 12, described spherical hinge (37,45,55) comprises a hinge block 371, is provided with a spherical cavity 372 on the hinge block, vertical displacement adjustment rod 32, longitudinal displacement adjustment rod 42 and lateral displacement adjustment The ends of the rod 52 are respectively provided with spherical protrusions 373 adapted to the spherical cavity 372, and can rotate in the spherical cavity 372; Displacement in all directions can be realized by twisting the displacement adjustment rod, and the structure design is ingenious.

Referring to Fig. 10, the model positioner 2 includes two positioning plates 21 arranged in parallel, the positioning plates 21 are high-strength polyester plates, the two positioning plates 21 are connected by clamping bolts 22, and can be connected by clamping bolts 22 adjust the distance between the two positioning plates 21 to adapt to different models; a plurality of stoppers 23 are also arranged on the two positioning plates 21 to fix the test model; with reference to Fig. 13, the stoppers 23 It includes an adjusting screw 231 threaded with the positioning plate 21, one end of the adjusting screw is provided with a limiting plate 232, and the other end is provided with an adjusting handle 233; as can be seen from the figure, the limiting plate 232 is spherically hinged with the adjusting screw 231, and the limiting A non-slip rubber layer is provided on the positioning plate 232 to limit and protect the model. The test models of different shapes can be clamped by the cooperation of multiple limiters 23. Of course, in addition to the above-mentioned model positioning According to the structure of the device, other mechanism designs can also be used, as long as the clamping of the test model can be realized.

In order to realize the precise adjustment of the test model, it is important that in this embodiment, the vertical displacement adjustment rod 32 is also provided with two vertical limit blocks 38 that can move along it, and the two vertical limit blocks The blocks 38 are respectively arranged on both sides of the adjustment plate 13 of the vertical adjustment mechanism; the longitudinal displacement adjustment rod 42 is also provided with two longitudinal limit blocks 46 which can move along it, and the two longitudinal limit blocks 46 are respectively arranged on the longitudinal adjustment position. Both sides of the mechanism adjustment plate 34; the lateral displacement adjustment rod 52 is also provided with two lateral limit blocks 56 that can move along it, and the two lateral limit blocks 56 are respectively arranged on both sides of the lateral displacement adjustment plate 54, the above-mentioned Each limit block is in the form of a limit nut. Before adjusting, first turn the limit block in the corresponding moving direction to the specified position, and then adjust the corresponding displacement adjustment lever to the specified position to prevent excessive loading displacement. Ensure the success of one-time displacement loading and avoid repeated adjustments; moreover, the vertical displacement adjustment rod 32, the longitudinal displacement adjustment rod 42 and the lateral displacement adjustment rod 52 are also provided with indicating scales and corresponding pointers, which can be directly read through indicating scales or pointers. Take the amount of displacement to achieve precise adjustments to the test model.

In this embodiment, the vertical adjustment mechanism 3 is installed on the fixed support frame 1, the longitudinal adjustment mechanism 4 is installed on the vertical adjustment mechanism 3, and the horizontal adjustment mechanism 5 is installed on the longitudinal adjustment mechanism 4, vertical, vertical, horizontal The adjustment mechanisms are coordinated in layers and installed nestedly. The up and down movement of the vertical adjustment mechanism can drive the vertical adjustment mechanism and the horizontal adjustment mechanism to move up and down together, and the vertical adjustment mechanism can independently drive the horizontal adjustment mechanism installed on it to move back and forth; The horizontal adjustment mechanism can not only move left and right alone, but also can move up and down, forward and backward driven by the vertical and longitudinal adjustment mechanisms. Therefore, the horizontal adjustment mechanism has the ability to move in three degrees of freedom. The rod realizes the up-and-down, front-back or left-right movement of the corresponding adjustment mechanism, and then drives the model positioner 2 to move in a specific direction.

The following is a detailed description of the lateral and horizontal stiffness displacement loading of the test model:

First, place the test model in the designed position in the pool and arrange the mooring system. Put the utility model device into the pool, adjust the clamping bolts on the model positioner, adjust the two positioning plates to a suitable position, and then adjust the vertical adjustment mechanism to a suitable height through the vertical displacement adjustment rod, so that The model is just in the middle of the two positioning plates, adjust the small stopper on the model positioner, and clamp the model through the mutual cooperation of multiple small stoppers, so that the model and the entire loading device form a rigid body;

After the model is positioned, in order to measure the lateral horizontal stiffness of the model and apply a lateral target displacement to the model, firstly adjust the limit block (i.e. the limit nut) on the lateral displacement adjustment rod so that the limit nut is in contact with one end of the lateral adjustment mechanism. The distance is the required target displacement, and then turn the horizontal adjustment lever to gradually adjust the displacement of the model in the left and right directions. When the target displacement is reached, the horizontal adjustment mechanism will be limited by the limit nut and stop the displacement, so that the displacement adjustment mechanism can accurately produce the desired displacement. For the displacement in the desired direction, read the value on the tension sensor on the mooring cable, and obtain the force of the corresponding displacement after processing. The force corresponding to different displacements is obtained, and the recorded data is processed to obtain the deflection-load curve of the mooring system, that is, the horizontal stiffness curve of the system. The longitudinal and vertical horizontal stiffness measurement methods of the model are similar to this and will not be repeated here.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. The equivalent embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present utility model still belong to the technical solution of the present utility model scope of protection.

Claims (10)

1. anchoring system horizontal rigidity tests multidirectional hierarchical loading device, it is characterised in that determines including fixing support rack and model Position device, model locator is clamping test model；Be provided with fixing support rack to test model is carried out respectively up and down, Front and rear and left and right adjustment vertical adjustment mechanism, longitudinally adjusted mechanism and transverse adjusting mechanism；

The fixing support rack is to form stereochemical structure by vertical slide bar and lateral strut, and is also set in the top of fixing support rack A vertical adjustment mechanism adjustment plate is equipped with, a vertical spacing hole is provided with vertical adjustment mechanism adjustment plate；

The vertical adjustment mechanism includes vertical displacement frame and the vertical displacement adjusting rod being arranged on vertical displacement frame, vertically Displacement frame is arranged on vertical slide bar, and positioned at the inside of fixing support rack；Vertical displacement adjusting rod passes through vertical spacing hole, and Can vertically limit hole moves up and down under external force, and then drive vertical displacement frame moved up and down along vertical slide bar；It is perpendicular Longitudinal slide bar and longitudinally adjusted institutional adjustment plate are additionally provided with to displacement frame, one is provided with longitudinally adjusted institutional adjustment plate Longitudinal spacing hole；

The longitudinally adjusted mechanism includes length travel frame and the length travel adjusting rod being arranged on length travel frame, longitudinal direction Displacement frame is arranged on longitudinal slide bar, and positioned at the inside of vertical displacement frame；Length travel adjusting rod passes through longitudinal spacing hole, and It can be moved back and forth under external force along longitudinal spacing hole, and then drive length travel frame to be moved back and forth along longitudinal slide bar；It is vertical Transverse adjusting mechanism through hole is additionally provided with to displacement frame；

The transverse adjusting mechanism includes lateral displacement slide bar, lateral displacement adjusting rod and lateral displacement adjustment plate；Horizontal position Cross spacing hole is provided with transposition whole plate, lateral displacement adjusting rod is connected through cross spacing hole with length travel frame, laterally Transversely displacement adjusting rod moves left and right adjustment of displacement plate under external force；Lateral displacement slide bar one end is arranged on lateral displacement In adjustment plate, the other end is connected through the transverse adjusting mechanism through hole on length travel frame with model locator, and lateral displacement Slide bar can transversely adjustment mechanism through hole move left and right.

2. anchoring system horizontal rigidity according to claim 1 tests multidirectional hierarchical loading device, it is characterised in that：It is described Model locator includes two positioning plates being arranged in parallel, and two positioning plates are connected by fishbolt, and can be by clamping spiral shell Bolt adjusts the distance between two positioning plates；And multiple limits that test model is fixed are additionally provided with two positioning plates Position device.

3. anchoring system horizontal rigidity according to claim 2 tests multidirectional hierarchical loading device, it is characterised in that：It is described Limiter includes the adjusting screw rod being threadedly coupled with positioning plate, and adjusting screw rod one end is provided with limiting plate, and the other end is provided with tune Save handle；Limiting plate and adjusting screw rod globular hinge, and anti-slip rubber layer is provided with limiting plate.

4. the anchoring system horizontal rigidity according to claim 1 or 3 tests multidirectional hierarchical loading device, it is characterised in that： The vertical spacing hole, cross spacing hole and longitudinal spacing hole are tapped through hole, and vertical displacement adjusting rod, lateral displacement are adjusted Bar and length travel adjusting rod are screw rod, and are engaged with tapped through hole.

5. anchoring system horizontal rigidity according to claim 4 tests multidirectional hierarchical loading device, it is characterised in that：It is described Vertical displacement adjusting rod one end, which is provided with, screws handle, and the other end is arranged on vertical displacement frame by a globular hinge device, and vertical It is separately positioned on to displacement adjusting rod with lateral displacement adjusting rod using mutually isostructural globular hinge device on length travel frame.

6. anchoring system horizontal rigidity according to claim 5 tests multidirectional hierarchical loading device, it is characterised in that：It is described Globular hinge device includes a hinged block, and a spherical cavity is provided with hinged block；Vertical displacement adjusting rod, length travel adjusting rod and The end set of lateral displacement adjusting rod has the hemisphere jut being adapted to spherical cavity, and hemisphere jut can rotate in spherical cavity.

7. the anchoring system horizontal rigidity according to claim 3 or 6 tests multidirectional hierarchical loading device, it is characterised in that： The two vertical spacing blocks that can be moved along it are additionally provided with the vertical displacement adjusting rod, two vertical spacing blocks are set respectively In the both sides of vertical adjustment mechanism adjustment plate；Two longitudinal spacings that can be moved along it are additionally provided with length travel adjusting rod Block, two longitudinal spacing blocks are separately positioned on the both sides of longitudinally adjusted institutional adjustment plate；It is additionally provided with lateral displacement adjusting rod The two cross spacing blocks that can be moved along it, two cross spacing blocks are separately positioned on the both sides of lateral displacement adjustment plate.

8. anchoring system horizontal rigidity according to claim 7 tests multidirectional hierarchical loading device, it is characterised in that：It is described Vertical adjustment mechanism be installed on by vertical wedge block on vertical slide bar, and can vertically slide bar move up and down；Adjust longitudinal direction Complete machine structure is installed on longitudinal slide bar by longitudinal wedge block, and can be moved back and forth along longitudinal slide bar.

9. anchoring system horizontal rigidity according to claim 7 tests multidirectional hierarchical loading device, it is characterised in that：It is described Indicating graduation and corresponding pointer are additionally provided with vertical displacement adjusting rod, length travel adjusting rod and lateral displacement adjusting rod.

10. anchoring system horizontal rigidity according to claim 7 tests multidirectional hierarchical loading device, it is characterised in that：Institute The bottom for stating fixing support rack is symmetrically arranged with balancing pole.