Latch state detection device and lifting system

Abstract

The present disclosure provides a detection device and lifting system for the state of a latch, which belongs to the field of offshore platforms. The detection device includes a fixed bracket and a plurality of detection components; the fixed bracket is used to connect with the ring beam of the latch lifting system; the detection component is connected to the fixed bracket, and the detection component corresponds to the latch on the ring beam one by one. In the axial direction of the ring beam, the detection component is located on one side of the corresponding latch, and the sensing end of the detection component faces the pile leg, and the detection component is a symmetrical structure; when the latch to be detected is located in the first latch hole, the detection component is used to output an indication signal according to the positional relationship between the sensing end of the detection component and the second latch hole, and the indication signal is used to indicate the state of the latch in the first latch hole, and the distance between the first latch hole and the second latch hole is equal to the distance between the symmetry axis of the detection component and the center line of the latch. The present disclosure can automatically identify the specific state of the latch in the latch hole through the detection device.

Description

Technical Field

[0001] The present invention belongs to the field of offshore platforms, and in particular relates to a detection device for a latch state and a lifting system. Background Art

[0002] The latch lifting system is a system that uses the coordinated action of a hydraulic lifting cylinder and a latch cylinder to lift and lower an offshore platform or a pile leg. The latch lifting system includes a pile frame fixedly connected to the offshore platform, a fixed ring beam connected to the pile frame, a movable ring beam arranged opposite to the fixed ring beam, a lifting cylinder installed between the movable ring beam and the fixed ring beam, a latch cylinder installed on the movable ring beam and the fixed ring beam respectively, and a latch fixedly connected to the latch cylinder. The lifting cylinder provides a lifting driving force for the latch lifting system, and the latch cylinder is used to drive the latch to be inserted into the latch hole of the pile leg so as to fix the relative position of the movable ring beam or the fixed ring beam and the pile leg.

[0003] In the related art, the latch lifting system needs to determine the specific state of the latch in the latch hole when switching between different working conditions. The specific state of the latch in the latch hole is generally determined based on the experience of the operator.

[0004] However, judging the specific state of the bolt in the bolt hole based on the experience of the operator is limited by the experience and understanding of the operator, and different errors may occur, thus leading to misjudgment. Summary of the invention

[0005] The embodiment of the present disclosure provides a detection device for the state of a latch and a lifting system, which can automatically identify the specific state of the latch in the latch hole. The technical solution is as follows:

[0006] The disclosed embodiment provides a device for detecting a latch state, the device comprising a fixed bracket and a plurality of detection components; the fixed bracket is used to be connected to a ring beam of a latch lifting system; the detection component is connected to the fixed bracket, the detection component corresponds to the latch on the ring beam one by one, in the axial direction of the ring beam, the detection component is located on one side of the corresponding latch, and the sensing end of the detection component faces the pile leg, and the detection component is a symmetrical structure; when the latch to be detected is located in a first latch hole, the detection component is used to output an indication signal according to the positional relationship between the sensing end of the detection component and the second latch hole, the indication signal is used to indicate the state of the latch in the first latch hole, and the distance between the first latch hole and the second latch hole is equal to the distance between the symmetry axis of the detection component and the center line of the latch.

[0007] In another implementation of the present disclosure, the detection assembly includes a first detection element and a second detection element, the first detection element and the second detection element are arranged at intervals along the extension direction of the center line of the ring beam, and the sensing end of the first detection element and the sensing end of the second detection element are both facing the pile leg, the first detection element is located above the second detection element, and along the axis direction of the ring beam, the minimum spacing between the sensing end of the first detection element and the sensing end of the second detection element is equal to the maximum distance between the upper peripheral wall and the lower peripheral wall of the bolt; the indication signal includes a first signal output by the first detection element and a second signal output by the second detection element; when the first signal indicates that the first detection element and the second detection element are When the latch holes are aligned and the second signal indicates that the second detection element is not aligned with the second latch hole, the latch is in a first state, and the first state is that the latch contacts the upper edge of the first latch hole; when the first signal indicates that the first detection element is not aligned with the second latch hole, and the second signal indicates that the second detection element is aligned with the second latch hole, the latch is in a second state, and the second state is that the latch contacts the lower edge of the first latch hole; when the first signal indicates that the first detection element is aligned with the second latch hole, and the second signal indicates that the second detection element is aligned with the second latch hole, the latch is in a third state, and the third state is that the latch does not contact the first latch hole.

[0008] In another implementation of the present disclosure, the detection assembly includes a first detection element and a second detection element, the first detection element and the second detection element are arranged at intervals along the extension direction of the center line of the ring beam, and the sensing end of the first detection element and the sensing end of the second detection element are both facing the pile leg, the first detection element is located above the second detection element, and along the axial direction of the ring beam, the minimum spacing between the sensing end of the first detection element and the sensing end of the second detection element is equal to the inner diameter of the corresponding pin hole; the indication signal includes a first signal output by the first detection element and a second signal output by the second detection element; when the first signal indicates that the first detection element and the second pin hole are not When the first signal indicates that the first detection element is aligned with the second latch hole, and the second signal indicates that the second detection element is aligned with the second latch hole, the latch is in a first state, and the first state is that the latch is in contact with the upper edge of the first latch hole; when the first signal indicates that the first detection element is aligned with the second latch hole, and the second signal indicates that the second detection element is not aligned with the second latch hole, the latch is in a second state, and the second state is that the latch is in contact with the lower edge of the first latch hole; when the first signal indicates that the first detection element is not aligned with the second latch hole, and the second signal indicates that the second detection element is not aligned with the second latch hole, the latch is in a third state, and the third state is that the latch is not in contact with the first latch hole.

[0009] In yet another implementation of the present disclosure, both the first detection element and the second detection element are proximity switches.

[0010] In another implementation of the present disclosure, the detection assembly also includes a first clamping member and a second clamping member, the first clamping member is threadedly inserted on the fixed bracket, and the first detection element is inserted in the first clamping member; the second clamping member is threadedly inserted on the fixed bracket, and the second detection element is inserted in the second clamping member.

[0011] In yet another implementation of the present disclosure, the first clamping member and the second clamping member are non-metallic structural members.

[0012] In another implementation of the present disclosure, the first clamping member and the second clamping member have the same structure, both of which are annular structures, the first clamping member is threadedly connected to the fixing bracket, and the second clamping member is threadedly connected to the fixing bracket.

[0013] In yet another implementation of the present disclosure, along the insertion and extraction direction of the plug, projections of the first detection element and the second detection element on the pile leg are both located on a line connecting center points of the first plug hole and the second plug hole.

[0014] In another implementation of the present disclosure, the fixed bracket is a rod-shaped structural member, the first end of the fixed bracket is used to connect with the ring beam, and the extension direction of the fixed bracket is the same as the axial direction of the ring beam; the detection component is connected to the second end of the fixed bracket.

[0015] In another implementation of the present disclosure, a lifting system is also provided, which includes pile legs, a fixed ring beam, a dynamic ring beam, a lifting cylinder and a pile frame for fixed connection with an offshore platform, wherein the pile legs are provided with a plurality of rows of pin holes along the axial direction of the pile legs, and the plurality of rows of pin holes are arranged at equal angles along the circumference of the pile legs, one end of the fixed ring beam is connected to the pile frame, a plurality of first pin assemblies matching the pin holes are provided on the fixed ring beam, the other end of the fixed ring beam is hinged to the dynamic ring beam through the lifting cylinder, and a plurality of second pin assemblies matching the pin holes are provided on the dynamic ring beam; the pin lifting system also includes a detection device, which is the detection device described above, and the detection device is connected to one of the fixed ring beam or the dynamic ring beam.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] When the detection device provided in the embodiment of the present disclosure is applied in a latch lifting system, since the detection device includes a fixed bracket and a detection component, the detection component can be installed on the corresponding fixed ring beam or dynamic ring beam through the fixed bracket to detect the status of each latch in the latch hole.

[0018] Furthermore, because the detection component is located on one side of the corresponding latch pin in the axial direction of the ring beam, and the distance between the symmetry axis of the detection component and the center line of the latch pin to be detected is the distance between the first latch pin hole and the second latch pin hole, when the latch pin moves upward in the first latch pin hole and contacts the upper edge of the first latch pin hole, or moves downward and contacts the lower edge of the first latch pin hole, the detection component will move with the latch pin accordingly, so that the positional relationship between the sensing end of the detection component and the second latch pin hole can be judged by the indication signal, thereby determining the state of the latch pin in the first latch pin hole.

[0019] That is to say, the detection device for the latch status provided in the embodiment of the present disclosure can detect the specific status of each latch in real time, thereby avoiding errors caused by judgment based on the operator's experience, thereby improving the detection accuracy of the latch status. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a structural schematic diagram of a latch lifting system provided in an embodiment of the present disclosure;

[0022] Figure 2 yes Figure 1 A top view of

[0023] Figure 3 A schematic diagram of the structure of a detection device for a latch state provided in an embodiment of the present disclosure;

[0024] Figure 4 for Figure 3 The latch in the figure is a schematic diagram of the structure in the first state;

[0025] Figure 5 for Figure 3 The latch in the figure is a schematic diagram of the structure in the second state;

[0026] Figure 6 A schematic diagram of the structure of another device for detecting the state of a latch provided in an embodiment of the present disclosure;

[0027] Figure 7 for Figure 6 The latch in FIG. 1 is a schematic diagram of the structure of the second state.

[0028] The symbols in the figure mean the following:

[0029] 100, pile leg; 110, latch hole; 101, first latch hole; 102, second latch hole; 200, fixed ring beam; 210, first latch; 300, movable ring beam; 310, second latch; 400, lifting cylinder; 500, pile fixing frame; 600, detection device;

[0030] 1. Fix the bracket;

[0031] 2. Detection assembly; 21. First detection element; 22. Second detection element; 23. First clamping member; 24. Second clamping member. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0033] In order to clearly illustrate the detection device for the latch lifting system provided in the embodiment of the present disclosure, the latch lifting system is briefly described again first.

[0034] Figure 1 is a schematic diagram of the structure of the latch lifting system provided by the embodiment of the present disclosure, combined with Figure 1 The hydraulic latch lifting system includes a pile leg 100, a fixed ring beam 200, a movable ring beam 300, a lifting cylinder 400 and a pile frame 500 for being fixedly connected to an offshore platform. A plurality of rows of latch holes 110 are arranged along the axial direction of the pile leg 100 on the pile leg 100, and the plurality of rows of latch holes 110 are arranged at equal angles along the circumference of the pile leg 100. One end of the fixed ring beam 200 is connected to the pile frame 500, and a plurality of first latches 210 matching with the latch holes 110 are arranged on the fixed ring beam 200. The other end of the fixed ring beam 200 is hinged to the movable ring beam 300 through the lifting cylinder 400, and a plurality of second latches 310 matching with the latch holes 110 are arranged on the movable ring beam 300.

[0035] Figure 2 yes Figure 1 A top view of Figure 2 The fixed ring beam 200 is provided with four groups of first latch pins 210 at intervals along its circumferential direction. In the radial direction of the first latch pins 210, when the first latch pins 210 are coaxially inserted into the corresponding latch pin holes 110, the gap between the first latch pins 210 and the corresponding latch pin holes 110 is between 40 and 60 mm.

[0036] The dynamic ring beam 300 is provided with four groups of second latch pins 310 at intervals along its circumference. In the radial direction of the second latch pins 310, when the second latch pins 310 are coaxially inserted into the corresponding latch holes 110, the gap between the second latch pins 310 and the corresponding latch holes 110 is generally between 40 and 60 mm.

[0037] The embodiment of the present disclosure provides a detection device for a latch state, the detection device comprising a fixed bracket 1 and a detection assembly 2. The fixed bracket 1 is used to connect with a ring beam (fixed ring beam 200 or dynamic ring beam 300) of a latch lifting system.

[0038] The detection component 2 is connected to the fixed bracket 1, and the detection component 2 corresponds to the pin on the ring beam one by one. The detection component 2 is used to detect the state of the corresponding pin in the first pin hole 101. In the axial direction of the ring beam, the detection component 2 is located on one side of the corresponding pin, and the sensing end of the detection component 2 faces the pile leg. The detection component 2 is a symmetrical structure.

[0039] When the pin to be detected is located in the first pin hole 101, the detection component 2 is used to output an indication signal based on the positional relationship between the sensing end of the detection component 2 and the second pin hole 102, and the indication signal is used to indicate the state of the pin in the first pin hole 101, and the distance between the first pin hole 101 and the second pin hole 102 is equal to the distance between the symmetry axis of the detection component 2 and the center line of the pin.

[0040] When the detection device provided by the embodiment of the present disclosure is applied in a latch lifting system, since the detection device includes a fixed bracket 1 and a detection component, the detection component 2 can be installed on the corresponding fixed ring beam or dynamic ring beam through the fixed bracket 1 to detect the status of each latch in the latch hole.

[0041] Furthermore, because the detection component 2 is located on one side of the corresponding latch pin in the axial direction of the ring beam, and the distance between the symmetry axis of the detection component 2 and the center line of the latch pin to be detected is the distance between the first latch pin hole 101 and the second latch pin hole 102, when the latch pin moves upward in the first latch pin hole 101 and contacts the upper edge of the first latch pin hole 101, or when the latch pin moves downward and contacts the lower edge of the first latch pin hole 101, the detection component 2 will move with the latch pin accordingly. In this way, the positional relationship between the sensing end of the detection component 2 and the second latch pin hole 102 can be judged by the indication signal, thereby determining the state of the latch pin in the first latch pin hole 101.

[0042] That is to say, the detection device for the latch status provided in the embodiment of the present disclosure can detect the specific status of each latch in real time, thereby avoiding errors caused by judgment based on the operator's experience, thereby improving the detection accuracy of the latch status.

[0043] In addition, in the present application, the distance between the first latch hole 101 and the second latch hole 102 is an integer multiple of the pitch of the latch holes (the pitch of the latch holes is the distance between two adjacent latch holes in the same row of latch holes 110). This can reduce the difficulty of measurement and also facilitate the maintenance and observation of the detection component 2.

[0044] In this embodiment, the detection component 2 is arranged above the pin to be detected, and the first pin hole 101 and the second pin hole 102 are two adjacent pin holes along the axial direction of the ring beam, which can reduce the volume of the detection device.

[0045] Figure 3 A schematic diagram of a detection device for a latch state provided in an embodiment of the present disclosure, combined with Figure 3, optionally, the detection component 2 includes a first detection element 21 and a second detection element 22. The first detection element 21 and the second detection element 22 are arranged at intervals along the extension direction of the center line of the ring beam, and the sensing ends of both the first detection element 21 and the second detection element 22 face the pile leg. The first detection element 21 is located above the second detection element 22, and in the axial direction of the ring beam, the minimum distance between the sensing end of the first detection element 21 and the sensing end of the second detection element 22 (see Figure 3 the distance a therein) is equal to the maximum distance between the upper circumferential wall and the lower circumferential wall of the bolt (see Figure 3 the distance b therein).

[0046] The indication signal includes a first signal output by the first detection element 21 and a second signal output by the second detection element.

[0047] When the first signal indicates that the first detection element 21 is aligned with the second bolt hole and the second signal indicates that the second detection element is not aligned with the second bolt hole, the bolt is in the first state, and the first state is that the bolt contacts the upper edge of the first bolt hole 101.

[0048] When the first signal indicates that the first detection element 21 is not aligned with the second bolt hole 102 and the second signal indicates that the second detection element is aligned with the second bolt hole, the bolt is in the second state, and the second state is that the bolt contacts the lower edge of the first bolt hole 101.

[0049] When the first signal indicates that the first detection element 21 is aligned with the second bolt hole 102 and the second signal indicates that the second detection element is aligned with the second bolt hole 102, the bolt is in the third state, and the third state is that the bolt does not contact the first bolt hole 101.

[0050] In the above implementation, the minimum distance between the sensing ends of the first detection element 21 and the second detection element 22 is equal to the maximum distance between the upper circumferential wall and the lower circumferential wall of the bolt, so that the first detection element 21 can be used as the detection element for the upper circumferential wall of the bolt, and the second detection element 22 can be used as the detection element for the lower circumferential wall of the bolt. Finally, the specific state of the bolt is determined by the first signal or the second indication output by the first detection element 21 and the second detection element 22.

[0051] And the first detection element 21 is arranged above the second detection element 22, so that it can be determined whether the bolt to be detected is in the first state through the first detection element 21, and it can be determined whether the bolt to be detected is in the second state through the second detection element 22.

[0052] The first signal and the second signal mentioned above can respectively represent different information of the corresponding detection elements. For example, the first signal can be used to feedback the on or off state of the first detection element 21, and correspondingly, the second signal can also be used to feedback the on or off state of the second detection element 22.

[0053] Of course, the first signal and the second signal can also be other types of output information. For example, the first signal is a high-level signal or a low-level signal, the second signal is a high-level signal or a low-level signal, and so on, as long as the first signal can indicate different information of the first detection element 21 and the second signal can indicate different information of the second detection element 22.

[0054] In this embodiment, when the sensing end of the first detection element 21 is not aligned with the second latch hole 102, the sensing end of the first detection element 21 can sense the opposite pile leg, and at this time, the first signal output by the first detection element 21 represents that the first detection element 21 is not aligned with the second latch hole 102. When the sensing end of the first detection element 21 is aligned with the second latch hole 102, the sensing end of the first detection element 21 cannot sense the opposite pile leg, and at this time, the first signal output by the first detection element 21 represents that the first detection element 21 is aligned with the second latch hole 102.

[0055] Similarly, when the sensing end of the second detection element 22 is not aligned with the second latch hole 102, the sensing end of the second detection element 22 can sense the opposite pile leg, and at this time, the second signal output by the second detection element 22 represents that the second detection element 22 is not aligned with the second latch hole 102. When the sensing end of the second detection element 22 is aligned with the second latch hole 102, the sensing end of the second detection element 22 cannot sense the opposite pile leg, and at this time, the second signal output by the second detection element 22 represents that the second detection element 22 is aligned with the second latch hole 102.

[0056] Optionally, the first detection element 21 and the second detection element 22 are both proximity switches. The shortest distance from the sensing end of the first detection element 21 to the pile leg is smaller than the operating distance of the first detection element 21. The shortest distance from the sensing end of the second detection element 22 to the pile leg is smaller than the operating distance of the second detection element 22.

[0057] In the above implementation, the first detection element 21 and the second detection element 22 are set as proximity switches, so that whether the sensing ends of the first detection element 21 and the second detection element 22 are aligned with the second pin hole 102 can be determined based on whether the sensing end of the proximity switch is close to the side wall of the pile leg, thereby determining the specific information indicated by the first signal output by the first detection element 21 and the second signal output by the second detection element 22.

[0058] Of course, the proximity switch can be a normally closed or normally open proximity switch. For example, when the first detection element 21 is set as a normally closed proximity switch, when the sensing end of the first detection element 21 senses the opposite object (the side wall of the pile leg), when the distance between the side wall of the pile leg and the sensing end of the first detection element 21 reaches the action distance of the first detection element 21, the first detection element 21 will be actuated. In this way, the first detection element 21 is converted from the original open state to the closed state, that is, the first signal can be the opening information of the first detection element 21, or the closing information of the first detection element 21.

[0059] Similarly, when the second detection element 22 is set as a normally closed proximity switch, the same principle applies.

[0060] If the first detection element 21 or the second detection element 22 is set as a normally open proximity switch, the above is similar and will not be repeated here.

[0061] Figure 4 for Figure 3 The latch in FIG. 1 is a schematic diagram of a structure in the first state. Figure 5 for Figure 3 The latch in FIG. 1 is a schematic diagram of the structure of the second state. Figure 4-5 In this embodiment, when the pin to be detected is in the third state, along the plugging and unplugging direction of the pin, the sensing end of the first detection element 21 and the sensing end of the second detection element 22 are aligned with the second pin hole 102. At this time, the first signal output by the first detection element 21 and the second signal output by the second detection element 22 indicate the same information.

[0062] If the pin to be detected moves up and contacts the upper edge of the first pin hole 101, that is, when the pin changes from the third state to the first state, correspondingly, the first detection element 21 and the second detection element 22 also move up with the pin to be detected. At this time, the first detection element 21 will move up, and when moving along the plugging and unplugging direction of the pin, the sensing end of the first detection element 21 will not be aligned with the second pin hole 102. At this time, the information indicated by the first signal output by the first detection element 21 will change.

[0063] If the pin to be detected moves downward and contacts the lower edge of the first pin hole 101, that is, when the pin changes from the third state to the second state, correspondingly, the first detection element 21 and the second detection element 22 also move downward along with the pin to be detected. At this time, the second detection element 22 will move downward, and when moving along the plugging and unplugging direction of the pin, the sensing end of the second detection element 22 will not be aligned with the second pin hole 102. At this time, the information indicated by the second signal output by the second detection element 22 will change.

[0064] In this embodiment, the alignment means that the projection of the sensing end of the first detection element 21 is located in the second plug hole 102 along the plugging and unplugging direction of the plug. Of course, the misalignment means that the projection of the sensing end of the first detection element 21 is not located in the second plug hole 102 along the plugging and unplugging direction of the plug.

[0065] The arrangement of the first detection element 21 and the second detection element 22 may be other situations. For example, the first detection element 21 is used as the detection element of the lower peripheral wall of the bolt, while the second detection element 22 is used as the detection element of the lower peripheral wall of the bolt.

[0066] Figure 6 A schematic diagram of another latch state detection device provided in an embodiment of the present disclosure, combined with Figure 6 Optionally, in the axial direction of the ring beam, the minimum distance between the sensing end of the first detection element 21 and the sensing end of the second detection element 22 (see Figure 6 The distance d) is equal to the inner diameter of the second pin hole 102 (see Figure 6 When the first signal indicates that the first detection element 21 is not aligned with the second latch hole, and the second signal indicates that the second detection element 22 is aligned with the second latch hole, the latch is in the first state (i.e., the latch contacts the upper edge of the first latch hole). When the first signal indicates that the first detection element 21 is aligned with the second latch hole 102, and the second signal indicates that the second detection element 22 is not aligned with the second latch hole 102, the latch is in the second state (i.e., the latch contacts the lower edge of the first latch hole). When the first signal indicates that the first detection element 21 is not aligned with the second latch hole 102, and the second signal indicates that the second detection element 22 is not aligned with the second latch hole 102, the latch is in the third state (i.e., the latch does not contact the first latch hole).

[0067] In the above implementation, the first detection element 21 and the second detection element 22 are arranged as above, which can further expand the arrangement of the first detection element 21 and the second detection element 22, making the arrangement of the first detection element 21 and the second detection element 22 more flexible.

[0068] In the above situation, when the plug to be detected is in the third state, along the plug insertion and extraction direction of the plug, the sensing ends of the first detection element 21 and the second detection element 22 are not aligned with the second plug hole 102 (see Figure 6 ), at this time, the first signal output by the first detection element 21 and the first signal output by the second detection element 22 indicate the same information.

[0069] If the pin to be detected moves up and contacts the upper edge of the first pin hole 101, that is, when the pin changes from the third state to the first state, correspondingly, the first detection element 21 and the second detection element 22 also move up with the pin to be detected. At this time, the second detection element 22 will move up, and when moving along the plugging and unplugging direction of the pin, the sensing end of the second detection element 22 will be aligned with the second pin hole 102. Correspondingly, the information indicated by the second signal output by the second detection element 22 will change, while the sensing end of the first detection element 21 is still not aligned with the second pin hole 102 at this time, and the information indicated by the first signal output by the first detection element 21 has not changed.

[0070] If the pin to be detected moves downward and contacts the lower edge of the first pin hole 101, that is, when the pin changes from the third state to the second state, the first detection element 21 and the second detection element 22 also move downward along with the pin to be detected. At this time, the first detection element 21 moves downward, and when moving along the direction of plugging and unplugging the pin, the sensing end of the first detection element 21 will be aligned with the second pin hole 102, and correspondingly, the information indicated by the first signal output by the first detection element 21 will change (see Figure 7 ), while the sensing end of the second detection element 22 is still not aligned with the second latch hole 102, and the information indicated by the second signal output by the second detection element 22 has not changed.

[0071] Of course, the arrangement positions of the first detection element 21 and the second detection element 22 are not limited to the above-mentioned forms, as long as the specific state of the bolt can be detected according to the first signal output by the first detection element 21 and the second signal output by the second detection element 22 .

[0072] See again Figure 2 Optionally, along the insertion and extraction direction of the plug, the projections of the first detection element 21 and the second detection element 22 on the pile leg are both located in the direction of the line connecting the center points of the first plug hole 101 and the second plug hole 102.

[0073] In the above implementation, the detection accuracy of the first detection element 21 and the second detection element 22 can be improved, and the detection accuracy can be prevented from being affected by the interference between the first detection element 21 and the second detection element 22 and the inner circumferential wall of the second pin hole 102 .

[0074] Optionally, the detection assembly 2 further includes a first clamping member 23 and a second clamping member 24, wherein the first clamping member 23 is plugged into the fixing bracket 1, and the first detection element 21 is plugged into the first clamping member 23. The second clamping member 24 is plugged into the fixing bracket 1, and the second detection element 22 is plugged into the second clamping member 24.

[0075] In the above implementation, the arrangement of the first clamping member 23 can facilitate the connection of the first detection element 21 to the fixed bracket 1, that is, it can simplify the installation method of the first detection element 21 on the fixed bracket 1. Similarly, the arrangement of the second clamping member 24 can facilitate the connection of the second detection element 22 to the fixed bracket 1, that is, it can simplify the installation method of the second detection element 22 on the fixed bracket 1.

[0076] In this embodiment, the first clamping member 23 and the second clamping member 24 are both structural members made of non-metallic materials, which will not interfere with the detection of the first detection element 21 and the second detection element 22 and can also be easily installed on the fixing bracket 1.

[0077] Exemplarily, the first clamping member 23 and the second clamping member 24 have the same structure, both of which are annular structural members, the first clamping member 23 is threadedly connected to the fixing bracket 1, and the second clamping member 24 is threadedly connected to the fixing bracket 1. In this way, the first detection element 21 and the second detection element 22 can be quickly connected to the fixing bracket 1.

[0078] See again Figure 3 Optionally, the fixed bracket 1 is a rod-shaped structural member, the first end of the fixed bracket 1 is used to connect with the fixed ring beam or the dynamic ring beam, and the extension direction of the fixed bracket 1 is the same as the axial direction of the pile leg. The detection component 2 is connected to the second end of the fixed bracket 1.

[0079] In the above implementation, the fixed bracket 1 is configured as a rod-shaped structural member, which can facilitate the connection between the fixed bracket 1 and the fixed ring beam or the dynamic ring beam, and also facilitate the arrangement of the detection component 2 near the second pin hole 102 .

[0080] The disclosed embodiment also provides a lifting system, which includes the aforementioned latch lifting system and a detection device, and the detection device is the above detection device.

[0081] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A device for detecting a latch state, It is characterized in that The detection device comprises a fixed bracket (1) and a plurality of detection components (2); The fixed bracket (1) is used to be connected to the ring beam of the latch lifting system; The detection component (2) is connected to the fixed bracket (1), and the detection component (2) corresponds one-to-one with the latch pin on the ring beam; In the axial direction of the ring beam, the detection component (2) is located on one side of the corresponding latch, and the sensing end of the detection component (2) faces the pile leg, and the detection component (2) is a symmetrical structure; When the latch pin to be detected is located in the first latch pin hole (101), the detection component (2) is used to output an indication signal according to the positional relationship between the sensing end of the detection component (2) and the second latch pin hole (102), wherein the indication signal is used to indicate the state of the latch pin in the first latch pin hole (101), and the distance between the first latch pin hole (101) and the second latch pin hole (102) is equal to the distance between the symmetry axis of the detection component (2) and the center line of the latch pin.

2. The detection device according to claim 1, It is characterized in that The detection assembly (2) comprises a first detection element (21) and a second detection element (22), the first detection element (21) and the second detection element (22) are arranged at intervals along the extension direction of the center line of the ring beam, and the sensing end of the first detection element (21) and the sensing end of the second detection element (22) are both facing the pile leg, the first detection element (21) is located above the second detection element (22), and in the axial direction of the ring beam, the minimum spacing between the sensing end of the first detection element (21) and the sensing end of the second detection element (22) is equal to the maximum distance between the upper peripheral wall and the lower peripheral wall of the bolt; The indication signal comprises a first signal output by a first detection element (21) and a second signal output by a second detection element; When the first signal indicates that the first detection element (21) is aligned with the second latch hole (102), and the second signal indicates that the second detection element (22) is not aligned with the second latch hole (102), the latch is in a first state, and the first state is that the latch is in contact with an upper edge of the first latch hole (101); When the first signal indicates that the first detection element (21) is not aligned with the second latch hole (102), and the second signal indicates that the second detection element (22) is aligned with the second latch hole (102), the latch is in a second state, and the second state is that the latch is in contact with the lower edge of the first latch hole (101); When the first signal indicates that the first detection element (21) is aligned with the second latch hole (102), and the second signal indicates that the second detection element is aligned with the second latch hole (102), the latch is in a third state, and the third state is that the latch is not in contact with the first latch hole (101).

3. The detection device according to claim 1, It is characterized in that The detection assembly (2) comprises a first detection element (21) and a second detection element (22), the first detection element (21) and the second detection element (22) are arranged at intervals along the extension direction of the center line of the ring beam, and the sensing end of the first detection element (21) and the sensing end of the second detection element (22) are both facing the pile leg, the first detection element (21) is located above the second detection element (22), and along the axis direction of the ring beam, the minimum spacing between the sensing end of the first detection element (21) and the sensing end of the second detection element (22) is equal to the inner diameter of the corresponding pin hole; The indication signal comprises a first signal output by a first detection element (21) and a second signal output by a second detection element; When the first signal indicates that the first detection element (21) is not aligned with the second latch hole (102), and the second signal indicates that the second detection element (22) is aligned with the second latch hole (102), the latch is in a first state, and the first state is that the latch is in contact with an upper edge of the first latch hole (101); When the first signal indicates that the first detection element (21) is aligned with the second latch hole (102), and the second signal indicates that the second detection element (22) is not aligned with the second latch hole (102), the latch is in a second state, and the second state is that the latch is in contact with the lower edge of the first latch hole (101); When the first signal indicates that the first detection element (21) is not aligned with the second latch hole (102), and the second signal indicates that the second detection element (22) is not aligned with the second latch hole (102), the latch is in a third state, and the third state is that the latch is not in contact with the first latch hole (101).

4. The detection device according to claim 2 or 3, It is characterized in that The first detection element (21) and the second detection element (22) are both proximity switches.

5. The detection device according to claim 2 or 3, It is characterized in that The detection assembly (2) further comprises a first clamping member (23) and a second clamping member (24). The first clamping member (23) is inserted into the fixing bracket (1), and the first detection element (21) is inserted into the first clamping member (23); The second clamping piece (24) is plugged into the fixing bracket (1), and the second detection element (22) is plugged into the second clamping piece (24).

6. The detection device according to claim 5, It is characterized in that The first clamping member (23) and the second clamping member (24) are non-metallic structural members.

7. The detection device according to claim 5, It is characterized in that The first clamping member (23) and the second clamping member (24) have the same structure and are both annular structural members; the first clamping member (23) is threadedly connected to the fixing bracket (1), and the second clamping member (24) is threadedly connected to the fixing bracket (1).

8. The detection device according to claim 2 or 3, It is characterized in that Along the plugging and unplugging direction of the plug, the projections of the first detection element (21) and the second detection element (22) on the pile leg are both located on the line connecting the center points of the first plug hole (101) and the second plug hole (102).

9. The detection device according to claim 1, It is characterized in that The fixing bracket (1) is a rod-shaped structural member, the first end of the fixing bracket (1) is used to be connected to the ring beam, and the extension direction of the fixing bracket (1) is the same as the axial direction of the ring beam; The detection component (2) is connected to the second end of the fixing bracket (1).

10. A lifting system, It is characterized in that The lifting system comprises a pile leg (100), a fixed ring beam (200), a movable ring beam (300), a lifting cylinder (400) and a pile frame (500) for being fixedly connected to an offshore platform. The pile leg (100) is provided with a plurality of rows of latch holes (110) along the axial direction of the pile leg (100). The plurality of rows of latch holes (110) are arranged at equal angles along the circumference of the pile leg (100). One end of the fixed ring beam (200) is connected to the pile frame (500). The fixed ring beam (200) is provided with a plurality of first latches (210) matched with the latch holes (110). The other end of the fixed ring beam (200) is hinged to the movable ring beam (300) through the lifting cylinder (400). The movable ring beam (300) is provided with a plurality of second latches (310) matched with the latch holes (110). The lifting system further comprises a detection device (600), wherein the detection device (600) is the detection device (600) described in any one of claims 1 to 9, and the detection device (600) is connected to one of the fixed ring beam (200) or the movable ring beam (300).

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