Buoy A frame
By designing a float A frame containing a balance bracket, drawstring, winch, hoist pulley and guide pulley, the problem of the float swinging greatly when the ship shakes and collides with the gantry, and the stability and safety of the float are improved.
Patent Information
- Application Number
- CN202421781711.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Existing float retracting and placement devices can easily cause the float to swing greatly when the ship shakes, increasing the risk of collision with the gantry.
A float A frame is designed, which adopts components such as balance brackets, draw ropes, winch, hoist pulleys and guide pulleys. By balancing the swing of the bracket and sliding of the lifting pulleys, the swing range of the float is reduced, and the stability of the float is improved through the coordination of the guide pulleys and draw ropes.
It effectively reduces the swing amplitude and time of the float, reduces the risk of collision with the gantry, and improves the stability of the float during the collection and release process.
Smart Images
Figure CN223014852U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of marine operation equipment, and particularly relates to a buoy A-frame. Background Technique
[0002] The buoy is heavy, and its retraction and deployment operations are carried out on the ship, usually with the help of a retraction and deployment device. In the related art, the retraction and deployment device of the buoy suspends the buoy through a cable. During the retraction and deployment process, the buoy is prone to swing greatly due to the shaking of the ship, and thus there is a greater risk of colliding with the gantry.
[0003] It should be noted that the information disclosed in the above background technique section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] The utility model provides a buoy A-frame, and the technical problem to be solved at least is: how to reduce the swinging amplitude of the buoy and reduce the risk of collision with the gantry.
[0006] (2) Technical Solutions
[0007] To solve the above technical problems, the utility model provides the following technical solutions:
[0008] A buoy A-frame, comprising:
[0009] A gantry;
[0010] A balance bracket, the balance bracket includes a vertical rod and a cross rod, one end of the vertical rod is rotatably connected to the middle of the cross rod around a first axis, and the other end is rotatably connected to the middle of the gantry around a second axis, the first axis is perpendicular to the second axis and parallel to the gantry;
[0011] Two stay ropes, which are respectively connected to both ends of the cross rod;
[0012] A winch, which is used to synchronously retract and release the two stay ropes;
[0013] At least two hoisting pulleys, which are symmetrically arranged on both sides of the balance bracket and are respectively connected to the stay ropes on the corresponding side, and the hoisting pulleys are used to connect the buoy;
[0014] At least two guiding pulleys are arranged on the gantry, the guiding pulleys are symmetrically arranged on both sides of the balance bracket and are respectively connected to the stay ropes on the corresponding side;
[0015] Wherein, in the initial state, the connection points of the pulling rope with the hoisting pulley, the guiding pulley and the cross bar are located in the same vertical plane, and the vertical plane is parallel to the second axis.
[0016] In some embodiments, the balance bracket further includes two hanging rings, each of which is respectively hinged at both ends of the cross bar and connected to one of the pulling ropes.
[0017] In some embodiments, the guiding pulley is rotatably connected to the gantry and can swing relative to the gantry about a third axis, and the third axis is parallel to the second axis.
[0018] In some embodiments, the guiding pulley includes a guiding bracket and a first pulley rotatably connected to the guiding bracket; the guiding bracket is rotatably connected to the gantry and can swing about the third axis, and the guiding bracket is provided with a guiding hole on the side close to the leg, and the guiding hole extends along the direction of the third axis; the pulling rope is connected to the first pulley and passes through the guiding hole and then is connected to the winch.
[0019] In some embodiments, the buoy A frame further includes a fixed pulley, and the fixed pulley includes a fixed frame and a second pulley rotatably connected to the fixed frame; the fixed frame is fixedly connected to the gantry, and the second pulley is located between the winch and the guiding pulley and is connected to the pulling rope, so that the part of the pulling rope connected to the winch is perpendicular to the part of the pulling rope connected to the guiding pulley.
[0020] In some embodiments, the hoisting pulley includes a first corner pulley, a connecting member and a second corner pulley. The first corner pulley is connected to the upper end of the connecting member and is connected to the pulling rope; the second corner pulley includes a pulley bracket, a pulley body and a movable plate. The pulley bracket is connected to the lower end of the connecting member, the pulley body is rotatably connected to the pulley bracket, one end of the movable plate is rotatably connected to the pulley bracket, and the other end is detachably connected to the connecting member. The pulley body is connected to the buoy through a suspension rope; when the movable plate is connected to the connecting member, a limiting groove for restricting the suspension rope from detaching along the axial direction of the pulley body is formed among the pulley bracket, the pulley body and the movable plate. When the movable plate is separated from the connecting member, it can rotate around the pulley bracket to open the limiting groove for the suspension rope to be put in.
[0021] In some embodiments, both ends of each suspension rope are respectively connected to two hanging points of the buoy, and the middle part is connected to the pulley body, so that the hoisting pulley is located on the perpendicular bisector of the connection line of the two hanging points, thus forming an isosceles triangle structure; wherein, the suspension rope serves as the waist of the isosceles triangle, and the plane where the isosceles triangle is located is perpendicular to the vertical plane where the pulling rope is located.
[0022] In some embodiments, there are two lifting pulleys, and the line connecting the two lifting pulleys and the two lifting points of the buoy forms an inverted isosceles trapezoid from the main viewing angle. The lifting rope serves as the waist of the isosceles trapezoid, connecting the lifting pulleys and the lifting points of the buoy.
[0023] (III) Beneficial effects
[0024] Compared with the prior art, the buoy A frame provided by the utility model has the following beneficial effects:
[0025] When the buoy A frame is working, the buoy is connected by a lifting pulley. During the process of retracting and releasing the buoy, the buoy will swing toward the two sides of the gantry due to the shaking of the ship. Since the lifting pulley is connected to the pull rope, the lifting pulley can slide on the pull rope. According to the principle of minimum potential energy, the buoy will tend to return to a low position under the action of gravity even if the ship shakes, thereby reducing the swing amplitude of the buoy and shortening the swing time of the buoy. The connection points of the pull rope, the lifting pulley, the guide pulley and the cross bar are located in the same vertical plane, that is, the pull ropes between the connection points are located in the same vertical plane, and the vertical plane is parallel to the first axis of the swing of the balance bracket around the gantry, so that the pull rope produces resistance to the lifting pulley and the buoy to resist the swing of the buoy in the direction of the outrigger. , which can effectively reduce the swing amplitude of the buoy; during the buoy retraction and deployment process, the balance bracket can adaptively swing around the first axis and the second axis through the vertical rod and the cross rod, reduce the tension rope stress, and improve the stability of the device operation; at the same time, the buoy is connected to at least two lifting pulleys, which can effectively limit the freedom of rotation of the buoy, thereby improving the stability of the buoy during the retraction and deployment process; compared with the traditional single-point suspension method, the buoy retraction and deployment system can improve the stress condition of the gantry. Under the same load, the maximum bending moment of the gantry is greatly reduced, and the requirements for the cross-sectional size and structural strength of the beam are reduced; the device as a whole can be set to a left-right symmetrical structure, so that the buoy is evenly stressed, which is beneficial to improving the stability of the buoy.
[0026] It can be seen that the buoy retraction and release system of the utility model can reduce the swing amplitude of the buoy, improve the stability of the buoy, and reduce the risk of collision between the buoy and the gantry during the retraction and release process. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a three-dimensional diagram of the buoy A frame in the embodiment.
[0028] Figure 2 It is the front view of the buoy A frame in the embodiment.
[0029] Figure 3 for Figure 1 Schematic diagram of area A in center.
[0030] Figure 4 for Figure 1 Schematic diagram of region B.
[0031] Figure 5 The front view of the hoisting pulley in the closed state in the embodiment.
[0032] Figure 6 The perspective view of the hoisting pulley in the closed state in the embodiment.
[0033] Reference numerals:
[0034] Gantry 1, balance bracket 2, pulling rope 3, winch 4, hoisting pulley 5, guiding pulley 6, buoy 7, fixed pulley 8, lifting rope 9, vertical rod 21, cross bar 22, lifting ring 23, first turning pulley 51, connecting piece 52, second turning pulley 53, guiding bracket 61, first pulley 62, fixing bracket 81, second pulley 82, first axis 101, second axis 102, third axis 103, pulley bracket 501, pulley body 502, movable plate 503, limiting groove 504. Detailed implementation manners
[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.
[0036] During the retraction and deployment of the existing buoy, it is prone to swing significantly due to the shaking of the ship, and thus it is likely to collide with the gantry, affecting the operation safety.
[0037] To solve the above technical problems, this embodiment provides a buoy A-frame. Please refer to Figures 1 to 3 as shown in Figure 1 The perspective view of the buoy A-frame in the embodiment, Figure 2 The front view of the buoy A-frame in the embodiment, Figure 3 is Figure 1 the schematic diagram of area A in
[0038] A buoy A-frame in this embodiment includes: a gantry 1, a balance bracket 2, a pulling rope 3, a winch 4, a hoisting pulley 5 and a guiding pulley 6.
[0039] As Figure 1 and Figure 3 shown, the balance bracket 2 includes a vertical rod 21 and a cross bar 22. One end of the vertical rod 21 is rotatably connected to the middle of the cross bar 22 around the first axis 101, and the other end is rotatably connected to the middle of the gantry 1 around the second axis 202. The first axis 101 is perpendicular to the second axis 202 and parallel to the gantry 1. During the retraction and deployment of the buoy 7, the balance bracket 2 can swing around the second axis 202 through the vertical rod 21, that is, swing back and forth around the gantry 1, and can also rotate around the first axis 101 through the cross bar 22, so as to adapt to the shaking movement of the buoy 7.
[0040] As Figure 1 andFigure 2 As shown, there are two draw ropes 3, which are respectively connected to both ends of the cross bar 22; the other ends of the draw ropes 3 are connected to the winch 4, and the winch 4 is used to synchronously wind and unwind the two draw ropes 3.
[0041] As Figure 2 shown, there are at least two hoisting pulleys 5, which are symmetrically arranged on both sides of the balance bracket 2 and are respectively connected to the draw ropes 3 on the corresponding side. The hoisting pulleys 5 are used to connect the buoy 7.
[0042] As Figure 2 shown, there are at least two guiding pulleys 6 arranged on the gantry 1, which are used to guide the draw ropes 3. The guiding pulleys 6 are symmetrically arranged on both sides of the balance bracket 2 and are respectively connected to the draw ropes 3 on the corresponding side.
[0043] Among them, as Figure 2 shown, in the initial state, the connection points of the draw ropes 3 with the hoisting pulleys 5, the guiding pulleys 6 and the cross bar 22 are located in the same vertical plane, and the vertical plane is parallel to the second axis 102.
[0044] When the buoy A frame of the above technical solution works, the buoy 7 is connected through the hoisting pulley 5. During the winding and unwinding process of the buoy 7, due to the shaking of the ship, the buoy 7 will swing towards both sides of the gantry 1. Since the hoisting pulley 5 is connected to the draw rope 3, the hoisting pulley 5 can slide on the draw rope 3. According to the principle of minimum potential energy, under the action of gravity, the buoy 7 has a tendency to return to the lower position even when the ship shakes, thereby reducing the swing amplitude of the buoy 7 and shortening the swing time of the buoy 7; and the connection points of the draw rope 3 with the hoisting pulley 5, the guiding pulley 6 and the cross bar 22 are located in the same vertical plane, that is, the draw ropes 3 between the connection points are located in the same vertical plane, and the vertical plane is parallel to the first axis 101 around which the balance bracket 2 swings relative to the gantry 1, so that the draw rope 3 generates a resistance against the swing of the buoy 7 towards the leg direction on the hoisting pulley 5 and the buoy 7, which can effectively reduce the swing amplitude of the buoy 7; during the winding and unwinding process of the buoy 7, the balance bracket 2 can swing adaptively around the first axis 101 and the second axis 202 through the vertical rod 21 and the cross bar 22, reducing the stress of the draw rope 3 and improving the stability of the device operation; at the same time, the buoy 7 is connected by at least two hoisting pulleys 5, so that the degree of freedom of rotation of the buoy 7 can be effectively restricted, and further improve the stability of the buoy 7 during the winding and unwinding process; compared with the traditional single-point suspension method, the buoy 7 winding and unwinding system can improve the stress condition of the gantry 1. Under the same load, the maximum bending moment of the gantry 1 is greatly reduced, and the requirements for the cross-sectional size and structural strength of the cross beam are reduced.
[0045] It can be seen that the buoy 7 winding and unwinding system of the above technical solution can reduce the swing amplitude of the buoy 7, improve the stability of the buoy 7, reduce the risk of collision between the buoy 7 and the gantry 1 during the winding and unwinding process, and has the advantage of stable structure.
[0046] It can be understood that the hoisting pulley 5 can be arranged between the balance bracket 2 and the guiding pulley 6, or can be arranged between the guiding pulleys 6 on the corresponding side. When it is between the guiding pulleys 6, its quantity can be increased according to the increase of the guiding pulleys 6.
[0047] In one implementation of the above-mentioned pulling rope 3 connected to both ends of the cross bar 22, refer to Figure 1 and Figure 3 As shown, the balance bracket 2 further includes lifting rings 23. The number of the lifting rings 23 is two, and they are respectively hinged to both ends of the cross bar 22. The lifting rings 23 are connected to the pulling rope 3.
[0048] Exemplarily, refer to Figure 3 As shown, the lifting ring 23 is hinged to the cross bar 22 through a pin shaft, and the pin shaft is parallel to the first axis 101.
[0049] Exemplarily, refer to Figure 3 As shown, connection lugs are welded on the gantry 1, and the vertical rod 21 is connected to the connection lugs through a pin shaft, so that it can rotate around the pin shaft.
[0050] Exemplarily, refer to Figure 3 As shown, the pulling rope 3 is connected to the lifting ring 23 through a knot, so that it can move around the lifting ring 23 but cannot break away from the lifting ring 23.
[0051] In one implementation of the above-mentioned guiding pulley 6 arranged on the gantry 1, refer to Figure 1 and Figure 4 As shown, Figure 4 is Figure 1 a schematic diagram of area B in . The guiding pulley 6 is rotatably connected to the gantry 1 and can swing relative to the gantry 1 around the third axis 103. The third axis 103 is parallel to the second axis 102. With such an arrangement, the guiding pulley 6 can also adapt to the swing of the buoy 7 during the retraction and release processes and swing back and forth around the gantry 1, thereby reducing the stress and wear between the pulling rope 3 and the guiding pulley 6.
[0052] In one implementation of the above-mentioned guiding pulley 6, refer to Figure 4 As shown, the guiding pulley 6 includes a guiding bracket 61 and a first pulley 62. The first pulley 62 is rotatably connected to the guiding bracket 61; the guiding bracket 61 is rotatably connected to the gantry 1 and can swing around the third axis 103. The guiding bracket 61 is provided with a guiding hole 63 on the side close to the leg. The guiding hole 63 extends along the direction of the third axis 103; the pulling rope 3 is connected to the first pulley 62 and passes through the guiding hole 63 and then is connected to the winch 4. Among them, the guiding hole 63 can both guide the pulling rope 3 and play a role in preventing the pulling rope 3 from breaking away.
[0053] Exemplarily, refer to Figure 4As shown, a connecting ear is welded on the gantry 1, and the guiding bracket 61 is connected to the connecting ear through a shaft member, so that it can rotate relative to the gantry 1 around the shaft member.
[0054] In order to make the pulling rope 3 move more smoothly between the guiding pulley 6 and the winch 4, refer to Figure 1 and Figure 2 As shown, the buoy A frame further includes a fixed pulley 8. The fixed pulley 8 includes a fixed frame 81 and a second pulley 82 rotatably connected to the fixed frame 81. The fixed frame 81 is fixedly connected to the gantry 1, and the second pulley 82 is located between the winch 4 and the guiding pulley 6 and is connected to the pulling rope 3, so that the part of the pulling rope 3 connected to the winch 4 and the part of the pulling rope 3 connected to the guiding pulley 6 are perpendicular to each other, that is, the pulling rope 3 can be connected to the winch 4 and the guiding pulley 6 in a preset direction.
[0055] In one embodiment of the above-mentioned hoisting pulley 5 connecting the pulling rope 3 and the lifting point of the buoy 7, refer to Figure 5 and Figure 6 As shown, Figure 5 is the front view of the hoisting pulley in the closed state in the embodiment, Figure 6 is the three-dimensional view of the hoisting pulley in the closed state in the embodiment. The hoisting pulley 5 includes a first corner pulley 51, a connecting member 52 and a second corner pulley 53. The first corner pulley 51 is connected to the upper end of the connecting member 52 and is connected to the pulling rope 3. The second corner pulley 53 includes a pulley bracket 501, a pulley body 502 and a movable plate 503. The pulley bracket 501 is connected to the lower end of the connecting member 52, the pulley body 502 is rotatably connected to the pulley bracket 501, one end of the movable plate 503 is rotatably connected to the pulley bracket 501, and the other end is detachably connected to the connecting member 52. The pulley body 502 is connected to the buoy 7 through a suspension rope 9. When the movable plate 503 is connected to the connecting member 52, a limiting groove 504 for restricting the suspension rope 9 from disengaging along the axial direction of the pulley body 502 is formed between the pulley bracket 501, the pulley body 502 and the movable plate 503. When the movable plate 503 is separated from the connecting member 52, it can rotate around the pulley bracket 501 to open the limiting groove 504 for the suspension rope 9 to be put in, thereby realizing the function of side cable laying of the second corner pulley 53, solving the problem that the existing pulley can only thread the cable along the groove direction, resulting in inconvenient operation, and having the advantages of convenient operation and high cable laying efficiency.
[0056] Exemplarily, refer to Figure 6 As shown, the pulley bracket 501 is fixedly connected to the lower end of the connecting member 52 by bolts.
[0057] Exemplarily, refer to Figure 6 As shown, the movable plate 503 is detachably fixedly connected to the connecting member 502 by bolts.
[0058] Exemplarily, refer to Figure 6As shown, the pulley body 502 and the movable plate 503 are connected to the pulley bracket 501 by a rotating shaft.
[0059] Further, referring to Figure 1 and Figure 2 As shown, both ends of each lifting rope 9 are respectively connected to two suspension points of the buoy 7, and the middle part is connected to the pulley body 502, so that the lifting pulley 5 is located on the perpendicular bisector of the line connecting the two suspension points, thus forming an isosceles triangle structure; wherein, the lifting rope 9 serves as the waist of the isosceles triangle, and the plane where the isosceles triangle is located is perpendicular to the vertical plane where the pulling rope 3 is located. In this way, the risk of the second cable being entangled with each other when the buoy 7 twists can be reduced, and the stability and firmness of the connection between the lifting pulley 5 and the buoy 7 through the lifting rope 9 can be improved.
[0060] Further, referring to Figure 1 and Figure 2 As shown, the number of lifting pulleys 5 is two. The connection lines between the two lifting pulleys 5 and the two suspension points of the buoy 7 form an inverted isosceles trapezoid from the front view angle. The lifting rope 9 serves as the waist of the isosceles trapezoid and connects the suspension points of the lifting pulley 5 and the buoy 7. In this way, the effect of the pulling rope 3 preventing the buoy 7 from rotating is improved.
[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A buoy A frame, characterized in that: include: Door frame; A balancing bracket, the balancing bracket comprising a vertical rod and a horizontal rod, one end of the vertical rod is rotatably connected to the middle part of the horizontal rod around a first axis, and the other end is rotatably connected to the middle part of the door frame around a second axis, the first axis is perpendicular to the second axis and parallel to the door frame; Two pull ropes are connected to two ends of the crossbar respectively; A winch, the winch is used to synchronously retract and release two pull ropes; There are at least two lifting pulleys, which are symmetrically arranged on both sides of the balancing bracket and are respectively connected to the pull ropes on the corresponding sides. The lifting pulleys are used to connect the buoy; At least two guide pulleys are provided on the gantry, and the guide pulleys are symmetrically arranged on both sides of the balance bracket and are respectively connected to the pull ropes on the corresponding side; Wherein, in the initial state, the connection points of the pull rope and the hoisting pulley, the guide pulley and the cross bar are located in the same vertical plane, and the vertical plane is parallel to the second axis.
2. The buoy A frame according to claim 1, characterized in that: The balancing support further comprises two lifting rings, each of which is hinged at two ends of the crossbar and connected to one of the pull ropes.
3. The buoy A frame according to claim 1, characterized in that: The guide pulley is rotatably connected to the portal frame and can swing relative to the portal frame around a third axis, and the third axis is parallel to the second axis.
4. The buoy A frame according to claim 3, characterized in that: The guide pulley comprises a guide bracket and a first pulley rotatably connected to the guide bracket; The guide bracket is rotatably connected to the door frame and can swing around the third axis. The guide bracket is provided with a guide hole on a side close to the support leg, and the guide hole extends along the direction of the third axis. The pull rope is connected to the first pulley and is connected to the winch after passing through the guide hole.
5. The buoy A frame according to claim 1 or 4, characterized in that: The buoy A frame further comprises a fixed pulley, and the fixed pulley comprises a fixed frame, and a second pulley rotatably connected to the fixed frame; The fixing frame is fixedly connected to the portal frame, and the second pulley is located between the winch and the guide pulley and is connected to the pull rope so that the portion of the pull rope connected to the winch is perpendicular to the portion of the pull rope connected to the guide pulley.
6. The buoy A frame according to claim 1, characterized in that: The hoisting pulley comprises a first angle pulley, a connecting member and a second angle pulley, wherein the first angle pulley is connected to the upper end of the connecting member and is connected to the pull rope; The second corner pulley comprises a pulley bracket, a pulley body and a movable plate, the pulley bracket is connected to the lower end of the connecting member, the pulley body is rotatably connected to the pulley bracket, one end of the movable plate is rotatably connected to the pulley bracket, and the other end is detachably connected to the connecting member, and the pulley body is connected to the buoy through a suspension rope; When the movable plate is connected to the connecting piece, a limiting groove is formed between the pulley bracket, the pulley body and the movable plate to limit the sling rope from being separated along the axial direction of the pulley body. When the movable plate is separated from the connecting piece, it can rotate around the pulley bracket to open the limiting groove for the sling rope to be inserted.
7. The buoy A frame according to claim 6, characterized in that: The two ends of each of the lifting ropes are respectively connected to the two lifting points of the buoy, and the middle part is connected to the pulley body, so that the lifting pulley is located on the perpendicular bisector of the line connecting the two lifting points, thereby forming an isosceles triangle structure; wherein the lifting rope serves as the waist of the isosceles triangle, and the plane where the isosceles triangle is located is perpendicular to the vertical plane where the pull rope is located.
8. The buoy A frame according to claim 6, characterized in that: There are two lifting pulleys, and the line connecting the two lifting pulleys and the two lifting points of the buoy forms an inverted isosceles trapezoid from the main viewing angle. The lifting rope serves as the waist of the isosceles trapezoid, connecting the lifting pulleys and the lifting points of the buoy.