Marine elevator traveling cable protection device

Abstract

The invention relates to the technical field of elevator manufacturing, in particular to a marine elevator traveling cable protection device. The marine elevator traveling cable protection device comprises a back plate, a drag chain and a connecting assembly. The back plate is arranged in the hoistway in the lifting direction of the lift car. The drag chain is attached to the back plate, the drag chain is provided with a first side attached to the back plate and a second side away from the back plate in the first direction, the first side is provided with a magnetic attraction piece used for attracting the back plate, and the first direction is the chain width direction of the drag chain; the connecting assembly is connected between the moving end of the drag chain and the lift car, and the connecting assembly is arranged to allow the lift car to rotate relative to the drag chain and move in the first direction. The elevator traveling cable protection device can achieve protection of elevator traveling cables with different lifting heights, and meanwhile can reduce the installation requirement for an elevator car.

Description

Technical Field

[0001] The present application relates to the technical field of elevator manufacturing, and in particular to a traveling cable protection device for a marine elevator. Background Art

[0002] During the operation of the ship elevator, the accompanying cable will shake under the action of airflow and waves. When the shaking amplitude is large, the accompanying cable may make unexpected contact with the static structure in the shaft, causing the outer sheath of the cable to wear, the insulation layer to be damaged, and even cause electrical faults such as short circuit and open circuit. In severe cases, it may cause system failure or safety accidents. The traditional solution is to set a tensioning device in the shaft and use the tensioning device to put the accompanying cable in a critical tension state to limit the shaking of the cable. However, this method may cause excessive tension, thereby reducing the service life of the accompanying cable, and in severe cases, it may cause damage to it.

[0003] To this end, some manufacturers choose to install a drag chain between the car and the elevator control cabinet, and use the drag chain to wrap the accompanying cable. When the car moves, the drag chain can freely expand and bend, which not only protects the accompanying cable, but also does not cause the accompanying cable to be tensioned. However, the drag chain is prone to shaking when it is long, so the drag chain is usually only used for elevators with a small lifting height. In addition, the expansion and bending direction of the drag chain is fixed, which requires that the car cannot deviate from the drag chain or rotate during the lifting process, which places high requirements on the installation of the car. Summary of the invention

[0004] The embodiments of the present application at least provide a marine elevator traveling cable protection device, which can protect the elevator traveling cables at different lifting heights and reduce the installation requirements for the car.

[0005] In a first aspect, an embodiment of the present application provides a marine elevator accompanying cable protection device, the device comprising: a back plate, a drag chain and a connection assembly; The back plate is arranged in the hoistway along the lifting direction of the car; The drag chain is arranged in close contact with the back plate, and the drag chain has a first side in close contact with the back plate and a second side away from the back plate along a first direction, and the first side is provided with a magnetic attraction member for adsorbing the back plate; The connecting component is connected between the moving end of the drag chain and the car, and the connecting component is configured to allow the car to rotate relative to the drag chain and move along the first direction.

[0006] In an optional embodiment, the magnetic attraction component is provided on a side of each link of the drag chain facing the back plate.

[0007] In an optional embodiment, the first direction is the chain width direction of the drag chain.

[0008] In an optional embodiment, the connection assembly includes a first connection member, a second connection member and a third connection member; The first connecting member is arranged at the moving end of the drag chain; The second connecting member is arranged on the car; The third connecting member has a first connecting portion for connecting to the first connecting member and a second connecting portion for connecting to the second connecting member, one of the first connecting portion and the second connecting portion is configured to allow the car to move along the first direction, and the other is configured to allow the car to rotate relative to the drag chain.

[0009] In an optional embodiment, the first connecting portion is sleeved on the first connecting member and can move relative to the first connecting member along the first direction, and the second connecting portion and the second connecting member are connected via a joint ball bearing.

[0010] In an optional embodiment, a limiting member is provided between the first connecting portion and the first connecting member, and the limiting member is used to limit the first connecting portion from being separated from the first connecting member.

[0011] In an optional embodiment, an elastic member is provided between the first connecting portion and the first connecting member, and the elastic member is used to apply pressure to the first connecting member so that the first connecting member tends to approach the back plate.

[0012] In an optional implementation, the third connecting member is a straight rod structure.

[0013] In an optional embodiment, the device further comprises: a protective cover, which is arranged on the back plate and forms a protective space with the back plate for accommodating the drag chain.

[0014] In an optional embodiment, a through hole is provided on the side of the shield, and the moving end of the drag chain passes through the through hole to connect to the connecting assembly.

[0015] In a second aspect, an embodiment of the present application further provides a ship elevator, comprising the ship elevator accompanying cable protection device as described in any one of the first aspects.

[0016] The above technical solution of the present application has the following beneficial technical effects: 1. In the marine elevator traveling cable protection device of the embodiment of the present application, the second side of the drag chain can be adsorbed on the surface of the back plate by a magnetic suction part, so as to limit the drag chain and prevent the drag chain from shaking due to its long length, causing damage to the drag chain and surrounding equipment, so that the device can be used to protect the traveling cables of elevators with different lifting heights.

[0017] 2. In the marine elevator accompanying cable protection device of the embodiment of the present application, the connecting component can realize a flexible connection between the car and the moving end of the drag chain. When the distance between the car and the drag chain changes or rotates during the lifting process, the connecting component can allow the car to rotate relative to the drag chain and move along the first direction. This can avoid the separation of the drag chain and the back plate due to changes in the position and angle of the car, which is conducive to reducing the installation requirements for the car.

[0018] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solutions of the present application. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic structural diagram of a traveling cable protection device for a marine elevator provided in an embodiment of the present application is shown; Figure 2 Shows Figure 1 The internal schematic diagram of the provided marine elevator traveling cable protection device; Figure 3 Shows Figure 1 A top view of the provided marine elevator traveling cable protection device; In the figure: 100, accompanying cable; 101, fixed end; 102, mobile end; 10, drag chain; 11, chain link; 12, fixed bracket; 13, mobile bracket; 14, magnetic member; 20, back plate; 30, connecting assembly; 31, first connecting member; 32, second connecting member; 33, third connecting member; 33a, first connecting part; 33b, second connecting part; 34, limiting member; 35, elastic member; 36, outer ring; 37, inner ring; 40, protective cover; 41, through hole. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0022] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0023] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] refer to Figures 1 to 3, an embodiment of the present application provides a marine elevator, including a car, a traveling cable 100 and a traveling cable 100 protection device. The car is arranged in a hoistway and can be raised and lowered along a track. The traveling cable 100 is used to provide working power to the car, and is also responsible for signal control, communication, car lighting and ventilation and other functions. The traveling cable 100 has a fixed end 101 and a movable end 102. The fixed end 101 is used to connect to the elevator control cabinet, and the movable end 102 is used to connect to the car and move with the operation of the car. The traveling cable 100 protection device is used to protect the traveling cable 100 to prevent the traveling cable 100 from shaking under the action of airflow and waves.

[0027] In some embodiments, the accompanying cable 100 protection device includes a drag chain 10, which is arranged between the car and the elevator control cabinet, and the drag chain 10 wraps the accompanying cable 100. During use, the drag chain 10 can be freely extended and bent during the lifting of the car, which can not only protect the accompanying cable 100, but also will not cause the accompanying cable 100 to be tensioned, which is beneficial to the service life of the accompanying cable 100. It should be noted that the drag chain 10 is composed of a large number of chain links 11, and a large number of chain links 11 are connected end to end through a rotating shaft to form a chain. During use, the drag chain 10 can only rotate to a limited angle to one side, and when the two ends of the drag chain 10 are fixed, the shape of the drag chain 10 can remain unchanged, so as to resist external shaking.

[0028] In some embodiments, the drag chain 10 has a first end and a second end. The first end is provided with a fixed bracket 12, which is used to connect the first end to the back plate 20 so that the drag chain 10 will not be displaced as a whole during the expansion and contraction and bending process. The second end is provided with a mobile bracket 13, which is connected and fixed to the mobile end 102 of the accompanying cable 100 and is used to connect the second end to the car. In this embodiment, the mobile bracket 13 is provided with a threading hole, which is used to lead the accompanying cable 100 out from the side of the mobile bracket 13 to achieve the steering of the accompanying cable 100.

[0029] In some embodiments, the accompanying cable 100 protection device also includes a back plate 20, which is arranged on the inner wall of the shaft along the lifting direction of the car, and the back plate 20 is made of ferromagnetic steel. The drag chain 10 has a first side attached to the back plate 20 and a second side away from the back plate 20 along the first direction N, and the first side is provided with a magnetic suction member 14 for adsorbing the back plate 20. During use, the second side of the drag chain 10 can be adsorbed on the surface of the back plate 20 by the magnetic suction member 14, so that the drag chain 10 can be restricted to prevent the drag chain 10 from shaking due to its large length, causing the drag chain 10 and surrounding equipment to be damaged by contact, so that the device can be applied to the protection of the accompanying cable 100 of elevators with different lifting heights.

[0030] In some embodiments, the magnetic member 14 is a cylindrical permanent magnet. It should be understood that in a specific implementation, the outer surface of the magnetic member 14 is provided with a silicon steel material core to enhance the magnetic force of the magnetic member 14 and reduce wear. Of course, in other embodiments, the magnetic member 14 can also use rolling magnetic beads, which can reduce wear.

[0031] In some embodiments, the number of magnetic elements 14 is equal to the number of links 11 of the drag chain 10, and the magnetic elements 14 are respectively embedded on the side of the links 11 facing the back plate 20, that is, each link 11 of the drag chain 10 is provided with a magnetic element 14 on the side facing the back plate 20. During use, each link 11 of the drag chain 10 can be adsorbed with the back plate 20, which is conducive to improving the limiting effect of the drag chain 10.

[0032] In some embodiments, the first direction N is the chain width direction of the drag chain 10. That is, the chain width direction of the drag chain 10 is perpendicular to the back plate 20. When the magnetic attraction member 14 is arranged on the side of the chain width direction of the drag chain 10, the drag chain 10 can always maintain an adsorption state between each link 11 of the drag chain 10 and the back plate 20 during the process of following the extension and bending of the car, and the link 11 will not be separated from the back plate 20 due to the bending of the drag chain 10. Compared with the way that the thickness direction of the drag chain 10 is perpendicular to the back plate 20, such a design can significantly enhance the limiting effect of the drag chain 10.

[0033] In some embodiments, the accompanying cable 100 protection device further includes a connection component 30, which is connected between the moving end 102 (or the moving bracket 13) of the drag chain 10 and the car, and the connection component 30 is configured to allow the car to rotate relative to the drag chain 10 and move along a first direction. Specifically, the connection component 30 can realize a flexible connection between the car and the moving end 102 of the drag chain 10. When the distance between the car and the drag chain 10 changes or rotates during the lifting process, the connection component 30 can allow the car to rotate relative to the drag chain 10 and move along a first direction, so as to prevent the translational shaking of the car during movement from pulling the drag chain 10 off the back plate 20, thereby avoiding the separation of the drag chain 10 from the back plate 20 due to changes in the position and angle of the car, which is conducive to reducing the installation requirements for the car.

[0034] In some embodiments, the connection assembly 30 includes a first connection member 31, a second connection member 32, and a third connection member 33. The first connection member 31 is disposed at the moving end 102 (or the moving bracket 13) of the drag chain 10. The second connection member 32 is disposed at the car. The third connection member 33 has a first connection portion 33a for connecting the first connection member 31 and a second connection portion 33b for connecting the second connection member 32, one of the first connection portion 33a and the second connection portion 33b is configured to allow the car to move in a first direction, and the other is configured to allow the car to rotate relative to the drag chain 10. For example, the first connection portion 33a is sleeved on the first connection member 31 and can move relative to the first connection member 31 in the first direction, and the second connection portion 33b and the second connection member 32 are connected by a joint ball bearing. In this way, the connection assembly 30 can allow the car to rotate relative to the drag chain 10 and move in the first direction.

[0035] In some embodiments, one of the first connection portion 33a and the first connection member 31 is a rod-shaped structure, and the other is a structure with an inner cavity, such as a sleeve, a linear bearing, etc. This configuration enables the first connection portion 33a and the first connection member 31 to be sleeved, so that the connection assembly 30 allows the car to move relative to the drag chain 10 along the first direction. In this embodiment, the first connection portion 33a is a rod-shaped structure, and the first connection member 31 is a linear bearing.

[0036] In some embodiments, a limiting member 34 is provided between the first connection portion 33a and the first connection member 31, and the limiting member 34 is used to limit the first connection portion 33a from being separated from the first connection member 31. For example, the limiting member 34 is an elastic retaining ring, which is sleeved outside the first connection portion 33a and is used to form a limit with the first connection member 31 to prevent the first connection portion 33a from being separated from the first connection member 31 due to excessive movement distance. Such a configuration can improve the reliability of the structure.

[0037] In some embodiments, an elastic member 35 is provided between the first connection portion 33a and the first connection member 31, and the elastic member 35 is used to apply pressure to the first connection member 31 so that the first connection member 31 has a tendency to approach the back plate 20. For example, the elastic member 35 is a spring, which is sleeved outside the first connection portion 33a and located at the end of the first connection member 31 away from the back plate 20. The spring is in a compressed state when installed. During use, the spring can apply pressure to the first connection member 31 so that the first connection member 31 drives the drag chain 10 to move in a direction close to the back plate 20, so that the second side of the drag chain 10 remains in contact with the back plate 20. This arrangement can keep the second side of the drag chain 10 in contact with the back plate 20, thereby improving the stability of the structure.

[0038] In some embodiments, one of the second connection portion 33b and the second connection member 32 is provided with an inner ring 37 having an outer spherical surface, and the other is provided with an outer ring 36 having an inner spherical surface. The outer ring 36 is sleeved outside the inner ring 37, and allows the inner ring 37 to rotate in the outer ring 36. In this way, the second connection member 32 can be rotated arbitrarily around three axes in space relative to the second connection portion 33b, so that the connection assembly 30 can allow the car to rotate relative to the drag chain 10, and prevent the drag chain 10 from being pulled off the back plate 20 due to the change in angle when the car is raised or lowered. In this embodiment, the second connection portion 33b is provided with an outer ring 36 having an inner spherical surface, and the second connection member 32 is a hinge seat, on which the inner ring 37 having an outer spherical surface is provided.

[0039] In some embodiments, the third connecting member 33 is a straight rod structure. This configuration can simplify the structure of the third connecting member 33 and reduce costs. It should be understood that in a specific implementation, the second connecting portion 33b and the first connecting portion 33a can be separately configured or can be an integrated structure.

[0040] In some embodiments, the accompanying cable 100 protection device further includes a shield 40, which is disposed on the back plate 20 and forms a protective space with the back plate 20 for accommodating the drag chain 10. That is, the drag chain 10 is installed in the protective space formed by the shield 40 and the back plate 20, which can reduce the deposition of dust on the drag chain 10.

[0041] In some embodiments, a through hole 41 is provided on the side of the shield 40, and the moving end 102 of the drag chain 10 passes through the through hole 41 to connect with the connecting assembly 30. For example, a through hole 41 is provided on the side of the shield 40 away from the back plate 20, and the moving end 102 (moving bracket 13) of the drag chain 10 passes through the through hole 41 and is connected with the connecting assembly 30. During use, the moving end 102 (moving bracket 13) of the drag chain 10 can move up and down in the through hole 41 to synchronize with the car.

[0042] The above technical solution of the present application has the following beneficial technical effects: 1. In the accompanying cable 100 protection device of the embodiment of the present application, the second side of the drag chain 10 can be adsorbed on the surface of the back plate 20 by the magnetic suction member 14, so that the drag chain 10 can be restricted to prevent the drag chain 10 from shaking due to its large length, causing damage to the drag chain 10 and surrounding equipment, so that the device can be suitable for protecting the accompanying cable 100 of elevators with different lifting heights.

[0043] 2. In the accompanying cable 100 protection device of the embodiment of the present application, the connecting component 30 can realize the flexible connection between the car and the moving end 102 of the drag chain 10. When the distance between the car and the drag chain 10 changes or rotates during the lifting process, the connecting component 30 can allow the car to rotate relative to the drag chain 10 and move along the first direction. This can avoid the separation of the drag chain 10 and the back plate 20 due to changes in the position and angle of the car, which is beneficial to reduce the installation requirements for the car.

[0044] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this application.

[0045] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A marine elevator accompanying cable protection device, characterized in that: The device comprises: a back plate, a drag chain and a connecting component; The back plate is arranged in the hoistway along the lifting direction of the car; The drag chain is arranged in close contact with the back plate, and the drag chain has a first side in close contact with the back plate and a second side away from the back plate along a first direction, and the first side is provided with a magnetic attraction member for adsorbing the back plate; The connecting component is connected between the moving end of the drag chain and the car, and the connecting component is configured to allow the car to rotate relative to the drag chain and move along the first direction.

2. The marine elevator accompanying cable protection device according to claim 1 is characterized in that: The magnetic attraction component is arranged on one side of each link of the drag chain facing the back plate.

3. The marine elevator accompanying cable protection device according to claim 1 is characterized in that: The first direction is the chain width direction of the drag chain.

4. The marine elevator accompanying cable protection device according to claim 1, characterized in that: The connecting assembly includes a first connecting member, a second connecting member and a third connecting member; The first connecting member is arranged at the moving end of the drag chain; The second connecting member is arranged on the car; The third connecting member has a first connecting portion for connecting to the first connecting member and a second connecting portion for connecting to the second connecting member, one of the first connecting portion and the second connecting portion is configured to allow the car to move along the first direction, and the other is configured to allow the car to rotate relative to the drag chain.

5. The accompanying cable protection device for marine elevator according to claim 4 is characterized in that: The first connection portion is sleeved on the first connection member and can move relative to the first connection member along the first direction, and the second connection portion and the second connection member are connected via a joint ball bearing.

6. The accompanying cable protection device for marine elevator according to claim 5, characterized in that: A limiting member is provided between the first connecting portion and the first connecting piece, and the limiting member is used to limit the first connecting portion from being separated from the first connecting piece.

7. The marine elevator accompanying cable protection device according to claim 5, characterized in that: An elastic member is provided between the first connecting portion and the first connecting member, and the elastic member is used to apply pressure to the first connecting member so that the first connecting member tends to approach the back plate.

8. The marine elevator accompanying cable protection device according to claim 5, characterized in that: The third connecting member is a straight rod structure.

9. The marine elevator accompanying cable protection device according to claim 1, characterized in that: The device further comprises: a protective cover, which is arranged on the back plate and forms a protective space with the back plate for accommodating the drag chain.

10. The marine elevator accompanying cable protection device according to claim 9, characterized in that: A through hole is arranged on the side of the shield, and the moving end of the drag chain passes through the through hole to connect with the connecting component.

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