Annular crane beam electric hoist cable laying device and method

Abstract

The invention relates to an annular crane beam electric hoist cable laying device and method. The device comprises an annular crane beam, a distribution box, a center supporting part and an edge supporting part. According to the annular crane beam electric hoist cable laying device and method, a cable pulley does not need to be installed on the annular crane beam to be used for hanging the cable, operation of the electric hoist on the annular crane beam can be not limited, and a whole circle of circular motion can be achieved.

Description

Technical Field

[0001] This invention relates to the field of cable laying technology, and in particular to a cable laying device and method for an electric hoist with a ring crane beam. Background Technology

[0002] In the construction of LNG storage tanks, electric hoists, as a commonly used lifting equipment, have been widely used. Based on the characteristics of LNG storage tanks, a ring-shaped crane beam track (with a diameter of 84 meters) is set at the edge of the tank arch beam structure. The electric hoist is installed on the ring track to perform circular motion to achieve the hoisting of the cylindrical inner tank wall panels.

[0003] Electric hoists generally include components such as cable trolleys, reducers, lifting motors, running motors, drum devices, hook devices, fire stop devices, and couplings. Existing electric hoists typically use cable trolleys for power supply. For example, Chinese utility model patent CN202265323U discloses an electric hoist cable trolley system where the power cable is suspended on the cable trolley, and a stable and reliable power supply to the electric hoist is achieved by controlling the movement of the cable trolley. However, the system has the following problems when running on the LNG storage tank ring crane beam: (1) The electric hoist runs along the entire ring crane beam, with a total travel distance of 264 meters. Therefore, the required cable length is long and the number of cable trolleys is large, resulting in the cable trolleys occupying a lot of space on the ring track. Therefore, it is difficult for the electric hoist to achieve a full circle of motion. (2) Due to the large size and heavy weight of the inner tank wall panels, when using electric hoists to lift the inner tank wall panels, two electric hoists are usually used to lift one wall panel at the same time. Therefore, at least two electric hoists need to be installed on the same ring crane beam for linkage operation. Also, because the cable trolleys occupy a lot of track space, the travel route of the two linked electric hoists is restricted, and it is impossible to achieve a full circle of motion. Summary of the Invention

[0004] In view of this, the present invention provides a cable laying device and method for an electric hoist of a ring crane beam.

[0005] Specifically, the present invention is achieved through the following technical solution:

[0006] According to a first aspect of the present invention, a cable laying device for an electric hoist of a ring crane beam is provided, comprising:

[0007] A ring-shaped crane beam is used to power the sliding motion of the electric hoist; the ring-shaped crane beam is arranged concentrically on the outer edge of the top of the LNG storage tank;

[0008] A distribution box is used to supply power to the electric hoist; the distribution box is fixed on the aluminum ceiling beam of the LNG storage tank, and the distribution box is connected to the electric hoist via a cable;

[0009] A central support is provided to support and fix the first end of each of the cables and to enable the first end to rotate about the central axis of the annular crane beam; the central support is located at the center of the aluminum ceiling beam.

[0010] An edge support is provided for supporting and fixing the second end of each of the cables, and enabling the second end to rotate about the central axis of the annular crane beam, so that the cable rotates along with the electric hoist as it travels along the annular crane beam; the edge support is located at the outer end of the aluminum ceiling beam and is positioned below the corresponding electric hoist.

[0011] Optionally, the central support includes: a fixing plate, a fixing rod, a turntable, and a cable fixing clamp, wherein the fixing plate is fixed to the center of the aluminum ceiling beam, the fixing rod extends vertically downward from the bottom center of the fixing plate, at least two turntables are rotatably mounted on the fixing rod, and the cable fixing clamp is mounted on the edge of the turntable.

[0012] Optionally, the turntable is rotatably mounted on the fixed rod via rolling bearings.

[0013] Optionally, the turntables are spaced apart along the axial direction of the fixed rod.

[0014] Optionally, the distance between two adjacent turntables is 200-300mm.

[0015] Optionally, the edge support includes: a cable protection pipe, a support frame, rollers, a connecting plate, and a retaining ring track. The cable protection pipe is vertically positioned below the wiring terminal of the electric hoist. The support frame is positioned between the cable protection pipe and the retaining ring track. One end of the support frame is connected to the cable protection pipe, and the other end of the support frame is connected to the rollers. The retaining ring track is slidably engaged with the rollers. The retaining ring track is connected to the outer end of the longitudinal beam of the aluminum ceiling beam through the connecting plate.

[0016] Optionally, the support frame includes: diagonal braces and horizontal bars, wherein the cable protection pipe, the diagonal braces and the horizontal bars are interconnected to form a triangular support structure, and the rollers are mounted on the horizontal bars at the end away from the cable protection pipe.

[0017] Optionally, the lower end of the cable protection pipe has an arc-shaped structure.

[0018] Optionally, the number of connecting plates is the same as the number of longitudinal beams of the aluminum ceiling beam.

[0019] According to a second aspect of the present invention, a method for laying cables for an electric hoist of a ring-shaped crane beam is provided, implemented based on any of the aforementioned electric hoist cable laying devices for a ring-shaped crane beam, the method comprising the steps of:

[0020] A cable corresponding to the number of electric hoists is drawn from the distribution box;

[0021] The first end of the cable is fixed to the central support.

[0022] The second end of the cable is extended radially along the annular crane beam and connected to the electric hoist.

[0023] The technical solution provided by this invention brings at least the following beneficial effects:

[0024] The present application provides a cable laying device and method for an electric hoist on a ring crane beam that eliminates the need to install cable trolleys on the ring crane beam for suspending the cable, allowing the electric hoist to operate unrestricted on the ring crane beam and achieve a full circle of motion. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a cable laying device for an electric hoist on a ring crane beam provided in this application embodiment;

[0028] Figure 2 This is a schematic diagram of the central support structure of an electric hoist cable laying device for a ring crane beam, provided in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the central support structure of an electric hoist cable laying device for a ring crane beam, provided in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the edge support structure of an electric hoist cable laying device for a ring crane beam, provided in an embodiment of this application. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Figure 1 The illustration schematically depicts a cable laying device for an electric hoist on a ring-shaped crane beam, applicable to an embodiment of the present invention.

[0033] Reference Figure 1-4 As shown, this application provides a cable laying device for an electric hoist on a ring crane beam, comprising:

[0034] The annular crane beam 5 is used to power the sliding movement of the electric hoist 4; the annular crane beam 5 is arranged concentrically on the outer edge of the top of the LNG storage tank;

[0035] The distribution box 7 is used to supply power to the electric hoist 4; the distribution box 7 is fixed on the aluminum ceiling beam 6 of the LNG storage tank, and the distribution box 7 is connected to the electric hoist 4 through the cable 3;

[0036] The central support 1 is used to support and fix the first end of each of the cables 3 and enable the first end to rotate around the central axis of the annular crane beam 5; the central support 1 is located at the center of the aluminum ceiling beam 6.

[0037] The edge support 2 is used to support and fix the second end of each of the cables 3, and to enable the second end to rotate around the central axis of the annular crane beam 5, so that the cable 3 rotates along the annular crane beam 5 when the electric hoist 4 moves along the annular crane beam 5; the edge support 2 is located at the outer end of the aluminum ceiling beam 6 and is located below the corresponding electric hoist 4.

[0038] In this embodiment, the electric hoist cable laying device for the annular crane beam provided in this application includes an annular crane beam 5, a distribution box 7, a central support 1, and an edge support 2. The annular crane beam 5 is arranged concentrically on the top edge of the LNG storage tank, and at least two electric hoists 4 are mounted on the annular crane beam 5. The distribution box 7 is fixed on the aluminum ceiling beam 6 of the LNG storage tank, and the distribution box 7 is connected to the electric hoists 4 through cables 3 to supply power to the electric hoists 4. When two electric hoists 4 are set, two cables 3 are led out from the distribution box 7. The central support 1 is located at the center of the aluminum ceiling beam 6 of the LNG storage tank, and is used to support and fix the first end of each cable 3, and to enable the end to rotate around the central axis of the annular crane beam 5. The number of edge support parts 2 is equal to that of electric hoists 4 and they are set one-to-one. That is, two edge support parts 2 are set for two electric hoists 4. The two edge support parts 2 are set at the outer end of the aluminum ceiling beam 6 of the LNG storage tank and are set one-to-one below the corresponding electric hoist 4. The edge support parts 2 are used to support and fix the other end of each cable 3 and enable the end to rotate around the central axis of the annular crane beam 5. The two ends of the cable 3 are supported and fixed by the central support part 1 and the edge support parts 2, and both ends can rotate around the central axis of the annular crane beam 5, thereby ensuring that the cable 3 can also rotate when the electric hoist 4 moves along the annular crane beam 5.

[0039] For example, the central support 1 includes: a fixing plate 11, a fixing rod 12, a turntable 14 and a cable fixing clamp 15, wherein the fixing plate 11 is fixed to the center of the aluminum ceiling beam 6, the fixing rod 12 is vertically extended downward from the bottom center of the fixing plate 11, at least two turntables 14 are rotatably mounted on the fixing rod 12, and the cable fixing clamp 15 is mounted on the edge of the turntable 14.

[0040] In this embodiment, the fixing plate 11 is fixed to the center of the aluminum ceiling beam 6 of the LNG storage tank. A fixing rod 12 extends vertically downward from the bottom center of the fixing plate 11. Two turntables 14 are rotatably mounted on the fixing rod 12 at intervals. The cable fixing clamp 15 is installed on the edge of the turntable 14.

[0041] For example, the turntable 14 is rotatably mounted on the fixed rod 12 via a rolling bearing 13.

[0042] In this embodiment, the turntable 14 is rotatably mounted on the fixed rod 12 via the rolling bearing 13, that is, the rolling bearing 13 is rotatably mounted on the fixed rod 12, and the turntable 14 is then fixed on the outer ring of the rolling bearing 13.

[0043] For example, the turntables 14 are spaced apart along the axial direction of the fixed rods 12.

[0044] In this embodiment, the number of turntables 14 is equal to the number of electric hoists 4, and the corresponding cables 3 do not interfere with each other when they rotate with the electric hoists 4.

[0045] For example, the distance between two adjacent turntables 14 is 200-300 mm.

[0046] In this embodiment of the application, the distance between the two turntables 14 is set to 200-300mm, thereby ensuring that the distance between adjacent turntables 14 is not too far, and that as many turntables 14 as possible can be set on a fixed rod 12.

[0047] For example, the edge support 2 includes: a cable protection pipe 21, a support frame, a roller 24, a connecting plate 25, and a retaining ring track 26. The cable protection pipe 21 is vertically arranged below the wiring terminal of the electric hoist 4. The support frame is arranged between the cable protection pipe 21 and the retaining ring track 26. One end of the support frame is connected to the cable protection pipe 21, and the other end of the support frame is connected to the roller 24. The retaining ring track 26 is slidably engaged with the roller 24. The retaining ring track 26 is connected to the outer end of the longitudinal beam of the aluminum ceiling beam 6 through the connecting plate 25.

[0048] In this embodiment, the cable protection pipe 21 is vertically positioned below the wiring terminal of the electric hoist 4. The retaining ring track 26 is connected to the outer end of the longitudinal beam of the aluminum ceiling beam 6 of the LMG storage tank via a connecting plate 25. A support frame is installed between the cable protection pipe 21 and the retaining ring track 26, with one end of the support frame connected to the cable protection pipe 21 and the other end connected to a roller 24. When the electric hoist 4 travels along the annular crane beam 5, the support frame and the cable protection pipe 21 slide along the retaining ring track 26 via the roller 24 through the cable 3.

[0049] For example, the support frame includes: a diagonal brace 22 and a horizontal bar 23, wherein the cable protection pipe 21, the diagonal brace 22 and the horizontal bar 23 are interconnected to form a triangular support structure, and the roller 24 is mounted on the horizontal bar 23 at one end away from the cable protection pipe 21.

[0050] In this embodiment, the horizontal bar 23, the diagonal brace 22, and the cable protection pipe 21 are interconnected to form a triangular support structure, and the roller 24 is installed at the end of the horizontal bar 23 away from the cable protection pipe 21. The triangular support structure formed by the horizontal bar 23, the diagonal brace 22, and the cable protection pipe 21 improves the structural stability.

[0051] For example, the lower end of the cable protection tube 21 has an arc-shaped structure.

[0052] In this embodiment, the lower end of the cable protection tube 21 is a 90° arc-shaped structure. This structure facilitates the transition of the cable 3 from the horizontal direction to the vertical direction and reduces damage to the cable 3 during rotation.

[0053] For example, the number of connecting plates 25 is the same as the number of longitudinal beams of the aluminum ceiling beam 6.

[0054] In this embodiment, the number of connecting plates 25 is consistent with the number of longitudinal beams of the aluminum ceiling beam 6 of the LMG storage tank.

[0055] This application also provides a method for laying cables for an electric hoist on a ring-shaped crane beam, based on the cable laying device for an electric hoist on a ring-shaped crane beam as described above. The method includes the following steps:

[0056] The cable 3 corresponding to the number of electric hoists 4 is drawn out from the distribution box 7;

[0057] The first end of the cable 3 is fixed to the central support 1;

[0058] The second end of the cable 3 is extended along the radial direction of the annular crane beam 5 and connected to the electric hoist 4.

[0059] When using this annular crane beam electric hoist cable laying device, cables 3 corresponding to the number of electric hoists 4 are led out from the distribution box 7; one end of the cable 3 is fixed to the edge of the turntable 14 through the cable fixing clamp 15. The number of turntables 14 is equal to the number of cables 3 and corresponds one-to-one, so that the end can rotate with the rotation of the turntable 14, achieving the purpose of rotating the end around the central axis of the annular crane beam 5; the cable 3 passing through the cable fixing clamp 15 of each turntable 14 extends along the radial direction of the annular crane beam 5 and passes through the lower end of the corresponding cable protection pipe 21 and exits from the upper end to connect with the electric hoist 4, so that the point can rotate with the rotation of the edge support 2, achieving the purpose of rotating the end around the central axis of the annular crane beam 5, thereby achieving the purpose of rotating when the electric hoist 4 moves along the annular crane beam 5.

[0060] In this embodiment, since both the turntable 14 and the cable protection pipe 21 can rotate around the central axis of the annular crane beam 5, when the electric hoist 4 travels on the annular crane beam 5, it can drive the cable 3 to rotate. There is no need to install a cable trolley on the annular crane beam 5 to suspend the cable 3, so that the operation of the electric hoist 4 on the annular crane beam 5 is unrestricted and the electric hoist 4 can achieve a full circle of motion.

[0061] The present application provides a cable laying device and method for an electric hoist on a ring crane beam that eliminates the need to install cable trolleys on the ring crane beam for suspending the cable, allowing the electric hoist to operate unrestricted on the ring crane beam and achieve a full circle of motion.

[0062] It should be noted that in this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0063] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0064] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0065] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0066] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cable laying device for an electric hoist on a ring-shaped crane beam, characterized in that, include: The ring-shaped crane beam is used to power the sliding motion of the electric hoist; The annular crane beams are arranged concentrically on the outer edge of the top of the LNG storage tank; The distribution box is used to supply power to the electric hoist; The distribution box is fixed on the aluminum ceiling beam of the LNG storage tank, and the distribution box is connected to the electric hoist via a cable. A central support is provided for supporting and fixing the first end of each of the cables and enabling the first end to rotate about the central axis of the annular crane beam. The central support is located at the center of the aluminum ceiling beam; An edge support is provided for supporting and fixing the second end of each of the cables, and enabling the second end to rotate about the central axis of the annular crane beam, so that the cable rotates along with the electric hoist as it travels along the annular crane beam; the edge support is located at the outer end of the aluminum ceiling beam and is positioned below the corresponding electric hoist.

2. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 1, characterized in that, The central support includes a fixing plate, a fixing rod, a turntable, and a cable fixing clamp. The fixing plate is fixed to the center of the aluminum ceiling beam. The fixing rod extends vertically downward from the bottom center of the fixing plate. At least two turntables are rotatably mounted on the fixing rod. The cable fixing clamp is installed on the edge of the turntable.

3. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 2, characterized in that, The turntable is rotatably mounted on the fixed rod via rolling bearings.

4. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 3, characterized in that, The turntables are spaced apart along the axial direction of the fixed rod.

5. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 3, characterized in that, The distance between two adjacent turntables is 200-300mm.

6. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 1, characterized in that, The edge support includes a cable protection pipe, a support frame, rollers, a connecting plate, and a retaining ring track. The cable protection pipe is vertically positioned below the wiring terminal of the electric hoist. The support frame is positioned between the cable protection pipe and the retaining ring track. One end of the support frame is connected to the cable protection pipe, and the other end is connected to the rollers. The retaining ring track slides with the rollers. The retaining ring track is connected to the outer end of the longitudinal beam of the aluminum ceiling beam through the connecting plate.

7. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 6, characterized in that, The support frame includes: diagonal braces and horizontal bars, wherein the cable protection pipe, the diagonal braces and the horizontal bars are interconnected to form a triangular support structure, and the rollers are installed on the horizontal bars at the end away from the cable protection pipe.

8. The cable laying device for an electric hoist on a ring-shaped crane beam according to claim 6, characterized in that, The lower end of the cable protection pipe has an arc-shaped structure.

9. A cable laying device for an electric hoist on a ring-shaped crane beam according to claim 6, characterized in that, The number of connecting plates is the same as the number of longitudinal beams of the aluminum ceiling beam.

10. A method for laying cables for an electric hoist on a ring-shaped crane beam, characterized in that, Based on the cable laying device for the electric hoist of the annular crane beam as described in any one of claims 1-9, the method includes the following steps: A cable corresponding to the number of electric hoists is drawn from the distribution box; The first end of the cable is fixed to the central support. The second end of the cable is extended radially along the annular crane beam and connected to the electric hoist.

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