Hoisting device and hoisting method

Abstract

The invention relates to a hoisting device and a hoisting method. The hoisting device comprises a soft rope; the soft cable is connected into the tensioner, and the tensioner is adjusted to enable the soft cable to be tensioned or loosened; the multiple positioning blocks are arranged on the soft rope and used for being attached to the surface of the center cone; the positioning pin is fixed on the positioning block through an inhaul cable, and the positioning pin is suitable for being inserted into a connecting hole of a force bearing frame of the center cone. According to the hoisting device and the hoisting method, the hoisting stability and the mounting efficiency of the central cone can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine hoisting, and particularly to a hoisting device and a hoisting method. Background Art

[0002] The center cone of an aero-engine is installed on the load-bearing frame at the rear end of the engine and belongs to a part of the engine tail nozzle assembly. It is mainly used to adjust the direction and speed of the engine exhaust gas. The center cone of a high-bypass ratio civil aero-engine has a relatively large size and is approximately a thin-walled conical cylinder structure. Its outer contour is smooth and there is no sling transfer part. Usually, the center cone is assembled and disassembled on the engine by the method of multiple people lifting. In the lifting and assembling mode, during the installation or disassembly process of the center cone, affected by human factors, the stability of the parts is not high, and the center cone is deflected from the load-bearing frame, resulting in difficulties in installing or disassembling the center cone. Moreover, in the lifting mode, multiple operators need to cooperate with each other, and the installation efficiency is relatively low. Summary of the Invention

[0003] In view of the above problems of the prior art, the present invention provides a hoisting device and a hoisting method, which can improve the hoisting stability and installation efficiency of the center cone.

[0004] Specifically, the present invention provides a hoisting device suitable for a center cone, and the hoisting device includes:

[0005] A flexible cable;

[0006] A tensioner, into which the flexible cable is inserted, and the tensioner is adjusted to tension or relax the flexible cable;

[0007] A plurality of positioning blocks arranged on the flexible cable, and the positioning blocks are used to fit the surface of the center cone;

[0008] A positioning pin fixed to the positioning block by a cable, and the positioning pin is adapted to be inserted into the connection hole of the load-bearing frame of the center cone.

[0009] According to an embodiment of the present invention, one end of the cable is fixed to the positioning pin, and the other end is fixed to the positioning block by a fixing bolt.

[0010] According to an embodiment of the present invention, a plurality of the positioning blocks are discretely arranged on the flexible cable.

[0011] According to an embodiment of the present invention, the tensioner includes a base, a locking ring and an adjusting bolt. The bottom surface of the base fits the surface of the center cone, the locking ring is fixed to the base by the adjusting bolt, and the flexible cable passes through the locking ring;

[0012] Rotate the adjusting bolt in the first direction, and the locking ring moves away from the base to tension the flexible cable; rotate the adjusting bolt in the second direction, and the locking ring moves closer to the base to relax the flexible cable. The first direction and the second direction are opposite to each other.

[0013] According to an embodiment of the present invention, the length direction of the adjusting bolt is perpendicular to the axis direction of the central cone.

[0014] According to an embodiment of the present invention, the locking ring is fixed on the adjusting bolt through a connecting pin.

[0015] According to an embodiment of the present invention, a lifting hook is provided on the positioning block.

[0016] The present invention also provides a lifting method, which uses the aforementioned lifting device. The lifting method includes the steps:

[0017] S1, adjust the tensioner to relax the flexible cable;

[0018] S2, sling the lifting device on the outer wall of the central cone;

[0019] S3, insert the positioning pin into the connection hole of the load-bearing frame of the central cone;

[0020] S4, adjust the tensioner to tension the flexible cable and make the positioning block close to the outer wall of the central cone;

[0021] S5, lift the central cone.

[0022] According to an embodiment of the present invention, a lifting hook is provided on the positioning block. In step S5, the traveling crane is connected and fixed to the lifting hook, and the central cone is lifted by the traveling crane.

[0023] A lifting device and a lifting method provided by the present invention use a flexible cable, a tensioner, a positioning block and a positioning pin structure to reliably fix the lifting device on the outer wall of the central cone, which can improve the lifting stability and installation efficiency of the central cone.

[0024] It should be understood that the above general description and the following detailed description of the present invention are both exemplary and explanatory, and are intended to provide further explanation for the present invention described. Brief Description of the Drawings

[0025] Including the drawings is to provide a further understanding of the present invention. They are incorporated and constitute a part of this application. The drawings show embodiments of the present invention and, together with this specification, serve to explain the principles of the present invention.

[0026] In the drawings:

[0027] Figure 1The structural schematic diagram of the hoisting device according to an embodiment of the present invention is shown.

[0028] Figure 2 The usage state diagram of the hoisting device according to an embodiment of the present invention is shown.

[0029] Figure 3 The partial structural schematic diagram of the hoisting device according to an embodiment of the present invention is shown.

[0030] Figure 4 The structural schematic diagram of the tensioner of the hoisting device according to an embodiment of the present invention is shown.

[0031] Figure 5 The sectional view of the tensioner of the hoisting device according to an embodiment of the present invention is shown.

[0032] Figure 6 The flow block diagram of the hoisting method according to an embodiment of the present invention is shown.

[0033] Among them, the above-mentioned drawings include the following reference numerals:

[0034] Hoisting device 100

[0035] Installation bracket 101

[0036] Lifting positioner 102

[0037] Main lifting positioner 1021

[0038] Auxiliary lifting positioner 1022

[0039] Process adapter 103

[0040] Base module 200

[0041] Base assembly 201 Specific embodiments

[0042] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0044] Note that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0046] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0047] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the attached drawing is inverted, the device described as "above or over other devices or structures" will then be positioned as "below or under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned or rotated in other different ways, such as by 90 degrees or in other orientations, and corresponding interpretations should be made for the spatial relative descriptions used here.

[0048] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of this application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of this description. In addition, it is required to understand this application not only through the actual terms used, but also through the meanings implied by each term.

[0049] Figure 1 The structural schematic diagram of a hoisting device according to an embodiment of the present invention is shown. Figure 2 The usage state diagram of a hoisting device according to an embodiment of the present invention is shown. As shown in the figure, a hoisting device 100 is applicable to hoist a central cone 200. The hoisting device 100 mainly includes a flexible cable 101, a tensioner 102, a plurality of positioning blocks 103 and a positioning pin 104.

[0050] Among them, the flexible cable 101 is connected to the tensioner 102, and the tensioner 102 is adjusted to make the flexible cable 101 taut or loose;

[0051] A plurality of positioning blocks 103 are arranged on the flexible cable 101. The positioning blocks 103 are used to fit the smooth outer wall surface of the central cone 200;

[0052] The positioning pin 104 is fixed to the positioning block 103 through a cable 105. The positioning pin 104 is adapted to be inserted into the connection hole 202 of the load-bearing frame 201 of the central cone 200. The number of positioning pins 104 is the same as or less than the number of positioning blocks 103.

[0053] It is easy to understand that the flexible cable 101 is arranged on the outer wall of the central cone 200. The flexible cable 101 is tensioned by the tensioner 102, so that the positioning block 103 is closely attached to the smooth outer wall of the central cone 200, which is equivalent to adsorbing on the outer wall surface, so that the flexible cable 101 and the positioning block 103 are tightly fastened on the central cone 200. To prevent the hoisting device 100 from axially sliding back, the positioning block 103 is axially fixed on the smooth surface of the central cone 200 through the positioning pin 104 and the cable 105. The overall structure of the hoisting device 100 is simple and convenient to disassemble and assemble. Through the hoisting device 100, the central cone 200 can be easily hoisted, improving the working efficiency.

[0054] Figure 3 The partial structural schematic diagram of the hoisting device according to an embodiment of the present invention is shown. Preferably, as shown in the figure, one end of the cable 105 is fixed to the positioning pin 104, and the other end is fixed to the positioning block 103 through the fixing bolt 110. The direction of the cable 105 (in the tensioned state) is basically consistent with the axial direction of the central cone 200. Combining Figure 2 As shown, the positioning pin 104 is inserted and fixed in the connection hole 202 of the bearing frame 201 to prevent the flexible cable 101 and the positioning block 103 from sliding off along the axial direction of the central cone 200, so as to realize the axial limit and angular limit of the hoisting device 100 and improve the connection stability between the hoisting device 100 and the central cone 200.

[0055] Preferably, a plurality of positioning blocks 103 are discretely arranged on the flexible cable 101. The plurality of positioning blocks 103 clamp the outer wall of the central cone 200 from multiple angles on the outer wall of the central cone 200, and rely on the friction between the positioning block 103 and the wall surface of the central cone 200 to realize the adsorption fixation of the hoisting device 100 on the smooth outer wall of the central cone 200.

[0056] Figure 4 The structural schematic diagram of the tensioner of the hoisting device according to an embodiment of the present invention is shown. Figure 5 The cross-sectional view of the tensioner of the hoisting device according to an embodiment of the present invention is shown. Preferably, as shown in the figure, the tensioner 102 includes a base 106, a locking ring 107 and an adjusting bolt 108. The bottom surface of the base 106 is attached to the outer wall surface of the central cone 200. The locking ring 107 is fixed on the base 106 through the adjusting bolt 108, and the flexible cable 101 passes through the locking ring 107. When the adjusting bolt 108 is rotated in the first direction, the locking ring 107 moves away from the base 106, and the locking ring 107 drives the flexible cable 101 to move away from the base 106. When the flexible cable 101 is sleeved on the outer wall surface of the central cone 200, this operation tensions the flexible cable 101; when the adjusting bolt 108 is rotated in the second direction, the locking ring 107 drives the flexible cable 101 to approach the base 106. When the flexible cable 101 is sleeved on the outer wall surface of the central cone 200, this operation relaxes the flexible cable 101. Among them, the first direction and the second direction are opposite, which is equivalent to clockwise and counterclockwise, to tension or relax the flexible cable 101.

[0057] Preferably, the length direction of the adjusting bolt 108 is perpendicular to the axial direction of the central cone 200, which is conducive to quickly tensioning or relaxing the flexible cable 101.

[0058] Preferably, the locking ring 107 is fixed to the adjusting bolt 108 through the connecting pin 111.

[0059] Preferably, a lifting hook 109 is provided on the positioning block 103. The lifting equipment can lift the central cone 200 through the lifting hook 109.

[0060] Figure 6 The flowchart of the lifting method according to an embodiment of the present invention is shown. As shown in the figure, the present invention also provides a lifting method, which uses the aforementioned lifting device 100. The lifting method includes the steps:

[0061] S1, adjust the tensioner 102 to relax the flexible cable 101 so that the diameter enclosed by the flexible cable 101 is slightly larger than the bottom diameter of the central cone 200.

[0062] S2, place the lifting device 100 on the outer wall of the central cone 200 so that the plane where the flexible cable 101 is located is substantially parallel to the bottom surface of the central cone 200.

[0063] S3, insert the positioning pin 104 into the connection hole 202 of the load-bearing frame 201 of the central cone 200;

[0064] S4, adjust the tensioner 102 to tension the flexible cable 101 so that the positioning block 103 abuts against the outer wall of the central cone 200, and the entire lifting device 100 clamps the outer wall of the central cone 200 through the positioning block 103.

[0065] S5, lift the central cone 200.

[0066] Preferably, a lifting hook 109 is provided on the positioning block 103. In step S5, the traveling crane is connected and fixed to the lifting hook 109, and the central cone 200 can be easily lifted through the traveling crane.

[0067] It is easy to understand that when disassembling the lifting device 100, first adjust the tensioner 102 to relax the flexible cable 101. Then pull out the positioning pin 104 from the connection hole 202 of the load-bearing frame 201, and the entire lifting device 100 can be easily detached from the central cone 200.

[0068] The present invention provides a lifting device and a lifting method, which adopt a soft cable structure and can be mounted on the smooth outer wall of the center cone. A plurality of discretely distributed positioning blocks are used to clamp the outer wall of the center cone from the outside through a tensioner, so as to realize adsorption-type fixation of the lifting device on the outer wall of the smooth cone. In order to prevent axial slippage of the lifting device during the lifting process, positioning pins and cables are provided on the lifting device, and axial and angular limiting of the lifting device are realized through the connecting holes of the load-bearing frame of the center cone, thereby ensuring adsorption-type fixation of the lifting device on the center cone, improving the lifting stability of the center cone during installation and disassembly, reducing the risk of collision, and thus improving the installation efficiency of the center cone. In addition, the overall weight of the lifting device is relatively light, and the disassembly and assembly operations are simple.

[0069] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A lifting device, suitable for a central cone, comprising: Soft rope; A tensioner, the flexible cable is connected to the tensioner, and the tensioner is adjusted to tighten or loosen the flexible cable; A plurality of positioning blocks are arranged on the soft cable, and the positioning blocks are used to fit the surface of the central cone; A positioning pin is fixed on the positioning block through a cable, and the positioning pin is suitable for being inserted into a connecting hole of the load-bearing frame of the center cone.

2. The lifting device according to claim 1, characterized in that: One end of the pull cable is fixed to the positioning pin, and the other end is fixed to the positioning block through a fixing bolt.

3. The lifting device according to claim 1, characterized in that: A plurality of positioning blocks are discretely arranged on the flexible cable.

4. The lifting device according to claim 1, characterized in that: The tensioner comprises a base, a locking ring and an adjusting bolt, the bottom surface of the base is in contact with the surface of the central cone, the locking ring is fixed to the base by the adjusting bolt, and the soft cable is inserted into the locking ring; The adjusting bolt is rotated in a first direction, and the locking ring moves away from the base to tighten the flexible cable; the adjusting bolt is rotated in a second direction, and the locking ring moves closer to the base to loosen the flexible cable. The first direction and the second direction are opposite.

5. The lifting device according to claim 4, characterized in that: The length direction of the adjusting bolt is perpendicular to the axial direction of the central cone.

6. The lifting device according to claim 4, characterized in that: The locking ring is fixed on the adjusting bolt via a connecting pin.

7. The lifting device according to claim 1, characterized in that: A hook is provided on the positioning block.

8. A hoisting method, using the hoisting device according to claim 1, characterized in that: The hoisting method comprises the steps of: S1, adjust the tensioner to relax the soft cable; S2, mounting the lifting device on the outer wall of the central cone; S3, inserting the positioning pin into the connecting hole of the load-bearing frame of the center cone; S4, adjusting the tensioner to tighten the soft cable so that the positioning block is close to the outer wall of the central cone; S5, lifting the central cone.

9. The hoisting method according to claim 8, characterized in that: A hook is provided on the positioning block. In step S5, a crane is connected and fixed to the hook, and the center cone is lifted by the crane.

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