Automatic rotor and stator lifting appliance

Abstract

In order to achieve the purpose, the automatic rotor and stator lifting appliance comprises a lifting arm cross beam, a lifting assembly, a gravity center lifting lug assembly and a locking mechanism, the lifting assembly comprises at least one pair of lifting hooks and a first transverse electric displacement mechanism, and the first transverse electric displacement mechanism is used for driving the lifting hooks to move on the lifting arm cross beam so as to adjust the distance between the lifting hooks; the gravity center lifting lug assembly comprises a lifting lug and a balance weight piece which are connected with each other, and further comprises a second transverse electric displacement mechanism used for driving the balance weight piece to move on the lifting arm cross beam. And the locking mechanism is used for fixing the position of the lifting hook and / or the counterweight relative to the suspension arm cross beam. The lifting appliance realizes multi-state and multi-structure automatic adjustment and is applicable to rotors and stators of multiple specifications.

Description

Technical Field

[0001] The utility model relates to the field of aero-engine assembly, and particularly to the field of rotor slings. Background Art

[0002] After the assembly of an aero-engine rotor, the rotor needs to be lifted. Currently, there are two commonly used lifting slings. One is a special sling, that is, a specific sling is customized according to the size and center-of-gravity position of the rotor. This type of sling with such a structure needs to be specially customized, with high costs and a large amount of storage space occupied. The other is a general sling, which adjusts the position of the hook to the specified model manually, but has low efficiency and requires continuous adjustment during the hoisting process. Summary of the Utility Model

[0003] An object of the utility model is to provide an automatic stator-rotor sling, which realizes the automatic adjustment and applicability for multiple states and multiple structures.

[0004] The automatic stator-rotor sling for achieving the above object includes a boom crossbeam, a hoisting assembly, a center-of-gravity lifting lug assembly, and a locking mechanism. The hoisting assembly includes at least a pair of hooks and a first transverse electric displacement mechanism, and the first transverse electric displacement mechanism is used to drive the hooks to move on the boom crossbeam to adjust the distance between the hooks; the center-of-gravity lifting lug assembly includes a lifting lug and a counterweight connected to each other, and further includes a second transverse electric displacement mechanism for driving the counterweight to move on the boom crossbeam; the locking mechanism is used to fix the positions of the hooks and / or the counterweight relative to the boom crossbeam.

[0005] In one or more embodiments, the locking mechanism includes a hook locking mechanism, which uses hydraulic or pneumatic power to lock the transverse positions of the hooks.

[0006] In one or more embodiments, the locking mechanism includes a counterweight locking mechanism, which uses hydraulic or pneumatic power to lock the transverse position of the counterweight.

[0007] In one or more embodiments, the automatic stator-rotor sling further includes a spirit level arranged on the boom crossbeam.

[0008] In one or more embodiments, a first slide rail is arranged below the boom crossbeam, and the hooks move along the first slide rail.

[0009] In one or more embodiments, a second slide rail is arranged above the boom crossbeam, and the counterweight moves along the second slide rail.

[0010] In one or more embodiments, the sling further includes a remote control module, and the remote control module is in a two-way signal connection with the first transverse electric displacement mechanism and the second transverse electric displacement mechanism.

[0011] In one or more embodiments, the sling is used for hoisting one or more rotors and stators.

[0012] By providing two types of electric displacement mechanisms for adjusting the hook, the lifting lug, and the counterweight, the above-mentioned automated rotor-stator sling realizes the electric adjustment of the lateral span and the center-of-gravity adjustment of the overall structure, enabling the sling to be applicable to rotor components or stator components of various specifications and having better versatility; the electric adjustment method eliminates the need for manual adjustment by personnel and can achieve the adjustment of multiple states and structures, significantly improving the hoisting efficiency. Brief Description of the Drawings

[0013] The above and other features, properties, and advantages of the present utility model will become more apparent from the following description in conjunction with the drawings and embodiments, where:

[0014] Figure 1 is a schematic diagram of an embodiment of the automated rotor-stator sling.

[0015] Description of Symbolic Marks

[0016] 1 Boom crossbeam

[0017] 6 Counterweight

[0018] 7 Second lateral electric displacement mechanism

[0019] 9 Level gauge

[0020] 9 Lifting lug

[0021] 10, 11 Hooks

[0022] 12 Lifted item

[0023] 23 First lateral electric displacement mechanism

[0024] 45 Hook locking mechanism

[0025] 67 Counterweight locking mechanism Detailed Embodiments

[0026] The present utility model will be further described below in conjunction with specific embodiments and the drawings. More details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can obviously be implemented in many other ways different from this description. Those skilled in the art can make similar generalizations and deductions according to the actual application situation without departing from the connotation of the present utility model. Therefore, the protection scope of the present utility model should not be limited by the content of this specific embodiment.

[0027] It should be noted that these and subsequent other drawings are only for illustration purposes and are not drawn under the condition of equal scale, and should not be used to limit the actual scope of protection required by the present utility model.

[0028] It should be noted that the following content uses terms such as "first" and "second" to limit components, only for the convenience of distinguishing the corresponding components. Without additional statement, the above terms have no special meaning, so it cannot be understood as a limitation to the protection scope of this application.

[0029] Refer to Figure 1 As shown, the automatic rotor-stator lifting tool includes a boom crossbeam, a lifting assembly, a center of gravity lifting lug assembly, and a locking mechanism.

[0030] The boom crossbeam 1 serves as the main beam and mainly realizes the lateral cross-arm support of the boom.

[0031] The lifting assembly includes at least a pair of hooks 10, 11 and a first lateral electric displacement mechanism 23. The first lateral electric displacement mechanism 23 is used to drive the hooks to move on the boom crossbeam 1 to adjust the distance between the hooks 10, 11, so as to adapt to different specifications of rotor objects to be lifted, such as high-pressure compressor rotors, high-pressure turbine rotors, or high-pressure combined rotors, etc. The rotor objects to be lifted can be one or multiple.

[0032] The first lateral electric displacement mechanism 23 includes structures such as a motor and a slider rail to realize the electric adjustment of the lateral span of the hooks 10, 11, which is convenient for lapping with different rotors.

[0033] The center of gravity lifting lug assembly includes a lifting lug 9 and a counterweight 6 connected to each other, and also includes a second lateral electric displacement mechanism 7. The second lateral electric displacement mechanism 7 is used to drive the counterweight 6 to move on the boom crossbeam 1.

[0034] One end of the lifting lug 9 is connected to the counterweight 6, and the other end is connected to the overhead crane for lifting.

[0035] The automatic rotor-stator lifting tool also includes a locking mechanism for restricting the positions of the hooks and / or the counterweight. The locking mechanism is used to fix the positions of the hooks and / or the counterweight relative to the boom crossbeam.

[0036] The locking mechanism has an automatic locking function and includes mechanical brakes such as wedge brakes and disc brakes, or hydraulic brakes, or electromagnetic brakes.

[0037] The hook locking mechanism 45 uses hydraulic or pneumatic power to realize the lateral position of each hook along the boom crossbeam 1, that is, along the Figure 1 left and right positions in the figure, to prevent lateral continuous movement.

[0038] The counterweight locking mechanism 67 uses hydraulic or pneumatic power to lock the lateral position of the counterweight 6, stabilizing the position of the hook.

[0039] A first slide rail is provided below the boom crossbeam 1, and the hooks 10, 11 move along the first slide rail. A second slide rail is provided above the boom crossbeam, and the counterweight 6 and the lifting lugs 9 move along the second slide rail. The hooks 10, 11 are used to connect with the piece to be lifted 12.

[0040] In some embodiments, the automatic rotor-stator lifting tool further includes a spirit level 8 provided on the boom crossbeam 1. The spirit level 8 is used to monitor the horizontal state of the boom crossbeam 1 and cooperate with the counterweight 6 to adjust the center of gravity of the overall structure. The horizontal state of the boom crossbeam 1 is judged by observing the position of the bubble in the glass tube. When the spirit level 8 detects that the boom crossbeam 1 is in a non-horizontal state, the position of the counterweight 6 on the boom crossbeam 1 is adjusted, thereby adjusting the center of gravity of the overall structure.

[0041] Preferably, the lifting tool further includes a remote control module (not shown in the figure). The remote control module is bidirectionally signal-connected to the second lateral electric displacement mechanism 7 and the first lateral electric displacement mechanism 23 to automatically adjust the positions of the hook and the counterweight, solving the problems of stepless lateral adjustment of the hook and automatic adjustment of the center of gravity of the hook during the lifting of the rotor.

[0042] The following describes the usage process of the rotor lifting tool.

[0043] First step, for the piece to be lifted 12 during lifting, such as a rotor, corresponding supporting suspensions are connected to both sides.

[0044] Second step, connect the lifting lug 9 to the crane, and then connect one of the hooks to one side of the lifted rotor. Adjust the lateral distance of the hook through the first lateral electric displacement mechanism 23 connected to the two hooks 10, 11 respectively, so that the hooks 10, 11 can be connected to the rotor, and the spacing is adapted to the length of the rotor.

[0045] Third step, adjust the lengths of the two hooks 10, 11 as needed to make the two side suspensions of equal length and keep the rotor in a horizontal state.

[0046] Fourth step, use the hook locking mechanism 45 to lock the two lateral hooks 10, 11 on both sides.

[0047] Fifth step, lift the engine rotor. The lifting process should be slow. During lifting, the second lateral electric displacement mechanism 7 adjusts the position of the counterweight 6 by obtaining the state of the spirit level 8. As the slow lifting progresses, when the spirit level 8 remains within a certain stable horizontal range, the second lateral electric displacement mechanism 7 stops moving. At this time, the counterweight locking mechanism 67 locks to prevent the counterweight 6 from moving further.

[0048] In the sixth step, after the rotor is hoisted to the specified position, remove the suspensions on both sides of the rotor part. At this time, the first transverse electric displacement mechanism 23 and the second transverse electric displacement mechanism 7 are restored as required.

[0049] The above-mentioned lifting tool can hoist rotors of different sizes and is also applicable to the hoisting of stators; it can automatically adjust the center of gravity during the hoisting process, thereby improving the hoisting efficiency, reducing the labor cost, and ensuring the assembly progress.

[0050] For ease of description, the above content uses spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" 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 in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used herein.

[0051] Meanwhile, this application uses specific terms to describe the embodiments of this application. Such as "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0052] Although the present utility model is disclosed above with preferred embodiments, it is not used to limit the present utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model fall within the protection scope defined by the claims of the present utility model.

Claims

1. Automatic stator lifting tool, characterized in that, Comprising: The boom crossbeam; The hoisting assembly, including at least a pair of hooks and a first transverse electric displacement mechanism, wherein the first transverse electric displacement mechanism is used to drive the hooks to move on the boom crossbeam so as to adjust the distance between the hooks; The center of gravity lifting lug assembly, including a lifting lug and a counterweight piece connected to each other, and further including a second transverse electric displacement mechanism for driving the counterweight piece to move on the boom crossbeam; And The locking mechanism is used to fix the positions of the hooks and / or the counterweight piece relative to the boom crossbeam.

2. The automated stator-hanging tool according to claim 1, characterized in that, The locking mechanism includes a hook locking mechanism, which uses hydraulic or pneumatic power to lock the transverse positions of the hooks.

3. The automated stator-to-rotor lifting tool according to claim 1 or 2, characterized in that, The locking mechanism includes a counterweight locking mechanism, which uses hydraulic or pneumatic power to lock the transverse position of the counterweight piece.

4. The automated stator-rotor lifting tool according to claim 1, wherein The automatic rotor-stator lifting tool further includes a spirit level arranged on the boom crossbeam.

5. The automated stator-to-rotor lifting tool according to claim 1, wherein A first slide rail is arranged below the boom crossbeam, and the hook moves along the first slide rail.

6. The automated stator-rotor hoist according to claim 1, characterized in that, A second slide rail is arranged above the boom crossbeam, and the counterweight piece moves along the second slide rail.

7. The automated stator-rotor lifting tool according to claim 1, wherein The lifting tool further includes a remote control module, and the remote control module is in a two-way signal connection with the first transverse electric displacement mechanism and the second transverse electric displacement mechanism.

8. The automated stator-rotor lifting tool according to claim 1, wherein, The lifting tool is used for hoisting one or more rotors and stators.

Images