Turnover clamping device and method for turning turbine disc assembly

Abstract

The invention discloses an overturning clamping device and a method for overturning a turbine disc assembly, relates to the field of aero-engine hoisting, and aims to more conveniently position and overturn the turbine disc assembly. The turnover clamping device comprises a disc center clamp, a suspension arm assembly, a first suspension ring and a second suspension ring. The disc center clamp comprises a ring body, a supporting arm and a clamping part; one end of the supporting arm is fixed on the circumferential outer wall of the ring body, and the clamping part is mounted at the other end of the supporting arm in a position switchable manner; the ring body comprises a through hole; the suspension arm assembly comprises a first suspension arm and a second suspension arm which are nested; the first lifting arm comprises a first mounting hole; one end of the second lifting arm is mounted in the first mounting hole in a sliding manner; the second lifting arm comprises an extending position and a retracting position; the first lifting ring is rotatably mounted on the first lifting arm; the second lifting ring is rotatably installed on the second lifting arm. According to the technical scheme, the turbine disc does not need to be hoisted in the air before being installed, and the danger caused by the fact that an operator stands below the turbine disc for operation is reduced.

Description

Technical Field

[0001] The invention relates to the field of aviation engine hoisting, and in particular to a flipping clamping device and a method for flipping a turbine disc assembly. Background Art

[0002] The turbine disc assembly is an important component of the low-pressure turbine, and the assembly process requires a flipping operation. In the related art, there is the following hoist: the hoist includes a center rod, a lifting arm rotatably connected to the center rod, and a clamping portion installed on the circumference of the center rod. There are two lifting arms, one of which is installed at each axial end of the center rod. The operation of the turbine disc assembly includes two parts: fixing the turbine disc assembly and flipping the turbine disc assembly. In order to achieve these two operations, the entire operation process is as follows: first, adjust the turbine disc assembly off the ground and lift the turbine disc assembly in mid-air; ensure that there is enough installation space for the lifting arms at both ends of the center rod; then position the clamping portion with the center hole of the turbine disc.

[0003] The inventors have discovered that the prior art has at least the following problems: the above-mentioned hoist must be installed at the bottom of the turbine disc with the aid of a special hollow assembly workbench or a crane to raise the turbine disc, and the installation of the hoist at the bottom of the turbine disc requires the operator to stand under the bottom of the turbine disc to operate, which poses certain safety risks. Summary of the invention

[0004] The present invention provides a flipping clamping device and a method for flipping a turbine disc assembly, so as to more conveniently position and flip the turbine disc assembly.

[0005] An embodiment of the present invention provides a flip clamping device, comprising:

[0006] The disk core clamp comprises a ring body, a support arm and a clamping portion; one end of the support arm is fixed to the circumferential outer wall of the ring body, and the clamping portion is installed at the other end of the support arm in a switchable position; the ring body comprises a through hole;

[0007] The arm assembly comprises a first arm and a second arm which are nested; the first arm and the second arm are both detachably mounted on the through hole, and one of the first arm and the second arm can be selectively kept in detachable connection with the through hole; the first arm comprises a first mounting hole; one end of the second arm is slidably mounted on the first mounting hole; the second arm comprises an extended position and a retracted position; when the second arm is in the retracted position, the bottom of the second arm is located in the axial region of the turbine disk assembly to be turned over;

[0008] A first lifting ring, rotatably mounted on an end of the first lifting arm away from the ring body; and

[0009] The second lifting ring is rotatably mounted on one end of the second lifting arm away from the ring body.

[0010] In some embodiments, the second boom is constructed to switch between the retracted position and the extended position: when the second boom is in the retracted position, the total length of the first boom and the second boom is the shortest, and the second boom slides maximally into the first mounting hole of the first boom; when the second boom is in the extended position, the total length of the first boom and the second boom is the longest, and the second boom slides maximally out of the first mounting hole of the first boom under the action of its own gravity.

[0011] In some embodiments, the first suspension arm includes a first slide groove and a first positioning hole; the first slide groove and the first positioning hole both penetrate the wall of the first suspension arm and are connected to the first mounting hole;

[0012] The second suspension arm comprises a second mounting hole, a second slide groove and a second positioning hole; the second slide groove and the second positioning hole both penetrate the wall of the second suspension arm and are both connected to the second mounting hole;

[0013] The boom assembly also includes: a first limit member and a second limit member; one end of the first limit member is installed in the first positioning hole, and the other end extends into the second slide groove; one end of the second limit member is installed in the second positioning hole, and the other end extends into the first slide groove.

[0014] In some embodiments, an interval angle between the first slide groove and the first positioning hole in the circumferential direction of the first suspension arm is equal to an interval angle between the second slide groove and the second positioning hole in the circumferential direction of the second suspension arm.

[0015] In some embodiments, the flip clamping device further comprises:

[0016] The first locking assembly is configured to lock the second boom in a retracted position.

[0017] In some embodiments, the first locking assembly includes:

[0018] A first locking hole, wherein the first suspension arm further comprises the first locking hole;

[0019] a second locking hole, the second suspension arm further comprising the second locking hole; and

[0020] a first locking member; when the first boom and the second boom are in a retracted position, the first locking hole and the second locking hole are aligned, and the first locking member is inserted into the first locking hole and the second locking hole to lock the first boom and the second boom.

[0021] In some embodiments, the flip clamping device further comprises:

[0022] The second locking assembly is configured to lock the second boom in the extended position.

[0023] In some embodiments, the second locking assembly includes:

[0024] A third locking hole, wherein the first suspension arm further comprises the third locking hole;

[0025] a fourth locking hole, wherein the second suspension arm or the ring body further comprises the fourth locking hole; and

[0026] a second locking member; when the first boom and the second boom are in an extended position, the third locking hole and the fourth locking hole are aligned, and the second locking member is inserted into the third locking hole and the fourth locking hole to lock the first boom and the second boom.

[0027] In some embodiments, the first lifting ring is constructed in a C shape, and the open end of the first lifting ring is rotatably connected to the end of the first lifting arm away from the ring body; the first lifting ring is freely switched between the following positions: rotated to be partially located on the outside of the first lifting arm, and rotated to the entire first lifting ring does not exceed the first lifting arm.

[0028] In some embodiments, the second lifting ring is constructed in a C shape, and the open end of the second lifting ring is rotatably connected to the end of the second lifting arm away from the ring body; the second lifting ring is freely switched between the following positions: rotated to be partially located on the outside of the second lifting arm, and rotated to the entire second lifting ring does not exceed the second lifting arm.

[0029] In some embodiments, a slot and a plurality of first fixing holes connected to the slot are provided at the end of the support arm away from the ring body, and at least one second fixing hole is correspondingly provided at one end of the clamping portion; one end of the clamping portion is located in the slot, and the second fixing hole is aligned with at least one of the first fixing holes.

[0030] In some embodiments, a plurality of the support arms are arranged at intervals along the circumference of the ring body, and each of the support arms is connected to a corresponding clamping portion.

[0031] In some embodiments, along the radial direction of the ring body, the total length of the support arm and the clamping portion is configured to be adjustable to meet the requirements of clamping and fixing turbine disk assemblies with different diameters.

[0032] In some embodiments, the ring body includes a first connecting hole and a second connecting hole, the first boom includes a third connecting hole, and the second boom includes a fourth connecting hole; the first connecting hole corresponds to the third connecting hole; the second connecting hole corresponds to the fourth connecting hole; wherein the following connection states can be selected: the first connecting hole and the third connecting hole are aligned and fixedly connected, and the second connecting hole and the fourth connecting hole are aligned and fixedly connected.

[0033] An embodiment of the present invention further provides a method for flipping a turbine disk assembly, comprising the following steps:

[0034] Locking the boom assembly of the flip clamping device provided by any technical solution of the present invention in a retracted state;

[0035] Fixing the clamping portion of the flip clamping device to the turbine disc;

[0036] Connecting one of the first boom and the second boom to a first crane;

[0037] Unlocking the first boom and the second boom, so that the boom of the first boom and the second boom that is not connected to the first crane extends;

[0038] locking the boom assembly in an extended state;

[0039] Connecting the arm of the first boom and the second boom that is not connected to the first crane to the second crane;

[0040] The turbine disk assembly is flipped to a set angle by using the first crane and the second crane.

[0041] The flip clamping device provided by the above technical solution includes a disk core clamp, a first lifting arm and a second lifting arm. The disk core clamp can fix the turbine disk assembly; the second lifting arm includes an extended position and a retracted position; when the second lifting arm is in the retracted position, the end of the second lifting arm away from the first lifting arm is retracted in the axial area of ​​the hoisted turbine disk assembly. In this way, during the installation of the turbine disk assembly, the disk core clamp and the turbine disk can be fixed together without hanging the turbine disk in mid-air. When the turbine disk assembly needs to be flipped, the first lifting arm is first lifted up with the help of the first lifting ring, and then the second lifting arm is switched to the extended state. Then the second lifting arm can be lifted up with the help of the second lifting ring. The above technical solution eliminates the need to lift the turbine disk in mid-air before installing it, greatly simplifies the installation of the turbine disk assembly, improves the installation efficiency, and reduces the danger of operators standing under the turbine disk to operate, and the reliability of the operation is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0043] Figure 1 An exploded schematic diagram of a flip clamping device provided in an embodiment of the present invention.

[0044] Figure 2 A schematic structural diagram of a flip clamping device provided in an embodiment of the present invention.

[0045] Figure 3 This is a schematic diagram of the flip clamping device provided by an embodiment of the present invention in a retracted state at the beginning of installation.

[0046] Figure 4 This is a schematic structural diagram of the flip clamping device provided in an embodiment of the present invention after installation.

[0047] Figure 5 A schematic diagram of a method for flipping a turbine disk assembly provided in an embodiment of the present invention.

[0048] Reference numerals:

[0049] 1. Center clamp; 2. Suspension arm assembly; 3. First lifting ring; 4. Second lifting ring; 5. First locking assembly; 6. Second locking assembly;

[0050] 11. Ring body; 12. Support arm; 13. Clamping part;

[0051] 111. first connection hole; 112. second connection hole;

[0052] 21. first suspension arm; 22. second suspension arm; 23. first stopper; 24. second stopper;

[0053] 211, first slide groove; 212, first positioning hole; 213, third connecting hole;

[0054] 221, second mounting hole; 222, second slide groove; 223, second positioning hole; 224, fourth connecting hole;

[0055] 51. first locking hole; 52. second locking hole; 53. first locking member;

[0056] 61. Third locking hole; 62. Fourth locking hole; 63. Second locking piece. DETAILED DESCRIPTION

[0057] Combine the following Figure 1 to Figure 5 The technical solution provided by the present invention is described in more detail.

[0058] See also Figures 1 to 4 The embodiment of the present invention provides a flip clamping device, including a core clamp 1, a suspension arm assembly 2, a first suspension ring 3 and a second suspension ring 4. The core clamp 1 includes a ring body 11, a support arm 12 and a clamping portion 13; one end of the support arm 12 is fixed to the circumferential outer wall of the ring body 11, and the clamping portion 13 is installed at the other end of the support arm 12 in a switchable position; the ring body 11 includes a through hole. The suspension arm assembly 2 includes a nested first suspension arm 21 and a second suspension arm 22; the first suspension arm 21 and the second suspension arm 22 can both be detachably installed in the through hole, and the first suspension arm 21 and the second suspension arm 22 can selectively choose to maintain a detachable connection with the through hole; the first suspension arm 21 includes a first mounting hole 210; one end of the second suspension arm 22 is slidably installed in the first mounting hole 210. The aperture of the first mounting hole 210 of the first suspension arm 21 is almost equal to the outer diameter of the second suspension arm 22, so that the first suspension arm 21 and the second suspension arm 22 can be aligned with the axis of the disk center fixture 1 (i.e., the axis of the turbine disk) during the telescopic process, reducing radial shaking during the lifting process, making it easy to operate and enhancing safety. The second suspension arm 22 includes an extended position and a retracted position. When the second suspension arm 22 is in the retracted position, the bottom of the second suspension arm 22 is located in the axial region of the turbine disk assembly to be flipped. The first suspension ring 3 is rotatably mounted on one end of the first suspension arm 21 away from the ring body 11. The second suspension ring 4 is rotatably mounted on one end of the second suspension arm 22 away from the ring body 11.

[0059] In actual scenarios, if the first suspension arm 21 is at the top, the first suspension arm 21 is detachably connected to the disk core clamp 1, and the second suspension arm 22 is not detachably connected to the disk core clamp 1. If the second suspension arm 22 is at the top, the second suspension arm 22 is detachably connected to the disk core clamp 1, and the first suspension arm 21 is not detachably connected to the disk core clamp 1. In the following embodiments, the first suspension arm 21 is described as being at the top.

[0060] See also Figure 1 , the disk core clamp 1 is used to be fixedly connected to the turbine disk. Its ring body 11 plays the role of installing and fixing the support arm 12. The support arm 12 is a slender component, which can reduce the weight of the boom assembly 2 on the one hand, and also enable the clamping portion 13 to reach the area where the turbine disk is located on the other hand. Since the diameters of turbine disks of different models are different, in some embodiments, along the radial direction of the ring body 11, the total length of the support arm 12 and the clamping portion 13 is constructed to be adjustable to meet the clamping and fixing of turbine disk assemblies of different diameters. There are many ways to achieve adjustable total length, such as setting the support arm 12 as a retractable structure, or setting the connection relationship between the support arm 12 and the clamping portion 13 to a slidable connection. By installing the clamping portion 13 at different positions of the support portion, the total length of the support arm 12 and the clamping portion 13 can be changed to meet the installation requirements of turbine disks of different models and diameters.

[0061] See also Figure 1In some embodiments, a slot and a plurality of first fixing holes connected to the slot are provided at the end of the support arm 12 away from the ring body 11, and at least one second fixing hole is correspondingly provided at one end of the clamping portion 13. One end of the clamping portion 13 is located in the slot, and the second fixing hole is aligned with at least one first fixing hole. A plurality of first fixing holes can be arranged in a row, and each first fixing hole is at a different position in the length direction of the support arm 12. A row of second fixing holes is also correspondingly provided at one end of the clamping portion 13, and each second fixing hole is also at a different position in the length direction of the clamping portion 13. The first fixing hole and the second fixing hole are specifically, for example, pin holes. The support arm 12 and the clamping portion 13 are fixed at a set position by inserting a pin shaft into the first fixing hole and the second fixing hole aligned with each other. The relative position of the clamping portion 13 and the support arm 12 is changed by sliding the clamping portion 13, thereby changing the total length of the support arm 12 and the clamping portion 13.

[0062] Continue to see Figure 1 A plurality of support arms 12 are arranged at intervals along the circumference of the ring body 11, and each support arm 12 is connected to a corresponding clamping portion 13. Specifically, taking three support arms 12 as an example, two adjacent support arms 12 are evenly distributed at intervals of 120°. The installation position of each clamping portion 13 and the corresponding support arm 12 is independently adjusted.

[0063] Along the axial direction of the turbine disk, the thickness of the support arm 12 and the thickness of the clamping portion 13 are both smaller than the axial thickness of the turbine disk. When the clamping portion 13 clamps the inner edge of the turbine disk, the support arm 12 and the clamping portion 13 will not be exposed in the axial area of ​​the turbine disk. That is, the disk core clamp 1 is very thin, and its thickness is smaller than the maximum axial dimension of the turbine disk, that is, the thickness indicated in the Z direction.

[0064] The first suspension arm 21 and the ring body 11 of the disk core clamp 1 are detachably connected, and the detachable connection can be realized by using pins, bolts and other components. After the first suspension arm 21 is connected to the disk core clamp 1, the relative position of the two will not change. Figure 1 The first suspension arm 21 has one end closed and the other end open. The first mounting hole 210 is a countersunk hole. The first mounting hole 210 provides a movement space for the extension and contraction of the second suspension arm 22.

[0065] The second boom 22 may also adopt a structure similar to that of the first boom 21 . The outer diameter of the second boom 22 matches the inner diameter of the first mounting hole 210 of the first boom 21 , and there is a small gap between the two, so that the second boom 22 can slide relative to the first boom 21 .

[0066] The second boom 22 is configured to switch between a retracted position and an extended position. When the second boom 22 is in the retracted position, the total length of the boom assembly 2 is the shortest, and the second boom 22 slides to the maximum extent into the first mounting hole 210 of the first boom 21, and the second boom 22 can be locked in the retracted position with the help of the first locking assembly 5 described later. When the second boom 22 is in the extended position, the total length of the boom assembly 2 is the longest, and in the installed state, the second boom 22 slides out of the first mounting hole 210 of the first boom 21 to the maximum extent under the action of its own weight, and the second boom 22 can be locked in the extended position with the help of the second locking assembly described later.

[0067] The first suspension arm 21 and the second suspension arm 22 may be provided with one or more sliding mechanisms to achieve the sliding of the second suspension arm 22 relative to the first suspension arm 21. In some embodiments, the first suspension arm 21 includes a first slide groove 211 and a first positioning hole 212. The first slide groove 211 and the first positioning hole 212 both penetrate the wall of the first suspension arm 21 and are both connected to the first mounting hole 210. The second suspension arm 22 includes a second mounting hole 221, a second slide groove 222 and a second positioning hole; the second slide groove 222 and the second positioning hole both penetrate the wall of the second suspension arm 22 and are both connected to the second mounting hole 221. The suspension arm assembly 2 also includes: a first stopper 23 and a second stopper 24; one end of the first stopper 23 is installed in the first positioning hole 212, and the other end extends into the second slide groove 222; one end of the second stopper 24 is installed in the second positioning hole, and the other end extends into the first slide groove 211.

[0068] The first stopper 23 is fixed in the first mounting hole 210 and is located in the second slide slot 222. The relative sliding distance between the first suspension arm 21 and the second suspension arm 22 is limited by the length of the second slide slot 222, and the first stopper 23 cannot be separated from the second slide slot 222.

[0069] The second stopper 24 is fixed in the second mounting hole 221 and is located in the first slide slot 211. The relative sliding distance between the first suspension arm 21 and the second suspension arm 22 is limited by the length of the first slide slot 211, and the first stopper 23 cannot be separated from the first slide slot 211.

[0070] It can be seen that the relative sliding distance between the first suspension arm 21 and the second suspension arm 22 is limited by the length of the first slide groove 211 and the length of the second slide groove 222. In some embodiments, the relative displacements limited by the first slide groove 211 and the second slide groove 222 are equal. Through the dual guiding and limiting effects of the first slide groove 211 and the second slide groove 222, the second suspension arm 22 has more sliding guide positions relative to the first suspension arm 21, is more stable, and is subjected to more balanced forces, so that the first suspension arm 21 and the second suspension arm 22 are not easily disengaged and fail.

[0071] Continue to see Figure 1 In some embodiments, the spacing angle between the first slide groove 211 and the first positioning hole 212 in the circumferential direction of the first suspension arm 21 is equal to the spacing angle between the second slide groove 222 and the second positioning hole in the circumferential direction of the second suspension arm 22 .

[0072] Continue to see Figure 1 In some embodiments, the flip clamping device further includes a first locking assembly 5, which is configured to lock the second suspension arm 22 in a retracted position. The first locking assembly 5 can be switched between locking and unlocking. When the first locking assembly 5 is in the locked state, the first suspension arm 21 and the second suspension arm 22 cannot move relative to each other, cannot extend or retract relative to each other, and cannot rotate relative to each other.

[0073] The first locking assembly 5 can adopt a purely mechanical limiting structure, so that the structure is more stable and reliable, and the operation is more convenient. Specifically, the first locking assembly 5 includes a first locking hole 51, a second locking hole 52 and a first locking member 53. The first locking member 53 is specifically a pin. The first suspension arm 21 also includes a first locking hole 51. The second suspension arm 22 also includes a second locking hole 52. When the first suspension arm 21 and the second suspension arm 22 are in the retracted position, the first locking hole 51 and the second locking hole 52 are aligned, and the first locking member 53 is inserted into the first locking hole 51 and the second locking hole 52 to lock the first suspension arm 21 and the second suspension arm 22.

[0074] In some embodiments, the flip clamping device further includes a second locking assembly, which is configured to lock the second suspension arm 22 in the extended position. The second locking assembly can adopt a purely mechanical limiting structure without electrical control, so that the structure is more stable and reliable, and the operation is more convenient. The second locking assembly can be switched between locking and unlocking. When the second locking assembly is in the locked state, the first suspension arm 21 and the second suspension arm 22 cannot move relative to each other, cannot extend or retract relative to each other, and cannot rotate relative to each other.

[0075] In some embodiments, the second locking assembly includes a third locking hole, a fourth locking hole, and a second locking member 63. The first suspension arm 21 also includes a third locking hole, and the third connecting hole 213 described later can be the same hole as the third locking hole. The second suspension arm 22 or the ring body 11 also includes a fourth locking hole, and the first connecting hole 111 described later can be the same hole as the fourth locking hole. When the first suspension arm 21 and the second suspension arm 22 are in the extended position, the third locking hole and the fourth locking hole are aligned, and the second locking member 63 is inserted into the third locking hole and the fourth locking hole to lock the first suspension arm 21 and the second suspension arm 22.

[0076] When the first suspension arm 21 and the second suspension arm 22 are in a free state, at this time, the first locking assembly 5 and the second locking assembly are both in an unlocked state. The second suspension arm 22 is freely extended and retracted relative to the first suspension arm 21, and the relative displacement is based on the displacement defined by the first slide groove 211 and the second slide groove 222. As long as either the first locking assembly 5 or the second locking assembly is in a locked state, the first suspension arm 21 and the second suspension arm 22 are fixedly connected, and there is no relative movement between the two.

[0077] In some embodiments, the first lifting ring 3 is constructed in a C shape, and the open end of the first lifting ring 3 is rotatably connected to the end of the first lifting arm 21 away from the ring body 11; the first lifting ring 3 is freely switched between the following positions: rotating to partially locate outside the first lifting arm 21, rotating to the first lifting ring 3 as a whole does not exceed the first lifting arm 21. The first lifting ring 3 can rotate freely to prevent affecting the installation of the turbine disk.

[0078] In some embodiments, the second lifting ring 4 is constructed in a C shape, and the open end of the second lifting ring 4 is rotatably connected to the end of the second lifting arm 22 away from the ring body 11; the second lifting ring 4 is freely switched between the following positions: rotating to partially locate outside the second lifting arm 22, rotating to the entire second lifting ring 4 does not exceed the second lifting arm 22. The first lifting ring 3 can be freely rotated to a set position to prevent affecting the installation of the turbine disk.

[0079] See also Figure 5 The embodiment of the present invention also provides a method for flipping a turbine disk assembly, which method does not require the turbine disk to be suspended in mid-air at the installation location. Even if the turbine disk is directly placed on the ground or other supporting components, the arm assembly 2 can be installed normally. The method includes the following steps:

[0080] Step S100, lock the arm assembly 2 of the flip clamping device provided by any technical solution of the present invention in a retracted state. Take the first arm 21 at the top and the second arm 22 at the bottom as an example for description. The third connection hole 213 of the first arm 21 is connected to the first connection hole 111 of the core clamp 1 by a pin. The second arm 22 is slidably connected to the first arm 21. The second locking assembly remains unlocked, and the first locking assembly 5 is in a locked state, locking the second arm 22 in a retracted state. The first lifting ring 3 and the second lifting ring 4 transfer crane installed on the first arm 21 and the second arm 22 can rotate around the installation axis. During the installation of the flip clamping device, the second lifting ring 4 located on the bottom second arm 22 can be turned horizontally or upward to shrink it above the installation edge of the turbine disk. After the turbine disk is lifted following the upper first arm 21, the second lifting ring 4 located on the bottom second arm 22 is turned to a vertical state under the action of gravity, and can be connected to the hook transfer crane to avoid the safety risks caused by the bottom operation of heavy objects.

[0081] Step S200, fix the clamping part 13 of the flip clamping device to the turbine disk. The radial length of the disk core clamp 1 is adjustable to meet the fixing requirements of turbine disk assemblies of different sizes.

[0082] Step S300, connecting one of the first boom 21 and the second boom 22 to the first crane, that is, connecting the first boom 21 to the first crane, and the first crane hooking the first lifting ring 3 connected to the first crane.

[0083] Step S400, unlocking the first boom 21 and the second boom 22, the boom of the first boom 21 and the second boom 22 not connected to the first crane extends, that is, the second boom 22 extends relative to the first boom 21. Pull out the first locking member 53, and unlock the first locking assembly 5.

[0084] Step S500, locking the boom assembly 2 in the extended state. The first locking assembly 5 remains unlocked, the second locking member 63 is inserted, and the second locking assembly is in the locked state, locking the second boom 22 in the extended state.

[0085] Step S600: connect the first boom 21 and the second boom 22 that are not connected to the first crane to the second crane. Connect the second boom 22 to the second crane. Directly use the second crane to hook the second lifting ring 4 installed on the second boom 22.

[0086] Step S700: using the first crane and the second crane to flip the turbine disc assembly to a set angle, for example, 180°.

[0087] It should be noted that the above installation process is described with the first suspension arm 21 on top as an example. In actual use, the second suspension arm 22 can also be set on top, and then it is the first suspension arm 21 that needs to be slid out. The above technical solution realizes the non-directional installation of the flip clamping device on the turbine disc, that is, the flip clamping device can be installed with the first suspension arm 21 on top or the second suspension arm 22 on top, which enhances the randomness and convenience of the installation of the hanger.

[0088] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flip clamping device, It is characterized in that include: A disk core clamp (1) comprises a ring body (11), a support arm (12) and a clamping portion (13); one end of the support arm (12) is fixed to the circumferential outer wall of the ring body (11), and the clamping portion (13) is mounted on the other end of the support arm (12) in a switchable manner; the ring body (11) comprises a through hole; The arm assembly (2) comprises a first arm (21) and a second arm (22) which are nested; the first arm (21) and the second arm (22) are both detachably mounted on the through hole, and the first arm (21) and the second arm (22) can be selectively selected to maintain a detachable connection with the through hole; the first arm (21) comprises a first mounting hole (210); one end of the second arm (22) is slidably mounted on the first mounting hole (210); the second arm (22) comprises an extended position and a retracted position; when the second arm (22) is in the retracted position, the bottom of the second arm (22) is located in the axial region of the turbine disk assembly to be turned over; A first suspension ring (3) rotatably mounted on an end of the first suspension arm (21) away from the ring body (11); and The second suspension ring (4) is rotatably mounted on an end of the second suspension arm (22) away from the ring body (11).

2. The flip clamping device according to claim 1, It is characterized in that The second boom (22) is constructed to switch between the retracted position and the extended position: when the second boom (22) is in the retracted position, the total length of the first boom (21) and the second boom (22) is the shortest, and the second boom (22) slides maximally into the first mounting hole (210) of the first boom (21); when the second boom (22) is in the extended position, the total length of the first boom (21) and the second boom (22) is the longest, and the second boom (22) slides maximally out of the first mounting hole (210) of the first boom (21) under the action of its own weight.

3. The flip clamping device according to claim 1, It is characterized in that The first suspension arm (21) comprises a first slide groove (211) and a first positioning hole (212); the first slide groove (211) and the first positioning hole (212) both penetrate the wall of the first suspension arm (21) and are both connected to the first mounting hole (210); The second suspension arm (22) comprises a second mounting hole (221), a second slide groove (222) and a second positioning hole; the second slide groove (222) and the second positioning hole both penetrate the wall of the second suspension arm (22) and are both connected to the second mounting hole (221); The boom assembly (2) further comprises: a first limiting member (23) and a second limiting member (24); one end of the first limiting member (23) is mounted in the first positioning hole (212), and the other end extends into the second slide groove (222); one end of the second limiting member (24) is mounted in the second positioning hole, and the other end extends into the first slide groove (211).

4. The flip clamping device according to claim 3, It is characterized in that The spacing angle between the first slide groove (211) and the first positioning hole (212) in the circumferential direction of the first suspension arm (21) is equal to the spacing angle between the second slide groove (222) and the second positioning hole in the circumferential direction of the second suspension arm (22).

5. The flip clamping device according to claim 3, It is characterized in that Also includes: The first locking assembly (5) is configured to lock the second boom (22) in a retracted position.

6. The flip clamping device according to claim 5, It is characterized in that The first locking assembly (5) comprises: A first locking hole (51), wherein the first suspension arm (21) further comprises the first locking hole (51); A second locking hole (52), the second suspension arm (22) further comprising the second locking hole (52); and a first locking member (53); when the first suspension arm (21) and the second suspension arm (22) are in a retracted position, the first locking hole (51) and the second locking hole (52) are aligned, and the first locking member (53) is inserted into the first locking hole (51) and the second locking hole (52) to lock the first suspension arm (21) and the second suspension arm (22).

7. The flip clamping device according to claim 3, It is characterized in that Also includes: The second locking assembly is configured to lock the second boom (22) in an extended position.

8. The flip clamping device according to claim 7, It is characterized in that The second locking assembly comprises: A third locking hole, wherein the first suspension arm (21) further comprises the third locking hole; a fourth locking hole, wherein the second suspension arm (22) or the ring body (11) further comprises the fourth locking hole; and a second locking member (63); when the first suspension arm (21) and the second suspension arm (22) are in the extended position, the third locking hole and the fourth locking hole are aligned, and the second locking member (63) is inserted into the third locking hole and the fourth locking hole to lock the first suspension arm (21) and the second suspension arm (22).

9. The flip clamping device according to claim 1, It is characterized in that The first lifting ring (3) is constructed in a C shape, and the open end of the first lifting ring (3) is rotatably connected to the end of the first lifting arm (21) away from the ring body (11); the first lifting ring (3) can be freely switched between the following positions: rotated to a position where a part of it is located outside the first lifting arm (21), and rotated to a position where the entire first lifting ring (3) does not exceed the first lifting arm (21).

10. The flip clamping device according to claim 1, It is characterized in that The second lifting ring (4) is constructed in a C shape, and the open end of the second lifting ring (4) is rotatably connected to the end of the second lifting arm (22) away from the ring body (11); the second lifting ring (4) can be freely switched between the following positions: rotated to a position where a portion is located outside the second lifting arm (22), and rotated to a position where the entire second lifting ring (4) does not exceed the second lifting arm (22).

11. The flip clamping device according to claim 1, It is characterized in that The end of the support arm (12) away from the ring body (11) is provided with a slot and a plurality of first fixing holes connected to the slot, and one end of the clamping portion (13) is correspondingly provided with at least one second fixing hole; one end of the clamping portion (13) is located in the slot, and the second fixing hole is aligned with at least one of the first fixing holes.

12. The flip clamping device according to claim 1, It is characterized in that A plurality of support arms (12) are arranged at intervals along the circumference of the ring body (11), and each support arm (12) is correspondingly connected to one clamping portion (13).

13. The flip clamping device according to claim 1, It is characterized in that Along the radial direction of the ring body (11), the total length of the support arm (12) and the clamping portion (13) is configured to be adjustable so as to meet the requirements of clamping and fixing turbine disk assemblies with different diameters.

14. The flip clamping device according to claim 1, It is characterized in that The ring body (11) includes a first connecting hole (111) and a second connecting hole (112); the first suspension arm (21) includes a third connecting hole (213); and the second suspension arm (22) includes a fourth connecting hole (224); the first connecting hole (111) corresponds to the third connecting hole (213); and the second connecting hole (112) corresponds to the fourth connecting hole (224); wherein the following connection states can be selected: the first connecting hole (111) and the third connecting hole (213) are aligned and fixedly connected, and the second connecting hole (112) and the fourth connecting hole (224) are aligned and fixedly connected.

15. A method for flipping a turbine disk assembly, It is characterized in that The following steps are involved: Locking the boom assembly (2) of the flip clamping device according to any one of claims 1 to 14 in a retracted state; Fixing the clamping portion (13) of the flip clamping device to the turbine disk; Connecting one of the first boom (21) and the second boom (22) to a first crane; Unlocking the first boom (21) and the second boom (22), so that the boom of the first boom (21) and the second boom (22) that is not connected to the first crane is extended; locking the boom assembly (2) in an extended state; Connecting the first boom (21) and the second boom (22) that is not connected to the first crane to the second crane; The turbine disk assembly is flipped to a set angle by using the first crane and the second crane.

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