Hoisting device for supporting a conical wall

Abstract

The application discloses a hoisting device for supporting a conical wall, which comprises a hoisting core and a lifting ring, the hoisting core is used for penetrating into a flange hole of a flange edge of the supporting conical wall, a lower end of the hoisting core is pivotally provided with a blocking piece, the blocking piece is used for abutting against a rear end surface of the flange edge, the lifting ring is connected with an upper end of the hoisting core, and the lifting ring is used for connecting a lifting hook. The hoisting core is inserted into the flange hole, and the blocking piece is used for abutting against the rear end surface of the flange edge, so that the hoisting core can be prevented from being pulled out of the flange hole, the upper end of the hoisting core is connected with the lifting ring, the lifting hook of the lifting device can be directly hooked on the lifting ring, and then the supporting conical wall can be hoisted. The hoisting device has the advantages of simple structure, convenient use, high safety, prevention of hand extrusion of the supporting conical wall, and improvement of the safety of hoisting of the supporting conical wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hoisting equipment of an aero-engine, and particularly relates to a hoisting device for supporting a conical wall. BACKGROUND

[0002] A low-pressure turbine rotor is an important component of an aero-engine. The low-pressure turbine rotor comprises a support conical wall, which is an important support structure of the low-pressure turbine rotor. As shown in FIG. 1, the support conical wall 90 is in a conical structure as a whole, the rear end support shaft journal is located in a conical cavity, and the front end face 93 of the flange edge 91 at the front end is located in an open space, and the rear end face 94 of the flange edge 91 is located in the conical cavity. Figure 1

[0003] Before the support conical wall 90 is assembled or during disassembly for inspection, the size and run-out of the support conical wall 90 need to be measured. During the measurement, the support conical wall 90 needs to be turned over and the like.

[0004] At present, the conical cavity of the support conical wall 90 is usually inspected or measured by using manual lifting operation of multiple persons. The support conical wall 90 is heavy, and manual lifting operation is difficult. In addition, there is almost no gap between the support conical wall 90 and the support table surface, and the hand may be difficult to be timely withdrawn. Once the operation is failed, the hand will be squeezed, and there is a great safety hazard. In addition, the outer side surface of the support conical wall 90 is a smooth conical surface, and the front end is a smooth flange edge 91 and a flange hole 92 in the flange edge 91. The ordinary lifting appliance cannot be lifted through the front end of the support conical wall 90. SUMMARY

[0005] The present application aims to solve the technical problem that the support conical wall is difficult to be lifted through the front end in the prior art, and provides a hoisting device for supporting a conical wall.

[0006] The present application solves the above technical problem by the following technical scheme:

[0007] The hoisting device for supporting a conical wall comprises a hoisting core and a lifting ring. The hoisting core is used for being inserted into a flange hole of a flange edge of the support conical wall. A lower end of the hoisting core is pivotally provided with a blocking piece, and the blocking piece is used for abutting against a rear end face of the flange edge. The lifting ring is connected with an upper end of the hoisting core, and the lifting ring is used for being connected with a lifting hook.

[0008] In the present application, the hoisting core is inserted into the flange hole, and the blocking piece is used for abutting against the rear end face of the flange edge, so that the hoisting core is prevented from being pulled out of the flange hole. Then, the lifting ring is connected with the upper end of the hoisting core, so that the lifting hook of the lifting appliance can directly hook the lifting ring, and the support conical wall can be lifted. The hoisting device is simple in structure, convenient to use, and high in safety. The hand is prevented from being squeezed by the support conical wall, and the safety of hoisting the support conical wall is improved. ​

[0009] Preferably, the blocking piece is switchable between an insertion state and a blocking state.

[0010] When the blocking piece is in the insertion state, the length direction of the blocking piece extends along the length direction of the hanging core, and the blocking piece is capable of passing through the flange hole.

[0011] When the blocking piece is in the blocking state, the length direction of the blocking piece is perpendicular to the length direction of the hanging core, and the blocking piece abuts against the rear end surface of the flange edge.

[0012] In the present scheme, by adopting the above structure, the flange hole can be conveniently inserted, and the rear end surface of the flange edge can be stably and reliably abutted against, thereby being convenient to use and high in safety.

[0013] Preferably, the blocking piece is a block, and the block is pivotally arranged at the lower end of the hanging core and is capable of rotating about a pivot axis.

[0014] In the present scheme, by adopting the above structure, the block is simple in structure, convenient to use and reliable.

[0015] Preferably, the weight of one side of the block relative to the pivot axis is greater than the weight of the other side of the block relative to the pivot axis.

[0016] In the present scheme, by adopting the above structure, the two ends of the block are different in weight, so that the block can naturally hang down, thereby being convenient to insert into the flange hole. After being inserted into the flange hole, the state of the block is easy to adjust, thereby being convenient to operate.

[0017] Preferably, an inclined angle is arranged at the end of one side of the block relative to the pivot axis.

[0018] Alternatively, a weight-reducing hole is arranged at the end of one side of the block relative to the pivot axis.

[0019] Alternatively, a counterweight is arranged at the end of one side of the block relative to the pivot axis.

[0020] In the present scheme, by adopting the above structure, the above structures can all realize the weight bias of the block relative to the pivot axis, thereby being convenient to insert into the flange hole, being convenient to adjust the state and being convenient to operate.

[0021] Preferably, the hoisting device further comprises a switching piece, the switching piece acts on the blocking piece, and the switching piece is used to switch the blocking piece to the blocking state.

[0022] In the present scheme, by adopting the above structure, the stability of the blocking piece can be improved, the blocking piece is prevented from changing the state accidentally, and the safety of the hoisting process is improved.

[0023] Preferably, the switching piece is a sleeve, the sleeve is sleeved on the core, and the lower end of the sleeve is pressed on the blocking piece to switch the blocking piece to the blocking state.

[0024] In the scheme, by adopting the above structure, the sleeve has simple structure, and under the action of gravity, the sleeve is pressed on the blocking piece, so that the state of the blocking piece is easily adjusted, and the operation is convenient.

[0025] Preferably, the outer circumferential surface of the sleeve is matched with the inner circumferential surface of the flange hole.

[0026] Preferably, the length of the blocking piece is greater than the diameter of the sleeve.

[0027] In the scheme, by adopting the above structure, the outer circumferential surface of the sleeve is matched with the inner circumferential surface of the flange hole, so that the stability can be improved, the sleeve is prevented from shaking accidentally, and the reliability and safety of the hoisting process are improved. The length of the blocking piece is greater than the diameter of the sleeve, so that the sleeve can easily adjust the state of the blocking piece, and the safety of the hoisting process is improved.

[0028] Preferably, the switching piece is an elastic piece, the elastic piece acts on the blocking piece to switch the blocking piece to the blocking state.

[0029] In the scheme, by adopting the above structure, the elastic piece has simple structure and is convenient to use.

[0030] Preferably, the hoisting device further comprises a fixing piece, the fixing piece is sleeved on the core from the upper end of the core, the lower end surface of the fixing piece abuts against the front end surface of the flange edge, and the lifting ring is connected to the core through the fixing piece.

[0031] In the scheme, by adopting the above structure, the fixing piece can further improve the stability of the hoisting device, prevent the blocking piece from adjusting the state accidentally, and improve the convenience and reliability of the operation of the hoisting device.

[0032] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the present application are obtained.

[0033] The positive progress effect of the present application is that:

[0034] In the present application, by inserting the core into the flange hole and abutting the blocking piece against the rear end surface of the flange edge, the core can be prevented from being pulled out of the flange hole, and then the lifting ring is connected to the upper end of the core, so that the hook of the lifting device can directly hook the lifting ring, and then the supporting cone wall can be lifted. The hoisting device has simple structure, is convenient to use, and is high in safety, can prevent hands from being squeezed by the supporting cone wall, and can improve the safety of hoisting the supporting cone wall. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1A structure diagram of a support cone wall in the prior art.

[0036] Figure 2 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall.

[0037] Figure 3 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall. Figure 2

[0038] Figure 4 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall.

[0039] Figure 5 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall. Figure 4

[0040] A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall. Figure 6 Figure 4 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall.

[0041] Figure 7 Figure 4 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall.

[0042] Figure 8 A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall. Figure 4

[0043] A structure diagram of a hoisting device of a preferred embodiment of the present application installed to a support cone wall.

[0044] Hoisting device 100

[0045] Lifting eye 11

[0046] Switching member 12

[0047] Sleeve 121

[0048] Counterbore 122

[0049] Fixing member 13

[0050] Lifting eye nut 14

[0051] Lifting core 20

[0052] Blocking member 21

[0053] Stopper 211

[0054] Bevel angle 212

[0055] Pivot shaft 22

[0056] Receiving groove 23

[0057] Ring table 24

[0058] ​​​​Supporting cone wall 90

[0059] Flange edge 91

[0060] Flange hole 92

[0061] Front end face 93

[0062] Rear end face 94 DETAILED DESCRIPTION

[0063] The present application will be more fully understood from the following embodiments taken in conjunction with the accompanying drawings, although the present application is not limited to the embodiments.

[0064] As Figures 2 to 8 shown, the present embodiment is a hoisting device 100 for supporting a cone wall 90, the hoisting device 100 comprising: a hoisting core 20 and a hoisting ring 11, the hoisting core 20 being used to pass through a flange hole 92 of a flange edge 91 of the supporting cone wall 90, a lower end of the hoisting core 20 being pivotally provided with a blocking piece 21, the blocking piece 21 being used to abut against a rear end face 94 of the flange edge 91; the hoisting ring 11 being connected with an upper end of the hoisting core 20, the hoisting ring 11 being used to connect a hoisting hook. The hoisting core 20 is inserted into the flange hole 92, and the blocking piece 21 is used to abut against the rear end face 94 of the flange edge 91, so that the hoisting core 20 can be prevented from being pulled out of the flange hole 92, and then the upper end of the hoisting core 20 is connected with the hoisting ring 11, so that the hoisting hook of the hoisting device can directly hook the hoisting ring 11, and then the supporting cone wall 90 can be hoisted. The hoisting device 100 has simple structure, is convenient to use, and has high safety, so that the safety of hoisting the supporting cone wall 90 can be improved.

[0065] The blocking piece 21 can be switched between an insertion state and a blocking state; when the blocking piece 21 is in the insertion state, a length direction of the blocking piece 21 extends along a length direction of the hoisting core 20, and the blocking piece 21 can pass through the flange hole 92; when the blocking piece 21 is in the blocking state, the length direction of the blocking piece 21 is perpendicular to the length direction of the hoisting core 20, and the blocking piece 21 abuts against the rear end face 94 of the flange edge 91. The present embodiment can facilitate insertion into the flange hole 92, and can stably and reliably abut against the rear end face 94 of the flange edge 91, so that the hoisting device is convenient to use and has high safety.

[0066] As a specific embodiment, the blocking piece 21 is a stopper 211, the stopper 211 being pivotally provided at a lower end of the hoisting core 20, and the stopper 211 being capable of rotating about a pivot shaft 22. The stopper 211 has simple structure, is convenient to use, and is reliable.

[0067] A weight of one side of the stopper 211 relative to the pivot shaft 22 is greater than a weight of the other side of the stopper 211 relative to the pivot shaft 22. The two ends of the stopper 211 have different weights, so that the stopper 211 can naturally hang down, and then insertion into the flange hole 92 is facilitated. After the stopper 211 is inserted into the flange hole 92, a state of the stopper 211 is easy to adjust, and operation is facilitated.

[0068] In the embodiment, as shown in Figure 6 the end of the one side of the block 211 relative to the pivot shaft 22 is provided with a bevel angle 212. In other embodiments, the end of the one side of the block 211 relative to the pivot shaft 22 can also be provided with a weight-reducing hole; or, the end of the one side of the block 211 relative to the pivot shaft 22 can also be provided with a counterweight. The above structures can all achieve the weight bias of the block 211 relative to the pivot shaft 22, facilitate the insertion into the flange hole 92, facilitate the adjustment of the state, and facilitate the operation.

[0069] In the embodiment, the block 211 is a cuboid metal block, as shown in Figure 6 the lower right corner of the cuboid metal block is cut off, so as to achieve the asymmetry of the cuboid metal block relative to the pivot shaft 22. In other embodiments, the block 211 can also be in other structural forms, such as a cylinder, a pipe, etc.

[0070] The hoisting device 100 further comprises a switching piece 12 acting on the blocking piece 21, and the switching piece 12 is used to switch the blocking piece 21 to the blocking state, so as to improve the stability of the blocking piece 21, avoid the accidental change of the state of the blocking piece 21, and improve the safety of the hoisting process.

[0071] In the embodiment, the switching piece 12 is a sleeve 121, the sleeve 121 is sleeved on the hoisting core 20, and the lower end of the sleeve 121 is pressed on the blocking piece 21, so as to switch the blocking piece 21 to the blocking state. The sleeve 121 is simple in structure, and under the action of gravity, the sleeve 121 is pressed on the blocking piece 21, so as to facilitate the adjustment of the state of the blocking piece 21 and the operation.

[0072] The outer peripheral surface of the sleeve 121 is fitted with the inner peripheral surface of the flange hole 92. The outer peripheral surface of the sleeve 121 is fitted with the inner peripheral surface of the flange hole 92, so as to improve the stability, avoid the accidental shaking of the sleeve 121, and improve the reliability and safety of the hoisting process.

[0073] The length of the blocking piece 21 is greater than the diameter of the sleeve 121. The length of the blocking piece 21 is greater than the diameter of the sleeve 121, so as to facilitate the adjustment of the state of the blocking piece 21 by the sleeve 121 and improve the safety of the hoisting process.

[0074] In other embodiments, the switching piece 12 is an elastic piece acting on the blocking piece 21, so as to switch the blocking piece 21 to the blocking state. The elastic piece is simple in structure and convenient to use. The elastic piece can be a torsion spring, which is arranged between the pivot shaft 22 and the block 211, and drives the block 211 to switch to the blocking state. When it is needed to switch the block 211 to the insertion state, the block 211 is only needed to be manually rotated and then inserted into the flange hole 92, and after the block 211 is exposed from the flange hole 92, the block 211 is switched to the blocking state under the action of the torsion spring.

[0075] The hoisting device 100 further comprises a fixing member 13, which is sleeved into the hoisting core 20 from the upper end of the hoisting core 20, the lower end surface of the fixing member 13 abuts against the front end surface 93 of the flange edge 91, and the lifting ring 11 is connected to the hoisting core 20 through the fixing member 13. The fixing member 13 can further improve the stability of the hoisting device 100, avoid the hoisting core 20 from falling off the flange hole 92, and also avoid the blocking member 21 from being in an accidental adjustment state, thereby improving the convenience and reliability of the operation of the hoisting device 100.

[0076] As an embodiment, the fixing member 13 can be a nut, which is sleeved on the hoisting core 20, thereby avoiding the hoisting core 20 from falling off the flange hole 92. In other embodiments, the fixing member 13 can also be a locking pin, which is arranged through the hoisting core 20, thereby also avoiding the hoisting core 20 from falling off the flange hole 92.

[0077] In the present embodiment, the lifting ring 11 and the fixing member 13 are a lifting ring nut 14, which has a simpler structure, reliable connection, and is convenient to use.

[0078] In the present embodiment, the hoisting core 20 is a cylindrical hoisting core as a whole, the lower end of the cylindrical hoisting core is provided with a receiving groove 23, the side wall of the receiving groove 23 is provided with a hole for mounting a pivot shaft 22. The blocking block 211 can rotate around the pivot shaft 22 in the receiving groove 23. Under the action of gravity, the blocking block 211 is in an inserted state, as shown in FIG. 4, the hoisting core 20 is conveniently inserted into the flange hole 92. As shown in FIG. 5, the blocking block 211 is transversely arranged, and the blocking block 211 abuts against the rear end surface 94 of the flange edge 91, thereby the hoisting device 100 is tightly fixed on the flange edge 91. Figure 7 Figure 8

[0079] As shown in FIG. 6, the sleeve pipe 121 is sleeved on the outside of the hoisting core 20, the sleeve pipe 121 is provided with a counterbore 122, and the outer circumferential surface of the hoisting core 20 is provided with a ring table 24. The ring table 24 can block the sleeve pipe 121 from accidentally falling off, and also improve the tightness of the cooperation between the two, reduce the assembly gap therebetween, and improve the stability and reliability of the hoisting device 100. Figure 5 The lifting ring nut 14 is screwed from the upper side of the hoisting core 20, the lower side surface of the lifting ring nut 14 can abut against the front end surface 93 of the flange edge 91, and the blocking block 211 can abut against the rear end surface 94 of the flange edge 91, thereby the hoisting device 100 is tightly fixed on the flange edge 91.

[0080] The blocking block 211 can rotate around the pivot shaft 22, and the center of gravity of the blocking block 211 is deviated to one side due to the non-uniform design of the blocking block 211. In the natural state, the blocking block 211 is in an inclined state, so that the diameter of the lower end of the hoisting core 20 of the hoisting device 100 is smaller than the hole diameter of the flange hole 92.

[0081]

[0082] ​​​The lifting device 100 is inserted into the flange hole 92 of the support cone wall 90. Under the action of the sleeve 121, the stopper 211 can be changed from the inclined state to the horizontal state, that is, from the inserted state to the blocking state, so that the stopper 211 is reversely hooked on the rear end surface 94 of the flange edge 91 of the support cone wall 90.

[0083] The lifting ring nut 14 is fixed on the lifting core 20 by screwing. After the lifting ring nut 14 is tightened, the lifting ring nut 14 and the stopper 211 form a clamping plate structure, so that the lifting device 100 is clamped on the front end surface 93 and the rear end surface 94 of the flange edge 91 of the support cone wall 90. Three lifting devices 100 are evenly installed in the circumferential direction, and after being connected with the universal three-jaw lifting device, the front end of the support cone wall 90 can be lifted, which is convenient for the inspection of the inner cavity of the support cone wall 90 or the remaining assembly operation.

[0084] The lifting core 20 is higher than the lifting ring nut 14, and the end of the lifting core 20 can be held by hand, so that the tightening and loosening of the lifting ring nut 14 is realized, and then the clamping of the lifting device 100 and the flange edge 91 of the support cone wall 90 is realized.

[0085] The lower end of the lifting core 20 is provided with a receiving groove 23, and the stopper 211 is fixed in the receiving groove 23 through a pivot shaft 22. The stopper 211 rotates around the pivot shaft 22, which can change the effective diameter of the stopper 211, and realize the installation of the lifting device 100 on the flange edge 91 of the support cone wall 90.

[0086] As a use method, the lifting device 100 can be installed according to the following steps.

[0087] The lifting core 20 with the stopper 211 is placed into the flange of the support cone wall 90. The sleeve 121 is installed, the stopper 211 is adjusted to the blocking state, and the rear end surface 94 of the flange edge 91 of the support cone wall 90 is reversely hooked. The lifting ring nut 14 is installed on the lifting core 20, and the lifting ring nut 14 is tightened, so that the lifting ring nut 14 and the stopper 211 clamp the flange edge 91 of the support cone wall 90.

[0088] According to the above step 3, the remaining two lifting devices 100 are installed to the flange hole 92 of the support cone wall 90 in an evenly distributed manner, as shown in Figure 2 The front end of the support cone wall 90 can be lifted by hooking the lifting ring nut 14 through the three-jaw lifting device, and then the related subsequent assembly and detection operations can be carried out.

[0089] If the lifting device 100 needs to be disassembled, the lifting ring nut 14 can be loosened and removed, the sleeve 121 is pulled out, and finally the lifting core 20 with the stopper 211 can be pulled out from the flange hole 92.

[0090] Although the specific embodiments of the present application have been described above, it is understood by those skilled in the art that the present application is only illustrated by way of example, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A hoisting device for supporting a conical wall (90), characterized in that, The hoisting device includes: A lifting core (20) is used to pass through the flange hole (92) of the flange edge (91) of the supporting cone wall (90). A blocking member (21) is pivotally mounted at the lower end of the lifting core (20). The blocking member (21) is a stop block (211), which is pivotally mounted at the lower end of the lifting core (20) via a pivot shaft (22). The weight of the stop block (211) on one side relative to the pivot shaft (22) is greater than the weight of the stop block (211) on the other side relative to the pivot shaft (22), so that the stop block (211) in its natural state can rotate around the pivot shaft (22) to pass through the flange hole (92). The insertion state through the flange hole (92); the stop (211) passing through the flange hole (92) can be switched from the insertion state to the blocking state abutting the rear end face (94) of the flange edge (91); wherein, the blocking member (21) in the blocking state has its length direction perpendicular to the length direction of the lifting core (20); the blocking member (21) in the insertion state has its length direction inclined relative to the length direction of the lifting core (20) and the length direction of the blocking member (21) in the blocking state, and the blocking member (21) in the insertion state has a portion extending into the lifting core (20); A switching element (12) is capable of acting on the portion of the blocking element (21) in the insertion state that extends into the lifting core (20), and the switching element (12) is used to switch the blocking element (21) to a blocking state; A lifting ring (11) is connected to the upper end of the lifting core (20) and is used to connect a lifting hook.

2. The hoisting device for supporting the conical wall (90) as described in claim 1, characterized in that, The end of the stop (211) relative to one side of the pivot (22) is provided with a chamfer (212); Alternatively, the end of the stop (211) on one side relative to the pivot (22) is provided with a weight-reducing hole; Alternatively, the stop (211) may have a counterweight at one end relative to the pivot (22).

3. The hoisting device for supporting the conical wall (90) as described in claim 1, characterized in that, The switching component (12) is a sleeve (121), which is sleeved on the lifting core (20). The lower end of the sleeve (121) is pressed against the blocking component (21) so that the blocking component (21) is switched to the blocking state.

4. The hoisting device for supporting the conical wall (90) as described in claim 3, characterized in that, The outer circumferential surface of the sleeve (121) is in contact with the inner circumferential surface of the flange hole (92); And / or, the length of the blocking member (21) is greater than the diameter of the sleeve (121).

5. The hoisting device for supporting the conical wall (90) as described in claim 1, characterized in that, The switching element (12) is an elastic element, which acts on the blocking element (21) to switch the blocking element (21) to a blocking state.

6. The hoisting device for supporting the conical wall (90) as described in any one of claims 1-5, characterized in that, The hoisting device also includes a fixing member (13), which is inserted into the hoisting core (20) from the upper end of the hoisting core (20). The lower end face of the fixing member (13) abuts against the front end face of the flange edge (91), and the lifting ring (11) is connected to the hoisting core (20) through the fixing member (13).

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