Auxiliary hoisting tool based on generator rotor magnetic pole and use method thereof

Abstract

The invention discloses an auxiliary hoisting tool based on a generator rotor magnetic pole and a using method thereof.The auxiliary hoisting tool comprises a supporting frame (1), a base (2) is arranged at one end of the supporting frame (1), a hoisting ring (3) is arranged at the other end of the supporting frame (1), and a limiting plate (4) and a plurality of pull rod assemblies are arranged in the middle of the supporting frame (1); the limiting plate (4) is used for abutting against a step surface of a rotor magnetic pole, and the pull rod assembly is used for being buckled in a long groove of the rotor magnetic pole and pulling the rotor magnetic pole along with rotation of the supporting frame (1); the pull rod assembly comprises a transverse pipe (5) detachably connected with the supporting frame (1), the transverse pipe (5) and the supporting frame (1) are connected through a connecting part (6), two pull rods (7) are arranged on the transverse pipe (5) side by side, and the ends of the pull rods (7) extend to the long grooves of the rotor magnetic poles and are connected with the rotor magnetic poles in a buckled mode. The device has the advantages of being convenient to operate, high in safety and small in occupied space.

Description

Technical Field

[0001] The invention relates to a hoisting tool for rotor magnetic poles, in particular to an auxiliary hoisting tool based on generator rotor magnetic poles and a use method thereof. Background Art

[0002] During the assembly process of the generator of the pumped storage power station, the operating personnel need to use the lifting tools to lift the rotor poles into the installation shaft of the energy storage unit one by one and fix them. However, the problem encountered by the existing lifting tools in actual use is that the rotor poles need to be placed flat on the ground in an idle state, and the lifting tools cannot be directly installed on the rotor poles in this state due to their weight and lifting action limitations. As a result, the operating personnel need to lift the rotor poles to a vertical state first, and then install the lifting tools to the outside of the rotor poles and complete the assembly. The above-mentioned assembly action not only needs to be implemented by the cooperation of multiple hoists, which makes it easy for different hoists to interfere with each other and cause obstacles during the use of cooperation, but also because the rotor poles need to be in a suspended state for a long time during operation, it is also easy to deviate and fall, which poses a great safety hazard.

[0003] On the other hand, the currently commonly used lifting tools will inevitably occupy the space of the rotor poles in the thickness direction, and need to enter the installation shaft together with the rotor poles during the lifting process; this means that when the installation shaft of some energy storage units is restricted by the layout and it is impossible to reserve a width space for the lifting tools to extend into, the manufacturer cannot use the lifting tool to lift the rotor poles, thereby reducing the applicability of the lifting tool and increasing the operating difficulty for the operator.

[0004] Therefore, the existing method of hoisting the rotor poles has the problems of great difficulty in operation, low safety and large space occupation. Summary of the invention

[0005] The purpose of the present invention is to provide an auxiliary lifting tool based on the magnetic pole of the generator rotor and a method for using the tool, which has the characteristics of convenient operation, high safety and small space occupation.

[0006] The technical solution of the present invention: an auxiliary lifting tool based on the generator rotor pole, including a support frame, a base is provided at one end of the support frame, a lifting ring is provided at the other end of the support frame, and a limit plate and a plurality of pull rod assemblies are respectively provided in the middle of the support frame, the limit plate is used to abut against the step surface of the rotor pole, and the pull rod assembly is used to be buckled in the long groove of the rotor pole and pull the rotor pole as the support frame rotates; the pull rod assembly includes a transverse tube detachably connected to the support frame, the transverse tube and the support frame are connected to each other via a connecting part, two pull rods are arranged side by side on the transverse tube, and the ends of the pull rods extend to the long groove of the rotor pole and are buckled and connected to the rotor pole.

[0007] In the aforementioned auxiliary lifting tool based on the generator rotor pole, the support frame includes two vertical rods arranged side by side, the vertical rods are connected to each other via a plurality of reinforcing ribs, and the base and the limit plate are welded to the support frame.

[0008] In the aforementioned auxiliary lifting tool based on the generator rotor pole, the horizontal tube is located at the interval between the two vertical rods, and both ends of the horizontal tube are threadedly connected to the connecting part, and the end of the connecting part passes through the vertical rod to form a cover plate.

[0009] In the aforementioned auxiliary lifting tool based on the generator rotor pole, an installation gap is formed between the base and the end face of the rotor pole, and a slot is provided on the base on one side of the installation gap, in which a pulley block is snap-connected, and the pulley block is used to slide the lower hanger into the installation gap.

[0010] In the aforementioned auxiliary lifting tool based on the generator rotor pole, the pulley block includes two pulley plates arranged side by side, one end of the pulley plate extends to the outside of the base, and a plurality of rollers are arranged side by side on the pulley plate.

[0011] In the aforementioned auxiliary lifting tool based on the generator rotor pole, a sleeve is provided on one side of the cross tube, and the pull rod and the sleeve are nested inside and outside. One end of the pull rod passes through the pull rod and is connected to a T-shaped clamping joint, and the other end of the pull rod passes through the cross tube and is threadedly connected to a clamping nut. The middle parts of the pull rod and the sleeve are connected to each other via a pin.

[0012] The aforementioned auxiliary lifting tool based on the generator rotor pole also includes a first strap detachably connected to the support frame, and the first strap is used to support and fix the support frame on the heavy facility.

[0013] The aforementioned auxiliary lifting tool based on the generator rotor pole also includes a lifting mechanism for lifting the rotor pole, the lifting mechanism includes an upper hanger and a lower hanger, and the two ends of the upper hanger and the lower hanger form a mounting part, the mounting parts of the upper hanger and the lower hanger are interconnected via a double-headed screw, the two ends of the double-headed screw extend to the outside of the mounting part and are connected to a fixing nut, and an installation cavity for accommodating the rotor pole is formed between the upper hanger, the lower hanger and the double-headed screw, and a plurality of second straps are distributed outside the installation cavity, and the second straps are used to bind the rotor pole and the double-headed screw to each other.

[0014] In the aforementioned auxiliary lifting tool based on the generator rotor pole, the mounting portion is snap-fitted and connected to the double-headed screw via a snap-fit ​​assembly, and the snap-fit ​​assembly includes a first snap-fit ​​opening located on the outside of the mounting portion, a clamping block is provided on the outside of the first snap-fit ​​opening, and a second snap-fit ​​opening is provided on the inside of the clamping block. The first snap-fit ​​opening and the second snap-fit ​​opening form a mounting groove for snap-fitting and connecting the double-headed screw after being enclosed, and one end of the clamping block is rotatably connected to the mounting portion via a pin shaft, and the clamping block and the mounting portion are connected to each other via a tension spring.

[0015] In the aforementioned auxiliary lifting tool based on the generator rotor pole, the number of the double-headed screws is four and they are symmetrically arranged on the mounting parts at both ends. The outside of each double-headed screw is connected to the locking assembly, and the two pin shafts on the same mounting part are buckled and connected with an L-shaped limit plate, which is used to limit the rotation of the clamp after buckling.

[0016] In the aforementioned auxiliary lifting tool based on the generator rotor pole, the end of the pin shaft forms a special-shaped limiting portion, and an annular rotation groove is formed on the pin shaft inside the limiting opening. One side of the limiting plate is provided with a socket that matches the limiting portion, and the other side of the limiting portion is in contact with the outer wall of the clamping block.

[0017] The method for using the auxiliary lifting tool based on the generator rotor poles mentioned above includes the following steps:

[0018] ① Place the support frame on top of the horizontal rotor pole, and make the limit plate fit the step surface of the rotor pole, while the base extends to the bottom of the rotor pole and contacts the ground;

[0019] ②Insert one end of the pull rod into the long slot of the rotor pole, and connect the other end of the pull rod to the support frame;

[0020] ③ Hoist one end of the support frame through the lifting ring so that the rotor pole and the support frame are rotated and lifted from the horizontal state to the vertical state, and then the rotor pole in the vertical state is lifted and limited by the cooperation of the limit plate and the pull rod;

[0021] ④ Install the lifting mechanism on the outside of the rotor pole, then release the connection between the pull rod and the rotor pole, and use the lifting device to lift the rotor pole from the support frame through the lifting mechanism.

[0022] Compared with the prior art, the present invention has the following characteristics:

[0023] (1) The present invention uses the structural coordination of the support frame, the pull rod assembly and the limit plate so that when in use, it can be first buckled and installed on the horizontal rotor pole, and then the step surface of the rotor pole is lifted and limited after being hoisted, and space is reserved for the installation of the upper hanger and the lower hanger, thereby avoiding the risk of the rotor pole falling during the rotating hoisting process on the one hand, and on the other hand, the installation of the hoisting tool can be completed in the non-hoisting state, that is, the safety of the overall action is improved; when the hoisting tool is installed, the operator can pull the pull rod out from the rotor pole, so that the operator can use the hoisting tool to lift the rotor pole in a conventional manner and complete the subsequent installation process, which is convenient for the operator's operation;

[0024] (2) Through the structural coordination of the pulley block and the base, the lower hanger can be first placed on the pulley plate outside the rotor pole by hoisting during installation, and then horizontally slid under the rotor pole to complete the installation. On the one hand, it can further reduce the installation difficulty of the operator, and on the other hand, the installation position of the lower hanger can also be fine-tuned as needed, thereby improving the installation efficiency of the hoisting tool;

[0025] (3) The connection structure between the sleeve and the pull rod allows the pull rod to be extended and rotated on the sleeve, so that the operator can first place the support frame as a whole on the top of the rotor pole, and then extend and rotate the pull rod to make it extend into the long slot and engage the rotor pole; when the lifting tool is installed, the operator can directly pull out the pull rod after rotating it, thereby improving the efficiency of unlocking the rotor pole and improving its operation convenience;

[0026] (4) On the basis of the above, the present invention limits the coordination of the hoisting mechanism so that the rotor poles can be bound and fixed after installation, thereby preventing the rotor poles from deflecting and falling off during the hoisting process, thereby improving the safety during the hoisting process; on the other hand, it can also reduce the space occupied by the hoisting mechanism in the thickness direction of the rotor poles, so that it can be smoothly inserted into a relatively narrow installation shaft, thereby improving the applicability of the hoisting mechanism;

[0027] (5) By defining the structure of the snap-fit ​​assembly, the double-headed screw can be horizontally inserted into the installation groove to achieve connection during installation. On this basis, through the coordinated setting of the pulley group, when installing the upper hanger and the lower hanger, the operator can first buckle the upper end of the double-headed screw in the upper hanger, and then adjust the buckling position of the lower end of the double-headed screw to slide and adjust the horizontal position of the lower hanger, so that the lower hanger can be buckled with the vertical double-headed screw after sliding into place, thus completing the rapid positioning of the upper hanger and the lower hanger and the installation of the double-headed screw, thereby improving the operating convenience of the operator;

[0028] Therefore, the present invention has the characteristics of convenient operation, high safety and small occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a front view of Example 1;

[0030] Figure 2 is an installation schematic diagram of Embodiment 1 before being hoisted to a vertical state;

[0031] Figure 3 is a schematic diagram of the installation of Embodiment 1 after being hoisted to a vertical state;

[0032] Figure 4 is a schematic diagram of the installation of Embodiment 2 after being hoisted to a vertical state;

[0033] Figure 5 is a schematic structural diagram of the tie rod assembly in Example 2;

[0034] Figure 6 is a front view of the lifting mechanism in Example 3;

[0035] Figure 7 yes Figure 6 A-axis view after the limiter is removed;

[0036] Figure 8 yes Figure 6 View in A direction after the limit piece is installed;

[0037] Fig. 9 It is a schematic diagram of the structure of Example 3 when the lifting mechanism is installed.

[0038] The marks in the accompanying drawings are: 1-support frame, 2-base, 3-lifting ring, 4-limiting plate, 5-horizontal tube, 6-connecting part, 7-pull rod, 8-pulley plate, 9-roller, 10-sleeve, 11-tightening nut, 12-pin, 13-first strap, 14-upper hanger, 15-lower hanger, 16-installing part, 17-stud screw, 18-second strap, 19-clamp block, 20-pin shaft, 21-tension spring, 22-limiting plate, 101-vertical rod, 102-reinforcement rib, 201-slot, 161-first snap-fitting mouth, 191-second snap-fitting mouth. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0040] Embodiment 1. An auxiliary lifting tool based on the generator rotor magnetic pole is constructed as follows Figure 1-3 As shown, it includes a support frame 1, one end of the support frame 1 is provided with a base 2, the other end of the support frame 1 is provided with a hanging ring 3, the middle part of the support frame 1 is respectively provided with a limit plate 4 and a plurality of pull rod assemblies, the limit plate 4 is used to abut against the step surface of the rotor pole, the pull rod assembly is used to be buckled in the long groove of the rotor pole and pull the rotor pole as the support frame 1 rotates; the pull rod assembly includes a transverse tube 5 detachably connected to the support frame 1, the transverse tube 5 and the support frame 1 are connected to each other via a connecting portion 6, two pull rods 7 are arranged side by side on the transverse tube 5, the ends of the pull rods 7 extend to the long groove of the rotor pole and are buckled and connected to the rotor pole, and the cross-sectional shape of the long groove is T-shaped.

[0041] The support frame 1 includes two vertical rods 101 arranged side by side. The vertical rods 101 are connected to each other via a plurality of reinforcing ribs 102 . The base 2 and the limiting plate 4 are both welded to the support frame 1 .

[0042] The transverse tube 5 is located at the interval between the two vertical rods 101 , and both ends of the transverse tube 5 are threadedly connected to the connecting portion 6 , and the end of the connecting portion 6 passes through the vertical rods 101 to form a cover plate.

[0043] An installation gap is formed between the base 2 and the end surface of the rotor pole. A slot 201 is provided on the base 2 on one side of the installation gap. A pulley block is buckled in the slot 201. The pulley block is used to slide the lower hanger into the installation gap.

[0044] The pulley block includes two pulley plates 8 arranged side by side, one end of the pulley plate 8 extends to the outside of the base 2, and a plurality of rollers 9 are arranged side by side on the pulley plate 8.

[0045] It also includes a first strap 13 detachably connected to the support frame 1 , and the first strap 13 is used to push the support frame 1 against and fix it on the heavy equipment.

[0046] When using this embodiment, the operator first hoists the support frame 1 to the top of the rotor pole, and makes the limit plate 4 and the step surface of the rotor pole fit each other, and the base 2 extends to the outside of the rotor pole and fits each other with the ground. After the support frame 1 is placed, the operator extends the pull rod assembly from the side of the rotor pole away from the base 2, so that the pull rod 7 and the long groove of the rotor pole are mutually engaged and moved laterally to the connection position and connected to the support frame 1 through the connection part 6, so that the cooperation of the limit plate 4 and the pull rod 7 can keep the rotor pole in a limited state relative to the support frame 1.

[0047] After the tie rod assembly is installed, the operator lifts the support frame 1 from the horizontal to the vertical state through the cooperation of the lifting ring 3 and the lifting device, and places the support frame 1 against the facade of the heavy facility, so as to limit the support frame 1 by using the heavy facility and the first binding strap 13 to prevent the support frame 1 from tipping over together with the rotor pole during subsequent operations. In the vertical state, the support frame 1 can limit the rotor pole through the limiting plate 4 and the pull rod 7, so that the rotor pole remains in a vertical state in this state, and space is reserved for the installation of the lifting mechanism. Then the operator can remove the lifting device from the lifting ring 3 and lift the lifting mechanism to the desired installation position. When installing the lower hanger, the operator can first insert the pulley plate 8 into the slot 201, and then slide the corresponding workpiece directly below the rotor pole and install it.

[0048] After the installation of the lifting mechanism is completed, the operator unscrews the connection part 6 and slides the pull rod 7 out from the rotor pole to release the limit on the rotor pole, so that the lifting device can lift the rotor pole from the support frame 1 through the lifting mechanism and perform subsequent installation in a conventional manner.

[0049] Embodiment 2. An auxiliary lifting tool based on the generator rotor magnetic pole is constructed as follows Figure 4-5As shown, it includes a support frame 1, one end of the support frame 1 is provided with a base 2, the other end of the support frame 1 is provided with a hanging ring 3, the middle part of the support frame 1 is respectively provided with a limit plate 4 and a plurality of pull rod assemblies, the limit plate 4 is used to abut against the step surface of the rotor pole, the pull rod assembly is used to be buckled in the long groove of the rotor pole and pull the rotor pole as the support frame 1 rotates; the pull rod assembly includes a transverse tube 5 detachably connected to the support frame 1, the transverse tube 5 and the support frame 1 are hinged to each other via a connecting portion 6, two pull rods 7 are arranged side by side on the transverse tube 5, the ends of the pull rods 7 extend to the long groove of the rotor pole and are buckled and connected to the rotor pole, and the cross-sectional shape of the long groove is T-shaped.

[0050] The support frame 1 includes two vertical rods 101 arranged side by side. The vertical rods 101 are connected to each other via a plurality of reinforcing ribs 102 . The base 2 and the limiting plate 4 are both welded to the support frame 1 .

[0051] The transverse tube 5 is located at the interval between the two vertical rods 101 , and both ends of the transverse tube 5 are threadedly connected to the connecting portion 6 , and the end of the connecting portion 6 passes through the vertical rods 101 to form a cover plate.

[0052] An installation gap is formed between the base 2 and the end surface of the rotor pole. A slot 201 is provided on the base 2 on one side of the installation gap. A pulley block is buckled in the slot 201. The pulley block is used to slide the lower hanger into the installation gap.

[0053] The pulley block includes two pulley plates 8 arranged side by side, one end of the pulley plate 8 extends to the outside of the base 2, and a plurality of rollers 9 are arranged side by side on the pulley plate 8.

[0054] A sleeve 10 is provided on one side of the transverse tube 5, and the pull rod 7 and the sleeve 10 are nested inside and outside. One end of the pull rod 7 passes through the pull rod 7 and is connected with a T-shaped clamping joint, and the other end of the pull rod 7 passes through the transverse tube 5 and is threadedly connected with a tightening nut 11. The middle parts of the pull rod 7 and the sleeve 10 are connected to each other through a pin 12; the pin 12 can be a screw rod, and the end of the screw rod is connected to a nut for fixing after passing through the pull rod 7 and the sleeve 10.

[0055] Compared with Example 1, this embodiment further defines the structure of the tie rod assembly, so that the tie rod assembly can be loaded and unloaded separately during use, thereby improving the operating efficiency of the operator. When the support frame 1 is placed, the tie rod assembly is first placed on the top of the rotor pole together with the support frame 1, and then the operator rotates the tie rod 7 to extend it into the long slot of the rotor pole, and then rotates the tie rod 7 again to engage it with the long slot, and fix it with the latch 12. After the tie rod 7 is engaged, the operator screws in the tightening nut 11 to tighten the tie rod 7, so that the tie rod 7 can be completely fitted with the inner wall surface of the long slot in this state, thereby achieving the installation of the tie rod 7.

[0056] When the lifting mechanism is installed to the outside of the rotor pole, the operator can unlock the pull rod 7 in the same way and rotate it to pull it out, thereby releasing the limit on the rotor pole.

[0057] Embodiment 3. An auxiliary lifting tool based on the generator rotor magnetic pole is constructed as follows Figure 6-9 As shown, it includes a support frame 1, one end of the support frame 1 is provided with a base 2, the other end of the support frame 1 is provided with a hanging ring 3, the middle part of the support frame 1 is respectively provided with a limit plate 4 and a plurality of pull rod assemblies, the limit plate 4 is used to abut against the step surface of the rotor pole, the pull rod assembly is used to be buckled in the long groove of the rotor pole and pull the rotor pole as the support frame 1 rotates; the pull rod assembly includes a transverse tube 5 detachably connected to the support frame 1, the transverse tube 5 and the support frame 1 are hinged to each other via a connecting portion 6, two pull rods 7 are arranged side by side on the transverse tube 5, the ends of the pull rods 7 extend to the long groove of the rotor pole and are buckled and connected to the rotor pole, and the cross-sectional shape of the long groove is T-shaped.

[0058] The support frame 1 includes two vertical rods 101 arranged side by side. The vertical rods 101 are connected to each other via a plurality of reinforcing ribs 102 . The base 2 and the limiting plate 4 are both welded to the support frame 1 .

[0059] The transverse tube 5 is located at the interval between the two vertical rods 101 , and both ends of the transverse tube 5 are threadedly connected to the connecting portion 6 , and the end of the connecting portion 6 passes through the vertical rods 101 to form a cover plate.

[0060] An installation gap is formed between the base 2 and the end surface of the rotor pole. A slot 201 is provided on the base 2 on one side of the installation gap. A pulley block is buckled in the slot 201. The pulley block is used to slide the lower hanger into the installation gap.

[0061] The pulley block includes two pulley plates 8 arranged side by side, one end of the pulley plate 8 extends to the outside of the base 2, and a plurality of rollers 9 are arranged side by side on the pulley plate 8.

[0062] A sleeve 10 is provided on one side of the transverse tube 5, and the pull rod 7 and the sleeve 10 are nested inside and outside. One end of the pull rod 7 passes through the pull rod 7 and is connected with a T-shaped clamping joint, and the other end of the pull rod 7 passes through the transverse tube 5 and is threadedly connected with a tightening nut 11. The middle parts of the pull rod 7 and the sleeve 10 are connected to each other through a pin 12; the pin 12 can be a screw rod, and the end of the screw rod is connected to a nut for fixing after passing through the pull rod 7 and the sleeve 10.

[0063] It also includes a lifting mechanism for lifting the rotor poles, the lifting mechanism includes an upper hanger 14 and a lower hanger 15, both ends of the upper hanger 14 and the lower hanger 15 form a mounting portion 16, the mounting portions 16 of the upper hanger 14 and the lower hanger 15 are interconnected via a double-headed screw 17, both ends of the double-headed screw 17 extend to the outside of the mounting portion 16 and are connected to fixing nuts, a mounting cavity for accommodating the rotor poles is formed between the upper hanger 14, the lower hanger 15 and the double-headed screw 17, a plurality of second straps 18 are distributed outside the mounting cavity, and the second straps 18 are used to bind the rotor poles and the double-headed screw 17 to each other.

[0064] The mounting portion 16 is snap-fitted to the stud screw 17 via a snap-fit ​​assembly, and the snap-fit ​​assembly includes a first snap-fit ​​opening 161 located on the outside of the mounting portion 16, a clamping block 19 is provided on the outside of the first snap-fit ​​opening 161, and a second snap-fit ​​opening 191 is provided on the inside of the clamping block 19. The first snap-fit ​​opening 161 and the second snap-fit ​​opening 191 form a mounting groove for snap-fitting the stud screw 17 after being enclosed. One end of the clamping block 19 is rotatably connected to the mounting portion 16 via a pin 20, and the clamping block 19 and the mounting portion 16 are connected to each other via a tension spring 21.

[0065] There are four double-headed screws 17 and they are symmetrically arranged on the mounting parts 16 at both ends. The outside of each double-headed screw 17 is connected to a snap-fit ​​assembly. An L-shaped limit plate 22 is snap-fitted and connected between the two pin shafts 20 on the same mounting part 16 of the upper hanger 14. The limit plate 22 is used to limit the rotation of the clamping block 19 after snapping.

[0066] The method for using the auxiliary lifting tool based on the generator rotor magnetic pole comprises the following steps:

[0067] ① Place the support frame on top of the horizontal rotor pole, and make the limit plate fit the step surface of the rotor pole, while the base extends to the bottom of the rotor pole and contacts the ground;

[0068] ②Insert one end of the pull rod into the long slot of the rotor pole, and connect the other end of the pull rod to the support frame;

[0069] ③ Hoist one end of the support frame through the lifting ring so that the rotor pole and the support frame are rotated and lifted from the horizontal state to the vertical state, and then the rotor pole in the vertical state is lifted and limited by the cooperation of the limit plate and the pull rod;

[0070] ④ Install the lifting mechanism on the outside of the rotor pole, then release the connection between the pull rod and the rotor pole, and use the lifting device to lift the rotor pole from the support frame through the lifting mechanism.

[0071] Compared with Example 2, this embodiment limits the structure of the lifting mechanism so that it can cooperate with the support frame 1, thereby enabling operators to quickly install the lifting mechanism and reducing the space occupied by the lifting mechanism in the thickness direction of the rotor pole after installation.

[0072] When the rotor poles rotate to a vertical state with the support frame 1, the operator installs the upper hanger 14 and the lower hanger 15 on the upper and lower sides of the rotor poles, and connects the mounting parts 16 at both ends of the upper hanger 14 and the lower hanger 15 to each other through the double-headed screw 17. When installing the double-headed screw 17, the operator first buckles the upper end of the double-headed screw 17 into the clamping block 19 of the upper hanger 14, so that the clamping block 19 overcomes the tension of the tension spring 21 under the extrusion action and opens outward. After the clamping block 19 rotates and opens, the double-headed screw 17 is pressed between the first snap-fitting opening 161 and the second snap-fitting opening 191, and then the clamping block 19 rotates and contracts and uses the cooperation of the first snap-fitting opening 161 and the second snap-fitting opening 191 to press the double-headed screw 17 to achieve the snap-fit ​​function. After the upper end of the stud screw 17 is buckled, the operator slides the lower hanger 15 horizontally according to the lower end position of the stud screw 17, so that the lower end of the stud screw 17 is buckled into the clamping assembly of the lower hanger 15 in a vertical state. After the stud screw 17 is buckled, the operator uses a jack to lift the lower hanger 15 so that it fits the bottom surface of the rotor pole, and finally tightens the fixing nuts at both ends, thereby limiting the upper hanger 14 and the lower hanger 15 by the cooperation of the stud screw 17 and the fixing nuts, so that the upper hanger 14 and the lower hanger 15 can press the rotor pole after installation.

[0073] After the stud screw 17 is installed, the operator inserts the limit plate 22 vertically from the outside of the pin shaft 20 to limit the rotation of the clamp block 19 to prevent the clamp block 19 from opening during the rotor pole hoisting process, that is, to ensure the buckling effect of the stud screw 17. After the limit plate 22 is installed, the operator then ties a plurality of second binding straps 18 to the outside of the rotor pole and the stud screw 17 respectively, so as to use the second binding straps 18 to bind the rotor pole and the hoisting tool to each other to prevent the rotor pole from tipping over during the subsequent hoisting process.

[0074] After the second binding band 18 is tied, the operator can rotate and pull out the pull rod 7 from the rotor pole, and then control the crane to lift the rotor pole together with the lifting mechanism, and lift it into the installation shaft of the generator in a conventional manner. When the rotor pole is lifted and interlocked with the generator, the operator gradually releases the second binding band 18 tied to the rotor pole as the rotor pole is inserted, until the rotor pole is completely interlocked with the generator.

Claims

1. Auxiliary lifting tool based on generator rotor pole, characterized by: The invention comprises a support frame (1), wherein one end of the support frame (1) is provided with a base (2), the other end of the support frame (1) is provided with a lifting ring (3), and the middle part of the support frame (1) is provided with a limit plate (4) and a plurality of pull rod assemblies, wherein the limit plate (4) is used to abut against the step surface of the rotor pole, and the pull rod assembly is used to be buckled in the long groove of the rotor pole and pull the rotor pole as the support frame (1) rotates; the pull rod assembly comprises a transverse tube (5) detachably connected to the support frame (1), the transverse tube (5) and the support frame (1) are connected to each other via a connecting part (6), and two pull rods (7) are arranged side by side on the transverse tube (5), and the ends of the pull rods (7) extend to the long groove of the rotor pole and are buckled and connected to the rotor pole.

2. The auxiliary lifting tool based on the generator rotor pole according to claim 1 is characterized in that: The support frame (1) comprises two vertical rods (101) arranged side by side, the vertical rods (101) are connected to each other via a plurality of reinforcing ribs (102), and the base (2) and the limiting plate (4) are both welded to the support frame (1).

3. The auxiliary lifting tool based on the generator rotor pole according to claim 2 is characterized in that: The horizontal tube (5) is located at the interval between the two vertical rods (101), and both ends of the horizontal tube (5) are threadedly connected to the connecting part (6), and the end of the connecting part (6) passes through the vertical rod (101) to form a cover plate.

4. The auxiliary lifting tool based on the generator rotor pole according to claim 1 is characterized in that: An installation gap is formed between the base (2) and the end surface of the rotor magnetic pole, and a slot (201) is provided on the base (2) on one side of the installation gap. A pulley block is buckled and connected in the slot (201), and the pulley block is used to slide the lower hanger into the installation gap.

5. The auxiliary lifting tool based on the generator rotor pole according to claim 4 is characterized in that: The pulley block comprises two pulley plates (8) arranged side by side, one end of the pulley plate (8) extends to the outside of the base (2), and a plurality of rollers (9) are arranged side by side on the pulley plate (8).

6. The auxiliary lifting tool based on the generator rotor pole according to claim 1 is characterized in that: A sleeve (10) is provided on one side of the transverse tube (5), and the pull rod (7) and the sleeve (10) are nested inside and outside. One end of the pull rod (7) passes through the pull rod (7) and is connected to a T-shaped clamping joint, and the other end of the pull rod (7) passes through the transverse tube (5) and is threadedly connected to a tightening nut (11). The middle parts of the pull rod (7) and the sleeve (10) are connected to each other via a pin (12).

7. The auxiliary lifting tool based on the generator rotor pole according to claim 1 is characterized in that: It also comprises a first binding belt (13) detachably connected to the support frame (1), and the first binding belt (13) is used to place the support frame (1) against and fix it on a heavy facility.

8. The auxiliary lifting tool based on the generator rotor pole according to claim 1 is characterized in that: The invention also includes a hoisting mechanism for hoisting the rotor magnetic poles, wherein the hoisting mechanism includes an upper hanger (14) and a lower hanger (15), and mounting portions (16) are formed at both ends of the upper hanger (14) and the lower hanger (15). The mounting portions (16) of the upper hanger (14) and the lower hanger (15) are connected to each other via a double-headed screw (17), and both ends of the double-headed screw (17) extend to the outside of the mounting portion (16) and are connected to fixing nuts. A mounting cavity for accommodating the rotor magnetic poles is formed between the upper hanger (14), the lower hanger (15) and the double-headed screw (17), and a plurality of second binding straps (18) are distributed outside the mounting cavity. The second binding straps (18) are used to bind the rotor magnetic poles and the double-headed screw (17) to each other.

9. The auxiliary lifting tool based on the generator rotor pole according to claim 8, characterized in that: The mounting portion (16) is snap-fitted to the stud screw (17) via a snap-fit ​​assembly, the snap-fit ​​assembly comprising a first snap-fit ​​opening (161) located outside the mounting portion (16), a clamping block (19) is provided on the outside of the first snap-fit ​​opening (161), a second snap-fit ​​opening (191) is provided on the inside of the clamping block (19), the first snap-fit ​​opening (161) and the second snap-fit ​​opening (191) are enclosed to form a mounting groove for snap-fitting the stud screw (17), one end of the clamping block (19) is rotatably connected to the mounting portion (16) via a pin shaft (20), and the clamping block (19) and the mounting portion (16) are connected to each other via a tension spring (21).

10. A method for using the auxiliary lifting tool based on the generator rotor pole according to any one of claims 1 to 9, characterized in that: The following steps are involved: ① Place the support frame on top of the horizontal rotor pole, and make the limit plate fit the step surface of the rotor pole, while the base extends to the bottom of the rotor pole and contacts the ground; ②Insert one end of the pull rod into the long slot of the rotor pole, and connect the other end of the pull rod to the support frame; ③ Hoist one end of the support frame through the lifting ring so that the rotor pole and the support frame are rotated and lifted from the horizontal state to the vertical state, and then the rotor pole in the vertical state is lifted and limited by the cooperation of the limit plate and the pull rod; ④ Install the lifting mechanism on the outside of the rotor pole, then release the connection between the pull rod and the rotor pole, and use the lifting device to lift the rotor pole from the support frame through the lifting mechanism.

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