Magnetic pole mounting mechanism for generator rotor

Abstract

The utility model discloses a magnetic pole mounting mechanism for a generator rotor, which comprises an upper hanging bracket (1) and a lower hanging bracket (2), mounting parts (3) are formed at two ends of the upper hanging bracket (1) and the lower hanging bracket (2), the mounting parts (3) of the upper hanging bracket (1) and the lower hanging bracket (2) are connected with each other through a double-thread screw (4), and two ends of the double-thread screw (4) extend to the outer sides of the mounting parts (3) and are connected with fixing nuts. A mounting cavity for accommodating a rotor magnetic pole is formed among the upper hanging bracket (1), the lower hanging bracket (2) and the double-thread screw (4), and a plurality of first bandages (5) are distributed outside the mounting cavity and are used for mutually binding the rotor magnetic pole and the double-thread screw (4); and the mounting part (3) is buckled and connected with a double-thread screw (4) through a clamping assembly. The device has the advantages of being small in occupied space, convenient to operate and high in safety.

Description

Technical Field

[0001] The utility model relates to a hanger, in particular to a magnetic pole mounting mechanism for a generator rotor. Background Art

[0002] During the assembly of a pumped-storage power station generator, workers are required to sequentially hoist the rotor poles into the installation shaft of the energy storage unit and secure them. Based on this, existing hoisting tools for rotor poles, such as those shown in Patent 202322879011.9, include lifting claws and supporting claws, respectively, located on the upper and lower sides of the rotor poles. After installation, the lifting claws and supporting claws engage the two ends of the rotor poles and are connected to each other via screws on both sides. This allows the rotor poles to be lifted and limited during the hoisting process, preventing them from deviating from the hoisting tool and falling off.

[0003] However, the drawback of this lifting tool is that, due to the extremely narrow installation shaft space of some generators, only installation space for the vertical insertion of the rotor poles can be reserved. The claw plate structure in the above-mentioned lifting tool will inevitably cause it to occupy space in the width direction and need to be inserted into the installation shaft together with the rotor poles during lifting. As a result, the lifting tool often interferes with external equipment during use, which reduces the scope of application of the lifting tool. On the other hand, due to the relatively large weight of the lifting claw card and the supporting claw card, the manufacturer needs to use a hoist to move the lifting claw card and the supporting claw card into position when installing them. However, due to the limitation of the lateral movement of the hoist, it is difficult to achieve fine-tuning of the horizontal position of the lifting claw card and the supporting claw card, which causes the lifting claw card and the supporting claw card to be unable to be fully aligned after movement. When there is a position deviation between the lifting claw card and the supporting claw card, it will cause the connection holes of the two to be misaligned, and thus the two ends of the screw cannot be smoothly inserted into the lifting claw card and the supporting claw card. Under the above limitations, current manufacturers need to constantly repeat the action of "moving the lifting claw card - inserting the screw - pulling out the screw - moving the lifting claw card" when installing the screw, thereby increasing the difficulty of installing the lifting tool.

[0004] Furthermore, since the rotor poles need to be placed flat on the ground when idle, and the aforementioned lifting tools are limited by their weight and lifting action and cannot be directly installed on the flat rotor poles, the operator must first lift the rotor poles to a vertical position, and then move the lifting claws and supporting claws to the upper and lower sides of the rotor poles to complete the assembly. This lifting action not only requires the coordination of multiple lifting tools, resulting in interference and obstruction between different lifting tools during use, but also because the rotor poles need to remain suspended for a long time during operation, they are prone to drifting and falling, posing a significant safety hazard.

[0005] Therefore, existing lifting tools for rotor poles have the problems of occupying a large space, being difficult to operate and having low safety. Utility Model Content

[0006] The purpose of the utility model is to provide a magnetic pole mounting mechanism for a generator rotor, which has the characteristics of small space occupation, convenient operation and high safety.

[0007] The technical solution of the present invention is as follows: a magnetic pole mounting mechanism for a generator rotor, comprising an upper hanger and a lower hanger, wherein both ends of the upper hanger and the lower hanger form a mounting portion, and the mounting portions of the upper hanger and the lower hanger are connected to each other via a double-headed screw, and both ends of the double-headed screw extend to the outside of the mounting portion and are connected to a fixing nut, and a mounting cavity for accommodating the rotor pole is formed between the upper hanger, the lower hanger and the double-headed screw, and a plurality of first straps are distributed outside the mounting cavity, and the first straps are used to bundle the rotor pole and the double-headed screw together; the mounting portion is fastened to the double-headed screw through a clamping assembly, and the clamping assembly includes a first clamping opening located on the outside of the mounting portion, a clamping block is provided on the outside of the first clamping opening, and a second clamping opening is provided on the inside of the clamping block, and the first clamping opening and the second clamping opening form a mounting groove for fastening and connecting the double-headed screw after being enclosed, and one end of the clamping block is rotated to connect 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.

[0008] In the aforementioned magnetic pole mounting mechanism for a generator rotor, the clamping block forms an extrusion opening for matching the double-headed screw at the end away from the pin shaft.

[0009] In the aforementioned magnetic pole mounting mechanism for a generator rotor, 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 a locking assembly, and an L-shaped limit plate is fastened between the two pin shafts on the same mounting part. The limit plate is used to limit the rotation of the clamp after fastening.

[0010] In the aforementioned magnetic pole mounting mechanism for a generator rotor, an irregularly shaped limiting portion is formed at the end of the pin shaft, 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.

[0011] The aforementioned generator rotor magnetic pole mounting mechanism also includes a support assembly for supporting the rotor magnetic pole in a vertical state, and an operating opening for the upper hanger, lower hanger, double-headed screw and first strap to extend into is formed between the support assembly and the rotor magnetic pole.

[0012] In the aforementioned pole mounting mechanism for a generator rotor, the support assembly includes a support frame, a base is provided at one end of the support frame, a hanging 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 into the long slot of the rotor pole and to pull the rotor pole as the support frame rotates; the pull rod assembly includes a cross tube that is detachably connected to the support frame, and the cross tube and the support frame are connected to each other via a connecting part. Two pull rods are provided side by side on the cross tube, and the ends of the pull rods extend to the long slot of the rotor pole and are buckled and connected to the rotor pole.

[0013] In the aforementioned magnetic pole mounting mechanism for a generator rotor, the support frame includes two vertical rods arranged side by side, the vertical rods are connected to each other via a number of reinforcing ribs, and the base and the limit plate are both welded to the support frame.

[0014] In the aforementioned magnetic pole mounting mechanism for a generator rotor, the horizontal tube is located at the interval between the two vertical rods, both ends of the horizontal tube are threadedly connected to the connecting portion, and the end of the connecting portion passes through the vertical rods to form a cover plate.

[0015] In the aforementioned magnetic pole mounting mechanism for a generator rotor, an installation gap is formed between the base and the end face of the rotor magnetic pole. A slot is provided on the base on one side of the installation gap, and a pulley set is snap-connected in the slot. The pulley set is used to slide the lower hanger into the installation gap.

[0016] In the aforementioned magnetic pole mounting mechanism for a generator rotor, 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.

[0017] In the aforementioned magnetic pole mounting mechanism for a generator rotor, a sleeve is provided on one side of the transverse 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 transverse tube and is threadedly connected to a tightening nut. The middle parts of the pull rod and the sleeve are connected to each other via a pin.

[0018] The aforementioned magnetic pole mounting mechanism for a generator rotor further includes a second strap detachably connected to the support frame, and the second strap is used to prop the support frame against and fix it on the heavy equipment.

[0019] Compared with the prior art, the present invention has the following features:

[0020] (1) The present invention can bind and fix the rotor poles after installation through the structural coordination of the double-headed screw and the first binding strap, thereby preventing the rotor poles from deflecting and falling off during the hoisting process, thereby improving the safety of the present invention during the hoisting process; by limiting the structure of the engaging assembly, the double-headed screw can be horizontally inserted into the installation slot to achieve connection during installation, that is, compared with the existing connection method of the double-headed screw, the operation difficulty of the operator is effectively reduced;

[0021] (2) By cooperating with the connection structure of the limit plate and the pin shaft, the limit plate can limit the rotation of the clamping block after installation, thereby ensuring the fixing effect of the clamping assembly on the double-headed screw during the lifting process;

[0022] (3) Through the setting of the support assembly, the rotor pole can be lifted before hoisting, thereby facilitating the installation of the lifting tool by the operator; on this basis, through the structural limitation of the support assembly, it can be first buckled on the horizontal rotor pole when in use, and then the step surface of the rotor pole can be lifted and limited after hoisting, and space can be 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 completing the installation of the lifting tool in the non-hoisting state on the other hand, that is, improving the safety of the overall action; when the lifting tool is installed, the operator can pull the pull rod out from the rotor pole, which is convenient for the operator's operation;

[0023] (4) Through the structural coordination of the pulley group and the locking assembly, when installing the upper hanger and the lower hanger, the operator can first buckle the upper end of the double-headed screw into 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 double-headed screw in the vertical state 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;

[0024] (5) 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;

[0025] Therefore, the utility model has the characteristics of small space occupation, convenient operation and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural diagram of Example 1;

[0027] Figure 2 yes Figure 1 A-axis view after removing the limit piece;

[0028] Figure 3 yes Figure 1 A-direction view after the limit piece is installed;

[0029] Figure 4 It is a schematic diagram of the structure of the limit piece and the pin shaft when plugged in;

[0030] Figure 5 It is a structural diagram of the limit piece and the pin shaft when they are engaged with each other;

[0031] Figure 6 is a front view of the support assembly in Example 2;

[0032] Figure 7 This is a schematic diagram of the installation of the support assembly before the rotor poles are lifted in Example 2;

[0033] Figure 8 is a schematic structural diagram of Example 2 when the rotor magnetic poles are in a vertical state;

[0034] Figure 9 is a schematic structural diagram of Example 3 when the rotor magnetic poles are in a vertical state;

[0035] Figure 10 It is a structural schematic diagram of the pull rod assembly in Example 3.

[0036] The marks in the accompanying drawings are: 1-upper hanger, 2-lower hanger, 3-installation part, 4-double-headed screw, 5-first strap, 6-pin, 7-first engaging opening, 8-clamp, 9-second engaging opening, 10-pin shaft, 11-tension spring, 12-extrusion opening, 13-limiting plate, 14-support frame, 15-base, 16-lifting ring, 17-limiting plate, 18-cross tube, 19-connecting part, 20-pull rod, 21-pulley plate, 22-roller, 23-sleeve, 24-tightening nut, 25-second strap, 101-limiting part, 102-rotation groove, 131-socket, 141-vertical rod, 142-reinforcement rib. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0038] Example 1. A magnetic pole mounting mechanism for a generator rotor, comprising: Figure 1-5As shown, it includes an upper hanger 1 and a lower hanger 2. The top of the upper hanger 1 is provided with a hook for connecting a hanger. The two ends of the upper hanger 1 and the lower hanger 2 form a mounting portion 3. The mounting portions 3 of the upper hanger 1 and the lower hanger 2 are connected to each other via a stud screw 4. The two ends of the stud screw 4 extend to the outside of the mounting portion 3 and are connected to a fixing nut. A mounting cavity for accommodating the rotor pole is formed between the upper hanger 1, the lower hanger 2 and the stud screw 4. A plurality of first straps 5 are distributed outside the mounting cavity. The first straps 5 are used to bind the rotor pole and the stud screw 4 to each other. The lower hanger 2, the double-headed screw 4 and the first binding strap 5 form a lifting tool after being installed to the outside of the rotor pole; the mounting portion 3 is fastened to the double-headed screw 4 through a snap-fit ​​assembly, and the snap-fit ​​assembly includes a first snap-fit ​​opening 7 located on the outside of the mounting portion 3, a clamping block 8 is provided on the outside of the first snap-fit ​​opening 7, and a second snap-fit ​​opening 9 is provided on the inside of the clamping block 8. The first snap-fit ​​opening 7 and the second snap-fit ​​opening 9 form a mounting groove for fastening and connecting the double-headed screw 4 after being enclosed. One end of the clamping block 8 is rotated to connect to the mounting portion 3 via the pin shaft 10, and the clamping block 8 and the mounting portion 3 are connected to each other via a tension spring 11.

[0039] The upper and lower sides of the clamping block 8 are fitted with the mounting portion 3 , so that the clamping block 8 is reinforced by the mounting portion 3 , thereby deforming the clamping block 8 under stress.

[0040] The clamping block 8 forms an extrusion opening 12 at one end away from the pin 10 to fit the double-headed screw 4 .

[0041] There are four double-headed screws 4 and they are symmetrically arranged on the mounting parts 3 at both ends. The outside of each double-headed screw 4 is connected to the locking assembly. The two pin shafts 10 on the same mounting part 3 are buckled and connected with an L-shaped limit plate 13. The limit plate 13 is used to limit the rotation of the clamping block 8 after buckling.

[0042] The end of the pin shaft 10 forms a special-shaped limiting portion 101, and an annular rotation groove 102 is formed on the pin shaft 10 inside the limiting opening. One side of the limiting piece 13 is provided with a socket 131 that matches the limiting portion 101, and the other side of the limiting portion 101 is in contact with the outer wall of the clamping block 8.

[0043] It also includes a support assembly for supporting the rotor poles in a vertical state, and an operating opening for the upper hanger 1, the lower hanger 2, the double-headed screw 4 and the first strap 5 to extend into is formed between the support assembly and the rotor poles.

[0044] When using this embodiment, the operator first lifts the rotor pole and places it on the support assembly, then installs the upper hanger 1 and the lower hanger 2 on the upper and lower sides of the rotor pole respectively, and connects the mounting parts 3 of the upper hanger 1 and the lower hanger 2 to each other through the double-headed screw 4. When installing the double-headed screw 4, the operator presses the double-headed screw 4 on the clamping block 8 through the extrusion port 12 from one side of the clamping block 8, so that the clamping block 8 overcomes the tension of the tension spring 11 and opens outward under the extrusion action. After the clamping block 8 rotates and opens, the double-headed screw 4 is subsequently pressed between the first engaging port 7 and the second engaging port 9, and then the clamping block 8 rotates and contracts and uses the cooperation of the first engaging port 7 and the second engaging port 9 to press the double-headed screw 4 to achieve the snap-fit ​​function. After the double-headed screw 4 is buckled, the operator screws in the fixing nuts from both ends of the double-headed screw 4, thereby using the cooperation of the double-headed screw 4 and the fixing nuts to limit the upper hanger 1 and the lower hanger 2, so that the upper hanger 1 and the lower hanger 2 can press the rotor poles after installation.

[0045] After the stud screw 4 is installed, the operator inserts the limiting piece 13 vertically from the outside of the pin shaft 10, so that the socket 131 on the limiting piece 13 passes through the limiting portion 101 and enters the rotation groove 102, and the inner wall of the limiting piece 13 fits with the clamping block 8. After the limiting piece 13 is inserted, the operator rotates the pin shaft 10 so that the limiting portion 101 rotates and partially overlaps with the limiting piece 13, thereby using the pin shaft 10 to limit the limiting piece 13 and prevent it from detaching. After installation, the limiting piece 13 can limit the rotation of the clamping block 8, preventing the clamping block 8 from opening during the rotor pole lifting process, that is, ensuring the buckling effect of the stud screw 4. After the limit plate 13 is installed, the operator will tie multiple first straps 5 to the outside of the rotor pole and the double-headed screw 4 respectively, so as to use the first straps 5 to bind the rotor pole and the lifting tool to each other to prevent the rotor pole from tipping over during the subsequent lifting process.

[0046] After the first binding strap 5 is attached, the operator can control the crane to lift the rotor poles, along with the lifting tool, and lower them into the generator installation shaft in the usual manner. When the rotor poles are hoisted until they interlock with the generator, the operator gradually loosens the first binding strap 5 as the rotor poles are inserted until the rotor poles are fully engaged with the generator.

[0047] Example 2. A magnetic pole mounting mechanism for a generator rotor, comprising: Figure 6-8As shown, it includes an upper hanger 1 and a lower hanger 2, and a mounting portion 3 is formed at both ends of the upper hanger 1 and the lower hanger 2. The mounting portions 3 of the upper hanger 1 and the lower hanger 2 are connected to each other through a double-headed screw 4. Both ends of the double-headed screw 4 extend to the outside of the mounting portion 3 and are connected with fixing nuts. A mounting cavity for accommodating the rotor poles is formed between the upper hanger 1, the lower hanger 2 and the double-headed screw 4. A plurality of first straps 5 are distributed outside the mounting cavity. The first straps 5 are used to bind the rotor poles and the double-headed screw 4 to each other; the mounting portion 3 is fastened to the double-headed screw 4 through a snap-fit ​​assembly, and the snap-fit ​​assembly includes a first snap-fitting opening 7 located on the outside of the mounting portion 3, a clamping block 8 is provided on the outside of the first snap-fitting opening 7, and a second snap-fitting opening 9 is provided on the inside of the clamping block 8. The first snap-fitting opening 7 and the second snap-fitting opening 9 form a mounting groove for fastening and connecting the double-headed screw 4 after being enclosed. One end of the clamping block 8 is rotated to connect to the mounting portion 3 through a pin shaft 10, and the clamping block 8 and the mounting portion 3 are connected to each other through a tension spring 11.

[0048] The clamping block 8 forms an extrusion opening 12 at one end away from the pin 10 to fit the double-headed screw 4 .

[0049] There are four double-headed screws 4 and they are symmetrically arranged on the mounting parts 3 at both ends. The outside of each double-headed screw 4 is connected to the locking assembly. The two pin shafts 10 on the same mounting part 3 are buckled and connected with an L-shaped limit plate 13. The limit plate 13 is used to limit the rotation of the clamping block 8 after buckling.

[0050] The end of the pin shaft 10 forms a special-shaped limiting portion 101, and an annular rotation groove 102 is formed on the pin shaft 10 inside the limiting opening. One side of the limiting piece 13 is provided with a socket 131 that matches the limiting portion 101, and the other side of the limiting portion 101 is in contact with the outer wall of the clamping block 8.

[0051] It also includes a support assembly for supporting the rotor poles in a vertical state, and an operating opening for the upper hanger 1, the lower hanger 2, the double-headed screw 4 and the first strap 5 to extend into is formed between the support assembly and the rotor poles.

[0052] The support assembly includes a support frame 14, one end of the support frame 14 is provided with a base 15, the other end of the support frame 14 is provided with a hanging ring 16, the middle of the support frame 14 is respectively provided with a limit plate 17 and a plurality of pull rod assemblies, the limit plate 17 is used to abut against the step surface of the rotor pole, the pull rod assembly is used to be buckled into the long slot of the rotor pole and to pull the rotor pole as the support frame 14 rotates; the pull rod assembly includes a transverse tube 18 that is detachably connected to the support frame 14, the transverse tube 18 and the support frame 14 are connected to each other via a connecting portion 19, two pull rods 20 are arranged side by side on the transverse tube 18, the ends of the pull rods 20 extend to the long slot of the rotor pole and are buckled and connected to the rotor pole, and the cross-sectional shape of the long slot is T-shaped.

[0053] The support frame 14 includes two vertical rods 141 arranged side by side. The vertical rods 141 are connected to each other via a plurality of reinforcing ribs 142 . The base 15 and the limiting plate 17 are both welded to the support frame 14 .

[0054] The transverse tube 18 is located at the interval between the two vertical rods 141 . Both ends of the transverse tube 18 are threadedly connected to the connecting portion 19 . The end of the connecting portion 19 passes through the vertical rods 141 to form a cover plate.

[0055] An installation gap is formed between the base 15 and the end face of the rotor pole. A slot is provided on the base 15 on one side of the installation gap. A pulley block is buckled in the slot. The pulley block is used to slide the lower hanger 2 into the installation gap.

[0056] The pulley assembly includes two pulley plates 21 arranged side by side. One end of the pulley plate 21 extends to the outside of the base 15. A plurality of rollers 22 are arranged side by side on the pulley plate 21.

[0057] The second strap 25 is detachably connected to the support frame 14 and is used to push the support frame 14 against and fix it on heavy equipment.

[0058] Compared to Example 1, this embodiment further defines the structure of the support assembly, allowing operators to first hoist the support frame 14 to the top of the horizontal rotor pole, aligning the limit plate 17 with the stepped surface of the rotor pole, and extending the base 15 to the outside of the rotor pole and aligning it with the ground. After the support frame 14 is placed, the operator inserts the pull rod assembly from the side of the rotor pole away from the base 15, engaging the pull rod 20 with the long slot of the rotor pole, and then moving it laterally to the connection position and connecting it to the support frame 14 through the connection portion 19. The cooperation between the limit plate 17 and the pull rod 20 allows the rotor pole to maintain a limited position relative to the support frame 14.

[0059] After the tie rod assembly is installed, the operator uses the lifting ring 16 and the sling to lift the support frame 14 from a horizontal position to a vertical position. The support frame 14 is then placed against the vertical surface of the heavy equipment. The heavy equipment and the second strap 25 then work together to restrain the support frame 14, preventing it and the rotor poles from tipping over during subsequent operations. In the vertical position, the support frame 14 can be restrained by the limiting plate 17 and the tie rod 20, keeping the rotor poles in the vertical position and leaving space for the installation of the upper hanger 1 and the lower hanger 2.

[0060] The operator can then remove the sling from the lifting ring 16 and sling the upper hanger 1 and the lower hanger 2 to the desired installation position. When installing the lower hanger 2, the operator can first insert the pulley plate 21 into the slot, and then slide the lower hanger 2 directly under the rotor pole and install it. During the installation of the double-headed screw 4, the operator can also first position the upper hanger 1, and then buckle the double-headed screw 4 into the snap-fit ​​assembly of the upper hanger 1 and the lower hanger 2 respectively, and slide the lower hanger 2 horizontally according to the buckling position of the double-headed screw 4, so that the double-headed screw 4 is buckled in a vertical state. After the double-headed screw 4 is buckled, the operator uses a jack to lift the lower hanger 2 so that it fits against the bottom surface of the rotor pole, thereby ensuring the squeezing and limiting effect of the upper hanger 1 and the lower hanger 2 on the rotor pole.

[0061] After the lifting tool is installed, the operator will tie part of the first strap 5 to the outside of the rotor pole and the double-headed screw 4, and slide the pull rod assembly above the first strap 5 out from the rotor pole, that is, release the limit of the support frame on the rotor pole, so that the lifting tool can lift the rotor pole from the support frame 14 through the lifting tool, and tie the remaining first strap 5 to the rotor pole to ensure its fixing effect with the lifting tool.

[0062] Example 3. A magnetic pole mounting mechanism for a generator rotor, comprising: Figure 9-10 As shown, it includes an upper hanger 1 and a lower hanger 2, and a mounting portion 3 is formed at both ends of the upper hanger 1 and the lower hanger 2. The mounting portions 3 of the upper hanger 1 and the lower hanger 2 are connected to each other through a double-headed screw 4. Both ends of the double-headed screw 4 extend to the outside of the mounting portion 3 and are connected with fixing nuts. A mounting cavity for accommodating the rotor poles is formed between the upper hanger 1, the lower hanger 2 and the double-headed screw 4. A plurality of first straps 5 are distributed outside the mounting cavity. The first straps 5 are used to bind the rotor poles and the double-headed screw 4 to each other; the mounting portion 3 is fastened to the double-headed screw 4 through a snap-fit ​​assembly, and the snap-fit ​​assembly includes a first snap-fitting opening 7 located on the outside of the mounting portion 3, a clamping block 8 is provided on the outside of the first snap-fitting opening 7, and a second snap-fitting opening 9 is provided on the inside of the clamping block 8. The first snap-fitting opening 7 and the second snap-fitting opening 9 form a mounting groove for fastening and connecting the double-headed screw 4 after being enclosed. One end of the clamping block 8 is rotated to connect to the mounting portion 3 through a pin shaft 10, and the clamping block 8 and the mounting portion 3 are connected to each other through a tension spring 11.

[0063] The clamping block 8 forms an extrusion opening 12 at one end away from the pin 10 to fit the double-headed screw 4 .

[0064] There are four double-headed screws 4 and they are symmetrically arranged on the mounting parts 3 at both ends. The outside of each double-headed screw 4 is connected to the locking assembly. The two pin shafts 10 on the same mounting part 3 are buckled and connected with an L-shaped limit plate 13. The limit plate 13 is used to limit the rotation of the clamping block 8 after buckling.

[0065] The end of the pin shaft 10 forms a special-shaped limiting portion 101, and an annular rotation groove 102 is formed on the pin shaft 10 inside the limiting opening. One side of the limiting piece 13 is provided with a socket 131 that matches the limiting portion 101, and the other side of the limiting portion 101 is in contact with the outer wall of the clamping block 8.

[0066] It also includes a support assembly for supporting the rotor poles in a vertical state, and an operating opening for the upper hanger 1, the lower hanger 2, the double-headed screw 4 and the first strap 5 to extend into is formed between the support assembly and the rotor poles.

[0067] The support assembly includes a support frame 14, one end of the support frame 14 is provided with a base 15, the other end of the support frame 14 is provided with a hanging ring 16, the middle of the support frame 14 is respectively provided with a limit plate 17 and a plurality of pull rod assemblies, the limit plate 17 is used to abut against the step surface of the rotor pole, the pull rod assembly is used to be buckled into the long slot of the rotor pole and to pull the rotor pole as the support frame 14 rotates; the pull rod assembly includes a transverse tube 18 that is detachably connected to the support frame 14, the transverse tube 18 and the support frame 14 are connected to each other via a connecting portion 19, two pull rods 20 are arranged side by side on the transverse tube 18, the ends of the pull rods 20 extend to the long slot of the rotor pole and are buckled and connected to the rotor pole, and the cross-sectional shape of the long slot is T-shaped.

[0068] The support frame 14 includes two vertical rods 141 arranged side by side. The vertical rods 141 are connected to each other via a plurality of reinforcing ribs 142 . The base 15 and the limiting plate 17 are both welded to the support frame 14 .

[0069] The transverse tube 18 is located at the interval between the two vertical rods 141 . Both ends of the transverse tube 18 are threadedly connected to the connecting portion 19 . The end of the connecting portion 19 passes through the vertical rods 141 to form a cover plate.

[0070] An installation gap is formed between the base 15 and the end face of the rotor pole. A slot is provided on the base 15 on one side of the installation gap. A pulley block is buckled in the slot. The pulley block is used to slide the lower hanger 2 into the installation gap.

[0071] The pulley assembly includes two pulley plates 21 arranged side by side. One end of the pulley plate 21 extends to the outside of the base 15. A plurality of rollers 22 are arranged side by side on the pulley plate 21.

[0072] A sleeve 23 is provided on one side of the cross tube 18, and the pull rod 20 and the sleeve 23 are nested inside and outside. One end of the pull rod 20 passes through the pull rod 20 and is connected to a T-shaped clamping joint, and the other end of the pull rod 20 passes through the cross tube 18 and is threadedly connected to a tightening nut 24. The middle parts of the pull rod 20 and the sleeve 23 are connected to each other through a pin 6; the pin 6 can be a screw rod, and the end of the screw rod is connected to a nut for fixation after passing through the pull rod 20 and the sleeve 23.

[0073] Compared with Example 2, this embodiment further defines the structure of the tie rod assembly, so that the tie rod assembly can be separately loaded and unloaded during use, thereby improving the operating efficiency of the operator. When the support frame 14 is placed, the tie rod assembly is first placed on the top of the rotor pole together with the support frame 14, and then the operator rotates the tie rod 20 and extends it into the long slot of the rotor pole, and then rotates the tie rod 20 again to engage with the long slot and fix it with the latch 6. After the tie rod 20 is engaged, the operator screws in the tightening nut 24 to tighten the tie rod 20, so that the tie rod 20 can be completely fitted with the inner wall surface of the long slot in this state, thereby realizing the installation and limiting of the tie rod 20, so that the rotor pole remains in a vertical state together with the support frame 14 after rotation, thereby improving the subsequent installation stability of the lifting tool.

[0074] When the lifting tool is installed on the outside of the rotor pole, the operator can unlock the pull rod 20 in the same way and rotate it to pull it out, thereby releasing the limit on the rotor pole without affecting the binding of the first strap 5.

Claims

1. A magnetic pole mounting mechanism for a generator rotor, characterized in that: The invention comprises an upper hanger (1) and a lower hanger (2), wherein both ends of the upper hanger (1) and the lower hanger (2) form a mounting portion (3), the mounting portions (3) of the upper hanger (1) and the lower hanger (2) are connected to each other via a double-headed screw (4), both ends of the double-headed screw (4) extend to the outside of the mounting portion (3) and are connected to a fixing nut, and a mounting cavity for accommodating a rotor magnetic pole is formed between the upper hanger (1), the lower hanger (2) and the double-headed screw (4), and a plurality of first binding bands (5) are distributed outside the mounting cavity, and the first binding bands (5) are used to bind the rotor magnetic pole and the double-headed screw (4) to each other. Bundling; the mounting portion (3) is snap-fitted to the double-headed screw (4) via a snap-fit ​​assembly, the snap-fit ​​assembly comprising a first snap-fit ​​opening (7) located on the outside of the mounting portion (3), a clamping block (8) is provided on the outside of the first snap-fit ​​opening (7), a second snap-fit ​​opening (9) is provided on the inside of the clamping block (8), the first snap-fit ​​opening (7) and the second snap-fit ​​opening (9) are enclosed to form a mounting groove for snap-fitting the double-headed screw (4), one end of the clamping block (8) is rotatably connected to the mounting portion (3) via a pin shaft (10), and the clamping block (8) and the mounting portion (3) are connected to each other via a tension spring (11).

2. A magnetic pole mounting mechanism for a generator rotor according to claim 1, characterized in that: The clamping block (8) forms an extrusion port (12) at one end away from the pin shaft (10) for matching the double-headed screw (4).

3. The magnetic pole mounting mechanism for a generator rotor according to claim 1, characterized in that: The number of the double-headed screw rods (4) is four and they are symmetrically arranged on the mounting parts (3) at both ends. The outside of each double-headed screw rod (4) is connected to a snap-fit ​​assembly. An L-shaped limiting piece (13) is buckled and connected between the two pin shafts (10) on the same mounting part (3). The limiting piece (13) is used to limit the rotation of the clamping block (8) after buckling.

4. The magnetic pole mounting mechanism for a generator rotor according to claim 3, characterized in that: The end of the pin shaft (10) forms a special-shaped limiting portion (101), and an annular rotation groove (102) is formed on the pin shaft (10) inside the limiting opening. One side of the limiting piece (13) is provided with a socket (131) that matches the limiting portion (101), and the other side of the limiting portion (101) is in contact with the outer wall of the clamping block (8).

5. The magnetic pole mounting mechanism for a generator rotor according to claim 1, characterized in that: It also includes a support assembly for supporting the rotor poles in a vertical state, and an operating opening for the upper hanger (1), the lower hanger (2), the double-headed screw (4) and the first binding belt (5) to extend into is formed between the support assembly and the rotor poles.

6. The magnetic pole mounting mechanism for a generator rotor according to claim 5, characterized in that: The support assembly includes a support frame (14), one end of the support frame (14) is provided with a base (15), the other end of the support frame (14) is provided with a hanging ring (16), and the middle part of the support frame (14) is respectively provided with a limit plate (17) and a plurality of pull rod assemblies, the limit plate (17) is used to abut against the step surface of the rotor pole, and the pull rod assembly is used to be buckled into the long slot of the rotor pole and pull the rotor pole as the support frame (14) rotates; the pull rod assembly includes a transverse tube (18) detachably connected to the support frame (14), the transverse tube (18) and the support frame (14) are connected to each other via a connecting portion (19), and two pull rods (20) are arranged side by side on the transverse tube (18), and the ends of the pull rods (20) extend to the long slot of the rotor pole and are buckled and connected to the rotor pole.

7. The magnetic pole mounting mechanism for a generator rotor according to claim 6, characterized in that: The support frame (14) comprises two vertical rods (141) arranged side by side, the vertical rods (141) are connected to each other via a plurality of reinforcing ribs (142), and the base (15) and the limiting plate (17) are both welded to the support frame (14).

8. The magnetic pole mounting mechanism for a generator rotor according to claim 7, characterized in that: The horizontal tube (18) is located at the interval between the two vertical rods (141), and both ends of the horizontal tube (18) are threadedly connected to the connecting portion (19), and the end of the connecting portion (19) passes through the vertical rods (141) to form a cover plate.

9. The magnetic pole mounting mechanism for a generator rotor according to claim 6, characterized in that: A sleeve (23) is provided on one side of the transverse tube (18), and the pull rod (20) and the sleeve (23) are nested inside and outside. One end of the pull rod (20) passes through the pull rod (20) and is connected to a T-shaped clamping joint, and the other end of the pull rod (20) passes through the transverse tube (18) and is threadedly connected to a tightening nut (24). The middle parts of the pull rod (20) and the sleeve (23) are connected to each other via a pin (6).

10. The magnetic pole mounting mechanism for a generator rotor according to claim 6, characterized in that: The invention also comprises a second strap (25) detachably connected to the support frame (14), and the second strap (25) is used for pressing the support frame (14) against and fixing it on a heavy facility.

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