Magnetic pole mounting mechanism for generator rotor and mounting process

Abstract

The invention discloses a magnetic pole installation mechanism for a generator rotor and an installation technology, the magnetic pole installation mechanism for the generator rotor comprises an upper hanging bracket (1) and a lower hanging bracket (2), two ends of the upper hanging bracket (1) and two ends of the lower hanging bracket (2) form installation parts (3), and the installation 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). Two ends of the double-thread screw (4) extend to the outer side of the mounting part (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), a plurality of first binding belts (5) are distributed outside the mounting cavity, and the first binding belts (5) 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 invention relates to a rotor magnetic pole hoisting tool, in particular to a magnetic pole mounting mechanism and mounting process for a generator rotor. Background Art

[0002] During the assembly process of the generator of the pumped storage power station, the operators need to lift the rotor poles into the installation shaft of the energy storage unit and fix them one by one. On this basis, the existing lifting tools for rotor poles are shown in Patent 202322879011.9, including lifting claws and supporting claws respectively arranged on the upper and lower sides of the rotor poles. After installation, the lifting claws and supporting claws respectively engage the two ends of the rotor poles and are connected to each other through screws on both sides, thereby supporting and limiting the rotor poles during the lifting process to prevent the rotor poles from deviating from the lifting tools and falling off.

[0003] However, the defect of the lifting tool is that, due to the very narrow installation shaft space of some generators, it can only reserve installation space for the vertical insertion of the rotor poles, and the claw plate structure in the above-mentioned lifting tool will inevitably cause it to occupy space in the width direction, and it needs to be inserted into the installation shaft together with the rotor poles during lifting, resulting in the problem of mutual interference between the lifting tool and 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 place when installing them; and due to the limitation of the lateral movement of the hoist, it is difficult to achieve fine-tuning of the lifting claw card and the supporting claw card in the horizontal position, that is, the lifting claw card and the supporting claw card cannot be completely aligned after moving. When there is a position deviation between the lifting claw card and the supporting claw card, it will cause the mutual misalignment of the connection holes of the two, and then the two ends of the screw cannot be smoothly inserted into the lifting claw card and the supporting claw card. Under the above-mentioned 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] In addition, since the rotor poles need to be placed flat on the ground when idle, and the above-mentioned lifting tools cannot be directly installed on the flat rotor poles due to their weight and lifting action limitations, the operators need to lift the rotor poles to a vertical state first, and then move the lifting claws and supporting claws to the upper and lower sides of the rotor poles to complete the assembly. The above-mentioned lifting action not only requires the cooperation of multiple lifting tools, which makes it easy for different lifting tools to interfere with each other and cause obstacles during the use of the lifting tools, but also because the rotor poles need to be suspended for a long time during the operation, it is easy for them to deviate and fall, which poses a great 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. Summary of the invention

[0006] The object of the present invention is to provide a magnetic pole mounting mechanism and mounting process 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: a magnetic pole mounting mechanism for a generator rotor comprises an upper hanger and a lower hanger, a mounting portion is formed at both ends of the upper hanger and the lower hanger, the mounting portions of the upper hanger and the lower hanger are mutually connected via a double-headed screw, both ends of the double-headed screw extend to the outside of the mounting portion and are connected with a fixing nut, a mounting cavity for accommodating a rotor magnetic pole is formed between the upper hanger, the lower hanger and the double-headed screw, a plurality of first binding straps are distributed outside the mounting cavity, the first binding straps are used to bind the rotor magnetic pole and the double-headed screw together; the mounting portion is buckled and connected to the double-headed screw via a clamping assembly, the clamping assembly comprises a first clamping opening located at the outside of the mounting portion, a clamping block is provided on the outside of the first clamping opening, a second clamping opening is provided on the inside of the clamping block, the first clamping opening and the second clamping opening form a mounting groove for buckling and connecting the double-headed screw after being enclosed, 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 mutually connected via a tension spring.

[0008] In the aforementioned magnetic pole mounting mechanism for the 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 generator rotor magnetic pole mounting mechanism, 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 buckled and connected between the two pin shafts on the same mounting part. The limit plate is used to limit the rotation of the clamp after buckling.

[0010] In the aforementioned generator rotor magnetic pole mounting mechanism, the end of the pin shaft forms a special-shaped limiting portion, 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 poles in a vertical state, and an operating opening is formed between the support assembly and the rotor magnetic poles for the upper hanger, lower hanger, double-headed screw and first binding strap to extend into.

[0012] In the aforementioned generator rotor magnetic pole mounting mechanism, 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 magnetic pole, and the pull rod assembly is used to be buckled in the long groove of the rotor magnetic pole and pull the rotor magnetic 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, and 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 magnetic pole and are buckled and connected to the rotor magnetic pole.

[0013] In the aforementioned magnetic pole mounting mechanism for the generator rotor, 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 both welded to the support frame.

[0014] In the aforementioned magnetic pole mounting mechanism for the generator rotor, 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 rods to form a cover plate.

[0015] In the aforementioned generator rotor magnetic pole mounting mechanism, an installation gap is formed between the base and the end face of the rotor magnetic 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.

[0016] In the aforementioned magnetic pole mounting mechanism for the 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 generator rotor magnetic pole mounting mechanism, 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 clamping 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 the generator rotor also includes a second strap detachably connected to the support frame, and the second strap is used to support and fix the support frame on the heavy facility.

[0019] The installation process of the magnetic pole installation mechanism for the generator rotor mentioned above includes the following steps:

[0020] ① The support assembly rotates and lifts the rotor poles from a horizontal state to a vertical state, and lifts and limits the rotor poles in the vertical state;

[0021] ② Move the upper hanger and the lower hanger to the upper and lower sides of the rotor pole respectively, and engage the upper end of the double-headed screw with the upper hanger through the clamping assembly;

[0022] ③ The lower hanger is moved horizontally according to the buckling position of the stud screw, so that the lower end of the stud screw is buckled with the clamping assembly on the lower hanger after the lower hanger is moved into place, and the stud screw remains in a vertical state after buckling at both ends;

[0023] ④ Tie the first strap around the double-headed screw and the outside of the rotor pole, then release the limit of the support assembly on the rotor pole, and then use the hoist to hoist the rotor pole into the installation shaft of the generator;

[0024] ⑤ Plug the rotor poles into the generator, and gradually release the first binding band on the outside of the rotor poles as the rotor poles are inserted;

[0025] ⑥ After the rotor pole is fully inserted, connect and fix the rotor pole and the generator, then unscrew the fixing nut and remove the upper and lower hangers from the upper and lower sides of the rotor pole respectively.

[0026] Compared with the prior art, the present invention has the following characteristics:

[0027] (1) The present invention can bind and fix the rotor poles after installation through the structural cooperation 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 clamping assembly, the double-headed screw can be horizontally inserted into the installation groove 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;

[0028] (2) Through 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;

[0029] (3) Through the setting of the support assembly, the rotor pole can be lifted before lifting, so as to facilitate 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 lifting, and space can be reserved for the installation of the upper and lower hangers, so as to avoid the risk of the rotor pole falling during the rotating lifting process on the one hand, and the installation of the lifting tool can be completed in the non-lifting state on the other hand, that is, the safety of the overall action is improved; 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;

[0030] (4) Through the structural coordination of the pulley block 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;

[0031] (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;

[0032] Therefore, the present invention has the characteristics of small space occupation, convenient operation and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of Example 1;

[0034] Figure 2 yes Figure 1 A-axis view after the limiter is removed;

[0035] Figure 3 yes Figure 1 View in A direction after the limit piece is installed;

[0036] Figure 4 It is a schematic diagram of the structure of the limit piece and the pin shaft when plugged in;

[0037] Figure 5 It is a schematic diagram of the structure when the limit piece and the pin shaft are interlocked;

[0038] Figure 6 is a front view of the support assembly in Example 2;

[0039] Figure 7 is a schematic diagram of the installation of the support assembly in Example 2 before the rotor poles are lifted;

[0040] Figure 8 is a schematic structural diagram of Embodiment 2 when the rotor magnetic poles are in a vertical state;

[0041] Fig. 9 is a schematic structural diagram of Embodiment 3 when the rotor magnetic poles are in a vertical state;

[0042] Fig.10 It is a schematic diagram of the structure of the pull rod assembly in Example 3.

[0043] The marks in the accompanying drawings are: 1-upper hanger, 2-lower hanger, 3-installing part, 4-double-headed screw, 5-first strap, 6-pin, 7-first snap-fitting opening, 8-clamp, 9-second snap-fitting 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

[0044] 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.

[0045] Embodiment 1. A magnetic pole mounting mechanism for a generator rotor is constructed as follows Figure 1-5 As 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 fixing nuts. A mounting cavity for accommodating rotor poles 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 poles and the stud screw 4 to each other. The lower hanger 2, the stud 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 snap-fitted to the stud screw 4 via 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 snap-fitting and connecting the stud screw 4 after being enclosed, and one end of the clamping block 8 is rotatably connected to the mounting portion 3 via a pin 10, and the clamping block 8 and the mounting portion 3 are connected to each other via a tension spring 11.

[0046] The upper and lower sides of the clamping block 8 are in contact 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.

[0047] The clamping block 8 forms an extrusion opening 12 at one end away from the pin 10 to match the double-headed screw 4.

[0048] 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 a snap-fit ​​assembly. An L-shaped limit plate 13 is snap-fitted between the two pin shafts 10 on the same mounting part 3. The limit plate 13 is used to limit the rotation of the clamping block 8 after snapping.

[0049] 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.

[0050] It also includes a support assembly for supporting and limiting 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.

[0051] When using this embodiment, the operator first lifts the rotor pole and places it on the support assembly, and then installs the upper hanger 1 and the lower hanger 2 on the upper and lower sides of the rotor pole, and connects the mounting parts 3 at both ends 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 from one side of the clamping block 8 through the extrusion port 12, 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 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 buckling 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 respectively, 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.

[0052] After the stud screw 4 is installed, the operator inserts the limit plate 13 vertically from the outside of the pin shaft 10, so that the socket 131 on the limit plate 13 passes through the limit part 101 and enters the rotation groove 102, and the inner wall of the limit plate 13 fits with the clamping block 8. After the limit plate 13 is inserted, the operator rotates the pin shaft 10 again, so that the limit part 101 rotates and partially overlaps with the limit plate 13, so that the limit plate 13 is limited by the pin shaft 10 to prevent the limit plate 13 from detaching. After installation, the limit plate 13 can limit the rotation of the clamping block 8 to prevent the clamping block 8 from opening during the rotor pole hoisting process, that is, to ensure 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.

[0053] After the first strap 5 is tied, the operator can control the crane to lift the rotor pole together with the lifting tool, and lift it into the installation shaft of the generator in a conventional manner. When the rotor pole is lifted and locked with the generator, the operator gradually releases the first strap 5 tied on the rotor pole as the rotor pole is inserted, until the rotor pole is completely locked with the generator.

[0054] Embodiment 2. A magnetic pole mounting mechanism for a generator rotor is constructed as follows Figure 6-8 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 interconnected 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 with fixing nuts. A mounting cavity for accommodating rotor poles is formed between the upper hanger 1, the lower hanger 2 and the double-headed screw 4. A plurality of first binding straps 5 are distributed outside the mounting cavity. The first binding straps 5 are used to bind the rotor poles and the double-headed screw 4 to each other. The mounting portion 3 is connected to the double-headed screw 4 by snapping together through a snap-fitting assembly. The snap-fitting 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 snap-fitting and connecting the double-headed screw 4 after being enclosed. One end of the clamping block 8 is rotatably connected to the mounting portion 3 via a pin 10, and the clamping block 8 and the mounting portion 3 are connected to each other via a tension spring 11.

[0055] The clamping block 8 forms an extrusion opening 12 at one end away from the pin 10 to match the double-headed screw 4.

[0056] 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 a snap-fit ​​assembly. An L-shaped limit plate 13 is snap-fitted between the two pin shafts 10 on the same mounting part 3. The limit plate 13 is used to limit the rotation of the clamping block 8 after snapping.

[0057] 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.

[0058] 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.

[0059] 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 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, 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 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, 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 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.

[0060] 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 .

[0061] The transverse tube 18 is located at the interval between the two vertical rods 141 , and both ends of the transverse 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.

[0062] An installation gap is formed between the base 15 and the end surface 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.

[0063] The pulley block 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 .

[0064] The second binding belt 25 is also included and is detachably connected to the support frame 14. The second binding belt 25 is used to push the support frame 14 against and fix it on the heavy equipment.

[0065] The installation process of the magnetic pole installation mechanism for the generator rotor comprises the following steps:

[0066] ① The support assembly rotates and lifts the rotor poles from a horizontal state to a vertical state, and lifts and limits the rotor poles in the vertical state;

[0067] ② Move the upper hanger and the lower hanger to the upper and lower sides of the rotor pole respectively, and engage the upper end of the double-headed screw with the upper hanger through the clamping assembly;

[0068] ③ The lower hanger is moved horizontally according to the buckling position of the stud screw, so that the lower end of the stud screw is buckled with the clamping assembly on the lower hanger after the lower hanger is moved into place, and the stud screw remains in a vertical state after buckling at both ends;

[0069] ④ Tie the first strap around the double-headed screw and the outside of the rotor pole, then release the limit of the support assembly on the rotor pole, and then use the hoist to hoist the rotor pole into the installation shaft of the generator;

[0070] ⑤ Plug the rotor poles into the generator, and gradually release the first binding band on the outside of the rotor poles as the rotor poles are inserted;

[0071] ⑥ After the rotor pole is fully inserted, connect and fix the rotor pole and the generator, then unscrew the fixing nut and remove the upper and lower hangers from the upper and lower sides of the rotor pole respectively.

[0072] Compared with Example 1, this embodiment further defines the structure of the support assembly, so that when operating, the operator can first hoist the support frame 14 to the top of the horizontal rotor pole, and make the limit plate 17 and the step surface of the rotor pole fit each other, and the base 15 extends to the outside of the rotor pole and fits each other with the ground. After the support frame 14 is placed, the operator extends the pull rod assembly from the side of the rotor pole away from the base 15, so that the pull rod 20 and the long groove of the rotor pole are mutually engaged and moved laterally to the connection position and connected to the support frame 14 through the connection part 19, so that the cooperation of the limit plate 17 and the pull rod 20 can keep the rotor pole in a limited state relative to the support frame 14.

[0073] After the tie rod assembly is installed, the operator lifts the support frame 14 from the horizontal to the vertical state through the cooperation of the lifting ring 16 and the lifting device, and places the support frame 14 against the facade of the heavy equipment, so as to limit the support frame 14 by the cooperation of the heavy equipment and the second binding belt 25, and prevent the support frame 14 from tipping over together with the rotor poles during subsequent operations. In the vertical state, the support frame 14 can limit the rotor poles through the limiting plate 17 and the tie rod 20, so that the rotor poles remain in the vertical state, and leave space for the installation of the upper hanger 1 and the lower hanger 2.

[0074] Then the operator can remove the sling from the lifting ring 16 and sling the upper hanger 1 and the lower hanger 2 to the required 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 to the bottom of 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 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.

[0075] 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, thereby releasing 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.

[0076] Embodiment 3. A magnetic pole mounting mechanism for a generator rotor is constructed as follows 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 interconnected 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 with fixing nuts. A mounting cavity for accommodating rotor poles is formed between the upper hanger 1, the lower hanger 2 and the double-headed screw 4. A plurality of first binding straps 5 are distributed outside the mounting cavity. The first binding straps 5 are used to bind the rotor poles and the double-headed screw 4 to each other. The mounting portion 3 is connected to the double-headed screw 4 by snapping together through a snap-fitting assembly. The snap-fitting 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 snap-fitting and connecting the double-headed screw 4 after being enclosed. One end of the clamping block 8 is rotatably connected to the mounting portion 3 via a pin 10, and the clamping block 8 and the mounting portion 3 are connected to each other via a tension spring 11.

[0077] The clamping block 8 forms an extrusion opening 12 at one end away from the pin 10 to match the double-headed screw 4.

[0078] 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 a snap-fit ​​assembly. An L-shaped limit plate 13 is snap-fitted between the two pin shafts 10 on the same mounting part 3. The limit plate 13 is used to limit the rotation of the clamping block 8 after snapping.

[0079] 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.

[0080] 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.

[0081] 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 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, 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 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, 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 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.

[0082] 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 .

[0083] The transverse tube 18 is located at the interval between the two vertical rods 141 , and both ends of the transverse 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.

[0084] An installation gap is formed between the base 15 and the end surface 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.

[0085] The pulley block 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 .

[0086] 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 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 fixing after passing through the pull rod 20 and the sleeve 23.

[0087] Compared with Example 2, 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 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 can remain in a vertical state together with the support frame 14 after rotation, thereby improving the subsequent installation stability of the lifting tool.

[0088] 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 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 double-headed screw (4), the two ends of the double-headed screw (4) extend to the outside of the mounting portion (3) and are connected to fixing nuts, and a mounting cavity for accommodating rotor poles 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 poles 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. The magnetic pole mounting mechanism for a generator rotor according to claim 1, characterized in that: The clamping block (8) forms an extrusion opening (12) at one end away from the pin shaft (10) for matching with 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 plate (13) is snap-fitted between two pin shafts (10) on the same mounting part (3). The limiting plate (13) is used to limit the rotation of the clamping block (8) after snapping.

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), 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) matching 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 comprises 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 provided with a limit plate (17) and a plurality of pull rod assemblies, wherein 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 in the long groove of the rotor pole and pull the rotor pole as the support frame (14) rotates; the pull rod assembly comprises 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 groove 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 part (19), and the end of the connecting part (19) passes through the vertical rod (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 installation process of the magnetic pole installation mechanism for the generator rotor according to any one of claims 1 to 9, characterized in that: The following steps are involved: ① The support assembly rotates and lifts the rotor poles from a horizontal state to a vertical state, and lifts and limits the rotor poles in the vertical state; ② Move the upper hanger and the lower hanger to the upper and lower sides of the rotor pole respectively, and buckle the upper end of the double-headed screw with the upper hanger through the clamping assembly; ③ The lower hanger is moved horizontally according to the buckling position of the stud screw, so that the lower end of the stud screw is buckled with the clamping assembly on the lower hanger after the lower hanger is moved into place, and the stud screw remains in a vertical state after buckling at both ends; ④ Tie the first strap around the double-headed screw and the outside of the rotor pole, then release the limit of the support assembly on the rotor pole, and then use the hoist to hoist the rotor pole into the installation shaft of the generator; ⑤ Plug the rotor poles into the generator, and gradually release the first binding band on the outside of the rotor poles as the rotor poles are inserted; ⑥ After the rotor pole is fully inserted, connect and fix the rotor pole and the generator, then unscrew the fixing nut and remove the upper and lower hangers from the upper and lower sides of the rotor pole respectively.

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