Stator positioning and mounting device for generator

Abstract

The utility model provides a stator positioning and mounting device for a generator. The stator positioning and mounting device comprises a suspender, a bracket and a clamping and positioning assembly, the suspender is used for being vertically suspended at the output end of the lifting equipment; the bracket is connected to the bottom end of the hanging rod and has a storage state suitable for penetrating through an inner hole of the stator and an unfolding state for supporting the end wall of the bottom end of the stator; the clamping and positioning assembly sleeves the hanging rod in an up-down sliding manner and is provided with a positioning end which extends into the inner hole to enable the hanging rod and the stator to keep coaxial, and an abutting end which is in lap joint with the end wall of the top end of the stator; and when the bracket is in the unfolded state, the pressing end is matched with the bracket to clamp the stator. According to the utility model, the clamping and positioning assembly provided with the positioning end and the pressing end is adopted to cooperate with the bracket in the unfolded state, so that the stator and the suspender can be kept coaxial and fixed on the suspender, the stator is prevented from deviating on the suspender, and accurate installation of the stator and the generator housing is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of generator assembly, and in particular relates to a stator positioning and installation device for a generator. Background Art

[0002] The main components of the magnetic levitation generator include the generator housing, passive magnetic bearings, rotor and stator. The magnetic levitation generator is a vertical structure with a large size. The stator and magnetic bearings are installed from bottom to top inside the generator housing. When the magnetic levitation generator is installed, the stator is first assembled to the lower end of the generator housing, and then the magnetic bearings are assembled on the stator, and finally the rotor runs through the two suspension settings.

[0003] In the prior art, the tools used to install the stator are all installed horizontally. When installing the generator stator, it is difficult to accurately install the stator into the generator casing. In addition, since the stator is a cylindrical object, the axial installation distance inside the casing is deep, which makes the installation more complicated. At the same time, the bottom diameter of the generator casing is small, and the installation device can only be installed from top to bottom, which makes it difficult for operators to operate. Utility Model Content

[0004] The embodiment of the utility model provides a stator positioning and installation device for a generator, aiming to solve the problems of great difficulty in stator installation operation and low precision in the stator installation process in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a stator positioning and installation device for a generator, including a hanger, a bracket and a clamping and positioning assembly; the hanger is used to be vertically suspended at the output end of the lifting equipment; the bracket is connected to the bottom end of the hanger, and has a storage state suitable for passing through the inner hole of the stator, and an expanded state supporting the bottom end wall of the stator; the clamping and positioning assembly is slidably sleeved on the hanger up and down, and the clamping and positioning assembly has a positioning end extending into the inner hole to keep the hanger and the stator coaxial, and a pressing end overlapped on the top end wall of the stator; wherein, when the bracket is in the expanded state, the pressing end cooperates with the bracket to clamp the stator.

[0006] In a possible implementation, the bracket includes at least two support plates, the ends of each support plate are overlapped in sequence up and down, and the overlapped parts are rotatably connected to the bottom end of the suspension rod.

[0007] In one possible implementation, the clamping and positioning assembly includes a sleeve and a positioning plate. The sleeve is slidably mounted on the suspension rod up and down, and a pressure head is provided at the bottom end of the sleeve. The pressure head is used to press downward against the top end wall of the stator and form a pressing end; the positioning plate is coaxially mounted on the suspension rod and slidably cooperates with the suspension rod. The positioning plate is located below the pressure head, and the positioning plate is used to embed downward into the inner hole and form a positioning end.

[0008] In a possible implementation, a connecting hole is provided on the positioning plate, and the connecting hole is used to connect an operating rod extending upwardly from the inner hole.

[0009] In a possible implementation, a third limiter is provided on the suspension rod. The third limiter is located below the positioning plate and is used to limit an extreme position of the positioning plate sliding down along the suspension rod.

[0010] In a possible implementation, the upper half of the suspension rod is a threaded section, a first position-limiting member is screwed onto the threaded section, and the first position-limiting member presses downward against the top end of the clamping and positioning assembly.

[0011] In a possible implementation manner, a lifting ring is screwed onto the top end of the threaded section.

[0012] In a possible implementation, a plurality of counterweight discs are sleeved on the threaded section, and a second position limiting member is screwed to a portion of the threaded section below the counterweight disc, and the second position limiting member cooperates with a lifting ring to clamp each counterweight disc.

[0013] In a possible implementation, a cushion block is sleeved on the threaded segment, and the cushion block is located between the second limiting member and the counterweight plate.

[0014] In a possible implementation, the spacer is provided with a plurality of cross bars spaced apart from each other along the circumference of the suspension rod.

[0015] The beneficial effects of the stator positioning and installation device for a generator provided by the utility model are as follows: compared with the prior art, the utility model adopts a clamping and positioning component with a positioning end, which cooperates with a bracket in an unfolded state, so that the stator and the suspension rod can be installed coaxially, preventing the stator from being offset on the suspension rod, which is beneficial to the accurate installation of the stator and the generator housing; the stator is fixed and driven by the pressing end on the clamping and positioning component to extend into the deeper stator installation position inside the generator housing for installation, which can reduce the operational difficulty of stator installation and improve the efficiency of generator stator installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic front view of the structure of a stator positioning and mounting device for a generator provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the front view structure of the stator positioning and installation device for a generator provided by an embodiment of the utility model when the bracket is in an unfolded state;

[0018] Figure 3 A schematic diagram of the front view structure of a suspension rod used in a stator positioning and installation device for a generator provided in an embodiment of the utility model;

[0019] Figure 4A schematic diagram of the front view of the structure of the stator positioning and installation device for a generator provided by an embodiment of the utility model when supporting the stator;

[0020] Figure 5 A schematic diagram of the structure of the stator positioning and installation device for a generator provided by an embodiment of the utility model when the bracket is in a storage state when viewed from above;

[0021] In the figure: 10, suspension rod; 11, first limit member; 12, second limit member; 13, third limit member; 14, lifting ring; 15, counterweight plate; 16, cushion block; 161, cross bar; 20, bracket; 21, support plate; 30, clamping and positioning assembly; 31, sleeve; 311, pressure head; 32, positioning plate; 321, connecting hole; 40, stator. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention.

[0024] Please also read Figures 1 to 5, the stator positioning and installation device for a generator provided by the utility model is now described. The stator positioning and installation device for a generator comprises a suspension rod 10, a bracket 20 and a clamping and positioning assembly 30; the suspension rod 10 is used to be vertically suspended at the output end of the lifting device; the bracket 20 is connected to the bottom end of the suspension rod 10, and has a storage state suitable for passing through the inner hole of the stator 40, and an unfolded state of the bottom end wall supporting the stator 40; the clamping and positioning assembly 30 is slidably sleeved on the suspension rod 10 up and down, and the clamping and positioning assembly 30 has a positioning end extending into the inner hole to keep the suspension rod 10 and the stator 40 coaxial, and a pressing end overlapped on the top end wall of the stator 40; wherein, when the bracket 20 is in the unfolded state, the pressing end cooperates with the bracket 20 to clamp the stator 40.

[0025] It should be noted that the lifting equipment can be a crane, and the hook of the lifting equipment uses a balancer. The balancer is an auxiliary tool for hanging heavy production operation equipment, which is used by people engaged in continuous and repetitive work on the production line; the stator 40 is the stationary part of the motor. The stator 40 is composed of three parts: a stator 40 core, a stator 40 winding and a machine base. The stator 40 is hollow and cylindrical, and the suspension rod 10 can extend into the internal space of the stator 40; the length of the bracket 20 when not in the unfolded state is smaller than the inner diameter of the stator 40, so that the bracket 20 can pass through the internal space of the stator 40, and support the bottom end wall of the stator 40 when in the unfolded state, and cooperate with the positioning end on the clamping and positioning assembly 30 to keep the stator 40 and the suspension rod 10 coaxially fixed, which is conducive to the precise installation of the stator 40 and the generator casing; the clamping and positioning assembly 30 slides on the suspension rod 10 and can change the connection position with the suspension rod 10. The clamping and positioning assembly 30 can be fixed on the suspension rod 10 and press the upper end wall of the stator 40, and can also slide upward on the suspension rod 10 to move the positioning plate 32 out of the inner hole of the stator 40, so that the suspension rod 10 can move horizontally in the inner hole of the stator 40, driving the bracket 20 to move out of the inner hole of the stator 40.

[0026] The working principle of the stator positioning and installation device for a generator provided by the utility model is as follows: first, the suspension rod 10 is extended into the inner hole of the stator 40, so that the bracket 20 is located below the stator 40, and the bracket 20 is switched to the unfolded state so that the bracket 20 supports the bottom end wall of the stator 40. At this time, the upper end wall of the stator 40 is pressed tightly by the pressing end of the clamping and positioning component 30, so that the stator 40 can be fixed on the suspension rod 10. At this time, the suspension rod 10 and the stator 40 are coaxial, so that the stator 40 can be extended into the generator housing together with the suspension rod 10 to install the stator 40. After the stator 40 is installed, the clamping and positioning component 30 slides upward along the suspension rod 10. At this time, the positioning plate 32 can be taken out from the inner hole of the stator 40, and the position of the suspension rod 10 in the inner hole of the stator 40 is horizontally moved, so that the suspension rod can be moved out of the inner hole of the stator 40.

[0027] In addition, when it is necessary to disassemble and replace the stator 40, the present device can also be used to perform the stator 40 disassembly operation. When it is necessary to disassemble the stator 40 on the generator housing, the hanger 10 is extended into the generator housing and passed through the inner hole of the stator 40, so that the bracket 20 is under the stator 40, and the bracket 20 is switched to the unfolded state, so that the bracket 20 supports the bottom end wall of the stator 40, and the upper end wall of the stator 40 is pressed by the pressing end of the clamping positioning assembly 30, so that the stator 40 can be fixed on the hanger 10. At this time, the stator 40 is removed from the generator housing, and the removed stator 40 is moved out of the generator housing following the hanger 10, thereby completing the disassembly operation of the stator 40.

[0028] The beneficial effects of the stator positioning and installation device for a generator provided by the utility model are as follows: compared with the prior art, the utility model adopts a clamping positioning component 30 with a positioning end, which cooperates with the bracket 20 in the unfolded state, so that the stator 40 and the suspension rod 10 can be kept coaxially installed, preventing the stator 40 from being offset on the suspension rod 10, which is conducive to the accurate installation of the stator 40 and the generator housing; the stator 40 is fixed and driven by the pressing end on the clamping positioning component 30 to extend into the deeper stator 40 installation position inside the generator housing for installation, which can reduce the operational difficulty of installing the stator 40 and improve the installation efficiency of the generator stator 40.

[0029] In one possible implementation, see Figures 1 to 4 The bracket 20 includes at least two support plates 21 , and the ends of each support plate 21 are overlapped in sequence up and down, and the overlapped parts are rotatably connected to the bottom end of the suspension rod 10 .

[0030] It should be noted that the bracket 20 that is not in the unfolded state is in the stored state, and the support plate 21 in the stored state can extend into the inner hole of the stator 40, and switch to the unfolded state when it is located below the bottom end wall of the stator 40. When the stator 40 is installed, the support plate 21 in the stored state can be moved out of the inner hole of the stator 40; the number of support plates 21 can be two or more. When there are two support plates 21, the two support plates 21 in the unfolded state are unfolded 180° and support the bottom end wall of the stator 40. When there are three support plates 21, the three support plates 21 in the unfolded state are at an angle of 1 The bracket 20 is unfolded by 20° and supports the bottom end wall of the stator 40. When there are four support plates 21, the four support plates 21 in the unfolded state form a cross state to support the bottom end wall of the stator 40. In order to ensure that the support plates 21 in the stored state can shuttle through the inner hole of the stator 40, two or three support plates 21 can be preferably used to form the bracket 20. When in the stored state, each support plate 21 is completely folded into an overlapping or nearly overlapping state. At this time, the suspension rod 10 is horizontally offset in the inner hole of the stator 40, so that the bracket 20 in the stored state can pass through the inner hole of the stator 40, which is conducive to the smooth removal of the bracket 20 from the inner hole of the stator 40.

[0031] In one possible implementation, see Figure 5 The clamping and positioning assembly 30 includes a sleeve 31 and a positioning plate 32. The sleeve 31 is slidably sleeved on the suspension rod 10 up and down. A pressure head 311 is provided at the bottom end of the sleeve 31. The pressure head 311 is used to press downward against the top end wall of the stator 40 and form a pressing end; the positioning plate 32 is coaxially sleeved on the suspension rod 10 and slidably cooperates with the suspension rod 10. The positioning plate 32 is located below the pressure head 311. The positioning plate 32 is used to be embedded downward into the inner hole and form a positioning end.

[0032] It should be noted that when the bracket 20 is in the unfolded state, the pressure head 311 can be pressed tightly against the top end wall of the stator 40, and the stator 40 is fixed to the hanger 10 in cooperation with the bracket 20; the positioning plate 32 can cooperate with the aperture gap on the stator 40 and be located in the internal space of the stator 40 to prevent the stator 40 from tilting during installation or disassembly, so that the stator 40 can follow the hanger 10 to extend into the generator casing to realize the installation of the stator 40, and the pressure head 311 keeps the stator 40 in a coaxial position with the hanger 10, avoiding the stator 40 from deflecting when it is extended into the generator casing together with the hanger 10 for installation, which is beneficial to improve the accuracy of the installation of the stator 40; when the hanger 10 needs to be removed, the sleeve 31 slides upward and drives the pressure head 311 to separate from the stator 40, and the positioning plate 32 slidably set on the hanger 10 can be moved out of the internal space of the stator 40, at which time the hanger 10 can be moved out of the inner hole of the stator 40.

[0033] In one possible implementation, see Figure 5 The positioning plate 32 is provided with a connecting hole 321, and the connecting hole 321 is used to connect the operating rod extending upward from the inner hole.

[0034] It should be noted that bolts can also be set in the operating hole. The purpose of the bolts and the operating rod is to remove the positioning plate 32 from the inner hole of the stator 40 and separate the suspension rod 10 from the stator 40, so as to prevent the positioning plate 32 from affecting the movement of the suspension rod 10 inside the stator 40 and enable the suspension rod 10 to be removed smoothly.

[0035] In one possible implementation, see Figure 2 A third limiting member 13 is provided on the suspension rod 10 . The third limiting member 13 is located below the positioning plate 32 and is used to limit the extreme position of the positioning plate 32 sliding down along the suspension rod 10 .

[0036] It should be noted that the third limit member 13 can be a cotter pin set on the hanger 10, so that the positioning plate 32 is fixed in the inner hole of the stator 40 when it is located in the inner hole of the stator 40, which can limit the vertical position of the stator 40 and prevent the stator 40 from shifting, which is beneficial to the stability of the stator 40 on the hanger 10, improves the installation stability of the stator 40, and is beneficial to the installation accuracy of the stator 40.

[0037] In one possible implementation, see Figure 2 The upper half of the suspension rod 10 is a threaded section, on which a first stopper 11 is screwed, and the first stopper 11 presses downward against the top of the clamping and positioning assembly 30 .

[0038] It should be noted that the first limit member 11 can be a nut that cooperates with the threaded section, and a gasket is provided at the bottom of the nut. When the first limit member 11 slides up and down the threaded section to abut against the upper surface of the clamping and positioning assembly 30, the first limit member 11 can limit the clamping and positioning assembly 30 from sliding upward along the suspension rod 10, so that the pressing end of the clamping and positioning assembly 30 presses tightly against the top end wall of the stator 40, which is beneficial for the stator 40 to remain coaxially fixed with the suspension rod 10 and prevent the stator 40 from shifting.

[0039] In one possible implementation, see Figure 2 A lifting ring 14 is screwed on the top of the threaded section.

[0040] It should be noted that the lifting ring 14 can connect the boom 10 to the lifting equipment, and a safety device can be provided on the lifting ring 14 to prevent the boom 10 from falling; and the lifting ring 14 connected to the lifting device can limit the rotation of the boom 10 during the lifting process, so that the stator 40 is installed stably.

[0041] In one possible implementation, see Figure 2 A plurality of counterweight plates 15 are sleeved on the threaded section, and a second position-limiting member 12 is screwed to a portion of the threaded section below the counterweight plates 15 . The second position-limiting member 12 cooperates with the lifting ring 14 to clamp each counterweight plate 15 .

[0042] It should be noted that the second limit member 12 can be a nut that cooperates with the threaded section, and a gasket is provided above the nut; the counterweight plate 15 can be selected to be set to multiple as needed. When it is necessary to increase or decrease the counterweight of the device, the position of the second limit member 12 on the hanger 10 is adjusted to adapt to the multiple counterweight plates 15 above the cushion block 16. All of them can be mounted on the hanger 10. The counterweight plates 15 that can be increased or decreased can achieve a balance between the stator 40 and the lifting equipment, making the installation of the stator 40 more stable.

[0043] In one possible implementation, see Figure 2 A cushion block 16 is sleeved on the threaded section, and the cushion block 16 is located between the second limiting member 12 and the counterweight plate 15.

[0044] It should be noted that the cushion block 16 plays a transitional role in the cooperation between the counterweight plate 15 and the second position-limiting member 12 , so as to prevent the counterweight plate 15 from directly acting on the second position-limiting member 12 and causing damage to the second position-limiting member 12 .

[0045] In one possible implementation, see Figure 2 The spacer 16 has a plurality of cross bars 161 spaced apart along the circumference of the suspension rod 10 .

[0046] It should be noted that after the boom 10 is connected to the lifting equipment, the operator controls the position of the boom 10 through the cross bar 161 so that the stator 40 can be aligned with the blind hole on the generator housing and inserted into the generator housing for installation, thereby improving the installation efficiency of the stator 40.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator positioning and installation device for a generator, characterized in that: include: A suspension rod is used for vertical suspension at the output end of the lifting equipment; A bracket connected to the bottom end of the suspension rod, having a storage state suitable for passing through the inner hole of the stator, and an expanded state supporting the bottom end wall of the stator; A clamping and positioning assembly is slidably sleeved on the suspension rod up and down, and the clamping and positioning assembly has a positioning end extending into the inner hole to keep the suspension rod and the stator coaxial, and a pressing end overlapped on the top end wall of the stator; Wherein, when the bracket is in the unfolded state, the pressing end cooperates with the bracket to clamp the stator.

2. The stator positioning and installation device for a generator according to claim 1, characterized in that: The bracket comprises at least two supporting plates, the ends of each supporting plate are overlapped in sequence up and down, and the overlapping parts are rotatably connected to the bottom end of the suspension rod.

3. The stator positioning and installation device for a generator according to claim 1, characterized in that: The clamping and positioning assembly comprises: A sleeve is slidably sleeved on the suspension rod up and down, and a pressure head is provided at the bottom end of the sleeve, and the pressure head is used to press downward against the top end wall of the stator to form the pressing end; A positioning plate is coaxially sleeved on the suspension rod and slidably matched with the suspension rod. The positioning plate is located below the pressure head and is used to be embedded downward into the inner hole and form the positioning end.

4. The stator positioning and installation device for a generator according to claim 3, characterized in that: The positioning plate is provided with a connecting hole, and the connecting hole is used to connect an operating rod extending upwardly from the inner hole.

5. The stator positioning and installation device for a generator according to claim 3, characterized in that: The suspension rod is provided with a third position-limiting member, and the third position-limiting member is located below the positioning plate and is used to limit the extreme position of the positioning plate sliding down along the suspension rod.

6. The stator positioning and installation device for a generator according to any one of claims 1 to 5, characterized in that: The upper half of the suspension rod is a threaded section, and a first limiting member is screwed onto the threaded section. The first limiting member presses downward against the top end of the clamping and positioning assembly.

7. The stator positioning and mounting device for a generator according to claim 6, characterized in that: A lifting ring is screwed on the top end of the threaded section.

8. The stator positioning and mounting device for a generator according to claim 7, characterized in that: A plurality of counterweight discs are sleeved on the threaded section, and a second position-limiting member is screwed to a portion of the threaded section below the counterweight discs. The second position-limiting member cooperates with the lifting ring to clamp each of the counterweight discs.

9. The stator positioning and mounting device for a generator according to claim 8, characterized in that: A cushion block is sleeved on the threaded section, and the cushion block is located between the second limiting member and the counterweight plate.

10. The stator positioning and installation device for a generator according to claim 9, characterized in that: The cushion block is provided with a plurality of cross bars spaced apart along the circumference of the suspension rod.

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