Generator maintenance device

Abstract

The utility model relates to a generator maintenance device. The generator maintenance device comprises a chassis, a moving mechanism, a maintenance assembly and a guide mechanism. In the actual use process of the generator maintenance device, the generator maintenance device can normally move in the stator through the shape matching relationship between the guide mechanism and the strip-shaped groove, and the generator maintenance device can run in the preset direction through the sliding fit between the guide mechanism and the side wall of the strip-shaped groove, so that the maintenance efficiency is improved. And the gap between the stator and the rotor is maintained, maintenance personnel do not need to enter the stator, and the generator is prevented from being damaged by falling off the generator maintenance device.

Description

Technical Field

[0001] The present application relates to the field of electrical maintenance technology, and in particular to a generator maintenance device. Background Art

[0002] During the overhaul of the generator, the rotor needs to be regularly pulled out for inspection. The existing inspection method is mainly to first pull the rotor out of the stator, and then the operator enters the stator chamber to perform a series of inspections and tests.

[0003] However, the above maintenance method requires the removal of a large number of parts and takes a long time. Generally speaking, compared with not pulling out the rotor, pulling out the rotor for maintenance requires additional manpower time, and it is easy to cause collisions and other problems during the extraction process, which can damage the equipment.

[0004] Although the existing robot maintenance device can inspect small areas, the gap between the stator and the rotor is arc-shaped, and when the robot moves near the vertical direction of 90° or 270° inside the stator, the robot is subject to gravity and is prone to fall when moving on the inner wall of the cylindrical stator, thereby posing a risk of damage to the generator. Utility Model Content

[0005] Based on this, it is necessary to provide a generator maintenance device to address the problem that the existing robot maintenance device is easy to fall when moving on the inner wall of the cylindrical stator, thereby damaging the generator.

[0006] A generator maintenance device, the generator comprises a stator and a rotor capable of being inserted into or pulled out of a stator hole, the stator and the rotor are provided with a gap, the inner wall of the stator has a plurality of strip grooves, the strip grooves extend along the axial direction of the stator; along the radial direction inward of the stator, the distance between two opposite side walls of the strip grooves gradually decreases, characterized in that the generator maintenance device comprises:

[0007] Chassis;

[0008] A moving mechanism, connected to the chassis, and used to drive the chassis to move;

[0009] An overhaul component, disposed on the chassis, for overhauling the generator;

[0010] A guide mechanism is arranged on the chassis, the guide component can be partially located in the strip groove, the guide mechanism has two opposite guide surfaces, the two guide surfaces can be opposite to the two side walls of the strip groove, the two guide surfaces are gradually spaced apart in a direction away from the chassis, and the guide mechanism is used to guide the movement of the chassis along a preset direction.

[0011] In one embodiment, the guide mechanism includes a movable member, an elastic member and a stop member;

[0012] The stopper is connected to a side of the chassis facing away from the guide surface;

[0013] The chassis is provided with a guide hole in a direction perpendicular to the chassis, and the movable member is passed through the guide hole;

[0014] One end of the elastic member is connected to the stop member, and the other end is connected to the movable member. The movable member has two opposite side surfaces, which are two guide surfaces. The movable member can be partially located in the strip groove and adapted to the strip groove.

[0015] In one embodiment, the stopper comprises a supporting portion and a stopping portion;

[0016] The support portion is connected to a side of the chassis away from the guide surface, the stop portion is connected to a side of the support portion, and one end of the elastic member away from the movable member is connected to a side of the stop portion close to the chassis.

[0017] In one embodiment, the generator maintenance device also includes a fastener, the support portion is provided with a first fastening hole along a direction perpendicular to the chassis, the chassis is provided with a second fastening hole along a direction perpendicular to the chassis, and the fastener is passed through the first fastening hole and the second fastening hole to connect the support portion to the chassis.

[0018] In one embodiment, the guide mechanism includes two elastic members, the stop member includes two stop portions, and the movable member includes two movable portions;

[0019] The movable part is inserted into the guide hole, and the two stop parts are arranged on both sides of the support part along the preset direction. The two elastic members, the two movable parts and the two stop parts correspond to each other and are connected in sequence. The two side surfaces of the two movable parts facing away from each other approach each other in the direction close to the chassis to form the guide surface, and the two guide surfaces can respectively slide with the two side walls of the strip groove.

[0020] In one embodiment, the movable part has a convex ring on its circumference at one end close to the stopper, the convex ring protrudes parallel to the chassis in a direction away from the stopper, and the convex ring abuts against the chassis along the radial direction of the stator close to the rotor.

[0021] In one embodiment, the moving mechanism includes a driving part and a moving part which are arranged on the chassis, the driving part is connected to the moving part, and the driving part is used to drive the moving part to rotate around its axial direction to drive the chassis to move.

[0022] In one embodiment, the inspection assembly includes an inspection part and a maintenance part, wherein the inspection part is disposed on the chassis and is used to collect image information between the rotor and the stator;

[0023] The maintenance part is arranged on the chassis and is used for repairing the part to be maintained between the rotor and the stator.

[0024] In one embodiment, the inspection portion includes a plurality of cameras, at least some of the cameras are installed at both ends of the chassis along the preset direction; and / or, at least some of the cameras are installed on both sides of the chassis along the preset direction; and / or, at least some of the cameras are installed on the side of the chassis away from the guide surface.

[0025] In one embodiment, the maintenance part includes a mechanical arm and a maintenance component, the mechanical arm is arranged on the chassis, and the maintenance component is connected to an end of the mechanical arm away from the chassis.

[0026] During actual use of the above-mentioned generator maintenance device, the chassis is placed along a preset direction, and the guide mechanism is extended into the strip groove. Since the distance between the side walls of the strip groove gradually decreases along the radial direction of the stator toward the rotor, and the guide mechanism is arranged on the chassis and partially located in the strip groove and adapted to the side walls of the strip groove, the guide mechanism can only enter the strip groove from both ends of the strip groove along the preset direction. After entering the strip groove, the generator maintenance device can only be moved to both ends of the strip groove and then the guide mechanism can be taken out of the strip groove. Therefore, the guide mechanism can be adapted to the strip groove, and the entire generator maintenance device can be hung in the strip groove of the stator, and the chassis is driven to move by the moving mechanism. During the movement of the chassis, the maintenance component inspects the inner side of the stator. Therefore, the shape matching relationship between the guide mechanism and the strip groove ensures that the generator maintenance device can move normally inside the stator, and the sliding matching between the guide mechanism and the side wall of the strip groove enables the generator maintenance device to run in a preset direction and repair the gap between the stator and the rotor, without the need for maintenance personnel to enter the stator, and avoiding the generator maintenance device from falling and damaging the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic diagram of a generator maintenance device located between a stator and a rotor according to an embodiment.

[0028] FIG. 2 is a schematic structural diagram of the generator maintenance device in FIG. 1 .

[0029] FIG. 3 is a schematic structural diagram of the generator maintenance device in FIG. 1 from another perspective.

[0030] FIG. 4 is an enlarged view of the guide mechanism in the generator maintenance device in FIG. 1 .

[0031] FIG. 5 is an enlarged cross-sectional view of the movable member and the strip groove in cooperation with each other along the radial direction of the stator according to an embodiment.

[0032] FIG. 6 is an enlarged view of a cross section along the radial direction of the stator where a movable member cooperates with a strip groove according to another embodiment.

[0033] Description of Figure Numbers:

[0034] 100-Generator maintenance device;

[0035] 110- chassis; 111- guide hole; 112- second fastening hole; 113- moving groove;

[0036] 120-moving mechanism; 121-driving unit; 122-moving unit; 123-roller; 124-crawler;

[0037] 130-maintenance component; 131-inspection unit; 132-camera;

[0038] 140-guide mechanism; 141-movable member; 142-elastic member; 143-stop member; 144-support portion; 145-stop portion; 146-first fastening hole; 147-elastic groove; 148-movable portion; 149-convex ring;

[0039] 150-fasteners;

[0040] 160-guide surface;

[0041] 210 - stator; 211 - rotor; 212 - strip slots. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 on the present application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0048] The generator maintenance device 100 of the present application is suitable for a generator, wherein the generator includes a stator 210 and a rotor 211 that can be inserted into or pulled out of a stator hole, the stator 210 and the rotor 211 are arranged with a gap, the inner wall of the stator 210 has a plurality of strip grooves 212, the strip grooves 212 extend along the axial direction of the stator 210, and along the radial direction of the stator 210, the distance between two opposite side walls of the strip grooves 212 gradually decreases.

[0049] Refer to FIG. 2 , which shows a schematic structural diagram of a generator maintenance device 100 in an embodiment of the present application. The generator maintenance device 100 provided in an embodiment of the present application includes: a chassis 110 , a moving mechanism 120 , a maintenance component 130 and a guide mechanism 140 .

[0050] In the above-mentioned generator maintenance device 100, the moving mechanism 120 is connected to the chassis 110 and is used to drive the chassis 110 to move. The maintenance component 130 is arranged on the chassis 110 and is used to perform maintenance on the generator. The guide mechanism 140 is arranged on the chassis 110, and the guide mechanism 140 can be partially located in the strip groove 212. The guide mechanism 140 has two opposite guide surfaces 160, and the two guide surfaces 160 can be opposite to the two side walls of the strip groove 212. The distance between the two guide surfaces 160 gradually increases in the direction away from the chassis 110. The guide mechanism 140 is used to guide the movement of the chassis 110 in a preset direction, that is, inward along the radial direction of the stator 210, and the distance between the two guide surfaces 160 gradually decreases, wherein the preset direction is the extension direction of the strip groove, that is, the preset direction.

[0051] 1, 2, 3 and 5, in actual use of the generator maintenance device 100, the chassis 110 is placed along a preset direction, i.e., the axial direction of the stator 210, and the guide mechanism 140 is extended into the strip groove 212. Since the distance between the side walls of the strip groove 212 gradually decreases in the radial direction of the stator 210 toward the rotor 211, and the guide mechanism 140 is disposed on the chassis 110 and partially located in the strip groove 212, the two guide surfaces 160 are respectively opposite to the two side walls of the strip groove 212, and the distance between the two guide surfaces 160 gradually decreases in the radial direction of the stator 210. The guide mechanism 140 can only enter the strip groove 212 from the strip groove 212 along a preset direction, that is, from the axial ends of the stator 210. After entering the strip groove 212, the generator maintenance device 100 can only be moved to the two ends of the strip groove 212 and then the guide mechanism 140 can be taken out of the strip groove 212. Therefore, the guide mechanism 140 can be adapted to the strip groove 212, and the entire generator maintenance device 100 can be hung in the strip groove 212 of the stator 210. The chassis 110 is driven to move by the moving mechanism 120. During the movement of the chassis 110, the maintenance component 130 inspects the inner side of the stator 210. Therefore, through the shape matching relationship between the guide mechanism 140 and the strip groove 212, it is ensured that the generator maintenance device 100 can move normally inside the stator 210, and through the sliding matching between the guide mechanism 140 and the side wall of the strip groove 212, the generator maintenance device 100 can run along the preset direction, that is, the axial direction of the stator 210, and repair the gap between the stator 210 and the rotor 211, without the need for maintenance personnel to enter the stator 210, and avoiding the generator maintenance device 100 from falling and damaging the generator.

[0052] Specifically, the two guide surfaces 160 are respectively parallel to and opposite to the two side walls of the strip-shaped groove 212 .

[0053] Referring to FIGS. 3-5 , in one embodiment, the guide mechanism 140 includes a movable member 141, an elastic member 142, and a stopper 143. The stopper 143 is connected to the side of the chassis 110 away from the guide surface 160, that is, connected to the side of the chassis 110 close to the rotor 211. The chassis 110 is provided with a guide hole 111 perpendicular to the direction of the chassis 110, and the movable member 141 is inserted into the guide hole 111. One end of the elastic member 142 is connected to the stopper 143, and the other end is connected to the movable member 141. The movable member 141 has two opposite side surfaces, which are two guide surfaces 160, that is, the movable member 141 has two opposite guide surfaces 160, which are respectively opposite to the two side walls of the strip groove 212. The distance between the two guide surfaces 160 gradually decreases along the radial direction of the stator 210 to the inside, and the movable member 141 can be partially located in the strip groove 212 and adapted to the strip groove 212. Since the distance between the side walls of the strip groove 212 gradually decreases along the radial direction of the stator 210 toward the rotor 211, and the distance between the two guide surfaces 160 gradually decreases along the radial direction of the stator 210 toward the inside, and the movable member 141 is partially located in the strip groove 212 and adapted to the strip groove 212, the guide mechanism 140 can only enter the strip groove 212 from the strip groove 212 along the preset direction, that is, the axial ends of the stator 210. After entering the strip groove 212, the generator maintenance device 100 can only be moved to the two ends of the strip groove 212, and the guide mechanism 140 can be moved from the strip groove 212. Therefore, the entire generator maintenance device 100 can be hung in the strip groove 212 of the stator 210 through the matching of the movable part 141 and the strip groove 212. When the entire generator maintenance device 100 is hung on the top of the inner side of the stator 210, the movable part 141 is affected by gravity and abuts against the inclined side wall of the strip groove 212. At this time, the elastic force of the elastic part 142 makes the force between the movable part 141 and the side wall of the strip groove 212 smaller than the gravity of the entire generator maintenance device 100, thereby reducing the friction force when the movable part 141 and the side wall of the strip groove 212 slide together.

[0054] 3-5, in one embodiment, the stopper 143 includes a support portion 144 and a stopper 145. The support portion 144 is connected to the side of the chassis 110 away from the guide surface 160, that is, connected to the side of the chassis 110 close to the rotor 211, the stopper 145 is arranged on the side of the support portion 144, and the end of the elastic member 142 away from the movable member 141 is connected to the side of the stopper 145 close to the chassis 110. The support portion 144 is connected to a side of the chassis 110 close to the rotor 211, the stop portion 145 is connected to the side of the support portion 144, and the end of the elastic member 142 facing away from the movable member 141 is connected to a side of the stop portion 145 close to the chassis 110, so that, through the supporting effect of the support portion 144, the stop portion 145 is set on a side of the movable member 141 close to the rotor 211, so that the elastic member 142 can be set between the stop portion 145 and the movable member 141, ensuring that the direction of the elastic force of the elastic member 142 is perpendicular to the chassis 110.

[0055] 3-5 , in one embodiment, the generator maintenance device 100 further includes a fastener 150, the support portion 144 is provided with a first fastening hole 146 in a direction perpendicular to the chassis 110, the chassis 110 is provided with a second fastening hole 112 in a direction perpendicular to the chassis 110, and the fastener 150 is passed through the first fastening hole 146 and the second fastening hole 112, and is used to connect the support portion 144 to the chassis 110, thereby realizing that the support portion 144 can be detachably connected to the chassis 110, and further realizing that the guide mechanism 140 can be detachably connected to the chassis 110.

[0056] 3-6 , in one embodiment, the guide mechanism 140 includes two elastic members 142 , the stop member 143 includes two stop portions 145 , and the movable member 141 includes two movable portions 148 . The movable portion 148 is inserted into the guide hole 111, and the two stop portions 145 are arranged on both sides of the support portion 144 along a preset direction, that is, on both sides of the axial direction of the stator 210. The two elastic members 142, the two movable portions 148 and the two stop portions 145 correspond to each other and are connected in sequence. The two side surfaces of the two movable portions 148 that are opposite to each other are close to each other in the direction close to the chassis 110, that is, inwardly along the radial direction of the stator 210 to form a guide surface 160. The two guide surfaces 160 that are opposite to each other through the two movable portions 148 can respectively slide with the two side walls of the strip groove 212, so that the forces on both sides of the support portion 144 along the direction of movement of the chassis 110 and the strip groove 212 are balanced, thereby ensuring the stable cooperation between the guide mechanism 140 and the stator 210 during the movement of the generator maintenance device 100.

[0057] Referring to FIG. 4 , in one embodiment, a convex ring 149 is provided in the circumference of one end of the movable member 141 close to the stop portion 145. The convex ring 149 protrudes in a direction parallel to the chassis 110 away from the stop portion 145. The convex ring 149 abuts against the chassis 110 along the radial direction of the stator 210 close to the rotor 211, so that when the elastic member 142 pushes the movable member 141 toward the strip groove 212, the convex ring 149 abuts against the chassis 110, so that the movable member 141 is limited by the convex ring 149, preventing the movable member 141 from being pushed out of the guide hole 111 by the elastic member 142 and detaching from the chassis 110.

[0058] 2-3 , in one embodiment, the generator maintenance device 100 includes two guide mechanisms 140, which are respectively arranged at two ends of the chassis 110 along a preset direction, that is, the axial direction of the stator 210, so that both ends of the chassis 110 along the axial direction of the stator 210 can be slidably matched with the strip groove 212 through the guide mechanism 140, so that the guide mechanism 140 can stably guide the generator maintenance device 100 along the axial direction of the stator 210.

[0059] Referring to Figures 2-3, in one embodiment, the moving mechanism 120 includes a driving part 121 and a moving part 122 which are arranged on the chassis 110. The driving part 121 is connected to the moving part 122. The driving part 121 is used to drive the moving part 122 to rotate around its axial direction to drive the chassis 110 to move, so that the generator maintenance device 100 can drive the moving part 122 to rotate through the driving part 121, and the moving part 122 generates friction with the inner side of the stator 210, thereby causing the generator maintenance device 100 to move on the inner side of the stator 210.

[0060] 2-3 , in one embodiment, the moving portion 122 is a roller 123 . The roller 123 is disposed on the chassis 110 and rolls with the inner side of the stator 210 .

[0061] In another embodiment, the moving portion 122 is a track 124 disposed on the chassis 110 and rollingly engaged with the inner side of the stator 210 .

[0062] In another embodiment, the moving part 122 includes a roller 123 and a track 124 . The roller 123 and the track 124 are both disposed on the chassis 110 and are in rolling cooperation with the inner side of the stator 210 .

[0063] Referring to Fig. 2-3, in one embodiment, the inspection assembly 130 includes an inspection unit 131 and a maintenance unit (not shown). The inspection unit 131 is disposed on the chassis 110 to collect image information between the rotor 211 and the stator 210 for the operator to determine whether inspection is required. The maintenance unit is disposed on the chassis 110, and the operator can remotely control the maintenance unit to perform maintenance and repair on the part to be repaired between the stator 210 and the rotor 211, so that the operator can perform fault judgment through the inspection unit 131. At the same time, in the process of repairing the faulty part through the maintenance unit, the inspection unit 131 provides real-time images, which facilitates the operator to direct the maintenance unit to perform maintenance operations.

[0064] Referring to Fig. 2-3, in one embodiment, the inspection unit 131 includes a plurality of cameras 132, at least some of which are installed at both ends of the chassis 110 along a preset direction; and / or, at least some of the cameras 132 are installed at both sides of the chassis 110 along a preset direction; and / or, at least some of the cameras 132 are installed at a side of the chassis away from the guide surface 130. That is, the two ends and both sides of the chassis 110 along the axial direction of the stator 210 and the side of the chassis 110 away from the guide surface 130, the above three positions can be arbitrarily matched to install and arrange the cameras 132 to meet the needs of imaging observation, the side of the chassis 110 away from the guide surface 130 is the side of the chassis 110 close to the rotor 211, by installing cameras 132 at various locations in the circumferential direction of the chassis 110, the inner side wall of the stator 210 near the generator maintenance device 100 can be inspected by the circumferential cameras 132, and real-time images can be provided when the inner side wall of the stator 210 is repaired. By installing a camera 132 on one side of the chassis 110 close to the rotor 211 , the outer side wall of the rotor 211 near the generator maintenance device 100 can be inspected through the camera 132 , and a real-time image can be provided when the outer side wall of the rotor 211 is repaired.

[0065] In one embodiment, the maintenance unit includes a robotic arm (not shown) and a maintenance part (not shown). The robotic arm is disposed on the chassis 110. The maintenance part is connected to one end of the robotic arm away from the chassis 110. The robotic arm drives the maintenance part to perform maintenance and repair on the part to be repaired between the stator 210 and the rotor 211, so that the generator can be repaired by operating the maintenance part through the robotic arm. At the same time, the arm length of the robotic arm expands the scope of maintenance, so that the generator maintenance device 100 located on the inner wall of the stator 210 can also repair the rotor 211 set in a gap with the stator 210.

[0066] Specifically, the maintenance parts can be components such as a robot arm or an electric welding head. The robot arm can disassemble and assemble the components inside the stator 210, and the electric welding head can weld and fix the components inside the stator 210. Maintenance parts with different functions can be set according to actual conditions, which will not be elaborated here.

[0067] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A generator maintenance device, the generator comprising a stator and a rotor that can be inserted into or pulled out of a stator hole, the stator and the rotor are arranged with a gap, the inner wall of the stator has a plurality of strip grooves, and the strip grooves extend along the axial direction of the stator. ； Along the radial direction inward of the stator, the distance between two opposite side walls of the strip-shaped slot gradually decreases, characterized in that: The generator maintenance device comprises: Chassis; A moving mechanism, connected to the chassis, and used to drive the chassis to move; An overhaul component, disposed on the chassis, for overhauling the generator; A guide mechanism is arranged on the chassis, the guide component can be partially located in the strip groove, the guide mechanism has two opposite guide surfaces, the two guide surfaces can be opposite to the two side walls of the strip groove, the two guide surfaces are gradually spaced apart in a direction away from the chassis, and the guide mechanism is used to guide the movement of the chassis along a preset direction.

2. The generator maintenance device according to claim 1, It is characterized in that The guide mechanism includes a movable part, an elastic part and a stopper; The stopper is connected to a side of the chassis facing away from the guide surface; The chassis is provided with a guide hole in a direction perpendicular to the chassis, and the movable member is passed through the guide hole; One end of the elastic member is connected to the stop member, and the other end is connected to the movable member. The movable member has two opposite side surfaces, which are two guide surfaces. The movable member can be partially located in the strip groove and adapted to the strip groove.

3. The generator maintenance device according to claim 2, It is characterized in that The stopper comprises a supporting portion and a stopping portion; The support portion is connected to a side of the chassis away from the guide surface, the stop portion is connected to a side of the support portion, and one end of the elastic member away from the movable member is connected to a side of the stop portion close to the chassis.

4. The generator maintenance device according to claim 3, It is characterized in that The generator maintenance device also includes a fastener, the support portion is provided with a first fastening hole in a direction perpendicular to the chassis, the chassis is provided with a second fastening hole in a direction perpendicular to the chassis, and the fastener is passed through the first fastening hole and the second fastening hole to connect the support portion to the chassis.

5. The generator maintenance device according to claim 3, It is characterized in that The guide mechanism includes two elastic members, the stopper includes two stopper parts, and the movable member includes two movable parts; The movable part is inserted into the guide hole, and the two stop parts are arranged on both sides of the support part along the preset direction. The two elastic members, the two movable parts and the two stop parts correspond to each other and are connected in sequence. The two side surfaces of the two movable parts facing away from each other approach each other in the direction close to the chassis to form the guide surface, and the two guide surfaces can respectively slide with the two side walls of the strip groove.

6. The generator maintenance device according to claim 3, It is characterized in that The movable part has a convex ring in the circumferential direction of one end close to the stopper, the convex ring protrudes in a direction parallel to the chassis away from the stopper, and the convex ring abuts against the chassis.

7. The generator maintenance device according to claim 1, It is characterized in that The moving mechanism comprises a driving part and a moving part which are arranged on the chassis, the driving part is connected to the moving part, and the driving part is used to drive the moving part to rotate around its axial direction to drive the chassis to move.

8. The generator maintenance device according to any one of claims 1 to 7, It is characterized in that The inspection assembly includes an inspection part and a maintenance part, wherein the inspection part is arranged on the chassis and is used to collect image information between the rotor and the stator; The maintenance part is arranged on the chassis and is used for repairing the part to be maintained between the rotor and the stator.

9. The generator maintenance device according to claim 8, It is characterized in that The inspection unit includes a plurality of cameras, at least some of which are installed at both ends of the chassis along the preset direction; and / or at least some of which are installed at both sides of the chassis along the preset direction; And / or, at least part of the cameras are installed on a side of the chassis facing away from the guide surface.

10. The generator maintenance device according to claim 8, It is characterized in that The maintenance part comprises a mechanical arm and a maintenance component. The mechanical arm is arranged on the chassis, and the maintenance component is connected to an end of the mechanical arm away from the chassis.

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