Foreign matter picking tool

Abstract

The utility model relates to a foreign matter picking tool which comprises a lengthened part with the length adjustable in the longitudinal length direction of the lengthened part and a clamping jaw arranged at one end of the lengthened part in the direction of the lengthened part and capable of being opened or closed in a controlled mode. The lengthening piece can drive the clamping jaw to enter an air gap between a rotor and a stator of an engine from the outside, and foreign matter in the air gap is picked up through the clamping jaw. An operator can increase the length of the lengthening piece according to the position of the foreign matter in the air gap, so that the lengthening piece can drive the clamping jaw to enter the deeper position of the air gap, then the foreign matter located in the deeper position of the air gap is cleaned, and the cleaning effect on the generator is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of electrical maintenance technology, and in particular to a foreign object picking tool. Background Art

[0002] The generator includes a stator and a rotor. The rotor is installed inside the stator. After the generator is put into use, it needs to be cleaned regularly to ensure the normal use of the generator.

[0003] Traditionally, when cleaning a generator, the rotor is usually pulled out of the stator, and then the staff enters the stator chamber to clean it. After cleaning, the rotor is inserted into the stator. However, this method is only suitable for overhaul or regular maintenance of the generator. In daily use of the generator, foreign matter such as thin sheets often enter the air gap of the generator. Therefore, the generator also needs to be cleaned daily. If the rotor is pulled out of the stator for daily cleaning every time, it will undoubtedly waste a lot of manpower and material resources. Therefore, it is necessary to provide a tool for daily cleaning of the generator. Summary of the Invention

[0004] Based on this, it is necessary to provide a foreign matter picking tool to address the problem of inconvenience in daily cleaning of generators.

[0005] A foreign body picking tool, comprising:

[0006] The extension piece is adjustable in length in its longitudinal direction;

[0007] The clamping claw is arranged on one end of the extension piece in its own direction, and the clamping claw can be opened or closed in a controlled manner.

[0008] In one embodiment, the extension member includes at least two extension rods, and in the longitudinal direction of the extension rod, one end of each extension rod can be connected to or separated from one end of another extension rod.

[0009] In one embodiment, in the longitudinal direction of each extension rod, a threaded hole is provided on one end thereof, and a threaded section capable of cooperating with the threaded hole is provided on the other end thereof.

[0010] In one embodiment, the foreign object picking tool further includes a driving assembly, wherein the driving assembly is provided with the clamping claw at one end in its longitudinal direction and the other end is connected to the extension member, and the driving assembly is used to drive the clamping claw to open or close.

[0011] In one embodiment, the clamping jaw is rotatable about the axis of the drive assembly.

[0012] In one embodiment, the driving assembly includes an actuating member and a rotating member, wherein the actuating member is provided with the clamping claw at one end in the axial direction thereof and is connected to the rotating member at the other end;

[0013] The actuating member is used to drive the clamping jaws to open or close, and the rotating member is used to drive the actuating member to rotate around its own axis.

[0014] In one embodiment, the clamping jaw includes at least two clamping arms, one end of all the clamping arms is axially spaced around the axis of the actuating member and arranged on the actuating member, and the other ends of all the clamping arms can be controllably moved closer to or farther away from each other.

[0015] In one embodiment, the clamping jaw further comprises an elastic member, which elastically connects the clamping jaw and the driving assembly, and during the process of opening the clamping jaw, the elastic member deforms and accumulates elastic force for closing the clamping jaw.

[0016] In one embodiment, a camera is provided on the driving assembly, and the camera is used to collect image signals of the clamping jaws.

[0017] In one embodiment, the driving assembly is further provided with a lighting component, and the lighting component is provided on an end of the driving assembly close to the clamping jaw.

[0018] When the above-mentioned foreign object picking tool is working, the extension piece can drive the clamping claws to enter the air gap between the rotor and the stator of the engine through the outside world. When the clamping claws are in the air gap, the clamping claws can pick up foreign objects in the air gap and complete the picking of foreign objects in the clamping claws. After picking is completed, the foreign objects leave the air gap together with the clamping claws, completing the cleaning of foreign objects on the stator surface or the rotor surface. In the cleaning process, there is no need to pull the rotor out of the stator, saving time and effort. No collision will occur during the cleaning process, and the generator will not be damaged. It is especially suitable for daily cleaning of the generator.

[0019] Specifically, the end of the extension piece, in its longitudinal direction, that is away from the clamping jaws, can be grasped by an operator. The operator, outside the air gap, controls the movement of the drive assembly and the clamping jaws within the air gap by moving the extension piece. In actual use, due to the long rotor and stator lengths of the generator, some foreign objects may be located deep within the air gap. In this case, the operator can increase the length of the extension piece based on the location of the foreign object within the air gap, thereby allowing the extension piece to drive the clamping jaws deeper into the air gap, thereby cleaning the foreign object deep in the air gap and ensuring a clean generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a foreign object picking tool in some embodiments of the present application.

[0021] Description of reference numerals:

[0022] Clamping jaw 10; driving assembly 12; clamping arm 13; actuating member 14; rotating member 15. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0024] In the description of this 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 this 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 this application.

[0025] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0026] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this 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. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] 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 an intermediate 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 an intermediate element. 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 embodiment.

[0029] See Figure 1 , a foreign object picking tool provided in an embodiment of the present application. Before introducing the foreign object picking tool, we first briefly introduce some structures of the generator. The generator includes a stator and a rotor inserted in the stator. There is an air gap between the stator and the rotor. The rotor can rotate around a central axis in the stator. After the generator is used for a long time, a certain amount of foreign matter will accumulate in the air gap on the inner surface of the stator and the ventilation holes of the stator, and the outer surface of the rotor and the ventilation holes of the rotor. The foreign matter will affect the normal operation of the generator.

[0030] Therefore, the generator needs to regularly clean foreign matter in the air gap. The foreign matter picking tool provided by the embodiment of the present invention can pick up foreign matter in the air gap without extracting the rotor, thereby achieving the purpose of cleaning the engine. A detailed introduction is given below.

[0031] An embodiment of the present application provides a foreign object picking tool, which includes a clamping jaw 10 and an extension piece, and the length of the extension piece in its longitudinal direction is adjustable. The clamping jaw 10 is provided on one end of the extension piece in its own direction, and the clamping jaw 10 can be opened or closed in a controlled manner.

[0032] Among them, the extension piece can drive the clamp 10 into the air gap between the rotor and the stator of the engine through the outside world, and when the clamp 10 is in the air gap, the clamp 10 can pick up foreign objects in the air gap and complete the picking of foreign objects in the clamp 10. After the picking is completed, the foreign objects leave the air gap together with the clamp 10, completing the cleaning of foreign objects on the stator surface or the rotor surface. In the cleaning process, there is no need to pull the rotor out of the stator, which saves time and effort. No collision will occur during the cleaning process, and the generator will not be damaged.

[0033] Specifically, the end of the extension piece, which is farther from the clamping jaws 10 in its longitudinal direction, can be grasped by an operator. The operator, outside the air gap, controls the movement of the drive assembly 12 and the clamping jaws 10 within the air gap by moving the extension piece. In actual use, due to the long rotor and stator lengths of the generator, some foreign matter may be located deep within the air gap. In this case, the operator can increase the length of the extension piece based on the location of the foreign matter within the air gap, thereby allowing the extension piece to drive the clamping jaws 10 deeper into the air gap, thereby cleaning the foreign matter deep within the air gap and ensuring a clean generator.

[0034] It is understandable that the above-mentioned foreign object picking tool can be used, but is not limited to, to pick up foreign objects in the air gap of the generator. It can also be used to pick up foreign objects on the stator or rotor of the generator, or it can be used to pick up foreign objects in electrical equipment, which is not limited here.

[0035] In some embodiments of the present application, the extension member includes at least two extension rods. In the longitudinal direction of the extension rod, one end of each extension rod can be connected to or separated from one end of another extension rod. In other words, by connecting different numbers of extension rods, the extension rods can have different lengths. Specifically, one end of the first extension rod is connected to the clamping jaw 10, and the other end is used to connect to one end of the second extension rod. The other end of the second extension rod is used to connect to one end of the third extension rod, and this cycle repeats until the length of the extension member meets the desired length.

[0036] Optionally, the extension rod adopts a lightweight carbon fiber rod, that is, the extension rod is made of carbon fiber, which has the advantages of light weight, high strength, and corrosion resistance. It has been widely used in the installation and operation of nuclear power equipment. The single length of each extension rod is 2.5m.

[0037] Specifically in some embodiments, in its longitudinal direction, a threaded hole is provided on one end of each extension rod, and a threaded segment that can cooperate with the threaded hole is provided on the other end. The axis of the threaded hole and the threaded segment on each extension rod coincides with its own axis, so that the extension rod is connected to another extension rod or the drive assembly 12 through the cooperation of the threaded hole and the threaded segment.

[0038] It is understandable that in some other embodiments, the length of the extension piece can be adjusted by folding, or telescoping, etc., which is not limited here.

[0039] In some embodiments of the present application, the foreign object picking tool also includes a driving component 12, which is provided with a clamping jaw 10 at one end in its longitudinal direction and is connected to an extension piece at the other end. The driving component 12 is used to drive the clamping jaw 10 to open or close, thereby picking up foreign objects through the clamping jaw 10. By setting the clamping jaw 10 at the end of the driving component 12 away from the extension piece, the clamping jaw 10 can be more easily extended into the air gap, and the clamping jaw 10 is driven by the driving component 12 to clean the foreign objects.

[0040] Specifically, when the generator needs to be cleaned, the jaws 10 can be extended from the outside into the air gap between the rotor and the stator, and when the jaws 10 move to the position of the foreign object in the air gap, the driving component 12 drives the jaws 10 to open, so that the foreign object is located in the jaws 10, and then the jaws 10 are closed to clamp the foreign object in the air gap. After clamping the foreign object, the foreign object is moved out of the air gap together with the jaws 10, completing the picking up of the foreign object and cleaning of the generator.

[0041] In the embodiment of the present application, the jaw 10 is rotatable around the axis of the drive assembly 12. During actual use, the position of the foreign object in the air gap is not fixed. After the jaw 10 is extended into the air gap, there may be a situation where the jaw 10 cannot clamp the foreign object and it is inconvenient. At this time, the jaw 10 can be rotated to adjust the posture and angle of the jaw 10, so that the jaw 10 can clamp the foreign object more accurately.

[0042] In some embodiments, the drive assembly 12 includes an actuating member 14 and a rotating member 15. The actuating member 14 has the jaws 10 mounted on one end along its axis and is connected to the rotating member 15 at the other end. The actuating member 14 is used to drive the jaws 10 to open or close, while the rotating member 15 is used to drive the actuating member 14 to rotate about its axis. As a result, after the jaws 10 enter the air gap, the rotating member 15 can drive the actuating member 14 and the jaws 10 to rotate together, thereby adjusting the posture and angle of the jaws 10 to facilitate the jaws 10 to pick up foreign objects.

[0043] During actual use, the driving component 12 needs to drive the jaws 10 to an open state through electricity or pneumatic means. If a power outage or air outage occurs during the process of opening the jaws 10, the jaws 10 will not be able to close. The jaws 10 that are always open will interfere with the stator or rotor, making it impossible to remove the jaws 10 from the air gap.

[0044] To this end, the jaws 10 further include an elastic member that elastically connects the jaws 10 to the drive assembly 12. During the opening process of the jaws 10, the elastic member deforms and accumulates an elastic force to close the jaws 10. Thus, if the drive assembly 12 malfunctions and cannot close the jaws 10, the elastic force of the elastic member gradually closes the jaws 10, allowing the jaws 10 to be easily removed from the air gap.

[0045] Specifically, the clamping jaw 10 includes at least two clamping arms 13, one end of which is movably mounted on the actuating member 14 and is circumferentially spaced around the axis of the actuating member 14. During the movement of one end of each clamping arm 13, the other end of the clamping arm 13 can approach or move away from the other clamping arms 13, so that the other ends of all the clamping arms 13 can be controlled to approach or move away from each other, thereby completing the closing or opening of the clamping jaw 10. The elastic member elastically connects the clamping arm 13 and the driving assembly 12. During the rotation of the clamping arm 13, the elastic member will stretch or compress the elastic member, so that the elastic member accumulates elastic force for the clamping arms 13 to approach each other.

[0046] In some embodiments of the present application, a camera is provided on the drive assembly 12, and the camera is used to collect image signals at the clamp 10. The image collected by the camera is transmitted to a monitor located outside the air gap via wired or wireless means. The operator can observe the picking up and operation of foreign objects by the clamp 10 in real time by observing the screen on the monitor, and then can operate the extension piece to change the position and state of the clamp 10, thereby improving the accuracy of the clamp 10 in picking up foreign objects.

[0047] In some embodiments of the present application, in order to make the image captured by the camera clearer, a lighting component is also provided on the driving component 12. The lighting component is provided on one end of the driving component 12 close to the clamp 10, so that the lighting component can fill in the light at the clamp 10, so that the camera can capture the image at the clamp 10 more clearly, thereby making the operator's operation of the foreign object picking tool more precise, thereby improving the accuracy of the clamp 10 in picking up foreign objects.

[0048] The above-mentioned foreign body picking tool has at least the following advantages:

[0049] When the foreign object picking tool is working, the extension piece can drive the clamping jaw 10 to enter the air gap between the rotor and the stator of the engine through the outside world. When the clamping jaw 10 is in the air gap, the clamping jaw 10 can pick up the foreign objects in the air gap and complete the picking of the foreign objects in the clamping jaw 10. After the picking is completed, the foreign objects leave the air gap together with the clamping jaw 10, completing the cleaning of foreign objects on the stator surface or the rotor surface. In the cleaning process, there is no need to pull the rotor out of the stator, which saves time and effort. No collision will occur during the cleaning process, and the generator will not be damaged.

[0050] Specifically, the end of the extension piece, which is farther from the clamping jaws 10 in its longitudinal direction, can be grasped by an operator. The operator, outside the air gap, controls the movement of the drive assembly 12 and the clamping jaws 10 within the air gap by moving the extension piece. In actual use, due to the long rotor and stator lengths of the generator, some foreign matter may be located deep within the air gap. In this case, the operator can increase the length of the extension piece based on the location of the foreign matter within the air gap, thereby allowing the extension piece to drive the clamping jaws 10 deeper into the air gap, thereby cleaning the foreign matter deep within the air gap and ensuring a clean generator.

[0051] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0052] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A foreign body picking tool, characterized in that: The foreign body picking tool comprises: The extension piece is adjustable in length in its longitudinal direction; A clamping jaw (10) is provided on one end of the extension member in its own direction, and the clamping jaw (10) can be opened or closed in a controlled manner; The foreign body picking tool further comprises a driving assembly (12), wherein the driving assembly (12) is provided with the clamping jaw (10) at one end in its longitudinal direction and the other end is connected to the extension member, and the driving assembly (12) is used to drive the clamping jaw (10) to open or close.

2. The foreign matter picking tool according to claim 1, characterized in that: The extension member includes at least two extension rods. In the longitudinal direction of the extension rod, one end of each extension rod can be connected to or separated from one end of another extension rod.

3. The foreign matter picking tool according to claim 2, characterized in that: In the longitudinal direction of the extension rod, one end of each extension rod is provided with a threaded hole, and the other end is provided with a threaded section that can match with the threaded hole.

4. The foreign matter picking tool according to claim 1, characterized in that: The clamping jaw (10) is rotatable around the axis of the drive assembly (12).

5. The foreign matter picking tool according to claim 4, characterized in that: The driving assembly (12) includes an operating member (14) and a rotating member (15); the operating member (14) is provided with the clamping claw (10) at one end in the axial direction thereof, and the other end is connected to the rotating member (15); The actuating member (14) is used to drive the clamping jaws (10) to open or close, and the rotating member (15) is used to drive the actuating member (14) to rotate around its own axis.

6. The foreign matter picking tool according to claim 5, characterized in that: The clamping jaw (10) comprises at least two clamping arms (13), one end of all the clamping arms (13) being axially spaced and arranged on the actuating member (14) around the axis of the actuating member (14), and the other ends of all the clamping arms (13) being controllably movable toward or away from each other.

7. The foreign matter picking tool according to claim 1, characterized in that: The clamping jaw (10) further comprises an elastic member, which elastically connects the clamping jaw (10) and the driving assembly (12), and when the clamping jaw (10) is opened, the elastic member is deformed and accumulates an elastic force for closing the clamping jaw (10).

8. The foreign matter picking tool according to claim 1, characterized in that: The driving component (12) is provided with a camera, and the camera is used to collect image signals of the clamping claw (10).

9. The foreign matter picking tool according to claim 1, characterized in that: The driving assembly (12) is also provided with a lighting component, and the lighting component is provided on one end of the driving assembly (12) close to the clamping claw (10).

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