Generator maintenance device and protection device of generator maintenance robot

Abstract

The utility model relates to a generator maintenance device and a protection device of a generator maintenance robot. The protection device comprises two positioning mechanisms, a tensioning mechanism, a rope and a sliding piece. The two positioning mechanisms are used for being arranged at the two ends of the generator in the axial direction. And at least one positioning mechanism is provided with a tensioning mechanism. The rope is used for being arranged in an air gap between a generator stator and a rotor in a penetrating mode, the two ends of the rope extend out of the air gap and are connected with the positioning mechanisms respectively, and the sliding part is arranged on the rope in a sliding mode and used for being connected with a maintenance robot. Wherein the positioning mechanism provided with the tensioning mechanism is indirectly connected with the rope through the tensioning mechanism. When the maintenance robot abnormally falls off in the air gap, the robot can be prevented from falling off and damaging the engine through the dragging effect of the rope.

Description

Technical Field

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

[0002] During the overhaul of the generator, the rotor needs to be regularly pulled out for inspection. Specifically, the rotor with a diameter of about 2 meters, a length of about 15.38 meters, and a weight of about 244 tons needs to be pulled out from the stator, and then the staff enters the stator chamber to carry out a series of inspections and tests.

[0003] However, the above maintenance method has the following disadvantages: it is time-consuming and requires a lot of manpower. In addition, since the minimum air gap between the stator and the rotor is only 58 mm, there is a risk of easily damaging the stator when the rotor is pulled through.

[0004] In the related art, a maintenance robot is arranged in the air gap between the stator and the rotor, and the maintenance robot is used to perform maintenance and testing inside the generator. However, there is a risk that the maintenance robot may fall off abnormally and damage the generator during movement. Summary of the invention

[0005] Based on this, it is necessary to provide a generator maintenance device and a protective device for the generator maintenance robot to address the problem in the related technology that there is a risk of abnormal falling off and damaging the generator during the movement of the maintenance robot.

[0006] A protection device for a generator maintenance robot, the protection device for the generator maintenance robot comprising:

[0007] Two positioning mechanisms are used to be arranged at two ends of the generator along the axial direction;

[0008] A tensioning mechanism, at least one of the positioning mechanisms is provided with the tensioning mechanism;

[0009] A rope, used to be passed through the air gap between the stator and the rotor of the generator, with two ends of the rope extending out of the air gap and connected to the two positioning mechanisms respectively; and

[0010] A sliding member, slidably disposed on the rope, the sliding member being used to be connected to the maintenance robot;

[0011] Wherein, the positioning mechanism provided with the tensioning mechanism is indirectly connected to the rope through the tensioning mechanism.

[0012] In one of the embodiments, the tensioning mechanism includes a winding member and a worm gear assembly, the worm gear assembly is arranged on the positioning mechanism, the winding member is connected to the worm wheel of the worm gear assembly, and the rope is wound around the winding member.

[0013] In one embodiment, the worm gear assembly is a worm gear assembly with a self-locking function.

[0014] In one embodiment, the tensioning mechanism includes two wire baffles, the winding member is arranged between the two wire baffles and is rotationally connected to the two wire baffles respectively, and the worm gear assembly is arranged on a side of one of the wire baffles away from the other wire baffle.

[0015] In one embodiment, the positioning mechanism includes a positioning member and a locking bolt, the positioning member has a clamping space, and the clamping space is clamped on the outer periphery of the fan seat along the axial direction of the fan seat of the generator;

[0016] The locking bolt is threadedly connected to the positioning member, and passes through the positioning member along the axial direction of the fan seat and extends into the annular groove on the axial end surface of the fan seat.

[0017] In one of the embodiments, the positioning mechanism includes a spring pin, which is disposed on the positioning member and passes through the positioning member along the axial direction of the fan seat and extends into the mounting hole of the fan seat.

[0018] In one of the embodiments, a roller is provided on the positioning member, and the positioning member is used to roll with the fan seat along the circumference of the fan seat through the roller.

[0019] In one of the embodiments, the protection device comprises an adjusting bracket, the tensioning mechanism is connected to the positioning member via the adjusting bracket, and the adjusting bracket is used to adjust the radial position of the rope along the generator.

[0020] A generator maintenance device comprises a maintenance robot, a cable and a protection device for the generator maintenance robot, wherein one end of the cable is connected to the maintenance robot and the other end extends out of an air gap, and the end of the cable close to the maintenance robot is fixedly connected to the sliding member.

[0021] In one of the embodiments, a pull rope is provided in the cable, one end of the pull rope is connected to the tail of the maintenance robot, and the other end is used to extend out of the air gap.

[0022] When the generator maintenance device and the protective device of the generator maintenance robot are actually installed, a sliding part can be firstly arranged on the rope, and the rope can be passed through the air gap between the stator and the rotor, and then a positioning mechanism can be arranged at both ends of the rotor or the stator, and a tensioning mechanism can be arranged on at least one positioning mechanism; then one end of the rope is connected to the tensioning mechanism, and the other end is directly or indirectly connected to the positioning mechanism, and finally the maintenance robot is connected to the sliding part, and the installation of the protective device of the maintenance robot is completed. When in use, the tightness of the rope can be adjusted by the tensioning mechanism, which is convenient for tightening the rope to improve the stability of the protective device. When the maintenance robot falls off abnormally in the air gap, the dragging effect of the rope can prevent the robot from falling and damaging the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of a generator maintenance robot installed on a generator in one embodiment.

[0024] Figure 2 Schematic diagram of the structure of the positioning mechanism and the tensioning mechanism in one embodiment.

[0025] Figure 3 Schematic diagram of the structure of a tensioning mechanism in one embodiment.

[0026] Figure numerals: 10, rotor; 20, stator; 30, fan seat; 40, maintenance robot; 50, cable; 60, protection device; 100, positioning mechanism; 110, positioning member; 111, clamping space; 120, locking bolt; 130, spring pin; 140, roller; 200, tensioning mechanism; 210, winding member; 220, worm gear assembly; 221, worm wheel; 222, worm; 223, hand wheel; 224, wire baffle; 225, adjustment bracket; 300, rope; 400, sliding member. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] See also Figure 1 and Figure 2 , a protection device 60 of a generator maintenance robot 40 provided in one embodiment of the present application includes two positioning mechanisms 100, a tensioning mechanism 200, a rope 300 and a sliding member 400. The two positioning mechanisms 100 are used to be arranged at both ends of the generator along the axial direction. A tensioning mechanism 200 is arranged on at least one positioning mechanism 100. The rope 300 is used to pass through the air gap between the stator and the rotor of the generator, and the two ends of the rope 300 extend out of the air gap and are respectively connected to the positioning mechanism 100. The sliding member 400 is slidably arranged on the rope 300, and the sliding member 400 is used to be connected to the maintenance robot 40. Among them, the positioning mechanism 100 provided with the tensioning mechanism 200 is indirectly connected to the rope 300 through the tensioning mechanism 200.

[0034] The sliding member 400 may be a sliding buckle, which is inserted into the rope 300 and can slide along the rope 300. In actual installation, the sliding buckle is first inserted into the rope 300, and then the rope 300 is passed through the air gap between the stator 20 and the rotor 10, and then the positioning mechanism 100 is respectively provided at both ends of the rotor 10 or the stator 20, and the tensioning mechanism 200 is provided on at least one positioning mechanism 100; then one end of the rope 300 is connected to the tensioning mechanism 200, and the other end is directly or indirectly connected to the positioning mechanism 100, and finally the maintenance robot 40 is connected to the sliding member 400, that is, the installation of the protection device 60 of the maintenance robot 40 is completed. When in use, the tightness of the rope 300 can be adjusted by the tensioning mechanism 200, so that the rope 300 can be tightened to improve the stability of the protection device 60. When the maintenance robot 40 falls off abnormally in the air gap, the dragging effect of the rope 300 can prevent the maintenance robot 40 from falling and damaging the engine.

[0035] In addition, it should be noted that when only one positioning mechanism 100 is provided with a tensioning mechanism 200, one end of the rope 300 is connected to the tensioning mechanism 200, and the other end is directly connected to the positioning mechanism 100. When the tensioning mechanism 200 located at one end of the rope 300 is adjusted, the tightness of the rope 300 can be adjusted.

[0036] When the two positioning mechanisms 100 are respectively provided with a tensioning mechanism 200, both ends of the rope 300 are indirectly connected to the positioning mechanism 100 through the tensioning mechanism 200. The tightness of the rope 300 can be adjusted by adjusting any one of the tensioning mechanisms 200, or by adjusting both tensioning mechanisms 200 at the same time.

[0037] In some embodiments, in combination Figure 3 The tensioning mechanism 200 includes a winding member 210 and a worm gear assembly 220 . The worm gear assembly 220 is disposed on the positioning mechanism 100 . The winding member 210 is connected to a worm wheel 221 of the worm gear assembly 220 . The rope 300 is wound around the winding member 210 .

[0038] Specifically, a handwheel 223 is provided at one end of the worm 222 of the worm gear assembly 220. Turning the handwheel 223 can drive the worm 222 to rotate, and then the worm 222 drives the worm wheel 221 to rotate, and then the worm wheel 221 drives the winding member 210 to rotate, so as to achieve the winding of the rope 300 on the winding member 210.

[0039] Furthermore, the worm gear assembly 220 is a worm gear assembly 220 with a self-locking function.

[0040] Among them, when the lead angle of the worm 222 is less than the equivalent friction angle between the meshing worm wheels 221, the worm gear assembly 220 has a self-locking property and can achieve reverse self-locking, that is, only the handwheel 223 can drive the worm 222 to rotate, and the worm 222 can then drive the worm wheel to rotate, but the worm wheel cannot drive the worm 222. When the maintenance robot 40 slides abnormally, the maintenance robot 40 hangs on the rope 300. At this time, the tension of the maintenance robot 40 on the rope 300 causes the rope 300 to apply a reverse rotational force to the worm wheel 221. Due to the self-locking property of the worm gear assembly 220, the worm wheel 221 cannot drive the worm 222 to rotate, that is, the rope 300 will not automatically loosen, which can effectively protect the maintenance robot 40 and prevent the maintenance robot 40 from falling and damaging the generator.

[0041] In some embodiments, the tensioning mechanism 200 includes two wire baffles 224 , the winding member 210 is disposed between the two wire baffles 224 and is rotationally connected to the two wire baffles 224 respectively, and the worm gear assembly 220 is disposed on a side of one of the wire baffles 224 away from the other wire baffle 224 .

[0042] In this embodiment, since the winding member 210 manually winds the rope 300 by turning the hand wheel 223, the winding member 210 is arranged between two wire baffles 224, which can prevent the rope 300 from being wound outside the winding member 210 when the rope 300 is manually wound, causing the rope 300 to be knotted.

[0043] Specifically, one ends of the two wire baffles 224 are interconnected to form a U-shaped structure. The winding member 210 is a columnar structure. Both ends of the winding member 210 pass through the wire baffles 224 respectively and are rotatably connected to the wire baffles 224. The wire baffles 224 are used to limit the rope 300 along the axial direction of the winding member 210.

[0044] In some embodiments, in combination Figure 1 and Figure 2 The positioning mechanism 100 includes a positioning member 110 and a locking bolt 120. The positioning member 110 has a clamping space 111, and the clamping space 111 is clamped on the outer periphery of the fan seat along the axial direction of the fan seat of the generator; the locking bolt 120 is threadedly connected to the positioning member 110 and passes through the positioning member 110 along the axial direction of the fan seat to extend into the annular groove on the axial end face of the fan seat 30.

[0045] It should be noted that the fan seat 30 is coaxially arranged with the rotor 10, and the fan seat 30 is a disc-shaped structure. The positioning member 110 can be clamped at any position of the outer circumference of the fan seat 30, and an annular groove is provided on the axial end surface of the fan seat 30. When the positioning member 110 is clamped on the fan seat 30, the locking bolt 120 can be rotated so that the locking bolt 120 extends into the annular groove without abutting against the groove bottom of the annular groove. At this time, due to the interference of the annular groove of the locking bolt 120, the positioning member 110 cannot fall off from the fan seat 30 in the radial direction of the fan seat 30. At the same time, the positioning member 110 can move in the circumferential direction of the fan seat 30, so as to drive the tensioning mechanism 200 to move in the circumferential direction of the rotor 10 to adjust the position of the rope 300.

[0046] Of course, after the position of the rope 300 is adjusted, the locking bolt 120 can be tightened again to fix the positioning member 110 on the fan base 30 .

[0047] Furthermore, the positioning mechanism 100 includes a spring pin 130 , which is disposed on the positioning member 110 and passes through the positioning member 110 along the axial direction of the fan seat so as to be inserted into the mounting hole on the fan seat 30 .

[0048] It should be noted that a plurality of mounting holes are provided on one end face of the fan seat 30 close to the spring pin 130, and the plurality of mounting holes are arranged in sequence along the circumference of the fan seat 30. After the positioning member 110 drives the rope 300 to move to the desired position, the spring pin 130 can be inserted into the mounting hole at the corresponding position on the fan seat 30 so as to quickly fix the positioning member 110.

[0049] Furthermore, a roller 140 is disposed on the positioning member 110 , and the positioning member 110 is used to roll with the fan seat 30 along the axial direction of the fan seat 30 via the roller 140 .

[0050] The roller 140 is provided to reduce the friction between the positioning member 110 and the fan seat 30 , so as to avoid the fan seat 30 being worn when the positioning member 110 is moved.

[0051] In some embodiments, the protection device 60 includes an adjustment bracket 225 , and the tensioning mechanism 200 is connected to the positioning member 110 via the adjustment bracket 225 . The adjustment bracket 225 is used to adjust the radial position of the rope 300 along the generator.

[0052] The adjusting bracket 225 may be a telescopic rod, by which the distance between the rope 300 and the rotor 10 of the generator can be adjusted, that is, the suspension height of the maintenance robot 40 can be adjusted to adapt to generators of different specifications.

[0053] Combination Figure 1 An embodiment of the present application also provides a generator maintenance device, including a maintenance robot 40, a cable 50 and a protective device 60 for the generator maintenance robot, one end of the cable 50 is connected to the maintenance robot 40, and the other end extends out of the air gap, and the end of the cable 50 close to the maintenance robot 40 is fixedly connected to the sliding member 400.

[0054] The maintenance robot 40 uses a permanent magnet or an electromagnetic coil to be adsorbed on the iron core on the surface of the stator 20 or the rotor 10, and moves forward along the slot. The sliding member 400 can be a sliding buckle, which is installed on the cable 50 100 mm away from the tail of the maintenance robot 40. When the maintenance robot 40 slides, the maintenance robot 40 can be dragged by the cable 50 to prevent the maintenance robot 40 from falling abnormally and damaging the generator.

[0055] In one embodiment of the present application, a pull rope is provided in the cable 50, one end of the pull rope is connected to the tail of the maintenance robot 40, and the other end extends out of the air gap. One end of the pull rope is connected to the tail of the maintenance robot 40, and mainly serves to drag the cable 50, avoid stress on the plug of the cable 50, and enhance the safety of the cable 50. Secondly, when the maintenance robot 40 fails, the maintenance robot 40 can be directly pulled out through the cable 50. In addition, the cable 50 slides on the rope 300 through the sliding member 400, and the rope 300 shares most of the weight of the cable, and can also prevent the cable 50 from being entangled with the maintenance robot 40 due to untimely recovery.

[0056] Wherein, the rope 300 and the pull rope can both be made of nylon rope.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed 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 protection device for a generator maintenance robot, characterized in that: The protection device comprises: Two positioning mechanisms are used to be arranged at two ends of the generator along the axial direction; A tensioning mechanism, at least one of the positioning mechanisms is provided with the tensioning mechanism; A rope, used to be passed through the air gap between the stator and the rotor of the generator, with two ends of the rope extending out of the air gap and connected to the two positioning mechanisms respectively; and A sliding member, slidably disposed on the rope, the sliding member being used to be connected to the maintenance robot; Wherein, the positioning mechanism provided with the tensioning mechanism is indirectly connected to the rope through the tensioning mechanism.

2. The protection device of the generator maintenance robot according to claim 1, characterized in that: The tensioning mechanism comprises a winding member and a worm gear assembly. The worm gear assembly is arranged on the positioning mechanism. The winding member is connected to the worm wheel of the worm gear assembly. The rope is wound around the winding member.

3. The protection device of the generator maintenance robot according to claim 2, characterized in that: The worm gear assembly is a worm gear assembly with a self-locking function.

4. The protection device for the generator maintenance robot according to claim 2, characterized in that: The tensioning mechanism comprises two wire blocking plates, the winding member is arranged between the two wire blocking plates and is rotationally connected to the two wire blocking plates respectively, and the worm gear assembly is arranged on a side of one of the wire blocking plates away from the other wire blocking plate.

5. The protection device for the generator maintenance robot according to claim 1, characterized in that: The positioning mechanism comprises a positioning member and a locking bolt, wherein the positioning member has a clamping space, and the clamping space is clamped on the outer periphery of the fan seat along the axial direction of the fan seat of the generator; The locking bolt is threadedly connected to the positioning member, and passes through the positioning member along the axial direction of the fan seat and extends into the annular groove on the axial end surface of the fan seat.

6. The protection device for the generator maintenance robot according to claim 5, characterized in that: The positioning mechanism comprises a spring pin, which is arranged on the positioning member and passes through the positioning member along the axial direction of the fan seat and extends into the mounting hole of the fan seat.

7. The protection device for the generator maintenance robot according to claim 5, characterized in that: The positioning member is provided with a roller, and the positioning member is used for rolling cooperation with the fan seat along the circumferential direction of the fan seat through the roller.

8. The protection device for the generator maintenance robot according to claim 5, characterized in that: The protection device comprises an adjusting bracket, the tensioning mechanism is connected to the positioning member via the adjusting bracket, and the adjusting bracket is used to adjust the position of the rope along the radial direction of the generator.

9. A generator maintenance device, characterized in that: The invention comprises a maintenance robot, a cable and a protection device for the generator maintenance robot as claimed in any one of claims 1 to 8, wherein one end of the cable is connected to the maintenance robot and the other end extends out of the air gap, and the end of the cable close to the maintenance robot is fixedly connected to the sliding member.

10. The generator maintenance device according to claim 9, characterized in that: A pull rope is arranged in the cable, one end of the pull rope is connected to the tail of the maintenance robot, and the other end is used to extend out of the air gap.

Images