A device for replacing an exciter brush of a generator

Abstract

The application discloses a generator excitation end carbon brush replacing device, which comprises a rotating handle assembly, a sliding support frame, a lock head, a fixed support frame, a carbon brush mounting assembly, a lever assembly and a first elastic member; the rotating handle assembly is rotationally connected with the sliding support frame; the bottom end of the fixed support frame is provided with a lock groove; the lock head is fixedly connected with the rotating handle assembly; the sliding support frame is inserted into the fixed support frame, and the lock head can pass through the lock groove; the carbon brush mounting assembly is fixedly connected with the sliding support frame; the lever assembly is arranged between the carbon brush mounting assembly and the sliding support frame, and the driven end of the lever assembly extends into the interior of the carbon brush mounting assembly; the first elastic member is arranged on the carbon brush mounting assembly and presses the driving end of the lever assembly; and the driving end of the lever assembly is in contact with the rotating handle assembly. The application can quickly disassemble and replace the carbon brush, and the operation is simple; when overhauling and disassembling, the carbon brush is automatically fixed in the brush box, the carbon brush is prevented from being taken out of the brush box, and the overhauling work of the overhauling personnel is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of generator excitation structure maintenance, and particularly relates to a generator excitation end carbon brush replacement device. BACKGROUND

[0002] The carbon brush is an important component of the generator excitation system. Due to long-time contact with the high-speed rotating slip ring, the carbon brush is prone to abnormal operating conditions such as sparking, poor contact, and severe wear, which leads to unstable reactive power of the generator, voltage fluctuation, and even loss of excitation of the generator, resulting in phase advance operation or even shutdown of the generator. Therefore, improper or inadequate maintenance of the carbon brush replacement may cause loss of excitation, thereby leading to forced shutdown. Therefore, the carbon brush replacement and maintenance of the generator are particularly important.

[0003] The original generator current collection slip ring is divided into positive and negative parts, each of which has six groups of carbon brushes, each group having three carbon brushes, and a total of 36 carbon brushes. The carbon brushes are supported by brush holders and fastened by U-shaped clamps. The carbon brush braids are fixed to the brush holders by screws. In daily use, the powder generated by the wear of the carbon brushes is attached to the U-shaped clamps and the brush holders. In addition, the carbon brushes have conductivity and lubricity, which greatly hinders the maintenance work. Therefore, a box-type brush holder structure is provided in the prior art, which can replace one group (four) of carbon brushes at a time. However, the box-type brush holder structure needs to rely on special tools provided by the manufacturer for disassembly and replacement of the carbon brushes. A simple operation brush holder with magnetism is used to disassemble the brush box during the replacement of the carbon brushes. During the replacement process, the operator needs to be skilled, and the operator is required to have high skills. After long-term operation of the generator, the magnetic force of the brush holder may be generated, which may cause the brush box to fall off. In addition, the existing technology may cause the carbon brushes to fall out of the brush box during the disassembly of the brush box. SUMMARY

[0004] The present application provides a generator excitation end carbon brush replacement device, which solves the technical problems in the prior art that the box-type brush holder structure needs to rely on special tools provided by the manufacturer for disassembly and replacement of the carbon brushes, needs to rely on skilled operators, requires high skills of the operators, and may cause the brush box to fall off due to the generation of the magnetic force of the brush holder after long-term operation of the generator. The carbon brushes may fall out of the brush box during the disassembly. The carbon brushes can be quickly disassembled and replaced by a simple rotating action, without the need for special tools. The operation is simple, the requirement for the operator is low, the brush box is locked after installation, the brush box is prevented from falling off, the carbon brushes are automatically fixed in the brush box during the disassembly, the carbon brushes are prevented from falling out of the brush box, and the maintenance work of the maintenance personnel is facilitated.

[0005] The application provides a generator excitation end carbon brush replacement device, which comprises a handle assembly, a sliding support frame, a lock head, a fixed support frame, a carbon brush mounting assembly, a lever assembly and a first elastic member; the handle assembly penetrates through the sliding support frame and is rotationally connected with the sliding support frame; the fixed support frame is fixedly connected to the generator excitation end, and a lock groove is formed in the bottom end of the fixed support frame; the lock head is fixedly connected to the end of the handle assembly; the sliding support frame is inserted into the fixed support frame, and the lock head can pass through the lock groove; the carbon brush mounting assembly is fixedly connected with the sliding support frame; the lever assembly is arranged between the carbon brush mounting assembly and the sliding support frame, and the driven end of the lever assembly extends into the interior of the carbon brush mounting assembly; the bottom end of the first elastic member is connected to the outer side surface of the carbon brush mounting assembly, the top end of the first elastic member extrudes the driving end of the lever assembly, and the driving end of the lever assembly is in contact with the handle assembly; the handle assembly has two working positions of a working position and a maintenance position; when the handle assembly is rotated to the working position, the handle assembly drives the lock head to rotate relative to the lock groove, so that the lock head is locked with the lock groove, thereby enabling the sliding support frame to be clamped with the fixed support frame through the handle assembly, and at the same time, the handle assembly extrudes the driving end of the lever assembly and the first elastic member, so that the driven end of the lever assembly is retracted and separated from the interior of the carbon brush mounting assembly; when the handle assembly is rotated to the maintenance position, the handle assembly drives the lock head to rotate relative to the lock groove, so that the lock head is unlocked with the lock groove, thereby enabling the sliding support frame to slide relative to the fixed support frame, and at the same time, the handle assembly does not extrude the driving end of the lever assembly, the first elastic member lifts the driving end of the lever assembly, so that the driven end of the lever assembly extends into the interior of the carbon brush mounting assembly.

[0006] In a possible implementation, the handle assembly comprises a handle and a rotating shaft; one end of the rotating shaft is fixedly connected to the handle, and the other end of the rotating shaft penetrates through the sliding support frame and is rotationally connected with the sliding support frame; the lock head is fixedly connected to the end of the rotating shaft away from the handle; a groove is formed in the outer side of the rotating shaft inwardly; when the handle assembly is in the maintenance position, the driving end of the lever assembly extends into the groove under the extrusion of the first elastic member; when the handle assembly is in the working position, the rotating shaft drives the groove to rotate, so that the driving end of the lever assembly is separated from the groove and is extruded by the outer side of the rotating shaft.

[0007] In a possible implementation, the carbon brush mounting assembly comprises a brush box and a plurality of second elastic members; the brush box is internally provided with a plurality of carbon brush grooves, and the brush box is provided with the lever assembly on the side thereof; the second elastic members are arranged in the carbon brush grooves and can press the carbon brushes arranged in the carbon brush grooves; each of the carbon brush grooves is provided with a through hole in a direction close to the lever assembly, the driven end of the lever assembly extends into the plurality of through holes; and the brush box is fixedly connected with the sliding support frame.

[0008] In a possible implementation, the lever assembly comprises a U-shaped sleeve, a rotating shaft, a plurality of straight connecting rods, a plurality of bent connecting rods and a plurality of convex heads; the rotating shaft is arranged on the side of the brush box and sequentially penetrates through the plurality of straight connecting rods and the plurality of bent connecting rods and is rotatably connected with the straight connecting rods and the bent connecting rods; one end of each of the straight connecting rods and the bent connecting rods converges and is fixedly connected with the U-shaped sleeve, and the other end of each of the straight connecting rods and the bent connecting rods is separately arranged and fixedly connected with the convex head, and the convex head extends into the through hole; the first elastic member is arranged in the U-shaped sleeve; when the handle assembly is rotated to the working position, the handle assembly presses the U-shaped sleeve and the first elastic member, so that the end of the convex head is retracted into the through hole; when the handle assembly is rotated to the maintenance position, the handle assembly does not press the U-shaped sleeve, and the first elastic member lifts the U-shaped sleeve, so that the end of the convex head penetrates through the through hole and extends into the interior of the carbon brush groove.

[0009] In a possible implementation, the distance between the rotating shaft and the convex head is smaller than the distance between the rotating shaft and the U-shaped sleeve.

[0010] In a possible implementation, the handle assembly further comprises a third elastic member and a protective sleeve; the third elastic member is sleeved outside the top end of the rotating shaft, one end of the third elastic member is clamped with the top end of the sliding support frame, and the other end of the third elastic member is clamped with the bottom end of the handle; the protective sleeve is outside the third elastic member and is fixedly connected with the handle.

[0011] In a possible implementation, the interior of the fixed support frame is provided with a sliding groove; the sliding support frame is inserted into the sliding groove and is in sliding connection with the sliding groove.

[0012] One or more technical solutions provided in the present application have at least the following technical effects or advantages:

[0013] The application adopts a rotating handle assembly, a sliding support frame, a lock head, a fixed support frame, a carbon brush mounting assembly, a lever assembly and a first elastic member; the rotating handle assembly penetrates through the sliding support frame and is rotationally connected with the sliding support frame; the fixed support frame is fixedly connected to the excitation end of the generator, and a lock groove is formed in the bottom end of the fixed support frame; the lock head is fixedly connected to the end of the rotating handle assembly; the sliding support frame is inserted into the fixed support frame, and the lock head can pass through the lock groove; the carbon brush mounting assembly is fixedly connected with the sliding support frame; the rotating handle assembly can drive the sliding support frame to move as a whole, so that the sliding support frame is inserted into the fixed support frame, and then the rotating handle assembly is rotated to drive the lock head to rotate relative to the lock groove, thereby achieving the locking between the lock head and the lock groove, and finally achieving the locking between the sliding support frame and the fixed support frame;

[0014] The lever assembly is arranged between the carbon brush mounting assembly and the sliding support frame, and the driven end of the lever assembly extends into the interior of the carbon brush mounting assembly; the bottom end of the first elastic member is connected to the outer side surface of the carbon brush mounting assembly, and the top end of the first elastic member presses the driving end of the lever assembly, and the driving end of the lever assembly is in contact with the rotating handle assembly;

[0015] The rotating handle assembly has two working positions of a working position and a maintenance position;

[0016] When the rotating handle assembly is rotated to the working position, the rotating handle assembly drives the lock head to rotate relative to the lock groove, so that the lock head is locked with the lock groove, and then the sliding support frame is clamped with the fixed support frame through the rotating handle assembly, that is, the relative locking between the sliding support frame and the fixed support frame is achieved, at the same time, the driving end of the lever assembly and the first elastic member are pressed by the rotating handle assembly, so that the driven end of the lever assembly is retracted and away from the interior of the carbon brush mounting assembly, no extrusion force is generated on the carbon brush in the carbon brush mounting assembly, at this time, the carbon brush mounting assembly is also fixedly connected to the excitation end of the generator, the carbon brush in the carbon brush mounting assembly contacts the excitation end of the generator, and the generator is facilitated to generate power;

[0017] When the rotating handle assembly is rotated to the maintenance position, the rotating handle assembly drives the lock head to rotate relative to the lock groove, so that the lock head is unlocked with the lock groove, and then the sliding support frame can slide relative to the fixed support frame, that is, at this time, the rotating handle assembly is pulled outward, so that the sliding support frame is pulled out of the fixed support frame, at the same time, the driving end of the lever assembly is not pressed by the rotating handle assembly, the driving end of the lever assembly is lifted by the first elastic member, so that the driven end of the lever assembly extends into the interior of the carbon brush mounting assembly, and the driven end of the lever assembly extrudes the carbon brush in the carbon brush mounting assembly through the extrusion of the first elastic member, so that the carbon brush cannot be pulled out of the carbon brush mounting assembly in the process of pulling out the sliding support frame and the carbon brush mounting assembly.

[0018] This invention effectively solves the technical problems of existing box-type brush holder structures, which require specialized tools from the manufacturer for disassembly and replacement of carbon brushes, demand skilled operators, and are prone to brush holder detachment due to magnetic force generated after long-term generator operation. Furthermore, it addresses the issue of carbon brushes easily slipping out of the brush holder during disassembly by the simple rotation action of the new technology. This new technology allows for quick disassembly and replacement of carbon brushes without the need for specialized tools, simplifying operation and reducing operator skill requirements. The brush holder is locked in place after installation to prevent detachment, and during maintenance and disassembly, the carbon brushes are automatically secured within the brush holder, facilitating maintenance work. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 An isometric view of a generator excitation end carbon brush replacement device provided in an embodiment of this application;

[0021] Figure 2 A side view of a generator excitation end carbon brush replacement device provided in an embodiment of this application;

[0022] Figure 3 A front view of a generator excitation end carbon brush replacement device provided in an embodiment of this application;

[0023] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0024] Figure 5 for Figure 3 Rear view of the device in its working position after the fixed support frame has been removed;

[0025] Figure 6 for Figure 3 Rear view of the vehicle in the maintenance position after the fixed support frame has been removed;

[0026] Figure 7 for Figure 6 Axonometric view of the device in the maintenance position after the handle has been removed;

[0027] Figure 8 An isometric view of the lever assembly and rotating shaft in the maintenance position as provided in the embodiments of this application;

[0028] Figure 9The shaft view of the lever assembly when the rotating shaft is in the working position is provided for the embodiment of the present application.

[0029] Figure 10 The shaft view of the brush box is provided for the embodiment of the present application.

[0030] Figure 11 The shaft view of the fixed support frame is provided for the embodiment of the present application.

[0031] Figure 12 The structural schematic view of the second elastic member is provided for the embodiment of the present application.

[0032] Fig. 1 is a rotating handle assembly; 11 is a handle; 12 is a rotating shaft; 121 is a groove; 13 is a third elastic member; 14 is a protective sleeve; 2 is a sliding support frame; 3 is a lock head; 4 is a fixed support frame; 41 is a lock groove; 42 is a sliding groove; 5 is a carbon brush installation assembly; 51 is a brush box; 511 is a carbon brush groove; 512 is a through hole; 513 is a clamping groove; 52 is a second elastic member; 521 is a clamping head; 6 is a lever assembly; 61 is a U-shaped sleeve; 62 is a rotating shaft; 63 is a straight connecting rod; 64 is a bent connecting rod; 65 is a protruding head; 66 is a fixed buckle; 7 is a first elastic member. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0034] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] ReferenceFigures 1-12The embodiment of the application provides a generator excitation end carbon brush replacement device, which comprises a rotating handle assembly 1, a sliding support frame 2, a lock head 3, a fixed support frame 4, a carbon brush mounting assembly 5, a lever assembly 6 and a first elastic member 7. The rotating handle assembly 1 penetrates through the sliding support frame 2 and is rotationally connected with the sliding support frame 2. The fixed support frame 4 is fixedly connected to the generator excitation end, and a lock groove 41 is formed in the bottom end of the fixed support frame 4. The lock head 3 is fixedly connected to the end of the rotating handle assembly 1. The sliding support frame 2 is inserted into the fixed support frame 4, and the lock head 3 can pass through the lock groove 41. The carbon brush mounting assembly 5 is fixedly connected with the sliding support frame 2. The lever assembly 6 is arranged on the carbon brush mounting assembly 5 and between the carbon brush mounting assembly 5 and the sliding support frame 2, and the driven end of the lever assembly 6 extends into the inside of the carbon brush mounting assembly 5. The bottom end of the first elastic member 7 is connected to the outer side surface of the carbon brush mounting assembly 5, the top end of the first elastic member 7 presses the driving end of the lever assembly 6, and the driving end of the lever assembly 6 is in contact with the rotating handle assembly 1. The rotating handle assembly 1 has two working positions of a working position and a maintenance position. When the rotating handle assembly 1 is rotated to the working position, the rotating handle assembly 1 drives the lock head 3 to rotate relative to the lock groove 41, so that the lock head 3 is locked with the lock groove 41, and the sliding support frame 2 is clamped with the fixed support frame 4 through the rotating handle assembly 1. Meanwhile, the driving end of the lever assembly 6 and the first elastic member 7 are pressed by the rotating handle assembly 1, so that the driven end of the lever assembly 6 is retracted and leaves the inside of the carbon brush mounting assembly 5. When the rotating handle assembly 1 is rotated to the maintenance position, the rotating handle assembly 1 drives the lock head 3 to rotate relative to the lock groove 41, so that the lock head 3 is unlocked with the lock groove 41, and the sliding support frame 2 can slide relative to the fixed support frame 4. Meanwhile, the driving end of the lever assembly 6 is not pressed by the rotating handle assembly 1, the driving end of the lever assembly 6 is lifted by the first elastic member 7, and the driven end of the lever assembly 6 extends into the inside of the carbon brush mounting assembly 5.The structure of the lock head 3 in the embodiment of the application comprises two small protrusions, that is, the two small protrusions are fixedly connected to the outer side of the end of the handle assembly 1, the structure of the lock slot 41 comprises a plug hole and small through grooves arranged on both sides of the plug hole, the two small through grooves are communicated with the plug hole, the end of the handle assembly 1 can be inserted into the plug hole, and at the same time, the two small protrusions can pass through the two small through grooves, so that the two small protrusions are driven to rotate relative to the two small through grooves through the rotation of the handle assembly 1, the small protrusions are clamped on the outer side of the lock slot 41, the lock head 3 is locked with the lock slot 41, and the clamping between the sliding support frame 2 and the fixed support frame 4 is realized; the first elastic member 7 is selected to be a spring, and specifically in use, when the carbon brush needs to be overhauled and replaced, the handle assembly 1 is rotated to the overhauling position, at this time, the two small protrusions are rotated to the positions corresponding to the two small through grooves, the lock head 3 is convenient to pull out of the lock slot 41, and at the same time, when the handle assembly 1 is rotated to the overhauling position, the driving end of the lever assembly 6 is not pressed, so that the driving end of the lever assembly 6 is popped up upward under the elastic force of the first elastic member 7, the driven end of the lever assembly 6 is inserted into the inside of the carbon brush mounting assembly 5, the side surface of the carbon brush inside is pressed, the carbon brush is pressed in the inside of the carbon brush mounting assembly 5, at this time, when the handle assembly 1 is pulled out as a whole, the sliding support frame 2 drives the carbon brush mounting assembly 5 to pull out as a whole, and the carbon brush is not pulled out in the process of pulling out; when the overall device needs to be installed after the replacement of the carbon brush is completed, first, the handle assembly 1 is held, the sliding support frame 2 is aligned with the fixed support frame 4 and is inserted into the fixed support frame 4, at the same time, the lock head 3 also passes through the lock slot 41, then the handle assembly 1 is rotated to the working position, the lock head 3 is clamped on the outer side of the lock slot 41, the locking is realized, and at the same time, after the handle assembly 1 is rotated to the working position, the driving end of the lever assembly 6 is pressed, the first elastic member 7 is compressed, and then the driven end of the lever assembly 6 is extended from the inside of the carbon brush mounting assembly 5, the carbon brush is not pressed any more, and the normal work of the carbon brush is ensured.

[0036] With reference to Figures 1-9The handle assembly 1 comprises a handle 11 and a rotating shaft 12; one end of the rotating shaft 12 is fixedly connected to the handle 11, and the other end of the rotating shaft 12 penetrates through the sliding support frame 2 and is rotationally connected with the sliding support frame 2; the lock head 3 is fixedly connected to the end of the rotating shaft 12 away from the handle 11; a recess 121 is formed in the outer side of the rotating shaft 12 inwardly; when the handle assembly 1 is in the maintenance position, the driving end of the lever assembly 6 is inserted into the recess 121 under the extrusion of the first elastic member 7; when the handle assembly 1 is in the working position, the rotating shaft 12 drives the recess 121 to rotate, so that the driving end of the lever assembly 6 is separated from the recess 121 and is extruded by the outer side of the rotating shaft 12. In the embodiment of the application, the recess 121 is arranged on the outer side of the rotating shaft 12, and the switching between the maintenance position and the working position is realized through the rotation of the recess 121, that is, when the rotating shaft 12 rotates to the working position, the recess 121 is rotated to be separated from the driving end of the lever assembly 6, at this time, the driving end of the lever assembly 6 is extruded by the outer side of the rotating shaft 12; when the rotating shaft 12 rotates to the maintenance position, the recess 121 is rotated to face the driving end of the lever assembly 6, so that the driving end of the lever assembly 6 enters the space of the recess 121 under the action of the first elastic member 7, that is, at this time, the driving end of the lever assembly 6 moves away from the carbon brush mounting assembly 5, and then the driven end of the lever assembly 6 is inserted into the carbon brush mounting assembly 5 to extrude the carbon brush, so that the carbon brush does not fall off during the pulling-out process of the whole device.

[0037] With reference to Figures 1-3 , 5-7, 10, 12, the carbon brush mounting assembly 5 comprises a brush box 51 and a plurality of second elastic members 52; a plurality of carbon brush grooves 511 are arranged in the brush box 51, and the brush box 51 is provided with a lever assembly 6 on the side surface; the second elastic member 52 is arranged in the carbon brush groove 511 and can extrude the carbon brush mounted in the carbon brush groove 511; each carbon brush groove 511 is provided with a through hole 512 in the direction close to the lever assembly 6, and the driven end of the lever assembly 6 is inserted into the plurality of through holes 512; the brush box 51 is fixedly connected with the sliding support frame 2. In the embodiment of the application, four carbon brush grooves 511 are arranged in the brush box 51, so that four carbon brushes can be replaced at one time; the second elastic member 52 is a snap spring, the snap spring is provided with a clamping head 521, the side surface of the brush box 51 is provided with a clamping groove 513, the second elastic member 52 is arranged in the carbon brush groove 511, one end of the second elastic member 52 is clamped in the clamping groove 513 through the clamping head 521, and finally clamped in the carbon brush groove 511, the carbon brush groove 511 is used for slidingly inserting the carbon brush, and the carbon brush is extruded by the second elastic member 52 when the carbon brush is inserted into the carbon brush groove 511, so that the carbon brush can normally contact the excitation end of the generator under the extrusion of the second elastic member 52 in the working position; the through hole 512 is arranged to facilitate the driven end of the lever assembly 6 to extrude the carbon brush in the brush box 51 by penetrating through the through hole 512 in the maintenance position.

[0038] With reference to Figure 2 ,4 -9, the lever assembly 6 comprises a U-shaped sleeve 61, a rotating shaft 62, a plurality of straight connecting rods 63, a plurality of bent connecting rods 64 and a plurality of protrusions 65; the rotating shaft 62 is arranged on the side of the brush box 51 and sequentially penetrates the plurality of straight connecting rods 63 and the plurality of bent connecting rods 64, and is rotatably connected with the straight connecting rods 63 and the bent connecting rods 64 respectively; one end of the straight connecting rods 63 and the bent connecting rods 64 converges and is fixedly connected to the U-shaped sleeve 61, the other end of the straight connecting rods 63 and the bent connecting rods 64 is arranged separately and is fixedly connected with the protrusions 65, the protrusions 65 extend into the through hole 512; the first elastic member 7 is arranged in the U-shaped sleeve 61; when the rotating handle assembly 1 reaches the working position, the handle assembly 1 extrudes the U-shaped sleeve 61 and the first elastic member 7, so that the end of the protrusion 65 is retracted into the through hole 512; when the rotating handle assembly 1 reaches the maintenance position, the handle assembly 1 does not extrude the U-shaped sleeve 61, the first elastic member 7 lifts the U-shaped sleeve 61, so that the end of the protrusion 65 penetrates through the through hole 512 and extends into the inside of the carbon brush groove 511. In the embodiment of the application, two straight connecting rods 63 and two bent connecting rods 64 are arranged, the two straight connecting rods 63 are in the middle, the two bent connecting rods 64 are on the outside, one end of the two straight connecting rods 63 is fixedly connected to the two sides of the U-shaped sleeve 61 respectively, one end of the two bent connecting rods 64 converges to the two sides of the U-shaped sleeve 61 after being bent, so that one end of the two straight connecting rods 63 and the two bent connecting rods 64 are connected as a whole through the U-shaped sleeve 61, the two ends of the rotating shaft 62 are rotatably connected with the fixing buckles 66, the fixing buckles 66 are fixedly connected to the side of the brush box 51, realizing the rotatable connection between the rotating shaft 62 and the brush box 51, the other end of the two straight connecting rods 63 and the other end of the two bent connecting rods 64 are fixedly connected with the protrusions 65, the protrusions 65 extend into the through hole 512, at the working position, the shaft 12 extrudes the U-shaped sleeve 61, and then the protrusions 65 are retracted into the through hole 512 (no longer extruding the carbon brush), at the maintenance position, the U-shaped sleeve 61 enters the recess 121 under the extrusion of the first elastic member 7, and then the protrusions 65 penetrate through the through hole 512 and extend into the carbon brush groove 511, so as to extrude the carbon brush and fix the carbon brush, avoiding the carbon brush from falling off during the pulling-out process of the whole device.

[0039] With reference to Figures 5-9 The distance between the rotating shaft 62 and the protrusion 65 is less than the distance between the rotating shaft 62 and the U-shaped sleeve 61. In the embodiment of the application, in order to make it more labor-saving when rotating to the maintenance position, the distance between the rotating shaft 62 and the protrusion 65 is less than the distance between the rotating shaft 62 and the U-shaped sleeve 61, so as to skillfully utilize the principle of lever labor-saving.

[0040] With reference to Figure 4The rotating handle assembly 1 further comprises a third elastic member 13 and a protective sleeve 14. The third elastic member 13 is sleeved outside the top end of the rotating shaft 12, one end of the third elastic member 13 is clamped with the top end of the sliding support frame 2, and the other end of the third elastic member 13 is clamped with the bottom end of the handle 11. The protective sleeve 14 is outside the third elastic member 13 and is fixedly connected with the handle 11. In the embodiment of the application, the third elastic member 13 is further provided, and the purpose is to ensure that when rotating to the working position, the third elastic member 13 can provide elastic force to the handle 11 in the direction away from the fixed support frame 4, so that the extrusion force exists between the lock head 3 and the lock groove 41, and the clamping between the lock head 3 and the lock groove 41 is more firm. At this time, when switching between the working position and the maintenance position each time, the handle 11 needs to be slightly extruded in the axial direction of the rotating shaft 12 while rotating (the purpose is to extrude the third elastic member 13), and after the switching is completed, the handle is released, so that the third elastic member 13 extrudes the handle 11 outward in the axial direction, so that the clamping between the lock head 3 and the lock groove 41 is more firm.

[0041] With reference to Figure 11 The fixed support frame 4 is internally provided with a sliding groove 42, and the sliding support frame 2 is inserted into the sliding groove 42 and is in sliding connection with the sliding groove 42. In the embodiment of the application, the sliding groove 42 is provided to facilitate the sliding support frame 2 to be slidably inserted into the sliding groove 42. The two sides of the fixed support frame 4 are fixedly connected to the generator excitation end by bolts.

[0042] The working principle of the generator excitation end carbon brush replacement device provided by the embodiment of the application is as follows:

[0043] When the carbon brush needs to be repaired and replaced, the handle 11 is rotated to drive the rotating shaft 12 to rotate, so that the rotating handle assembly 1 reaches the repair position, at this time, the two small protrusions are rotated to the position corresponding to the two small through grooves, facilitating the pulling out of the lock head 3 from the lock groove 41, at the same time, when the rotating handle assembly 1 is rotated to the repair position, the driving end of the lever assembly 6 is not squeezed, that is, the U-shaped sleeve 61 is popped up upward under the elastic force of the first elastic member 7 and enters the recess 121, so that the driven end of the lever assembly 6 is inserted into the inside of the carbon brush mounting assembly 5, that is, the four protrusions 65 pass through the through holes 512 and are inserted into the carbon brush grooves 511, thereby squeezing the carbon brush and fixing the carbon brush, at this time, when the rotating handle assembly 1 is pulled out as a whole, the sliding support frame 2 will pull out the carbon brush mounting assembly 5 as a whole, which can avoid the carbon brush from falling off during the pulling-out process; when the carbon brush replacement is completed and the entire device needs to be installed, first, the rotating handle assembly 1 (still at the repair position) is held to make the sliding support frame 2 align with the sliding groove 42 of the fixed support frame 4 and insert into the fixed support frame 4, at the same time, the lock head 3 also passes through the lock groove 41, then the handle 11 is rotated to make the rotating handle assembly 1 to the working position, so that the lock head 3 is clamped on the outside of the lock groove 41 to achieve locking, at the same time, after the rotating handle assembly 1 is rotated to the working position, the rotating shaft 12 squeezes the U-shaped sleeve 61, so that the first elastic member 7 is compressed, thereby making the four protrusions 65 retract into the through holes 512 and no longer squeezing the carbon brush, at this time, the carbon brush is squeezed to contact the excitation end of the generator under the action of the second elastic member 52, ensuring the normal work of the carbon brush.

[0044] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the difference from other embodiments.

[0045] The above examples are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A generator field terminal carbon brush replacement device, characterized by, The application relates to a carbon brush installation assembly and a fixing support frame. The rotating handle assembly (1) penetrates through the sliding support frame (2) and is rotationally connected with the sliding support frame (2). The fixed support frame (4) is fixedly connected with an excitation end of a generator, and a lock groove (41) is arranged at the bottom end of the fixed support frame (4). The lock head (3) is fixedly connected with the end of the rotating handle assembly (1). The sliding support frame (2) is inserted into the fixed support frame (4), and the lock head (3) can pass through the lock groove (41). The carbon brush installation assembly (5) is fixedly connected with the sliding support frame (2). The lever assembly (6) is arranged in the carbon brush installation assembly (5) and between the carbon brush installation assembly (5) and the sliding support frame (2), and the driven end of the lever assembly (6) extends into the interior of the carbon brush installation assembly (5). The bottom end of the first elastic member (7) is connected with the outer side of the carbon brush installation assembly (5), the top end of the first elastic member (7) presses the driving end of the lever assembly (6), and the driving end of the lever assembly (6) is in contact with the rotating handle assembly (1). The rotating handle assembly (1) has two working positions of a working position and a maintenance position. When the rotating handle assembly (1) is rotated to the working position, the rotating handle assembly (1) drives the lock head (3) to rotate relative to the lock groove (41), so that the lock head (3) is locked with the lock groove (41), thereby enabling the sliding support frame (2) to be clamped with the fixed support frame (4) through the rotating handle assembly (1), meanwhile, the rotating handle assembly (1) presses the driving end of the lever assembly (6) and the first elastic member (7), so that the driven end of the lever assembly (6) is retracted and separated from the interior of the carbon brush installation assembly (5). When the rotating handle assembly (1) is rotated to the maintenance position, the rotating handle assembly (1) drives the lock head (3) to rotate relative to the lock groove (41), so that the lock head (3) is unlocked with the lock groove (41), thereby enabling the sliding support frame (2) to be relatively slid with the fixed support frame (4), meanwhile, the driving end of the lever assembly (6) is not pressed by the rotating handle assembly (1), the first elastic member (7) lifts the driving end of the lever assembly (6), so that the driven end of the lever assembly (6) extends into the interior of the carbon brush installation assembly (5). The carbon brush installation assembly (5) comprises a brush box (51) and a plurality of second elastic members (52). The brush box (51) is provided with a plurality of carbon brush grooves (511), and the side of the brush box (51) is provided with the lever assembly (6). The second elastic members (52) are arranged in the carbon brush grooves (511) and can press the carbon brushes arranged in the carbon brush grooves (511). Each of the carbon brush grooves (511) is provided with a through hole (512) towards the lever assembly (6), and the driven end of the lever assembly (6) extends into the through holes (512); The brush box (51) is fixedly connected with the sliding support frame (2); The lever assembly (6) comprises a U-shaped sleeve (61), a rotating shaft (62), a plurality of straight connecting rods (63), a plurality of bent connecting rods (64) and a plurality of convex heads (65); The rotating shaft (62) is arranged on the side of the brush box (51) and sequentially penetrates the plurality of straight connecting rods (63) and the plurality of bent connecting rods (64), and is rotatably connected with the straight connecting rods (63) and the bent connecting rods (64) respectively; One end of the straight connecting rods (63) and the bent connecting rods (64) converges and is fixedly connected with the U-shaped sleeve (61), and the other end of the straight connecting rods (63) and the bent connecting rods (64) is separately arranged and fixedly connected with the convex heads (65), and the convex heads (65) extend into the through holes (512); The first elastic member (7) is arranged in the U-shaped sleeve (61); When the handle assembly (1) is rotated to the working position, the handle assembly (1) extrudes the U-shaped sleeve (61) and the first elastic member (7), so that the end of the convex head (65) is retracted into the through hole (512); When the handle assembly (1) is rotated to the maintenance position, the handle assembly (1) does not extrude the U-shaped sleeve (61), the first elastic member (7) lifts up the U-shaped sleeve (61), so that the end of the convex head (65) penetrates through the through hole (512) and extends into the inside of the carbon brush groove (511); the first elastic member (7) is a spring.

2. The generator field end carbon brush changer of claim 1, wherein, The handle assembly (1) comprises a handle (11) and a rotating shaft (12); One end of the rotating shaft (12) is fixedly connected with the handle (11), and the other end of the rotating shaft (12) penetrates the sliding support frame (2) and is rotatably connected with the sliding support frame (2); The lock head (3) is fixedly connected with the end of the rotating shaft (12) away from the handle (11); The outer side of the rotating shaft (12) is provided with a groove (121) inwardly, when the handle assembly (1) is in the maintenance position, the driving end of the lever assembly (6) extends into the groove (121) under the extrusion of the first elastic member (7), when the handle assembly (1) is in the working position, the rotating shaft (12) drives the groove (121) to rotate, so that the driving end of the lever assembly (6) is away from the groove (121) and is extruded by the outer side of the rotating shaft (12).

3. The generator field end carbon brush changer of claim 1, wherein, The distance between the rotating shaft (62) and the convex head (65) is less than the distance between the rotating shaft (62) and the U-shaped sleeve (61).

4. The generator field end carbon brush changing device of claim 2, wherein, The handle assembly (1) further comprises a third elastic member (13) and a protective sleeve (14); The third elastic member (13) is sleeved outside the top end of the rotating shaft (12), one end of the third elastic member (13) is clamped with the top end of the sliding support frame (2), and the other end of the third elastic member (13) is clamped with the bottom end of the handle (11); The protective sleeve (14) is outside the third elastic member (13) and is fixedly connected with the handle (11).

5. The generator field terminal carbon brush changing device according to claim 1, characterized by, The fixed support frame (4) is internally provided with a sliding groove (42); The sliding support frame (2) is inserted into the sliding groove (42) and is in sliding connection with the sliding groove (42).

Images