Carbon brush lifting device

Abstract

The utility model relates to the technical field of motor carbon brushes, in particular to a carbon brush lifting device, which comprises a fixed plate, a connecting sleeve, a fixed seat, a mounting seat, a brush box and a carbon brush, and the connecting sleeve is fixedly mounted on the upper side of the right part of the fixed plate. A limiting assembly installed between the right side of the carbon brush and the inner side of the right portion can prevent the carbon brush from moving rightwards, and the left end of the carbon brush abuts against the collecting ring conveniently. When the carbon brush needs to be replaced or inspected, the insulating rod is rotated to enable the locking pin to retreat from the right end of the lock hole rightwards, and then the mounting seat is detached from the fixing seat, so that a worker can conveniently take the mounting seat away from the collecting ring and inspect and replace the carbon brush, and the problems that the worker is too close to the collecting ring when replacing and overhauling the carbon brush, and the carbon brush is damaged can be effectively solved. The disassembly and assembly are inconvenient; and the human body electric shock risk exists.

Description

Technical Field

[0001] The utility model relates to the technical field of motor carbon brushes, and is a carbon brush lifting device. Background Technique

[0002] As a static and dynamic combined carbon brush lifting device for supplying exciting current to the rotor, the carbon brushes, brush holders and slip ring system of a turbogenerator play a crucial role in the normal operation of the generator. However, with the increase of operation time, phenomena such as carbon brush arcing and small current sharing are likely to occur, which further expands the current sharing difference of the carbon brushes. In the light case, it can cause arcing between the carbon brush and the slip ring, and in the severe case, it may even develop into ring fire, burning out the slip ring and the brush holder, resulting in an unplanned shutdown event of the unit. Therefore, the operating personnel need to frequently check the current sharing of the generator carbon brushes.

[0003] The existing carbon brushes fix the carbon brush braids on the fixing rod above the motor slip ring with bolts. When personnel replace and repair the carbon brushes, they are too close to the slip ring, which is inconvenient for disassembly and installation and there is a risk of electric shock. Summary of the Invention

[0004] The utility model provides a carbon brush lifting device, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problems that when replacing and repairing carbon brushes, the distance from the slip ring is too close, the disassembly and installation are inconvenient and there is a risk of electric shock to personnel existing in the existing carbon brushes.

[0005] The technical solution of the utility model is realized by the following measures: a carbon brush lifting device, including a fixing plate, a connecting sleeve, a fixing seat, a mounting seat, a brush box and a carbon brush. The upper side of the right part of the fixing plate is fixedly installed with a connecting sleeve, the lower side of the fixing plate is fixedly installed with a U-shaped fixing seat with an opening to the right. An installation seat is arranged in the fixing seat. A locking hole penetrating through left and right is opened at the left end of the fixing seat. A through hole penetrating through left and right is opened at the left side of the mounting seat corresponding to the position of the locking hole. An insulating rod with its right end passing through the locking hole is inserted into the through hole. A locking pin which can withdraw rightward from the locking hole after rotating a certain angle is fixedly installed at the left end of the insulating rod. A tubular brush box penetrating through left and right is fixedly installed at the lower left part of the mounting seat. A carbon brush is slidably installed in the brush box. A brush braid is arranged between the lower right end of the carbon brush and the lower right side of the mounting seat. A limiting component capable of preventing the carbon brush from moving rightward is installed between the right side of the carbon brush and the inner side of the right part of the brush box.

[0006] The following is a further optimization and / or improvement of the above-mentioned technical solution of the utility model:

[0007] The above-mentioned limiting component may include a mounting plate and an elastic resetting member. A through groove penetrating through left and right is arranged on the inner side of the upper part of the brush box. A mounting plate is slidably installed in the through groove. An elastic resetting member is installed between the lower left part of the mounting plate and the upper right side of the carbon brush. A locking groove with its right part inclined upward relative to the left part is arranged on the lower side of the mounting seat corresponding to the position right to the brush box. A limiting piece with its lower end fixedly connected to the upper side of the mounting plate is arranged in the locking groove.

[0008] A limiting rod can be fixedly installed at the right part of the lower end of the carbon brush. The right end of the limiting rod is located to the right of the brush box and fixedly connected with a limiting plate. The left side of the lower part of the limiting plate abuts against the right side of the lower part of the brush box.

[0009] It may further include a connecting mechanism. The connecting mechanism includes a hanging ear, a connecting plate and a fastening bolt. A threaded hole is formed in the lower side of the right part of the mounting seat. The fastening bolt is screwed in the threaded hole. A hanging ear is fixedly installed on the front side of the right end of the carbon brush. The first end of the brush braid is fixedly connected with the hanging ear. The second end of the brush braid is fixedly installed with a C-shaped connecting plate. The connecting plate is sleeved on the outer side of the lower part of the fastening bolt.

[0010] The insulating rod may include a shaft pin and an insulating handle. The shaft pin is rotatably installed in the through hole. The right end of the shaft pin is fixedly connected with the insulating handle. The left end of the shaft pin passes through the left end of the locking hole and is fixedly connected with the locking pin.

[0011] The cross section of the locking hole may be rectangular. The projection of the locking pin is located within the projection of the locking hole after rotation.

[0012] The structure of the utility model is reasonable and compact, and it is convenient to use. When in use, the connecting sleeve is fixed on the fixed rods of the positive and negative poles of the external generator excitation, and the left end of the carbon brush abuts against the rotating collector ring. The brush braid is used to conduct current between the carbon brush and the mounting seat. The limiting component installed between the right side of the carbon brush and the inner side of the right part of the brush box can prevent the carbon brush from moving to the right, facilitating the abutment of the left end of the carbon brush against the collector ring. When the carbon brush needs to be replaced or inspected, rotate the insulating rod to make the locking pin withdraw from the right end of the locking hole to the right, and then remove the mounting seat from the fixed seat, facilitating the staff to take the mounting seat away from near the collector ring and then inspect and replace the carbon brush, which can effectively solve the problems existing in the existing carbon brush that when replacing and overhauling the carbon brush, the distance from the collector ring is too close, the disassembly and assembly are inconvenient and there is a risk of personal electric shock. Description of the Drawings

[0013] Att Figure 1 It is the schematic front sectional view structure diagram of Embodiment 1.

[0014] Att Figure 2 It is the schematic left view structure diagram of Embodiment 1.

[0015] The codes in the drawings are respectively: 1 is the connecting sleeve, 2 is the fixing plate, 3 is the mounting seat, 4 is the insulating handle, 5 is the brush box, 6 is the sliding groove, 7 is the mounting plate, 8 is the elastic resetting member, 9 is the carbon brush, 10 is the shaft pin, 11 is the locking pin, 12 is the locking hole, 13 is the hanging ear, 14 is the brush braid, 15 is the fastening bolt, 16 is the limiting rod, 17 is the connecting plate, 18 is the limiting plate, 19 is the limiting piece, 20 is the fixed seat. Detailed Embodiment

[0016] The present utility model is not limited by the following embodiments, and the specific implementation manners can be determined according to the technical solution of the present utility model and the actual situation.

[0017] In the present utility model, for the convenience of description, the description of the relative position relationship of each component is carried out according to the layout mode of the attached drawings of the specification. For example, the position relationships such as front, back, up, down, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 The position relationships such as front, back, up, down, left, and right are determined according to the layout direction of the attached drawings of the specification.

[0018] The present utility model will be further described below in conjunction with the embodiments and the attached drawings:

[0019] Embodiment 1, as shown in the attached drawings Figure 1 、 2 The carbon brush lifting device includes a fixing plate 2, a connecting sleeve 1, a fixing seat 20, a mounting seat 3, a brush box 5, and a carbon brush 9. A connecting sleeve 1 is fixedly installed on the upper side of the right part of the fixing plate 2. A U-shaped fixing seat 20 with an opening to the right is fixedly installed on the lower side of the fixing plate 2. A mounting seat 3 is arranged in the fixing seat 20. A locking hole 12 penetrating through left and right is opened at the left end of the fixing seat 20. A through hole penetrating through left and right is opened on the left side of the mounting seat 3 corresponding to the position of the locking hole 12. An insulating rod with its right end passing through the locking hole 12 is inserted into the through hole. A locking pin 11 that can withdraw to the right from the locking hole 12 after rotating a certain angle is fixedly installed at the left end of the insulating rod. A tubular brush box 5 penetrating through left and right is fixedly installed on the lower left side of the mounting seat 3. A carbon brush 9 is slidably installed in the brush box 5. A brush pigtail 14 is arranged between the lower right end of the carbon brush 9 and the lower right side of the mounting seat 3. A limiting component capable of preventing the carbon brush 9 from moving to the right is installed between the right side of the carbon brush 9 and the inner side of the right part of the brush box 5.

[0020] During use, the connecting sleeve 1 is fixed on the fixed rods of the positive and negative poles of the external generator excitation. The left end of the carbon brush 9 is abutted against the rotating slip ring. The brush pigtail 14 is used to conduct current between the carbon brush 9 and the mounting seat 3. The limiting component installed between the right side of the carbon brush 9 and the inner side of the right part of the brush box 5 can prevent the carbon brush 9 from moving to the right, facilitating the abutment of the left end of the carbon brush 9 against the slip ring. When it is necessary to replace or inspect the carbon brush 9, rotate the insulating rod to make the locking pin 11 withdraw to the right from the right end of the locking hole 12, and then remove the mounting seat 3 from the fixing seat 20, facilitating the staff to take the mounting seat 3 away from near the slip ring and then inspect and replace the carbon brush 9, effectively solving the problems existing in the existing carbon brush 9 that when personnel replace and repair the carbon brush 9, the distance from the slip ring is too close, the disassembly and assembly are inconvenient, and there is a risk of electric shock to the person.

[0021] According to actual needs, the above carbon brush lifting device can be further optimized or / and improved:

[0022] Embodiment 2, as shown in the attached drawings Figure 1As shown in the figure, this embodiment is a further optimization of the above embodiment. The limiting component includes a mounting plate 7 and an elastic resetting member 8. A through chute 6 is provided inside the upper part of the brush box 5. The mounting plate 7 is slidably installed in the chute 6. An elastic resetting member 8 is installed between the lower left side of the mounting plate 7 and the upper right side of the carbon brush 9. A locking groove with its right part inclined upward relative to its left part is provided on the lower side of the mounting seat 3 corresponding to the right side of the brush box 5. A limiting piece 19 with its lower end fixedly connected to the upper side of the mounting plate 7 is provided in the locking groove.

[0023] In this embodiment, the locking groove and the limiting piece 19 are arranged in cooperation to prevent the mounting plate 7 from shifting to the right; the elastic resetting member 8 is a well-known coil spring in the prior art and is used to provide a leftward force for the carbon brush 9. Specifically, the left end of the carbon brush 9 abuts against the slip ring, causing the carbon brush 9 to squeeze the elastic resetting member 8 to the right. Since the mounting plate 7 is limited by the limiting piece 19, the elastic resetting member 8 cannot move and is thus compressed to generate an elastic force, realizing that the elastic resetting plate continuously pushes the carbon brush 9 to the left, enabling the carbon brush 9 to always remain in contact with the slip ring even after the left end is worn by friction.

[0024] Embodiment Three, as shown in the appendix Figure 1 As shown in the figure, this embodiment is a further optimization of the above embodiment. A limiting rod 16 is fixedly installed at the lower right part of the lower end of the carbon brush 9. The right end of the limiting rod 16 is located on the right side of the brush box 5 and is fixedly connected to a limiting plate 18. The lower left side of the limiting plate 18 abuts against the lower right side of the brush box 5. In this embodiment, the limiting rod 16 and the limiting plate 18 are arranged. When the carbon brush 9 is placed in the brush box 5, the lower part of the limiting plate 18 abuts against the lower part of the brush box 5, thereby limiting the carbon brush 9 and preventing the carbon brush 9 from falling from the opening on the left side of the brush box 5, facilitating the installation of the brush braid 14 and the mounting plate 7 by the staff when replacing the carbon brush 9.

[0025] Embodiment Four, as shown in the appendix Figure 1 As shown in the figure, this embodiment is a further optimization of the above embodiment. It further includes a connecting mechanism. The connecting mechanism includes a hanging ear 13, a connecting plate 17, and a fastening bolt 15. A threaded hole is provided in the lower right part of the mounting seat 3, and the fastening bolt 15 is screwed in the threaded hole. A hanging ear 13 is fixedly installed on the front side of the right end of the carbon brush 9. The first end of the brush braid 14 is fixedly connected to the hanging ear 13. The second end of the brush braid 14 is fixedly installed with a C-shaped connecting plate 17, and the connecting plate 17 is sleeved on the outer side of the lower part of the fastening bolt 15.

[0026] According to needs, multiple connecting mechanisms and brush braids 14 can be provided. The connecting mechanism is used to conveniently connect the brush braid 14 to the mounting seat 3. Specifically, when installing the brush braid 14, the connecting plate 17 is sleeved on the outer side of the fastening bolt 15, and the fastening bolt 15 is rotated to move the fastening bolt 15 upward, so that the connecting plate 17 is clamped between the nut of the fastening bolt 15 and the mounting seat 3, realizing the connection between the brush braid 14 and the mounting seat 3. The connecting plate 17 is C-shaped, facilitating the entry of the fastening bolt 15 into the inner side of the connecting plate 17 through the opening of the connecting plate 17.

[0027] Example 5, as shown in the appendix Figure 1 and 2 shown. This example is a further optimization of the above example. The insulating rod includes a shaft pin 10 and an insulating handle 4. The shaft pin 10 is rotatably installed in the through hole. The right end of the shaft pin 10 is fixedly connected to the insulating handle 4. The left end of the shaft pin 10 passes through the left end of the locking hole 12 and is fixedly connected to the locking pin 11. The shaft pin 10 is rotatably installed in the through hole and its right end is fixedly connected to the insulating handle 4, which facilitates rotating the shaft pin 10 through the insulating handle 4 and reduces the risk of electric shock for the staff when disassembling the mounting seat 3.

[0028] Example 6, as shown in the appendix Figure 1 and 2 shown. This example is a further optimization of the above example. The cross-section of the locking hole 12 is rectangular, and the projection of the locking pin 11 is located within the projection of the locking hole 12 after rotation. When the projection of the locking pin 11 is located within the projection of the locking hole 12, the locking pin 11 can pass through the locking hole 12, facilitating the removal of the mounting seat 3; when the projection of the locking pin 11 is no longer located within the projection of the locking hole 12, the locking pin 11 cannot pass through the locking hole 12, causing the mounting seat 3 and the fixing seat 20 to be connected together; thus realizing convenient and quick connection or disassembly of the fixing seat 20 and the mounting seat 3.

[0029] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effects. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A carbon brush lifting device, characterized in that It includes a fixing plate, a connecting sleeve, a fixing seat, a mounting seat, a brush box and a carbon brush. On the upper side of the right part of the fixing plate, a connecting sleeve is fixedly installed. On the lower side of the fixing plate, a U-shaped fixing seat with an opening to the right is fixedly installed. A mounting seat is arranged inside the fixing seat. A through hole penetrating left and right is opened at the left end of the fixing seat. A through hole penetrating left and right is opened at the left side of the mounting seat corresponding to the position of the lock hole. An insulating rod with its right end passing through the lock hole is inserted into the through hole. A locking pin that can withdraw rightward from the lock hole after rotating a certain angle is fixedly installed at the left end of the insulating rod. A tubular brush box penetrating left and right is fixedly installed at the lower left side of the mounting seat. A carbon brush is slidably installed inside the brush box. A brush pigtail is arranged between the lower right end of the carbon brush and the lower right side of the right part of the mounting seat. A limiting component capable of preventing the carbon brush from moving rightward is installed between the right side of the carbon brush and the inner side of the right part of the brush box.

2. The carbon brush lifting device according to claim 1 is characterized in that The limiting component includes a mounting plate and an elastic resetting member. A through hole penetrating left and right is arranged inside the upper part of the brush box. A mounting plate is slidably installed in the through hole. An elastic resetting member is installed between the lower left side of the mounting plate and the upper right side of the carbon brush. A locking groove with its right part inclined upward relative to the left part is arranged at the lower side of the mounting seat corresponding to the position right of the brush box. A limiting piece with its lower end fixedly connected to the upper side of the mounting plate is arranged inside the locking groove.

3. The carbon brush lifting device according to claim 1 or 2, characterized in that A limiting rod is fixedly installed at the lower right part of the lower end of the carbon brush. The right end of the limiting rod is located right of the brush box and is fixedly connected to a limiting plate. The lower left side of the limiting plate abuts against the lower right side of the brush box.

4. The carbon brush lifting device according to claim 1 or 2, characterized in that It further includes a connecting mechanism. The connecting mechanism includes a hanging ear, a connecting plate and a fastening bolt. A threaded hole is opened at the lower right side of the mounting seat. A fastening bolt is screwed into the threaded hole. A hanging ear is fixedly installed at the front side of the right end of the carbon brush. The first end of the brush pigtail is fixedly connected to the hanging ear. The second end of the brush pigtail is fixedly installed with a C-shaped connecting plate. The connecting plate is sleeved on the outer side of the lower part of the fastening bolt.

5. The carbon brush lifting device according to claim 3 is characterized in that It further includes a connecting mechanism. The connecting mechanism includes a hanging ear, a connecting plate and a fastening bolt. A threaded hole is opened at the lower right side of the mounting seat. A fastening bolt is screwed into the threaded hole. A hanging ear is fixedly installed at the front side of the right end of the carbon brush. The first end of the brush pigtail is fixedly connected to the hanging ear. The second end of the brush pigtail is fixedly installed with a C-shaped connecting plate. The connecting plate is sleeved on the outer side of the lower part of the fastening bolt.

6. The carbon brush lifting device according to claim 1, 2 or 5, characterized in that The insulating rod includes a shaft pin and an insulating handle. A shaft pin is rotatably installed in the through hole. The right end of the shaft pin is fixedly connected to the insulating handle. The left end of the shaft pin passes through the left end of the lock hole and is fixedly connected to the locking pin.

7. The carbon brush lifting device according to claim 3 is characterized in that The insulating rod includes a shaft pin and an insulating handle. A shaft pin is rotatably installed in the through hole. The right end of the shaft pin is fixedly connected to the insulating handle. The left end of the shaft pin passes through the left end of the lock hole and is fixedly connected to the locking pin.

8. The carbon brush lifting device according to claim 1 or 2 or 5 or 7, characterized in that The cross-section of the lock hole is rectangular. The projection of the locking pin is located within the projection of the lock hole after rotation.

9. The carbon brush lifting device according to claim 3, characterized in that The cross-section of the lock hole is rectangular. The projection of the locking pin is located within the projection of the lock hole after rotation.

10. The carbon brush lifting device according to claim 6, characterized in that The cross-section of the lock hole is rectangular. The projection of the locking pin is located within the projection of the lock hole after rotation.

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