High adaptability electric turntable brush frame radius adjusting device

Abstract

The utility model discloses a high adaptability electric turning brush frame radius adjusting device, including the mounting bracket of rectangular frame structure, the both ends of mounting bracket all are along the sliding seat of mounting rack length direction slidingly arranged, the top of sliding seat is equidistantly arranged with the base along the width direction of mounting rack, the vertical rotation of base is provided with the support of the shape of chi, and the support telescopic setting, and the movable end of adjacent support is hinged in the both ends of apron respectively, and the side wall of apron is connected with the mounting plate of being used for installing carbon brush over the vertical rotation and can be axially sliding telescopic support relative to the support column, the position angle of apron is fine -tuned, makes the mounting plate on apron can accurately close to the collecting ring, satisfies the demand of turning.

Description

Technical Field

[0001] This utility model relates to the field of motor brush holder technology, and in particular to a highly adaptable electric motor brush holder radius adjustment device. Background Technology

[0002] In the field of generator maintenance equipment technology, the turning test is a crucial step in generator maintenance, used to ensure normal rotor operation and check its compatibility with other components. For generators in large power plants, their brush holders are compact, severely hindering operation during maintenance, often necessitating the removal of the original brush holder. After removing the original brush holder, a temporary brush holder must be used to ensure the rotor can supply power normally during the turning test. However, current power plant models are diverse, and customizing dedicated brush holders for each model would not only significantly increase costs but also substantially enhance the complexity of management and storage, failing to meet the needs of efficient and convenient maintenance work. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that the brush holders currently used for turning wheels have poor versatility.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a highly adaptable electric rotating brush holder radius adjustment device, including a mounting frame with a rectangular frame structure, sliding seats at both ends of the mounting frame along the length direction of the mounting frame, bases equidistantly arranged on the top of the sliding seats along the width direction of the mounting frame, and a U-shaped bracket vertically rotatably mounted on the base, and the bracket is telescopically mounted, with the movable ends of adjacent brackets respectively hinged to both ends of the surrounding plate, and a mounting plate for mounting carbon brushes connected to the side wall of the surrounding plate away from the bracket.

[0005] Preferably, the mounting bracket is formed by splicing two U-shaped metal frames, and the sliding seats are respectively connected inside the metal frames.

[0006] Preferably, the mounting bracket has horizontally fixed slide rails on both sides of its inner bottom, and the bottom of the sliding seat is rotatably connected to a roller, which is in rolling connection with the slide rail.

[0007] Preferably, the sliding seat has a connecting hole at its end, and the top of the slide rail has threaded holes equidistantly arranged along the axial direction, with the connecting hole located directly above the threaded holes.

[0008] Preferably, the top of the slide rail is provided with a vertical protrusion, and the outer circumferential surface of the roller is provided with an arc-shaped groove that matches the vertical protrusion.

[0009] Preferably, a support column is vertically rotatably connected inside the base, the bottom end of the support column is located inside the base, and a worm gear is coaxially fixedly connected to the bottom end of the support column. A worm gear meshing with the worm gear and a motor driving the worm gear to rotate are installed on the base.

[0010] Preferably, the support column is horizontally fixedly connected to the middle and top of the support column, the top rod at the top of the bracket and the bottom rod at the bottom are slidably connected in the connecting sleeve, and an axial movement limiting structure is provided between the connecting sleeve and the top rod and the bottom rod.

[0011] Preferably, the axial movement limiting structure includes strip grooves formed on both sides of the inner wall of the connecting sleeve and connecting strips connected to both sides of the outer walls of the top rod and the bottom rod. The connecting strips are slidably disposed in the connecting grooves. Limiting holes and positioning holes are respectively formed on the outer wall of the connecting sleeve and the connecting strips. The limiting holes are strip holes arranged parallel to the axial direction of the connecting sleeve.

[0012] Preferably, the movable end of the bracket is fixedly connected to a bushing, and a connecting shaft is vertically rotatably connected to the bushing, the connecting shaft being fixedly connected to the end of the enclosure.

[0013] Preferably, the bottom of the enclosure is fixedly connected to a caster wheel with a locking structure.

[0014] This utility model provides a highly adaptable electric handcart brush holder radius adjustment device, which has the following beneficial effects.

[0015] 1. The sliding seats at both ends of the mounting bracket can slide freely along the slide rail. Through the rolling action of the rollers and the slide rail, the overall length of the brush holder can be quickly adjusted within 2-3 minutes (adjustment range up to 500-1500mm) to accommodate different generator rotor diameters. The threaded holes of the sliding seats and the slide rails ensure stable positioning after adjustment. Then, through a bracket that can rotate vertically and slide axially relative to the support column, the position and angle of the enclosure plate are finely adjusted, ensuring that the mounting plate on the enclosure plate accurately fits the slip ring, meeting the requirements of rotary operation. 2. The worm gear transmission mechanism (transmission ratio 1:12) inside the base, in conjunction with the motor drive, can realize the rotation of the bracket at any angle. The rotation and extension of the bracket are used to adjust the position and angle of the enclosure, thereby realizing the radius adjustment of the continuously hinged enclosure group. Attached Figure Description The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a top view of an embodiment of the present utility model.

[0016] Figure 2 This is a front view of the support structure in an embodiment of this utility model.

[0017] In the diagram: 1. Mounting bracket; 2. Slide rail; 3. Sliding seat; 4. Base; 5. Connecting sleeve; 6. Top rod; 7. Connecting strip; 8. Connecting shaft; 9. Enclosure; 10. Mounting plate; 11. Bushing; 12. Bottom rod; 13. Caster wheel; 14. Support column. Detailed Implementation

[0018] like Figure 1 and Figure 2 As shown, this utility model provides a highly adaptable electric brush holder radius adjustment device, including a rectangular frame structure mounting frame 1. Both ends of the mounting frame 1 are slidably provided with sliding seats 3 along the length direction of the mounting frame 1. The top of the sliding seats 3 is equidistantly arranged with bases 4 along the width direction of the mounting frame 1. A U-shaped bracket is vertically rotatably provided on the base 4, and the bracket is telescopically oriented. The movable ends of adjacent brackets are respectively hinged to both ends of the surrounding plate 9. The side wall of the surrounding plate 9 away from the bracket is connected to a mounting plate 10 for mounting carbon brushes.

[0019] During the rotation test, the original brush holder is first removed, and then the mounting bracket 1 is installed. After the mounting bracket 1 is fixed, the sliding seat 3 is pushed to move the surrounding plate 9 toward the slip ring. After the mounting plate 10 reaches the set distance with the slip ring, the radius of the surrounding plate group formed by the continuous hinge of the surrounding plate 9 is adjusted. The adjustment method is to adjust the radius of the surrounding plate group by vertically rotating the bracket and adjusting the extension and retraction of the bracket. After adjustment, the surrounding plate group and the slip ring are in a coaxial state.

[0020] like Figure 1 As shown. The mounting frame 1 is composed of two C-shaped metal frames joined together, and the sliding seats 3 are respectively connected inside the metal frames. The mounting frame 1 is composed of two metal frames joined together, with ear plates provided at the interface, and connected by high-strength bolts. In this way, the metal frame 1 does not require lifting equipment for hoisting during installation. Ribs are provided at the connection between the ear plates and the mounting frame 1 to ensure the strength of the connection position.

[0021] like Figure 1 As shown. Slide rails 2 are horizontally fixed on both sides of the inner bottom of the mounting bracket 1. Rollers are rotatably connected to the bottom of the sliding seat 3, and the rollers are in rolling connection with the slide rails 2. The rollers support the sliding seat 3, making it convenient for workers to move it.

[0022] As a preferred embodiment of this utility model, the sliding seat 3 has a connecting hole at its end, and the top of the slide rail 2 has threaded holes equidistantly arranged along the axial direction, with the connecting hole located directly above the threaded holes. After the sliding seat 3 is moved to a set position, its position is locked by bolts. The position of the sliding seat 3 only needs to meet the approximate gap requirement between the mounting plate 10 and the slip ring; subsequent fine-tuning of the mounting plate 10's position is achieved using a bracket.

[0023] like Figure 1As shown, to improve the stability of the sliding seat 3's movement, a vertical protrusion is provided on the top of the slide rail 2, and an arc-shaped groove adapted to the vertical protrusion is formed on the outer circumferential surface of the roller. The adaptation between the vertical protrusion and the arc-shaped groove of the roller ensures the stable movement of the sliding seat 3 along the length direction of the mounting frame 1.

[0024] like Figure 2 As shown. A support column 14 is vertically rotatably connected inside the base 4. The bottom end of the support column 14 is located inside the base 4, and a worm gear is coaxially fixedly connected to the bottom end of the support column 14. A worm gear meshing with the worm gear and a motor driving the worm gear to rotate are installed on the base 4. The motor drives the worm gear to rotate, and the worm gear drives the worm gear to rotate. The rotation of the worm gear in turn drives the support column 14 to rotate. The support column 14 drives the bracket connected to the support column 14 to rotate in the vertical direction. The bracket drives the surrounding plate 9, which is hinged to its movable end, to move, thereby realizing the angle adjustment of the surrounding plate 9 and thus enabling the adjustment of the diameter of the surrounding plate group formed by the continuous hinge of the surrounding plates 9.

[0025] like Figure 1 and Figure 2 As shown, to achieve axial position adjustment of the top rod 6, a connecting sleeve 5 is horizontally fixedly connected to the middle and top of the support column 14. The top rod 6 at the top of the bracket and the bottom rod 12 at the bottom are slidably connected within the connecting sleeve 5. An axial movement limiting structure is provided between the connecting sleeve 5 and the top rod 6 and the bottom rod 12. By releasing the axial movement limiting structure, the position of the bracket within the connecting sleeve 5 is adjusted, and in conjunction with the angle adjustment of the bracket, the diameter of the surrounding panel assembly is adjusted.

[0026] like Figure 1 and Figure 2 As shown. The axial movement limiting structure includes strip grooves formed on both sides of the inner wall of the connecting sleeve 5 and connecting strips 7 connected to both sides of the outer walls of the top rod 6 and the bottom rod 12. The connecting strips 7 are slidably disposed in the connecting grooves. Limiting holes and positioning holes are respectively formed on the outer wall of the connecting sleeve 5 and the connecting strips 7. The limiting holes are strip holes arranged parallel to the axial direction of the connecting sleeve 5. When the top rod 6 and the bottom rod 12 slide along the axial direction of the connecting sleeve 5, the connecting strips 7 are moved, and the positioning holes on the connecting strips 7 are selected so that the positioning holes are connected to the corresponding limiting holes, and the limiting is achieved by bolts. When limiting, the bolts are required to be located at the front end of the limiting holes to ensure that the top rod 6 and the bottom rod 12 cannot move towards the outside of the mounting bracket 1.

[0027] like Figure 1 and Figure 2As shown, to achieve a rotatable connection between the bracket and the enclosure 9, a bushing 11 is fixedly connected to the movable end of the bracket, and a connecting shaft 8 is vertically rotatably connected to the bushing 11. The connecting shaft 8 is fixedly connected to the end of the enclosure 9. A bearing is installed inside the bushing 11, and the bushing 11 is rotatably connected to the connecting shaft 8 through the bearing.

[0028] like Figure 2 As shown. The bottom of the enclosure 9 is fixedly connected to a caster wheel 13 with a locking structure. The caster wheel 13 supports the enclosure 9, ensuring the stability of the enclosure 9 during use.

Claims

1. A highly adaptable electric disc brush holder radius adjustment device, characterized in that: The mounting frame (1) includes a rectangular frame structure. Sliding seats (3) are slidably provided at both ends of the mounting frame (1) along the length direction of the mounting frame (1). Bases (4) are equidistantly arranged on the top of the sliding seats (3) along the width direction of the mounting frame (1). A U-shaped bracket is vertically rotatably provided on the base (4), and the bracket is telescopically provided. The movable ends of adjacent brackets are respectively hinged to both ends of the enclosure (9). A mounting plate (10) for installing carbon brushes is connected to the side wall of the enclosure (9) away from the bracket.

2. The highly adaptable electric disc brush holder radius adjustment device as described in claim 1, characterized in that: The mounting bracket (1) is formed by splicing two U-shaped metal frames, and the sliding seat (3) is connected to the metal frame respectively.

3. The highly adaptable electric disc brush holder radius adjustment device as described in claim 1, characterized in that: The mounting bracket (1) has slide rails (2) fixedly installed on both sides of its inner bottom. The bottom of the sliding seat (3) is rotatably connected to a roller, which is in rolling connection with the slide rail (2).

4. The highly adaptable electric disc brush holder radius adjustment device as described in claim 3, characterized in that: The sliding seat (3) has a connecting hole at its end, and the top of the slide rail (2) has threaded holes equidistantly arranged along the axial direction, with the connecting hole located directly above the threaded hole.

5. The highly adaptable electric disc brush holder radius adjustment device as described in claim 3, characterized in that: The top of the slide rail (2) is provided with a vertical protrusion, and the outer circumferential surface of the roller is provided with an arc-shaped groove that matches the vertical protrusion.

6. The highly adaptable electric disc brush holder radius adjustment device as described in claim 1, characterized in that: A support column (14) is vertically rotatably connected inside the base (4). The bottom end of the support column (14) is located inside the base (4). A worm wheel is coaxially fixedly connected to the bottom end of the support column (14). A worm gear meshing with the worm wheel and a motor driving the worm gear to rotate are installed on the base (4).

7. The highly adaptable electric disc brush holder radius adjustment device as described in claim 6, characterized in that: The support column (14) is horizontally fixedly connected to the middle and top of the connecting sleeve (5). The top rod (6) at the top of the bracket and the bottom rod (12) at the bottom are slidably connected in the connecting sleeve (5). An axial movement limiting structure is provided between the connecting sleeve (5) and the top rod (6) and the bottom rod (12).

8. The highly adaptable electric disc brush holder radius adjustment device as described in claim 7, characterized in that: The axial movement limiting structure includes strip grooves on both sides of the inner wall of the connecting sleeve (5) and connecting strips (7) on both sides of the outer wall of the top rod (6) and the bottom rod (12). The connecting strips (7) are slidably disposed in the connecting grooves. Limiting holes and positioning holes are respectively provided on the outer wall of the connecting sleeve (5) and the connecting strips (7). The limiting holes are strip holes arranged parallel to the axial direction of the connecting sleeve (5).

9. The highly adaptable electric disc brush holder radius adjustment device as described in claim 1, characterized in that: The movable end of the bracket is fixedly connected to a bushing (11), and a connecting shaft (8) is vertically rotatably connected to the bushing (11). The connecting shaft (8) is fixedly connected to the end of the enclosure (9).

10. The highly adaptable electric disc brush holder radius adjustment device as described in claim 1, characterized in that: The bottom of the enclosure (9) is fixedly connected to a caster wheel (13) with a locking structure.

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