A high voltage complete distribution cabinet

Abstract

The present invention discloses a high-voltage complete power distribution cabinet, and the technical scheme adopted includes: a cabinet, a chassis vehicle arranged in the cabinet, and a middle door hinged at the middle of the cabinet, the chassis vehicle includes a base, a front beam arranged at the front end of the base, and rollers arranged at both sides of the base, the cabinet is provided with tracks matching with the rollers on both sides, the rear end of the track is provided with a lock hole, the front beam is provided with a first lock pin matching with the lock hole on both sides, and the first lock pin is provided with a handle extending from the first long hole of the front beam. The advantages are as follows: when the middle door is closed, the first lock pin can be inserted into the lock hole to completely lock it, and the second lock pin can be moved away from the lock plate to complete unlocking, realizing linkage operation, making the operation simpler and safer.

Description

Technical Field

[0001] The invention belongs to the field of electric power equipment, and in particular relates to a high-voltage complete set of power distribution cabinets. Background Art

[0002] A high-voltage complete set of power distribution cabinet refers to an integral device in a high-voltage power system that combines various electrical components in a certain layout, which can realize the functions of power distribution, control, protection, etc. Its structure includes: a cabinet, a trolley-type circuit breaker arranged in the cabinet, and a middle door hinged in the middle of the cabinet. The trolley-type circuit breaker includes a chassis and a circuit breaker arranged on the chassis. The chassis includes: a base, a front beam arranged at the front end of the base, and rollers arranged on both sides of the base. Tracks cooperating with the rollers are arranged on both sides of the cabinet, a lock hole is arranged at the rear end of the track, a first lock pin connected to the lock hole is arranged on both sides of the front beam, and a handle extending from the first long hole of the front beam is arranged on the first lock pin. An operating spindle is arranged in the middle of the base, a sheath is arranged at the front end of the front beam, and a lock is arranged on the sheath, and a middle door interlocking mechanism connected to the lock plate is arranged on one side of the sheath. Before pushing the vacuum circuit breaker in (pushing it from the test position to the working position and locking it), you need to lock the first lock pin into the lock hole of the track, then close the middle door, and unlock the middle door interlocking mechanism and the lock plate before you can operate the operating spindle to ensure safety. There are also disadvantages: 1. The first lock pin needs to be locked by manually pulling the handle, which is not only troublesome to operate, but also easy to forget to lock; 2. When the first lock pin is not locked, the operating spindle can also be operated, which is unsafe; 3. After the chassis is pushed in or out of place, there is no positioning structure on the roller, resulting in poor stability; 4. The traditional middle door interlocking mechanism has a complex structure and poor stability. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-voltage complete power distribution cabinet which is easy to operate and more safe and reliable.

[0004] In order to solve the above problems, the technical solution adopted by the present invention includes: a cabinet, a chassis vehicle arranged in the cabinet and a middle door hinged at the middle of the cabinet, the chassis vehicle includes a base, a front beam arranged at the front end of the base and rollers arranged at both sides of the base, tracks matching with the rollers are arranged on both sides of the cabinet, a locking hole is arranged at the front end of the track, first locking pins matching with the locking hole are arranged at both sides of the front beam, a handle extending from the first long hole of the front beam is arranged on the first locking pin, an operating spindle is arranged in the middle of the base, a sheath sleeved on the end of the operating spindle is arranged at the front end of the front beam, and a floating The invention relates to a lock plate, and a middle door interlocking mechanism is provided on both sides thereof and is locked with the lock plate, characterized in that the middle door interlocking mechanism comprises a bracket, a linkage lever hinged at the upper end of the bracket, a second lock pin arranged in the bracket and a first spring sleeved on the rear end of the second lock pin, the linkage lever is provided with a power arm cooperating with the middle door, a first resistance arm cooperating with the first lock pin and a second resistance arm cooperating with the second lock pin; when the middle door is closed, the middle door applies pressure to the power arm, so that the first resistance arm drives the first lock pin to be inserted into the lock hole, and the second resistance arm drives the second lock pin away from the lock plate.

[0005] The high-voltage complete power distribution cabinet is characterized in that a labor-saving lever is hinged on the front beam, and the labor-saving lever passes through the second long hole of the first locking pin and overlaps with the first resistance arm.

[0006] The high-voltage complete power distribution cabinet is characterized in that the rear ends of the first locking pins are overlapped, and a circular hole for the operating spindle to pass through is provided at the overlapping portion, a locking opening is provided on one side of the circular hole, and a locking groove matching the locking opening is provided on the operating spindle, and when the first locking pin is unlocked from the locking hole, the locking opening is locked into the locking groove.

[0007] The high-voltage complete distribution cabinet is characterized in that: positioning mechanisms are provided on both sides of the partition of the cabinet body cavity, and the positioning mechanisms include a convex positioning plate, a first screw rod provided at both ends of the convex positioning plate and a second spring provided at the lower end of the first screw rod, a fastening nut is provided at the upper end of the first screw rod, and a spring retaining ring is provided at the lower end, the track is provided with an upper edge and a lower edge, and the roller rolls between the upper edge and the lower edge; the top of the convex positioning plate extends from the lower edge of the track to be positioned and matched with the roller, and when the chassis vehicle is pushed into place, the roller at its rear end is positioned and matched with the front inclined surface of the convex positioning plate, and when the chassis vehicle is withdrawn into place, the roller at its front end is positioned and matched with the rear inclined surface of the convex positioning plate.

[0008] The high-voltage complete distribution cabinet is characterized in that: a hexagonal positioning nut is provided on the operating spindle, guide surfaces are provided at both ends of the hexagonal positioning nut, a hexagonal positioning groove adapted to the hexagonal positioning nut is provided on the lock plate, and the lock plate is installed on the front end of the front beam by means of second screws at both ends and a fourth spring sleeved on the second screw.

[0009] The high-voltage complete power distribution cabinet is characterized in that a positioning steel ball is provided at the rear end of the operating spindle through a steel ball installation cavity, and a third spring is provided at the rear end of the positioning steel ball.

[0010] The high-voltage complete power distribution cabinet is characterized in that: the second locking pin includes a sliding part, a guide column arranged at the rear end of the sliding part and a pin head arranged at the sliding part, the sliding part is provided with a through slot, the front end of the second resistance arm is provided with a pressure-applying part extending into the through slot, the front end of the pressure-applying part is provided with an arc-shaped surface, the front end of the bracket is provided with a slide groove adapted to the sliding part, the rear end is provided with a guide hole adapted to the guide column, and the upper end is provided with a positioning step for positioning the second resistance arm.

[0011] The high-voltage complete set of power distribution cabinet is characterized in that a bearing is provided on the power arm.

[0012] The high-voltage complete power distribution cabinet is characterized in that: the roller is connected to both sides of the base through a self-lubricating axle assembly, the self-lubricating axle assembly includes an axle body, an axle nut connected to the front end of the axle body, an oil storage chamber is provided in the axle body, and the oil storage chamber is provided with a group of circumferentially arranged oil outlet holes corresponding to the roller.

[0013] The high-voltage complete set of power distribution cabinet is characterized in that a refueling hole is provided at the outer end of the axle body, and a sealing screw is provided on the refueling hole.

[0014] The advantages of the high-voltage complete distribution cabinet of the present invention are as follows: 1. When the middle door is closed, the first lock pin can be inserted into the lock hole to completely lock the door, and the second lock pin can be moved away from the lock plate to complete the unlocking, thereby realizing linkage operation, making the operation simpler and safer; 2. When the first lock pin is not locked, the operating spindle cannot be operated, thereby improving safety; 3. After the chassis vehicle is pushed in or out of place, the roller can be positioned, thereby improving stability; 4. The structure of the middle door interlocking mechanism is simple, and the stability is good.

[0015] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a high-voltage complete set of power distribution cabinets of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the chassis vehicle of the present invention;

[0018] Figure 3 is a cross-sectional view of the door interlocking mechanism of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the track of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the operating spindle and the first locking pin of the present invention;

[0021] Figure 6 is a partial cross-sectional view of the operating spindle of the present invention;

[0022] Figure 7 is a partial view of the self-lubricating axle assembly of the present invention;

[0023] Figure 8 yes Figure 4 A magnified image of point A;

[0024] Fig. 9 It is a structural schematic diagram of the hexagonal positioning nut of the present invention;

[0025] Fig.10 It is a schematic diagram of the locked state of the operating spindle and the first locking pin of the present invention. DETAILED DESCRIPTION

[0026] Reference Figure 1-10As shown, the high-voltage complete power distribution cabinet of the present invention comprises a cabinet body 1, a chassis 2 arranged in the middle inner cavity of the cabinet body 1, and a middle door 3 hinged to the middle of the cabinet body 1. The chassis 2 comprises a base 4, a front beam 5 arranged at the front end of the base 4, and rollers 6 arranged on both sides of the base 4. The front and rear ends of both sides of the base 4 are provided with the rollers 6. Tracks 7 cooperating with the rollers 6 are arranged on both sides of the cabinet body 1, and locking holes 8 are arranged at the front ends of the tracks 7. First locking pins 9 cooperating with the locking holes 8 are arranged on both sides of the front beam 5, and a handle 11 extending from the first long hole 10 of the front beam 5 is arranged on the first locking pin 9. The handle 11 can slide left and right in the first long hole 10, so that when the handle 11 is pushed, the first locking pin 9 can be driven to lock or unlock. An operating spindle 12 is arranged in the middle of the base 4, and a sheath 13 sleeved on the end of the operating spindle 12 is arranged at the front end of the front beam 5. The operating spindle 12 is usually a screw structure. By turning the operating spindle 12 by a crank, the base 4 can be pushed in or out. A floating lock plate 14 is provided at the end of the sheath 13 (that is, the lock plate 14 is set on the front beam 5 through a floating mounting member so that the lock plate 14 can be pushed forward or reset), and a middle door interlocking mechanism 15 is provided on both sides of the sheath 13 to lock and cooperate with the lock plate 14. Two middle door interlocking mechanisms 15 are symmetrically arranged (the right side is not shown in the figure). The middle door interlocking mechanism 15 includes a bracket 16, a linkage lever 17 hinged to the upper end of the bracket 16, a second lock pin 18 provided in the bracket 16, and a first spring 19 sleeved on the rear end of the second lock pin 18. The bracket 16 is installed on the front beam 5. The linkage lever 17 is provided with a power arm 20 cooperating with the middle door 3, a first resistance arm 21 cooperating with the first lock pin 9, and a second resistance arm 22 cooperating with the second lock pin 18. When the middle door 3 is closed, the middle door 3 applies pressure to the power arm 20, so that the first resistance arm 21 drives the first lock pin 9 to be inserted into the lock hole 8, and the second resistance arm 22 drives the second lock pin 18 away from the lock plate 14. At this time, the lock plate 14 can be pushed forward, so that the crank can be normally inserted to operate the operating spindle 12. When the middle door 3 is opened, under the action of the first spring 19, the second lock pin 18 is inserted into the rear end of the lock plate 14, so that the lock plate 14 cannot be pushed forward, and then the end surface of the sheath 13 blocks the insertion of the crank, preventing the operation of the operating spindle 12. In order to make the closing of the middle door 3 more labor-saving, the power arm 20 is longer than the first resistance arm 21 and the second resistance arm 22 to form a labor-saving lever, and the power arm 20 is tilted to facilitate the pressure on the middle door 3. Ideally, the power arm 20 is inclined at 45 degrees, the first resistance arm 21 is an extension of the front end of the power arm 20 and is triangular, and the second resistance arm 22 is vertically arranged, so that the structure of the first locking pin 9 is the most stable, the strength is the best, the volume is small, and it is easy to assemble.

[0027] Preferably, a labor-saving lever 23 is hinged on the front beam 5, and the labor-saving lever 23 passes through the second long hole 24 of the first lock pin 9 and overlaps the first resistance arm 21. When closing the middle door 3, the first resistance arm 21 applies pressure to the rear end of the labor-saving lever 23, and the front end of the labor-saving lever 23 applies pressure to the first lock pin 9, thereby inserting the first lock pin 9 into the lock hole 8. By providing the labor-saving lever 23, closing the middle door 3 is more labor-saving.

[0028] Preferably, the rear end of the first locking pin 9 is overlapped, and a circular hole 25 is provided at the overlapped position for the operating spindle 12 to pass through, a locking opening 63 is provided on one side of the circular hole 25, and a locking groove 26 that cooperates with the locking opening 63 is provided on the operating spindle 12. When the first locking pin 9 is unlocked from the locking hole 8, the locking opening 63 is locked into the locking groove 26. Thus, the first locking pin 9 can be prevented from rotating the operating spindle 12 when it is not locked. When the first locking pin 9 is locked from the locking hole 8, the circular hole 25 is aligned with the operating spindle 12, so that the operating spindle 12 can rotate normally.

[0029] Preferably, a positioning mechanism 30 is provided on both sides of the partition 29 of the inner cavity of the cabinet 1, and the positioning mechanism 30 includes a convex positioning plate 31, a first screw 32 provided at both ends of the convex positioning plate 31, and a second spring 33 provided at the lower end of the first screw 32. A fastening nut 34 is provided at the upper end of the first screw 32, and a spring retaining ring 35 is provided at the lower end of the first screw 32. The first screw 32 is fixed to the partition 29 by the fastening nut 34. The track 7 is provided with an upper edge 27 and a lower edge 28, and the roller 6 rolls between the upper edge 27 and the lower edge 28, and the roller 6 is positioned by the upper edge 27 and the lower edge 28. When the roller 6 passes through the positioning mechanism 30, the convex positioning plate 31 can be pressed down, and the roller 6 will not jump. The top of the convex positioning plate 31 extends from the lower edge 28 of the track 7 to be positioned and matched with the roller 6. When the chassis 2 is pushed into place, the roller 6 at the rear end thereof rolls to the front of the convex positioning plate 31, and the convex positioning plate 31 is reset under the action of the second spring 33, and the front inclined surface 311 of the convex positioning plate 31 can be positioned at the rear end of the roller 6. When the chassis 2 is withdrawn from place, the roller 6 at the front end thereof rolls to the rear of the convex positioning plate 31, and the convex positioning plate 31 is reset under the action of the second spring 33, and the rear inclined surface 312 of the convex positioning plate 31 can be positioned at the front end of the roller 6.

[0030] Preferably, the operating spindle 12 is provided with a hexagonal positioning nut 40 and fixed by a pin 64. Both ends of the hexagonal positioning nut 40 are provided with guide surfaces 41, and the locking plate 14 can enter the hexagonal positioning nut 40 more smoothly through the guide surfaces 41. The locking plate 14 is provided with a hexagonal positioning groove 42 adapted to the hexagonal positioning nut 40. The locking plate 14 is floatingly installed at the front end of the front beam 5 through the second screw rods 43 at both ends and the fourth spring 44 sleeved on the second screw rod 43. When the locking plate 14 is in the reset state, the hexagonal positioning groove 42 is embedded in the hexagonal positioning nut 40 to lock the operating spindle 12 and prevent it from rotating. This further improves the operating safety of the operating spindle 12.

[0031] Preferably, a positioning steel ball 38 is provided at the rear end of the operating spindle 12 through a steel ball installation cavity 37, and a third spring 39 is provided at the rear end of the positioning steel ball 38. A positioning pit is provided on the crank handle to cooperate with the positioning steel ball 38. Since the fourth spring 44 is provided at both ends of the lock plate 14 of the sheath 13, when the crank handle is inserted, it will be pushed out to facilitate the operation. The positioning steel ball 38 is provided to fix the crank handle to facilitate the operation.

[0032] Preferably, the second locking pin 18 includes a sliding portion 45, a guide column 46 provided at the rear end of the sliding portion 45, and a pin head 47 provided at the sliding portion 45. A through slot 48 is provided on the sliding portion 45, and a pressure portion 49 extending into the through slot 48 is provided at the front end of the second resistance arm 22. An arcuate surface 50 is provided at the front end of the pressure portion 49. The arcuate surface 50 can more smoothly push the sliding portion 45 to complete unlocking. A sliding groove 52 adapted to the sliding portion 45 is provided at the front end of the bracket 16, and a guide hole 53 adapted to the guide column 46 is provided at the rear end of the bracket 16, so that the sliding of the second locking pin 18 is more stable. A positioning step 54 for positioning the second resistance arm 22 is provided at the upper end of the bracket 16 to ensure that the second resistance arm 22 is in a vertical state.

[0033] Preferably, a bearing 55 is provided on the power arm 20. The bearing 55 and the pressure surface of the middle door 3 are rolled together to make the closing of the middle door 3 smoother.

[0034] Preferably, the roller 6 is connected to both sides of the base 4 through a self-lubricating axle assembly 56, and the self-lubricating axle assembly 56 includes an axle body 57, an axle nut 58 connected to the front end of the axle body 57, and an oil storage cavity 59 is provided in the axle body 57, and a group of circumferentially arranged oil outlet holes 60 are provided in the oil storage cavity 59 corresponding to the roller 6. A refueling hole 61 is provided at the outer end of the axle body 57, and a plugging screw 62 is provided on the refueling hole 61. During implementation: lubricating oil is added to the oil storage cavity 59, and the lubricating oil slowly penetrates between the roller 6 and the axle body 57 through the oil outlet holes 60 to play a self-lubricating role.

[0035] As mentioned above, the present invention is not limited in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the structures and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-voltage complete power distribution cabinet, comprising a cabinet body (1), a chassis vehicle (2) arranged in the cabinet body (1), and a middle door (3) hinged to the middle of the cabinet body (1), the chassis vehicle (2) comprising a base (4), a front beam (5) arranged at the front end of the base (4), and rollers (6) arranged on both sides of the base (4), tracks (7) cooperating with the rollers (6) are arranged on both sides of the cabinet body (1), the front end of the track (7) is provided with a lock hole (8), and the front beam (5) is provided with a lock hole (8) on both sides of the front beam (5) The locking hole (8) is locked with a first lock pin (9), the first lock pin (9) is provided with a handle (11) extending from a first long hole (10) of the front beam (5), an operating spindle (12) is provided in the middle of the base (4), and a sheath (13) is provided at the front end of the front beam (5) and is sleeved on the end of the operating spindle (12), a floating lock plate (14) is provided on the sheath (13), and a middle door interlocking mechanism (15) is provided on both sides to lock with the lock plate (14), characterized in that: The middle door interlocking mechanism (15) comprises a bracket (16), a linkage lever (17) hinged to the upper end of the bracket (16), a second lock pin (18) arranged in the bracket (16) and a first spring (19) sleeved on the rear end of the second lock pin (18); the linkage lever (17) is provided with a power arm (20) cooperating with the middle door (3), a first resistance arm (21) cooperating with the first lock pin (9) and a second resistance arm (22) cooperating with the second lock pin (18); a labor-saving lever (23) is hingedly connected to the front beam (5); the labor-saving lever (23) passes through the second long hole (24) of the first lock pin (9) and overlaps with the first resistance arm (21); When the middle door (3) is closed, the middle door (3) applies pressure to the power arm (20), so that the first resistance arm (21) applies pressure to the rear end of the effort-saving lever (23), and drives the front end of the effort-saving lever (23) to apply pressure to the first lock pin (9), so that the first lock pin (9) is inserted into the lock hole (8), and at the same time, the second resistance arm (22) drives the second lock pin (18) away from the lock plate (14); when the middle door (3) is opened, the second lock pin (18) is inserted into the rear end of the lock plate (14), so that the lock plate (14) cannot be pushed forward, and the end surface of the sleeve (13) blocks the insertion of the crank handle, thereby preventing the operation of the operating spindle (12).

2. The high voltage complete distribution cabinet according to claim 1 is characterized in that: The rear ends of the first locking pins (9) are overlapped, and a circular hole (25) is provided at the overlapped position for the operating spindle (12) to pass through. A locking opening (63) is provided on one side of the circular hole (25). A locking groove (26) matching with the locking opening (63) is provided on the operating spindle (12). When the first locking pin (9) is unlocked from the locking hole (8), the locking opening (63) is locked into the locking groove (26).

3. The high voltage complete distribution cabinet according to claim 1 is characterized in that: Positioning mechanisms (30) are provided on both sides of the partition (29) in the inner cavity of the cabinet (1), the positioning mechanism (30) comprising a convex positioning plate (31), a first screw (32) provided at both ends of the convex positioning plate (31), and a second spring (33) provided at the lower end of the first screw (32), the upper end of the first screw (32) is provided with a fastening nut (34), and the lower end is provided with a spring retaining ring (35), the track (7) is provided with an upper edge (27) and a lower edge (28), and the roller (6) is provided at The convex positioning plate (31) rolls between the upper edge (27) and the lower edge (28); the top of the convex positioning plate (31) extends from the lower edge (28) of the track (7) to be positioned and matched with the roller (6); when the chassis vehicle (2) is pushed into place, the roller (6) at its rear end is positioned and matched with the front inclined surface (311) of the convex positioning plate (31); when the chassis vehicle (2) is withdrawn from place, the roller (6) at its front end is positioned and matched with the rear inclined surface (312) of the convex positioning plate (31).

4. The high voltage complete distribution cabinet according to claim 1 is characterized in that: The operating spindle (12) is provided with a hexagonal positioning nut (40), and both ends of the hexagonal positioning nut (40) are provided with guide surfaces (41). The lock plate (14) is provided with a hexagonal positioning groove (42) adapted to the hexagonal positioning nut (40). The lock plate (14) is floated and mounted on the front end of the front beam (5) through second screw rods (43) at both ends and a fourth spring (44) sleeved on the second screw rods (43).

5. The high voltage complete distribution cabinet according to claim 4 is characterized in that: A positioning steel ball (38) is provided at the rear end of the operating spindle (12) through a steel ball installation cavity (37), and a third spring (39) is provided at the rear end of the positioning steel ball (38).

6. The high voltage complete distribution cabinet according to claim 1, characterized in that: The second locking pin (18) comprises a sliding portion (45), a guide column (46) arranged at the rear end of the sliding portion (45) and a pin head (47) arranged on the sliding portion (45); the sliding portion (45) is provided with a through slot (48); the front end of the second resistance arm (22) is provided with a pressure portion (49) extending into the through slot (48); the front end of the pressure portion (49) is provided with an arc surface (50); the front end of the bracket (16) is provided with a sliding groove (52) adapted to the sliding portion (45), the rear end is provided with a guide hole (53) adapted to the guide column (46), and the upper end is provided with a positioning step (54) for positioning the second resistance arm (22).

7. The high voltage complete distribution cabinet according to claim 1 is characterized in that: A bearing (55) is provided on the power arm (20).

8. The high voltage complete distribution cabinet according to claim 1, characterized in that: The roller (6) is connected to both sides of the base (4) via a self-lubricating axle assembly (56); the self-lubricating axle assembly (56) comprises an axle body (57) and an axle nut (58) connected to the front end of the axle body (57); an oil storage chamber (59) is provided in the axle body (57); and a group of circumferentially arranged oil outlet holes (60) are provided in the oil storage chamber (59) corresponding to the roller (6).

9. The high voltage complete distribution cabinet according to claim 8, characterized in that: The outer end of the wheel axle body (57) is provided with a refueling hole (61), and a blocking screw (62) is provided on the refueling hole (61).

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