Drawing rack of universal circuit breaker

Abstract

The utility model discloses a drawing frame of a universal circuit breaker, which belongs to the technical field of drawing frames of circuit breakers and comprises a circuit breaker, a fixed frame and a movable supporting plate, the circuit breaker is detachably mounted at the top end of the movable supporting plate, a plurality of limiting assemblies are arranged on two sides of the movable supporting plate, movable side plates are arranged at the outer ends of the limiting assemblies, and the fixed frame is positioned at the bottom end of the movable supporting plate. A driving assembly is arranged at the bottom end of the fixing frame and comprises a sliding block, a transmission belt and a guide rail, the sliding block is in sliding connection with the outer end of the guide rail, a circuit breaker is installed on a movable supporting plate, an installation block is fixed to the bottom end of the movable supporting plate, a servo motor drives a driving belt wheel to rotate, and then the transmission belt can drive the sliding block to move front and back. As the mounting block is fixed on the sliding block, the circuit breaker can be driven by the sliding block to move back and forth, and the working efficiency can be improved by the driving of the driving assembly, especially in large-scale operation.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker drawer, and more specifically to a universal circuit breaker drawer. Background Art

[0002] Universal circuit breaker is another name for the frame circuit breaker currently on the market. Frame circuit breaker is a mechanical switching device, which is mainly used to connect, carry and disconnect current under normal circuit conditions, and connect, carry for a certain time and disconnect current under specified abnormal circuit conditions. This type of circuit breaker usually has high breaking capacity and thermal stability, and is often used in places requiring high breaking capacity and selective protection, such as distributing electrical energy and protecting lines and power equipment from damage caused by abnormal conditions such as overload, undervoltage and short circuit. Its structure generally includes a steel frame, and all components are installed in the frame. This design enables the circuit breaker to withstand larger currents and voltages.

[0003] The Chinese patent publication number CN205811396U discloses a shaking mechanism for a drawer-type circuit breaker, wherein a first gear set meshing with a positioning slot is provided on the gear shaft, and a limit rod extending to the back of the gear shaft is provided on the positioning slot plate. When the limit rod is reached, the maximum position of the forward movement of the drag plate is limited, thereby preventing the first gear set from being disengaged from the meshing with the positioning slot due to excessive shaking during the shaking process, thereby preventing the circuit breaker body from being disengaged from the drawer.

[0004] The circuit breaker is installed in the distribution cabinet, but because it needs to be frequently maintained, it is necessary to remove the circuit breaker. The circuit breaker drawers on the market are currently driven by screws. The drawers and circuit breakers are moved out by hand. Manually turning the screws requires more manpower and time to complete, which is inefficient. At the same time, manual operation is easily affected by human factors. If you are not careful, it is easy to cause misoperation and increase the risk of circuit breaker damage.

[0005] Therefore, it is necessary to provide a universal circuit breaker drawer to solve the above problems. Utility Model Content

[0006] The utility model provides a universal circuit breaker drawer, which can improve the related art that the drawer and the circuit breaker are moved out by hand-cranking, and the manual rotation of the screw rod requires more manpower and time to complete, which is inefficient.

[0007] The embodiment of the present application provides a drawer for a universal circuit breaker, comprising a circuit breaker, a fixed frame and a movable support plate, wherein the circuit breaker is detachably mounted on the top of the movable support plate, a plurality of limit assemblies are arranged on both sides of the movable support plate, and a movable side plate is arranged on the outer end of the limit assemblies, the fixed frame is located at the bottom end of the movable support plate, and a driving assembly is arranged at the bottom end of the fixed frame, and the driving assembly comprises a slider, a transmission belt and a guide rail, the slider is slidably connected to the outer end of the guide rail, a mounting block is fixedly connected to the top of the slider, and the transmission belt is fixedly mounted on the inner side of the mounting block by bolts.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0009] (1) The circuit breaker is installed on a movable pallet. The mounting block is fixed at the bottom of the movable pallet. The servo motor drives the active pulley to rotate, so that the transmission belt can drive the slider to move forward and backward. Since the mounting block is fixed on the slider, the circuit breaker can be moved forward and backward by the slider. The drive of the drive component can improve work efficiency, especially in large-scale operations.

[0010] (2) Movable side panels are installed on both sides of the movable support plate through a limit assembly. The movable side panels can be rotated 90 degrees by abutting against the abutment block inside the limit assembly and the abutment groove inside the sleeve. When the circuit breaker is located in the distribution cabinet, the movable side panels can be folded to play a protective role. When the circuit breaker is moved out, the movable side panels can be unfolded to serve as storage boards, so that the staff can place tools conveniently and improve the convenience of use.

[0011] In some embodiments, the driving assembly also includes two auxiliary rails, the head and tail ends of the two auxiliary rails are fixedly connected to connecting plates, the bottom end of the movable support plate is fixedly connected to two movable blocks, the outer end of the fixed frame is provided with two sliding grooves 1 adapted to the movable blocks, the movable block passes through the sliding groove 1, and the bottom end of the movable block is slidably connected to the auxiliary rail.

[0012] In some embodiments, one of the connecting plates is fixedly connected to connecting frame 2 at its outer end, and the other connecting plate is fixedly connected to connecting frame 1 at its outer end. The top of connecting frame 1 is rotatably connected to a passive pulley, the top of connecting frame 2 is fixedly installed with a servo motor, and the two ends of the guide rail are respectively connected to connecting frame 2 and connecting frame 1.

[0013] In some embodiments, the servo motor output end is key-connected with a driving pulley, the passive pulley is connected to the driving pulley through a transmission belt, a second slide groove is opened at the outer end of the fixed frame, the mounting block passes through the second slide groove, and the mounting block is fixedly connected to the bottom end of the movable support plate.

[0014] In some embodiments, the limiting assembly includes a fixed block and a sleeve, the sleeve is fixedly installed on the outer end of the movable support plate, the sleeve is fixedly connected to the notch at the outer end of the movable side plate, the outer end of the fixed block is provided with a mounting groove adapted to the sleeve, and the outer end of the fixed block is fixedly connected with an abutment plate.

[0015] In some embodiments, a mounting ring is fixedly installed on the inner wall of the fixed block mounting groove, a plurality of through holes are opened at the outer end of the mounting ring, a plurality of telescopic springs are installed on the inner side of the mounting ring, a contact block is fixedly connected to the outer end of the telescopic spring, the outer end of the contact block passes through the through hole, and the contact block extends to the gap between the mounting ring and the mounting groove.

[0016] In some embodiments, a plurality of abutment grooves adapted to the abutment blocks are formed on the inner side wall of the sleeve, the sleeve is rotatably connected to the mounting ring, and the abutment blocks abut against the inner walls of the abutment grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the drive assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the exploded structure of the drive assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the movable support plate of the utility model;

[0022] Figure 5 It is a schematic diagram of the explosion structure of the limiting component of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Circuit breaker;

[0025] 2. Movable side panels;

[0026] 3. Movable pallet;

[0027] 4. Limiting assembly; 41. Fixing block; 42. Sleeve; 43. Mounting ring; 44. Telescopic spring; 45. Abutment block; 46. Abutment groove; 47. Through hole; 48. Abutment plate;

[0028] 5. Drive assembly; 51. Guide rail; 52. Auxiliary rail; 53. Connecting plate; 54. Mounting block; 55. Slider; 56. Servo motor; 57. Active pulley; 58. Transmission belt; 59. Passive pulley; 510. Connecting frame 1; 511. Connecting frame 2;

[0029] 6. Chute 1;

[0030] 7. Chute 2;

[0031] 8. Fixed frame;

[0032] 9. Activity block. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] Based on this, the existing problem in the related art of moving the drawer and the circuit breaker out by hand cranking can be improved. Manually turning the screw rod requires more manpower and time to complete, and the efficiency is low.

[0035] See also Figure 1-Figure 5 A universal circuit breaker drawer comprises a circuit breaker 1, a fixing frame 8 and a movable support plate 3. The circuit breaker 1 can be detachably mounted on the top of the movable support plate 3. A plurality of limit assemblies 4 are arranged on both sides of the movable support plate 3. A movable side plate 2 is arranged on the outer end of the limit assemblies 4. The fixing frame 8 is located at the bottom end of the movable support plate 3. A driving assembly 5 is arranged at the bottom end of the fixing frame 8. The driving assembly 5 comprises a slider 55, a transmission belt 58 and a guide rail 51. The slider 55 is slidably connected to the outer end of the guide rail 51. A mounting block 54 is fixedly connected to the top of the slider 55. The transmission belt 58 is fixedly mounted on the inner side of the mounting block 54 by bolts.

[0036] The device in this scheme is mainly used for installing the circuit breaker 1, and the circuit breaker 1 can be moved out of or into the distribution cabinet by means of electric control. The circuit breaker 1 is detachably mounted on the movable support plate 3 by bolts. The fixing frame 8 is located at the bottom end of the movable support plate 3. The fixing frame 8 is fixed inside the distribution cabinet and can be fixed by bolts or welding. The fixing frame 8 is mainly used to cover the driving assembly 5 below to increase its aesthetics and neatness. The fixing frame 8 below the fixing frame 8 is used to drive the movable support plate 3. The mounting block 54 is fixed at the bottom end of the movable support plate 3. The driving pulley 57 is driven to rotate by the servo motor 56, so that the transmission belt 58 can drive the slider 55 to move forward and backward. Since the mounting block 54 is fixed on the slider 55, the circuit breaker 1 can be moved forward and backward by the slider 55. The driving of the driving assembly 5 can improve the work efficiency, especially in large-scale operation, and can reduce the labor intensity of the staff.

[0037] On both sides of the movable support plate 3, the movable side panels 2 are rotatably installed by the limit assembly 4. The movable side panels 2 can be rotated ninety degrees by abutting against the abutment blocks 45 inside the limit assembly 4 and the abutment grooves 46 inside the sleeve 42. When the circuit breaker 1 is located in the distribution cabinet, the movable side panels 2 can be folded to protect it. When the circuit breaker 1 is moved out, the movable side panels 2 can be unfolded to serve as storage boards, so that the staff can place tools conveniently without placing them on the ground, thereby improving the convenience of use.

[0038] Optionally, in some embodiments, see Figure 1-Figure 4 The driving assembly 5 also includes two auxiliary rails 52, and the head and tail ends of the two auxiliary rails 52 are fixedly connected to connecting plates 53. The bottom end of the movable support plate 3 is fixedly connected to two movable blocks 9. The outer end of the fixed frame 8 is provided with two slide grooves 6 adapted to the movable blocks 9. The movable blocks 9 pass through the slide grooves 6, and the bottom ends of the movable blocks 9 are slidably connected to the auxiliary rails 52.

[0039] The outer end of one of the connecting plates 53 is fixedly connected to the connecting frame 2 511, and the outer end of the other connecting plate 53 is fixedly connected to the connecting frame 1 510. The top of the connecting frame 1 510 is rotatably connected to the passive pulley 59, and the top of the connecting frame 2 511 is fixedly installed with a servo motor 56. The two ends of the guide rail 51 are respectively connected to the connecting frame 2 511 and the connecting frame 1 510.

[0040] The output end of the servo motor 56 is keyed to a driving pulley 57, and a driven pulley 59 is connected to the driving pulley 57 through a transmission belt 58. A slide groove 7 is provided at the outer end of the fixed frame 8, and the mounting block 54 passes through the slide groove 7, and the mounting block 54 is fixedly connected to the bottom end of the movable support plate 3.

[0041] The drive assembly 5 in this solution is arranged at the bottom of the fixed frame 8, wherein the two auxiliary rails 52 are arranged in parallel, and the connecting plates 53 are fixed to the head and tail of the two auxiliary rails 52 by bolts. The two auxiliary rails 52 can be fixed to the inside of the power distribution cabinet by brackets, and the two auxiliary rails 52 and the two connecting plates 53 form a rectangular frame, and the connecting frame 2 511 and the connecting frame 1 510 are fixed on the two connecting plates 53 respectively, wherein the connecting frame 2 511 is mainly used to fix the servo motor 56, and the top of the connecting frame 1 510 is used The passive pulley 59 is rotatably installed, and a guide rail 51 is fixed between the connecting frame 2 511 and the connecting frame 1 510. The guide rail 51 is parallel to the auxiliary rail 52. The slider 55 is slidably connected to the guide rail 51. The top of the slider 55 is fixed with a mounting block 54. The output end of the servo motor 56 is key-connected to the active pulley 57. The active pulley 57 matches the passive pulley 59. The transmission belt 58 is sleeved on the outer periphery of the active pulley 57 and the passive pulley 59. The passive pulley 59 is driven by the transmission belt 58. The movable support plate 3 is driven by the active pulley 57, and the mounting block 54 is fixed to the outer end of the transmission belt 58 by bolts, so that when the transmission belt 58 rotates, the mounting block 54 can move with it. Two parallel slide grooves 6 are provided on the fixed frame 8, and two movable blocks 9 are fixed at the bottom end of the movable support plate 3. The movable block 9 passes through the slide groove 6 and extends to the auxiliary rail 52, and is slidably connected with it, mainly to increase the stability of the circuit breaker 1 when it moves and play a supporting role. A slide groove 27 is provided in the middle of the fixed frame 8. The slide groove 27 is mainly to allow the mounting block 54 to pass through and be fixedly connected with the bottom of the movable support plate 3. The active pulley 57 is driven to rotate by the servo motor 56, and the passive pulley 59 cooperates with the transmission belt 58 to rotate, so that the slider 55 can drive the mounting block 54 to move, so that the movable support plate 3 can drive the circuit breaker 1 to move forward and backward. Compared with the traditional hand-cranking using a screw, it can not only improve efficiency, but also can be more accurately controlled, and the moving operation can be accurately completed to avoid the influence of human factors.

[0042] Optionally, in some embodiments, see Figure 4 and Figure 5 The limiting assembly 4 includes a fixed block 41 and a sleeve 42. The sleeve 42 is fixedly installed on the outer end of the movable support plate 3. The sleeve 42 is fixedly connected to the notch at the outer end of the movable side plate 2. A mounting groove matching the sleeve 42 is opened at the outer end of the fixed block 41. The outer end of the fixed block 41 is fixedly connected with an abutment plate 48.

[0043] A mounting ring 43 is fixedly installed on the inner wall of the mounting groove of the fixing block 41, and a plurality of through holes 47 are opened at the outer end of the mounting ring 43. A plurality of telescopic springs 44 are installed on the inner side of the mounting ring 43. An abutment block 45 is fixedly connected to the outer end of the telescopic spring 44. The outer end of the abutment block 45 passes through the through hole 47, and the abutment block 45 extends to the gap between the mounting ring 43 and the mounting groove.

[0044] The inner wall of the sleeve 42 is provided with a plurality of abutment grooves 46 matched with the abutment blocks 45 . The sleeve 42 is rotatably connected to the mounting ring 43 , and the abutment blocks 45 abut against the inner walls of the abutment grooves 46 .

[0045] The limiting assembly 4 in the present scheme is mainly used to assist the movable side plate 2 to rotate and suspend. A plurality of limiting assemblies 4 are respectively arranged on both sides of the movable support plate 3. The fixed block 41 is fixed to the side wall of the movable support plate 3, and the sleeve 42 is fixed to the inner side of the notch at the bottom of the movable side plate 2. A mounting groove is provided at the outer end of the fixed block 41, and a mounting ring 43 is fixed to the inner wall of the mounting groove. A plurality of telescopic springs 44 are installed on the inner side of the mounting ring 43, and a through hole 47 corresponding to the number of the telescopic springs 44 is provided on the outer surrounding of the mounting ring 43. The outer end of the abutment block 45 is fixedly connected to the telescopic spring 44, and the protrusion on the other side of the abutment block 45 passes through the through hole 47 and extends to between the mounting ring 43 and the inner wall of the mounting groove of the fixed block 41. The inner side of the tube 42 is provided with a plurality of abutment grooves 46 that match the abutment block 45, and the distance between the sleeve 42 and the inner wall of the mounting groove of the mounting ring 43 and the fixed block 41 matches, and is rotatably connected to the mounting ring 43. Therefore, when the movable side panel 2 rotates, the portion of the sleeve 42 without the abutment groove 46 will press the abutment block 45 to shrink inwardly. When the abutment block 45 abuts against the abutment groove 46 again, the force of the telescopic spring 44 can reset the abutment block 45 and abut against the abutment groove 46 again, thereby limiting the movable side panel 2 so that it can hover after rotating to a certain angle. When the staff needs to use tools such as wrenches, they can be placed on the movable side panel 2, making it convenient for the staff to use.

[0046] It is worth mentioning that the abutment blocks 45 in the present solution are set to four, so that they can rotate at an angle of ninety degrees each time, and different numbers can also be set according to needs. An abutment plate 48 is also fixed to the outer end of the fixed block 41. When the movable side panel 2 is rotated ninety degrees to unfold, it will abut against the abutment plate 48, thereby increasing the load-bearing weight.

[0047] Working principle: when the circuit breaker 1 needs to be moved out for maintenance, the servo motor 56 needs to be started first. The output end of the servo motor 56 is key-connected to the active pulley 57, which matches the passive pulley 59. The transmission belt 58 is sleeved on the outer periphery of the active pulley 57 and the passive pulley 59. The servo motor 56 drives the active pulley 57 to rotate, and the passive pulley 59 cooperates with the transmission belt 58 to rotate, so that the slider 55 can drive the mounting block 54 to move, so that the movable support plate 3 can drive the circuit breaker 1 to move outward, so that the circuit breaker 1 is moved out, and then the movable side plate 2 can be rotated to unfold it, and the inner wall of the sleeve 42 will compress the abutment block 45 to shrink it inward. When the abutment block 45 abuts against the abutment groove 46 again, the force of the telescopic spring 44 can reset the abutment block 45 to abut against the abutment groove 46, and limit the movable side plate 2 so that it can be unfolded to place tools such as wrenches.

Claims

1. A universal circuit breaker drawer, comprising a circuit breaker (1), a fixing frame (8) and a movable support plate (3), characterized in that: The circuit breaker (1) is detachably mounted on the top of the movable support plate (3); a plurality of limit assemblies (4) are provided on both sides of the movable support plate (3); a movable side plate (2) is provided at the outer end of the limit assemblies (4); the fixing frame (8) is located at the bottom end of the movable support plate (3); and a driving assembly (5) is provided at the bottom end of the fixing frame (8); The driving assembly (5) comprises a slider (55), a transmission belt (58) and a guide rail (51); the slider (55) is slidably connected to the outer end of the guide rail (51); a mounting block (54) is fixedly connected to the top end of the slider (55); and the transmission belt (58) is fixedly mounted on the inner side of the mounting block (54) by means of bolts.

2. The universal circuit breaker drawer according to claim 1, characterized in that: The driving assembly (5) further comprises two auxiliary rails (52), the head ends and tail ends of the two auxiliary rails (52) are fixedly connected to connecting plates (53), the bottom end of the movable support plate (3) is fixedly connected to two movable blocks (9), the outer end of the fixed frame (8) is provided with two slide grooves (6) adapted to the movable blocks (9), the movable blocks (9) pass through the slide grooves (6), and the bottom ends of the movable blocks (9) are slidably connected to the auxiliary rails (52).

3. The universal circuit breaker drawer according to claim 2, characterized in that: The outer end of one of the connecting plates (53) is fixedly connected to the second connecting frame (511), and the outer end of the other connecting plate (53) is fixedly connected to the first connecting frame (510). The top end of the first connecting frame (510) is rotatably connected to a passive pulley (59), and the top end of the second connecting frame (511) is fixedly mounted with a servo motor (56). The two ends of the guide rail (51) are respectively connected to the second connecting frame (511) and the first connecting frame (510).

4. The universal circuit breaker drawer according to claim 3, characterized in that: The output end of the servo motor (56) is key-connected to a driving pulley (57), the driven pulley (59) is transmission-connected to the driving pulley (57) via a transmission belt (58), a second slide groove (7) is provided at the outer end of the fixed frame (8), the mounting block (54) passes through the second slide groove (7), and the mounting block (54) is fixedly connected to the bottom end of the movable support plate (3).

5. The universal circuit breaker drawer according to claim 1, characterized in that: The limiting assembly (4) comprises a fixed block (41) and a sleeve (42), wherein the sleeve (42) is fixedly mounted on the outer end of the movable support plate (3), the sleeve (42) is fixedly connected to the notch at the outer end of the movable side plate (2), the outer end of the fixed block (41) is provided with a mounting groove adapted to the sleeve (42), and the outer end of the fixed block (41) is fixedly connected to an abutment plate (48).

6. The universal circuit breaker drawer according to claim 5, characterized in that: A mounting ring (43) is fixedly mounted on the inner wall of the mounting groove of the fixing block (41); a plurality of through holes (47) are formed at the outer end of the mounting ring (43); a plurality of telescopic springs (44) are mounted on the inner side of the mounting ring (43); an abutment block (45) is fixedly connected to the outer end of the telescopic spring (44); the outer end of the abutment block (45) passes through the through hole (47), and the abutment block (45) extends to the gap between the mounting ring (43) and the mounting groove.

7. The universal circuit breaker drawer according to claim 6, characterized in that: The inner side wall of the sleeve (42) is provided with a plurality of abutment grooves (46) matched with the abutment blocks (45); the sleeve (42) is rotatably connected to the mounting ring (43); and the abutment blocks (45) abut against the inner walls of the abutment grooves (46).

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