Frame type circuit breaker drawing rack

Abstract

The utility model discloses a frame-type circuit breaker drawing rack, which belongs to the technical field of circuit breaker drawing racks and comprises a frame-type circuit breaker, an outer fixing frame and a movable drawing box, the frame-type circuit breaker is detachably mounted at the top end of the movable drawing box, the outer fixing frame is arranged outside the movable drawing box in a surrounding manner, and sliding rail assemblies are arranged on two sides of the outer fixing frame. The outer ends of the two sliding rail assemblies are both provided with the limiting assemblies, the frame-type circuit breaker is installed on the movable drawing box, the movable drawing box can be drawn out through the sliding rail assemblies installed on the two sides, and therefore maintenance can be facilitated, the whole circuit breaker does not need to be disassembled, and the sliding wheels are arranged on the supporting frame fixed to the tail end of the movable drawing box. When the sliding rail assembly drives the frame-type circuit breaker to be withdrawn, the sliding wheels abut against the abutting frame, the abutting frame and the rotating hinge are pressed downwards, damping is provided, then secondary buffering can be carried out through cooperation of the buffering spring and the buffering block, and the impact force generated when the sliding rail assembly drives the frame-type circuit breaker to be withdrawn can be reduced.

Description

Technical Field

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

[0002] A frame-type circuit breaker is an electrical device used to protect electrical equipment from damage caused by faults such as overload and short circuit in an electrical system. It is often used in larger capacity electrical systems such as industrial facilities, power plants, distribution stations, etc. This type of circuit breaker is supported by a fixed metal frame and contains components such as the circuit breaker's control unit, trigger mechanism, fuse or magnetic trigger. When an overload or short circuit occurs in the circuit, the frame-type circuit breaker will quickly cut off the current to prevent damage to the electrical equipment or circuit.

[0003] The Chinese patent announcement number CN221282014U discloses a frame-type circuit breaker that is easy to disassemble and assemble. The fixing block is clamped by a fixing component to provide a first fixing effect. The fixing rod passes through the fixing block and abuts against the first blind hole to provide a second fixing effect. The double fixing measures ensure that the frame-type circuit breaker is reliably connected to the fixed base. When disassembly is required, the fixing component is pulled away from the side wall of the fixing block, the fixing rod is pulled away from the blind hole and the fixing through hole by pulling the handle. The trigger component releases the reaction force to push the frame-type circuit breaker up a certain distance to prevent the fixing component from extending, and the disassembly steps are completed, so that the product has the advantages of reliable fixation and reduced disassembly and assembly time.

[0004] Since the frame-type circuit breaker is large in size and suitable for complex power systems, it is easy to perform maintenance more frequently in order to improve safety. The installation frame in the above scheme is fixed, and the frame-type circuit breaker needs to be disassembled when maintenance is required, which will increase the workload.

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

[0006] The utility model provides a frame type circuit breaker drawer, which can improve the existing fixed installation frame in the related technology. When maintenance is required, the frame type circuit breaker needs to be disassembled, which increases the workload.

[0007] An embodiment of the present application provides a frame-type circuit breaker drawer, comprising a frame-type circuit breaker, an external fixed frame and a movable drawer, wherein the frame-type circuit breaker is detachably mounted on the top of the movable drawer, the external fixed frame is arranged outside the movable drawer, and slide rail assemblies are arranged on both sides of the external fixed frame, and limit assemblies are arranged on the outer ends of the two slide rail assemblies, and two symmetrically distributed buffer assemblies are arranged between the movable drawer and the slide rail assemblies, and the buffer assemblies include an abutment frame, a rotating hinge and a pulley, the abutment frame is fixedly mounted on one side of the rotating hinge, the top of the abutment frame is arranged to protrude upward, and the pulley abuts against the abutment frame.

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

[0009] The frame-type circuit breaker is installed on a movable drawer box, and the movable drawer box can be pulled outward through the slide rail assemblies installed on both sides, so that it is easy to inspect and repair without disassembling the entire circuit breaker. A pulley is provided on the support frame fixed at the end of the movable drawer box. When the movable drawer box is reset, the pulley will abut against the abutment frame, pressing the abutment frame and the rotating hinge downward, thereby providing damping, and then secondary buffering can be performed through the cooperation of the buffer spring and the buffer block, which can reduce the impact force when the slide rail assembly drives the frame-type circuit breaker to be withdrawn, thereby improving the protection of the frame-type circuit breaker.

[0010] In some embodiments, the slide rail assembly includes a primary slide rail and a fixed slide rail, the primary slide rail is fixedly installed on the outer end of the movable drawer, the fixed slide rail is fixedly installed on the inner side of the outer fixed frame, and the outer end of the primary slide rail is slidably connected to a secondary slide rail.

[0011] In some embodiments, the secondary slide rail is slidably connected to the fixed slide rail, and the secondary slide rail is located between the primary slide rail and the fixed slide rail, the outer end of the fixed slide rail is fixedly connected to a connecting plate, and the outer end of the fixed slide rail is fixedly connected to a fixed plate.

[0012] In some embodiments, the buffer assembly also includes a support frame, the support frame is fixedly mounted on the outer end of the movable drawer, the pulley is rotatably mounted on one end of the support frame close to the abutment frame, the rotating hinge is fixedly mounted on the bottom end of the connecting plate away from the abutment frame, the rotating hinge is installed with a torsion spring, and the rotating hinge is reset by the force of the torsion spring.

[0013] In some embodiments, a buffer spring is fixedly connected to the outer end of the fixing plate, and a buffer block is fixedly connected to one end of the buffer spring away from the fixing plate, and the buffer block is made of rubber material.

[0014] In some embodiments, the limiting assembly includes an extension plate and a sleeve, the extension plate is fixedly mounted on the outer end of the outer fixed frame, the outer end of the extension plate is rotatably connected to a mounting tube, a telescopic spring is installed inside the mounting tube, and the sleeve is slidably connected to the outer end of the mounting tube.

[0015] In some embodiments, the outer end of the sleeve is fixedly connected to a pulling block, the outer end of the pulling block is provided with anti-slip grooves, the other end of the telescopic spring is fixedly connected to the inner side of the pulling block, the outer end of the movable drawer is fixedly connected to a front baffle, both ends of the front baffle are provided with limiting holes, the limiting holes are adapted to the mounting tube, and the outer end of the sleeve is abutted against the outer end of the front baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the slide rail assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the explosion structure of the limit assembly of the utility model;

[0020] Figure 4 It is a schematic diagram of the explosion structure of the buffer component of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Frame type circuit breaker;

[0023] 2. External fixing frame;

[0024] 3. Limiting assembly; 31. Sleeve; 32. Pulling block; 33. Telescopic spring; 34. Mounting tube; 35. Limiting hole; 36. Extension plate;

[0025] 4. Slide rail assembly; 41. Primary slide rail; 42. Secondary slide rail; 43. Fixed slide rail;

[0026] 5. Front baffle;

[0027] 6. Buffer assembly; 61. Support frame; 62. Pulley; 63. Abutment frame; 64. Rotating hinge; 65. Torsion spring; 66. Buffer block; 67. Buffer spring;

[0028] 7. Activity draw box;

[0029] 8. Fixed plate;

[0030] 9. Connecting plate. DETAILED DESCRIPTION

[0031] 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.

[0032] Based on this, the existing installation frame in the related art is fixed, and when maintenance is required, the frame-type circuit breaker needs to be disassembled, which increases the workload.

[0033] See also Figure 1-Figure 4 A frame-type circuit breaker drawer comprises a frame-type circuit breaker 1, an outer fixed frame 2 and a movable drawer 7. The frame-type circuit breaker 1 is detachably mounted on the top of the movable drawer 7. The outer fixed frame 2 is arranged outside the movable drawer 7. Slide rail assemblies 4 are arranged on both sides of the outer fixed frame 2. Limiting assemblies 3 are arranged on the outer ends of the two slide rail assemblies 4. Two symmetrically distributed buffer assemblies 6 are arranged between the movable drawer 7 and the slide rail assembly 4. The buffer assembly 6 comprises an abutment frame 63, a rotating hinge 64 and a pulley 62. The abutment frame 63 is fixedly mounted on one side of the rotating hinge 64. The top of the abutment frame 63 is arranged to be upwardly protruding, and the pulley 62 abuts against the abutment frame 63.

[0034] The slide rail assembly 4 includes a primary slide rail 41 and a fixed slide rail 43. The primary slide rail 41 is fixedly installed on the outer end of the movable drawer 7, and the fixed slide rail 43 is fixedly installed on the inner side of the outer fixed frame 2. The outer end of the primary slide rail 41 is slidably connected to the secondary slide rail 42.

[0035] The secondary slide rail 42 is slidably connected to the fixed slide rail 43 , and the secondary slide rail 42 is located between the primary slide rail 41 and the fixed slide rail 43 , the outer end of the fixed slide rail 43 is fixedly connected to a connecting plate 9 , and the outer end of the fixed slide rail 43 is fixedly connected to a fixing plate 8 .

[0036] The device in this scheme is mainly used for installing the frame type circuit breaker 1. The frame type circuit breaker 1 is mainly used for protecting the electrical equipment from damage caused by overload, short circuit and other faults in the electrical system. Compared with the ordinary circuit breaker, it can carry a larger current, so the size will be larger. The frame type circuit breaker 1 can be detachably installed on the movable drawer 7 by bolts or buckles. Slide rail assemblies 4 are arranged on both sides of the movable drawer 7. The slide rail assembly 4 is mainly used for supporting and enabling the movable drawer 7 to drive the frame type circuit breaker 1 to move. The movable drawer 7 can be pulled outward by the slide rail assemblies 4 installed on both sides, so that it is convenient for maintenance without disassembling the entire circuit breaker. Two limit assemblies 3 are installed at the outer ends of the movable drawer 7 and the outer fixed frame 2. The limit assembly 3 is mainly used for limiting, so that the movable drawer 7 drives the frame type circuit breaker 1 to reset and then locks it to prevent it from sliding out by itself.

[0037] An outer fixed frame 2 is arranged outside the movable drawer 7, and two slide rail assemblies 4 are located between the movable drawer 7 and the outer fixed frame 2, wherein the outer fixed frame 2 is fixed in the distribution box, and the outer fixed frame 2 is arranged in a U shape, and the outer fixed frame 2 can be fixed inside the distribution cabinet by bolts or welding, and is immovable. A buffer assembly 6 is arranged on the tail of the movable drawer 7 and the slide rail assembly 4, and the buffer assembly 6 is mainly used for buffering. Since the volume of the frame-type circuit breaker 1 is large, the mass is large, and the movable When the drawer box 7 is driven to reset into the distribution cabinet, it is easy to produce a collision due to the large inertia, which will affect the precision electrical components inside the frame-type circuit breaker 1. When the movable drawer box 7 is reset, the pulley 62 will abut against the abutment frame 63, pressing the abutment frame 63 and the rotating hinge 64 downward, thereby providing damping, and then the buffer spring 67 and the buffer block 66 cooperate to perform secondary buffering, which can reduce the impact force when the slide rail assembly 4 drives the frame-type circuit breaker 1 to be withdrawn, thereby improving the protection of the frame-type circuit breaker 1.

[0038] The slide rail assembly 4 is mainly composed of a primary slide rail 41, a secondary slide rail 42 and a fixed slide rail 43. The primary slide rail 41 is fixed to the outside of the movable drawer 7, and the fixed slide rail 43 is fixed to the inside of the outer fixed frame 2. One side of the secondary slide rail 42 is slidably connected to the primary slide rail 41 through a ball and a slide groove, and the other side of the secondary slide rail 42 is slidably connected to the fixed slide rail 43 in the same way. The secondary slide rail 42 is located between the primary slide rail 41 and the fixed slide rail 43. By cooperating with the primary slide rail 41 and the secondary slide rail 42, a two-stage pull-out can be achieved, so that the frame-type circuit breaker 1 can be completely pulled out, which is convenient for the staff to carry out maintenance.

[0039] Optionally, in some embodiments, see Figure 2 and Figure 4The buffer assembly 6 also includes a support frame 61, which is fixedly mounted on the outer end of the movable drawer 7. The pulley 62 is rotatably mounted on one end of the support frame 61 close to the abutment frame 63. The rotating hinge 64 is fixedly mounted on the bottom end of the connecting plate 9 away from the abutment frame 63. The rotating hinge 64 is installed with a torsion spring 65, and the rotating hinge 64 is reset by the force of the torsion spring 65.

[0040] A buffer spring 67 is fixedly connected to the outer end of the fixing plate 8 , and a buffer block 66 is fixedly connected to one end of the buffer spring 67 away from the fixing plate 8 . The buffer block 66 is made of rubber material.

[0041] The support frame 61 in the present scheme is fixed to the tail of the movable drawer 7. The support frame 61 is L-shaped and is fixed to the outer end of the movable drawer 7 by bolts. The end of the support frame 61 is rotatably connected to the pulley 62, and the end of the fixed slide rail 43 is fixed to the connecting plate 9. The bottom end of the connecting plate 9 is fixed to the rotating hinge 64. The rotating hinge 64 is composed of two rotating blades, one of which is fixed to the bottom end of the connecting plate 9, and the other is fixed to the abutment frame 63. The two blades are rotatably connected, and at the same time, a torsion spring 65 is installed in the middle. The two ends of the torsion spring 65 are stuck with the two sides of the rotating hinge 64, so that the rotating hinge 64 can be reset after rotation. The top of the abutment frame 63 protrudes upward, and the whole is arranged in an isosceles triangle. The fixed slide rail 43 is also fixed with a fixed plate 8. The fixed plate 8 is located below the connecting plate 9. The fixed plate 8 is fixed by screws. The buffer spring 67 is fixed at the other end of the buffer spring 67. The buffer block 66 is made of rubber with a buffering effect. When the movable drawer 7 is reset through the slide rail assembly 4 and enters the distribution box, the pulley 62 on the support frame 61 will first abut against the abutment frame 63 on the rotating hinge 64. At this time, the pulley 62 will press the abutment frame 63 downward to rotate the rotating hinge 64, so that it can not only form the first section of buffering, but also serve as a reminder, so that the user can feel that it is about to hit the bottom. Then, when the pulley 62 passes over the connecting plate 9, the rotating hinge 64 will be reset by the force of the torsion spring 65, and then the tail of the movable drawer 7 will abut against the buffer block 66. The force of the buffer spring 67 can perform secondary buffering, so that the movable drawer 7 can reduce the impact force when it is closed, thereby protecting the frame-type circuit breaker 1 and preventing it from being damaged.

[0042] Optionally, in some embodiments, see Figure 2 and Figure 3 The limiting assembly 3 includes an extension plate 36 and a sleeve 31. The extension plate 36 is fixedly installed on the outer end of the outer fixed frame 2. The outer end of the extension plate 36 is rotatably connected to a mounting tube 34. A telescopic spring 33 is installed inside the mounting tube 34. The sleeve 31 is slidably connected to the outer end of the mounting tube 34.

[0043] The outer end of the sleeve 31 is fixedly connected to a pulling block 32, and the outer end of the pulling block 32 is provided with anti-slip grooves. The other end of the telescopic spring 33 is fixedly connected to the inner side of the pulling block 32. The outer end of the movable drawer 7 is fixedly connected to the front baffle 5. Both ends of the front baffle 5 are provided with limiting holes 35. The limiting holes 35 are adapted to the mounting tube 34, and the outer end of the sleeve 31 is against the outer end of the front baffle 5.

[0044] The two limiting components 3 in this scheme are symmetrically arranged, the extension plate 36 is fixed on the outer fixing frame 2, and the installation tube 34 is rotatably connected on the extension plate 36. The interior of the installation tube 34 is hollow, and a telescopic spring 33 is fixed therein. A sleeve 31 is sleeved on the outer surrounding of the installation tube 34, and the sleeve 31 is slidably connected to the outer end of the installation tube 34. A pulling block 32 is fixed at the outer end of the sleeve 31. The anti-slip pattern provided on the pulling block 32 prevents the user from slipping when pulling, and the other end of the telescopic spring 33 is fixedly connected to the inner side of the pulling block 32. The front baffle 5 is fixed at the front end of the movable drawer 7, and limiting holes 35 are provided at both ends of the front baffle 5. The inner diameter of the limiting hole 35 matches the mounting tube 34. When the user closes the movable drawer 7 and pushes it inward to reset, the front baffle 5 will abut against the extension plate 36. At this time, the pulling block 32 is pulled outward to make the sleeve 31 slide on the mounting tube 34. At this time, the mounting tube 34 is rotated again so that the mounting tube 34 can be rotated into the limiting hole 35. At this time, after releasing the hand, the sleeve 31 will reset and abut against the outer end of the front baffle 5 through the force of the telescopic spring 33. Since the diameter of the sleeve 31 is larger than the mounting tube 34, the sleeve 31 will abut against the outer end of the front baffle 5, thereby achieving the role of limiting and preventing the movable drawer 7 from accidentally sliding out, which can not only increase stability but also improve its convenience of use.

[0045] Working principle: when it is necessary to overhaul the frame-type circuit breaker 1, the movable drawer box 7 can be pulled outwards through the slide rail assemblies 4 installed on both sides, so that the frame-type circuit breaker 1 can be pulled out for overhaul. When the overhaul is completed, the movable drawer box 7 can be directly pushed inwards. When the movable drawer box 7 is reset through the slide rail assembly 4, the pulley 62 on the support frame 61 will first abut against the abutment frame 63 on the rotating hinge 64, so as to form a first section of buffering. Then the tail of the movable drawer box 7 will abut against the buffer block 66 for secondary buffering to reduce the impact force. When the front baffle 5 abuts against the extension plate 36, the pulling block 32 is pulled outward, and then the mounting cylinder 34 is rotated to make the mounting cylinder 34 rotate into the limiting hole 35. After releasing the hand, the sleeve 31 will be reset to abut against the outer end of the front baffle 5 through the action of the telescopic spring 33, and the sleeve 31 will abut against the outer end of the front baffle 5, thereby achieving the limiting effect.

Claims

1. A frame-type circuit breaker drawer, comprising a frame-type circuit breaker (1), an outer fixed frame (2) and a movable drawer box (7), characterized in that: The frame-type circuit breaker (1) is detachably mounted on the top of the movable drawer (7); the outer fixed frame (2) is arranged outside the movable drawer (7) and surrounds the outer fixed frame (2); slide rail assemblies (4) are arranged on both sides of the outer fixed frame (2); limit assemblies (3) are arranged at the outer ends of the two slide rail assemblies (4); and two symmetrically distributed buffer assemblies (6) are arranged between the movable drawer (7) and the slide rail assemblies (4); The buffer assembly (6) comprises an abutment frame (63), a rotating hinge (64) and a pulley (62); the abutment frame (63) is fixedly mounted on one side of the rotating hinge (64); the top end of the abutment frame (63) is arranged to protrude upwards; and the pulley (62) abuts against the abutment frame (63).

2. The frame-type circuit breaker drawer according to claim 1, characterized in that: The slide rail assembly (4) comprises a primary slide rail (41) and a fixed slide rail (43); the primary slide rail (41) is fixedly mounted on the outer end of the movable drawer (7); the fixed slide rail (43) is fixedly mounted on the inner side of the outer fixed frame (2); and the outer end of the primary slide rail (41) is slidably connected to a secondary slide rail (42).

3. The frame type circuit breaker drawer according to claim 2, characterized in that: The secondary slide rail (42) is slidably connected to the fixed slide rail (43), and the secondary slide rail (42) is located between the primary slide rail (41) and the fixed slide rail (43). The outer end of the fixed slide rail (43) is fixedly connected to a connecting plate (9), and the outer end of the fixed slide rail (43) is fixedly connected to a fixing plate (8).

4. The frame type circuit breaker drawer according to claim 3, characterized in that: The buffer assembly (6) further comprises a support frame (61), wherein the support frame (61) is fixedly mounted on the outer end of the movable drawer (7), the pulley (62) is rotatably mounted on one end of the support frame (61) close to the abutment frame (63), and the rotating hinge (64) is fixedly mounted on the bottom end of the connecting plate (9) on a side away from the abutment frame (63), and the rotating hinge (64) is mounted with a torsion spring (65), and the rotating hinge (64) is reset by the action force of the torsion spring (65).

5. The frame type circuit breaker drawer according to claim 4, characterized in that: The outer end of the fixing plate (8) is fixedly connected to a buffer spring (67), and the end of the buffer spring (67) away from the fixing plate (8) is fixedly connected to a buffer block (66), wherein the buffer block (66) is made of rubber material.

6. The frame-type circuit breaker drawer according to claim 1, characterized in that: The limiting assembly (3) comprises an extension plate (36) and a sleeve (31); the extension plate (36) is fixedly mounted on the outer end of the outer fixed frame (2); the outer end of the extension plate (36) is rotatably connected to a mounting tube (34); a telescopic spring (33) is mounted inside the mounting tube (34); and the sleeve (31) is slidably connected to the outer end of the mounting tube (34).

7. The frame-type circuit breaker drawer according to claim 6, characterized in that: The outer end of the sleeve (31) is fixedly connected to a pulling block (32), the outer end of the pulling block (32) is provided with anti-slip grooves, the other end of the telescopic spring (33) is fixedly connected to the inner side of the pulling block (32), the outer end of the movable drawer (7) is fixedly connected to a front baffle (5), both ends of the front baffle (5) are provided with limiting holes (35), the limiting holes (35) are adapted to the mounting tube (34), and the outer end of the sleeve (31) abuts against the outer end of the front baffle (5).

Images