Circuit breaker protection structure

Abstract

The utility model discloses a circuit breaker protection structure, which relates to the technical field of circuit breakers and comprises a fixing frame, and a fixing mechanism is movably arranged in an inner cavity of the fixing frame. According to the circuit breaker protection structure, hole sites in a second connecting plate and a third connecting plate are aligned, a screw rod is inserted into a screw sleeve in advance, a pull plate is pulled backwards, a sliding rod slides backwards, at the moment, a first ratchet wheel and a second ratchet wheel are not in an engaged state, the screw rod can rotate normally, and the screw rod is rotated forwards; after installation, a pulling plate is loosened, a spring pushes a second ratchet wheel to reset, a first ratchet wheel and the second ratchet wheel are in an engaged state, when equipment vibrates, a screw cannot rotate due to limiting of the second ratchet wheel, and the breaker body is fixed to the fixing frame. The rotation phenomenon of the screw rod is avoided, the screw rod is prevented from loosening, and potential safety hazards possibly occurring to the circuit breaker body are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker protection structure. Background Art

[0002] Circuit breakers are important electrical devices for the protection and operation of power systems. They can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. Circuit breakers have many structures and different types, but they are basically composed of a conductive main circuit, an insulating support, an arc extinguishing chamber, and an operating mechanism.

[0003] With reference to the Chinese patent application number "CN219226904U" of "A protection structure of a circuit breaker for an electrical cabinet", the utility model discloses a protection structure of a circuit breaker for an electrical cabinet, and specifically relates to the technical field of circuit breaker protection equipment. The utility model comprises a frame, a tidying device is arranged inside the frame, a protective device is arranged inside the frame, the tidying device comprises a first rectangular block, the first rectangular block is fixedly connected to the frame, a second rectangular block is fixedly connected to one side of the first rectangular block, a plurality of first circular holes are opened on one side of the second rectangular block, and a plurality of second circular holes are opened on one side of the frame. The utility model arranges the tidying device so that when the circuit breaker is fixedly installed inside the frame, the wires can be inserted into the second circular holes and the inside of the first circular holes to connect and fix with the circuit breaker, so that the excess wires can be stored inside the first circular holes, thereby reducing the situation that the excess wires are too long to affect the installation of the circuit breaker and the mess inside the frame;

[0004] However, since existing circuit breakers are fixed at the installation site by bolts, the circuit breaker fixing site may cause vibration at the bolts due to the operation of the device, causing the bolts to rotate and become loose, posing certain safety hazards. In this regard, we have proposed a circuit breaker protection structure to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a circuit breaker protection structure, which solves the problem that circuit breakers are fixed at the installation location by bolts, and the bolts at the fixing location of the circuit breaker may vibrate due to the operation of the device, causing the bolts to rotate and become loose, posing certain safety hazards.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a circuit breaker protection structure, comprising a fixed frame, an inner cavity of the fixed frame is movably provided with a fixing mechanism, the number of the fixing mechanisms is four groups, a front surface of the fixed frame is movably connected with a first connecting plate, a front surface of the first connecting plate is fixedly connected with a protection frame, a hinge is fixedly provided on the left side of the protection frame, and a box door is fixedly provided on the right side of the hinge;

[0007] The fixing mechanism includes a second connecting plate, one end of which is fixedly connected to one end of the first connecting plate, an inner cavity of the second connecting plate is slidably connected with a screw, a third connecting plate is fixedly connected to the back surface of the fixing frame, and a screw sleeve is fixedly connected to the back surface of the third connecting plate.

[0008] Preferably, the inner cavity of the spiral sleeve is threadedly connected to the surface of the screw rod, and the four sets of fixing mechanisms are respectively located at the top and bottom of the left and right side surfaces of the first connecting plate.

[0009] Preferably, the inner cavity of the screw sleeve is slidably connected to a movable plate, the outer surface of the movable plate is fixedly connected to a fixed plate, the back surface of the fixed plate is fixedly connected to a pull plate, and the back surface of the screw is fixedly connected to a first ratchet.

[0010] Preferably, the back surface of the movable plate is fixedly connected with a sliding rod, the inner cavity of the screw sleeve is fixedly connected with a limiting ring, the surface movable sleeve of the sliding rod is provided with a spring, the rear side of the spring is fixedly connected with the front side of the limiting ring, the front side of the spring is fixedly connected with the rear side of the movable plate, the front surface of the pull plate is fixedly connected with the back surface of the sliding rod, the front surface of the sliding rod is fixedly connected with a second ratchet, and the front surface of the second ratchet is meshed with the back surface of the first ratchet.

[0011] Preferably, the inner cavity of the limiting ring is slidably connected to the surface of the sliding rod.

[0012] Preferably, a circuit breaker body is movably provided in the inner cavity of the protection frame.

[0013] Beneficial Effects

[0014] The utility model provides a circuit breaker protection structure. Compared with the prior art, it has the following beneficial effects:

[0015] The circuit breaker protection structure aligns the holes on the second connecting plate and the third connecting plate, inserts the screw into the screw sleeve in advance, and pulls the pull plate backward to make the slide bar slide backward. At this time, the first ratchet and the second ratchet are not in a meshing state, and the screw can rotate normally. The screw is rotated forward to fix the first connecting plate, the protection frame and the circuit breaker body on the fixed frame to complete the installation of the circuit breaker body. After installation, the pull plate is released, and the spring pushes the second ratchet to reset, so that the first ratchet and the second ratchet are in a meshing state. At this time, when the equipment vibrates, the screw cannot rotate due to the limitation of the second ratchet, thereby avoiding the screw from rotating, causing the screw to loosen, and reducing the potential safety hazards of the circuit breaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Main view of internal structure;

[0018] Figure 3 This is the front view of the fixing mechanism of the utility model;

[0019] Figure 4 This is the main view of the local structure of the fixing mechanism of the utility model Figure 1 ;

[0020] Figure 5 This is the main view of the local structure of the fixing mechanism of the utility model Figure 2 .

[0021] In the figure: 1. fixing mechanism; 2. first connecting plate; 3. protection frame; 4. box door; 5. hinge; 6. fixing frame; 7. circuit breaker body; 101. screw; 102. second connecting plate; 103. third connecting plate; 104. screw sleeve; 105. first ratchet; 106. second ratchet; 107. pull plate; 108. fixing plate; 109. moving plate; 110. limiting ring; 111. sliding rod; 112. spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 - Figure 5 The utility model provides a technical solution, which specifically includes the following embodiments:

[0024] Embodiment 1:

[0025] A circuit breaker protection structure comprises a fixed frame 6, an inner cavity of the fixed frame 6 is movably provided with a fixing mechanism 1, the number of the fixing mechanisms 1 is four, a front surface of the fixed frame 6 is movably connected with a first connecting plate 2, a front surface of the first connecting plate 2 is fixedly connected with a protection frame 3, a hinge 5 is fixedly provided on the left side of the protection frame 3, and a box door 4 is fixedly provided on the right side of the hinge 5;

[0026] The fixing mechanism 1 includes a second connecting plate 102, one end of which is fixedly connected to one end of the first connecting plate 2, a screw 101 is slidably connected to the inner cavity of the second connecting plate 102, a third connecting plate 103 is fixedly connected to the back surface of the fixing frame 6, and a screw sleeve 104 is fixedly connected to the back surface of the third connecting plate 103;

[0027] When the first connecting plate 2 is installed, the holes on the second connecting plate 102 and the third connecting plate 103 are aligned, the screw 101 is pre-inserted into the screw sleeve 104, and the pull plate 107 is pulled backward to make the sliding bar 111 slide backward. At this time, the first ratchet 105 and the second ratchet 106 are not in a meshing state, and the screw 101 can rotate normally. The screw 101 is rotated forward to fix the first connecting plate 2, the protection frame 3 and the circuit breaker body 7 on the fixed frame 6 to complete the installation of the circuit breaker body 7. After installation, the pull plate 107 is released, and the spring 112 pushes the second ratchet 106 to reset, so that the first ratchet 105 and the second ratchet 106 are in a meshing state. At this time, when the equipment vibrates, the screw 101 cannot rotate due to the limitation of the second ratchet 106, thereby avoiding the screw 101 from rotating, causing the screw 101 to loosen, thereby reducing the potential safety hazards of the circuit breaker body 7.

[0028] The inner cavity of the screw sleeve 104 is threadedly connected to the surface of the screw rod 101, and the four sets of fixing mechanisms 1 are respectively located at the top and bottom of the left and right side surfaces of the first connecting plate 2;

[0029] The inner cavity of the screw sleeve 104 is threadedly connected to the surface of the screw rod 101 , so that the inner cavity of the screw sleeve 104 and the screw rod 101 can be fixed, which is convenient for fixing the circuit breaker body 7 .

[0030] The inner cavity of the screw sleeve 104 is slidably connected with a moving plate 109, the outer surface of the moving plate 109 is fixedly connected with a fixing plate 108, the back surface of the fixing plate 108 is fixedly connected with a pulling plate 107, and the back surface of the screw rod 101 is fixedly connected with a first ratchet 105;

[0031] By providing the movable plate 109 , the first ratchet wheel 105 is in a horizontal moving state, which facilitates the positioning of the screw rod 101 .

[0032] The back surface of the movable plate 109 is fixedly connected with a slide bar 111, the inner cavity of the spiral sleeve 104 is fixedly connected with a limiting ring 110, a spring 112 is movably sleeved on the surface of the slide bar 111, the rear side of the spring 112 is fixedly connected with the front side of the limiting ring 110, the front side of the spring 112 is fixedly connected with the rear side of the movable plate 109, the front surface of the pull plate 107 is fixedly connected with the back surface of the slide bar 111, the front surface of the slide bar 111 is fixedly connected with a second ratchet 106, and the front surface of the second ratchet 106 is meshed with the back surface of the first ratchet 105;

[0033] The spring 112 is provided to push the second ratchet 106 to reset, so that the first ratchet 105 and the second ratchet 106 are in a meshing state. At this time, when the equipment vibrates, the screw 101 cannot rotate due to the limitation of the second ratchet 106, thereby avoiding the screw 101 from rotating and causing the screw 101 to loosen, thereby reducing the potential safety hazards of the circuit breaker body 7.

[0034] The inner cavity of the limiting ring 110 is slidably connected to the surface of the sliding rod 111 .

[0035] The inner cavity of the protection frame 3 is provided with a circuit breaker body 7;

[0036] Through the circuit breaker body 7, when a short circuit occurs, the magnetic field generated by the large current overcomes the reaction spring, the release pulls the operating mechanism to operate, and the switch trips instantly. When overloaded, the current becomes larger, the heat generation increases, and the bimetallic strip deforms to a certain extent to push the mechanism to operate, thereby protecting the equipment and preventing further damage to the equipment.

[0037] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] During operation, when the first connecting plate 2 is installed, the holes on the second connecting plate 102 and the third connecting plate 103 are aligned, the screw 101 is pre-inserted into the screw sleeve 104, and the pull plate 107 is pulled backward to make the sliding bar 111 slide backward. At this time, the first ratchet 105 and the second ratchet 106 are not in a meshing state, and the screw 101 can rotate normally. The screw 101 is rotated forward to fix the first connecting plate 2, the protection frame 3 and the circuit breaker body 7 on the fixed frame 6 to complete the installation of the circuit breaker body 7. After installation, the pull plate 107 is released, and the spring 112 pushes the second ratchet 106 to reset, so that the first ratchet 105 and the second ratchet 106 are in a meshing state. At this time, when the equipment vibrates, the screw 101 cannot rotate due to the limitation of the second ratchet 106, thereby avoiding the screw 101 from rotating, causing the screw 101 to loosen, thereby reducing the potential safety hazards of the circuit breaker body 7.

Claims

1. A circuit breaker protection structure, comprising a fixed frame (6), characterized in that: The inner cavity of the fixed frame (6) is movably provided with a fixing mechanism (1), the number of the fixing mechanisms (1) is four groups, the front surface of the fixed frame (6) is movably connected with a first connecting plate (2), the front surface of the first connecting plate (2) is fixedly connected with a protective frame (3), the left side of the protective frame (3) is fixedly provided with a hinge (5), and the right side of the hinge (5) is fixedly provided with a box door (4); The fixing mechanism (1) comprises a second connecting plate (102), one end of the second connecting plate (102) is fixedly connected to one end of the first connecting plate (2), the inner cavity of the second connecting plate (102) is slidably connected to a screw rod (101), the back surface of the fixing frame (6) is fixedly connected to a third connecting plate (103), and the back surface of the third connecting plate (103) is fixedly connected to a screw sleeve (104).

2. A circuit breaker protection structure according to claim 1, characterized in that: The inner cavity of the screw sleeve (104) is threadedly connected to the surface of the screw rod (101), and the four sets of fixing mechanisms (1) are respectively located at the top and bottom of the left and right side surfaces of the first connecting plate (2).

3. A circuit breaker protection structure according to claim 1, characterized in that: The inner cavity of the screw sleeve (104) is slidably connected to a movable plate (109), the outer surface of the movable plate (109) is fixedly connected to a fixed plate (108), the back surface of the fixed plate (108) is fixedly connected to a pulling plate (107), and the back surface of the screw rod (101) is fixedly connected to a first ratchet (105).

4. A circuit breaker protection structure according to claim 3, characterized in that: The back surface of the movable plate (109) is fixedly connected to a sliding rod (111), the inner cavity of the spiral sleeve (104) is fixedly connected to a limiting ring (110), the surface of the sliding rod (111) is movably sleeved with a spring (112), the rear side of the spring (112) is fixedly connected to the front side of the limiting ring (110), the front side of the spring (112) is fixedly connected to the rear side of the movable plate (109), the front surface of the pulling plate (107) is fixedly connected to the back surface of the sliding rod (111), the front surface of the sliding rod (111) is fixedly connected to a second ratchet (106), and the front surface of the second ratchet (106) is meshed with the back surface of the first ratchet (105).

5. A circuit breaker protection structure according to claim 4, characterized in that: The inner cavity of the limiting ring (110) is slidably connected to the surface of the sliding rod (111).

6. A circuit breaker protection structure according to claim 1, characterized in that: A circuit breaker body (7) is movably provided in the inner cavity of the protection frame (3).

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