A primary and secondary fusion pole-mounted circuit breaker that is easy to install

Abstract

The present invention relates to the technical field of pole-mounted circuit breakers, and discloses a conveniently installed primary and secondary fusion pole-mounted circuit breaker, the circuit breaker comprises a circuit breaker body and a control box, a support foot is arranged at the bottom of the control box, a quick mounting seat is arranged on the load-bearing beam, and the quick mounting seat comprises: a mounting seat body; a supporting device, comprising front and rear rollers located above the mounting seat body, two lifting support plates are rotatably connected at both ends of the front and rear rollers, a locking structure and a reset structure are arranged on the support plate, and the rolling direction of the front and rear rollers is perpendicular to the direction of the load-bearing beam; left and right rollers, the bottom of the mounting seat body is provided with side baffles on both sides of the load-bearing beam, and the side baffles are provided with rotatably connected left and right rollers, and the rolling direction of the left and right rollers is parallel to the direction of the load-bearing beam. The conveniently installed primary and secondary fusion pole-mounted circuit breaker has the advantages of convenient installation, quick adjustment of the installation position and high installation stability.

Description

Technical Field

[0001] The invention relates to the technical field of pole-mounted circuit breakers, and in particular to a primary-secondary fusion pole-mounted circuit breaker that is easy to install. Background Art

[0002] Pole-mounted circuit breakers play a vital role in the power distribution network. They can effectively control and protect the lines of the distribution network to ensure the reliability and safety of power supply. With the development of smart grids, primary and secondary integrated pole-mounted circuit breakers have gradually become key equipment in distribution networks. They integrate traditional primary equipment (such as circuit breakers) and secondary equipment (such as protection, measurement, control units, etc.) to achieve more accurate monitoring and control of distribution networks.

[0003] However, there are some inconveniences in the installation process of the existing primary and secondary fusion column-mounted circuit breaker. On the one hand, the primary and secondary fusion column-mounted circuit breaker is large in size and heavy in weight. It needs a crane to assist in lifting it when installing it on the load-bearing beam, which is inconvenient to install; on the other hand, after lifting the primary and secondary fusion column-mounted circuit breaker, it is inconvenient to move it when adjusting the installation position on the load-bearing beam, and because it is a high-altitude operation, the risk factor is high; finally, the secondary equipment (control box) of the primary and secondary fusion column-mounted circuit breaker has high requirements for stability. In the prior art, the control box is installed on the load-bearing beam through the legs on both sides of the control box. This installation method makes the middle part of the control box suspended in the air, which easily leads to the problem of fatigue of the legs and bending of the middle bottom. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a primary-secondary fusion pole-mounted circuit breaker that is easy to install, which has the advantages of easy installation, quick adjustment of the installation position and high installation stability. It solves the problems in the prior art such as the need for a crane to assist in lifting, resulting in inconvenient installation, inconvenient and unsafe movement when adjusting the installation position on the load-bearing beam, and stability of the control box.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A primary and secondary fusion column mounted circuit breaker with convenient installation, comprising a circuit breaker, the circuit breaker comprising a circuit breaker body and a control box, the bottom two sides of the control box are fixed on two parallel load-bearing beams by means of supporting feet, each load-bearing beam is also provided with at least two quick mounting seats, the quick mounting seats comprising:

[0009] The mounting seat body is located above the load-bearing beam;

[0010] The supporting device comprises front and rear rollers located above the mounting seat body, the two ends of the front and rear rollers are rotatably connected to two supporting plates, the bottom of the supporting plate is slidably connected in the mounting seat body, the supporting plate is provided with a locking structure and a reset structure, and the rolling direction of the front and rear rollers is perpendicular to the direction of the load-bearing beam;

[0011] Left and right rollers, the bottom of the mounting seat body is provided with side baffles on both sides of the load-bearing beam, and the left and right rollers connected in rotation are installed in the side baffles. The left and right rollers roll in the load-bearing beam, and the rolling direction of the left and right rollers is parallel to the direction of the load-bearing beam;

[0012] During installation, the supporting device acts as a pulley to lift the circuit breaker. When the circuit breaker is installed on the load-bearing beam, the middle bottom of the control box fits on each supporting device. The front and rear rollers are used to adjust the position of the circuit breaker in the front and rear directions, and the left and right rollers are used to adjust the position of the circuit breaker in the left and right directions. After being in place, the supporting device descends to make the support legs fit on the load-bearing beam for fixation. At the same time, the reset structure on the support plate provides an upward supporting force for the middle bottom of the control box.

[0013] Preferably, the support device is provided with a conductive contact on the surface in contact with the control box housing, and the contact surface between the bottom of the mounting seat body and the load-bearing beam is provided with a conductive contact. A power supply and a current sensor are provided in the mounting seat body, and the positive and negative poles of the power supply output terminals are respectively connected to the support device and the conductive contacts on the mounting seat body. The current sensor is used to detect the current in the positive and negative wires. When the current sensor detects the current loop, the locking structure on the support plate is controlled to release the lock of the support plate, thereby lowering the support device.

[0014] Preferably, the locking structure on the support plate is a positioning hole arranged on the support plate, and the mounting seat body is provided with electromagnetic seats corresponding to the number of support plates, and each electromagnetic seat is provided with an electromagnetic push rod, and each electromagnetic push rod is located at the position of the corresponding positioning hole. Each electromagnetic seat is connected to a power supply, and when the current sensor detects the current, the electromagnetic push rod is controlled to retract into the electromagnetic seat to release the lock of the support plate.

[0015] Preferably, the front and rear rollers include an inner roller and an outer roller, the two ends of the inner roller are rotatably connected to the support plate, the outer roller is sleeved on the inner roller and slides, left and right return springs are respectively arranged between the ends of the two sections of the outer roller and the support plate, the middle part of the inner roller is provided with a boss protruding outward, the two ends of the boss are arranged as inclined surfaces, and the upper circumference of the outer roller is provided with a plurality of slidably connected conductive top blocks, when the outer roller is located in the middle position of the inner roller, the left and right return springs at the two ends are in a balanced state and the conductive top block is located in the middle position of the boss, at this time the distance that the conductive top block protrudes outward is the limit distance, when the outer roller slides in any direction, the inner side of the conductive top block contacts the inclined surface of the boss or the surface of the inner roller, thereby causing the conductive top block to retract inward, avoiding wear of the conductive top block when the circuit breaker is pushed to move along the load-bearing beam.

[0016] Preferably, the inner width of each conductive top block near the inner roller is greater than the outer width, and the through hole on the outer roller for sliding the conductive top block is provided with a closing position near the outer side, so that when the conductive top block slides outward to the farthest position, the wider inner part is against the closing position, thereby playing a role in limiting the conductive top block.

[0017] Preferably, the support plate includes a reset structure consisting of a pressure plate and a lifting reset spring. A pressure plate is arranged on the side of the support plate. A lifting reset spring is connected to the bottom of the pressure plate. The pressure plate and the lifting reset spring slide up and down in a pressure groove corresponding to the mounting seat body. A through hole is opened on the side of the pressure groove for passing the electromagnetic push rod.

[0018] Preferably, the bottom surface of the control box is provided with grooves at positions corresponding to each outer roller, which are used to locate the position of each quick mounting seat and prevent the quick mounting seat from shifting. When the outer roller is stuck in the groove, the top of the support plate contacts the control box housing. The support plate is made of conductive material and is connected to the conductive top block.

[0019] Preferably, the outer drum is provided with two rows of symmetrical conductive top blocks, and the inner drum is also provided with two symmetrical bosses. When the outer drum is located in the middle position of the inner drum, the two rows of conductive top blocks correspond to the two bosses one by one, so that under normal conditions, the two conductive top blocks protrude outward, thereby fixing the cable from both sides.

[0020] Preferably, the mounting seat main body shell is made of stainless steel alloy, and an insulating coating or insulating film is provided on the outside of the mounting seat main body shell. The insulating coating is one of a ceramic coating, an organic coating, an oxide film coating or a polytetrafluoroethylene coating, and the insulating film is a rubber film or an inorganic insulating film.

[0021] Preferably, a hook ring is provided above the control box housing, and a handle is provided on the side of the control box housing.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a primary and secondary fusion pole-mounted circuit breaker that is easy to install and has the following beneficial effects:

[0024] 1. The conveniently installed primary and secondary fusion column mounted circuit breaker has a plurality of quick mounting seats arranged on the load-bearing beam, and two front and rear rollers and left and right rollers whose rolling directions are perpendicular to each other are arranged on the quick mounting seats, which are respectively used to adjust the position of the circuit breaker on the load-bearing beam in the front and rear directions and left and right directions. At the same time, the front and rear rollers can also be used as pulleys for lifting the circuit breaker from the ground, thus saving the tools required for installation. Moreover, the support plates used for supporting the front and rear rollers are arranged to be liftable, and a locking structure and a reset structure are arranged on the support plates. After the circuit breaker is in place, the locking structure is controlled to release the lock of the support plate, thereby lowering the circuit breaker onto the load-bearing beam, and at the same time, the reset structure lifts the support plate upward, thereby supporting the bottom of the control box and improving the stability of the control box.

[0025] 2. The conveniently installed primary and secondary fusion column mounted circuit breaker has conductive contacts on both the support device and the mounting base body, a power supply and a current sensor are arranged in the mounting base body, the positive and negative poles of the power supply output terminals are respectively connected with the conductive contacts on the support device and the mounting base body, and after the circuit breaker is in place, the control box and the load-bearing beam are connected by bolts, so that when the current sensor detects a current loop, the locking structure on the support plate is controlled to release the lock of the support plate, so that the support device is lowered, and after the circuit breaker is in place, only the bolts need to be inserted to automatically lower the circuit breaker to the load-bearing beam, thereby saving installation steps.

[0026] 3. The easy-to-install primary and secondary fusion column-mounted circuit breaker is configured by setting the front and rear rollers as an inner drum and an outer drum wrapped inside and outside, the outer drum is slidably connected to the outside of the inner drum, a boss is arranged in the middle of the inner drum, a conductive top block is arranged on the circumference of the outer drum, and the outer drum is located in the middle of the inner drum under the action of a spring. When the circuit breaker moves along the load-bearing beam, the outer drum is driven to move by the control box, so that the outer drum and the inner drum move relative to each other, so that the conductive top block deviates from the boss, and the conductive top block retracts inward when subjected to force, thereby avoiding wear of the conductive top block when the circuit breaker is moved.

[0027] 4. The primary and secondary fusion column mounted circuit breaker which is easy to install has two rows of conductive top blocks and bosses, so that the conductive top blocks also play the role of fixing the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the circuit breaker body and the control box of the present invention.

[0030] Figure 3 It is a structural schematic diagram of the load-bearing beam and the quick mounting seat of the present invention.

[0031] Figure 4 It is a structural schematic diagram of the quick mounting seat of the present invention.

[0032] Figure 5 It is an exploded view of the quick mounting seat of the present invention.

[0033] Figure 6 It is a schematic diagram of the structure inside the main body of the mounting seat of the present invention.

[0034] Figure 7 It is a schematic structural diagram of the supporting device of the present invention.

[0035] Figure 8 It is a cross-sectional view of the supporting device of the present invention.

[0036] Fig. 9 This is a front view of the present invention when the supporting device supports the circuit breaker.

[0037] Fig.10 This is a front view of the circuit breaker of the present invention installed on a load-bearing beam.

[0038] In the figure: 1. circuit breaker; 11. circuit breaker body; 12. control box; 121. support foot; 122. hook ring; 123. handle; 124. groove; 2. load-bearing beam; 3. quick mounting seat; 31. mounting seat body; 32. side baffle; 33. left and right rollers; 34. supporting device; 35. electromagnetic seat; 351. electromagnetic push rod; 311. pressing groove; 41. front and rear rollers; 42. supporting plate; 43. pressing plate; 44. lifting and resetting spring; 422. positioning hole; 411. inner roller; 412. outer roller; 413. left and right resetting springs; 414. conductive top block; 4111. boss. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, a fixed connection refers to a connection in which there is no relative movement after the parts or components are fixed; a transmission connection refers to a connection method in which mechanical motion or torque is transmitted to other working parts through a transmission part; a sliding connection refers to a connection method in which two objects are in contact but not fixed and can slide relative to each other; a rotating connection refers to a connection method in which two objects are in contact but not fixed and can rotate relative to each other.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] Embodiment 1:

[0044] This embodiment provides a primary-secondary fusion pole-mounted circuit breaker that is easy to install and has the following technical features.

[0045] See also Figure 1-10 A primary and secondary fusion column mounted circuit breaker with convenient installation includes a circuit breaker 1, the circuit breaker 1 includes a circuit breaker body 11 and a control box 12, the bottom sides of the control box 12 are fixed on two parallel load-bearing beams 2 by setting legs 121, and each load-bearing beam 2 is also provided with two quick mounting seats 3, and the quick mounting seats 3 include:

[0046] The mounting seat body 31 is located above the load-bearing beam 2;

[0047] Two symmetrical support devices 34, including front and rear rollers 41 located above the mounting seat body 31, each of the front and rear rollers 41 is rotatably connected to two support plates 42 at both ends, the bottom of the support plate 42 is slidably connected in the mounting seat body 31, and a locking structure and a reset structure are provided on the support plate 42, and the rolling direction of the front and rear rollers 41 is perpendicular to the direction of the load-bearing beam 2;

[0048] The left and right rollers 33 and the bottom of the mounting seat body 31 are provided with side baffles 32 on both sides of the load-bearing beam 2, and the left and right rollers 33 rotatably connected are installed in the side baffles 32. The left and right rollers 33 roll in the load-bearing beam 2, and the rolling direction of the left and right rollers 33 is parallel to the direction of the load-bearing beam 2.

[0049] It should be noted that the supporting device 34 acts as a pulley to lift the circuit breaker 1. When the circuit breaker 1 is installed on the load-bearing beam 2, the middle bottom of the control box 12 is attached to each supporting device 34. The front and rear rollers 41 are used to adjust the position of the circuit breaker 1 in the front and rear directions, and the left and right rollers 33 are used to adjust the position of the circuit breaker 1 in the left and right directions. After being in place, the supporting device 34 descends to make the support leg 121 attached to the load-bearing beam 2 for fixation. At the same time, the reset structure on the support plate 42 provides an upward supporting force for the middle bottom of the control box 12.

[0050] It is further provided that the support device 34 is provided with a conductive contact on the surface in contact with the shell of the control box 12, and the contact surface between the bottom of the mounting seat body 31 and the load-bearing beam 2 is provided with a conductive contact, and a power supply and a current sensor are provided in the mounting seat body 31, and the positive and negative poles of the power supply output terminal are respectively connected with the support device 34 and the conductive contacts on the mounting seat body 31, and the current sensor is used to detect the current in the positive and negative wires, and when the current sensor detects the current loop, the locking structure on the support plate 42 is controlled to release the lock of the support plate 42, thereby lowering the support device 34.

[0051] It is further provided that the locking structure on the support plate 42 is a positioning hole 422 arranged on the support plate 42, and the mounting seat body 31 is provided with electromagnetic seats 35 corresponding to the number of the support plates 42, and each electromagnetic seat 35 is provided with an electromagnetic push rod 351, and each electromagnetic push rod 351 is located at a position corresponding to the positioning hole 422, and each electromagnetic seat 35 is connected to a power supply. When the current sensor detects the current, the electromagnetic push rod 351 is controlled to retract into the electromagnetic seat 35, thereby releasing the lock on the support plate 42.

[0052] Further, the front and rear rollers 41 include an inner roller 411 and an outer roller 412, the inner roller 411 is rotatably connected to the support plate 42 at both ends, the outer roller 412 is sleeved on the inner roller 411 and slides, left and right return springs 413 are respectively arranged between the two ends of the outer roller 412 and the support plate 42, the middle part of the inner roller 411 is provided with a boss 4111 protruding outward, the two ends of the boss 4111 are arranged with inclined surfaces, at least four conductive top blocks 414 connected in sliding connection are arranged on the circumference of the outer roller 412, and the outer roller 412 is provided with a plurality of conductive top blocks 414 connected in sliding connection. When the cylinder 412 is located in the middle position of the inner cylinder 411, the left and right return springs 413 at both ends are in a balanced state and the conductive top block 414 is located in the middle position of the boss 4111. At this time, the outward protrusion distance of the conductive top block 414 is the limit distance. When the outer cylinder 412 slides in either direction, the inner side of the conductive top block 414 contacts the inclined surface of the boss 4111 or the surface of the inner cylinder 411, so that the conductive top block 414 retracts inward, avoiding wear of the conductive top block 414 when the circuit breaker 1 is pushed to move along the load-bearing beam 2.

[0053] It should be noted that a cavity is provided inside the outer drum 412 in the space corresponding to the sliding of the boss 4111 .

[0054] It is further provided that the inner width of each conductive top block 414 near the inner roller 411 is greater than the outer width, and the through hole on the outer roller 412 for sliding the conductive top block 414 is provided with a closing position near the outer side, so that when the conductive top block 414 slides outward to the farthest position, the wider inner part is against the closing position, thereby playing a role in limiting the conductive top block 414.

[0055] It is further provided that the support plate 42 includes a reset structure consisting of a pressure plate 43 and a lifting reset spring 44. A pressure plate 43 is provided on the side of the support plate 42, and a lifting reset spring 44 is connected to the bottom of the pressure plate 43. The pressure plate 43 and the lifting reset spring 44 slide up and down in the pressure groove 311 corresponding to the mounting seat body 31, and a through hole is opened on the side of the pressure groove 311 for passing the electromagnetic push rod 351.

[0056] It is further provided that grooves 124 are provided on the bottom surface of the control box 12 at positions corresponding to the outer rollers 412, for locating the positions of the quick mounting seats 3 and preventing the quick mounting seats 3 from shifting. When the outer rollers 412 are stuck in the grooves 124, the top of the support plate 42 contacts the housing of the control box 12. The support plate 42 is made of conductive material and is connected to the conductive top block 414.

[0057] It is further provided that two rows of symmetrical conductive top blocks 414 are provided on the outer drum 412, and two symmetrical bosses 4111 are also provided on the inner drum 411. When the outer drum 412 is located in the middle position of the inner drum 411, the two rows of conductive top blocks 414 correspond one-to-one to the two bosses 4111, so that under normal conditions, the two conductive top blocks 414 protrude outward, thereby fixing the cable from both sides.

[0058] It is further provided that the shell material of the mounting seat body 31 is a stainless steel alloy, and an insulating coating or insulating film is provided on the outer side of the shell of the mounting seat body 31, the insulating coating is one of a ceramic coating, an organic coating, an oxide film coating or a polytetrafluoroethylene coating, and the insulating film is a rubber film or an inorganic insulating film.

[0059] It should be noted that the conductive top block 414, the left and right return springs 413 and the support plate 42 are made of copper alloy, the outer drum 412 is made of hard rubber, and the conductive top block 414, the left and right return springs 413 and the support plate 42 are electrically connected to each other.

[0060] Furthermore, a hook ring 122 is provided on the upper part of the control box 12 shell for fixing the cable, and a handle 123 is provided on the side of the control box 12 shell for lifting the control box 12 during installation and disassembly.

[0061] Furthermore, an annular groove is provided on the outer drum 412 to prevent the cable from deflecting when the conductive top block 414 slides down.

[0062] The support plate 42 is configured as a bent support plate inclined outwardly to prevent the cables of the front and rear rollers 41 from contacting the load-bearing beam 2 when the front and rear rollers 41 are used as pulleys.

[0063] Working principle: Each electromagnetic seat 35 is connected and controlled together. During installation, the power switch in each quick mounting seat 3 is manually turned on. When the current sensor detects the current, that is, when the support leg 121 is connected to the load-bearing beam 2 through the bolt, the current circuit is the power supply, the conductive contacts on the support device 34, the control box 12 shell, the support leg 121, the bolt, the load-bearing beam 2, the conductive contacts on the mounting seat body 31, and finally returns to the power supply. The electromagnetic push rod 351 is controlled to retract into the electromagnetic seat 35 to release the lock on the support plate 42, so that the support leg 121 drops onto the load-bearing beam 2, so that after the positioning of the circuit breaker 1 is completed, the support device 34 automatically drops and automatically closes after a period of time. The power switch of the quick mounting base 3 can be manually turned on again when disassembly is required, the bolts on the support leg 121 can be removed, and the circuit breaker 1 can be lifted up as a whole. At this time, the support leg 121 is separated from the load-bearing beam 2, and the current sensor detects that the current disappears, thereby controlling the electromagnetic base 35 to retract the electromagnetic push rod 351 outward, so that the electromagnetic push rod 351 is pressed against the support plate 42. During the rising process of the circuit breaker 1, the support plate 42 rises under the rebound action of the lifting and reset spring 44. When the support plate 42 rises to align the electromagnetic push rod 351 with the positioning hole 422, the electromagnetic push rod 351 is stuck in the positioning hole 422 to complete the locking of the support plate 42, thereby facilitating the next installation.

[0064] In summary, the conveniently installed primary and secondary fusion column-mounted circuit breaker is provided with a plurality of quick mounting seats 3 on the load-bearing beam 2, and two front and rear rollers 41 and left and right rollers 33 whose rolling directions are perpendicular to each other are provided on the quick mounting seats 3, which are respectively used to adjust the position of the circuit breaker 1 in the front and rear directions and left and right directions on the load-bearing beam 2. At the same time, the front and rear rollers 41 can also be used as pulleys for lifting the circuit breaker 1 from the ground, saving the tools required for installation, and the support plate 42 used for support on the front and rear rollers 41 is arranged to be liftable, and a locking structure and a reset structure are arranged on the support plate 42. After the circuit breaker 1 is in place, the locking structure is controlled to release the lock of the support plate 42, so that the circuit breaker 1 is lowered onto the load-bearing beam 2, and at the same time, the reset structure makes the support plate 42 push up, which supports the bottom of the control box 12 and improves the stability of the control box 12.

[0065] The easy-to-install primary and secondary fusion column-mounted circuit breaker has conductive contacts on both the support device 34 and the mounting base body 31, and a power supply and a current sensor are arranged in the mounting base body 31. The positive and negative poles of the power supply output terminals are respectively connected with the conductive contacts on the support device 34 and the mounting base body 31. After the circuit breaker 1 is in place, bolts are used to connect the control box 12 and the load-bearing beam 2, so that when the current sensor detects a current loop, the locking structure on the support plate 42 is controlled to release the lock of the support plate 42, so that the support device 34 is lowered. After the circuit breaker 1 is in place, only the bolts need to be inserted to automatically lower the circuit breaker 1 onto the load-bearing beam 2, thereby saving installation steps.

[0066] The easy-to-install primary and secondary fusion column-mounted circuit breaker is configured by arranging the front and rear rollers 41 as an inner drum 411 and an outer drum 412 wrapped inside and outside, the outer drum 412 is slidably connected to the outside of the inner drum 411, a boss 4111 is arranged in the middle of the inner drum 411, a conductive top block 414 is arranged on the circumference of the outer drum 412, and the outer drum 412 is located in the middle of the inner drum 411 under the action of a spring. When the circuit breaker 1 moves along the load-bearing beam 2, the outer drum 412 is driven to move by the control box 12, so that the outer drum 412 and the inner drum 411 produce relative movement, so that the conductive top block 414 deviates from the boss 411, and the conductive top block 414 retracts inward when subjected to force, thereby avoiding wear of the conductive top block 414 when the circuit breaker 1 is moved.

[0067] The primary and secondary fusion column mounted circuit breaker which is easy to install is provided with two rows of conductive top blocks 414 and bosses 4111, so that the conductive top blocks 414 also play the role of fixing the cable.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A primary-secondary fusion pole-mounted circuit breaker that is easy to install, comprising a circuit breaker (1), wherein the circuit breaker (1) comprises a circuit breaker The device comprises a main body (11) and a control box (12), wherein two sides of the bottom of the control box (12) are mounted and fixed on two parallel load-bearing beams (2) by means of supporting feet (121), and the device is characterized in that: At least two quick installation seats (3) are also provided on each load-bearing beam (2), and the quick installation seats (3) include: A mounting seat body (31) located above the load-bearing beam (2); The support device (34) comprises front and rear rollers (41) located above the mounting seat body (31), two ends of the front and rear rollers (41) being rotatably connected to two support plates (42), the bottom of the support plate (42) being slidably connected in the mounting seat body (31), a locking structure and a reset structure being provided on the support plate (42), and the rolling direction of the front and rear rollers (41) being perpendicular to the direction of the load-bearing beam (2); Left and right rollers (33), the bottom of the mounting seat body (31) is provided with side baffles (32) on both sides of the load-bearing beam (2), the side baffles (32) are provided with rotatably connected left and right rollers (33), the left and right rollers (33) roll in the load-bearing beam (2), and the rolling direction of the left and right rollers (33) is parallel to the direction of the load-bearing beam (2); The support device (34) is provided with a conductive contact on a surface in contact with the housing of the control box (12); the bottom of the mounting seat body (31) is provided with a conductive contact on a contact surface with the load-bearing beam (2); a power supply and a current sensor are provided in the mounting seat body (31); the positive and negative poles of the power supply output terminal are respectively connected to the conductive contacts on the support device (34) and the mounting seat body (31); the current sensor is used to detect the current in the positive and negative poles of the wires; when the current sensor detects a current loop, the locking structure on the support plate (42) is controlled to contact and lock the support plate (42), thereby causing the support device (34) to descend; The locking structure on the support plate (42) is a positioning hole (422) provided on the support plate (42); the mounting seat body (31) is provided with electromagnetic seats (35) corresponding to the number of the support plates (42); each electromagnetic seat (35) is provided with an electromagnetic push rod (351); each electromagnetic push rod (351) is located at a position corresponding to the positioning hole (422); each electromagnetic seat (35) is connected to a power supply; when the current sensor detects current, the electromagnetic push rod (351) is controlled to retract into the electromagnetic seat (35) so as to release the lock on the support plate (42).

2. A primary and secondary fusion column mounted circuit breaker that is easy to install according to claim 1, characterized in that: The front and rear rollers (41) comprise an inner roller (411) and an outer roller (412), and both ends of the inner roller (411) are rotatably connected to a support plate. (42), the outer roller (412) is sleeved on the inner roller (411) and slides, and the two ends of the outer roller (412) are connected to the support plate Left and right return springs (413) are respectively arranged between the inner roller (42), a boss (4111) protruding outward is arranged in the middle part of the inner roller (411), both ends of the boss (4111) are arranged as inclined surfaces, and a plurality of conductive top blocks (414) in sliding connection are arranged on the circumference of the outer roller (412); When the outer roller (412) is located at the middle position of the inner roller (411), the left and right return springs (413) at both ends are in a balanced state and the conductive top block (414) is located at the middle position of the boss (4111). At this time, the distance that the conductive top block (414) protrudes outward is the limit distance. When the outer roller (412) slides in any direction, the inner side of the conductive top block (414) contacts the inclined surface of the boss (4111) or the surface of the inner roller (411), so that the conductive top block (414) retracts inward, thereby avoiding wear of the conductive top block (414) when the circuit breaker (1) is pushed to move along the load-bearing beam (2).

3. A primary and secondary fusion column mounted circuit breaker that is easy to install according to claim 2, characterized in that: The inner width of each conductive top block (414) close to the inner roller (411) is greater than the outer width, and a through hole on the outer roller (412) for sliding the conductive top block (414) is provided with a closing opening at a position close to the outer side, so that when the conductive top block (414) slides outward to the farthest position, the wider inner portion is pressed against the closing opening position, thereby playing a role in limiting the conductive top block (414).

4. The primary and secondary fusion column mounted circuit breaker with convenient installation according to claim 1 is characterized in that: The support plate (42) includes a reset structure consisting of a pressure plate (43) and a lifting reset spring (44). The side of the support plate (42) is provided with A pressing plate (43) is provided, and a lifting and reset spring (44) is connected to the bottom of the pressing plate (43). The pressing plate (43) and the lifting and reset spring (44) slide up and down in a pressing groove (311) corresponding to the mounting seat body (31). A through hole for passing an electromagnetic push rod (351) is provided on a side of the pressing groove (311).

5. The primary and secondary fusion pole mounted circuit breaker with convenient installation according to claim 2, characterized in that: The bottom surface of the control box (12) is provided with grooves (124) at positions corresponding to the outer rollers (412) for locating the positions of the quick mounting seats (3) and preventing the quick mounting seats (3) from shifting. When the outer rollers (412) are stuck in the grooves (124), the top of the support plate (42) contacts the housing of the control box (12). The support plate (42) is made of a conductive material and is in electrical contact with the conductive top block (414).

6. The primary and secondary fusion column mounted circuit breaker with convenient installation according to claim 2, characterized in that: The outer drum (412) is provided with two rows of symmetrical conductive top blocks (414), and the inner drum (411) is also provided with two symmetrical bosses. (4111), when the outer roller (412) is located in the middle of the inner roller (411), the two rows of conductive top blocks (414) and the two bosses (4111) correspond one to one, so that under normal conditions, the two conductive top blocks (414) protrude outwards, playing the role of fixing the cable from both sides.

7. The primary and secondary fusion pole mounted circuit breaker with convenient installation according to claim 2, characterized in that: The shell material of the mounting seat body (31) is a stainless steel alloy, and an insulating coating or an insulating film is provided on the outer side of the shell of the mounting seat body (31), the insulating coating is one of a ceramic coating, an organic coating, an oxide film coating or a polytetrafluoroethylene coating, and the insulating film is a rubber film or an inorganic insulating film.

8. The primary and secondary fusion pole mounted circuit breaker with convenient installation according to claim 1, characterized in that: A hook ring (122) is provided above the shell of the control box (12), and a handle (123) is provided on the side of the shell of the control box (12).

Images