Contactor assembly of electrical cabinet

Abstract

The utility model discloses an electrical cabinet contactor assembly, which relates to the technical field of electrical cabinet contactor assemblies, and comprises a shell, a resistance box is arranged on one side of the shell, a buffer mechanism is arranged between the shell and an iron core support, an electromagnetic mechanism is arranged in the shell, the electromagnetic mechanism is connected with the resistance box in series, and the resistance box is arranged in the shell. An iron core support is arranged above the electromagnetic mechanism, a moving contact set is fixedly installed on the iron core support, an upper contact opening set and a lower contact opening set are further fixedly installed on the shell, an interval resistance block is arranged on an upper contact opening, a magnetic contact block is fixedly installed on the interval resistance block, and when the gear of the resistance box is the first gear, the magnetic contact block is fixedly installed on the interval resistance block. When the gear of the resistance box is the first gear, the moving contact is driven by the iron core support to move so as to be tangent to the interval resistance block, then the moving contact makes contact with the magnetic contact block to communicate with the first circuit, and when the gear of the resistance box is the second gear, the moving contact crosses the interval resistance block to move to the maximum distance to make contact with the lower contact port set to communicate with the second circuit.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical cabinet contactor assembly, specifically is a kind of electrical cabinet contactor assembly. BACKGROUND

[0002] Electrical cabinet contactor assembly is a widely used electrical cabinet switchgear assembly, which uses electromagnetic, pneumatic or hydraulic principle to realize the on-off of main circuit through control circuit.Electrical cabinet contactor assembly has the advantages of strong breaking current, rapid action, safe operation, frequent operation and remote control.The main control object of contactor is motor, and it can also control other power loads, such as welding machine and electric furnace.

[0003] With the continuous development of electrical cabinet technology, higher requirements are put forward for electrical cabinet power distribution, components and electrical cabinet installation space, etc., and multiple contactor assemblies are often equipped inside the electrical cabinet to control the on-off of different main circuits, but the space inside the electrical cabinet is limited, and multiple contactors occupy more space, so the line is more complex, in order to meet the requirement that a single contactor assembly can control two main circuits, we propose an electrical cabinet contactor assembly. SUMMARY

[0004] The utility model aims at providing an electrical cabinet contactor assembly to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electrical cabinet contactor assembly, comprising a shell installed in an electrical cabinet, an electromagnetic mechanism is installed inside the shell, an iron core support is arranged above the electromagnetic mechanism, a conductive rod group is fixedly installed on the iron core support, a movable contact group is slidably connected to both ends of the conductive rod, a movable contact spring group is fixedly connected between the inner wall of the movable contact group and the conductive rod, an upper contact port group and a lower contact port group are also fixedly installed on the shell, a resistance block is fixedly installed on the upper contact port, a conductive sleeve is fixedly installed on the resistance block, a magnetic contact block is slidably connected to the inner wall of the conductive sleeve, the conductive sleeve is rotatably connected to a conductive connecting rod, the conductive connecting rod is rotatably connected to the upper contact port, multiple movable contact groups can be contacted with magnetic contact block group to connect circuit one, and multiple movable contact groups can be contacted with lower contact port group to connect circuit two.

[0006] Preferably, a magnetic touch spring is fixedly connected between the magnetic touch block and the inner wall of the conductive sleeve, which provides a pushing force for the reset of the magnetic touch block.

[0007] Preferably, a pulley mechanism and a fixed frame are rotatably connected to one end of the resistance block, the pulley mechanism is in rolling contact with the upper contact port, and the fixed frame is rotatably connected to the upper contact port.

[0008] Preferably, the shell is also provided with a buffer mechanism group, the buffer mechanism is composed of a buffer cylinder and a buffer rod, the buffer cylinder group is fixedly installed in the shell, the buffer rod group is fixedly installed on the iron core support, and the buffer rod is in sliding contact with the inner wall of the buffer cylinder.

[0009] Preferably, the plurality of moving contact groups and the plurality of magnetic contact blocks are provided with magnetic forces opposite in polarity.

[0010] Preferably, one end of the moving contact is a parallel inclined plane, and one end of the interval resistance block is also a parallel inclined plane.

[0011] Preferably, a plurality of air inlet holes are arranged at a quarter of the top of the buffer cylinder, and are used for changing the air pressure intensity in the buffer cylinder.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a magnetic moving contact and an interval resistance block with slidable parallel inclined planes are arranged, under the premise that the passing property of the moving contact is guaranteed, a certain limiting resistance is borne, a double-circuit contact mechanism is also arranged, different circuit switches are controlled under the driving of single direction coil electromagnetic force, the internal space of the electrical cabinet occupied by the contactor is saved, and the circuit of the contactor assembly of the electrical cabinet is also simpler.

[0014] The utility model discloses a magnetic contact block and an insulating interval resistance block connected with sleeve air pressure resistance, realize the motion track invariable condition under the driving of single electromagnetic force, need when circuit two is connected, circuit one is not connected.

[0015] The utility model discloses an interval resistance block with a pulley and a rotatable fixing frame, guarantee the passing property when the moving contact mechanism resets, the interval resistance block has a protruding body structure, guarantees the limiting of the lifting angle of the interval resistance block, guarantees that the interval resistance block can reset.

[0016] The utility model discloses a buffer mechanism, guarantee the speed when the moving contact mechanism resets, do not cause mechanical damage, also set up resistance box, can change the current size through the coil of electromagnetic mechanism. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the whole half cut structure schematic diagram of the utility model;

[0018] Figure 2 It is the local structure schematic diagram of the utility model;

[0019] Figure 3 It is the moving contact mechanism half cut structure schematic diagram of the utility model;

[0020] Figure 4 It is the magnetic contact mechanism half cut structure schematic diagram of the utility model;

[0021] Figure 5 is a schematic view of the resistance mechanism structure of the utility model;

[0022] Figure 6 is a schematic view of the half cut structure of the buffer mechanism of the utility model;

[0023] Figure 7 is a schematic view of the communication structure of the moving contact mechanism and the magnetic contact mechanism of the utility model.

[0024] In the figure: 1 - shell; 2 - electromagnetic mechanism; 3 - iron core support; 41 - moving contact; 42 - conductive rod; 43 - moving contact spring; 5 - upper contact port; 6 - lower contact port; 71 - magnetic contact block; 72 - conductive sleeve; 73 - magnetic touch spring; 74 - conductive connecting rod; 81 - resistance block; 82 - pulley mechanism; 83 - fixed frame; 9 - buffer mechanism; 91 - buffer barrel; 92 - buffer rod; 10 - resistance box. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-7The utility model provides a technical scheme: a kind of electrical cabinet contactor assembly, including the shell 1 being installed on electrical cabinet, electromagnetic mechanism 2 is installed in shell 1 interior, electromagnetic mechanism 2 includes electromagnetic coil, electromagnetic coil provides electromagnetic attraction after energization to the iron core support 3 being provided in upper portion, attract iron core support 3 vertical downward movement, fixedly installed with electrically conductive rod 42 on iron core support 3, both ends of electrically conductive rod 42 are slidably connected with moving contact 41 group, when iron core support 3 drives moving contact 41 group to move downward to interval resistance block 81, the inclined plane of interval resistance block 81 and the inclined plane on moving contact 41 will be tangent limit, moving contact spring 43 is fixedly connected between the inner wall of moving contact 41 and electrically conductive rod 42, moving contact spring 43 provides the thrust of moving contact 41 when resetting, electrically conductive sleeve 72 is fixedly installed on interval resistance block 81, electrically conductive sleeve 72 has small hole in one end, magnet contact block 71 is slidably connected in electrically conductive sleeve 72, moving contact 41 and magnet contact block 71 have opposite magnetic force, when magnet contact block 71 is attracted to move by the magnetic force of moving contact 41, since magnet contact block 71 bottom and the air-tight contact of electrically conductive sleeve 72 inner wall, the air pressure between electrically conductive sleeve 72 and magnet contact block 71 is lower than atmospheric pressure, pressure damping effect is generated, so that magnet contact block 71 movement speed slows down, electrically conductive sleeve 72 is rotatably connected with electrically conductive connecting rod 74, electrically conductive connecting rod 74 is rotatable double connecting rod structure, guarantees the prerequisite of current passing, when magnet mechanism 7 is lifted, can change own structure shape and will not cause opposite resistance, the side wall of upper contact 5 is rotatably connected with electrically conductive connecting rod 74, multiple moving contact 41 groups can be contacted with magnet contact block 71 group to connect circuit one, multiple moving contact 41 groups can be contacted with lower contact 6 group to connect circuit two.

[0027] Referring to Figure 1 , resistance box 10 is provided on the outside of shell 1, resistance box 10 is connected with electromagnetic mechanism 2 by series connection, resistance box 10 can adjust the size of resistance, to control the current size of electromagnetic coil in electromagnetic mechanism 2, resistance box 10 is divided into two gears in total, when resistance box 10 is energized, the resistance provided by the first gear can make iron core support 3 drive moving contact 41 group to move half distance, for controlling the connection of circuit one, the resistance provided by the second gear is almost negligible, can make iron core support 3 drive moving contact 41 group to move to the position of maximum distance, to control the connection of circuit two.

[0028] Referring to Figure 4 , magnet contact spring 73 is fixedly connected between magnet contact block 71 and electrically conductive sleeve 72, when magnet contact block 71 position changes under the magnetic attraction of moving contact 41, magnet contact spring 73 can ensure that magnet contact block 71 resets successfully.

[0029] Referring to Figure 5One end of the blocking block 81 is rotatably connected to a pulley mechanism 82 and a fixed frame 83. The pulley mechanism 82 includes a supporting cross bar and two pulleys. The upper contact port 5 is in rolling contact with the pulley. The pulley reduces the mechanical damage caused by the friction between the blocking block 81 and the upper contact port 5 by its own rolling. The upper contact port 5 is rotatably connected to the fixed frame 83. The fixed frame 83 limits the position of the blocking block 81 to remain unchanged while ensuring that the rotation of the blocking block 81 is not obstructed.

[0030] See Figure 6 A buffer mechanism 9 is also provided in the shell 1. The buffer mechanism 9 consists of a buffer cylinder 91 and a buffer rod 92. The buffer cylinder 91 group is fixedly installed inside the shell 1, and the buffer rod 92 group is fixedly installed on the core bracket 3. The buffer rod 92 is in airtight sliding contact with the inner wall of the buffer cylinder 91. When the core bracket 3 drives the buffer rod 92 to reset, the pressure of the internal space between the buffer cylinder 91 and the buffer rod 92 will be higher than the atmospheric pressure. In the process of gas discharge from the pores, a gradually decreasing buffer force will be given to the core bracket 3 and the moving contact 41 to prevent mechanical damage caused by a fast rebound speed.

[0031] A large air inlet group is provided at the upper quarter of the buffer cylinder 91. When the resistor box 10 is in the second gear, it ensures that after the dynamic contact mechanism 4 moves downward more than a quarter of the position, the pressure of the internal space between the buffer cylinder 91 and the buffer rod 92 quickly returns to the normal atmospheric pressure, thereby returning the movement speed of the dynamic contact 41 to normal, avoiding the dynamic contact 41 from staying near the resistance block 81 for too long due to too slow speed, thereby attracting the magnetic contact block 71 and briefly connecting circuit one.

[0032] See Figure 7 One end of the moving contact 41 and one end of the resistance block 81 are parallel inclined surfaces. When the resistance box 10 is in the first gear, when the core bracket 3 drives the moving contact 41 to move, the position of the moving contact 41 is guaranteed to be limited.

[0033] The material used for the resistance mechanism 8 is an insulating material. When the resistance box 10 is in the second gear, when the core bracket 3 drives the inclined surface of the moving contact 41 to be tangent to the inclined surface of the resistance block 81, circuit one will not be connected. Then, the moving contact 41 will continue to move downward under the drive of the core bracket 3 until it reaches the maximum distance, thereby connecting line two. When the resistance box 10 is powered off, the moving contact 41 contacts the resistance block 81 when it resets from the bottom, which will not connect circuit one, thereby avoiding the situation where line one is connected when line two is connected.

[0034] Working principle: turn on the power of resistance box 10, when the resistance box 10 gear is in the first gear: electromagnetic mechanism 2 attracts iron core support 3, iron core support 3 drives moving contact 41 to move to the position of interval resistance block 81, when the inclined surface of interval resistance block 81 and the inclined surface of moving contact 41 are tangent, the electromagnetic force of electromagnetic mechanism 2 and the supporting force provided by interval resistance block 81 are counteracted, thereby limiting the position of moving contact 41 unchanged, but at this time circuit one will not be connected because interval resistance block 81 is insulating material, then the magnetic force of moving contact 41 attracts magnetic contact block 71 to slide and attract, thereby connecting circuit one, turn off the power, the electromagnetic force provided by electromagnetic mechanism 2 disappears, iron core support 3 drives moving contact 41 group to reset upward under the spring thrust of electromagnetic mechanism 2, magnetic contact block 71 resets under the pulling force of moving spring 73; when the resistance box 10 gear is in the second gear: electromagnetic mechanism 2 attracts iron core support 3, iron core support 3 drives moving contact 41 group to move to the position of interval resistance block 81, at this time the electromagnetic force of electromagnetic mechanism 2 is much larger than the resistance provided by interval resistance block 81, the inclined surface of moving contact 41 will slide and extrude the inclined surface of interval resistance block 81 to keep moving downward, in addition, under the pressure damping effect between conductive sleeve 72 and magnetic contact block 71, the sliding of magnetic contact block 71 is slow, magnetic contact block 71 has not slid to the corresponding position, moving contact 41 has moved away and will not be attracted and contacted with moving contact 41 to cause circuit one to be connected, when iron core support 3 moves to the bottom, moving contact 41 is connected with lower contact port 6, thereby connecting circuit two, turn off the power, iron core support 3 and moving contact 41 group reset upward under the spring thrust of electromagnetic mechanism 2, when moving contact 41 contacts the bottom of interval resistance block 81, interval resistance block 81 will be lifted to continue to reset upward, and interval resistance block 81 will lift conductive sleeve 72, after reaching a certain angle, the protruding body on interval resistance block 81 will touch the side wall of upper contact port 5 and be limited, thereby falling back to reset, in order to ensure that moving contact 41 group can smoothly follow interval resistance block 81 to be lifted, conductive connecting rod 74 is designed as a double rotating rod structure to avoid hindering the overall reset movement. In addition, it is worth noting that when buffer rod 92 resets beyond the position of the air hole in the upper quarter of buffer cylinder 91, the air between buffer cylinder 91 and buffer rod 92 can only be discharged through the upper small hole, thereby generating a gradually weakened pressure difference, slowing down the reset movement speed of iron core support 3 and moving contact 41 group, preventing mechanical damage to the mechanism.

[0035] It should be noted that in the present document, the terms such as first and second, etc. are used merely to differentiate one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that includes a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article or apparatus.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An electrical cabinet contactor assembly, comprising a housing (1) mounted in the electrical cabinet, an electromagnetic mechanism (2) mounted inside the housing (1), an iron core bracket (3) disposed above the electromagnetic mechanism (2), and characterized in that: A conductive rod (42) group is fixedly mounted on the core bracket (3), and both ends of the conductive rod (42) are slidably connected to a movable contact (41) group. A movable contact spring (43) group is fixedly connected between the inner wall of the movable contact (41) group and the conductive rod (42). An upper contact port (5) group and a lower contact port (6) group are also fixedly mounted on the housing (1). A spacer block (81) is fixedly mounted on the upper contact port (5), and a conductive sleeve (72) is fixedly mounted on the spacer block (81). The inner wall of the conductive sleeve (72) is slidably connected to a magnetic contact block (71). The conductive sleeve (72) is rotatably connected to a conductive connecting rod (74), and the conductive connecting rod (74) is rotatably connected to the upper contact port (5). Multiple movable contact (41) groups can contact the magnetic contact block (71) group to connect circuit one, and multiple movable contact (41) groups can contact the lower contact port (6) group to connect circuit two.

2. The electrical cabinet contactor assembly according to claim 1, characterized in that: A buffer mechanism (9) group is also provided in the housing (1), the buffer mechanism (9) consisting of a buffer cylinder (91) and a buffer rod (92), the buffer cylinder (91) group being fixedly mounted inside the housing (1), the buffer rod (92) group being fixedly mounted on the core bracket (3), and the buffer rod (92) being in sliding contact with the inner wall of the buffer cylinder (91).

3. The electrical cabinet contactor assembly according to claim 1, characterized in that: One end of the blocking block (81) is rotatably connected to a pulley mechanism (82) and a fixing frame (83), the pulley mechanism (82) is in rolling contact with the upper contact port (5), and the fixing frame (83) is rotatably connected to the upper contact port (5).

4. The electrical cabinet contactor assembly according to claim 1, characterized in that: A magnetic contact spring (73) is fixedly connected between the magnetic contact block (71) and the inner wall of the conductive sleeve (72), and the magnetic contact spring (73) provides thrust for resetting the magnetic contact block (71).

5. The electrical cabinet contactor assembly according to claim 1, characterized in that: One end of the moving contact (41) and one end of the blocking block (81) are parallel inclined surfaces.

6. The electrical cabinet contactor assembly according to claim 2, characterized in that: An air inlet hole group is provided at the upper quarter of the buffer cylinder (91) for changing the air pressure intensity in the buffer cylinder (91).

7. The electrical cabinet contactor assembly according to claim 1, characterized in that: The plurality of movable contact (41) groups and magnetic contact block (71) groups have magnetic forces with opposite magnetic properties.

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