Strong-current electrical part opening and closing device

Abstract

The utility model belongs to the technical field of shutters, and particularly discloses a high-current electrical part shutter which comprises a protection box and an opening and closing mechanism, the opening and closing mechanism comprises a supporting frame and a screw rod, one end of the supporting frame is fixedly connected with an insulating column, the other end of the supporting frame is connected with a shell of a control box, and one end of the insulating column is fixedly connected with a motor. A control button is arranged on the outer wall of the protection box and electrically connected with the motor, the screw rotationally penetrates through the insulation column, the end, extending out of the insulation column, of the screw is fixedly connected with the motor, a sliding groove is formed in the insulation column, a sliding block is slidably connected to the sliding groove, the sliding block is in threaded connection with the screw, and an insulation push block is fixedly connected to the sliding block. The insulating push block is connected with a switch block of the contactor. The utility model aims to solve the problem that dangerous accidents are easy to occur because a contactor needs to be disconnected and connected manually in the conventional opening and closing device. According to the utility model, the insulating column, the motor and the insulating push block are arranged to form the sliding assembly, so that manual contact with the shutter is avoided, and the risk of accidents is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a switch for high-current electrical components. Background Art

[0002] A large number of high-current electrical equipment and switches are required in modern industrial and power systems. A high-current control box is required for power distribution and control equipment in the power distribution system. The control box is usually composed of components such as a metal shell, a contactor, a circuit breaker, a fuse, a voltage and current meter, and a terminal block. The contactor has the function of frequently connecting and disconnecting the current in the control circuit and controlling the electrical distribution of the high-voltage power supply line. In order to ensure the normal operation of the equipment and the safety of personnel, a high-current electrical switch is required to connect the switch to the switch block of the contactor for disconnection and connection.

[0003] However, in the use of most existing switches, it is necessary to manually touch the switch to open and close the circuit. During the process of opening and closing the circuit, strong current is prone to generate arcs, which will break through foreign objects. Therefore, dangerous accidents are prone to occur during opening and closing, causing casualties. Utility Model Content

[0004] The utility model aims to provide a switch for high-current electrical components, so as to solve the problem that in the process of opening and closing the existing switch, it is necessary to manually touch the switch to disconnect and connect the circuit, which may cause dangerous accidents and casualties during opening and closing.

[0005] In order to achieve the above-mentioned purpose, the basic scheme provided by the utility model is as follows: it includes a protective box and an opening and closing mechanism, a switch door is provided on one side of the protective box, the opening and closing mechanism includes a support frame and a screw, one end of the support frame is fixedly connected to an insulating column, and the other end is connected to the outer shell of the control box, one end of the insulating column is fixedly connected to a motor, the outer wall of the protective box is provided with a control button, the control button is electrically connected to the motor, the screw rotates and passes through the insulating column, the end of the screw extending outside the insulating column is fixedly connected to the motor, a sliding groove is provided in the insulating column, a slider is slidably connected to the sliding groove, the slider is threadedly connected to the screw, an insulating push block is fixedly connected to the slider, and the end of the insulating push block away from the slider is connected to the switch block of the contactor.

[0006] The working principle of the utility model is as follows: first, the switch door of the protection box is opened, and then the control box is installed in the protection box, and then the switch door is closed. When the switch needs to be opened, the control button is first pressed to make the motor rotate forward, and the motor drives the screw rod to rotate. At this time, the slider is driven by the rotating screw rod, and at this time, the slider slides upward in the sliding groove, and at the same time, the slider drives the insulating push block to move upward. At this time, the insulating push block pulls the switch block to open the contactor, and finally the control button is pressed to stop the motor; when the switch needs to be closed, the control button is first started to reverse the motor, and the motor drives the screw rod to rotate. At this time, the slider is driven by the rotating screw rod to slide downward in the sliding groove, and at the same time, the slider drives the insulating push block to move downward. At this time, the insulating push block pushes the switch block to close the contactor, and finally the control button is pressed to stop the motor.

[0007] Beneficial effect: By setting up an insulating column, a motor and an insulating push block to form a sliding assembly, when the switch needs to be opened and closed, the switch is controlled by a control button to avoid manual contact with the switch, thereby greatly reducing the risk of accidents during the opening and closing process.

[0008] Option 2, which is a preferred option of the basic option, comprises two groups of opening and closing mechanisms; the purpose of providing two groups of opening and closing mechanisms is to reduce the mechanical stress on the opening and closing mechanisms when the opening and closing mechanisms are frequently used.

[0009] Option three is a preferred option of the basic option, in which a heat dissipation structure is provided on the protection box; the heat dissipation structure is provided on the protection box to facilitate cooling of the electrical components in the control box when they are overheated.

[0010] Option 4 is a preferred option of Option 3, wherein the heat dissipation structure includes a motor, a vent is provided on the protective box, a fixed shell is provided on the protective box, a limiting hole penetrating the protective box is provided on the fixed shell, the motor is connected in the fixed shell, and one end of the motor is connected to a heat dissipation fan; when in use, when the electrical components in the control box overheat, the motor is started, the motor drives the heat dissipation fan to rotate, and the heat dissipation fan blows the hot air inside the protective box through the vent to the outside of the protective box, thereby reducing the heat of the electrical components in the control box.

[0011] Option 5 is a preferred option of Option 4. A fixing plate is bolted to the fixing shell, and a first filter is clamped between the fixing shell and the fixing plate, and the first filter is opposite to the limiting hole. The filter is arranged between the fixing shell and the fixing plate to prevent dust from damaging the electrical components in the control box on the one hand, and to facilitate the replacement or maintenance of the motor on the other hand.

[0012] Option six, which is a preferred option of option four, is provided with a second filter on the vent; the filter is provided on the vent to prevent dust from damaging the electrical components in the control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of a high-current electrical switch of the utility model;

[0014] Figure 2 It is an exploded schematic diagram of an opening and closing mechanism of a switch for a high-current electrical component of the utility model;

[0015] Figure 3 This is an exploded schematic diagram of a heat dissipation structure of a switch for a high-current electrical component of the utility model;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: 1. protective box; 2. heat dissipation structure; 201. limit hole; 202. threaded hole; 203. motor; 204. first filter; 205. bolt; 206. cooling fan; 207. fixing plate; 208. fixing shell; 3. control button; 4. switch door; 5. vent; 501. second filter; 6. control box; 7. opening and closing mechanism; 701. support frame; 702. switch block; 703. insulating column; 704. motor; 705. sliding groove; 706. screw; 707. slider; 708. insulating push block; 8. contactor.

[0019] Example 1

[0020] like Figures 1 to 4 As shown: a high-current electrical component switch, including a protection box 1 and an opening and closing mechanism 7, a switch door 4 is provided on one side of the protection box 1, the opening and closing mechanism 7 includes a support frame 701 and a screw 706, one end of the support frame 701 is fixedly connected to an insulating column 703, and the other end is connected to the shell of the control box 6, one end of the insulating column 703 is fixedly connected to a motor 704, the outer wall of the protection box 1 is provided with a control button 3, the control button 3 is electrically connected to the motor 704, the screw 706 rotates and passes through the insulating column 703, and the end of the screw 706 extending outside the insulating column 703 is fixedly connected to the motor 704, a sliding groove 705 is opened in the insulating column 703, a slider 707 is slidably connected to the sliding groove 705, the slider 707 is threadedly connected to the screw 706, an insulating push block 708 is fixedly connected to the slider 707, and the end of the insulating push block 708 away from the slider 707 is connected to the switch block 702 of the contactor 8, and the opening and closing mechanism 7 is provided with two groups.

[0021] A heat dissipation structure 2 is provided on the protective box 1, and the heat dissipation structure 2 includes a motor 203. A vent 5 is provided on the protective box 1. A fixed shell 208 is provided on the protective box 1. A limiting hole 201 that penetrates the protective box 1 is provided on the fixed shell 208. The motor 203 is connected in the fixed shell 208. One end of the motor 203 is connected to a cooling fan 206. A fixing plate 207 is bolted to the fixing shell 208. A first filter 204 is clamped between the fixing shell 208 and the fixing plate 207. The first filter 204 is opposite to the limiting hole 201. A second filter 501 is provided on the vent 5.

[0022] The implementation method of this embodiment is: first open the switch door 4 of the protection box 1, install the control box 6 in the protection box 1, and then close the switch door 4. When it is necessary to turn on the contactor 8, first press the control button 3 to make the motor 704 rotate forward. The motor 704 drives the screw 706 to rotate. As the screw 706 rotates, the slider 707 is driven by the rotating screw 706 to slide upward in the sliding groove 705. At the same time, the slider 707 drives the insulating push block 708 to move upward. At this time, the insulating push block 708 pulls the switch block 702 to turn on the contactor 8. After the contactor is turned on, press the control button 3 to stop the motor 704.

[0023] When it is necessary to disconnect the contactor 8, first press the control button 3 to reverse the motor 704, and the motor 704 drives the screw 706 to rotate. As the screw 706 rotates, the slider 707 is driven by the rotating screw 706 to slide downward in the sliding groove 705. At the same time, the slider 707 drives the insulating push block 708 to move downward. At this time, the insulating push block 708 pushes the switch block 702 to close the contactor 8. After closing the contactor 8, press the control button 3 to stop the motor 704.

[0024] When overheating occurs in the control box 6, the motor 203 is started, and the motor 203 drives the cooling fan 206 to rotate. The cooling fan 206 blows the hot air inside the protection box 1 to the outside of the protection box 1 through the vent 5, thereby dissipating the heat of the electrical components in the control box 1. When the heat dissipation is completed, the motor 203 can be turned off.

[0025] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A high current electrical switch, characterized in that: The invention comprises a protection box (1) and an opening and closing mechanism (7), wherein a switch door (4) is provided on one side of the protection box (1), and the opening and closing mechanism (7) comprises a support frame (701) and a screw rod (706), wherein one end of the support frame (701) is fixedly connected to an insulating column (703), and the other end is connected to the outer shell of a control box (6), and one end of the insulating column (703) is fixedly connected to a motor (704), and the outer wall of the protection box (1) is provided with a control button (3), and the control button (3) is electrically connected to the motor (704), and the screw rod (706) The screw rod (706) is rotated and passes through the insulating column (703). One end of the screw rod (706) extending outside the insulating column (703) is fixedly connected to the motor (704). A sliding groove (705) is opened in the insulating column (703). A slider (707) is slidably connected to the sliding groove (705). The slider (707) is threadedly connected to the screw rod (706). An insulating push block (708) is fixedly connected to the slider (707). The end of the insulating push block (708) away from the slider (707) is connected to the switch block (702) of the contactor (8).

2. A high current electrical switch according to claim 1, characterized in that , the opening and closing mechanism (7) is provided with two groups.

3. A high current electrical switch according to claim 1, characterized in that: The protection box (1) is provided with a heat dissipation structure (2).

4. A high current electrical switch according to claim 3, characterized in that: The heat dissipation structure (2) comprises a motor (203), a ventilation hole (5) is provided on the protective box (1), a fixed shell (208) is provided on the protective box (1), a limiting hole (201) is provided on the fixed shell (208) and passes through the protective box (1), the motor (203) is connected inside the fixed shell (208), and one end of the motor (203) is connected to a heat dissipation fan (206).

5. A high current electrical switch according to claim 4, characterized in that: A fixing plate (207) is bolted to the fixing shell (208), a first filter screen (204) is clamped between the fixing shell (208) and the fixing plate (207), and the first filter screen (204) is directly opposite to the limiting hole (201).

6. A high current electrical switch according to claim 4, characterized in that: A second filter screen (501) is provided on the ventilation opening (5).

Images