Novel switch cabinet base device

Abstract

A novel switch cabinet base device comprises a base body, wheels, a valve, a positioning mechanism and an electric leakage detection circuit. The wheels are respectively arranged at the lower end of the base body; the lower end of a shell of the switch cabinet is arranged at the upper end in the base body; the side end of the base body is of a hollow structure, a liquid adding pipe and a liquid discharging pipe are installed at the outer side end of the base body, and the other end of the liquid discharging pipe is connected with the liquid inlet end of the valve. The positioning mechanism comprises an electric push rod and a top plate, the upper end of the top plate is installed at the lower end of the electric push rod, and the upper end of the electric push rod is installed at the outer lower side end of the base body. The electric leakage detection circuit is installed in the element box. The switch cabinet carrying and transferring device not only has the functions of carrying and transferring the switch cabinet, but also can control the switch cabinet not to move when the switch cabinet is located at an operation station; the switch cabinet can be cooled, the probability that the switch cabinet works abnormally or is damaged due to the fact that the temperature is too high is reduced, loud prompt sound can be given out when the switch cabinet leaks electricity, workers are prompted to pay attention to safety, and the probability that related personnel get an electric shock is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinet equipment, in particular to a novel switch cabinet base device. Background Art

[0002] A switch cabinet is an electrical device whose main function is to open and close, control and protect electrical equipment during power generation, transmission, distribution and energy conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protective devices. In some workplaces, it is necessary for the switch cabinet to be able to move to the relevant area to safely control the power supply to the electrical equipment. In the prior art, in order to facilitate the displacement of the switch cabinet, a carrier with wheels is used to carry the switch cabinet, which can facilitate the displacement of the switch cabinet.

[0003] The authorized patent of my country with patent number "201520083569.9" and patent name "A switch cabinet base" records that "the technical solution provided by the utility model can provide support for the installation of the switch cabinet, reduce the time of moving the switch cabinet, and improve the efficiency of the assembly of the switch cabinet". As can be seen from the above, although the comparative patent has achieved the technical effect of the invention described in it, it is limited by the structure and has the following technical disadvantages like other switch cabinet bases in the field. First, it does not have a positioning function. After the switch cabinet is transferred to the corresponding workstation, it is easy to move due to the universal wheels under the action of external forces (such as personnel or other equipment contacting and colliding with the switch cabinet), which will cause the switch cabinet itself to move, and then it will have a certain impact on the safe use of the switch cabinet. Second, it does not have a heat dissipation function for the switch cabinet, which is not conducive to improving the service life of the switch cabinet (there is a probability that the temperature is too high and a fire will occur in the switch cabinet). Third, it does not have a switch cabinet leakage detection function. When the switch cabinet leaks due to various reasons, the relevant personnel will not be prompted, so there is a probability that the relevant personnel will be electrocuted. In summary, it is particularly necessary to provide a base device that can not only play a role in load transfer for the switch cabinet, but also play a role in positioning the switch cabinet, and can also play a role in heat dissipation and leakage detection for the switch cabinet. Utility Model Content

[0004] In order to overcome the drawbacks of the base used in conjunction with the existing switch cabinets due to structural limitations as described in the background, the utility model provides a new switch cabinet base device which not only has the function of carrying and transferring the switch cabinet, but also, under the joint action of relevant mechanisms, can dissipate heat and position the switch cabinet, and can promptly draw the attention of relevant personnel to safety when the switch cabinet leaks electricity, thereby minimizing electric shock accidents to relevant personnel.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A novel switch cabinet base device comprises a base body, wheels, and a valve, and is characterized in that it also has a positioning mechanism and a leakage detection circuit; there are multiple wheels, and the multiple wheels are respectively installed around the lower end of the base body, the upper end of the base body is an open mechanism, and the lower end of the switch cabinet shell is arranged at the upper end of the base body; the hollow structure at the side end of the base body, the upper part of one outer end and the lower part of the other side end of the base body are respectively installed with a filling pipe and a drain pipe, and the other end of the drain pipe is connected to the liquid inlet end of the valve; the positioning mechanism comprises an electric push rod and a top plate, the upper end of the top plate is installed at the lower end of the electric push rod, and the upper end of the electric push rod is installed at the outer lower side end of the base body; the leakage detection circuit is installed in the component box, and the signal input end of the leakage detection circuit is electrically connected to the base body of the base body.

[0007] Furthermore, water is added into the hollow part of the base body through a liquid adding pipe, and a plurality of fin-shaped heat sinks are respectively installed at the outer ends of the base body.

[0008] Furthermore, when the push column of the electric push rod is at the top dead center, the lower end of the top plate is higher than the lower end height of the wheel; when the push column of the electric push rod is at the bottom dead center, the lower end of the top plate is lower than the lower end height of the wheel.

[0009] Furthermore, the inner diameter of the upper end of the base body is larger than the outer diameter of the lower end of the switch cabinet, and the lower end of the shell of the switch cabinet is a horizontal structure and is in full contact with the inner upper end of the base body.

[0010] Furthermore, the leakage detection circuit includes an electrically connected diode, a resistor, a thyristor, a buzzer, and a power switch A, the cathode of the diode is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and one end of the third resistor, the other end of the third resistor is connected to the thyristor control electrode, the cathode of the thyristor is connected to the positive power input end of the buzzer, the negative power input end of the buzzer is connected to the other end of the second resistor, and one end of the power switch A is connected to the anode of the thyristor.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) the present invention is based on a base body, which not only has the function of carrying and transferring the switch cabinet, but also can control the positioning mechanism through the power switch to prevent the switch cabinet from shifting when it is located at the working station; (2) because water is added to the outer side and the hollow part of the lower end of the base body, it can partially dissipate the heat of the switch cabinet, thereby reducing the probability of abnormal operation or damage of the switch cabinet due to excessive temperature. When the switch cabinet leaks electricity due to various reasons, the leakage current of the switch cabinet can be transmitted to the leakage detection circuit through the base body, and then the buzzer will emit a loud warning sound to remind the staff to pay attention to safety, thereby minimizing the probability of electric shock accidents to relevant personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in the figure, the new switch cabinet base device includes a battery G, a charging socket CZ, a power switch JK, a base body 3, a universal wheel 1, and also has a positioning mechanism and a leakage detection circuit 2; there are four universal wheels 1, and the upper ends of the four universal wheels 1 are respectively installed around the lower end of the base body 3 by bolts. The upper end of the base body 3 is an open mechanism, and the lower end of the shell of the switch cabinet (not shown in the figure) is placed at the upper end of the base body 3; the front, back, left, right and lower ends of the base body 3 are interconnected hollow structures 31, and a liquid filling pipe 32 interconnected with the hollow part of the base body 3 is longitudinally welded on the outer side of the upper middle part of the rear end of the base body 3. A drain pipe 33 communicating with the interior is welded to the lower front end of the base body 3, and the lower end of the drain pipe 33 is threadedly connected to the liquid inlet end of a manual valve 4 (the valve 4 can be opened to release the water in the base body 3); the positioning mechanism includes an electric push rod M1 and a rectangular top plate 51, the middle part of the upper end of the top plate 51 is welded to the lower end of the push column of the electric push rod M1, and the upper end of the cylinder of the electric push rod M1 is bolted to the middle part of the outer lower side end of the base body 3; the battery G, the charging socket CZ, the power switch JK, and the leakage detection circuit 2 are installed on the circuit board in the component box 6, and the component box 6 is installed in the middle part of the front outer side end of the base body 3.

[0016] Figure 1 , 2As shown, water is added into the hollow part of the base body 3 through the liquid adding pipe, and multiple fin-shaped heat sinks 34 are welded around the outer end of the base body 3 (which is beneficial for the base body 3 to absorb the heat of the switch cabinet). When the push column of the electric push rod M1 is at the top dead center, the lower end of the top plate 51 is higher than the lower end height of the universal wheel 1. When the push column of the electric push rod M1 is at the bottom dead center, the lower end of the top plate 51 is lower than the lower end height of the universal wheel 1. The upper inner diameter of the base body 3 is slightly larger than the lower outer diameter of the switch cabinet (to facilitate the switch cabinet to be placed in the base body 3). The lower end of the switch cabinet shell is a horizontal structure and is in full contact with the upper end of the base body 3. The leakage detection circuit includes a diode VD, resistors R1, R2, R3, a thyristor VS, a buzzer B, and a power switch AS (the handle is located outside the front end opening of the component box 6) connected via circuit board wiring. The cathode of the diode VD is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the second resistor R2 and one end of the third resistor R3, the other end of the third resistor R3 is connected to the control electrode of the thyristor VS, the cathode of the thyristor VS is connected to the positive power input end of the buzzer B, the negative power input end of the buzzer B is connected to the other end of the second resistor R2, and one end of the power switch AS is connected to the anode of the thyristor VS. The two poles of the battery G and the two ends of the charging socket CZ (when the battery G is out of power, the external 12V power charger plug can be inserted into the charging socket CZ to charge it), the 1st and 2nd pins of the power switch JK, the power input end of the leakage detection circuit, the other end of the power switch AS (the handle is located outside the second opening at the front end of the component box) and the negative power input end of the buzzer B are electrically connected respectively, the power output ends 3, 4 and 5, 6 of the power switch JK are electrically connected to the power input end of the electric push rod M1, and the positive pole of the diode VD at the signal input end of the leakage detection circuit and the outer end of the base body 3 of the base body are connected through a wire.

[0017] Figure 1 , 2As shown, when the present invention is used, the lower end of the switch cabinet is placed inside the upper end of the base body 3 (the height is lower than the height of the lower end of the switch cabinet door). Since the lower end of the switch cabinet shell is close to the upper end of the base body 3, the heat generated by the switch cabinet during operation will be effectively transferred to the base body 3, and then dissipated into the air through the heat sink of the base body 3. In this way, since water is added to the outer side of the base body 1 and the hollow part at the lower end, it can play a partial heat dissipation role for the switch cabinet, reducing the probability of abnormal operation or damage of the switch cabinet due to excessive temperature. Since the lower end of the base body 1 of the present invention has four universal wheels 1, the staff can easily push the switch cabinet to the relevant position for operation. After the staff member turns the handle of the power switch JK to the left, the 1st and 2nd pins and the 3rd and 4th pins of the power switch JK are connected respectively, so that the positive and negative power input ends of the electric push rod M1 are powered, and its push column pushes the top plate 51 downward to contact the ground, and the power switch is turned off after it is in place; because the lower end of the top plate 51 is in close contact with the ground, the equipment as a whole is more stable, and even if someone collides with the switch cabinet (as long as the collision operation force is not particularly large), the switch cabinet will not move, ensuring the normal and stable operation of the switch cabinet; after the staff member turns the handle of the power switch JK to the right, the 1st and 2nd pins and the 5th and 6th pins of the power switch JK are connected respectively, so that the negative and positive power input ends of the electric push rod M1 are powered, and its push column pushes the top plate 51 upward to separate from the ground, and the power switch is turned off after it is in place; because the lower end of the top plate 51 is no longer in contact with the ground, the equipment as a whole can be easily moved again. When there is no leakage in the switch cabinet, there is no power to trigger the thyristor VS to turn on, then the buzzer B will not be powered to sound, indicating that there is no leakage in the switch cabinet. When the switch cabinet leaks, the leakage current enters one end of the resistor R1 through the half-wave rectification of the diode VD. The voltage is divided by the resistors R11 and R2, and the resistor R3 steps down the voltage and limits the current to enter the control electrode of the thyristor VS. The thyristor VS is triggered to turn on, and then the buzzer B is energized and sounds to remind the staff that the switch cabinet has a leakage. Pay attention to safety and do not touch the switch cabinet easily before the fault is eliminated, so as to minimize the chance of electric shock (after turning off the power switch AS, the buzzer B will no longer sound). Figure 2 As shown, the battery G model is 12V / 20Ah; the resistance values ​​of resistors R1, R2, and R3 are 4.7M, 12K, and 10K respectively; the thyristor VS is a plastic-encapsulated single-phase thyristor of model MCR100-1; the buzzer B is a finished product of a continuous sound buzzer of model MF12V; the electric push rod M1 is a finished product of a reciprocating electric telescopic rod with a power of 60W.

[0018] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0019] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new switch cabinet base device, including a base body, wheels, and valves, characterized in that: It also has a positioning mechanism and a leakage detection circuit; there are multiple wheels, which are respectively installed around the lower end of the base body, the upper end of the base body is an open mechanism, and the lower end of the switch cabinet shell is arranged at the upper end inside the base body; the hollow structure of the side end of the base body, the upper part of one outer end and the lower part of the other side end of the base body are respectively installed with a filling pipe and a drain pipe, and the other end of the drain pipe is connected to the liquid inlet end of the valve; the positioning mechanism includes an electric push rod and a top plate, the upper end of the top plate is installed at the lower end of the electric push rod, and the upper end of the electric push rod is installed at the outer lower side end of the base body; the leakage detection circuit is installed in the component box, and the signal input end of the leakage detection circuit is electrically connected to the base body of the base body.

2. The novel switch cabinet base device according to claim 1 is characterized in that: Water is added into the hollow part of the base body through a liquid adding pipe, and a plurality of fin-shaped heat sinks are respectively installed at the outer ends of the base body.

3. The novel switch cabinet base device according to claim 1 is characterized in that: When the push column of the electric push rod is at the top dead center, the lower end of the top plate is higher than the lower end height of the wheel. When the push column of the electric push rod is at the bottom dead center, the lower end of the top plate is lower than the lower end height of the wheel.

4. The novel switch cabinet base device according to claim 1 is characterized in that: The inner diameter of the upper end of the base body is larger than the outer diameter of the lower end of the switch cabinet. The lower end of the shell of the switch cabinet is a horizontal structure and is in full contact with the upper end of the base body.

5. The novel switch cabinet base device according to claim 1 is characterized in that: The leakage detection circuit includes an electrically connected diode, a resistor, a thyristor, a buzzer, and a power switch A. The cathode of the diode is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and one end of the third resistor, the other end of the third resistor is connected to the thyristor control electrode, the thyristor cathode is connected to the positive power input end of the buzzer, the negative power input end of the buzzer is connected to the other end of the second resistor, and one end of the power switch A is connected to the anode of the thyristor.

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