CN220382473U - Special disassembly pliers for MC4 plug of photovoltaic power station - Google Patents

Abstract

The special dismounting clamp for the MC4 plug of the photovoltaic power station comprises a left clamp body and a right clamp body which are symmetrical and identical in structure, wherein the left clamp body and the right clamp body are composed of clamp heads and clamp handles, and the front ends of the clamp heads are clamp mouths; the clamp handle comprises an inclined connecting part, a straight lengthening part and an arc-shaped operating part which are sequentially connected, and at least the arc-shaped operating part of the clamp handle is provided with an insulating outer sheath; the inclined connecting part is fixedly connected to the lower end of the clamp head, the clamp mouth is bent to the front surface of the clamp head, the bending angle is 90 degrees, and the whole shape of the clamp mouth is in an elongated triangle shape. The pliers of the utility model have long service life and are not easy to damage; the application range is wide, the efficiency is high, and the operation difficulty in a narrow space can be greatly reduced; the safety coefficient in the use process is high, and the safety protection can be effectively carried out on the user.

Description

Special disassembly pliers for MC4 plug of photovoltaic power station

Technical Field

The utility model relates to a photovoltaic power station MC4 plug, in particular to a special dismounting clamp for the photovoltaic power station MC4 plug, and belongs to the technical field of photovoltaics.

Background

As is known, MC4 plugs, i.e. MC4 photovoltaic dc connectors, also called MC connectors, the inventor of which is Multi-Contact by swiss company, wherein MC is a brand abbreviation and 4 is the size of the metal core diameter. The MC4 plug is a connecting device between a solar cell matrix formed by the solar cell modules and the solar charging control device, and mainly used for connecting and protecting the solar photovoltaic modules, connecting direct current power generated by the solar cells with an external circuit and conducting direct current generated by the solar photovoltaic modules. Thus, in photovoltaic systems, many links require the use of MC4 plugs, such as cable connections between junction boxes, components, and inverters.

In the photovoltaic system, the existing photovoltaic connector has a large duty ratio, but if the type selection, the processing and the compatibility are not paid attention to, faults are easy to occur, and the generated energy loss caused by the damage or the burning of the connector is arranged at the 2 nd position in various faults of a power station according to statistics. In the whole photovoltaic system, the voltage of the direct current side is usually 600-1100V, and once the joint of the photovoltaic assembly is loosened, the poor contact is very easy to cause the phenomenon of direct current arc discharge.

At present, in the process of disassembling the MC4 plug, the plastic disassembling tool on the market is very difficult to operate, and mainly comprises the following steps: 1) The MC4 disassembling tools used at present are all plastic products, and the service life is short; 2) The existing MC4 dismounting tool is unreasonable in size design, the handle part is too long, the bending angle of the jaw is about 60 degrees, and the operation in a narrow space can not be performed; 3) The handheld position of the traditional MC4 disassembling tool is too close to the MC4 disassembling position, and the safety factor in the using process is low. Once the operation is abnormal, the direct current arc discharge can lead to the rapid rise of the contact temperature, the continuous arc can generate high temperature of 1000-3000 ℃, and the high temperature carbonizes surrounding devices, the light person fuses a safety and a cable, and the heavy person burns out equipment to cause fire, so that the arc breaks down the palm and cuts off personal injury accidents of fingers.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the special dismounting clamp for the MC4 plug of the photovoltaic power station, which has the advantages that the service life can be prolonged, and the dismounting clamp is not easy to damage; the application range is wide, the efficiency is high, and the operation difficulty in a narrow space can be greatly reduced; the safety coefficient in the use process is high, and the safety protection can be effectively carried out on the user.

The technical scheme adopted for solving the technical problems is as follows:

the special dismounting clamp for the MC4 plug of the photovoltaic power station comprises a left clamp body and a right clamp body which are symmetrical and identical in structure, wherein the left clamp body and the right clamp body are composed of clamp heads and clamp handles, and the front ends of the clamp heads are clamp mouths; the clamp handle comprises an inclined connecting part, a straight lengthening part and an arc-shaped operating part which are sequentially connected, and at least the arc-shaped operating part of the clamp handle is provided with an insulating outer sheath; the inclined connecting part is fixedly connected to the lower end of the clamp head, the clamp mouth is bent to the front surface of the clamp head, the bending angle is 90 degrees, and the whole shape of the clamp mouth is in an elongated triangle shape.

Optionally, the front surface of the arc-shaped operation part is arc-shaped, and the side surface of the arc-shaped operation part is drum-shaped; the left clamp body and the right clamp body are arranged in a mode that the radian directions of the two left and right arc-shaped operation parts are opposite, and the concave surfaces are inward.

Optionally, the left and right oblique connecting parts of the left and right clamp bodies are obliquely arranged in a direction deviating from each other.

Optionally, a right limit structure and a left limit structure are respectively arranged between the left clamp head of the left clamp body and the right clamp handle of the right clamp body and between the right clamp head of the right clamp body and the left clamp handle of the left clamp body, and are used for controlling the maximum opening of the clamp jaw to be 22mm.

Optionally, the right limit structure is the same with the left limit structure, all include fixed connection at the outside gag lever post of binding clip and offer the outside spacing groove of pincers handle, the terminal and the spacing groove cooperation of gag lever post are connected.

Optionally, the limiting groove is formed on the inclined connecting part of the clamp handle, and the position of the limiting groove is the middle protruding part of the inclined connecting part.

Optionally, the spacing groove is semicircle recess, the gag lever post is arc pole and the circular head of an organic whole connection, circular head and semicircle recess block are connected.

Optionally, the insulating outer sheath is a rubber sleeve or a rubber coating with the thickness of 1.8 mm.

Compared with the prior art, the special dismounting clamp for the MC4 plug of the photovoltaic power station has the advantages that at least the following beneficial effects are realized:

according to the utility model, the left and right pliers bodies made of metal and the pliers mouth with the slender triangle structure are arranged, so that the durability is improved, and the service life is prolonged; the bending angle of the clamp mouth is set to be 90 degrees, so that the clamp handle extends along the cable direction, and the problem that the clamp handle cannot be used in a narrow area can be solved; through setting up straight extension and doing extension design to the pincers handle, can prevent to take place the electricity in the operation process and draw the arc, the electric arc burns or beat the condition emergence of dying the people, the security is higher.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic front view of a special dismounting clamp for a photovoltaic power station MC4 plug according to an embodiment of the utility model.

Fig. 2 is a schematic side view of a left clamp body in a disassembly clamp special for a photovoltaic power station MC4 plug according to an embodiment of the utility model.

The reference numerals in the drawings illustrate:

1-left clamp body; 11-left clamp head; 111-left clamp mouth; 12-left forceps handle; 121-left oblique connection; 1211-left middle lobe; 122-left straight extension; 123-left arc-shaped operation part; 124-left insulating outer sheath; 2-right clamp body; 31-right limit structure; 311-right limit rod; 3111-right arc bar; 3112-right circular head; 312-right limit groove; 3121-right semicircular groove; 32-left limit structure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Fig. 1 and 2 show a schematic structural diagram of a preferred embodiment of the present utility model, and a special disassembling clamp for a plug of a photovoltaic power station MC4 in fig. 1 includes a left clamp body 1 and a right clamp body 2 which are symmetrical and identical in structure. Referring to fig. 2, taking the left clamp body 1 as an example, the left clamp body 1 is composed of a left clamp head 11 and a left clamp handle 12, and the front end of the left clamp head 11 is a left clamp mouth 111. With continued reference to fig. 2, the left clamp handle 12 includes a left oblique connecting portion 121, a left straight extension portion 122, and a left arc-shaped operating portion 123, which are sequentially connected, and at least the left arc-shaped operating portion 123 of the left clamp handle 12 is provided with a left insulating outer sheath 124. Referring to fig. 1, the left oblique connecting portion 121 is fixedly connected to the lower end of the left clamp head 11, the left clamp mouth 111 is bent towards the front surface of the clamp head, the bending angle is 90 °, and the overall shape of the left clamp mouth 111 is in an elongated triangle shape. The specific structure of the right clamp body 2 and the left clamp body 1 are in a mirror image structure, and will not be described again.

The existing traditional MC4 dismounting tool is made of plastic products, the hardness of a dismounting contact part (namely a clamp head) is insufficient, and fracture and deformation phenomena often occur in the dismounting process, so that the dismounting tool cannot be used, and the service life is short. The special disassembly pliers for the photovoltaic power station MC4 plug of the embodiment are designed to be made of metal materials, the left pliers body and the right pliers body 2 are of thin triangular steel structures which are not easy to deform, the rigidity is good, the durability of the disassembly pliers is finally improved, and the service life of the disassembly pliers is prolonged.

The traditional MC4 dismounting tool is unreasonable in size design, the handle part is too long, the MC4 dismounting tool cannot be used in a dense area arranged in a narrow space (such as the bottom of an inverter), and the application range is limited by great limitation. The special disassembly pliers for the MC4 plug of the photovoltaic power station are capable of accurately pressing two side buckles of the MC4 plug to enable the male plug and the female plug to be conveniently plugged and pulled out, ensure the operation space and solve the problem that the special disassembly pliers cannot be used in a narrow area because the bending angle of the pliers is controlled to be 90 degrees from the traditional angle of about 60 degrees, and the special disassembly pliers are beneficial to being used in a narrow space (such as the bottom of an inverter) and a dense area.

The existing traditional MC4 dismounting tool is low in safety coefficient, the handheld position is too close to the MC4 dismounting position, the MC4 male and female head is dismounted instantly, the hands of operators are directly broken down once direct current arc discharge occurs, and the safety coefficient in the use process is low. The special disassembly pliers for the photovoltaic power station MC4 plug of the embodiment utilizes the additionally arranged straight extension part to carry out extension design on the pliers handle, can prevent electric arc discharge from happening in the operation process and electric arc burn or death, not only solves the risk of arc discharge injury caused by operation close to the intersection of the male and female heads, but also improves the safety coefficient in the use process; meanwhile, the force applied by an operator can be reduced, and the clamping part of the MC4 male and female head can be easily pressed down, so that the MC4 plug can be safely pulled out, and the operation is more convenient and labor-saving.

As one of further preferred embodiments of the present embodiment, the front surfaces of the left arc-shaped operating portion 123 and the right arc-shaped operating portion are both arc-shaped, and the side surfaces thereof are both drum-shaped; the two left and right arc-shaped operation parts of the left clamp body 1 and the right clamp body 2 are arranged in a mode that the radian directions are opposite, and the concave surfaces are inward.

The drum-type left arc-shaped operation part 123/right arc-shaped operation part and the reverse arc design matched with the palm shape can increase the contact area with the hands, thereby facilitating the force generation and improving the comfort level. However, the front sides of the left arc-shaped operating portion 123 and the right arc-shaped operating portion may be corrugated arcs, and the side surfaces thereof may be rectangular; and when still in the shape of circular arc, the two left and right arc-shaped operation parts of the left and right forceps bodies 1 and 2 can be arranged in the same way in the radian direction or are oppositely arranged but the concave surfaces are outwards.

As a further specific implementation manner of this embodiment, the two left and right oblique connection portions of the left clamp body 1 and the right clamp body 2 are obliquely arranged in a direction facing away from each other.

As a further preferred embodiment of the present embodiment, a right limit structure 31 and a left limit structure 32 are respectively disposed between the left clamp head 11 of the left clamp body 1 and the right clamp handle of the right clamp body 2 and between the right clamp head of the right clamp body 2 and the left clamp handle 12 of the left clamp body 1, so as to control the maximum opening of the clamp jaw to be 22mm.

The right limit structure 31 and the left limit structure 32 can restrict the movable limit of the left clamp mouth 111 and the right clamp mouth, and the maximum opening degree of the clamp mouth formed between the two is controlled at 22mm so as to be in line with the special use on an MC4 plug with the diameter of 18mm, and the clamp mouth is not very small. More specifically, the overall length of the straight extension portion can be designed to be 300mm, so that arc discharge phenomenon of the detachable MC4 male and female heads can be prevented from happening instantly, and operators are injured by electric arcs.

As a further specific implementation manner of this embodiment, referring to fig. 1, the right limiting structure 31 includes a right limiting rod 311 fixedly connected to the outer portion of the left clamp head 11 and a right limiting groove 312 formed on the outer portion of the right clamp handle, and the end of the right limiting rod 311 is cooperatively connected with the right limiting groove 312. Since the left and right stopper structures 32 and 31 are identical in construction, they will not be described in detail.

As a further specific implementation manner of this embodiment, referring to fig. 1, the right limiting groove 312 is formed on a right oblique connecting portion of the right pliers handle, and the position of the right limiting groove 312 is a right middle protruding portion of the right oblique connecting portion. The design of the right middle bulge not only provides the opening position of the right limit groove 312, but also does not reduce the structural strength of the right oblique connecting part. The left limiting groove, the left oblique connecting portion 121 and the left middle protruding portion 1211 are identical in design, and will not be described again.

As one of the further specific embodiments of the present embodiment, the right limiting grooves 312 are right semicircular grooves 3121, the right limiting rods 311 are right arc rods 3111 and right round heads integrally connected, and the right round heads 3112 are connected with the right semicircular grooves 3121 in a clamping manner. The shape and the position of the left limit groove and the left limit rod are designed consistently, and are not repeated.

In specific implementation, the left clamp body 1 and the right clamp body 2 are operated, the left clamp mouth 111 and the right clamp mouth move relatively along with each other, and when the left clamp mouth and the right clamp mouth move towards a direction away from each other, the opening degree of the clamp mouth is continuously increased until the right round head 3112/the left round head is contacted with the right semicircular groove 3121/the left semicircular groove, and the clamp mouth can be matched with an MC4 plug for use.

As one of the further specific implementation manners of this embodiment, the left insulating outer sheath 124/the right insulating outer sheath are rubber sleeves or rubber coatings with a thickness of 1.8 mm.

Insulation treatment is performed at least at the left arc-shaped operation part 123/right arc-shaped operation part corresponding to the handheld part, and the insulation effect of withstand voltage 1500V can be achieved through a rubber sleeve or a rubber coating with the thickness of 1.8mm, so that compared with the traditional MC4 dismounting tool, the insulation device has the insulation effect of about 500V voltage class, the insulation level is obviously higher than that of common electrical operation equipment, and the safety of a user is upgraded and protected.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, but any simple modification and equivalent variation of the above embodiment according to the technical spirit of the present utility model falls within the scope of the present utility model.

Claims (8)

1. The special dismounting clamp for the MC4 plug of the photovoltaic power station comprises a left clamp body and a right clamp body which are symmetrical and identical in structure, wherein the left clamp body and the right clamp body are composed of clamp heads and clamp handles, and the front ends of the clamp heads are clamp mouths; the method is characterized in that: the pliers handle comprises an inclined connecting part, a straight lengthening part and an arc-shaped operating part which are sequentially connected, and at least the arc-shaped operating part of the pliers handle is provided with an insulating outer sheath; the inclined connecting part is fixedly connected to the lower end of the clamp head, the clamp mouth is bent to the front surface of the clamp head, the bending angle is 90 degrees, and the whole shape of the clamp mouth is in an elongated triangle shape.

2. The special disassembly pliers for the MC4 plug of the photovoltaic power station as claimed in claim 1 is characterized in that: the front surface of the arc-shaped operation part is arc-shaped, and the side surface of the arc-shaped operation part is drum-shaped; the left clamp body and the right clamp body are arranged in a mode that the radian directions of the two left and right arc-shaped operation parts are opposite, and the concave surfaces are inward.

3. The special disassembly pliers for the MC4 plug of the photovoltaic power station as claimed in claim 2 is characterized in that: the left clamp body and the right clamp body are obliquely arranged in the direction that the left and right oblique connecting parts deviate from each other.

4. A special disassembly pliers for a photovoltaic power station MC4 plug according to claim 1, 2 or 3, characterized by: a right limit structure and a left limit structure are respectively arranged between the left clamp head of the left clamp body and the right clamp handle of the right clamp body and between the right clamp head of the right clamp body and the left clamp handle of the left clamp body, and are used for controlling the maximum opening of the clamp jaw to be 22mm.

5. The special disassembly pliers for the MC4 plug of the photovoltaic power station as claimed in claim 4 is characterized in that: the right limiting structure is the same as the left limiting structure, and comprises a limiting rod fixedly connected to the outer part of the clamp head and a limiting groove formed in the outer part of the clamp handle, and the tail end of the limiting rod is connected with the limiting groove in a matched mode.

6. The special disassembly pliers for the MC4 plug of the photovoltaic power station as claimed in claim 5 is characterized in that: the limiting groove is formed in the inclined connecting portion of the clamp handle, and the position of the limiting groove is a middle protruding portion of the inclined connecting portion.

7. The special disassembly pliers for the MC4 plug of the photovoltaic power station as claimed in claim 6 is characterized in that: the limiting groove is a semicircular groove, the limiting rod is an arc rod and a circular head which are integrally connected, and the circular head is connected with the semicircular groove in a clamping mode.

8. A special disassembly pliers for a photovoltaic power station MC4 plug according to claim 1, 2 or 3, characterized by: the insulating outer sheath is a rubber sleeve or a rubber coating with the thickness of 1.8 mm.