CN113953614B - Portable carbon resistance welding device - Google Patents

Abstract

The invention provides a portable carbon resistance welding device, which relates to the technical field of welding devices, including: a storage box; the lower part of the front end of the storage box is provided with a rectangular opening, and the front end of the storage box is located outside the rectangular opening. Blocking assembly; the right end surface of the containing box is provided with an E-shaped port, and the right end surface of the containing box is located at the E-shaped port. part, the present invention can make the welding device not be restricted when used in the field through the setting of the housing box and the battery component, and through the setting of the shielding component, the welding device does not need to use tools to tighten a large number of bolts during maintenance. The firmware is disassembled, thereby improving the convenience of maintenance of the welding device, and solving the problem that the current welding device is limited in field use, and it is not easy to disassemble during maintenance, which reduces the convenience of maintenance.

Description

Portable carbon resistance welding device

technical field

The invention relates to the technical field of welding devices, in particular to a portable carbon resistance welding device.

Background technique

With the country's line transformation of urban and rural power grids, the power distribution outgoing cables, household lines, household lines and agricultural irrigation lines on the lines have been changed from the original overhead lines to buried cables. In the distribution network lines, whether it is a high-voltage line or a low-voltage line, it is a mixed material line of aluminum and copper lines. Because the copper-aluminum connection is easy to heat, corrode, and disconnect at the connection point, the power supply line will appear. Electrical faults such as phase failure, short circuit, and power outage bring inconvenience to the production and life of residents. In order to avoid line faults and ensure reliable power supply, it is necessary to solve the problem of distribution network line construction technology, and the key is to solve the problem of "copper-aluminum connection oxidation".

However, there are currently two main methods to solve copper-aluminum connection oxidation. One is to use copper-aluminum transition clamps and terminals; the other is to use cable ends and wire ends to be tinned. Aluminum transition clips and terminals", the treatment method of hot tin is rarely used, only the joints and connection points in indoor lighting circuits are often treated with hot tin. The hot tin treatment has an advantage, which can make the copper and aluminum wires tightly connected, and solve the problem of poor contact caused by the oxidation of copper and aluminum connections. It is limited when used in the field, and although it can be electrically connected to an external power supply through a wire, the operation process is time-consuming and laborious, and it is very inconvenient to carry welding tools, which leads to certain limitations in field soldering work, and the current welding device is under maintenance. At the same time, because the internal structure of the shell is usually fastened by a large number of bolts, it is not easy to disassemble, which reduces the convenience of maintenance of the welding device.

Contents of the invention

In view of this, the present invention provides a portable carbon resistance welding device, which can prevent the welding device from being restricted when used in the field through the setting of the accommodating box body and the battery component, and through the setting of the shielding component, the welding device can During maintenance, it is not necessary to disassemble a large number of bolts and other fasteners through tools, thereby improving the convenience of maintenance of the welding device.

The invention provides a portable carbon resistance welding device, which specifically includes: a storage box; a rectangular opening is opened at the lower part of the front end of the storage box, and a shielding assembly is installed outside the rectangular opening on the front end of the storage box; The right end of the containing box is provided with an E-shaped port, and the right end of the containing box is located at the E-shaped port. The battery assembly is installed on the bottom end surface inside the body; a support plate is fixed inside the housing box, and a control panel and an overcurrent protection device are installed on the left side of the upper surface of the support plate, and a control switch is arranged on the control panel, and the upper surface of the support plate is There is a wire connector in the middle, and a hand-held welding piece is placed on the right side of the upper surface of the support plate, a strap is arranged on the rear end of the storage box, a dovetail-shaped slide bar is installed on the inner bottom of the storage box, and two wire connectors are provided. The socket is connected, and a box cover is rotated through a hinge at the box opening on the upper part of the containing box body, and a handle is provided on the upper end surface of the box cover.

Optionally, the hand-held welding piece includes insulating pliers, a bar-shaped copper block, a current wire and a selenium carbon rod. A bar-shaped copper block is fixed on the front and rear sides of the right end of the insulating pliers, and the two bar-shaped copper blocks are connected to each other. A current wire is connected to the back; selenium carbon rods are arranged on the opposite surfaces of the two strip-shaped copper blocks, and joints are arranged at the other ends of the two current wires.

Optionally, the shading assembly includes a shading plate, a slide rail, a metal limit plate and a buckle, the upper and lower sides of the shading plate are provided with bar-shaped sliders, and each bar-shaped slider is slid on the outside. A slide rail fixed on the front end of the storage box; the left ends of the two slide rails are provided with a metal limiting plate fixed on the front end of the storage box, and the middle part of the left end of the metal limiting plate is provided with two rectangular sliding openings, There is a buckle sliding inside each rectangular sliding opening, and a spring is installed inside each rectangular sliding opening.

Optionally, the shielding assembly further includes a clamping plate and a circular magnet, the clamping plate is fixed on the left side of the front end of the shielding plate, and a rectangular bayonet is opened in the middle of the left end of the clamping plate; the clamping The left end surface of the plate is vertically symmetrical with two rectangular grooves, and each rectangular groove is provided with three circular magnets.

Optionally, the blowing mechanism includes a blowing cover A, a blowing cover B, an air intake cover, a micro motor and a blowing fan, the blowing cover A is an E-shaped shell structure, and the blowing cover A is fixed inside the E-shaped port , the right side of blowing cover A is connected to blowing cover B through a connecting pipe, and the right end of blowing cover B is provided with an air inlet cover, and a filter screen is installed at the air inlet at the right end of the air intake cover, and the left end of blowing cover A is uniformly provided with blowing holes ; The inside of the air intake hood is connected with a blowing fan through the rotating shaft bracket, and the front end of the rotating shaft on the blowing fan is provided with a first bevel gear, the micro motor is fixedly installed on the rear side of the air intake hood, and the rotating shaft on the micro motor runs through the air intake The rear side of the cover, and the front end of the rotating shaft on the micro-motor is provided with a second bevel gear meshed with the first bevel gear, and the outside of the rotating shaft on the micro-motor is provided with a driving pulley, and the micro-motor is electrically connected with the control board.

Optionally, the cleaning part includes a U-shaped support plate, a reciprocating screw rod, a cleaning brush and a screw nut. Rod, a guide rod is arranged inside the 匚-shaped support plate, and a cleaning brush slides outside the guide rod; the inside of the cleaning brush is fixedly embedded with a screw nut, and the screw nut is threadedly connected with the reciprocating screw rod, and the cleaning brush is The bristles of the bristles are in contact with the right side of the filter screen on the air inlet hood, and the rear end of the reciprocating screw rod is provided with a driven pulley, and the driven pulley is connected to the driving pulley through a belt, and the diameter of the driven pulley is the diameter of the driving belt three times the wheel diameter.

Optionally, the limiting part includes a frame-shaped sliding bracket, a sliding block, a pull rod and a plug-in strip, the number of the frame-shaped sliding brackets is two, and the two frame-shaped sliding brackets are fixed on the receiving box At the lower part of the rear end surface, there is a sliding block sliding inside each frame-shaped sliding bracket, and the lower end of each sliding block is provided with a plug-in strip that runs through the bottom of the frame-shaped sliding bracket. Angle; the upper end of each sliding block is provided with a pull rod that runs through the top of the frame-shaped sliding bracket, and the outside of each pull rod is located inside the frame-shaped sliding bracket and is sleeved with a spring, and the upper ends of the two pull rods are fixed. With pull bar.

Optionally, the battery assembly includes a sliding support plate, a rechargeable battery and a T-shaped plug-in plate, a dovetail-shaped chute is provided on the bottom surface of the sliding support plate, eight rechargeable batteries are installed on the upper surface of the sliding support plate, and The rechargeable battery is electrically connected to the control board through the overcurrent protection device, and the control board is electrically connected to the wire connector; two T-shaped plug boards are arranged on the rear side of the sliding support board, and each T-shaped plug board Rectangular sockets are provided on the rear side of the end face.

Optionally, when the battery assembly and the storage box are in the installed state, the dovetail-shaped chute on the sliding support plate is slidably connected to the dovetail-shaped slide bar inside the storage box, and the rear ends of the two T-shaped boards pass through Accommodate the rear side wall of the box body, and the rectangular sockets on the two T-shaped plug-in boards will be plugged with the lower ends of the two plug-in strips respectively.

Optionally, when the shielding plate is in the closed state, the two buckle parts are engaged with the rectangular bayonet sockets on the locking plate, and the circular magnet will be magnetically attracted to the metal limiting plate.

Compared with prior art, the beneficial effect of the present invention is:

1. the welding device of each embodiment of the present invention, compared with traditional welding device, it is by the setting of accommodating box body and battery assembly, when hot tin, by the control switch on the control board is opened, two selenium carbon sticks During the whole use process, since the welding device has its own power supply, it does not need to be connected to an external power supply during tinning, thus avoiding the need for the welding device to The use of 220V AC is limited, and the structure is simple, easy to manufacture, and low in price, and the setting of the accommodating box and the strap makes the welding device more convenient to carry, so it is suitable for welding in various occasions. It is simple and labor-saving, and the operation is safe and reliable; After hot tin treatment, it can avoid the occurrence of faults caused by poor contact of the line, and protect the interests and economic development of power supply enterprises and electricity customers;

2. After testing, after using this welding device to weld the line, the number of failures at the connection point of the line is reduced from 78 times/year to 43 times/year, and the average reduction of one failure can reduce the power outage time by 3.45 hours, which is equivalent to more Electricity sales 105*3.45＝362.25 kWh (calculated based on average kWh/hour), increase operating income by about 362.25*0.6496＝235.32 (calculated based on the average electricity price of 0.6496 yuan/kWh), save 33.45 hours of man-hours, save 669 man-hours Therefore, every reduction in failure is equivalent to an increase in income of more than 900 yuan, thereby greatly reducing the maintenance time of line outages, protecting the interests of electricity customers, gaining trust and praise from users, and establishing a good image of power supply companies in the society.

3. Through the setting of the shielding component, during maintenance, press the two buckles in opposite directions, then slide the shielding plate to the right to remove it, and then pull the lifting rod upwards to make the two pull Pull up the two sliding blocks and the two plug-in bars respectively, then slide the sliding support plate and the rechargeable battery forward to remove them, and then perform maintenance on the rechargeable battery. During the whole maintenance process, due to There is no need to disassemble a large number of bolts and other fasteners through tools, thereby improving the convenience of maintenance of the welding device.

4. Through the setting of the blowing mechanism, while the micro motor is operating, the driving pulley drives the driven pulley to rotate through the belt, so that the reciprocating screw rod rotates, and then the screw nut drives the cleaning brush under the action of the reciprocating screw rod rotation. Reciprocating movement left and right, so that the right side of the filter screen at the right end of the air intake hood is automatically cleaned, effectively improving the blockage of the filter screen at the right end of the air intake hood, thereby improving the air intake effect of the filter screen at the right end of the air intake hood.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below.

The drawings in the following description only relate to some embodiments of the present invention, but do not limit the present invention.

In the attached picture:

Figure 1 shows a schematic diagram of a front isometric view of a welding device according to an embodiment of the invention;

Figure 2 shows a schematic diagram of a rear isometric view of a welding device according to an embodiment of the invention;

Fig. 3 shows a schematic diagram of a welding device in a disassembled state according to an embodiment of the present invention;

Figure 4 shows a schematic diagram of a hand-held weldment according to an embodiment of the present invention;

Fig. 5 shows a schematic diagram of a partial section of a slide rail according to an embodiment of the present invention;

Fig. 6 shows a schematic diagram of a shielding plate and a clamping plate according to an embodiment of the present invention;

Figure 7 shows a schematic diagram of a blower mechanism according to an embodiment of the present invention;

Fig. 8 shows a schematic diagram with a cross-section of a blowing hood B, an air inlet hood and a U-shaped support plate according to an embodiment of the present invention;

Fig. 9 shows a schematic diagram of a detached state of the limiting part according to an embodiment of the present invention;

Fig. 10 shows a schematic diagram of a partial section of the containing box according to an embodiment of the present invention.

List of reference signs

1. Housing box; 101. Support plate; 102. Strap; 103. Control panel; 104. Overcurrent protection device; 105. Wire connector; 106. E-type port; 2. Hand-held welding parts; ; 202, strip-shaped copper block; 203, current wire; 204, selenium carbon rod; 3, shielding assembly; 301, shielding plate; 302, slide rail; Fastener; 306, circular magnet; 4, blowing mechanism; 401, blowing cover A; 402, blowing cover B; 403, air intake cover; 404, micro motor; 405, blowing fan; 5, cleaning part; 501, 匚Glyph support plate; 502, reciprocating screw rod; 503, cleaning brush; 504, screw nut; 6, limit part; 601, frame-shaped sliding bracket; 602, sliding block; ; 7, battery assembly; 701, sliding support plate; 702, rechargeable battery; 703, T-shaped plug-in plate.

Detailed ways

In order to make the purpose, solution and advantages of the technical solution of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. Unless otherwise specified, terms used herein have their ordinary meanings in the art. The same reference numerals in the figures represent the same parts.

Example: Please refer to Figure 1 to Figure 10:

The present invention proposes a portable carbon resistance welding device, comprising: a housing box 1; a rectangular opening is opened at the lower part of the front end of the housing box 1, and a shield assembly 3 is installed outside the rectangular opening on the front end of the housing box 1; The right end surface of the box body 1 is provided with an E-shaped port 106 for installing the blower cover A401, and the right end surface of the containing box body 1 is located at the E-shaped port 106. A blowing mechanism 4 is provided, and the right end of the blowing mechanism 4 is provided with a cleaning part 5. The rear end surface of the storage box 1 is equipped with a limiting part 6, and the inner bottom surface of the storage box 1 is equipped with a battery assembly 7, which is used to provide power for the hand-held welding piece 2; the inside of the storage box 1 is fixed with a support plate 101, and the support plate A control board 103 and an overcurrent protection device 104 are installed on the left side of the upper end surface of 101, and a control switch is arranged on the control board 103, a wire connector 105 is arranged in the middle of the upper end surface of the support plate 101, and a Hold the welding part 2, the rear end of the storage box 1 is provided with a strap 102, which facilitates the transportation of the storage box 1, the inner bottom of the storage box 1 is provided with a dovetail-shaped slide bar, and the wire connector 105 is provided with two connection sockets , the upper box opening of the containing box body 1 is provided with a box cover through the hinge rotation, and the upper end surface of the box cover is provided with a handle, which is convenient for carrying the box body 1; the hand-held welding part 2 includes insulating pliers 201, strip-shaped copper blocks 202, Current wire 203 and selenium carbon rod 204, a bar-shaped copper block 202 is fixed on the front and rear sides of the right end of the insulating pliers 201, and a current wire 203 is connected to the back of the two bar-shaped copper blocks 202; Selenium carbon rods 204 are arranged on opposite surfaces of 202, and joints are arranged at the other ends of the two current wires 203.

In addition, according to the embodiment of the present invention, as shown in FIG. 1 , FIG. 4 and FIG. 5 , the shielding assembly 3 includes a shielding plate 301 , a slide rail 302 , a metal limiting plate 303 and a buckle 305 , and the upper and lower sides of the shielding plate 301 Bar-shaped sliders are provided, and a slide rail 302 fixed on the front end of the receiving box body 1 is slid on the outside of each bar-shaped slider; The metal limiting plate 303, and the middle part of the left end surface of the metal limiting plate 303 is provided with two rectangular sliding openings, each rectangular sliding opening has a buckle 305 sliding inside, and a spring is installed inside each rectangular sliding opening, Thus, the buckle 305 has better elasticity; the blocking assembly 3 also includes a clipping plate 304 and a circular magnet 306, the clipping plate 304 is fixed on the left side of the front end of the shielding plate 301, and the middle part of the left end of the clipping plate 304 A rectangular bayonet is provided for snapping with the buckle 305; the left end surface of the snap-in plate 304 is vertically symmetrical with two rectangular grooves, and three circular magnets 306 are arranged inside each rectangular groove ; When the shielding plate 301 is in the closed state, the two buckle parts 305 are engaged with the rectangular bayonet on the clamping plate 304, and the circular magnet 306 will be magnetically attracted to the metal limiting plate 303 to raise the metal limiting plate 303 The firmness when connecting with the clamping plate 304;

As shown in Figures 1 and 7, the blowing mechanism 4 includes a blowing cover A401, a blowing cover B402, an air intake cover 403, a micro motor 404 and a blowing fan 405, and the blowing cover A401 is an E-shaped shell structure, and the blowing cover A401 is fixed on Inside the E-shaped port 106, the right side of the blower cover A401 is connected to the blower cover B402 through a connecting pipe, and the right end of the blower cover B402 is provided with an air inlet cover 403, and a filter screen is installed at the air inlet at the right end of the air intake cover 403 to avoid external debris The left end of the blowing cover A401 is uniformly provided with a blowing hole; the inside of the blowing cover 403 is connected with a blowing fan 405 through the rotating shaft support, which is used to deliver air to the inside of the blowing cover 403, and the front end of the rotating shaft on the blowing fan 405 The first bevel gear is provided, and the micromotor 404 is fixedly installed on the rear side of the air intake hood 403, and the rotating shaft on the micromotor 404 runs through the rear side of the air intake hood 403, and the front end of the rotating shaft on the micromotor 404 is provided with the first bevel gear. The second bevel gear meshed, the external rotating shaft on the micro motor 404 is provided with a driving pulley, and the micro motor 404 is electrically connected with the control board 103;

As shown in Figures 1 and 8, the cleaning part 5 includes a U-shaped support plate 501, a reciprocating screw rod 502, a cleaning brush 503, and a screw nut 504. The U-shaped support plate 501 is fixed outside the air inlet cover 403, and the U-shaped The inside of the support plate 501 is rotatably connected with a reciprocating screw rod 502, and the inside of the U-shaped support plate 501 is provided with a guide rod, and a cleaning brush 503 slides outside the guide rod for cleaning the surface of the filter screen on the air inlet cover 403; The inside of the brush 503 is fixedly inlaid with a screw nut 504, and the screw nut 504 is threadedly connected with the reciprocating screw mandrel 502, and the bristles on the cleaning brush 503 are in contact with the right side of the filter screen on the air inlet cover 403, and after the reciprocating screw mandrel 502 There is a driven pulley at the end, and the driven pulley is connected to the driving pulley through a belt, and the diameter of the driven pulley is three times the diameter of the driving pulley, so that there is a gap between the driving pulley and the driven pulley. A certain transmission ratio, so that the driving pulley drives the driven pulley to rotate more labor-saving;

As shown in Figure 2 and Figure 9, the limiting part 6 includes a frame-shaped sliding bracket 601, a sliding block 602, a pull rod 603 and a plug-in strip 604, the number of frame-shaped sliding brackets 601 is two, and the two frame-shaped sliding brackets 601 The brackets 601 are all fixed on the lower part of the rear end surface of the housing box body 1, and a sliding block 602 is slid inside each frame-shaped sliding bracket 601, and the lower end of each sliding block 602 is provided with a plug-in connection through the bottom of the frame-shaped sliding bracket 601. The strip 604, the corners on the front side of the bottom end of the plug-in strip 604 are set as rounded corners, so that when the sliding support plate 701 is installed to the inside of the receiving box body 1, it is not necessary to pull the lifting rod upward; the upper end of each sliding block 602 is provided with a penetrating A pulling rod 603 on the top of the frame-shaped sliding bracket 601, and each pulling rod 603 is located outside the frame-shaped sliding bracket 601 and is sleeved with a spring so that the sliding block 602 has downward elasticity. There is a lifting rod fixed between them;

As shown in Figure 3 and Figure 10, the battery assembly 7 includes a sliding support plate 701, a rechargeable battery 702 and a T-shaped plug-in plate 703, the bottom surface of the sliding support plate 701 is provided with a dovetail chute, and the upper end surface of the sliding support plate 701 is installed with Eight rechargeable batteries 702, and the rechargeable batteries 702 are electrically connected to the control board 103 through the overcurrent protection device 104, and the control board 103 is electrically connected to the wire connector 105; the rear side of the sliding support plate 701 is provided with two T Type plug-in board 703, and each T-type plug-in board 703 has a rectangular socket on the rear side of the upper end surface, which is used for plugging with the plug-in strip 604; The dovetail-shaped chute on the plate 701 is slidingly connected with the dovetail-shaped sliding bar inside the storage box 1, and the rear ends of the two T-shaped inserts 703 run through the rear side wall of the storage box 1, and the two T-shaped inserts 703 are The rectangular sockets will be plugged with the lower ends of the two plug strips 604 respectively, so that the sliding support plate 701 can be effectively fixed inside the receiving box body 1 .

The specific usage and function of this embodiment: in the present invention, when in use, the welding device is first transported to the field use position through the strap 102, then the hand-held welding part 2 is taken out after opening the box cover, and then the two current wires The joints on the 203 are respectively connected to two connecting sockets on the lead connector 105, and then the control switch on the control panel 103 is opened to generate high temperature between the two selenium carbon rods 204, and then the cable head and the wire end are carried out. Hot tin treatment can be;

When the control switch on the control board 103 is turned on, the micro motor 404 starts to operate, and then the blowing fan 405 is driven to rotate through the first bevel gear and the second bevel gear, so that the external air enters the air intake hood after being filtered by the filter screen 403 inside, and then enter the inside of the blowing cover A401 through the blowing cover B402, and then blow the air evenly to the rechargeable battery 702 inside the housing box 1 through the blowing holes on the blowing cover A401, so that the rechargeable battery The 702 has an effective heat dissipation effect, thereby improving the service life of the rechargeable battery 702;

When the welding device is being maintained, firstly press the two buckle parts 305 to the opposite direction manually so that the two buckle parts 305 lose the engagement relationship with the rectangular bayonet on the buckle plate 304, and then the shielding plate 301 Slide to the right to take it off, and then pull the pull rod upwards, so that the two pull rods 603 respectively pull the two sliding blocks 602 and the two insertion strips 604 upwards, so that the two insertion strips 604 are respectively pulled from the Pull out the rectangular sockets on the two T-shaped inserts 703, then slide the sliding support plate 701 and the rechargeable battery 702 forward to remove, and then maintain the rechargeable battery 702.

Finally, it should be noted that when the present invention describes the position of each component and the cooperation relationship between them, it usually takes one/a pair of components as an example, but those skilled in the art should understand that such a position , coordination relationship, etc., are also applicable to other components/other paired components.

The above descriptions are only exemplary implementations of the present invention, and are not intended to limit the protection scope of the present invention, which is determined by the appended claims.

Claims (1)

1. The portable carbon resistance welding device is characterized by comprising a containing box body (1);

a rectangular through hole is formed in the lower portion of the front end face of the accommodating box body (1), and a shielding assembly (3) is arranged outside the rectangular through hole on the front end face of the accommodating box body (1);

e-shaped through holes (106) are formed in the right end face of the accommodating box body (1), a blowing mechanism (4) is arranged at the position, located at the E-shaped through holes (106), of the right end face of the accommodating box body (1), a cleaning part (5) is arranged at the right end of the blowing mechanism (4), a limiting part (6) is arranged on the rear end face of the accommodating box body (1), and a battery assembly (7) is arranged on the bottom end face inside the accommodating box body (1);

the novel box comprises a containing box body (1), wherein a supporting plate (101) is fixed inside the containing box body (1), a control plate (103) and an overcurrent protection device (104) are installed on the left side of the upper end face of the supporting plate (101), a control switch is arranged on the control plate (103), a wire connecting piece (105) is arranged in the middle of the upper end face of the supporting plate (101), a handheld welding piece (2) is placed on the right side of the upper end face of the supporting plate (101), a brace (102) is arranged on the rear end face of the containing box body (1), a dovetail-shaped sliding strip is arranged on the bottom end face inside the containing box body (1), two connecting sockets are arranged on the wire connecting piece (105), a box cover is rotated at the box opening of the upper part of the containing box body (1) through a hinge, and a handle is arranged on the upper end face of the box cover;

the handheld welding piece (2) comprises an insulating clamp (201), strip-shaped copper blocks (202), current wires (203) and selenium carbon rods (204), wherein the front side surface and the rear side surface of the right end of the insulating clamp (201) are respectively fixed with one strip-shaped copper block (202), and the back surfaces of the two strip-shaped copper blocks (202) are respectively connected with one current wire (203); the opposite surfaces of the two strip-shaped copper blocks (202) are provided with selenium carbon rods (204), and the other ends of the two current wires (203) are provided with connectors;

the shielding assembly (3) comprises a shielding plate (301), sliding rails (302), a metal limiting plate (303) and a buckle piece (305), strip-shaped sliding blocks are arranged on the upper side surface and the lower side surface of the shielding plate (301), and one sliding rail (302) fixed on the front end face of the accommodating box body (1) is arranged outside each strip-shaped sliding block in a sliding mode; the left ends of the two sliding rails (302) are provided with metal limiting plates (303) fixed on the front end face of the accommodating box body (1), the middle part of the left end face of each metal limiting plate (303) is provided with two rectangular sliding openings, one clamping piece (305) slides in each rectangular sliding opening, and a spring is arranged in each rectangular sliding opening;

the shielding assembly (3) further comprises a clamping plate (304) and a round magnet (306), the clamping plate (304) is fixed at the left part of the front end surface of the shielding plate (301), and a rectangular bayonet is formed in the middle of the left end surface of the clamping plate (304); two rectangular grooves are formed in the left end face of the clamping plate (304) in an up-down symmetrical mode, and three circular magnets (306) are arranged in each rectangular groove;

the air blowing mechanism (4) comprises an air blowing cover A (401), an air blowing cover B (402), an air inlet cover (403), a micro motor (404) and an air blowing fan (405), wherein the air blowing cover A (401) is of an E-shaped shell structure, the air blowing cover A (401) is fixed inside an E-shaped through hole (106), the air blowing cover B (402) is connected to the right side of the air blowing cover A (401) through a communicating pipe, the air inlet cover (403) is arranged at the right end of the air blowing cover B (402), a filter screen is arranged at an air inlet at the right end of the air inlet cover (403), and air blowing holes are uniformly formed in the left end face of the air blowing cover A (401); the inside of the air inlet cover (403) is rotationally connected with an air blowing fan (405) through a rotating shaft bracket, a first bevel gear is arranged at the front end of a rotating shaft on the air blowing fan (405), a micro motor (404) is fixedly arranged at the rear side of the air inlet cover (403), the rotating shaft on the micro motor (404) penetrates through the rear side of the air inlet cover (403), a second bevel gear meshed with the first bevel gear is arranged at the front end of the rotating shaft on the micro motor (404), a driving belt pulley is arranged outside the rotating shaft on the micro motor (404), and the micro motor (404) is electrically connected with a control board (103);

the cleaning part (5) comprises a -shaped support plate (501), a reciprocating screw rod (502), a cleaning brush (503) and a screw rod nut (504), wherein the -shaped support plate (501) is fixed outside the air inlet cover (403), the reciprocating screw rod (502) is rotationally connected inside the -shaped support plate (501), a guide rod is arranged inside the -shaped support plate (501), and the cleaning brush (503) slides outside the guide rod; a feed screw nut (504) is fixedly embedded in the cleaning brush (503), the feed screw nut (504) is in threaded connection with a reciprocating feed screw (502), bristles on the cleaning brush (503) are in contact with the right side surface of a filter screen on an air inlet cover (403), a driven belt pulley is arranged at the rear end of the reciprocating feed screw (502), the driven belt pulley is in transmission connection with a driving belt pulley through a belt, and the diameter of the driven belt pulley is three times that of the driving belt pulley;

the limiting part (6) comprises two frame-shaped sliding supports (601), sliding blocks (602), pulling rods (603) and inserting strips (604), wherein the two frame-shaped sliding supports (601) are fixed at the lower part of the rear end face of the accommodating box body (1), one sliding block (602) is arranged in each frame-shaped sliding support (601) in a sliding mode, one inserting strip (604) penetrating through the bottom of the frame-shaped sliding support (601) is arranged at the lower end of each sliding block (602), and the front side edges of the bottom ends of the inserting strips (604) are round corners; the upper end of each sliding block (602) is provided with a pulling rod (603) penetrating through the top of the frame-shaped sliding support (601), the outside of each pulling rod (603) is positioned inside the frame-shaped sliding support (601) and is sleeved with a spring, and a lifting rod is fixed between the upper ends of the two pulling rods (603);

the battery assembly (7) comprises a sliding support plate (701), rechargeable batteries (702) and a T-shaped plugboard (703), wherein a dovetail-shaped chute is formed in the bottom end surface of the sliding support plate (701), eight rechargeable batteries (702) are mounted on the upper end surface of the sliding support plate (701), the rechargeable batteries (702) are electrically connected with the control board (103) through the overcurrent protection device (104), and the control board (103) is electrically connected with the lead connecting piece (105); two T-shaped plugboards (703) are arranged on the rear side of the sliding support plate (701), and rectangular sockets are formed on the rear side of the upper end face of each T-shaped plugboard (703);

when the battery assembly (7) and the accommodating box body (1) are in an installation state, the dovetail-shaped sliding grooves on the sliding support plates (701) are in sliding connection with the dovetail-shaped sliding strips in the accommodating box body (1), the rear ends of the two T-shaped inserting plates (703) penetrate through the rear side wall of the accommodating box body (1), and the rectangular inserting holes on the two T-shaped inserting plates (703) are respectively inserted into the lower ends of the two inserting strips (604);

when the shielding plate (301) is in a closed state, the two clamping pieces (305) are clamped with the rectangular bayonets on the clamping plate (304), and the round magnets (306) are magnetically attracted with the metal limiting plate (303).