Multi-port programmable modularized direct-current power supply detection device

Abstract

The invention relates to the field of direct-current power supply detection, in particular to a multi-port programmable modularized direct-current power supply detection device, which comprises a connecting component, a direct-current power supply detector, an interface arranged on the direct-current power supply detector, a connector arranged on the outer side of the interface and a first protective sleeve arranged on the outer side of the connector, the first protective sleeve is arranged on the connector, the L-shaped rod is arranged on the first protective sleeve, the second protective sleeve is arranged on the outer side of the connector, and the dustproof piece is arranged in the second protective sleeve. The protection component comprises a gear tooth assembly arranged on the second protection sleeve, a shifting assembly arranged on the gear tooth assembly, a guide assembly arranged on the gear tooth assembly and a sealing assembly arranged on the guide assembly; the anti-loosening part comprises a telescopic assembly arranged in the L-shaped rod and an air guide assembly arranged on the telescopic assembly, and the device can prevent dust of the interface of the direct-current power source detector and can prevent loosening between the connector and the interface.

Description

Technical Field

[0001] The invention relates to the field of direct current power supply detection, in particular to a multi-port programmable modular direct current power supply detection device. Background Art

[0002] A DC power supply is a device that maintains a steady voltage and current in a circuit. When a DC power supply is shipped from the factory or undergoes regular maintenance, it is necessary to perform a discharge test on the DC power supply. This requires the use of a DC power supply detector. When in use, simply connect the DC power supply to the interface on the DC power supply detector through a wire for automatic detection. Multiple ports are provided on the DC power supply detector, and through programmable modular control, a single or multiple DC power supplies can be tested simultaneously.

[0003] During use, the existing wire is provided with two connectors, one connected to the DC power supply, and the other connected to the interface on the DC power supply detector. During the connector insertion process, the following problems exist: After the connector is inserted into the interface, its position is limited mainly by the damping between the connector and the interface. After multiple plugging and unplugging, the damping between the connector and the interface weakens, which can easily cause the connector and the interface to loosen, affecting the test results.

[0004] The interface on the existing DC power supply detector is basically exposed. When the interface is not in use, dust is likely to enter the interface. Therefore, after the connector and the interface are plugged together next time, static electricity and dust may affect the detection result. Summary of the invention

[0005] In view of the problems in the above or prior art that after multiple plugging and unplugging, the connector and the interface are easily loosened, and the interface on the existing DC power supply detector is exposed and easily infiltrated with dust, thereby affecting data transmission and affecting the detection results, the present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including a connecting component, including a DC power detector, an interface arranged on the DC power detector, a joint arranged on the outside of the interface, a first protective cover arranged on the outside of the joint, an L-shaped rod arranged on the first protective cover, a second protective cover arranged on the outside of the interface, and a dustproof sheet arranged in the second protective cover; a protective component, including a gear assembly arranged on the second protective cover, a toggle assembly arranged on the gear assembly, a guide assembly arranged on the gear assembly, and a closing assembly arranged on the guide assembly; an anti-loosening component, including a telescopic assembly arranged in the L-shaped rod, an air guide assembly arranged on the telescopic assembly, an abutment assembly arranged on the air guide assembly, and a one-way assembly arranged on the abutment assembly.

[0007] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the gear tooth assembly includes a first circular ring fixedly connected to the second protective cover, the first circular ring is provided with an annular groove, the first circular ring is fixedly connected to an extension shell, the extension shell is connected to the annular groove through an arc-shaped opening, a rotating shaft is rotatably connected in the extension shell, a first gear is fixedly connected to the rotating shaft, and a second gear meshing with the first gear is provided in the annular groove.

[0008] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the toggle assembly includes a first circular opening arranged on the extension shell, the rotating shaft is provided with a second circular opening with a diameter smaller than the first circular opening, the L-shaped rod is provided with a mounting groove, the mounting groove is sealingly and slidably connected with a piston, the piston is fixedly connected with a lifting rod, the lifting rod is fixedly connected to the toggle rod, and the piston is elastically connected to the inner wall of the mounting groove through a first spring.

[0009] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the guide component includes a first vertical groove arranged on the second circular mouth, the first vertical groove is connected to a first arc-shaped groove, the first arc-shaped groove is connected to a second vertical groove, and the shift rod cooperates with the first vertical groove, the second vertical groove, and the first arc-shaped groove.

[0010] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the closed component includes a second ring fixedly connected to the lower end of the second gear, a guide block is fixedly connected to the second ring, a guide groove matching the guide block is provided in the annular groove, a plurality of second arc grooves are provided on the second ring, a cylinder slides in the second arc groove, a fan-shaped plate is fixedly connected to the cylinder, the fan-shaped plate is fixedly connected to the dustproof sheet, and a plurality of incisions matching the dustproof sheet are provided on the second ring.

[0011] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: when the upper ends of multiple dustproof plates abut against each other, the interface is sealed, the outer ends of multiple dustproof plates extend to the outside of the second protective cover, the distance between multiple second arc grooves and the inner circle of the second circular ring increases successively in the clockwise direction, and the distance between multiple incisions and the dustproof sheet increases successively in the clockwise direction along the second circular ring.

[0012] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the air guide component includes an air guide cavity arranged on the installation groove, an annular cavity is arranged in the first protective cover, the first protective cover is provided with a plurality of bearing grooves cooperating with the dustproof sheet, and the bearing groove is provided with a card slot.

[0013] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the abutment assembly includes an extension plate fixedly connected to the dustproof plate, and the sliding seal in the card slot is slidably connected with a T-shaped card block, the card block is elastically connected to the inner wall of the card slot through a second spring, and the annular cavity is connected to the card slot through a pump air hole.

[0014] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the one-way component includes a strip-shaped opening arranged on the card block, the strip-shaped opening is provided with a strip-shaped groove, a transmission shaft is rotatably connected in the strip-shaped groove, a torsion spring is provided on the transmission shaft, and a wedge block cooperating with the expansion piece is fixedly connected to the transmission shaft.

[0015] As a preferred solution of the multi-port programmable modular DC power supply detection device of the present invention, wherein: the exhaust component includes an exhaust pipe arranged on the air guide cavity, and a valve is provided on the exhaust pipe.

[0016] The beneficial effects of the multi-port programmable modular DC power supply detection device of the present invention are as follows: by setting connecting components and protective components, when the interface is not in use, multiple dustproof sheets can be closed to automatically seal the interface to prevent dust from entering the interface, and before the connector is inserted, the dustproof sheets can be automatically separated without affecting the insertion of the connector, and an anti-loosening component is also provided. After the connector is inserted into the interface, the expansion sheet on the dustproof sheet cooperates with the wedge block to prevent the expansion sheet from being separated from the first protective cover, thereby maintaining the stability of the connection between the connector and the interface, thereby solving the problem that after multiple plugging and unplugging, the connector and the interface are easily loosened, and the interface on the existing DC power supply detector is exposed and easily dusty, thereby affecting data transmission and affecting the detection results, thereby achieving the effect of dustproofing the interface of the DC power supply detector and being able to limit the position between the connector and the interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the external structure of a multi-port programmable modular DC power supply detection device.

[0019] Figure 2 This is a schematic diagram of the external structure of the toggle component of the multi-port programmable modular DC power supply detection device.

[0020] Figure 3It is a schematic diagram of the first circular ring cross-sectional structure of a multi-port programmable modular DC power supply detection device.

[0021] Figure 4 for Figure 3 A schematic diagram of the enlarged structure.

[0022] Figure 5 This is a schematic diagram of the bottom structure of the second circular ring of a multi-port programmable modular DC power supply detection device.

[0023] Figure 6 A cross-sectional view of the enclosed components of a multi-port programmable modular DC power supply detection device.

[0024] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at B.

[0025] Figure 8 A cross-sectional view of the air guide component of a multi-port programmable modular DC power supply detection device.

[0026] Fig. 9 for Figure 8 Enlarged schematic diagram of the structure at location C.

[0027] Fig.10 The present invention is a schematic diagram of the cross-sectional structure of a unidirectional component of a multi-port programmable modular DC power supply detection device.

[0028] In the figure: 100, connecting component; 101, DC power supply detector; 102, interface; 103, connector; 104, first protective cover; 105, L-shaped rod; 106, second protective cover; 107, dust sheet; 200, protective component; 201, gear assembly; 201a, first ring; 201b, annular groove; 201c, extension shell; 201d, rotating shaft; 201e, first gear; 201f, second gear; 202, toggle assembly; 202a, first round mouth; 202b, second round mouth; 202c, mounting groove; 202d, piston; 202e, lifting rod; 202f, toggle rod; 202g, first spring; 203, guide assembly; 203a, first vertical groove; 203b, first arc groove; 203d, second arc groove; 203e, first vertical groove; 203e, second arc groove; 203f, second arc groove; 203e, first vertical ... 03c, second vertical groove; 204, closing component; 204a, second circular ring; 204b, guide block; 204c, guide groove; 204d, second arc groove; 204e, cylinder; 204f, fan-shaped plate; 204g, incision; 300, anti-loosening component; 301, air guide component; 301a, air guide cavity; 301b, annular cavity; 301c, bearing groove; 301d, clamping groove; 302, abutting component; 302a, expansion piece; 302b, clamping block; 302c, second spring; 302d, pump air hole; 303, one-way component; 303a, strip mouth; 303b, strip groove; 303c, torsion spring; 303d, wedge block; 304, exhaust component; 304a, exhaust pipe; 304b, valve. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figures 1 to 8, which is the first embodiment of the present invention, provides a multi-port programmable modular DC power detection device, which can achieve the effect of automatically closing the interface 102 when the DC power detector 101 is not in use, and automatically opening the interface 102 when the connector 103 is inserted into the interface 102, and comprises a connecting component 100, including a DC power detector 101, an interface 102 arranged on the DC power detector 101, a connector 103 arranged outside the interface 102, a first protective cover 104 arranged outside the connector 103, an L-shaped rod 105 arranged on the first protective cover 104, and an L-shaped rod 106 arranged on the interface 102. 2, and a dustproof sheet 107 arranged in the second protective cover 106; the protective component 200 includes a gear assembly 201 arranged on the second protective cover 106, a toggle assembly 202 arranged on the gear assembly 201, a guide assembly 203 arranged on the gear assembly 201, and a closing assembly 204 arranged on the guide assembly 203; the anti-loosening component 300 includes a telescopic assembly arranged in the L-shaped rod 105, an air guide assembly 301 arranged on the telescopic assembly, a contact assembly 302 arranged on the air guide assembly 301, and a one-way assembly 303 arranged on the contact assembly 302.

[0031] Specifically, the DC power detector 101 here is provided with a plurality of interfaces 102 to form a multi-port detection, and through a programmable modular setting, it can realize individual measurement and multiple joint detections. A wire is connected to the outside of the first package sleeve here. The above is the prior art and will not be elaborated here.

[0032] Further, the gear assembly 201 includes a first ring 201a fixedly connected to the second protective cover 106, the first ring 201a is provided with an annular groove 201b, the first ring 201a is fixedly connected with an extension shell 201c, the extension shell 201c is connected with the annular groove 201b through an arc-shaped opening, a rotating shaft 201d is rotatably connected in the extension shell 201c, the rotating shaft 201d is fixedly connected with a first gear 201e, and the annular groove 201b is provided with a second gear 201c meshing with the first gear 201e. 1f; the toggle assembly 202 includes a first circular opening 202a arranged on the extension shell 201c, a second circular opening 202b with a diameter smaller than the first circular opening 202a is provided on the rotating shaft 201d, a mounting groove 202c is provided on the L-shaped rod 105, a piston 202d is sealingly and slidably connected in the mounting groove 202c, a lifting rod 202e is fixedly connected to the piston 202d, the lifting rod 202e is fixedly connected to the toggle rod 202f, and the piston 202d is elastically connected to the inner wall of the mounting groove 202c through a first spring 202g.

[0033] It should be noted that damping is provided on the rotating shaft 201d here, and self-rotation will not occur. In order to prevent the piston 202d from being unable to move due to air pressure problems, an exhaust port is also provided on the mounting groove 202c (there is no exhaust port in Example 2).

[0034] Preferably, the guide assembly 203 includes a first vertical groove 203a arranged on the second circular opening 202b, the first vertical groove 203a is connected to a first arc groove 203b, the first arc groove 203b is connected to a second vertical groove 203c, the lever 202f cooperates with the first vertical groove 203a, the second vertical groove 203c and the first arc groove 203b; the closing assembly 204 includes a second circular ring 204a fixedly connected to the lower end of the second gear 201f, the second circular ring 204a is fixedly connected to a guide block 204b, the annular groove 201b is provided with a guide groove 204c that cooperates with the guide block 204b, and the second circular ring 204a is provided with a plurality of first There are two arc-shaped grooves 204d, a cylinder 204e slides in the second arc-shaped groove 204d, a fan-shaped plate 204f is fixedly connected to the cylinder 204e, the fan-shaped plate 204f is fixedly connected to the dust-proof plate 107, and a plurality of cutouts 204g cooperating with the dust-proof plates are provided on the second ring 204a; when the upper ends of the plurality of dust-proof plates abut against each other, the interface 102 is sealed, and the outer ends of the plurality of dust-proof plates extend to the outside of the second protective cover 106, and the distance between the plurality of second arc-shaped grooves 204d and the inner circle of the second ring 204a increases successively in the clockwise direction, and the distance between the plurality of cutouts 204g and the dust-proof plate 107 increases successively in the clockwise direction along the second ring 204a.

[0035] It should be noted that when the lever 202f cooperates with the first arc-shaped groove 203b, the shaft 201d can be driven to deflect. At the same time, a damper is provided on the shaft 201d to prevent the shaft 201d from rotating. The multiple cutouts 204g are provided to prevent the dust sheet 107 from getting stuck with the second ring 204a. The guide block 204b and the guide groove 204c are both annular, so that the second ring 204a can be guided to prevent the second ring 204a from tilting when rotating. The teeth on the second gear 201f will not interfere with the guide block 204b. The fan-shaped plate 204f is slidably connected to the inner wall of the annular groove 201b. A slider can be set on the fan-shaped plate 204f, and a slide groove can be set in the annular groove 201b to ensure the translation of the fan-shaped plate 204f. The design of the lifting rod 202e, the piston 202d, and the mounting groove 202c allows the lifting rod 202e to be retracted into the mounting groove 202c, so that when the lifting rod 202e is against the DC power supply detector 101, it will not get stuck. At the same time, the first spring 202g is elastic enough, and when the lever 202f cooperates with the first arc groove 203b, the lever 202f will not move.

[0036] When in use, when the interface 102 is not in use, the upper ends of the multiple dustproof plates are abutted against each other to block the interface 102, so that the interface 102 can be dustproof. When the interface 102 needs to be used, first, the lever 202f on the L-shaped rod 105 is aligned with the first vertical groove 203a. The outer end of the L-shaped rod 105 here extends to the outside of the joint 103, so that it can enter the second circular opening 202b before the joint 103, and then the joint 103 is pushed to make the lever 202f cooperate with the first vertical groove 203a to guide the joint 103. Continuing the movement will allow the lever 202f to enter the first arc groove 203b, causing the rotating shaft 201d to deflect counterclockwise (when viewed from the direction of looking down at the rotating shaft 201d, the same below), causing the first gear 201e to rotate counterclockwise, driving the second gear 201f to rotate clockwise, and the second ring 204a to rotate. At this time, the guide block 204b slides in the guide groove 204c to guide the second ring 204a, and then guides the second gear 201f. When the second ring 204a rotates, the arc groove cooperates with the cylinder 204e to drive the cylinder 204e to move toward the outer end of the first ring 201a, so that the multiple fan-shaped plates 204f move toward the outer end, so that the dustproof plate moves outward, so that the interface 102 opens. At this time, the lever 202f moves into the second vertical groove 203c. When it continues to be pushed, it will not cause the rotation shaft 201d to deflect, thereby ensuring the stability of the opening of the interface 102, so that the connector 103 can be smoothly inserted into the interface 102 until the connector 103 and the interface 102 are fully plugged in. When the connector 103 and the interface 102 need to be separated, the multiple dustproof sheets 107 can be reset by directly reversing the operation to close the interface 102.

[0037] In summary, by setting the connecting component 100 and the protective component 200, when the interface 102 is not in use, multiple dustproof plates automatically close the interface 102 to prevent dust from entering the interface 102, and when the connector 103 is inserted into the interface 102, the interface 102 can be automatically opened, which is convenient to use.

[0038] Example 2, reference Figures 1 to 10, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a multi-port programmable modular DC power supply detection device anti-loosening component 300, which solves the problem of how to prevent the connector 103 and the interface 102 from loosening, and includes an air guide component 301, including an air guide cavity 301a arranged on the installation groove 202c, an annular cavity 301b is arranged in the first protective cover 104, and a plurality of bearing grooves 301c cooperating with the dustproof sheet 107 are arranged on the first protective cover 104, and a card groove 301d is arranged on the bearing groove 301c; the abutment component 302 includes a fixed connection to the dustproof sheet 1 07, a T-shaped block 302b is slidably connected in a sliding seal in the slot 301d, the block 302b is elastically connected to the inner wall of the slot 301d through a second spring 302c, the annular cavity 301b is connected to the slot 301d through a pump air hole 302d, the one-way component 303 includes a strip opening 303a arranged on the block 302b, a strip groove 303b is arranged on the strip opening 303a, a transmission shaft is rotatably connected in the strip groove 303b, a torsion spring 303c is arranged on the transmission shaft, and a wedge block 303d matching the expansion piece 302a is fixedly connected to the transmission shaft.

[0039] Specifically, the installation groove 202c is set so that the lower end of the L-shaped rod 105 is open, so that when the piston 202d moves, it will not be stuck due to air pressure problems. In this embodiment, there is no need to provide an exhaust port in the installation groove 202c. The width of the expansion piece 302a is smaller than the width of the block 302b. The torsion spring 303c is elastic enough to ensure that the wedge block 303d can be reset. The bottom of the strip groove 303b here is against the lower end of the wedge block 303d, so that the wedge block 303d cannot move to the lower side of the block 302b.

[0040] When in use, when the lifting rod 202e contacts the DC power detector 101, the lifting rod 202e moves toward the mounting groove 202c, and the piston 202d moves toward the mounting groove 202c, pumping the gas in the mounting groove 202c into the annular cavity 301b through the gas guide cavity 301a, and then into the card groove 301d through the plurality of pump holes 302d, so that the card block 302b is pushed out into the bearing groove 301c, and then along with the expansion plate When 302a enters the bearing groove 301c, the expansion piece 302a is against the wedge block 303d, so that the wedge block 303d deflects upward. At this time, the transmission shaft rotates, and the torsion spring 303c gains elasticity. When the expansion piece 302a passes over the strip opening 303a, the wedge block 303d returns to its original position and blocks the lower side of the expansion piece 302a, preventing the expansion piece 302a from separating from the first protective sleeve, thereby preventing the connector 103 and the interface 102 from loosening.

[0041] In summary, by setting the anti-loosening component 300, after the connector 103 and the interface 102 are plugged in, the extension piece 302a can enter the supporting groove 301c so that the extension piece 302a and the rotating block are stuck, thereby preventing the extension piece 302a from being separated from the first protective cover, thereby maintaining the stability of the connection between the connector 103 and the interface 102.

[0042] Example 3, reference Figures 1 to 10 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides an exhaust component 304 of a multi-port programmable modular DC power supply detection device, which solves the problem of how to realize the disassembly between the connector 103 and the interface 102. It includes an exhaust component 304, including an exhaust pipe 304a arranged on the air guide cavity 301a, a valve 304b is arranged on the exhaust pipe 304a, and a valve stem is arranged on the valve 304b, so that the valve stem can be directly rotated.

[0043] During use, when it is necessary to disassemble the connector 103 and the interface 102, it is only necessary to rotate the valve stem on the valve 304b. At this time, the exhaust pipe 304a is exhausted, and the gas in the annular cavity 301b is discharged. Under the action of the second spring 302c, the block 302b is reset and retracted into the bearing groove 301c, thereby driving the wedge block 303d to retract into the bearing groove 301c. At this time, there is no limit at the lower end of the expansion piece 302a, and the first protective cover 104 can be directly pulled to disassemble the connector 103 and the interface 102.

[0044] In summary, by providing the exhaust assembly 304, when disassembling the connector 103 and the interface 102, it is only necessary to move the lever 202f and then pull the first protective cover 104 to disassemble the connector 103 and the interface 102, and the operation is convenient and quick.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-port programmable modular DC power supply detection device, characterized in that: include, A connecting component (100), comprising a DC power detector (101), an interface (102) arranged on the DC power detector (101), a joint (103) arranged outside the interface (102), a first protective sleeve (104) arranged outside the joint (103), an L-shaped rod (105) arranged on the first protective sleeve (104), a second protective sleeve (106) arranged outside the interface (102), and a dustproof sheet (107) arranged inside the second protective sleeve (106); The protective component (200) comprises a gear assembly (201) arranged on the second protective cover (106), a toggle assembly (202) arranged on the gear assembly (201), a guide assembly (203) arranged on the gear assembly (201), and a closing assembly (204) arranged on the guide assembly (203); The anti-loosening component (300) comprises an air guide component (301) arranged in the L-shaped rod (105), an abutment component (302) arranged on the air guide component (301), a one-way component (303) arranged on the abutment component (302), and an exhaust component (304) arranged on the L-shaped rod (105).

2. The multi-port programmable modular DC power supply detection device according to claim 1, characterized in that: The gear assembly (201) comprises a first circular ring (201a) fixedly connected to a second protective sleeve (106); an annular groove (201b) is provided on the first circular ring (201a); an extension shell (201c) is fixedly connected to the first circular ring (201a); the extension shell (201c) is connected to the annular groove (201b) via an arc-shaped opening; a rotating shaft (201d) is rotatably connected in the extension shell (201c); a first gear (201e) is fixedly connected to the rotating shaft (201d); and a second gear (201f) meshing with the first gear (201e) is provided in the annular groove (201b).

3. The multi-port programmable modular DC power supply detection device according to claim 2, characterized in that: The toggle assembly (202) comprises a first circular opening (202a) arranged on the extension shell (201c), a second circular opening (202b) having a smaller diameter than the first circular opening (202a) is arranged on the rotating shaft (201d), a mounting groove (202c) is arranged on the L-shaped rod (105), a piston (202d) is sealingly and slidably connected in the mounting groove (202c), a lifting rod (202e) is fixedly connected to the piston (202d), the lifting rod (202e) is fixedly connected to the toggle rod (202f), and the piston (202d) is elastically connected to the inner wall of the mounting groove (202c) via a first spring (202g).

4. The multi-port programmable modular DC power supply detection device according to claim 3, characterized in that: The guide assembly (203) comprises a first vertical groove (203a) arranged on the second circular opening (202b); the first vertical groove (203a) is connected to a first arcuate groove (203b); the first arcuate groove (203b) is connected to a second vertical groove (203c); the shifting rod (202f) cooperates with the first vertical groove (203a), the second vertical groove (203c) and the first arcuate groove (203b).

5. The multi-port programmable modular DC power supply detection device according to claim 4, characterized in that: The closure assembly (204) comprises a second circular ring (204a) fixedly connected to the lower end of the second gear (201f), a guide block (204b) fixedly connected to the second circular ring (204a), a guide groove (204c) cooperating with the guide block (204b) being provided in the annular groove (201b), a plurality of second arc grooves (204d) being provided on the second circular ring (204a), a cylinder (204e) sliding in the second arc groove (204d), a fan-shaped plate (204f) fixedly connected to the cylinder (204e), the fan-shaped plate (204f) being fixedly connected to the dustproof sheet (107), and a plurality of cutouts (204g) cooperating with the dustproof sheet being provided on the second circular ring (204a).

6. The multi-port programmable modular DC power supply detection device according to claim 5, characterized in that: When the upper ends of the plurality of dustproof plates abut against each other, the interface (102) is sealed, the outer ends of the plurality of dustproof plates extend to the outside of the second protective cover (106), the distances between the plurality of second arc-shaped grooves (204d) and the inner circle of the second circular ring (204a) increase in a clockwise direction, and the distances between the plurality of cutouts (204g) and the dustproof sheet (107) increase in a clockwise direction along the second circular ring (204a).

7. The multi-port programmable modular DC power supply detection device according to claim 6, characterized in that: The air guide component (301) comprises an air guide cavity (301a) arranged on the installation groove (202c), an annular cavity (301b) is arranged in the first protective sleeve (104), a plurality of bearing grooves (301c) cooperating with the dustproof sheet (107) are arranged on the first protective sleeve (104), and a clamping groove (301d) is arranged on the bearing groove (301c).

8. The multi-port programmable modular DC power supply detection device according to claim 7, characterized in that: The abutment assembly (302) comprises an expansion sheet (302a) fixedly connected to the dustproof sheet (107); a T-shaped clamping block (302b) is slidably connected in a sliding seal in the clamping slot (301d); the clamping block (302b) is elastically connected to the inner wall of the clamping slot (301d) via a second spring (302c); and the annular cavity (301b) is connected to the clamping slot (301d) via a pump air hole (302d).

9. The multi-port programmable modular DC power supply detection device according to claim 8, characterized in that: The one-way component (303) comprises a strip-shaped opening (303a) arranged on the clamping block (302b), the strip-shaped opening (303a) being provided with a strip-shaped groove (303b), a transmission shaft being rotatably connected in the strip-shaped groove (303b), a torsion spring (303c) being provided on the rotation shaft, and a wedge-shaped block (303d) cooperating with the expansion piece (302a) being fixedly connected to the transmission shaft.

10. The multi-port programmable modular DC power supply detection device according to claim 8 or 9, characterized in that: The exhaust component (304) comprises an exhaust pipe (304a) arranged on the air guide cavity (301a), and a valve (304b) is provided on the exhaust pipe (304a).

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