CN119846292A

CN119846292A - Safety detection equipment for weak current engineering

Info

Publication number: CN119846292A
Application number: CN202510322047.8A
Authority: CN
Inventors: 刘玉胜; 韩艳丽; 于雪
Original assignee: Shandong Ruhao Jingtai Network Technology Co ltd
Current assignee: Shandong Ruhao Jingtai Network Technology Co ltd
Priority date: 2025-03-19
Filing date: 2025-03-19
Publication date: 2025-04-18
Anticipated expiration: 2045-03-19
Also published as: CN119846292B

Abstract

The invention discloses safety detection equipment for weak current engineering, which comprises a detection box, wherein a circuit board is arranged on the bottom wall of the detection box, the circuit board is electrically connected with two detection probes through a wire, two resistance seats are arranged on the circuit board, and a pressing type resistance adjusting mechanism is arranged on the detection box. This safety inspection equipment of light current engineering, through the setting of push type resistance adjustment mechanism, press the post once, can increase the contact area of contact and resistance seat, realize the reduction of resistance in the circuit at detection probe place, press the post once on the right side, can reduce the contact area of contact and resistance seat, realize the increase of resistance in the circuit at detection probe place, and then reach the purpose of nimble voltage in the regulation detection circuit, thereby the detection sensitivity of detection probe has been adjusted, let the accurate collection of detection probe and the voltage signal of amplification, and then the accuracy of promotion detected data.

Description

Safety detection equipment for weak current engineering

Technical Field

The invention relates to the technical field of weak current detection equipment, in particular to safety detection equipment for weak current engineering.

Background

Weak current engineering is a classification of electric power application, the electric power application can be classified into strong current and weak current according to the intensity of electric power transmission power, building and building group power consumption generally refers to weak current of 220V50Hz or below, electric power energy is mainly provided for people, electric energy is converted into other energy, and in the implementation process of the electric power engineering application, people need to detect weak current circuits so as to ensure that equipment in a circuit can normally and efficiently and safely operate.

The chinese patent application with publication number CN209486221U discloses a weak current engineering safety detection device, this patent provides a weak current engineering safety detection device, and a simple structure takes convenient to use, contact weak current circuit through the test probe, voltage sensor and current sensor can detect voltage and current data in the circuit fast and accurately, analysis and integration through analysis contrast module, present the regulation for the PLC controller, data display is on the display, the warning of data anomaly alarm lamp scintillation, the use of giving the user has brought very big facility, moreover can realize the high-efficient heat dissipation to the device through heat abstractor according to the demand, guarantee convenient safety and stability of personnel through taking the structure and take, the work burden of personnel has been alleviateed, the high efficiency and the safety in utilization of check out test set have been guaranteed, the availability factor of weak current engineering safety detection device has been promoted, but the above-mentioned patent still has following deficiency:

When the sensitivity of the voltage detection probe is calibrated, because of the slight difference of voltage standards in different areas in weak current engineering, the measurement standard of the detection probe needs to be accurately adjusted, and the patent lacks an effective means to realize the accurate adjustment of the gain of the voltage detection circuit, so that the detection probe is difficult to accurately acquire and amplify the voltage signal, thereby affecting the accuracy of detection data;

For this purpose, we propose a safety detection device for weak current engineering to solve the above problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides safety detection equipment for weak current engineering, and solves the problems in the background technology.

The safety detection equipment for weak current engineering comprises a detection box, wherein a circuit board is arranged on the bottom wall of the detection box, the circuit board is electrically connected with two detection probes through a wire, two resistance seats are arranged on the circuit board, a pressing type resistance adjusting mechanism is arranged on the detection box, and the pressing type resistance adjusting mechanism is used for adjusting the detection sensitivity of the detection probes;

The utility model provides a push type resistance adjustment mechanism, including fixing two casings in the detection case, two the top of casing is fixed with the roof, two the bottom of casing is fixed with the bottom plate, the top sliding connection of roof has two to press the post, two the bottom of pressing the post all extends to the inside of casing, two all be fixed with the spring one between the bottom of pressing the post and the top of bottom plate, two the recess is all seted up to one side of pressing the post, rotate through the pivot between the inner wall of recess and be connected with the pawl, one side of recess inner wall is fixed with the shell fragment, one side of shell fragment and one side contact extrusion of pawl, one of them one side sliding connection of pressing the post has rack one, another one side sliding connection of pressing the post has the slide, rack one and the bottom of slide all run through the bottom plate and extend to the bottom of bottom plate, be fixed with the spliced pole between the bottom of rack one and the bottom of slide, the bottom of spliced pole is fixed with the contact piece, two the inside of casing is connected with the ratchet through the bull stick rotation, it has the bottom plate to go up to be fixed with the gear, two top of bull stick has the fixed with the spring.

Preferably, the two pawls are engaged with the ratchet, the first gear is engaged with the first rack, the top end of the clamping block is engaged with the ratchet, two sides of the contact are in sliding connection with the opposite sides of the two blocking seats, and the two blocking seats are electrically connected with the contact.

Preferably, a heat dissipation groove is formed in one side of the detection box, a baffle is connected between the inside of the heat dissipation groove through rotation of a plurality of vertical rods, a plurality of baffle plates are fixed on one side of the baffle plates, a plurality of connecting rods are arranged above the fixing blocks, a plurality of square blocks are fixed on the connecting rods, and bottoms of the square blocks are connected with the tops of the fixing blocks through rotation of pin shafts.

Preferably, be provided with the heat dissipation adjusting part who adjusts separation blade turned angle on the spliced pole, heat dissipation adjusting part is including fixing the L type pole in spliced pole one side, L type pole bottom mounting has the wedge, be fixed with the riser on the roof of detection case, the internal surface sliding connection of riser has the movable rod.

Preferably, a circular plate is fixed at one end of the moving rod, two side plates are fixed at one side of the circular plate, rollers are connected between opposite sides of the two side plates in a rotating mode, the outer surfaces of the rollers are in contact extrusion with inclined surfaces of wedge-shaped blocks, a spring III is sleeved on the outer surface of the moving rod, one end of the spring III is fixed with one side of the circular plate, and the other end of the spring III is fixed with one side of the vertical plate.

Preferably, a folding rod is fixed at the top of the moving rod, a rack II is fixed at one end of the folding rod, a gear II is fixed on one of the vertical rods, and the rack II is meshed with the gear II.

Preferably, the movable rod is provided with a dust removing unit for wiping dust on opposite sides of the two blocking seats, the dust removing unit comprises a bent rod fixed on one side of the movable rod, one end of the bent rod is fixed with a sponge plate, and two sides of the sponge plate are in sliding connection with the opposite sides of the two blocking seats.

Preferably, the vent has been seted up to one side of detecting the case, install the fan in the vent, voltage sensor, current sensor, analysis contrast module are installed to one side of detecting the incasement wall, alarm lamp, display screen and PLC controller are installed to the outside of detecting the case, the bottom of detecting the case is fixed with handheld handle.

The invention provides safety detection equipment for weak current engineering. Compared with the prior art, the method has the following beneficial effects:

(1) Through the setting of push type resistance adjustment mechanism, press the post once, can increase the contact area of contact and resistance seat, realize detecting probe place circuit in resistance's reduction, press the post once on the right side, can reduce the contact area of contact and resistance seat, realize detecting probe place circuit in resistance's increase, and then reach nimble purpose of adjusting voltage in the detection circuit to detect probe's detection sensitivity has been adjusted, let detecting probe accurate collection and amplification voltage signal, and then the accuracy of promotion detected data.

(2) Through the setting of heat dissipation adjusting part, link with push type resistance adjustment mechanism, when the spliced pole moves down, because the resistance in the circuit reduces, the heat that produces reduces, the separation blade rotates and changes the angle and close gradually, reduce fan rotational speed this moment, reducible air output, the noise reduction, when the spliced pole is at the time of upwards moving, because the resistance in the circuit increases, the heat that produces grow, the separation blade rotates and opens gradually this moment, promote fan rotational speed this moment, can increase the air output, accelerate radiating speed, the purpose of quick heat dissipation and noise reduction has been reached.

(3) Through the setting of dust removal unit, at the in-process that heat dissipation adjusting part removed, utilize the sponge board to clean the opposite side of blocking the seat and remove the dirt, when the contact moves up and resets, the sponge board slides into and also can prevent dust between two blocking the seat, effectively avoids blocking the phenomenon that the in-process external dust adhesion leads to the resistance increase on blocking the seat.

Drawings

FIG. 1 is a perspective view of an external structure of the present invention;

FIG. 2 is a perspective view of the internal structure of the present invention;

FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;

FIG. 4 is a second perspective view of the internal structure of the present invention;

FIG. 5 is an exploded view of the push-type resistance adjustment mechanism of the present invention;

FIG. 6 is an enlarged view of a portion of the invention at B in FIG. 5;

FIG. 7 is a second exploded view of the push-type resistance adjustment mechanism of the present invention;

FIG. 8 is a perspective view of a heat dissipation adjustment assembly and a dust removal unit of the present invention;

Fig. 9 is an enlarged view of a portion of fig. 8C in accordance with the present invention.

In the figure, 1, a detection box, 2, a circuit board, 3, a detection probe, 4, a resistance seat, 5, a pressing type resistance adjusting mechanism, 6, a heat dissipation groove, 7, a vertical rod, 8, a baffle plate, 9, a fixed block, 10, a connecting rod, 11, a square block, 12, a heat dissipation adjusting component, 13, a dust removing unit, 14, a ventilation opening, 15, a fan, 16, a voltage sensor, 17, a current sensor, 18, an analysis comparison module, 19, an alarm lamp, 20, a display screen, 21, a PLC controller, 22, a hand-held handle, 51, a shell, 52, a top plate, 53, a bottom plate, 54, a pressing column, 55, a spring I, 56, a groove, 57, a pawl, 58, a spring plate, 59, a rack I, 510, a slide bar, 511, a connecting column, 512, a contact plate, 513, a rotating rod, 514, a ratchet, 515, a gear I, a spring II, 517, a fixture block, 121, an L-shaped rod, 122, a wedge block, 123, a vertical plate, 124, a moving rod, a circular plate, a roller 125, a side plate, 126, a side plate, 127, a rolling bar, a spring III, 129, a bent rod, 129, a sponge rod, 131, a sponge rod, and 131 are shown.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The embodiment of the invention provides three technical schemes, which specifically comprise the following embodiments:

Example 1

Referring to fig. 1,4, 5, 6 and 7, a safety detection device for weak current engineering includes a detection box 1, a circuit board 2 is mounted on a bottom wall of the detection box 1, a circuit for controlling a detection probe 3 to work is arranged on the circuit board 2, the circuit board 2 is electrically connected with two detection probes 3 through wires, a voltage in the weak circuit to be detected can be detected after the detection probes 3 are started, two resistance seats 4 are mounted on the circuit board 2, the resistance seats 4 are conductive metal blocks, a push-type resistance adjusting mechanism 5 is arranged on the detection box 1, and the push-type resistance adjusting mechanism 5 is used for adjusting detection sensitivity of the detection probes 3;

The push type resistance adjusting mechanism 5 comprises two shells 51 fixed in the detection box 1, the two shells 51 are combined to form a shell, a top plate 52 is fixed at the top of the two shells 51, a bottom plate 53 is fixed at the bottom of the two shells 51, two push columns 54 are connected to the top of the top plate 52 in a sliding mode, the bottoms of the two push columns 54 extend to the inside of the shells 51, a first spring 55 is fixed between the bottoms of the two push columns 54 and the top of the bottom plate 53, a groove 56 is formed in one side of each of the two push columns 54, a pawl 57 is connected between the inner walls of the groove 56 in a rotating mode through a rotating shaft, a spring plate 58 is fixed at one side of the inner wall of the groove 56, the pawl 57 can be reset through the arrangement of the spring plate 58, a metal plate with good elasticity is adopted by the spring plate 58, one side of the spring plate 58 is in contact extrusion with one side of the pawl 57, one side of the push column 54 is connected with a first rack 59 in a sliding mode, the bottom end of the other push column 54 is connected with a slide bar 510 in a sliding mode, the bottom end of the slide bar 59 extends to the bottom of the bottom plate 53, a first rack 59 is fixedly connected with the bottom end of the slide bar 510, one side of the slide bar 59 is fixedly penetrates the bottom plate 53, one bottom plate 511 is connected with the bottom plate 512, a top plate 512 is fixedly connected with the bottom plate 512, a second spring plate is fixedly connected with the top plate 512, and the top plate is fixedly connected with the top plate 512 is provided with the top plate 512, and the top plate is fixedly connected with a top plate 512.

The two pawls 57 are clamped with the ratchet 514, the first gear 515 is meshed with the first rack 59, the top ends of the clamping blocks 517 are clamped with the ratchet 514, the clamping blocks 517 can limit the ratchet 514 after being clamped between teeth of the ratchet 514, the ratchet 514 is prevented from rotating, two sides of the contact piece 512 are in sliding connection with opposite sides of the two blocking seats 4, the two blocking seats 4 are electrically connected with the contact piece 512, after the blocking seats 4 are contacted with the contact piece 512, a circuit is connected, and the detection probe 3 works normally.

Through the setting of push type resistance adjustment mechanism 5, press the left side once and press post 54, can increase the contact area of contact 512 with hinder seat 4, realize detecting the reduction of resistance in the circuit that probe 3 is located, press right side press post 54 once, can reduce contact 512 and hinder seat 4's contact area, realize detecting the increase of resistance in the circuit that probe 3 is located, and then reach nimble purpose of adjusting voltage in the detection circuit, thereby the detection sensitivity of probe 3 has been adjusted, let probe 3 accurate collection and the amplification voltage signal, and then promote the accuracy of detection data.

Example 2

Based on embodiment 1, see fig. 3, fig. 4, fig. 8, fig. 9, the radiating groove 6 has been seted up to one side of detecting box 1, be connected with separation blade 8 through a plurality of montants 7 rotations between the inside of radiating groove 6, separation blade 8 rotates to when being in a perpendicular state with radiating groove 6, can carry out the heat dissipation of maximum this moment, one side of a plurality of separation blades 8 all is fixed with fixed block 9, the top of a plurality of fixed block 9 is provided with connecting rod 10, be fixed with a plurality of square 11 on the connecting rod 10, the bottom of a plurality of square 11 all is connected through the round pin axle rotation with the top of fixed block 9, through the setting of fixed block 9, connecting rod 10, round pin axle, square 11, can link a plurality of separation blades 8, rotate one of them separation blade 8, can drive all separation blades 8 and rotate.

The connecting column 511 is provided with a heat dissipation adjusting component 12 for adjusting the rotation angle of the baffle 8, the heat dissipation adjusting component 12 comprises an L-shaped rod 121 fixed on one side of the connecting column 511, a wedge-shaped block 122 is fixed at the bottom end of the L-shaped rod 121, a vertical plate 123 is fixed on the top wall of the detection box 1, and the inner surface of the vertical plate 123 is slidably connected with a movable rod 124.

One end of the moving rod 124 is fixed with a circular plate 125, one side of the circular plate 125 is fixed with two side plates 126, a roller 127 is rotatably connected between opposite sides of the two side plates 126, the outer surface of the roller 127 is in contact extrusion with the inclined surface of the wedge block 122, the outer surface of the moving rod 124 is sleeved with a spring III 128, one end of the spring III 128 is fixed with one side of the circular plate 125, the other end of the spring III 128 is fixed with one side of the vertical plate 123, and the arrangement of the spring III 128 can drive the moving rod 124 to reset.

The top of the moving rod 124 is fixed with a folding rod 129, one end of the folding rod 129 is fixed with a rack II 1210, one of the vertical rods 7 is fixed with a gear II 1211, and the rack II 1210 is meshed with the gear II 1211.

Through setting up of heat dissipation adjusting part 12, link with push type resistance adjustment mechanism 5, when spliced pole 511 moves down, because the resistance in the circuit reduces, the heat that produces reduces, separation blade 8 rotates the change angle and closes gradually, reduce fan 15 rotational speed this moment, reducible air output, noise reduction, when spliced pole 511 is moving upwards, because the resistance in the circuit increases, the heat that produces grow, separation blade 8 rotates gradually and opens this moment, promote fan 15 rotational speed this moment, can increase the air output, accelerate the radiating rate, the purpose of quick heat dissipation and noise reduction has been reached.

Example 3

On the basis of embodiment 2, as shown in fig. 1, 2, 4 and 8, a dust removing unit 13 for wiping dust from opposite sides of two blocking seats 4 is provided on a moving rod 124, the dust removing unit 13 includes a bent rod 131 fixed on one side of the moving rod 124, one end of the bent rod 131 is fixed with a sponge plate 132, and two sides of the sponge plate 132 are slidably connected with opposite sides of the two blocking seats 4.

Through the setting of the dust removal unit 13, at the in-process that heat dissipation adjusting part 12 removed, utilize sponge board 132 to wipe the opposite side of holding up a seat 4 and remove the dirt, when contact 512 moves up and resets, sponge board 132 slides into and also can prevent dust between two holding up a seat 4, effectively avoids the phenomenon that leads to the resistance increase at ventilation in-process external dust adhesion on holding up a seat 4.

The vent 14 has been seted up to one side of detecting box 1, install fan 15 in the vent 14, voltage sensor 16 is installed to one side of detecting box 1 inner wall, current sensor 17, analysis contrast module 18, alarm lamp 19 is installed in the outside of detecting box 1, display screen 20 and PLC controller 21, the bottom of detecting box 1 is fixed with handheld handle 22, fan 15, voltage sensor 16, current sensor 17, analysis contrast module 18, alarm lamp 19, display screen 20 and PLC controller 21 are prior art, receive external switch control, and with the built-in power electric connection of detecting box 1.

And all that is not described in detail in this specification is well known to those skilled in the art.

When in operation, the detection probe 3 is connected with a weak current circuit to be detected, the voltage sensor 16 and the current sensor 17 can rapidly and accurately detect voltage and current data in a circuit, the data are analyzed and integrated through the analysis and comparison module 18 and then are displayed on the display screen 20 to be regulated by the PLC 21, the data are displayed on the display screen 20, the data abnormal alarm lamp 19 flashes to warn, when the detection sensitivity of the detection probe 3 needs to be regulated, the left pressing column 54 is pressed, the pressing column 54 drives the pawl 57 to move downwards and presses the compression spring I55, the pawl 57 drives the ratchet 514 to rotate for a certain angle and clamp by the clamping block 517, the ratchet 514 drives the gear I515 to rotate, the gear I515 drives the rack I59 and the connecting column 511 to move downwards for a certain distance, the connecting column 511 drives the contact 512 to move downwards for a certain distance, the contact 512 can move downwards for a certain distance after the left pressing column 54 is pressed once, when the contact piece 512 is communicated with the two resistance seats 4, a power supply can be connected, the detection probe 3 is utilized for detection, when the contact piece 512 moves downwards, the contact area between the contact piece 512 and the two resistance seats 4 is larger and larger, the resistance in the circuit is reduced, and then voltage signals acquired at two ends of the detection probe 3 are changed, the detection probe 3 converts the acquired voltage signals into electric signals for processing and analysis, so that the resistance is reduced to indirectly increase the signal intensity acquired by the detection probe 3, the detection sensitivity is adjusted, the contact piece 512 can be driven to reset upwards by pressing the right pressing column 54, the resistance is increased, the signal intensity is reduced, when the connecting column 511 moves downwards, the generated heat is reduced due to the reduction of the resistance in the circuit, the wedge-shaped block 122 moves downwards and presses the roller 127, and then the moving rod 124 and the rack two 1210 are driven to move leftwards, the rack two 1210 drives the gear two 1211 to rotate, and then the gear two 1211 drives the baffle 8 to rotate to change the angle and gradually close, at this time, the rotation speed of the fan 15 is reduced, the air output can be reduced, noise is reduced, when the connecting column 511 moves upwards, due to the increase of resistance in the circuit, the generated heat is increased, at this time, the baffle 8 rotates to be gradually opened, at this time, the rotation speed of the fan 15 is increased, the air output can be increased, the heat dissipation speed is accelerated, the sponge plate 132 can be driven to move leftwards in the process of the moving rod 124, and then the sponge plate 132 is driven to wipe one sides of the two resistance seats 4 to remove dust.

The foregoing detailed description of the embodiments of the invention has been provided for the purpose of illustrating the preferred embodiments of the invention and is not to be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims

1. The safety detection equipment for weak current engineering comprises a detection box (1) and is characterized in that a circuit board (2) is arranged on the bottom wall of the detection box (1), the circuit board (2) is electrically connected with two detection probes (3) through wires, two resistance seats (4) are arranged on the circuit board (2), a pressing type resistance adjusting mechanism (5) is arranged on the detection box (1), and the pressing type resistance adjusting mechanism (5) is used for adjusting the detection sensitivity of the detection probes (3);

The push type resistance adjusting mechanism (5) comprises two shells (51) fixed in a detection box (1), top plates (52) are fixed at the tops of the two shells (51), bottom plates (53) are fixed at the bottoms of the two shells (51), two push columns (54) are connected to the tops of the top plates (52) in a sliding mode, one side of one push column (54) is connected with a rack one (59) in a sliding mode, a sliding strip (510) is connected to one side of the other push column (54) in a sliding mode, a groove (56) is formed in one side of the two push columns (54), a pawl (57) is connected between the inner walls of the groove (56) in a rotating mode through a rotating shaft, one side of the inner walls of the groove (56) is fixed with a spring plate (58), one side of the spring plate (58) is in contact extrusion with one side of the pawl (57), one side of the push column (54) is connected with the rack one (59) in a sliding mode, one side of the other push column (54) is connected with a sliding strip (510) in a sliding mode, one side of the other push column (54) is connected with the bottom plate (59) in a sliding mode, one side of the bottom plate (59) is connected with the rack one side of the rack (59) in a sliding mode, one side of the bottom plate (59) is connected with the bottom plate (59) in a sliding strip (59) in a sliding mode, one side of the bottom plate (59) is connected with the bottom plate (59) through the bottom plate (53) in a sliding mode, the bottom end of the connecting column (511) is fixedly provided with a contact piece (512), the inside of the two shells (51) is rotatably connected with a ratchet wheel (514) through a rotating rod (513), a first gear (515) is fixed on the rotating rod (513), the top of the bottom plate (53) is fixedly provided with a second spring (516), and the top end of the second spring (516) is fixedly provided with a clamping block (517).

2. The weak current engineering safety inspection device according to claim 1, wherein the two pawls (57) are clamped with the ratchet wheel (514), the first gear (515) is meshed with the first rack (59), the top ends of the clamping blocks (517) are clamped with the ratchet wheel (514), two sides of the contact piece (512) are in sliding connection with the opposite sides of the two blocking seats (4), and the two blocking seats (4) are electrically connected with the contact piece (512).

3. The safety detection device for weak current engineering according to claim 1, wherein a heat dissipation groove (6) is formed in one side of the detection box (1), a baffle (8) is connected between the interiors of the heat dissipation groove (6) through a plurality of vertical rods (7) in a rotating mode, fixing blocks (9) are fixed on one sides of the baffle (8), connecting rods (10) are arranged above the fixing blocks (9), a plurality of blocks (11) are fixed on the connecting rods (10), and bottoms of the blocks (11) are connected with the tops of the fixing blocks (9) in a rotating mode through pin shafts.

4. The safety detection device for weak current engineering according to claim 3, wherein the connecting column (511) is provided with a heat dissipation adjusting component (12) for adjusting the rotation angle of the baffle plate (8), the heat dissipation adjusting component (12) comprises an L-shaped rod (121) fixed on one side of the connecting column (511), a wedge block (122) is fixed at the bottom end of the L-shaped rod (121), a vertical plate (123) is fixed on the top wall of the detection box (1), and a movable rod (124) is connected to the inner surface of the vertical plate (123) in a sliding mode.

5. The safety detection device for weak current engineering according to claim 4, wherein one end of the moving rod (124) is fixed with a circular plate (125), one side of the circular plate (125) is fixed with two side plates (126), a roller (127) is rotatably connected between opposite sides of the two side plates (126), the outer surface of the roller (127) is pressed by contact with an inclined surface of the wedge block (122), a spring III (128) is sleeved on the outer surface of the moving rod (124), one end of the spring III (128) is fixed with one side of the circular plate (125), and the other end of the spring III (128) is fixed with one side of the vertical plate (123).

6. The safety inspection device for weak current engineering according to claim 4, wherein a folding rod (129) is fixed at the top of the moving rod (124), a rack two (1210) is fixed at one end of the folding rod (129), a gear two (1211) is fixed on one of the vertical rods (7), and the rack two (1210) is meshed with the gear two (1211).

7. The safety inspection device for weak current engineering according to claim 4, wherein the moving rod (124) is provided with a dust removing unit (13) for wiping dust from opposite sides of the two blocking seats (4), the dust removing unit (13) comprises a bent rod (131) fixed on one side of the moving rod (124), one end of the bent rod (131) is fixed with a sponge plate (132), and two sides of the sponge plate (132) are in sliding connection with the opposite sides of the two blocking seats (4).

8. The safety detection device for weak current engineering according to claim 1, wherein a ventilation opening (14) is formed in one side of the detection box (1), a fan (15) is arranged in the ventilation opening (14), a voltage sensor (16), a current sensor (17) and an analysis comparison module (18) are arranged on one side of the inner wall of the detection box (1), an alarm lamp (19), a display screen (20) and a PLC (programmable logic controller) are arranged on the outer side of the detection box (1), and a handheld handle (22) is fixed at the bottom of the detection box (1).