Safety detection equipment for weak current engineering

Abstract

A weak current engineering safety detection device disclosed by the present invention comprises a detection box, the bottom wall of the detection box is provided with a circuit board, the circuit board is electrically connected with two detection probes through wires, the circuit board is provided with two resistance seats, the detection box is provided with a push type resistance adjusting mechanism, and the push type resistance adjusting mechanism is electrically connected with the detection probes through wires. The invention relates to the technical field of weak current detection equipment. According to the safety detection equipment for the weak current engineering, through the arrangement of the pressing type resistance adjusting mechanism, the contact area of the contact piece and the resistor seat can be increased every time a left pressing column is pressed, the resistance in a circuit where the detection probe is located is reduced, and the contact area of the contact piece and the resistor seat can be reduced every time a right pressing column is pressed. The resistance in the circuit where the detection probe is located is increased, the purpose of flexibly adjusting the voltage in the detection circuit is achieved, the detection sensitivity of the detection probe is adjusted, the detection probe accurately collects and amplifies voltage signals, and then the accuracy of detection data is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of weak current detection equipment, in particular to safety detection equipment for weak current engineering. Background Art

[0002] Weak current engineering is a classification of power application. Power application can be divided into strong current and weak current according to the strength of power transmission. The electricity used in buildings and building complexes generally refers to weak current of AC 220V50Hz and below, which mainly provides electricity to people and converts electricity into other energy. During the implementation of power engineering applications, personnel need to detect weak current circuits to ensure that the equipment in the line can operate normally, efficiently and safely.

[0003] The Chinese patent application with publication number CN209486221U discloses a weak current engineering safety detection device. The patent provides a weak current engineering safety detection device with a simple structure and convenient carrying and use. By contacting the weak current line with the detection probe, the voltage sensor and the current sensor can quickly and accurately detect the voltage and current data in the line, and the analysis and integration are performed by the analysis and comparison module, and presented to the PLC controller for adjustment. The data is displayed on the display, and the data abnormality alarm light flashes to warn, which brings great convenience to the user's use. In addition, according to the needs, the device can be efficiently dissipated through the heat dissipation device. The carrying structure ensures that the personnel can carry it conveniently, safely and stably, reduces the workload of the personnel, ensures the efficiency and safety of the detection equipment, and improves the use efficiency of the weak current engineering safety detection device. However, the above patent still has the following shortcomings: When calibrating the sensitivity of the voltage detection probe, due to the slight differences in voltage standards in different areas of weak current engineering, the measurement benchmark of the detection probe needs to be accurately adjusted. The above patent lacks effective means to achieve accurate adjustment of the gain of the voltage detection circuit, which makes it difficult for the detection probe to accurately collect and amplify the voltage signal, thereby affecting the accuracy of the detection data; In this regard, we proposed a safety detection equipment for weak current engineering to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a safety detection device for weak current engineering, which solves the problems raised in the background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a safety detection device for weak current engineering, including a detection box, a circuit board is installed on the bottom wall of the detection box, the circuit board is electrically connected to two detection probes through a wire, two resistance seats are installed on the circuit board, and a push-type resistance adjustment mechanism is provided on the detection box, and the push-type resistance adjustment mechanism is used to adjust the detection sensitivity of the detection probe; The push-type resistance adjustment mechanism includes two shells fixed in the detection box, the tops of the two shells are fixed with top plates, the bottoms of the two shells are fixed with bottom plates, the tops of the top plates are slidably connected to two push columns, the bottom ends of the two push columns extend to the inside of the shells, a spring is fixed between the bottom ends of the two push columns and the top of the bottom plate, one side of the two push columns is provided with a groove, the inner walls of the grooves are rotatably connected with a ratchet through a rotating shaft, one side of the inner wall of the groove is fixed with a spring sheet, and the spring sheet One side of the sheet contacts and is squeezed with one side of the pawl, one side of one of the pressing columns is slidably connected to a rack 1, and one side of the other pressing column is slidably connected to a slide bar, the bottom ends of the rack 1 and the slide bar both penetrate the bottom plate and extend to the bottom of the bottom plate, a connecting column is fixed between the rack 1 and the bottom end of the slide bar, a contact sheet is fixed to the bottom end of the connecting column, the inside of the two shells is rotatably connected to a ratchet through a rotating rod, a gear 1 is fixed on the rotating rod, a spring 2 is fixed to the top of the bottom plate, and a block is fixed to the top of the spring 2.

[0006] Preferably, the two pawls are engaged with the ratchet, the gear one is meshed with the rack one, the top of the block is engaged with the ratchet, the two sides of the contact piece are slidably connected to the opposite sides of the two resistance seats, and the two resistance seats are electrically connected to the contact piece.

[0007] Preferably, a heat dissipation groove is opened on one side of the detection box, and a baffle is rotatably connected to the inside of the heat dissipation groove through a plurality of vertical rods, a fixed block is fixed on one side of the plurality of baffles, a connecting rod is arranged above the plurality of fixed blocks, a plurality of blocks are fixed on the connecting rod, and the bottom of the plurality of blocks are rotatably connected to the top of the fixed block through a pin shaft.

[0008] Preferably, a heat dissipation adjustment component for adjusting the rotation angle of the baffle is provided on the connecting column, and the heat dissipation adjustment component includes an L-shaped rod fixed on one side of the connecting column, a wedge block is fixed to the bottom end of the L-shaped rod, a vertical plate is fixed on the top wall of the detection box, and a moving rod is slidably connected to the inner surface of the vertical plate.

[0009] Preferably, a circular plate is fixed to one end of the movable rod, two side plates are fixed to one side of the circular plate, a roller is rotatably connected between opposite sides of the two side plates, the outer surface of the roller is in contact and extrusion with the inclined surface of the wedge block, and a spring three is sleeved on the outer surface of the movable rod, one end of the spring three is fixed to one side of the circular plate, and the other end of the spring three is fixed to one side of the vertical plate.

[0010] Preferably, a folding rod is fixed on the top of the moving rod, a rack 2 is fixed on one end of the folding rod, a gear 2 is fixed on one of the vertical rods, and the rack 2 is meshed with the gear 2.

[0011] Preferably, the movable rod is provided with a dust removal unit for wiping and removing dust from opposite sides of the two resistance seats. The dust removal unit includes a bent rod fixed on one side of the movable rod, a sponge board is fixed at one end of the bent rod, and both sides of the sponge board are slidably connected to opposite sides of the two resistance seats.

[0012] Preferably, a vent is opened on one side of the detection box, a fan is installed in the vent, a voltage sensor, a current sensor, and an analysis and comparison module are installed on one side of the inner wall of the detection box, an alarm light, a display screen and a PLC controller are installed on the outside of the detection box, and a hand-held handle is fixed to the bottom of the detection box.

[0013] The present invention provides a safety detection device for weak current engineering. Compared with the prior art, it has the following beneficial effects: (1) By setting up the push-type resistance adjustment mechanism, each time the left push column is pressed, the contact area between the contact piece and the resistance seat can be increased, thereby reducing the resistance in the circuit where the detection probe is located. Each time the right push column is pressed, the contact area between the contact piece and the resistance seat can be reduced, thereby increasing the resistance in the circuit where the detection probe is located, thereby achieving the purpose of flexibly adjusting the voltage in the detection circuit, thereby adjusting the detection sensitivity of the detection probe, allowing the detection probe to accurately collect and amplify the voltage signal, thereby improving the accuracy of the detection data.

[0014] (2) Through the setting of the heat dissipation adjustment component, it is linked with the push-type resistance adjustment mechanism. When the connecting column moves downward, the resistance in the circuit decreases, the heat generated decreases, the baffle rotates to change the angle and gradually closes. At this time, the fan speed is reduced, the air volume can be reduced, and the noise can be reduced. When the connecting column moves upward, the resistance in the circuit increases, the heat generated increases, and the baffle rotates and gradually opens. At this time, the fan speed is increased, the air volume can be increased, and the heat dissipation speed is accelerated, thereby achieving the purpose of rapid heat dissipation and noise reduction.

[0015] (3) Through the setting of the dust removal unit, during the movement of the heat dissipation adjustment component, the sponge board is used to wipe the opposite side of the resistance seat to remove dust. When the contact piece moves up and resets, the sponge board slides between the two resistance seats to prevent dust, effectively avoiding the phenomenon that the external dust adheres to the resistance seat during ventilation, causing the resistance to increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the external structure of the present invention; Figure 2 The internal structure of the present invention is three-dimensional Figure 1 ; Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A; Figure 4The internal structure of the present invention is three-dimensional Figure 2 ; Figure 5 The push-type resistance adjustment mechanism of the present invention explodes Figure 1 ; Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle; Figure 7 The push-type resistance adjustment mechanism of the present invention explodes Figure 2 ; Figure 8 A three-dimensional diagram of the heat dissipation adjustment assembly and the dust removal unit of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged view of point C in the middle.

[0017] In the figure: 1. detection box; 2. circuit board; 3. detection probe; 4. resistance seat; 5. push-type resistance adjustment mechanism; 6. heat sink; 7. vertical rod; 8. baffle; 9. fixed block; 10. connecting rod; 11. block; 12. heat dissipation adjustment component; 13. dust removal unit; 14. vent; 15. fan; 16. voltage sensor; 17. current sensor; 18. analysis and comparison module; 19. alarm light; 20. display screen; 21. PLC controller; 22. handheld handle; 51. shell; 52. top plate; 53. bottom plate; 54. press column; 5 5. Spring 1; 56. Groove; 57. Ratchet; 58. Shrapnel; 59. Rack 1; 510. Slide; 511. Connecting column; 512. Contact piece; 513. Rotating rod; 514. Ratchet; 515. Gear 1; 516. Spring 2; 517. Block; 121. L-shaped rod; 122. Wedge block; 123. Vertical plate; 124. Moving rod; 125. Round plate; 126. Side plate; 127. Roller; 128. Spring 3; 129. Folding rod; 1210. Rack 2; 1211. Gear 2; 131. Bending rod; 132. Sponge board. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides three technical solutions, including the following embodiments: Example 1 See also Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 A safety detection device for weak current engineering includes a detection box 1, a circuit board 2 is installed on the bottom wall of the detection box 1, a circuit for controlling the operation of a detection probe 3 is arranged on the circuit board 2, the circuit board 2 is electrically connected to two detection probes 3 through a wire, and the detection probe 3 can detect the voltage in the weak current circuit to be detected after being started, two resistance seats 4 are installed on the circuit board 2, and the resistance seats 4 are conductive metal blocks, and a push-type resistance adjustment mechanism 5 is arranged on the detection box 1, and the push-type resistance adjustment mechanism 5 is used to adjust the detection sensitivity of the detection probe 3; The push-type resistance adjustment mechanism 5 includes two shells 51 fixed in the detection box 1, and the two shells 51 are combined to form an outer shell. A top plate 52 is fixed on the top of the two shells 51, and a bottom plate 53 is fixed on the bottom of the two shells 51. Two pressing columns 54 are slidably connected to the top of the top plate 52. The bottom ends of the two pressing columns 54 extend to the inside of the shell 51. A spring 55 is fixed between the bottom ends of the two pressing columns 54 and the top of the bottom plate 53. A groove 56 is opened on one side of the two pressing columns 54. A pawl 57 is rotatably connected between the inner walls of the groove 56 through a rotating shaft. A spring 58 is fixed on one side of the inner wall of the groove 56. The setting of the spring 58 allows the pawl 57 to be reset. The spring 58 is made of metal with good elasticity. The bottom ends of the rack 59 and the slide bar 510 penetrate the bottom plate 53 and extend to the bottom of the bottom plate 53. A connecting column 511 is fixed between the bottom ends of the rack 59 and the slide bar 510. A contact piece 512 is fixed to the bottom end of the connecting column 511. The contact piece 512 is a conductive metal sheet. The insides of the two shells 51 are rotatably connected to a ratchet 514 through a rotating rod 513. A gear 515 is fixed on the rotating rod 513. A spring 2 516 is fixed on the top of the bottom plate 53. A block 517 is fixed on the top of the spring 2 516.

[0020] The two pawls 57 are both engaged with the ratchet 514, the gear 1 515 is meshed with the rack 1 59, the top of the block 517 is engaged with the ratchet 514, and the block 517 can limit the ratchet 514 after being engaged between the teeth of the ratchet 514 to prevent the ratchet 514 from rotating. The two sides of the contact piece 512 are slidably connected to the opposite sides of the two resistance seats 4, and the two resistance seats 4 are electrically connected to the contact piece 512. After the resistance seat 4 contacts the contact piece 512, the circuit is connected and the detection probe 3 works normally.

[0021] By setting the push-type resistance adjustment mechanism 5, each time the left-side pressing column 54 is pressed, the contact area between the contact piece 512 and the resistance seat 4 can be increased, thereby reducing the resistance in the circuit where the detection probe 3 is located. Each time the right-side pressing column 54 is pressed, the contact area between the contact piece 512 and the resistance seat 4 can be reduced, thereby increasing the resistance in the circuit where the detection probe 3 is located, thereby achieving the purpose of flexibly adjusting the voltage in the detection circuit, thereby adjusting the detection sensitivity of the detection probe 3, allowing the detection probe 3 to accurately collect and amplify the voltage signal, thereby improving the accuracy of the detection data.

[0022] Example 2 Based on Example 1, see Figure 3 , Figure 4 , Figure 8 , Fig. 9 As shown, a heat dissipation groove 6 is opened on one side of the detection box 1, and a baffle 8 is rotatably connected to the inside of the heat dissipation groove 6 through multiple vertical rods 7. When the baffle 8 is rotated to a vertical state with the heat dissipation groove 6, the heat dissipation can be maximized at this time. A fixed block 9 is fixed on one side of the multiple baffles 8, and a connecting rod 10 is arranged above the multiple fixed blocks 9. A multiple block 11 is fixed on the connecting rod 10, and the bottom of the multiple blocks 11 is rotatably connected to the top of the fixed block 9 through a pin shaft. Through the arrangement of the fixed block 9, the connecting rod 10, the pin shaft, and the block 11, the multiple baffles 8 can be linked, and rotating one of the baffles 8 can drive all the baffles 8 to rotate.

[0023] A heat dissipation adjustment component 12 for adjusting the rotation angle of the baffle 8 is provided on the connecting column 511. The heat dissipation adjustment component 12 includes an L-shaped rod 121 fixed on one side of the connecting column 511, a wedge block 122 is fixed to 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 moving rod 124 is slidably connected to the inner surface of the vertical plate 123.

[0024] A circular plate 125 is fixed to one end of the moving rod 124, and two side plates 126 are fixed to one side of the circular plate 125. A roller 127 is rotatably connected between the opposite sides of the two side plates 126. The outer surface of the roller 127 is in contact and extrusion with the inclined surface of the wedge block 122. A spring three 128 is sleeved on the outer surface of the moving rod 124, and one end of the spring three 128 is fixed to one side of the circular plate 125, and the other end of the spring three 128 is fixed to one side of the vertical plate 123. The setting of the spring three 128 can drive the moving rod 124 to reset.

[0025] A folding rod 129 is fixed to the top of the moving rod 124 , a second rack 1210 is fixed to one end of the folding rod 129 , a second gear 1211 is fixed to one of the vertical rods 7 , and the second rack 1210 is meshed with the second gear 1211 .

[0026] By setting the heat dissipation adjustment component 12 and linking with the push-type resistance adjustment mechanism 5, when the connecting column 511 moves downward, the resistance in the circuit decreases, the heat generated decreases, the baffle 8 rotates to change the angle and gradually closes. At this time, the speed of the fan 15 is reduced, the air volume can be reduced, and the noise can be reduced. When the connecting column 511 moves upward, the resistance in the circuit increases, the heat generated increases, and the baffle 8 rotates and gradually opens. At this time, the speed of the fan 15 is increased, the air volume can be increased, and the heat dissipation speed is accelerated, thereby achieving the purpose of rapid heat dissipation and noise reduction.

[0027] Example 3 Based on Example 2, see Figure 1 , Figure 2 , Figure 4 , Figure 8 As shown, a dust removal unit 13 for wiping and removing dust from the opposite sides of the two resistance seats 4 is provided on the movable rod 124. The dust removal unit 13 includes a bent rod 131 fixed on one side of the movable rod 124. A sponge plate 132 is fixed at one end of the bent rod 131. Both sides of the sponge plate 132 are slidably connected to the opposite sides of the two resistance seats 4.

[0028] By setting the dust removal unit 13, during the movement of the heat dissipation adjustment component 12, the sponge board 132 is used to wipe and remove dust on the opposite side of the resistance seat 4. When the contact piece 512 moves up and resets, the sponge board 132 slides between the two resistance seats 4 to prevent dust, effectively avoiding the phenomenon that external dust sticks to the resistance seat 4 during ventilation and causes increased resistance.

[0029] A vent 14 is provided on one side of the detection box 1, and a fan 15 is installed in the vent 14. A voltage sensor 16, a current sensor 17, and an analysis and comparison module 18 are installed on one side of the inner wall of the detection box 1. An alarm light 19, a display screen 20 and a PLC controller 21 are installed on the outside of the detection box 1. A hand-held handle 22 is fixed to the bottom of the detection box 1. The fan 15, the voltage sensor 16, the current sensor 17, the analysis and comparison module 18, the alarm light 19, the display screen 20 and the PLC controller 21 are all existing technologies, controlled by an external switch, and electrically connected to the built-in power supply of the detection box 1.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] When working, the detection probe 3 is connected to the weak current circuit to be detected. The voltage sensor 16 and the current sensor 17 can quickly and accurately detect the voltage and current data in the circuit. The data analysis and integration are presented to the PLC controller 21 for adjustment through the analysis and comparison module 18. The data is displayed on the display screen 20, and the data abnormality alarm light 19 flashes for warning. When it is necessary to adjust the detection sensitivity of the detection probe 3, press the pressing column 54 on the left side, and the pressing column 54 drives the pawl 57 to move downward and squeeze the compression spring 55. The pawl 57 drives the ratchet 514 to rotate a certain angle, and use The block 517 is clamped, and then the ratchet 514 drives the gear 1 515 to rotate, and the gear 1 515 drives the rack 1 59 and the connecting column 511 to move downward a certain distance, and then the connecting column 511 drives the contact piece 512 to move downward a certain distance. Each time the left pressing column 54 is pressed, the contact piece 512 can be moved downward a certain distance. When the contact piece 512 is connected with the two resistance seats 4, the power can be turned on, and the detection probe 3 is used for detection. When the contact piece 512 moves downward, the contact area between the two resistance seats 4 becomes larger and larger, and the resistance in the circuit is reduced, thereby changing the detection The voltage signal obtained at both ends of the probe 3 is converted into an electrical signal by the detection probe 3 for processing and analysis. Therefore, reducing the resistance indirectly increases the signal strength obtained by the detection probe 3, thereby adjusting the detection sensitivity. By pressing the right pressing column 54, the contact piece 512 can be driven to reset upward, increasing the resistance and reducing the signal strength. When the connecting column 511 moves downward, the resistance in the circuit decreases, and the heat generated decreases. At this time, the wedge block 122 moves downward and squeezes the roller 127, thereby driving the moving rod 124 and the rack 1210 to move leftward, thereby Rack 2 1210 drives gear 2 1211 to rotate, and then gear 2 1211 drives baffle 8 to rotate, change angle and gradually close. At this time, reducing the speed of fan 15 can reduce air volume and reduce noise. When connecting column 511 moves upward, the resistance in the circuit increases and more heat is generated. At this time, baffle 8 rotates and gradually opens. At this time, increasing the speed of fan 15 can increase air volume and speed up heat dissipation. In the process of moving rod 124 to the left, sponge plate 132 can be driven to move to the left, thereby driving sponge plate 132 to wipe and remove dust from one side of the two resistance seats 4.

[0032] The above embodiments of the invention are described in detail, but the contents are only preferred embodiments of the invention and cannot be considered to limit the scope of the invention. All equivalent changes and improvements made within the scope of the invention should still fall within the scope of the invention.

Claims

1. A safety detection device for weak current engineering, comprising a detection box (1), characterized in that: A circuit board (2) is installed on the bottom wall of the detection box (1); the circuit board (2) is electrically connected to two detection probes (3) via a wire; two resistance seats (4) are installed on the circuit board (2); a push-type resistance adjustment mechanism (5) is provided on the detection box (1); the push-type resistance adjustment mechanism (5) is used to adjust the detection sensitivity of the detection probes (3); The push-type resistance adjustment mechanism (5) comprises two shells (51) fixed in the detection box (1), the tops of the two shells (51) are fixed with top plates (52), the bottoms of the two shells (51) are fixed with bottom plates (53), the tops of the top plates (52) are slidably connected to two push columns (54), the bottom ends of the two push columns (54) extend into the interior of the shells (51), a spring (55) is fixed between the bottom ends of the two push columns (54) and the top of the bottom plates (53), one side of the two push columns (54) is provided with a groove (56), the inner walls of the grooves (56) are rotatably connected with a pawl (57) via a rotating shaft, one side of the inner wall of the grooves (56) is fixed with a spring sheet (58), one side of the spring sheet (58) is in contact with the pawl (57), One side of the pressing column (54) is contacted and squeezed, one side of one of the pressing columns (54) is slidably connected to a rack 1 (59), and one side of the other pressing column (54) is slidably connected to a slide bar (510), the bottom ends of the rack 1 (59) and the slide bar (510) both penetrate the bottom plate (53) and extend to the bottom of the bottom plate (53), a connecting column (511) is fixed between the bottom ends of the rack 1 (59) and the slide bar (510), a contact piece (512) is fixed to the bottom end of the connecting column (511), the inside of the two shells (51) is rotatably connected to a ratchet (514) through a rotating rod (513), a gear 1 (515) is fixed on the rotating rod (513), a spring 2 (516) is fixed on the top of the bottom plate (53), and a clamping block (517) is fixed on the top of the spring 2 (516).

2. A safety detection device for weak current engineering according to claim 1, characterized in that: The two pawls (57) are both engaged with the ratchet (514), the gear one (515) is meshed with the rack one (59), the top of the block (517) is both engaged with the ratchet (514), the two sides of the contact piece (512) are slidably connected to the opposite sides of the two blocking seats (4), and the two blocking seats (4) are electrically connected to the contact piece (512).

3. A safety detection device for weak current engineering according to claim 1, characterized in that: A heat dissipation groove (6) is provided on one side of the detection box (1), and a baffle (8) is rotatably connected to the inside of the heat dissipation groove (6) via a plurality of vertical rods (7), a fixing block (9) is fixed to one side of the plurality of baffles (8), a connecting rod (10) is provided above the plurality of fixing blocks (9), a plurality of blocks (11) are fixed on the connecting rod (10), and the bottoms of the plurality of blocks (11) are rotatably connected to the tops of the fixing blocks (9) via pins.

4. A safety detection device for weak current engineering according to claim 3, characterized in that: The connecting column (511) is provided with a heat dissipation adjustment component (12) for adjusting the rotation angle of the baffle (8), the heat dissipation adjustment component (12) comprising an L-shaped rod (121) fixed to one side of the connecting column (511), a wedge-shaped block (122) being fixed to the bottom end of the L-shaped rod (121), a vertical plate (123) being fixed to the top wall of the detection box (1), and a moving rod (124) being slidably connected to the inner surface of the vertical plate (123).

5. A safety detection device for weak current engineering according to claim 4, characterized in that: A circular plate (125) is fixed to one end of the moving rod (124), two side plates (126) are fixed to one side of the circular plate (125), 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 and extrusion with the inclined surface of the wedge block (122), and a spring three (128) is sleeved on the outer surface of the moving rod (124), one end of the spring three (128) is fixed to one side of the circular plate (125), and the other end of the spring three (128) is fixed to one side of the vertical plate (123).

6. A safety detection device for weak current engineering according to claim 4, characterized in that: A folding rod (129) is fixed on the top of the moving rod (124), a rack 2 (1210) is fixed on one end of the folding rod (129), a gear 2 (1211) is fixed on one of the vertical rods (7), and the rack 2 (1210) is meshed with the gear 2 (1211).

7. The safety detection equipment for weak current engineering according to claim 4 is characterized by: The movable rod (124) is provided with a dust removal unit (13) for wiping and removing dust from opposite sides of the two blocking seats (4); the dust removal unit (13) comprises a bent rod (131) fixed to one side of the movable rod (124); a sponge plate (132) is fixed to one end of the bent rod (131); and two sides of the sponge plate (132) are slidably connected to opposite sides of the two blocking seats (4).

8. The safety detection equipment for weak current engineering according to claim 1, characterized in that: A vent (14) is provided on one side of the detection box (1), a fan (15) is installed in the vent (14), a voltage sensor (16), a current sensor (17), and an analysis and comparison module (18) are installed on one side of the inner wall of the detection box (1), an alarm light (19), a display screen (20), and a PLC controller (21) are installed on the outside of the detection box (1), and a hand-held handle (22) is fixed to the bottom of the detection box (1).

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