A construction engineering electrical grounding resistance detection device

Abstract

The present invention discloses a construction engineering electrical grounding resistance detection device, which belongs to the technical field of resistance detection devices. The construction engineering electrical grounding resistance detection device comprises an installation box, a cover plate is rotatably connected at the rear end of the installation box, an isolation plate is installed inside the installation box, a measuring device is installed on the top of the isolation plate, a C1 interface, a P1 interface, a C2 interface, a P2 interface, a first electric block position, a second electric block position, a third electric block position, an EV button, a switch key and a display screen are installed on the top of the measuring device, a first storage box is fixedly connected to both sides of the outer wall of the installation box, a second storage box is fixedly connected to one side of the outer wall of the installation box, and probes are slidably connected inside the two first storage boxes. The present invention ensures that the connecting wires can be wound and stored in an orderly manner by setting a winding assembly, avoids the cables from being scattered in a disorderly manner in the box or entangled with other components, and reduces the risk of damage to the cable sheath and internal wires.

Description

Technical Field

[0001] The invention belongs to the technical field of resistance detection devices, and in particular relates to an electrical grounding resistance detection device for a construction project. Background Art

[0002] With the continuous expansion of the scale of construction projects and the increasing complexity of electrical equipment, the demand for accurate detection of electrical grounding resistance has become more urgent. Traditional grounding resistance detection methods and devices often have some limitations. In the past, commonly used detection methods may not be very accurate and are easily affected by environmental factors such as soil resistivity, humidity, temperature, etc., resulting in inaccurate test results. Moreover, some old detection devices are complicated to operate and require professionals to have high skills and experience to correctly use and interpret data. In large-scale construction projects, grounding systems are widely distributed, and traditional detection devices may not be able to efficiently complete large-scale detection tasks, consuming a lot of time and manpower. In addition, with the development of electrical technology, new building materials and complex electrical systems have increasingly stringent requirements on grounding resistance. In order to meet these new needs, more advanced, more accurate, more efficient and easy-to-operate electrical grounding resistance detection devices are needed.

[0003] The existing geodetic grid ground resistance tester requires multiple connecting wires when in use. Usually, these connecting wires are generally placed directly in the box and are easily entangled with the connecting columns of the tester. When the tester needs to be used, it takes a lot of time to untangle the entangled connecting wires, which delays the test work. At the same time, the connecting wires may be squeezed and rubbed against each other during the winding process, causing damage to the cable sheath and exposure of the internal wires, thereby affecting the service life and performance of the connecting wires. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a construction engineering electrical grounding resistance detection device.

[0005] The technical solution adopted to solve the above technical problems is: an electrical grounding resistance detection device for construction projects, comprising an installation box, a cover plate rotatably connected to the rear end of the installation box, a lock buckle fixedly connected to the top of the cover plate, a hinge fixedly connected to the front end of the installation box, an isolation plate installed inside the installation box, a measuring device installed on the top of the isolation plate, a C1 interface, a P1 interface, a C2 interface, a P2 interface, a first electric block position, a second electric block position, a third electric block position, an EV button, a switch key and a display screen installed on the top of the measuring device, a sealing strip fixedly connected to the front end of the cover plate, a winding assembly and an anti-loosening assembly installed inside the installation box, first storage boxes fixedly connected to both sides of the outer wall of the installation box, a second storage box fixedly connected to one side of the outer wall of the installation box, and probes slidably connected to the insides of the two first storage boxes.

[0006] Furthermore, the first resistance barrier, the second resistance barrier and the third resistance barrier are 2Ω, 20Ω and 200Ω respectively.

[0007] Through the above technical solution, the 2Ω gear is suitable for measuring components with smaller resistance values, the 20Ω gear can be used to measure resistors with medium resistance values, and the 200Ω gear can cope with the measurement of resistors with larger resistance values. At the same time, different gears correspond to different measuring ranges, which can enable the measuring device to achieve the best accuracy within its respective measuring range.

[0008] Furthermore, a sealing groove is provided on the top of the installation box, and the inner wall of the sealing groove fits with the outer wall of the sealing strip.

[0009] Through the above technical solution, the tight fit between the sealing groove and the sealing strip can effectively prevent external dust, water vapor, impurities, etc. from entering the installation box, thereby increasing the service life of the instrument. At the same time, good sealing reduces the frequency of equipment failures, thereby reducing maintenance and repair costs.

[0010] Furthermore, the winding assembly includes a first mounting groove opened inside the mounting box, a plurality of connecting tubes and springs are fixedly connected to the rear end of the inner wall of the first mounting groove, a plurality of connecting tubes inner walls are slidably connected to a linkage rod, a plurality of linkage rods outer walls are rotatably connected to two linkage plates, two locking grooves are opened between the plurality of connecting tubes and the winding wheels, a plurality of linkage plates are rotatably connected to locking blocks at the other ends, a plurality of linkage plates are rotatably connected to support rods at the top centers, a plurality of connecting tubes outer walls are slidably connected to the winding wheels, a plurality of connecting tubes inner walls front ends are fixedly connected to limiting rings, and a plurality of linkage rod outer walls front ends are fixedly connected to limiting disks.

[0011] Through the above technical solution, first press the linkage rod to make the linkage rod move backward, and at the same time, the linkage rod will drive the corresponding two linkage plates to move synchronously, and then the two linkage plates will make circular motion along the corresponding support rods, so that the two linkage plates will drive the corresponding two locking blocks to move horizontally inward, thereby achieving the unlocking effect, and then pull out multiple winding wheels to wind their wiring harnesses, and then slide the multiple winding wheels into the installation box through the corresponding linkage rods. When the winding wheels are pushed to the specified position, the linkage rod will be reset by the spring, thereby driving the locking blocks to reset synchronously, thereby achieving the self-locking effect.

[0012] Furthermore, the plurality of springs are all located at the center of the corresponding connecting tubes, and the rear ends of the plurality of linkage rods are all fixedly connected to the front ends of the corresponding springs.

[0013] Through the above technical solution, the spring is located at the center of the connecting tube, and can evenly bear and disperse the pressure when subjected to external force, ensuring that the degree of expansion and contraction deformation of each spring is similar. At the same time, the fixed connection between the spring and the linkage rod and the arrangement in the center position can ensure accurate force transmission and improve the control accuracy of the entire system.

[0014] Furthermore, when the plurality of springs are in a normal state, the rear end of the limiting ring is tightly fitted with the front end of the limiting disk.

[0015] The above technical solution ensures that the spring expands and contracts within the normal working range, avoids permanent deformation or even damage of the spring due to excessive compression, and helps to maintain the initial preload of the spring so that it can always provide stable elastic force during operation. At the same time, the limit ring and the limit plate can effectively prevent the linkage rod from falling off, thereby achieving a limiting effect.

[0016] Furthermore, the anti-loosening component includes a plurality of second mounting grooves opened at the rear end of the installation box, a plurality of second mounting grooves are slidably connected with racks on both sides of the inner walls, a plurality of racks are fixedly connected with connecting blocks at the front ends, a plurality of connecting blocks are fixedly connected with connecting rods at the front ends, a plurality of gears are installed at the center of the inner walls of the second mounting grooves, a plurality of mounting holes are opened at the rear end of the outer wall of the installation box, a plurality of mounting holes are rotatably connected with rotating rods on the inner walls, a plurality of rotating rods are fixedly connected with knobs at the rear ends, a plurality of connecting rods are fixedly connected with anti-loosening splints at the front ends, a plurality of anti-loosening splints are fixedly connected with sliders at the front ends, and a plurality of sliding grooves are opened at the front end of the inner wall of the installation box.

[0017] Through the above technical scheme, the winding wheel with the wire harness wound around it is first slid into the outer wall of the linkage rod, and then the corresponding knob is rotated to make the knob drive the rotating rod to rotate synchronously, and then the multiple rotating rods will drive the corresponding gears to rotate synchronously. At the same time, the multiple gears will drive the corresponding racks to move up and down along the inner wall of the second mounting groove, and then the multiple racks will drive the corresponding connecting blocks to move synchronously, and the connecting blocks will drive the corresponding connecting rods to move synchronously, and then the multiple connecting rods will drive the corresponding anti-loosening clamps to move synchronously, until the inner wall of each set of anti-loosening clamps is tightly fitted with the wire harness on the outer wall of the winding wheel.

[0018] Furthermore, the plurality of gears are fixedly connected to the front ends of the corresponding outer walls of the rotating rods, and every two of the racks are meshed with the corresponding gears.

[0019] Through the above technical solution, the fixed connection ensures that there will be no relative sliding or loosening between the gear and the rotating rod during the rotation process, making the transmission process smooth and impact-free, and the precise engagement of the gear and the rack can accurately control the movement distance and speed of the rack.

[0020] Furthermore, the outer walls of the plurality of sliders are tightly fitted with the corresponding slide grooves, and the inner walls of the plurality of anti-loosening splints are matched with the outer walls of the corresponding winding wheels.

[0021] Through the above technical solution, the close fit between the slider and the slide groove can limit the freedom of the slider so that it can only perform precise linear motion along the direction of the slide groove. At the same time, the close fit can prevent the slider from loosening or dislocating during operation, thereby ensuring the normal operation of the system.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention ensures that the connecting wires can be wound and stored in an orderly manner by providing a winding assembly, thereby preventing the cables from being scattered in a disorderly manner in the box or entangled with other components, thereby reducing the risk of damage to the cable sheath and internal wires; (2) The present invention prevents the wound wires from loosening during storage or transportation by providing an anti-loosening assembly, thereby always keeping the wires in a neat and orderly state. At the same time, it prevents the cables from rubbing against each other and entangled due to looseness, thereby reducing the possibility of wear on the sheath and damage to the internal wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an appearance diagram of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 yes Figure 2 Middle AA section view;

[0026] Figure 4 yes Figure 2 Middle BB section view;

[0027] Figure 5 It is a schematic diagram of the structure of the winding assembly and the anti-loosening assembly of the present invention;

[0028] Figure 6 yes Figure 1 A partial enlarged view of the middle A;

[0029] Figure 7 yes Figure 4 A partial enlarged view of point B in the middle;

[0030] Figure 8 yes Figure 4 A partial enlarged view of point C in the middle;

[0031] Fig. 9 yes Figure 4 A partial enlarged view of point D in the middle.

[0032] Figure numerals: 1, installation box; 2, cover plate; 3, lock; 4, hinge; 5, isolation plate; 6, measuring device; 7, C1 interface; 8, P1 interface; 9, C2 interface; 10, P2 interface; 11, first electric block position; 12, second electric block position; 13, third electric block position; 14, EV button; 15, switch key; 16, display screen; 17, sealing strip; 1701, sealing groove; 18, winding assembly; 1801, first installation groove; 1802, connecting pipe; 1803, spring; 1804, linkage rod; 1805, Linkage plate; 1806, locking groove; 1807, locking block; 1808, support rod; 1809, winding wheel; 1810, limiting ring; 1811, limiting disk; 19, first storage box; 20, anti-loosening assembly; 2001, second mounting groove; 2002, rack; 2003, connecting block; 2004, connecting rod; 2005, gear; 2006, mounting hole; 2007, rotating rod; 2008, knob; 2009, anti-loosening splint; 2010, slider; 2011, slide groove; 21, second storage box; 22, probe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] like Figure 1 - Fig. 9As shown, a construction engineering electrical grounding resistance detection device of the present embodiment includes an installation box 1, a cover plate 2 is rotatably connected to the rear end of the installation box 1, a lock buckle 3 is fixedly connected to the top of the cover plate 2, a hinge 4 is fixedly connected to the front end of the installation box 1, an isolation plate 5 is installed inside the installation box 1, a measuring device 6 is installed on the top of the isolation plate 5, a C1 interface 7, a P1 interface 8, a C2 interface 9, a P2 interface 10, a first electric block 11, a second electric block 12 and a third electric block 13 are installed on the top of the measuring device 6, and the first electric block 11, the second electric block 12 and the third electric block 13 are 2Ω, 20Ω and 200Ω respectively; the 2Ω position is suitable for measuring components with smaller resistance values, and the 20Ω position can be used to measure medium The 200Ω gear position can cope with the measurement of resistors with equal resistance values. At the same time, different gear positions correspond to different measuring ranges, which can enable the measuring device 6 to achieve the best accuracy within their respective measuring ranges. The EV button 14, the switch key 15 and the display screen 16, the front end of the cover plate 2 is fixedly connected with a sealing strip 17, and a sealing groove 1701 is opened on the top of the installation box 1, and the inner wall of the sealing groove 1701 fits with the outer wall of the sealing strip 17; the close fit between the sealing groove 1701 and the sealing strip 17 can effectively prevent external dust, water vapor, impurities, etc. from entering the interior of the installation box 1, thereby increasing the service life of the instrument. At the same time, good sealing reduces the frequency of equipment failures, thereby reducing the cost of maintenance and repair;

[0035] like Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9As shown, a winding assembly 18 and an anti-loosening assembly 20 are installed inside the installation box 1. The winding assembly 18 includes a first installation groove 1801 opened inside the installation box 1. The rear end of the inner wall of the first installation groove 1801 is fixedly connected with multiple connecting pipes 1802 and springs 1803. The inner walls of the multiple connecting pipes 1802 are slidably connected with linkage rods 1804. The outer walls of the multiple linkage rods 1804 are rotatably connected with two linkage plates 1805. Two locking grooves 1806 are opened between the multiple connecting pipes 1802 and the winding wheel 1809. The other ends of the multiple linkage plates 1805 are rotatably connected with locking blocks 1807. The top centers of the multiple linkage plates 1805 are rotatably connected with support rods 180 8. The outer walls of the multiple connecting tubes 1802 are slidably connected with the winding wheels 1809, the front ends of the inner walls of the multiple connecting tubes 1802 are fixedly connected with the limiting rings 1810, and the front ends of the outer walls of the multiple linkage rods 1804 are fixedly connected with the limiting disks 1811; first, press the linkage rod 1804 to make the linkage rod 1804 move backward. At the same time, the linkage rod 1804 will drive the corresponding two linkage plates 1805 to move synchronously, and then the two linkage plates 1805 will make a circular motion along the corresponding support rods 1808, so that the two linkage plates 1805 will drive the corresponding two locking blocks 1807 to move inward, thereby achieving the unlocking effect, and then pull out the multiple winding wheels 1809. 09 winds up its wiring harness, and then slides multiple winding wheels 1809 into the installation box 1 through corresponding linkage rods 1804. When the winding wheels 1809 are pushed to the specified position, the linkage rods 1804 will be reset through the springs 1803, thereby driving the locking block 1807 to reset synchronously, thereby achieving a self-locking effect. Multiple springs 1803 are all located at the center of the corresponding connecting tube 1802, and the rear ends of multiple linkage rods 1804 are fixedly connected to the front ends of the corresponding springs 1803; the springs 1803 are located at the center of the connecting tube 1802, and can evenly withstand and disperse pressure when subjected to external force, ensuring that the degree of expansion and contraction deformation of each spring 1803 is similar, and At the same time, the fixed connection between the spring 1803 and the linkage rod 1804 and the arrangement in the center position can ensure accurate force transmission and improve the control accuracy of the entire system. When multiple springs 1803 are in a normal state, the rear end of the limit ring 1810 is tightly fitted with the front end of the limit plate 1811; ensuring that the spring 1803 is extended and retracted within the normal working range, avoiding permanent deformation or even damage of the spring 1803 due to excessive compression, and helping to maintain the initial preload of the spring 1803, so that it can always provide stable elastic force during operation. At the same time, the limit ring 1810 and the limit plate 1811 can effectively prevent the linkage rod 1804 from falling off, thereby achieving a limiting effect;

[0036] like Figure 3 , Figure 5 and Fig. 9As shown, both sides of the outer wall of the installation box 1 are fixedly connected to the first storage box 19, one side of the outer wall of the installation box 1 is fixedly connected to the second storage box 21, the two first storage boxes 19 are slidably connected to the inside of the two probes 22, the anti-loosening component 20 includes a plurality of second installation slots 2001 opened at the rear end of the installation box 1, both sides of the inner walls of the plurality of second installation slots 2001 are slidably connected to racks 2002, the front ends of the plurality of racks 2002 are fixedly connected to connecting blocks 2003, the front ends of the plurality of connecting blocks 2003 are fixedly connected to connecting rods 2004, the centers of the inner walls of the plurality of second installation slots 2001 are installed with gears 2005, the rear end of the outer wall of the installation box 1 is provided with a plurality of mounting holes 2006, and the plurality of mounting holes 2007 are provided at the inner wall of the plurality of second installation slots 2001. The inner wall of the hole 2006 is rotatably connected with a rotating rod 2007, and the rear ends of the multiple rotating rods 2007 are fixedly connected with knobs 2008, the front ends of the multiple connecting rods 2004 are fixedly connected with anti-loosening clamps 2009, and the front ends of the multiple anti-loosening clamps 2009 are fixedly connected with sliders 2010, and the front end of the inner wall of the installation box 1 is provided with multiple sliding grooves 2011; first, the winding wheel 1809 with the wire harness wound is slid into the outer wall of the linkage rod 1804, and then the corresponding knob 2008 is rotated to make the knob 2008 drive the rotating rod 2007 to rotate synchronously, and then the multiple rotating rods 2007 will drive the corresponding gears 2005 to rotate synchronously, and at the same time, the multiple gears 2005 will drive the corresponding The corresponding racks 2002 move up and down along the inner wall of the second mounting groove 2001, and then the multiple racks 2002 will drive the corresponding connecting blocks 2003 to move synchronously, and the connecting blocks 2003 will drive the corresponding connecting rods 2004 to move synchronously, and then the multiple connecting rods 2004 will drive the corresponding anti-loosening clamps 2009 to move synchronously, until the inner wall of each set of anti-loosening clamps 2009 is tightly fitted with the wire harness of the outer wall of the winding wheel 1809, and the multiple gears 2005 are fixedly connected to the front end of the outer wall of the corresponding rotating rod 2007, and every two racks 2002 are meshed with the corresponding gears 2005; the fixed connection ensures that the gears 2005 are in contact with the rotating rod 2007 during the rotation process. 7 will not slide or loosen relative to each other, so that the transmission process is smooth and impact-free, and the precise meshing of the gear 2005 and the rack 2002 can accurately control the moving distance and speed of the rack 2002, the outer walls of the plurality of sliders 2010 are tightly fitted with the corresponding slide grooves 2011, and the inner walls of the plurality of anti-loosening splints 2009 are matched with the outer walls of the corresponding winding wheel 1809; the tight fit between the slider 2010 and the slide groove 2011 can limit the freedom of the slider 2010, so that it can only perform precise linear motion along the direction of the slide groove 2011. At the same time, the tight fit can prevent the slider 2010 from loosening or dislocating during operation, thereby ensuring the normal operation of the system.

[0037] The working principle of this embodiment is as follows: first, the linkage rod 1804 is pressed to make the linkage rod 1804 move backward. At the same time, the linkage rod 1804 will drive the corresponding two linkage plates 1805 to move synchronously. Then, the two linkage plates 1805 will make circular motions along the corresponding support rods 1808, so that the two linkage plates 1805 will drive the corresponding two locking blocks 1807 to move inward, thereby achieving the unlocking effect. Then, multiple winding wheels 1809 are pulled out to wind their wiring harnesses, and then the multiple winding wheels 1809 are slidably connected into the installation box 1 through the corresponding linkage rods 1804. When the winding wheels 1809 are pushed to the specified position, the linkage rod 1804 will be reset by the spring 1803, thereby driving the locking blocks. 1807 is reset synchronously, and then the corresponding knob 2008 is rotated so that the knob 2008 drives the rotating rod 2007 to rotate synchronously, and then the multiple rotating rods 2007 will drive the corresponding gears 2005 to rotate synchronously. At the same time, the multiple gears 2005 will drive the corresponding racks 2002 to move up and down along the inner wall of the second mounting groove 2001, and then the multiple racks 2002 will drive the corresponding connecting blocks 2003 to move synchronously, and the connecting blocks 2003 will drive the corresponding connecting rods 2004 to move synchronously, and then the multiple connecting rods 2004 will drive the corresponding anti-loosening splints 2009 to move synchronously, until the inner wall of each set of anti-loosening splints 2009 is tightly fitted with the wire harness of the outer wall of the winding wheel 1809, thereby achieving the anti-loosening effect.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A construction engineering electrical grounding resistance detection device, comprising an installation box (1), characterized in that: The rear end of the installation box (1) is rotatably connected to a cover plate (2), the top of the cover plate (2) is fixedly connected to a lock buckle (3), the front end of the installation box (1) is fixedly connected to a hinge (4), an isolation plate (5) is installed inside the installation box (1), a measuring device (6) is installed on the top of the isolation plate (5), and a C1 interface (7), a P1 interface (8), a C2 interface (9), a P2 interface (10), a first electric block position (11), a second electric block position (12), a third electric block position (13), an EV button (14), a switch key (15) and a display The invention relates to a display screen (16), wherein the front end of the cover plate (2) is fixedly connected to a sealing strip (17), the installation box (1) is internally installed with a winding assembly (18) and an anti-loosening assembly (20), the winding assembly (18) comprises a first installation groove (1801) opened inside the installation box (1), the rear end of the inner wall of the first installation groove (1801) is fixedly connected to a plurality of connecting tubes (1802) and a spring (1803), the inner walls of the plurality of connecting tubes (1802) are slidably connected to a linkage rod (1804), and the outer walls of the plurality of linkage rods (1804) are rotatably connected to two linkage plates (1805 ), two locking grooves (1806) are provided between the plurality of connecting tubes (1802) and the winding wheel (1809), the other ends of the plurality of linkage plates (1805) are rotatably connected to a locking block (1807), the top centers of the plurality of linkage plates (1805) are rotatably connected to a support rod (1808), the outer walls of the plurality of connecting tubes (1802) are slidably connected to the winding wheel (1809), the front ends of the inner walls of the plurality of connecting tubes (1802) are fixedly connected to a limiting ring (1810), and the front ends of the outer walls of the plurality of linkage rods (1804) are fixedly connected to a limiting disk (1810). 11); the plurality of springs (1803) are all located at the center of the corresponding connecting tube (1802); the rear ends of the plurality of linkage rods (1804) are fixedly connected to the front ends of the corresponding springs (1803); when the plurality of springs (1803) are in a normal state, the rear end of the limit ring (1810) is tightly fitted with the front end of the limit plate (1811); the first storage box (19) is fixedly connected to both sides of the outer wall of the installation box (1); the second storage box (21) is fixedly connected to one side of the outer wall of the installation box (1); and the probes (22) are slidably connected inside the two first storage boxes (19).

2. The construction engineering electrical grounding resistance detection device according to claim 1, characterized in that: The first resistance barrier (11), the second resistance barrier (12), and the third resistance barrier (13) are 2Ω, 20Ω, and 200Ω respectively.

3. The construction engineering electrical grounding resistance detection device according to claim 1, characterized in that: A sealing groove (1701) is provided on the top of the installation box (1), and the inner wall of the sealing groove (1701) fits with the outer wall of the sealing strip (17).

4. The construction engineering electrical grounding resistance detection device according to claim 3, characterized in that: The anti-loosening assembly (20) comprises a plurality of second installation grooves (2001) provided at the rear end of the installation box (1), the inner walls of the plurality of second installation grooves (2001) are slidably connected to racks (2002) on both sides, the front ends of the plurality of racks (2002) are fixedly connected to connecting blocks (2003), the front ends of the plurality of connecting blocks (2003) are fixedly connected to connecting rods (2004), the inner walls of the plurality of second installation grooves (2001) are centrally mounted with gears (2005), and the installation A plurality of mounting holes (2006) are provided at the rear end of the outer wall of the box (1); the inner walls of the plurality of mounting holes (2006) are rotatably connected to a rotating rod (2007); the rear ends of the plurality of rotating rods (2007) are fixedly connected to a knob (2008); the front ends of the plurality of connecting rods (2004) are fixedly connected to an anti-loosening clamp (2009); the front ends of the plurality of anti-loosening clamps (2009) are fixedly connected to a slider (2010); and the front end of the inner wall of the mounting box (1) is provided with a plurality of sliding grooves (2011).

5. The construction engineering electrical grounding resistance detection device according to claim 4, characterized in that: The plurality of gears (2005) are fixedly connected to the front ends of the outer walls of the corresponding rotating rods (2007), and every two of the racks (2002) are meshed with the corresponding gears (2005).

6. The construction engineering electrical grounding resistance detection device according to claim 4, characterized in that: The outer walls of the plurality of sliding blocks (2010) are tightly fitted with the corresponding sliding grooves (211), and the inner walls of the plurality of anti-loosening splints (2009) are matched with the outer walls of the corresponding winding wheels (1809).

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