A protective grounding device for construction sites

Abstract

This utility model discloses a protective grounding device for construction sites, including a support base and a lead rod. The lead rod is internally installed in the support base and is movably connected to it. A nut is threaded onto the surface of the lead rod. Three sets of equally spaced linkage arms are arranged on the side wall of the nut. Each linkage arm has an upper movable shaft at its end near the nut, and the linkage arm is movably connected to the nut via the upper movable shaft. A connecting line is provided on the surface of the nut. Three sets of equally spaced support arms are arranged on the side wall of the support base. Each support arm has a pin at its end near the support base, and the support arm is movably connected to the support base via the pin. This utility model not only achieves convenient multi-position grounding connection to prevent grounding conductivity failure and facilitates warning and protection of the usage location, but also improves the grounding conductivity and safety of protection.

Description

Technical Field

[0001] This utility model relates to the field of construction site protection technology, specifically a construction site protective grounding device. Background Technology

[0002] Grounding refers to the connection of the neutral point of a power system and electrical installations, the exposed conductive parts of electrical equipment, and the external conductive parts of the equipment to the earth via a conductor. It can be divided into functional grounding, lightning protection grounding, and protective grounding. On construction sites, many electrical devices, such as welding machines, cutting machines, and temporary distribution boxes, require grounding to prevent electric shock accidents. Because these devices need to be moved frequently, their grounding wires are often haphazardly wrapped around various steel structures on site or simply connected and dangled to the ground. These two grounding methods have low safety. To improve the safety of electrical equipment during use and address this low safety situation, a protective grounding device for construction sites is proposed.

[0003] A construction site grounding device, as disclosed in authorization announcement number CN113823926B, includes a grounding rod and a grounding wire. One end of the grounding wire is connected to the grounding rod. The device also includes a sleeve, a striking rod, and a friction assembly. The sleeve is coaxially fitted around the grounding rod and has an annular gap with it. A grounding hole is provided on the end face of the first end of the sleeve. The striking rod slides through the second end of the sleeve and is fixedly connected to the grounding rod. The striking rod has a degree of rotational freedom, with one end located outside the sleeve. A section of the grounding wire is embedded and fixed inside the striking rod. The friction assembly includes a sliding shaft, a friction plate, and a compression spring. The sliding shaft slides through the sleeve. The friction plate is located within the annular gap and is fixedly connected to the sliding shaft. The compression spring is fitted onto the sliding shaft, with both ends abutting against the inner wall of the sleeve and the friction plate, respectively.

[0004] While it addresses the issue of poor grounding performance after the grounding rod is inserted into the ground due to corrosion, it does not solve the problems of existing grounding devices being inconvenient for multi-location grounding connections to prevent grounding conductivity failure, and are not conducive to warning and protecting the usage location, thus affecting the effectiveness of grounding conductivity and the safety of protection. Utility Model Content

[0005] The purpose of this utility model is to provide a protective grounding device for construction sites, so as to solve the problems mentioned in the background art, such as the inconvenience of convenient multi-position grounding connection to prevent grounding conductivity failure, the difficulty in warning and protecting the use location, and the impact on the effectiveness of grounding conductivity and the safety of protection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a construction site protective grounding device, comprising a bearing seat and a lead rod, wherein the lead rod is provided inside the bearing seat and is movably connected to the bearing seat, a nut is provided on the surface of the lead rod and is threadedly connected to the lead rod, three sets of linkage arms are provided at equal intervals on the side wall of the nut, and an upper movable shaft is provided at the end of each linkage arm near the nut, and the linkage arm is movably connected to the nut through the upper movable shaft, and a connecting line is provided on the surface of the nut.

[0007] Preferably, the side wall of the bearing seat is provided with three sets of support arms at equal intervals, and each support arm is provided with a pin at the end near the bearing seat.

[0008] Preferably, the support arm is movably connected to the bearing seat via a pin, and the end of the linkage arm near the support arm is provided with a lower movable shaft.

[0009] Preferably, the linkage arm is movably connected to the support arm via a lower movable shaft, and the end of the support arm away from the bearing seat is movably equipped with a foot.

[0010] Preferably, a knob is installed at the top of the lead screw, and a placement rod is movably installed at the top of the knob.

[0011] Preferably, the side wall of the placement rod is provided with three sets of integrated frames at equal intervals, and each integrated frame is provided with a warning plate on its exterior.

[0012] Preferably, each of the integrated frames is equipped with a sliding rod, and each sliding rod has a slider symmetrically arranged on its surface, with the slider and the sliding rod being slidably connected.

[0013] Preferably, each slider has a connecting arm on its sidewall, and each connecting arm has a left hinge shaft at the end near the slider, and the connecting arm is movably connected to the slider through the left hinge shaft.

[0014] Preferably, springs are provided on the surface of the slider on one side, and the two ends of the springs are respectively connected to the integrated frame and the slider.

[0015] Preferably, each connecting arm is provided with a right hinge shaft at the end near the warning plate, and the connecting arm is movably connected to the warning plate through the right hinge shaft.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the grounding device not only realizes convenient multi-position grounding connection to prevent grounding conductivity failure and facilitates warning and protection of the use position, but also improves the grounding conductivity effect and protection safety;

[0017] The device is transported to the construction site. Holding the support base, the knob is turned, which drives the lead screw to rotate. The lead screw moves the nut, which in turn moves the linkage arm via the upper movable shaft. The linkage arm, via the lower movable shaft, moves the support arm around the pin, thus opening the three sets of support arms. The feet are then inserted into the soil, forming a triangular stable structure to prevent tipping. The feet, support arms, linkage arms, and nuts are all made of stainless steel. The electrical equipment is connected to the wiring to complete the grounding connection. The three-foot grounding design prevents loss of grounding conductivity due to damage to one foot. During operation, the warning board serves as a warning to the outside world and also marks the usage location. When subjected to external impact, the object first strikes the warning board, causing it to move. The warning board then rotates the connecting arm via the right hinge shaft, which in turn rotates the slider on the surface of the slide rod via the left hinge shaft. The slider compresses the spring, causing it to contract. With the elasticity of the spring, the spring counteracts the force, thus protecting the device. This design enables convenient multi-position grounding connections to prevent grounding failure, facilitates warning and protection of the usage location, and improves the effectiveness of grounding and the safety of protection. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side sectional view of the present invention.

[0020] Figure 3 This is a three-dimensional perspective structural diagram of the support base of this utility model;

[0021] Figure 4 This is a side cross-sectional view of the integrated frame of this utility model.

[0022] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Foot; 2. Support arm; 3. Bearing seat; 4. Nut; 5. Knob; 6. Warning plate; 7. Placement rod; 8. Integrated frame; 9. Lead screw; 10. Upper movable shaft; 11. Linkage arm; 12. Lower movable shaft; 13. Pin; 14. Slide rod; 15. Slider; 16. Spring; 17. Right hinge shaft; 18. Connecting arm; 19. Left hinge shaft; 20. Connecting line. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please see Figure 1-5 An embodiment of this utility model provides a construction site protective grounding device, including a bearing seat 3 and a lead rod 9. The lead rod 9 is provided inside the bearing seat 3 and is movably connected to the bearing seat 3. A nut 4 is provided on the surface of the lead rod 9 and is threadedly connected to the lead rod 9. Three sets of linkage arms 11 with equal spacing are provided on the side wall of the nut 4. Each linkage arm 11 has an upper movable shaft 10 at the end near the nut 4 and is movably connected to the nut 4 through the upper movable shaft 10. A connecting line 20 is provided on the surface of the nut 4. Three sets of support arms 2 with equal spacing are provided on the side wall of the bearing seat 3. Each support arm 2 has a pin 13 at the end near the bearing seat 3 and is movably connected to the bearing seat 3 through the pin 13. Each linkage arm 11 has a lower movable shaft 12 at the end near the support arm 2 and is movably connected to the support arm 2 through the lower movable shaft 12. Each support arm 2 has a foot 1 movably installed at the end away from the bearing seat 3.

[0026] A knob 5 is installed at the top of the lead screw 9, and a placement rod 7 is movably installed at the top of the knob 5. Three sets of integrated frames 8 with equal spacing are provided on the side wall of the placement rod 7, and a warning plate 6 is provided on the outside of each integrated frame 8.

[0027] The integrated frame 8 is equipped with a slide rod 14 inside. The surface of the slide rod 14 is symmetrically provided with sliders 15, and the sliders 15 are slidably connected to the slide rod 14. The side wall of the slider 15 is provided with a connecting arm 18. The end of the connecting arm 18 near the slider 15 is provided with a left hinge shaft 19, and the connecting arm 18 is movably connected to the slider 15 through the left hinge shaft 19.

[0028] Springs 16 are provided on the surface of the slide rod 14 on one side of the slider 15, and the two ends of the springs 16 are connected to the integrated frame 8 and the slider 15 respectively.

[0029] Each connecting arm 18 is provided with a right hinge shaft 17 at one end near the warning plate 6, and the connecting arm 18 is movably connected to the warning plate 6 through the right hinge shaft 17.

[0030] The device is transported to the construction site. Holding the support base 3, the knob 5 is turned, which drives the lead screw 9 to rotate. With the lead screw 9 and nut 4 connected by threads, the lead screw 9 moves the nut 4. The nut 4 drives the linkage arm 11 to rotate via the upper movable shaft 10. The linkage arm 11 drives the support arm 2 to rotate around the pin 13 via the lower movable shaft 12, thus opening the three sets of support arms 2. Then, the foot 1 is inserted into the soil to form a triangular stable structure to prevent it from tipping over. The foot 1, support arm 2, linkage arm 11, and nut 4 are all made of stainless steel. The electrical equipment is connected to the connecting wire 20 to complete the grounding connection of the electrical equipment. The grounding design of the three sets of foot 1 can prevent the loss of grounding due to the damage of one set of foot 1. The electrical function is as follows: during use, the warning plate 6 serves to warn of external influences and mark the usage location. When subjected to external impact, the object first strikes the warning plate 6, causing it to move. The warning plate 6 then rotates the connecting arm 18 via the right hinge shaft 17. The connecting arm 18 then drives the slider 15 to slide on the surface of the slide rod 14 via the left hinge shaft 19. The slider 15 compresses the spring 16, causing it to contract. With the elastic cooperation of the spring 16, the force is offset, thus protecting the device. This achieves convenient multi-position grounding connection to prevent grounding conductivity failure, facilitates warning and protection of the usage location, and improves the effectiveness of grounding conductivity and the safety of protection.

[0031] Working principle: Rotating knob 5 drives screw 9 to rotate, which in turn moves nut 4. Nut 4, via upper movable shaft 10, drives linkage arm 11 to rotate. Linkage arm 11, via lower movable shaft 12, drives support arm 2 to rotate around pin 13, thus opening the three sets of support arms 2. Then, the grounding feet 1 are inserted into the soil, forming a triangular stable structure to prevent tipping. Grounding feet 1, support arms 2, linkage arm 11, and nut 4 are all made of stainless steel. Connecting the electrical equipment to the connecting wire 20 completes the grounding connection. The grounding design of the three sets of grounding feet 1 prevents grounding failure due to a single set of grounding feet. 1. When damaged and losing its grounding and conductivity function, the warning plate 6 serves as a warning to the outside world during use and can also mark the usage location. When subjected to external impact, the object first hits the warning plate 6 and moves it. The warning plate 6 then rotates the connecting arm 18 via the right hinge shaft 17. The connecting arm 18 then slides the slider 15 on the surface of the slide rod 14 via the left hinge shaft 19. The slider 15 compresses the spring 16 and causes the spring 16 to contract. The spring 16 then counteracts this force, thus protecting the device. The above is the complete usage of the protective grounding device for construction sites.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A protective grounding device for construction sites, comprising a bearing base and a lead rod, characterized in that: The bearing seat is equipped with a lead screw inside, and the lead screw is movably connected to the bearing seat. The surface of the lead screw is equipped with a nut, and the nut is threadedly connected to the lead screw. Three sets of linkage arms are provided at equal intervals on the side wall of the nut. Each linkage arm is equipped with an upper movable shaft at the end near the nut, and the linkage arm is movably connected to the nut through the upper movable shaft. The surface of the nut is equipped with connecting lines.

2. The construction site protective grounding device according to claim 1, characterized in that: The side wall of the bearing seat is provided with three sets of support arms at equal intervals, and each support arm is provided with a pin at the end near the bearing seat.

3. A protective grounding device for construction sites according to claim 2, characterized in that: The support arm is movably connected to the bearing seat via a pin, and each of the linkage arms has a lower movable shaft at one end near the support arm.

4. A protective grounding device for construction sites according to claim 3, characterized in that: The linkage arm is movably connected to the support arm via a lower movable shaft, and the end of the support arm away from the bearing seat is movably equipped with a foot.

5. A protective grounding device for construction sites according to claim 4, characterized in that: A knob is installed at the top of the lead screw, and a placement rod is movably installed at the top of the knob.

6. A protective grounding device for construction sites according to claim 5, characterized in that: The side wall of the placement rod is provided with three sets of integrated frames at equal intervals, and each integrated frame is provided with a warning plate on the outside.

7. A protective grounding device for construction sites according to claim 6, characterized in that: The integrated frame is equipped with sliding rods inside, and the surfaces of the sliding rods are symmetrically provided with sliders, which are slidably connected to the sliding rods.

8. A protective grounding device for construction sites according to claim 7, characterized in that: Each slider has a connecting arm on its side wall, and each connecting arm has a left hinge shaft at the end near the slider. The connecting arm is movably connected to the slider through the left hinge shaft.

9. A protective grounding device for construction sites according to claim 8, characterized in that: Springs are provided on the surface of the slider on one side, and the two ends of the springs are connected to the integrated frame and the slider, respectively.

10. A protective grounding device for construction sites according to claim 9, characterized in that: Each connecting arm is equipped with a right hinge shaft at the end near the warning plate, and the connecting arm is movably connected to the warning plate through the right hinge shaft.

Images