A geoelectrically isolated portable electric field measurement device

Abstract

The present invention relates to the technical field of electric field measurement, and particularly relates to a portable electric field measurement device with ground electrical isolation, which includes two support rods symmetrically arranged on the ground. It also includes a controller, an electric field probe, a folding mechanism, a height adjustment mechanism, and an isolation mechanism. The folding mechanism includes two connection components and several connecting rods. The height adjustment mechanism includes two sliding components and two locking components. The isolation mechanism includes two moisture absorption components, two dehumidification components, and two automatic retracting and extending components. Each dehumidification component is arranged on the outer wall of the top of an inner rod, and each automatic retracting and extending component is arranged between the top of an inner rod and one end of the electric field probe. The electric field probe is electrically connected to the controller. The portable electric field measurement device with ground electrical isolation according to the present invention is convenient for storage and carrying, has a faster detection speed, can prevent the ground potential from being introduced near the electric field probe, and has higher accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of electric field measurement, and particularly relates to a portable electric field measurement device with earth - electricity isolation. Background Art

[0002] Spatial electric field measurement is a necessary index in electromagnetic environment testing. Generally, a tripod is used to support the probe for testing.

[0003] Existing electric field measurement devices have the following deficiencies:

[0004] 1. When the humidity of the measured space environment is relatively high, after the support feet of the device absorb moisture for a long time, there are fine water molecules on the surface, resulting in the ground potential being led to the vicinity of the probe, thereby affecting the accuracy of the electric field measurement result. It is necessary to dry the bracket or support feet of the device before measurement, which reduces the detection efficiency and increases the measurement cost.

[0005] 2. The overall frame of the device is usually large, which is not convenient for storage and carrying, reducing the portability.

[0006] 3. It is impossible to adjust the height of the electric field probe to be of equal length, so it is impossible to measure the electric field distribution at different heights in the same space environment, and the flexibility and practicability of the device are relatively low. Summary of the Invention

[0007] The purpose of the present invention is to provide a portable electric field measurement device with earth - electricity isolation.

[0008] To achieve this purpose, the present invention adopts the following technical solutions:

[0009] Provide a portable electric field measurement device with earth - electricity isolation,

[0010] including two support rods, the two support rods are symmetrically arranged on the ground,

[0011] further including a controller, an electric field probe, a folding mechanism, a height - adjusting mechanism and an isolation mechanism,

[0012] The electric field probe is arranged between the tops of the two support rods,

[0013] The folding mechanism is arranged between the two support rods. The folding mechanism includes two connection components and several connecting rods. Each connection component is arranged on the outer wall of a support rod. The several connecting rods are hinged between the two connection components, and the middle parts of every two adjacent connecting rods are hinged. Each support rod includes an inner rod and a sleeve rod. The sleeve rod is arranged on the ground, and the inner rod is inserted into the inside of the sleeve rod.

[0014] The height adjustment mechanism is arranged at the bottom of the two support rods. The height adjustment mechanism includes two sliding components and two locking components. Each sliding component is arranged at the bottom of an inner rod, and each locking component is arranged inside a sleeve rod. Each sliding component is clamped with a locking component.

[0015] The isolation mechanism is arranged on the two support rods. The isolation mechanism includes two moisture absorption components, two dehumidification components and two automatic retraction and extension components. Each moisture absorption component is arranged on the outer wall of the bottom of a sleeve rod, each dehumidification component is arranged on the outer wall of the top of an inner rod, and each automatic retraction and extension component is arranged between the top of an inner rod and one end of the electric field probe. The electric field probe is electrically connected to the controller.

[0016] Furthermore, a cross plate is fixedly arranged at the top of each inner rod, and the two cross plates are slidably connected. The electric field probe is fixedly connected to the outer wall of one of the cross plates.

[0017] Furthermore, each automatic retraction and extension component includes an insulating wire, a wire winding disc, a rack, a gear and a return spring. The wire winding disc is rotatably arranged on the outer wall of the top of the inner rod through a hinge shaft. The insulating property is fixedly arranged at one end of the electric field probe, and the other end is wound and connected to the wire winding disc. The gear is sleeved on the hinge shaft. A guide rail is fixedly arranged on the outer wall of the top of the inner rod. The rack is slidably connected to the guide rail. The return spring is fixedly arranged between the bottom of the rack and the inner wall of the guide rail. The rack is meshed with the gear.

[0018] Furthermore, each dehumidification component includes a mounting plate and a plurality of cylindrical absorbent cotton. The mounting plate is fixedly arranged on the outer wall of the top of the inner rod. A plurality of rotating shafts are equidistantly arranged on the top of the mounting plate. Each cylindrical absorbent cotton is sleeved on the outer wall of a rotating shaft. The insulating wire passes through the plurality of cylindrical absorbent cotton.

[0019] Furthermore, each moisture absorption component includes a sliding sleeve, a containing box and a strip-shaped absorbent sponge. The sliding sleeve is slidably arranged at the bottom of the sleeve rod. Four support feet are fixedly arranged at the four corners of the bottom of the sliding sleeve. The containing box is inserted on the outer walls of the four support feet. The top of the containing box is attached to the bottom of the sliding sleeve. The strip-shaped absorbent sponge is inserted inside the containing box.

[0020] Furthermore, each sliding component includes a slider and two insertion rods. The two insertion rods are fixedly arranged at the bottom of the inner rod. A limiting plate is fixedly arranged at the top of each sleeve rod. The two insertion rods pass through one of the limiting plates and extend into the sleeve rod. The slider is fixedly arranged between the bottoms of the two insertion rods.

[0021] Further, each locking component includes a limiting block, a plurality of hemispherical buckles and a plurality of pressing springs. The limiting block is fixedly arranged on the inner wall of the sleeve rod. A through groove for the limiting block to pass through is arranged on the sliding block. A plurality of circular holes are equidistantly arranged on the outer wall of the limiting block. Each hemispherical buckle is slidably arranged on a circular hole. Each pressing spring is fixedly arranged between a hemispherical buckle and the inner wall of a circular hole. A clamping groove for the hemispherical buckle to insert is arranged on the inner wall of the through groove. A wedge-shaped notch for facilitating the hemispherical buckle to quickly enter the through groove is arranged at the top of the through groove. One of the hemispherical buckles is clamped with the clamping groove.

[0022] Further, each connecting component includes a lifting block, two limiting rods and two guide posts. The two limiting rods are fixedly arranged at the top of the inner rod. The two guide posts are fixedly arranged at the bottom of the inner rod. The lifting block is slidably arranged on the outer walls of the two guide posts. The top of one of the connecting rods close to the inner rod is hinged with the two limiting rods. The bottom of one of the connecting rods close to the inner rod is hinged with the lifting block.

[0023] Further, two transmission wheels are rotatably arranged on the outer wall of each cross plate. Limiting grooves are arranged on the outer walls of the circumferential directions of each transmission wheel. Each insulating wire is attached to the two limiting grooves.

[0024] Further, a protective shell is fixedly arranged on the outer wall of one end of each inner rod close to the rack. The two insulating wires both pass through the protective shell.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. By designing a folding mechanism, namely two connecting components and a plurality of connecting rods, the present invention can be quickly opened and folded by two inspectors. When opened, the device performs electric field detection. When folded, the overall frame of the device shrinks, thus facilitating storage and carrying and improving the portability of the device.

[0027] 2. By designing a moisture absorption component, namely a sliding sleeve, a containing box and a strip-shaped water-absorbing sponge, during the detection process, when the ground humidity is high, tiny water molecules first adhere to the four support feet and then are transmitted from the support feet to the containing box. When being transmitted to the containing box, they are absorbed by the strip-shaped water-absorbing cotton inside, so that there is no need to replace due to moisture absorption of the support feet. While ensuring the detection accuracy, there is no need to frequently replace accessories, which is beneficial to reducing the detection cost of the electric field and prolonging the service life of the device. At the same time, by designing the sliding sleeve, it is convenient to quickly disassemble the containing box and the sliding sleeve from the support rod, improving the speed of replacing the support feet, and thus being beneficial to improving the maintenance efficiency of the device.

[0028] 3. The present invention designs two dehumidification components and two automatic winding and unwinding components. During the opening process of the device, that is, when the two inner rods move away from each other, since the winding disc is rotationally connected to the inner rod through a hinge shaft, and the gear is meshed with the rack, and because one end of the insulating wire is fixedly connected to the electric field probe and the other end is wound around the winding disc, the insulating wire is unwound from the winding disc, thus driving the gear to rotate counterclockwise, further driving the rack to rise, and the return spring changes from a taut state to an extended state. When each measurement is completed and the device is retracted, that is, when the two support rods approach each other, the insulating wire is no longer pulled by the electric field probe, so that the return spring changes from an extended state to a taut state, further driving the rack to descend, and further driving the gear to rotate clockwise to wind up the insulating wire. During the winding process of the insulating wire, since the insulating wire passes through several cylindrical water-absorbing cotton, the small water molecules absorbed on its outer wall are absorbed into several cylindrical water-absorbing cotton, achieving a dehumidification effect. When used next time, the dryness of the insulating wire can be ensured, preventing the ground potential from being introduced near the electric field probe and ensuring the accuracy of electric field measurement. At the same time, the electric field probe is grounded. When a leakage occurs, the current is connected to the ground through the two insulating wires and the two support rods, reducing potential safety hazards and avoiding electric shock accidents, thus ensuring the safety of the detection personnel.

[0029] 4. The present invention designs a height adjustment mechanism, namely two sliding components and two locking components, to quickly adjust the overall height of the support rod through the two sliding components and lock it through the two locking components, thereby realizing the adjustment of the insertion stroke of the inner rod in the sleeve rod to achieve the effect of adjusting the height of the electric field probe. Due to the equidistant design of several hemispherical buckles, it is convenient for the detection personnel to measure the electric field distribution at different heights in the same environment, thus enhancing the practicability and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings in the embodiments of the present invention.

[0031] Figure 1 is the three-dimensional structure diagram of the present invention;

[0032] Figure 2 is the three-dimensional structure diagram of the present invention removing one of the protective shells;

[0033] Figure 3 is Figure 2 the enlarged view of part A in

[0034] Figure 4 is the three-dimensional exploded view of the sleeve rod, sliding sleeve, accommodating box and strip-shaped water-absorbing cotton of the present invention;

[0035] Figure 5Schematic three-dimensional structure diagram of the electric field probe and two cross plates of the present invention;

[0036] Figure 6 is Figure 5 the enlarged view at position B in ;

[0037] Figure 7 Cross-sectional view of the sleeve rod of the present invention;

[0038] Figure 8 is Figure 7 the enlarged view at position C in ;

[0039] Figure 9 Top view of the support rod of the present invention;

[0040] Figure 10 is Figure 9 the plane cross-sectional view along line D-D in ;

[0041] Figure 11 is Figure 10 the enlarged view at position E in ;

[0042] Figure 12 Schematic three-dimensional exploded view of the limit block and the slider of the present invention;

[0043] In the figure: support rod 1, inner rod 10, cross plate 100, transmission wheel 101, limit groove 102, protective shell 103, sleeve rod 11, electric field probe 2, folding mechanism 3, connection assembly 30, lifting block 300, limit rod 301, guide post 302, connecting rod 31, height adjustment mechanism 4, sliding assembly 40, slider 400, inserting rod 401, limit plate 402, locking assembly 41, limit block 410, hemispherical buckle 411, abutting spring 412, through groove 413, wedge-shaped notch 414, isolation mechanism 5, moisture absorption assembly 50, sliding sleeve 500, accommodating box 501, strip-shaped water-absorbing sponge 502, support foot 503, dehumidification assembly 51, mounting plate 510, cylindrical water-absorbing cotton 511, automatic retracting and releasing assembly 52, insulating wire 520, wire winding disc 521, rack 522, gear 523, return spring 524. Detailed implementation manners

[0044] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0045] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product.

[0046] Refer to Figure 1As shown in the figure, the present invention provides a technical solution, a geoelectrically isolated portable electric field measurement device, including two support rods 1, and the two support rods 1 are symmetrically arranged on the ground.

[0047] It further includes a controller, an electric field probe 2, a folding mechanism 3, a height adjustment mechanism 4 and an isolation mechanism 5.

[0048] The electric field probe 2 is arranged between the tops of the two support rods 1.

[0049] The folding mechanism 3 is arranged between the two support rods 1. The folding mechanism 3 includes two connecting components 30 and several connecting rods 31. Each connecting component 30 is arranged on the outer wall of one support rod 1. The several connecting rods 31 are hinged between the two connecting components 30, and the middle parts of every two adjacent connecting rods 31 are hinged. Each support rod 1 includes an inner rod 10 and a sleeve rod 11. The sleeve rod 11 is arranged on the ground, and the inner rod 10 is inserted into the inside of the sleeve rod 11.

[0050] The height adjustment mechanism 4 is arranged at the bottoms of the two support rods 1. The height adjustment mechanism 4 includes two sliding components 40 and two locking components 41. Each sliding component 40 is arranged at the bottom of one inner rod 10, and each locking component 41 is arranged inside one sleeve rod 11. Each sliding component 40 is clamped with one locking component 41.

[0051] The isolation mechanism 5 is arranged on the two support rods 1. The isolation mechanism 5 includes two moisture absorption components 50, two dehumidification components 51 and two automatic retracting and releasing components 52. Each moisture absorption component 50 is arranged on the outer wall at the bottom of one sleeve rod 11, each dehumidification component 51 is arranged on the outer wall at the top of one inner rod 10, and each automatic retracting and releasing component 52 is arranged between the top of one inner rod 10 and one end of the electric field probe 2. The electric field probe 2 is electrically connected to the controller.

[0052] Referring to Figure 5 As shown in the figure, a cross plate 100 is fixedly arranged at the top of each inner rod 10. The two cross plates 100 are slidably connected. The electric field probe 2 is fixedly connected to the outer wall of one of the cross plates 100. Each inner rod 10 is fixedly connected to one cross plate 100, and the two cross plates 100 are slidably designed. The battery probe is located in the middle of the two cross plates 100. Thus, when the two support plates approach or separate from each other, the relative position of the electric field probe 2 remains unchanged, thereby ensuring the effective operation of the two automatic retracting and releasing components 52.

[0053] Referring to Figure 3As shown in the figure, each automatic retractable component 52 includes an insulating wire 520, a wire reel 521, a rack 522, a gear 523 and a return spring 524. The wire reel 521 is rotatably arranged on the outer wall of the top of the inner rod 10 through a hinge shaft. The insulating wire is fixedly arranged at one end of the electric field probe 2, and the other end is wound and connected to the wire reel 521. The gear 523 is sleeved on the hinge shaft. A guide rail is fixedly arranged on the outer wall of the top of the inner rod 10. The rack 522 is slidably connected to the guide rail. The return spring 524 is fixedly arranged between the bottom of the rack 522 and the inner wall of the guide rail. The rack 522 is meshed with the gear 523. During the opening process of the device, that is, when the two inner rods 10 move away from each other, since the wire reel 521 is rotatably connected to the inner rod 10 through the hinge shaft and the gear 523 is meshed with the rack 522, and because one end of the insulating wire 520 is fixedly connected to the electric field probe 2 and the other end is wound and connected to the wire reel 521, the insulating wire 520 is unrolled from the wire reel 521, thus driving the gear 523 to rotate counterclockwise, and then driving the rack 522 to rise. The return spring 524 changes from a taut state to an extended state. When each measurement is completed and the device is retracted, that is, when the two support rods 1 approach each other, the insulating wire 520 is no longer subjected to the pulling force of the electric field probe 2, so that the return spring 524 changes from an extended state to a taut state, driving the rack 522 to descend, further driving the gear 523 to rotate clockwise, winding the insulating wire 520 through the winding shaft, and grounding the electric field probe at the same time. When a leakage occurs, the current is connected to the ground through the two insulating wires and the two support rods, reducing the safety hazard and avoiding electric shock accidents to ensure the safety of the detection personnel.

[0054] Refer to Figure 3 As shown in the figure, each dehumidification component 51 includes a mounting plate 510 and a plurality of cylindrical absorbent cotton 511. The mounting plate 510 is fixedly arranged on the outer wall of the top of the inner rod 10. A plurality of rotating shafts are equidistantly arranged on the top of the mounting plate 510. Each cylindrical absorbent cotton 511 is sleeved on the outer wall of a rotating shaft. The insulating wire 520 passes through between the plurality of cylindrical absorbent cotton 511. During the winding process of the insulating wire 520, since the insulating wire 520 passes through between the plurality of cylindrical absorbent cotton 511, the fine water molecules absorbed on its outer wall are absorbed into the plurality of cylindrical absorbent cotton 511, achieving a dehumidification effect. When used next time, the dryness of the insulating wire 520 can be ensured, preventing the ground potential from being introduced near the electric field probe 2 and ensuring the accuracy of the electric field measurement.

[0055] Refer to Figure 4As shown, each moisture absorption component 50 includes a sliding sleeve 500, a receiving box 501 and a strip-shaped water absorbent cotton 502. The sliding sleeve 500 is slidably arranged at the bottom of the sleeve rod 11. Four support feet 503 are fixedly arranged at the four corners of the bottom of the sliding sleeve 500. The receiving box 501 is inserted on the outer walls of the four support feet 503. The top of the receiving box 501 is attached to the bottom of the sliding sleeve 500. The strip-shaped water absorbent cotton is inserted inside the receiving box 501. During the detection process, when the ground humidity is high, tiny water molecules first adhere to the four support feet 503, and then are transmitted from the support feet 503 to the receiving box 501. When being transmitted to the receiving box 501, they are absorbed by the strip-shaped water absorbent cotton inside it. Thus, there is no need to replace due to the moisture absorption of the support feet 503. While ensuring the detection accuracy, there is no need to frequently replace accessories, which is beneficial to reducing the detection cost of the electric field and prolonging the service life of this device. At the same time, by designing the sliding sleeve 500, it is convenient to quickly disassemble the receiving box 501 and the sliding sleeve 500 from the support rod 1, improving the speed of replacing the support feet 503, and thus being beneficial to improving the maintenance efficiency of this device.

[0056] Refer to Figure 8 As shown, each sliding component 40 includes a slider 400 and two insertion rods 401. The two insertion rods 401 are fixedly arranged at the bottom of the inner rod 10. A limit plate 402 is fixedly arranged at the top of each sleeve rod 11. The two insertion rods 401 pass through one of the limit plates 402 and extend into the sleeve rod 11. The slider 400 is fixedly arranged between the bottoms of the two insertion rods 401. When it is necessary to adjust the height of the whole of the two support rods 1 and the electric field probe 2 thereon, each detector holds the sleeve rod 11 with one hand to keep the sleeve rod 11 stationary, and holds the inner rod 10 with the other hand and lifts it upward, that is, pulls it out towards the end far from the sleeve rod 11. Since the inner rod 10 is fixedly connected to the slider 400 through the two insertion rods 401, the slider 400 is driven to rise inside the sleeve rod 11. The limit plate 402 plays a role in limiting the two insertion rods 401 to ensure the smooth rise of the slider 400.

[0057] Refer to Figure 11As shown, each locking assembly 41 includes a limit block 410, a plurality of hemispherical buckles 411 and a plurality of retaining springs 412. The limit block 410 is fixedly arranged on the inner wall of the sleeve rod 11, and the slider 400 is provided with a through groove 413 for the limit block 410 to pass through. A plurality of circular holes are evenly spaced on the outer wall of the limit block 410, and each hemispherical buckle 411 is slidably arranged on a circular hole. Each retaining spring 412 is fixedly arranged between a hemispherical buckle 411 and the inner wall of a circular hole. A slot for inserting the hemispherical buckle 411 is provided on the inner wall of the through groove 413, and a wedge-shaped notch 414 is provided on the top of the through groove 413 for facilitating the quick entry of the hemispherical buckle 411 into the through groove 413. One of the hemispherical buckles 411 is engaged with the slot. When the slider 400 rises, the first When the hemispherical buckle 411, that is, the hemispherical buckle 411 currently engaged with the slot is subjected to the resistance force of the limit block 410, the pressing spring 412 contracts, thereby causing the hemispherical buckle 411 to escape from the slot, thereby causing the second hemispherical buckle 411 to slide from the wedge-shaped notch 414 into the slot inside the through groove 413. At this time, the pressing spring 412 in the second circular hole presses the hemispherical buckle 411, thereby causing the hemispherical buckle 411 to lock the slot, thereby realizing the adjustment of the insertion stroke of the inner rod 10 in the sleeve rod 11, so as to achieve the effect of adjusting the height of the electric field probe 2. Since several hemispherical buckles 411 are designed with equal spacing, it is convenient for detection personnel to measure the electric fields at different heights in the same environment, thereby improving the practicality and flexibility of the device.

[0058] Reference Figure 2 As shown, each connecting assembly 30 includes a lifting block 300, two limiting rods 301 and two guide pillars 302. The two limiting rods 301 are fixedly arranged on the top of the inner rod 10, and the two guide pillars 302 are fixedly arranged on the bottom of the inner rod 10. The lifting block 300 is slidably arranged on the outer walls of the two guide pillars 302. The top of one of the connecting rods 31 close to the inner rod 10 is hinged to the two limiting rods 301, and the bottom of one of the connecting rods 31 close to the inner rod 10 is hinged to the lifting block 300. When the electric field is measured, the folded device is first carried to the test site by a human workpiece. When arriving at the test site, the two test rods are The test personnel each stand at one end and hold an inner rod 10 respectively, and pull the two inner rods 10 in opposite directions. Since a plurality of connecting rods 31 are hinged between the two connecting components 30, and the middle parts of every two adjacent connecting rods 31 are hinged, and because the lifting block 300 is slidably arranged on the outer walls of the two guide columns 302, the top of one of the connecting rods 31 close to the inner rod 10 is hinged to the two limit rods 301, and the bottom of one of the connecting rods 31 close to the inner rod 10 is hinged to the lifting block 300, thereby making the two support rods 1 move away from each other, that is, the device is transformed from a folded state to an open state, and the present application shows the unfolded state.

[0059] Reference Figure 6As shown, two transmission wheels 101 are rotatably provided on the outer wall of each cross plate 100. Limiting grooves 102 are provided on the outer wall of each transmission wheel 101 in the circumferential direction. Each insulating wire 520 is in contact with two limiting grooves 102. The limiting grooves 102 are used to limit the insulating wire 520, and the transmission wheels 101 facilitate the winding and unwinding of the insulating wire 520 along a predetermined trajectory, so as to facilitate the winding disc 521 to automatically wind and unwind the insulating wire 520.

[0060] Referring Figure 2 As shown, a protective shell 103 is fixedly provided on the outer wall of one end of each inner rod 10 close to the rack 522. Two insulating wires 520 both pass through the protective shell 103. The protective shell 103 is used to protect components such as the insulating wire 520, the winding disc 521, the rack 522, the gear 523, and the return spring 524, playing a protective role. At the same time, these components are covered to prevent exposure, which is beneficial to improving the aesthetic degree of the entire device.

[0061] The working principle of the present invention: When performing electric field measurement, first, the present device after being folded is carried to the test site by an operator. When arriving at the test site, two detection personnel stand at each end and each hold an inner rod 10, and pull the two inner rods 10 in opposite directions. Since a number of connecting rods 31 are hinged between two connecting components 30, and the middle parts of every two adjacent connecting rods 31 are hinged, and because the lifting block 300 is slidably provided on the outer walls of two guide posts 302, the top of one connecting rod 31 close to the inner rod 10 is hinged to two limiting rods 301, and the bottom of one connecting rod 31 close to the inner rod 10 is hinged to the lifting block 300. As a result, the two support rods 1 move away from each other, that is, the present device changes from the folded state to the opened state. The state shown in the present application is the unfolded state.

[0062] During the opening process of the present device, that is, during the process of the two inner rods 10 moving away from each other, since the winding disc 521 is rotatably connected to the inner rod 10 through a hinge shaft, the gear 523 is meshed with the rack 522, and because one end of the insulating wire 520 is fixedly connected to the electric field probe 2 and the other end is wound and connected to the winding disc 521, the insulating wire 520 is unwound from the winding disc 521, thus driving the gear 523 to rotate counterclockwise, and further driving the rack 522 to rise. The return spring 524 changes from the taut state to the unfolded state. When each measurement is completed and the present device is folded, that is, when the two support rods 1 move closer to each other, the insulating wire 520 is no longer subjected to the pulling force of the electric field probe 2, so that the return spring 524 changes from the unfolded state to the taut state, further driving the rack 522 to descend, and further driving the gear 523 to rotate clockwise to wind the insulating wire 520 through the winding shaft. The limiting grooves 102 are used to limit the insulating wire 520, and the transmission wheels 101 facilitate the winding and unwinding of the insulating wire 520 along a predetermined trajectory, so as to facilitate the winding disc 521 to automatically wind and unwind the insulating wire 520.

[0063] During the winding process of the insulating wire 520, the insulating wire 520 passes through several columnar absorbent cottons 511, so that the tiny water molecules absorbed on its outer wall are absorbed into the several columnar absorbent cottons 511, which has a dehumidification effect. When it is used next time, the insulating wire 520 can be kept dry, avoiding the ground potential from being led to the vicinity of the electric field probe 2, thereby ensuring the accuracy of the electric field measurement.

[0064] During the detection process, when the humidity on the ground is high, tiny water molecules first attach to the four support legs 503, and then are transferred from the support legs 503 to the containing box 501. When being transferred to the containing box 501, they are absorbed by the strip-shaped absorbent cotton inside it, so there is no need to replace the support legs 503 due to moisture absorption. While ensuring the detection accuracy, there is no need to frequently replace accessories, which is beneficial to reducing the detection cost of the electric field and extending the service life of the device. At the same time, by designing the sliding sleeve 500, the containing box 501 and the sliding sleeve 500 can be quickly disassembled from the support rod 1, which increases the speed of replacing the support legs 503, which is beneficial to improving the maintenance efficiency of the device.

[0065] When it is necessary to adjust the height of the two support rods 1 as a whole and the electric field probe 2 thereon, each inspector holds the sleeve rod 11 with one hand to keep the sleeve rod 11 stationary, and holds the inner rod 10 with the other hand to lift it upward, that is, to pull it toward the end away from the sleeve rod 11. Since the inner rod 10 is fixedly connected to the slider 400 through two plug rods 401, the slider 400 is driven to rise inside the sleeve rod 11. The limit plate 402 serves to limit the two plug rods 401 to ensure that the slider 400 rises smoothly.

[0066] When the slider 400 rises, the first hemispherical buckle 411, that is, the hemispherical buckle 411 currently engaged with the slot is subjected to the resistance force of the limit block 410, causing the pressing spring 412 to contract, thereby causing the hemispherical buckle 411 to escape from the slot, thereby causing the second hemispherical buckle 411 to slide from the wedge-shaped notch 414 into the slot inside the through groove 413. At this time, the pressing spring 412 in the second circular hole presses the hemispherical buckle 411, thereby causing the hemispherical buckle 411 to lock the slot, thereby realizing the adjustment of the insertion stroke of the inner rod 10 in the sleeve rod 11, so as to achieve the effect of adjusting the height of the electric field probe 2. Since several hemispherical buckles 411 are designed with equal spacing, it is convenient for detection personnel to measure the electric fields at different heights in the same environment, thereby improving the practicality and flexibility of the device.

[0067] The protective shell 103 is used to protect the insulated wire 520, the winding drum 521, the rack 522, the gear 523 and the return spring 524 and other components, and plays a protective role. At the same time, it covers these components to prevent exposure, which is beneficial to improving the aesthetics of the entire device.

Claims

1. A geoelectrically isolated portable electric field measurement device, comprising two support rods (1), the two support rods (1) being symmetrically arranged on the ground, characterized in that: It also includes a controller, an electric field probe (2), a folding mechanism (3), a height adjustment mechanism (4) and an isolation mechanism (5). The electric field probe (2) is arranged between the tops of two support rods (1). The folding mechanism (3) is arranged between two support rods (1). The folding mechanism (3) includes two connection components (30) and a plurality of connecting rods (31). Each connection component (30) is arranged on the outer wall of a support rod (1). A plurality of connecting rods (31) are hinged between the two connection components (30), and the middle parts of every two adjacent connecting rods (31) are hinged. Each support rod (1) includes an inner rod (10) and a sleeve rod (11). The sleeve rod (11) is arranged on the ground, and the inner rod (10) is inserted into the inside of the sleeve rod (11). The height adjustment mechanism (4) is arranged at the bottoms of two support rods (1). The height adjustment mechanism (4) includes two sliding components (40) and two locking components (41). Each sliding component (40) is arranged at the bottom of an inner rod (10). Each locking component (41) is arranged inside a sleeve rod (11). Each sliding component (40) is clamped with a locking component (41). The isolation mechanism (5) is arranged on two support rods (1). The isolation mechanism (5) includes two moisture absorption components (50), two dehumidification components (51) and two automatic retracting and releasing components (52). Each moisture absorption component (50) is arranged on the outer wall of the bottom of a sleeve rod (11). Each dehumidification component (51) is arranged on the outer wall of the top of an inner rod (10). Each automatic retracting and releasing component (52) is arranged between the top of an inner rod (10) and one end of the electric field probe (2). The electric field probe (2) is electrically connected to the controller. A cross plate (100) is fixedly arranged at the top of each inner rod (10). The two cross plates (100) are slidably connected. The electric field probe (2) is fixedly connected to the outer wall of one of the cross plates (100). Each automatic retracting and releasing component (52) includes an insulating wire (520), a wire winding disc (521), a rack (522), a gear (523) and a return spring (524). The wire winding disc (521) is rotatably arranged on the outer wall of the top of the inner rod (10) through a hinge shaft. The insulating wire (520) is fixedly arranged at one end of the electric field probe (2), and the other end thereof is wound and connected to the wire winding disc (521). The gear (523) is sleeved on the hinge shaft. A guide rail is fixedly arranged on the outer wall of the top of the inner rod (10). The rack (522) is slidably connected to the guide rail. The return spring (524) is fixedly arranged between the bottom of the rack (522) and the inner wall of the guide rail. The rack (522) is meshed with the gear (523). Each dehumidification component (51) includes a mounting plate (510) and a plurality of cylindrical absorbent cotton (511). The mounting plate (510) is fixedly arranged on the outer wall of the top of the inner rod (10). A plurality of rotating shafts are equidistantly arranged at the top of the mounting plate (510). Each cylindrical absorbent cotton (511) is sleeved on the outer wall of a rotating shaft. The insulating wire (520) passes through between the plurality of cylindrical absorbent cotton (511).

2. The geoelectrically isolated portable electric field measurement device according to claim 1, characterized in that: Each moisture absorption component (50) includes a sliding sleeve (500), a receiving box (501), and a strip-shaped water-absorbing sponge (502). The sliding sleeve (500) is slidably arranged at the bottom of the sleeve rod (11). Four support feet (503) are fixedly arranged at the four corners of the bottom of the sliding sleeve (500). The receiving box (501) is inserted on the outer walls of the four support feet (503). The top of the receiving box (501) is in contact with the bottom of the sliding sleeve (500). The strip-shaped water-absorbing cotton is inserted inside the receiving box (501).

3. The geoelectrically isolated portable electric field measurement device according to claim 2, characterized in that: Each sliding component (40) includes a slider (400) and two insertion rods (401). The two insertion rods (401) are fixedly arranged at the bottom of the inner rod (10). A limit plate (402) is fixedly arranged at the top of each sleeve rod (11). The two insertion rods (401) pass through one of the limit plates (402) and extend into the inside of the sleeve rod (11). The slider (400) is fixedly arranged between the bottoms of the two insertion rods (401).

4. The geoelectrically isolated portable electric field measurement device according to claim 3, characterized in that: Each locking component (41) includes a limit block (410), a plurality of hemispherical buckles (411), and a plurality of pressing springs (412). The limit block (410) is fixedly arranged on the inner wall of the sleeve rod (11). A through groove (413) for the limit block (410) to pass through is arranged on the slider (400). A plurality of circular holes are equidistantly arranged on the outer wall of the limit block (410). Each hemispherical buckle (411) is slidably arranged on a circular hole. Each pressing spring (412) is fixedly arranged between a hemispherical buckle (411) and the inner wall of a circular hole. A clamping groove for the hemispherical buckle (411) to be inserted is arranged on the inner wall of the through groove (413). A wedge-shaped notch (414) for facilitating the hemispherical buckle (411) to quickly enter the through groove (413) is arranged at the top of the through groove (413). One of the hemispherical buckles (411) is clamped with the clamping groove.

5. The geoelectrically isolated portable electric field measurement device according to claim 4, characterized in that: Each connecting component (30) includes a lifting block (300), two limit rods (301), and two guide posts (302). The two limit rods (301) are fixedly arranged at the top of the inner rod (10). The two guide posts (302) are fixedly arranged at the bottom of the inner rod (10). The lifting block (300) is slidably arranged on the outer walls of the two guide posts (302). The top of one of the connecting rods (31) close to the inner rod (10) is hinged to the two limit rods (301). The bottom of one of the connecting rods (31) close to the inner rod (10) is hinged to the lifting block (300).

6. The geoelectrically isolated portable electric field measurement device according to claim 5, characterized in that: Two transmission wheels (101) are rotatably arranged on the outer wall of each cross plate (100). A limit groove (102) is arranged on the outer wall of the circumferential direction of each transmission wheel (101). Each insulating wire (520) is in contact with the two limit grooves (102).

7. The geoelectrically isolated portable electric field measurement device according to claim 6, characterized in that: A protective shell (103) is fixedly arranged on the outer wall of one end of each inner rod (10) close to the rack (522). The two insulating wires (520) both pass through the protective shell (103).

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