CN213957444U

CN213957444U - Grounding resistance measuring device for lightning protection detection

Info

Publication number: CN213957444U
Application number: CN202023029225.XU
Authority: CN
Inventors: 李婷; 雷杨娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-08-13
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a ground resistance measuring device for lightning protection electric detection, which comprises a housin, the mounting groove has been seted up to the inside top axle center department of casing, the inner wall both sides fixedly connected with slide bar of mounting groove. The utility model discloses start two-way motor, two-way motor's output shaft drives the both sides driving gear rotatory, make driven gear drive leading gear rotatory, the gear strip of leading gear one side drives the fly leaf rebound of top, the slider of fly leaf both sides is along the slider synchronous activity that makes progress to the fly leaf and is played the guide effect to the fly leaf when the fly leaf is ascending, the fly leaf shifts out the lightning rod from the mounting groove in the casing, in case the thunder falls down hit the casing, the leading-in below ground of lightning rod guide current, carry out lightning-avoiding work to the casing, effectively prevent the damage of thunderstorm weather lightning to the casing, can also accomodate wantonly to the lightning rod when improving device's security performance, avoid its long-time exposure to cause wearing and tearing, the life of lightning rod has been prolonged.

Description

Grounding resistance measuring device for lightning protection detection

Technical Field

The utility model relates to an earth resistance technical field, concretely relates to earth resistance measuring device is used in lightning protection electricity detection.

Background

The ground resistance is a resistance encountered by a current flowing from a ground device into the ground and then flowing through the ground to another ground body or spreading to a distant place. The resistance value is detected through the testing device, whether the resistance value of the grounding resistance reaches the standard or not is judged, and the testing device is conducted on the two ends of the resistance, so that the resistance value is measured.

The existing grounding resistance measuring device for detection needs to detect the resistance with different specifications in different environments, has poor safety performance and no lightning protection function, and causes poor lightning strike resistance of a wire and influences the overall detection efficiency of the device.

Therefore, it is necessary to provide a ground resistance measuring device for lightning protection detection to solve the above problems.

Disclosure of Invention

The utility model aims to provide a grounding resistance measuring device for lightning protection detection, by starting a bidirectional motor, an output shaft of the bidirectional motor drives driving gears at two sides to rotate, so that the driven gear drives the guide gear to rotate, the gear strip on one side of the guide gear drives the movable plate above the guide gear to move upwards, the movable plate moves upwards while the slide blocks on two sides of the movable plate synchronously move upwards along the slide rod to guide the movable plate, the movable plate moves the lightning rod out of the mounting groove in the shell, and the lightning rod guides current to the ground below in case of falling and hitting the shell, carry out lightning-arrest work to the casing, effectively prevent the damage of thunderstorm weather lightning to the casing, can also accomodate the lightning rod wantonly when improving the security performance of device, avoid it to expose for a long time and cause wearing and tearing, prolonged the life of lightning rod to solve above-mentioned weak point in the technique.

In order to achieve the above object, the present invention provides the following technical solutions: a grounding resistance measuring device for lightning protection detection comprises a shell, wherein a mounting groove is formed in the axis of the top end inside the shell, slide rods are fixedly connected to two sides of the inner wall of the mounting groove, a bidirectional motor is fixedly connected to the axis of the bottom end inside the mounting groove, output shafts on two sides of the bidirectional motor are fixedly connected with driving gears, one end of each driving gear is meshed with a driven gear, one side of each driven gear is meshed with a guide gear, the other side of each guide gear is meshed with a gear strip, the number of the gear strips is two, the two gear strips are arranged on two sides inside the mounting groove, a movable plate is fixedly connected between the tops of the two gear strips, slide blocks are fixedly connected to two sides of the movable plate, the slide blocks are connected with the slide rods in a sliding manner, and lightning rods are fixedly connected to the axis of the tops of the movable plate, the outer wall fixedly connected with first insulating layer of casing, the outside fixedly connected with conducting layer on first insulating layer, the outside fixedly connected with second insulating layer of conducting layer.

Preferably, both sides fixedly connected with engaging lug of casing, the quantity of engaging lug sets up to two, every anti-skidding groove has been seted up to the both sides of engaging lug, the quantity of anti-skidding groove sets up to a plurality ofly, a plurality of anti-skidding groove evenly distributed is in the both sides of engaging lug.

Preferably, the inside middle-end fixedly connected with ohmmeter of casing, the inside bottom fixedly connected with bearing of casing, the quantity of bearing sets up to two sets of, every group the quantity of bearing sets up to two, two fixedly connected with wire winding roller between the bearing, the outside swing joint of wire winding roller has the wire, the line hole has been seted up to the bottom both sides of casing.

Preferably, the outer wall middle-end swing joint of wire has the shift ring, the quantity of shift ring sets up to two sets ofly, and is two sets of symmetrical about the axis of casing between the shift ring, every group the quantity of shift ring sets up to two, every shift hole has been seted up to the inside of shift ring, closely laminate between the internal surface in shift hole and the surface of wire.

Preferably, one end of the moving ring is fixedly connected with a clamping plate, a mounting hole is formed in the inner axis of the clamping plate, and a mounting screw is connected to the inner thread of the mounting hole.

Preferably, the front end top fixedly connected with observation window of casing, the front end bottom fixedly connected with controller of casing, the coincidence sets up between the axis of observation window and the axis of controller.

In the technical scheme, the utility model provides a technological effect and advantage:

1. the bidirectional motor is started through the arrangement of the bidirectional motor, the driving gear, the driven gear, the guide gear, the gear rack, the movable plate, the slide block and the slide bar, the output shaft of the bidirectional motor drives the driving gears on the two sides to rotate, so that the driven gear drives the guide gear to rotate, the gear strip on one side of the guide gear drives the movable plate above the guide gear to move upwards, the movable plate moves upwards while the slide blocks on two sides of the movable plate synchronously move upwards along the slide rod to guide the movable plate, the movable plate moves the lightning rod out of the mounting groove in the shell, and the lightning rod guides current to the ground below in case of falling and hitting the shell, the lightning protection device has the advantages that the lightning protection work is carried out on the shell, the damage of lightning to the shell in thunderstorm weather is effectively prevented, the safety performance of the device is improved, meanwhile, the lightning rod can be randomly stored, the abrasion caused by long-time exposure of the lightning rod is avoided, and the service life of the lightning rod is prolonged;

2. through the shifting ring, remove the hole, the grip block, the setting of mounting hole and installation screw, put the ground resistance that needs detected between the grip block, distance between two shifting rings on every wire of specification and dimension adjustment according to ground resistance, make the front end grip block of shifting ring just fix ground resistance's outer wall, then squeeze into the installation screw through the mounting hole in the grip block, the realization is fixed to ground resistance's centre gripping, can install the firm reliability of centre gripping simultaneously according to different specification and dimension's ground resistance, ground resistance is difficult for taking place to drop, avoid influencing the detection effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 1 according to the present invention.

Fig. 5 is an enlarged view of the position B in fig. 1 according to the present invention.

Description of reference numerals:

1. a housing; 2. mounting grooves; 3. a slide bar; 4. a bi-directional motor; 5. a driving gear; 6. a driven gear; 7. a guide gear; 8. a gear rack; 9. a movable plate; 10. a slider; 11. a lightning rod; 12. a first insulating layer; 13. a conductive layer; 14. a second insulating layer; 15. connecting lugs; 16. an anti-slip groove; 17. an ohm meter; 18. a bearing; 19. a winding roller; 20. a wire; 21. a wire arranging hole; 22. a moving ring; 23. moving the hole; 24. a clamping plate; 25. mounting holes; 26. mounting screws; 27. an observation window; 28. and a controller.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a grounding resistance measuring device for lightning protection detection as shown in figures 1-5, which comprises a shell 1, wherein a mounting groove 2 is arranged at the axle center of the inner top end of the shell 1, slide bars 3 are fixedly connected with both sides of the inner wall of the mounting groove 2, a bidirectional motor 4 is fixedly connected with the axle center of the inner bottom end of the mounting groove 2, the type of the bidirectional motor 4 is BLD, driving gears 5 are fixedly connected with output shafts at both sides of the bidirectional motor 4, one end of the driving gear 5 is engaged and connected with a driven gear 6, one side of the driven gear 6 is engaged and connected with a guide gear 7, the other side of the guide gear 7 is engaged and connected with a gear strip 8, the number of the gear strip 8 is two, two gear strips 8 are arranged at both sides of the inner part of the mounting groove 2, and a movable plate 9 is fixedly connected between the tops of the two gear strips 8, the lightning arrester is characterized in that sliding blocks 10 are fixedly connected to two sides of the movable plate 9, the sliding blocks 10 are in sliding connection with the sliding rods 3, a lightning rod 11 is fixedly connected to the top axis of the movable plate 9, a first insulating layer 12 is fixedly connected to the outer wall of the shell 1, a conducting layer 13 is fixedly connected to the outer portion of the first insulating layer 12, and a second insulating layer 14 is fixedly connected to the outer portion of the conducting layer 13.

Further, in the above technical scheme, both sides fixedly connected with engaging lug 15 of casing 1, the quantity of engaging lug 15 sets up to two, and every antiskid groove 16 has been seted up to the both sides of engaging lug 15, the quantity of antiskid groove 16 sets up to a plurality ofly, and is a plurality of antiskid groove 16 evenly distributed has seted up antiskid groove 16 in the both sides of engaging lug 15 on the engaging lug 15, through the design of engaging lug 15, plays the effect of being convenient for hold casing 1, and antiskid groove 16's design has increased frictional force, prevents that the condition that drops from appearing in casing 1 when holding.

Further, in the above technical scheme, the middle end of the inside of the casing 1 is fixedly connected with an ohmmeter 17, the bottom end of the inside of the casing 1 is fixedly connected with bearings 18, the number of the bearings 18 is two, the number of the bearings 18 in each group is two, a winding roller 19 is fixedly connected between the two bearings 18, a wire 20 is movably connected to the outside of the winding roller 19, wire arranging holes 21 are formed in two sides of the bottom end of the casing 1, the wire 20 is pulled out of the casing 1 from the winding roller 19 in the casing 1 through the wire arranging holes 21, a ground resistance is connected into a circuit through the wire 20, and the resistance value of the ground resistance is displayed on the ohmmeter 17, so that whether the actual value and the standard value of the resistance value are consistent or not is tested.

Further, in the above technical scheme, the outer wall middle end of the wire 20 is movably connected with moving rings 22, the number of the moving rings 22 is set to two groups, the two groups of moving rings 22 are symmetrical about the central axis of the housing 1, the number of the moving rings 22 in each group is set to two, a moving hole 23 is formed in each moving ring 22, the inner surface of each moving hole 23 is tightly attached to the outer surface of the wire 20, the moving holes 23 in the moving rings 22 are used for conveniently adjusting the distance between the two moving rings 22, and the ground resistors with different specifications are conveniently installed.

Further, in the above technical solution, one end of the moving ring 22 is fixedly connected with a clamping plate 24, a mounting hole 25 is formed in an inner axis of the clamping plate 24, a mounting screw 26 is connected to an inner thread of the mounting hole 25, and a distance between two moving rings 22 on each wire 20 is adjusted according to a specification and a size of the ground resistor, so that the front end clamping plate 24 of the moving ring 22 just fixes an outer wall of the ground resistor, and then the mounting screw 26 is driven into the mounting hole 25 in the clamping plate 24, thereby clamping and fixing the ground resistor.

Further, in the above technical solution, the top of the front end of the housing 1 is fixedly connected with an observation window 27, the bottom of the front end of the housing 1 is fixedly connected with a controller 28, where the model of the controller 28 is LU-920UY, the central axis of the observation window 27 and the central axis of the controller 28 are overlapped, the resistance display value of the ohmmeter 17 in the housing 1 is observed by the observation window 27, and the controller 28 controls the on/off of each electronic device in the housing 1.

This practical theory of operation:

referring to the attached drawings 1-5 of the specification, a worker places the device in a corresponding environment to detect the ground resistance, when thunderstorm weather occurs, the bidirectional motor 4 is started, an output shaft of the bidirectional motor 4 drives driving gears 5 on two sides to rotate, so that a driven gear 6 drives a guide gear 7 to rotate, a gear strip 8 on one side of the guide gear 7 drives a movable plate 9 above the guide gear to move upwards, the movable plate 9 moves upwards, meanwhile, sliding blocks 10 on two sides of the movable plate 9 move upwards synchronously along a sliding rod 3, the movable plate 9 moves a lightning rod 11 out of a mounting groove 2 in a shell 1, and the shell 1 is subjected to lightning protection work by matching with a first insulating layer 12, a second insulating layer 14 and a conducting layer 13;

referring to the attached drawings 1-5 of the specification, a worker pulls a wire 20 out of a shell 1 from a winding roller 19 in the shell 1 through a wire arranging hole 21, puts a ground resistor to be detected between clamping plates 24, adjusts the distance between two moving rings 22 on each wire 20 according to the specification and the size of the ground resistor, enables the clamping plates 24 at the front ends of the moving rings 22 to just fix the outer wall of the ground resistor, then drives mounting screws 26 through mounting holes 25 in the clamping plates 24 to clamp and fix the ground resistor, connects the ground resistor into a circuit through the wire 20 after fixing the ground resistor, and displays the resistance value of the ground resistor on an ohm meter 17, so that whether the actual value of the resistance value is consistent with the standard value or not is tested.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a ground resistance measuring device for lightning protection electric detection, includes casing (1), its characterized in that: the mounting groove is formed in the axis of the top end inside the shell (1), sliding rods (3) are fixedly connected to two sides of the inner wall of the mounting groove (2), a two-way motor (4) is fixedly connected to the axis of the bottom end inside the mounting groove (2), driving gears (5) are fixedly connected to output shafts of two sides of the two-way motor (4), a driven gear (6) is connected to one end of each driving gear (5) in a meshed mode, a guide gear (7) is connected to one side of each driven gear (6) in a meshed mode, gear bars (8) are connected to the other side of each guide gear (7) in a meshed mode, the number of the gear bars (8) is two, the two gear bars (8) are arranged on two sides inside the mounting groove (2), a movable plate (9) is fixedly connected between the tops of the two gear bars (8), and sliding blocks (10) are fixedly connected to two sides of the movable plate (9), be sliding connection between slider (10) and slide bar (3), top axle center department fixedly connected with lightning rod (11) of fly leaf (9), the outer wall fixedly connected with first insulating layer (12) of casing (1), the outside fixedly connected with conducting layer (13) on first insulating layer (12), the outside fixedly connected with second insulating layer (14) of conducting layer (13).

2. The grounding resistance measuring device for lightning protection detection according to claim 1, characterized in that: the both sides fixedly connected with engaging lug (15) of casing (1), the quantity of engaging lug (15) sets up to two, every anti-skidding groove (16) have been seted up to the both sides of engaging lug (15), the quantity of anti-skidding groove (16) sets up to a plurality ofly, and is a plurality of anti-skidding groove (16) evenly distributed is in the both sides of engaging lug (15).

3. The grounding resistance measuring device for lightning protection detection according to claim 1, characterized in that: the utility model discloses a wire winding roller, including casing (1), the inside middle-end fixedly connected with ohmmeter (17) of casing (1), the inside bottom fixedly connected with bearing (18) of casing (1), the quantity of bearing (18) sets up to two sets of, every group the quantity of bearing (18) sets up to two, two fixedly connected with wire winding roller (19) between bearing (18), the outside swing joint of wire winding roller (19) has wire (20), wire arranging hole (21) have been seted up to the bottom both sides of casing (1).

4. The grounding resistance measuring device for lightning protection detection according to claim 3, wherein: the outer wall middle-end swing joint of wire (20) has shift ring (22), the quantity of shift ring (22) sets up to two sets of, and is two sets of symmetrical about the axis of casing (1) between shift ring (22), every group the quantity of shift ring (22) sets up to two, every shift hole (23) have been seted up to the inside of shift ring (22), closely laminate between the internal surface of shift hole (23) and the surface of wire (20).

5. The grounding resistance measuring device for lightning protection detection according to claim 4, wherein: one end fixedly connected with grip block (24) of shift ring (22), mounting hole (25) have been seted up to the inside axle center department of grip block (24), the inside threaded connection of mounting hole (25) has mounting screw (26).

6. The grounding resistance measuring device for lightning protection detection according to claim 1, characterized in that: the utility model discloses a casing, including casing (1), front end top fixedly connected with observation window (27), the front end bottom fixedly connected with controller (28) of casing (1), the coincidence sets up between the axis of observation window (27) and the axis of controller (28).