CN214957402U

CN214957402U - Grounding device for distribution line

Info

Publication number: CN214957402U
Application number: CN202121422037.5U
Authority: CN
Inventors: 杜翔; 许懿
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-11-30
Anticipated expiration: 2031-06-24

Abstract

The application discloses a earthing device for distribution lines, including bottom plate and rigid coupling lower outer tube at the bottom plate top, the guide bar has been cup jointed in the top inner chamber of outer tube to the slip down, the outer tube has been cup jointed in the slip on the top outer wall of guide bar, the top of going up the outer tube is connected to the bottom of casing through the connecting rod, be provided with wiring structure in the inner chamber of casing, it has spacing bolt to go up equal screw-thread grafting on the lateral wall of outer tube and lower outer tube, spacing bolt's end all supports the outer wall to the guide bar, the structural earth connection surface gomphosis of wiring is provided with block wiring structure. The lower pressing plate is loosened, the traction rod is not stressed any more, the first spring extends, so that the lower clamping plate is driven to move upwards to clamp the grounded wire between the upper clamping plate and the lower clamping plate, grounding is completed, when the lower pressing plate needs to be detached, the lower pressing plate is pressed again, the whole grounding process is simple, and operation of maintenance personnel is facilitated.

Description

Grounding device for distribution line

Technical Field

The application relates to the field of power distribution, in particular to a grounding device for a power distribution line.

Background

Power distribution is the link in an electrical power system that connects directly with and distributes power to users. The power distribution system consists of a power distribution substation, a high-voltage distribution line, a power distribution transformer, a low-voltage distribution line and corresponding control protection equipment.

When overhauing distribution lines and some distribution equipment, generally need carry out ground connection to distribution lines and distribution equipment, some hanging earthing device of current are comparatively loaded down with trivial details in operation process, can consume more time. Therefore, a grounding device for a distribution line is proposed to address the above problems.

Disclosure of Invention

The grounding device for the distribution line is provided in the embodiment and used for solving the problems that some hanging type grounding devices in the prior art are more complicated in the operation process and can consume more time.

According to an aspect of the application, a grounding device for distribution lines is provided, including bottom plate and the lower outer tube of rigid coupling at the bottom plate top, the guide bar has been cup jointed in the top inner chamber of outer tube down in the slip, the outer tube has been cup jointed in the slip on the top outer wall of guide bar, the top of going up the outer tube is connected to the bottom of casing through the connecting rod, be provided with wiring structure in the inner chamber of casing, it has spacing bolt to go up equal screw-thread grafting on the lateral wall of outer tube and lower outer tube, spacing bolt's end all supports the outer wall to the guide bar, the structural earth connection surface gomphosis of wiring is provided with block wiring structure, the casing is "C" style of calligraphy structure, the equal rigid coupling in surface of going up outer tube and lower outer tube has guide sleeve, guide sleeve cup joints the surface at the earth connection.

Further, wiring structure includes block board, lower block board, direction telescopic link and adjusting threaded rod, go up block board and block board down and be the symmetry setting in the inner chamber of casing, but be connected with the adjusting threaded rod of rotation on the top lateral wall of last block board, the top of adjusting threaded rod runs through the top lateral wall of casing and extends to the top of casing, the surperficial screw thread of adjusting threaded rod has cup jointed the thread sleeve pipe, the thread sleeve pipe rigid coupling is on the top lateral wall of casing.

Further, the bottom of lower block board is fixedly connected with the traction lever, the traction lever runs through the bottom lateral wall of casing, and the bottom of traction lever extends to the bottom of casing, the bottom rigid coupling of traction lever has the earth connection, the surface of traction lever has cup jointed first spring, the top and the bottom of first spring respectively the rigid coupling to block board bottom lateral wall and the inner wall of casing down on.

Further, the bottom side wall of the upper clamping plate and the top side wall of the lower clamping plate are both provided with an inward concave arc-shaped groove, the top side wall of the upper clamping plate is fixedly connected with two guide telescopic rods vertically arranged, and the top of each guide telescopic rod is fixedly connected to the inner wall of the shell.

Furthermore, the bottom end of the adjusting threaded rod is fixedly connected with a rotation disc, the surface of the rotation disc is sleeved with an outer casing with a cylindrical structure, and the outer casing is fixedly connected with the top side wall of the upper clamping plate.

Further, go up the snap-on board and the snap-on board keeps away from equal rigid coupling has the clamp plate on the outer wall of casing inner chamber one side down, and two clamp plates all set up along the horizontal direction, but block wiring structure includes interconnect's last cover shell and lower spliced pole, the top lateral wall of going up the cover shell and the bottom lateral wall of lower spliced pole all are connected with the wire connection, it is connected with the bottom lateral wall of traction lever through the earth connection to go up the cover shell.

Further, the inside of going up the cover shell is seted up threaded cavity, threaded cavity has seted up the internal thread on the wall, threaded cavity passes through the external screw thread meshing connection on internal thread and the lower spliced pole surface.

Further, the rigid coupling has the one end of connecting the telescopic link on the top lateral wall in screw thread chamber, the rigid coupling has the lapping plate on the other end of connecting the telescopic link, the lapping plate supports the top surface to spliced pole down, the surface of connecting the telescopic link has cup jointed the second spring, it is cup jointed by the mutual slip of the different body of two pipe diameters and constitutes to connect the telescopic link, the both ends difference rigid coupling of second spring is to on the outer wall of two bodies.

Further, go up the earth connection surface rigid coupling at cover shell top and have the rigid coupling piece, rigid coupling piece rigid coupling is on the movable plate, movable plate rigid coupling to moving sleeve's surface, moving sleeve slides and cup joints outer tube surface under, the rigid coupling has the holding down plate on moving sleeve's the outer wall, holding down plate and movable plate symmetry set up.

Through the above-mentioned embodiment of this application, loosen the holding down plate, after the traction lever is no longer atress, first spring extension to drive down the block board and shift up the wire centre gripping with ground connection between last block board and the lower block board, accomplish ground connection, when needs are dismantled, press down the clamp plate once more can, whole ground connection process is comparatively simple, the maintainer operation of being convenient for.

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 description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 2 is a schematic plan view of an embodiment of the present application;

FIG. 3 is a schematic view of a wiring assembly according to an embodiment of the present application;

fig. 4 is a schematic diagram of a partial enlarged structure at a in fig. 2 according to an embodiment of the present application.

In the figure: 1. the device comprises a bottom plate, 2, a lower outer sleeve, 3, a guide rod, 4, an upper outer sleeve, 5, a connecting rod, 6, a shell, 7, an upper clamping plate, 8, a lower clamping plate, 9, a guide telescopic rod, 10, an adjusting threaded rod, 11, a threaded sleeve, 12, a pressing plate, 13, a traction rod, 14, a first spring, 15, a grounding wire, 16, a guide sleeve, 17, a fixed connection block, 18, a movable plate, 19, a movable sleeve, 20, a lower pressing plate, 21, a limiting bolt, 22, an upper casing, 23, a threaded cavity, 24, a connecting telescopic rod, 25, a second spring, 26, a lap joint plate, 27 and a lower connecting column.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The grounding device for the distribution line in this embodiment can be applicable to grounding of different power distribution equipment, for example, the following power distribution equipment is provided in this embodiment, and the grounding device in this embodiment can be applicable to the following power distribution cabinet.

The power distribution cabinet comprises a cabinet body, a cabinet door, a wire arranging device and a wire slot; the cabinet body with the cabinet door rotates to be connected, the internal first installation zone, second installation zone and the perforation of being provided with of cabinet, the second installation zone is located first installation zone with between the perforation, the winding displacement device install in the second installation zone, the winding displacement device sets up the guide way of a plurality of vertical directions, the wire casing install in each guide way, the wire casing includes mounting and slider, the mounting is fixed set up in the guide way, the slider with mounting sliding connection, the mounting with have the clamping part that is used for pressing from both sides tight electric wire between the slider, the slider dorsad the one end of mounting is provided with the fixed block.

Optionally, a sliding groove is formed in the fixing member, the sliding member comprises a bottom plate and a side plate arranged on the bottom plate, the first end of the bottom plate penetrates through the first side wall of the fixing member in a sliding mode and extends into the sliding groove, an elastic sheet is arranged at the second end of the bottom plate, one end of the elastic sheet is fixed to the side plate, the other end of the elastic sheet is abutted to the second side wall of the sliding groove and then bent towards the side plate to form the clamping portion, the fixing block is slidably arranged on the first side wall of the sliding groove, and the first end of the bottom plate is provided with a positioning hole matched with the fixing block.

Optionally, a first transverse plate is arranged at the top end of the second side wall of the chute, a rotatable second transverse plate is arranged at the top end of the side plate, and the bottom surface of the first transverse plate is slidably connected with the top surface of the second transverse plate.

Optionally, a limiting groove is formed in the groove bottom of the sliding groove, a sliding block is arranged at the bottom of the bottom plate, and the sliding block is arranged in the limiting groove in a sliding mode.

Optionally, the wardrobe further comprises a supporting plate, the supporting plate is arranged in the wardrobe body, and supporting blocks for supporting the supporting plate are arranged on two opposite side walls of the wardrobe body.

Optionally, the bottom of backup pad is provided with the support column, the support column with the backup pad rotates to be connected, the bottom of the cabinet body be provided with in the fixed orifices of support column looks adaptation.

Optionally, the supporting column is a telescopic structure.

Optionally, a holding groove for storing the supporting plate is arranged in the cabinet body, and the holding groove is located below the through hole.

Optionally, the side wall of the cabinet body is further provided with a heat dissipation device, and the heat dissipation device is communicated with the cabinet body and used for dissipating heat of equipment in the cabinet body. Optionally, the wire casing is disposed at both ends of the guide groove.

Of course, the grounding device for the distribution line in this embodiment can be used for other power distribution cabinets. Here, a description will be given below of a grounding device for a distribution line according to an embodiment of the present application.

Referring to fig. 1-4, a grounding device for distribution lines comprises a base plate 1 and a lower outer sleeve 2 fixed on top of the base plate 1, a guide rod 3 is sleeved in the inner cavity at the top of the lower outer sleeve 2 in a sliding manner, an upper outer sleeve 4 is sleeved on the outer wall at the top of the guide rod 3 in a sliding manner, the top of the upper outer sleeve 4 is connected to the bottom of a shell 6 through a connecting rod 5, a wiring structure is arranged in the inner cavity of the shell 6, the side walls of the upper outer sleeve 4 and the lower outer sleeve 2 are both inserted with a limit bolt 21 in a threaded manner, the tail end of the limit bolt 21 is abutted against the outer wall of the guide rod 3, the surface of the grounding wire 15 on the wiring structure is embedded with a clamping wiring structure, the shell 6 is in a C-shaped structure, the surfaces of the upper outer sleeve 4 and the lower outer sleeve 2 are fixedly connected with guide sleeves 16, and the guide sleeves 16 are sleeved on the surface of the grounding wire 15.

The wiring structure comprises an upper clamping plate 7, a lower clamping plate 8, a guiding telescopic rod 9 and an adjusting threaded rod 10, wherein the upper clamping plate 7 and the lower clamping plate 8 are symmetrically arranged in an inner cavity of the shell 6, the adjusting threaded rod 10 capable of rotating is connected to the side wall of the top of the upper clamping plate 7, the top of the adjusting threaded rod 10 penetrates through the side wall of the top of the shell 6 and extends to the top of the shell 6, a threaded sleeve 11 is sleeved on the surface thread of the adjusting threaded rod 10, and the threaded sleeve 11 is fixedly connected to the side wall of the top of the shell 6.

The bottom of lower clamping plate 8 is fixedly connected with traction rod 13, traction rod 13 runs through the bottom side wall of casing 6, and the bottom of traction rod 13 extends to the bottom of casing 6, the bottom of traction rod 13 is fixedly connected with ground connection 15, the surface of traction rod 13 is cup jointed with first spring 14, the top and the bottom of first spring 14 are respectively fixedly connected to the bottom side wall of lower clamping plate 8 and the inner wall of casing 6.

The bottom side wall of the upper clamping plate 7 and the top side wall of the lower clamping plate 8 are both provided with an inward-concave arc-shaped groove, two guide telescopic rods 9 vertically arranged are fixedly connected to the top side wall of the upper clamping plate 7, and the tops of the guide telescopic rods 9 are fixedly connected to the inner wall of the shell 6.

The bottom end of the adjusting threaded rod 10 is fixedly connected with a rotation disc, the surface of the rotation disc is sleeved with an outer casing with a cylindrical structure, and the outer casing is fixedly connected with the top side wall of the upper clamping plate 7.

Go up the snap-on plate 7 and keep away from on the outer wall of 6 inner chambers of casing one sides of snap-on plate 8 down equal rigid coupling have clamp plate 12, and two clamp plates 12 all set up along the horizontal direction, but block wiring structure includes interconnect's last cover shell 22 and lower spliced pole 27, the top lateral wall of going up cover shell 22 and the bottom lateral wall of lower spliced pole 27 all are connected with the power connection line, it is connected with the bottom lateral wall of traction lever 13 through earth connection 15 to go up the cover shell 22.

The interior of the upper casing 22 is provided with a threaded cavity 23, the inner wall of the threaded cavity 23 is provided with an internal thread, and the threaded cavity 23 is meshed with the external thread on the surface of the lower connecting column 27 through the internal thread.

The rigid coupling has the one end of connecting telescopic link 24 on the top lateral wall of screw thread chamber 23, the rigid coupling has lapping plate 26 on the other end of connecting telescopic link 24, lapping plate 26 supports the top surface to spliced pole 27 down, the second spring 25 has been cup jointed on the surface of connecting telescopic link 24, it comprises by the body mutual slip cup joint that two pipe diameters are different to connect telescopic link 24, the both ends difference rigid coupling of second spring 25 is to the outer wall of two bodies.

Go up the earth connection 15 surface rigid coupling at cover 22 top and have solid joint block 17, gu joint block 17 rigid coupling is on moving plate 18, moving plate 18 rigid coupling to moving sleeve 19's surface, moving sleeve 19 slides and cup joints on outer tube 2 surface down, the rigid coupling has holding down plate 20 on moving sleeve 19's the outer wall, holding down plate 20 and moving plate 18 symmetry set up.

When the grounding device is used, when a grounding wire is reserved on the grounding device, the lower pressing plate 20 is pressed downwards, the lower pressing plate 20 drives the movable sleeve 19 to move downwards, so that the fixed connection block 17 on the surface of the movable plate 18 is driven to move downwards, the fixed connection block 17 drives the traction rod 13 at the top of the grounding wire 15 to move downwards in the downward moving process, the lower clamping plate 8 at the top of the traction rod 13 moves downwards, the first spring 14 is compressed at the moment, the shell 6 is moved, the grounding wire is located between the upper clamping plate 7 and the lower clamping plate 8, then the lower pressing plate 20 is loosened, after the traction rod 13 is not stressed any more, the first spring 14 extends, so that the lower clamping plate 8 is driven to move upwards to clamp the grounding wire between the upper clamping plate 7 and the lower clamping plate 8, grounding is completed, when the grounding device needs to be detached, the pressing plate 20 is pressed downwards again, the whole grounding process is simple, and operation of maintenance personnel is facilitated.

When the whole shell 6 of some distribution equipment needs to be grounded, the pressing plate 20 is pressed downwards, the pressing plate 12 on the lower clamping plate 8 moves downwards, the shell 6 is moved, the protruding part of the equipment shell 6 is placed between the two pressing plates 12, the pressing plate 20 is loosened, the protruding part of the equipment shell 6 is clamped between the two pressing plates 12, grounding is completed, and the function of the whole grounding device is relatively complete.

Through the slip of outer tube 2 and last outer tube 4 on guide bar 3 down, the height of adjustment casing 6 to make bottom plate 1 can place on ground or other table surface, be convenient for keep the stability of ground connection department, improve the stability of ground connection, when need not place bottom plate 1 on ground or other working faces, directly pull out guide bar 3 from last outer tube 4 inner chambers, dismantle and fall bottom plate 1.

The adjusting threaded rod 10 rotates inside the threaded sleeve 11, so that the adjusting threaded rod 10 moves in the vertical direction to drive the upper clamping plate 7 to move, and the position of the wiring can be adjusted to adapt to the strength of the first spring 14.

Connect two earth connection 15 through block wiring structure, accomodate around can being convenient for use, when connecting, will descend spliced pole 27 screw in go up the inside screw thread chamber 23 of cover 22, lower spliced pole 27 supports to the surface of splice plate 26, make and connect the shrink of telescopic link 24, second spring 25 is compressed, utilize the reaction force of second spring 25 to make splice plate 26 support to spliced pole 27 surface down, so need not make down also can make in spliced pole 27 complete screw in screw thread chamber 23 go up cover 22 and lower spliced pole 27 abundant contact, reduce the wiring time, convenient to use.

The application has the advantages that:

1. after the lower pressing plate 20 is loosened, the traction rod 13 is not stressed any more, the first spring 14 extends, so that the lower clamping plate 8 is driven to move upwards to clamp the grounded wire between the upper clamping plate 7 and the lower clamping plate 8, grounding is completed, when the lower clamping plate needs to be detached, the pressing plate 20 is pressed downwards again, the whole grounding process is simple, and operation of a maintainer is facilitated.

2. When the whole shell 6 of some distribution equipment needs to be grounded, the pressing plate 20 is pressed downwards, the pressing plate 12 on the lower clamping plate 8 moves downwards, the shell 6 is moved, the protruding part of the equipment shell 6 is placed between the two pressing plates 12, the pressing plate 20 is loosened, the protruding part of the equipment shell 6 is clamped between the two pressing plates 12, grounding is completed, and the function of the whole grounding device is relatively complete.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An earthing device for distribution lines, characterized in that: the cable connector comprises a bottom plate (1) and a lower outer sleeve (2) fixedly connected to the top of the bottom plate (1), a guide rod (3) is slidably sleeved in an inner cavity of the top of the lower outer sleeve (2), an upper outer sleeve (4) is slidably sleeved on the outer wall of the top of the guide rod (3), the top of the upper outer sleeve (4) is connected to the bottom of a shell (6) through a connecting rod (5), a wiring structure is arranged in the inner cavity of the shell (6), limit bolts (21) are screwed on the side walls of the upper outer sleeve (4) and the lower outer sleeve (2), the tail ends of the limit bolts (21) are abutted to the outer wall of the guide rod (3), a clamping wiring structure is embedded on the surface of a grounding wire (15) on the wiring structure, the shell (6) is of a C-shaped structure, and guide sleeves (16) are fixedly connected to the surfaces of the upper outer sleeve (4) and the lower outer sleeve (2), the guide sleeve (16) is sleeved on the surface of the grounding wire (15).

2. The grounding device for distribution lines of claim 1, wherein: wiring structure includes block board (7), lower block board (8), direction telescopic link (9) and adjusting threaded rod (10), it is the symmetry setting with lower block board (8) in the inner chamber of casing (6) to go up block board (7), but be connected with adjusting threaded rod (10) of rotation on the top lateral wall of last block board (7), the top of adjusting threaded rod (10) is run through casing (6) top lateral wall and is extended to the top of casing (6), threaded sleeve (11) have been cup jointed to the surface screw thread of adjusting threaded rod (10), threaded sleeve (11) rigid coupling is on the top lateral wall of casing (6).

3. A grounding device for distribution lines as claimed in claim 2, characterized in that: the bottom rigid coupling of lower block board (8) has traction lever (13), traction lever (13) run through the bottom lateral wall of casing (6), and the bottom of traction lever (13) extends to the bottom of casing (6), the bottom rigid coupling of traction lever (13) has earth connection (15), first spring (14) has been cup jointed on the surface of traction lever (13), the top and the bottom of first spring (14) rigid coupling respectively to on the inner wall of block board (8) bottom lateral wall and casing (6) down.

4. A grounding device for distribution lines as claimed in claim 2, characterized in that: go up the bottom lateral wall of block board (7) and the top lateral wall of block board (8) down and all seted up inside sunken arc wall, go up the rigid coupling on the top lateral wall of block board (7) and have two direction telescopic links (9) along vertical setting, the top rigid coupling of direction telescopic link (9) is to the inner wall of casing (6).

5. A grounding device for distribution lines as claimed in claim 2, characterized in that: the bottom of the adjusting threaded rod (10) is fixedly connected with a rotation disc, the surface of the rotation disc is sleeved with an outer casing with a cylindrical structure, and the outer casing is fixedly connected with the top side wall of the upper clamping plate (7).

6. A grounding device for distribution lines as claimed in claim 3, characterized in that: go up clamping plate (7) and lower clamping plate (8) and keep away from all rigid couplings on the outer wall of casing (6) inner chamber one side and have clamp plate (12), and two clamp plate (12) all set up along the horizontal direction.

7. The grounding device for distribution lines of claim 1, wherein: the block wiring structure comprises an upper casing (22) and a lower connecting column (27) which can be connected with each other, wherein the top side wall of the upper casing (22) and the bottom side wall of the lower connecting column (27) are both connected with a wiring line, and the upper casing (22) is connected with the bottom side wall of the traction rod (13) through a grounding line (15).

8. The grounding device for distribution lines of claim 7, wherein: the inner part of the upper casing (22) is provided with a threaded cavity (23), the inner wall of the threaded cavity (23) is provided with an internal thread, and the threaded cavity (23) is meshed and connected with the external thread on the surface of the lower connecting column (27) through the internal thread.

9. The grounding device for distribution lines of claim 8, wherein: the rigid coupling has the one end of connecting telescopic link (24) on the top lateral wall of screw thread chamber (23), the rigid coupling has overlap joint board (26) on the other end of connecting telescopic link (24), overlap joint board (26) support to the top surface of spliced pole (27) down, second spring (25) have been cup jointed on the surface of connecting telescopic link (24), it cup joints the constitution by the mutual slip of the different body of two pipe diameters to connect telescopic link (24), the both ends difference rigid coupling of second spring (25) is to on the outer wall of two bodies.

10. The grounding device for distribution lines of claim 9, wherein: go up earth connection (15) surface rigid coupling at cover shell (22) top and have solid joint piece (17), solid joint piece (17) rigid coupling is on movable plate (18), movable plate (18) rigid coupling to the surface of moving sleeve pipe (19), moving sleeve pipe (19) slip cup joint outer tube (2) surface under, the rigid coupling has holding down plate (20) on the outer wall of moving sleeve pipe (19), holding down plate (20) and movable plate (18) symmetry set up.