CN209766657U

CN209766657U - tunnel ground terminal

Info

Publication number: CN209766657U
Application number: CN201920505360.5U
Authority: CN
Inventors: 刘建森; 崔群增
Original assignee: Renqiu Tiantai Engineering Materials Co Ltd
Current assignee: Renqiu Tiantai Engineering Materials Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2019-12-10
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a tunnel ground terminal, including the terminal head, the fixed block has all been welded to the both sides surface of terminal head, and the line hole has been seted up along the horizontal direction to one side surface of fixed block near center department below, and the one end in line hole extends to the inside of terminal head, and the vertical hole has been seted up along vertical central line to the inside top surface in line hole. The utility model discloses in, through pulling out the pull rod, make U type pole shift up, pass the line hole with ground connection line, extend to the inside of terminal head, make ground connection line be located the interior table wall of U type pole, not hard up pull rod, elasticity through the spring, make U type pole can be better extrude the inside of notch with ground connection line, thereby can be better fix ground connection line, in the use, increase ground connection line stability in use that can be better, can be better protect ground connection line through first insulating blotter and second insulating blotter, prevent that the extrusion is damaged.

Description

Tunnel ground terminal

Technical Field

The utility model relates to a tunnel earthing device technical field especially relates to a tunnel ground terminal.

Background

At present, in a tunnel railway line system in China, grounding of a power cable, a communication cable, a signal cable and electrification (also called four-electric specialty) is independent grounding, and a grounding terminal is required to be used when the grounding is carried out.

However, in the prior art, the ground terminal is directly installed inside the wall surface of the tunnel, and then the ground terminal can be caused to rust in the long-term use process, and then the service life of the ground terminal can be greatly reduced, and simultaneously when the ground connection line is fixed, the ground connection line is extruded inside the terminal head through screws, in the long-term use process, the screws can be loosened, and then the ground connection line can be caused to fall off, and then the phenomenon of poor contact can be caused to occur, and the tunnel railway transportation can be brought to certain potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the tunnel ground terminal that proposes, including the terminal head, the fixed block has all been welded to the both sides surface of terminal head, one side surface of fixed block is close to center department below and has offered the line hole along the horizontal direction, and the one end in line hole extends to the inside of terminal head, vertical hole has been seted up along vertical central line to the inside top surface in line hole, vertical hole's interior table wall has the spring along vertical direction welding, the bottom welding of spring has the plectane, and the outside of plectane and the interior table wall slip of vertical hole inlay and establish.

In order to achieve the above purpose, the utility model adopts the following technical scheme: .

As a further description of the above technical solution:

A notch is formed in the inner bottom surface of the vertical hole along the vertical center line, and a first insulating buffer pad is attached to the inner bottom surface of the notch and used for protecting the grounding connecting line and preventing the grounding connecting line from being damaged due to extrusion.

As a further description of the above technical solution:

The welding of top center department of plectane has the pull rod, and the top of pull rod extends to the outside of fixed block to the pull rod is located the inside of spring.

As a further description of the above technical solution:

The welding of the bottom center department of plectane has U type pole, and the bottom through wire hole of U type pole to extend to the inside of notch, the interior table wall of U type pole is attached to have the insulating blotter of second for protect ground connection line, prevent to receive the extrusion damage.

As a further description of the above technical solution:

the terminal head is hollow in interior, and the interior table wall is threaded, sets up the screw thread, is convenient for rotate the screw nail for fix the earth connection line, the bottom welding of terminal head has the connecting piece, the bottom welding of connecting piece has the terminal pole.

As a further description of the above technical solution:

The outer surfaces of the terminal head, the fixing block, the connecting piece and the terminal rod are all provided with chromium-aluminum-titanium-silicon coating coatings.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. The utility model discloses in, surface through at the terminal head, the fixed block, connecting piece and terminal pole all sets up chromium aluminium-titanium silicon coating film coating, adopt improvement terminal head that chromium aluminium-titanium silicon coating film coating can be better, the fixed block, the surface hardness of connecting piece and terminal pole, surface finish, the wearability, it is corrosion-resistant, make its improvement terminal head that can be better, the fixed block, the life of connecting piece and terminal pole, reduce the terminal head, the fixed block, the rust probability of connecting piece and terminal pole, can be better use ground terminal in the use.

2. The utility model discloses in, through pulling out the pull rod, make U type pole shift up, pass the line hole with ground connection line, extend to the inside of terminal head, make ground connection line be located the interior table wall of U type pole, not hard up pull rod, elasticity through the spring, make U type pole can be better extrude the inside of notch with ground connection line, thereby can be better fix ground connection line, in the use, increase ground connection line stability in use that can be better, can be better protect ground connection line through first insulating blotter and second insulating blotter, prevent that the extrusion is damaged.

drawings

Fig. 1 is a front sectional view of a tunnel ground terminal according to the present invention;

Fig. 2 is an enlarged partial sectional view of a portion a in fig. 1 of a tunnel ground terminal according to the present invention;

Fig. 3 is a left side sectional view of a fixing block portion of a tunnel ground terminal according to the present invention;

fig. 4 is a top view of a terminal head portion of a tunnel ground terminal according to the present invention.

In the figure: 1. a terminal head; 2. a connecting member; 3. a terminal rod; 4. a fixed block; 5. a wire hole; 6. a recess; 7. a U-shaped rod; 8. a circular plate; 9. a spring; 10. a pull rod; 11. a vertical hole; 12. a second insulating buffer pad; 13. a first insulating cushion pad; 14. a chromium aluminum-titanium silicon coating.

Detailed Description

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a tunnel grounding terminal comprises a terminal head 1, wherein fixed blocks 4 are welded on the outer surfaces of two sides of the terminal head 1, the fixed blocks 4 are welded to facilitate stable use of parts inside the fixed blocks 4, a wire hole 5 is formed in the position, close to the lower part of the center, of the outer surface of one side of each fixed block 4 along the horizontal direction, one end of each wire hole 5 extends into the terminal head 1, each wire hole 5 is formed to enable a grounding connecting wire to better extend into the terminal head 1 through the wire hole 5, a vertical hole 11 is formed in the top surface of the inner portion of each wire hole 5 along the vertical center line, each vertical hole 11 is of a cylindrical structure, a circular plate 8 can better slide inside the vertical hole 11, a spring 9 is welded on the inner surface wall of each vertical hole 11 along the vertical direction, a circular plate 8 is welded at the bottom end of the spring 9, the outer side of the circular plate 8 is embedded with the inner surface wall of the vertical hole 11 in, thereby the spring 9 can be better extruded, the spring can be better used, the chromium aluminum-titanium silicon coating 14 is arranged on the outer surfaces of the terminal head 1, the fixed block 4, the connecting piece 2 and the terminal rod 3, the chromium aluminum-titanium silicon coating 14 can better improve the surface hardness, the surface smoothness, the wear resistance and the corrosion resistance of the terminal head 1, the fixed block 4, the connecting piece 2 and the terminal rod 3, the service life of the terminal head 1, the fixed block 4, the connecting piece 2 and the terminal rod 3 can be better improved, the rusting probability of the terminal head 1, the fixed block 4, the connecting piece 2 and the terminal rod 3 can be reduced, the grounding terminal can be better used in use, the U-shaped rod 7 can move upwards by pulling out the pull rod 10, the grounding connecting wire passes through the wire hole 5 and extends to the inside of the terminal head 1, make the ground connection line be located U type pole 7's interior table wall, not hard up pull rod 10, elasticity through spring 9, make U type pole 7 can be better extrude the inside of notch 6 with the ground connection line, thereby can be better fix the ground connection line, in using, increase ground connection line stability in use that can be better, through first insulating blotter 13 and the insulating blotter 12 of second can be better protect the ground connection line, prevent the extrusion damage.

The inner bottom surface of the vertical hole 11 is provided with a notch 6 along a vertical center line, the notch 6 is provided, so that the U-shaped rod 7 extends to the inside of the notch 6, and the ground connection line is convenient to fix, a first insulating cushion pad 13 is attached to the inner bottom surface of the notch 6, so that the ground connection line is convenient to protect and is prevented from being damaged by extrusion, a pull rod 10 is welded at the center of the top of the circular plate 8, the top end of the pull rod 10 extends to the outside of the fixed block 4, the pull rod 10 is positioned inside the spring 9, the circular plate 8 moves upwards through the upward movement of the pull rod 10, so that the circular plate 8 extrudes the spring 9, in use, the elastic force of the spring 9 can be better used, the U-shaped rod 7 is welded at the center of the bottom of the circular plate 8, the bottom end of the U-shaped rod 7 penetrates through the wire hole 5 and extends to the inside of the notch 6, so that, the grounding connecting wire can be better positioned on the inner surface wall of the U-shaped rod 7, a second insulating buffer pad 12 is attached to the inner surface wall of the U-shaped rod 7, the grounding connecting wire is conveniently protected and prevented from being damaged by extrusion, the inside of the terminal head 1 is of a hollow structure, the inner surface wall is provided with threads which can better rotate the screw to be convenient for protecting the grounding connecting line, the bottom of the terminal head 1 is welded with the connecting piece 2, the connecting piece 2 plays a role in connection and fixation, the bottom of the connecting piece 2 is welded with the terminal rod 3, the outer surfaces of the terminal head 1, the fixed block 4, the connecting piece 2 and the terminal rod 3 are all provided with chromium aluminum-titanium silicon coating coatings 14, the chromium aluminum-titanium silicon coating coatings 14 are adopted, the corrosion resistance of the terminal rod 3, the terminal head 1, the fixing block 4, the connecting piece 2 and the terminal rod 3 can be better improved, and rusting is prevented.

The working principle is as follows: work pull rod 10 makes U type pole 7 shift up, pass line hole 5 with ground connection line, and extend to the inside of terminal head 1, not hard up pull rod 10, restoring force through spring 9, make U type pole 7 move down, thereby extrude the inside of notch 6 with ground connection line, make it can be better extrude fixedly to ground connection line, through setting up chromium aluminium-titanium silicon coating film coating 14, can be better improve terminal rod 3, terminal head 1, fixed block 4, the corrosion resistance of connecting piece 2 and terminal rod 3, prevent to rust.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A tunnel earth terminal, includes terminal head (1), its characterized in that: fixed block (4) have all been welded to the both sides surface of terminal head (1), one side surface of fixed block (4) is close to center department below and has seted up line hole (5) along the horizontal direction, and the one end in line hole (5) extends to the inside of terminal head (1), vertical hole (11) have been seted up along vertical central line to the inside top surface in line hole (5), the interior table wall in vertical hole (11) has spring (9) along vertical direction welding, the bottom welding of spring (9) has plectane (8), and the outside of plectane (8) and the interior table wall in vertical hole (11) slide to inlay and establish.

2. a tunnel earth terminal according to claim 1, wherein: a notch (6) is formed in the inner bottom surface of the vertical hole (11) along the vertical center line, and a first insulating buffer pad (13) is attached to the inner bottom surface of the notch (6).

3. A tunnel earth terminal according to claim 1, wherein: the top center department welding of plectane (8) has pull rod (10), and the top of pull rod (10) extends to the outside of fixed block (4), and pull rod (10) are located the inside of spring (9).

4. A tunnel earth terminal according to claim 1, wherein: the bottom center department welding of plectane (8) has U type pole (7), and the bottom of U type pole (7) runs through line hole (5) to extend to the inside of notch (6), the interior table wall of U type pole (7) is attached to have second insulating blotter (12).

5. A tunnel earth terminal according to claim 1, wherein: the terminal head is characterized in that the inside of the terminal head (1) is of a hollow structure, threads are formed in the inner surface wall of the terminal head, a connecting piece (2) is welded at the bottom of the terminal head (1), and a terminal rod (3) is welded at the bottom of the connecting piece (2).

6. a tunnel earth terminal according to claim 1 or 5, characterized in that: the outer surfaces of the terminal head (1), the fixing block (4), the connecting piece (2) and the terminal rod (3) are all provided with chromium-aluminum-titanium-silicon coating coatings (14).