Lead-out device for preventing antenna from being broken

Abstract

The utility model discloses a lead-out device for preventing antenna fracture, which relates to the technical field of antenna installation, and comprises an electric cabinet front end cover, a shell, an antenna and a butt joint system, the shell is in a spherical bowl shape, the opening end of the shell is connected with the electric cabinet front end cover, the interior of the spherical bowl-shaped shell is a bowl cavity, the bowl cavity faces the outside, and the butt joint system is connected with the antenna. The butt joint system is connected with the bottom of the shell through screws, a through hole is formed in the center of the bottom of the shell, the antenna penetrates through the bowl cavity and the through hole to be connected with the butt joint system, and a fixing cylinder is arranged at the bottom of the shell and is coaxial with the shell; according to the utility model, the spherical bowl-shaped shell is connected with the front end cover of the electric cabinet, the antenna penetrates through the bowl cavity and the through hole and is connected with the docking system, and the part of the antenna located in the bowl cavity is a bending compensation space, so that when the antenna is scratched, the bending radius of the antenna is greatly increased, and structural fatigue cannot be caused to an antenna leading-out point; therefore, the possibility of breaking is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna installation, in particular to a lead-out device for preventing an antenna from being broken. Background Art

[0002] There is an antenna lead-out device on the front cover plate of the shearer's electric control box. The traditional antenna lead-out device scheme is as Figure 3 shown. This scheme has a simple structure and can meet the requirements of electrical explosion-proof performance. However, when the shearer is working on-site, occasionally some uncertain objects in front of the cover plate may scrape against the antenna, as Figure 4 shown. In this way, the antenna will be squeezed, resulting in a bend with a small radius of curvature, which will cause structural fatigue at the root of the antenna lead-out. After multiple scrapes, the internal wire of the antenna will break, thus affecting the normal operation of the shearer. Content of the Utility Model

[0003] In view of the above deficiencies of the prior art, the utility model provides a lead-out device for preventing an antenna from being broken. The spherical bowl-shaped shell is connected to the front end cover of the electric control box. The antenna passes through the bowl cavity and the through hole and is connected to the docking system. The part of the antenna located in the bowl cavity is a bending compensation space. When the antenna is scraped, the radius of the antenna bend will be greatly increased, and structural fatigue will not be caused to the antenna lead-out point, thus greatly reducing the possibility of breakage.

[0004] To achieve the above object, the utility model is realized through the following technical solutions: A lead-out device for preventing an antenna from being broken, including a front end cover of an electric control box, a shell, an antenna, and a docking system. The shell is spherical bowl-shaped, the open end of the shell is connected to the front end cover of the electric control box. The inside of the spherical bowl-shaped shell is a bowl cavity, and the bowl cavity faces the outside. The docking system is connected to the bottom of the shell by screws. A through hole is provided at the center position of the bottom of the shell. The antenna passes through the bowl cavity and the through hole and is connected to the docking system. A fixed cylinder is provided at the bottom of the shell and is coaxial with the shell. A sealing ring is provided inside the fixed cylinder and sleeved on the antenna. Internal threads are provided on the inner side wall of the fixed cylinder, and the compression nut is screwed onto the fixed cylinder.

[0005] Preferably, a chamfer is provided at one end of the through hole corresponding to the outside.

[0006] Preferably, the material of the shell is low alloy steel.

[0007] Preferably, a metal washer is provided between the compression nut and the sealing ring.

[0008] Preferably, the shell and the front end cover of the electric control box are fixed by welding.

[0009] Preferably, the shell and the fixed cylinder are integrally formed.

[0010] The utility model provides a lead-out device for preventing an antenna from being broken, which has the following beneficial effects:

[0011] 1. In the utility model, a spherical bowl-shaped housing is connected to the front end cover of the electric control box, the antenna passes through the bowl cavity and the through hole and is connected to the docking system, and the part of the antenna located in the bowl cavity is a bending compensation space. When the antenna is scratched or collided, the radius of the antenna bending will be greatly increased, and the structural fatigue of the antenna lead-out point will not be caused, thereby greatly reducing the possibility of breakage;

[0012] 2. In the utility model, a chamfer is arranged at the lower end of the through hole, which further improves the compensation distance when the antenna bends, and the chamfer also reduces the acting force on a single point of the antenna, reducing the possibility of breakage. Description of the Drawings

[0013] Figure 1 is the front view sectional view of a lead-out device for preventing an antenna from being broken according to the utility model in the normal state;

[0014] Figure 2 is the front view sectional view of a lead-out device for preventing an antenna from being broken according to the utility model in the collision state;

[0015] Figure 3 is the front view sectional view of the prior art of the utility model in the normal state;

[0016] Figure 4 is the front view sectional view of the prior art of the utility model in the collision state.

[0017] In the figure: 1. Front end cover of the electric control box; 2. Housing; 3. Antenna; 4. Chamfer; 5. Bowl cavity; 6. Screw; 7. Fixed cylinder; 8. Compression nut; 9. Docking system; 10. Metal washer; 11. Sealing ring; 12. Through hole. Specific Embodiments

[0018] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the utility model.

[0019] Such as Figures 1-4As shown in the figure, a lead-out device for preventing the antenna 3 from breaking includes the front cover 1 of the electric control box, the housing 2, the antenna 3, and the docking system 9. The housing 2 is in the shape of a spherical bowl. The open end of the housing 2 is connected to the front cover 1 of the electric control box. The inside of the spherical bowl-shaped housing 2 is a bowl cavity 5, and the bowl cavity 5 faces outward. The docking system 9 is connected to the bottom of the housing 2 by screws 6. A through hole 12 is provided at the center of the bottom of the housing 2. The antenna 3 passes through the bowl cavity 5 and the through hole 12 and is connected to the docking system 9. A fixing cylinder 7 is provided at the bottom of the housing 2 and is coaxial with the housing 2. A sealing ring 11 is provided inside the fixing cylinder 7 and sleeved on the antenna 3. The inner side wall of the fixing cylinder 7 is provided with internal threads, and the compression nut 8 is screwed onto the fixing cylinder 7; one end of the through hole 12 corresponding to the outside is provided with a chamfer 4; the material of the housing 2 is low alloy steel; a metal washer 10 is provided between the compression nut 8 and the sealing ring 11; the housing 2 and the front cover 1 of the electric control box are fixed by welding; the housing 2 and the fixing cylinder 7 are integrally formed.

[0020] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, which are as follows:

[0021] According to the attached Figures 1-4 It can be seen from the specification that the installation of the antenna 3 in the present invention can refer to the prior art and will not be described here. During operation, when the antenna 3 is scratched or bumped, it will bend. It should be noted that due to the presence of the electric control box, the limit position where the antenna 3 is scratched or bumped is the position parallel to the outer side wall of the front cover 1 of the electric control box. Since the housing 2 is in the shape of a spherical bowl and the bottom of the housing 2 is inside the front cover 1 of the electric control box, and the antenna 3 passes through the bowl cavity 5 and the through hole 12, when the antenna 3 is scratched or bumped, the antenna 3 will bend according to the length from the scratch point to the bottom of the housing 2 (the length change caused by the complete deformation of the antenna 3 is not considered here). Compared with the prior art, there is an additional space of the bowl cavity 5, that is, the bending compensation space, and the bending radius of the antenna 3 will be greatly improved, and the structural fatigue of the antenna 3 lead-out point (the contact point between the antenna 3 and the outer side wall of the front cover 1 of the electric control box in the prior art) will not be caused, thereby greatly reducing the possibility of breakage and improving the service life.

[0022] Among them, one end of the through hole 12 corresponding to the outside is provided with a chamfer 4, which further improves the compensation distance when the antenna 3 bends, and the chamfer 4 also reduces the acting force on a single point of the antenna 3, reducing the possibility of breakage.

[0023] Among them, the material of the housing 2 is low alloy steel, which increases its structural strength and improves the connection strength with the front cover 1 of the electric control box and the docking system 9.

[0024] Among them, a metal washer 10 is arranged between the compression nut 8 and the sealing ring 11. The compression nut 8 is used to compress the sealing ring 11 so as to further squeeze the antenna 3. Adding the metal washer 10 increases the compression area of the sealing ring 11 and improves the compression effect.

[0025] In addition, the housing 2 and the front end cover 1 of the electric control box are fixed by welding, which is stable. The housing 2 and the fixing cylinder 7 are integrally formed, improving their connection strength.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lead-out device for preventing an antenna (3) from breaking, characterized in that: The invention comprises a front end cover (1) of an electric control box, a shell (2), an antenna (3) and a docking system (9), wherein the shell (2) is in the shape of a ball bowl, the open end of the shell (2) is connected to the front end cover (1) of the electric control box, the interior of the ball bowl-shaped shell (2) is a bowl cavity (5), and the bowl cavity (5) faces outwards, the docking system (9) is connected to the bottom of the shell (2) through a screw (6), a through hole (12) is provided at the center of the bottom of the shell (2), the antenna (3) passes through the bowl cavity (5) and the through hole (12) and is connected to the docking system (9), the bottom of the shell (2) is provided with a fixing cylinder (7) and is coaxial with the shell (2), the fixing cylinder (7) is provided with a sealing ring (11) inside and is sleeved on the antenna (3), the inner side wall of the fixing cylinder (7) is provided with an internal thread, and the clamping nut (8) is screwed to the fixing cylinder (7).

2. A lead-out device for preventing an antenna (3) from breaking according to claim 1, characterized in that: A chamfer (4) is provided at one end of the through hole (12) corresponding to the outer side.

3. The lead-out device for preventing the antenna (3) from breaking according to claim 1, characterized in that: The shell (2) is made of low alloy steel.

4. The lead-out device for preventing the antenna (3) from breaking according to claim 1, characterized in that: A metal washer (10) is provided between the compression nut (8) and the sealing ring (11).

5. The lead-out device for preventing the antenna (3) from breaking according to claim 1, characterized in that: The housing (2) and the front end cover (1) of the electric control box are fixed by welding.

6. The lead-out device for preventing the antenna (3) from breaking according to claim 1, characterized in that: The housing (2) and the fixing cylinder (7) are integrally formed.

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