5G adherent antenna in tunnel

Abstract

The utility model relates to the technical field of antennas, and provides a 5G wall-attached antenna in a tunnel, which is characterized in that the 5G wall-attached antenna comprises a bottom cover, an upper cover, a reflecting plate and an oscillator unit assembly, and the bottom cover is used for being fixed on the inner wall of the tunnel; the upper cover is arranged on the bottom cover in a covering manner; the reflecting plate is provided with a positioning plate body and a bearing plate body, the positioning plate body is arranged on the inner side of the bottom cover and attached to the bottom cover, one end of the bearing plate body is arranged on the positioning plate body, and the other end of the bearing plate body extends towards the upper cover and is connected with the upper cover in an inserted mode. The oscillator unit assembly is arranged on the bearing plate body. According to the technical scheme, the problem that the service life of the antenna is affected due to the fact that components on the reflecting plate are easy to loosen due to the fact that the reflecting plate is easy to shake in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular to a 5G wall-attached antenna in a tunnel. Background Art

[0002] The 5G wall-mounted antenna in the tunnel is a wireless communication device specially designed for use in tunnel environments. Its main purpose is to solve the problem of narrow space inside the tunnel and severe signal attenuation, and to ensure that stable 5G network coverage can still be provided in such a special environment. This type of antenna usually adopts a high-gain design, with a gain of 14dB or more, to enhance signal penetration and coverage. A reflector is provided inside the bottom cover of the wall-mounted antenna, and the vibrator unit assembly is provided on the reflector. The side of the reflector close to the bottom cover is attached to the bottom cover and locked to the bottom cover. Under the repeated action of external wind pressure, that is, vibration force, the reflector is prone to shaking, causing the components on the reflector to loosen easily, which will affect the service life of the antenna. Utility Model Content

[0003] The utility model proposes a 5G wall-mounted antenna in a tunnel, which solves the problem in the related art that the reflector plate is easy to shake, causing the components on the reflector plate to loosen easily, thus affecting the service life of the antenna.

[0004] The technical solution of the utility model is as follows: A 5G wall-attached antenna in a tunnel, the key is: including,

[0005] A bottom cover, the bottom cover being used to be fixed on the inner wall of the tunnel;

[0006] An upper cover, wherein the upper cover is arranged on the bottom cover;

[0007] A reflector, the reflector having a positioning plate body and a bearing plate body, the positioning plate body is arranged inside the bottom cover and is in contact with the bottom cover, one end of the bearing plate body is arranged on the positioning plate body, and the other end of the bearing plate body extends toward the upper cover and is plugged into the upper cover;

[0008] A vibrator unit assembly is arranged on the bearing plate body.

[0009] It also includes a support base, which is arranged on the inner wall of the upper cover. A positioning groove is opened at one end of the support base facing the bearing plate body. The bearing plate body passes through the positioning groove and is plugged into the upper cover.

[0010] A guiding slope is disposed at the opening end of the positioning groove, and an end of the guiding slope away from the upper cover is inclined in a direction away from the bearing plate body.

[0011] The support seat and the upper cover are an integrally formed structure.

[0012] It also includes a reinforcing rib plate, which is arranged between the end of the bearing plate body and the bottom cover, and the reinforcing rib plate is located on a side of the bearing plate body away from the positioning plate body.

[0013] Also includes,

[0014] A dovetail strip, the dovetail strip is arranged on the side of the bearing plate body facing the reinforcing rib plate, the dovetail strip is also arranged on the side of the bottom cover facing the reinforcing rib plate, a dovetail groove is provided on the reinforcing rib plate, the dovetail strip is plugged into the dovetail groove, the length of the dovetail strip is greater than the length of the reinforcing rib plate, screw holes are provided at both ends of the dovetail strip, and the screw holes are located on the outside of the reinforcing rib plate;

[0015] A locking bolt, wherein the locking bolt comprises a locking screw and a locking nut, and the locking screw is threadedly connected to the screw hole;

[0016] A positioning sleeve is rotatably sleeved on the periphery of the locking screw and clamped between the locking nut and the dovetail strip, and the positioning sleeve is in contact with the reinforcing rib plate.

[0017] Also includes,

[0018] A mounting bracket is provided on the outer sides of both ends of the bottom cover;

[0019] Expansion bolts are arranged on the mounting bracket and located at the periphery of the bottom cover, and are used to fix the mounting bracket on the inner wall of the tunnel.

[0020] At least three expansion bolts are arranged on the mounting bracket, wherein the three expansion bolts are arranged in a triangle.

[0021] Also includes,

[0022] a first fastening bolt, the first fastening bolt having a first fastening screw and a first fastening nut, the first fastening screw passing through the positioning plate, the bottom cover, and the mounting bracket located outside the bottom cover;

[0023] A first fastening nut is threadedly connected to the first fastening screw, and the positioning plate, the bottom cover, and the mounting bracket located outside the bottom cover are clamped between the first fastening nut and the first fastening nut.

[0024] Also includes,

[0025] A reinforcing plate, the reinforcing plate being located inside the bottom cover and at an end of the bottom cover away from the reflecting plate;

[0026] a second fastening bolt, the second fastening bolt having a second fastening screw and a second fastening nut, the second fastening screw passing through the reinforcing plate, the bottom cover, and the mounting bracket located outside the bottom cover;

[0027] A second fastening nut is threadedly connected to the second fastening screw, and the reinforcing plate, the bottom cover, and the mounting bracket located outside the bottom cover are clamped between the second fastening nut and the second fastening nut.

[0028] The working principle and beneficial effects of the utility model are as follows: the bottom cover is used to be fixed on the inner wall of the tunnel, the upper cover is arranged on the bottom cover, the reflector has a positioning plate body and a bearing plate body, the positioning plate body is arranged on the inner side of the bottom cover and is fitted with the bottom cover, one end of the bearing plate body is arranged on the positioning plate body, the other end of the bearing plate body extends toward the upper cover and is plugged with the upper cover, and the vibrator unit assembly is arranged on the bearing plate body. The bottom cover and the upper cover simultaneously play the role of supporting and positioning the reflector, so that the reflector and the bottom cover, and the reflector and the upper cover are reliably connected, which can improve the anti-seismic characteristics of the reflector, and the reflector is not easy to shake under the repeated action of external wind pressure, i.e., vibration force, and the components on the reflector are not easy to loosen, which can extend the service life of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0030] Figure 1 It is the front view of the utility model.

[0031] Figure 2 It is the right view of the utility model.

[0032] Figure 3 It is a schematic diagram of the connection structure between the reflector, the bottom cover and the upper cover in the utility model.

[0033] Figure 4 for Figure 2 A is an enlarged view of the middle image.

[0034] Figure 5 It is a schematic diagram of the connection structure of the reflector, the bottom cover and a mounting bracket in the utility model.

[0035] Figure 6 It is a schematic diagram of the connection structure between the reinforcing plate, the bottom cover and another mounting bracket in the utility model.

[0036] Figure 7 It is a schematic diagram of the external structure of the utility model in one direction.

[0037] Figure 8This is a schematic diagram of the external structure of the utility model from another direction.

[0038] In the figure: 1, bottom cover, 2, upper cover, 3, reflection plate, 3-1, positioning plate body, 3-2, bearing plate body, 4, vibrator unit assembly, 5, support seat, 6, positioning groove, 7, reinforcing rib plate, 8, dovetail bar, 9, locking bolt, 10, positioning sleeve, 11, mounting bracket, 12, expansion bolt, 13, first fastening bolt, 14, first fastening nut, 15, reinforcing plate, 16, second fastening bolt, 17, second fastening nut, 18, guide plate, 19, connecting hole, 20, joint. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0040] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0041] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] Example, see Figure 1~Figure 2, is an embodiment of the utility model, and proposes a 5G wall-mounted antenna in a tunnel, including a bottom cover 1, an upper cover 2, a reflecting plate 3, and a vibrator unit assembly 4. The bottom cover 1 is used to be fixed on the inner wall of the tunnel; the upper cover 2 is covered on the bottom cover 1; the reflecting plate 3 has a positioning plate body 3-1 and a bearing plate body 3-2, the positioning plate body 3-1 is arranged on the inner side of the bottom cover 1 and is attached to the bottom cover 1, one end of the bearing plate body 3-2 is arranged on the positioning plate body 3-1, and the other end of the bearing plate body 3-2 extends toward the upper cover 2 and is plugged with the upper cover 2; the vibrator unit assembly 4 is arranged on the bearing plate body 3-2.

[0044] Furthermore, if Figure 1 and Figure 3 As shown, it also includes a support seat 5, which is arranged on the inner wall of the upper cover 2. A positioning groove 6 is opened at one end of the support seat 5 facing the bearing plate body 3-2, and the bearing plate body 3-2 is inserted into the upper cover 2 after passing through the positioning groove 6. By using the support seat 5 and the positioning groove 6, the supported length of the bearing plate body 3-2 can be increased, so that the connection between the bearing plate body 3-2 and the upper cover 2 is more firm and reliable, and the anti-seismic property is better.

[0045] Furthermore, if Figure 3 As shown, the opening end of the positioning groove 6 is provided with a guiding slope, and the end of the guiding slope away from the upper cover 2 is inclined in the direction away from the bearing plate 3-2. The guiding slope makes the width of the opening end of the positioning groove 6 larger than the thickness of the bearing plate 3-2, so that when the upper cover 2 is installed on the bottom cover 1, it is convenient for the bearing plate 3-2 to enter the positioning groove 6.

[0046] Furthermore, the support base 5 and the upper cover 2 are integrally formed, so that the connection between the support base 5 and the upper cover 2 is more firm and reliable.

[0047] Furthermore, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it also includes a reinforcing rib plate 7, which is arranged between the end of the bearing plate body 3-2 and the bottom cover 1, and the reinforcing rib plate 7 is located on the side of the bearing plate body 3-2 away from the positioning plate body 3-1. Figure 2 As shown, reinforcing ribs 7 are provided between the left and right ends of the bearing plate body 3-2 and the bottom cover 1. The left and right reinforcing ribs 7 cooperate with the positioning plate body 3-1 so that both sides of the bearing plate body 3-2 are connected to the bottom cover 1, making the connection between the reflecting plate 3 and the bottom cover 1 more firm and reliable, and having better anti-seismic properties.

[0048] Furthermore, if Figure 2 , Figure 3 and Figure 4As shown, it also includes a dovetail strip 8, a locking bolt 9, and a positioning sleeve 10. A dovetail strip 8 is arranged on the side of the bearing plate body 3-2 facing the reinforcing rib plate 7, and a dovetail strip 8 is also arranged on the side of the bottom cover 1 facing the reinforcing rib plate 7. A dovetail groove is opened on the reinforcing rib plate 7, and the dovetail strip 8 is plugged into the dovetail groove. The length of the dovetail strip 8 is greater than the length of the reinforcing rib plate 7. Screw holes are opened at both ends of the dovetail strip 8, and the screw holes are located on the outside of the reinforcing rib plate 7; the locking bolt 9 has a locking screw and a locking nut, and the locking screw is threadedly connected to the screw hole; the positioning sleeve 10 is rotatably mounted on the periphery of the locking screw, and is clamped between the locking nut and the dovetail strip 8, and the positioning sleeve 10 is in contact with the reinforcing rib plate 7.

[0049] Two upper and lower dovetail strips 8 are provided at both ends of the bottom cover 1, and two upper and lower dovetail grooves are provided at both ends of the left and right reinforcing rib plates 7. The reinforcing rib plates 7 are clamped between the left and right positioning sleeves 10. The spacing between the dovetail strips 8 at both ends of the bottom cover 1 is greater than the length of the reinforcing rib plates 7 along the left and right directions. When installing, the reinforcing rib plates 7 are moved from the dovetail strips 8 at both ends to the corresponding ends, so that the dovetail grooves on the reinforcing rib plates 7 are plugged with the dovetail strips 8 on the bottom cover 1, and then the positioning sleeves 10 and locking bolts 9 are installed. When disassembling, first remove the inner locking bolts 9 and positioning sleeves 10, and then move the reinforcing rib plates 7 in the opposite direction. The structure is simple, the connection is firm and reliable, and the disassembly and assembly are convenient and fast, saving time and effort.

[0050] Furthermore, if Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, it also includes a mounting bracket 11 and an expansion bolt 12. The mounting bracket 11 is arranged on the outer side of both ends of the bottom cover 1; the expansion bolt 12 is arranged on the mounting bracket 11 and is located outside the bottom cover 1, and is used to fix the mounting bracket 11 on the inner wall of the tunnel. During installation, after the bottom cover 1 is fitted with the inner wall of the tunnel, the mounting brackets 11 located at both ends of the bottom cover 1 are also attached to the inner wall of the tunnel. The mounting bracket 11 and the expansion bolt 12 can be used to fix the antenna on the inner wall of the tunnel. The structure is simple, the connection is firm and reliable, and the disassembly and assembly are convenient and fast, saving time and effort.

[0051] Furthermore, if Figure 2 , Figure 7 and Figure 8 As shown, at least three expansion bolts 12 are arranged on the mounting bracket 11, wherein the three expansion bolts 12 are arranged in a triangle. The three expansion bolts 12 cooperate to make the force of the mounting bracket 11 arranged in a triangle, so that the connection between the mounting bracket 11 and the inner wall of the tunnel is more firm and reliable, and the stability is better.

[0052] Furthermore, if Figure 1 , Figure 2 and Figure 5 As shown, it also includes a first fastening bolt 13 and a first fastening nut 14. The first fastening bolt 13 has a first fastening screw and a first fastening nut. The first fastening screw passes through the positioning plate body 3-1, the bottom cover 1, and the mounting bracket 11 located outside the bottom cover 1; the first fastening nut 14 is threadedly connected with the first fastening screw, and the positioning plate body 3-1, the bottom cover 1, and the mounting bracket 11 located outside the bottom cover 1 are clamped between the first fastening nut 14 and the first fastening nut. The first fastening nut 14 is located on the inner side of the bottom cover 1. Through the cooperation of the first fastening bolt 13 and the first fastening nut 14, the mounting bracket 11 below is locked together with the bottom cover 1 and the positioning plate body 3-1. The structure is simple, the connection is firm and reliable, and the disassembly and assembly are convenient and fast, saving time and effort. The first fastening bolt 13 can be directly plugged with the positioning plate body 3-1, the bottom cover 1, and the mounting bracket 11, and can also be threadedly connected with the positioning plate body 3-1, the bottom cover 1, and the mounting bracket 11.

[0053] Furthermore, if Figure 1 , Figure 2 and Figure 6 As shown, the reinforcing plate 15, the second fastening bolt 16, and the second fastening nut 17 are also included. The reinforcing plate 15 is located inside the bottom cover 1 and is located at the end of the bottom cover 1 away from the reflector 3. The second fastening bolt 16 has a second fastening screw and a second fastening nut. The second fastening screw passes through the reinforcing plate 15, the bottom cover 1, and the mounting bracket 11 located outside the bottom cover 1. The second fastening nut 17 is threadedly connected with the second fastening screw. The reinforcing plate 15, the bottom cover 1, and the mounting bracket 11 located outside the bottom cover 1 are clamped between the second fastening nut 17 and the second fastening nut. The second fastening nut 17 is located inside the bottom cover 1. Through the cooperation of the second fastening bolt 16 and the second fastening nut 17, the upper mounting bracket 11 is locked together with the bottom cover 1 and the reinforcing plate 15. The structure is simple, the connection is firm and reliable, and the disassembly and assembly are convenient and quick, saving time and effort. The reinforcing plate 15 can increase the strength of the bottom cover 1. The second fastening bolts 16 may be directly plugged into the reinforcing plate 15 , the bottom cover 1 , and the mounting bracket 11 , or may be threadedly connected to the reinforcing plate 15 , the bottom cover 1 , and the mounting bracket 11 .

[0054] In this embodiment, Figure 2 As shown, the bottom cover 1 is used to be fixed on the inner wall of the tunnel. Two left and right vibrator unit assemblies 4 are arranged on the bearing plate body 3-2 in the bottom cover 1, and each vibrator unit assembly 4 is provided with a guide plate 18. Connecting holes are provided on the side walls of the bottom cover 1 and the upper cover 2. The upper cover 2 is covered on the bottom cover 1. The self-tapping screws pass through the connecting holes on the upper cover 2 and are connected to the connecting holes on the bottom cover 1, thereby locking the bottom cover 1 and the upper cover 2 together. A joint 20 is provided at one end of the upper cover 2 close to the vibrator unit assembly 4.

[0055] The positioning plate body 3-1, the support seat 5, the positioning groove 6 and the reinforcing rib plate 7 cooperate so that the bottom cover 1 and the upper cover 2 simultaneously support and position the reflecting plate 3, so that the reflecting plate 3 and the bottom cover 1, as well as the reflecting plate 3 and the upper cover 2 are reliably connected, which can improve the anti-seismic properties of the reflecting plate 3. Under the repeated action of external wind pressure, i.e., vibration force, the reflecting plate 3 is not easy to shake, and the components on the reflecting plate 3 are not easy to loosen, which can extend the service life of the antenna.

[0056] As a new type of antenna specially developed for tunnel coverage, the 5G high-gain wall-mounted antenna integrates high-gain, narrow beam, MIMO and other technologies; the use of new antenna vibrators allows the antenna to be miniaturized, integrated, and flattened while ensuring gain. With its high gain and narrow beam characteristics, it provides precise coverage and solves the problems of multipath reflection and signal attenuation in tunnels. The streamlined appearance design allows the antenna to be close to the tunnel wall, reducing the windward area and minimizing the train power it is subjected to.

[0057] The antenna is designed as a 30° horizontal / vertical narrow beam antenna, which can more effectively control the directivity of the signal, reduce the reflection and loss of the signal on the tunnel wall, and reduce the interference to the adjacent communication system. A spatial beam-steering electromagnetic structure formed by a single array and multi-layer steering has the function of amplifying the antenna signal and gain. After adopting the multi-layer steering structure, the gain of a single array is amplified from the original 8-8.5dBi to 14-14.5dBi; the four-channel design supports 5G 4T4R access, which can effectively improve the tunnel coverage and network capacity; the layout of multi-port scenarios can be realized, and the mutual interference between the main arrays is relatively small.

[0058] The antenna can achieve compatible coverage of medium and high frequencies, not only covering the 2515-2675GHz 5G frequency band of China Mobile, but also the 3300-3700GHz 5G frequency band of China Unicom. They can be freely combined with little mutual interference.

[0059] Product reliability design: ①Miniaturization and low profile: The antenna adopts a miniaturized design with a thickness of only 98mm; ②Streamlined and low wind resistance: Compared with conventional designs, the wind resistance coefficient is reduced by more than 60%; ③The upper cover is made of high-strength engineering plastic PC+ABS; The mounting bracket is made of 3mm thick 304 stainless steel with a yield strength of 205MPa, which meets the strength requirements in extreme environments; The self-tapping screws are connected with 304 stainless steel nails and are treated to resist falling, which effectively prevents the self-tapping screws from loosening; The fixings are fixed with M10 expansion bolts. The pull-out force test value of a single M10×100 expansion bolt after anchoring is ≥30KN, and the shear bearing capacity is ≥12.8KN.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A 5G wall-mounted antenna in a tunnel, characterized by: include, A bottom cover (1), the bottom cover (1) being used to be fixed on the inner wall of the tunnel; An upper cover (2), the upper cover (2) being arranged on the bottom cover (1); A reflector (3), the reflector (3) comprising a positioning plate body (3-1) and a bearing plate body (3-2), the positioning plate body (3-1) being arranged on the inner side of the bottom cover (1) and being in contact with the bottom cover (1), one end of the bearing plate body (3-2) being arranged on the positioning plate body (3-1), and the other end of the bearing plate body (3-2) extending towards the upper cover (2) and being plugged into the upper cover (2); A vibrator unit assembly (4), wherein the vibrator unit assembly (4) is arranged on the bearing plate body (3-2).

2. The 5G wall-attached antenna in a tunnel according to claim 1, characterized in that: It also comprises a support seat (5), the support seat (5) being arranged on the inner wall of the upper cover (2), and a positioning groove (6) being provided at one end of the support seat (5) facing the bearing plate body (3-2), and the bearing plate body (3-2) is inserted into the upper cover (2) after passing through the positioning groove (6).

3. The 5G wall-attached antenna in a tunnel according to claim 2, characterized in that: The opening end of the positioning groove (6) is provided with a guiding inclined surface, and the end of the guiding inclined surface away from the upper cover (2) is inclined in a direction away from the bearing plate body (3-2).

4. The 5G wall-attached antenna in a tunnel according to claim 2, characterized in that: The support seat (5) and the upper cover (2) are an integrally formed structure.

5. The 5G wall-attached antenna in a tunnel according to claim 1, characterized in that: It also includes a reinforcing rib plate (7), which is arranged between the end of the bearing plate body (3-2) and the bottom cover (1), and the reinforcing rib plate (7) is located on a side of the bearing plate body (3-2) away from the positioning plate body (3-1).

6. The 5G wall-attached antenna in a tunnel according to claim 5, characterized in that: Also includes, a dovetail strip (8), the dovetail strip (8) being arranged on a side of the bearing plate (3-2) facing the reinforcing rib plate (7), and the dovetail strip (8) being also arranged on a side of the bottom cover (1) facing the reinforcing rib plate (7), a dovetail groove being provided on the reinforcing rib plate (7), the dovetail strip (8) being plugged into the dovetail groove, the length of the dovetail strip (8) being greater than the length of the reinforcing rib plate (7), screw holes being provided at both ends of the dovetail strip (8), the screw holes being located on the outside of the reinforcing rib plate (7); A locking bolt (9), the locking bolt (9) comprising a locking screw and a locking nut, the locking screw being threadedly connected to the screw hole; A positioning sleeve (10) is rotatably sleeved on the periphery of the locking screw and clamped between the locking nut and the dovetail strip (8), and the positioning sleeve (10) is in contact with the reinforcing rib plate (7).

7. The 5G wall-attached antenna in a tunnel according to claim 1, characterized in that: Also includes, A mounting bracket (11), the mounting bracket (11) being arranged on the outer sides of both ends of the bottom cover (1); Expansion bolts (12), the expansion bolts (12) being arranged on the mounting bracket (11) and located at the periphery of the bottom cover (1), and being used for fixing the mounting bracket (11) on the inner wall of the tunnel.

8. The 5G wall-attached antenna in a tunnel according to claim 7, characterized in that: At least three expansion bolts (12) are arranged on the mounting bracket (11), wherein the three expansion bolts (12) are arranged in a triangle.

9. The 5G wall-attached antenna in a tunnel according to claim 7, characterized in that: Also includes, A first fastening bolt (13), the first fastening bolt (13) comprising a first fastening screw and a first fastening nut, the first fastening screw passing through the positioning plate (3-1), the bottom cover (1), and the mounting bracket (11) located outside the bottom cover (1); A first fastening nut (14), the first fastening nut (14) being threadedly connected to the first fastening screw, the positioning plate (3-1), the bottom cover (1), and the mounting bracket (11) located outside the bottom cover (1) being clamped between the first fastening nut (14) and the first fastening nut.

10. The 5G wall-attached antenna in a tunnel according to claim 7, characterized in that: Also includes, A reinforcing plate (15), the reinforcing plate (15) being located on the inner side of the bottom cover (1) and located at an end of the bottom cover (1) away from the reflecting plate (3); a second fastening bolt (16), the second fastening bolt (16) comprising a second fastening screw and a second fastening nut, the second fastening screw passing through the reinforcing plate (15), the bottom cover (1), and the mounting bracket (11) located outside the bottom cover (1); A second fastening nut (17), wherein the second fastening nut (17) is threadedly connected to the second fastening screw, and the reinforcing plate (15), the bottom cover (1), and the mounting bracket (11) located outside the bottom cover (1) are clamped between the second fastening nut (17) and the second fastening nut.

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