Modular single-pole tower based on mortise assembly

Abstract

The utility model discloses a modularization single -pole tower based on mortise joint assembly, including equal section main pole and detachable equipment frame, and the outer peripheral wall of main pole is equipped with the first mortise groove of axial through, and equipment frame is equipped with the tapering tongue and groove matched with it, and the tongue and groove adaptive insertion first mortise groove forms radial and peripheral two -way self -locking structure. The utility model discloses utilize mortise joint structure to promote the installation accuracy of equipment frame, and the whole hoisting can be carried out after the ground pre -installation of communication equipment, and high -altitude operation is reduced, and the mortise groove standardization design supports plug -and -play type expansion. In addition, the mortise between pole section avoids stress concentration, and the wind -resisting and shock -resisting nature is enhanced, and the lightweight and corrosion -resistant of aluminium alloy material are realized.

Description

Technical Field

[0001] This utility model relates to the field of communication tower technology, specifically to a modular single-pole tower based on tenon and mortise assembly. Background Technology

[0002] Communication monopole towers are crucial infrastructure for modern communication networks, providing fundamental support for 2G to 4G mobile communication systems and meeting conventional wireless signal coverage requirements. They typically utilize steel or composite material with a uniform cross-section / conical hollow pole. The exterior of the pole is equipped with a fixed mounting platform or bracket to support communication equipment such as antennas and RRUs. The pole's height is extended through the splicing of multiple segments, with adjacent segments connected mechanically using flanges, sleeves, or other mechanical methods.

[0003] The existing poles have the following defects: ① Low installation accuracy: The point fixing method, such as welding / bolts, is used. The installation position depends on manual measurement, and the error often exceeds ±5°, which affects beamforming; ② Difficult construction: The replacement of antennas, RRUs, etc., requires climbing operations, which take a long time to work at height; ③ Poor expandability: Equipment upgrades require cutting the original base or pole, which is difficult to meet the needs of adding new equipment and may also cause structural damage; ④ Insufficient strength of inter-pole connections: The flange connection has shortcomings in mechanical performance. Stress is easy to concentrate at the edge of the bolt hole, resulting in weak wind load and seismic performance and a high risk of failure under harsh working conditions.

[0004] Therefore, there is an urgent need to develop a communication pole system that is quick to install, easy to expand, and reliable in performance. Utility Model Content

[0005] In order to overcome the above-mentioned defects of existing communication monopole towers, this utility model provides a modular monopole tower based on tenon and mortise assembly.

[0006] The technical solution adopted by this utility model is as follows: a modular single-pole tower based on mortise and tenon assembly, including a main pole with a uniform cross section and a detachable equipment frame. The outer peripheral wall of the main pole is provided with an axially penetrating first mortise groove, and the equipment frame is provided with tenon strips. The cross sections of the first mortise groove and the tenon strips are tapered geometric shapes. The tenon strips are adapted to be inserted into the first mortise grooves to form a radial and circumferential bidirectional locking structure together.

[0007] Preferably, the first tenon is a dovetail groove, and the tenon is a dovetail tenon.

[0008] Preferably, the outer peripheral wall of the main rod has three first tenon grooves evenly distributed along the circumferential direction.

[0009] Preferably, the equipment frame is divided into two types: one type has a radially extending connecting rod on the tenon, the outer end of which is used to fix the communication equipment; the other type only includes tenons to form a height limiting insert of a specified length.

[0010] Preferably, the tenon and the connecting rod are metal tubes or metal profiles with closed ends.

[0011] Preferably, the multiple main rods are spliced ​​together to extend in height. Adjacent main rods are connected by a second connecting rod, which includes two insertion sections at both ends and a transition section in the middle. The transition section has the same cross-section as the main rod, and its outer peripheral wall has a second mortise with the same geometry as the first mortise. The outer peripheral wall of the insertion section has a third mortise. The insertion section is inserted into the inner cavity of the main rod, and the tenon formed by the first mortise facing inward is adapted to be inserted into the third mortise, together forming a radial and circumferential bidirectional locking structure.

[0012] Preferably, the main rod and the second connecting rod are made of aluminum alloy.

[0013] This utility model has the following beneficial effects:

[0014] 1. Installation accuracy: The tapered geometric design of the tenon and tenon forms a self-guiding positioning mechanism. When the equipment frame slides along the axial tenon, it automatically achieves radial and circumferential bidirectional locking. The installation angle error can be controlled within ±1°, which completely solves the problem of manual positioning deviation caused by traditional welding / bolt point fixing and ensures the beamforming accuracy of communication equipment.

[0015] 2. Construction efficiency: The multi-section main pole is assembled by tenon joint using special connecting rods. The nested design of the plug-in section and the mortise and tenon groove in the inner cavity of the main pole achieves "insertion and locking", eliminating the need for flange alignment and bolt tightening, which greatly improves the tower construction efficiency. Antenna, RRU and other equipment are pre-assembled on the ground through tenon joint equipment racks and locked in one go after being hoisted to the mortise and tenon groove of the main pole, reducing high-altitude climbing operations and shortening construction time;

[0016] 3. Flexibility for expansion: Three axial through tenons are evenly distributed on the outer periphery of the main pole, providing standardized installation positions for new equipment and accommodating future communication equipment expansion needs. The functional frame with connecting rod and the long insert with pure tenon strip work together to support plug-and-play communication equipment. When upgrading equipment, the corresponding equipment frame can be directly replaced without cutting the pole or base.

[0017] 4. Reliability of connection structure: The plug sections at both ends of the connecting rod form a double locking with the tenon groove in the inner cavity of the main rod, and the stress is evenly distributed along the tenon joint surface, eliminating the problem of stress concentration at the edge of the flange bolt hole, ensuring the structural integrity under harsh working conditions. The main rod-equipment frame and the main rod-connecting rod are both connected by tapered tenon joints to achieve force transmission, forming an integral mechanical load-bearing system, avoiding the risk of local failure caused by traditional point connections;

[0018] 5. Total life cycle cost: The aluminum alloy material combined with mortise and tenon assembly achieves the dual advantages of lightweight and corrosion resistance, reducing transportation and maintenance costs. The detachable design extends the service life of the pole, and equipment replacement and structural upgrades do not require the disposal of the original tower, reducing resource waste. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of the main rod in an embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the installation of the main rod and the equipment frame (functional type) in an embodiment of this utility model.

[0022] Figure 4 This is a schematic diagram of the installation of the main rod and the equipment frame (limiting type) in an embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the connecting rod in an embodiment of this utility model.

[0024] Main rod 1, first tenon 1.1;

[0025] Equipment frame 2, tenon 2.1, connecting rod 1 2.2;

[0026] Connecting rod 2 3, insert section 3.1, transition section 3.2, second mortise 3.3, third mortise 3.4. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] In the embodiments, such as Figures 1-5As shown, a modular monopole tower based on mortise and tenon assembly includes a main pole 1 with a uniform cross-section and a detachable equipment frame 2. The outer peripheral wall of the main pole 1 has an axially penetrating first mortise 1.1, and the equipment frame 2 has a tenon 2.1. The cross-sections of the first mortise 1.1 and the tenon 2.1 are tapered geometric shapes. The tenon 2.1 is fitted into the first mortise 1.1 to form a radial and circumferential bidirectional locking structure. In this embodiment, the tenon 2.1 of the equipment frame 2 is inserted into the corresponding first mortise 1.1 along the axial direction of the main pole 1. Due to the tapered shape, the two not only interlock radially (perpendicular to the axis of the main pole 1 outwards) to prevent the equipment frame 2 from detaching from the main pole 1, but also form a constraint in the circumferential direction of rotation around the pole axis, preventing the equipment frame 2 from rotating around the main pole 1. Thus, they together constitute a stable radial and circumferential bidirectional locking structure. Through the precise fit of the tapered first mortise 1.1 and the tenon 2.1, the equipment frame 2 is quickly, accurately installed, and securely locked on the main pole 1. The insertion process achieves bidirectional self-locking, preventing radial detachment and circumferential rotation, significantly improving the accuracy of equipment installation with minimal angular error and connection reliability. No additional fasteners or complex positioning adjustments are required, and the installation angle error can be controlled within ±1°. This completely solves the problem of manual positioning deviation caused by traditional welding / bolt point fixing, ensuring the accuracy of beamforming for communication equipment.

[0029] In the embodiments, such as Figures 2-4 As shown, the first tenon 1.1 is a dovetail groove, and the tenon 2.1 is a corresponding dovetail tenon. The dovetail groove / tenon is a typical tapered connection structure with excellent pull-out resistance, ensuring the stability of the equipment frame 2 when it is subjected to tensile forces (such as equipment weight and wind load) on the main rod 1. At the same time, its guiding properties are also beneficial for assembly.

[0030] In the embodiments, such as Figures 2-4 As shown, the outer circumferential wall of the main pole 1 has three first tenons 1.1 evenly distributed along the circumferential direction. The three first tenons 1.1 enhance the flexibility and expandability of the pole, allowing multiple equipment racks 2 to be installed at different angles (120-degree intervals), providing multiple standardized and equally spaced installation positions for the equipment racks 2, which can meet the needs of multi-directional equipment deployment and facilitate the future installation of new equipment on the empty tenons.

[0031] In the embodiments, such as Figures 2-4As shown, the equipment rack 2 is divided into two types. One type has a radially extending connecting rod 2.2 on the tenon 2.1, the outer end of which is used to fix the communication equipment. The other type only includes the tenon 2.1, forming a height-limiting insert of a specified length. The first type of functional equipment rack 2 is used to directly install and fix communication equipment (such as antennas, RRUs) at its outer end. The second type of limiting equipment rack 2 does not have an outwardly extending structure. Its main function is to act as an insert of a specific length, inserted into the first tenon 1.1 of the main rod 1, to occupy a position or provide spacing and support in the height direction, thus limiting the height and also contributing to aesthetics. The modular design of the equipment rack 2 provides great application flexibility. The functional design and the limiting design work together to support the "plug-and-play" installation, replacement, and position adjustment of communication equipment without modifying the main rod body, meeting diverse equipment layout and upgrade needs.

[0032] In the embodiments, such as Figure 3 As shown, tenon 2.1 and connecting rod 2.2 are metal tubes or profiles with closed ends. Using metal tubes / profiles (especially aluminum alloys) to manufacture key components ensures the equipment frame has sufficient structural strength and rigidity to support the communication equipment, while also facilitating processing. Sealing at both ends can be achieved through welding or the design of plugs, preventing internal corrosion and extending service life.

[0033] In the embodiments, such as Figure 1 , Figure 5As shown, multiple main rods 1 are spliced ​​together to extend in height. Adjacent main rods 1 are connected by connecting rod 2 3. Connecting rod 2 3 includes two insertion sections 3.1 at both ends and a transition section 3.2 in the middle. The transition section 3.2 has the same cross-section as the main rod 1, and its outer peripheral wall has a second mortise 3.3 with the same geometry as the first mortise 1.1. The outer peripheral wall of the insertion section 3.1 is provided with a third mortise 3.4. The insertion section 3.1 is inserted into the inner cavity of the main rod 1, and the tenon formed by the inward-facing first mortise 1.1 is fitted into the third mortise 3.4, together forming a radial and circumferential bidirectional locking structure. The insertion section 3.1 at the lower end of connecting rod 2 3 is inserted into the upper inner cavity of the lower main rod 1, and the outer circumferential surface of the insertion section 3.1 is provided with a third mortise 3.4. When the tenon structure formed by the inward-facing first tenon groove 1.1 of the lower main rod 1 is nested into the third tenon groove 3.4 on the plug-in section 3.1, the two also form a tapering fit, achieving both radial and circumferential bidirectional locking. Similarly, the other main rod 1 above is connected to the plug-in section 3.1 at the upper end of the connecting rod 2 3 in the same way through its lower inner cavity. At the same time, the transition section 3.2 in the middle of the connecting rod 2 3 and its second tenon groove 3.3 are aligned and continuous with the outer surfaces of the upper and lower main rods 1 and their first tenon grooves 1.1. This embodiment achieves a high-strength, high-precision seamless splicing between the main rod 1 sections. Through the nesting and locking of the plug-in sections 3.1 at both ends of the connecting rod 3 with the tenon groove structure of the inner cavity of the main rod 1, a double constraint is formed, resulting in extremely uniform stress distribution. This completely avoids the stress concentration problem of traditional flange bolt connections and significantly improves the overall bending, torsional, wind load, and seismic performance of the tower. The design of transition section 3.2 ensures the continuity between the outer surface of the main rod 1 and the first tenon 1.1, allowing the equipment frame 2 to be installed normally at the splice without affecting the modular expansion function.

[0034] In this embodiment, the main pole 1, equipment frame 2, and connecting pole 3 are made of aluminum alloy. This embodiment uses high-strength 6-series aluminum alloy, achieving overall lightweighting of the tower while ensuring structural strength, significantly reducing the difficulty and cost of transportation and installation. The excellent atmospheric corrosion resistance of aluminum alloy significantly extends the service life of the tower in harsh outdoor environments, reducing maintenance needs and life-cycle costs. Furthermore, lightweighting also reduces the requirements for the foundation.

[0035] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A modular monopole tower based on tenon and mortise joint assembly, characterized in that, It includes a main rod (1) with a uniform cross section and a detachable equipment frame (2). The outer peripheral wall of the main rod (1) is provided with an axially penetrating first tenon groove (1.1), and the equipment frame (2) is provided with tenons (2.1). The first mortise (1.1) and the tenon (2.1) have a tapered geometric shape in cross section. The tenon (2.1) is adapted to be inserted into the first mortise (1.1) to form a radial and circumferential bidirectional locking structure together.

2. The modular monopole tower based on tenon joint assembly according to claim 1, characterized in that, The first tenon (1.1) is a dovetail groove, and the tenon (2.1) is a dovetail tenon.

3. The modular monopole tower based on tenon joint assembly according to claim 1, characterized in that, The outer peripheral wall of the main rod (1) is evenly distributed with three first tenons (1.1) along the circumferential direction.

4. The modular monopole tower based on tenon joint assembly according to claim 1, characterized in that, The equipment rack (2) is divided into two types. One type has a radially extending connecting rod (2.2) on the tenon (2.1), and the outer end of the connecting rod (2.2) is used to fix the communication equipment. The other type only includes the tenon (2.1) to form a height limiting insert of a specified length.

5. The modular monopole tower based on tenon joint assembly according to claim 4, characterized in that, The tenon (2.1) and the connecting rod (2.2) are metal profiles with closed ends.

6. The modular monopole tower based on tenon joint assembly according to claim 1, characterized in that, The multiple main rods (1) are spliced ​​together to extend in height. Adjacent main rods (1) are connected by connecting rod two (3). The connecting rod two (3) includes plug-in sections (3.1) at both ends and transition section (3.2) in the middle. The transition section (3.2) has the same cross-section as the main rod (1), and the outer peripheral wall is provided with a second mortise (3.3) that is geometrically consistent with the first mortise (1.1). The outer peripheral wall of the plug section (3.1) is provided with a third tenon (3.4). The plug section (3.1) is inserted into the inner cavity of the main rod (1), and the tenon formed by the first tenon (1.1) facing inward is adapted to be inserted into the third tenon (3.4), together forming a radial and circumferential bidirectional locking structure.

7. The modular monopole tower based on tenon joint assembly according to claim 6, characterized in that, The main rod (1) and the connecting rod (3) are made of aluminum alloy.

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