A tower column foot reinforcing device

Abstract

The utility model discloses a tower column foot reinforcing device, include: steel hoop, fastening bolt, vertical adjusting bolt, horizontal top bolt and cushion block, steel hoop is by vertical board, stiffening plate and horizontal inlay piece is composed, and the vertical board whole becomes L shape, and the both sides are provided to the outward 90 of folding edge, and the folding edge is provided with a plurality of bolt holes, and is provided with a plurality of horizontal stiffening plate, and the vertical board upper portion opens rectangular hole, and the horizontal inlay piece is inlaid and is welded and is fixed at rectangular hole place, and the both sides of horizontal inlay piece open through horizontal screw hole, and the middle opens the vertical screw hole of going up and down through, vertical adjusting bolt is installed through the vertical screw hole of horizontal inlay piece, is used for adjusting steel hoop height, makes horizontal inlay piece with tower column foot bottom plate bottom surface alignment, the utility model discloses tower column foot bottom plate four around is fixed, and will not produce horizontal displacement, is convenient for installation and dismounting, avoided the quality risk of secondary pouring concrete and the inconvenience of having to chisel and open and carry out tower maintenance, and the applicability is more extensive.

Description

Technical Field

[0001] This utility model relates to the field of iron tower reinforcement technology, specifically to an iron tower column base reinforcement device. Background Technology

[0002] With the rapid development of industries such as communications, power, railways, and broadcasting, the number of iron towers used as antenna equipment supports is increasing. The vast majority of these towers are connected to the foundation using anchor bolts. To facilitate the adjustment of the tower's verticality, a certain gap is usually left between the base plate of the tower column and the top surface of the foundation column. After the tower is installed, the reserved gap is then filled with concrete for a second time. The disadvantage of this method is that the quality of the pouring is difficult to control. If it is not dense or has cracks, rainwater will seep in, and the anchor bolts are more prone to corrosion. In addition, the original secondary pouring needs to be chiseled away during the regular inspection and maintenance of the tower, which is time-consuming, labor-intensive, and inconvenient. However, if the secondary pouring is not carried out, the anchor bolts lack protection and are prone to bending and damage under horizontal forces, which is very unsafe.

[0003] For example, Chinese Utility Model Patent Application No. CN202420241527.2 discloses a reinforcement device for the bottom of a communication tower, including a masonry base, a tower column, pre-embedded studs and a locking nut, as well as a fixing block, an mounting block, an inclined support rod, an inclined push rod, and an inverted L-shaped pressure block; multiple fixing blocks are fixed to the tower column at equal intervals along the circumference, the mounting block is fixed to the fixing blocks, and the bottom end of the inclined support rod is hinged to the masonry base and the top end is hinged to the mounting block; through the installation block, inclined support rod, inclined push rod, and inverted L-shaped pressure block, when the mounting block is fixed to the fixing block, the inverted L-shaped pressure block presses down on the top edge of the fixing base, while also exerting a component force pushing the fixing base inward, resulting in uniform force distribution and significantly improved stability; through the anti-collision frame and W-shaped elastic sheet, the tower column is protected, preventing direct impact damage and significantly improving safety.

[0004] For example, Chinese Utility Model Patent Application No. CN202222767634.2 discloses a portable anchor bolt reinforcement device, comprising: a communication tower base column, a base plate welded to the outside of the communication tower base column, a concrete pile foundation fixedly connected to the lower part of the communication tower base column, and an expansion bolt connecting the base plate and the concrete pile foundation; a fixing clamp device, the fixing clamp device being installed on the outside of the base plate, the fixing clamp device including the anchor bolt, the lower part of the anchor bolt being fixedly connected to the concrete pile foundation, and the upper and lower clamp plates being tightened by the bolt, thereby reinforcing the base plate and the communication tower base column, and facilitating installation.

[0005] For example, Chinese invention patent application number CN202311612212.0 discloses a communication tower reinforcement device, including a base block. First fixing blocks are uniformly fixed at equal angles and distances on the top of the base block. First support columns are arranged between several of the first fixing blocks. First connecting blocks and second connecting blocks are movably installed at the outer top edges of the first support columns. This invention achieves the reinforcement effect by having the first connecting ring plate, the second connecting ring plate, the protruding column, the first insertion slot, the second insertion slot, and the first and second connecting blocks rotate and approach each other, causing the connecting ribs and connecting slots to connect. Through the mutual approach of the first and second connecting plates and the mutual connection of the bolt column and bolt connection hole, the first and second connecting blocks fix the first and second connecting ring plates, and tighten the connection between the first and second support columns, thus achieving the reinforcement effect on the communication tower.

[0006] In existing technologies, if a fixing block needs to be installed on the tower column, most towers do not have this fixing block installed at the factory, which requires on-site welding. On-site welding will damage the galvanized layer of the tower column, which is not allowed in most cases. If the bottom end of the diagonal support is hinged to the masonry base, most tower foundations do not have this fixing point reserved, which requires drilling, rebar installation and other operations on the concrete foundation later, which is quite complicated. If the anti-collision frame needs to be installed on the masonry base before the tower column is installed, it cannot be installed on the already built tower. Utility Model Content

[0007] This utility model addresses the shortcomings of existing technologies by providing a device for reinforcing the base of iron tower columns.

[0008] The tower column base reinforcement device includes: steel plate hoop, fastening bolts, vertical adjusting bolts, horizontal tightening bolts, and pads;

[0009] The steel plate hoop consists of a vertical plate, stiffening plates, and horizontal inserts. The vertical plate is L-shaped with outward 90° folded edges on both sides. Multiple bolt holes are provided on the folded edges, and multiple horizontal stiffening plates are provided. A rectangular hole is opened at the top of the vertical plate, and the horizontal insert is embedded and welded to the rectangular hole. Horizontal threaded holes are opened on both sides of the horizontal insert, and a vertical threaded hole is opened in the middle.

[0010] The vertical adjusting bolts are installed through the vertical threaded holes of the horizontal inserts to adjust the height of the steel plate hoop so that the horizontal inserts are aligned with the bottom surface of the base plate of the tower column.

[0011] The horizontal tightening bolts are inserted through the horizontal threaded holes of the horizontal inserts, and the pads are installed at the corresponding positions on the base plate of the tower column. Multiple horizontal tightening bolts are used to press multiple pads against the side of the base plate of the tower column, thereby limiting the horizontal displacement of the base plate of the tower column.

[0012] Furthermore, four steel plates are arranged as a group and connected by fastening bolts to form a rectangular frame, which is used to clamp onto the square foundation column head;

[0013] Alternatively, the steel plate hoop can be in sets of two, each U-shaped, to fit the narrower foundation column heads.

[0014] Furthermore, there are 8 horizontal tightening bolts and shims, evenly distributed in four directions around the base plate of the tower column, with 2 in each direction.

[0015] Furthermore, the tower base reinforcement device is adapted to a circular foundation column head or a circular tower base plate, and the curvature of the steel plate hoop matches the outline of the circular foundation column head.

[0016] Furthermore, a pressure sensor is connected to the top of the horizontal tightening bolt to monitor the horizontal force on the base plate of the tower column in real time.

[0017] Furthermore, the vertical adjusting bolts have graduated markings on their threads. By observing the displacement of the threads after tightening, it can be determined whether the foundation column head has settled.

[0018] Furthermore, the pad is a rigid metal pad, and its shape fits the edge of the base plate of the tower column, ensuring that the tightening force of the horizontal tightening bolt is evenly transmitted to the base plate of the tower column.

[0019] Furthermore, the pad block is U-shaped, with an opening width slightly larger than the thickness of the base plate of the tower column.

[0020] Furthermore, the end of the horizontal tightening bolt is conical, and the U-shaped groove of the pad is provided with a conical hole.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. The tower base reinforcement device of this utility model uses 8 evenly distributed horizontal tightening bolts and metal pads that fit against the base plate of the tower base to form a rigid tightening on the base plate of the tower base from four directions, directly restricting the horizontal displacement of the base plate. This solution allows the horizontal force of the tower to be directly transmitted to the foundation column head through the reinforcement device, avoiding the bending of the anchor bolts due to bearing the horizontal force alone, significantly reducing the safety hazards of suspended anchor bolts, and solving the problem of anchor bolt protection for existing towers.

[0023] 2. The tower column base reinforcement device of this utility model adopts a detachable steel plate hoop splicing structure and fastening bolts to assemble the steel plate hoop without welding; the height is adjusted by vertical adjustment bolts, without foundation pretreatment, and the horizontal tightening bolts directly tighten the pads. There is no on-site welding, rebar installation or foundation chiseling operation throughout the process. It is suitable for the reinforcement needs of existing towers, greatly shortens the construction period and reduces the risk of damage to the original structure of the tower.

[0024] 3. The tower column base reinforcement device of this utility model provides four rectangular steel plate hoops to accommodate square foundations and two U-shaped steel plate hoops to accommodate narrow foundations, breaking the limitation of existing technology on the single foundation size; the curvature of the steel plate hoops can match the circular foundation column head or the circular tower base plate, overcoming the defect that existing reinforcement devices are only suitable for square structures; the vertical adjustment bolts can precisely adjust the height of the steel plate hoops to align the horizontal insert with the tower base plate, and the horizontal tightening bolts can flexibly compensate for horizontal errors, adapting to common installation deviation problems of tower column bases;

[0025] 4. The tower column base reinforcement device of this utility model can monitor the horizontal force on the base plate of the tower column in real time by connecting a pressure sensor to the top of the horizontal tightening bolt, and give timely warning of abnormal stress. At the same time, a scale is set at the thread of the vertical adjusting bolt, and the settlement of the foundation column head can be intuitively judged by observing the changes in the thread displacement. This realizes dual monitoring of reinforcement effect and foundation condition, solves the shortcoming of existing reinforcement devices that only reinforce without monitoring, and improves the long-term operational safety of the tower.

[0026] 5. The tower column base reinforcement device of this utility model uses a U-shaped metal rigid structure for the pad, with an opening width adapted to the thickness of the tower column base plate. The groove fits tightly with the edge of the base plate, ensuring that the tightening force of the horizontal tightening bolt is evenly transmitted to the base plate and avoiding local stress concentration. The end of the horizontal tightening bolt is set as a cone shape, and a cone-shaped through hole is opened at the corresponding position of the pad to improve the fit between the bolt and the pad and reduce the risk of slippage during the tightening process. The vertical plate is equipped with a horizontal stiffening plate to enhance the overall rigidity of the steel plate hoop, prevent the reinforcement device itself from deforming, and ensure the stability of the horizontal force transmission path, which is superior to the stress structure of simple inclined support in the prior art. Attached Figure Description

[0027] Figure 1 A three-dimensional structural diagram of the tower column base reinforcement device;

[0028] Figure 2 for Figure 1 Front view structural diagram;

[0029] Figure 3 for Figure 2 Top view of the structure;

[0030] Figure 4 for Figure 1 Enlarged 3D structural diagram of the mid-level inlay;

[0031] Figure 5-a and Figure 5-b for Figure 1 A three-dimensional structural diagram of the connection between the horizontal tightening bolt and the pad;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Steel plate hoop; 2. Fastening bolt; 3. Vertical adjusting bolt; 4. Horizontal tightening bolt; 5. Spacer block; 101. Vertical plate; 102. Stiffening plate; 103. Horizontal insert; 104. Horizontal threaded hole; 105. Vertical threaded hole; 8. Foundation column head; 9. Tower column base; 10. Anchor bolt; 11. Tower column base plate. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] This utility model provides a tower base reinforcement device that overcomes the shortcomings of existing technologies. It proposes a tower base reinforcement device for existing towers that eliminates the need for on-site welding and rebar installation, making installation more convenient. This utility model uses a detachable metal structure to reinforce the tower base, fixing the base plate 11 of the tower base around its perimeter. This prevents horizontal displacement, and the horizontal force of the tower is directly transmitted from the base plate 11 to the foundation column head 8 through the aforementioned tower base reinforcement device. This avoids the risk of the anchor bolts 10 bending due to horizontal force and prevents safety hazards caused by the anchor bolts 10 being suspended without protection. At the same time, it can also monitor the stress on the tower base and the settlement of the tower foundation.

[0036] like Figures 1 to 3 As shown, the tower column base reinforcement device includes: steel plate hoop 1, fastening bolt 2, vertical adjusting bolt 3, horizontal tightening bolt 4, and pad 5;

[0037] The steel plate hoop 1 is composed of a vertical plate 101, a stiffening plate 102 and a horizontal insert 103. The vertical plate 101 is L-shaped in general, with outward 90° folded edges on both sides. Multiple bolt holes are provided on the folded edges, and multiple horizontal stiffening plates 102 are provided. A rectangular hole is opened at the top of the vertical plate 101, and the horizontal insert 103 is embedded and welded to the rectangular hole. The horizontal insert 103 has through horizontal threaded holes 104 on both sides and a vertical threaded hole 105 in the middle.

[0038] The vertical adjusting bolt 3 is installed through the vertical threaded hole 105 of the horizontal insert 103 to adjust the height of the steel plate hoop so that the horizontal insert 103 is aligned with the bottom surface of the base plate 11 of the iron tower column.

[0039] The horizontal tightening bolt 4 is inserted through the horizontal threaded hole 104 of the horizontal insert 103, and the pad 5 is installed at the corresponding position of the iron tower column base plate 11. Multiple horizontal tightening bolts 4 are used to press multiple pads 5 against the side of the iron tower column base plate 11 to limit the horizontal displacement of the iron tower column base plate 11.

[0040] Specifically, the upright plate 101 is L-shaped with 90° outward flanges on both sides. The flanges are integrally formed with the upright plate 101, and multiple bolt holes are provided on the flanges. A rectangular hole is provided at the top of the upright plate 101, and a horizontal insert 103 is fixed to the rectangular hole of the upright plate 101 by inlay welding, so that the horizontal insert 103 and the upright plate 101 are firmly connected as a whole. Multiple stiffening plates 102 are provided on the upright plate 101 to enhance the strength and stability of the upright plate 101. The stiffening plates 102 are usually fixed to the upright plate 101 by welding or other methods.

[0041] The steel plate hoop 1 consists of multiple parts, including a vertical plate 101, a stiffening plate 102, and a horizontal insert 103. These parts are connected by fastening bolts 2 passing through bolt holes on the folded edge, forming a ring structure for attaching to the foundation column head 8 of the iron tower. The vertical adjusting bolt 3 passes through the vertical threaded hole 105 of the horizontal insert 103. By rotating the vertical adjusting bolt 3, it can move up and down within the vertical threaded hole 105, thereby adjusting the height of the steel plate hoop 1. The horizontal tightening bolt 4 passes through the horizontal threaded hole 104 of the horizontal insert 103. Its front end is used to tighten the pad 5 installed at the corresponding position on the base plate 11 of the iron tower column. By tightening the horizontal tightening bolt 4, the pad 5 can be tightly pressed against the side of the base plate 11 of the iron tower column.

[0042] The steel plate hoop 1 is the core support structure of the entire reinforcement device. It consists of four pieces forming a ring around the foundation column head, providing a basic framework for subsequent reinforcement operations and serving to fix and constrain the base plate 11 of the iron tower column. The L-shaped vertical plate 101 is adapted to the shape of the foundation column head 8, and the bolt holes on its folded edge are used to install fastening bolts 2 to realize the connection and fixation between the various parts of the steel plate hoop 1. The rectangular holes on the vertical plate 101 are used to install horizontal inserts 103.

[0043] Multiple horizontal stiffening plates 102 are installed on the vertical plate 101, which enhances the strength and rigidity of the vertical plate 101, ensures that the steel plate hoop 1 will not deform when bearing the force transmitted from the iron tower column foot 9, and improves the overall stability of the steel plate hoop 1.

[0044] like Figure 4 As shown, the horizontal insert 103 is embedded and welded into the rectangular hole of the vertical plate 101. The horizontal threaded holes 104 on both sides and the vertical threaded hole 105 in the middle provide installation positions for the horizontal tightening bolt 4 and the vertical adjusting bolt 3, respectively. It is a key component for realizing the horizontal tightening and vertical adjustment functions.

[0045] The fastening bolts 2 are used to connect the vertical plates 101 of the steel plate hoop 1. By passing through the bolt holes on the folded edge, the multiple vertical plates 101 are tightly connected together to form a complete ring structure, ensuring that the steel plate hoop 1 can be firmly fastened to the foundation column head 8 and preventing the steel plate hoop 1 from loosening.

[0046] The vertical adjusting bolt 3 passes through the vertical threaded hole 105 of the horizontal insert 103. By rotating the vertical adjusting bolt 3, its position in the vertical threaded hole 105 can be adjusted, thereby achieving the purpose of adjusting the overall height of the steel plate hoop 1, so that the horizontal insert 103 is aligned with the bottom surface of the base plate 11 of the iron tower column, ensuring the accuracy of the subsequent horizontal tightening operation, and adapting to the possible installation height error of the iron tower column base 9 in the vertical direction of the foundation column head 8.

[0047] like Figure 5-a and Figure 5-b As shown, the horizontal tightening bolt 4 passes through the horizontal threaded hole 104 of the horizontal insert 103. Its function is to tighten the pad 5 installed at the corresponding position of the tower column base plate 11. Through the combined action of multiple horizontal tightening bolts 4, the tower column base plate 11 is tightly fixed around its perimeter, restricting the horizontal displacement of the tower column base plate 11. This allows the horizontal force on the tower column base plate 11 to be transmitted to the foundation column head 8 through the reinforcement device, preventing the anchor bolt 10 from bending due to the horizontal force.

[0048] The pad 5 is installed at the corresponding position of the base plate 11 of the tower column, between the horizontal tightening bolt 4 and the base plate 11 of the tower column. It plays the role of transmitting the tightening force and protecting the base plate 11 of the tower column. The pad 5 cooperates with the horizontal tightening bolt 4 to evenly transmit the tightening force of the horizontal tightening bolt 4 to the side of the base plate 11 of the tower column, ensuring that the base plate 11 of the tower column is subjected to uniform force, while avoiding direct damage to the base plate 11 of the tower column by the horizontal tightening bolt 4.

[0049] The thickness of the upright plate 101 is 12~20mm, which is determined according to the height of the iron tower and the stress on the base plate 11 of the iron tower column; the spacing of the stiffening plate 102 is determined according to the spacing of the fastening bolt 2. For example, if the fastening bolt 2 is M20 and the bolt hole spacing is 80mm, the spacing of the stiffening plate 102 is also 80mm; the installation width of the horizontal insert 103 is slightly larger than the width of the horizontal insert 103. For example, the width of the horizontal insert 103 is 240mm, the thickness is 40mm, the short side width is 100mm, the opening height is 41mm, and the opening width (on one side) is 242mm.

[0050] Furthermore, four steel plate hoops 1 are grouped together and connected by fastening bolts 2 to form a rectangular frame, which is used to fasten the square foundation column head 8;

[0051] Alternatively, steel plate hoop 1 can be a set of two pieces, each piece being U-shaped, to fit the foundation column head 8 with a smaller width;

[0052] Specifically, each steel plate hoop 1 consists of a vertical plate 101, a stiffening plate 102, and a horizontal insert 103. The vertical plate 101 is L-shaped with outward 90° folded edges on both sides. Multiple bolt holes are provided on the folded edges, which are the key structures for connecting the various steel plate hoops 1. A rectangular hole is opened at the top of the vertical plate 101, and the horizontal insert 103 is embedded and welded to the rectangular hole. The horizontal insert 103 has through horizontal threaded holes 104 on both sides and a vertical threaded hole 105 in the middle. The stiffening plate 102 is set on the vertical plate 101 to enhance the strength of the vertical plate 101.

[0053] Four steel plate hoops 1 are connected by fastening bolts 2 through the bolt holes on the folded edge, forming a rectangular frame. This rectangular frame is used to fasten the square foundation column head 8. By tightening the fastening bolts 2, the four steel plate hoops 1 are tightly fitted around the foundation column head 8, achieving the initial fixation and constraint of the foundation column head 8.

[0054] Each U-shaped steel plate hoop 1 is also composed of a vertical plate 101, a stiffening plate 102, and a horizontal insert 103. The vertical plate 101 is L-shaped and has outward 90° folded edges on both sides. There are bolt holes on the folded edges. There is a rectangular hole at the top of the vertical plate. The horizontal insert 103 is embedded and welded to the rectangular hole. The horizontal insert 103 has horizontal threaded holes 104 on both sides and a vertical threaded hole 105 in the middle. The stiffening plate 102 strengthens the vertical plate 101. Its basic structure is similar to that of a single piece in a four-piece hoop.

[0055] Two U-shaped steel plate hoops 1 work together to fit the narrower foundation column head 8. The two U-shaped steel plate hoops 1 can be connected by fastening bolts 2 through the bolt holes on their respective folded edges, or directly clamped onto the foundation column head 8 by their own structure, thereby reinforcing the narrower foundation column head 8.

[0056] Furthermore, there are 8 horizontal tightening bolts 4 and 8 pads 5, which are evenly distributed in four directions around the base plate 11 of the iron tower column, with 2 in each direction;

[0057] Specifically, by tightening the horizontal jacking bolt 4, it presses against the pad 5, thereby firmly fixing the tower base plate 11 around its perimeter. This restricts the horizontal displacement of the tower base plate 11, ensuring that it will not slide horizontally when the tower is subjected to horizontal forces, thus guaranteeing the stability of the tower. The horizontal force on the tower base 9 is transferred to the pad 5, then through the pad 5 to the tower base plate 11, and finally to the foundation column head 8. This avoids the risk of the anchor bolt 10 bending due to excessive horizontal forces, improving the service life and safety of the anchor bolt 10. Depending on the actual installation conditions and the stress requirements of the tower, the tightening degree is adjusted by rotating the horizontal jacking bolt 4 to ensure that the fixing effect of the tower base plate 11 meets the design requirements.

[0058] The shim 5 is installed between the base plate 11 of the tower column and the horizontal tightening bolt 4 to prevent the horizontal tightening bolt 4 from directly contacting the base plate 11 of the tower column, thus preventing damage to the base plate 11 and protecting it. The shim 5 can evenly transmit the tightening force applied by the horizontal tightening bolt 4 to the side of the base plate 11 of the tower column, making the stress on the base plate 11 more even and avoiding local stress concentration that could damage it. Since the shim 5 can be selected and adjusted according to actual conditions, it can adapt to base plates 11 of different sizes and shapes, as well as different installation requirements, improving the versatility and adaptability of the reinforcement device.

[0059] Furthermore, the tower base reinforcement device is adapted to the circular foundation column head 8 or the circular tower base plate 11, and the curvature of the steel plate hoop 1 matches the outline of the circular foundation column head 8.

[0060] Specifically, when adapting to the circular foundation column head 8, the steel plate hoop 1 is designed with an arc-shaped structure, and a single set can be set with 2-4 pieces. The number is adjusted according to the diameter of the circular foundation column head 8. The inner arc of each arc-shaped steel plate hoop 1 is completely matched with the outer contour arc of the circular foundation column head 8, forming a close-fitting and tight connection. During installation, multiple arc-shaped steel plate hoops 1 surround the circular foundation column head 8, and fastening bolts 2 are inserted through the bolt holes on both sides. After tightening, the inner side of the arc-shaped steel plate hoop 1 is tightly fitted with the outer surface of the circular foundation column head 8 without gaps, ensuring that there is no horizontal relative displacement between the two. The overall vertical fine adjustment is only achieved by the vertical adjustment bolts 3.

[0061] The horizontal insert 103 is still fixed by inlay welding and is connected to the vertical plate of the arc-shaped steel plate hoop 1. The upper part of the vertical plate of the arc-shaped steel plate hoop 1 has a rectangular hole, and the horizontal insert 103 is welded and fixed at the hole, forming a rigid connection between the two. Since the steel plate hoop 1 is arc-shaped, the installation position of the horizontal insert 103 needs to be evenly distributed along the circumference of the arc-shaped steel plate hoop 1. For example, each arc-shaped steel plate hoop 1 corresponds to 1-2 horizontal inserts to ensure that the subsequent horizontal tightening bolts 4 can apply tightening force evenly to the central circular iron tower column base plate 11 from the circumference of the circular foundation column head 8.

[0062] The connection method between the horizontal tightening bolt 4 and the horizontal insert 103 remains unchanged, and a detachable threaded connection is still formed through the horizontal threaded hole 104 of the horizontal insert 103; however, the axial direction of the horizontal threaded hole 104 needs to be adjusted to be along the radial direction of the circular foundation column head to ensure that the bolt can point to the center of the circular iron tower column base plate 11 when tightened. The pad 5 is designed as an arc-shaped contact surface according to the outline of the circular iron tower column base plate 11. The inner arc matches the outer outline of the base plate. Its non-contact surface is rigidly abutted against the end of the horizontal tightening bolt 4. The end shape can be set as arc or conical to match the force-bearing surface of the pad 5 and form a detachable abutment relationship.

[0063] The arc-shaped steel plate hoop 1 is fixed to the circular foundation column head 8 by fastening bolts 2. The horizontal insert 103 is uniformly welded around the circumference of the steel plate hoop 1. The threaded hole is set along the radial direction. The horizontal tightening bolt 4 is inserted into the threaded hole and moves in and out along the radial direction. The arc-shaped pad 5 fits against the circular base plate and receives the bolt tightening force. Finally, a coaxial rigid connection system is formed of the circular foundation column head 8, the arc-shaped steel plate hoop 1, the horizontal insert 103, the horizontal tightening bolt 4, the arc-shaped pad 5, and the circular iron tower column base plate 11, ensuring that each structure is symmetrically distributed around the central axis of the circular foundation column head 8 / iron tower column base plate 11.

[0064] Furthermore, a pressure sensor is connected to the top of the horizontal tightening bolt 4 to monitor the horizontal force on the base plate 11 of the tower column in real time.

[0065] Specifically, the pressure sensor is used to monitor the horizontal force on the base plate 11 of the tower column in real time. It can sense the pressure change on the top of the horizontal tightening bolt 4, and this pressure change is closely related to the horizontal force on the base plate 11 of the tower column.

[0066] When the tower is subjected to a horizontal force, the horizontal force will be transmitted through the base plate 11 of the tower column to the pad 5, and then from the pad 5 to the horizontal tightening bolt 4, and finally act on the pressure sensor. In other words, the horizontal force on the base plate 11 of the tower column will be transmitted to the pressure sensor in the form of pressure.

[0067] Pressure sensors typically contain sensitive elements. When subjected to pressure, the physical properties of these elements change, and this change is converted into an electrical signal. For example, a resistive pressure sensor changes the resistance value through pressure, thereby altering the current or voltage in the circuit. The converted electrical signal is transmitted to a data acquisition device, which amplifies and filters the signal before converting it into a readable pressure value. This processed pressure value is then displayed in real-time on a monitoring terminal. Operators can monitor the magnitude of the horizontal force on the base plate 11 of the tower column through the terminal. By analyzing this data, abnormal stress conditions on the tower column base 9 can be detected promptly. For instance, a sudden increase in horizontal force may indicate that the tower is subjected to abnormal external forces or that the foundation is unstable, allowing for appropriate measures to be taken to ensure the tower's safety.

[0068] Furthermore, the thread position of the vertical adjusting bolt 3 is marked with a scale. By observing the displacement change of the thread after tightening, it can be determined whether the foundation column head 8 has settled.

[0069] Specifically, one of the main functions of the vertical adjusting bolt 3 is to adjust the height of the steel plate hoop 1. When installing the tower column base reinforcement device, there may be some errors in the width of the foundation column head 8 and the vertical installation height of the tower column base plate 11 at the foundation column head 8. By rotating the vertical adjusting bolt 3, its position in the vertical threaded hole 104 of the horizontal insert 103 can be changed, thereby adjusting the overall height of the steel plate hoop 1 in the vertical direction, so that the horizontal insert 103 is aligned with the bottom surface of the tower column base plate 11, ensuring that the subsequent horizontal tightening bolt 4 can effectively tighten the tower column base plate 11.

[0070] The thread position of the vertical adjusting bolt 3 is marked with a scale. After the initial installation of the device, the thread position of the vertical adjusting bolt 3 after tightening is recorded. Over time, if the foundation column head 8 settles, the foundation column head 8 will move downward relative to the steel plate hoop 1. This will cause the relative position of the vertical adjusting bolt 3 in the vertical threaded hole 105 of the horizontal insert 103 to change, that is, the tightening state of the thread changes. By observing the thread position of the vertical adjusting bolt 3 again and comparing it with the initially recorded scale, it can be determined whether the foundation column head 8 has settled and the approximate degree of settlement. For example, if it is found that the thread of the vertical adjusting bolt 3 is turned outward relative to the initial position, it indicates that the foundation column head 8 may have settled, causing the steel plate hoop 1 to rise relatively. Thus, the settlement of the foundation column head 8 can be intuitively reflected by the change in the thread position.

[0071] The horizontal insert 103 has a vertical threaded hole 105, which provides an installation position for the vertical adjusting bolt 3, allowing the vertical adjusting bolt 3 to be installed on the steel plate hoop 1 and the height of the steel plate hoop 1 to be adjusted by rotation. It is a key connecting component to realize the vertical adjustment function. Connecting the vertical adjusting bolt 3 to the steel plate hoop 1 ensures that the vertical adjusting bolt 3 can function stably.

[0072] The steel plate hoop 1 is connected by fastening bolts 2 to form a ring structure and is hooped on the foundation column head 8. It provides an installation base for the vertical adjustment bolts 3 and the horizontal insert 103, and plays a role in fixing and supporting, ensuring that the entire reinforcement device can be stably installed on the foundation column head 8. At the same time, it cooperates with the vertical adjustment bolts 3 to realize the adjustment of the height of the base plate 11 of the iron tower column and the monitoring function of the settlement of the foundation column head 8.

[0073] The pad 5 is located between the bottom of the vertical adjusting bolt 3 and the foundation column head 8, and plays a role in buffering and supporting. On the one hand, it can protect the surface of the foundation column head 8 from being directly squeezed and damaged by the vertical adjusting bolt 3. On the other hand, it can ensure that the vertical adjusting bolt 3 is subjected to uniform force during the adjustment process, making the adjustment process more stable and accurate.

[0074] Furthermore, the pad 5 is a rigid metal pad, and its shape fits the edge of the base plate 11 of the tower column, ensuring that the tightening force of the horizontal tightening bolt 4 is evenly transmitted to the base plate 11 of the tower column.

[0075] Specifically, the pad 5 is made of rigid metal, and its contact surface shape is completely fitted to the edge contour of the tower column base plate 11. If the tower column base plate 11 is square, the corresponding side of the pad 5 is set as a flat surface; if the tower column base plate 11 is round, the corresponding side of the pad 5 is set as an arc. The two form a tight and rigid connection through surface contact. During installation, the pad 5 is placed directly at the preset position on the edge of the tower column base plate 11 without any additional fasteners, ensuring that there is no gap between it and the tower column base plate 11, and avoiding local suspension when the tightening force is transmitted.

[0076] The horizontal tightening bolt 4 is inserted through the horizontal threaded hole 104 of the horizontal insert 103. Its end is rigidly abutted against the non-contact surface of the pad 5. The bolt end can be set to match the shape of the pad 5. The corresponding position of the pad 5 is set to match the force-bearing surface, ensuring that when the bolt is tightened, the tightening force can be directly transmitted to the pad along the axial direction without the risk of offset or slippage.

[0077] The horizontal insert 103 is embedded and welded to the steel plate hoist upright plate 1. It has through horizontal threaded holes 104 on both sides. The horizontal tightening bolt 4 is inserted into the threaded hole by thread engagement to form a detachable threaded connection. The horizontal insert 103 is tightened on the foundation column head 8 with the steel plate hoist 1 and the position is fixed. The horizontal tightening bolt 4 can be rotated clockwise / counterclockwise to move in and out along the axis of the threaded hole to achieve the tightening or loosening operation of the pad 5.

[0078] The steel plate hoop 1 is fastened to the foundation column head by the fastening bolt 2. The horizontal insert 103 is rigidly connected to the steel plate hoop 1. Therefore, the horizontal position of the horizontal tightening bolt 4 and the pad 5 is positioned by the fixed relationship between the steel plate hoop 1 and the foundation column head 8, ensuring that the tightening direction of the horizontal tightening bolt 4 is always perpendicular to the edge of the base plate 11 of the tower column, and avoiding uneven force caused by the deviation of the tightening force direction.

[0079] Furthermore, the pad block 5 is U-shaped, and the opening width is slightly larger than the thickness of the base plate 11 of the tower foot column;

[0080] Specifically, the opening of the U-shaped pad faces the base plate 11 of the tower column, and its opening width is slightly larger than the thickness of the base plate 11 of the tower column. The difference is usually 1-3mm, which is adapted to the thickness error of the base plate 11 of the tower column to form a slot-type fitting connection. During installation, the opening of the U-shaped pad is directly snapped onto the edge of the base plate 11 of the tower column. The upper and lower clamping surfaces on the inner side of the pad 5 are tightly fitted with the top and bottom surfaces of the base plate 11 of the tower column, and the side clamping surfaces are fitted with the outer surface of the base plate 11 of the tower column. This achieves a three-sided wrap-around contact with the edge of the base plate 11 of the tower column, with no obvious gaps. The stable snap-fit ​​state is maintained only by the tightening force of the horizontal tightening bolt 4, without the need for additional fasteners.

[0081] The end of the horizontal tightening bolt 4 forms a rigid abutment with the outer plane of the U-shaped pad 5. If it is adapted to the circular iron tower column base plate 11, the outer plane of the U-shaped pad 5 can be designed as an arc that matches the circumference of the circular iron tower column base plate 11, ensuring that the end of the horizontal tightening bolt 4 can be perpendicularly abutted against the outer side of the pad 5. After the horizontal tightening bolt 4 is inserted through the horizontal threaded hole 104 of the horizontal insert 103 along the radial direction of the circular foundation column head 8, the horizontal tightening bolt 4 directly abuts against the outer side of the U-shaped pad 5, forming a detachable abutment relationship. The tightening force can be adjusted by rotating the horizontal tightening bolt 4.

[0082] The U-shaped opening sleeve is placed on the edge of the base plate 11 of the tower column. The "three-sided wrapping" structure restricts the displacement of the pad 5 itself in the axial vertical direction and radial horizontal direction along the base plate 11 of the tower column. This avoids the problem that traditional flat pads are prone to slipping due to the offset of the clamping force. It is especially suitable for the scenario of circular base plates 11 of the tower column, ensuring that the pad 5 is always in contact with the edge of the base plate 11 of the tower column, and the force transmission position is stable.

[0083] The width of the U-shaped opening is slightly larger than the thickness of the base plate 11 of the tower support column. This avoids installation difficulties caused by excessive tightness and can convert the "single-point tightening force" of the horizontal tightening bolt 4 into a "three-sided uniform force" through the three clamping surfaces on the top, bottom, and sides. This force is evenly transmitted to the edge of the base plate 11 of the tower support column, avoiding local stress concentration in the base plate 11 of the tower support column. At the same time, it enhances the constraint effect on the horizontal displacement of the base plate 11 of the tower support column and can simultaneously limit radial and slight torsional displacement.

[0084] The slight allowance of 1-3mm in the width of the U-shaped opening can accommodate thickness errors of different tower foot plates. For example, if a 10mm thick foot plate is set, the actual thickness is 9.5-10.5mm. There is no need to customize special pads 5 for the base plates 11 of tower foot columns with different thicknesses, which improves the versatility of the device and is especially suitable for scenarios where the thickness of the base plates of existing towers varies.

[0085] Furthermore, the ends of the horizontal tightening bolts are conical, and the U-shaped groove of the pad is provided with conical holes;

[0086] Specifically, the end of the horizontal tightening bolt 4 is conical, and the outer part of the U-shaped groove of the U-shaped pad 5 is provided with a conical non-through hole that matches the end of the horizontal tightening bolt 4. The taper and depth of the hole are consistent with the end of the horizontal tightening bolt 4 to ensure a complete fit. The two form a conical mating rigid connection. During installation, the horizontal tightening bolt 4 is screwed into the horizontal threaded hole 104 of the horizontal insert 103 so that the conical end is precisely embedded in the conical non-through hole of the U-shaped pad 5 without obvious gaps. The tight fit is achieved by the thread tightening force to prevent relative sliding between the end of the horizontal tightening bolt 4 and the pad 5.

[0087] The horizontal insert 103 is welded to the arc-shaped steel plate hoop plate 1. Its horizontal threaded hole 104 provides guidance for the horizontal tightening bolt 4 along the radial direction of the circular foundation column head 8, ensuring that the horizontal tightening bolt 4 is screwed in radially and fitted with the conical surface of the U-shaped pad 5. The U-shaped pad 5 indirectly forms a closed-loop force-bearing structure with the arc-shaped steel plate hoop 1 and the horizontal insert 103 by engaging with the base plate 11 of the iron tower column and fitting with the conical surface of the horizontal tightening bolt 4. The structure is coaxially distributed around the circular foundation column head 8 / the base plate 11 of the iron tower column.

[0088] The conical structure concentrates the clamping force of the horizontal clamping bolt 4 on the conical contact area. Compared with the flat end, the force per unit area is more uniform. The axial clamping force of the horizontal clamping bolt 4 can be transferred to the U-shaped pad 5 without loss, avoiding local deformation of the pad due to the small contact area and improving the force transmission efficiency.

[0089] The inner wall of the conical non-through hole is an arc-shaped conical surface, which can evenly distribute the concentrated force transmitted by the end of the horizontal tightening bolt 4 to the whole of the U-shaped pad 5 along the conical surface, and then transmit it to the edge of the iron tower column base plate 11 through the contact surface between the pad 5 and the base plate 11, further avoiding local stress concentration, and protecting the galvanized layer of the iron tower column base plate 11 from damage.

[0090] The non-through-hole design prevents the end of the horizontal tightening bolt 4 from penetrating the pad 5 and contacting the base plate 11 of the tower column, thus preventing the horizontal tightening bolt 4 from directly scraping the base plate 11 of the tower column. Furthermore, the cone surface size can be uniformly designed according to the specifications of the horizontal tightening bolt 4, eliminating the need to adjust the pad structure based on the thickness and shape of the base plate 11 of the tower column, thereby improving the standardization and versatility of the device.

[0091] The preferred embodiments of this utility model are not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the concept and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for reinforcing the base of a steel tower, characterized in that, include: Steel plate hoops, fastening bolts, vertical adjusting bolts, horizontal tightening bolts, and spacers; The steel plate hoop consists of a vertical plate, stiffening plates, and horizontal inserts. The vertical plate is L-shaped with outward 90° folded edges on both sides. Multiple bolt holes are provided on the folded edges, and multiple horizontal stiffening plates are provided. A rectangular hole is opened at the top of the vertical plate, and the horizontal insert is embedded and welded to the rectangular hole. The horizontal insert has through-holes on both sides and through-holes in the middle. The vertical adjusting bolts are installed through the vertical threaded holes of the horizontal inserts to adjust the height of the steel plate hoop so that the horizontal inserts are aligned with the bottom surface of the base plate of the tower column. The horizontal tightening bolts are inserted through the horizontal threaded holes of the horizontal inserts, and the pads are installed at the corresponding positions on the base plate of the tower column. Multiple horizontal tightening bolts are used to press multiple pads against the side of the base plate of the tower column, thereby limiting the horizontal displacement of the base plate of the tower column.

2. The tower column base reinforcement device according to claim 1, characterized in that, Four steel plates are arranged as a set, and are connected by fastening bolts to form a rectangular frame, which is used to clamp onto the square foundation column head; Alternatively, the steel plate hoop can be in sets of two, each U-shaped, to fit the narrower foundation column heads.

3. The tower column base reinforcement device according to claim 1, characterized in that, There are 8 horizontal tightening bolts and shims, evenly distributed in four directions around the base plate of the tower column, with 2 in each direction.

4. The tower column base reinforcement device according to claim 1, characterized in that, The tower base reinforcement device is compatible with circular foundation column heads or circular tower base plates, and the curvature of the steel plate hoop matches the outline of the circular foundation column head.

5. The tower column base reinforcement device according to claim 1, characterized in that, A pressure sensor is connected to the top of the horizontal tightening bolt to monitor the horizontal force on the base plate of the tower column in real time.

6. The tower column base reinforcement device according to claim 1, characterized in that, The vertical adjusting bolts have graduated markings on their threads. By observing the displacement of the threads after tightening, it can be determined whether the foundation column head has settled.

7. The tower column base reinforcement device according to claim 1, characterized in that, The pad is a rigid metal pad, shaped to fit the edge of the base plate of the tower column, ensuring that the tightening force of the horizontal tightening bolt is evenly transmitted to the base plate of the tower column.

8. The tower column base reinforcement device according to claim 1 or 7, characterized in that, The pad is U-shaped, with an opening width slightly larger than the thickness of the base plate of the tower column.

9. The tower column base reinforcement device according to claim 1, characterized in that, The end of the horizontal tightening bolt is conical, and the U-shaped groove of the pad has a conical hole.

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