Three-way adjusting device for uneven settlement of flat-pushing type power transmission line tower foundation

Abstract

This utility model provides a three-way adjustment device for uneven settlement of transmission line tower foundations, belonging to the field of tower foundation technology. It solves the problem of insufficient adjustment capacity in the vertical and two horizontal directions of existing tower foundation adjustment devices. The device is installed between the tower foot plate and the main foundation column, and is welded from a top plate, a cross steel plate, and a bottom plate. Two slots (slot 1) are formed on the bottom plate, corresponding to the positions of the anchor bolts installed on the main foundation column. Two slots (slot 2) are formed on the vertical plate of the cross steel plate above slot 1, perpendicular to slot 1, and connected to it. Four strip-shaped holes are formed on the top plate, and the tower foot plate is fixed to the top plate using connecting bolts and nuts. The straight line of the four long slots is perpendicular to the straight line of slot 1. This utility model is applicable to transmission line towers.

Description

Technical Field

[0001] This utility model provides a three-way adjustment device for uneven settlement of transmission line tower foundations, belonging to the field of tower foundation technology. Background Technology

[0002] With the accelerated construction of power transmission lines and the increasing strain on transmission corridors, power transmission lines inevitably pass through coal mine goaf areas. These goaf areas frequently experience soil subsidence and collapse, leading to uneven settlement of the power transmission tower foundations. This can cause the towers to tilt, deform, or even collapse, resulting in serious accidents.

[0003] When uneven settlement occurs in the foundations of iron towers in coal mine goaf areas, it is generally necessary to relocate power lines and towers, with project costs ranging from hundreds of thousands to tens of millions of yuan. This not only involves high investment but also requires prolonged power outages, has a long construction period, and results in poor economic and social benefits. Uneven settlement adjustment technology for tower foundations can significantly shorten power outage time and save on project investment.

[0004] Existing devices or methods for uneven settlement adjustment of tower foundations include: "An adjustable tower foot suitable for goaf areas (Announcement No. CN210049668U)", "A transmission line tower foundation connection structure with correction function (Announcement No. CN205776317U)", "A device for large-scale uneven settlement adjustment of transmission line tower foundations (Publication No. CN112431239A)", "A convenient device for settlement adjustment of transmission line tower foundations (Announcement No. CN216973474U)", and "A device for adjusting settlement and horizontal displacement of transmission line tower foundations (Announcement No. CN216999824U)".

[0005] Defects and shortcomings of existing regulating devices:

[0006] (1) Since the exposed height of the anchor bolts in the foundation is generally 280mm-440mm, when the existing adjustment method is implemented, the tower legs need to be raised an additional 300mm-500mm. Due to the influence of the self-weight of the conductor on the tower, the self-weight of the tower, and the rigidity of the tower itself, it is very difficult to raise the tower legs excessively and it is not easy to implement.

[0007] (2) When uneven vertical settlement of the foundation occurs, it is accompanied by horizontal deformation of varying degrees. Among the existing adjustment methods, only the "adjustment device for foundation settlement and horizontal displacement of transmission line towers with announcement number CN216999824U" takes into account the adjustment in the horizontal direction, but its adjustment range can only be adjusted in one horizontal direction, and the adjustment range is a one-time fixed size.

[0008] (3) Among the existing adjustment methods, vertical adjustment is divided into two types. One is a one-time fixed height adjustment, which cannot meet the subsequent settlement deformation adjustment. The other is to adjust the subsequent deformation by padding steel plates under the tower foot plate. However, the thickness and quantity of padding steel plates need to be selected according to the adjustment height. The adjustment size is not flexible and the steel plate processing requires slotting, which is inconvenient to implement.

[0009] (4) Since the settlement and deformation of the coal mine goaf is a dynamic process, the vertical and horizontal deformations change dynamically over time. Existing adjustment devices and methods are inconvenient for dynamic adjustment in the vertical and two horizontal directions, especially the adjustment capacity in the two horizontal directions is insufficient. Utility Model Content

[0010] To address the problem of insufficient adjustment capacity of existing tower foundation adjustment devices in the vertical and two horizontal directions, this utility model proposes a three-dimensional adjustment device for uneven settlement of transmission line tower foundations using a horizontal pushing mechanism. The device aims to improve the adaptability and stability of the tower foundation to ground settlement, and is simple to manufacture, easy to operate, and convenient for subsequent dynamic adjustment.

[0011] The technical solution adopted in this utility model is as follows: a three-way adjustment device for uneven settlement of transmission line tower foundation, which is installed between the tower foot plate and the main foundation column. The adjustment device is welded from a top plate, a cross steel plate and a bottom plate. Two slots are opened on the bottom plate, and the positions of the two slots correspond to the positions of the anchor bolts installed on the main foundation column. Two slots are opened on the vertical plate of the cross steel plate above the slots. The slots are perpendicular to the slots and the connection between the slots is continuous. Four strip holes are opened on the top plate. The tower foot plate is fixedly connected to the top plate through the four strip holes by connecting bolts and nuts. When the straight line of the long strip of the multiple strip holes is on the same plane as the straight line of the slot, the two are perpendicular to each other.

[0012] Furthermore, the height of slot two is greater than the exposed height of the anchor bolts.

[0013] Furthermore, the top plate and the bottom plate are parallel to each other.

[0014] Furthermore, the width of both the top plate and the bottom plate is greater than the width of the tower foot plate.

[0015] Furthermore, a sealing plate is provided on the bottom plate at one end of the trough. Bolt holes are provided on both the sealing plate and the bottom plates on both sides of the trough. Bolts pass through the bolt holes to fix the bottom plate and the sealing plate together.

[0016] Furthermore, the top plate and the bottom plate are made of steel plates of the same width.

[0017] Furthermore, the top plate is made of square steel plate, and the bottom plate is made of rectangular steel plate, both with the same width. The length of the bottom plate is greater than its width, and a slot is formed along the length of the bottom plate. Furthermore, connecting bolts pass through the strip holes in the tower foot plate and the top plate. Nuts are installed on the connecting bolts on both the upper and lower parts of the tower foot plate, and nuts are installed on the connecting bolts on both the upper and lower parts of the top plate.

[0018] Furthermore, the four strip-shaped holes are arranged in a square array.

[0019] Furthermore, the opening length of slot one is a through slot opened from one side of the base plate until it passes the intersection of slot two and the base plate and extends forward a certain distance.

[0020] The advantages of this utility model over the prior art are as follows:

[0021] (1) Horizontal push-in entry, without excessively raising the tower legs:

[0022] The base plate and the vertical plate connected to it are slotted so that the exposed anchor bolts can pass through the slots, thereby allowing the adjustment device to be smoothly pushed into the space between the tower foot plate and the main column of the foundation. After slotting, the tower legs do not need to be raised excessively due to the exposed height of the anchor bolts.

[0023] (2) Displacement adjustment in the first horizontal direction:

[0024] The width of the base plate is greater than the width of the tower leg plate. A groove is cut into the base plate to reserve the horizontal adjustment length, which allows the tower legs to be adjusted horizontally along the groove direction.

[0025] (3) Displacement adjustment in the second horizontal direction:

[0026] The top plate is wider than the foot plate. Strip holes perpendicular to the slotting direction are set on the top plate, allowing the tower legs to be adjusted horizontally along the direction of the strip holes.

[0027] (4) Horizontal-push vertical fixed settlement adjustment:

[0028] The adjustment device itself is designed according to the vertical uneven settlement height of the tower foundation. The adjustment device is pushed horizontally between the tower foot plate and the main column of the foundation to adjust the vertical uneven settlement of the tower foundation.

[0029] The exposed height of the anchor bolts pre-embedded in the main foundation column is generally 280mm-440mm. Conventional adjustment devices require raising the tower legs an additional 300mm-500mm. Due to the weight of the conductors on the tower, the weight of the tower itself, and the rigidity of the tower, excessive raising of the tower legs is very difficult. Using a horizontal pusher can effectively solve the problem of difficulty in raising the legs.

[0030] (5) Vertical dynamic settlement adjustment:

[0031] Connecting bolts are installed between the top plate of the regulating device and the base plate of the tower, so that a dynamically adjustable space is formed between the top plate of the regulating device and the base plate of the tower. This adjustment can be made to any size by connecting nuts on the upper and lower parts of the base plate.

[0032] (6) This device can be dynamically adjusted in two horizontal directions, and can be fixed and dynamically adjusted in the vertical direction.

[0033] (7) Simple processing, convenient operation, and easy dynamic adjustment in the later stage. Short construction period, convenient emergency repair, and significant savings in project investment compared with tower relocation and line relocation. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings:

[0035] Figure 1 This is a three-dimensional structural diagram of the adjustment device given in Embodiment 1 of this utility model;

[0036] Figure 2 This is a front view of the adjustment device according to Embodiment 2 of the present invention;

[0037] Figure 3 This is a top view of the adjustment device according to Embodiment 2 of this utility model;

[0038] Figure 4 This is a bottom view of the adjustment device according to Embodiment 2 of this utility model;

[0039] Figure 5 for Figure 2 Cross-sectional view of AA in the middle;

[0040] Figure 6 for Figure 2 Cross-sectional view of BB in the middle;

[0041] Figure 7 A schematic diagram of the structure for inserting steel plates when the iron tower experiences minor settlement;

[0042] Figure 8 This is a schematic diagram of the steel plate structure;

[0043] Figure 9 A schematic diagram of the structure for inserting an adjustment device when a steel tower experiences significant settlement.

[0044] In the diagram: 2 is the tower leg, 3 is the tower foot plate, 4 is the foundation column, 5 is the anchor bolt, 6 is the nut, 7 is the adjusting device, 8 is the connecting bolt, 9 is the cross steel plate, 10 is the top plate, 11 is the bottom plate, 12 is the strip hole, 13 is the first slot, 14 is the second slot, 15 is the sealing plate, 16 is the bolt hole, and 17 is the steel plate. Detailed Implementation

[0045] like Figures 1 to 9 As shown, this utility model provides a three-way adjustment device for uneven settlement of transmission line tower foundations. When the tower settles, it is placed between the main foundation column 4 and the tower foot plate 3 to adjust the uneven settlement and horizontal displacement of the tower foundation. It can also adjust the tower in the vertical direction and two horizontal directions. The transmission line tower includes a tower body, and four tower legs 2 are provided at the lower end of the tower body. Each tower leg 2 has a tower foot plate 3 installed at its bottom. The tower foot plate 3 is fixed to the main foundation column 4 by anchor bolts 5. The adjustment device 7 of this utility model is installed between the tower foot plate 3 and the main foundation column 4.

[0046] The adjusting device 7 is welded from a cross steel plate 9, a top plate 10, and a bottom plate 11. The cross steel plate 9 is fixed between the top plate 10 and the bottom plate 11, which are parallel. The bottom plate 11 has two slots 13, the positions of which correspond to the positions of the anchor bolts 5 installed on the main foundation column 4. The vertical plate of the cross steel plate 9 above the slots 13 has two slots 14, which are perpendicular to the slots 13 and are connected to each other. The top plate 10 has four strip holes 12, which are used to fix the tower foot plate 3 to the top plate 10. The straight line of the long strip of the four slots 12 is perpendicular to the straight line of the slots 13.

[0047] A sealing plate 15 is provided at the end of the slot 13. Bolt holes 16 are provided on both the bottom plate 11 and the sealing plate 15. Bolts are used to connect the bottom plate 11 and the sealing plate 15 together through the bolt holes 16.

[0048] The width of the base plate 11 is greater than the width of the tower leg plate 3. The slot 13 opened on the base plate 11 is reserved for horizontal adjustment length, which allows the tower leg 2 to be horizontally displaced along the direction of the slot 13, thereby realizing the first horizontal displacement adjustment.

[0049] The width of the top plate 10 is also greater than the width of the tower leg plate 3. The strip hole 12 on the top plate 10 is perpendicular to the direction of the slot 13, which allows the tower leg 2 to be horizontally adjusted along the direction of the strip hole 12, thereby realizing the second horizontal displacement adjustment.

[0050] The height of the second groove 14 on the cross steel plate 9 is the exposed height H+10mm of the anchor bolt 5. The length of the first groove 13 on the bottom plate 11 is determined according to the design adjustment of the horizontal displacement value. The opening length of the strip hole 12 on the top plate 10 is determined according to the design adjustment of the longitudinal horizontal displacement value.

[0051] The base plate 11 of the adjusting device 7 and the vertical plate of the cross steel plate 9 connected thereto are slotted, so that the exposed anchor bolts 5 can pass through the slots, thereby allowing the adjusting device 7 to be pushed horizontally between the tower leg plate 3 and the foundation main column 4. After slotting, the tower leg 2 does not need to be raised excessively due to the exposed height of the anchor bolts 5.

[0052] The exposed height of the anchor bolts 5 pre-embedded in the main column 4 is generally 280mm-440mm. Conventional adjustment devices require raising the tower leg 2 an additional 300mm-500mm. Due to the self-weight of the conductors on the tower, the self-weight of the tower, and the rigidity of the tower itself, excessive raising of the tower leg 2 is very difficult. Using a flat-push type can effectively solve the problem of difficulty in raising it additionally.

[0053] A connecting bolt 8 is installed between the top plate 10 of the adjusting device 7 and the tower foot plate 3, creating a dynamically adjustable space between the adjusting device 7 and the tower foot plate 3. This adjustment can be made to any size using the connecting nuts 6 on the upper and lower parts of the tower foot plate 3. Thus, according to the design of the uneven vertical settlement height of the tower foundation, the adjusting device 7 can be horizontally pushed between the tower foot plate 3 and the main foundation column 4 to adjust the uneven vertical settlement of the tower foundation.

[0054] This application provides two embodiments, both of which have the same overall structure. The only difference is that the length of the base plate 11 is different in Embodiment 1 and Embodiment 2. The following description is based on the accompanying drawings. Example

[0055] like Figure 1 As shown, the top plate 10 is made of square steel plate and the bottom plate 11 is made of rectangular steel plate. The widths of the two are the same, and the length of the bottom plate 11 is greater than its width. The slot 13 is opened in the length direction of the bottom plate 11. Example

[0056] like Figure 2-6 As shown, the top plate 10 and the bottom plate 11 are made of square steel plates of the same width.

[0057] The lower end of the tower body has four tower legs 2, each with a foundation. When the tower is located in a coal mine goaf, the four tower foundations will experience uneven settlement and horizontal displacement. To prevent the tower from deforming or collapsing, it is necessary to adjust the uneven settlement and horizontal displacement of the four tower foundations to bring the four tower legs to the same height and adjust the horizontal spacing between the four tower legs to the original design dimensions. The adjustment steps using the adjustment device 7 of this utility model are as follows:

[0058] Step 1: Measure the uneven settlement and horizontal displacement of the tower foundation caused by the coal mine goaf, and determine the adjustment plan.

[0059] Step 2: For tower legs 2 with a foundation settlement height of less than 150mm, a steel plate 17 is installed between the foundation main column 4 and the tower foot plate 3 to adjust the height of tower legs 2.

[0060] Step 3: When the foundation settlement height is large, install a horizontally sliding adjustment device 7 between the tower foot plate 3 and the foundation main column 4. The adjustment device 7 is horizontally pushed into the space between the tower foot plate 3 and the foundation main column 4 to avoid excessively raising the H height and facilitate implementation.

[0061] Step 4: Connect the lower end of the adjusting device 7 to the foundation using anchor bolts 5, and fix the sealing plate 15 to the base plate 11 of the adjusting device 7 using bolt holes 16.

[0062] Step 5: Fix and connect the tower leg plate 3 and the top plate 10 of the adjusting device 7 by connecting bolts 8 and nuts 6, thereby connecting the adjusting device 7 and the tower leg 2 together.

[0063] Step 6: Adjust the horizontal displacement and vertical settlement in real time according to the subsequent deformation of the goaf. When horizontal displacement occurs, it is adjusted through the strip hole 12 on the top plate 10; when vertical displacement occurs, it is adjusted through the groove 13 on the bottom plate 11; when vertical settlement occurs, it is adjusted to any size by adjusting the connecting bolt 8 and nut 6.

[0064] Finally, through three-way adjustment, the system corrects and restores the tower in the event of simultaneous vertical settlement and bidirectional horizontal displacement of the foundation, ensuring the tower's safety. This device has a simple structure, is easy to manufacture and operate, allows for convenient dynamic adjustment in the later stages, has a short implementation period, facilitates emergency repairs, and significantly reduces project investment compared to relocation or other alternative solutions.

[0065] Regarding the specific structure of this utility model, it should be noted that the connection relationships between the various component modules adopted in this utility model are definite and achievable. Except as specifically described in the embodiments, their specific connection relationships can bring about corresponding technical effects and solve the technical problems proposed by this utility model without relying on the execution of corresponding software programs. The models of the components, modules, and specific components appearing in this utility model, the connection methods between them, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, unless specifically described, are all publicly disclosed content in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by those skilled in the art before the application date, or belong to conventional technology, common knowledge, and other existing technologies in this field. There is no need to elaborate, which makes the technical solution provided in this case clear, complete, and achievable, and can reproduce or obtain corresponding physical products based on this technical means.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A three-dimensional adjustment device for uneven settlement of transmission line tower foundation, installed between the tower foot plate (3) and the foundation main column (4), characterized in that: The adjustment device is welded from a top plate (10), a cross steel plate (9) and a bottom plate (11). Two slots (13) are provided on the bottom plate (11). The positions of the two slots (13) correspond to the positions of the anchor bolts (5) installed on the main column (4) of the foundation. Two slots (14) are provided on the vertical plate of the cross steel plate (9) above the slots (13). The slots (14) are perpendicular to the slots (13) and the connection between the slots (14) and the slots (13) is through. Four strip holes (12) are provided on the top plate (10). The tower foot plate (3) is fixedly connected to the top plate (10) by connecting bolts (8) and nuts (6) on the four strip holes (12). The straight line of the long strip of the four strip holes (12) is perpendicular to the straight line of the slot (13).

2. The three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 1, characterized in that: The height of slot 2 (14) is greater than the exposed height of anchor bolt (5).

3. The three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 1, characterized in that: The top plate (10) and the bottom plate (11) are parallel to each other.

4. The three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 1, characterized in that: The widths of the top plate (10) and the bottom plate (11) are both greater than the width of the tower foot plate (3).

5. A three-dimensional adjustment device for uneven settlement of transmission line tower foundation as described in any one of claims 1-4, characterized in that: A sealing plate (15) is also provided on the bottom plate (11) at the end of the first groove (13). Bolt holes (16) are provided on both the sealing plate (15) and the bottom plates (11) on both sides of the first groove (13). Bolts pass through the bolt holes (16) to fix the bottom plate (11) and the sealing plate (15) together.

6. The three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 5, characterized in that: The top plate (10) and the bottom plate (11) are made of steel plates of the same width.

7. A three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 5, characterized in that: The top plate (10) is made of square steel plate and the bottom plate (11) is made of rectangular steel plate. The widths of the two are the same. The length of the bottom plate (11) is greater than its width. The first groove (13) is opened in the length direction of the bottom plate (11).

8. A three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 1, characterized in that: The connecting bolts (8) pass through the strip holes (12) on the tower foot plate (3) and the top plate (10). Nuts (6) are installed on the connecting bolts (8) above and below the tower foot plate (3) and on the connecting bolts (8) above and below the top plate (10).

9. A three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 8, characterized in that: Four strip holes (12) are arranged in a square array.

10. A three-way adjustment device for uneven settlement of transmission line tower foundation as described in claim 1, characterized in that: The opening length of slot one (13) is a through slot opened from one side of the base plate (11) until it passes the intersection of slot two (14) and the base plate (11) and extends forward a certain distance.

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