Anti-settling concrete pole base

Abstract

The utility model discloses a kind of anti-settling concrete electric pole chassis, more specifically to electric pole chassis technical field, including base, support assembly is arranged on the base, the support assembly includes the rotary table being arranged at the top of base, the bottom end of the rotary table is provided with screw rod, the bottom end of the screw rod is through base and extends to the bottom of base.The utility model is by base and the pre-embedded rod of radial distribution, pre-embedded plate constitutes multipoint support system, pre-embedded rod is embedded in deep layer of soil, pre-embedded plate greatly increases the contact area and the occlusal force with soil, the vertical load of electric pole is dispersed to deep stable soil layer, effectively resist soil compression deformation and creep settlement, solve the pain point that traditional chassis only relies on surface soil support and is easy to sink, especially adapt to soft soil, backfill soil and other low bearing capacity stratum.

Description

Technical Field

[0001] This utility model relates to the field of pole chassis technology, and more specifically, to a concrete pole chassis for preventing settlement. Background Technology

[0002] Concrete pole bases, as core foundation components of power / communication line engineering, play a crucial role in fixing the pole's base and distributing vertical loads, serving as the underground support core to ensure the long-term stable operation of the line. They are typically precast reinforced concrete (high-strength concrete or composite materials are used in special scenarios), and are mainly square / circular flat plates, some with a central groove to restrict horizontal slippage. Internally, they are reinforced with a steel mesh to meet compressive and flexural strength requirements.

[0003] In practical engineering applications, many power lines need to traverse low-bearing-capacity strata (soil bearing capacity ≤120kPa) such as soft soil areas, backfilled soil areas, and wetlands. The core design of traditional power pole chassis is limited to "increasing the contact area with the soil" to distribute the load, without designing targeted anti-settlement structures to address the compression characteristics, humidity sensitivity, and freeze-thaw damage of low-bearing-capacity soils. This results in significant limitations: on the one hand, when subjected to the vertical load of the pole for a long time, the soil is prone to creep settlement, directly causing the chassis to sink; on the other hand, external factors such as insufficient compaction of backfill soil, soil softening due to rainwater soaking, and freeze-thaw cycles caused by seasonal changes that damage the foundation structure will further exacerbate chassis settlement and displacement. These problems not only lead to pole tilting and line tension imbalance, but in severe cases, they can also cause safety accidents such as line short circuits and tower collapses, while increasing the frequency and cost of later maintenance, posing a great threat to the safe and stable operation of power / communication lines. Therefore, there is an urgent need for a concrete pole chassis that combines anti-settlement and anti-slip capabilities and is adaptable to complex geological conditions. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a concrete pole base for preventing settlement, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a concrete pole base for preventing settlement, including a base, on which a support component is provided; The support assembly includes a turntable disposed on the top of the base, and a lead screw disposed at the bottom end of the turntable, the bottom end of the lead screw passing through the base and extending to the bottom of the base; The lead screw is provided with a first connecting plate and a second connecting plate on its outer side. The outer side of the first connecting plate and the second connecting plate is provided with a number of angle-adjustable embedded plates, and each of the embedded rods is provided with a number of embedded plates.

[0006] Optionally, in one possible implementation, both the first connecting plate and the second connecting plate are sleeved on the outside of the lead screw. The second connecting plate is threadedly connected to the lead screw, and the first connecting plate is movably connected to the lead screw. A plurality of first hinge seats are fixedly provided on the outside of the first connecting plate, and a plurality of second hinge seats are fixedly provided on the outside of the second connecting plate. The top end of the embedded rod extends to the first hinge seat and is hinged to the first hinge seat, for the embedded rod to rotate along the axis point at the connection between the embedded rod and the first hinge seat. Two traction rods are hinged to the outside of the second hinge seat, and one end of the traction rod extends to the embedded rod and is hinged to the embedded rod. Optionally, in one possible implementation, the turntable and the base are stacked, the turntable is rotatably connected to the base, the first connecting plate is installed on the bottom of the base by bolts, the first connecting plate and the second connecting plate are stacked, the shape of the first connecting plate and the embedded rod can be combined into a triangle, and the embedded plate is welded to the embedded rod. The technical effects and advantages of this utility model are as follows: The base and radially distributed embedded rods and plates form a multi-point support system. The embedded rods are embedded deep in the soil, and the embedded plates greatly increase the contact area and interlocking force with the soil, dispersing the vertical load of the pole to the deep stable soil layer. This effectively resists soil compression deformation and creep settlement, solving the problem that traditional chassis rely only on the surface soil for support and are prone to sinking. It is especially suitable for low bearing capacity strata such as soft soil and backfill soil. The embedded pole, traction pole, first connecting plate, and second connecting plate form a triangular stable structure. Utilizing the non-deformable mechanical properties of a triangle, the horizontal anti-slip capability of the chassis is significantly improved, preventing pole displacement due to lateral soil deformation. At the same time, the pull-out resistance of the embedded components is enhanced, which can effectively resist chassis floating or displacement caused by factors such as rainstorm erosion and soil loosening, ensuring the overall stability of the pole. Rotating the turntable drives the lead screw to rotate, causing the second connecting plate to move axially. This, in turn, allows for adjustment of the angle between the embedded rod and the vertical direction via the traction rod, dynamically optimizing the embedding depth and support angle. To address settlement trends caused by soil creep and softening from rainwater, the turntable can be fine-tuned to increase the normal pressure between the embedded rod and the soil, enhancing friction and interlocking force to counteract settlement. For soils with varying bearing capacities, the angle of the embedded rod can be flexibly adjusted to adapt to diverse geological conditions, eliminating the need for secondary excavation and offering convenient and efficient operation. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0008] Figure 1 This is a front view of the overall structure of this utility model.

[0009] Figure 2 This is a side view of the overall structure of this utility model.

[0010] Figure 3 This is a schematic diagram of the base, turntable, and lead screw of this utility model.

[0011] Figure 4 This is a schematic diagram showing the first connecting plate, the first hinge seat, the second connecting plate, the second hinge seat, the embedded plate, and the embedded rod of this utility model installed together.

[0012] Figure 5 This is a schematic diagram of the first connecting plate, the second connecting plate, the first hinge seat, the second hinge seat, the embedded rod, the embedded plate, and the traction rod of this utility model.

[0013] The attached diagram is labeled as follows: 1. Base; 2. Turntable; 3. Lead screw; 4. First connecting plate; 5. Second connecting plate; 6. First hinge seat; 7. Second hinge seat; 8. Embedded rod; 9. Embedded plate; 10. Traction rod. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Example 1 This embodiment discloses a concrete pole base for preventing settlement, which aims to solve the technical problem that traditional concrete pole bases in low-bearing-capacity strata such as soft soil areas and backfill soil areas are prone to settlement due to soil creep, softening or freeze-thaw cycles after long-term loading because they only increase the contact area to disperse the load and lack targeted anti-settlement structures. In this embodiment, the base 1 is prefabricated from C30 high-strength reinforced concrete, with a flat surface and a double-layer, bidirectional HRB400 grade steel mesh inside to ensure sufficient compressive and flexural strength. (See attached...) Figure 3 As shown, a circular groove is provided at the center of the upper surface of the base 1, and an annular bearing is embedded in the groove to cooperate with the rotation of the lead screw 3.

[0016] Turntable 2 is made of Q235B steel plate. An annular boss is welded to the center of its lower surface. The boss matches the circular groove on the upper surface of the base 1, and the boss is interference-fitted with the inner ring of the bearing to ensure that turntable 2 can rotate flexibly relative to the base 1. The top of the lead screw 3 is fixedly connected to the center of the lower surface of turntable 2 by full welding to ensure the connection strength. The outer side of the lead screw 3 is threaded for mating with the second connecting plate 5. The bottom end of the lead screw 3 passes through the bearing hole of the base 1 and extends to the bottom of the base 1. The bottom end can be machined into a hemispherical shape to reduce the initial contact resistance with the soil.

[0017] Both the first connecting plate 4 and the second connecting plate 5 are made of Q235B steel plate by stamping, and each has a through hole in the center for mounting the lead screw 3. The through hole of the first connecting plate 4 is a smooth hole, which corresponds to the pre-set bolt hole at the bottom of the base 1 and is fixed to the lower surface of the base 1 by bolts. The through hole of the second connecting plate 5 is machined with an internal thread that matches the lead screw 3, and is fitted onto the outside of the lead screw 3 through thread engagement, and can move up and down along the axial direction of the lead screw 3.

[0018] Both the first hinge seat 6 and the second hinge seat 7 are forged from Q235 steel. The first hinge seat 6 is welded to the outer edge of the first connecting plate 4 by fillet weld. The welding position of the second hinge seat 7 is aligned vertically with the first hinge seat 6, and the welding parameters are the same as those of the first hinge seat 6, to ensure that the force transmission in the vertical direction is maintained when the traction rod 10 is subjected to force.

[0019] The embedded rod 8 is made of Q235B round steel, with the top end machined into a flat shape and equipped with a hinge hole that matches the hinge hole of the first hinge seat 6. It is hinged to the first hinge seat 6 via a steel pin, with cotter pins at both ends to prevent it from falling off and ensure that the embedded rod 8 can rotate flexibly around the pin axis. The embedded plate 9 is cut from Q235B steel plate, and several embedded plates 9 are welded onto each embedded rod 8. The embedded plates 9 are perpendicular to the axis of the embedded rod 8 to ensure that the connection between the embedded plates 9 and the embedded rod 8 is firm and not easy to fall off.

[0020] Example 2 Based on Example 1, this example discloses a concrete pole chassis for preventing settlement. The traction rod 10 is made of Q235B round steel, with both ends machined into a flat shape and provided with hinge holes. Each embedded pole 8 corresponds to two traction rods 10, symmetrically distributed on both sides of the embedded pole 8. One end of the traction rod 10 is hinged to the hinge hole of the second hinge seat 7 through a steel pin, and the other end is hinged to the middle position of the embedded pole 8 through a pin of the same specification. Both ends of the pin are also fixed with cotter pins to ensure that the hinge of the traction rod 10 does not jam during the stress process. The specific working principle is as follows: the prefabricated base 1 is hoisted to the center of the foundation pit, the level of the base 1 is adjusted by a level, and then temporary supports are symmetrically arranged around the base 1 to prevent the base 1 from shifting.

[0021] Pass the top of the lead screw 3 through the bearing hole on the base 1, aligning the top of the lead screw 3 with the center of the lower surface of the turntable 2, and fix it by full welding using manual arc welding; embed the annular boss on the lower surface of the turntable 2 into the circular groove of the base 1 to ensure that the turntable 2 rotates smoothly.

[0022] The first connecting plate 4 is fitted onto the outside of the lead screw 3, aligned with the preset bolt holes on the lower surface of the base 1, and bolts are inserted. The second connecting plate 5 is fitted onto the outside of the lead screw 3 through thread engagement, and its initial position is adjusted to be close to the first connecting plate 4.

[0023] The top ends of each pre-embedded rod 8 are respectively hinged to each of the first hinge seats 6 of the first connecting plate 4 by means of pins, and fixed by inserting cotter pins; one end of each traction rod 10 is respectively hinged to each of the second hinge seats 7 of the second connecting plate 5, and the other end is hinged to the middle position of the corresponding pre-embedded rod 8, and fixed by inserting cotter pins in the same way.

[0024] Turning the turntable 2 with a wrench causes the lead screw 3 to rotate synchronously. Since the second connecting plate 5 is threadedly connected to the lead screw 3, when the lead screw 3 rotates, the second connecting plate 5 moves upward along the axis of the lead screw 3. The traction rod 10 pulls the embedded rod 8 to rotate around the pin of the first hinge seat 6. The angle between the embedded rod 8 and the vertical direction can be adjusted to 30° in soft soil areas, which can be adjusted to 45°. At this time, each embedded rod 8 is evenly distributed radially.

[0025] The soil excavated from the original foundation pit was used for backfilling in layers, each 200mm thick. A small compactor was used to compact the soil. During backfilling, collisions with the embedded poles 8 and 9 were avoided to prevent displacement of the embedded components. The backfill was continued until it was flush with the upper surface of the base 1. The bottom of the concrete pole was then placed into the central groove on the upper surface of the base 1, and subsequently secured with guy wires to complete the overall installation.

[0026] The vertical load of the pole is transferred to the base 1 through the bottom of the pole. The base 1 evenly distributes the load to the foundation below. At the same time, the radially distributed embedded poles 8 are embedded deep into the soil. The embedded plate 9 increases the contact area and interlocking force with the soil, forming a multi-point support system of base 1 + embedded poles 8 and embedded plate 9, which effectively resists the compression deformation of the soil and avoids the overall settlement of the chassis. The embedded poles 8, traction rods 10 and connecting plates form a triangular stable structure. The stability of the triangle enhances the pull-out resistance and horizontal anti-slip resistance of the embedded components, preventing the chassis from shifting due to lateral deformation of the soil.

[0027] During long-term use, if the soil undergoes creep settlement or softening due to rainwater soaking, causing the chassis to tend to settle, the turntable 2 can be rotated to drive the lead screw 3 to rotate, causing the second connecting plate 5 to move upward along the axis of the lead screw 3. The traction rod 10 generates an upward pulling force on the embedded rod 8, further increasing the normal pressure between the embedded rod 8 and the soil, enhancing the friction and interlocking force of the soil on the embedded rod 8, and counteracting the settlement trend. If the soil bearing capacity is low, the angle of the embedded rod 8 can be increased to 45° by adjusting the turntable 2, increasing the embedding depth of the embedded rod 8, further enhancing the anti-settlement ability, and realizing dynamic adjustment according to soil conditions.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A concrete pole base for preventing settlement, comprising a base (1), characterized in that: A support assembly is provided on the base (1); The support assembly includes a turntable (2) disposed on the top of the base (1), and a lead screw (3) is disposed at the bottom end of the turntable (2). The bottom end of the lead screw (3) passes through the base (1) and extends to the bottom of the base (1). The lead screw (3) is provided with a first connecting plate (4) and a second connecting plate (5) on its outer side. The first connecting plate (4) and the second connecting plate (5) are respectively provided with a number of angle-adjustable embedded rods (8), and each of the embedded rods (8) is provided with a number of embedded plates (9).

2. The anti-settlement concrete pole base according to claim 1, characterized in that: The first connecting plate (4) and the second connecting plate (5) are both sleeved on the outside of the lead screw (3). The second connecting plate (5) is threadedly connected to the lead screw (3), and the first connecting plate (4) is movably connected to the lead screw (3).

3. The anti-settlement concrete pole base according to claim 1, characterized in that: The outer side of the first connecting plate (4) is fixedly provided with a plurality of first hinge seats (6), and the outer side of the second connecting plate (5) is fixedly provided with a plurality of second hinge seats (7).

4. The anti-settlement concrete pole base according to claim 3, characterized in that: The top end of the pre-embedded rod (8) extends to the first hinge seat (6) and is hinged to the first hinge seat (6), so that the pre-embedded rod (8) can rotate along the axis point at the connection between the pre-embedded rod (8) and the first hinge seat (6).

5. A concrete pole base for preventing settlement according to claim 3, characterized in that: The second hinge seat (7) has two traction rods (10) hinged on its outer side. One end of the traction rod (10) extends to the embedded rod (8) and is hinged to the embedded rod (8).

6. The anti-settlement concrete pole base according to claim 1, characterized in that: The turntable (2) and the base (1) are stacked on top of each other, and the turntable (2) is rotatably connected to the base (1).

7. The anti-settlement concrete pole base according to claim 1, characterized in that: The first connecting plate (4) is installed on the bottom of the base (1) by bolts, and the first connecting plate (4) and the second connecting plate (5) are stacked.

8. The anti-settlement concrete pole base according to claim 1, characterized in that: The shapes of the first connecting plate (4) and the embedded rod (8) can be combined into a triangle, and the embedded plate (9) is welded onto the embedded rod (8).

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