Anti-freezing electric transmission line tower supporting foundation suitable for frozen earth area

Abstract

The invention discloses an anti-freezing power transmission line tower supporting foundation suitable for a frozen soil area, relates to the technical field of power transmission line tower supporting, and aims to solve the problem that an existing power transmission line tower supporting foundation cannot resist freezing and cannot keep supporting efficiency under season replacement. Comprising a pile foundation cylinder, a pile foundation cylinder inner supporting column, an arc-shaped heat conduction pipe and a frost heaving piercing mechanism. A pile foundation cylinder top seat and a power transmission line tower connecting frame are mounted at the top of the pile foundation cylinder; the pile foundation cylinder inner supporting column is embedded in the pile foundation cylinder, circulating flow channels are designed between the pile foundation cylinder inner supporting column and the pile foundation cylinder and between the pile foundation cylinder inner supporting column and the arc-shaped heat conduction pipe, and an equipment mounting inner cavity is formed in the top of the pile foundation cylinder inner supporting column. When the soil body is subjected to frost heaving, the transverse anchor rods can pierce into the surrounding soil body, so that the pile foundation cylinder and the surrounding soil body are anchored together, and the frost heaving is further resisted.

Description

Technical Field

[0001] The invention relates to the technical field of transmission line pole tower support, and in particular to a frost-proof transmission line pole tower support foundation suitable for frozen soil areas. Background Art

[0002] Frozen ground is also called frozen soil, tundra or tundra. In physical geography, it refers to an environment where trees cannot grow due to low temperatures and short growing seasons; in geology, it refers to various rocks and soils below 0°C that contain ice. It can generally be divided into short-term frozen ground, seasonal frozen ground and permafrost; frost heave refers to the situation in seasonal frozen ground or permafrost areas. In the cold season, when the soil freezes and expands, the support foundation of the transmission line tower fixed in the frozen ground is lifted up due to the tangential frost heave force and loses its fixing effect. When the warm season melts, the soil falls back, and the support foundation of the transmission line tower that has been pulled up is difficult to return to its original position, resulting in the phenomenon of pulling up, which makes the support of the transmission line tower fail, and in severe cases, it will cause the transmission line tower to collapse. Summary of the invention

[0003] In order to solve the problem that the existing transmission line pole tower support foundation cannot resist freezing and pull, and thus cannot maintain the supporting effect under the change of seasons, the present invention further provides a freezing and pull-resistant transmission line pole tower support foundation suitable for frozen soil areas to solve the problems raised in the above background technology.

[0004] The technical solution of the present invention is:

[0005] A frost-proof transmission line tower support foundation suitable for frozen soil areas, characterized in that it comprises a pile foundation cylinder, a pile foundation cylinder top seat, a pile foundation cylinder base, a transmission line tower connection frame, an internal support column of the pile foundation cylinder, an arc-shaped heat conducting pipe, a heating rod, a liquid circulation pump and a frost heave piercing mechanism, wherein the frost heave piercing mechanism is used to anchor the pile foundation cylinder to the frozen soil when frost heave occurs;

[0006] The top of the pile foundation cylinder is fixedly installed with the pile foundation cylinder top seat, the transmission line pole tower connection frame is fixedly installed on the pile foundation cylinder top seat, and the transmission line pole tower connection frame is used to connect with the bottom support foot of the transmission line pole tower body;

[0007] The internal support column of the pile foundation tube is embedded in the installation cavity inside the pile foundation tube, two vertical grooves are arranged on the cavity wall of the installation cavity of the pile foundation tube, a channel is opened at the lower end of the vertical groove, the vertical groove is connected with the channel, an arc-shaped heat-conducting pipe is arranged at the lower end of the pile foundation tube, and the vertical groove, the channel and the arc-shaped heat-conducting pipe are connected in sequence;

[0008] A liquid circulation pump is arranged in the pile foundation tube, and the water outlet and water return port of the liquid circulation pump are respectively connected with two vertical grooves, so that the water outlet of the liquid circulation pump, one of the vertical grooves, one of the channels, a plurality of groups of arc-shaped heat-conducting pipes, another channel, another vertical groove, and the water return port of the liquid circulation pump constitute a liquid circulation channel in sequence, and the liquid circulation channel is filled with oil; and a heating rod installation groove is also arranged on the outer wall of the supporting column inside the pile foundation tube, the heating rod installation groove corresponds to the position of the vertical groove, and a heating rod is embedded in the heating rod installation groove.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The antifreeze-proof transmission line tower support foundation of the present invention is simple to construct. During construction, a foundation hole is excavated, a threaded drill rod is installed, and then the foundation soil is backfilled. There is no need to excavate a large area in the original foundation and pour concrete (concrete often causes alkali in the construction area and affects the growth of surrounding vegetation). It is particularly suitable for nature reserves with frozen soil to avoid ecological damage.

[0011] 2. The anti-freezing and pulling-out transmission line pole tower support foundation of the present invention mainly comprises a pile foundation tube, an internal support column of the pile foundation tube, an arc-shaped heat-conducting pipe, a heating rod and a liquid circulation pump; a pile foundation tube top seat and a transmission line pole tower connecting frame are fixedly installed on the top of the pile foundation tube, and a pile foundation tube base is arranged at the bottom of the pile foundation tube for fixing in the foundation; the internal support column of the pile foundation tube is embedded in the pile foundation tube to ensure the supporting strength of the pile foundation tube; the present invention designs a circulation channel system between the internal support column of the pile foundation tube and the pile foundation tube and the arc-shaped heat-conducting pipe, and an equipment installation inner cavity is provided on the top of the internal support column of the pile foundation tube, and a liquid circulation pump is arranged in the equipment installation inner cavity, the liquid circulation pump is connected with the circulation channel, the liquid circulation channel is filled with oil, and a heating rod is arranged, so that under the action of the liquid circulation pump and the heating rod, the circulating heating of the oil can be realized, and the heat can be dissipated to the surrounding soil, so as to effectively increase the temperature of the surrounding soil and avoid excessive freezing and pulling effect caused by too low soil temperature.

[0012] 3. The present invention designs a frost heave piercing mechanism, and the frost heave force sensing base is used to sense the frost heave force of the soil body, and drives the sliding rod to move upward under the frost heave force. Before frost heave occurs, the bottom end of the sliding rod extends out of the bottom of the vertical pipe section of the L-shaped main pipe, and reserves a margin for upward movement. When backfilling the foundation soil, a movable soil retaining device can be used to leave a movement space between the frost heave force sensing base and the bottom of the vertical pipe section of the L-shaped main pipe. There is no backfill soil in this space, and it will not be affected by the downward frost heave force of the soil body. At the same time, the movable soil retaining device will not hinder the upward movement of the frost heave force sensing base. When backfilling and burying the pile foundation tube, the transverse anchor rod is inside the transverse pipe section of the L-shaped main pipe. After the backfilling and burying is completed, when the soil body frost heaves, under the action of frost heave, the sliding rod moves vertically upward, and then the transverse anchor rod is driven by the 90-degree bent rod to pierce the soil body laterally outward, so that the pile foundation tube is anchored together with the surrounding soil body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the installation of an anti-freezing transmission line tower support foundation suitable for frozen soil areas.

[0014] Figure 2 The present invention is a schematic diagram of the cross-section installation structure of the anti-freeze-pulling transmission line tower support foundation suitable for frozen soil areas.

[0015] Figure 3 for Figure 2 An enlarged schematic diagram of point A.

[0016] Figure 4 It is a schematic diagram of the structure of the pile foundation tube in the present invention.

[0017] Figure 5 It is a schematic structural diagram of the combined state of the pile foundation tube and the supporting columns inside the pile foundation tube in the present invention.

[0018] Figure 6 The figure is a schematic diagram of the internal structure of the anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas of the present invention.

[0019] Figure 7 It is an enlarged schematic diagram of the top structure of the anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas of the present invention.

[0020] Figure 8 It is a structural schematic diagram of the frost heave penetration mechanism in the present invention (the transverse anchor rod is in a contracted state).

[0021] Fig. 9 It is a structural schematic diagram of the frost heave piercing mechanism in the present invention (the transverse anchor rod is in the piercing state).

[0022] Fig.10It is another structural schematic diagram of the frost heave penetration mechanism in the present invention (the transverse anchor rod is in a contracted state).

[0023] Fig.11 It is another structural schematic diagram of the frost heave piercing mechanism in the present invention (the transverse anchor rod is in the piercing state).

[0024] In the figure: 0, foundation; 1, pile foundation tube; 11, installation cavity; 12, reduced diameter ladder; 13, first threading hole; 14, vertical groove; 15, expanded diameter wing plate; 151, groove; 152, installation hole; 2, pile foundation tube top seat; 3, pile foundation tube base; 31, threaded tube; 32, threaded drill rod; 33, protective cap; 34, third threading hole; 4, transmission line tower connection frame; 41, bottom plate; 42, half box body; 43, transmission line tower body; 5, pile foundation tube internal support column; 51, installation cavity; 52, second threading hole; 53, flow channel hole; 54, heating rod installation groove; 55, liquid circulation pump; 56, fourth threading hole; 6, Arc-shaped heat conducting pipe; 7. Temperature sensor; 8. Heating rod; 9. Frost heave penetration mechanism; 91. L-shaped main pipe; 92. Sliding rod; 921. Sliding guide; 922. Upper rod; 93. Transverse anchor rod; 931. Barb; 932. Sliding guide; 933. Connecting rod; 94. 90-degree bent rod; 941. Rotating shaft; 95. First sliding hinge joint; 96. Second sliding hinge joint; 97. Frost heave force sensing base; 971. Bottom plate; 972. Hemispherical structure; 98. Movable earth retaining device; 981. Top fixed cover; 982. First-stage sliding sleeve; 983. Second-stage sliding sleeve; 984. Third-stage sliding sleeve; 10. Foundation hole. DETAILED DESCRIPTION

[0025] Specific implementation method 1: See Figure 1-7 As shown, a frost-proof transmission line tower support foundation suitable for frozen soil areas includes a pile foundation tube 1, a pile foundation tube top seat 2, a pile foundation tube base 3, a transmission line tower connecting frame 4, an internal support column of the pile foundation tube 5, an arc-shaped heat conducting pipe 6 and a frost heave piercing mechanism 9. The frost heave piercing mechanism 9 is used to anchor the pile foundation tube 1 to the frozen soil when frost heave occurs.

[0026] Furthermore, the pile foundation tube 1 is installed in the foundation 0 (during construction, first, a foundation hole 10 is excavated in the foundation 0, and then the pile foundation tube 1 is installed into the foundation hole 10 and backfilled), the pile foundation tube top seat 2 is fixedly installed on the top of the pile foundation tube 1, and the transmission line pole tower connecting frame 4 is fixedly installed on the pile foundation tube top seat 2 through a bolt assembly, and the transmission line pole tower connecting frame 4 is used to connect with the bottom support legs of the transmission line pole tower body (that is, each bottom support leg of the transmission line pole tower body is respectively connected to the transmission line pole tower base with a frost heave penetration mechanism of the present invention).

[0027] For further information, see Appendix Figure 3 A pile foundation tube base 3 is arranged at the bottom of the pile foundation tube 1. The pile foundation tube base 3 is preferably in an inverted cone shape. The inverted cone-shaped pile foundation tube base 3 can make the foundation soil inside the pile foundation hole produce a downward compression effect on it; and a plurality of threaded drill rod assemblies are arranged on the pile foundation tube base 3. Specifically, the threaded drill rod assembly includes a threaded tube 31, a threaded drill rod 32 and a protective cap 33. The threaded tube 31 is fixedly arranged on the pile foundation tube base 3. The threaded drill rod 32 is installed in the threaded tube 31 through a thread. The threaded drill rod 32 is used to drill into the foundation, so that the stability of the pile foundation tube is better. The protective cap 33 is installed on the top of the threaded drill rod 31.

[0028] Specific implementation method 2: See Figure 4 As shown, the pile foundation tube 1 of this embodiment has a hollow installation cavity 11 inside, which is used to install the internal support column 5 of the pile foundation tube. In addition, a first threading hole 13 that penetrates vertically is arranged inside the reduced diameter step of the pile foundation tube 1, which is used for threading the temperature sensor 7. The arrangement of the temperature sensor 7 will be described in detail later; two vertical grooves 14 are symmetrically arranged on the cavity wall of the installation cavity 11 of the pile foundation tube 1, and two expanded diameter wing plates 15 are symmetrically arranged on the lower wall of the pile foundation tube 1. The two expanded diameter wing plates 15 correspond to the lower positions of the two vertical grooves 14 respectively, and an inclined groove 151 is arranged in each expanded diameter wing plate 15, the top of the groove 151 is connected to the bottom of the vertical groove 14, and a plurality of groups of installation holes 152 connected to the groove 151 are symmetrically arranged on the front and back sides of each expanded diameter wing plate 15, and the arc-shaped heat-conducting pipe 6 is installed on the front and back sides of the two expanded diameter wing plates 15 through the installation holes 152 (see attached Figure 3 ), so that the grooves 151 inside the two expanded-diameter wing plates 15 are connected to the arc-shaped heat-conducting pipe 6.

[0029] Specific implementation method three: see Figure 5-7 As shown, the internal support column 5 of the pile foundation tube of this embodiment is embedded in the installation cavity 11 inside the pile foundation tube 1 and is in close contact with it. The internal support column 5 of the pile foundation tube plays a role of stable support for the entire pile foundation; the top of the internal support column 5 of the pile foundation tube has a section of equipment installation cavity 51 for installing a circulating pump and a controller; the axis of the internal support column 5 of the pile foundation tube is also provided with a second threading hole 52, and the bottom end of the second threading hole 52 is communicated with the first threading hole 13 at the bottom of the pile foundation tube 1. In addition, a third threading hole 34 is also provided at the axis of the pile foundation tube base 3, and the top of the third threading hole 34 is communicated with the bottom of the first threading hole 13. A temperature sensor 7 is embedded at the bottom of the pile foundation tube base 3, and then the cable of the temperature sensor 7 can be sequentially led through the third threading hole 34, the first threading hole 13 and the second threading hole 52 to the equipment installation cavity 51 at the top of the internal support column 5 of the pile foundation tube to connect with the controller;

[0030] Specific implementation method four: see Figure 5-7 As shown, in this embodiment, two flow channel holes 53 corresponding to the vertical grooves 14 are symmetrically arranged on the wall of the equipment installation inner cavity 51 of the support column 5 inside the pile foundation tube. When the support column 5 inside the pile foundation tube is embedded in the pile foundation tube 1, the vertical groove 14 forms a liquid flow channel, and then the two flow channel holes 53 are respectively connected to the two vertical grooves 14 (i.e., liquid flow channels) in a one-to-one correspondence; a liquid circulation pump 55 is arranged in the equipment installation inner cavity 51, and the water outlet of the liquid circulation pump 55 is connected to one of the flow channel holes 53, and the water return port of the liquid circulation pump 55 is connected to the other flow channel hole 53. The channel holes 53 are connected, so that the outlet of the liquid circulation pump 55, one of the flow channel holes 53, one of the vertical grooves 14, one of the grooves 151, multiple groups of arc-shaped heat-conducting pipes 6, another groove 151, another vertical groove 14, another flow channel hole 53 to the return port of the liquid circulation pump 55 form a liquid circulation channel in sequence, and the liquid circulation channel is filled with oil, so that under the action of the liquid circulation pump 55, the circulation of the oil can be achieved; and a heating rod installation groove 54 is also provided on the outer wall of the support column 5 inside the pile foundation tube (see attached Figure 5 ), the number of the heating rod installation grooves 54 is preferably two, corresponding to the position of the vertical groove 14, and a heating rod 8 is embedded in the heating rod installation groove 54 (see attached Figure 7 ), the heating rod 8 heats the oil flowing through the vertical groove 14, so that under the action of the liquid circulation pump 55 and the heating rod, the oil can be circulated and heated, and the heat can be dissipated to the surrounding soil, effectively raising the temperature of the surrounding soil, and avoiding excessive freezing and pulling effects due to low temperature. Furthermore, a controller is also provided in the equipment installation cavity 51, and the temperature sensor 7, the heating rod 8 and the liquid circulation pump 55 are all electrically connected to the controller, and the controller automatically controls the heating rod 8 and the liquid circulation pump 55 to perform circulatory heating according to the detection data of the temperature sensor 7.

[0031] Specific implementation method five: see Figure 4-6 As shown, in this embodiment, a transverse fourth threading hole 56 is further provided at the position of the heating rod installation groove 54 of the support column 5 inside the pile foundation tube, and the fourth threading hole 56 is connected with the second threading hole 52, so that the cable of the heating rod 8 can be led into the equipment installation inner cavity 51 through the fourth threading hole 56 and the second threading hole 52. Necessary sealing is provided between the cable of the heating rod 8 and the fourth threading hole 56 to prevent oil from penetrating the fourth threading hole 56.

[0032] Specific implementation method six: see Figure 4-7As shown, the pile foundation cylinder top seat 2 of this embodiment should be fixed (welded) on the cylinder wall of the pile foundation cylinder 1 below the equipment installation cavity 51, so that the internal support column 5 of the pile foundation cylinder can ensure good support strength for the pile foundation cylinder 1 (since the equipment installation cavity 51 is a large cavity structure, the strength here is weaker). More specifically, the transmission line tower connection frame 4 includes a bottom plate 41 and a half box body 42, the half box body 42 is fixedly welded on the bottom plate 41, the bottom plate 41 is connected to the pile foundation cylinder top seat 2 by a bolt assembly, and the half box body 42 is used to connect with the transmission line tower body 43, and the bottom plate 41 should also be located on the cylinder wall of the pile foundation cylinder 1 below the equipment installation cavity 51, and the equipment installation cavity 51 part can be accommodated inside the half box body 42.

[0033] Specific implementation method seven: See Figure 6-11 As shown, the frost heave piercing mechanism 9 of this embodiment is fixedly installed on the expanded diameter wing plate 15 of the pile foundation tube 1, and the frost heave piercing mechanism 9 includes: an L-shaped main pipe 91, a sliding rod 92, a transverse anchor rod 93, a 90-degree bent rod 94, a first sliding hinge joint 95, a second sliding hinge joint 96, a frost heave force sensing base 97 and a movable retaining device 98, wherein the L-shaped main pipe 91 is fixedly installed (welded) on the expanded diameter wing plate 15 of the pile foundation tube 1, and the L-shaped main pipe 91 includes a transverse pipe section and a vertical pipe section at the top. Preferably, since the main pipe 91 of the frost heave piercing mechanism 9 is L-shaped, a transverse retaining arm 153 is provided on the expanded diameter wing plate 15 of the pile foundation tube 1 (see attached Figure 3), so that the transverse pipe section at the top of the L-shaped main pipe 91 is fixedly welded on the transverse retaining arm 153 to ensure the stability of the L-shaped main pipe 91; the sliding rod 92 is vertically slidably installed in the vertical pipe section of the L-shaped main pipe 91, and the middle part of the sliding rod 92 has a sliding guide part 921 to ensure that the sliding rod 92 can move stably vertically in the vertical pipe section of the L-shaped main pipe 91; the transverse anchor rod 93 is slidably installed in the transverse pipe section of the L-shaped main pipe 91, and the front end of the transverse anchor rod 93 is a pointed structure, which is convenient for piercing the soil outward, and the transverse anchor rod 93 is also provided with a barb 931, which is convenient for stabilizing in the soil after piercing the soil, and the tail of the transverse anchor rod 93 is provided with a sliding guide 932 to ensure that the transverse anchor rod 93 can move stably in the transverse direction in the transverse pipe section of the L-shaped main pipe 91; the 90-degree bent rod 94 The middle part is installed at the inner bending part of the L-shaped main pipe 91 through the rotating shaft 941, and the top end of the sliding rod 92 is connected to one of the rod sections of the 90-degree bent rod 94 through the first sliding hinge joint 95 (that is, the first sliding hinge joint 95 is slidably installed on one of the rod sections of the 90-degree bent rod 94, and at the same time, the first sliding hinge joint 95 is also hinged to the top end of the sliding rod 92), and the tail end of the transverse anchor rod 93 is provided with a connecting rod 933, and the connecting rod 933 at the tail end of the transverse anchor rod 93 is connected to another rod section of the 90-degree bent rod 94 through the second sliding hinge joint 96 (that is, the second sliding hinge joint 96 is slidably installed on another rod section of the 90-degree bent rod 94, and at the same time, the second sliding hinge joint 96 is also hinged to the tail end of the connecting rod 933 at the tail end of the transverse anchor rod 93).

[0034] Furthermore, through the above structure, when the sliding rod 92 moves vertically, it will drive the transverse anchor rod 93 to move horizontally through the 90-degree bent rod 94. The function to be achieved by the present invention is that when the pile foundation tube 1 is backfilled and buried, the transverse anchor rod 93 is inside the transverse pipe section of the L-shaped main pipe 91. After the backfilling and burying is completed, when the soil body freezes and heaves, under the action of the freeze heave, the sliding rod 92 can move vertically upward, and then drive the transverse anchor rod 93 to penetrate the soil body laterally outward, so that the pile foundation tube 1 and the surrounding soil body are more stably anchored together, thereby effectively playing an anti-freeze pullout role. Therefore, the present invention provides a frost heave force sensing base 97 at the bottom end of the sliding rod 92, and a movable soil retaining device 98 is provided between the frost heave force sensing base 97 and the vertical pipe section of the L-shaped main pipe 91. Specifically, the frost heave force sensing base 97 is used to sense the frost heave force of the soil body, and drive the sliding rod 92 to move upward under the frost heave force. Before frost heave occurs, the bottom end of the sliding rod 92 should extend out of the bottom of the vertical pipe section of the L-shaped main pipe 91 to reserve a movable margin for upward movement, and the area of ​​the frost heave force sensing base 97 should be large enough to be larger than the horizontal area of ​​the vertical pipe section of the L-shaped main pipe 91. Cross-sectional area, in order to fully receive the effect of frost heave force, the frost heave force sensing base 97 of the present invention includes a circular bottom plate 971, and a hemispherical structure 972 is designed on the bottom surface of the bottom plate 971, which helps it to fully receive the frost heave force of the surrounding soil body, and convert the frost heave force into a vertical upward force, thereby pushing the sliding rod 92 to move upward; the function of the movable soil retaining device 98 is to avoid the frost heave force sensing base 97 from being subjected to the downward frost heave force of the soil body as much as possible, that is, to ensure that when frost heave occurs, the frost heave force sensing base 97 is only subjected to the upward frost heave force. Through the movable soil retaining device 98, when backfilling the base soil, a movement space can be left between the frost heave force sensing base 97 and the bottom of the vertical pipe section of the L-shaped main pipe 91, and this space has no backfill soil and will not be subjected to the downward frost heave force of the soil body. At the same time, the movable soil retaining device 98 will not hinder the frost heave force sensing base 97 from moving upward.

[0035] Specific implementation method eight: See Figure 8-11As shown, the movable earth retaining device 98 of this embodiment includes a top fixed cover 981 and a multi-stage sliding sleeve. In this embodiment, a three-stage sliding sleeve is adopted, namely, a first-stage sliding sleeve 982, a second-stage sliding sleeve 983 and a third-stage sliding sleeve 984. The first-stage sliding sleeve 982 is vertically slidably installed in the top fixed cover 981, the second-stage sliding sleeve 983 is vertically slidably installed in the first-stage sliding sleeve 982, and the third-stage sliding sleeve 984 is vertically slidably installed in the second-stage sliding sleeve In the cylinder 983, the third-stage sliding sleeve 984 is fixedly mounted on the frost heave force sensing base 97, and the top fixed cover 981 is fixedly mounted on the bottom of the vertical pipe section of the L-shaped main pipe 91. In this way, during backfilling, the movable soil retaining device 98 can block the backfill soil, and when frost heave occurs, the movable soil retaining device 98 can also prevent the surrounding soil from exerting a downward force on the frost heave force sensing base 97, and the multi-stage sliding sleeve can be vertically extended and retracted, so it will not hinder the upward movement of the frost heave force sensing base 97.

[0036] Specific implementation method nine: See Figure 10-11 As shown, the length between the connection between the top end of the sliding rod 92 and the 90-degree bent rod 94 and the rotation axis 941 of the 90-degree bent rod 94 in this embodiment is smaller than the length between the connection between the tail end of the transverse anchor rod 93 and the 90-degree bent rod 94 and the rotation axis 941 of the 90-degree bent rod 94. This constitutes a lever effect, so that when the sliding rod 92 moves a small amount, the transverse anchor rod 93 will be driven to move a large amount. The advantage of this is that even if the frost heave deformation of the soil is small, the transverse anchor rod 93 can be protruded outward a large amount.

[0037] Specific implementation method ten: See Fig.10 As shown, in order to achieve the above-mentioned lever effect, the upper section 922 of the sliding rod 92 can be set as an eccentric structure, that is, the upper section 922 above the sliding guide part 921 in the middle of the sliding rod 92 is close to one side of the rotation axis 941 of the 90-degree bending rod 94.

Claims

1. A frost-proof transmission line tower support foundation suitable for frozen soil areas, characterized by: It comprises a pile foundation tube (1), a pile foundation tube top seat (2), a pile foundation tube base (3), a power transmission line pole tower connection frame (4), an internal support column of the pile foundation tube (5), an arc-shaped heat conducting pipe (6), a heating rod (8), a liquid circulation pump (55) and a frost heave piercing mechanism (9), wherein the frost heave piercing mechanism (9) is used to anchor the pile foundation tube (1) and the frozen soil together when frost heave occurs; The pile foundation cylinder top seat (2) is fixedly mounted on the top of the pile foundation cylinder (1), the power transmission line pole tower connection frame (4) is fixedly mounted on the pile foundation cylinder top seat (2), and the power transmission line pole tower connection frame (4) is used to connect with the bottom support foot of the power transmission line pole tower body (43); The internal support column (5) of the pile foundation tube is embedded in the installation cavity (11) inside the pile foundation tube (1); two vertical grooves (14) are arranged on the cavity wall of the installation cavity (11) of the pile foundation tube (1); a groove (151) is opened at the lower end of the vertical groove (14); the vertical groove (14) is connected to the groove (151); an arc-shaped heat-conducting pipe (6) is arranged at the lower end of the pile foundation tube (1); the vertical groove (14), the groove (151) and the arc-shaped heat-conducting pipe (6) are connected in sequence; A liquid circulation pump (55) is arranged in the pile foundation tube (1), and the water outlet and water return port of the liquid circulation pump (55) are respectively connected to the two vertical grooves (14), so that the water outlet of the liquid circulation pump (55), one of the vertical grooves (14), one of the grooves (151), a plurality of groups of arc-shaped heat-conducting pipes (6), another groove (151), another vertical groove (14), and the water return port of the liquid circulation pump (55) form a liquid circulation channel in sequence, and the liquid circulation channel is filled with oil; and a heating rod installation groove (54) is also arranged on the outer wall of the support column (5) inside the pile foundation tube, the heating rod installation groove (54) corresponds to the position of the vertical groove (14), and a heating rod (8) is embedded in the heating rod installation groove (54).

2. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 1 is characterized in that: The frost heave piercing mechanism (9) is fixedly mounted on the wall of the pile foundation tube (1), and comprises: an L-shaped main pipe (91), a sliding rod (92), a transverse anchor rod (93), a 90-degree bent rod (94), a frost heave force sensing base (97), and a movable earth retaining device (98), wherein the L-shaped main pipe (91) is fixedly mounted on the pile foundation tube (1), the L-shaped main pipe (91) comprises a transverse pipe section and a vertical pipe section, the sliding rod (92) is vertically slidably mounted in the vertical pipe section of the L-shaped main pipe (91); the transverse anchor rod (93) is slidably mounted in the L-shaped main pipe (91) The 90-degree bent rod (94) is installed in the transverse pipe section of the main pipe (91); the middle part of the 90-degree bent rod (94) is installed at the inner bending part of the L-shaped main pipe (91) through the rotating shaft (941), and the top end of the sliding rod (92) is connected to one of the rod sections of the 90-degree bent rod (94), and the tail end of the transverse anchor rod (93) is connected to the other rod section of the 90-degree bent rod (94); a frost heave force sensing base (97) is provided at the bottom end of the sliding rod (92), and a movable soil retaining device (98) is provided between the frost heave force sensing base (97) and the vertical pipe section of the L-shaped main pipe (91).

3. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 1 is characterized in that: Two expanded diameter wing plates (15) are symmetrically arranged on the outer wall of the lower part of the pile foundation tube (1), and the two expanded diameter wing plates (15) correspond to the two vertical grooves (14) respectively. A groove (151) is arranged in each expanded diameter wing plate (15), and a plurality of groups of mounting through holes (152) are provided on the two expanded diameter wing plates (15). An arc-shaped heat-conducting pipe (6) perpendicular to the axial direction of the pile foundation tube (1) is fixed on each group of mounting through holes (152), and the arc-shaped heat-conducting pipe (6) is connected to the groove (151) through the mounting through holes (152).

4. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 3 is characterized in that: A device installation inner cavity (51) is provided at the top of the support column (5) inside the pile foundation cylinder, and two flow channel holes (53) corresponding to the vertical groove (14) are symmetrically provided on the cylinder wall of the device installation inner cavity (51), and the water outlet and return port of the liquid circulation pump (55) are connected to the vertical groove (14) through the flow channel holes (53).

5. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 4 is characterized in that: A controller is also provided in the equipment installation cavity (51), and the temperature sensor (7), the heating rod (8) and the liquid circulation pump (55) are all electrically connected to the controller. The controller automatically controls the heating rod (8) and the liquid circulation pump (55) to operate according to the detection data of the temperature sensor (7).

6. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 1 is characterized in that: The frost heave piercing mechanism (9) is fixedly mounted on the expanded diameter wing plate (15) of the pile foundation tube (1), and a transverse retaining arm is provided on the expanded diameter wing plate (15), so that the transverse pipe section at the top of the L-shaped main pipe (91) is fixedly welded to the transverse retaining arm.

7. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 2 is characterized in that: The middle part of the sliding rod (92) is provided with a sliding guide part (921) to ensure that the sliding rod (92) can move stably vertically in the vertical pipe section of the L-shaped main pipe (91); the tail part of the transverse anchor rod (93) is provided with a sliding guide part (932) to ensure that the transverse anchor rod (93) can move stably horizontally in the transverse pipe section of the L-shaped main pipe (91).

8. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 2 is characterized in that: The first sliding hinge joint (95) is slidably mounted on one of the rod sections of the 90-degree bent rod (94), and at the same time, the first sliding hinge joint (95) is slidably connected to the top end of the sliding rod (92); the second sliding hinge joint (96) is slidably mounted on the other rod section of the 90-degree bent rod (94), and at the same time, the second sliding hinge joint (96) is slidably connected to the tail end of the transverse anchor rod (93).

9. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 1 is characterized in that: A first threading hole (13) is provided at the bottom of the pile foundation tube (1), a second threading hole (52) is provided at the axis of the support column (5) inside the pile foundation tube, the bottom end of the second threading hole (52) is communicated with the first threading hole (13) at the bottom of the pile foundation tube (1), a third threading hole (34) is provided at the axis of the pile foundation tube base (3), the top of the third threading hole (34) is communicated with the bottom of the first threading hole (13), a temperature sensor (7) is embedded at the bottom of the pile foundation tube base (3), and the cable of the temperature sensor (7) is sequentially led through the third threading hole (34), the first threading hole (13) and the second threading hole (52) to the equipment installation cavity (51) at the top of the support column (5) inside the pile foundation tube.

10. The anti-freezing and pulling out transmission line tower support foundation suitable for frozen soil areas according to claim 9, characterized in that: A fourth transverse threading hole (56) is also provided at the position of the heating rod installation groove (54), and the fourth threading hole (56) is connected to the second threading hole (52). The cable of the heating rod (8) is led into the equipment installation inner cavity (51) through the fourth threading hole (56) and the second threading hole (52). A seal is provided between the cable of the heating rod (8) and the fourth threading hole (56) to prevent oil from passing through the fourth threading hole (56).

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