An ice and snow resistant power transmission tower

Abstract

The present invention relates to the technical field of power transmission towers, and in particular to an ice and snow resistant power transmission tower, comprising a power transmission tower body and a conductor made of metal, wherein a plurality of fixing cylinders are symmetrically fixedly installed near the top of the power transmission tower body, and support arms are rotatably provided at both ends of the plurality of fixing cylinders, and a threading hole is provided at one end of the support arm away from the fixing cylinder, and the conductor is inserted and arranged inside the threading hole, and the support arm is connected with the support arm through a buffer component; the beneficial effect of the present invention is that when frost adheres to the surface of the conductor, the conductor can be shaken along the direction in which it extends, and the shaking along the extension direction of the conductor can generate a shear force parallel to the ice layer on the surface of the conductor, which helps the ice layer to fall off the surface of the conductor, reduces the pressure and potential damage of the conductor on the ice weight, effectively avoids the problem of the support arm breaking due to a large amount of frost adhering to the surface of the conductor, and improves the service life of the power transmission tower body.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission iron towers, and in particular to an ice and snow resistant power transmission iron tower. Background Art

[0002] Transmission towers are important structures used to support conductors in power systems. They are usually made of steel. Their main function is to carry the conductors, insulators and accessories of the conductors and ensure their safe and stable operation under severe weather and external environmental influences.

[0003] A compact corner transmission tower for strong wind areas is disclosed in Chinese patent publication number CN117145282B. The compact corner transmission tower for strong wind areas is suspended on the line connection plates of each line cavity in the corresponding line cavity through at least two groups of suspended insulating strings. The centers of the first connection holes corresponding to the suspended insulating strings are located on the same oblique line, and the opposite directions of the phase line resultant forces of each circuit are located within the angle formed by the two suspended insulating strings. On the one hand, the tension of the suspended insulating strings is applied to both sides of the tower body, and the tower body is more balanced in force than a tension tower. Therefore, it can withstand more loads of the conductors and wind loads, thereby improving the overall ability to withstand lateral loads such as wind loads.

[0004] However, compared with the existing technology in the related field, in snowy weather, a layer of frost may form on the surface of the conductor. When the temperature is below the freezing point, water vapor in the air will directly condense on the surface of the conductor to form ice crystals. These ice crystals may become thicker and thicker with the accumulation of time, forming a layer of hard frost. The formation of this frost may cause the current-carrying capacity of the conductor to decrease and increase the weight of the conductor. When the surface of the conductor reaches a certain weight due to the large amount of frost attached to it, the conductor will bend. The bending of the conductor will increase the load on the tower, which may easily cause the tower arm to break, posing certain safety hazards. Summary of the invention

[0005] The present invention provides an ice and snow resistant power transmission tower to solve the problems mentioned in the background technology.

[0006] An ice and snow resistant power transmission tower of the present invention adopts the following technical scheme: it includes a power transmission tower body and a conductor made of metal, a plurality of fixed cylinders are symmetrically fixedly installed near the top of the power transmission tower body, both ends of the plurality of fixed cylinders are rotatably provided with support arms, an end of the support arm away from the fixed cylinder is provided with a threading hole, the conductor is inserted and arranged inside the threading hole, the support arm is connected with the support arm through a buffer component, when the surface of the conductor becomes heavier due to condensation of ice and frost, the bending of the conductor will prompt the support arm to rotate with the fixed cylinder as the axis, so that when the support arm rotates, the buffer component is used to buffer the load borne by the support arm, and then prompts the support arm to drive the conductor to shake, and then utilizes the shaking to help the ice layer fall off the surface of the conductor.

[0007] Furthermore, the buffer assembly includes a fixed block fixedly arranged in the middle of the fixed cylinder, a connecting disk is rotatably provided inside the fixed cylinder, the connecting disk and the fixed block are connected by a torsional elastic member, a movable column is provided at the end of the fixed cylinder for circumferential rotation and axial sliding, the movable column and the connecting disk are connected by a plurality of arc-shaped elastic members, and protrusions are fixedly provided at positions of the inner wall of the fixed cylinder corresponding to the plurality of arc-shaped elastic members. When the movable column rotates, the protrusions are used to cause the arc-shaped elastic member to deform, thereby utilizing the deformation of the arc-shaped elastic member to cause the movable column to slide toward the outside of the fixed cylinder.

[0008] Furthermore, a mounting plate is fixedly mounted on the outer surface of the movable column, and the mounting plate is used for mounting the support arm.

[0009] Furthermore, a sleeve is fixedly mounted on the outer surface of the movable column, and the sleeve is used to cover the opening of the fixed cylinder.

[0010] Furthermore, the cross-section of the protrusion is arc-shaped, and an arc-shaped groove is provided in the middle of the protrusion.

[0011] Furthermore, the edges of the arc-shaped elastic parts are all formed with rounded corners.

[0012] Furthermore, the outer surfaces of the connecting plate and the movable column are both in contact with the inner wall of the fixed cylinder, and the inner wall of the sleeve is in contact with the outer surface of the fixed cylinder.

[0013] Furthermore, when the support arm is in a horizontal state, the arc-shaped elastic member is located between the plurality of protrusions, and at this time, the sleeve fits with the end of the fixing tube.

[0014] Furthermore, a connection block is fixedly provided on the outer surface of the fixing cylinder, and the connection block is fixedly installed with the transmission tower body by bolts.

[0015] Furthermore, a buffer pad is fixedly provided inside the threading hole, and the wire between two adjacent arms is in a bent state.

[0016] The beneficial effect of the present invention is that when frost adheres to the surface of the conductor, the conductor can be shaken along its extension direction by setting a buffer component. The shaking along the extension direction of the conductor can generate a shear force parallel to the ice layer on the surface of the conductor, which helps the ice layer to fall off the surface of the conductor, reduces the pressure and potential damage of the ice weight on the conductor, and compared with radial shaking, the shaking along the extension direction of the conductor has less effect on the mechanical structure of the conductor, reduces the risk of conductor damage caused by shaking, effectively avoids the problem of arm breakage caused by a large amount of frost adhering to the surface of the conductor, improves the service life of the transmission tower body, and enables the transmission tower body to be suitable for a variety of harsh working environments. At the same time, the arc-shaped grooves set on the protrusions can provide the conductor with shaking of various intensities. Through shaking of different intensities, the ice layer on the surface of the conductor can be gradually destroyed and removed, avoiding damage to the conductor caused by excessive force at one time. Shaking of different intensities helps to reduce the mechanical stress on the conductor caused by the sudden falling of the ice layer, and reduces the risk of damage to the conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the state after the conductor of the present invention is laid;

[0019] Figure 2 It is a structural schematic diagram of the power transmission tower body of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the support arm of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the fixing tube of the present invention;

[0022] Figure 5 It is a schematic diagram of the disassembled structure of the buffer assembly and the fixed cylinder of the present invention;

[0023] Figure 6 It is a schematic diagram of the state of the movable column when the arc-shaped elastic member of the present invention is not in contact with the protrusion;

[0024] Figure 7 It is a schematic diagram of the state of the movable column when the arc-shaped elastic member of the present invention contacts the highest point of the protrusion;

[0025] Figure 8 It is a schematic diagram of the state of the movable column when the arc-shaped elastic member and the arc-shaped groove of the present invention cooperate with each other;

[0026] Fig. 9 It is a schematic diagram of the structure of the bump of the present invention.

[0027] In the figure: 1, transmission tower body; 2, conductor; 3, fixing tube; 301, connection block; 4, support arm; 401, threading hole; 4011, buffer pad; 5, buffer assembly; 501, fixing block; 502, connecting plate; 503, torsion elastic member; 504, movable column; 5041, mounting plate; 5042, sleeve; 505, arc elastic member; 506, protrusion; 5061, arc groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] An embodiment of an ice and snow resistant transmission tower of the present invention is as follows Figures 1 to 9 As shown, it comprises a transmission tower body 1 and a conductor 2 made of metal, wherein a plurality of fixing cylinders 3 are symmetrically fixedly installed near the top of the transmission tower body 1 (a connecting block 301 is fixedly installed on the outer surface of the fixing cylinder 3, and the connecting block 301 is fixedly installed with the transmission tower body 1 by bolts), and both ends of the plurality of fixing cylinders 3 are rotatably provided with support arms 4, and the end of the support arm 4 away from the fixing cylinder 3 is provided with a threading hole 401, and the conductor 2 is inserted and arranged inside the threading hole 401, and a buffer pad 4011 is fixed inside the threading hole 401, and the conductor 2 between two adjacent support arms 4 is bent The wire 2 between two adjacent arms 4 is in a bent state, so that the two adjacent arms 4 can be rotated separately to prevent the swing of a single arm 4 from affecting the other arm 4. The arm 4 is connected to the arm 4 through the buffer component 5. When the surface of the wire 2 is aggravated by condensation of frost, the bending of the wire 2 will prompt the arm 4 to rotate with the fixed tube 3 as the axis. Therefore, when the arm 4 rotates, the buffer component 5 is used to buffer the load borne by the arm 4, and then prompt the arm 4 to drive the wire 2 to shake, and then use the shaking to help the ice layer fall off the surface of the wire 2.

[0030] like Figures 4 to 6As shown, the buffer assembly 5 includes a fixed block 501 fixedly arranged in the middle of the fixed cylinder 3, a connecting disk 502 is rotatably arranged inside the fixed cylinder 3, and the connecting disk 502 and the fixed block 501 are matched and connected by a torsion elastic member 503, and a movable column 504 is arranged at the end of the fixed cylinder 3 for circumferential rotation and axial sliding, and a mounting disk 5041 is fixedly installed on the outer surface of the movable column 504, and the mounting disk 5041 is used to install the support arm 4, and a plurality of arc elastic members are arranged between the movable column 504 and the connecting disk 502. The inner wall of the fixed cylinder 3 is fixed with a plurality of arc-shaped elastic members 505 at positions corresponding to the plurality of arc-shaped elastic members 505. The cross-sectional shape of the protrusion 506 is an arc-shaped, and an arc-shaped groove 5061 is provided in the middle of the protrusion 506. The edges of the arc-shaped elastic members 505 are all formed with rounded corners. When the movable column 504 rotates, the protrusion 506 is used to cause the arc-shaped elastic member 505 to deform, so as to use the deformation of the arc-shaped elastic member 505 to cause the movable column 504 to slide toward the outside of the fixed cylinder 3. Figure 3 and Figure 6 As shown, when the support arm 4 is in a horizontal state, the arc-shaped elastic member 505 is located between the plurality of protrusions 506, and at this time, the sleeve 5042 is in contact with the end of the fixed cylinder 3, as shown in FIG. Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, when the movable column 504 rotates, the cooperation between the arc-shaped elastic member 505 and the protrusion 506 is utilized so that the movable column 504 can drive the support arm 4 to perform reciprocating axial sliding (the curvature of the arc-shaped elastic member 505 will become smaller due to the squeezing of the protrusion 506, so that when the curvature of the arc-shaped elastic member 505 becomes smaller, the arc-shaped elastic member 505 will push the movable column 504, and then when the protrusion 506 no longer squeezes the arc-shaped elastic member 505, the curvature of the arc-shaped elastic member 505 will be restored, and then the arc-shaped elastic member 505 can pull the movable column 504 back, so that the arc-shaped elastic member 505 can cooperate with the protrusion 506 to control the reciprocating sliding of the movable column 504), so that the wire 2 can shake along the direction in which it extends, as shown in FIG. Figures 6 to 9 As shown, by utilizing the arc groove 5061 provided on the protrusion 506, when the movable column 504 rotates, the arc elastic member 505 can switch back and forth between large deformation and small deformation, thereby providing the wire 2 with a variety of shaking forces. Through the shaking of different forces, the ice layer on the surface of the wire 2 can be gradually destroyed and removed, avoiding damage to the wire 2 caused by excessive force at one time. The shaking of different forces helps to reduce the mechanical stress on the wire 2 caused by the sudden shedding of the ice layer, thereby reducing the risk of damage to the wire 2 (such as Figure 1 as shown).

[0031] like Figures 3 to 6As shown, a sleeve 5042 is fixedly installed on the outer surface of the movable column 504, and the sleeve 5042 is used to cover the opening of the fixed cylinder 3. The outer surfaces of the connecting plate 502 and the movable column 504 are both in contact with the inner wall of the fixed cylinder 3, and the inner wall of the sleeve 5042 is in contact with the outer surface of the fixed cylinder 3. The set sleeve 5042 can be used to cover the opening of the fixed cylinder 3 to prevent the buffer assembly 5 from condensing inside the fixed cylinder 3 and causing it to fail to work normally.

[0032] The transmission tower body 1, the conductor 2 and the support arm 4 described in this application are all well-known technologies in the technical field, so their specific structures and working principles are not described in detail.

[0033] The working process is as follows:

[0034] S1, such as Figures 1 to 6 As shown, when frost adheres to the surface of the wire 2, the pulling force of the wire 2 will cause the support arm 4 to rotate. When the support arm 4 rotates, the movable column 504 will rotate together with the support arm 4. At this time, the arc-shaped elastic member 505 connects the movable column 504 and the connecting disk 502 together, so that the connecting disk 502 can cause the torsion elastic member 503 to twist and store force;

[0035] S2, such as Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, when the movable column 504 rotates, the cooperation between the arc-shaped elastic member 505 and the protrusion 506 is utilized so that the movable column 504 can drive the support arm 4 to perform reciprocating axial sliding (the curvature of the arc-shaped elastic member 505 will become smaller due to the squeezing of the protrusion 506, so that when the curvature of the arc-shaped elastic member 505 becomes smaller, the arc-shaped elastic member 505 will push the movable column 504, and then when the protrusion 506 no longer squeezes the arc-shaped elastic member 505, the curvature of the arc-shaped elastic member 505 will be restored, and then the arc-shaped elastic member 505 can pull the movable column 504 back, so that the arc-shaped elastic member 505 can cooperate with the protrusion 506 to control the reciprocating sliding of the movable column 504), so that the wire 2 can shake along the direction in which it extends (such as Figure 1 shown);

[0036] S3, such as Figure 1 As shown, the shaking along the extension direction of the conductor 2 can generate a shear force parallel to the ice layer on the surface of the conductor 2, which helps the ice layer to fall off the surface of the conductor 2, reducing the pressure and potential damage of the ice weight on the conductor 2. At the same time, compared with the radial shaking, the shaking along the extension direction of the conductor 2 has less impact on the mechanical structure of the conductor 2, reducing the risk of damage to the conductor 2 caused by shaking, effectively avoiding the problem of the support arm 4 breaking due to a large amount of frost attached to the surface of the conductor 2, and improving the service life of the transmission tower body 1, and allowing the transmission tower body 1 to be suitable for a variety of harsh working environments;

[0037] S4, such as Figures 4 to 9 As shown, by utilizing the arc groove 5061 provided on the protrusion 506, when the movable column 504 rotates, the arc elastic member 505 can switch back and forth between large deformation and small deformation, thereby providing the wire 2 with a variety of shaking forces. Through the shaking of different forces, the ice layer on the surface of the wire 2 can be gradually destroyed and removed, avoiding damage to the wire 2 caused by excessive force at one time. The shaking of different forces helps to reduce the mechanical stress on the wire 2 caused by the sudden shedding of the ice layer, thereby reducing the risk of damage to the wire 2 (such as Figure 1 shown);

[0038] S5, such as Figures 1 to 6 As shown, when the frost falls off due to the shaking of the wire 2, the weight of the wire 2 will be reduced, and then the torsion elastic member 503 can be used to allow the support arm 4 to control the wire 2 to return to a straight state.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ice and snow resistant power transmission tower, comprising a power transmission tower body (1) and a conductor (2) made of metal, characterized in that: A plurality of fixing cylinders (3) are symmetrically fixedly installed near the top of the transmission tower body (1), and both ends of the plurality of fixing cylinders (3) are rotatably provided with support arms (4), and one end of the support arm (4) away from the fixing cylinder (3) is provided with a threading hole (401), and the wire (2) is inserted and arranged inside the threading hole (401), and the support arm (4) is connected to the support arm (4) through a buffer component (5), and when the surface of the wire (2) is aggravated due to condensation of ice and frost, the bending of the wire (2) will cause the support arm (4) to rotate with the fixing cylinder (3) as the axis, so that when the support arm (4) rotates, the buffer component (5) is used to buffer the load borne by the support arm (4), and then cause the support arm (4) to drive the wire (2) to shake, and then use the shaking to help the ice layer fall off the surface of the wire (2); The buffer assembly (5) comprises a fixed block (501) fixedly arranged in the middle of the fixed cylinder (3); a connecting disk (502) is rotatably provided inside the fixed cylinder (3); the connecting disk (502) and the fixed block (501) are cooperatively connected via a torsion elastic member (503); a movable column (504) is provided at the end of the fixed cylinder (3) for circumferential rotation and axial sliding; the movable column (504) and the connecting disk (502) are cooperatively connected via a plurality of arc-shaped elastic members (505); protrusions (506) are fixedly provided on the inner wall of the fixed cylinder (3) at positions corresponding to the plurality of arc-shaped elastic members (505); when the movable column (504) rotates, the protrusions (506) are used to cause the arc-shaped elastic member (505) to deform, thereby causing the movable column (504) to slide toward the outside of the fixed cylinder (3) by utilizing the deformation of the arc-shaped elastic member (505).

2. The ice and snow resistant power transmission tower according to claim 1, characterized in that: A mounting plate (5041) is fixedly mounted on the outer surface of the movable column (504), and the mounting plate (5041) is used to mount the support arm (4).

3. The ice and snow resistant power transmission tower according to claim 2, characterized in that: A sleeve (5042) is fixedly mounted on the outer surface of the movable column (504), and the sleeve (5042) is used to cover the opening of the fixed cylinder (3).

4. The ice and snow resistant power transmission tower according to claim 3, characterized in that: The cross-sectional shape of the protrusion (506) is arc-shaped, and an arc-shaped groove (5061) is provided in the middle of the protrusion (506).

5. The ice and snow resistant power transmission tower according to claim 4, characterized in that: The edges of the arc-shaped elastic member (505) are all formed with rounded corners.

6. The ice and snow resistant power transmission tower according to claim 3, characterized in that: The outer surfaces of the connecting disk (502) and the movable column (504) are both in contact with the inner wall of the fixed cylinder (3), and the inner wall of the sleeve (5042) is in contact with the outer surface of the fixed cylinder (3).

7. The ice and snow resistant power transmission tower according to claim 4, characterized in that: When the support arm (4) is in a horizontal state, the arc-shaped elastic member (505) is located between the plurality of protrusions (506), and at this time, the sleeve (5042) fits with the end of the fixing tube (3).

8. The ice and snow resistant power transmission tower according to claim 1, characterized in that: A connection block (301) is fixedly provided on the outer surface of the fixing cylinder (3), and the connection block (301) is fixedly mounted on the power transmission tower body (1) by means of bolts.

9. The ice and snow resistant power transmission tower according to claim 1, characterized in that: A buffer pad (4011) is fixedly provided inside the threading hole (401), and the wire (2) between two adjacent support arms (4) is in a bent state.

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