Ultra-high voltage transmission line iron tower cross arm structure

Abstract

The invention relates to an ultra-high voltage transmission line iron tower cross arm structure, which belongs to the field of iron tower cross arms, and comprises a cross arm main body, and a deicing mechanism is arranged on the cross arm main body; the deicing mechanism comprises a fixing rod, the fixing rod is fixedly connected with the cross arm body, a rotating pipe is coaxially and rotationally connected to the fixing rod, a driving system is connected to the rotating pipe, the rotating pipe is driven by the driving system to rotate, and a knocking rod is elastically connected to the rotating pipe. The cross arm main body is intermittently knocked in a reciprocating mode through the knocking rod, ice on the cross arm main body falls off through vibration, deicing is achieved, the cross arm main body is intermittently knocked through the knocking block, the vibration effect of the cross arm main body can be improved, namely the deicing effect of the cross arm main body is improved, heated air acts on the cross arm main body, ice melting is facilitated, and the deicing effect is improved. And along with rotation of the connecting rod, air can be conveniently and uniformly acted on the cross arm main body, the stress uniformity of the cross arm main body is improved, and then the deicing effect is improved.

Description

Technical Field

[0001] The invention relates to a cross arm structure of an ultra-high voltage transmission line iron tower, belonging to the field of iron tower cross arms. Background Art

[0002] The crossarm of a transmission line tower (also called a lateral support frame or lateral structure) is an important component of a transmission tower, usually located on the upper structure of the tower. Its main function is to support power line conductors, guy wires, lightning arresters, etc., so that these lines maintain proper spacing and stability. The crossarms of UHV (Ultra High Voltage) transmission line towers are similar to those of conventional transmission line towers, but there are some special features in the design and use requirements, mainly because the voltage level of UHV transmission lines is higher, the transmission distance is longer, the conductor load is greater, and the environmental conditions and operating requirements faced are also more stringent. UHV transmission lines generally refer to transmission lines with AC voltages of 1000kV and above and DC voltages of 800kV and above.

[0003] The Chinese utility model patent with announcement number CN220434394U discloses a cross arm structure of a power line iron tower, including a newly added rod material, which is arranged on the cross arm of the power line iron tower through a connecting structure, and the newly added rod material includes a first newly added rod material and a second newly added rod material, one end of the second newly added rod material is arranged on the cross arm of the power line iron tower through a connecting structure, and the other end of the second newly added rod material is arranged obliquely on the first newly added rod material; one end of the first newly added rod material is arranged on the cross arm of the power line iron tower, and the other end of the second newly added rod material is provided with a cable hanging point. The utility model has the beneficial effect that the device connects the newly added rod material with the cross arm of the power line iron tower by being arranged in the connecting structure, and the stiffening rib makes the newly added rod material and the cross arm of the power line iron tower not on the same plane, thereby avoiding the problem that the newly added rod member crosses the cross arm in space. However, in the prior art, when encountering freezing weather, water condenses into frost and adheres to the cross arm. With the accumulation of ice, the weight of the cross arm and the conductor will increase significantly, resulting in a sharp increase in the total load of the transmission line, which is easy to cause the cross arm to bend, deform, or even break.

[0004] Therefore, there is a need for a UHV transmission line tower cross arm structure to achieve a de-icing function. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to overcome the deficiencies of the prior art, a cross arm structure of an ultra-high voltage transmission line iron tower is provided to realize the deicing function.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is: a cross arm structure of an ultra-high voltage transmission line iron tower, comprising a cross arm main body, on which a deicing mechanism is arranged; The deicing mechanism includes a fixed rod, which is fixedly connected to the cross arm body. A rotating tube is coaxially connected to the fixed rod, and a driving system is connected to the rotating tube, which drives the rotating tube to rotate. A knocking rod is elastically connected to the rotating tube.

[0007] Preferably, a rotating ring is coaxially fixedly provided at one end of the rotating tube, the rotating ring is sleeved on the fixed rod, a connecting rod is fixedly provided on the outer peripheral wall of the rotating ring, the knocking rod is located on the side of the connecting rod away from the rotating tube, a first spring is provided between the knocking rod and the connecting rod, and both ends of the first spring are respectively connected to the connecting rod and the knocking rod.

[0008] Preferably, the rotating ring is rotatable and sealingly connected to the fixed rod, a box is fixedly provided on the fixed rod, the box is located on the side of the connecting ring close to the rotating tube, one side of the box is open, the rotating ring is rotatable and sealingly connected to the open side of the box, the rotating tube and the driving system are both located in the box, air holes are provided on the box, fan blades are installed on the outer peripheral wall of the rotating tube, an air duct is provided on the rotating ring, the air duct extends to the outer end of the connecting rod, and a heating source is provided in the box.

[0009] Preferably, a connecting pipe is fixedly provided on the connecting rod, the connecting pipe is located between the knocking rod and the connecting rod, and the connection is connected to the airway.

[0010] Preferably, an auxiliary mechanism is further included, which includes a fixed frame, which is fixedly connected to the cross arm body, a moving rod is passed through the fixed frame, a knocking block is fixedly provided at one end of the moving rod, and a push plate is fixedly provided at the other end of the moving rod, the push plate is located on a side of the moving rod close to the de-icing mechanism, the moving rod is particularly elastic, and the push plate is elastically connected to the fixed frame.

[0011] Preferably, a guide rod is fixedly provided on the push plate, the guide rod is parallel to the moving rod, the guide rod passes through the fixed frame, a second spring is provided between the push plate and the fixed frame, and both ends of the second spring are respectively connected to the push plate and the fixed frame.

[0012] Preferably, a roller is provided on the connecting rod.

[0013] Preferably, the cross arm body includes an upper beam, a lower beam, two side beams and two oblique beams. The upper beam and the lower beam are distributed vertically, and the two side beams are distributed horizontally. The upper beam, the lower beam and the two side beams together form a trapezoid, and the two oblique beams cross to form an X shape. The four ports of the X-shaped structure are fixedly connected to the four corners of the trapezoidal structure through four connecting parts.

[0014] Preferably, two deicing mechanisms are provided, and the two deicing mechanisms are respectively arranged on the front and rear sides of the inclined beam.

[0015] Preferably, the driving system comprises a driving gear and a driven gear, the driving gear is driven by a motor, the driven gear is mounted on the outer peripheral wall of the rotating tube, and the driving gear is meshed with the driven gear.

[0016] Compared with the prior art, the advantages of the present invention are: The present invention discloses a cross-arm structure of an ultra-high voltage transmission line iron tower. A knocking rod intermittently and reciprocally knocks a cross-arm body, so that ice on the cross-arm body falls off due to vibration, thereby achieving de-icing. Secondly, a knocking block intermittently knocks the cross-arm body, so that the vibration effect of the cross-arm body can be improved, that is, the de-icing effect of the cross-arm body can be improved. In addition, heated air is applied to the cross-arm body to facilitate ice melting, thereby improving the de-icing effect. Moreover, as the connecting rod rotates, air can be evenly applied to the cross-arm body, thereby improving the uniformity of the cross-arm body, thereby improving the de-icing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a cross arm structure of an ultra-high voltage transmission line tower according to the present invention; Figure 2 It is a front view of a cross arm structure of an ultra-high voltage transmission line tower of the present invention; Figure 3 A top view of a cross arm structure of an ultra-high voltage transmission line tower according to the present invention; Figure 4 It is a left side view of a cross arm structure of an ultra-high voltage transmission line tower of the present invention; Figure 5 is a schematic diagram of the connection structure of two de-icing mechanisms; Figure 6 Schematic diagram of the internal structure of the box; Figure 7 for Figure 5 A magnified view of part A; Figure 8 It is a schematic diagram of the connection structure between the connecting pipe and the connecting rod; Fig. 9 It is a structural diagram of the auxiliary mechanism.

[0018] in: Cross arm main body 1, de-icing mechanism 2, auxiliary mechanism 3; An upper beam 101, a lower beam 102, a side beam 103, and an oblique beam 104; Fixed rod 201, rotating tube 202, rotating ring 203, connecting rod 204, first spring 205, box 206, air hole 207, fan blade 208, air channel 209, heating source 210, connecting tube 211, driving gear 212, driven gear 213, motor 214, roller 215, knocking rod 216; Fixed frame 301 , moving rod 302 , knocking block 303 , push plate 304 , guide rod 305 , second spring 306 . DETAILED DESCRIPTION

[0019] like Figure 1-9 As shown, a UHV transmission line tower cross arm structure in this embodiment includes a cross arm body 1, and a deicing mechanism 2 is provided on the cross arm body 1; The cross arm body 1 comprises an upper beam 101, a lower beam 102, two side beams 103 and two oblique beams 104. The upper beam 101 and the lower beam 102 are distributed vertically, and the two side beams 103 are distributed horizontally. The upper beam 101, the lower beam 102 and the two side beams 103 are surrounded to form a trapezoid. The two oblique beams 104 cross to form an X shape. The four ports of the X-shaped structure are fixedly connected to the four corners of the trapezoidal structure through four connecting pieces respectively. The de-icing mechanism 2 includes a fixed rod 201, the fixed rod 201 is fixedly connected to the cross arm body 1, a rotating tube 202 is coaxially rotatably connected to the fixed rod 201 through a bearing, the rotating tube 202 is connected to a driving system, and the rotating tube 202 is driven to rotate by the driving system, and a knocking rod 216 is elastically connected to the rotating tube 202; During de-icing, the rotating tube 202 is rotated by the driving system, wherein the bearing plays a role of supporting the rotating tube 202. The rotation of the rotating tube 202 drives the knocking rod 216 to rotate synchronously. Through calculation, the knocking rod 216 is made to knock the cross arm body 1 back and forth. Since the knocking rod 216 is elastically connected to the rotating tube 202, it is prevented that the knocking rod 216 and the cross arm body 1 are stuck. Specifically, when the knocking rod 216 rotates, it knocks the two inclined beams 104 back and forth. Here, the knocking rod 216 knocks the cross arm body 1 back and forth, so that the cross arm body 1 vibrates, and the ice on the cross arm body 1 is shaken off, thereby achieving de-icing. The deicing mechanism 2 is provided with two, and the two deicing mechanisms 2 are respectively arranged at the front and rear sides of the inclined beam 104, wherein the two fixing rods 201 form a whole, and the fixing rods 201 forming a whole pass through the intersection of the two inclined beams 104; A rotating ring 203 is coaxially fixedly provided at one end of the rotating tube 202, and the rotating ring 203 is sleeved on the fixed rod 201. A connecting rod 204 is fixedly provided on the outer peripheral wall of the rotating ring 203. There are multiple connecting rods 204, and the multiple connecting rods 204 are circumferentially arranged around the rotating ring 203. The specific number of the connecting rods 204 is two. The number of the knocking rods 216 is equal to the number of the connecting rods 204 and corresponds one to one. The knocking rods 216 are located on the side of the connecting rod 204 away from the rotating tube 202. A first spring 205 is provided between the knocking rod 216 and the connecting rod 204, and the two ends of the first spring 205 are respectively connected to the connecting rod 204 and the knocking rod 216; The rotation of the rotating tube 202 drives the rotating ring 203 and the connecting rod 204 to rotate synchronously. During the rotation of the connecting rod 204, the knocking rod 216 is driven to rotate through the spring. When the knocking rod 216 contacts the cross arm body 1, the spring is deformed to prevent it from getting stuck. When the knocking rod 216 is separated from the cross arm body 1, the spring is restored. The rotating ring 203 is rotatable and sealedly connected to the fixed rod 201, a box 206 is fixedly arranged on the fixed rod 201, the box 206 is located on the side of the connecting ring close to the rotating tube 202, one side of the box 206 is open, the rotating ring 203 is rotatable and sealedly connected to the open side of the box 206, the rotating tube 202 and the driving system are both located in the box 206, the box 206 is provided with air holes 207, the outer peripheral wall of the rotating tube 202 is installed with fan blades 208, the rotating ring 203 is provided with an air passage 209, the air passage 209 extends to the outer end of the connecting rod 204, and a heating source 210 is arranged in the box 206; When the rotating tube 202 rotates, the fan blades 208 are driven to rotate, so that the air in the box 206 is discharged from the air passage 209, and the air outside the box 206 enters from the air hole 207, and the air in the box 206 is heated by the heating source 210, and the heated air acts on the cross arm body 1 when discharged, so as to facilitate ice melting, thereby improving the deicing effect; The connecting rod 204 is fixedly provided with a connecting pipe 211, and the connecting pipe 211 is located between the knocking rod 216 and the connecting rod 204, and the connection is connected with the airway 209; Part of the air in the air passage 209 is discharged from the connecting pipe 211 and acts on the oblique beam 104, while the rest of the air in the air passage 209 acts on the upper beam 101, the lower beam 102 and the two side beams 103. Here, the uniformity of the air acting on the cross arm body 1 can be improved by rotating the connecting rod 204, thereby improving the deicing effect; The driving system includes a driving gear 212 and a driven gear 213. The driving gear 212 is driven by a motor 214. The driven gear 213 is mounted on the outer peripheral wall of the rotating tube 202. The driving gear 212 is meshed with the driven gear 213. During the start-up process of the motor 214, the driving gear 212 is driven to rotate, and the rotation of the driving gear 212 drives the rotating tube 202 to rotate through the driven gear 213; It also includes an auxiliary mechanism 3, the auxiliary mechanism 3 includes a fixing frame 301, the fixing frame 301 is fixedly connected to the cross arm body 1, a moving rod 302 is passed through the fixing frame 301, a knocking block 303 is fixedly provided at one end of the moving rod 302, a push plate 304 is fixedly provided at the other end of the moving rod 302, the push plate 304 is located on a side of the moving rod 302 close to the deicing mechanism 2, the moving rod 302 is particularly elastic, and the push plate 304 is elastically connected to the fixing frame 301; As the connecting rod 204 rotates, the connecting rod 204 pushes the push plate 304 back and forth, so that the push plate 304 moves along the length direction of the moving rod 302. The movement of the push plate 304 drives the knocking block 303 to move synchronously through the moving rod 302. Since the push plate 304 is elastically connected to the fixing frame 301, when the connecting rod 204 and the push plate 304 are separated, the push plate 304 moves in the opposite direction to achieve reset. In this way, the knocking block 303 moves back and forth, and through calculation, the knocking block 303 knocks the cross arm body 1 back and forth, so as to improve the vibration effect of the cross arm body 1, that is, to improve the deicing effect of the cross arm body 1. The push plate 304 is fixedly provided with a guide rod 305, two of which are provided, and the guide rod 305 is parallel to the moving rod 302, and the guide rod 305 passes through the fixing frame 301, and a second spring 306 is provided between the push plate 304 and the fixing frame 301, and the two ends of the second spring 306 are respectively connected to the push plate 304 and the fixing frame 301; When the connecting rod 204 pushes the push plate 304, the guide rod 305 is driven to move synchronously, and the second spring 306 is deformed. When the connecting rod 204 is separated from the push plate 304, the push plate 304 is reset by the elastic action of the second spring 306, and the guide rod 305 cooperates with the fixing frame 301, and the airway 209 guides the push plate 304 when it moves; The connecting rod 204 is provided with a roller 215. When the connecting rod 204 rotates, the roller 215 contacts the push plate 304, thereby reducing friction and facilitating the rotation of the connecting rod 204. Of course, in order to increase the frequency of the knocking block 303 knocking the cross arm body 1, the two de-icing mechanisms 2 intermittently push the push plate 304 to move; To summarize, by intermittently reciprocatingly knocking the crossarm body 1 through the knocking rod 216, the ice on the crossarm body 1 is vibrated and falls off, thereby achieving de-icing. Secondly, by intermittently knocking the crossarm body 1 through the knocking block 303, the vibration effect of the crossarm body 1 can be improved, that is, the de-icing effect of the crossarm body 1 is improved. In addition, by applying heated air to the crossarm body 1, the ice is melted, thereby improving the de-icing effect. Moreover, with the rotation of the connecting rod 204, the air is evenly applied to the crossarm body 1, thereby improving the uniformity of the crossarm body 1 and further improving the de-icing effect.

[0020] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A cross arm structure of an ultra-high voltage transmission line tower, comprising a cross arm body (1), characterized in that: The cross arm body (1) is provided with a deicing mechanism (2); The deicing mechanism (2) comprises a fixed rod (201), the fixed rod (201) being fixedly connected to the cross arm body (1), a rotating tube (202) being coaxially rotatably connected to the fixed rod (201), the rotating tube (202) being connected to a driving system, the rotating tube (202) being driven to rotate by the driving system, and a knocking rod (216) being elastically connected to the rotating tube (202).

2. The UHV transmission line tower cross arm structure according to claim 1, characterized in that: A rotating ring (203) is coaxially fixedly disposed at one end of the rotating tube (202); the rotating ring (203) is sleeved on the fixed rod (201); a connecting rod (204) is fixedly disposed on the outer peripheral wall of the rotating ring (203); the knocking rod (216) is located on a side of the connecting rod (204) away from the rotating tube (202); a first spring (205) is disposed between the knocking rod (216) and the connecting rod (204); and two ends of the first spring (205) are respectively connected to the connecting rod (204) and the knocking rod (216).

3. The UHV transmission line tower cross arm structure according to claim 2, characterized in that: The rotating ring (203) is rotatably and hermetically connected to the fixed rod (201); a box (206) is fixedly arranged on the fixed rod (201); the box (206) is located on a side of the connecting ring close to the rotating tube (202); one side of the box (206) is open; the rotating ring (203) is rotatably and hermetically connected to the open side of the box (206); the rotating tube (202) and the driving system are both located in the box (206); an air hole (207) is arranged on the box (206); a fan blade (208) is installed on the outer peripheral wall of the rotating tube (202); an air duct (209) is arranged on the rotating ring (203); the air duct (209) extends to the outer end of the connecting rod (204); and a heating source (210) is arranged in the box (206).

4. The UHV transmission line tower cross arm structure according to claim 3, characterized in that: A connecting pipe (211) is fixedly provided on the connecting rod (204); the connecting pipe (211) is located between the knocking rod (216) and the connecting rod (204); the connection is in communication with the airway (209).

5. The UHV transmission line tower cross arm structure according to claim 2, characterized in that: The auxiliary mechanism (3) further comprises an auxiliary mechanism (3), the auxiliary mechanism (3) comprising a fixing frame (301), the fixing frame (301) being fixedly connected to the cross arm body (1), a moving rod (302) being passed through the fixing frame (301), a knocking block (303) being fixedly provided at one end of the moving rod (302), a push plate (304) being fixedly provided at the other end of the moving rod (302), the push plate (304) being located on a side of the moving rod (302) close to the deicing mechanism (2), the moving rod (302) being particularly elastic, and the push plate (304) being elastically connected to the fixing frame (301).

6. The UHV transmission line tower cross arm structure according to claim 5, characterized in that: A guide rod (305) is fixedly arranged on the push plate (304), the guide rod (305) is parallel to the moving rod (302), and the guide rod (305) passes through the fixed frame (301). A second spring (306) is arranged between the push plate (304) and the fixed frame (301), and two ends of the second spring (306) are respectively connected to the push plate (304) and the fixed frame (301).

7. The UHV transmission line tower cross arm structure according to claim 5, characterized in that: A roller (215) is provided on the connecting rod (204).

8. The UHV transmission line tower cross arm structure according to claim 1, characterized in that: The cross arm body (1) comprises an upper beam (101), a lower beam (102), two side beams (103) and two oblique beams (104); the upper beam (101) and the lower beam (102) are distributed vertically, and the two side beams (103) are distributed horizontally; the upper beam (101), the lower beam (102) and the two side beams (103) are combined to form a trapezoid; the two oblique beams (104) cross to form an X-shape; and four ports of the X-shaped structure are fixedly connected to four corners of the trapezoidal structure via four connecting pieces.

9. The UHV transmission line tower cross arm structure according to claim 8, characterized in that: Two deicing mechanisms (2) are provided, and the two deicing mechanisms (2) are respectively provided on the front and rear sides of the inclined beam (104).

10. The UHV transmission line tower cross arm structure according to claim 1, characterized in that: The driving system comprises a driving gear (212) and a driven gear (213); the driving gear (212) is driven by a motor (214); the driven gear (213) is mounted on the outer peripheral wall of the rotating tube (202); and the driving gear (212) meshes with the driven gear (213).

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