Lengthened supporting leg of power transmission tower

Abstract

The utility model relates to a lengthened supporting leg of a power transmission tower. The top ends of the lengthened supporting legs are connected with the bottom end flanges of the supporting legs of the power transmission tower; the opposite supporting rod group consists of two supporting beams of which the middle parts are crossed and fixed into a whole; the connecting lock rods are arranged on the outer walls of the two adjacent lengthened supporting legs in a penetrating manner; a plurality of supporting steel pipe piles are arranged, one supporting steel pipe pile is fixedly arranged on the bottom face of each lengthened supporting leg, and mortar pouring holes are formed in the peripheral faces of the tops of the supporting steel pipe piles; a perpendicularity detection mechanism is further installed on the outer wall of the bottom of one lengthened supporting leg. The opposite supporting rod sets are arranged between every two adjacent lengthened supporting legs, the upper ends of the supporting beams are fixedly connected with the inner side walls of the supporting legs of the power transmission tower, and the lower ends of the supporting beams are fixedly connected with the inner side walls of the lengthened supporting legs, so that the overall rigidity and stability of the lengthened supporting legs can be enhanced, and the inclination and sinking phenomena of the power transmission tower are effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission tower technical field, concretely is a kind of lengthening support leg of power transmission tower. BACKGROUND

[0002] In power transmission system, as the key structure of supporting high-voltage transmission line, the stability and safety of power transmission tower are crucial, with the growth of power demand, transmission line often needs to span more vast territory, which requires power transmission tower not only to have enough bearing capacity, but also to adapt to complex geographical environment, in some cases, especially in soft soil foundation or the area needing to increase tower foundation stability, the length of traditional power transmission tower support leg can not meet the requirements, at this time, if directly increasing the height of power transmission tower or changing its design, not only cost is high, but also construction difficulty is big, and cycle is long;

[0003] Therefore, it is particularly important to develop an economical and efficient power transmission tower lengthening support leg structure, and the traditional lengthening method often ignores the strengthening of the stability of the lengthening support leg, which may cause problems such as inclination and subsidence in actual use, seriously affecting the safe operation of the power transmission tower, therefore, we improve the lengthening support leg of the current power transmission tower to meet the use requirement of soft soil foundation for adding power transmission tower lengthening support leg. CONTENT OF UTILITY MODEL

[0004] The utility model solves the technical problem in the prior art, and provides a lengthening support leg of power transmission tower suitable for soft soil foundation and meeting the lengthening of power transmission tower support leg.

[0005] The technical problem solved by the utility model is solved by the following technical scheme, a lengthening support leg of power transmission tower, comprising;

[0006] Four lengthening support legs, the top end of the lengthening support leg is connected with the bottom end flange of the support leg of the power transmission tower;

[0007] A plurality of groups of opposite support rods, each of the opposite support rod groups is composed of two support beams fixed as a whole with the middle part intersecting, the upper end of the two support beams is fixedly connected with the inner side wall of the support leg of the power transmission tower, and the lower end of the support beam is fixedly connected with the inner side wall of the lengthening support leg;

[0008] A plurality of connecting lock rods are arranged on the outer walls of the adjacent two lengthening support legs;

[0009] A plurality of support steel pipe piles are arranged on the bottom surface of each lengthening support leg, and a mortar pouring hole is formed in the top outer circumferential surface of the support steel pipe pile;

[0010] A verticality detection mechanism is further arranged on the bottom outer wall of one of the lengthened legs.

[0011] The technical problems solved by the utility model can also be solved by the following technical solutions.

[0012] The technical problems solved by the utility model can also be solved by the following technical solutions.

[0013] A horizontal support rod is horizontally bolted at one end to the outer wall of the lengthened leg.

[0014] A rope is fixed at its upper end to the bottom surface of the end of the horizontal support rod away from the lengthened leg.

[0015] A steel ball is fixed to the bottom end of the rope.

[0016] A vertical detection plate is vertically fixed to the bottom surface of the horizontal support rod.

[0017] Compared with the prior art, the utility model has the beneficial technical effects that:

[0018] (1) By arranging the opposite support rod set between the two adjacent lengthened legs and fixing the upper end of the support beam to the inner side wall of the leg of the power transmission tower and the lower end to the inner side wall of the lengthened leg, the overall rigidity and stability of the lengthened leg can be enhanced, and the inclination and sinking of the power transmission tower can be effectively prevented.

[0019] (2) The upper part and the lower part of the lengthened leg are provided with the connecting lock rod, so that the two adjacent lengthened legs can be reinforced, and the stability of the lengthened leg can be further enhanced.

[0020] (3) The support steel pipe pile is fixedly arranged on the bottom surface of the lengthened leg, and the top outer circumferential surface of the support steel pipe pile is provided with a mortar pouring hole, so that the mortar pouring hole can be used for grouting reinforcement, and the bearing capacity of the foundation can be further improved.

[0021] (4) The verticality precision detection mechanism is further arranged on the outer wall of the lengthened leg of the power transmission tower, and when the vertical detection plate is not parallel to the rope, i.e. a sharp angle or an obtuse angle is formed, it is determined that the power transmission tower is inclined, and the utility model has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the utility model.

[0023] Figure 2 It is a front view structural schematic diagram of the utility model. Figure 1 It is a front view structural schematic diagram of the utility model.

[0024] Fig. 1, lengthened leg; 2, leg; 3, support beam; 4, connecting lock rod; 5, support steel pipe pile; 6, mortar pouring hole; 7, horizontal support rod; 8, rope; 9, steel ball; 10, vertical detection plate. DETAILED DESCRIPTION

[0025] The specific technical scheme of the utility model is further described below with reference to the drawings, so as to further understand the utility model by those skilled in the art without limiting the rights thereof.

[0026] Embodiment 1, refer to Figures 1-2 A lengthened leg of a power transmission tower, comprising;

[0027] Four lengthened legs 1, the top end of the lengthened leg 1 is connected with the bottom end flange of the leg 2 of the power transmission tower, and each lengthened leg 1 is connected with one of the legs 2 of the power transmission tower;

[0028] A plurality of groups of opposite support rods, the number of groups can be four, and each of the opposite support rod groups is composed of two support beams 3 which are fixed as a whole at the middle part, the upper end of the two support beams 3 is fixedly connected with the inner side wall of the leg 2 of the power transmission tower, and the lower end of the support beam 3 is fixedly connected with the inner side wall of the lengthened leg 1, so as to strengthen the structural stability of the four lengthened legs 1;

[0029] A plurality of connecting lock rods 4, the connecting lock rod 4 is formed into a substantially cylindrical rod structure, which is arranged on the outer wall of the adjacent two lengthened legs 1, and the top and bottom outer walls of the lengthened leg 1 are provided with the connecting lock rod 4, so as to reinforce the adjacent two lengthened legs 1 and further strengthen the stability of the lengthened leg 1 as much as possible;

[0030] In order to maintain the structural stability of the power transmission tower as much as possible and reduce the sinking rate under the soft soil foundation, a plurality of support steel pipe piles 5 are additionally arranged, one of the support steel pipe piles 5 is fixedly arranged on the bottom surface of each lengthened leg 1, the top outer circumferential surface of the support steel pipe pile 5 is provided with a mortar pouring hole 6, the stability of the bottom of the power transmission tower is increased by the support steel pipe pile 5, and the inside of the support steel pipe pile 5 can be grouted through the mortar pouring hole 6, so as to maintain the inside solid, have a certain extrusion resistance, and the mortar can leak from the bottom end of the support steel pipe pile 5 to the bottom area of the support steel pipe pile 5, so as to strengthen the geology below the support steel pipe pile 5;

[0031] In order to facilitate personnel to observe the inclination condition of the power transmission tower, a verticality detection mechanism is further installed on the bottom outer wall of one of the lengthened legs 1, and the verticality detection mechanism comprises: a horizontal support rod 7 which is formed in a substantially square rod body structure, and one end of the horizontal support rod 7 is bolted horizontally on the outer wall of the lengthened leg 1; a rope 8, the upper end of the rope 8 is fixed on the bottom surface of the end of the horizontal support rod 7 which is away from the lengthened leg 1; a steel ball 9, the steel ball 9 is fixed on the bottom end of the rope 8; and a vertical detection plate 10 which is formed in a substantially square plate structure, and the vertical detection plate 10 is vertically fixed on the bottom surface of the horizontal support rod 7.

[0032] Under normal circumstances, the rope 8 which is in contact with the steel ball 9 and the vertical detection plate 10 are both in a vertical downward parallel state, when the power transmission tower is inclined, then the rope 8 and the vertical detection plate 10 will form an acute or obtuse angle, the angle can be directly observed, or manually close the rope 8 to the root of the vertical detection plate 10, that is, the top, at this time, whether the vertical edges of the rope 8 and the vertical detection plate 10 coincide can be directly observed, if not, it is determined that the current power transmission tower is inclined, and reinforcement work of the power transmission tower can be carried out;

[0033] A level can also be fixedly installed on the bottom outer wall of the lengthened leg 1 to assist in detecting the inclination state of the power transmission tower.

Claims

1. An extended support leg for a transmission tower, characterized in that: include; Four extended support legs, with the top of the extended support legs connected to the bottom flange of the support legs of the transmission tower; Several sets of opposing support rods are provided, with one set of the aforementioned opposing support rods between each pair of adjacent extended legs. Each set of the aforementioned opposing support rods consists of two support beams that are fixed together at the middle. The upper ends of the two support beams are fixedly connected to the inner wall of the leg of the transmission tower, and the lower ends of the support beams are fixedly connected to the inner wall of the extended leg. Several connecting locking rods are installed on the outer walls of two adjacent extended legs; Several supporting steel pipe piles, one of the supporting steel pipe piles is fixedly installed on the bottom surface of each of the extended legs, and mortar injection holes are opened on the top outer circumference of the supporting steel pipe piles. A verticality detection mechanism is also installed on the bottom outer wall of one of the extended legs.

2. The extended support leg of a transmission tower according to claim 1, characterized in that: The extended support leg has a connecting locking rod on its top and bottom outer walls.

3. The extended support leg of a transmission tower according to claim 1, characterized in that: The verticality detection mechanism includes: A horizontal support rod, one end of which is horizontally bolted to the outer wall of the extended support leg; The rope, with its upper end fixed to the bottom surface of the end of the horizontal support rod furthest from the extended outrigger; A steel ball, fixed to the bottom end of a rope; The vertical detection plate is fixed vertically to the bottom surface of the horizontal support rod.

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