Floor double-rocker-arm derrick overturn-preventing slewing device

Abstract

The utility model belongs to the field of extra-high voltage power transmission construction tower assembling, and particularly relates to a floor double-rocker-arm derrick overturn-preventing slewing device, an upper seat part and a lower seat part are connected through a slewing support, the upper seat part comprises four support lugs, an upper seat and a disc-shaped cylinder, the upper seat is connected with the upper seat through the slewing support, and the disc-shaped cylinder is connected with the lower seat through the upper seat. The four supporting lugs are evenly distributed on the front side face and the rear side face of the upper base, the disc-shaped barrel is fixedly installed at the lower end of the upper base and connected with the slewing bearing, when abnormal unbalanced bias load occurs, transverse force deviating to the vertical direction occurs on the supporting lugs and the upper base, and when the transverse overturning force exceeds the load capable of being borne by the slewing bearing, the supporting lugs and the upper base are overturned by the upper base and the slewing bearing. The disc-shaped cylinder transmits bias force to the base section and the limiting wheel, the base section bears overturning force, the situation that under the abnormal transverse overturning force, after the slewing bearing is damaged, the whole upper base composed of the supporting lug, the upper base, the disc-shaped cylinder and the slewing bearing overturns is avoided, and serious unsafe events are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of pole tower assembly for ultra-high voltage power transmission construction, and in particular relates to a ground-mounted double-rocker arm pole-holding anti-overturning rotation device. Background Art

[0002] With the increasing number of UHV lines built by the State Grid, the cross-sectional area of ​​the conductors is increasing, and the steel pipe towers and spanning towers used in the lines are increasing. Most of them are located in mountains and ridges. The towers are about 98 to 137.3 meters, the root distance is increasing, the weight of the towers is large, the single piece is large and heavy, and the cross arm length is long. The large root opening, high appearance, long cross arm and heavy tower materials of the UHV towers have brought a series of difficulties to the construction units when assembling the towers. The construction environment is becoming increasingly harsh. The operations in mountainous areas, hills, plateaus and uninhabited areas are difficult to transport and assemble, which puts higher requirements on the poles used for construction tower assembly. The ground-type double rocker arm poles currently used in tower assembly are highly safe, but they have the disadvantages of large footprint, large weight, high price, and large assembly and disassembly workload. The existing ground-type double rocker arm pole slewing device is very easy to overturn under abnormal loads, resulting in great safety risks. Utility Model Content

[0003] The utility model aims to provide a ground-mounted double rocker arm anti-overturning rotation device to solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned purpose, the specific technical scheme of a ground-mounted double rocker arm anti-overturning rotation device of the utility model is as follows:

[0005] A ground-mounted double rocker arm anti-overturning swivel device comprises an upper seat component and a lower seat component, wherein the upper seat component and the lower seat component are connected via a swivel bearing.

[0006] Furthermore, the upper seat component includes a support ear, an upper seat and a disc-shaped tube. There are four support ears, which are evenly distributed on the front and rear sides of the upper seat. A disc-shaped tube is fixedly installed on the lower end of the upper seat, and the disc-shaped tube is connected to the slewing bearing.

[0007] Furthermore, the lower seat component includes a base, a base section and a limiting wheel. The base is fixedly mounted on one end of the base section, and the limiting wheel is fixedly mounted on the other end of the base section, and a plurality of limiting wheels are provided.

[0008] Furthermore, the plurality of limiting wheels are specifically provided in four numbers.

[0009] The advantages of the utility model are:

[0010] During normal use, the lower seat component is fixed and the upper seat component rotates normally during use. The upper seat component composed of the support ear, the upper seat, the disc-shaped cylinder, and the slewing bearing has a balanced load force in the left and right arrangement formed by the four support ears. The upper seat component composed of the support ear, the upper seat, the disc-shaped cylinder, and the slewing bearing is in a balanced normal use state, and transmits the vertical force to the lower seat component assembled by the base, the base section, and the limiting wheel; when abnormal unbalanced load occurs: when abnormal unbalanced offset load occurs, a lateral force biased toward the vertical direction appears on the support ear and the upper seat. When this lateral overturning force exceeds the load that the slewing bearing can withstand, the upper seat and the disc-shaped cylinder transmit the biasing force to the base section and the limiting wheel, and the overturning force is borne by the base section, thereby preventing the slewing bearing from being destroyed under the abnormal lateral overturning force, resulting in the overall overturning of the upper seat composed of the support ear, the upper seat, the disc-shaped cylinder, and the slewing bearing, thereby preventing the occurrence of serious unsafe incidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 for Figure 1 Schematic diagram of the cutting line position;

[0013] Figure 3 for Figure 2 Cross-sectional view along section AA;

[0014] Figure 4 for Figure 2 Cross-sectional view along section BB;

[0015] Figure 5 for Figure 1 Exploded diagram of the structure;

[0016] Markings in the figure are as follows: support ear 1; upper seat 2; disc-shaped cylinder 3; slewing bearing 4; base 5; base section 6; limiting wheel 7. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] Example 1

[0020] like Figure 1-5 As shown, a ground-mounted double rocker arm anti-overturning rotation device includes an upper seat component and a lower seat component, and the upper seat component and the lower seat component are connected through a rotation support 4.

[0021] Example 2

[0022] like Figure 1-4 As shown, the upper seat component includes a support ear 1, an upper seat 2 and a disc-shaped tube 3. Four support ears 1 are provided, and the four support ears 1 are evenly distributed on the front and rear sides of the upper seat 2. The disc-shaped tube 3 is fixedly installed on the lower end of the upper seat 2, and the disc-shaped tube 3 is connected to the slewing bearing 4.

[0023] Example 3

[0024] like Figure 1-4 As shown, the lower seat component includes a base 5, a base section 6 and a limiting wheel 7. The base 5 is fixedly mounted on one end of the base section 6, and the limiting wheel 7 is fixedly mounted on the other end of the base section 6, and a plurality of limiting wheels 7 are provided;

[0025] Among them, the plurality of limiting wheels 7 are specifically arranged in four. With such an arrangement, when in normal use, the lower seat component is fixed, and the upper seat component rotates normally during use. The upper seat component composed of the support ear 1, the upper seat 2, the disc-shaped tube 3, and the slewing bearing 4 has a balanced load force in the left-right arrangement formed by the four support ears 1. The upper seat component composed of the support ear 1, the upper seat 2, the disc-shaped tube 3, and the slewing bearing 4 is in a balanced normal use state and transmits the vertical force to the lower seat component assembled by the base 5, the base section 5, and the limiting wheel 7; abnormality is not When the balanced load occurs: When an abnormal unbalanced offset load occurs, a lateral force biased toward the vertical direction appears on the support ear 1 and the upper seat 2. When this lateral overturning force exceeds the load that the slewing bearing 4 can withstand, the upper seat 2 and the disc-shaped tube 3 transfer the biasing force to the base section 5 and the limiting wheel 7, and the base section 5 bears the overturning force, thereby preventing the slewing bearing 4 from being destroyed under the abnormal lateral overturning force, resulting in the overall overturning of the upper seat composed of the support ear 1, the upper seat 2, the disc-shaped tube 3 and the slewing bearing 4, thereby preventing the occurrence of serious unsafe incidents.

[0026] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A ground-mounted double rocker arm anti-overturning rotation device, characterized in that: It comprises an upper seat component and a lower seat component, wherein the upper seat component and the lower seat component are connected via a slewing support (4); The upper seat component comprises a support ear (1), an upper seat (2) and a disc-shaped tube (3), wherein four support ears (1) are provided, and the four support ears (1) are evenly distributed on the front and rear sides of the upper seat (2), and a disc-shaped tube (3) is fixedly mounted on the lower end of the upper seat (2), and the disc-shaped tube (3) is connected to the slewing support (4); The lower seat component comprises a base (5), a base section (6) and a limiting wheel (7), wherein the base (5) is fixedly mounted on one end of the base section (6), and the limiting wheel (7) is fixedly mounted on the other end of the base section (6), and a plurality of limiting wheels (7) are provided; Specifically, four of the plurality of limiting wheels (7) are provided.

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