CN204150970U - Seat ground self-balancing pole - Google Patents

Abstract

A ground self-balancing pole holding relates to a pole holding. At present, engineering in mountainous areas restricts the use of various types of poles and mobile cranes. The utility model includes a base located in the middle of the iron tower, a main rod, a transition section, a slewing assembly, a four-way section, a main mast, a rotating joint, four rocker arms connected with the four-way section, and a corresponding lifting system and a luffing system. The base, main rod, transition section, slewing assembly, four-way section, main mast, and rotating joint are arranged from bottom to top. Among the four rocker arms, two rocker arms are the main rocker arms, and the two rocker arms are auxiliary rocker arms. The main rocker arm is provided with a hoisting system and a luffing system, and the free end of the auxiliary rocker arm is provided with a balance rope connected to the tower leg on the ground of the iron tower; the main rod is provided with at least one waist ring, and a waist ring is provided There are four waist ring stay wires to be connected with the four main materials of the iron tower respectively. The technical solution does not need to be equipped with external stay wires for holding poles, which ensures safe hoisting in complex terrain, and is convenient for construction, transportation and assembly.

Description

self-balancing pole

technical field

The utility model relates to a holding pole.

Background technique

In recent years, domestic construction companies have developed various types of poles in combination with ultra-high voltage line projects such as the UHV AC test demonstration project and the Anhui-East Power Transmission demonstration project to meet the construction requirements of iron towers of different types and different terrains, especially In the first double-circuit full-steel UHV line project—the Anhui Electricity Transmission Demonstration Project, a large number of new-style tower poles with a degree of mechanization and technical level that have been greatly improved compared with the past have been developed, such as double-flat arm poles on the ground , Ground-mounted single boom pole, ground-mounted double rocker pole pole, etc., combined with terrain and traffic conditions, rationally configure and use mobile cranes to improve the efficiency of tower construction.

The North Zhejiang-Fuzhou UHV AC transmission line project is the third AC UHV line constructed in my country. For the first time, wine glass-shaped linear towers are used on a large scale. Some tower-shaped three-phase conductors are arranged in V-shaped hanging strings, which greatly The structure size of the tower head has been increased. The tower head of the wine glass tower has the characteristics of large opening, high window, long cross arm, and heavy weight. It is required that the supporting pole must have sufficient structural strength, lifting capacity and operating range. The characteristics of steep slopes, inconvenient traffic terrain and the proximity of individual towers to power lines also limit the setting of the outer stay wires of the poles, requiring the weight and overall dimensions of the structural components of the poles to be lighter. Taking the construction of the 11th bid of the Zhejiang Power Transmission and Transformation Engineering Company as an example, the 211 bases of the newly built iron towers are all angle steel towers, of which 150 bases are wine glass-shaped straight towers. Extremely difficult, the altitude is 500-1000m, and the slope of the mountain is mainly 30°-50°, the terrain is extremely steep; the wine glass-shaped straight tower has a total height of 61.8-103.8m and a weight of 80-188t; the straight-line tower has a long cross-arm length and a large tonnage. Among them, the total length of the ZBC2720M24 tower cross arm is 67.2m, the total weight of the cross arm is 48t, the weight of a single upper crank arm is 7.6t, and the weight of a single lower crank arm is 9.65t.

Various factors on the site of the project limit the use of ground-mounted double-flat-arm poles, ground-mounted single-arm poles, ground-mounted double-rocker poles and mobile cranes.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to perfect and improve the existing technical scheme, and to provide a ground-based self-balancing pole to ensure the safety of hoisting in complex terrain. For this reason, the utility model takes the following technical solutions.

The ground self-balancing pole holding pole is characterized in that it includes a base located in the middle of the iron tower, a main pole, a transition section, a slewing assembly, a four-way section, a main mast, a rotating joint, four rocker arms connected to the four-way section and corresponding lifting system and luffing system, the base, main rod, transition section, slewing assembly, four-way section, main mast, and rotating joint are arranged from bottom to top. Among the four rocker arms, two rocker arms are the main rocker arms, and two rocker arms are the main rocker arms. The two main rocker arms are opposite to each other, and the two auxiliary rocker arms are opposite to each other. The main rocker arm is equipped with a lifting system and a luffing system. When one main rocker is used as a lifting rocker, the other main rocker is used as a balance rocker arm, the free end of the auxiliary rocker arm is provided with a balance rope connected to the tower leg on the ground of the iron tower; the main rod is provided with at least one waist ring, and one waist ring is provided with four waist ring stay wires to connect with the iron tower respectively. The four main materials are connected.

As a further improvement and supplement to the above technical solution, the utility model also includes the following additional technical features.

The lifting block set uses 1 or 2 blocks to walk 4 ropes, the upper block pulley of the lifting block block is fixed on the free end of the rocker arm, and the lower block adopts the hook with its own pulley; the luffing block block uses 2 or 3 blocks There are 6 grinding ropes, all the blocks are suspended, and there is a safety wire rope; the grinding ropes for luffing and hoisting are all led down from the inside of the pole, and lead out from the transition section of the guide pulley below the two sections below the slewing assembly; The arm is provided with a wire rope to connect the free end of the rocker arm with the top of the pole.

When the four legs of the iron tower are arranged in a square shape, the waist ring is connected to the main material of the iron tower through shackles, waist ring pull wires, double hooks, and shackles; The waist ring is connected to the main material of the iron tower through a shackle, a waist ring pull wire, a lever hoist, and a shackle.

Anti-collision blocks are arranged on both sides of the main rocker arm.

The pole-holding uses motorized winches as the power system, including 2 sets of motorized winches for hoisting and 2 sets of motorized winches for luffing. The distance from the center of the tower is not less than 0.5 times the total height of the tower.

The main mast is provided with a moment difference limiter, and the moment difference limiter is located on the main rocker arm side, and the hoisting system is equipped with a single-ring type lifting limiter at the front of the hoisting rope end.

Beneficial effects: This technical solution does not need to set the outer stay wire of the pole, and adopts the method of lifting on one side and balancing on three sides to control the balance and stability of the pole, ensuring the safety of hoisting the curved arm and cross arm of the wine glass tower in complex terrain; and it is convenient for construction and transportation with assembly.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 1-1 shows the layout of the balance side of the main rocker arm when hoisting at a direction of 90 degrees.

Figure 1-2 is a diagram of the balance layout of the auxiliary rocker arm when hoisting at a direction of 90 degrees.

Figure 1-3 shows the layout of the balance side of the main rocker arm when hoisting at a direction of 45 degrees.

Figure 1-4 is a diagram of the balance layout of the auxiliary rocker arm when hoisting at a direction of 45 degrees.

Figure 1-5 shows the layout of the balance side of the main rocker arm when hoisting at a direction of 26.6 degrees.

Figure 1-6 is a balance layout diagram of the auxiliary rocker arm when hoisting at a direction of 26.6 degrees.

Fig. 2 is a structural schematic diagram of the jacking device of the present invention.

Fig. 3 is a schematic diagram of a connection structure of a waist ring of the present invention.

Fig. 4 is a schematic diagram of the installation structure of the torque difference limiter of the present invention.

In the figure: 1-base, 2-main pole, 3-transition section, 4-rotary assembly, 5-cross section, 6-main mast, 7-rotary joint, 8-main rocker arm, 9-luffing rope, 10-hook, 11-waist ring, 12-set frame, 13-underframe foundation, 14-base bottom block, 15-main material, 16-balance rope, 17-safety wire rope, 18-shackle, 19-hand Lever block; 20-torque difference limiter; 21-waist ring pull wire; 22-ground tower leg.

Detailed ways

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings of the description.

As shown in Figure 1, the utility model includes a base 1 located in the middle of the iron tower, a main pole 2, a transition section 3, a rotary assembly 4, a four-way section 5, a main mast 6, a rotating joint 7, and four-way sections connected to the four-way section 5. The rocker arm and the corresponding lifting system and luffing system, the base 1, the main pole 2, the transition section 3, the slewing assembly 4, the four-way section 5, the main mast 6, and the swivel joint 7 are arranged from bottom to top. The two rocker arms in the arm are the main rocker arms 8, the two rocker arms are auxiliary rocker arms, the two main rocker arms 8 are opposite, and the two auxiliary rocker arms are opposite. When the main rocker arm 8 is used as a lifting rocker arm, the other main rocker arm 8 is used as a balance rocker arm, and the free end of the auxiliary rocker arm is provided with a balance rope 16 connected to the tower leg 22 on the ground of the iron tower; At least one waist ring 11 is provided on the top, and one waist ring 11 is provided with four waist ring stay wires 21 to be respectively connected with the four main materials 15 of the iron tower. The root section of the rocker arm is connected with the four-way section 5 with a through-type shaft pin, so as to be assembled.

The 8 hoisting blocks of the main rocker arm use 1-2 blocks to wear 4 ropes. The upper block pulley of the lifting block block is fixed on the top of the rocker arm, and the lower block uses the hook 10 with its own pulley; the luffing block uses 2-3 blocks The group walks 6 grinding ropes, and the two blocks all adopt the suspension type, and a φ26 safety wire rope 17 is set in addition. Both the luffing and hoisting grinding ropes use φ15 steel wire ropes; the luffing and hoisting grinding ropes are all led down from the inside of the pole, and are led out from the transition section 3 of the guide pulley below the two sections 2m below the slewing assembly 4. The auxiliary rocker arm has no luffing system, only one φ26 steel wire rope is used to connect the head of the rocker arm to the top of the pole, and the lifting system is anchored to the tower leg 22 on the ground by three φ15 steel wire ropes.

The main rocker arm 8 on the pole is located in the direction of 90° for hoisting operations, such as horizontal iron, tower piece or ground wire top frame, cross arm, the ribs at the foot of the tower foot of the hoisting block of the main rocker arm 8 on the opposite side and the auxiliary rocker arms on both sides The plate holes are connected, the balance side layout of the main rocker arm 8 is shown in Figure 1-1, and the balance layout of the auxiliary rocker arm is shown in Figure 1-2.

The pole-holding main rocker arm 8 is located in the direction of 45° for hoisting operations. For example, when the main material of the tower leg is 15, the hoisting blocks of the main rocker arm 8 on the opposite side and the lifting blocks of the auxiliary rocker arms on both sides are fixed on the tower hamstring plate, and the main rocker arm 8 The layout of the balance side is shown in Figure 1-3, and the balance layout of the auxiliary rocker arm is shown in Figure 1-4.

The main rocker arm 8 on the pole is located in the direction of 26.6° for hoisting operations. For example, in the case of large inclined iron, the main rocker arm 8 on the opposite side and the hoisting blocks of the auxiliary rocker arms on both sides are connected to the rib plate holes at the tower feet of the hoisting blocks. The balance side of the main rocker arm 8 is The layout is shown in Figure 1-5, and the balance layout of the auxiliary rocker arm is shown in Figure 1-6.

The pole-holding waist ring 11 at the tower body is set according to 50kN, and four waist ring stays 21 are arranged in a 45° direction. 18→Main material 15 of the iron tower. When the four legs of the iron tower are arranged in a rectangular shape, as shown in Figure 3, the waist ring pull wire 21 is laid in a crossing manner, and the crossing arrangement is shown in Figure 3, the connection method; waist ring 11→BW9.5 shackle 18→φ21.5 Waist ring cable 21→90kN lever hoist 19→BW9.5 shackle 18→main material of iron tower 15.

In order to improve safety, the main mast 6 is provided with a moment difference limiter 20, as shown in Figure 4, the moment difference limiter 20 is located on the side of the main rocker arm 8, and the hoisting system lifts and winches the end of the rope There is a single-ring lift limiter at the front.

The installation method of the ground self-balancing pole includes the following steps:

1) Base 1 installation

Level the area of 2.5×2.5m in the center of the iron tower, place the base 1 directly in the center of the iron tower by means of human lifting, and anchor and tighten on the four sides of the foundation;

2) Standard section and transition section 3 body section installation

A) Root 3m straight section installation

The first straight section at the root of the pole is manually lifted and installed. First, the pole-holding base 1 is placed at the center of the foundation according to the basic orientation of the line, and then the first straight section is manually lifted and installed on the base 1;

B) Installation of the middle straight section and the transition section 3: this section is hoisted in sections using steel pipes and single wooden poles;

a) Standing with the pole: the steel pipe pole is manually erected on the ground and leaned against the outside of the straight section of the ground pole that has been installed in place, and the head of the steel pipe is equipped with a lifting block, a lifting wire rope and four outer wire ropes to lift the block and the outer guy wires are respectively fixed in the reserved holes on the top of the steel pipe, and the bottom of the steel pipe and 2m away from the bottom are respectively tied with supporting wire sleeves.

b) Pole lifting: first set a guide block on the top of the 3m straight section, and at the same time set a steel wire sleeve on the upper end of the straight section to tie the angle steel of the pole with the surrounding of the pole as a hoop for hoisting, and then lock one end of the hoisting wire rope On the lifting plate of the holding rod, the other end is led to the motorized winch mill through the guide block. During the lifting process of the holding rod, the outer pull wire is used to adjust the uprightness of the holding rod, so that the steel pipe holding rod is lifted to the hoisting position along the straight section of the main steel, even if the steel pipe holding the rod 6m higher than the connecting plane of the straight section. After lifting in place, tie the bottom of the steel pipe holding pole to the leading steel of the straight section with a supporting wire rope, and remove the waist hoop wire sleeve and lifting steel rope;

C) Hoisting: After the pole is lifted to the hoisting position, the standard section straight section can be hoisted; when hoisting, the outer pull wire is used, and the angle of the outer pull wire to the ground is arranged at 45°;

D) Laying of the inner stay wire on the pole: After the hoisting of the slewing assembly 4 is completed, the inner stay wire is laid in the 45° direction of the lower part of the slewing assembly 4, and the angle between the inner stay wire and the ground is ≤ 60°;

E) After the inner cable is laid, continue to hoist the four-way section 5 and the mast section; only hoist one section of the main pole 2 at a time;

3) Removal of the steel pipe holding pole

After the hoisting of the main pole 2 of the holding pole is completed, the steel pipe holding pole can be removed; the removal of the holding pole is carried out according to the reverse procedure of lifting. Firstly, the steel pipe is held by the pole for 7m, that is, the head is lowered to 1m below the top of the pole. At this time, the lifting end of the hoisting wire rope is moved from the root of the pole to the top, and the other end enters the winch through the top and the ground guide block;

4) Hoisting of the rocker arm

The four rocker arms are formed as a whole on the ground, and are hoisted by using the assembled pole main pole 2;

Hang a heavy block on the top of the main pole 2 of the holding pole, one end of the hoisting grinding rope is locked on the top of the rocker arm, and the other end passes through the top of the holding pole and the ground guide block to enter the winch, and the rocker arm is hoisted in place with the winch;

After the rocker arm hoisting was completed, luffing, hoisting system and safety rope were installed to the main rocker arm 8, and the rocker arm was leveled, and the balance rope 16 was installed to the auxiliary rocker arm.

The lifting of the pole adopts the method of hydraulic jacking and heightening; the lifting device of the pole is shown in Figure 2, including the base block 14, the base frame foundation 13, and the sleeve frame 12. The base block 14 is located at the bottom end, and there is a bottom Frame foundation 13, the bottom frame foundation top is sleeve frame 12.

1) Before the jacking starts, the pull wires of the jacking frame 12 need to be laid, and the ladder and the required platforms are installed on the standard sections to be lifted, one platform for every four sections;

2) Remove the connecting bolt group between the tower body and the standard section base 1 on the base 13, and remove the bottom beam of the sleeve frame 12;

3) Shake the wrench lever of the jacking platform, so that the 12 climbing claws of the sleeve frame are close to the main chord of the standard section, and start to lift the cylinder after it is in place. During the process of jacking the cylinder, ensure that the gap between the guide roller and the tower body is within 2mm or more;

4) Stop after jacking up for a certain distance, and remove the four standard section bases 1 on the underframe foundation 13;

5) Install the imported components and connect them with the underframe foundation 13 with bolts;

6) Hoist the standard section, use manpower to lift the standard section to the roller structure of the introduction beam, and connect it with a pin shaft, start lifting and heightening, extend the oil cylinder until the lifting surface of the climbing claw and the stepping lifting surface on the standard section Fitting, pull the rocker to disengage it from the main chord step of the standard section, and continue to lift until the cylinder is fully extended;

7) Then shake the rocker to make it close to the main chord step of the standard section; start retracting the oil cylinder after it is in place, so that the top surface of the rocker and the lifting surface of the step are completely attached, and then lift the wrench lever on the jacking platform Shake down to make the climbing claw leave the main chord rod of the standard section; fix the wrench rod, and then continue to fully retract the cylinder;

8) After the oil cylinder is fully retracted, shake the wrench lever so that the 12 climbing claws of the sleeve frame are close to the main chord of the standard section;

9) Go back to step 7 and repeat the operation until the oil cylinder completes a total of three jacking strokes. After the third jacking, the oil cylinder does not retract and remains fully extended;

10) Advance the standard section on the introduction beam, retract the oil cylinder after it is in place, until the distance between the lower end surface of the tower body standard section and the upper end surface of the imported standard section is 1 cm -3cm, stop the cylinder action; use the bolt group to insert the standard section on the beam The joint is connected with the above standard joint, then the oil cylinder is jacked up, and the roller structure on the imported standard joint is removed; then the oil cylinder is retracted according to step 8, and the process of installing a standard joint is completed;

11) Continue to lift according to the previous steps until all the standard sections to be introduced are installed, and finally remove the introduction beam, replace the standard section base 1, retract the oil cylinder, make the entire tower fall on the standard section base 1, and fasten it The bolts of the standard section base 1 and the tower body are installed, and the bottom beam of the sleeve frame 12 is installed; so far, a jacking operation process is completely completed.

Before lifting the self-balancing pole on the ground, use the waist ring 11 to straighten the pole body, lay the four rockers flat, seal the two auxiliary rockers with the balance rope 16, and lift the lifting rope and the luffing arm on the opposite side. Lead the tail ropes of the rope 9 to the winch and seal them tightly, and then use the winch to slowly tighten the luffing rope 9 on the opposite side of the hoisting, so that the pole is pre-tilted 10cm to 20cm toward the opposite side of the hoisting; after hoisting, as the hoisting force continues to increase, The luffing rope 9 on the opposite side for lifting should be continuously tightened accordingly to ensure that the inclination of the top of the pole is controlled within 10-20 cm.

The ground self-balancing holding pole shown in Figures 1-4 above is a specific embodiment of the utility model, which has already reflected the substantive features and progress of the utility model, and can be used according to actual needs, under the inspiration of the utility model, Equivalent modification of its shape, structure and other aspects are all within the scope of protection of this scheme.

Claims (6)

1. a ground self-balancing pole, it is characterized in that: comprise the base (1) be positioned in the middle of steel tower, mobile jib (2), transition phase (3), gyro black assembly (4), four-way section (5), main leg (6), rotate joint (7), four rocking arms be connected with four-way section (5) and corresponding tackling system, changing-breadth system, described base (1), mobile jib (2), transition phase (3), gyro black assembly (4), four-way section (5), main leg (6), rotate joint (7) to arrange from bottom to top, in four rocking arms, two rocking arms are master rocker (8), two rocking arms are secondary-rocker, two master rockers (8) are relative, two secondary-rockers are relative, described master rocker (8) is provided with tackling system and changing-breadth system, when a master rocker (8) is as lifting rocking arm, another master rocker (8) is as balancing rocker arm, the free end of described secondary-rocker is provided with the balance rope (16) be connected with steel tower ground tower leg (22), described mobile jib (2) is provided with at least one girdle ring (11), and a girdle ring (11) is provided with four girdle ring bracing wires (21) to be connected with four main materials (15) of steel tower respectively.

2. seat ground according to claim 1 self-balancing pole, is characterized in that: described lifting polyspast adopts 1 or 2 coaster to walk 4 road mill ropes, and lifting polyspast upper pulley pulley is fixed on rocking arm free end, and lower block adopts suspension hook (10) to carry pulley; Luffing polyspast adopts 2 or 3 coasters to walk 6 road mill ropes, and coaster all adopts suspension type, and is provided with an insurance steel cable (17); Luffing, lifting mill rope all from pole inside is drawn, from leading sheave transition phase (3) extraction below gyro black assembly (4) following two segment; Secondary-rocker is provided with a steel rope and is connected with pole top by rocking arm free end.

3. seat ground according to claim 2 self-balancing pole, it is characterized in that: when steel tower four pin is arranged in squares, described girdle ring (11) is connected with iron tower main material (15) by shackle (18), girdle ring bracing wire (21), double hook, shackle (18); When steel tower four pin is rectangle layout, girdle ring (11) wiring adopts interleaved mode between two, and described girdle ring (11) is connected with iron tower main material (15) by shackle (18), girdle ring bracing wire (21), Lever Blocks (19), shackle (18).

4., according to the seat ground self-balancing pole that claim 3 is stated, it is characterized in that: the both sides of master rocker (8) are provided with anticollison block.

5. seat ground according to claim 4 self-balancing pole, it is characterized in that: pole is using motor-driven grinding mill as power system, comprise 2 cover lifting motor-driven grinding mills, and 2 overlap luffing motor-driven grinding mill, if the platform of motor-driven line mill is positioned at tower body component pair hang side and non-cross-arm integral hoisting side, be not less than 0.5 times of tower overall height with steel tower central task distance.

6. seat ground according to claim 5 self-balancing pole, it is characterized in that: described main leg (6) is provided with torque difference killer (20), described torque difference killer (20) is positioned at establishes master rocker (8) side, and tackling system lifting strand grinds end front portion and is provided with monocyclic lifting limiter.