CN102633195B - Self-balancing amplitude modulation holding pole - Google Patents

Abstract

The invention relates to a self-balancing amplitude modulation holding pole which comprises a main holding pole, a suspension arm, a first amplitude modulation pulley, a second amplitude modulation pulley, an amplitude modulation tackle, an amplitude modulation rope and a lifting rope, wherein the suspension arm, the first amplitude modulation pulley, the second amplitude modulation pulley, the amplitude modulation tackle and the amplitude modulation rope are symmetrically arranged relatively to the main holding pole; and the stress points of the lifting rope on the amplitude modulation holding pole are symmetrical relatively to the main holding pole. Compared with the prior art, the self-balancing amplitude modulation holding pole realizes self-balancing stress of weights arranged on the two sides relatively to the holding pole, and reduces the requirement on the strength of the main holding pole and the suspension arm, thus reducing the structural size and the weight of the main holding pole and the suspension arm on the whole, and being convenient in transportation, installation and disassembly, low in cost and beneficial to popularization and application.

Description

A self-balancing amplitude modulation pole

technical field

The invention belongs to the technical field of electric power construction equipment, and in particular relates to a power transmission line tower construction device.

Background technique

With the construction of UHV, compared with ordinary 500kV line towers, UHV line towers are taller, larger, and heavier. The construction of iron towers is very difficult, especially the hoisting radius is large. Continue to use The traditional internal suspension pole group tower has low construction efficiency and high safety risks. In order to improve efficiency and safety, many construction units have successively developed double-flat arm poles (CN200920200519.9), double-flat arm base ground poles (CN200720085113.1), double-rocker poles (CN200920114311.5), tower Construction methods such as hoisting and grouping towers by type cranes. However, due to the large number of components and large structural size, the above-mentioned pole-holding equipment has problems such as unit weight and total weight, inconvenient transportation and use on the construction site, and high cost of purchase and transportation. The hanger control wind rope and the structure size of the existing flat arm pole or tower crane are too large to be transported to the tower position and cannot be used. In addition, for flat-arm pole and tower cranes, the amplitude range covered by the hook is adjusted by the reciprocating operation of the trolley on the boom. When the trolley is loaded, a large bending moment is formed on the boom. The structural strength requirements of the boom are high; for the rocker arm, the range of hook coverage is adjusted through the rotation of the rocker arm. During the rotation process, the force state of the boom changes frequently, which also affects the structural strength of the boom High standard.

Contents of the invention

In view of this, the object of the present invention is to provide a steel tower assembly with large operating radius, self-balanced system force, high safety, simple and reasonable amplitude modulation mechanism, less required supporting equipment, small structural size and weight, and convenient transportation, installation and use. The construction device is a self-balancing amplitude modulation pole.

In order to solve the above-mentioned technical problems, the technical solution provided by the present invention is to provide a self-balancing amplitude-modulating pole, in which booms are symmetrically arranged on both sides of the main pole at the upper middle position, and a claw arm assembly is installed on the top of the main pole. There are two pulleys on the top of the claw arm assembly, a fixed pulley is installed on the upper right side of the main pole, and the first amplitude modulation pulley is symmetrically installed on the main pole below the fixed tackle; the boom is hinged on the main pole, and the outside of the boom The second amplitude modulation block is installed at the end; the upper end of the boom assembly is connected to the upper part of the main pole, and the lower end is connected to the outer end of the boom; Set symmetrically with respect to the left and right sides of the main pole: the right amplitude modulation rope passes upward through the main pole, bypasses the first right amplitude modulation pulley, the second right amplitude modulation pulley, and the first pulley of the amplitude modulation pulley in turn, and finally is fixedly connected to the On the shell of the second amplitude modulation pulley, the above amplitude modulation pulley is located below the second amplitude modulation pulley; one end of the lifting rope is fixed on the left upper end of the main pole, and the other end of the lifting rope bypasses the third pulley of the left amplitude modulation pulley in turn to hang heavy objects The lifting block of the left AM block, the second pulley of the left AM block, the top pulley of the claw arm assembly, the second pulley of the right AM block, the lifting block of the hanging heavy object, the third pulley of the right AM block, the fixed block, and finally Lifting device attached to the ground. Advantageously, through the symmetrical arrangement of the above-mentioned components, the stress points of the main pole and the boom are symmetrical to the left and right of the center line of the main pole, and the setting method of the lifting rope and the banner rope can realize the adjustment of the coverage range of the hook. The inward amplitude adjustment is realized by the component force in the horizontal direction generated by the gravity of the lifting weight, and the outward amplitude adjustment requires the help of external force, which is realized by pulling the movable pulley downwards from the ground force application device.

After the tower assembly operation is completed, the boom is rotated upwards and fixed to the main pole, and the whole device is lowered from the inside of the tower to the ground, making the disassembly operation safer.

The heavy objects on both sides of the main pole are taken off and landed by a lifting rope, and the luffing is done by a luffing rope to complete the lifting and luffing actions. The force points of the lifting rope and the luffing rope on the main pole and the boom are symmetrical, and the position of the weight relative to the main pole is always kept symmetrical, so as to realize the self-balancing force of the heavy objects on both sides on the pole and reduce the impact on the pole. The strength requirements of the main pole, so as to achieve the purpose of reducing the structure size and weight.

In this device, the boom acts as a supporting rod, providing a fulcrum for lifting and amplitude modulation. The boom has no additional bending moment except for the bending moment generated by its own weight. Compared with the booms with trolley amplitude modulation and rocker amplitude modulation, the strength requirements of the boom are lower, thereby reducing the structural size and weight of the boom. The trolley in the prior art is not used, and it is avoided that the trolley exerts a pressure perpendicular to the center of the earth on the boom when the trolley is running on the boom. This pressure is limited to the weight of the lifting weight and requires the boom to have a higher structure strength.

The inner end of the boom is equipped with a boom base, and the boom base is provided with boom lugs in the middle of the bottom plate of the boom; a connecting base is installed in the upper part of the main pole, and the structure of the connecting base is: There are four installation holes corresponding to the main pole of the main pole on the main board of the connecting base, and the base lugs are symmetrically arranged on the left and right sides of the above main board; the boom lugs are hinged with the base lugs.

The boom is composed of several boom lattice sections connected by bolts, and the boom composite beam is installed at the outer end of the boom; the cross section of the boom lattice section is square, and the four main materials are respectively located at the four corners of the square. Above, the main materials are welded and fixed by several oblique materials, and the two ends of each main material are respectively welded with gaskets, and the adjacent two gaskets are connected by flange angle steel. When the boom lattice section is long enough, the welded cross bracing in the middle of the boom lattice section can strengthen the strength of the boom lattice section.

Further, the composite beam of the boom is provided with a pair of first lugs of the composite beam on the upper part of one side of the main board of the composite beam, and a second lug of the composite beam is provided in the middle of the other side, and the first lug of the composite beam is connected with the suspension The lower end of the rod assembly is hinged, and the second lug of the composite beam is hinged to the second amplitude modulation block.

The structure of the boom assembly is as follows: turnbuckle bolts are arranged between the boom and the extension rod of the boom assembly. Advantageously, the turnbuckle on the boom assembly is used for fine-tuning the length of the boom assembly, so as to achieve the purpose of adjusting the angle between the boom and the horizontal plane.

The installation position of the first amplitude modulation pulley at the upper end of the main pole is horizontally installed with a suspender pendant. The structure of the suspender pendant is as follows: four installation holes corresponding to the main pipe of the main pole are arranged on the bottom plate of the pendant. There are hanger lugs; the first amplitude modulation pulley and the upper end of the suspender assembly are hinged to the hanger lugs.

Usually, the main pole is connected by a plurality of lattice sections, and the suspension rod hanger and the connecting base are installed at the connection between the lattice sections. Preferably, the main pole is a circular tube type inner suspension pole. The circular tube type inner suspension pole is the device described in Chinese patent 200910058946.2.

Description of drawings

Figure 1-1 is an overall schematic diagram of the self-balancing AM pole.

Figure 1-2 is a partially enlarged view of the balanced amplitude modulation pole A shown in Figure 1-1.

Fig. 2 is a schematic diagram of the right part of the balanced AM pole shown in Fig. 1-1.

Figure 3-1 is a schematic diagram of the setting of the automatic balance amplitude modulation pole lifting rope and amplitude modulation rope.

Fig. 3-2 is an enlarged schematic diagram of the upper part of the automatic balance amplitude modulation hoisting rope and the amplitude modulation rope setting shown in Fig. 3-1.

Figure 4-1 is a schematic diagram of the installation of the self-balancing amplitude modulation boom.

Figure 4-2 is a partial enlarged view of B shown in Figure 4-1.

Figure 5-1 is the front view of the boom lattice section.

Figure 5-2 is a bottom view of the boom lattice section shown in Figure 5-1.

Fig. 5-3 is a right view of the boom lattice section shown in Fig. 5-1.

Figure 5-4 is a partial enlarged view of C shown in Figure 5-3.

Figure 6-1 is the front view of the boom base.

Figure 6-2 is a top view of the boom base shown in Figure 6-1.

Figure 7-1 is the front view of the boom combination.

Figure 7-2 is a bottom view of the boom composite beam shown in Figure 7-1.

Figure 7-3 is a left view of the boom composite beam shown in Figure 7-1.

Figure 8-1 is the front view of the connection base.

Figure 8-2 is a top view of the connection base shown in Figure 8-1.

Fig. 9 is a schematic diagram of the structure of the boom assembly.

Figure 10-1 is the front view of the suspension rod pendant.

Figure 10-2 is a top view of the hanger.

Figure 11-1 is the front view of the AM block.

Fig. 11-2 is a top partial sectional view of the amplitude modulation tackle shown in Fig. 11-1.

Detailed ways

The following will be described in conjunction with the accompanying drawings and specific embodiments.

Figure 1-1 shows an overall example of a self-balancing AM pole. Referring to Figure 1-1 to Figure 3-2, the main pole 1 is a circular tube type inner suspension pole, and the main pole is composed of multi-section lattice sections connected by bolts, as described in Chinese patent 200910058946.2. Booms 2 are symmetrically arranged on both sides of the upper and middle positions of the main pole 1 , and a claw arm assembly 101 is installed on the top of the main pole. Two pulleys are arranged on the top of the claw arm assembly 101 . A fixed block 901 is installed on the upper right side of the main pole 1, and the first amplitude modulation pulleys 902a and 902b are symmetrically installed on the main pole 1 below the fixed block 901; the boom 2 is hinged on the main pole, and the outer end of the boom 2 The second amplitude modulation block 903a, 903b is installed; The amplitude modulation rope 8 bypasses the movable pulley 905 in the main pole 1, and is connected with the ground force device by the tension rope. The amplitude modulation rope 8 is arranged symmetrically with respect to the left and right sides of the main pole 1: the right amplitude modulation rope passes through the main pole 1 upwards , bypass the first pulley 301 of the first amplitude modulation pulley 902a on the right side, the second amplitude modulation pulley 903a on the right side, and the amplitude modulation pulley 3 in turn, and finally be fixedly connected to the housing of the second amplitude modulation pulley 903a, and the above amplitude modulation pulley 3 is located at the second Below the amplitude modulation pulley, the amplitude modulation block is shown in Figures 11-1 to 11-2; one end of the lifting rope 7 is fixed on the upper left side of the main pole 1, and the other end of the lifting rope 7 bypasses the third pulley 303 of the left amplitude modulation block in turn , the second pulley 302 of the hoisting block 904b of the hanging weight, the left side amplitude modulation block 3, the top pulley of the claw arm assembly 101, the second pulley 302 of the right side amplitude modulation block, the lifting block 904a of the hanging weight, the right side amplitude modulation The third pulley 303 of the tackle, the fixed tackle 901, and finally the hoisting device connected to the ground.

Referring to Fig. 4-1, Fig. 6-1 and Fig. 6-2, a boom base 220 is installed at the inner end of the boom 2, and the boom base 220 is provided with a boom lug 222 in the middle of its bottom plate 221 . A connecting base 6 is installed between the two lattice sections in the upper part of the main pole 1. The structure of the connecting base 6 is as follows: four installation holes corresponding to the main pipe of the main pole are arranged on the main board 601 of the connecting base. Base lugs 602 are arranged symmetrically on both sides, as shown in Fig. 8-1 and Fig. 8-2. The boom ear 222 is hinged to the base ear 602 .

Referring to Fig. 4-1 to Fig. 5-4, the boom 2 is composed of several boom lattice sections 210 connected by bolts, and a boom composite beam 230 is installed at the outer end of the boom 2; The cross-section is square, and the four main materials 211 are respectively located on the four corners of the square. The main materials 211 are welded and fixed by several oblique materials 212. The two ends of each main material are respectively welded with gaskets 213, and the adjacent two gaskets are formed by Flange angle steel 214 connection.

Referring to Fig. 7-1 to Fig. 7-3, the structure of the boom composite beam 230 is as follows: a pair of composite beam first lugs 232 are provided on one side of the composite beam main board 231, and a composite beam second ear is provided in the middle of the other side. piece 233, the first ear piece 232 of the composite beam is hinged to the lower end of the boom assembly 4, and the second ear piece 233 of the composite beam is hinged to the second amplitude modulation tackle 903a, 903b.

Referring to FIG. 9 , the structure of the boom assembly 4 is: a turnbuckle 402 is arranged between the boom 401 and the extension rod 403 of the boom assembly 4 . Turnbuckle 402 is used to fine-tune the length of the boom assembly.

The upper end of the main pole 1 is horizontally installed between the first and second lattice sections from top to bottom, which is the installation position of the first amplitude modulation pulleys 902a and 902b. The structure of the suspension rod is as follows: 501 is provided with four mounting holes corresponding to the main pole of the main pole, and hanger ear pieces 502 are provided on the left and right sides of the hanger bottom plate 501, as shown in Figure 10-1 and Figure 10-2. The first amplitude modulation pulleys 902a, 902b and the upper end of the boom assembly 4 are hinged to the hanger lug 502 .

The above are only preferred implementations of the present invention, and it should be noted that the above preferred implementations should not be regarded as limiting the present invention, and the scope of protection of the present invention should be based on the scope defined in the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (7)

1. A self-balancing amplitude modulation pole, in which booms (2) are symmetrically arranged on both sides of the main pole (1) in the middle and upper position, and a claw arm assembly (101) is installed on the top of the main pole (1), and the claw arm assembly ( 101) There are two pulleys on the top, which is characterized in that a fixed pulley (901) is installed on the upper right side of the main pole (1), and a first Amplitude modulation pulleys (902a, 902b); the boom (2) is hinged on the main pole, and the outer end of the boom (2) is equipped with a second amplitude modulation pulley (903a, 903b); the upper end of the boom assembly (4) is connected to the main pole (1), the lower end is connected to the outer end of the boom (2); the amplitude modulation rope (8) bypasses the movable pulley (905) in the main pole (1), and is connected with the ground force device by the tension rope, and the amplitude modulation rope ( 8) Set up symmetrically with respect to the left and right sides of the main pole (1): the right amplitude modulation rope passes upward through the main pole (1), bypasses the first right amplitude modulation pulley (902a) and the second right amplitude modulation pulley ( 903a), the first pulley (301) of the right AM pulley (3), and finally fixedly connected to the shell of the second right AM pulley (903a), the right AM pulley is located below the right second AM pulley; One end of the hoisting rope (7) is fixed on the left upper end of the main pole (1), and the other end of the hoisting rope (7) goes around the third pulley (303) of the left amplitude modulation block and the hoisting block ( 904b), the second pulley (302) of the left amplitude modulation block (3), the top pulley of the claw arm assembly (101), the second pulley (302) of the right amplitude modulation block, the lifting block (904a) of the right hanging heavy object ), the third pulley (303) of the right amplitude modulation block, the fixed block (901), and finally the lifting device connected to the ground. 2. A self-balancing amplitude modulation pole according to claim 1, characterized in that a boom base (220) is installed at the inner end of the boom (2), and the boom base (220) is Boom lugs (222) are arranged in the middle of the bottom plate of the boom (221); a connecting base (6) is installed in the upper part of the main pole (1), and the structure of the connecting base (6) is: the connecting base main board (601 ) are provided with four installation holes corresponding to the main pole main pipe, and base lugs (602) are symmetrically arranged on the left and right sides of the main board; the boom lugs (222) are hinged to the base lugs (602). 3. A self-balancing amplitude-modulating pole according to claim 2, characterized in that, the boom (2) is composed of several boom lattice sections (210) connected by bolts, and the outer boom (2) The boom composite beam (230) is installed at the end; the cross section of the boom lattice section (210) is a square, and the four main materials (211) are respectively located on the four corners of the square, and the main materials (211) are composed of several The root slanting material (212) is welded and fixed, the two ends of each main material are respectively welded with gaskets (213), and two adjacent gaskets are connected by flange angle steel (214). 4. A self-balancing amplitude modulation pole according to claim 3, characterized in that, the boom composite beam (230) is provided with a pair of first ears of the composite beam on the upper side of the composite beam main board (231) piece (232), the middle part of the other side is provided with a composite beam second lug (233), the composite beam first lug (232) is hinged with the lower end of the boom assembly (4), and the composite beam second lug (233) Hinge the second AM pulley (903a, 903b). 5. A self-balancing amplitude-modulating pole according to any one of claims 1-4, characterized in that, the structure of the boom assembly (4) is: the boom (401 of the boom assembly (4) ) and the extension rod (403) are provided with turnbuckle bolts (402). 6. A self-balancing amplitude modulation pole according to claim 1, characterized in that the first amplitude modulation pulley (902a, 902b) at the upper end of the main pole (1) is installed horizontally with a suspender (5), so The structure of the hanger hanger is as follows: on the hanger base plate (501), there are four mounting holes corresponding to the main arm of the main pole, and on the left and right sides of the hanger base plate (501), there are hanger lugs (502); the first amplitude modulation pulley (902a, 902b) and the upper end of the boom assembly (4) are hinged to the hanger lug (502). 7. A self-balancing amplitude modulation pole according to claim 1, characterized in that the main pole (1) is a circular tube type inner suspension pole.

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