CN205187730U - Electric power angle -steel tower is with supplementary hoisting device - Google Patents

Abstract

The utility model discloses an auxiliary lifting device for an electric angle steel tower, which comprises a mounting base, a bottom clamp, a back clamp, a bearing assembly, a support rod, a universal pulley assembly, a suspension rope and a suspension hook. The installation base is clamped on the horizontal plane and the vertical plane of the tower material of the angle steel tower through the bottom clamp and the back clamp respectively. The support rod has an inverted L-shaped hollow tubular structure, and is connected with the installation base through a bearing assembly. There is an anti-corrosion layer protection pad on the top of the collet, and a polyurethane protection pad on the bottom end of the pressing plate to protect the anti-corrosion layer of the tower material. The lifting rope is suspended on the pulley of the universal pulley assembly and is used for lifting equipment and materials. The utility model can solve the problems of low working efficiency, loose fixation and easy damage to the anticorrosion layer of the high-voltage line tower in the existing simple lifting device, can reduce the difficulty of lifting equipment and materials on the high-voltage line tower, and reduce the labor intensity of workers. , easy operation and high safety.

Description

Auxiliary lifting device for power angle steel tower

technical field

The utility model belongs to the technical field of auxiliary lifting equipment for high-voltage line towers, in particular to an auxiliary lifting device for electric angle steel towers.

Background technique

In the process of remote power transmission, it is often necessary to build large-scale high-voltage line towers. When the high-voltage line tower is rebuilt, expanded, replaced and repaired by equipment or structural parts, it is often necessary to lift tools, equipment or structural parts from the ground to the top of the high-voltage line tower. Angle steel tower is the most common type of high-voltage line tower, most of which are composed of angle steel and bolts. Angle steel tower is widely used in high-voltage power grid transmission because of its small plate pressure drop, high safety performance and low cost. However, the high-voltage power grid needs to be far away from the crowd, so high-voltage line towers such as angle steel towers are often built in remote areas with harsh traffic environments such as suburbs, farmland, and hillsides.

The tower material of the high-voltage line tower includes the main material and the auxiliary material. Neither the main material nor the auxiliary material has a special hoisting point. Due to the lack of special equipment and tools, the installation and maintenance workers can only rely on manual lifting with ropes. In order to reduce the friction between the rope and the main material or auxiliary material of the high-voltage line tower, technicians in the power supply department also use a fixed pulley to lift the installation material or equipment on the main material or auxiliary material of the high-voltage line tower. In the absence of its hoisting truck and crane, the hoisting of angle steel up to 3m in length, insulators up to 220kg in weight, and strain-resistant porcelain bottles is all done by manpower, which has many restrictions on the hoisting and transportation devices of the tower. The device can not only be fixed on the angle steel at any angle, but also has the characteristics of easy transportation, light weight, detachable, safe and reliable, and short assembly cycle. With the change of the installation position of the hoisted items, it is necessary to repeatedly adjust the position of the fixed pulley, which not only brings difficulties to the construction, but also makes the operation inconvenient and consumes man-hours. At the same time, due to the repeated adjustment of the fixed position of the fixed pulley, multiple fixed points of the fixed pulley appear in one construction, leaving multiple screw extrusion and friction marks on the main and auxiliary materials of the high-voltage line tower. These extrusion and friction marks will Destroy the anti-corrosion layer on the main and auxiliary materials of the high-voltage line tower, and shorten the life of the main or auxiliary materials of the high-voltage line tower.

The Chinese utility model patent with the patent application number ZL200720085186.0 discloses a tower head multi-split wire lifting device, which includes two support seats, and is characterized in that there is an adjustable length screw assembly between the two support seats Connection, the two supporting bases are equipped with vertical screw respectively, the lower end of the vertical screw can be connected with the insulating suspender, and the upper part is connected with the screw sleeve placed above the seat body. The multi-split wire lifting device of the utility model is used in conjunction with the six-split wire hook, which can lift the energized wire and replace the insulator string without power failure. However, the multi-split wire lifting device of the utility model needs to be used in conjunction with the six-split wire hook, and its connection and operation process is relatively complicated, and it is still inconvenient to operate for the high-altitude operation of the overhead line.

Most of the main and auxiliary materials of the angle steel tower are angle steel. Because the side width and side thickness of the angle steel are small but the length is large, it is difficult to clamp and fix the pulley. The Chinese patent application number 201120497208.0 discloses an overhead ground wire lifter, which consists of a pulley, a bracket, a fixed splint, and a bolt. The lifter is directly fixed on the beam of the tower with a splint. Although the structure is simple, it is only fixed on one side of the angle steel of the beam. It is easy to cause the angle steel to be deformed due to uneven force, and it is easy to be clamped on the inclined material of the V surface. Displacement, unable to bear heavier loads. The Chinese patent application number 89219011.6 discloses a multi-purpose magnetic hanger, which is formed by combining the permanent magnetic element of the semi-closed magnetic circuit with the ㄈ-shaped steel frame with the hook handle or the L-shaped steel piece with the hook handle cam. The type lever structure can turn the suspension weight into the clamping friction force of the hanger on the steel part. Its simple structure can hang heavy objects or hoist on vertical, horizontal, and inclined angle steels. It is a light and cheap hand tool. However, due to the inability to extend the beam, it is limited by the shape of the angle steel tower, which is small at the top and large at the bottom. It is only suitable for the internal space formed by the cross arm of the angle steel tower and the pole, and the scope of action is small. The Chinese patent with the application number 201310416155.9 discloses a hoisting method for a communication tower. The implementation device consists of a base, a gallows, a traction rope and a fixed pulley block fixed on the cross arm. During hoisting, the two gallows respectively control the vertical Displacement and horizontal displacement, this method is easy to implement, but when changing the hoisting direction, it is necessary to climb up the iron tower and fix the position of the fixed pulley again, and the execution efficiency is low. Thereby, it is very necessary to design a kind of telescopic and rotating auxiliary lifting device.

Contents of the invention

The purpose of this utility model is to provide an auxiliary lifting device for electric angle steel towers in view of the deficiencies of the prior art, so as to solve the problem of low work efficiency and easy damage to the anticorrosion of high-voltage line tower materials in the prior art by using fixed pulleys and hoisting belts or wire ropes for lifting. It reduces the difficulty of lifting equipment and materials during the installation and maintenance of high-voltage line towers, reduces the labor intensity of workers, and improves work efficiency.

The technical problems to be solved by the utility model are realized by the following technical solutions.

An auxiliary hoisting device for an electric angle steel tower, comprising a mounting base, a bottom clamp, a back clamp, a bearing assembly, a support rod, a universal pulley assembly, a suspension rope and a suspension hook. Wherein, the bottom clamp used for bottom clamping is located at the bottom of the installation base, and is connected with the installation base through threads, and the bottom clamp clamps the installation base on the horizontal plane of the tower material of the angle steel tower; the back clamp It is located on one side of the installation base, and is connected with the installation base through threads, and is used for clamping the installation base on the vertical surface of the tower material of the angle steel tower. The support rod has an inverted L-shaped hollow tubular structure, and adopts a stainless steel tube; the bottom of the support rod is connected with the installation base through a bearing assembly to reduce friction. The universal pulley assembly is located at the top end of the support rod, and is connected with the support rod through a detachable hinge; the universal pulley assembly includes a pulley, a wheel frame and a shaft pin, and a rolling bearing is arranged in the pulley In order to reduce friction, the pulley and the wheel frame are connected by pivot pins, the wheel frame is connected with the support rod through a detachable vertical hinge, and a locknut is provided on the top of the wheel frame; The rope is suspended on the pulley of the universal pulley assembly, and the hook for hoisting equipment and materials is located at one end of the suspension rope and is fixedly connected with the suspension rope.

The mounting base includes a lower mounting base, an upper mounting base and a cylindrical support base. Wherein, the upper mounting base has an L-shaped structure, the lower mounting base and the upper mounting base are integral plastic forming parts, and side connecting plates are provided on the sides of the lower mounting base and the upper mounting base to prevent the lower mounting base from The seat and the upper mounting seat recover or deform during work; the two ends of the side connecting plate are fixedly connected with the lower mounting seat and the upper mounting seat by welding; the lower mounting seat is provided with a lower thread Holes for mounting the bottom clamp. The cylindrical support seat is located on the horizontal support plate of the upper mounting seat, and is fixedly connected with the upper mounting seat by welding. Two symmetrically arranged triangular reinforcing ribs are arranged on the left and right sides of the cylindrical support seat and the upper mounting seat The horizontal support plate of the mounting seat is connected; on the back of the cylindrical support seat, a side reinforcing rib is provided to connect with the vertical plate of the upper mounting seat, and a locking threaded hole is provided on the top outside of the cylindrical support seat; Two upper threaded holes and two round pin holes are arranged on the vertical plate of the mounting seat; locking screws are installed in the locking threaded holes of the cylindrical support seat, and a locking screw is arranged on the outer end of the locking screw. There is a ring groove movable handle, which is used to control the locking screw to lock or loosen the support rod.

The bottom clamp includes a fork handle, a threaded mandrel and a collet. The fork-shaped handle is connected to the lower end of the threaded mandrel through a hinge; the head of the threaded mandrel is provided with an annular groove, and the middle part of the threaded mandrel is provided with an external thread, and the threaded mandrel is placed In the lower threaded hole of the lower mounting seat; a nylon anti-corrosion protection pad is provided on the top of the cylindrical chuck, and the cylindrical chuck is set on the head of the threaded ejector rod, and is connected with the threaded ejector The rods are connected by anti-off screws to prevent the collet chuck from being disengaged from the threaded mandrel during transportation and adjustment.

The back clamp includes a pressing plate, a pressing screw, a movable handle, a limit bolt and a spring. A central round hole and a pin hole are provided on the top of the press plate, and a polyurethane protection pad is provided at the bottom end of the press plate, and the polyurethane protection pad is connected to the bottom of the press plate by glue. One end of the compression screw is connected with the movable handle through a movable hinge, and the other end of the compression screw is connected with the upper threaded hole in the vertical plate of the upper mounting base through threads. The outer end of the limit pin is placed in the pin hole of the pressure plate, and the inner end of the limit pin is placed in the round pin hole in the vertical plate of the upper mounting seat, which is used to prevent the pressure plate from winding around during the back fixture. The axis of the tightening screw rotates. A stop ring is also provided at the inner end of the limit bolt, which is used to compress the spring when the limit bolt is pulled out. The pressing plate is set in the middle of the pressing screw, and is used for pressing the vertical surface of the tower material of the angle steel tower. The spring is sleeved on the limit bolt, and the spring is located between the vertical plate and the pressure plate of the upper mounting seat.

The bearing assembly includes a radial bearing, a thrust bearing and a spacer. There are two sets of radial bearings, both of which are cylindrical roller bearings; both sets of radial bearings and spacers are set on the bottom of the support rod, and the spacers are located between the two sets of radial bearings; the stop Push bearings are installed at the bottom end of the support rods to accommodate axial loads from the support rods.

During use, first according to the actual needs of the work, select the installation position and the installation attitude of the utility model on the angle steel tower of the high voltage line. Clamp the installation base on the tower material of the angle steel tower, adjust and fix the back clamp and bottom clamp in turn. Then the lifting rope is passed into the pulley of the pulley assembly, and the lifting and lifting tasks can be performed. When adjusting the bottom clamp, pay attention to adjusting the screw-in length of the anti-loosening screw to avoid fixing the collet chuck on the threaded mandrel. When using the back clamp, when the back clamp is in the clamping working state, ensure that the inner end of the limit pin is placed in the round pin hole in the vertical plate of the upper mounting base; when the back clamp is in the non-clamping working state , the inner end of the limit pin can be pulled out from the round pin hole in the vertical plate of the upper mounting base, so as to rotate the pressure plate and install or remove the mounting base.

The beneficial effects of the utility model are: compared with the existing technology, the utility model can solve the problems of the existing simple lifting device such as low working efficiency, loose fixation, and easy damage to the anticorrosion layer of the high-voltage line tower, and can reduce the cost of the equipment on the high-voltage line tower. The difficulty of material lifting reduces the labor intensity of workers. It has the characteristics of simple structure, convenient installation and operation, strong adaptability and high safety.

Description of drawings

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

Fig. 2 is a structural schematic diagram of the installation base and the back clamp of the utility model;

Figure 3 is a schematic diagram of the assembly relationship between the support rod of the present invention, the mounting base, and the bearing assembly;

Fig. 4 is the structural representation of threaded mandrel of the present utility model;

Fig. 5 is the structural representation of the pressing plate of the present utility model;

Fig. 6 is a schematic diagram of the working state of the utility model.

detailed description

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments and illustrations.

As shown in Figure 1, Figure 2, Figure 3 and Figure 6, an auxiliary lifting device for a power angle steel tower, including a mounting base 1, a bottom clamp 2, a back clamp 3, a bearing assembly 4, a support rod 5, and a universal pulley assembly 6, suspension rope 7 and suspension hook 8. Wherein, the bottom clamp 2 used for bottom clamping is located at the bottom of the installation base 1, and is connected with the installation base 1 through threads, and the bottom clamp 2 clamps the installation base 1 on the horizontal plane of the tower material 9 of the angle steel tower ; The back clamp 3 is located on one side of the installation base 1, and is connected with the installation base 1 through threads, and is used to clamp the installation base 1 on the vertical surface of the tower material 9 of the angle steel tower. The support rod 5 has an inverted L-shaped hollow tubular structure, and is made of stainless steel; the bottom of the support rod 5 is connected with the installation base 1 through the bearing assembly 4 to reduce friction. The universal pulley assembly 6 is located at the top end of the support rod 5, and is connected with the support rod 5 through a detachable hinge; the universal pulley assembly 6 includes a pulley 61, a wheel frame 62 and a shaft pin 63, and the Roller bearings are provided in the pulley 61 to reduce friction, and the pulley 61 is connected with the wheel frame 62 through a pivot pin 63. The wheel frame 62 is connected with the support rod 5 through a detachable vertical hinge, and the wheel The top of the frame 62 is provided with a lock nut 64; the hanging rope 7 is suspended on the pulley 61 of the universal pulley assembly 6, and the suspension hook 8 for lifting equipment and materials is located at one end of the hanging rope 7, and is connected with the hanging rope. Rope 7 is fixedly connected.

As shown in FIGS. 1 , 2 , 3 and 6 , the mounting base 1 includes a lower mounting base 11 , an upper mounting base 12 and a cylindrical support base 13 . Wherein, the upper mounting base 12 has an L-shaped structure, the lower mounting base 11 and the upper mounting base 12 are integral plastic moldings, and side connecting plates 14 are provided on the sides of the lower mounting base 11 and the upper mounting base 12 , used to prevent the lower mounting base 11 and the upper mounting base 12 from recovering or deforming during work; the two ends of the side connecting plate 14 are fixedly connected to the lower mounting base 11 and the upper mounting base 12 by welding; The lower mounting base 11 is provided with a lower threaded hole 111 for installing the bottom fixture 2 . The cylindrical support base 13 is located on the horizontal support plate 121 of the upper mounting base 12, and is fixedly connected with the upper mounting base 12 by welding. Two symmetrically arranged The triangular reinforcing rib 15 is connected to the horizontal support plate 121 of the upper mounting base; on the back side of the cylindrical supporting base 13, a side reinforcing rib 16 is connected to the vertical plate 122 of the upper mounting base 12, and on the outside of the top of the cylindrical supporting base 13 There are locking threaded holes 131; two upper threaded holes 123 and two round pin holes 124 are provided on the vertical plate 122 of the upper mount 12; A locking screw 17 is housed in the hole 131 , and an annular groove type movable handle 18 is arranged at the outer end of the locking screw 17 for controlling the locking screw 17 to lock or loosen the support rod 5 .

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 6 , the bottom clamp 2 includes a fork handle 21 , a threaded push rod 22 and a cylindrical chuck 23 . The fork-shaped handle 21 is connected to the lower end of the threaded mandrel 22 through a hinge; the head of the threaded mandrel 22 is provided with an annular groove 221, and the middle part of the threaded mandrel 22 is provided with an external thread. The threaded mandrel 22 is placed in the lower threaded hole 111 of the lower mounting base 11; a nylon anti-corrosion protection pad 24 is provided on the top of the cylindrical chuck 23, and the cylindrical chuck 23 is set on the The head of the threaded mandrel 22 is connected with the threaded mandrel 22 through an anti-off screw 25 to prevent the collet chuck 23 from being disengaged from the threaded mandrel 22 during transportation and adjustment.

As shown in FIGS. 1 , 2 , 3 , 4 , 5 and 6 , the back clamp 3 includes a pressure plate 31 , a compression screw 32 , a movable handle 33 , a limit pin 34 and a spring 35 . A central circular hole 311 and a pin hole 312 are provided on the top of the pressing plate 31, a polyurethane protection pad 313 is provided at the bottom end of the pressing plate 31, and the bottom of the pressing plate 31 is glued to the bottom of the pressing plate 31. connected in a connected manner. One end of the compression screw 32 is connected with the movable handle 33 through a living hinge, and the other end of the compression screw 32 is connected with the upper threaded hole 123 in the vertical plate 122 of the upper mount 12 through threads. The outer end of the limit pin 34 is placed in the pin hole 312 of the pressure plate 31, and the inner end of the limit pin 34 is placed in the round pin hole 124 in the vertical plate 122 of the upper mounting base 12 for clamping on the back. 3 Prevent the pressing plate 31 from rotating around the axis of the pressing screw 32 during the working process. A stop collar 341 is also provided at the inner end of the limit bolt 34 to compress the spring 35 when the limit bolt 34 is pulled out. The pressing plate 31 is sleeved in the middle of the pressing screw 32, and is used for pressing the vertical surface of the tower material of the angle steel tower. The spring 35 is sleeved on the limit pin 34 , and the spring 35 is located between the vertical plate 122 of the upper mount 12 and the pressing plate 31 .

As shown in FIG. 1 , FIG. 3 and FIG. 6 , the bearing assembly 4 includes a radial bearing 41 , a thrust bearing 42 and a spacer 43 . There are two groups of radial bearings 41, both of which are cylindrical roller bearings; two groups of radial bearings 41 and spacers are set on the bottom of the support rod 5, and the spacers 43 are located between the two groups of radial bearings 41 ; The thrust bearing 42 is installed at the bottom end of the support rod 5 for bearing the axial load from the support rod 5 .

During use, first according to the actual needs of the work, select the installation position and the installation attitude of the utility model on the angle steel tower of the high voltage line. Clamp the installation base 1 on the tower material 9 of the angle steel tower, adjust and fix the back clamp 3 and the bottom clamp 2 in sequence. Then the suspension rope 7 is passed in the pulley 61 of the pulley assembly 6, and the hoisting and lifting tasks can be performed. When adjusting the bottom clamp 2, pay attention to adjusting the screw-in length of the anti-loosening screw 25, so as to avoid fixing the cylindrical chuck 23 on the threaded mandrel 22. When the back clamp 3 is in use, when the back clamp 3 is in the clamping working state, ensure that the inner end of the limit latch 34 is placed in the round pin hole 124 in the vertical plate 122 of the upper mount 12; when the back clamp 3 When in the non-clamping working state, the inner end of the stop pin 34 can be pulled out from the round pin hole 124 in the vertical plate 122 of the upper mounting base 12, so as to rotate the pressing plate 31 and install or disassemble the mounting base 1.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Various changes and improvements all fall within the scope of protection of the present invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (2)

1. an electric power angle steel tower auxiliary lifting apparatus, comprise mounting seat, bottom jig, back fixture, bearing assembly, strut bar, Universal pulley assembly, lifting rope and suspension hook, it is characterized in that: described bottom jig is positioned at the bottom of mounting seat, and is connected by screw thread with mounting seat; Described back fixture is positioned at the side of mounting seat, and is connected by screw thread with mounting seat; Described strut bar is inverted L-shaped hollow tubular structure, and the bottom of strut bar is connected with mounting seat by bearing assembly, and described Universal pulley assembly is positioned at the top end of strut bar, and is connected by dismountable hinge with strut bar; Described Universal pulley assembly comprises pulley, wheel carrier and pivot pin, antifriction-bearing box is provided with in described pulley, and be connected by pivot pin between pulley with wheel carrier, described wheel carrier is connected by detouchable vertical hinge with strut bar, and is provided with black nut at the top of wheel carrier; Described lifting rope is suspended on the pulley of Universal pulley assembly, and described suspension hook is positioned at one end of lifting rope, and is connected with lifting rope;

Described mounting seat comprises lower mount pad, upper mount pad and tubular supporting seat, the described L-shaped structure of upper mount pad, described lower mount pad and upper mount pad are overall Plastic Forming part, and be provided with side connecting plate in the side of lower mount pad and upper mount pad, described lower mount pad is provided with lower tapped bore; Described tubular supporting seat is positioned on the horizontal supporting plate of mount pad, and be connected by the mode of welding with upper mount pad, be provided with two triangle reinforced ribs be arranged symmetrically with to be connected with the horizontal supporting plate of upper mount pad in the left and right sides of tubular supporting seat, be provided with position, side reinforced rib to be connected with the diaphragm plate of upper mount pad at the back side of tubular supporting seat, be provided with locking screw pit in the top outer of tubular supporting seat; The diaphragm plate of described upper mount pad is provided with two upper screwed holes and two pin hole; At the locking screw pit of described tubular supporting seat built with lock screw, be provided with circular groove type free handle at the external side end of described lock screw;

Described bottom jig comprises fork-shaped handle, threaded mandrel and tubular chuck, and described fork-shaped handle is connected by hinge with the lower end of threaded mandrel; The head of described threaded mandrel is provided with annular groove, is provided with outside thread at the middle part of threaded mandrel, and described threaded mandrel is placed in the lower tapped bore of lower mount pad; Be provided with the preservative coat neonychium of nylon material at the top of described tubular chuck, described tubular collet sleeve is contained in the head of threaded mandrel, and is connected by anti-loosing screw with threaded mandrel;

Described back fixture comprises pressing plate, housing screw, free handle, limit bolt and spring, center hole and pin hole is provided with at the top of described pressing plate, be provided with polyurethane neonychium in the bottom end of described pressing plate, and described polyurethane neonychium is connected by the mode of glueing joint with the bottom of pressing plate; One end of described housing screw is connected by hinges with free handle, and the other end of housing screw is connected by screw thread with the upper screwed hole in the diaphragm plate of upper mount pad; The outer end of described limit bolt is placed in the pin hole of pressing plate, and the inner of limit bolt is placed in the pin hole of the diaphragm plate of mount pad; Described pressing plate is sleeved on the middle part of housing screw, and described spring housing is contained on limit bolt, and spring is between the diaphragm plate and pressing plate of upper mount pad.

2. electric power angle steel tower auxiliary lifting apparatus according to claim 1, it is characterized in that: described bearing assembly comprises radial bearing, thrust bearing and spacer, described radial bearing has two groups, and is cylindrical roller bearing; Two groups of radial bearings and spacer are all sleeved on the bottom of strut bar, and spacer is between two groups of radial bearings; Described thrust bearing is arranged on the bottom end of strut bar.