CN108002249A - Substation equipment maintenance and repair small space boom hoisting - Google Patents

Abstract

The invention provides a hoisting device in a narrow space for substation inspection and maintenance, which includes a support system arranged on a mobile base and a hoisting system connected with the support system. The support system includes a hydraulic telescopic column and a hydraulic telescopic column. A rotary motor connected to the bottom; the rotary motor is arranged on the mobile base, so that the support system can rotate 360 degrees; the lifting system includes a movable arm and an extension arm connected to each other, and the movable arm is set as Z-shaped folding arm, the rear end of the movable arm is set as a telescopic beam, and the telescopic beam is connected with the support system; the extension arm is a fork-shaped structure boom, and the extension arm is arranged on the movable arm At the front end, a balance ring is arranged at the front end of the extension arm, and an electric lifter or a manual lifter is arranged on the balance ring. The invention adopts a convenient and efficient composite lifting method, has small volume and wide application range, and can meet various on-site use requirements of substations.

Description

Lifting device for substation maintenance in narrow space

technical field

The invention relates to the technical field of substation lifting, in particular to a lifting device in a narrow space for substation maintenance.

Background technique

The increasingly stringent electric power assessment index has caused the scope of work to be reduced when the power equipment is overhauled, that is, the equipment that does not need to be overhauled cannot be shut down due to equipment overhaul. However, equipment maintenance often requires lifting equipment to work. If other equipment is not powered off, it is difficult to ensure a safe distance, which will cause unsafe factors for people. Carry out maintenance work in narrow space for this reason, use large-scale hoisting equipment to be limited. The invention with the patent number 201611114450.9 relates to the field of construction and hoisting, specifically to the mobile base of the substation hanger and the spare hanger of the substation. The mobile substation hanger base includes a base body, a support base, traveling wheels and an adjustment platform. The traveling wheels are arranged at the bottom of the base body, and the base body has a storage cavity. The support seat includes an extension part and a support part, and the support part is arranged at one end of the extension part. The other end of the extension part is slidably disposed in the receiving cavity, so that the support part is away from or close to the seat body. The supporting part is used for supporting the seat body so that the traveling wheels are detached from the ground. The adjustment platform is connected with the top surface of the seat body through the telescopic part. Such a substation hanger mobile base is stable, reliable and easy to use. Substation spare hanger, including column, suspension arm, hoisting mechanism and the above-mentioned substation hanger mobile base, one end of the column is connected with the suspension arm, the other end of the column is connected with the top of the adjustment platform, and the hoisting mechanism is set on the suspension The end of the arm away from the upright. Columns and suspension arms are retractable structures. However, although the above-mentioned small hoists can directly reach the vicinity of the equipment, and adopt the hoisting method of lifting, the hoisting height is less affected by the live equipment above, and it is flexible, convenient and safe to use, but one is expensive, and the other is to use hoisting in live areas. The radius is severely limited, and the small-scale on-site lifting of power substation projects that can meet our requirements so far is still a blank in the domestic and foreign markets.

Contents of the invention

The invention provides a hoisting device in a narrow space for substation inspection and maintenance, adopts a convenient and efficient composite hoisting method, has small volume, wide application range, and can meet various on-site use requirements of substations.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a lifting device for power substation maintenance in a small space, including a support system arranged on a mobile base and a lifting system connected with the support system, and the support system includes a hydraulic A telescopic column and a rotary motor connected to the bottom of the hydraulic telescopic column; the rotary motor is arranged on the mobile base so that the support system can rotate 360 degrees; the lifting system includes movable arms connected to each other and an extension arm, the movable arm is set as a Z-shaped folding arm, the rear end of the movable arm is set as a telescopic beam, and the telescopic beam is connected with the support system; the extension arm is a fork-shaped structure boom, and the The extension arm is arranged at the front end of the movable arm, a balance ring is arranged at the front end of the extension arm, and an electric lifter or a manual lifter is arranged on the balance ring.

Further, the balance ring is an open and closed ring frame, and the ring frame and the front end of the extension arm form a rotatable structure to ensure that the ring frame always maintains a horizontal position at every angle of the lifting system movement .

Further, the inner wall of the annular frame is lined with wooden strips or rubber pads.

Further, the manual hoist includes a support rod and a manual boom connected to the support rod, and double traction rings are arranged on the manual boom, and the double traction rings are connected with blocks, and the blocks are safely towed. The rope is connected to the manual rocker, and the manual rocker is arranged on the mobile base.

Further, the pulley block includes a fixed pulley and a movable pulley set below the fixed pulley.

Further, the electric lifter includes a hoop-type lifting ring and an electric zipper mechanism connected with the hoop-type lifting ring.

Further, the electric zipper mechanism includes a wire rope lifting member, a hydraulic cylinder and an electric operating mechanism. The electric operating mechanism is arranged on the mobile base, and the hydraulic cylinder drives the wire rope lifting member to move to realize lifting; the hydraulic cylinder Set inside the front end of the movable arm.

Further, a certain number of hooks are arranged on the outer periphery of the hoop-type lifting ring.

Further, the lower end of the hoop-type lifting ring is connected with a circular chute, which can rotate the heavy object during lifting to facilitate installation.

The beneficial effects of the present invention are reflected in the following aspects:

1. According to the needs of working conditions, the present invention can freely choose the manual or electric lifting mode according to the different electric hoist or manual hoist, which can meet the requirements of a large number of electric power maintenance work. The electric operation is convenient and effective, and the manual operation saves time and effort. Those skilled in the art can freely choose or use in combination according to different needs.

2. The present invention adopts the international leading technology in the hoisting and lifting method, absorbs the advantages of traditional folding lifting and telescopic lifting, not only designs the folding arm as a Z-shaped hydraulic or electric lifting and folding structure, but can be installed in a miniaturized On the chassis of the inspection and maintenance body, it has the advantages of light weight, small operating radius, small space occupation, and large carrying capacity. The internal construction of the power station, and the telescopic arm is integrated on the basis of the folding arm, which has better bending resistance and torsional rigidity, and increases the working radius.

3. The manual mode of the present invention adopts the hoisting method of the block block, which can be oriented according to the support of the traction ring. The block block cooperates with lifting, the working radius is small, the preparation work is simple, suitable for most simple working conditions, and the manpower construction cost and the construction radius range are greatly reduced .

4. In the electric hoop hoisting method of the present invention, the head of the hoisting telescopic arm is equipped with a hoop-shaped hoop ring. When hoisting, the hoop not only plays the role of fixing (not clamping), but also plays the role of a hook; The lower end of the hoop ring is connected with a circular chute, and the function of the circular chute is to rotate heavy objects for easy installation. When lifting, the hoop-type lifting ring and the circular chute are located above the center of gravity of the electric equipment, which ensures the stability during the lifting process.

5. The present invention changes the lifting mode in the traditional construction process, minimizes the scope of power outages in the maintenance or installation of electric facilities, ensures the safe operation of the system, and ensures the reliable power supply of users. Through the application of this new type of equipment, It can improve the work efficiency and construction safety of power station construction, lay a solid foundation for future power station construction or in the field of emergency rescue, and effectively solve the contradiction between power facility construction and maintenance and system safety and reliable power supply.

Description of drawings

Fig. 1 is a schematic structural diagram of the manual lifting mode of the present invention.

Fig. 2 is a structural schematic diagram of the electric hoisting mode of the present invention.

Detailed ways

Embodiment one

As shown in Figure 1, the lifting device for power substation maintenance in a narrow space includes a support system arranged on a mobile base 1 and a lifting system connected to the support system. The support system includes a hydraulic telescopic column 2 and a hydraulic telescopic column connected to the bottom The rotating motor 3; the rotating motor 3 is arranged on the mobile base 1, so that the support system can rotate 360 degrees; the lifting system includes a movable arm 4 and an extension arm 5 connected to each other, and the movable arm is set as a zigzag folding arm, and the movable arm The rear end of the telescopic beam is set as a telescopic beam 6, and the telescopic beam is connected with the support system; the extension arm is a fork-shaped structure boom, and the extension arm is set at the front end of the movable arm, and the balance ring 7 is set at the front end of the extension arm, and a manual hoist 9 is set on the balance ring .

The balance ring 7 is an open and closed ring frame, and the ring frame and the front end of the extension arm form a rotatable structure to ensure that the ring frame keeps a horizontal position at every angle of the lifting system movement.

The inner wall of the ring frame is lined with wooden strips or rubber pads.

Manual hoist 9 comprises support bar 10 and the manual boom 11 that is connected with support bar, and double traction ring 12 is set on the manual boom 11, and double traction ring connects block block 13, and block block connects manual rocker arm 14 by safety traction rope, The manual rocker arm 14 is arranged on the mobile base.

The pulley block 13 includes a fixed pulley and a movable pulley set below the fixed pulley.

The lifting system of the present invention fully considers the advantages and disadvantages of the folding arm and the telescopic arm, and innovates them. The operating principles of the two are different: the top of the telescopic arm can be connected to the work basket through the flying arm, and the slewing mechanism makes the working arm 360°full rotation , as the main force-bearing component, its weight generally accounts for about 20%~25% of the weight of the whole machine, so the key lies in the form of the telescopic mechanism and the section form of the boom, while the folding arm is lighter in weight than the telescopic arm, has a small working radius, and is easy to manufacture , storage volume and many other advantages are relatively mature in the application of the truck-mounted crane, but the truck-mounted crane is too bulky to enter the interior of the power station for construction, so installing the folding arm on a miniaturized chassis is the innovation point of the invention , It also provides a new construction plan for the future construction of the power station.

After a comprehensive analysis of the present invention, if the telescopic arm is used for the small-scale hoisting of the present invention, the hoisting requirements cannot be fully met, the operating radius of the telescopic arm is large, and the arm length is inversely proportional to the hoisting weight. The use of folding arms can well solve the small-radius lifting problem. The folding arm structure occupies a small area and has strong lifting capacity. In order to increase the height, the rear end of the small lifting folding arm is provided with a telescopic arm. At the same time, the front end of the folding arm of the present invention is provided with a fork-shaped boom. Compared with the straight arm, the working radius is correspondingly reduced, but the lifting capacity is increased. Large, and at the same time, the equipment to be lifted can be placed inside the wishbone to reduce the construction scope. Therefore, this invention uses the folding arm (increased telescopic function) + wishbone structure.

In actual production, the folding arm can adopt a rectangular cross-section, the manufacturing process is simple, has good bending resistance and torsional rigidity, and is suitable for the development of the boom frame of the present invention, and the telescopic arm can adopt a two-way bending ellipse mainly subject to bending Cross-section member, the upper curved plate is a large circular arc grooved plate, the lower curved plate is an oval grooved plate, and shrinks from bottom to top, its weight is optimized, its torsional performance is remarkable, and it has inherent unique stability and anti-torsion ability. The technology of elliptical hoisting represents the highest level. Since no reinforcement is needed, the change of the cross section of each jib is small, which is beneficial to reduce the weight of the hoisting arm and improve the hoisting capacity of the hoisting machine.

The lifting adopts a "Z" shape hydraulic or electric lifting and folding structure. The most significant advantage of this structure is that it takes up little space and has a large carrying capacity. The supporting system of "Z" shape lifting can be fixed horizontally on the upper plane of the chassis. The front end of the hoisting system is designed with an open and closed ring frame, and the inner wall of the ring frame can be lined with wooden strips or rubber pads. The fixation between the ring frame and the front end of the lifting system is designed as a rotatable structure to ensure that the ring frame always maintains a horizontal position at every angle of the lifting movement, and an appropriate number of hooks are set on the outer circumference of the ring frame to facilitate disassembly or installation of equipment. . For example: when disassembling PT/CT, the ring frame can be fixed on the outside of the porcelain sleeve, and the inner wall of the ring frame is lined with wooden strips or rubber pads to ensure that the porcelain sleeve can effectively avoid collision with the metal ring frame during operation , by adjusting the length of the sling, the ring frame can also play a role in preventing the equipment from tilting and falling over.

The manual hoist includes a support rod and a manual boom connected to the support rod. Double traction rings are set on the manual boom, and the double traction rings are connected to the blocks. seat.

The support rod is mainly used to support the entire hanger to ensure the stability of the whole hanger during installation and use. The support rod can be assembled and adjusted in multiple sections, and each section can be nested with each other. Screws are used to fix between them, and fixing parts are set at the ends of the support rods. The fixing parts are connected with the surrounding fixed facilities of the power equipment, such as equipment mounting frames, line towers, equipment pipeline support frames, etc. For relatively stable facilities where position deviation occurs, the fixing parts include universal flat iron hoops, which are convenient for material collection and processing.

A safety traction rope is set on the double traction ring. The block includes a fixed pulley and a movable pulley set under the fixed pulley. The purpose of using the block is to use the characteristics of the movable pulley to achieve labor-saving effect, and the second is to use the direction-changing characteristics of the fixed pulley , during the lifting process, the initial position requirements for the replacement facilities are relatively loose, and the direction can be changed according to the force requirements. The pulleys in the block block are all insulated pulleys, which is conducive to the needs of electrical safety.

The block block is connected to the manual rocker arm through a safety traction rope, and the manual rocker arm is set on the mobile base. During manual operation, the block block block can be raised and lowered by shaking the manual rocker arm.

In practical applications, the bottom of the mobile base is equipped with rollers, which can be driven by electric or manual. The rollers include universal wheels arranged at the front end of the mobile base and driven wheels arranged at the rear end of the mobile base. Brakes are set on the driven wheels. The device can be realized by using rubber brake blocks.

Embodiment two

As shown in Figure 2, the lifting device for power substation maintenance in a narrow space includes a support system arranged on a mobile base 1 and a lifting system connected to the support system. The support system includes a hydraulic telescopic column 2 and a hydraulic telescopic column connected to the bottom The rotating motor 3; the rotating motor 3 is arranged on the mobile base 1, so that the support system can rotate 360 degrees; the lifting system includes a movable arm 4 and an extension arm 5 connected to each other, and the movable arm is set as a zigzag folding arm, and the movable arm The rear end of the telescopic beam is set as a telescopic beam 6, and the telescopic beam is connected with the support system; the extension arm is a fork-shaped structure boom, and the extension arm is set at the front end of the movable arm, and the front end of the extension arm is set with a balance ring 7, and an electric hoist 8 is set on the balance ring .

The balance ring 7 is an open and closed ring frame, and the ring frame and the front end of the extension arm form a rotatable structure to ensure that the ring frame keeps a horizontal position at every angle of the lifting system movement.

The inner wall of the ring frame is lined with wooden strips or rubber pads.

The electric hoist 8 includes a hoop type lifting ring 15 and an electric zipper mechanism connected with the hoop type lifting ring.

The electric zipper mechanism includes a wire rope lifting part 16, a hydraulic cylinder 17 and an electric operating mechanism 18. The electric operating mechanism is arranged on the mobile base, and the hydraulic cylinder drives the wire rope lifting part to move to realize lifting; the hydraulic cylinder is arranged inside the front end of the movable arm .

A certain number of suspension hooks 20 are arranged on the periphery of the hoop type suspension ring.

The lower end of the hoop type suspension ring is connected with the circular chute 19, which can rotate the weight when lifting and is convenient for installation.

The lifting system of the present invention fully considers the advantages and disadvantages of the folding arm and the telescopic arm, and innovates them. The operating principles of the two are different: the top of the telescopic arm can be connected to the work basket through the flying arm, and the slewing mechanism makes the working arm 360°full rotation , as the main force-bearing component, its weight generally accounts for about 20%~25% of the weight of the whole machine, so the key lies in the form of the telescopic mechanism and the section form of the boom, while the folding arm is lighter in weight than the telescopic arm, has a small working radius, and is easy to manufacture , storage volume and many other advantages are relatively mature in the application of the truck-mounted crane, but the truck-mounted crane is too bulky to enter the interior of the power station for construction, so installing the folding arm on a miniaturized chassis is the innovation point of the invention , It also provides a new construction plan for the future construction of the power station.

After a comprehensive analysis of the present invention, if the telescopic arm is used for the small-scale hoisting of the present invention, the hoisting requirements cannot be fully met, the operating radius of the telescopic arm is large, and the arm length is inversely proportional to the hoisting weight. The use of folding arms can well solve the small-radius lifting problem. The folding arm structure occupies a small area and has strong lifting capacity. In order to increase the height, the rear end of the small lifting folding arm is provided with a telescopic arm. At the same time, the front end of the folding arm of the present invention is provided with a fork-shaped boom. Compared with the straight arm, the working radius is correspondingly reduced, but the lifting capacity is increased. Large, and at the same time, the equipment to be lifted can be placed inside the wishbone to reduce the construction scope. Therefore, this invention uses the folding arm (increased telescopic function) + wishbone structure.

In actual production, the folding arm can adopt a rectangular cross-section, the manufacturing process is simple, has good bending resistance and torsional rigidity, and is suitable for the development of the boom frame of the present invention, and the telescopic arm can adopt a two-way bending ellipse mainly subject to bending Cross-section member, the upper curved plate is a large circular arc grooved plate, the lower curved plate is an oval grooved plate, and shrinks from bottom to top, its weight is optimized, its torsional performance is remarkable, and it has inherent unique stability and anti-torsion ability. The technology of elliptical hoisting represents the highest level. Since no reinforcement is needed, the change of the cross section of each jib is small, which is beneficial to reduce the weight of the hoisting arm and improve the hoisting capacity of the hoisting machine.

The lifting adopts a "Z" shape hydraulic or electric lifting and folding structure. The most significant advantage of this structure is that it takes up little space and has a large carrying capacity. The supporting system of "Z" shape lifting can be fixed horizontally on the upper plane of the chassis. The front end of the hoisting system is designed with an open and closed ring frame, and the inner wall of the ring frame can be lined with wooden strips or rubber pads. The fixation between the ring frame and the front end of the lifting system is designed as a rotatable structure to ensure that the ring frame always maintains a horizontal position at every angle of the lifting movement, and an appropriate number of hooks are set on the outer circumference of the ring frame to facilitate disassembly or installation of equipment. . For example: when disassembling PT/CT, the ring frame can be fixed on the outside of the porcelain sleeve, and the inner wall of the ring frame is lined with wooden strips or rubber pads to ensure that the porcelain sleeve can effectively avoid collision with the metal ring frame during operation , by adjusting the length of the sling, the ring frame can also play a role in preventing the equipment from tilting and falling over.

The front end of the lifting system is equipped with a wire rope zipper structure, and an oil cylinder is installed inside the movable arm, which can drive the zipper structure through the action of the oil cylinder for fine adjustment up and down. The front end of the hoisting system is equipped with hoop-type lifting rings. When lifting, the hoop-type lifting rings not only play the role of fixing (not clamping) (through manual clamping devices on both sides), but also play the role of hooks; the lower end of the hoop-type lifting rings is connected There is a circular chute, and the function of the circular chute is to rotate heavy objects for easy installation. When lifting, the hoop-type lifting ring and the circular chute are located above the center of gravity of the electric equipment, which ensures the stability during the lifting process.

In practical applications, the bottom of the mobile base is equipped with rollers, which can be driven by electric or manual. The rollers include universal wheels arranged at the front end of the mobile base and driven wheels arranged at the rear end of the mobile base. Brakes are set on the driven wheels. The device can be realized by using rubber brake blocks.

Manufactured by the applicant unit and shown in practice, the planned cost of each device of the present invention is 30,000 yuan, and the total cost is 150,000 yuan. Preliminary tests have been carried out on the present invention, and the performance is good, and the weight within 200 kg can be lifted. The lifting height is 3 meters, and the rotation radius is 1.2 meters. That is, through the rotation of the upper beam, the heavy object can be placed anywhere within the radius, which can meet the internal construction of most substations and can be promoted nationwide. After being put into use It will produce great economic benefits, so it has good economic and social benefits.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the present invention without limitation, other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and spirit of the technical solution of the present invention All should be included in the scope of the claims of the present invention.

Claims (9)

1. substation equipment maintenance and repair small space boom hoisting, it is characterised in that：Including the support system that is arranged on mobile foundation and The tackling system being connected with the support system, the support system include fluid pressure type telescopic column and are stretched with the fluid pressure type The electric rotating machine of contracting column bottom connection；The electric rotating machine is arranged on the mobile foundation, makes the support system can be with Carry out 360 degree of rotations；The tackling system includes the lever arm and adjutage being connected with each other, and the lever arm is arranged to zigzag Arm is folded, the rear end of the lever arm is arranged to telescoping crossbeam, and the telescoping crossbeam is connected with the support system；The extension Arm is fork configuration arm, and the adjutage is arranged on the front end of the lever arm, and the adjutage front end sets balance ring, institute State and electric hoisting device or manual hoisting device are set in balance ring.

2. substation equipment maintenance and repair small space boom hoisting as claimed in claim 1, it is characterised in that：The balance ring is opened for one Mouth and the ring frame that can be closed, the ring frame and the rotatable structure of formation of the front end of the adjutage, ensure annular Frame remains horizontal level in each angle that tackling system moves.

3. substation equipment maintenance and repair small space boom hoisting as claimed in claim 2, it is characterised in that：The ring frame inner wall lining Batten or rubber pad.

4. substation equipment maintenance and repair small space boom hoisting as claimed in claim 2, it is characterised in that：The manual hoisting device includes Supporting rod and the manual arm being connected with the supporting rod, double bails, double bails are set on the manual arm Tackle pulley is connected, the tackle pulley connects hand-operated rocker arm by Lanyard, and the hand-operated rocker arm is arranged on mobile foundation.

5. substation equipment maintenance and repair small space boom hoisting as claimed in claim 4, it is characterised in that：The tackle pulley includes fixed sliding Wheel and the running block set below the fixed pulley.

6. substation equipment maintenance and repair small space boom hoisting as claimed in claim 2, it is characterised in that：The electric hoisting device includes Hood type hanging ring and the electronic zipper mechanism being connected with the hood type hanging ring.

7. substation equipment maintenance and repair small space boom hoisting as claimed in claim 6, it is characterised in that：The electronic zipper mechanism bag Enclosing wire rope draws high part, hydraulic cylinder and motor-operating mechanism, and the motor-operating mechanism is arranged on mobile foundation, passes through Hydraulic cylinder drives steel wire rope to draw high part action, realizes lifting；The hydraulic cylinder is arranged on inside lever arm front end.

8. substation equipment maintenance and repair small space boom hoisting as claimed in claim 6, it is characterised in that：Outside the hood type hanging ring Week sets a certain number of suspension hooks.

9. substation equipment maintenance and repair small space boom hoisting as claimed in claim 6, it is characterised in that：The hood type hanging ring lower end The circular sliding slot of connection, rotating weight can be easily installed in lifting.