CN216235773U

CN216235773U - Tower machine converter repayment electric wire netting all-in-one

Info

Publication number: CN216235773U
Application number: CN202122791557.XU
Authority: CN
Inventors: 董际伟
Original assignee: Jinan Zhengrun Intelligent Technology Co ltd
Current assignee: Jinan Zhengrun Intelligent Technology Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-08
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses a tower crane frequency converter feedback power grid all-in-one machine, which comprises a box body, wherein a power distribution cavity is arranged on the box body, a plurality of power distribution devices are arranged in the power distribution cavity, three four-quadrant frequency converters are inserted at the lower end of the box body, the output ends of the three four-quadrant frequency converters are connected with a power supply end and a power utilization end through the power distribution devices, the upper ends of the four-quadrant frequency converters are provided with hangers, the four-quadrant frequency converter to be maintained is dropped on the ground for maintenance through arranging the winding drum and the brake box, through the headstock that sets up, hoist the four-quadrant converter, utilize the powerful wind-force of tower machine high latitude to need not electric power and can accomplish the promotion to the four-quadrant converter, the maintenance and the change of the four-quadrant converter of being convenient for, more can accomplish the maintenance to tower machine converter repayment electric wire netting all-in-one when the trouble outage, reduced tower machine converter repayment electric wire netting all-in-one trouble and to the interference of tower machine normal use.

Description

Tower machine converter repayment electric wire netting all-in-one

Technical Field

The utility model belongs to the technical field of power distribution of tower cranes, and particularly relates to a tower crane frequency converter feedback power grid all-in-one machine.

Background

The tower crane is a tower crane for short, the tower crane is the most common hoisting equipment on the construction site, is lengthened (high) by one section and one section, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction. The tower crane is also an indispensable hoisting device on a construction site.

At present, motors of three large mechanisms of most tower cranes are controlled by frequency converters, and an alternating-current frequency-conversion speed regulation system is widely braked by simple energy consumption, so that the defects of electric energy waste, serious resistance heating, poor rapid braking performance and the like exist. When the asynchronous motor is frequently braked, the adoption of the feedback braking is a very effective energy-saving method, and the damage to the environment and equipment during braking is avoided. The method has satisfactory effect in the industries of electric locomotives, oil extraction and the like. Particularly, the power of a motor of the tower crane is large, the rotational inertia of the equipment is large, the tower crane belongs to a repeated short-time continuous working system, the deceleration and amplitude reduction from high speed to low speed is large, the braking time is short, and the tower crane needs strong braking. In order to improve the electricity-saving effect and reduce the energy loss in the braking process, the deceleration energy is recovered and fed back to the power grid, and when the energy-saving effect is achieved, a four-quadrant frequency converter is also required to be fed back to the power grid.

Among the prior art, tower crane frequency conversion equipment is mostly direct mount in tower crane balance arm switch board the inside, though can avoid the sunlight to penetrate directly, but the leakproofness in the switch board is relatively poor, and it is very easily rusty to cause electron device, can not carry out comprehensive protection to the converter, needs to carry out periodic clearance to the converter and maintains, and the mounted position of converter leads to the converter not convenient to take off the maintenance, for this we propose a tower crane converter repayment electric wire netting all-in-one.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tower crane frequency converter feedback power grid all-in-one machine to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a tower machine converter repayment electric wire netting all-in-one, includes the box, be provided with the distribution chamber on the box, the distribution intracavity is provided with a plurality of distribution equipment, the lower extreme of box is inserted and is equipped with three four-quadrant converter, and is three four-quadrant converter output passes through distribution equipment and connects feed end and power consumption end, the upper end of four-quadrant converter is provided with the hangers, the upper end of box is rotated and is connected with the reel, the wiring has the haulage rope on the reel, and the haulage rope end is provided with the couple, couple and hangers phase-match, the both sides of reel are provided with braking case and headstock respectively.

Preferably, the distribution chamber middle part is provided with the baffle, the baffle dorsal part is provided with the wire holder, wire holder and power supply end, power consumption end and four-quadrant converter electric connection.

Preferably, the front surface of the box body is provided with a fastening screw hole corresponding to the position of the hanging lug, the fastening screw hole is internally threaded with a fastening screw, and the fastening screw penetrates through the hanging lug.

Preferably, the bottom of the power distribution cavity is movably inserted with a tray, and the tray is of a square disc structure with an opening at the upper end.

Preferably, the upper end of the box body is provided with a guide wheel close to the front side.

Preferably, a sliding seat is arranged in the inner cavity of the brake box, a brake push rod is movably inserted in the sliding seat, the brake push rod is of a square rod-shaped structure, the inner end of the square rod-shaped structure is fixedly connected with a friction block, a brake screw rod is connected to the front end of the brake push rod in a threaded manner, the brake screw rod is rotatably connected to the front side wall of the brake box, a spring is arranged between the inner end of the brake screw rod and the brake push rod, a friction brake wheel is fixedly connected to the rear end of the brake box and penetrates through a rotating shaft on one side of the winding drum corresponding to the brake box, and the friction brake wheel is abutted to the friction block on the inner end of the brake push rod.

Preferably, the upper end of the power box is rotatably connected with a wind blade, a rotating shaft of the wind blade penetrates through the power box, a hydraulic telescopic rod is arranged in the power box, the upper end of a piston rod of the hydraulic telescopic rod is rotatably connected with a clutch transmission gear, the clutch transmission gear is in transmission connection with a winding drum rotating shaft and the lower end of the rotating shaft of the wind blade through a bevel gear transmission mechanism, an oil injection cylinder is arranged on one side of the bottom of the hydraulic telescopic rod, an oil injection screw rod is in threaded connection with the position of the oil injection cylinder corresponding to the front side of the power box, and the inner end of the oil injection screw rod is rotatably connected with a piston of the oil injection cylinder.

Compared with the prior art, the utility model has the beneficial effects that:

(1) this tower machine converter repayment electric wire netting all-in-one, through setting up reel and brake box, make the reel slowly unreel under the braking of brake box, the four-quadrant converter that will treat to maintain drops to subaerially, maintain, power box through setting up, make the four-quadrant converter maintain the completion back, rotate through connecting power box output and reel, make the rolling of power box drive reel, hoist the four-quadrant converter, utilize the powerful wind-force of tower machine high latitude to need not electric power and can accomplish the promotion to the four-quadrant converter, be convenient for the maintenance and the change of four-quadrant converter, more can accomplish the maintenance to tower machine converter electric wire netting repayment all-in-one when the trouble outage, tower machine converter repayment electric wire netting all-in-one trouble has been reduced and tower machine converter repayment electric wire netting all-in-machine trouble interference to tower machine normal use.

(2) This tower machine converter repayment electric wire netting all-in-one, through the tray that sets up, the tray can take out and set up under distribution equipment to when distribution equipment maintains, be used for preventing repair tools and accepting the part under the last dismantlement of distribution equipment, avoid the unexpected landing of tiny part to lead to maintaining or the distribution equipment after the change can not normally repack the condition emergence, improved the convenience when distribution equipment maintains the change.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side cross-sectional view of the center position of the present invention;

FIG. 3 is a side cross-sectional view of the center of the brake housing of the present invention;

fig. 4 is a side sectional view of the center of the power box according to the present invention.

In the figure: 1. a box body; 2. a power distribution cavity; 3. a power distribution device; 4. a four-quadrant frequency converter; 5. a reel; 6. a guide wheel; 7. a brake box; 8. a power box; 9. hanging a lug; 10. a partition plate; 11. a wire holder; 12. a tray; 13. a friction brake wheel; 14. a brake push rod; 15. a slide base; 16. braking the screw rod; 17. a wind blade; 18. a clutch transmission gear; 19. a hydraulic telescopic rod; 20. oiling a screw rod; 21. and (5) injecting an oil cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a tower crane frequency converter feedback power grid integrated machine, which comprises a box body 1, a power distribution cavity 2 is arranged on the box body 1, a plurality of power distribution devices 3 are arranged in the power distribution cavity 2, the power distribution devices 3 are one of contactors, relays and air switches, three four-quadrant frequency converters 4 are inserted at the lower end of the box body 1, the output ends of the three four-quadrant frequency converters 4 are connected with a power supply end and a power utilization end through the power distribution devices 3, the four-quadrant frequency converters 4 have the function of energy bidirectional flow, not only can absorb the energy of a power grid to drive a motor, but also can send the energy generated by the motor under the braking work back to the power grid, lugs 9 are arranged at the upper ends of the four-quadrant frequency converters 4, a winding drum 5 is rotatably connected at the upper end of the box body 1, a traction rope is wound on the winding drum 5, and the tail end of the traction rope is provided with a hook which is matched with the hanging lug 9, and the two sides of the winding drum 5 are respectively provided with a brake box 7 and a power box 8.

In this embodiment, preferably, a partition plate 10 is disposed in the middle of the power distribution cavity 2, a wire holder 11 is disposed on the back side of the partition plate 10, and the wire holder 11 is electrically connected to the power supply end, the power utilization end and the four-quadrant frequency converter 4; through the baffle 10 that sets up, the baffle 10 separates wire holder 11 and distribution equipment 3, avoids wire holder 11 department to discharge the influence to distribution equipment 3, has improved distribution equipment 3's life.

In this embodiment, preferably, the front surface of the box body 1 is provided with a fastening screw hole corresponding to the position of the hanging lug 9, and the fastening screw hole is internally threaded with a fastening screw which penetrates through the hanging lug 9; the fastening screw piece hangers 9 are fixed through arrangement, so that the four-quadrant frequency converter 4 is fixed, and the four-quadrant frequency converter 4 is convenient to install and detach.

In this embodiment, preferably, the bottom of the power distribution cavity 2 is movably inserted with a tray 12, and the tray 12 is a square disc structure with an opening at the upper end; through the tray 12 that sets up, tray 12 can take out and set up under distribution equipment 3 to when distribution equipment 3 maintains, be used for preventing repair tools and accepting the part of dismantling on distribution equipment 3, avoid the unexpected landing of tiny part to lead to the circumstances of maintaining or the distribution equipment 3 after the change unable normal repacking to take place, improved the convenience when distribution equipment 3 maintains the change.

In this embodiment, preferably, a guide wheel 6 is arranged on the upper end of the box body 1 near the front side; through leading wheel 6 that sets up for haulage rope on the reel 5 can be connected with four-quadrant converter 4 after 6 direction through leading wheel, avoids the friction of haulage rope and 1 front side of box, has guaranteed that the normal receipts of reel 5 unreel.

In this embodiment, preferably, a sliding seat 15 is arranged in an inner cavity of the brake box 7, a brake push rod 14 is movably inserted in the sliding seat 15, the brake push rod 14 is a square rod-shaped structure with a friction block fixedly connected at the inner end, a brake screw 16 is connected to the front end of the brake push rod 14 in a threaded manner, the brake screw 16 is rotatably connected to the front side wall of the brake box 7, a spring is arranged between the inner end of the brake screw 16 and the brake push rod 14, a friction brake wheel 13 is fixedly connected to the side of the winding drum 5 corresponding to the brake box 7 after a rotating shaft penetrates through the brake box 7, and the friction brake wheel 13 abuts against the friction block at the inner end of the brake push rod 14; pressure between the brake push rod 14 and the friction brake wheel 13 is adjusted through setting up brake screw 16, and the friction is carried out the friction and is slowed down to unreeling of reel 5 through the friction of friction brake wheel 13 and brake push rod 14, avoids four-quadrant converter 4 to transfer the speed too fast, has guaranteed that four-quadrant converter 4's safety is transferred.

In the embodiment, preferably, the upper end of the power box 8 is rotatably connected with a wind blade 17, a rotating shaft of the wind blade 17 penetrates through the power box 8, a hydraulic telescopic rod 19 is arranged in the power box 8, the upper end of a piston rod of the hydraulic telescopic rod 19 is rotatably connected with a clutch transmission gear 18, the clutch transmission gear 18 is in transmission connection with a rotating shaft of the winding drum 5 and the lower end of the rotating shaft of the wind blade 17 through a bevel gear transmission mechanism, one side of the bottom of the hydraulic telescopic rod 19 is provided with an oil injection cylinder 21, the front side of the power box 8 is in threaded connection with an oil injection screw 20 corresponding to the position of the oil injection cylinder 21, and the inner end of the oil injection screw 20 is rotatably connected with a piston of the oil injection cylinder 21; the oil injection screw rod 20 is arranged to rotate, the oil injection screw rod 20 drives the piston of the oil injection cylinder 21 to move, so that hydraulic oil in the oil injection cylinder 21 is pumped in or pumped out, the clutch transmission gear 18 is driven to lift in the hydraulic telescopic rod 19, the clutch between the clutch transmission gear 18 and the rotating shaft of the winding drum 5 and the rotating shaft of the wind blade 17 is switched, the power output of the power box 8 and the on-off switching of the rotating shaft of the winding drum 5 are facilitated, and the rotation of the winding drum 5 is conveniently controlled.

The working principle and the using process of the utility model are as follows: when the device is used, the power supply end and the power utilization end of the tower crane are controlled to be communicated by matching the power distribution equipment 3 and the four-quadrant frequency converter 4, so that the work of the tower crane is controlled, when the frequency converter of the tower crane is fed back to the four-quadrant frequency converter 4 in the power grid integrated machine to have a fault or needs to be maintained, the winding drum 5 can be slowly unwound under the braking of the braking box 7 by arranging the winding drum 5 and the braking box 7, the four-quadrant frequency converter 4 to be maintained is dropped on the ground for maintenance, after the maintenance of the four-quadrant frequency converter 4 is completed by the arranged power box 8, the output end of the power box 8 is connected with the winding drum 5 to rotate, the winding drum 5 is driven by the power box 8 to wind up the four-quadrant frequency converter 4, the four-quadrant frequency converter 4 can be lifted without electric power by utilizing the powerful wind power of the high altitude of the tower crane, and the maintenance and the replacement of the four-quadrant frequency converter 4 are convenient, the maintenance of the tower crane frequency converter feedback power grid all-in-one machine can be completed when the fault is cut off, and the interference of the tower crane frequency converter feedback power grid all-in-one machine fault on the normal use of the tower crane is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tower machine converter repayment electric wire netting all-in-one, includes box (1), be provided with distribution chamber (2) on box (1), be provided with a plurality of distribution equipment (3) in distribution chamber (2), the lower extreme of box (1) is inserted and is equipped with three four-quadrant converter (4), and is three the power supply end is connected through distribution equipment (3) to four-quadrant converter (4) output and is held with the electricity, its characterized in that: the upper end of four-quadrant converter (4) is provided with hangers (9), the upper end of box (1) is rotated and is connected with reel (5), the wire-wound is connected with the haulage rope on reel (5), and the haulage rope end is provided with the couple, couple and hangers (9) phase-match, the both sides of reel (5) are provided with brake box (7) and headstock (8) respectively.

2. The tower crane frequency converter feedback power grid all-in-one machine as claimed in claim 1, wherein: distribution chamber (2) middle part is provided with baffle (10), baffle (10) dorsal part is provided with wire holder (11), wire holder (11) and power supply end, power consumption end and four-quadrant converter (4) electric connection.

3. The tower crane frequency converter feedback power grid all-in-one machine as claimed in claim 1, wherein: the front surface of the box body (1) is provided with fastening screw holes corresponding to the positions of the hanging lugs (9), the fastening screw holes are connected with fastening screws in an internal thread mode, and the fastening screws penetrate through the hanging lugs (9).

4. The tower crane frequency converter feedback power grid all-in-one machine as claimed in claim 1, wherein: the bottom of the power distribution cavity (2) is movably inserted with a tray (12), and the tray (12) is of a square disc structure with an opening at the upper end.

5. The tower crane frequency converter feedback power grid all-in-one machine as claimed in claim 1, wherein: the upper end of the box body (1) is provided with a guide wheel (6) close to the front side.

6. The tower crane frequency converter feedback power grid all-in-one machine as claimed in claim 1, wherein: brake box (7) inner chamber is provided with slide (15), slide (15) internalization is pegged graft and is had brake push rod (14), brake push rod (14) are the square rod-shaped structure of inner end fixedly connected with clutch blocks, and the front end threaded connection of brake push rod (14) has brake screw (16), on brake screw (16) rotate the front side wall of connecting with brake box (7), and be provided with the spring between brake screw (16) inner end and brake push rod (14), reel (5) correspond brake box (7) one side pivot and run through brake box (7) back fixedly connected with friction brake wheel (13), friction brake wheel (13) offset with brake push rod (14) inner end clutch blocks.

7. The tower crane frequency converter feedback power grid all-in-one machine as claimed in claim 1, wherein: the upper end of headstock (8) is rotated and is connected with wind-force blade (17), and wind-force blade (17) pivot runs through headstock (8) and sets up, be provided with hydraulic telescoping rod (19) in headstock (8), the piston rod upper end of hydraulic telescoping rod (19) is rotated and is connected with separation and reunion drive gear (18), separation and reunion drive gear (18) all are connected through the transmission of bevel gear drive mechanism with the pivot lower extreme of reel (5) pivot and wind-force blade (17), the bottom one side of hydraulic telescoping rod (19) is provided with annotates hydro-cylinder (21), the front side of headstock (8) corresponds annotates hydro-cylinder (21) position threaded connection and has oiling screw rod (20), the inner end of oiling screw rod (20) is connected with the piston rotation of annotating hydro-cylinder (21).