CN2818435Y

CN2818435Y - Miniature electric hoister

Info

Publication number: CN2818435Y
Application number: CN 200520114242
Authority: CN
Inventors: 余万松; 蒋孟好; 金德斋
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-25
Filing date: 2005-07-25
Publication date: 2006-09-20
Anticipated expiration: 2015-07-25

Abstract

The utility model discloses a kind of later-model microcomputer cucurbit, include frame (29), motor part (28), speed reduction gearing (25), jack up unit (24), inhibiting device (18) and electric control system, it is characterized in that described motor part (28) is the motor of charged magnetic brake, rear side housing (1) is stretched out in the rotating shaft of described motor (4), described magnet stopper is mainly by electromagnet (12), coil (9), retarding spring (11), brake plate (8) and friction lining (10) constitute, described electromagnet is fixed on motor rear end by connecting element (2) and covers, described coil is embedded in the electromagnet, described brake plate is enclosed within on the machine shaft, and on brake plate, be provided with knock hole (3), insert in the knock hole end of described connecting element, on the described machine shaft that stretches out rear side housing fan (5) is installed, described friction lining is arranged on the end face of fan, and described retarding spring is installed in the hole of electromagnet.The magnet stopper that the utility model adopts makes this electric block safety and steady that is in operation, good braking effect, the service life of having improved electric block.

Description

Later-model minisize electric hoist

[technical field]

The utility model relates to a kind of lifting equipment, particularly be a kind of electric block.

[background technology]

In the prior art, the electric block major part all is by frame, the motor part, speed reduction gearing, jack up unit, inhibiting device and electric control system constitute, in these electric blocks, in the brake equipment of its motor part, the electric block that structure is different, the structure of its brake equipment is also different, wherein there is a kind of comparatively representational brake equipment to be called plate disc brake, this drg is by brake strip, brake plate, brake armature, retarding spring and yoke assembling are formed, and these parts also are installed in inside, motor outer end, the brake plate of this drg is the disk of band center round platform, and the center has splined hole, brake strip, brake armature, the yoke assembling is sleeved on the brake plate round platform successively.Though the drg of this structure is compared with the drg of other structure, its effect improves to some extent, to being much improved in service life of the motor of electric block part; But, its brake disc of the drg of this structure is easy to move radially along machine shaft, and can rotate with machine shaft, influence the deceleration and stopping performance and the effect of drg, reduced electric block barrier propterty at work, thereby the lifting velocity of electric block, the service life of having reduced electric block have also been influenced.

[summary of the invention]

In view of the problem that exists in the known technology, the technical problems to be solved in the utility model provides a kind of deceleration and stopping performance and effective, increases electric block barrier propterty at work, and improves the later-model minisize electric hoist in its service life.For reaching this purpose, the utility model takes following technical scheme to finish: a kind of later-model minisize electric hoist, include frame, the motor part, speed reduction gearing, jack up unit, inhibiting device and electric control system, it is characterized in that described motor section is divided into the motor of charged magnetic brake, rear side housing is stretched out in the rotating shaft of described motor, described magnet stopper is mainly by electromagnet, coil, retarding spring, brake plate and friction lining constitute, described electromagnet is fixed on motor rear end by connecting element and covers, described coil is embedded in the electromagnet, described brake plate is enclosed within on the machine shaft, and on brake plate, be provided with knock hole, the end of described connecting element is inserted on the machine shaft that stretches out rear side housing described in the knock hole fan is installed, described friction lining is arranged on the end face of fan, and described retarding spring is installed in the hole of electromagnet.Described inhibiting device includes position-limited rack, extension spring, limiting stopper and limit switch, described position-limited rack is hinged on the casing of speed reduction gearing, extension spring and limit switch are installed on the motor body, and an end of position-limited rack is connected with extension spring, and described limiting stopper is installed on the steel rope of jack up unit.

The utility model is embedded in coil in the electromagnet, make the structure of drg compact more, knock hole is set on brake plate, and the connecting element of fixed electromagnet body is inserted in the knock hole, effectively brake plate is carried out guide-localization, and prevent that brake plate from rotating on machine shaft, thereby its deceleration and stopping performance and effect have been improved, the raising of its deceleration and stopping performance and effect, make in the working process of electric block and reduced failure frequency, so its barrier propterty is also increased, and prolonged the service life of electric block simultaneously; On the described machine shaft that stretches out rear side housing fan is installed, described friction lining is arranged on the end face of fan, the work of fan, can reduce the operating temperature of motor, guarantee the normal operation of motor, and the installation of the setting of its limit switch, strengthened the barrier propterty of this electric block more.

For the axially movable scope of brake plate can be regulated, on machine shaft, be provided with setting nut, regulate the position of fan on machine shaft, also just regulated the axially movable scope of brake plate.

[description of drawings]

Further describe the details of embodiment below more in conjunction with the accompanying drawings.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model frame embodiment 1;

Fig. 3 is the structural representation of the utility model frame embodiment 2;

Fig. 4 is the cutaway view of Fig. 2 along A-A.

[specific embodiment]

With reference to Fig. 1, this electric block, include frame 29, jack up unit 24, speed reduction gearing 25, motor part 28, inhibiting device 18 and electric control system, described frame 29 can be designed to two kinds of fixed type and trolley types, and present embodiment specifically describes the frame of its dual mode.Fixed type frame (with reference to Fig. 2) is to be welded by bearing seat 34, end plate 35, outer casing 36, inner casing 33, fixed block 32 etc., and hex bolt 31 is fixing with fixed block 32, with bolt, nut handgrip 30 is connected on the frame.Such structure has increased the intensity and the rigidity of frame.Fixed block 32 curves U-shaped by steel plate, has opened arc groove in two sides, and when on the cross bar that will be installed in minisize electric hoist support, the arc groove of fixed block 32 just can accurately be located.Trolley type frame (with reference to Fig. 3) is developed by the fixed type frame, he is that the upper end with frame curves U-shaped, two side hole at the U-shaped face, and roller shaft 39 is installed in the hole, roller 37 is installed on roller shaft 39, curved surface of design on this roller 37 is guaranteed to contact with the track actv. and can turn on the bend of certain limit; Inboard at roller 37 is provided with step, and roller 37 can not be de-orbited when rolling.Handlebar 40 is installed in two sides at body, replaces the handgrip in the fixed type frame, and other parts are identical with the fixed type frame.This frame rolling-operation in orbit when its work can tow again during carrying on the ground.Include reel and steel rope 23 in the described jack up unit 24, an end of drum shaft 22 is installed in the bearing seat 34 of frame, and the other end is contained in the bearing of drop-gear box, and is that the gear-driven big gear wheel 27 in the second stage is connected by the key and the output gear of drop-gear box.For lifting velocity that improves the miniature cucurbit of collapsing and the life-span that prolongs steel rope, strengthened tube rope diameter ratio, adopt large diameter reel.In order to increase the lifting altitude of electric block, must increase the length of steel rope 23, correspondingly increase the rib height of volume, so strengthened the diameter of left and right baffle plate.On first member plate, be welded with wedge shape geosynclinal block 21 and a hole that allows steel rope pass through, the end of steel rope 23 is passed in the hole be placed on the geosynclinal block 21, stop tightly with voussoir again.The front end cover of the end cap double as electrical motor of the drop-gear box in the described speed reduction gearing 25, deceleration box and end cap are aluminium casting, and packing seal is arranged between the two, use finger setting, and screw is fastening.The secondary spur gear drive is arranged in the drop-gear box, the leading section of machine shaft 4 is made the gear-driven miniature gears 13 of the first order, the gear-driven big gear wheel 15 of the first order is installed on the gear wheel shaft of the gear-driven miniature gears in the second stage, and use key connecting, the gear-driven big gear wheel 27 in the second stage is installed on the drum shaft 22, and uses key connecting.Machine shaft 4 is the input shaft of drop-gear box, and drum shaft 22 is the output shaft of drop-gear box, and diaxon is a coaxial arrangement, so reel and electrical motor are coaxial arrangement.Described motor section is divided into the motor of charged magnetic brake, and motor is an asynchronous motor, and its stator coil is the single-phase connections of three phase windings, has reduced the intensity of current when steel rope descends, and temperature rise is reduced, thereby improved work efficiency.Rear side housing 1 is stretched out in the rotating shaft 4 of described motor, described magnet stopper mainly is made of electromagnet 12, coil 9, retarding spring 11, brake plate 8 and friction lining 10, described electromagnet 12 is fixed on the back end cover for motor 1 by socket head cap screw 2, described coil 9 is embedded in the electromagnet 12, described brake plate 8 is enclosed within on the machine shaft 4, and on brake plate 8, be provided with knock hole 3, insert in the knock hole 3 end of described socket head cap screw 2, brake plate 8 is played the guide-localization effect, and stopped the brake plate rotation.The end face of fan 5 is pasted friction lining 10, fan cooperates with machine shaft 4, and drive by flat key, rotation setting nut 6 is the axial location of scalable fan 5 on machine shaft 4, brake plate 8 axially movable scopes have also just been regulated, tighten the holding screw in the setting nut 6 after adjusting is finished, the elastic force of compression spring 7 remains on the position that mixes up fan 5.Described retarding spring 11 is installed in the hole of electromagnet 12, and the elastic force of this retarding spring 11 makes brake plate 8 be pressed on friction lining 10 on the fan, produces friction moment rotating shaft can not be rotated, and reaches the purpose of braking.When electromagnet coil power, electromagnet 12 produces magnetic force and holds brake plate 8, forms the gap between brake plate 8 and the friction lining 10, has eliminated the braking force that friction moment forms, and rotating shaft 4 is promptly rotatable.Described inhibiting device 18 includes position-limited rack 20, extension spring 14, limiting stopper 19 and limit switch 16, and position-limited rack 20 is that the thicker round steel of usefulness bends to a cylindrical ring and a band iron 17 is welded into.One through hole is arranged in the middle of the band iron 17, screw is screwed in the screw of deceleration box lower end by the hole, make the limits frame can center on screw turns, the hole of band iron 17 ends hangs on the shackle of extension spring 14, because the pulling force of extension spring 14, band iron 17 is pressed on the spacing plane of deceleration box lower end, just in time the contact pressing of the limit switch of often opening 16, be "on" position, limit switch 16 is contained in the switch enclosure.Drive position-limited rack 20 rotations when steel rope rises to limiting stopper 19, then position-limited rack 20 overcomes the pulling force of extension spring 14 and breaks away from limit switch 16, and the normality that limit switch 16 recoveries are often left is cut off circuit, electrical motor stall, magnet stopper braking.According to the electric block of the utility model design motif made, will bring positive result of use to users.

Claims

1, a kind of later-model minisize electric hoist, include frame (29), motor part (28), speed reduction gearing (25), jack up unit (24), inhibiting device (18) and electric control system, it is characterized in that described motor part (28) is the motor of charged magnetic brake, rear side housing (1) is stretched out in the rotating shaft of described motor (4), described magnet stopper is mainly by electromagnet (12), coil (9), retarding spring (11), brake plate (8) and friction lining (10) constitute, described electromagnet (12) is fixed on the back end cover for motor (1) by connecting element (2), described coil (9) is embedded in the electromagnet (12), described brake plate (8) is enclosed within on the machine shaft (4), and on brake plate (8), be provided with knock hole (3), insert in the knock hole (3) end of described connecting element (2), on the described machine shaft (4) that stretches out rear side housing fan (5) is installed, described friction lining (10) is arranged on the end face of fan, and described retarding spring (11) is installed in the hole of electromagnet (12).

2, later-model minisize electric hoist according to claim 1 is characterized in that being provided with setting nut (6) on machine shaft (4).

3, later-model minisize electric hoist according to claim 1, it is characterized in that described inhibiting device (18) includes position-limited rack (20), extension spring (14), limiting stopper (19) and limit switch (16), described position-limited rack (20) is hinged on the casing of speed reduction gearing (25), extension spring (14) and limit switch (16) are installed on the motor body, one end of position-limited rack (20) is connected with extension spring (14), and described limiting stopper (19) is installed on the steel rope of jack up unit (24).