CN2790024Y

CN2790024Y - High-torque three-phase asynchronous motor for engineering drilling machine

Info

Publication number: CN2790024Y
Application number: CN 200520025789
Authority: CN
Inventors: 潘立国; 李桂莲; 房淑娟; 齐春立; 于芳; 付华荣; 傅莉
Original assignee: TIANJIN CITY SPECIAL ELECTRIC MACHINE INST
Current assignee: TIANJIN CITY SPECIAL ELECTRIC MACHINE INST
Priority date: 2005-05-11
Filing date: 2005-05-11
Publication date: 2006-06-21
Anticipated expiration: 2015-05-11

Abstract

The utility model relates to a high-torque three-phase asynchronous motor for engineering drilling machines. The utility model is mainly provided with a machine seat, a stator, a stator winding, a rotor, a shaft, a flange end cover, a fan, a waterproof ring and a junction box, wherein the pole number of the motor is 4/8 pole, the stator winding has a delta connecting mode at high speeds and a tee joint connecting mode at low speeds, a groove of the rotor is designed into a composite groove shape and is combined with a deep groove with two cages, the rotor uses aluminum alloy with high resistivity as materials of conductive bodies, both end surfaces of the machine seat are provided with eight lugs, wherein four lugs are through lugs, the exterior and the interior of the flange end cover are both provided with reinforcing ribs, the waterproof ring is arranged under the fan and forms a combined seal together with an oil seal, and the junction box is arranged on a non-shaft extending end. A seat of the junction box and a cover of the junction box are sealed by a structure with a working surface with a spigot. The utility model has the advantages that the utility model can realize the regulation of variable speeds with constant power, ensures better starting characteristics of motors, is suitable for the construction of various complicated strata, can increase construction efficiency and can accelerate the speed of engineering construction.

Description

Engineering driller high torque (HT) threephase asynchronous

Technical field

The utility model belongs to the AC three-phase asynchronous motor technical field, particularly relates to a kind of engineering driller high torque (HT) threephase asynchronous that high starting torque, high overload ability and permanent power pole-changing are adjusted that has.

Background technology

Engineering driller is to be the building trade basic engineering construction supporting motor of rig with the high torque (HT) threephase asynchronous, can be widely used in the driven by power of the used rigs of various foundation construction engineerings such as urban skyscraper, subway, bridge, harbour and river dike.At present, general common single speed or the common double electric motor with speed of using of engineering driller drives, there is following defective in its structure: one, common double speed stator winding connection type adopts high speed YY to connect, low speed △ connects, when motor need can not reach permanent power pole changing when at a high speed switching to low cruise; Its two, be to improve the motor starting torque, rotor is designed to deep trouth more or adopts the high resistance electric conducting material, but still can not realize the specific (special) requirements of rig to the motor starting torque, and construction accidents such as bit freezing, bury drills and broken pile take place in work progress easily; Its three, the every face in support two ends mostly is four lugs and distributes, and particularly in the joint portion of vertical-horizontal distribution fin logical lug is not set, and therefore is difficult to satisfy drilling machine requirement to electrical machinery intensity under comparatively abominable service condition; Its four, the motor hermetically-sealed construction adopts the sealing of oil sealing or throw rijng usually, is difficult to satisfy the requirement of the outdoor use of rig to its sealing property when adopting the VI type to install; Its five, the motor connecting cartridge operated by rotary motion is unfavorable for the drilling machine wiring at the shaft extension end, brings many troubles to constructing operation.

Summary of the invention

The utility model provides a kind of engineering driller high torque (HT) threephase asynchronous with high starting torque, high overload ability and permanent power pole-changing for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

A kind of engineering driller high torque (HT) threephase asynchronous, it mainly contains support, stator, stator winding, rotor, axle, the flange end cap, fan, waterproof ring and terminal box, it is characterized in that: the number of poles of motor is 4/8 utmost point, described stator winding connection type: the high speed wiring is that △ connects, the low speed wiring is that YY connects, rotor is designed to the compound flute profile of two cage deep trouth combinations, rotor adopts High Resistivity Aluminium Alloy to make conductor material, be provided with eight lugs in the support both ends of the surface, wherein four are designed to logical lug and are arranged on the fin joint portion that vertical-horizontal distributes, flange end cap outside and inside are equipped with reinforcement, inner reinforcement end face is broken line shape, waterproof ring is packed in below the fan, and constitutes combination sealing with oil sealing, and terminal box is installed in non-shaft stretching end.Which is provided with two wire holes, described wire hole direction down, link cover of FIG and junction box seat machined surface adopt the fixing structure sealing.

The utility model can also adopt following technical measures:

The stator winding wiring adopts △ to connect at a high speed, low speed YY connects, stator winding is made of mutually 12 utmost points, every phase winding is divided into two branch roads, each branch road is organized forward series connection mutually by the interval utmost point, and two branch roads oppositely connect, by two branch road tie point taps, constitute variable-pole winding, realize permanent power pole changing.

Described flange end cap outside is provided with 16 reinforcements, and inside is provided with 10 reinforcements.

Advantage and the good effect that the utlity model has are: connect because stator winding of the present utility model adopts high speed △ to connect with low speed YY, make motor have identical power under two kinds of rotating speeds, can realize the adjustment of permanent power speed change; Its rotor structure has utilized two cages, deep trouth and High Resistivity Aluminium Alloy conductor material, thereby guaranteed the starting characteristic that motor is good, be applicable to the construction of various bad grounds, can effectively avoid the generation of construction accidents such as bit freezing in the work progress, bury drills and broken pile; Structures such as the support of motor and flange end cap all improve to some extent, make its mechanical strength and seal the reinforcement that all has in various degree, not only can satisfy the requirement that drilling machine uses under severe construction conditions comparatively, but also can improve efficiency of construction, accelerate engineering construction speed.

Description of drawings

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

Fig. 2 is the utility model stator winding winding diagram;

Fig. 3 is the utility model rotor slot shape figure;

Fig. 4 is the schematic diagram of the utility model flange end cap reinforcement;

Fig. 5 is the schematic layout pattern of the utility model waterproof ring, oil sealing and fan;

Fig. 6 is the utility model terminal box schematic diagram;

Fig. 7 is the logical lug schematic cross-section of the utility model.

Among the figure: 1,2 shaft extension keys, 3 flange end caps, 3-1 reinforcement, 4 supports, 5 stators, 6 rotors, 7 stator winding, 8 end caps, 9 fans, 10 waterproof rings, 11 oil sealings, 12 fan housings, 13 terminal boxes, 13-1 junction box seat, 13-2 connector cover, 14 wire hole swivel nuts, 15 towers, 16 suspension ring, 17 fin.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1-Fig. 7, engineering driller high torque (HT) threephase asynchronous, it mainly contains support 4, stator 5, stator winding 7, rotor 6, axle 1, shaft extension key 2, flange end cap 3, fan 9, waterproof ring 10 and terminal box 13, shaft extension key 2 is connected by keyway with axle 1, at the motor bed-plate middle part suspension ring 16 are housed, the number of poles of motor is 4/8 utmost point, for guaranteeing that motor has identical power under two kinds of rotating speeds, the stator winding connection type is designed to: the high speed wiring is that △ connects, the low speed wiring is that YY connects, stator winding is made of mutually 12 utmost points, and every phase winding is divided into two branch roads, and each branch road is organized forward series connection mutually by the interval utmost point, two branch roads oppositely connect, by two branch road tie point taps, constitute variable-pole winding, realize permanent power pole changing.Make the locked-rotor torque multiple of motor under low speed greater than 3.2 times, the breakdown torque multiple is greater than 3.3 times; The locked-rotor torque multiple is greater than 2.2 times down at a high speed, and the breakdown torque multiple is greater than 2.7 times; The locked rotor current multiple of motor is all less than 6 times under two kinds of rotating speeds.Rotor is designed to the compound flute profile of two cage deep trouth combinations, be provided with eight lugs 15 in the support both ends of the surface, wherein four are designed to logical lug, and be arranged on fin 17 joint portions that vertical-horizontal distributes, the support mechanical strength is significantly strengthened, also can be satisfied drilling machine requirement to electrical machinery intensity under comparatively abominable service condition.Flange end cap 3 outsides and inside are equipped with reinforcement 3-1, and flange end cap outside is provided with 16 reinforcements, and inside is provided with 10 reinforcements, and its inner reinforcement end face is broken line shape, thereby has strengthened the mechanical strength of flange end cap.Waterproof ring 10 is installed in below the fan 9, constitutes combination sealing with oil sealing 11, so not only be fit to the operational environment of drilling machine, and dismounting is very convenient.Terminal box 13 is installed in non-shaft stretching end, which is provided with two wire holes, described wire hole direction down so that cable connection, connector cover 13-2 and junction box seat 13-1 adopt the sealing of machined surface fixing structure, to guarantee the optimal seal effect.End cover for motor 8 is packed on the support end face by lug 15, and fan housing 12 is connected with the end cap lug, and wire hole swivel nut 14 is installed on the junction box seat 13-1.

Claims

1. engineering driller high torque (HT) threephase asynchronous, it mainly contains support, stator, stator winding, rotor, axle, the flange end cap, fan, waterproof ring and terminal box, it is characterized in that: the number of poles of motor is 4/8 utmost point, described stator winding connection type: the high speed wiring is that Δ connects, the low speed wiring is that YY connects, rotor is designed to the compound flute profile of two cage deep trouth combinations, rotor adopts High Resistivity Aluminium Alloy to make conductor material, be provided with eight lugs in the support both ends of the surface, wherein four are designed to logical lug, and be arranged on the fin joint portion that vertical-horizontal distributes, flange end cap outside and inside are equipped with reinforcement, inner reinforcement end face is broken line shape, and waterproof ring is installed in below the fan, and constitutes combination sealing with oil sealing, terminal box is installed in non-shaft stretching end, which is provided with two wire holes, described wire hole direction down, junction box seat and connector cover adopt the sealing of machined surface fixing structure.

2. engineering driller high torque (HT) threephase asynchronous according to claim 1, it is characterized in that: stator winding wiring high speed Δ connects, low speed YY connects, stator winding is made of mutually 12 utmost points, and every phase winding is divided into two branch roads, and each branch road is organized forward series connection mutually by the interval utmost point, two branch roads oppositely connect, by two branch road tie point taps, constitute covert winding, realize permanent power pole changing.

3. engineering driller high torque (HT) threephase asynchronous according to claim 1 is characterized in that: described flange end cap outside is provided with 16 reinforcements, and inside is provided with 10 reinforcements.