CN2670321Y - Rare earth permanent magnetic synchrous gearless tractor with front supporting structure - Google Patents

Abstract

The utility model relates to a new style rare earth permanent magnetic synchronous gearless tractor, mainly comprising a machine base, a motor, a brake disc, a brake and a synchro angle displacement sensor or photoelectric encoder. The tractor structural style of a traditional gearless tractor that the tractor wheel has a cantilevered structure is changed. The tractor wheel and the brake disc are changed into a front supporting structure, so the carrying capacity and the service life of a spindle are raised, and the bearing force of two side shafts are more reasonable at the same time. The bearing force of the two side shafts are essentially the same, and on axial force exists theoretically, so the whole structure of the tractor is more reasonable. A suction board of the brake is provided with an ejector rod; a braking friction wafer is corresponding to the braking surface of the brake disc. When a tractor system is power-off, the pressure of a butterfly shape spring makes the friction wafer press tightly on the brake disc in order to brake the tractor wheel. The utility model has reasonable structure, uniform system stress, less material and low cost; the rare earth permanent magnetic synchronous gearless tractor is a new style tractor.

Description

The preceding synchronous anodontia towing machine of supporting construction rare earth permanent magnet

The utility model relates to the synchronous anodontia towing machine of preceding supporting construction rare earth permanent magnet that a kind of cage lifter car is used.

Existing anodontia towing machine all adopts support end on motor base, traction sheave and braking hub (or brake disc) hang on outside the support for one, the integral installation mode is a cantilever design, because stressed member traction sheave and braking hub are cantilever design, the main shaft cantilever end is stressed excessive, generally can reach about 3～6 tons, make that so the whole strained condition of towing machine is unreasonable, the cantilever main shaft easily produces flexure deformation, has reduced the service life of axle, the front end backup bearing is stressed excessive simultaneously, and there is axial force to produce, therefore must adopts self-aligning roller bearing, increased productive costs, and the tail end bearing only plays booster action, has caused waste again.

The shortcoming that the purpose of this utility model is to overcome original structure is designed the synchronous anodontia towing machine of rare earth permanent magnet that a kind of traction sheave two ends band supports with not enough.The synchronous anodontia towing machine of this rare earth permanent magnet comprises support, motor, traction sheave, brake disc, drg and synchronizing angle displacement pickup or photoelectric encoder.Wherein support is placed on the traction sheave both sides with the strong point, and the suffered load bearings at both ends of complete machine is evenly shared, and changes projecting shaft into force-bearing situation that the freely-supported axle has improved axle, the diameter of axle can be reduced, and has improved the degree of utilization of material.Because the flexure deformation amount of freely-supported axle is little, the axial force that bearing is born reduces, so two bearings all can adopt common cylindrical roller bearing, has reduced cost of product.Motor described in the utility model is a rare earth permanent-magnet synchronization motor, at the front end of traction sheave brake disc is installed, and so not only can reduce the face runout amount of brake disc but also help the installation of drg.Drg is equipped with in both sides, front frame bottom at support, and the braking clamp body of drg connects bearing pins by two and support is fixed, and both sides are with the fixing brake strip of pin in caliper, and its shape is corresponding with the brake disc brake surface.One side friction lining is a fixed type, and opposite side links to each other with the drg suction disc by push rod, and during outage, friction lining presses brake disc under the effect of belleville spring stop car or the braking deceleration operation.

Description of drawings

Fig. 1 is a constructional drawing of the present utility model.

Fig. 2 is brake system structure figure of the present utility model.

Specific embodiment is as Fig. 1, Fig. 2, shown in Figure 3, traction sheave 3 and brake disc 2 become one by force fit and the main shaft 4 that has the rope sheave key, the axis system of band traction sheave and brake disc is supported on the support 6 by bearing 1 and 5, the rotor core 9 that is embedded with permanent magnet forms rotor by rotor sleeve 10 and axis system force fit, stator core 7 glands that coil is housed are in stator case 8, form stator, the stator case of motor and the tail end of the support merga pass bolt that matches links to each other, when stator coil is supplied with three phase mains by frequency converter, form rotating field in the stator and drive the rotor rotation, the synchronizing angle displacement pickup is to be used for measuring motor speed and fixed, the absolute location of rotor field, also can adopt photoelectric encoder to obtain the absolute location of rotor field, frequency converter drives anodontia towing machine true(-)running by setting requirement after obtaining these information.Rotor comes transfer torque by rotor key 11, makes axis system and rotor run-in synchronism.Be processed with grooving on traction sheave, place traction steel-cable in grooving, traction steel-cable drives the upper and lower operation of car.On the front frame of support drg is installed, drg is fixed by bearing pin 13,14 and support, allows again simultaneously to produce relative displacement with support, is beneficial to the declutch adjustment of position of drg.Drg is made up of electromagnet core 19, suction disc 22, braking clamp body 23, push rod 16, belleville spring 21, adjustment swivel nut 18, adjustment cap 17, the handle 15 that declutches.The friction lining 24 of great friction coefficient is housed with pin respectively in the interior both sides of braking clamp body 23, magnet coil 20 and belleville spring are housed in electromagnet core, push rod is housed on suction disc, push rod can directly withstand on the friction lining on the braking clamp body inboard, and friction lining is corresponding with brake disc, when system turns round, electromagnet is in "on" position, suction disc drives push rod and leaves brake strip, breaks away between friction lining and the brake disc, and system can normal operation.When system's dead electricity, the pressure of belleville spring makes suction disc drive push rod compressing friction lining and compresses brake disc, thereby traction sheave is stopped, and car remains on position of stopping (normal operation) or braking deceleration (emergency state).Braking force can be adjusted by the amount of compression of adjusting swivel nut and adjustment cap adjusting belleville spring.The handle that declutches is equipped with in end at push rod, and the handle that declutches adopts cam structure, with this strength that reduces manually to declutch, reaches the purpose that manually easily declutches.Under the emergency state, after manually declutching, utilize the reservation jiggering interface of front end of spindle, use a micro-reducer structure and can realize that manual jiggering reaches the purpose that flat bed pulls in.

Claims (5)

1. support the synchronous anodontia towing machine of rare earth permanent magnet before one kind, it comprises support, motor, drg, traction sheave, brake disc and synchronizing angle displacement pickup or photoelectric encoder, it is characterized in that described sole plate supports point in the traction sheave both sides, brake disc is fixed on the outside of traction sheave.

2. support the synchronous anodontia towing machine of rare earth permanent magnet before according to claim 1, it is characterized in that described motor is a rare earth permanent-magnet synchronization motor, the stator gland is in stator casing, stator casing cooperates with support tail end seam and is screwed, rotor does not have bearing by rotor sleeve and main shaft force fit at the motor tail end.

3. according to claim 1, the 2 described preceding synchronous anodontia towing machines of rare earth permanent magnet that support, the front frame bottom and arranged on left and right sides that it is characterized in that support is equipped with by the braking clamp body of electromagnet, band friction lining and is connected with the drg that the braking suction disc of push rod is formed, suction disc institute bonded assembly push rod acts directly on the friction lining on the braking clamp body, braking clamp body both sides friction lining is corresponding with brake disc, when magnet coil cuts off the power supply, the pressure of the pressured spring that contracts makes friction lining press this brake disc, makes the traction sheave braking.

4. support the synchronous anodontia towing machine of rare earth permanent magnet before according to claim 3, it is characterized in that the pressure adjustmenting mechanism of its drg is positioned at the axis part of electromagnet core, make the braking force adjustment simple, accurately.

5. support the synchronous anodontia towing machine of rare earth permanent magnet before according to claim 1, it is characterized in that leaving the interface that is used for manual jiggering at the leading section of main shaft, in case of emergency, can connect a miniature reducer at front end of spindle and drive the rotation of towing machine main shaft, thereby make car reach the flat bed state.

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