CN86206951U - Intermitent electric driving device - Google Patents

Abstract

The utility model discloses an intermittent electric driving device, which is suitable for driving industrial boiler grates whose evaporative capacity is 1-4 tons/hour. The utility model uses a time controller to control a linear electric motor, and drives a boiler grate shaft through a lever and a ratchet wheel to realize the feeding of the boiler grate. The intermittent electric driving device uses an elastic component to impel the lever to reset, and uses a drive reversing mechanism to control the boiler grate to move positively and reversely. The utility model is a stepless and intermittent speed regulating device, and has the advantages of wide speed regulating range, simple manufacturing technique, low cost and less power consumption.

Description

Intermitent electric driving device

The utility model is a drive unit at a kind of intermittence, be specially adapted to evaporation capacity and be 1 to 4 ton/time Industrial Boiler fire grate driving.

Known fire grate drive unit, a kind of, mainly form by ordinary three-phase synchronous and mechanical reduction machine, this device is because speed ratio is big, the speed governing class is limited, thereby can not adapt to the needs of various situations and the burning of different coal, and the shortcoming that volume is big, weight is big, cost is high, power consumption is many is arranged.Another kind mainly is made up of ordinary three-phase synchronous, time controller and harmonic wave speed reducing machine, its complex structure, manufacturing process strictness, cost height.

Task of the present utility model is to set up a kind of improved fire grate drive unit, can more effectively satisfy instructions for use stepless, intermittent duty, and structure and manufacturing process is simple, cost is low, little power consumption.

Solution of the present utility model is: drive unit mainly is made up of cartridge type linear electric motors, lever, lever reset components, ratchet, ratchet and driving changement.

With time controller control linear electric motors, the push shaft of motor affects lever, drives the fire grate axle and rotates by ratchet, ratchet, realize the fire grate feeding, when lever is advanced to the stroke end, touch travel switch, linear electric motors quit work, and the lever reset components promotes lever and returns the home position subsequently.Behind the automatic intermittently certain hour of time controller, start linear electric motors once more, so move in circles, fire grate just moves off and on.The speed that fire grate moves is realized by the delay time of regulating time controller.

In time controller, be provided with safety element, once when the situation of foreign matter " stuck " fire grate took place, it can be cut off the electricity supply automatically, sends alarm signal.

Changement can be controlled the push-jump forward or backwards ratchet of two ratchets on the lever, realizes fire grate positive direction or reciprocal moving.

That fire grate drive unit of the present utility model has is stepless, intermittently, the function of speed governing, speed-regulating range width, and prior art ratio: structure, manufacturing process are simple, and cost is low, little power consumption.

Accompanying drawing has been described one embodiment of the present of invention.

Fig. 1, electrodynamic type fire grate drive unit front view intermittently.

Fig. 2, cartridge type linear electric motors profile.

The enlarged drawing of garden post helical torsional spring part among Fig. 3, Fig. 1.

Fig. 4, driving changement position view.

The profile of Fig. 5, driving changement.

Fig. 1 has described the interstation electrodynamic type fire grate drive unit of having a rest, it by cartridge type linear electric motors (5), lever (4), two ratchets (3), ratchet (2), garden post helical torsional spring (6), drive changement (8), two travel switches (7) are formed.The two ends of lever (4) flexibly connect two ratchets (3) about being equipped with on the lever (4) with motor push shaft (13) and ratchet (2) respectively.Ratchet (2) is fixedlyed connected with fire grate axle (1).

During linear electric motors work, push shaft (13) promotes lever (4) and moves to left, and rightward pawl is idle, and left side ratchet (3) orders about ratchet (2), fire grate axle (1) rotates, and drives fire grate and moves.After lever (4) is advanced to ultimate range, touch the travel switch (7) in left side, linear electric motors quit work, and torsionspring (6) pushes back the home position with lever (4) simultaneously.Time controller is drive motors push shaft (5) once more behind the certain hour intermittently.So move in circles, fire grate is intermittently, positive direction moves.

Pull driving mechanism spanner (17) in the other direction, can realize that the opposite direction of fire grate moves.Linear electric motors (5) promote lever (4) and move to left, after it touched left side travel switch (7), time controller started linear electric motors (5), and activation lever (4) moves to right-hand, so the just reverse push-jump ratchet of rightward pawl (3) (2), fire grate axle (1), fire grate move in the other direction.Lever (4) touches right side travel switch (7), and time controller is starter motor (5) once more behind the certain hour intermittently, pushes lever (4) to left side, moves so fire grate is in the other direction batch (-type).

The adjusting of fire grate translational speed realizes by means of the time controller of adjusting the intermitten service of control linear electric motors.

In the cartridge type linear electric motors profile shown in Figure 2, dirt-proof boot (10) and dust ring (11) play dustproof effect, and back-up ring (9) and dirt-proof boot (10) play buffering, damping, spacing to push shaft (13).The head and the tail passway of gas channel in the push shaft (14) communicates with two dirt-proof boots (10) respectively.

Winding (12) is an aluminum material.

The spring rate that garden post helical torsional spring (6) shown in Figure 3, one end are inserted on the boiler wall is adjusted in the hole (15), and the other end is connected on the lever (4).

Fig. 4, Figure 5 shows that the driving changement, be used to control fire grate and move forward or backwards.When commutating spanner (17) when swinging to the right side, depress lock pin (16), lock pin has pinned the ratchet (3) of below, and this ratchet just is in idle state.Meanwhile, the lock pin in left side is raised, so the ratchet of its below is in the duty that positive direction promotes ratchet (2), fire grate axle (1).As a same reason, when spanner was swung to the left side, the ratchet in left side was lockable, and the ratchet on right side then is in the duty that promotes ratchet (2), fire grate axle (1) in the other direction.

Claims (4)

1, a kind of evaporation capacity is the drive unit of 1-4 ton/time Industrial Boiler fire grate, has time controller, it is characterized in that: have cartridge type linear electric motors (5), its push shaft (13) flexibly connects with lever (4), lever (4) other end and ratchet (2) flexibly connect, and ratchet (3) is housed on the lever (4), and ratchet (2) is fixedlyed connected with fire grate axle (1), the reset components that lever (4) are arranged has commutation driving mechanism (8).

2, drive unit according to claim 1 is characterized in that air vent channel (14) is arranged in the push shaft (13), and dirt-proof boot (10), dust ring (11) and back-up ring (9) are equipped with in the head and the tail two ends of push shaft (13).

3, drive unit according to claim 1 and 2 is characterized in that the winding (12) of cartridge type linear electric motors is used aluminum material.

4, drive unit according to claim 1 is characterized in that reset components is a garden post helical torsional spring (6).

Images