CN2295831Y

CN2295831Y - Operator for rolling shutter

Info

Publication number: CN2295831Y
Application number: CN97223966U
Authority: CN
Inventors: 梁伟宗
Original assignee: LIJI MACHINERY (WUHU) CO Ltd
Current assignee: LIJI MACHINERY (WUHU) CO Ltd
Priority date: 1997-06-20
Filing date: 1997-06-20
Publication date: 1998-10-28
Anticipated expiration: 2007-06-20

Abstract

The utility model discloses an operator for controlling the elevating and the falling of a rolling shutter. Both ends of the motor of the utility model are respectively provided with a gear box and an electromagnetic brake; the power output shaft of the gear box drives the gear system in a retainer to transmit. The gears can drive a pressing rod to press a microswitch on the retainer, and the motor loses the electricity. Therefore, the utility model solves the defect that the rolling shutter can not stop elevating and falling automatically in a set position in the past. The operator has the advantages of simple structure, flexible action and high precision of resetting; in addition, the utility model also has the characteristics of small size and convenient installation.

Description

The rolling-gate executor

The utility model relates to a kind of device of handling the rolling-gate lifting.

At present, the mechanism that handles the rolling-gate lifting with motor only is by directly driving the rotating shaft of rolling-gate after the simple speed change.This mechanism generally all is to carry out according to common theory of mechanics when design, and considers seldom that for the installation environment and the lifting characteristic of rolling-gate therefore design is bulky, and inconvenience is installed.Especially now the development of technology has proposed requirements at the higher level to the ease of use of rolling-gate, for example requires the centralized Control that can carry out lifting to rolling-gate in public places such as airport, shops, and rolling-gate can automatic lifting under emergency.These just require rolling-gate should have lifting upper and lower spacing position and can be in upper and lower spacing position accurately automatically the location stop the device of lifting, and that rolling-gate does not so far still have is a kind of simple and reliable for structure, the device of upper and lower limit accurate positioning.

The purpose of this utility model is to provide a kind of handiness, compact conformation, the rolling-gate executor that can locate and stop to move in upper and lower spacing position automatically and accurately during lifting.

The utility model is to utilize motor, gear-box, and mechanism that electromagnetic brake, electric apparatus control apparatus are formed realizes its purpose.This mechanism forms like this: machine shaft is all stretched out at the motor two ends, wherein the rotating shaft of an end connects the brake disc of electromagnetic brake, the rotating shaft of the other end is the power input shaft of gear-box, and the power output shaft of gear-box has transition gear outside gear-box, the external gear engagement of transition gear and stop.

Above-mentioned stop has the gear train of the switched in opposite of two groups of symmetries, in every group of gear train, by driven gear and flank engagement of twin one-level adjusting gear, flank engagement of another flank of tooth of one-level adjusting gear and twin idler gear, another has only the flank of tooth and flank engagement of twin secondary adjusting gear of a teeth groove idler gear, another flank of tooth of secondary adjusting gear and working gear engagement, also be provided with a cam surface on the working gear, compressing bar one end that is lever construction contacts with cam surface, the other end contacts with microswitch contact on the stop, stop external gear axle is provided with two travelling gears, and travelling gear meshes with two groups of driven gears respectively.

Gear-box is the secondary gear speed governing.

More than various mechanisms all be installed in the housing of executor, electric apparatus control apparatus is still arranged in housing, its major function is to make the motor forward and backward or stop operating, the electromagnetic brake ironworker is done, simultaneously it also is connected with microswitch on the stop, when the microswitch contact was depressed, electric apparatus control apparatus can make the motor dead electricity shut down.Each parts of complete machine all are axially to assemble along motor shaft, reduce the radial space volume as best one can.In addition for shortening axial length, adopt the secondary gear speed governing in the gear-box,, should adopt the above gear speed governing of level Four according to common optimal design, but the utility model wants cube little, so adopt the secondary speed governing, total hardening is to satisfy requirement of strength on material for governor gear, and structurally governor gear adopts helical angle above 10 °, modulus was less than 1: 5 helical gear, the two-stage gear ratio surpasses 20, on one side gear shaft is positioned on the gear housing, another side is positioned on the electric motor end cap.Adopt big speed ratio, the large helix angle governor gear had both slowed down soon, did not influence intensity and life-span again, and the two-stage governor gear is because the phase despining can be cancelled each other axial force.So this spline structure has not only guaranteed intensity but also make the driving member volume very little, leaves the space mounting stop.Stop is pressed following principle work: the external gear of stop meshes with the transition gear on the power gear box output shaft, pass to the speed ratio in accordance with regulations of the rotating speed on the gearbox output shaft on two driven gears of symmetry in the stop by travelling gear, be delivered on the idler gear by the one-level adjusting gear respectively again, after the secondary adjusting gear pass on the working gear, when the cam position jack-up compressing bar on the working gear, the other end of compressing bar will be oppressed the contact of position limited inching switch, plays the spacing effect of motor outage.

Height between the maximum lifting of rolling-gate that stop limits is decided by the speed ratio of rotating speed between the rotating speed of gear-box power output shaft and working gear, the highest lifting position and the minimum down position that are rolling-gate after speed ratio is determined are determined, can adjust upper and lower spacing position flexibly in order to make in the highest and extreme lower position scope, can adopt such mechanism: promptly one-level adjusting gear in the stop and secondary adjusting gear are on same axis, and axle is fixed on one and can makes on the clutch that meshing gear throws off.Like this after the I and II adjusting gear separates with the institute meshed gears respectively, can make the I and II adjusting gear with two groups of driven pulleys, idler gear, working gear intermeshes again by clutch at an arbitrary position, therefore two groups of working gears can only be worked in the scope of the number of teeth of determining arbitrarily, but play rolling-gate arbitrary height position-limiting action all in the maximal regulated scope.

Why idler gear is provided with the flank of tooth that has only a teeth groove, is because guarantee to have under the situation of the number of teeth seldom at adjusting gear, can increase speed reducing ratio equally, makes the volume of stop reduce significantly.

Electromagnet gets electric adhesive brake disc during the electromagnetic brake energising, and brake disc armature is thrown off, and motor shaft can unrestrictedly rotate.Electromagnet dead electricity spring reset during outage, armature presses the brake disc skidding.For can the hand-operated lifting rolling-gate when having a power failure, electromagnetic brake armature be the disk that can rotate around the axis, and twines chain on the disk curved surface, and disk can be along the rotating shaft axially-movable.This is actually armature is used as fixed pulley, the pulling chain can make the rolling-gate lifting, because armature can axially-movable, therefore can make the outer vertically motion of armature by handle or other interlinked mechanism, brake disc and armature are thrown off, rolling-gate can fall with deadweight, because speed can be more and more faster during the rolling-gate free-falling, for making it become at the uniform velocity, limiter of speed is equipped with in the electromagnetic brake brake disc outside, limiter of speed is by connecting to form by spring in the middle of two identical annulus, and every annulus is fixed on the brake disc by rotating shaft, and two rotating shaft centers are symmetrical in the center of circle.When rolling-gate descends soon more, the limiter of speed rotating speed is high more, and centrifugal force is bigger, and annulus outwards opens, therefore and the frictional force between the housing big more, decrease speed can reduce, and reaches the speed limit effect.

The utility model relatively has following good effect with prior art:

(1) owing to be provided with position limiter device, thereby rolling-gate is stopped automatically in the highest or extreme lower position of setting, and adopt two compound gear kinds of drive of transferring in the stop, therefore spacing sensitivity, resetting is accurate.So for each rolling-gate of centralized Control in public places or on rolling-gate, load onto various probes and control lifting automatically and created condition.(2) the utility model not only can use having under the electric situation, also can lifting when having a power failure, this wherein with the electromagnetic brake upper armature as fixed pulley, not only can make things convenient for the lifting of manual operation rolling-gate, and structure also simplified, and also reduced whole executor volume simultaneously.(3) though the utility model has increased component such as stop, but because gear-box adopts two stage speed change, so shortened the axial length of executor effectively, all make every effort to make the executor volume very little to the design of parts such as multiple gear, motor shaft, gear-box on the stop in addition, therefore can satisfy installation requirement.

By the following examples and in conjunction with its accompanying drawing the utility model is described further.

Fig. 1 is that an embodiment assembles schematic diagram.

Fig. 2 is the electromagnetic brake structural representation.

Fig. 3 is the limiter of speed structural representation that is assemblied on the electromagnetic brake.

Fig. 4 is the stop structural representation.

Fig. 5 is that Fig. 4 A is to partial enlarged drawing.

Fig. 6 is a stop gear drive schematic diagram.

Fig. 1 middle gear case 1, stop 2, motor 3, electromagnetic brake 4, electric apparatus control apparatus 5 all are assemblied in the same housing 12.Machine shaft 6 stretches out the two ends of motor 3, and an end of rotating shaft 6 is connected with the brake disc of electromagnetic brake 4, and the other end stretches in the gear-box 1, as the power input shaft of gear-box 1 internal speed-changing gear.Gear-box 1 adopts the secondary gear speed governing, gear helical angle is greater than 10 ° helical gear, gearratio is less than 1.5 greater than 20 ° of moduluses, all gear quenchings are handled with guaranteed strength, gear shaft one end is positioned at the end cap of gear-box 1, the other end is positioned in the bearing of motor 1 end cap, the power output shaft 9 of gear-box 1 directly stretches out outside the housing 12, drive rolling-gate rotating shaft or rotating shaft 10 rotations that cog and reach the effect that makes rolling-gate obtain lifting, power output wheel 9 also has transition gear 8 in housing 12, and make external gear 11 rotations on the stop 2 that is engaged with by transition gear 8, drive each gear rotary work in the stop 2.Be installed in electric apparatus control apparatus 5 in housing 12 afterbodys by lead and motor 3, two microswitches on the stop 2, electromagnetic brake 4 connects, and when having a power failure, by pulling chain 7 and the pine bar 18 of stopping, makes rolling-gate continue to be able to lifting.

The structure of electromagnetic brake 4 as shown in Figure 2, its effect mainly is that the restriction motor shaft rotates and to make rolling-gate stop lifting immediately.What present embodiment adopted is common electromagnetism electricity loss brake structure, i.e. adhesive armature 15 during electromagnet 16 energisings separates armature 15 and brake disc 14, and owing to brake disc 14 links to each other with motor shaft 6, so motor shaft 6 can unrestrictedly rotate.Otherwise then motor shaft is restricted and plays braking action.Still can work under power down mode in order to make executor, also adopt following two mechanisms in the brake 4: one armature is a disk that can rotate around axle 17, fluted on the disk circumference, chain 7 promptly is wrapped in the groove, armature 15 is equivalent to a fixed pulley, pulling chain 7 can make motor shaft 6 rotate, and rolling-gate can lifting.They are two years old, armature 15 can outwards move by external force together with axle 17, the pine that axle 17 afterbodys are connected with the lever construction bar 18 of stopping, the pulling pine bar 18 of stopping, armature 15 moves backward with brake disc 14 and separates, machine shaft 6 without limits, rolling-gate with the deadweight can fall, speed can be more and more faster when rolling-gate fell, so also be fixed with limiter of speed 13 on the brake disc 14.

Fig. 3 is the limiter of speed structural representation.Connected by spring 21 between two semicircular ring 19, have rotating shaft 20 to be fixed on the brake disc 14 on the semicircular ring 19, rotating shaft 20 is symmetrical in the center of circle on two semicircular ring.

Among Fig. 4, the 32nd, the base plate of stop, the 33rd, the compressing bar, the one end is on the contact 31 of microswitch 34, and the other end is on the cam 30 of working gear.Cam 30 motion can make compressing bar 33 around the axle action, oppresses or loosen the contact of microswitch 34, thereby motor 3 is rotated or stops.The I and II adjusting gear is on same axis 26, and axle 26 is fixed on the clutch 36, pulls the spanner 35 on the clutch, I and II adjusting gear and other are out of gear or mesh.

Fig. 5 has reflected that the stop between two microswitches 34 has a recess, and this can make the power output shaft 9 of gear-box 1 pass from wherein inserting, and makes transition gear 8 and 11 engagements of stop external gear.

There are two groups of gears to constitute two duplexes of transferring among Fig. 6,1.1 of external gears go up also have two travelling gears 28 respectively with two groups of gears in driven gear 29 engagements, therefore external gear 11 turns to difference with power output shaft 9 and during rotating, have only one group to follow rotation in two groups of gears, so two groups of gears are controlled the highest spacing or minimum spacing respectively.Driven gear 29 among the figure, twin idler gear 23, the working gear 25 that has cam surface 30 is on same axis, twin one-level adjusting gear 22 and twin secondary adjusting gear 24 are also on same axle, gear 22 respectively with a flank engagement of gear 29 and gear 23, another flank of tooth of gear 23 has only a teeth groove, it and 24 1 flank engagement of gear, another flank of tooth of gear 24 and working gear 26 engagements, when

gear

22,24 by clutch 36 and

gear

29,23, during 25 disengagings, can make above-mentioned three gears be in relative position arbitrarily, so just can in the spacing position of the height of maximum, regulate the spacing position of height arbitrarily.

Claims

1, rolling-gate executor, by motor (3), gear-box (1), electromagnetic brake (4), electric apparatus control apparatus (5) is formed, and it is characterized in that:

1. machine shaft (6) is all stretched out at motor (3) two ends, wherein the rotating shaft of an end connects the brake disc (14) of electromagnetic brake (4), the rotating shaft of the other end is the power input shaft of gear-box (1), gear-box power output shaft (9) has transition gear (8) outside gear-box, external gear (11) engagement of transition gear (8) and stop (2);

2. stop (2) has the gear train of the switched in opposite of two groups of symmetries, in every group of gear train, a flank engagement by driven gear (29) and twin one-level adjusting gear (22), (23) flank engagement of another flank of tooth of one-level adjusting gear (22) and twin idler gear, another has only a flank engagement of the flank of tooth and the twin secondary adjusting gear (24) of a teeth groove idler gear (23), another flank of tooth of secondary adjusting gear (24) and working gear (25) engagement, working gear (25) is provided with a cam surface (30), compressing bar (33) one ends that are lever construction contact with cam surface (30), the other end contacts with microswitch (34) contact on the stop, stop external gear (11) axle is provided with two travelling gears (28), and travelling gear (28) meshes with two groups of driven gears (29) respectively;

3. gear-box (1) is the secondary gear speed governing.

2, rolling-gate executor according to claim 1 is characterized in that:

One-level adjusting gear (22) in the stop (2) and secondary adjusting gear (24) are on same axis (26), and axle (26) is fixed on one and can makes on the clutch that meshing gear throws off.

3, rolling-gate executor according to claim 1 is characterized in that:

Electromagnetic brake (4) armature (15) is to twine chain (7) on the disk curved surface around the disk of axle (17) rotation, and disk can be along rotating shaft (1.7) axially-movable.

4, rolling-gate executor according to claim 1 is characterized in that:

Limiter of speed (13) is equipped with in electromagnetic brake brake disc (14) outside, limiter of speed (13) connects to form by spring (21) by in the middle of two identical annulus (19), every annulus (19) is fixed on the brake disc (14) by rotating shaft (20), and two rotating shafts (20) center is symmetrical in the center of circle.

5, rolling-gate executor according to claim 1 is characterized in that:

Gear in the gear-box (1) adopts helical angle to surpass 10 °, and modulus is less than 1.5 helical gear, and the two-stage gear ratio surpasses 20, on one side gear shaft is positioned on the gear housing, another side is positioned on motor (3) end cap.