CN201044196Y

CN201044196Y - Double-shaft supported double-pull electromagnet

Info

Publication number: CN201044196Y
Application number: CNU2007201004429U
Authority: CN
Inventors: 韩伍林; 王建伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2008-04-02
Anticipated expiration: 2017-01-26

Abstract

The utility model relates to a push-push electromagnet which is supported by double shafts and is used in a brake of traction hub type of lift, the structure of which is that the middle of a shell of the electromagnet is provided with a connector, the shell is provided inside with an electromagnetic coil and an armature; the port of the shell is connected with an end closure; the outer mandrel of the armature is supported inside the hole of the end closure; the connector is inserted with a brake releasing pole with the inner end a flat end; the outer end of the brake releasing pole is connected with a handle; the armature is provided with an inner mandrel supported in the hole of the connector; two faces of the connector are respectively provided with a communication pore communicating the cavity of the shell and the jack of the brake releasing pole; the communication pore is provided inside with a gliding block toggled from the inner end of the brake releasing pole. The utility model solves the problem of easy wear and fluff and clamping stagnation of the armature due to that a push-push electromagnet takes the core body of the armature as the binding face, thereby improving running safety and reliability of a lift.

Description

The dual-push electromagnetic iron that twin shaft supports

Technical field

But the utility model relates to the electromagnet that a kind of armature straight line moves, the dual-push electromagnetic iron that specifically a kind of moving iron core that uses in the elevator traction machine hub type brake adopts twin shaft to support.

Background technology

The dual-push electromagnetic iron that in the elevator traction machine hub type brake, uses, its structure is that the housing middle part is connected to connector, solenoid and moving iron core are housed in the housing, the housing port is connected to end cap, the outer mandrel of moving iron core is supported in the core hole of end cap, be plugged with the inner cylindrical bar that declutches of flat end that is on connector, the outer end of the bar that declutches connects handle.Carrying out elevator maintenance or brake can not open the time, rotating the handle that declutches the bar that declutches is rotated, relying on rib on the bar flat end axial plane that declutches, two moving iron cores are moved laterally, realizing manually declutching of brake along promotion to moving iron core inner face.Because the inner face of moving iron core need allow the bar that declutches push, and the bar that declutches can not be done too slightly, so, just inner spindle can not be set at the inner face of moving iron core.Therefore, the moving iron core in the existing dual-push electromagnetic iron all is to connect to form by the core body of moving iron core with at the outer mandrel of core body outboard end.Moving core structure so just makes the core body of moving iron core and mandrel all become the support component of moving iron core and contacts with the supporting surface of housing and end cap.The supporting surface of moving iron core will wear and tear in moving iron core motion process, makes the rubbing surface fluffing, finally causes moving core clamping stagnation.If the moving core clamping stagnation of dual-push electromagnetic iron occurs in after the Xie Zha of elevator brake just, the braking action of brake will be lost efficacy thereupon so, and for the man lift, its consequence is exactly directly to cause ladder to ruin the malignant event generation that the people dies.Therefore,, must carry out regular disassembling to elevator brake, with periodic maintenance, the maintenance and lubricated of carrying out specialty by the professional for ensureing the security of operation of elevator.So along with the surge of elevator usage quantity, the maintenance workload of elevator is increasing.Therefore, the wear-resisting and lubrication problem of the moving iron core of dual-push electromagnetic iron has become a big difficult point and the focus in the elevator brake manufacturing field.

The utility model content

It is the dual-push electromagnetic iron that is supported by twin shaft that the purpose of this utility model just provides a kind of moving iron core, to solve the moving core clamping stagnation problem that the moving iron core of single shaft in use exists, improves the security reliability of elevator operation.

The utility model is achieved in that at the housing middle part of electromagnet and is connected to connector, solenoid and moving iron core are housed in the housing, the housing port is connected to end cap, the outer mandrel of moving iron core is supported in the core hole of end cap, be plugged with the inner bar that declutches of flat end that is on connector, the outer end of the bar that declutches connects handle, institute's improvements, the one, set up inner spindle at the inner face of moving iron core, leave the axis hole that supports moving iron core inner spindle in two side end faces of connector; The 2nd, on two side end faces of connector, have an end and be communicated with the intercommunicating pore that housing cavity, an end are communicated with the bar jack that declutches, the shifting block that can be stirred by the bar the inner of declutching is housed in intercommunicating pore.

Design key of the present utility model be exactly with electromagnet original by the inner rib of the bar that declutches along the structure that manually declutches and the mode of operation of directly stirring moving iron core inner face, changing becomes by stirring the shifting block that is arranged in the connector, promoting moving iron core by shifting block again and reach the structure that manually declutches and the mode of operation of stirring moving iron core indirectly.Its biggest advantage be exactly with shifting block as declutching the media of stirring between bar and the moving iron core, so just can strengthen the distance that declutches between bar and the moving iron core, the distances that increasing two is moved between the iron core inner faces, thereby widen the thickness of the connector in the middle part of the housing.Because the spacing of two moving iron cores strengthens, the thickness of connector increases, thereby just can set up inner spindle on the inner face of moving iron core, correspondingly, leaves the axis hole that supports moving iron core inner spindle in the side end face of connector.Like this, the outer mandrel of moving iron core also remains the push rod of electromagnet power output in as back shaft; The inner spindle of moving iron core then is merely as a back shaft, in order to support the core body of moving iron core.Promptly can be made into the novel dual-push electromagnetic iron that a kind of moving iron core adopts twin shaft to support thus.Because the moving iron core in this dual-push electromagnetic iron has been realized the new structure that supported by inside and outside mandrel,, the core body of moving iron core do not contact with the housing surface of internal cavity so just can being suspended in the housing inner chamber.Like this, when work of electromagnet, the core body of moving iron core just can not rubbed, thereby has just stopped the possibility that moving iron core core body produces the wearing and tearing fluffing yet.

The utility model is by leaving intercommunicating pore, installing shifting block additional in connector, solve dual-push electromagnetic iron dexterously and disposed the existing technical barrier that can not manually declutch of generous connector, therefore and solved original dual-push electromagnetic iron effectively and be prone to the chain problem that will cause used brake brake fade behind clamping stagnation, the clamping stagnation with the core surface of moving iron core after as the existing fluffing easy to wear of supporting surface, fluffing, guarantee the functional reliability of elevator traction machine hub type brake thus, significantly improved the fail safe and the reliability of elevator operation.

Description of drawings

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

Fig. 2 is the fundamental diagram that manually declutches of the present utility model.

Fig. 3 is the structural representation of a kind of wear-resisting moving iron core in the utility model.

Embodiment

As shown in Figure 1, the utility model is respectively to be connected a housing 4 cylindraceous on the two sides of the connector 5 that plays connection and separated magnetic effect, is sealed with end cap 1 on the external port of housing.Solenoid 2 and moving iron core 3 are housed respectively in the inner chamber of two housings 1.Have the bar jack that declutches at connector 5 middle parts, be plugged with the inner in the hole and be the cylindrical bar 6 that declutches of flat end, the outer end of the bar 6 that declutches connects handle.Mandrel 3a outside the outer face of moving iron core 3 is provided with, outer mandrel 3a is supported in the core hole of housing end plug 1, is provided with inner spindle 3b at the inner face that moves iron core, and inner spindle is supported in the core hole of leaving on the connector side end face.On two side end faces of connector 5, have the intercommunicating pore that is communicated with the housing cavity and the bar jack that declutches, place shifting block 7 in the intercommunicating pore.

The utility model can be left an intercommunicating pore on each side end face of connector 5, place shifting block 7 in the intercommunicating pore; Also can on connector 5 each side end face, open two parallel intercommunicating pores, promptly in each side end face of connector, be provided with two parallel shifting blocks 7 (Fig. 2).

As shown in Figure 2, the shifting block of placing in the connector intercommunicating pore 7 is positioned at the both sides of bar 6 flat ends that declutch.Turning handle rotates the bar 6 that declutches, two ribs up and down of flat end are symmetrically arranged two shifting blocks 7 along can oppositely stirring with the bar center of circle of declutching simultaneously in it, these two shifting blocks 7 are outwards moved along the moving iron core 3 that intercommunicating pore outwards promotes connector 5 both sides, realize manually declutching of dual-push electromagnetic iron thus.

The utility model has solved the core body friction problem of moving iron core well, but in order to prevent magnet short-cut path, the mandrel of moving iron core generally is with non-magnetic metal material such as making such as stainless steel or metallic copper.Because these metal materials can not be done the Quenching Treatment of sclerosis, therefore also can influence the overall wear resistance energy of moving iron core.For this reason, the utility model is provided with a ceramic spraying layer 8 (shown in Figure 3) on the inside and outside mandrel of moving iron core 3.Use the method for thermal spraying exactly, under the state of high temperature melt, high velocity jet makes it to form the sprayed coating of an engineering ceramics to the surface at the friction support position of the moving inside and outside mandrel of iron core with engineering ceramic material.

Because the thickness of ceramic spraying layer is extremely thin, magnetic property influence to electromagnet is little, and utilize the self-characteristic of engineering ceramics, but can improve the anti-wear performance of the moving inside and outside mandrel of iron core significantly, so just can solve the wear problem of the moving inside and outside mandrel supporting surface of iron core effectively, the overall wear resistance of iron core can significantly be improved.

The thickness of ceramic spraying layer 8 is advisable with 0.1-0.3mm.Because the result learns through experiment test, when the ceramic spraying layer thickness was 0.1mm, electromagnetic actuation power reduced 1.5-2%; When thickness was 0.2mm, electromagnetic actuation power reduced 3--4%; When thickness is 0.3mm, the influence of electromagnetic actuation power is no more than 6%.But behind ceramic coated layer, the gap between moving iron core and the corresponding member supporting face can narrow down to 0.15mm, and like this, the actual gap of the two is exactly 0.15mm.Influence is not more than 3% through actual measurement and this gap is to the suction-combining force of electromagnet.Therefore, the thickness of ceramic spraying layer is chosen between the 0.1-0.3mm, is the actual use needs that can satisfy electromagnet.

Therefore the utility model also can solve the back shaft wear problem and the moving core clamping stagnation problem of moving iron core by on the inside and outside mandrel of moving iron core bearing being installed owing to realized the twin shaft support of moving iron core.

Claims

1. the dual-push electromagnetic iron of a double bracing axle, housing (4) middle part is connected to connector (5), solenoid (2) and moving iron core (3) are housed in the housing, the housing port is connected to end cap (1), the outer mandrel (3a) of moving iron core is supported in the core hole of end cap (1), on connector (5), be plugged with the inner bar that declutches (6) of flat end that is, the declutch outer end of bar connects handle, it is characterized in that setting up inner spindle (3b), leave the axis hole that supports moving iron core inner spindle in two side end faces of connector (5) at the inner face of moving iron core (3); On two side end faces of connector (5), have an end and be communicated with the intercommunicating pore that housing cavity, an end are communicated with the bar jack that declutches, the shifting block (7) that can be stirred by the bar the inner of declutching is housed in intercommunicating pore.

2. the dual-push electromagnetic iron of double bracing axle according to claim 1 is characterized in that having an intercommunicating pore on each side end face of connector (5).

3. the dual-push electromagnetic iron of double bracing axle according to claim 1 is characterized in that having two parallel intercommunicating pores on each side end face of connector (5).

4. according to the dual-push electromagnetic iron of claim 1,2 or 3 described double bracing axles, it is characterized in that on the inside and outside mandrel of moving iron core, being provided with ceramic spraying layer (8).

5. the dual-push electromagnetic iron of double bracing axle according to claim 4, the thickness that it is characterized in that ceramic spraying layer (8) is 0.1-0.3mm.