CN202529686U - Double-pushing electromagnet for elevator traction machine - Google Patents
Double-pushing electromagnet for elevator traction machine Download PDFInfo
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- CN202529686U CN202529686U CN2012201806276U CN201220180627U CN202529686U CN 202529686 U CN202529686 U CN 202529686U CN 2012201806276 U CN2012201806276 U CN 2012201806276U CN 201220180627 U CN201220180627 U CN 201220180627U CN 202529686 U CN202529686 U CN 202529686U
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- plunger
- cylindrical stator
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Abstract
The utility model discloses a double-pushing electromagnet for an elevator traction machine. The double-pushing electromagnet comprises a cylindrical stator (1), two magnetic plungers (2) and two non-magnetic ejector robs (3), wherein both ends of the cylindrical stator (1) are fixedly provided with end covers (4); the end covers (4) are provided with bearings (5); the ejector robs (3) are arranged on one end cover (4) respectively through the bearings (5); the plungers (2) are accommodated in one plunger cavity (1.1) of the cylindrical stator (1) respectively; the inner end of each plunger (2) is provided with a pit; rigid shaft sleeves (6) are fixedly arranged in the pits; both end faces of a radial partition plate (1.2) are provided with non-magnetic convex columns (1.3.1) in a convex manner; and all the plungers (2) are nested in the convex columns (1.3.1) through the shaft sleeves (6). The double-pushing electromagnet for the elevator traction machine can prevent the outer circumferential surfaces of the plungers from abrading the inner circumferential surface of a magnetic cylinder body, cannot block magnetic circuits and is easy to manufacture.
Description
Technical field
The utility model relates to the elevator machine field, specifically is the dual-push electromagnetic iron of the brake system on a kind of elevator traction machine.
Background technology
Elevator traction machine comprises frame and is installed in rotating traction sheave on the frame; The traction sheave both sides are provided with symmetrical two brake control levers; The lower end of each brake control lever is hinged on the frame of traction sheave below; Be fixed with a dual-push electromagnetic iron on the frame of traction sheave top, the two ends of dual-push electromagnetic iron are provided with two push rods, and the outer end of a push rod of the upper end of each brake control lever and dual-push electromagnetic iron is fixed; The inboard, stage casing of each brake control lever is fixed with a brake shoe, also is provided with a retarding spring that makes that brake shoe on the brake control lever and traction sheave are held tightly on each brake control lever.Above-mentioned brake control lever, retarding spring and electromagnet have constituted the brake system of this towing machine.
The principle of work of the brake system of the towing machine of prior art is: electromagnet is under cold prerequisite, and brake shoe inboard on each brake control lever is held tightly with traction sheave under the effect of retarding spring, realizes the braking of traction sheave with this; In case electromagnet energising; Two push rods at electromagnet two ends outwards move under the electromagnetic force effect; Drive the upper end of the brake control lever of fixing with the push rod outer end, the effect that makes brake control lever overcome retarding spring moves outward, finally causes being fixed on brake control lever inboard brake shoe and traction sheave and unclamps.
The dual-push electromagnetic iron of the towing machine of prior art comprises the plunger of shell, magnetic conduction cylindrical shell, end cap, two magnetic conductions and the push rod of two insulated; Be provided with the radially dividing plate of dividing the magnetic conduction cylindrical shell equally in the magnetic conduction cylindrical shell, a coil is respectively established at magnetic conduction cylindrical shell two ends, and two coils and magnetic conduction cylindrical shell all are fixed on the inner peripheral surface of shell; Above-mentioned shell, magnetic conduction cylindrical shell and two coils constitute the cylindrical stator of dual-push electromagnetic iron; Radially dividing plate is divided equally into two plunger cavities with the inner chamber of cylindrical stator, and each plunger outer end and a push rod are inner fixing, and each plunger sliding fit is in a plunger cavity of cylindrical stator; The cylindrical stator two ends are fixed with two end caps; The distance of each end cap inner end surface and dividing plate radially is greater than the axial length of plunger, and each end cap is fixed with a bearing, each push rod through this bearing installation on end cap.
The cylindrical stator of dual-push electromagnetic iron is provided with a through hole, rotatablely in the through hole is combined with the bar that declutches, and the inner of the bar that declutches is the flat plate that declutches, and its thickness equals the thickness of the radially dividing plate of cylindrical stator.Under the normal condition, the flat plate that declutches is vertical state.When elevator unexpected power failure in service, electromagnet also cuts off the power supply, and receives in two push rods of dual-push electromagnetic iron, and two plungers are resisted against the declutch both sides of plate of flat; Whole towing machine band-type brake at this moment, often need declutch towing machine under cold prerequisite, leans on artificial with the elevator pull-up then; In this case, rotate the bar that declutches, the plate that declutches that drives flat rotates, and the feasible plate that declutches is not vertical state; At this time, declutch plate will with its against two plungers push away toward both sides, to reach the purpose that declutches.
The principle of work of the dual-push electromagnetic iron of the towing machine of prior art is: when this dual-push electromagnetic iron energising; Coil produces magnetic field and under the effect in magnetic field; Make the plunger of two sliding fits in two plunger cavities of cylindrical stator respectively to two side slips, drive with the fixing push rod of plunger and pass to both sides; After the outage, electromagnetic force disappears, the slippage to the inside under the effect of retarding spring again of push rod and plunger.
Can know that through foregoing description plunger reaches with the fixing installation of push rod on cylindrical stator of plunger and mainly leans on two places, a place is that the outer circumference surface of plunger contacts with the inner peripheral surface of magnetic conduction cylindrical shell; Another place be push rod pass through bearing installation with the cylindrical stator fixed end caps on, like this, just have following defective: the inner peripheral surface direct contact of the outer circumference surface of plunger and magnetic conduction cylindrical shell; Like this, both long-term slippages relatively, and plunger and magnetic conduction cylindrical shell all are to be processed by the soft permeability magnetic material of matter; Long-term slippage meeting causes both contact surface abrasion; No longer smooth, friction drag increases, like this; The plunger of this electromagnet and push rod be the fast speed slippage smoothly, makes the band-type brake of whole brake system, the process that declutches lose efficacy; For fear of above-mentioned defective, have the people on the inner peripheral surface of plunger outer circumference surface and magnetic conduction cylindrical shell, to be provided with the interlayer of hard brass material, but brass magnetic conduction has not stopped magnetic circuit, has completely cut off magnetic field, has reduced electromagnetic force, has sacrificed the performance of whole dual-push electromagnetic iron; Also there is producer on the inner peripheral surface of plunger outer circumference surface and magnetic conduction cylindrical shell, to spray ceramic barrier layer, like this, though wear-resistant and little to the obstruction of magnetic circuit, spray the ceramic barrier layer of even equal thickness at two peripheries, its processing and manufacturing difficulty is very big.
The plunger sliding fit is in a plunger cavity of cylindrical stator, and the plunger both sides all have air to exist, and the plunger of permeability magnetic material and magnetic conduction cylindrical shell are all corroded by malaria easily; For avoiding corrosion, with the bore seal of cylindrical stator, but during plunger motion; Can make plunger one side air be compressed air pressure increases; The opposite side volume enlarges air pressure and reduces, and the gas of both sides all can produce resistance to the slippage of plunger like this, makes that the plunger operation is not smooth.In order to address this problem, people mill out air channel one at the outer circumference surface of plunger, but this can cause new problem again; As shown in Figure 1; When sudden power need be rotated the bar 101 that declutches when declutching, because the inner notch of the air channel 103 of plunger 102 is positioned at the inward flange of plunger 102 outer circumference surfaces, the bar 101 inner flats that the declutch plate 104 that declutches possibly can't rotate by stuck inner notch positions at air channel 103; Like this, can make declutch bar 101 declutch the effect malfunctioning.
Summary of the invention
The technical matters that the utility model will solve is, provides a kind of inner peripheral surface wearing and tearing that can avoid plunger excircle and magnetic conduction cylindrical shell can not stop magnetic circuit again and makes the dual-push electromagnetic iron of simple elevator traction machine.
The technical solution of the utility model is, a kind of dual-push electromagnetic iron of elevator traction machine is provided, and it comprises plunger and two non-magnetic push rods of cylindrical stator, two magnetic conductions; The inner of the outer end of each plunger and a push rod is fixed; Be provided with the radially dividing plate that its inner chamber is divided into two plunger cavities in the cylindrical stator, the two ends of cylindrical stator are fixed with end cap, and end cap is provided with bearing; Each push rod passes through bearing installation on an end cap; Each plunger is contained in the plunger cavity of cylindrical stator, and the inner of each plunger is provided with pit, and the pit internal fixation has the axle sleeve of hard; Radially two of dividing plate equal evaginations of end face have non-magnetic projection; And the axis of each projection and the dead in line of cylindrical stator, each plunger is linked on the projection through axle sleeve, has the slit between the outer circumference surface of each plunger and the inner peripheral surface of cylindrical stator.
After adopting above structure; The dual-push electromagnetic iron of the utility model elevator traction machine compared with prior art has the following advantages: because plunger is to be linked on the projection through the hard axle sleeve, and there is the slit in the inner peripheral surface of the outer circumference surface of plunger and cylindrical stator; The outer circumference surface that is plunger no longer contacts with the inner peripheral surface of cylindrical stator; Like this, during slippage, the outer circumference surface of discontiguous plunger and the inner peripheral surface of cylindrical stator can not produce wearing and tearing to plunger in the plunger cavity of cylindrical stator; Avoided because the contact surface that wearing and tearing cause is rough; Stop because plunger and cylindrical stator friction drag that wearing and tearing produce are big, and plunger is the situation of slippage smoothly, make whole brake system band-type brake, the process operation that declutches reliable and stable; And plunger is to fix through bearing that cooperates with push rod and projection two places, and the dead in line of the axis of each projection and cylindrical stator; Be the axis place that projection is positioned at cylindrical stator, the magnetic induction line that this place's stator coil produces is minimum, does not almost have magnetic induction line to pass this position; So should adopt the non-magnetic projection of hard in the place, can not stop magnetic circuit, can not completely cut off magnetic field; Just can not reduce electromagnetic force yet, ensure the performance of whole dual-push electromagnetic iron; Moreover this dual-push electromagnetic iron not be used in the ceramic barrier layer that two peripheries spray even equal thickness, but bronze bearing is fixed in the plunger, plunger sleeve is combined on the projection to get final product again, and its difficulty of processing is little, and it is simple to make assembling.
As improvement, radially the central authorities of dividing plate are provided with central through hole, and the central through hole internal fixation has a non-magnetic hard positioning core axle, and the equal evagination in the two ends of this hard positioning core axle is in dividing plate radially, and such structure is easy to assembly.
As improving, the axle sleeve of hard is a bronze bearing again, and the axle sleeve of this material is not easy to wear, long service life.
As also improving, the outside of each bearing is provided with the seal ring that is used for push rod and end cap seal, like this, can effectively avoid malaria to contact with the plunger and the coil of permeability magnetic material, avoids plunger and coil to be corroded.
As further improvement, the outer circumference surface of plunger is provided with radially counterbore of the air channel that extends internally vertically from outer face and, and the inner end surface of plunger is provided with the straight hole that extends internally vertically; Air channel is inner to be communicated with the outer end of counterbore radially, and radially the inner of counterbore is communicated with the inner of straight hole, like this; The air of plunger both sides can pass through air channel, radially counterbore and straight hole free convection; Avoid gas not to the stream resistance, ensure that the plunger slippage is smooth, and; Because the outlet of the straight hole of plunger is at the inner end surface of plunger; And no longer the same with the prior art inward flange that is positioned at the outer circumference surface of plunger, like this, the inner plate that declutches of bar of just having stopped to declutch when bar is declutched in rotation is stuck.
Description of drawings
Fig. 1 is the state reference map that the bar that declutches in the dual-push electromagnetic iron of elevator traction machine of prior art is stuck when declutching.
Fig. 2 is the running condition reference diagram of the dual-push electromagnetic iron of the elevator traction machine of the utility model when being installed on the elevator traction machine.
Fig. 3 is that the analysing and observe of dual-push electromagnetic iron of the elevator traction machine of the utility model faced structural representation.
Fig. 4 be the utility model elevator traction machine dual-push electromagnetic iron analyse and observe the plan structure scheme drawing.
Fig. 5 be in the dual-push electromagnetic iron of elevator traction machine of the utility model mover face the semi-sictional view structural representation.
Fig. 6 is the side-looking structural representation of Fig. 5.
Fig. 7 is the plan structure scheme drawing of the bar that declutches in the dual-push electromagnetic iron of elevator traction machine of the utility model.
Fig. 8 is the side-looking structural representation of the bar that declutches in the dual-push electromagnetic iron of the utility model elevator traction machine.
Fig. 9 is the running condition reference diagram of the bar that declutches in the dual-push electromagnetic iron of the utility model elevator traction machine when declutching.
The parts 101 of the dual-push electromagnetic iron of prior art elevator traction machine, the bar that declutches, 102, plunger, 103, air channel, 104, plate declutches.
The parts 1 of the dual-push electromagnetic iron of the utility model elevator traction machine, cylindrical stator, 1.1, plunger cavity, 1.2, dividing plate radially, 1.3, the hard positioning core axle, 1.3.1, projection, 1.4, shell; 1.5, the magnetic conduction cylindrical shell, 1.6, coil, 2, plunger, 2.1, air channel, 2.2, counterbore radially, 2.3, straight hole; 3, push rod, 4, end cap, 5, bearing, 6, axle sleeve, 7, the bar that declutches, 7.1, plate declutches; 8, frame, 9, traction sheave, 10, brake control lever, 11, brake shoe, 12, retarding spring.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
Like Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, the dual-push electromagnetic iron of the utility model elevator traction machine, it comprises plunger 2 and two non-magnetic push rods 3 of cylindrical stator 1, two magnetic conductions.Cylindrical stator 1 comprises shell 1.4 and magnetic conduction cylindrical shell 1.5; A coil 1.6 is respectively established at magnetic conduction cylindrical shell 1.5 two ends; Two coils 1.6 all are fixed on the inner peripheral surface of shell 1.4 with magnetic conduction cylindrical shell 1.5, and above-mentioned shell 1.4, magnetic conduction cylindrical shell 1.5 and two coils 1.6 constitute the cylindrical stator 1 of dual-push electromagnetic irons.Be provided with the radially dividing plate 1.2 that the inner chamber of cylindrical stator 1 is divided into two plunger cavities 1.1 in the cylindrical stator 1, specifically, be provided with radially dividing plate 1.2 in the magnetic conduction cylindrical shell 1.5, radially dividing plate 1.2 is divided equally into two plunger cavities 1.1 with the inner chamber of cylindrical stator 1.The inner of the outer end of each plunger 2 and a push rod 3 is fixed, a plunger 2 and mover of push rods 3 compositions of fixing with this plunger 2.The two ends of cylindrical stator 1 are fixed with end cap 4, and end cap 4 is provided with bearing 5, and the push rod 3 of each mover is installed on the end cap 4 through bearing 5.The outside of each bearing 5 is provided with and is used for push rod 3 and end cap 4 leak free seal rings.The plunger 2 of each mover is contained in the plunger cavity 1.1 of cylindrical stator 1, and specifically, the axial length of this plunger cavity 1.1 is greater than the axial length of plunger 2, and plunger 2 can be along the axial direction slippage of this plunger cavity 1.1 in this plunger cavity 1.1.The inner of each plunger 2 is provided with pit, and the pit internal fixation has the bronze bearing 6 of hard.Radially the central authorities of dividing plate 1.2 are provided with central through hole; The central through hole internal fixation has a non-magnetic hard positioning core axle 1.3; The equal evagination in the two ends of this hard positioning core axle 1.3 is in dividing plate 1.2 radially, and this has just formed respectively evagination in two non-magnetic projection 1.3.1 of two end faces of dividing plate 1.2 radially.The dead in line of the axis of each projection 1.3.1 and cylindrical stator 1, each plunger 2 is linked on the projection 1.3.1 through axle sleeve 6.There is the slit between the inner peripheral surface of the outer circumference surface of each plunger 2 and cylindrical stator 1.
The cylindrical stator 1 of dual-push electromagnetic iron is provided with a round tube hole, rotatablely in the round tube hole is combined with the bar 7 that declutches, and the inner of the bar 7 that declutches is the flat plate 7.1 that declutches, and its thickness equals the thickness of the radially dividing plate 1.2 of cylindrical stator 1.Under the normal condition, declutch plate 7.1 of flat is vertical state.
The outer circumference surface of plunger 2 is provided with radially counterbore 2.2 of the air channel 2.1 that extends internally vertically from outer face and; The inner end surface of plunger 2 is provided with the straight hole 2.3 that extends internally vertically; Air channel 2.1 is inner to be communicated with the outer end of counterbore 2.2 radially, and radially the inner of counterbore 2.2 is communicated with the inner of straight hole 2.3.
Like this, in the time of in plunger 2 is engaged in plunger cavity 1.1, the gas at plunger 2 two ends can be through air channel 2.1, radially counterbore 2.2 and straight hole 2.3 free flows, and this has just reduced the resistance of plunger 2 slippages.The more important thing is; Like the outlet of the straight hole 2.3 of Fig. 6, plunger shown in Figure 92 inner end surface at plunger 2; And no longer as Fig. 1, be positioned at the inward flange of the outer circumference surface of plunger 2 with prior art, like this, just stopped to rotate the bar 7 inner plates 7.1 that declutch that declutch when declutching bar 7 and be stuck.
As shown in Figure 2; The dual-push electromagnetic iron of the utility model is fixed on the top of tractor stand 8; Traction sheave 9 also is installed on the frame 8, the brake control lever 10 of two symmetries about being hinged with on the frame 8 of traction sheave 9 belows, the top of brake control lever 10 and the push rod of dual-push electromagnetic iron 3 are fixing; The inboard, stage casing of brake control lever 10 is provided with brake shoe 11, also is provided with the retarding spring 12 that the brake shoe that is used to make on the brake control lever 10 11 and traction sheave 9 are held tightly on the brake control lever 10.
Claims (5)
1. the dual-push electromagnetic iron of an elevator traction machine; It comprises plunger (2) and two non-magnetic push rods (3) of cylindrical stator (1), two magnetic conductions; The inner of an outer end of each plunger (2) and a push rod (3) is fixed; Be provided with the radially dividing plate (1.2) that its inner chamber is divided into two plunger cavities (1.1) in the cylindrical stator (1), the two ends of cylindrical stator (1) are fixed with end cap (4), and end cap (4) is provided with bearing (5); Each push rod (3) is installed on the end cap (4) through bearing (5); Each plunger (2) is contained in the plunger cavity (1.1) of cylindrical stator (1), it is characterized in that: the inner of each plunger (2) is provided with pit, and the pit internal fixation has the axle sleeve (6) of hard; Radially two equal evaginations of end face of dividing plate (1.2) have non-magnetic projection (1.3.1); And the dead in line of axis of each projection (1.3.1) and cylindrical stator (1), each plunger (2) is linked on the projection (1.3.1) through axle sleeve (6), has the slit between the inner peripheral surface of outer circumference surface of each plunger (2) and cylindrical stator (1).
2. the dual-push electromagnetic iron of elevator traction machine according to claim 1; It is characterized in that: radially the central authorities of dividing plate (1.2) are provided with central through hole; The central through hole internal fixation has a non-magnetic hard positioning core axle (1.3), and the equal evagination in two ends of this hard positioning core axle (1.3) is in dividing plate (1.2) radially.
3. the dual-push electromagnetic iron of elevator traction machine according to claim 1, it is characterized in that: the axle sleeve of hard (6) is a bronze bearing (6).
4. the dual-push electromagnetic iron of elevator traction machine according to claim 1, it is characterized in that: the outside of each bearing (5) is provided with and is used for push rod (3) and end cap (4) leak free seal ring.
5. the dual-push electromagnetic iron of elevator traction machine according to claim 1; It is characterized in that: the outer circumference surface of plunger (2) is provided with radially counterbore (2.2) of the air channel (2.1) that extends internally vertically from outer face and; The inner end surface of plunger (2) is provided with the straight hole (2.3) that extends internally vertically; Air channel (2.1) is inner to be communicated with the outer end of counterbore (2.2) radially, and radially the inner of counterbore (2.2) is communicated with the inner of straight hole (2.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201806276U CN202529686U (en) | 2012-04-26 | 2012-04-26 | Double-pushing electromagnet for elevator traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201806276U CN202529686U (en) | 2012-04-26 | 2012-04-26 | Double-pushing electromagnet for elevator traction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202529686U true CN202529686U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201806276U Expired - Lifetime CN202529686U (en) | 2012-04-26 | 2012-04-26 | Double-pushing electromagnet for elevator traction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202529686U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050219A (en) * | 2012-12-28 | 2013-04-17 | 宜兴大隆动力科技有限公司 | Disc type single-drive multi-movement electromagnet assembly |
| CN104882243A (en) * | 2015-06-15 | 2015-09-02 | 长屏(北京)电磁防护技术有限公司 | Traction electromagnet provided with double outer-connection straight rods and capable of moving independently as well as realizing method of independent movement |
| CN107381406A (en) * | 2017-09-15 | 2017-11-24 | 布劳恩电梯有限公司 | Drum brake with self-lubricating structure for elevator traction machine |
-
2012
- 2012-04-26 CN CN2012201806276U patent/CN202529686U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050219A (en) * | 2012-12-28 | 2013-04-17 | 宜兴大隆动力科技有限公司 | Disc type single-drive multi-movement electromagnet assembly |
| CN104882243A (en) * | 2015-06-15 | 2015-09-02 | 长屏(北京)电磁防护技术有限公司 | Traction electromagnet provided with double outer-connection straight rods and capable of moving independently as well as realizing method of independent movement |
| CN107381406A (en) * | 2017-09-15 | 2017-11-24 | 布劳恩电梯有限公司 | Drum brake with self-lubricating structure for elevator traction machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
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| CX01 | Expiry of patent term |