CN208279140U - Electromagnet assembly, drum brake and elevator - Google Patents

Abstract

The utility model provides a kind of electromagnet assembly, drum brake and elevator.The electromagnet assembly includes: electromagnet casing；Iron core comprising the first iron core and the second iron core, the first iron core and the second iron core can be movably set in electromagnet casing；Coil comprising first coil and the second coil, first coil energization can be such that the first iron core moves along first direction, and the energization of the second coil can be such that the second iron core moves in a second direction；Manual brake-loosing mechanism comprising the first brake-loosing mechanism and the second brake-loosing mechanism, the first brake-loosing mechanism can be such that the first iron core moves along first direction, and the second brake-loosing mechanism can be such that the second iron core moves in a second direction.In this way, the electromagnet assembly of the utility model can carry out operation of declutching by any one iron core in mobile two iron cores of the bar that declutches, each iron core respectively corresponds the independent bar that declutches, the defect for the bar card resistance that avoids declutching manually.

Description

Electromagnet assembly, drum brake and elevator

Technical field

The utility model relates to elevators field more particularly to a kind of electromagnet assemblies for drum brake including should The drum brake of electromagnet assembly and elevator including the drum brake.

Background technique

Elevator is component part important in modern architecture, once breaking down, can people be caused with great inconvenience.? In the reason of causing elevator faults, the failure of traction machine brake occupies biggish specific gravity.If the system of traction machine brake Dynamic failure, will result in elevator cannot normally stop at predetermined altitude, in some instances it may even be possible to carriage be caused the accidents such as to be fallen or rush to summit.

Drum brake is relatively common traction machine brake.General drum brake has brake shoe, braking bullet The components such as spring and electromagnet.When elevator needs to go up and down, the suction-combining force when being powered using electromagnet is made in brake shoe and traction machine Brake drum disengage, so that elevator can normally be gone up and down.When needing makes elevator be parked in scheduled height, electromagnet power-off to The actuation to iron core is unclamped, at this point, brake shoe is fitted closely with brake drum under the action of the spring force of tripping spring, is prevented The rotation of brake drum, so that traction machine stops.

Current drum brake, although using the structure of double-iron core, because hand release is declutched using one Bar manipulates two iron cores simultaneously, if the card resistance for the bar that declutches will cause brake and can not hold brake drum tightly, and then carriage can be caused to move It is dynamic, or even cause elevator accident.

Utility model content

One of the utility model is designed to provide a kind of electromagnet assembly, can be avoided the bar card resistance that declutches manually and makes At the defect that can not unclamp and/or hold tightly brake.Another of the utility model is designed to provide including the electromagnet group The drum brake and elevator of part.

To achieve the goals above, the utility model adopts the following technical scheme.

The utility model provides a kind of following electromagnet assembly comprising: electromagnet casing；Iron core comprising the One iron core and the second iron core, first iron core and second iron core can movably be set relative to the electromagnet casing It is placed in the electromagnet casing；Coil comprising the first coil being set in the electromagnet casing and the second coil, institute Stating first coil energization can be such that first iron core moves by electromagnetic force and along first direction, and the second coil energization can Move second iron core in a second direction by electromagnetic force；And manual brake-loosing mechanism comprising be set to the electromagnetism The first brake-loosing mechanism and the second brake-loosing mechanism of iron shell, described can be made by manually operating first brake-loosing mechanism One iron core is moved along the first direction, and second iron can manually be made by manually operating second brake-loosing mechanism Core is moved along the second direction.

Preferably, first brake-loosing mechanism includes first declutching bar, and the electricity is inserted into described first one end for declutching bar Magnet shell, described first one end for declutching bar are provided with the first protrusion, and first protrusion can declutch bar with described first Rotation and only stir first iron core so that first iron core is moved along the first direction；And second pine Brake mechanism includes second declutching bar, and the electromagnet casing is inserted into described second one end for declutching bar, and described second declutches bar One end is provided with the second protrusion, second protrusion can with described second declutch bar rotation and only stir second iron Core, so that second iron core is moved along the second direction.

It is highly preferred that first protrusion is identical as second lobe shape.

Preferably, first protrusion is flat plate, and first protrusion is declutched bar perpendicular to described first It is in linear type in axial section, declutches on the end face that bar is declutched described first in first protrusion relative to described first The axle center of bar is offset to side.

Preferably, first protrusion is flat plate, and first protrusion is declutched bar perpendicular to described first Be in linear type in axial section, from described first declutch bar one end along its end on observation, first protrusion is along passing through Described first declutch bar axle center and along described first declutch bar the straight line radially extended it is symmetrical.

It is highly preferred that the axially extending edge part for declutching bar along described first of first protrusion is formed with down Angle.

It is highly preferred that described first declutch bar and described second declutch bar central axis along same linear extension.

The utility model provides a kind of following drum brake comprising any one of above technical scheme technology Electromagnet assembly described in scheme.

Preferably, the drum brake further includes microswitch, and the microswitch is for monitoring the drum brake The working condition of device.

The utility model provides a kind of following elevator comprising above-mentioned drum brake.

By using above-mentioned technical proposal, the utility model provides a kind of electromagnet assembly and including the electromagnet group The drum brake and elevator of part, two iron cores in the electromagnet assembly are kept away in this way by independent bar control movement of declutching The problem of bar card resistance of having exempted to declutch in the prior art causes brake that can not hold brake drum tightly.

Detailed description of the invention

Fig. 1 shows the drum brake of first embodiment according to the present utility model to the 4th embodiment.

Fig. 2 shows the electricity in the drum brake of first embodiment according to the present utility model to the 4th embodiment The top view of magnet assemblies.

Fig. 3 shows the edge figure of the electromagnet assembly in the drum brake of first embodiment according to the present utility model The cross-sectional view of 2 X-X line interception.

Fig. 4 shows the edge figure of the electromagnet assembly in the drum brake of first embodiment according to the present utility model The cross-sectional view of 2 Y-Y line interception.

Fig. 5 shows the edge figure of the electromagnet assembly in the drum brake of second embodiment according to the present utility model The cross-sectional view of 2 X-X line interception.

Fig. 6 shows the edge figure of the electromagnet assembly in the drum brake of second embodiment according to the present utility model The cross-sectional view of 2 Y-Y line interception.

Fig. 7 shows the edge figure of the electromagnet assembly in the drum brake of third embodiment according to the present utility model The cross-sectional view of 2 X-X line interception.

Fig. 8 shows the edge figure of the electromagnet assembly in the drum brake of third embodiment according to the present utility model The cross-sectional view of 2 Y-Y line interception.

Fig. 9 shows the edge figure of the electromagnet assembly in the drum brake of the 4th embodiment according to the present utility model The cross-sectional view of 2 X-X line interception.

Figure 10 shows the edge of the electromagnet assembly in the drum brake of the 4th embodiment according to the present utility model The cross-sectional view of the Y-Y line interception of Fig. 2.

Description of symbols

It declutches handle 1 electromagnet assembly, 11 first brake-loosing mechanism 111 first, 1,111 first protrusion 112 first of bar of declutching It declutches 13 iron core of handle, 131 first iron core 12 second brake-loosing mechanisms 121 second, 1,211 second protrusion 122 second of bar of declutching 132 second iron core, 14 electromagnet casing, 15 3 tripping spring of first coil 16 second coil, 2 microswitch, 4 spring stop 5 brake shoe, 6 brake arm, 7 guide rod, 8 traction machine shell, 9 brake drum.

Specific embodiment

The illustrative embodiments of the utility model are described with reference to the accompanying drawings.It should be appreciated that these specific descriptions are only How to implement the utility model, rather than all feasible sides of exhaustive the utility model for teaching those skilled in the art Formula, without in limitation the scope of the utility model.

(first embodiment)

Illustrate the overall structure of the drum brake of first embodiment according to the present utility model first.

As shown in Figure 1, drum brake includes electromagnet assembly 1, microswitch 2, tripping spring 3, spring stop 4, system Dynamic boots 5, brake arm 6, guide rod 7 and brake drum 9.

Specifically, two guide rods 7 and electromagnet assembly 1 are each attached on traction machine shell 8, and one end of guide rod 7 is solid It is scheduled on traction machine shell 8, the other end of guide rod 7 is provided with spring stop 4.Guide rod 7 passes through brake arm 6, makes brake arm 6 It can be moved along the extending direction of guide rod 7.

Tripping spring 3 is set on guide rod 7, and the outside of brake arm 6 is arranged in tripping spring 3.One end of tripping spring 3 It is against on brake arm 6, the other end of tripping spring 3 is against on spring stop 4, and the bullet of brake arm 6 is applied to by tripping spring 3 Spring force clamps two brake arms 6 inwardly.For electromagnet assembly 1 between two brake arms 6, electromagnet assembly 1 can when being powered So that brake arm 6 overcomes the spring force of tripping spring 3 to move outward.Brake shoe 5, braking are connected by pin shaft on brake arm 6 Boots 5 can with brake arm 6 clamping inwardly and move outward and hold or leave brake drum 9 tightly.

Spring stop 4 is against on the nut for being threaded onto the other end of guide rod 7 by the spring force of tripping spring 3, spring catch The position that the position of plate 4 can be threaded onto guide rod 7 by nut is adjusted.By adjustment spring baffle 4 in the position of guide rod 7, Spring force of the adjustable tripping spring 3 to brake arm 6.The mode and traction machine shell 8 that guide rod 7 can be connected through a screw thread It is fixed, by the screw-in length of the screw thread, also spring force of the adjustable tripping spring 3 to brake arm 6.

Microswitch 2 may be mounted between electromagnet assembly 1 and brake arm 6.When electromagnet assembly 1 is powered, fine motion Switch 2 bounces；When electromagnet assembly 1 powers off, microswitch 2 is braked the pressure of arm 6.It, can be by brake arm by microswitch 2 6 working condition is converted into the electric signal of microswitch 2, consequently facilitating passing through work of the control unit to drum brake of elevator It is monitored as state, whether the movement for being also beneficial to maintenance personal's understanding drum brake is normal.

Illustrate the specific structure of electromagnet assembly referring to the drawings.

(electromagnet assembly)

As shown in figs 2-4, electromagnet assembly 1 includes the first brake-loosing mechanism 11, the second brake-loosing mechanism 12, the first iron core 131, the second iron core 132, electromagnet casing 14, first coil 15 and the second coil 16.

Specifically, electromagnet casing 14 is cylindric, and the first iron core 131 and the second iron core 132 are set to electromagnet casing In 14, and can be along the axial movement of electromagnet casing 14.First coil 15 is wound in around the first iron core 131, the second line Circle 16 is wound in around the second iron core 132.The energization of first coil 15 can make the first iron core 131 outside under the action of electromagnetic force Side (left side in Fig. 2-Fig. 4) is mobile.The energization of second coil 16 can make the second iron core 132 under the action of electromagnetic force outward (right side in Fig. 2-Fig. 4) is mobile.

When electromagnet assembly 1 is in power-off (release) state, brake arm 6 is inwardly moved by the spring force of tripping spring 3 It is dynamic, so that brake shoe 5 is close to brake drum 9, by the friction between brake shoe 5 and brake drum 9, elevator, which can achieve and be maintained at, to stop Only state.

When electromagnet assembly 1 is in (actuation) state of energization, iron core 13 (the first iron core 131 and the second iron core 132) exists It is displaced outwardly under electromagnetic force, the spring force for making brake arm 6 overcome tripping spring 3 is displaced outwardly, and brake arm 6 drives brake shoe 5 leave brake drum 9, rotate brake drum 9, and elevator is in moving condition.

As shown in figs 2-4, the manual brake-loosing mechanism including the first brake-loosing mechanism 11 and the second brake-loosing mechanism 12 is installed on Electromagnet casing 14, for moving iron core 13 outward under 1 off-position of electromagnet assembly, to make brake arm 6 The spring force of tripping spring 3 is overcome to move outward.First brake-loosing mechanism 11 can make the first iron core 131 outward (in Fig. 4 Left side) it is mobile, the second brake-loosing mechanism 12 can make the second iron core 132 mobile outward (right side in Fig. 3).

As shown in figure 4, the first brake-loosing mechanism 11 includes that first bar 111 and first that declutches declutches handle 112.First declutches bar 111 one end forms the first protrusion 1111, and 131 He of the first iron core in electromagnet casing 14 is arranged in the first protrusion 1111 Between second iron core 132.First other end connection first for declutching bar 111 is declutched handle 112, is pulled first and is declutched handle 112 Can make first declutch bar 111 rotation.

First protrusion 1111 first declutch bar 111 end it is axially projecting along its, the first protrusion 1111 be flat plate Shape, the first protrusion 1111 is in the axial section for the bar 111 that declutches perpendicular to first in linear type.First protrusion 1111 is One declutch bar 111 end face on relative to axle center be offset to side, from first declutch bar 111 one end along its end on observation, The axle center that bar 111 is declutched by first in the side of one protrusion 1111.It first protrusion 1111 can be by declutching bar 111 first End processing removes two unequal arch of area and is formed.One of arch is semicircle, another bowed arc is less than Semicircle, as " minor arc bow ".First bar 111 that declutches turns an angle to any direction, such as 30 °, 1111 energy of the first protrusion It is mobile outward (left side in Fig. 4) enough to stir the first iron core 131.

As shown in figure 3, the second brake-loosing mechanism 12 includes that second bar 121 and second that declutches declutches handle 122.Second declutches bar 121 one end forms the second protrusion 1211, and the second protrusion 1211 is across the first iron core 131 and the second iron core 132 Electromagnet casing 14.First declutches bar 111 and second 121 opposite direction of bar that declutches penetrates electromagnet casing 14, and first declutches bar 111 and second declutch bar 121 coaxial arrangement.Second other end connection second for declutching bar 121 is declutched handle 122, pulls second The handle 122 that declutches can make second declutch bar 121 rotation.

Second protrusion 1211 second declutch bar 121 end it is axially projecting along its, 1211 shape of the second protrusion and first Protrusion 1111 is identical.Second bar 121 that declutches turns an angle to any direction, such as 30 °, and the second protrusion 1211 can stir Second iron core 132 is mobile outward (right side in Fig. 3).

In the state that drum brake works normally, first declutches handle 112 and second handle 122 that declutches can not connect It is connected to first bar 111 and second that declutches to declutch bar 121, only first declutches handle 112 and the second pine when needing to declutch manually Lock handle 122 is temporarily installed.

In the state that drum brake works normally, keep the first protrusion 1111 and second convex by holding structure (not shown) Portion 1211 is maintained at upright (vertical) state, make the surface of the first protrusion 1111 and the second protrusion 1211 and the first iron core 131 and The inner side end of second iron core 132 is parallel.That is, the first protrusion 1111 and the second protrusion 1211 neither with the first iron core 131 contacts are not also contacted with the second iron core 132, so that the first protrusion 1111 and the second protrusion 1211 will not influence electromagnet assembly 1 movement.

(second embodiment)

The overall structure and basis of the electromagnet assembly of the drum brake of second embodiment according to the present utility model The overall structure of the electromagnet assembly of the drum brake of the first embodiment of the utility model is identical.In present embodiment In, identical appended drawing reference is marked for component same as the first embodiment, and omit detailed description thereof.

As shown in Figure 5 and Figure 6, the first protrusion 1111 first declutch bar 111 end it is axially projecting along its, the first protrusion 1111 be flat plate, and the first protrusion 1111 is in the axial section for the bar 111 that declutches perpendicular to first in linear type.The Relative to axle center it is offset to side on the end face that bar 111 is declutched first in one protrusion 1111, one end edge for declutching bar 111 from first Its end on observation, the axle center that bar 111 is declutched by first in the first protrusion 1111.It first protrusion 1111 can be by declutching first The end processing of bar 111 removes two unequal arch of area and is formed.Two bowed arcs are respectively less than semicircle, as " bad Arc bow ".First bar 111 that declutches turns an angle to any direction, such as 30 °, and the first protrusion 1111 can stir the first iron Core 131 is mobile outward (left side in Fig. 6).

Second protrusion 1211 second declutch bar 121 end it is axially projecting along its, in the present embodiment, the second protrusion 1211 shape is identical as the shape of the first protrusion 1111.Second bar 121 that declutches turns an angle to any direction, such as 30 °, it is mobile outward (right side in Fig. 5) that the second protrusion 1211 can stir the second iron core 132.

It should be noted that the first protrusion 1111 in second embodiment and the first protrusion in first embodiment The position that 1111 differences are only that the end face for declutching bar 111 first is arranged is different, the second protrusion in second embodiment 1211 with first embodiment in the second protrusion 1211 difference be only that second declutch bar 121 end face setting position not Together.

(third embodiment)

The overall structure and basis of the electromagnet assembly of the drum brake of third embodiment according to the present utility model The overall structure of the electromagnet assembly of the drum brake of the first embodiment of the utility model is identical.In present embodiment In, identical appended drawing reference is marked for component same as the first embodiment, and omit detailed description thereof.

As shown in Figure 7 and Figure 8, the first protrusion 1111 first declutch bar 111 end it is axially projecting along its, the first protrusion 1111 be flat plate, and the first protrusion 1111 is in the axial section for the bar 111 that declutches perpendicular to first in linear type.The Relative to axle center side is offset on the end face that bar 111 is declutched first in one protrusion 1111, and the first protrusion 1111 is not by declutching The axle center of bar.First protrusion 1111 can remove two unequal bows of area by the end processing for declutching bar 111 first Shape is formed, one of them bowed arc is less than half bowlder, and as " minor arc bow ", another bowed arc is greater than semicircle, as " excellent Arc bow ".First bar 111 that declutches turns an angle to any direction, such as 30 °, and the first protrusion 1111 can stir the first iron Core 131 is mobile outward (left side in Fig. 8).

Second protrusion 1211 second declutch bar 121 end it is axially projecting along its, in the present embodiment, the second protrusion 1211 shape is identical as the shape of the first protrusion 1111.Second bar 121 that declutches turns an angle to any direction, such as 30 °, it is mobile outward (right side in Fig. 7) that the second protrusion 1211 can stir the second iron core 132.

It should be noted that the first protrusion 1111 in third embodiment and the first protrusion in first embodiment The position that 1111 differences are only that the end face for declutching bar 111 first is arranged is different, the second protrusion in third embodiment 1211 with first embodiment in the second protrusion 1211 difference be only that second declutch bar 121 end face setting position not Together.

(the 4th embodiment)

The overall structure and basis of the electromagnet assembly of the drum brake of 4th embodiment according to the present utility model The overall structure of the electromagnet assembly of the drum brake of the first embodiment of the utility model is identical.In present embodiment In, identical appended drawing reference is marked for component same as the first embodiment, and omit detailed description thereof.

As shown in Figure 9 and Figure 10, the first protrusion 1111 first declutch bar 111 end it is axially projecting along its, first is convex Portion 1111 is flat plate, and the first protrusion 1111 is in the axial section for the bar 111 that declutches perpendicular to first in linear type. From first declutch bar 111 one end along its end on observation, the first protrusion 1111 about pass through first declutch bar 111 axle center and edge First declutch bar 111 the straight line radially extended it is symmetrical.It first protrusion 1111 can be by declutching bar 111 first The arch of end processing two area equations of removal is formed.Axial one for declutching bar 111 along first of first protrusion 1111 Edge part forms chamfering, so that first bar 111 that declutches is rotated such as 30 ° of rotational angle, the first protrusion 1111 can stir first Iron core 131 is mobile outward (left side in Figure 10), without contacting the second iron core 132.

Second protrusion 1211 second declutch bar 121 end it is axially projecting along its, in the present embodiment, the second protrusion 1211 shape is identical as the shape of the first protrusion 1111.Second protrusion 1211 is provided with chamfering, make second declutch bar 121 rotation Such as 30 ° of rotational angle, it is mobile outward (right side in Fig. 9) that the second protrusion 1211 can stir the second iron core 132, without The first iron core 131 can be contacted.

The position of the chamfering of first protrusion 1111 and the chamfering of the second protrusion 1211 determines that rotation first is declutched 111 He of bar Second rotation direction for declutching bar 121.

It should be noted that the first protrusion 1111 in the 4th embodiment and the first protrusion in first embodiment The position that 1111 differences are not only in that shape difference and the end face for declutching bar 111 first is arranged is different, the 4th embodiment In the second protrusion 1211 from first embodiment the second protrusion 1211 difference be not only in that shape is different and is The position that second end face for declutching bar 121 is arranged is different.

Claims (10)

1. a kind of electromagnet assembly, characterized in that it comprises:

Electromagnet casing；

Iron core comprising the first iron core and the second iron core, first iron core and second iron core can be relative to described Electromagnet casing is movably set in the electromagnet casing；

Coil comprising the first coil being set in the electromagnet casing and the second coil, the first coil energization energy Move first iron core by electromagnetic force and along first direction, second coil energization can make second iron core by Electromagnetic force and move in a second direction；And

Manual brake-loosing mechanism comprising be set to the first brake-loosing mechanism and the second brake-loosing mechanism of the electromagnet casing, pass through Manually operating first brake-loosing mechanism can be such that first iron core moves along the first direction, manually operate Second brake-loosing mechanism can be such that second iron core moves along the second direction.

2. electromagnet assembly according to claim 1, which is characterized in that

First brake-loosing mechanism includes first declutching bar, and the electromagnet casing, institute are inserted into described first one end for declutching bar State one end that first declutches bar and be provided with the first protrusion, first protrusion can with described first declutch bar rotation and only dial First iron core is moved, so that first iron core is moved along the first direction；And

Second brake-loosing mechanism includes second declutching bar, and the electromagnet casing, institute are inserted into described second one end for declutching bar State one end that second declutches bar and be provided with the second protrusion, second protrusion can with described second declutch bar rotation and only dial Second iron core is moved, so that second iron core is moved along the second direction.

3. electromagnet assembly according to claim 2, which is characterized in that first protrusion and second lobe shape It is identical.

4. electromagnet assembly according to claim 2 or 3, which is characterized in that first protrusion is flat plate, institute The first protrusion is stated in the axial section for the bar that declutches perpendicular to described first in linear type, first protrusion is described the One declutch bar end face on declutch bar relative to described first the side that is offset to of axle center.

5. electromagnet assembly according to claim 2 or 3, which is characterized in that first protrusion is flat plate, institute The first protrusion is stated in the axial section for the bar that declutches perpendicular to described first in linear type, declutches the one of bar from described first End along its end on observation, first protrusion about pass through described first declutch bar axle center and declutch bar along described first The straight line radially extended is symmetrical.

6. electromagnet assembly according to claim 5, which is characterized in that declutch bar along described first first protrusion An axially extending edge part be formed with chamfering.

7. electromagnet assembly according to claim 2 or 3, which is characterized in that described first declutch bar and it is described second pine The central axis of restrictor bar is along same linear extension.

8. a kind of drum brake, which is characterized in that it includes electromagnet assembly described in any one of claims 1 to 7.

9. drum brake according to claim 8, which is characterized in that the drum brake further includes microswitch, The microswitch is used to monitor the working condition of the drum brake.

10. a kind of elevator, which is characterized in that it includes drum brake as claimed in claim 9.