CN216638773U - Elevator braking magnetic force device tester - Google Patents
Elevator braking magnetic force device tester Download PDFInfo
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- CN216638773U CN216638773U CN202123188771.2U CN202123188771U CN216638773U CN 216638773 U CN216638773 U CN 216638773U CN 202123188771 U CN202123188771 U CN 202123188771U CN 216638773 U CN216638773 U CN 216638773U
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- brake
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
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Abstract
The utility model discloses an elevator brake magnetic force tester, during testing, a brake is released on one side, an armature on the side which is not released is exerted with push-pull force to enable an integrated member consisting of the armature and a brake shoe to move between a brake wheel and an electromagnet, and the displacement value of any point between the brake wheel and the electromagnet and the magnitude of the push-pull force of the integrated member are recorded. The utility model can realize the on-line test of the elevator braking magnetic device and avoid the trouble of disassembling the traditional braking magnetic device.
Description
Technical Field
The utility model belongs to the field of elevator equipment, and particularly relates to an elevator braking magnetometer tester.
Background
Elevator brakes are typically bilateral magnetic devices. The elevator brake is divided into a double-plunger brake and a block brake according to a specific structural form. During the test of the braking performance of the elevator. The braking magnetic device is required to be released on one side or two sides, and then the braking magnetic device is detached to detect the performance of the braking magnetic device, so that the operation is not only troublesome, but also the testing efficiency of the braking magnetic device is seriously influenced. Thus, a relatively efficient detection tool is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an elevator brake magnetic force device tester to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the elevator braking magnetic force device tester is applied to the elevator braking magnetic force device testing method and comprises a displacement sensor, a force sensor, a push-pull mechanism and a screw rod, wherein the screw rod penetrates through an electromagnet in a sliding mode, one end of the screw rod is fixedly connected with an armature, the other end of the screw rod is fixedly connected with a power end of the push-pull mechanism through a clamp I, the displacement sensor is fixed on one side, away from a brake wheel, of the electromagnet and used for measuring the moving distance of the screw rod, and the force sensor is connected in series with the push-pull mechanism and used for detecting the force generated when the push-pull mechanism moves.
Preferably, the brake device further comprises a support, the support is fixed on one side, away from the brake wheel, of the electromagnet through a second clamp, and the push-pull mechanism is fixed in the support.
The utility model also provides a test method of the elevator brake magnetic device, which comprises the following steps: and the unilateral release brake applies a push-pull force to the armature on the undelivered side to enable the integrated member consisting of the armature and the brake shoe to move between the brake wheel and the electromagnet, and records the displacement value of any point between the brake wheel and the electromagnet and the magnitude of the push-pull force of the integrated member.
Preferably, when the brake is in a contracting brake state, a pulling force is applied to the integrated member to enable the integrated member to move to the electromagnet and abut against the electromagnet, and the displacement of any point in the moving process of the integrated member and the corresponding pulling force value are recorded.
Preferably, when the brake is in the open state, a thrust is applied to the integrated member to move the integrated member toward the brake wheel and abut against the brake wheel, and the displacement of any point in the moving process of the integrated member and the corresponding thrust value are recorded.
Preferably, the tensile force applied to the armature at the moment when the integrated component starts to generate displacement relative to the brake wheel is acquired, and the elastic force value generated by the brake spring on the brake shoe in the brake contracting state is obtained.
Preferably, a coordinate system of the displacement value and the tension value of the integrated member is established, and the tension value when the displacement value of the coordinate system is zero is directly obtained through the coordinate system, so that the elastic value of the brake shoe generated by the brake spring in the brake contracting state is obtained.
Preferably, when the brake is in the brake opening state, the thrust applied to the armature at the moment when the integrated member starts to generate displacement relative to the electromagnet is collected, and the thrust value is added to the elastic value when the integrated member starts to generate displacement relative to the electromagnet, so that the electromagnetic force value generated by the electromagnet on the brake shoe when the brake is in the brake opening state is obtained.
Preferably, a coordinate system of the displacement value of the integrated component and the sum of the tension value and the thrust value is established, and the tension value when the displacement value is c is directly obtained through the coordinate system, so that the electromagnetic force value generated by the electromagnet on the brake shoe when the brake is in the brake-off state is obtained.
Preferably, the corresponding electromagnetic force F of the electromagnet is calculated by the thrust value of any point in the moving process of the integrated component and the elastic force value generated by the brake springElectricity xJudging whether the electromagnetic force of the electromagnet at any point of the integrated component in the moving process is larger than the elastic force value F generated by the brake springBullet xIf F isElectricity x＞FBullet x. The brake meets the performance requirements.
Compared with the prior art, the utility model provides an elevator braking magnetic force device tester and a test method, and the elevator braking magnetic force device tester has the following beneficial effects:
the brake magnetic device tester can directly detect the brake magnetic device on an elevator test site. When the brake is held, the push-pull mechanism pulls the brake shoe to move in the direction away from the brake wheel through the first clamp and the screw rod, the brake spring drives the brake shoe to abut against the outer wheel surface of the brake wheel through extruding the armature, the brake shoe can be completely held tightly by the brake wheel through detecting the elastic acting force generated by the brake spring, and the elastic force value generated by the brake spring to the brake shoe can be detected through the tension sensor on the screw rod; when the brake is opened, the push-pull mechanism pushes the brake shoe to move towards the direction of the brake wheel through the first clamp and the screw rod, the pushing force of the push-pull mechanism and the elastic acting force of the brake spring overcome the electromagnetic force together until the brake shoe is abutted against the brake wheel, the corresponding electromagnetic force of the electromagnet is calculated through the elastic force generated by the force sensor and the brake spring, and whether the electromagnetic force generated by electrifying the electromagnet is larger than the elastic acting force of the brake spring or not can be realized. The whole detection process is simple and convenient to operate, and the performance of the braking magnetic device can be quickly detected.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:
fig. 1 is a schematic view of a block type elevator brake according to the prior art;
FIG. 2 is a schematic diagram of a prior art dual plunger brake;
fig. 3 is a schematic view of the elevator brake magnetic force tester of the present application in an operating state;
FIG. 4 is a schematic view of a portion of the enlarged structure at A in FIG. 2;
fig. 5 is a schematic diagram of a coordinate system of displacement values and tension values of the push-pull mechanism.
In the figure: 1. a brake wheel; 2. an armature; 3. a brake spring; 4. an electromagnet; 5. a brake shoe; 6. a second clamp; 7. a displacement sensor; 8. a first clamp; 9. a push-pull mechanism; 10. a support; 11. a force sensor; 12. a screw; 13. a gap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 2, the structure of the elevator brake in the art is classified into a double plunger brake and a block brake. The brake shoe mainly comprises an electromagnet 4, a brake spring 3, a brake shoe 5 and an armature 2 and is used for braking a brake wheel 1 of an elevator traction machine. Taking a block brake as an example, the braking process is described as follows: in an initial state, one end of the brake spring 3 is fixed on the outer wheel surface of the electromagnet 4 facing the brake wheel 1, the other end of the brake spring abuts against the armature 2, the armature 2 and the brake shoe 5 are fixedly connected to form an integrated component, and the brake shoe 5 abuts against the outer wheel surface of the brake wheel 1 through the elastic acting force of the brake spring 3, so that the brake wheel 1 is prevented from rotating. When the electromagnet 4 is electrified (namely, the elevator works normally), the electromagnetic force of the electromagnet 4 overcomes the elastic acting force of the brake spring 3 to suck the armature 2, and the armature 2 drives the brake shoe 5 to move towards the direction of the electromagnet 4, so that the brake shoe 5 is separated from the brake wheel 1, the brake wheel 1 is enabled to normally operate, and the brake is opened. When the electromagnet 4 is de-energized (namely, the elevator works abnormally), the elastic acting force of the brake spring 3 is greater than the electromagnetic force of the electromagnet 4 (the electromagnetic force is zero), at the moment, the armature 2 is influenced by the elastic acting force of the brake spring 3 to drive the brake shoe 5 to move towards the brake wheel 1, and finally, the brake shoe 5 tightly holds the brake wheel 1, so that the brake holding action of the brake is realized.
Referring to fig. 3-4, the present embodiment provides an elevator braking magnetic force device tester, which is disposed on a side of the electromagnet 4 away from the braking wheel 1, and includes a displacement sensor 7, a force sensor 11, a push-pull mechanism 9, a screw 12, and a bracket 10. The bracket 10 is fixed on one side of the electromagnet 4, which is far away from the brake wheel 1, through the second clamp 6, and the push-pull mechanism 9 is fixed in the bracket 10, wherein the screw 12 penetrates through the electromagnet 4 in a sliding manner. One end of the screw rod 12 is fixedly connected with the armature 2, and the other end of the screw rod is fixedly connected with the power end of the push-pull mechanism 9 through the first clamp 8. The displacement sensor 7 is fixed on the side of the electromagnet 4 facing away from the brake wheel 1 and is used for measuring the moving distance of the screw 12. The force sensor 11 is fixed on one side of the push-pull mechanism 9, which is far away from the power end, and is connected with the bracket 10 for detecting the force generated when the push-pull mechanism 9 acts. The push-pull mechanism 9 adopts an electric push-pull mechanism.
The elevator brake is generally a bilateral magnetic device, so when the elevator brake performance is tested, the brake needs to be released on one side, the push-pull force is applied to the armature 2 on the side which is not released to enable the integrated member consisting of the armature 2 and the brake shoe 5 to move between the brake wheel 1 and the electromagnet 4, and the displacement value and the push-pull force of any point between the brake wheel 1 and the electromagnet 4 of the integrated member are recorded.
When the brake is in a contracting brake state, the bracket 10 can be directly abutted against one side surface of the electromagnet 4 departing from the brake wheel 1 without adopting a clampAnd a second 6 for fixing. The electromagnet 4 is not electrified, no electromagnetic force is generated, and in an initial state, the armature 2 is extruded by the elastic acting force of the brake spring 3 so as to drive the brake shoe 5 to abut against the outer wheel surface of the brake wheel 1. During detection, the push-pull mechanism 9 pulls the brake shoe 5 to move in the direction away from the brake wheel 1 through the first clamp 8 and the screw 12. In fig. 4, the position of M point is the elastic acting force generated by the brake shoe pressed by the brake spring and abutting against the brake wheel, and is marked as FBullet 0. The push-pull mechanism 9 drives the brake shoe 5 to move back to the direction away from the brake wheel 1 in order to overcome the elastic acting force of the brake spring 3, four points of 0, a, b and c in the figure 4 exist in the moving process, wherein the point 0 is the position where the brake shoe 5 is abutted against the brake wheel, and the elastic acting force of the brake spring at the point is FBullet 0The positions of the points a and b are the positions of the brake shoe 5 during the moving process, and the elastic forces of the brake spring 3 at the points a and b are respectively marked as FBullet a、FBullet bPoint c is the position where the brake shoe 5 abuts against the electromagnet 4, i.e. the maximum elastic force of the brake spring 3 at point c is marked as FBullet cAnd because the pulling force generated by the push-pull mechanism 9 is different, the force sensor 11 detects different pulling force values generated by the push-pull mechanism 9 and records the values as FPulling device. Meanwhile, when the push-pull mechanism 9 pulls the brake shoe 5 to move, the displacement sensor 7 can detect different displacement values which are recorded as SPulling deviceAnd when the displacement sensor 7 detects different displacement values, the displacement values correspond to the tension values detected by the force sensor 11.
Establishing a coordinate system of displacement values and tension values, wherein for two points a, b, the force sensor 11 is capable of directly detecting the tension values of the two points, i.e. FDrawing a、FB is a pull rod(ii) a The displacement sensor 7 directly detects the displacement value of the two points, i.e. SDrawing a、SB is a pull rod. The MN oblique line can be obtained through the two groups of tension and displacement values of a and b.
Therefore, when the brake is in the contracting brake state, the embodiment has two ways to measure the extrusion force generated by the brake spring 3 extruding the brake shoe 5:
firstly, directly reading the tension value of the MN oblique line at the position of 0 point (displacement value) through a coordinate system to obtain the extrusion force generated by the brake shoe 5 extruded by the brake spring 3.
And secondly, recording the initial displacement generation moment of the displacement sensor 7, and reading the numerical value displayed by the force sensor 11 at the moment to obtain the extrusion force generated by the brake shoe 5 extruded by the brake spring 3.
When the brake is in an opening state, the electromagnet 4 is electrified to generate electromagnetic force in the initial state, and the electromagnetic force is marked as FElectric CAt this time, the attraction force of the electromagnet 4 to the armature 2 is the maximum, that is, the position of c point in fig. 4 is marked as FElectric c. When the tester works, the push-pull mechanism 9 pushes the brake shoe 5 to move towards the brake wheel 1 through the first clamp 8 and the screw 12, when the push-pull mechanism 9 pushes the brake shoe 5 to move towards the brake wheel 1, the pushing force of the push-pull mechanism 9 and the elastic acting force of the brake spring 3 overcome the electromagnetic force together until the brake shoe 5 abuts against the brake wheel 1, at the moment, the brake shoe 5 does not move any more, four-point positions of 0, a, b and c in the figure 4 exist in the moving process, wherein the point 0 is the position where the brake shoe 5 abuts against the brake wheel 1, at the moment, the adsorption force of the electromagnet 4 to the armature 2 is minimum, namely the point 0 in the figure 4 is marked as the point FElectric 0Meanwhile, in the action process of the push-pull mechanism 9, the displacement sensor 7 can detect different displacement values which are recorded as SPush awayThe force sensor 7 will also detect the different thrust values generated by the action of the push-pull mechanism 9, and is marked as FPush away。
Since the range of motion of the brake shoe 5 between the brake wheel 1 and the electromagnet 2 is small, i.e. the gap 13 between the brake spring 3 and the armature 2 is small, in this condition the slope between the distance the brake shoe 5 moves and the attraction force of the electromagnetic force on the brake shoe 5 is approximately seen as an inclined straight line.
Since the pushing force of the push-pull mechanism 9 and the elastic force of the brake spring 3 overcome the electromagnetic force, F is applied to the points a and bElectric a＝FBullet a+FPush away aSame, FElectric b＝FBullet b+FPush bSince the elastic coefficient K of the brake spring 3 is already obtained, only the S detected by the displacement sensor 7 is neededPush away a，SPush bF detected by the force sensor 11Push away a，FPush away bThen F can be calculatedElectric a，FElectric bThe numerical value of (c).
FElectric cI.e. the maximum attraction force of the electromagnet 4 on the armature 2. Meanwhile, in order to ensure that the tester can work normally, FElectric CShould be greater than FBullet cEnsures that the electromagnet 4 can completely adsorb the armature 2.
The brake shoe 5 is at any position in the range of motion between the brake wheel 1 and the electromagnet 4, and the electromagnetic force FElectricity xElastic force F of brake spring 3Bullet x. In actual working condition, F can be requiredElectric 0A value of greater than FBullet cThe numerical value of (c). The brake is guaranteed to work absolutely and normally.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (2)
1. The utility model provides an elevator braking magnetic device tester, a serial communication port, including displacement sensor (7), force transducer (11), push-and-pull mechanism (9) and screw rod (12), screw rod (12) slide and wear to locate in electro-magnet (4), the one end and armature (2) of screw rod (12) are fixed continuous, the other end passes through anchor clamps (8) and push-and-pull mechanism (9) power end fixed connection, displacement sensor (7) are fixed and are used for measuring the distance that screw rod (12) removed on one side of electro-magnet (4) deviating from braked wheel (1), force transducer (11) concatenate in push-and-pull mechanism (9) and are used for detecting the power that push-and-pull mechanism (9) produced when moving.
2. The tester for the elevator braking magnetic force device according to the claim 1, characterized by further comprising a bracket (10), wherein the bracket (10) is fixed on the side of the electromagnet (4) departing from the brake wheel (1) through a second clamp (6), and the push-pull mechanism (9) is fixed in the bracket (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123188771.2U CN216638773U (en) | 2021-12-17 | 2021-12-17 | Elevator braking magnetic force device tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123188771.2U CN216638773U (en) | 2021-12-17 | 2021-12-17 | Elevator braking magnetic force device tester |
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| CN216638773U true CN216638773U (en) | 2022-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014197A (en) * | 2021-12-17 | 2022-02-08 | 河南大亘计量检测研究院有限公司 | Elevator braking magnetic force device tester and testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014197A (en) * | 2021-12-17 | 2022-02-08 | 河南大亘计量检测研究院有限公司 | Elevator braking magnetic force device tester and testing method |
| CN114014197B (en) * | 2021-12-17 | 2024-06-11 | 河南大亘计量检测研究院有限公司 | Elevator brake magnetic device tester and test method |
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