CN107244597A - The measurement apparatus of elevator drum brake spring force - Google Patents
The measurement apparatus of elevator drum brake spring force Download PDFInfo
- Publication number
- CN107244597A CN107244597A CN201710461344.6A CN201710461344A CN107244597A CN 107244597 A CN107244597 A CN 107244597A CN 201710461344 A CN201710461344 A CN 201710461344A CN 107244597 A CN107244597 A CN 107244597A
- Authority
- CN
- China
- Prior art keywords
- support member
- brake
- support
- measurement apparatus
- force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
Abstract
The present invention relates to the measurement apparatus of elevator drum brake spring force, including force application mechanism, drive mechanism and measuring mechanism.Force application mechanism include the first support member and can move back and forth the second support member with the first support member corresponding matching, end cap, the brake arm of the first support member, the second support member respectively with brake offset cooperation, open or close brake arm.Drive mechanism drives the second support member to move back and forth with respect to the first support member；Measuring mechanism includes sensing unit, and sensing unit is arranged on the first support member to offset with end cap；Or, sensing unit is arranged on the second support member and offseted with brake arm, to sense the pressure signal for opening brake arm application.Measurement apparatus of the present invention can draw the pressure that holddown spring applies when brake arm is braked to braked wheel exactly, simple, quick, general, effectively the numerical value of the pressure of each group of holddown spring of brake can be detected respectively, check such brake potential safety hazard that may be present in advance to greatest extent.
Description
Technical field
The present invention relates to the detection means of elevator drum brake, more specifically to a kind of elevator drum brake
The measurement apparatus of spring force.
Background technology
Brake is many safety guards of elevator (the up hypervelocity and car accidental movement that include master synchronization)
Final executive component, is also one of most important safety component of elevator, the braking of elevator emergency situation and remains stationary state are all
Depend directly on brake.
The thrust of brake holddown spring is excessive or too small, all can produce influence to the security performance of elevator.Compress bullet
The thrust of spring is excessive, and band-type brake can be caused not open and strap brake operation, accident is ultimately resulted in；Or passenger can be made not feel well,
Even fall down；The thrust of holddown spring is too small, and elevator can be caused in time to stop and cause serious consequence.Therefore,
The thrust of brake holddown spring should meet elevator manufacturer and country relevant standard and specification.
The broad form of elevator brake has drum-type and disc type, and drum brake is relatively low due to simple in construction, cost, generally
Applied to asynchronous machine traction machine and most synchronous motor traction machine.Therefore, most of cargo lift and quite count
The passenger lift of amount all uses such brake.
In these drum brakes, when brake coil dead electricity, under the pressure of holddown spring, both sides brake block
Brake hub (brake hub is with driving the traction sheave of elevator lifting to be connected) is adjacent to, brake is in on-position.Need to release
When putting brake, coil electricity, in the presence of electromagnetic force, iron core opens to both sides, overcomes the pressure of holddown spring and makes therewith
Connected brake arm opens, and brake block release, brake hub releases on-position.
A kind of most common elevator drum brake, the decrement of holddown spring can be adjusted by rotating clamp nut, to adjust
The compression numerical value of its whole spring force, it is corresponding with brake arm by observing some scale value of graduated scale that this, which compresses numerical value,
Position acquisition.
There is following defect in this method：
1. being difficult to the numerical value for directly obtaining spring pressure, spring pressure value depends on experience, the actual pressure of brake spring
Power is difficult to be effectively controlled；
2. occur situations such as brake block and (or) braked wheel have excessive wear phenomenon or enter greasy dirt therebetween,
Although by adjusting the pressure of brake spring it is also possible that elevator obtains effective brake, at this moment elevator has left safe hidden
Suffer from, the especially increase of the pressure of brake spring, may result in the electromagnetic force that former brake coil produces and do not open braking
Device and run elevator internal contracting brake, be finally likely to result in the generation of elevator accident.
As can be seen here, due to lacking feasible field test device, this kind of widely used elevator drum brake is caused
The thrust of holddown spring do not detected, so as to leave potential safety hazard to elevator operation.
The content of the invention
The technical problem to be solved in the present invention is that there is provided a kind of measurement apparatus of elevator drum brake spring force.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of elevator drum brake spring force
Measurement apparatus, including force application mechanism, drive mechanism and measuring mechanism；
The force application mechanism include the first support member and can move back and forth with the first support member corresponding matching the
Two support members, when second support member is moved relative to first support member, first support member, the second support member point
End cap, brake arm not with the brake offset cooperation, open or close the brake arm；
The drive mechanism drives relatively described first support member of the second support member to move back and forth；
The measuring mechanism includes sensing unit, and the sensing unit is arranged on first support member and the end cap
Offset；Or, the sensing unit is arranged on second support member and offseted with the brake arm, the braking is opened to sense
The pressure signal that arm applies.
Preferably, first support member is provided with the first force section offseted with the end cap, and the sensing unit is set
Put relative with end cap side on first force section.
Preferably, first force section is provided with the mounting hole installed for the sensing unit.
Preferably, first support member includes support tube, and first force section is arranged on one end of the support tube；
Second support member coordinates in which can move back and forth along the axial direction of support tube with first support member.
Preferably, second support member plugs the support bar of the endoporus of the support tube including one end and is arranged on
The second force section on the support bar；
Second force section is extended laterally, and can be offseted with the brake arm, second force section is with the support
Bar along the chute the support tube axial movement.
Preferably, the side wall of the support tube is provided with axially disposed chute, and second force application part is in described
Support bar is inserted on the part in the support tube, and second force section is stretched out by the chute.
Preferably, the drive mechanism includes actuator with the support bar threaded, the actuator with it is described
Support tube is rotatably assorted, when the actuator is rotated relative to the support bar, drives the relatively described support tube of support bar
It is mobile.
Preferably, the drive mechanism, which also includes covering, is set to outside the actuator and drives applying for the actuator rotation
Power part.
Preferably, the support tube is externally provided with handle, the force-applying piece include set be set to the collar outside the actuator with
And the handle being connected with the collar.
Preferably, first support member or second support member are provided with scale, with measure first support member,
The displacement of second support member relative movement.
Implement the measurement apparatus of the elevator drum brake spring force of the present invention, have the advantages that：By this hair
The measurement of bright measurement apparatus, the pressure that holddown spring when brake arm is braked to braked wheel applies can be drawn exactly, can simply,
Fast, it is general, effectively the numerical value of the pressure of each group of holddown spring of brake is detected respectively, with this measurement pressure
Whether the pressure for being compared to confirm holddown spring with the design pressure of brake holddown spring is in the design of manufacturer
It is required that in the range of, check such brake potential safety hazard that may be present in advance to greatest extent.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the elevator drum brake in the embodiment of the present invention；
Fig. 2 be the elevator drum brake spring force in the embodiment of the present invention measurement apparatus respectively with end cap and brake arm
Structural representation when offseting；
Fig. 3 is that the second support member of the measurement apparatus in Fig. 2 moves the signal after upset brake arm away from the first support member
Figure.
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now compare accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in figure 1, elevator drum brake in a preferred embodiment of the invention include braked wheel 1, brake arm 2,
End cap 3.Brake arm 2 is swingably set, and brake arm 2 is provided with brake shoe seat 21 and brake shoe 22.Brake arm 2 is provided with holddown spring
4 overturn there is provided elastic force by brake arm 2 to braked wheel 1, and when brake arm 2 is close to braked wheel 1, brake shoe 22 offsets with braked wheel 1,
Braked wheel 1 is braked.
Iron core 31, coil 32 are provided with end cap 3, declutch spanner 33, after coil 32 is powered, iron core 31 opens to both sides, gram
Taking the pressure of holddown spring 4 opens the brake arm 2 being attached thereto, and brake block 22 discharges, and braked wheel 1 releases on-position.
After coil 32 is powered off, the elastic force of holddown spring 4 drives brake arm 2 to be overturn to braked wheel 1, and brake shoe 22 is braked to braked wheel 1.
With reference to shown in Fig. 1 to Fig. 3, the measurement dress of the elevator drum brake spring force in a preferred embodiment of the invention
Putting 5 includes force application mechanism 51, drive mechanism 52 and measuring mechanism 53.
Force application mechanism 51 include the first support member 511 and can move back and forth with the corresponding matching of the first support member 511 the
Two support members 512, when the second support member 512 is moved relative to the first support member 511, the first support member 511, the second support member
512 end cap 3, brake arm 2 respectively with brake offsets cooperation, opens or closes brake arm 2.
Relative first support member 511 of second support member of the driving of drive mechanism 52 512 moves back and forth, will according to measurement request
Second support member 512 is moved to different positions away from the first support member 511, allow measuring mechanism 53 measure correspondence position when pressure
The elastic force of tight spring 4.
Measuring mechanism 53 includes sensing unit 531, and sensing unit 531 is arranged on the first support member 511 and the phase of end cap 3
Support.Preferably, when placing force application mechanism 51, sensing unit 531 is allowed to be placed on end cap 3 and the holddown spring 4 on brake arm 2
Relative position, after brake arm 2, brake shoe 22 are separated with braked wheel 1, it is ensured that the elastic force and sensing unit of holddown spring 4
Between 531 and the first support member 511 to compress power identical.
Due to brake arm 2 center of rotation to the second support member 512 and brake arm 2 the horizontal range D against measuring surface
The vertical distance H against measuring surface than center of rotation to the second support member 512 and brake arm 2 of brake arm 2 is much smaller, for meter
Calculate convenient, if D=0, and it is equipped with the pressure of the holddown spring 4 in the first position A1 after upset will separate braked wheel 1 of swing arm 2
All born by force application mechanism 51, then now between brake shoe 22 and braked wheel 1 without active force.
When second support member 512 is continued away from the movement of the first support member 511, brake arm 2 is driven to continue outside upset, successively
Upset is to second place A2, the 3rd position A3, when brake arm 2 is at first position A1, second place A2, the 3rd position A3, surveys
The active force for the holddown spring 4 that measuring mechanism 53 is measured is respectively F1, F2, F3, then, spring force calculating process is as follows：
Brake arm 2 is in first position A1, and horizontal range of the brake arm 2 between end cap 3 is L1, now, actually
Do not completely disengage from and contact between brake shoe 22 and braked wheel 1, there is active force therebetween.When brake arm 2 is flared to second place A2
Afterwards, completely disengage from and contact between brake shoe 22 and braked wheel 1, at this moment the active force for the holddown spring 4 that measuring mechanism 53 is measured is F2,
Now, horizontal range of the brake arm 2 between end cap 3 is L2.To measure the stiffness coefficient K values of holddown spring 4, it will need to brake
Arm 2 is flared to the 3rd position A3 again, while corresponding directed force F 3 is read, now, level of the brake arm 2 between end cap 3
Distance is L3.
According to spring performance formula, the stiffness coefficient of holddown spring 4：
K=F3-F2/L3-L2,
The thrust of holddown spring 4 when then brake arm 2 is at L1：
F1=F2-KL2-L1；
In some other cases, due to the limitation of elevator brake structure, brake spring power measurement point is difficult in pressure
The point of application of force application mechanism 51, at this moment will be scheduled on other appropriate positions of brake by the tight installed position direct measurement of spring 4
Put, this measurement point can deviate the physical location of holddown spring 4, therefore, the conversion of active force and distance must be carried out, by new position
The elastic force that power is converted into holddown spring 4 is compressed between the support member 511 of sensing unit 531 and first put, braking is finally drawn
The thrust of holddown spring 4 when arm 2 is braked to braked wheel 1.
In other embodiments, sensing unit 531 may also be arranged on the second support member 512 and be offseted with brake arm 2, to feel
Survey the pressure signal for opening the application of brake arm 2.
By the measurement of measurement apparatus 5, the application of holddown spring 4 when brake arm 2 is braked to braked wheel 1 can be drawn exactly
Pressure, simple, quick, general, effectively can be examined to the numerical value of the pressure of each group of holddown spring 4 of brake respectively
Survey, be compared to confirm with the design pressure of this measurement pressure and brake holddown spring 4 holddown spring 4 pressure whether
In the range of design requirement in manufacturer, check that such brake safety that may be present is hidden in advance to greatest extent
Suffer from.
Preferably, the first support member 511 or the second support member 512 are provided with scale 5111, to measure the first support member
511st, the displacement of the second support member 512 relative movement, simultaneously, it can be deduced that brake arm 2 is apart from the distance between end cap 3, at it
In his embodiment, it can also be measured by other outside scales 5111.
First support member 511 is provided with the first force section 5112 offseted with end cap 3, and sensing unit 531 is arranged on first
The side relative with end cap 3 on force section 5112.Preferably, the first force section 5112 is provided with what is installed for sensing unit 531
Mounting hole 5113, is available for the stable placement of sensing unit 531, it is ensured that the accuracy of measurement.Sensing unit 531 and computer etc. are calculated and set
Standby connection, is directly converted to pressure value by pressure signal.
In certain embodiments, the first support member 511 includes support tube 5114, and the first force section 5112 is arranged on support tube
5114 one end, is easy to offset with end cap 3.Second support member 512 can move back and forth along the axial direction of support tube 5114 with first
Support member 511 coordinates, in moving process, can adjust the distance between brake arm 2 and end cap 3.
Further, the second support member 512 include one end plug support tube 5114 endoporus support bar 5121 and
It is arranged on the second force section 5122 on support bar 5121.Second force section 5122 is extended laterally, can be offseted with brake arm 2,
Axial movement of second force section 5122 with support bar 5121 along support tube 5114.
Under the driving of drive mechanism 52, axial movement of second support member 512 along support tube 5114, the second force section
5122 with support bar 5121 when moving, and regulation brake arm 2 is with respect to the distance between end cap 3.Also the second force section 5122 can be taken
Disappear, under the premise of size is suitable, the end for directly allowing support bar 5121 to stretch out support tube 5114 offsets with brake arm 2, in branch
When strut 5121 is moved axially, regulation brake arm 2 is with respect to the distance between end cap 3.
The side wall of support tube 5114 is provided with axially disposed chute 5115, and the second force section 5122 is located at support bar
On part in 5121 insertion support tubes 5114, the second force section 5122 is stretched out by chute 5115, can increase force application mechanism 51
Overall length, be easy to manipulate measurement apparatus 5.Scale 5111 can be arranged in the outside wall surface of support tube 5114, by second
The position of force section 5122 is corresponding to measuring displacement on scale 5111.In other embodiments, scale 5111 may also be arranged on
On support bar 5121, the linear measure longimetry displacement of support tube 5114 is stretched out by support bar 5121.
In certain embodiments, drive mechanism 52 includes the actuator 521 with the threaded of support bar 5121, actuator
521 are rotatably assorted with support tube 5114, when the relative support bar 5121 of actuator 521 is rotated, and drive support bar 5121 is relative to prop up
Stay tube 5114 is moved.
For the ease of rotating drive part 521, drive mechanism 52 is also set to outside actuator 521 including set and drives actuator
521 force-applying pieces 522 rotated.Generally, force-applying piece 522 includes the collar 5221 and and the collar that set is set to outside actuator 521
The handle 5222 of 5221 connections, 5221 sets of the collar is set to after actuator 521, circumferentially positioned with actuator 521, in operating handle
5222 around support bar 5121 rotate when, drive actuator 521 rotate.
Further, for the ease of gripping positioning force application mechanism 51, handle 5116 is externally provided with support tube 5114, for user
Hold, force application mechanism 51 is placed into corresponding position.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of measurement apparatus of elevator drum brake spring force（5）, it is characterised in that including force application mechanism（51）, driving
Mechanism（52）And measuring mechanism（53）；
The force application mechanism（51）Including the first support member（511）With can move back and forth with first support member（511）It is right
The second support member that should coordinate（512）, in second support member（512）Relatively described first support member（511）When mobile, institute
State the first support member（511）, the second support member（512）Respectively with the end cap of the brake（3）, brake arm（2）Offset cooperation,
Open or close the brake arm（2）；
The drive mechanism（52）Drive second support member（512）Relatively described first support member（511）Move back and forth；
The measuring mechanism（53）Including sensing unit（531）, the sensing unit（531）It is arranged on first support member
（511）The upper and end cap（3）Offset；Or, the sensing unit（531）It is arranged on second support member（512）Upper and institute
State brake arm（2）Offset, the brake arm is opened to sense（2）The pressure signal of application.
2. measurement apparatus according to claim 1（5）, it is characterised in that first support member（511）It is provided with and institute
State end cap（3）The first force section offseted（5112）, the sensing unit（531）It is arranged on first force section（5112）On
With the end cap（3）Relative side.
3. measurement apparatus according to claim 2（5）, it is characterised in that first force section（5112）Provided with confession
The sensing unit（531）The mounting hole of installation（5113）.
4. measurement apparatus according to claim 1（5）, it is characterised in that first support member（511）Including support tube
（5114）, first force section（5112）It is arranged on the support tube（5114）One end；
Second support member（512）Can be along support tube（5114）Axial direction move back and forth with first support member（511）
Coordinate.
5. measurement apparatus according to claim 4（5）, it is characterised in that second support member（512）Inserted including one end
It is set to the support tube（5114）Endoporus support bar（5121）And it is arranged on the support bar（5121）On second apply
Power portion（5122）；
Second force section（5122）Extend laterally, with can be with the brake arm（2）Offset, second force section（5122）
With the support bar（5121）Along the chute（5115）In the support tube（5114）Axial movement.
6. measurement apparatus according to claim 5（5）, it is characterised in that the support tube（5114）Side wall be provided with
Axially disposed chute（5115）, second force section（5122）Positioned at the support bar（5121）Insert the support tube
（5114）On interior part, second force section（5122）By the chute（5115）Stretch out.
7. measurement apparatus according to claim 5（5）, it is characterised in that the drive mechanism（52）Including with the branch
Strut（5121）The actuator of threaded（521）, the actuator（521）With the support tube（5114）It is rotatably assorted,
The actuator（521）Relatively described support bar（5121）During rotation, the support bar is driven（5121）Relatively described support tube
（5114）It is mobile.
8. measurement apparatus according to claim 7（5）, it is characterised in that the drive mechanism（52）Also it is set to including set
The actuator（521）Outside and drive the actuator（521）The force-applying piece of rotation（522）.
9. measurement apparatus according to claim 8（5）, it is characterised in that the support tube（5114）It is externally provided with handle
（5116）, the force-applying piece（522）The actuator is set to including set（521）The outer collar（5221）And with the collar
（5221）The handle of connection（5222）.
10. the measurement apparatus according to any one of claim 1 to 9（5）, it is characterised in that first support member（511）
Or second support member（512）It is provided with scale（5111）, to measure first support member（511）, the second support member
（512）The displacement of relative movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710461344.6A CN107244597B (en) | 2017-06-16 | 2017-06-16 | Measuring device for spring force of elevator drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710461344.6A CN107244597B (en) | 2017-06-16 | 2017-06-16 | Measuring device for spring force of elevator drum brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107244597A true CN107244597A (en) | 2017-10-13 |
| CN107244597B CN107244597B (en) | 2023-06-30 |
Family
ID=60018655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710461344.6A Active CN107244597B (en) | 2017-06-16 | 2017-06-16 | Measuring device for spring force of elevator drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107244597B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110790103A (en) * | 2019-11-11 | 2020-02-14 | 昆山科瞬电磁技术有限公司 | Testing device and testing method |
| CN113184698A (en) * | 2020-01-14 | 2021-07-30 | 宝山钢铁股份有限公司 | Spring force detection device and method of traveling hydraulic push rod brake |
| EP3556704B1 (en) * | 2018-04-16 | 2023-08-30 | KONE Corporation | An elevator brake |
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| CN205045636U (en) * | 2015-09-10 | 2016-02-24 | 上海沃证机电技术服务有限公司 | Elevator brake performance testing arrangement |
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| CN206927407U (en) * | 2017-06-16 | 2018-01-26 | 深圳市特种设备安全检验研究院 | The measurement apparatus of elevator drum brake spring force |
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| DE10042724A1 (en) * | 2000-08-31 | 2002-03-14 | Tech Ueberwachungs Ver Hannove | Measurement device for braking force, has hoisting rope with one end wound to drum winch and another end connected flexibly with fixed point via dynamometer |
| CN101059398A (en) * | 2007-04-26 | 2007-10-24 | 中国矿业大学 | Disc type brake performance detection method and the device |
| CN204228316U (en) * | 2014-10-28 | 2015-03-25 | 重庆御捷汽车部件有限公司 | The change of parking drag-line stroke and back-moving spring force value change comprehensive detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3556704B1 (en) * | 2018-04-16 | 2023-08-30 | KONE Corporation | An elevator brake |
| CN110790103A (en) * | 2019-11-11 | 2020-02-14 | 昆山科瞬电磁技术有限公司 | Testing device and testing method |
| CN110790103B (en) * | 2019-11-11 | 2021-06-01 | 苏州科瞬电磁技术有限公司 | Test method |
| CN113184698A (en) * | 2020-01-14 | 2021-07-30 | 宝山钢铁股份有限公司 | Spring force detection device and method of traveling hydraulic push rod brake |
| CN113184698B (en) * | 2020-01-14 | 2022-10-21 | 宝山钢铁股份有限公司 | Spring force detection device and method of traveling hydraulic push rod brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107244597B (en) | 2023-06-30 |
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