CN208887827U - Synchnorous gearless dragging machine braking-force detecting device - Google Patents
Synchnorous gearless dragging machine braking-force detecting device Download PDFInfo
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- CN208887827U CN208887827U CN201821444483.4U CN201821444483U CN208887827U CN 208887827 U CN208887827 U CN 208887827U CN 201821444483 U CN201821444483 U CN 201821444483U CN 208887827 U CN208887827 U CN 208887827U
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- torsion bar
- traction sheave
- dragging machine
- counterweight
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Abstract
The utility model discloses a kind of synchnorous gearless dragging machine braking-force detecting device, including torsion bar, weight tray and test counterweight, torsion bar is removably installed in the traction sheave of synchnorous gearless dragging machine, and torsion bar is located at the counterweight side of traction sheave and in horizontally disposed, torsion bar protrudes from outside traction sheave, weight tray hang on one end of the separate traction sheave of torsion bar, test counterweight optionally loads in weight tray, if the test counterweight being recorded in weight tray makes torsion bar deviate original horizontal position, then the brake force of synchnorous gearless dragging machine is insufficient, if torsion bar maintains original horizontal position under the action of testing counterweight, then illustrate that the brake force of synchnorous gearless dragging machine is qualified, therefore, position by observing torsion bar can intuitively find out whether the brake force of synchnorous gearless dragging machine is qualified, it is easy to manage Solution, detection method is simple, result is accurate, and can be with quantitative analysis.
Description
Technical field
The utility model relates to elevator technology fields more particularly to a kind of synchnorous gearless dragging machine braking forces measuring to fill
It sets.
Background technique
Elevator must be equipped with safety guard, being capable of urgent stop when breaking down in use so as to elevator, wherein
Elevator internal contracting brake is the important component of elevator safety stop, is that lift car is in static and motor and is under power failure state and prevents electricity
The electromechanical assembly that ladder moves again, that is, be the critical component of car slipping above and below guaranteeing elevator not.
In elevator use process, if elevator internal contracting brake adjusts situations such as not in place or band-type brake friction plate is worn, all can
The band-type brake power for making band-type brake act on host is insufficient, and elevator is caused to cannot keep when stopping terraced or long of safety and steady when operation stops ladder
Between stop not can guarantee not car slipping under scalariform state, serious security risk can be brought to elevator and passenger.Therefore, to synchronizing anodontia drag
The detection for drawing the brake force of machine is an especially important security function inspection, and present way is that brake does not start, by soft
Part controls frequency converter output torque and is detected, but when control detection is implemented in software, given torque whether correct nothing
From verifying, furthermore the result detected can not be reflected intuitively, not readily understood.
Therefore, it is necessary to provide it is a kind of test simple, readily understood, visual result, can the synchronization gear wheel free of quantitative analysis drag
Draw brake force detection device, to solve the above problems.
Utility model content
The purpose of this utility model is to provide it is a kind of test simple, readily understood, visual result, can quantitative analysis synchronization
Gearless machine braking-force detecting device.
To achieve the above object, the technical solution of the utility model are as follows: a kind of synchnorous gearless dragging machine brake force is provided
Detection device comprising torsion bar, weight tray and test counterweight, wherein the torsion bar is removably installed in synchronous nothing
The traction sheave of gear traction machine, and the torsion bar is located at the counterweight side of the traction sheave and in horizontally disposed, the torque
Bar protrudes from outside the traction sheave, and the weight tray hang on one end far from the traction sheave of the torsion bar, described
Test counterweight optionally loads in the weight tray, if the test counterweight being recorded in the weight tray make it is described
Torsion bar deviates original horizontal position, then the brake force of the synchnorous gearless dragging machine is insufficient.
Preferably, the weight of the test counterweight is corresponding with the payload ratings of elevator, therefore can be according to different size
Elevator select to test counterweight accordingly respectively so that test is flexible.
Preferably, being equipped with fixed mechanism between the torsion bar and the traction sheave, the fixed mechanism is along the traction
The diametrical direction of wheel is arranged and passes through the center of circle of the traction sheave.
Preferably, the fixed mechanism includes mutually matched fixation hole and fixing piece, in the fixation hole, fixing piece
One is set on the traction sheave, and the other of the fixation hole, fixing piece are set on the torsion bar, and wherein described in one
Fixation hole or a fixing piece are set to the center point of the traction sheave.
Preferably, the side of the separate counterweight of the traction sheave is additionally provided with balanced structure, the balanced structure with it is described solid
Determine mechanism to be arranged along the same diametrical direction of the traction sheave, keeps the stress of traction sheave more flat by the setting of the balanced structure
Weighing apparatus, to guarantee the accuracy of detection.
Preferably, the balanced structure is fixation hole or fixing piece on the traction sheave, and the balanced structure
Fixation hole or the quantity and position and the fixation hole or fixing piece of the fixed mechanism of fixing piece be arranged in a one-to-one correspondence.
Preferably, the weight of the test counterweight is determined according to following formula:
M2=(X1M1)/X2=0.15Q
Wherein, M2 is the weight of the test counterweight, and M1 is the weight of required load when elevator no-load is tested, and X1 is institute
The radius of traction sheave is stated, X2 is the length of the torsion bar, and Q is the payload ratings.
Preferably, the required weight M1 being added in is determined according to the following formula when elevator no-load test: M1=0.75Q.
Compared with prior art, due to the synchnorous gearless dragging machine braking-force detecting device of the utility model, by
Mounting torque bar on the traction sheave of synchnorous gearless dragging machine, and the torsion bar is located at the counterweight side of traction sheave and sets in level
It sets, one end far from the traction sheave of torsion bar is linked with counterweight support, specified with elevator by loading in weight tray
The corresponding test counterweight of load-carrying makes to test counterweight to torsion bar generation active force, when torsion bar is under the action of testing counterweight
When deviateing original horizontal position, then illustrate that the brake force of synchnorous gearless dragging machine is insufficient, if torsion bar is in test counterweight
Effect is lower to maintain original horizontal position, then illustrates that the brake force of synchnorous gearless dragging machine is qualified, therefore, by observing torsion bar
Position can intuitively find out whether the brake force of synchnorous gearless dragging machine qualified, it can be readily appreciated that and detection method it is simple,
It is easily operated, result is accurate, and can be with quantitative analysis.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the utility model synchnorous gearless dragging machine braking-force detecting device.
Fig. 2 is the structural schematic diagram of another embodiment of the utility model synchnorous gearless dragging machine braking-force detecting device.
Fig. 3 is the torque conversion schematic illustration of traction sheave in Fig. 1.
Specific embodiment
The embodiments of the present invention are described referring now to the drawings, similar element numbers represent similar member in attached drawing
Part.
As shown in Figure 1 and Figure 2, synchnorous gearless dragging machine braking-force detecting device 100 provided by the utility model is fitted
It is detected for the brake force to synchnorous gearless dragging machine 200, but not limited to this.Wherein, synchnorous gearless dragging machine
200 include two brakings that installation pedestal 210, the traction sheave 220 being installed in installation pedestal 210 and corresponding traction sheave 220 are arranged
Arm 230, and brake block 240 is equipped on each brake arm 230, when elevator stopping, brake arm 230 acts and makes to brake
Brake shoe 240 holds traction sheave 220 tightly to limit its rotation, and when elevator resumes operation, brake arm 230 acts and makes brake block 240
Unclamp traction sheave 220.
With continued reference to shown in Fig. 1-2, the synchnorous gearless dragging machine braking-force detecting device 100 of the utility model includes
Torsion bar 110, weight tray 120 and test counterweight 130.Wherein, torsion bar 110 is removably installed in pair of traction sheave 220
It weighs side and is in horizontally disposed, and torsion bar 110 protrudes from except traction sheave 220, weight tray 120 hang on the torsion bar
One end of 110 separate traction sheave 220, weight tray 120 are used for bearing test counterweight 130, the test counterweight 130 and elevator
Payload ratings it is corresponding.Therefore, after being packed into the test counterweight 130 of corresponding weight in weight tray 120, if test counterweight
130 make torsion bar 110 deviate original horizontal position, then illustrate that the brake force of synchnorous gearless dragging machine 200 is insufficient, if torque
Bar 110 remains at original horizontal position, then illustrates that the brake force of synchnorous gearless dragging machine 200 is qualified.
More specifically, being equipped with fixed mechanism 140, the fixed mechanism 140 between the torsion bar 110 and traction sheave 220
It is arranged and passes through the center of circle of traction sheave 220 along the diametrical direction of traction sheave 220, torsion bar 110 is fixed by fixed mechanism 140
In on traction sheave 220, so that one end of torsion bar 110 be made to be fixed on the center point of traction sheave 220.
It is highly preferred that the fixed mechanism 140 includes mutually matched fixation hole 141 and fixing piece 142, the fixation hole
141, one of fixing piece 142 is set on traction sheave 220, and the other of the fixation hole 141, fixing piece 142 are set to power
On square bar 110, and wherein a fixation hole 141 or a fixing piece 142 are set to the center point of traction sheave 220.
As shown in Figure 1, opening up fixation hole in the counterweight side of traction sheave 220 in an embodiment of the utility model
141, fixation hole 141 has at least two, and fixation hole 141 opens up at intervals along the radial direction of traction sheave 220, and wherein one
A fixation hole 141 is opened in the center point of traction sheave 220.Accordingly, one end of torsion bar 110 is equipped at least two fixing pieces
142, and the position of fixing piece 142 and the position of fixation hole 141 can correspond.When installation, make the fixation on torsion bar 110
The one-to-one correspondence of part 142 is fixed in each fixation hole 141, realizes the installation of torsion bar 110, and one end of torsion bar 110 is fixed on
The center point of traction sheave 220, while torsion bar 110 extends horizontally.
In the present embodiment, fixing piece 142 is preferably bolt, and fixation hole 141 is preferably bolt hole, so that torsion bar 110
Installation it is more convenient, certainly, be not limited with bolt and bolt hole.
Referring now to shown in Fig. 2, in another embodiment of the utility model, the separate counterweight of the traction sheave 220
Side is additionally provided with balanced structure 150, and same diametrical direction of the balanced structure 150 with fixed mechanism 140 along traction sheave 220 is set
It sets, balances the stress of traction sheave 220 more by the setting of the balanced structure 150, to guarantee the accuracy of detection.
Preferably, the balanced structure 150 is the fixation hole on traction sheave 220, the fixation hole of balanced structure 150
With the fixation hole 141 of fixed mechanism 140 be opened in traction sheave 220 it is same diametrically, and the number of the fixation hole of balanced structure 150
One fewer than the quantity of the fixation hole 141 of fixed mechanism 140 is measured, the fixation hole of balanced structure 150 and removing for fixed mechanism 140 are justified
The fixation hole 141 except fixation hole 141 at the heart is centrosymmetric setting, that is to say, that the fixation hole of balanced structure 150 with
Spacing, size of remaining fixation hole 141 in addition to the fixation hole 141 of the center point of fixed mechanism 140 etc. are corresponded and are set
It sets, to make the uniform force on traction sheave 220.
It is to be appreciated that the balanced structure 150 is not limited to fixation hole, when being provided that fixing piece on traction sheave 220
When 142, then balanced structure 150 is also correspondingly arranged corresponding fixing piece, and set-up mode is identical as the set-up mode of aforementioned fastening hole,
It is not repeated to describe.
It is recombined shown in Fig. 1-3 below, the weight of the test counterweight 130 in the utility model and the payload ratings of elevator
It is corresponding, that is, to select to test counterweight 130 respectively according to the elevator of different size accordingly to be tested, below to originally practical
The determination method of novel middle test counterweight 130 is illustrated.
Firstly, all there is following relationship: W0=P+Q, W1=P+kQ after the elevator design of any specification is completed,
In, W0 is elevator system quality, and W1 is counterweight mass, and P is carriage self weight, and Q is payload ratings.Meanwhile according to national standard, aforementioned system
Number k is usually 0.5, that is, k ≈ 0.5.Therefore, it can be deduced that W1=P+0.5Q.And according to above-mentioned relation, it can also obtain: empty
Mounted mass difference W2=W1-P=0.5Q, mass of system difference W1-W0=0.5Q.
In addition, known to those skilled in the art: when elevator is with payload ratings, normal speed operation, traction
The output torque of machine 200 is rated moment, and the torque in traction wheel footpath is conversion torque.Accordingly it is known that mass of system is poor
W1-W0=0.5Q corresponds to specified conversion torque, that is, corresponding one times of the conversion torque of the 0.5Q, and the specified conversion torque
It is that itself is just intrinsic after elevator system design is completed.
In conjunction with above description it is found that empty mass difference W2 when elevator no-load is run also is 0.5Q, that is, empty mass is poor
W2 is equal with the mass of system difference of elevator, is 0.5Q, so obtain the empty mass difference W2 (0.5Q) when elevator no-load operation
Also one times of conversion torque is corresponded to, it follows that the corresponding relationship between empty mass difference W2 and conversion torque, that is, 0.5Q's
One times of correspondence of conversion torque of poor quality.
In addition, according to the regulation of 12.4.2.1 in GB 7588-2003: the conversion torque of elevator should be 2.5 times, that is, in electricity
When being tested under terraced no-load condition, it is also necessary to increase by 1.5 times of conversion torque, and 1.5 times of the conversion torque is scaled sky
There is following relationship: M1=1.5x0.5Q=0.75Q when mounted mass difference, wherein M1 required load when being elevator no-load test
Quality.
Referring again to the resultant couple shown in Fig. 3, being equal in traction wheel footpath due to the resultant couple of test load, it is possible to obtain
Following relational expression: X1/X2=F2/F1, wherein F1=M1g, F2=M2g, X1 are the radius of the traction sheave 220, and X2 is
The length of torsion bar 110, M2 are the weight of the test counterweight 130；It may further show that: X1/X2=M2/M1 accordingly may be used
To calculate weight M2=(X1M1)/X2 of test counterweight 130.
The radius of usual traction sheave 220 is fixed value, and the length of torsion bar 110 then can according to need flexible setting,
Such as in a kind of embodiment of the utility model, the radius X1=0.4m of traction sheave 220, while torsion bar 110 is set
Length X2=2m, due to M1=0.75Q, so can be derived that weight M2=(X1M1)/X2=of test counterweight 130
0.15Q, according to the formula it can be concluded that the weight of counterweight 130 is tested required for the elevator of different size, specifically such as 1 institute of table
Show:
| Serial number | Payload ratings (kg) | Traction sheave radius (m) | Torsion bar (m) | It tests counterweight (kg) |
| 1 | 800 | 0.4 | 2 | 200 |
| 2 | 1000 | 0.4 | 2 | 250 |
| 3 | 2000 | 0.4 | 2 | 500 |
Table 1
It is recombined shown in Fig. 1-3 below, to the utility model synchnorous gearless dragging machine braking-force detecting device 100
Test philosophy and process be illustrated.
When elevator stopping state, brake arm 230 is not switched on and so that brake block 240 is held traction sheave 220 tightly and realize to electricity
The stop of ladder.When elevator no-load detects, torsion bar 110 is installed on traction sheave 220 first, that is, by fixing piece 142 by power
Square bar 110 is installed in the fixation hole 141 on traction sheave 220, and torsion bar 110 is fixed on the counterweight side of traction sheave 220 simultaneously
It extends horizontally, the center point on traction sheave 220 is fixed in one end of torsion bar 110.
Then, weight tray 120 is hung on to one end for protruding from traction sheave 220 of torsion bar 110, and in weight tray
The test counterweight 130 of corresponding weight is put into 120, the weight of the test counterweight 130 can be obtained according to the inquiry of above-mentioned table 1, for example, working as
When the payload ratings of elevator are 800kg, the test counterweight 130 of 200kg is selected.
After being put into test counterweight 130, if torsion bar 110 is detached from original horizontal position and moves down, illustrate to brake
Power is unqualified, if torsion bar 110 is maintained at original horizontal position, illustrates brake force qualification, it is possible thereby to intuitively find out
Testing result, and detection process is easily operated.
To sum up, due to the synchnorous gearless dragging machine braking-force detecting device 100 of the utility model, by synchronize it is anodontia
Mounting torque bar 110 on the traction sheave 220 of traction machine 200 is taken turns, and the torsion bar 110 is located at the counterweight side of traction sheave 220 simultaneously
In being horizontally disposed with, one end of the separate traction sheave 220 of torsion bar 110 is linked with weight tray 120, by weight tray 120
It is interior to load test counterweight 130 corresponding with the payload ratings of elevator, make to test counterweight 130 to 110 generation of torsion bar effect
Power then illustrates synchnorous gearless dragging machine when torsion bar 110 deviates original horizontal position under the action of testing counterweight 130
200 brake force is insufficient, if torsion bar 110 still maintains original horizontal position under the action of testing counterweight 130, illustrates same
The brake force for walking gearless machine 200 is qualified, and therefore, the position by observing torsion bar 110 can intuitively find out synchronization
Whether the brake force of gearless machine 200 qualified, it can be readily appreciated that and detection method is simple, easily operated, result is accurate, and
It can be with quantitative analysis.
The structure of the other parts of synchnorous gearless dragging machine 200 and principle involved in the utility model are this field
Conventional arrangement mode, is no longer described in detail herein known to those of ordinary skill.
It above disclosure is merely preferred embodiments of the utility model, certainly cannot be practical new to limit this with this
The interest field of type, therefore equivalent variations made according to the patent scope of the utility model still belong to the utility model and are covered
Range.
Claims (8)
1. a kind of synchnorous gearless dragging machine braking-force detecting device characterized by comprising
Torsion bar, the torsion bar is removably installed in the traction sheave of synchnorous gearless dragging machine, and the torsion bar is located at
The counterweight side of the traction sheave and in horizontally disposed, the torsion bar protrudes from outside the traction sheave；
Weight tray, the weight tray hang on one end far from the traction sheave of the torsion bar；
Counterweight is tested, the test counterweight optionally loads in the weight tray, if being recorded in the weight tray
The test counterweight makes the torsion bar deviate original horizontal position, then the brake force of the synchnorous gearless dragging machine is insufficient.
2. synchnorous gearless dragging machine braking-force detecting device as described in claim 1, which is characterized in that the test counterweight
Weight it is corresponding with the payload ratings of elevator.
3. synchnorous gearless dragging machine braking-force detecting device as described in claim 1, which is characterized in that the torsion bar with
Fixed mechanism is equipped between the traction sheave, the fixed mechanism is arranged along the diametrical direction of the traction sheave and drags described in passing through
The center of circle of running wheel.
4. synchnorous gearless dragging machine braking-force detecting device as claimed in claim 3, which is characterized in that the fixed mechanism
Including mutually matched fixation hole and fixing piece, one of the fixation hole, fixing piece are set on the traction sheave, described solid
The other of hole, fixing piece are determined on the torsion bar, and wherein a fixation hole or a fixing piece are set to institute
State the center point of traction sheave.
5. synchnorous gearless dragging machine braking-force detecting device as claimed in claim 3, which is characterized in that the traction sheave
Side far from counterweight is additionally provided with balanced structure, the balanced structure and the fixed mechanism along the same diameter of the traction sheave
Direction setting.
6. synchnorous gearless dragging machine braking-force detecting device as claimed in claim 5, which is characterized in that the balanced structure
For the fixation hole or fixing piece on the traction sheave.
7. synchnorous gearless dragging machine braking-force detecting device as claimed in claim 2, which is characterized in that the test counterweight
Weight according to following formula determine:
M2=(X1M1)/X2=0.15Q
Wherein, M2 is the weight of the test counterweight, and M1 is the weight of required load when elevator no-load is tested, and X1 is the traction
The radius of wheel, X2 are the length of the torsion bar, and Q is the payload ratings.
8. synchnorous gearless dragging machine braking-force detecting device as claimed in claim 7, which is characterized in that the elevator no-load
The required weight M1 being added in is determined according to following formula when test: M1=0.75Q.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821444483.4U CN208887827U (en) | 2018-09-03 | 2018-09-03 | Synchnorous gearless dragging machine braking-force detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821444483.4U CN208887827U (en) | 2018-09-03 | 2018-09-03 | Synchnorous gearless dragging machine braking-force detecting device |
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| CN208887827U true CN208887827U (en) | 2019-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029823A (en) * | 2018-09-03 | 2018-12-18 | 快意电梯股份有限公司 | Synchnorous gearless dragging machine braking-force detecting device and detection method |
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2018
- 2018-09-03 CN CN201821444483.4U patent/CN208887827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029823A (en) * | 2018-09-03 | 2018-12-18 | 快意电梯股份有限公司 | Synchnorous gearless dragging machine braking-force detecting device and detection method |
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