CN203682951U - Novel signal output stabilizing device for moment limiter of tower crane - Google Patents
Novel signal output stabilizing device for moment limiter of tower crane Download PDFInfo
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- CN203682951U CN203682951U CN201420018676.9U CN201420018676U CN203682951U CN 203682951 U CN203682951 U CN 203682951U CN 201420018676 U CN201420018676 U CN 201420018676U CN 203682951 U CN203682951 U CN 203682951U
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- 230000000087 stabilizing effect Effects 0.000 title abstract 2
- 230000007935 neutral effect Effects 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a novel signal output stabilizing device for a moment limiter of a tower crane, relating to the technical field of a safety device in the tower crane. An input end of a device power supply is connected to 220V alternating current, an output end of the power supply is divided into two ways, a first way is connected with a zero line through a moment microswitch K1 of the moment limiter and a coil of a delay relay KT1, a second way is divided into two ways after a scram button SA1, one way is connected with the zero line through a contact of the delay relay KT1, a motor forward button SB1 and a coil of a motor forward contactor KM1, and the other way is connected with the zero line after passing through a motor reverse button SB2 and a coil of a motor reverse contactor KM2. According to the device, the moment microswitch is frequently triggered due to periodic shaking of the tower crane when an arch plate moment limiter is in critical state, and the signal output stability of the moment limiter can be enhanced.
Description
Technical field
The utility model relates to the technical field of safety devices in tower machine, relates in particular to a kind of Novel tower machine power square restrictor signal output stabilizer.
Background technology
Along with the develop rapidly of national economy, construction tower crane is being brought into play great function in various fields, such as in building ground, is all widely used at underground hoistway etc.Flourish along with tower crane in recent years, people are also more and more higher to the requirement of tower crane, pursue intelligently, efficient, simple to operate, stable performance, save labour power, save the energy.On tower machine, can use limiter of moment, can automatically detect hoisting crane and hang quality and the residing angle of crane arm of carrying, and the device that can demonstrate its nominal payload and actual load, swinging radius, the residing angle of crane arm claims limiter of moment.Tower-crane torque limiter is divided into two kinds of mechanical type and electronic types, is divided into again the various ways such as thick stick inclined and bow be board-like in mechanical type.Wherein bend board-like load moment limiter because of simple in structure, application is at present more extensive, bends board-like limiter of moment and is mainly arranged on the main chord of tower cap.
Its principle of work is as follows: when tower crane hangs loads, due to the effect of load, the main chord of tower cap produces compressive deformation, load is larger, be out of shape larger, at this moment also distortion thereupon of the arc steel plate on limiter of moment, and the distortion of chord member is amplified, makes to bend adjusting bolt on plate and the distance of limit switch and dwindles gradually with the increase of load.In the time that load reaches rated load, touch limit switch by adjusting adjusting bolt, thereby cut off the power supply of lifting mechanism and luffing mechanism, reach the object of the lift heavy torque load of restriction tower crane.But tower crane is in the time of normal work, sometimes can or self lift weight because of external wind periodically rocks tower body, make limiter of moment frequent moment micro-switch that triggers in the time of critical conditions, cause that tower crane control circuit output start stop signal is by motor frequent movement.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Novel tower machine power square restrictor signal output stabilizer, described device has overcome because tower machine periodically rocks the bow plate limiter of moment that causes frequent actuation force square micro-switch when the critical conditions, has improved the stability of limiter of moment output signal.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of Novel tower machine power square restrictor signal output stabilizer, it is characterized in that: the input termination 220V alternating current of described installation's power source, the mouth of power supply is divided into two-way, the first via is through the coil connecting to neutral line of limiter of moment moment micro-switch K1 and the KT1 of slug relay, the second tunnel is divided into two-way after scram button SA1, wherein Yi road is through the contact of the KT1 of slug relay, connecting to neutral line after the coil of motor forward button SB1 and the positive contactor KM1 of motor, another road is connecting to neutral line after the coil of motor reversal button SB2 and motor reversal contactless switch KM2, the power input first via of threephase asynchronous machine M meets threephase asynchronous machine M through the contact of the positive contactor KM1 of motor, and the second tunnel meets threephase asynchronous machine M through the contact of motor reversal contactless switch KM2.
Preferably, the input termination 220V alternating current of described installation's power source, the mouth of power supply is divided into two-way, the first via is successively through the coil connecting to neutral line of limiter of moment moment micro-switch K1 and the KT1 of slug relay, the second tunnel is divided into two-way after scram button SA1, wherein Yi road connecting to neutral line after the coil of contact, motor forward button SB1 and the positive contactor KM1 of motor of the KT1 of slug relay successively, another road is connecting to neutral line after the coil of motor reversal button SB2 and motor reversal contactless switch KM2 successively.
The beneficial effect that adopts technique scheme to produce is: in the limiter of moment of critical conditions, its moment micro-switch contact can periodically be connected and disconnect because tower body rocks.The utility model is by a slug relay, after moment micro-switch is disconnected, within the time of setting, power-off delay relay still can ensure to export a balancing torque signal, the tower crane decline that now can only luffing retreats or hoist, the delay time of this setting need to be greater than the slosh cycle of tower crane.The utility model can be avoided rocking because of tower body the impact that limiter of moment is brought completely, ensure the stability of torque signals output, can significantly increase the safety of tower crane operation, can under moment critical conditions, not allow motor frequent movement, improve the stability of limiter of moment output signal.Even if this scheme slug relay fault, also can ensure to surpass normally moment restriction function, can ensure the safety that tower machine uses completely.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1-2 is electrical schematic diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1-2, a kind of Novel tower machine power square restrictor signal output stabilizer, the input termination 220V alternating current of described installation's power source, the mouth of power supply is divided into two-way, the first via is successively through the coil connecting to neutral line of limiter of moment moment micro-switch K1 and the KT1 of slug relay, the second tunnel is divided into two-way after scram button SA1, wherein Yi road is successively through the contact of the KT1 of slug relay, connecting to neutral line after the coil of motor forward button SB1 and the positive contactor KM1 of motor, another road is connecting to neutral line after the coil of motor reversal button SB2 and motor reversal contactless switch KM2 successively.The power input first via of threephase asynchronous machine M meets threephase asynchronous machine M through the contact of the positive contactor KM1 of motor, and the second tunnel meets threephase asynchronous machine M through the contact of motor reversal contactless switch KM2.
K1 is the moment micro-switch being touched, and in the time that limiter of moment reaches the moment values that K1 sets, K1 is opened by normally closed often turning, and the coil of the KT1 of slug relay obtains electric, and KT1 normally closed contact disconnects immediately, makes the motor can only be to the direction rotation that reduces tower crane moment.Now tower crane carrying weight, when end position (just triggering the place of K1 moment micro-switch), can shake under the External Force Actings such as wind-engaging, K1 electric shock meeting conducting or disconnection frequently while shaking.By suitable delay time is set, the time delay break function of KT1 can ensure that KT1 normally closed contact disconnects all the time in the delay time of setting, even if now press forward button SB1, motor also can forward not increase the moment that tower crane bears.According to field observation, the cycle that general tower machine shakes because of external force, in 3 seconds, is all can reach the object of stablizing output torque signal in 3 seconds therefore generally set the KT1 of slug relay time delay turnoff time.
Applied specific case herein principle of the present utility model and embodiment thereof are set forth, the explanation of above embodiment is just with helping understand method of the present utility model and core concept thereof.It should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not depart from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (2)
1. a Novel tower machine power square restrictor signal output stabilizer, it is characterized in that: the input termination 220V alternating current of described installation's power source, the mouth of power supply is divided into two-way, the first via is through the coil connecting to neutral line of limiter of moment moment micro-switch K1 and the KT1 of slug relay, the second tunnel is divided into two-way after scram button SA1, wherein Yi road connecting to neutral line after the coil of contact, motor forward button SB1 and the positive contactor KM1 of motor of the KT1 of slug relay, another road is connecting to neutral line after the coil of motor reversal button SB2 and motor reversal contactless switch KM2; The power input first via of threephase asynchronous machine M meets threephase asynchronous machine M through the contact of the positive contactor KM1 of motor, and the second tunnel meets threephase asynchronous machine M through the contact of motor reversal contactless switch KM2.
2. Novel tower machine power square restrictor signal output stabilizer according to claim 1, it is characterized in that: the input termination 220V alternating current of described installation's power source, the mouth of power supply is divided into two-way, the first via is successively through the coil connecting to neutral line of limiter of moment moment micro-switch K1 and the KT1 of slug relay, the second tunnel is divided into two-way after scram button SA1, wherein Yi road is successively through the contact of the KT1 of slug relay, connecting to neutral line after the coil of motor forward button SB1 and the positive contactor KM1 of motor, another road is connecting to neutral line after the coil of motor reversal button SB2 and motor reversal contactless switch KM2 successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018676.9U CN203682951U (en) | 2014-01-13 | 2014-01-13 | Novel signal output stabilizing device for moment limiter of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018676.9U CN203682951U (en) | 2014-01-13 | 2014-01-13 | Novel signal output stabilizing device for moment limiter of tower crane |
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| Publication Number | Publication Date |
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| CN203682951U true CN203682951U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420018676.9U Expired - Lifetime CN203682951U (en) | 2014-01-13 | 2014-01-13 | Novel signal output stabilizing device for moment limiter of tower crane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104899444A (en) * | 2015-06-04 | 2015-09-09 | 三峡大学 | Determination method for structural parameter of moment limiter of bent board matched with tower crane |
| CN106882706A (en) * | 2017-02-28 | 2017-06-23 | 长治清华机械厂 | Tower crane control protection system |
-
2014
- 2014-01-13 CN CN201420018676.9U patent/CN203682951U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104899444A (en) * | 2015-06-04 | 2015-09-09 | 三峡大学 | Determination method for structural parameter of moment limiter of bent board matched with tower crane |
| CN104899444B (en) * | 2015-06-04 | 2017-06-30 | 三峡大学 | A kind of bow plate limiter of moment structural parameter determining method matched with tower crane |
| CN106882706A (en) * | 2017-02-28 | 2017-06-23 | 长治清华机械厂 | Tower crane control protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YATAI HEAVY INDUSTRY CO., LTD. Free format text: FORMER NAME: XINGTAI YATAI HEAVY INDUSTRIAL MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 055150 Xingtai city of Hebei province Renxian County River Industrial Zone Patentee after: YATAI HEAVY INDUSTRY Inc.,Ltd. Address before: 055150 Xingtai city of Hebei province Renxian County Yatai Hetou Industrial Zone, Heavy Machinery Co. Patentee before: XINGTAI YATAI HEAVY INDUSTRY MACHINERY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |