CN202164072U - Winding over-speed protector of mobile crane - Google Patents
Winding over-speed protector of mobile crane Download PDFInfo
- Publication number
- CN202164072U CN202164072U CN2011202230739U CN201120223073U CN202164072U CN 202164072 U CN202164072 U CN 202164072U CN 2011202230739 U CN2011202230739 U CN 2011202230739U CN 201120223073 U CN201120223073 U CN 201120223073U CN 202164072 U CN202164072 U CN 202164072U
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- crane
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Abstract
The utility model relates to a winding over-speed protector of a mobile crane. The protector comprises a brake device and a manual brake controller. An operation driver can control the lifting speed and the lifting position of the crane or the speed and the position of an object below through the manual brake controller. The brake device comprises a brake wheel, a brake sheet and a hydraulic brake. The manual brake controller is connected with the hydraulic brake. The operation driver can operate the lifting speed of the crane through the manual brake controller. A synchronous sensing speed detection device and an automatic brake controller are arranged on the brake device. The automatic brake controller is connected with the synchronous sensing speed detection device. The automatic brake controller is connected with the brake device. The synchronous sensing speed detection device is used for detecting the operation speed of the lifting device of the crane in real time and transmitting data of the lifting speed to an automatic controller. When the lifting speed of the crane or the speed of the object below is beyond the speed allowed by the automatic controller, the automatic controller automatically brakes or decelerates the lifting device of the crane.
Description
Technical field
The utility model relates to a kind of overspeed protection device, particularly a kind of runabout crane elevator overspeed protection device.
Background technology
Elevator machinery is along with human society development of productivity, differentiation and constantly perfect, the simplest hoisting and transport equipment that is born the latter stage at the Neolithic Age in 5000～4000 years from Ante Christum increasing, the automation of hoisting capacity up till now, the increasingly high elevator machinery of intelligent degree.
Hoisting crane has got into the develop rapidly stage; At present particularly the application of runabout crane is more and more ordinary for China's hoisting crane, and the domestic producer that is engaged in the hoisting crane manufacturing does not stop sends out a novel multifunctional, degree of automation hoisting crane product high, that use on a large scale to capture more markets.Yet what all come with it is also increasingly high with maintenance to the safe handling of later-model intelligent hoisting crane; Hoisting operation Industry Personnel integrating skills is engaged in this requirement and quality is increasingly high night; Yet international crane functions is provided with similar basically; But but upward there is certain differentiation in the different hoisting crane concrete operations of different manufacturers production with maintenance; Particularly, increasingly high to the overall qualities and the technical ability of engineering operating personal to place in operation and operation international, domestic all-hydraulic type hoisting crane.
According to statistics, what the operation driver can make emergency reaction after hook is slipped in operation accounts for 10% of sum, slips accounting for more than 1% of leading to a disaster behind the hook.The mechanical breakdown of these bursts, operating personal happen occasionally to the maloperation of hoisting crane; This has seriously influenced the safe construction operation; Threaten the people's lives and property safety; Hoisting crane overspeed protection device carries out on the macromethod research basis in generation reason that flow-type crane hook hypervelocity is fallen; Utilize hydraulic pressure, the theory of machines of runabout crane work and adopt counting assembly microcontroller technology that the method for runabout crane circuit has been designed and developed a kind of fender guard that prevents that suspension hook from overrunning and falling, effectively prevented the engineering accident of falling and causing, design through the security concepts that hoisting crane is carried out multiple protective because of the suspension hook hypervelocity; The actv. protection is carried out in fault and maloperation with to burst, the generation of actv. prevention and prevention safety misadventure.
In sum: at present, we need a kind of simple in structure, and technological requirement is lower, the low device that can be suitable for the crane hoisting overspeed protection again of cost cost.Also to make things convenient for user of service's daily attention and maintenance simultaneously.
The utility model content
The utility model technical matters to be solved is that present employed hoisting crane exists and slips the shortcoming of hook etc., designs a kind of runabout crane elevator overspeed protection device again.
The utility model is realized above-mentioned purpose through following technical scheme:
There is the shortcoming of accidents such as hypervelocity, slide hook easily to existing hoisting crane; Again design a kind of runabout crane elevator overspeed protection device; Comprise brake equipment and hand brake controller, the operation driver can be through the speed and the position of hand brake controller control crane loading or below object.Described brake equipment comprises brake wheel, brake facing and hydraulic brake, and described hand brake controller is connected with hydraulic brake, and the operation driver can be through the lifting speed of hand brake controller function hoisting crane.Described brake equipment is provided with synchronous sensing speed detector and autobrake controller, and described autobrake controller connects with synchronous sensing speed detector, and described autobrake controller connects with brake equipment.The sensing speed detector detects the running velocity of the lifting appliance of hoisting crane in real time synchronously, and sends the data of lifting speed to auto mat.When the speed of crane loading or below object surpassed the speed that auto mat allowed, auto mat braked to the lifting appliance of hoisting crane automatically or slows down.
Described automatic brake arrangement controller is made up of speed calculation comparator, microcontroller, executive circuit and multipath hydraulic electromagnetic valve.Described speed calculation comparator, microcontroller, executive circuit and multipath hydraulic electromagnetic valve connect successively, and described speed calculation comparator connects with synchronous sensing speed detector.Described multipath hydraulic electromagnetic valve is communicated with hydraulic brake.Described synchronous sensing speed detector is that the enforcement running velocity with the lifting appliance of hoisting crane sends to the speed calculation comparator and carries out the data contrast and send comparing result to microcontroller; When the speed calculation comparator detects data that synchronous sensing speed detector sends over and surpasses the boundary that sets; The speed calculation comparator says the word and transmits control signal to executive circuit by it to microcontroller; Executive circuit operation multipath hydraulic electromagnetic valve is discharged the hydraulic oil in the hydraulic brake, lets hydraulic brake promotion brake facing and brake wheel closure reach final brake or deceleration purpose.
Described brake equipment quantity is two or more, and described multipath hydraulic electromagnetic valve is communicated with the hydraulic brake of each brake equipment respectively.Through a cover overspeed protection device two or two derricking gears are protected, practiced thrift equipment cost greatly.
Described synchronous sensing speed detector is arranged on the brake wheel.
Crane hoisting at normal load use medium speed generally about 110m/min; Carrying out that zero load uses is that its speed generally mostly is at the uniform velocity or evenly quickens rotation, adopts a little through on this crane hoisting, carrying out the momentary velocity that synchronous sensing speed detector carries out crane hoisting, will gather the crane hoisting front and back interior momentary velocity data of 0.1ms and send into the speed calculation comparator and compare identification; The rotating speed of different its reels of hoisting crane is not quite similar; Can in error limit, realize the speed bound according to former elevator, the data of collection will compare after will calculating, and exceed the upper limit limit of former setting speed when the data that record; System will send the fault instruction; Microcontroller will be directly sent in this appointment, carry out the instruction triggers device and trigger, and produce electric signal and be transferred to actuating unit; Be responsible for carrying out the safety control oil circuit and will under the control of electric signal, open the multipath hydraulic electromagnetic valve; Stop by force and drag, and cut off the elevator propulsion source and carry out integrated protection, reach crane hoisting overspeed protection function.
The utlity model has also have the reliability height outside simple in structure, low cost of manufacture, maintenance cost is low, frequency of maintenance the is low characteristics, antijamming capability is strong, comprehensive, perfect in shape and function, applicability are strong, little, easy to maintenance, the easy transformation of construction work amount, little, in light weight, the characteristic of low energy consumption of volume.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the utility model embodiment one circuit module structural representation;
Fig. 3 is the structural representation of the utility model embodiment two;
The specific embodiment
Embodiment one: as shown in Figure 1, the utility model comprises brake equipment 1 and hand brake controller 2, and the operation driver can be through the speed and the position of hand brake controller 2 control crane loadings or below object.Described brake equipment comprises brake wheel 11, brake facing 12 and hydraulic brake 13, and described hand brake controller 2 is connected with hydraulic brake 13, the lifting speed that the operation driver can be through hand brake controller 2 manipulating cranes, slows down and stops.Described brake equipment 1 is provided with synchronous sensing speed detector 3 and autobrake controller 4, and described autobrake controller 4 connects with synchronous sensing speed detector 1, and described autobrake controller 4 connects with brake equipment 1.
As shown in Figure 2, described automatic brake arrangement controller is made up of speed calculation comparator, microcontroller, executive circuit and multipath hydraulic electromagnetic valve.Described speed calculation comparator, microcontroller, executive circuit and multipath hydraulic electromagnetic valve connect successively, and described speed calculation comparator connects with synchronous sensing speed detector.Described multipath hydraulic electromagnetic valve 41 is communicated with hydraulic brake 13.Described synchronous sensing speed detector 3 is that the enforcement running velocity with the lifting appliance of hoisting crane sends to the speed calculation comparator and carries out the data contrast and send comparing result to microcontroller; When the speed calculation comparator detects data that synchronous sensing speed detector sends over and surpasses the boundary that sets; The speed calculation comparator says the word and transmits control signal to executive circuit by it to microcontroller; Executive circuit operation multipath hydraulic electromagnetic valve 41 is discharged the hydraulic oil in the hydraulic brake 13, lets hydraulic brake 13 promote brake facing 12 and reaches final brake or deceleration purpose with brake wheel 11 closures.
As shown in Figure 1, described synchronous sensing speed detector 3 is arranged on the brake wheel 11.
Like Fig. 1, shown in 2, sensing speed detector 3 detects the running velocity of the lifting appliance of hoisting crane in real time synchronously, and sends the data of lifting speed to auto mat.When the speed of crane loading or below object surpassed the speed that auto mat allowed, auto mat braked to the lifting appliance of hoisting crane automatically or slows down.
Embodiment two: as shown in Figure 3, the structure of present embodiment and embodiment one is basic identical, and its difference is that described brake equipment 1 quantity is two, and described multipath hydraulic electromagnetic valve 41 is communicated with the hydraulic brake 13 of each brake equipment 1 respectively.Through a cover overspeed protection device two or two derricking gears are protected, practiced thrift equipment cost greatly.
Claims (4)
1. runabout crane elevator overspeed protection device; Comprise brake equipment and hand brake controller; Described brake equipment comprises brake wheel, brake facing and hydraulic brake, and described hand brake controller is connected with hydraulic brake, it is characterized in that described brake equipment is provided with synchronous sensing speed detector and autobrake controller; Described autobrake controller connects with synchronous sensing speed detector, and described autobrake controller connects with brake equipment.
2. runabout crane elevator overspeed protection device according to claim 1 is characterized in that described automatic brake arrangement controller is made up of speed calculation comparator, microcontroller, executive circuit and multipath hydraulic electromagnetic valve; Described speed calculation comparator, microcontroller, executive circuit and multipath hydraulic electromagnetic valve connect successively, and described speed calculation comparator connects with synchronous sensing speed detector; Described multipath hydraulic electromagnetic valve is communicated with hydraulic brake.
3. runabout crane elevator overspeed protection device according to claim 2 is characterized in that described brake equipment quantity is two or more, and described multipath hydraulic electromagnetic valve is communicated with the hydraulic brake of each brake equipment respectively.
4. according to claim 1 or 2 or 3 described runabout crane elevator overspeed protection devices, it is characterized in that described synchronous sensing speed detector is arranged on the brake wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202230739U CN202164072U (en) | 2011-06-28 | 2011-06-28 | Winding over-speed protector of mobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202230739U CN202164072U (en) | 2011-06-28 | 2011-06-28 | Winding over-speed protector of mobile crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202164072U true CN202164072U (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202230739U Expired - Fee Related CN202164072U (en) | 2011-06-28 | 2011-06-28 | Winding over-speed protector of mobile crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202164072U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2949615A1 (en) * | 2014-05-27 | 2015-12-02 | Uniforest, D.o.o. | Cable winch with automatically controlled regulation of speed of unwinding of a haulage cable |
| CN106395542A (en) * | 2016-09-30 | 2017-02-15 | 新疆大学 | Friction hoist overwinding-preventing and failure alarm system based on ABS |
| CN108313915A (en) * | 2018-02-13 | 2018-07-24 | 湖南博邦重工有限公司 | A kind of elevator autobrake system |
| CN108975192A (en) * | 2018-09-28 | 2018-12-11 | 中国人民解放军火箭军工程大学 | A kind of double-brake electric hoist failure emergency load safe release system and method |
| CN111634819A (en) * | 2020-06-19 | 2020-09-08 | 河南巨人起重机集团有限公司 | Crane overspeed protection method and system |
-
2011
- 2011-06-28 CN CN2011202230739U patent/CN202164072U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2949615A1 (en) * | 2014-05-27 | 2015-12-02 | Uniforest, D.o.o. | Cable winch with automatically controlled regulation of speed of unwinding of a haulage cable |
| CN106395542A (en) * | 2016-09-30 | 2017-02-15 | 新疆大学 | Friction hoist overwinding-preventing and failure alarm system based on ABS |
| CN108313915A (en) * | 2018-02-13 | 2018-07-24 | 湖南博邦重工有限公司 | A kind of elevator autobrake system |
| CN108313915B (en) * | 2018-02-13 | 2024-03-15 | 湖南九虎智能科技有限公司 | Winch automatic braking system |
| CN108975192A (en) * | 2018-09-28 | 2018-12-11 | 中国人民解放军火箭军工程大学 | A kind of double-brake electric hoist failure emergency load safe release system and method |
| CN111634819A (en) * | 2020-06-19 | 2020-09-08 | 河南巨人起重机集团有限公司 | Crane overspeed protection method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |