CN204569265U - The safe jacking system of a kind of winch - Google Patents
The safe jacking system of a kind of winch Download PDFInfo
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- CN204569265U CN204569265U CN201520281707.4U CN201520281707U CN204569265U CN 204569265 U CN204569265 U CN 204569265U CN 201520281707 U CN201520281707 U CN 201520281707U CN 204569265 U CN204569265 U CN 204569265U
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- winch
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Abstract
The utility model provides a kind of winch safe jacking system, comprise the electric power board that simultaneously connects source of AC and backup power and be arranged on power loss control apparatus on winch respectively, test the speed sensing device and elevation carrection sensing device; Described electric power board is connected with power loss control apparatus; Described power loss control apparatus comprises central processing unit; The described electric signal testing the speed sensing device and elevation carrection sensing device feedback is transferred to brake actuators by central processing unit, is controlled the brake weight of electromagnetic brake on winch by brake actuators.The utility model is the slowing-down brake system of an adjustable speed, and utilize intelligent distance-measuring speed measuring equipment governing speed, make winch, with deceleration regime, object is discharged into ground, use dual power supply, can be immediately battery-powered when platform exchanges and lost efficacy, system still can ensure that winch declines safely, can ensure that human life's safety and equipment property safety in emergency situations.
Description
Technical field
The utility model belongs to rolling control technical field, especially relates to the safe jacking system of a kind of winch.
Background technology
At present, the hoist system used at the production field such as building, boats and ships, drilling platform of China has the requirement much needing carrying personnel, although these hoist systems have oneself self-locking or slowing-down brake system, but due to the awareness of safety of operating personal and operant level uneven, there will be maloperation phenomenon, or machine is out of control owing to maintaining the improper safety system that causes, can cause human life and equipment property great risk.Existing hoist system, there is the situation that can not reach under specific condition and ensure personal security in its safety shut-down system and self-locking system, the hoist system controlled by variable-frequency motor, when equipment runs out of steam electricity, motor can not control the motion of the weight that winch hangs, when there is no electric losing self-locking, weight can fall, cause safety misadventure, on the equipment having electric losing self-locking, weight can be parked in the air, if having personnel in suspension, personnel can not timely environment out of danger, thus causes serious consequence.
Utility model content
Problem to be solved in the utility model is to provide the safe jacking system of a kind of winch, the electricity that runs out of steam is there is at hoist system, or when personnel's maloperation, equipment can be discharged into ground the weight on winch or personnel with the speed of safety automatically, avoids the unnecessary loss of personnel and equipment.
For solving the problems of the technologies described above, the technical solution of the utility model is achieved in that
The safe jacking system of a kind of winch, comprise the electric power board that simultaneously connects source of AC and backup power and be arranged on power loss control apparatus on winch respectively, test the speed sensing device and elevation carrection sensing device; Described electric power board is connected with power loss control apparatus; Described power loss control apparatus comprises central processing unit; The described electric signal testing the speed sensing device and elevation carrection sensing device feedback is transferred to brake actuators by central processing unit, is controlled the brake weight of electromagnetic brake on winch by brake actuators.
Further, described power loss control apparatus also comprises wireless energy control units and guidance panel.
Further, the sensing device that tests the speed described in comprises some cam and some tachogens corresponding respectively with the cam that respectively tests the speed of testing the speed; The described cam that tests the speed is arranged on the higher axle of the input shaft of winch, transmission shaft or output shaft three medium speed; Each described tachogen is all connected with described central processing unit.
Further, winch maximum falling speed value and distance ground minimum height values is pre-stored with in described central processing unit; Processing signals is exported to brake actuators after being compared with corresponding pre-stored value respectively by the numerical value that described test the speed sensing device and elevation carrection sensing device record by described central processing unit.
Further, described winch is also provided with ultrasonic ranging speed measuring device; Described ultrasonic ranging speed measuring device is connected with described central processing unit.
Further, described elevation carrection sensing device comprises several laser distance sensors, and each laser distance sensor is connected with described central processing unit respectively.
Further, described electromagnetic brake comprises fixed part and rotation section; Described fixed part is installed on the rigid body of winch shell or winch outside; Described rotation section is arranged on the higher axle of the input shaft of winch, transmission shaft or output shaft three medium speed.
Further, described central processing unit comprises STM32 micro controller system.
Further, described brake actuators comprises PDM keyer.
The advantage that the utility model has and good effect are:
1) there is at hoist system the electricity that runs out of steam, or when personnel's maloperation, powered by backup power, power loss control apparatus controls brake actuators and carries out brake, the weight on winch or personnel can be discharged into ground with the speed of safety.
2) multiple laser distance sensor and tachogen are set, can ensure if some sensors go wrong, also can not introduction system out of control.
3) power loss control apparatus can pass through wireless controller remote operation, convenient and reliable.
4) native system uses dual power supply, can be immediately battery-powered when platform exchanges and lost efficacy, and guarantee system still can ensure that winch declines safely in emergency situations.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of sensing device on elevator that test the speed in the utility model;
Fig. 2 be in Fig. 1 by A to test the speed cam and the tachogen structural arrangement schematic diagram of looking;
Fig. 3 is system schematic of the present utility model;
Fig. 4 is control flow chart of the present utility model;
Fig. 5 is pulse length modulation principle schematic diagram in the utility model.
In figure: 1-tests the speed cam; 2-power loss control apparatus; 3-winch shell or the outside rigid body of winch; 4-tachogen.
Detailed description of the invention
It should be noted that, in not afoul situation, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
According to the safe jacking system of a kind of winch shown in Fig. 1 to Fig. 5, comprise the electric power board that simultaneously connects source of AC and backup power and be arranged on power loss control apparatus 2 on winch respectively, test the speed sensing device and elevation carrection sensing device; Described electric power board is connected with power loss control apparatus 2; Described power loss control apparatus comprises central processing unit; The described electric signal testing the speed sensing device and elevation carrection sensing device feedback is transferred to brake actuators by central processing unit, is controlled the brake weight of electromagnetic brake on winch by brake actuators.
It should be noted that, motor speed can be converted to winch descending speed and dropping distance by tachogen.Because winch has higher reduction ratio, so descending speed and dropping distance have high precision.Concrete principle is as follows:
The transmitting ratio of winch equals winch dropping distance and measures the ratio of axle girth, so,
The rotation girth of dropping distance X transmitting ratio=measurement axle,
Rotation girth/π the d=measuring axle measures axle rotating cycle (wherein d is for measuring shaft diameter).
Wherein, described power loss control apparatus 2 also comprises wireless energy control units and guidance panel.By the wireless receiving module in wireless energy control units, accept long-range manipulation, like this, make native system be more convenient for control, especially run into emergency situations, reliability and safety higher.
In addition, attended operation panel on power loss control apparatus 2, can the input of more convenient parameter and display, makes power loss control apparatus 2 convenient operation, and can visual display system state.
Wherein, the sensing device that tests the speed described in comprises some cam 1 and some tachogens 4 corresponding respectively with the cam 1 that respectively tests the speed of testing the speed; The described cam 1 that tests the speed is arranged on the higher axle of the input shaft of winch, transmission shaft or output shaft three medium speed; Each described tachogen is all connected with described central processing unit.
It should be noted that, in order to ensure the security and stability of system, test the speed cam 1 and tachogen 4 respectively on different axles respectively can install two or more, and is preferably mounted at the higher axle of rotating speed, to guarantee conformability and the accuracy of tachogen computing.
Wherein, winch maximum falling speed value and distance ground minimum height values is pre-stored with in described central processing unit; Processing signals is exported to brake actuators after being compared with corresponding pre-stored value respectively by the numerical value that described test the speed sensing device and elevation carrection sensing device record by described central processing unit.
It is to be noted, in winch device external, the multiple high detecting device that tests the speed can also be installed, such as, comprise several laser distance sensors at described elevation carrection sensing device, and each laser distance sensor is connected with described central processing unit respectively.
Also passable, described winch is also provided with ultrasonic ranging speed measuring device, and this ultrasonic ranging speed measuring device is connected with described central processing unit.
Like this, multiple test the speed high detecting device all by data feedback to central processing unit, even if when some sensor experiences failure, also can not introduction system out of control, system stability is good.
Wherein, described electromagnetic brake comprises fixed part and rotation section; Described fixed part is installed on the rigid body 3 of winch shell or winch outside; Described rotation section is arranged on the higher axle of the input shaft of winch, transmission shaft or output shaft three medium speed.The installation of fixed part and rotation section can be selected flexibly according to concrete operating mode, and electromagnetic brake device and installation thereof with reference to existing techniques in realizing, can repeat no more here.
Wherein, described central processing unit comprises STM32 micro controller system, can carry out hundred descending speeds each second and control, good stability.
Native system provides decline safety protection function for winch.Overrun, cross nearly protection apart from ground.Can by the maximum falling speed of control panel initialization system and maximum deceleration accekeration.
Concrete, the descending speed that feed back till now of central processing unit according to tachogen, if exceed the maximum falling speed of setting, namely controls electromagnetic brake action, speed is limited in maximum falling speed.According to maximum falling speed Vmax (maximum falling speed here requires to set with customer requirement according to distinct device) and maximum deceleration acceleration/accel amax, (maximum deceleration acceleration/accel is according to the security setting of winch carrier, such as, if carrier has personnel, its peak acceleration must not exceed human body tolerance range, i.e. 3 times of acceleration due to gravitys), central processing unit can calculate minimum braking distance.Namely slow down when being this minimum braking distance apart from ground can realize grease it in full load.Concrete,
Minimum braking distance formula is: minimum braking distance=V
max 2/ 2a
max.
Wherein, described brake actuators comprises PDM keyer, the data that its change of voltage is fed back according to tachogenerator regulate and control, allow axle keep a constant rotating speed, can avoid like this because the change of outside air temperature humidity or the problem of the rubbed thermogenetic brake speed instability of brake facing.
The safe jacking system of this winch adopts pulse-width adjustment (PWM) technical controlling electromagnetic brake, and brake weight can adjust size according to system requirements.Concrete, be that drive current input is modulated to broad-adjustable square wave, as shown in Figure 4, electromagnetic brake is intermittent use under driven under square wave current, has electric current and currentless ratio then to determine the strength of electromagnetic brake in square wave,
That is, brake weight=maximum brake weight X (having current time/square-wave cycle).
The concrete working process of the safe jacking system of this winch is:
After power initiation, whether electric power board starts to detect source of AC normal, if AC-powered normally, enters normal working; If alternating current does not have supply regular power, then automatically switch to emergency battery and power, then enter normal working (namely entering descent mode, owing to not having electrical source of power under this state, so winch can not carry out enhancing action).
After entering mode of operation, manually or electric operating lifting (wherein, M/C lifting can be used at ordinary times to the maintenance of equipment), winch enters brake release position, and winch normally works.
In winch course of normal operation, tachogen detects winch rising or falling speed, if its descending speed exceedes the maximum falling speed V of setting
maxtime, brake actuators controls electromagnetic brake and carries out brake deceleration, makes its descending speed control within the scope of safety speed; Laser distance sensor detects ground height simultaneously, if when reaching the distance ground minimum height values of setting close to ground, brake actuators controls electromagnetic brake and carries out brake, makes it to stop declining.
If in winch course of normal operation, power electric is stopped power supply suddenly, electric power board provides power supply by emergency battery, at this moment winch is when unpowered electricity, hoisting system can be locked by electromagnetic brake, now can not promote, be in the state that preparation declines.
After artificial selection declines, winch enters decline state, and the tachogen at this moment installed detects the speed that winch declines, and laser distance sensor detects the distance on its distance ground simultaneously.
When descending speed reaches the winch maximum falling speed value of setting, system utilizes PDM keyer to regulate the pulsewidth being supplied to the drive current of electromagnetic brake, regulates the brake weight of electromagnetic brake, thus carries out the deceleration of winch; When close earthward, when reaching the distance ground minimum height values of setting, laser distance sensor feedback electric signal is to central processing unit, at this moment central processing unit exports control signal, electromagnetic brake full-load operation is controlled by PDM keyer, winch slows down, and makes personnel or weight be able to safe landing.
The brake system that existing electromagnetic brake control system can only play locking braking is transformed into the slowing-down brake system of adjustable speed by the utility model, and utilize intelligent distance-measuring speed measuring equipment governing speed, make winch, with deceleration regime, object is discharged into ground, ensure that human life's safety and equipment property safety.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.
Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (9)
1. the safe jacking system of winch, is characterized in that: comprise the electric power board that simultaneously connects source of AC and backup power and be arranged on power loss control apparatus on winch respectively, test the speed sensing device and elevation carrection sensing device; Described electric power board is connected with power loss control apparatus; Described power loss control apparatus comprises central processing unit; The described electric signal testing the speed sensing device and elevation carrection sensing device feedback is transferred to brake actuators by central processing unit, is controlled the brake weight of electromagnetic brake on winch by brake actuators.
2. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described power loss control apparatus also comprises wireless energy control units and guidance panel.
3. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described in the sensing device that tests the speed comprise some cam and some tachogens respectively corresponding with the cam that respectively tests the speed of testing the speed; The described cam that tests the speed is arranged on the higher axle of the input shaft of winch, transmission shaft or output shaft three medium speed; Each described tachogen is all connected with described central processing unit.
4. the safe jacking system of a kind of winch according to claim 1, is characterized in that: be pre-stored with winch maximum falling speed value and distance ground minimum height values in described central processing unit; Processing signals is exported to brake actuators after being compared with corresponding pre-stored value respectively by the numerical value that described test the speed sensing device and elevation carrection sensing device record by described central processing unit.
5. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described winch is also provided with ultrasonic ranging speed measuring device; Described ultrasonic ranging speed measuring device is connected with described central processing unit.
6. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described elevation carrection sensing device comprises several laser distance sensors, and each laser distance sensor is connected with described central processing unit respectively.
7. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described electromagnetic brake comprises fixed part and rotation section; Described fixed part is installed on the rigid body of winch shell or winch outside; On the axle that the input shaft of what described rotation section was corresponding with fixed part be arranged on winch, transmission shaft or output shaft three medium speed are higher.
8. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described central processing unit comprises STM32 micro controller system.
9. the safe jacking system of a kind of winch according to claim 1, is characterized in that: described brake actuators comprises PDM keyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281707.4U CN204569265U (en) | 2015-05-05 | 2015-05-05 | The safe jacking system of a kind of winch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281707.4U CN204569265U (en) | 2015-05-05 | 2015-05-05 | The safe jacking system of a kind of winch |
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| Publication Number | Publication Date |
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| CN204569265U true CN204569265U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520281707.4U Expired - Fee Related CN204569265U (en) | 2015-05-05 | 2015-05-05 | The safe jacking system of a kind of winch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2695311A1 (en) * | 2017-06-28 | 2019-01-03 | Garrido Oscar Campos | Reel with electronic brake (Machine-translation by Google Translate, not legally binding) |
| CN111891257A (en) * | 2020-08-19 | 2020-11-06 | 中南林业科技大学 | Material collecting equipment and method suitable for bamboo forest intermediate cutting |
-
2015
- 2015-05-05 CN CN201520281707.4U patent/CN204569265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2695311A1 (en) * | 2017-06-28 | 2019-01-03 | Garrido Oscar Campos | Reel with electronic brake (Machine-translation by Google Translate, not legally binding) |
| CN111891257A (en) * | 2020-08-19 | 2020-11-06 | 中南林业科技大学 | Material collecting equipment and method suitable for bamboo forest intermediate cutting |
| CN111891257B (en) * | 2020-08-19 | 2021-06-04 | 中南林业科技大学 | Material collecting equipment and method suitable for bamboo forest intermediate cutting |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20180505 |