CN202322163U - Device for controlling hoisting speed of crane - Google Patents
Device for controlling hoisting speed of crane Download PDFInfo
- Publication number
- CN202322163U CN202322163U CN2011204684505U CN201120468450U CN202322163U CN 202322163 U CN202322163 U CN 202322163U CN 2011204684505 U CN2011204684505 U CN 2011204684505U CN 201120468450 U CN201120468450 U CN 201120468450U CN 202322163 U CN202322163 U CN 202322163U
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- China
- Prior art keywords
- output shaft
- rotating speed
- liquid
- hydraulic
- control device
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a device for controlling the hoisting speed of a crane. The device is provided with a main output shaft (10) of a variable-speed transmission mechanism, a rotating speed sensor (9), a computer (15) and a hydraulic control device, wherein the rotating speed sensor is connected with the computer through a rotating speed electrical signal; the computer is connected with the hydraulic control device through a control command electrical signal; and the hydraulic control device is connected with the computer through a gear pump (16) driven by a servo motor and a drive circuit of the servo motor. Compared with the prior art, the device has the advantages that: an electro-hydraulic proportional valve is replaced by the hydraulic transitivity of the gear pump and the accurate controllability of the rotating speed of the servo motor, so that required control performance can be met as well, and investment is saved; and the requirement of controlling the quality of hydraulic oil can be reduced, and the service life can be prolonged.
Description
Technical field
The utility model relates to a kind of control setup of crane loading speed, especially a kind of control setup of hoister in large tonnage lifting speed, the hoisting crane technical field of lifting in the genus transportation.
Background technology
Hoisting crane has been requisite mechanical equipment in the modern mechanical industry, and it all is widely used at aspects such as loading, carryings.The rising of crane hook, descend be through the winch spool volume, put be have suspension hook hawser realize that the speed of its lifting is associated with winch spool rotating speed on the main output shaft, therefore, the control of lifting speed is in fact exactly to the control that turns of main output shaft.Turning by the primary input beam warp of existing main output shaft is connected realization by variable transmission mechanism with the power machine tool, and the adjusting of its rotating speed is carried out through the rotating speed of mechanical variable speed device speed change or change power machine tool.But wherein then can cause the machine tool life-span to descend with the too slow power machine tool rotating speed that changes of mechanical speed change reaction.
, adopt at variable transmission mechanism on the basis of the sticking power-transfer clutch of liquid for this reason,, both can keep machine tool and under stable rotating speed, work, can speed change is swift in response through computer controlled again through rotating speed is regulated in the adjusting of principal and subordinate's movable friction plate spacing in the sticking power-transfer clutch of liquid.Wherein the adjusting of principal and subordinate's movable friction plate spacing is through the piston that driven by hydraulic oil the adjusting that is connected the shared total elevation of friction lining on the input and output shaft to be carried out in the sticking power-transfer clutch of liquid.Because principal and subordinate's movable friction plate is connected with the main driven shaft that is respectively outer sleeve and inner spindle through the axial splines structure respectively by the rule of partition, the spacing when total elevation variation between friction lining arrives with identical spacing arrangement through the spline structure automatic compensation under the effect of transmission oil pressure.The mobile scalable that promptly is in the piston of the end even variation of distance between commutator segments that respectively rubs.In the past in the use of the sticking power-transfer clutch of liquid; The oil pressure of said driven plunger is regulated through an electro-hydraulic proportional valve; Promptly utilize the rotating speed sensor data of main output shaft to change; Issue electro-hydraulic proportional valve correspondent voltage signal via Computer Processing; Proportion electro-magnet produces corresponding action according to the voltage signal of input in the valve, makes that the operating valve spool produces displacement, port size changes and accomplishes and proportional pressure of input voltage or flow output with this, reaches the purpose that the control main output shaft requires rotating speed to reach the rotating speed of regulating the primary input axle.
The control principle of electro-hydraulic proportional valve is: in its electromagnetic system of electric signal input, just can produce and the proportional electromagnetic push of electric current, and this Thrust Control respective element and spool, the pressure that causes the spool balanced system to be set up makes system pressure and electric signal proportional.Like input electrical signal in proportion or certain change of program, then each parameter of system is also along with variation.The concrete connection is that permanent joint is connected with the piston control oil channel in outlet and the SAH of electro-hydraulic proportional valve, and liquid glues the Clutch input shaft while as moving joint in the SAH, has piston control oil channel and liquid to glue oil circuit in it.
But more and more heavier along with crane loading load, electro-hydraulic proportional valve often takes place to damage because of overload easily; In addition, electro-hydraulic proportional valve is higher to the requirements for quality of the sticking oil of liquid, is prone to cause job failure, reduction of service life because of the sticking oil pollution of liquid.
Summary of the invention
To above-mentioned deficiency, the utility model is exactly the control setup that will propose a kind of long service life, the sticking oil quality of liquid required low crane loading speed.
The control setup of the crane loading speed of the utility model; With the sticking power-transfer clutch of liquid is the transmission component in the variable transmission mechanism, has tachogen to connect the variable transmission mechanism main output shaft, also has computing machine and hydraulic control device; Wherein tachogen is made the rotating speed electric signal with computing machine and is connected; Computing machine is made the control command electric signal with hydraulic control device and is connected, and said hydraulic control device is the gear type pump by driven by servomotor, and the driving circuit of servomotor is connected with computing machine.
Compared with prior art; The utility model utilizes the hydraulic pressure transfer property of gear type pump and the accurate controllability of servomotor rotating speed to substitute electro-hydraulic proportional valve; Not only can reach the desired control performance equally; Also saved investment, and can reduce the requirements for quality of modulated pressure oil, improved service life simultaneously.
The control setup of the crane loading speed of the utility model; Said variable transmission mechanism main output shaft is the output shaft of a turbine transformer; The input shaft of turbine transformer is connected with the output shaft of the sticking power-transfer clutch of liquid; The input shaft of the sticking power-transfer clutch of liquid is connected with variable transmission mechanism primary input axle, and the installation shaft of said tachogen is through gear cluster and main output shaft bonded assembly.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model, among the figure: 1, primary input axle, 2, the input driving gear, 3, the sticking power-transfer clutch of liquid, 4, axle; 5, turbine transformer, 6, the output shaft driving gear, 7, the output shaft driven gear, 8, cabinet; 9, tachogen, 10, main output shaft, 11, the input driven gear, 12, the sticking Clutch input shaft of liquid (moving joint); 13, bearing cap shim (permanent joint), 14, the sticking clutch plunger control oil channel of liquid, 15, computing machine, 16, servomotor (gear type pump).
The specific embodiment
The embodiment that is given below in conjunction with accompanying drawing 1 does further description to the utility model.
Drive transmission device is installed in the cabinet 8, and this drive transmission device is by 1 on primary input axle, successively through input driving gear 2, input driven gear 11, the sticking power-transfer clutch 3 of liquid, turbine transformer 5, is connected to the transmission system of main output shaft 10 at last.The input shaft that is the sticking power-transfer clutch of liquid is connected with the primary input axle through a gear cluster, and the output shaft 4 of the sticking power-transfer clutch of liquid is the input shaft of turbine transformer, and the output shaft of turbine transformer is coaxial with main output shaft.One output shaft driving gear 6 is installed on the turbine transformer output shaft, is cooperated do transmission, tachogen 9 is installed on driven gear shaft with output shaft driven gear 7.The signal output part of tachogen is connected with the signal input part of computing machine 15, and the variable rate signal after the Computer Processing inserts servomotor 16 driving circuits of gear type pump.The adjusting oil pressure of gear type pump output is connected with the piston control oil channel 14 that the liquid of the moving joint of double as glues the sticking power-transfer clutch of liquid in the Clutch input shaft 12 through the permanent joint 13 of SAH.
Its principle of work is: tachogen continuously passes to computing machine with the velocity variations information of main output shaft, and computing machine is according to the timely process information of technical requirements that is provided with and control the servomotor rotating speed, and then the sticking clutch plunger of regulator solution advances oil pressure.When the main output shaft rotating speed is too fast; Computer controlled gear type pump rotating speed reduces; Be that output oil pressure reduces, piston is stepped back friction lining space of living in elevation is increased, and then friction lining pitch enlargement, the sticking clutch on-off power of liquid reduce; Be that the sticking clutch output shaft rotating speed of liquid descends, the input shaft rotating speed of turbine transformer reduces, control output shaft rotating speed reduces to reach the purpose of control main output shaft rev down; Otherwise when main output shaft carrying rotating speed was slow, computer controlled gear type pump rotating speed increased; Be that output oil pressure increases, propelling piston dwindles the shared elevation of friction lining, and the then sticking clutch on-off power increase of liquid, turbine transformer increase to be turned round; Make and just change the increasing of driving device rigidity; Under primary input axle rotating speed unmodified situation, output shaft increases turns round speedup, reaches the purpose that the control main output shaft improves rotating speed.
Claims (2)
1. the control setup of a crane loading speed; With the sticking power-transfer clutch of liquid is the transmission component in the variable transmission mechanism, has tachogen to connect the variable transmission mechanism main output shaft, also has computing machine and hydraulic control device; Wherein tachogen is made the rotating speed electric signal with computing machine and is connected; Computing machine is made the control command electric signal with hydraulic control device and is connected, and it is characterized in that said hydraulic control device is the gear type pump by driven by servomotor, and the driving circuit of servomotor is connected with computing machine.
2. the control setup of crane loading speed as claimed in claim 1; It is characterized in that said variable transmission mechanism main output shaft is the output shaft of a turbine transformer; The input shaft of turbine transformer is connected with the output shaft of the sticking power-transfer clutch of liquid; The input shaft of the sticking power-transfer clutch of liquid is connected with variable transmission mechanism primary input axle, and the installation shaft of said tachogen is through gear cluster and main output shaft bonded assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204684505U CN202322163U (en) | 2011-11-23 | 2011-11-23 | Device for controlling hoisting speed of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204684505U CN202322163U (en) | 2011-11-23 | 2011-11-23 | Device for controlling hoisting speed of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202322163U true CN202322163U (en) | 2012-07-11 |
Family
ID=46434153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204684505U Withdrawn - After Issue CN202322163U (en) | 2011-11-23 | 2011-11-23 | Device for controlling hoisting speed of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202322163U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502444A (en) * | 2011-11-23 | 2012-06-20 | 舟山海川船舶机械有限公司 | Control device for hoisting speed of crane |
| CN105523498A (en) * | 2016-02-23 | 2016-04-27 | 长沙嘉百精密机械有限公司 | Anti-stall device and crane |
-
2011
- 2011-11-23 CN CN2011204684505U patent/CN202322163U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502444A (en) * | 2011-11-23 | 2012-06-20 | 舟山海川船舶机械有限公司 | Control device for hoisting speed of crane |
| CN102502444B (en) * | 2011-11-23 | 2014-04-02 | 舟山海川船舶机械有限公司 | Control device for hoisting speed of crane |
| CN105523498A (en) * | 2016-02-23 | 2016-04-27 | 长沙嘉百精密机械有限公司 | Anti-stall device and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140402 |
|
| RGAV | Abandon patent right to avoid regrant |