CN102530749A - Novel crane luffing mechanism - Google Patents
Novel crane luffing mechanism Download PDFInfo
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- CN102530749A CN102530749A CN2012100137109A CN201210013710A CN102530749A CN 102530749 A CN102530749 A CN 102530749A CN 2012100137109 A CN2012100137109 A CN 2012100137109A CN 201210013710 A CN201210013710 A CN 201210013710A CN 102530749 A CN102530749 A CN 102530749A
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Abstract
The invention provides a novel crane luffing mechanism which plays the role of double brake protection on a roller and an arm support luffing mechanism and improves the safety of a crane. The novel crane luffing mechanism comprises a motor, a control system, high-speed shaft brakes, a reduction gearbox, a winding drum, a winding drum support and a steel wire rope wound on the winding drum, wherein the high-speed shaft brakes are arranged at the two sides of the high-speed shaft end of the reduction gearbox, at least one end of the winding drum is provided with a disc type low-speed shaft brake, and a brake disc of the disc type low-speed shaft brake is fixed with the winding drum into a whole on the end face of the winding drum. According to the invention, the disc type low-speed shaft brake is additionally arranged at the end part of the winding drum, so that the disc type low-speed shaft brake can brake the winding drum and the arm support luffing mechanism when great faults such as the failure of the high-speed shaft brakes at the high-speed shaft end of the reduction gearbox, the tooth breaking of the reduction gearbox, the shaft breaking and the like, thereby ensuring the safety of the arm support luffing mechanism and the whole machine; and the rotating speed of the winding drum can be detected in real time through the arrangement of a rotating speed detector, and the wind drum can be braked quickly, so that the safety of the equipment can be ensured.
Description
Technical field
The invention belongs to the weight-lifting equipment technical field, relate to a kind of hoisting crane accessory mechanism, be specifically related to the structural development of crane amplitude variation mechanism.
Background technology
When the goods of crane diverse location, need to adopt the pitching of steel rope Control arm shelf structure to adjust the angle of inclination of jib, realize the luffing function.The mechanism that realizes jib luffing function is called luffing mechanism; With reference to shown in Figure 1, luffing mechanism is made up of motor 1, drg 2, drop-gear box 3, reel 4, reel bearing 5 and the steel rope 6 that is wrapped on the reel 4, and luffing mechanism is by motor-driven; After drop-gear box slows down the increase moment of torsion; Reel is rotatablely moved convert into the straight-line motion of steel rope, steel rope is done luffing through assembly pulley draft arm shelf structure, realizes the luffing function of hoisting crane.Drg is to make cylinder and jib structure slow down, stop or keeping the device of functions such as halted state, is the vitals of luffing mechanism.
The luffing mechanism of hoisting crane, the especially luffing mechanism of door machine are in the both sides of drop-gear box high speed axle head two high speed shaft drgs to be installed at present, realize the braking of jib luffing mechanism, and be as shown in Figure 1.But; If during major failures such as high speed shaft brake failure or drop-gear box broken teeth, off-axis; Luffing mechanism high speed shaft drg will lose brake action to wire rope drum and jib structure, and jib structure can be because lose the traction of steel rope, occurrence of tilting under the effect of deadweight; Cause great safety misadventure, bring tremendous economic loss and personal casualty.
Summary of the invention
The present invention provides a kind of novel crane amplitude variation mechanism, can play double brake protection, the safety that has improved hoisting crane to cylinder and jib luffing mechanism.
For reaching the purpose that solves the problems of the technologies described above; The present invention adopts following technical scheme to be achieved: a kind of novel crane amplitude variation mechanism; Comprise motor, control system, high speed shaft drg, drop-gear box, reel, reel bearing and be wrapped in the steel rope on the reel; Said high speed shaft drg is installed in the both sides of said drop-gear box high speed axle head; At least one end of said reel is equipped with disc type slow-speed shaft drg, and the brake disc of said disc type slow-speed shaft drg is fixed as one at the end face and the said reel of said reel.
Further; Said disc type slow-speed shaft drg and said high speed shaft drg electric interlocking; Said luffing mechanism also comprises speed detecting unit; Said speed detecting unit comprises rotation speed detection unit and control unit; Said rotation speed detection unit transfers to said control unit with detected drum speed signal, and said control unit compares detected drum speed of said rotation speed detection unit and reel rated speed of rotation, when the detected drum speed of said rotation speed detection unit surpasses 1.1～1.2 times of reel rated speed of rotation; Said control unit sends brake command signal to the control system and the said disc type slow-speed shaft drg of said luffing mechanism, and said reel is braked.
Further, said rotation speed detection unit is to detect piece near switch and at least one, saidly is fixedly mounted on the said reel bearing near switch, and said detection piece is fixed on the end face of said reel and said reel unitary rotation.
Again further, when the number of said detection piece when being a plurality of, a plurality of detection pieces are uniformly distributed with on the end face that is fixed on said reel.
Another kind of mode as rotation speed detection unit; Said rotation speed detection unit is a rotary encoder; Said rotary encoder is fixed on the said reel bearing, its detect axle and said reel through coupler be connected the detection axle unitary rotation of said reel and described rotary encoder.
Particularly, said brake disc adopts the mode of bolted to be fixed as one at the end face and the said reel of said reel.
Compared with prior art; The present invention is through setting up disc type slow-speed shaft drg; Be installed in the end of reel; Can when major failures such as the high speed shaft brake failure of drop-gear box high speed axle head, drop-gear box broken teeth, off-axis, brake, guarantee the safety of jib structure and complete machine reel and jib luffing mechanism; Through the rotating speed that speed detecting unit can detect reel in real time is set, reel is in time braked, guarantee the safety of equipment.
Description of drawings
Fig. 1 is the structural representation of prior art crane amplitude variation mechanism;
Wherein: 1, motor; 2, drg; 3, drop-gear box; 4, reel; 5, reel bearing; 6, steel rope;
Fig. 2 is the front view of a kind of novel crane amplitude variation of embodiment of the invention mechanism;
Fig. 3 is the lateral plan of Fig. 2;
Wherein: 1, motor; 2, high speed shaft drg; 3, drop-gear box; 4, reel; 5, reel bearing; 6, steel rope; 7, disc type slow-speed shaft drg; 7-1, brake disc; 7-2, Hydraulic Station; 8, near switch; 9, detect thing.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
With reference to Fig. 2 and shown in Figure 3; A kind of novel crane amplitude variation of present embodiment mechanism; Comprise motor 1, control system, high speed shaft drg 2, drop-gear box 3, reel 4, reel bearing 5 and be wrapped in the steel rope 6 on the reel 4; In order to reduce the both sides that lock torque and scantling of structure drg are contained in the high speed axle head of drop-gear box 3, therefore be called high speed shaft drg 2.At least one end at reel 4 is equipped with disc type slow-speed shaft drg 7, and the brake disc 7-1 of disc type slow-speed shaft drg 7 adopts the mode of bolted to be fixed as one at the end face and the reel 4 of reel 4.Plate disc brake is with the end face of the discoid brake disc drg as the friction pair contact surface; Disc type slow-speed shaft drg 7 is because it is installed in the shaft end of reel 4; Directly to reel 4 brakings, the rotating shaft of reel 4 belongs to the slow-speed shaft of hoisting crane work part, so this drg is called disc type slow-speed shaft drg 7; It comprises brake disc 7-1, wheel cylinder, brake clamp, oil pipe, Hydraulic Station 7-2 etc., and brake disc 7-1 adopts the alloy steel manufacturing.Hydraulic Station 7-2 provide hydraulic power, makes brake clamp tightly clamp brake disc 7-1 from brake disc 7-1 both sides reel 4 is braked.
For realizing detecting in real time the braking of control reel 4; The electrical control of disc type slow-speed shaft drg 7 and the operation of high speed shaft drg 2 realize electric interlocking; Luffing mechanism also comprises speed detecting unit in the present embodiment; Speed detecting unit comprises rotation speed detection unit and control unit, and rotation speed detection unit is used for detecting in real time the rotating speed of reel 4, and it transfers to control unit with detected drum speed signal; Control unit compares detected drum speed of rotation speed detection unit and reel rated speed of rotation; When detected drum speed surpassed 1.1～1.2 times of reel rated speed of rotation, control unit sent brake command signal to the control system and the disc type slow-speed shaft drg 7 of luffing mechanism, and 7 pairs of reels 4 of disc type slow-speed shaft drg are braked.
Rotation speed detection unit can be multiple mode, in the present embodiment its select for use near switch 8 with detect piece 9, be fixedly mounted on the reel bearing 5 near switch 8, detect on the end face that piece 9 is fixed on reel 4 and reel 4 unitary rotation.Detecting piece 9 is the columnar metal thing, and its number can be one or more, near switch 8 select for use can respond to metal signal near switch; When detecting piece 9 with reel 4 unitary rotation; When the moving circle of revolution arrives near the position of switch 8, gather a number of turns-time signal near switch 8, and this signal is transferred to control unit; Control unit becomes drum speed with this calculated signals, and compares with the reel rated speed of rotation.
When the number that detects piece 9 when being a plurality of; A plurality of detection piece 9 rectangular distributions are fixed on the end face of reel 4, adopt a plurality of detection pieces 9 can improve the accuracy of detection of present embodiment medium speed detecting device, can be according to the precision needs; Confirm to detect the number of piece 9, as 4,6 etc.
Another kind of by way of example as rotation speed detection unit; It also can select rotary encoder for use; Rotary encoder is fixed on the reel bearing 5, and reel 4 connects with the detection axle of rotary encoder through coupler, the detection axle unitary rotation of reel 4 and rotary encoder.Rotary encoder can directly be used for measuring rotating speed and tach signal is transferred to control unit, and control unit compares this signal and reel rated speed of rotation.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (6)
1. novel crane amplitude variation mechanism; Comprise motor, control system, high speed shaft drg, drop-gear box, reel, reel bearing and be wrapped in the steel rope on the reel; Said high speed shaft drg is installed in the both sides of said drop-gear box high speed axle head; It is characterized in that: at least one end of said reel is equipped with disc type slow-speed shaft drg, and the brake disc of said disc type slow-speed shaft drg is fixed as one at the end face and the said reel of said reel.
2. a kind of novel crane amplitude variation according to claim 1 mechanism; It is characterized in that: said disc type slow-speed shaft drg and said high speed shaft drg electric interlocking; Said luffing mechanism also comprises speed detecting unit; Said speed detecting unit comprises rotation speed detection unit and control unit; Said rotation speed detection unit transfers to said control unit with detected drum speed signal, and said control unit compares detected drum speed of said rotation speed detection unit and reel rated speed of rotation, when the detected drum speed of said rotation speed detection unit surpasses 1.1～1.2 times of reel rated speed of rotation; Said control unit sends brake command signal to the control system and the said disc type slow-speed shaft drg of said luffing mechanism, and said reel is braked.
3. a kind of novel crane amplitude variation according to claim 2 mechanism; It is characterized in that: said rotation speed detection unit is for detecting piece near switch and at least one; Saidly be fixedly mounted on the said reel bearing near switch, said detection piece is fixed on the end face of said reel and said reel unitary rotation.
4. a kind of novel crane amplitude variation according to claim 3 mechanism is characterized in that: when the number of said detection piece when being a plurality of, a plurality of detection pieces are uniformly distributed with on the end face that is fixed on said reel.
5. a kind of novel crane amplitude variation according to claim 2 mechanism; It is characterized in that: said rotation speed detection unit is a rotary encoder; Said rotary encoder is fixed on the said reel bearing; Its detect axle and said reel through coupler be connected the detection axle unitary rotation of said reel and described rotary encoder.
6. according to claim 4 or 5 described a kind of novel crane amplitude variation mechanisms, it is characterized in that: said brake disc adopts the mode of bolted to be fixed as one at the end face and the said reel of said reel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100137109A CN102530749A (en) | 2012-01-17 | 2012-01-17 | Novel crane luffing mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100137109A CN102530749A (en) | 2012-01-17 | 2012-01-17 | Novel crane luffing mechanism |
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| CN102530749A true CN102530749A (en) | 2012-07-04 |
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| CN2012100137109A Pending CN102530749A (en) | 2012-01-17 | 2012-01-17 | Novel crane luffing mechanism |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867126A (en) * | 2012-09-19 | 2013-01-09 | 德瑞斯博海机械设备（大连）有限公司 | Method for optimizing calculation for working radius of luffing steel wire rope by virtue of PLC (programmable logic controller) |
| CN107032242A (en) * | 2017-06-15 | 2017-08-11 | 合肥海腾软件科技有限公司 | The emergency braking apparatus of arm tower crane jib lubbing mechanism |
| CN109231014A (en) * | 2018-09-30 | 2019-01-18 | 南京泽楚科技有限公司 | A kind of hoisting machinery axletree off-axis forecasting system and its prediction technique |
| CN112357799A (en) * | 2020-11-20 | 2021-02-12 | 中国人民解放军63921部队 | Crane lifting and winding device and method for rocket docking |
| CN113060681A (en) * | 2021-03-01 | 2021-07-02 | 中国长江电力股份有限公司 | Lifting device for large runner maintenance platform |
| CN113800412A (en) * | 2021-09-27 | 2021-12-17 | 四川建设机械（集团）股份有限公司 | Tower crane mechanism overspeed protection system and method based on PLC |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201288024Y (en) * | 2008-06-19 | 2009-08-12 | 抚顺永茂建筑机械有限公司 | Double-brake lifting mechanism of stacker crane |
| CN201411327Y (en) * | 2009-04-30 | 2010-02-24 | 大连华锐股份有限公司 | Real time monitoring device of hoisting mechanism for crane |
| CN201580908U (en) * | 2009-12-10 | 2010-09-15 | 大连华锐股份有限公司 | Overload protecting system of crane lifting transmission chain |
| CN202429929U (en) * | 2012-01-17 | 2012-09-12 | 青岛港（集团）有限公司 | Novel crane luffing mechanism |
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2012
- 2012-01-17 CN CN2012100137109A patent/CN102530749A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201288024Y (en) * | 2008-06-19 | 2009-08-12 | 抚顺永茂建筑机械有限公司 | Double-brake lifting mechanism of stacker crane |
| CN201411327Y (en) * | 2009-04-30 | 2010-02-24 | 大连华锐股份有限公司 | Real time monitoring device of hoisting mechanism for crane |
| CN201580908U (en) * | 2009-12-10 | 2010-09-15 | 大连华锐股份有限公司 | Overload protecting system of crane lifting transmission chain |
| CN202429929U (en) * | 2012-01-17 | 2012-09-12 | 青岛港（集团）有限公司 | Novel crane luffing mechanism |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867126A (en) * | 2012-09-19 | 2013-01-09 | 德瑞斯博海机械设备（大连）有限公司 | Method for optimizing calculation for working radius of luffing steel wire rope by virtue of PLC (programmable logic controller) |
| CN102867126B (en) * | 2012-09-19 | 2015-06-10 | 德瑞斯博海机械设备（大连）有限公司 | Method for optimizing calculation for working radius of luffing steel wire rope by virtue of PLC (programmable logic controller) |
| CN107032242A (en) * | 2017-06-15 | 2017-08-11 | 合肥海腾软件科技有限公司 | The emergency braking apparatus of arm tower crane jib lubbing mechanism |
| CN109231014A (en) * | 2018-09-30 | 2019-01-18 | 南京泽楚科技有限公司 | A kind of hoisting machinery axletree off-axis forecasting system and its prediction technique |
| CN112357799A (en) * | 2020-11-20 | 2021-02-12 | 中国人民解放军63921部队 | Crane lifting and winding device and method for rocket docking |
| CN112357799B (en) * | 2020-11-20 | 2023-12-15 | 中国人民解放军63921部队 | Lifting winch device and method for rocket docking crane |
| CN113060681A (en) * | 2021-03-01 | 2021-07-02 | 中国长江电力股份有限公司 | Lifting device for large runner maintenance platform |
| CN113800412A (en) * | 2021-09-27 | 2021-12-17 | 四川建设机械（集团）股份有限公司 | Tower crane mechanism overspeed protection system and method based on PLC |
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Application publication date: 20120704 |