CN2496842Y - Bidirectional safety limiter for toewr crane - Google Patents
Bidirectional safety limiter for toewr crane Download PDFInfo
- Publication number
- CN2496842Y CN2496842Y CN 01224419 CN01224419U CN2496842Y CN 2496842 Y CN2496842 Y CN 2496842Y CN 01224419 CN01224419 CN 01224419 CN 01224419 U CN01224419 U CN 01224419U CN 2496842 Y CN2496842 Y CN 2496842Y
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- CN
- China
- Prior art keywords
- gear
- moment
- weight
- arm
- fan
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a tower crane doubleaction security limitator comprising a range and moment stopper mechanism and a weight stopper mechanism. The range and moment stopper mechanism is provided with a worm, a worm wheel, a gear, a sectorial gear, a sectorial moment touch arm and a travel switch. The weight stopper mechanism is provided with a slidewheel, a weight-transmit stayguy, two gears, a weight touch arm, a restoration spring and a screw for adjusting the touch arm. With no need of choosing a pathwise direction and an antidromic direction during the assembly, whether the rotation is pathwise or antidromic during the work, the utility model can limit the amplitude of variation, the moment and the weight. The work journey can be effectively controlled without any vacant point.
Description
The utility model relates to a kind of elevator machinery, relates in particular to a kind of tower crane bidirectional safe killer.
During tower crane work, cantilever force has a maximum torque that can bear when generally designing, and in use, weight of being born or amplitude (arm length) are in constantly changing, and it is overweight to run into the unforeseen circumstances appearance, or occurs the phenomenon of super amplitude in the working process.Existing safety of tower crane killer can only be installed and used in a direction, if when opposite with assigned direction, the luffing moment cooperates imbalance, the control blank spot occurs; To the control of weight, adopt direct pull, when making the tower crane forearm stressed, generation fluctuates, and the wrong control of being engaged in occurs, and when worm screw and assigned direction rotated on the contrary, weight and moment cooperated out of proportion.
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of tower crane bidirectional safe killer is provided.
Tower crane bidirectional safe killer described in the utility model has amplitude, moment limiting mechanism, weight limits mechanism, it is characterized in that described amplitude, moment limiting mechanism have worm screw, with scroll bar ingear turbine, the gear coaxial with turbine, with the quadrant gear of gear mesh, touch arm with the coaxial mounted fan-shaped moment of quadrant gear, quadrant gear and fan-shaped moment are touched arm fixing plus-minus screw and travel switch; Described weight limits mechanism has pulley, is arranged on the heavily backguy of biography in the pulley, with the gear of pulley coaxle, with the gear of gear mesh, touches arm with the weight of gear coaxial rotation, retracing spring and touch the arm plus-minus screw.
Wherein have the circular arc slotted hole on fan-shaped moment shake-up arm, described plus-minus screw is installed in the screw of quadrant gear by this hole.
Wherein on quadrant gear, be equipped with and have two fan-shaped auxiliary members and plus-minus screw.
Tower crane bidirectional safe killer described in the utility model is to adopt the gear uniform movement to finish the work, therefore, need not during installation to select along reversing sense, during work, no matter along de-rotation, all can bring into play restriction to luffing, moment, weight three, its forced stroke can both effectively be controlled, no vacancy point.The auxiliary member of quadrant gear can enlarge and shrink according to the size of amplitude, controls different amplitudes, also can come the control of cooperation amplitude size simultaneously by the position of adjusting travel switch.Fan-shaped moment is touched arm can select optimum controlling point, with the working weight symmetry in left and right sides adjusting control moment.Utilizing gear to rotate control weight, is that the direct tension with weight becomes uniform circular motion, like this, can reduce when the tower crane forearm is subjected to gravity and fluctuate, the mistake control of appearance.
Fig. 1 is the front view of tower crane bidirectional safe killer described in the utility model;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the assembly drowing of quadrant gear and two fan-shaped auxiliary members;
Fig. 4 is that the A of Fig. 3 is to part sectional view;
Fig. 5 is that tower crane bidirectional safe killer described in the utility model is installed in the intention of looking on the tower crane.
Referring to Fig. 1 and Fig. 2, tower crane bidirectional safe killer described in the utility model has amplitude, moment limiting mechanism and weight limits mechanism.Described amplitude, moment limiting mechanism have worm screw 1, and with scroll bar ingear turbine 2, the gear 3 coaxial with turbine with gear 3 ingear quadrant gears 4, touches arm 6 with the fan-shaped moment that quadrant gear 4 is coaxial, and moment is touched arm plus-minus screw 8 and travel switch 16.Described quadrant gear 4 has two fan-shaped auxiliary members 5,7; Have circular arc slotted hole 20 on fan-shaped moment shake-up arm 6, described plus-minus screw 8 is installed on the quadrant gear 4 by this hole, and loosening plus-minus screw 8 can be adjusted the mutual alignment between quadrant gear 4 and the fan-shaped moment shake-up arm 6, makes amplitude and moment symmetry.See Fig. 3 and Fig. 4, on quadrant gear 4, have two circular holes and three screws 23.Described fan-shaped auxiliary member 5,7 has a circular hole at small end, and bearing pin 24 passes this hole is connected fan-shaped auxiliary member 5,7 respectively with quadrant gear 4, and fan-shaped auxiliary member 5,7 can rotate around bearing pin 24.Big end at fan-shaped auxiliary member 5,7 has circular arc slotted hole 21, and plus-minus screw 22 passes in the screw that this hole is installed in quadrant gear 4, and loosening plus-minus screw 22 can be adjusted the mutual alignment between quadrant gear 4 and two the fan-shaped auxiliary members 5,7 respectively.Described weight limits mechanism has pulley 9, is arranged on the heavily backguy 11 of biography in the pulley 9, and this passes heavily backguy 11 around pulley groove one circle or a few.Gear 10 with pulley coaxle rotates with gear 10 gears in meshs 12, touches arm 13 with the weight of gear 12 coaxial rotation, and retracing spring 14 and weight are touched arm plus-minus screw 15.
Tower crane bidirectional safe killer described in the utility model is used for tower crane (see figure 1) control luffing, moment, weight, makes its energy trouble free service.
During installation, with worm screw 1 any end and concentric connection of amplitude-changing drum (not looking out among the figure), when work, amplitude-changing drum rotates, worm screw 1 is rotated with amplitude-changing drum, drive turbine 2 by worm screw 1 and rotate, drive quadrant gears 4 with the coaxial gear 3 of turbine 2 and fan-shaped moment is touched arm 6, when fan-shaped auxiliary member 5,7 when touching travel switch 17, the switch outage, crane is out of service, realizes luffing control.Touch arm 6 impact stroke switches 16 when fan-shaped moment and realize Torque Control.Passing heavily backguy 11 1 ends is fixed in the groove of pulley 9, enclose or a few around groove one along the groove either direction, when pulley 9 is accepted weight pulling pulley 9 by sensor senses, drive and its mating gear 12 and weight shake-up arm 13 with the gear 10 of pulley coaxle, touch the outer end of arm 13 by weight and touch travel switch 19, weight control is finished in travel switch 19 outages.
Claims (3)
1, tower crane bidirectional safe killer, have amplitude, moment limiting mechanism, weight limits mechanism is characterized in that described amplitude, moment limiting mechanism have worm screw (1), with scroll bar ingear turbine (2), the gear coaxial with turbine (3) with gear (3) ingear quadrant gear (4), touches arm (6) with the coaxial mounted fan-shaped moment of quadrant gear (4), quadrant gear (4) and fan-shaped moment are touched arm (6) fixing plus-minus screw (8) and travel switch (16,17); Described weight limits mechanism has pulley (9), be arranged on the heavily backguy of biography (11) in the pulley (9), gear (10) with pulley coaxle, with gear (10) gears in mesh (12), touch arm (13) with the weight of gear (12) coaxial rotation, retracing spring (14) and shake-up arm plus-minus screw (15).
2, tower crane bidirectional safe killer according to claim 1 is characterized in that having circular arc slotted hole (20) on fan-shaped moment shake-up arm (6), and described plus-minus screw (8) is installed in the screw (23) of quadrant gear (4) by this hole.
3, tower crane bidirectional safe killer according to claim 1 and 2 is characterized in that being equipped with on quadrant gear (4) and has two fan-shaped auxiliary members (5,7) and plus-minus screw 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01224419 CN2496842Y (en) | 2001-05-23 | 2001-05-23 | Bidirectional safety limiter for toewr crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01224419 CN2496842Y (en) | 2001-05-23 | 2001-05-23 | Bidirectional safety limiter for toewr crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2496842Y true CN2496842Y (en) | 2002-06-26 |
Family
ID=33640728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01224419 Expired - Fee Related CN2496842Y (en) | 2001-05-23 | 2001-05-23 | Bidirectional safety limiter for toewr crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2496842Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103461035A (en) * | 2013-10-11 | 2013-12-25 | 唐山职业技术学院 | Stroke control device for intelligent ventilation and temperature control machine for greenhouse |
| CN105692483A (en) * | 2016-03-21 | 2016-06-22 | 柳州三农科技有限公司 | Ascending and buffering extreme position limiter for crane |
| CN105692457A (en) * | 2016-03-21 | 2016-06-22 | 柳州三农科技有限公司 | Ascending limit position limiter for crane |
-
2001
- 2001-05-23 CN CN 01224419 patent/CN2496842Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103461035A (en) * | 2013-10-11 | 2013-12-25 | 唐山职业技术学院 | Stroke control device for intelligent ventilation and temperature control machine for greenhouse |
| CN105692483A (en) * | 2016-03-21 | 2016-06-22 | 柳州三农科技有限公司 | Ascending and buffering extreme position limiter for crane |
| CN105692457A (en) * | 2016-03-21 | 2016-06-22 | 柳州三农科技有限公司 | Ascending limit position limiter for crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |