CN2325369Y - Composition safety protective means for crane - Google Patents
Composition safety protective means for crane Download PDFInfo
- Publication number
- CN2325369Y CN2325369Y CN 98220898 CN98220898U CN2325369Y CN 2325369 Y CN2325369 Y CN 2325369Y CN 98220898 CN98220898 CN 98220898 CN 98220898 U CN98220898 U CN 98220898U CN 2325369 Y CN2325369 Y CN 2325369Y
- Authority
- CN
- China
- Prior art keywords
- protector
- switch
- hoisting crane
- housed
- steel wire
- 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 discloses a composite safety protector for cranes. A display is arranged in a control chamber of a crane, a protector with a control switch is arranged on a derricking mechanism on a cross beam of the crane, a weight sensor is arranged on a force sharing crown block of the crane and is movably connected with the protector through a regulating steel wire, and the protector is electrically connected with the weight sensor and the display through the control switch. The utility model has the advantages of high technology precision, low cost, convenient debugging and electromechanical integration, the appliance switch is controlled by mechanical drive to exactly control the lifting weight, force moment and work magnitude, the casualty accidents of machinery and staffs are prevented from happening, the safe running of the utility model is ensured, and the utility model is the ideal safety protective device for cranes.
Description
The utility model relates to the fender guard of elevator machinery, more particularly is the spacing hoisting crane combined type protector of super moment, weight, amplitude that is used for all kinds of elevator machineries.
Common existing crane safety fender guard has two kinds of electronic type and simple mechanical formulas, the easy break-down of electronic type wherein, and service life is short, and simple mechanical formula technology acuracy is poor, and accuracy is low, efficient is also low, does not therefore satisfy the safe operation requirement of hoisting crane.
The purpose of this utility model is to provide a kind of can eliminate above-mentioned shortcoming; have reasonable in design, technology acuracy is high, long service life, cost is lower, debugging is convenient; the dynamo-electric hoisting crane combined type protector that is combined as a whole of collection; especially adopt mechanical drive control apparatus switch; accurately control the operating range of lifting weight, hoisting moment and the work range of hoisting crane; can avoid machinery, manpower casualty accident take place, guarantee the safe operation of equipment.
Hoisting crane combined type protector is that formations such as protector, weight sensor, controller, telltale are arranged; it is that control cabin at hoisting crane is equipped with telltale; the protector of tape controller is housed on the luffing mechanism of hoisting crane crossbeam; on the stressed fixed pulley of hoisting crane, weight sensor is housed; flexibly connect through adjusting steel wire and protector, protector is electrically connected with weight sensor, telltale by controller.Wherein protector is that formations such as transmission gear, worm screw, worm gear, interior outer card plate, connecting panel, shake-up arm-tie are housed in casing, and controller or switch have formations such as the amplitude modulation switch that is distributed on worm gear, outer card plate, the shake-up arm-tie, weight switch, breakdown switch.It is to drive transmission gear successively by luffing mechanism; worm screw; worm gear is connected with a joggle; amplitude modulation switch on worm gear is by push pedal of connecting panel buck switch and outer card plate interlock; one end of outer card plate and interior clamp flexibly connects; and be fixed on the protector housing; weight switch is equipped with at the top of outer card plate; the switch push pedal is equipped with on the top of interior clamp; the lower end is close to the shake-up arm-tie; touching arm-tie is connected with the breakdown switch shake-up; adjusting fixation with steel wire is connected with weight sensor on the shake-up arm-tie; also be exactly to adjust fixation with steel wire with the weight sensor bonded assembly touching on the arm-tie, touching an end that is connected with the adjustment spring on the arm-tie.Described weight sensor is that clamping plate are arranged; fixed mount; adjustable; force rod; spring; fixing end block; formations such as bolt; it is the end that clamping plate are housed on the stressed fixed pulley of hoisting crane; be convenient in time transmit the gravity information that is subjected to; the other end is captiveed joint with the tension bar that is with spring; the fixed mount of adjusting steel wire also is housed on clamping plate; being used for clamping adjusts the steel wire end; end block is housed being with on the tension bar of spring; fixedly adorning on the end block and be installed with adjustable that adjusts steel wire; adjusting steel wire one end is fixed on the fixed mount; pass adjustable; the other end is connected with protector; change pulling by adjustable and touch arm-tie and go to control the weight switch break-make, control thereby the gravity situation of hoisting crane is passed to protector.
Description of drawings:
Fig. 1: hoisting crane combined type protector mounting structure scheme drawing
Fig. 2: hoisting crane combined type protector protector structure scheme drawing
Fig. 3: hoisting crane combined type protector weight sensor structural representation
Fig. 4: hoisting crane combined type protector controller circuitry figure
Fig. 5: hoisting crane combined type protector display circuit 1-hoisting crane, the telltale of 2-control cabin, the stressed fixed pulley of 3-; 4-retransmits sensor, 5-protector, 6-luffing mechanism; 7-adjusts steel wire, 8-transmission gear, 9-worm screw; the 10-worm gear, 11-connecting panel, 12; in the 13-; outer card plate; 14-touches arm-tie, and 15-adjusts spring, 16-controller (switch); 16-1 amplitude modulation switch, 16-2 weight switch, 16-3 breakdown switch; the 17-clamping plate, the 18-fixed mount, 19-is adjustable; 20-is end block fixedly, 21-tension bar, 22-spring; the 23-bolt, the push pedal of 24-switch, TA-switch; the J-relay, R-resistance, DF-display lamp
Further specify structure of the present utility model and working process in conjunction with the accompanying drawings: as shown in the figure, when lifting, clamp 12 moved to outer card plate 13 places in weight sensor spring 22 stressed pullings shake-up arm-ties 14 went to promote, when reaching rated load weight, in, outer card plate 12,13 overlap, the contact switch K3 that switch push pedal 24 on the interior clamp 12 contacts on the outer card plate 13 makes contactless switch J3 closed amputation lifting power supply, contactless switch J1 connects with becoming significantly owing to the lifting power supply simultaneously, contact power supply significantly so also cut off to become, hoisting crane can only be done descending motion to secure side to promptly like this.
When the adjustment steel wire 7 that connects weight sensor and protector was crossed pine or broken, touching arm-tie 14 will be under the pulling force of adjusting spring 15 and fault display switch C4 closure, and J3 is also closed, cut off the lifting power supply, and the DF4 fault shows.
Become process significantly: with switch by a small margin, be that two switches stack significantly, its contact one in front and one in back, when switch push pedal 24 touches significantly early warning K switch 1 earlier, the K1 closure, signal gives the alarm, if amplitude continues to increase, this switch push pedal 24 will promote amplitude peak K switch 1, K switch 1 closure, relay J 1, the J1 normally closed contact is opened, become significantly contactless switch dead electricity, at this moment, hoisting crane can only move in the opposite direction.
The amplitude that diminishes process: when plate 11 is made clickwise with worm gear 10 in succession, drive switch push pedal 24, touch K2, slightly early warning K switch 2 closures are sent sound and light alarm.If amplitude continues to diminish, then switch push pedal 24 promotion minimum radius master cock K2 close, and relay J 2 gets electric, and the normally closed point of J2 often becomes to be opened, the amplitude that diminishes contact dead electricity, and at this moment, hoisting crane can only be to direction motion significantly.
Hoisting crane combined type protector of the present utility model is to utilize transmission gear, worm gear, worm screw to shorten the characteristic curve of hoisting crane; it is become with the sinusoidal function line by original straight line, curve matches; realized utilizing the location of a certain positioning instant connecting panel of worm gear cylindrical; make hoisting crane by varies with sinusoidal function; the distance that changes master cock and push pedal is controlled maximum lifting weight, work range and hoisting moment; thereby generation equipment and human casualty accident in having avoided using; guaranteeing safe operation, is desirable crane safety fender guard.
Claims (3)
1; a kind of hoisting crane combined type protector; it is characterized in that telltale being housed at the control cabin of hoisting crane; the protector of tape controller is housed on the luffing mechanism of hoisting crane crossbeam; on the stressed fixed pulley of hoisting crane, weight sensor is housed; flexibly connect through adjusting steel wire and protector, protector is electrically connected with weight sensor, telltale by controller.
2; hoisting crane combined type protector as claimed in claim 1; it is characterized in that described protector is to drive transmission gear on luffing mechanism successively; worm screw; worm gear is connected with a joggle; controller; be to be distributed in worm gear; outer card plate; touch the amplitude modulation switch on the arm-tie; weight switch; breakdown switch constitutes; amplitude modulation switch on worm gear by connecting panel through switch push pedal and outer card plate interlock; one end of outer card plate and interior clamp flexibly connects; weight switch is equipped with at the top of outer card plate; interior clamp is close to the shake-up arm-tie; touching arm-tie is connected with the breakdown switch shake-up; adjust fixation with steel wire with the weight sensor bonded assembly and touching on the arm-tie, touching an end that is connected with the adjustment spring on the arm-tie.
3, hoisting crane combined type protector as claimed in claim 1; it is characterized in that described weight sensor is on the stressed fixed pulley of hoisting crane clamping plate to be housed; captive joint with the tension bar that is with spring; the fixed mount of adjusting steel wire also is housed on clamping plate; fixedly end block is housed being with on the tension bar of spring; fixedly adorning on the end block and be installed with adjustable that adjusts steel wire, adjusting steel wire and be connected with protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98220898 CN2325369Y (en) | 1998-04-27 | 1998-04-27 | Composition safety protective means for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98220898 CN2325369Y (en) | 1998-04-27 | 1998-04-27 | Composition safety protective means for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2325369Y true CN2325369Y (en) | 1999-06-23 |
Family
ID=33972579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98220898 Expired - Fee Related CN2325369Y (en) | 1998-04-27 | 1998-04-27 | Composition safety protective means for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2325369Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079078C (en) * | 1999-06-30 | 2002-02-13 | 西安建筑科技大学 | High-safety protecting system and method for monitoring running state of tower crane |
-
1998
- 1998-04-27 CN CN 98220898 patent/CN2325369Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079078C (en) * | 1999-06-30 | 2002-02-13 | 西安建筑科技大学 | High-safety protecting system and method for monitoring running state of tower 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 |