CN205034983U - Photoelectric type hoist is prevented askew drawing and is hung safety device to one side - Google Patents
Photoelectric type hoist is prevented askew drawing and is hung safety device to one side Download PDFInfo
- Publication number
- CN205034983U CN205034983U CN201520779645.XU CN201520779645U CN205034983U CN 205034983 U CN205034983 U CN 205034983U CN 201520779645 U CN201520779645 U CN 201520779645U CN 205034983 U CN205034983 U CN 205034983U
- Authority
- CN
- China
- Prior art keywords
- slide bar
- photoelectric switch
- bar
- free end
- fixedly connected
- 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
Links
Landscapes
- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a photoelectric type hoist is prevented askew drawing and is hung safety device to one side, including the slide bar that photoelectric switch, guide bar, dead lever and level set up, the slide bar middle part is equipped with the slot hole along the length direction of slide bar, and the bottom sliding connection of guide bar is in in the slot hole, the one end of slide bar is equipped with the blanking disk of slide opening, the other end fixedly connected with level setting of slide bar, the middle part of blanking disk is equipped with the light trap, photoelectric switch is including transmitting terminal and receiving terminal, the dead lever is connected with horizontal pole and sheer pole, and the free end level that goes up the horizontal pole extends light trap center department directly over, and the free end level of sheer pole extends light trap center department under, go up the downward fixedly connected with of free end of horizontal pole photoelectric switch's transmitting terminal or receiving terminal, the free end of the sheer pole fixedly connected with that makes progress photoelectric switch's receiving terminal or transmitting terminal. Install additional on current hoist the utility model discloses, can prevent askew drawing and hang the phenomenon to one side, provide safeguard for the safe operation of hoist.
Description
Technical field
The utility model relates to hoisting crane technical field, particularly relates to hoisting crane and prevents askewly skewing the technology of hanging.
Background technology
In existing most of hoisting crane, there is the end of a geo-stationary in hoisting wirerope, and it is not mobile with the rotation of reel or pulley, is called stationary end; One end of the hoisting wirerope of so a lot of heavy-duty machine is fixedly connected on lifting mechanism, with this place's lifting mechanism geo-stationary, upwards turn back again after the other end of hoisting wirerope walks around movable pulley downwards and connect reel or connect reel afterwards by running block and fixed pulley (group).In existing small part hoisting crane, there is not fixed one end in hoisting wirerope, and the utility model does not relate to such hoisting crane.The hoisting wirerope of hoisting crane is connected with the suspender of other kinds beyond suspension hook or suspension hook.Certainly, the situation that suspension hook and other suspenders use simultaneously is also had.
Hoisting operation " ten do not hang " principle is that crane operation must observant working rule." ten do not hang " principle regulation, crane operation work must not be carried out askew skewing and be hung.But the restriction such as quality or objective condition often because of operating personnel in the lifting operation of reality, ubiquity and is askewly skewed the phenomenon of hanging.Askew skewing hangs the service life that may shorten hoisting crane or the damage causing equipment, even causes human casualty accident, there is very large potential safety hazard.
Askew skewing is hung the harm that may cause and is had:
1, askew skew to hang Crane Load can be made to increase, mechanism and motor heavy overload may be caused, reduce hoisting crane service life, even cause crane structure to damage.
2, askewly skew the wearing and tearing of hanging and can aggravate steel rope, reel and pulley, may rope guide be damaged.
3, askew skew hang steel rope may be caused to deviate from drum rope groove and on reel multiple wraps, steel rope also may be made to deviate from from pulley groove, cause derailment of cable wire accident.
4, askew skew to hang load can be made to produce conicity force, load, once depart from ground, loses ground friction force constraint, along the long-drawn-out pendulum of horizontal point of force direction, will may strike personnel or article, have an accident.
Therefore, how to prevent in hoisting operation askew skew to hang just become a very important topic.How to design and anti-ly askewly skew that to hang safety device and be arranged on hoisting crane be exactly a very real technical task.
Summary of the invention
The purpose of this utility model be to provide a kind of structure simple, be convenient to install and can be used for effectively preventing the askew photo-electric hoisting crane hung that skews of hoisting crane from preventing that askew skewing hangs safety device.
For achieving the above object, photo-electric hoisting crane of the present utility model prevents that askew skewing is hung safety device and comprised photoelectric switch, pilot bar, fixed link and horizontally disposed slide bar, pilot bar and fixed link are all welded on lifting mechanism, length direction along slide bar in the middle part of slide bar is provided with elongated hole, the bottom of pilot bar stretch out elongated hole downwards and with elongated hole sliding block joint; The upper surface place of described pilot bar and described slide bar and lower surface place are fixedly connected with the slide plate for limiting slide bar level attitude respectively, and slide plate coordinates with sliding bar;
One end of slide bar is provided with the slide opening for wearing stationary end side crane loading steel rope, and the other end of slide bar is fixedly connected with horizontally disposed blanking disc; The middle part of blanking disc is provided with loop hole;
Photoelectric switch includes transmitting terminal and receiving end; Fixed link is connected with cross tube and sheer pole, and the free end level of cross tube extends directly over loop hole center, and the free end level of sheer pole extends immediately below loop hole center; The free end of cross tube is fixedly connected with transmitting terminal or the receiving end of described photoelectric switch downwards, and the free end of sheer pole is upwards fixedly connected with receiving end or the transmitting terminal of described photoelectric switch.
Described pilot bar comprises epimere and hypomere, and epimere top is connected with lifting mechanism, is connected with elastomeric element between epimere and hypomere.
The utility model has following advantage:
When crane hook (or other suspender) is positioned at normal lifting position, the line between transmitting terminal and receiving end is by the center of loop hole, and the signal receiving end that now photoelectric switch transmitting terminal sends normally receives, and hoisting crane normally works.When hoisting wirerope generation beat (departing from normal operation position), the hoisting wirerope of stationary end side just drives blanking disc to move in the horizontal direction by slide bar; When the angle of beat exceeds preset value, blanking disc shelters from the signal that photoelectric switch transmitting terminal is launched, and the corresponding control hoisting crane of control circuit stops lifting vertical motion.The utility model structure is simple, is convenient to manufacture and install and use, and is applicable to that existing most of hoisting crane installs photo-electric hoisting crane of the present utility model additional and prevents that askew skewing hangs safety device, for the safe operation of hoisting crane provides safeguard.
The setting of elastomeric element, when can prevent hoisting wirerope beat larger angle, hoisting wirerope from applying larger strength to slide bar, recurring structure damages the phenomenon of (pilot bar damages or the damage such as slide bar and elongated hole thereof).
The combination of pilot bar and slide bar can make blanking disc do corresponding parallel motion along with the beat of hoisting wirerope.
The length of elongated hole in the middle part of slide bar, limits the moving range of slide bar, thus prevents blanking disc from departing from control position.
The utility model operation precision is high, because photoelectric switch is contactless element, therefore, it is possible to realize non-destructive test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of pilot bar;
Fig. 3 is the schematic circuit diagram that the utility model is connected in control panel circuit;
Fig. 4 is the physical circuit schematic diagram in B region in Fig. 3.
Detailed description of the invention
In Fig. 3 and Fig. 4,1DK is motor circuit switch; 2DK is control circuit switch; 1GLJ and 2GLJ is excess current contactless switch; ZDC is Stopper contact device; ZC is ascent direction contactless switch; FC is descent direction contactless switch; 1JSC and 4JSC is excision resistance contactor; FWL is one group of correlation photoelectric switch; KZ is control contactor.In Fig. 1, label 13A is depicted as the hoisting wirerope of stationary end side, and label 13B is the hoisting wirerope of opposite side.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, photo-electric hoisting crane of the present utility model prevents that askew skewing is hung safety device and comprised photoelectric switch, pilot bar 2, fixed link 3 and horizontally disposed slide bar 1, pilot bar 2 and fixed link 3 are all welded in (as being welded in the bottom of lifting mechanism 14) on lifting mechanism 14, be provided with elongated hole 4 along the length direction of slide bar 1 in the middle part of slide bar 1, the bottom of pilot bar 2 stretch out elongated hole 4 downwards and with elongated hole 4 sliding block joint; The upper surface place of described pilot bar 2 and described slide bar 1 and lower surface place are fixedly connected with the slide plate 30 for limiting slide bar 1 level attitude respectively, slide plate 30 and slide bar 1 bearing fit;
Be slidably connected in described elongated hole 4; One end of slide bar 1 is provided with the slide opening 5 for wearing hoisting crane stationary end side hoisting wirerope 13A, and the other end of slide bar 1 is fixedly connected with horizontally disposed blanking disc 7; The middle part of blanking disc 7 is provided with loop hole 6; The size of loop hole 6 internal diameter, directly impact allows the maximum angle of stationary end side hoisting wirerope 13A beat (departing from normal operation position).
Photoelectric switch includes transmitting terminal 8 and transmitting terminal 9; Fixed link 3 is connected with cross tube 20 and sheer pole 21, and the free end level of cross tube 20 extends directly over loop hole 6 center, and the free end level of sheer pole 21 extends immediately below loop hole 6 center; The free end of cross tube 20 is fixedly connected with transmitting terminal 8 or the receiving end 9 of described photoelectric switch downwards, and the free end of sheer pole 21 is upwards fixedly connected with receiving end 9 or the transmitting terminal 8 of described photoelectric switch.
Photoelectric switch is used for being connected with control circuit.When crane hook (or other suspender) is positioned at normal lifting position, the line between transmitting terminal 8 and receiving end 9 is by the center of loop hole 6.
Described pilot bar 2 comprises epimere 10 and hypomere 11, and epimere 10 top is connected with lifting mechanism 14, is connected with elastomeric element 12 between epimere 10 and hypomere 11.
Elastomeric element 12 preferably adopts high-strength spring.The setting of elastomeric element 12, can prevent the hole wall of hoisting wirerope 1 beat larger angle, elongated hole 4 stressed larger time recurring structure damage the phenomenon of (pilot bar 2 damages or slide bar 1 and elongated hole 4 thereof damage).
The hoisting wirerope 13A of stationary end side has certain altitude (length), and when beat, the distance of the hoisting wirerope horizontal-shift of top side is less than hoisting wirerope departure distance on the lower.Therefore, the height regulating slide bar 1 to install, can regulate the maximum angle allowing hoisting wirerope beat.The height that slide bar 1 is installed is higher, and when beat same angle, the horizontal displacement of blanking disc 7 is less, allows the maximum angle of hoisting wirerope beat larger; Otherwise the height that slide bar 1 is installed is lower, allow the maximum angle of hoisting wirerope beat less.
Pilot bar 2 and fixed link 3 preferably adopt expansion link.Such setting, by the setting height(from bottom) regulating the vertical extension of pilot bar 2 and fixed link 3 to regulate slide bar 1, can finally play the object regulating the maximum deflection angle of hoisting wirerope allowed.
Expansion link is this area routine techniques, can adopt more than the two sections sleeve pipes be threaded togather, and more than two sections also can be adopted to be slidably socketed together and the sleeve pipe fixed by pin and pin-and-hole; The structure of some other common expansion link can certainly be adopted.
Wherein, pilot bar 2 and fixed link 3 are welding structural element.Described photoelectric switch and transmitting terminal 8 thereof and receiving end 9 are this existing conventional components, and its concrete structure no longer describes in detail.
Lifting mechanism 14 can be dolly or electric block etc.Hoisting wirerope hoisting wirerope one end connecting some hoisting crane of reel 15(of upwards turning back again after walking around movable pulley (not shown) is downwards fixed on lifting mechanism, and the other end connects reel afterwards by running block and fixed pulley (group); Here illustrate to be only with reel 15 and illustrate mode of operation of the present utility model, do not form the restriction to hoisting crane).
Hang vital circuit to increase anti-askew skewing in PQR6402 control panel, during use, related circuit (as shown in Figure 3 and Figure 4) is connected in the control circuit of PQR6402 control panel.
If after Fig. 3 removes the structure in A, B, C, D tetra-regions, it is exactly the electrical schematic diagram (locally) of existing PQR6402 control panel.A-quadrant in Fig. 3 is that photo-electric hoisting crane of the present utility model is prevented askewly skewing the transforming circuit (safety voltage) hanging safety device; B region in Fig. 3 is that photo-electric hoisting crane of the present utility model is prevented askewly skewing the triggering part hanging safety device; C region in Fig. 3 is the wiring position of (often opening) contact of a correct described control contactor KZ; D region in Fig. 4 is the wiring position of (often opening) contact of a wrong described control contactor KZ.When being connected in control circuit by the utility model, can not be connected to the D region place in Fig. 4, the D region in Fig. 4 is only this connection location of easily makeing mistakes of display, and in fact this place does not have the circuit structure newly increased.
In Fig. 3, label 16 is drg, and label 17 is lifting motor; These structures are also the existing apparatus that existing PQR6402 control panel connects, and specifically no longer describe in detail.
PQR6402 control panel and control circuit thereof are prior art, have one for controlling the hoisting limiter contact 19 of lifting height of crane in this control circuit.When being connected to by the utility model in the control circuit of PQR6402 control panel, photoelectric switch FWL and control contactor KZ is connected with the control circuit of PQR6402 control panel by transforming circuit (safety voltage).The open contact of described control contactor KZ is connected on contact 19 place of described hoisting limiter.The open contact of control contactor shown in figure is connected on contact 19 place of described hoisting limiter, is only citing, does not limit in the circuit open contact of control contactor being connected on other types restriction lifting height of crane and hoisting capacity.
When suspension hook (or other suspender) is positioned at normal lifting position, the signal that photoelectric switch transmitting terminal sends normally is received by the receiving end, center of loop hole 6, photoelectric switch is in conducting state, now the open contact of control contactor KZ is in closure state, contact 19 normally of hoisting limiter.
When hoisting wirerope generation beat (departing from normal operation position), the hoisting wirerope 13A of stationary end side just drives blanking disc 7 to move in the horizontal direction by slide bar; When the angle (angle of hoisting wirerope beat) of beat exceeds preset value, blanking disc shelters from the signal that photoelectric switch transmitting terminal is launched, photoelectric switch disconnects, control contactor KZ dead electricity causes its open contact to disconnect, make hoisting limiter contact 19 dead electricity, thus play and disconnect identical effect with hoisting limiter contact, namely allow lifting mechanism to run downwards or hover, do not allow lifting mechanism upwards to run.
It should be noted that design anti-askew skew hang vital circuit time, can not blindly according to anti-askew skew and hang safety device action time automatically disconnect ascent direction contactless switch and the Stopper contact device of hoisting crane, limit this theory of crane hoisting function with this and carry out designing (may potential safety hazard be there is).Still prevent askewly skewing the circuit hanging safety device for above-mentioned increase, if the contact of control contactor is not and hoisting limiter contact series, but connect respectively with hoist contactless switch and Stopper contact device, as shown in D region in Fig. 3, when anti-askew skew the contact switch action of hanging safety device after (namely photoelectric switch disconnects afterwards), control contactor KZ dead electricity, its open contact disconnects.If now, hoisting crane keeps off or 3 gears that decline in decline 2, then ascent direction contactless switch ZC, descent direction contactless switch FC and Stopper contact device ZDC are all in power failure state, cause the situation that mechanism cannot run downwards.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-mentioned example, those of ordinary skill in the art is to be understood that: still can modify to the utility model or equivalent replacement, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (2)
1. photo-electric hoisting crane prevents that askew skewing hangs safety device, it is characterized in that: comprise photoelectric switch, pilot bar, fixed link and horizontally disposed slide bar, pilot bar and fixed link are all welded on lifting mechanism, length direction along slide bar in the middle part of slide bar is provided with elongated hole, the bottom of pilot bar stretch out elongated hole downwards and with elongated hole sliding block joint; The upper surface place of described pilot bar and described slide bar and lower surface place are fixedly connected with the slide plate for limiting slide bar level attitude respectively, and slide plate coordinates with sliding bar;
One end of slide bar is provided with the slide opening for wearing stationary end side crane loading steel rope, and the other end of slide bar is fixedly connected with horizontally disposed blanking disc; The middle part of blanking disc is provided with loop hole;
Photoelectric switch includes transmitting terminal and receiving end; Fixed link is connected with cross tube and sheer pole, and the free end level of cross tube extends directly over loop hole center, and the free end level of sheer pole extends immediately below loop hole center; The free end of cross tube is fixedly connected with transmitting terminal or the receiving end of described photoelectric switch downwards, and the free end of sheer pole is upwards fixedly connected with receiving end or the transmitting terminal of described photoelectric switch.
2. photo-electric hoisting crane according to claim 1 prevents that askew skewing hangs safety device, it is characterized in that: described pilot bar comprises epimere and hypomere, and epimere top is connected with lifting mechanism, is connected with elastomeric element between epimere and hypomere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779645.XU CN205034983U (en) | 2015-10-10 | 2015-10-10 | Photoelectric type hoist is prevented askew drawing and is hung safety device to one side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779645.XU CN205034983U (en) | 2015-10-10 | 2015-10-10 | Photoelectric type hoist is prevented askew drawing and is hung safety device to one side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205034983U true CN205034983U (en) | 2016-02-17 |
Family
ID=55293898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520779645.XU Expired - Fee Related CN205034983U (en) | 2015-10-10 | 2015-10-10 | Photoelectric type hoist is prevented askew drawing and is hung safety device to one side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205034983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258558A (en) * | 2017-05-07 | 2019-09-20 | 云南建投第十三建设有限公司 | A kind of turnover preventor structure being arranged on drilling machine |
-
2015
- 2015-10-10 CN CN201520779645.XU patent/CN205034983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258558A (en) * | 2017-05-07 | 2019-09-20 | 云南建投第十三建设有限公司 | A kind of turnover preventor structure being arranged on drilling machine |
| CN110258558B (en) * | 2017-05-07 | 2021-07-06 | 云南建投第十三建设有限公司 | Anti-overturning mechanism arranged on drilling machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204454140U (en) | A kind of Pop-up falling proof device of lifting means | |
| CN105253777A (en) | Resistance type crane safety device capable of preventing aslant pulling and hanging | |
| CN105186378A (en) | Power transmission line channel crossing protection mechanism | |
| CN205061410U (en) | Ring column crane is prevented askew drawing and is hung safety device to one side | |
| CN203699606U (en) | Lifter and iron tower | |
| CN202268634U (en) | Sling special for breaker | |
| CN205034983U (en) | Photoelectric type hoist is prevented askew drawing and is hung safety device to one side | |
| CN205034984U (en) | Resistance -type hoist is prevented askew drawing and is hung safety device to one side | |
| CN102633190B (en) | Control method and device for super-lift system, super-lift system and engineering machinery | |
| CN204702420U (en) | A kind of anti-steel rope breaking device | |
| CN103950841A (en) | Auxiliary hoisting device for outer-side cross arms of crank arm of wine glass type ultrahigh-voltage transmission line iron tower | |
| CN101343023B (en) | Comprehensive protector for safety of tower crane | |
| CN102381623A (en) | Special lifting tool for circuit breaker | |
| CN205204672U (en) | Two hook crane | |
| CN204661180U (en) | A kind of tower crane | |
| CN205222581U (en) | Disconnected rope device is prevented to four post machines of lifting | |
| CN210885046U (en) | Tower crane jacking anti-overturning device | |
| CN108975177B (en) | Novel construction elevator | |
| CN205240982U (en) | Lift barrier intercepting device | |
| CN110654998A (en) | Tower crane jacking anti-overturning device | |
| CN104909139A (en) | Constant-torque integral broken belt catching device and catching method thereof | |
| CN204136235U (en) | One climbs bucket type mixing plant hopper protective device | |
| CN204416950U (en) | Crane in bridge type fixed pulley preventing wire rope from falling slot device | |
| CN205617870U (en) | Protection device that falls is prevented in stereo garage special use | |
| CN104528556A (en) | Automatic third support folding and unfolding device and crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20161010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |