CN103407921B - Lifting mechanism of crane - Google Patents
Lifting mechanism of crane Download PDFInfo
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- CN103407921B CN103407921B CN201310400358.9A CN201310400358A CN103407921B CN 103407921 B CN103407921 B CN 103407921B CN 201310400358 A CN201310400358 A CN 201310400358A CN 103407921 B CN103407921 B CN 103407921B
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Abstract
The invention provides a lifting mechanism of a crane. The lifting mechanism comprises a drive mechanism, a dual-link rolling drum, a steel rope device, a horizontal guide mechanism, a vertical guide mechanism, a balance mechanism and a lifting mechanism; the steel rope device comprises a first steel rope, a second steel rope, a third steel rope and a fourth steel rope; the horizontal guide mechanism comprises at least four horizontal guide pulleys which are arranged symmetrically corresponding to the centerline of the double-link rolling drum; the vertical guide mechanism comprises four vertical guide pulleys; the balance mechanism comprises a large balance arm, two small balance arms and a connecting rod, wherein the small balance arms are arranged symmetrically at the two ends of the large balance arm in a manner of corresponding to the large balance arm; each steel rope extends downwards in the vertical direction after bypassing the corresponding horizontal guide pulley and vertical guide pulley and is then fixedly connected with the lifting mechanism, and when uneven forces are applied on the steel ropes during rolling of the double-link rolling drum, the balance mechanism can swing, and when the forces on the steel ropes are balanced, the balance mechanism stops swinging.
Description
Technical field
The present invention relates to hoisting crane, particularly the lifting mechanism of hoisting crane.
Background technology
Some hoisting crane, in hoisting process, requires the lifting that proof load must be vertical in the whole process that hoists.Most hoisting crane is all using suspension hook as load-engaging device, and current suspension hook is all as effort-saving mechanism at use movable pulley device.Particularly for duty ratio larger hang thing, usually make the coiling multiplying power of steel rope improve.But this means that steel rope is worn the total hop count walking around assembly pulley both sides and increased, thus cause interfering between steel rope.In order to ensure not interfere between steel rope, a large pulley all can be set to adjust the lower rope angle of steel rope, but the lifting that so just very difficult proof load can be vertical in the process of hoisting.
Summary of the invention
The present invention will the lifting mechanism of hoisting crane hang load with time, make load keep vertically stable lifting.
For solving the problems of the technologies described above, the invention provides a kind of crane hoisting mechanism and comprising: driver train, a double crosslinking drum, wire rope device, two groups of symmetrically arranged horizontally-guided mechanisms, vertically-guided mechanism, an equalizing gear and lifting mechanisms; This driver train for driving two reel synchronous rotaries of symmetrically arranged double crosslinking drum, thus drives steel rope to reel on this double crosslinking drum; Wire rope device comprises first to fourth steel rope, and each reel of double crosslinking drum reels respectively 2 steel ropes; This horizontally-guided mechanism comprises at least four horizontally-guided pulleys altogether, and its line of centers corresponding to this double crosslinking drum is symmetrical arranged; This vertically-guided mechanism comprises 4 vertically-guided pulleys altogether; This equalizing gear comprises a large equilibrium arm, and little equilibrium arm and the connecting rod at large equilibrium arm two ends is symmetricly set on relative to this large equilibrium arm, each little equilibrium arm and two horizontally-guided pulleys hinged, this large equilibrium arm by connecting rod and little equilibrium arm hinged, this large equilibrium arm is articulated with on the pedestal of this crane hoisting mechanism; Wherein, after each steel rope walks around corresponding horizontally-guided pulley and vertically-guided pulley, extend downward vertically and fix with this lifting mechanism, when there is steel rope discontinuity in this double crosslinking drum winding process, this equalizing gear swings, until steel rope stress balance, stops swinging.
In sum, the present invention guides four steel ropes by horizontally-guided mechanism and vertically-guided mechanism, and is regulated by the steel rope of equalizing gear to discontinuity, and make in lifting process, all steel ropes reach balance automatically.And four steel ropes carry out the winding of single multiplying power, can not interfere, thus realize laborsaving, stable lifting between steel rope.
Accompanying drawing explanation
Fig. 1 is the birds-eye view of crane hoisting mechanism of the present invention.
Fig. 2 is the birds-eye view of the simplification of lifting mechanism of the present invention.
Fig. 3 is the cutaway view along A-A line in Fig. 1.
Fig. 4 be in Fig. 1 B to schematic diagram.
Fig. 5 be in Fig. 1 B to rough schematic view.
Fig. 6 is the cutaway view of C-C line in Fig. 1
Fig. 7 is the birds-eye view of the suspender of crane hoisting mechanism of the present invention.
Fig. 8 is the cutaway view along B-B line in Fig. 7.
Fig. 9 is that steel rope occurs that degree of tightness differs the schematic diagram of situation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Lifting mechanism of the present invention adopts four steel ropes to carry out the winding of single multiplying power, and to realize laborsaving, stable lifting, its concrete structure is as follows.
As shown in Figure 1, crane hoisting mechanism comprises: driver train 1, double crosslinking drum 2, wire rope device 3, two groups of symmetrically arranged horizontally-guided mechanisms 4, vertically-guided mechanism 5, equalizing gear 6 and lifting mechanisms 7.
The present embodiment comprises two groups of driver trains, and each group driver train 1 comprises electrical motor 11, drg 12 and retarder 13, two groups of driver trains 1 and shares a slow-speed shaft coupler 14, and connects left and right two retarder 13 output shafts by slow-speed shaft coupler 14.
Double crosslinking drum 2 comprises the symmetrical reel in two, left and right, and each reel is respectively provided with one group of electrical motor 11 and retarder 13, and synchronous rotary.
Two groups of symmetrically arranged horizontally-guided mechanisms 4 comprise 8 horizontally-guided pulleys altogether, i.e. the first to the 8th horizontally-guided pulley 41-48.First, second, the 5th, the 6th horizontally-guided pulley and the 3rd, the 4th, the 7th, the 8th horizontally-guided pulley arranges relative to the Central Symmetry of crane hoisting mechanism.Therefore, below to first, second, the 5th, the structure of the 6th horizontally-guided pulley is described in detail.
With reference to Fig. 1,3,4, first, second horizontally-guided pulley 41,42 is the placement that lies low, and it is connected on pedestal 81 by permanent seat 82, and pedestal 81 can be the dolly of hoisting crane.Five, the 6th horizontally-guided pulley 45,46 is vertically place.
Vertically-guided mechanism 5 comprises 4 vertically-guided pulleys, i.e. first to fourth vertically-guided pulley 51-54.Vertically-guided mechanism 5 is connected on pedestal 81 by permanent seat 83, and as shown in Figure 3, vertically-guided mechanism 5 between symmetrical horizontally-guided mechanism 4, corresponding lifting mechanism 7 below it.A vertically-guided mechanism 5 is only schematically illustrated in order to clearly illustrate in vertically-guided mechanism 5, Fig. 3.
Equalizing gear 6 comprises little equilibrium arm 61, connecting rod 62 and large equilibrium arm 63.The two ends of large equilibrium arm 63 are respectively provided with one group little equilibrium arm 61 and connecting rod 62.As shown in Figure 1, the little equilibrium arm 61 of large equilibrium arm 63 left end and connecting rod 62 for regulating four the horizontally-guided pulleys walking around the left side, namely first, second, the 5th, the balance of the steel rope of the 6th horizontally-guided pulley 41,42,45,46.The little equilibrium arm 61 of large equilibrium arm 63 right-hand member and connecting rod 62 are for regulating four the horizontally-guided pulleys walking around the right, i.e. the balance of the steel rope of the 3rd, the 4th, the 7th, the 8th horizontally-guided pulley 43,44,47,47.The two groups little equilibrium arms 61 in left and right are identical with the structure of connecting rod 62, are only described with left side below.Little equilibrium arm 61 can be articulated with between the 5th, the 6th horizontally-guided pulley 45,46.Large equilibrium arm 63 is articulated with little equilibrium arm 61 by connecting rod 62.In the present embodiment, it is hinged with it through the perforation on connecting rod 62 that the end of large equilibrium arm 63 is respectively provided with the first rotating shaft 631, first rotating shaft 631.Large equilibrium arm 63 is articulated with pedestal 81.In the present embodiment, the middle part of large equilibrium arm 63 is provided with the second rotating shaft 632, second rotating shaft 632 and is fixed on the bearing 84 of pedestal 81, makes large equilibrium arm 63 can relative to pedestal 81 pivotable.In the present embodiment, when all steel ropes are in stress balance state, little equilibrium arm 61 and large equilibrium arm 63 approximate horizontal, connecting rod 62 is vertically connected at therebetween.
Below, the winding mode of steel rope is described.
Wire rope device 3 comprises four steel ropes altogether.As shown in Figure 2, first, second steel rope 31,32 of winding steel wire rope device 3 from outside to inside on the reel of left side, the 3rd, the 4th steel rope 33,34 of winding steel wire rope device 3 from outside to inside on the reel of right side.The one ends wound of the first steel rope 31 is on the reel of left side, the other end is successively walked around in the direction of the arrow on the 5th, first horizontally-guided pulley 45,41, as schematically illustrated in Fig. 5, the direction longitudinal direction as shown in Figure 2 of the first steel rope 31 is made to change into transverse direction, finally laterally moved on the first vertically-guided pulley 51, walk around from it, as schematically illustrated in Fig. 3, make the direction of the first steel rope 31 lateral transition as shown in Figure 3 be vertical direction, finally this end is fixed on the lifting mechanism 7 of below.
Second, third, the canoe of the 4th steel rope 32,33,34 and the first steel rope 31 similar, below they are simply described.
The one ends wound of the second steel rope 32 is on the reel of left side, and the other end successively walks around the 6th horizontally-guided pulley 46, second horizontally-guided pulley 42 and the second vertically-guided pulley 52 in the direction of the arrow, and finally this end is vertically on the sagging lifting mechanism 7 being fixed on below.In the present embodiment, as shown in Figure 2, the first, the 4th vertically-guided pulley 51,54 is coaxially arranged, and the lower rope point A1 of the first steel rope 31 is on the right of the first vertically-guided pulley 51, and the lower rope point A2 of the second steel rope 32 is on the right of the second vertically-guided pulley 52.
The one ends wound of the 3rd steel rope 33 is on the reel of right side, the other end successively walks around the 8th horizontally-guided pulley 48, the 3rd horizontally-guided pulley 43 and the 4th vertically-guided pulley 54 in the direction of the arrow, and finally this end is vertically on the sagging lifting mechanism 7 being fixed on below.
The one ends wound of the 4th steel rope 34 is on the reel of right side, and the other end successively walks around the 7th horizontally-guided pulley 47, the 4th horizontally-guided pulley 44 and the 3rd vertically-guided pulley 53 in the direction of the arrow, and finally this end is vertically on the sagging lifting mechanism 7 being fixed on below.
As shown in Figure 7, the first steel rope 31 to the lower rope point A1-A4 of the 4th steel rope 34 to lay respectively in figure first, the 3rd, second, in fourth quadrant.
Lifting mechanism 7 comprises suspender 71 and hangs fork 72.As shown in Figure 7,8, suspender 71 is circular slab, and center has fixed orifice 73, hangs the upper end of fork 72 through fixed orifice 73, and is fixed by nut 74.Bearing 75 is between nut 74 and suspender 71, and its inner ring is fixed on suspender 71, and nut 74 is fixed in outer ring, and making to hang fork 72 like this can rotate on suspender 71.The lower end of hanging fork 72 is fixed in load by bearing pin (not shown).
Load weight is born by 4 steel ropes, because of various manufacture and installation error, may cause 4 stressed differences of steel rope, and then it is crooked to cause suspender 71 to have certain level, affects the lifting of load.Equalizing gear 6 of the present invention can head it off.
As shown in Figure 9, it illustrates first, second steel rope 31,32 and occur the situation that degree of tightness differs, wherein, the outgoing line part of the first steel rope 31 is longer than the second steel rope 32, and little equilibrium arm 61 is swung by initial level attitude, presents the position shown in Fig. 9.Because the first steel rope 31 is greater than from the length that reel 2 arrives the 5th horizontally-guided pulley 45 second steel rope 32 to arrive the 6th horizontally-guided pulley 46 length from reel 2, make the stressed larger of the first steel rope 31, second steel rope 32 is stressed less, therefore the first steel rope 31 is large for the pressure of reel 2, and the friction force between reel 2 is large, larger friction force can not produce slip when the first steel rope 31 is reeled on reel 2, namely, the winding be close to completely with reel 2, winding amount is larger; Contrary, because the friction force between the second steel rope 32 and reel 2 is less, therefore, it is not close to reel 2, and winding amount is less.Along with first, second steel rope 31,32 such winding methods, the outgoing line part length of first, second steel rope 31,32 final reaches consistent, simultaneously, little equilibrium arm 61 is rocked to initial level attitude by previous obliquity, and the stressed of first, second steel rope 31,32 reaches balance.
Similar, when the stressed difference of the two groups of wires in left and right, by the swing of large equilibrium arm 63 relative to connecting rod 62, regulate the stressed of the reel 2 of both sides, finally make four steel ropes unanimously stressed, reach balance.
In sum, the present invention guides four steel ropes by horizontally-guided mechanism and vertically-guided mechanism, and is regulated by the steel rope of equalizing gear to discontinuity, and make in lifting process, all steel ropes reach balance automatically.And four steel ropes carry out the winding of single multiplying power, can not interfere, thus realize laborsaving, stable lifting between steel rope.
It should be noted that: the present invention comprises eight horizontally-guided pulleys for horizontally-guided mechanism to be described, in fact, first to fourth horizontally-guided pulley 41-44 can be omitted, namely, such as make the first steel rope after the 5th horizontally-guided pulley 45, directly move on the first vertically-guided pulley 51.Certainly, the quantity of horizontally-guided pulley can according to circumstances be increased.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (6)
1. a crane hoisting mechanism comprises: driver train, a double crosslinking drum, wire rope device, vertically-guided mechanism, an equalizing gear and a lifting mechanism; This driver train for driving two reel synchronous rotaries of symmetrically arranged double crosslinking drum, thus drives steel rope to reel on this double crosslinking drum; Wire rope device comprises first to fourth steel rope, and each reel of double crosslinking drum reels respectively 2 steel ropes; It is characterized in that:
This crane hoisting mechanism also comprises two groups of symmetrically arranged horizontally-guided mechanisms, and this horizontally-guided mechanism comprises at least four horizontally-guided pulleys altogether, and its line of centers corresponding to this double crosslinking drum is symmetrical arranged; This vertically-guided mechanism comprises 4 vertically-guided pulleys altogether; This equalizing gear comprises a large equilibrium arm, and little equilibrium arm and the connecting rod at large equilibrium arm two ends is symmetricly set on relative to this large equilibrium arm, each little equilibrium arm and two horizontally-guided pulleys hinged, this large equilibrium arm by connecting rod and little equilibrium arm hinged, this large equilibrium arm is articulated with on the pedestal of this crane hoisting mechanism; Wherein, after each steel rope walks around corresponding horizontally-guided pulley and vertically-guided pulley, extend downward vertically and fix with this lifting mechanism, when there is steel rope discontinuity in this double crosslinking drum winding process, this equalizing gear swings, until steel rope stress balance, stops swinging.
2. crane hoisting mechanism as claimed in claim 1, wherein, one group in this Liang Zu horizontally-guided mechanism comprises first, second, 5th, 6th horizontally-guided pulley, another group in this Liang Zu horizontally-guided mechanism comprises the 3rd, 4th, 7th, 8th horizontally-guided pulley, this Liang Zu horizontally-guided mechanism is symmetrical arranged relative to the line of centers of this double crosslinking drum, this is first years old, second, 3rd, 4th horizontally-guided pulley is the placement that lies low, it is connected on this pedestal, 5th, 6th, 7th, 8th horizontally-guided pulley is vertically place, and be articulated with the two ends of little equilibrium arm.
3. crane hoisting mechanism as claimed in claim 2, wherein, this vertically-guided mechanism comprises first to fourth vertically-guided pulley, this vertically-guided mechanism is connected to this pedestal, this vertically-guided mechanism is between symmetrical horizontally-guided mechanism, and the top being positioned at this lifting mechanism aligned.
4. crane hoisting mechanism as claimed in claim 3, wherein, the one ends wound of this first steel rope is wherein on a reel, the other end successively walks around the 5th horizontally-guided pulley, the first horizontally-guided pulley and the first vertically-guided pulley, and finally this end is vertically sagging is fixed on this lifting mechanism; The one ends wound of this second steel rope is wherein on a reel, and the other end successively walks around the 6th horizontally-guided pulley, the second horizontally-guided pulley and the second vertically-guided pulley, and finally this end is vertically sagging is fixed on this lifting mechanism; The one ends wound of the 3rd steel rope is on another reel, and the other end successively walks around the 3rd horizontally-guided pulley, the 8th horizontally-guided pulley and the 4th vertically-guided pulley, and finally this end is vertically sagging is fixed on this lifting mechanism; The one ends wound of the 4th steel rope is on another reel, and the other end successively walks around the 7th horizontally-guided pulley, the 4th horizontally-guided pulley and the 3rd vertically-guided pulley, and finally this end is vertically sagging is fixed on this lifting mechanism.
5. crane hoisting mechanism as claimed in claim 4, wherein, when all steel ropes are in stress balance state, this little equilibrium arm and large equilibrium arm are in level, and this connecting rod is vertically connected between this little equilibrium arm and large equilibrium arm.
6. crane hoisting mechanism as claimed in claim 4, wherein, this lifting mechanism comprises suspender and hangs fork, the center of this suspender has fixed orifice, and this hangs the upper end of fork through fixed orifice, and is fixed by nut, one bearing is between nut and suspender, and the inner ring of this bearing is fixed on this suspender, this nut is fixed in outer ring, and making this hang fork can rotate on this suspender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310400358.9A CN103407921B (en) | 2013-09-05 | 2013-09-05 | Lifting mechanism of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310400358.9A CN103407921B (en) | 2013-09-05 | 2013-09-05 | Lifting mechanism of crane |
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| Publication Number | Publication Date |
|---|---|
| CN103407921A CN103407921A (en) | 2013-11-27 |
| CN103407921B true CN103407921B (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310400358.9A Active CN103407921B (en) | 2013-09-05 | 2013-09-05 | Lifting mechanism of crane |
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| CN (1) | CN103407921B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109276039B (en) * | 2018-10-16 | 2024-05-28 | 广东顶固集创家居股份有限公司 | Lifting cabinet and four-wire synchronous winding and unwinding device thereof |
| CN109987535B (en) * | 2019-05-13 | 2023-08-11 | 河南剑宏科技有限公司 | Constant force traction (tensioning) traction rope traction device capable of winding rope |
| CN110407120A (en) * | 2019-08-05 | 2019-11-05 | 希美克(广州)实业有限公司 | Lifting cabinet and its wirerope steering system, wirerope transfer |
| CN118405604B (en) * | 2024-06-28 | 2024-08-30 | 河南科技学院 | Crane sling balancing structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1916644U (en) * | 1964-11-18 | 1965-05-26 | Eckard Bruns | GLIDER WITH A COMBUSTION ENGINE. |
| CN1212232A (en) * | 1998-09-23 | 1999-03-31 | 太原重型机械(集团)有限公司 | Swing-proof device for crane slings |
| CN102092649A (en) * | 2011-01-21 | 2011-06-15 | 太原重工股份有限公司 | Lifting mechanism for electromagnetic disc crane |
| CN202848945U (en) * | 2012-10-10 | 2013-04-03 | 纽科伦（新乡）起重机有限公司 | Hoisting mechanism for crane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1916644B2 (en) * | 1969-04-01 | 1976-04-29 | Fried. Krupp Gmbh, 4300 Essen | SAFETY LIFTING GEAR, IN PARTICULAR FOR A WATER CRANE |
-
2013
- 2013-09-05 CN CN201310400358.9A patent/CN103407921B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1916644U (en) * | 1964-11-18 | 1965-05-26 | Eckard Bruns | GLIDER WITH A COMBUSTION ENGINE. |
| CN1212232A (en) * | 1998-09-23 | 1999-03-31 | 太原重型机械(集团)有限公司 | Swing-proof device for crane slings |
| CN102092649A (en) * | 2011-01-21 | 2011-06-15 | 太原重工股份有限公司 | Lifting mechanism for electromagnetic disc crane |
| CN202848945U (en) * | 2012-10-10 | 2013-04-03 | 纽科伦（新乡）起重机有限公司 | Hoisting mechanism for crane |
Non-Patent Citations (1)
| Title |
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| 程兆辉,朱东科,王照锋.平衡臂装置在桥式起重机起升机构中的应用.《应用技术》.2011,(第08期),82-83. * |
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| CN103407921A (en) | 2013-11-27 |
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