CN215854727U - Hoisting mechanism of double-sling crane and crane using same - Google Patents
Hoisting mechanism of double-sling crane and crane using same Download PDFInfo
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- CN215854727U CN215854727U CN202122351241.9U CN202122351241U CN215854727U CN 215854727 U CN215854727 U CN 215854727U CN 202122351241 U CN202122351241 U CN 202122351241U CN 215854727 U CN215854727 U CN 215854727U
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Abstract
The utility model provides a hoisting mechanism of a double-crane and a crane applied by the hoisting mechanism. Hoisting mechanism includes the reduction gear and connects two sets of transmission system in the reduction gear both sides, and transmission system is including being close to the low-speed axle of reduction gear and the high-speed axle of keeping away from the reduction gear center connect actuating system on the high-speed axle, including motor and transmission shaft, the transmission shaft passes through the shaft coupling and links to each other with the reduction gear high-speed axle, the epaxial reel that is connected with of reduction gear low-speed, the reel realizes the lift rather than the hoist that links to each other through coiling wire rope. The hoisting mechanism is formed by connecting the low-speed shafts of the double transmission systems, and the other transmission system can be used for driving the whole mechanism to work under the condition of an accident, such as single motor failure or shaft breakage, gear beating and the like of the high-speed shaft system of the speed reducer on one side or the middle shaft system, so that the production efficiency is not influenced. The low-speed shaft connection is realized through the idler wheel arranged in the speed reducer, so that two sets of safety brakes and speed detection equipment with high price can be saved.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a hoisting mechanism of a double-crane and a crane applied by the hoisting mechanism.
Background
The tundish is technological equipment for steel-making continuous casting operation in a steel mill, and is used for pouring molten steel refined by a converter into the tundish, and then distributing the molten steel to each crystallizer through a water distribution port on the tundish to complete the distribution of the molten steel. The hoisting tundish crane is used for hoisting a tundish from the rotary table to a safe position in order to avoid accident enlargement when a continuous casting machine breaks down. The pouring basket is generally provided with four hanging trunnions, and the gravity center of most pouring baskets used in domestic steel mills at present is not the geometric center of the pouring basket due to the reasons that the arrangement position of a water diversion port of some pouring baskets is deviated to one side, the pouring drop position of a large ladle is not the central point and the like. The existing hoisting tundish crane shown in fig. 1(a), (b) and (c) adopts a steel wire rope to hang a four-plate hook single hanger, and the existing four-plate hook hanger cannot overcome the overturning trend caused by the misalignment of the gravity center of the tundish and the gravity center of the hanger during hoisting, so that the unbalance loading condition is easy to occur during hoisting the tundish, and when the tundish is filled with molten steel, the unbalance loading easily causes the danger of molten steel spilling. Publication number CN202245873U discloses "tundish crane and hoisting mechanism thereof", the hoisting mechanism thereof is connected by high-speed shafts, and according to national standard JB/T7688.5-2012 "technical conditions of metallurgical crane: the two sets of driving devices of the main hoisting mechanism of the ladle crane have to be provided with a safety brake on a winding drum when an output shaft is not rigidly connected, and the safety brake and detection equipment are not additionally arranged, so that the safety brake and the detection equipment do not meet the latest national standard. The whole machine of the lifting mechanism adopts four steel wire rope winding systems, molten steel sprinkling danger can be generated when a single steel wire rope is broken, the lifting mechanism adopts a speed reducer high-speed shaft connection mode, and if any gear shaft system is broken and tooth beating occurs, a load falling accident can occur in the whole mechanism. Similarly, the hoisting mechanism disclosed in CN1785788A, which is a differential hoisting mechanism for two drums of a double 40-foot shore container crane, adopts a planetary reducer scheme, and a safety brake needs to be added on the drum, and a detection device needs to be arranged. The arrangement thereof does not comply with the latest national standard.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned technical problems, a hoisting mechanism of a double-crane and a crane are provided. The technical means adopted by the utility model are as follows:
the utility model provides a hoisting mechanism of two hoist cranes, includes the reduction gear and connects two sets of transmission system in the reduction gear both sides, transmission system is including being close to the reduction gear low-speed axle of reduction gear and the reduction gear high-speed axle of keeping away from the reduction gear center, epaxial actuating system of connecting of reduction gear high-speed, including motor and transmission shaft, the transmission shaft passes through the shaft coupling and links to each other with the reduction gear high-speed axle, the epaxial reel that is connected with of reduction gear low-speed, the reel is realized the lift rather than the hoist that links to each other through coiling wire rope.
Further, the speed reducer is a straight-line-shaped large speed reducer, specifically, the speed reducer is internally composed of two sets of multi-stage transmission gear sets which are arranged in central symmetry, and the middles of the two sets of low-speed gear sets are connected by adopting an idler wheel.
Further, the reel is a quadruple reel.
Further, the elevating system of hoist includes reel, assembly pulley, balance arm and sets up the wire rope winding system on the balance arm, the pulley setting of assembly pulley is on balance arm and lifting hook roof beam, each pulley and reel on the assembly pulley are walked around to wire rope winding system, and the during operation, every set of transmission system is transmitted the high-speed axle of reduction gear with the moment of torsion by motor drive shaft coupling and transmission shaft, and the inside gear engagement of reduction gear is transmitted the moment of torsion to low-speed quadruplex reel group again, the rising and the decline of hoist are realized in the operation of quadruplex reel group.
Furthermore, the lifting appliance is formed by assembling two sets of completely identical lifting hook beams which are not directly connected, and comprises a plate hook, a fork-shaped part, a lifting hook beam and a heat insulation plate, wherein the fork-shaped part is fixedly connected to the bottom of the lifting hook beam, and the plate hook is hinged to the fork-shaped part.
Further, each drive system is equipped with two brakes.
The utility model also discloses a crane applying the hoisting mechanism, which comprises a bridge frame, a trolley, a cart running mechanism, the hoisting mechanism of the double-sling crane and a sling, wherein the hoisting mechanism of the double-sling crane is arranged on the trolley.
The utility model has the following advantages:
1. the hoisting mechanism is formed by connecting low-speed shafts of double transmission systems, and the other transmission system can be used for driving the whole mechanism to work under the condition of an accident, such as single motor failure or shaft breakage, gear beating and the like of a high-speed shaft system of a speed reducer on one side or an intermediate shaft system, so that the production efficiency is not influenced;
2. the lifting appliance is assembled by two sets of lifting hook beams which are not directly connected, the lifting appliance is not influenced by load unbalance loading during lifting, and because the low-speed shafts of the lifting speed reducers are connected by idle wheels, the lifting of the two lifting appliances is completely synchronous, so that the danger of molten steel spilling is avoided in the lifting process;
3. each set of lifting appliance is provided with four steel wire ropes, and any one broken lifting appliance or two broken lifting appliances at the opposite angles cannot fall and tip over. The whole mechanism consists of eight steel wire ropes, and the two groups of lifting appliances allow four steel wire ropes to be broken at most without falling danger, so that the safety is high.
4. The internal idle wheel of the linear large speed reducer is connected with the low-speed shaft, so that the transmission chain has fewer links and high efficiency and safety compared with the high-speed shaft.
5. According to the technical conditions of the national standard JB/T7688.5-2012 metallurgy crane: the two sets of driving devices of the main hoisting mechanism of the ladle crane have to be provided with the safety brake on the winding drum when the output shafts are not rigidly connected, and the low-speed shaft connection is realized by the idle wheel arranged in the speed reducer, so that two sets of safety brakes and speed detection equipment with high price can be saved, the vehicle height of the whole crane is greatly reduced, and the plant investment cost is also greatly reduced for users.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a conventional single-spreader four-plate hook tundish crane, wherein (a) is a front view, (b) is a top view, and (c) is a side view.
FIG. 2 is a schematic structural diagram of the present invention, wherein (a) is a front view, (b) is a top view, and (c) is a side view.
Fig. 3 is a schematic structural diagram of a hoisting mechanism of the utility model.
Fig. 4 is a schematic view of the internal structure of the linear large speed reducer of the present invention.
Fig. 5 is a schematic diagram of the winding of the steel cord of the present invention.
FIG. 6 is a schematic view of the assembly of a hook beam of the present invention, wherein (a) is a front view; (b) is a side view.
In the figure: 1. a bridge frame; 2. a trolley; 3. a cart running mechanism; 4. a hoisting mechanism; 5. a spreader; 41. an electric motor; 42. a brake; 43. a drive shaft; 44. a coupling; 45. a balance arm; 46. a fixed pulley block; 47. a quadruple reel group; 48. a speed reducer; 481. assembling an idler wheel; 482. a low-speed shaft of the reducer; 483. a reducer high-speed shaft; 51. a first plate hook; 52. a fork-shaped piece; 53. a hook beam; 54. a heat insulation plate; 55. a movable pulley block; 56. a second plate hook.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2(a), (b), and (c), the embodiment discloses a hoisting mechanism of a double-crane, as shown in fig. 3, the hoisting mechanism includes a speed reducer 48 and two sets of transmission systems connected to both sides of the speed reducer, each transmission system includes a speed reducer low-speed shaft 482 close to the speed reducer and a speed reducer high-speed shaft 483 far away from the center of the speed reducer, the speed reducer high-speed shaft is connected with a driving system, which includes a motor 41 and a transmission shaft 43, the transmission shaft is connected with the speed reducer high-speed shaft through a coupler 44, the speed reducer low-speed shaft is connected with a winding drum, and the winding drum realizes the lifting of a lifting appliance connected with the winding drum through a winding steel wire rope.
As shown in fig. 4, the speed reducer is a straight-line-shaped large speed reducer, specifically, the inside of the speed reducer is composed of two sets of multi-stage transmission gear sets arranged in central symmetry, and the middle of the two sets of low-speed gear sets are connected by an idler 481, so that the two sets of transmission chains are completely synchronous.
The winding drum is a four-connection winding drum 47, and two sets of idle wheels at low speed in the linear large speed reducer are connected to realize the angular speed synchronization of two four-connection winding drum groups.
As shown in fig. 5, the lifting mechanism of the spreader includes a reel, a pulley block, a balance arm, and a wire rope winding system disposed on the balance arm, wherein the pulleys of the pulley block are disposed on the balance arm 45 and the hook beam, and the wire rope winding system bypasses the pulleys and the reel on the pulley block. The hoisting mechanism is provided with two sets of transmission systems, and each set of transmission system is assembled by hanging a set of hook beam. When the lifting appliance works, each set of transmission system transmits torque to the high-speed shaft of the speed reducer through the motor driving coupler and the transmission shaft, the internal gear of the speed reducer is meshed to transmit the torque to the low-speed four-connection winding drum group, the lifting appliance is lifted and descended through the operation of the four-connection winding drum group, the pulley group comprises a fixed pulley group 46 and a movable pulley group 55, the steel wire rope winding system bypasses the fixed pulley group, and the movable pulley group is installed on the lifting appliance.
As shown in fig. 6(a) and (b), the hanger is composed of two sets of identical hook beams which are not directly connected, and comprises a plate hook, a fork element 52, a hook beam 53 and a heat insulation plate 54, wherein the fork element is fixedly connected to the bottom of the hook beam, and the plate hook is hinged on the fork element. The heat shield is used for preventing heat radiation and is arranged on a lower cover plate of a hook beam, and in the embodiment, two first plate hooks 51 and two second plate hooks 56 are assembled on one hook beam.
Two brakes 42 are provided for each drive system. The lifting mechanism comprises four brakes, and a single brake can brake the load of the whole mechanism; when any one transmission system is in a failure state, the other transmission system can complete the working cycle of the mechanism.
The utility model also discloses a crane applying the hoisting mechanism, which comprises a bridge frame 1, a trolley 2, a cart running mechanism 3, a hoisting mechanism 4 of the double-sling crane and a sling 5, wherein the hoisting mechanism of the double-sling crane is arranged on the trolley. The two lifting appliances are not directly connected and are not influenced by load eccentricity; the lifting mechanism is rigidly connected with the double lifting tools to control the double lifting tools to rise and fall synchronously, and the two sets of transmission systems can work independently under the fault state of any one transmission system.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a hoisting mechanism of two hoist cranes, its characterized in that includes the reduction gear and connects two sets of transmission system in the reduction gear both sides, transmission system is including being close to the reduction gear low-speed axle of reduction gear and the reduction gear high-speed axle of keeping away from the reduction gear center, epaxial actuating system of connecting of reduction gear high-speed, including motor and transmission shaft, the transmission shaft passes through the shaft coupling and links to each other with the reduction gear high-speed axle, is connected with the reel on the reduction gear low-speed axle, the reel realizes the lift rather than the hoist that links to each other through coiling wire rope.
2. A hoisting mechanism of a double-crane according to claim 1, wherein the speed reducer is a linear large speed reducer, specifically, the inside of the speed reducer is composed of two sets of multi-stage transmission gear sets arranged in central symmetry, and the two sets of low-speed gear sets are connected by an idler.
3. A hoisting mechanism of a double hoist crane as claimed in claim 1, wherein the drum is a quadruple drum.
4. The hoisting mechanism of a double-crane according to claim 1, wherein the hoisting mechanism of the crane comprises a winding drum, a pulley block, a balance arm and a wire rope winding system arranged on the balance arm, wherein the pulleys of the pulley block are arranged on the balance arm and a hook beam, the wire rope winding system bypasses the pulleys and the winding drum on the pulley block, each transmission system transmits torque to a high-speed shaft of the speed reducer by a motor-driven coupling and a transmission shaft during operation, gears inside the speed reducer are meshed, and then the torque is transmitted to a low-speed quadruplex winding drum group, and the quadruplex winding drum group is operated to realize the lifting and the descending of the crane.
5. A hoisting mechanism of a double-spreader crane as claimed in claim 1, wherein the spreader is assembled by two sets of identical hook beams without direct connection, and comprises a plate hook, a fork member, a hook beam and a heat insulation plate, the fork member is fixedly connected to the bottom of the hook beam, and the plate hook is hinged to the fork member.
6. A hoisting mechanism for a dual hoist crane according to claim 1 wherein two brakes are provided for each set of drive systems.
7. A crane, comprising the hoisting mechanism of any one of claims 1 to 6, and further comprising a bridge frame, a trolley, a cart running mechanism and a spreader, wherein the hoisting mechanism of the double-spreader crane is arranged on the trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122351241.9U CN215854727U (en) | 2021-09-27 | 2021-09-27 | Hoisting mechanism of double-sling crane and crane using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122351241.9U CN215854727U (en) | 2021-09-27 | 2021-09-27 | Hoisting mechanism of double-sling crane and crane using same |
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| Publication Number | Publication Date |
|---|---|
| CN215854727U true CN215854727U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122351241.9U Active CN215854727U (en) | 2021-09-27 | 2021-09-27 | Hoisting mechanism of double-sling crane and crane using same |
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| CN (1) | CN215854727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697685A (en) * | 2021-09-27 | 2021-11-26 | 大连华锐重工起重机有限公司 | Hoisting mechanism of double-sling crane and crane |
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2021
- 2021-09-27 CN CN202122351241.9U patent/CN215854727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697685A (en) * | 2021-09-27 | 2021-11-26 | 大连华锐重工起重机有限公司 | Hoisting mechanism of double-sling crane and crane |
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