CN202379629U - Super lifting device and crane - Google Patents
Super lifting device and crane Download PDFInfo
- Publication number
- CN202379629U CN202379629U CN2011205559521U CN201120555952U CN202379629U CN 202379629 U CN202379629 U CN 202379629U CN 2011205559521 U CN2011205559521 U CN 2011205559521U CN 201120555952 U CN201120555952 U CN 201120555952U CN 202379629 U CN202379629 U CN 202379629U
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- steel rope
- super lifting
- movable pulley
- lifting device
- crane
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Abstract
The utility model relates to the technical field of cranes and discloses a super lifting device that comprises a rear balancing device, a front balancing device and a super lifting mast, wherein the front balancing device comprises a steel wire rope and a hoist arranged on the super lifting mast, and further comprises a movable pulley mechanism; one end of the steel wire rope is wound around the hoist, while the other end of the steel wire rope is fixedly arranged; the steel wire rope is wound around the movable pulley device; the front end of the movable pulley mechanism is connected with the head of a tail arm of a lifting boom; and the multiplying power of the steel wire rope between the movable pulley mechanism and the hoist is no less than two. The super lifting device does not need an increase in the diameter of the steel wire rope or in the winding space of the steel wire rope on a winding drum of the hoist, does not change the broad band size of the whole crane. Besides, the fixing and winding of the steel wire rope are relatively easy, and the front balancing device has little difficulty in retracting and releasing operations. The utility model also discloses a wheeled crane with the super lifting device.
Description
Technical field
The utility model design hoisting crane technical field relates in particular to a kind of super lifting device.The utility model also relates to a kind of hoisting crane with above-mentioned super lifting device.
Background technology
Along with wheel crane develops to the kiloton line of production,, on wheel crane, install super lifting device usually additional in order to improve the lifting performance under the big brachium operating mode.
Thereby super lifting device is a kind of crane arm basic arm front end that is installed in is used to reduce the device that the crane arm distortion improves hoisting capacity; Parts such as super lifting device generally includes the forward horizontal stand device, surpassed mast, back balance device; Surpassed mast can about launch to be " Y " type; The forward horizontal stand device generally includes elevator, steel rope, fixing the surpassing on the mast of elevator, and an end of steel rope is around on the said elevator; The other end is fixed on the minor details arm of crane arm, and a part of force transmission that produces when super lifting device is used for crane arm worked is to having surpassed mast.
Below in conjunction with accompanying drawing the principle of work of super lifting device in the prior art is carried out brief account.
Please referring to Fig. 1, Fig. 2, the structural representation when Fig. 1 is a kind of wheel crane in the prior art in running order, the plan structure scheme drawing when Fig. 2 is in off working state for wheel crane among Fig. 1.
As shown in Figure 1, this wheel crane comprises crane arm 1, super lifting device, hoisting crane chassis 2, and crane arm 1 can be made up of along the flexible telescopic boom of crane arm 1 length direction basic arm and some joints; Super lifting device comprises forward horizontal stand device 4 ', has surpassed mast 3, back balance device 5.
When wheel crane is worked under super lifting working condition; In order to reduce the distortion of crane arm 1; Forward horizontal stand device 4 ' will apply an application force to crane arm 1; This application force is through surpassing mast 3 transmission and by back balance device 5 balances, therefore, the load-carrying capacity and the safety performance of forward horizontal stand device 4 ' being had relatively high expectations; Forward horizontal stand device 4 ' adopts the steel cord structure of single multiplying power, and an end of steel rope is around in and is fixed on the elevator 6 that has surpassed on the mast 3, and the other end of steel rope is connected with the head of crane arm 1 minor details arm; When super lifting device during, steel rope is reclaimed and is fixed on the inboard that has surpassed mast 3 through elevator 6 in off working state.
When hoisting crane develops into kiloton; The lifting performance of wheel crane significantly promotes, and is also higher to the load-carrying capacity and the safety system requirement of forward horizontal stand device 4 ', as continuing to adopt the steel cord structure of single multiplying power; For load-carrying capacity and the safety performance that guarantees forward horizontal stand device 4 '; Certainly will will increase the diameter of steel rope, and then cause the space that the steel rope on the reel of elevator 6 twines to become big, and the increase of kiloton wheel crane complete vehicle structure; The particularly restriction of width dimensions makes that being arranged in the outermost reel arrangement space that surpassed of car load does not have and can't amplify again; After wirerope diameter increases,, make that the retractable operation difficulty of forward horizontal stand device 4 ' is bigger for the fixing and winding of the steel rope very difficulty that becomes.
Therefore, how under the situation of the diameter that does not increase steel rope, guarantee the load-carrying capacity and the safety performance of the forward horizontal stand device of super lifting device, become the technical barrier that those skilled in the art need to be resolved hurrily.
The utility model content
First purpose of the utility model provides a kind of super lifting device, and under the situation of the diameter that does not increase steel rope, this super lifting device can guarantee the load-carrying capacity and the safety performance of forward horizontal stand device.Second purpose of the utility model provides a kind of wheel crane with above-mentioned super lifting device.
In order to realize above-mentioned first purpose; The utility model provides a kind of super lifting device to comprise back balance device, forward horizontal stand device, surpassed mast; Said forward horizontal stand device comprises steel rope, is located at the said elevator that has surpassed on the mast, and said forward horizontal stand device also comprises movable pulley mechanism, and an end of said steel rope is around in said elevator; The other end of said steel rope fixedly installs, and this steel rope is around in said movable pulley device; The front end of said movable pulley mechanism is connected with the minor details arm head portion of crane arm, and the multiplying power of the steel rope between said movable pulley mechanism and the said elevator is no less than twice.
Preferably, said movable pulley mechanism comprises a movable pulley, and the multiplying power of the steel rope between said movable pulley and the said elevator is a twice.
Preferably, also comprise the pulley bracket that is used for fixing the said movable pulley device after the recovery, said pulley bracket is fixed on the said mast front end that surpassed.
Preferably, the rear end of said pulley bracket and the said front end that has surpassed mast are fixed, and the front end of said pulley bracket comprises two supporting plates that are arranged side by side, and the front end of said supporting plate is provided with the concave shaped opening of the sheave shaft that is used to take in said movable pulley mechanism.
Preferably, the other end of said steel rope is fixed on the said elevator.
Preferably, the other end of said steel rope is fixed on said having surpassed on the mast.
The super lifting device that the utility model provides comprises back balance device, forward horizontal stand device, has surpassed mast; Said forward horizontal stand device comprises steel rope, is located at the said elevator that has surpassed on the mast; Said forward horizontal stand device also comprises movable pulley mechanism; One end of said steel rope is around in said elevator, and the other end of said steel rope fixedly installs, and this steel rope is around in said movable pulley device; The front end of said movable pulley mechanism is connected with the minor details arm head portion of crane arm, and the multiplying power of the steel rope between said movable pulley mechanism and the said elevator is no less than twice.
The forward horizontal stand device of this super lifting device is by being no less than the two-fold steel rope and movable pulley mechanism forms, and when super lifting device was in running order, multiplying power was no less than the two-fold steel rope and simultaneously crane arm is applied application force; The application force that steel rope bore is less; Even the therefore hoisting crane of kiloton, multiplying power is no less than the two-fold steel rope under the less situation of diameter, also can satisfy the requirement of the load-carrying capacity and the safety performance of forward horizontal stand device; Compared with prior art; Need not increase the diameter of steel rope, need not increase the winding space of the steel rope on the reel of elevator yet, can not change the broadband size of hoisting crane car load; And steel rope fixing and twine than be easier to, the retractable operation difficulty of forward horizontal stand device is less.
In order to realize above-mentioned second purpose; The utility model also provides a kind of wheel crane; This wheel crane comprises crane arm, hoisting crane chassis, super lifting device; Said super lifting device is above-mentioned super lifting device, and an end of the steel rope of this super lifting device is connected with the minor details arm head portion of said crane arm.Because above-mentioned super lifting device has above-mentioned technique effect, the wheel crane with this super lifting device also should possess the corresponding techniques effect.
Description of drawings
Structural representation when Fig. 1 is a kind of wheel crane in the prior art in running order;
Plan structure scheme drawing when Fig. 2 is in off working state for wheel crane among Fig. 1;
Fig. 3 is the structural representation of a kind of specific embodiment of the super lifting device that the utility model provided;
Structural representation when Fig. 4 is in off working state for super lifting device among Fig. 3;
Fig. 5 is the structural representation of Fig. 3 middle pulley support;
Wherein, among Fig. 1-Fig. 5:
The specific embodiment
In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Please referring to Fig. 3-Fig. 5, Fig. 3 is the structural representation of a kind of specific embodiment of the super lifting device that the utility model provided; Structural representation when Fig. 4 is in off working state for super lifting device among Fig. 3; Fig. 5 is the structural representation of Fig. 3 middle pulley support.
Like Fig. 3, shown in Figure 4; The super lifting device that the utility model provides comprises back balance device 5, forward horizontal stand device, has surpassed mast 3; Said forward horizontal stand device comprises steel rope 7, movable pulley mechanism, is located at the said elevator 6 that has surpassed on the mast 3, and elevator 6 is used for the said steel rope 7 of folding and unfolding, and an end of said steel rope 7 is around in said elevator 6; The other end of said steel rope 7 fixedly installs, and this steel rope 7 is around in said movable pulley device; The front end of said movable pulley mechanism is connected with the minor details arm head portion of crane arm 1, and the multiplying power of the steel rope 7 between said movable pulley mechanism and the said elevator 6 is no less than twice.
The forward horizontal stand device of this super lifting device is formed with movable pulley mechanism by being no less than two-fold steel rope 7, and when super lifting device was in running order, multiplying power was no less than two-fold steel rope 7 and simultaneously crane arm 1 is applied application force; The application force that steel rope 7 is born is less; Even the therefore hoisting crane of kiloton, multiplying power is no less than two-fold steel rope 7 under the less situation of diameter, also can satisfy the requirement of the load-carrying capacity and the safety performance of forward horizontal stand device; Compared with prior art; Need not increase the diameter of steel rope 7, need not increase the winding space of the steel rope 7 on the reel of elevator 6 yet, can not change the broadband size of hoisting crane car load; And steel rope 7 fixing and twine than be easier to, the retractable operation difficulty of forward horizontal stand device is less.
In the preferred scheme, said movable pulley mechanism comprises a movable pulley 8, and the multiplying power of the steel rope 7 between said movable pulley 8 and the said elevator 6 is a twice.When super lifting device is in running order; The steel rope 7 of two multiplying powers applies application force to crane arm 1 simultaneously; The application force that steel rope 7 is born is less, under the situation of the requirement of load-carrying capacity that satisfies the forward horizontal stand device and safety performance, can correspondingly reduce the radial dimension of steel rope 7.
In the concrete scheme; One end of said steel rope 7 is around on the said elevator 6; Realize the folding and unfolding of steel rope 7 by forward and reverse rotation of the reel of elevator 6; Steel rope 7 is walked around after the said movable pulley 8, and the other end of steel rope 7 can be fixed on the said elevator 6, also can be fixed on said having surpassed on the mast 3; The utility model is not done qualification to the fixed position of the other end of said steel rope 7, allly can fix, make steel rope 7 and the scheme that said movable pulley 8 forms the movable pulley transmissions all should be in the protection domain of the utility model the other end of said steel rope 7.
When super lifting device is not worked, as shown in Figure 4, can be through auxiliary hanging device handling movable pulley 8; So that the withdrawal of movable pulley 8, under the effect of elevator 6, but the reel of steel rope 7 elevators 6 is regained; In the preferred scheme,, can pulley bracket 9 be set at the front end that has surpassed mast 3 for the ease of regaining movable pulley 8 fast; Pulley bracket 9 can be used for taking in the movable pulley 8 after the recovery, after movable pulley 8 is regained, can be fixed in the pulley bracket 9.
In the concrete scheme; As shown in Figure 5; The rear end of said pulley bracket 9 and the said front end that has surpassed mast 3 are fixed, and the front end of said pulley bracket 9 comprises two supporting plate 9-1 that are arranged side by side, and has certain clearance space between two supporting plate 9-1; The pulley body of movable pulley 8 can be contained in this clearance space, and the front end of said supporting plate 9-1 is provided with the concave shaped opening of the sheave shaft that is used to take in said movable pulley mechanism.
When auxiliary hanging device has extremely surpassed the pulley bracket 9 of mast 3 front ends with movable pulley 8 handlings; Can the pulley body of movable pulley 8 be positioned in two clearance spaces between the supporting plate 9-1; The sheave shaft of movable pulley 8 is stuck in the concave shaped opening of supporting plate 9-1 front end, and then movable pulley 8 is fixed in the pulley bracket 9.
The foregoing description is to be the introduction that example is carried out the utility model with the movable pulley mechanism with a movable pulley 8; The utility model is not limited thereto, and movable pulley mechanism can also comprise the running block that has two movable pulleys 8 at least, correspondingly; The multiplying power of the steel rope 7 between movable pulley mechanism and the elevator 6 also is not limited to twice; Those skilled in the art can be provided with the multiplying power of steel rope 7 as required arbitrarily, further in the scheme, in order to obtain the multiplying power of required steel rope 7; Also can or surpass at elevator 6 one or more fixed pulleys are set on the mast 3, mechanism matches with movable pulley.
The utility model also provides a kind of wheel crane; This wheel crane comprises crane arm, hoisting crane chassis, super lifting device; Said super lifting device is above-mentioned super lifting device, and an end of the steel rope of this super lifting device is connected with the minor details arm head portion of said crane arm.Because above-mentioned super lifting device has above-mentioned technique effect, the wheel crane with this super lifting device also should possess the corresponding techniques effect, no longer is described in detail at this.
The above only is the description of the preferred implementation of utility model; Should be pointed out that finiteness, and objectively have unlimited concrete structure owing to literal expression; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (7)
1. super lifting device; Comprise back balance device, forward horizontal stand device, surpassed mast, said forward horizontal stand device comprises steel rope, is located at the said elevator that has surpassed on the mast, it is characterized in that; Said forward horizontal stand device also comprises movable pulley mechanism; One end of said steel rope is around in said elevator, and the other end of said steel rope fixedly installs, and this steel rope is around in said movable pulley device; The front end of said movable pulley mechanism is connected with the minor details arm head portion of crane arm, and the multiplying power of the steel rope between said movable pulley mechanism and the said elevator is no less than twice.
2. super lifting device according to claim 1 is characterized in that, said movable pulley mechanism comprises a movable pulley, and the multiplying power of the steel rope between said movable pulley and the said elevator is a twice.
3. super lifting device according to claim 2 is characterized in that, also comprises the pulley bracket that is used for fixing the said movable pulley device after the recovery, and said pulley bracket is fixed on the said mast front end that surpassed.
4. super lifting device according to claim 3; It is characterized in that; The rear end of said pulley bracket and the said front end that has surpassed mast are fixed; The front end of said pulley bracket comprises two supporting plates that are arranged side by side, and the front end of said supporting plate is provided with the concave shaped opening of the sheave shaft that is used to take in said movable pulley mechanism.
5. super lifting device according to claim 1 is characterized in that the other end of said steel rope is fixed on the said elevator.
6. super lifting device according to claim 1 is characterized in that the other end of said steel rope is fixed on said having surpassed on the mast.
7. wheel crane; Comprise crane arm, hoisting crane chassis, super lifting device; It is characterized in that said super lifting device is each described super lifting device of claim 1-6, an end of the steel rope of this super lifting device is connected with the minor details arm head portion of said crane arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205559521U CN202379629U (en) | 2011-12-27 | 2011-12-27 | Super lifting device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205559521U CN202379629U (en) | 2011-12-27 | 2011-12-27 | Super lifting device and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202379629U true CN202379629U (en) | 2012-08-15 |
Family
ID=46628146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205559521U Expired - Fee Related CN202379629U (en) | 2011-12-27 | 2011-12-27 | Super lifting device and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202379629U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401888A (en) * | 2014-10-30 | 2015-03-11 | 三一汽车起重机械有限公司 | Super lift apparatus and crane |
| CN106516993A (en) * | 2016-12-20 | 2017-03-22 | 徐州重型机械有限公司 | Multi-fulcrum hooking superlift device and crane |
| CN113401818A (en) * | 2021-07-30 | 2021-09-17 | 湖南三一中型起重机械有限公司 | Super-lifting pulley bracket device, arm support and crane |
-
2011
- 2011-12-27 CN CN2011205559521U patent/CN202379629U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401888A (en) * | 2014-10-30 | 2015-03-11 | 三一汽车起重机械有限公司 | Super lift apparatus and crane |
| CN106516993A (en) * | 2016-12-20 | 2017-03-22 | 徐州重型机械有限公司 | Multi-fulcrum hooking superlift device and crane |
| CN113401818A (en) * | 2021-07-30 | 2021-09-17 | 湖南三一中型起重机械有限公司 | Super-lifting pulley bracket device, arm support and crane |
| WO2023005564A1 (en) * | 2021-07-30 | 2023-02-02 | 湖南三一中型起重机械有限公司 | Super-lift pulley bracket device, arm support and crane |
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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: 20120815 Termination date: 20191227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |