CN103449322B - Crane - Google Patents
Crane Download PDFInfo
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- CN103449322B CN103449322B CN201310424543.1A CN201310424543A CN103449322B CN 103449322 B CN103449322 B CN 103449322B CN 201310424543 A CN201310424543 A CN 201310424543A CN 103449322 B CN103449322 B CN 103449322B
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- suspension hook
- gripper
- loading trolley
- hoisting crane
- multiple gripper
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Abstract
The invention provides a crane. The crane comprises a loading trolley (10), a lifting hook (20) and a locking structure (40), wherein the lifting hook (20) is arranged below the loading trolley (10) and is movable in the vertical direction; the locking structure (40) is arranged on the loading trolley (10); when the lifting hook moves towards the loading trolley (10) to a first position, the locking structure (40) is locked and matched with the lifting hook (20) to prevent the lifting hook (20) from falling. According to the technical scheme provided by the invention, the lifting hook can be prevented from falling when the lifting hook impacts the loading trolley and breaks the lifting rope, thereby enhancing the safety performance of the crane.
Description
Technical field
The present invention relates to construction machinery and equipment, in particular to a kind of hoisting crane.
Background technology
In tower crane; connected by lifting rope between loading trolley and suspension hook; when operator's misoperation or when occurring controlling fault; can occur in suspension hook uphill process; do not slow down in time when entering minimum safe distance and stop the action that hoists, causing suspension hook to continue to rise and with the phenomenon of huge inertia impact loading trolley, lifting rope often can sever by this impulsive force; cause suspension hook to fall, easily safety misadventure occurs.As depicted in figs. 1 and 2, for the moment that suspension hook 20 ' is rushed to summit, position relationship between loading trolley 10 ' and suspension hook 20 ', now the upper side of suspension hook 20 ' touch the exit skirt top board 12 ' of loading trolley 10 ', owing to there is no locking relation between the two, once lifting rope is severed, suspension hook 20 ' can fall earthward.
Summary of the invention
The present invention aims to provide a kind of hoisting crane, can prevent suspension hook from falling at suspension hook impact loads dolly when severing lifting rope.
To achieve these goals, according to an aspect of the present invention, provide a kind of hoisting crane, comprising: loading trolley; And suspension hook, be vertically arranged at the below of loading trolley movingly; Hoisting crane also comprises locking structure, and locking structure is arranged on loading trolley, and when suspension hook moves to primary importance to the direction near loading trolley, locking structure coordinates with suspension hook locking, drops to prevent suspension hook.
Further, locking structure comprises: holding part, is arranged on loading trolley, and when suspension hook moves to primary importance, holding part coordinates with suspension hook locking; And actuation part, be connected with holding part, order about holding part and coordinate with suspension hook locking.
Further, holding part comprises multiple gripper, and multiple gripper is separately positioned on loading trolley, and multiple gripper has relieving state and rounding state; When holding part coordinates with suspension hook locking, multiple gripper is positioned at rounding state, and suspension hook abuts with multiple gripper.
Further, holding part also comprises support, and support is fixed on loading trolley; Each gripper in multiple gripper connects bearing pin by first and is connected with support, passes through vertically movable second connection pinned connection between multiple gripper; Second connects bearing pin when vertically moving, and first connects bearing pin or second connects bearing pin and arrange movingly along the chute of gripper, is positioned at relieving state or rounding state to make multiple gripper.
Further, actuation part comprises operating parts, and operating parts to be vertically arranged on movingly on loading trolley and to be positioned at the top of suspension hook, and operating parts is connected pinned connection with second, drives second to connect bearing pin and vertically moves.
Further, operating parts is control lever, and control lever is located on loading trolley; Actuation part also comprises spring, and spring is set on control lever regularly, spring in the raw or compressive state time, multiple gripper is positioned at rounding state, and when spring is in extended state, multiple gripper is positioned at relieving state.
Further, suspension hook has protuberance, and when suspension hook moves to primary importance, multiple gripper abuts with protuberance.
Further, protuberance has frustum; Gripper has hook portion, and when gripper is positioned at rounding state, frustum is pressed in hook portion.
Further, hook portion has the guiding surface adapted with the side of frustum.
Further, locking structure is positioned at the top of the exit skirt top board of loading trolley, and when multiple gripper coordinates with protuberance locking, protuberance is located on exit skirt top board.
Apply technical scheme of the present invention, loading trolley arranges locking structure, when suspension hook elliptical gear loading trolley, locking structure pins suspension hook thus realizes coordinating with the locking of suspension hook, even if lifting rope is severed, owing to there being locking structure to pin suspension hook, suspension hook also can not free fall, prevent safety misadventure, improve the safety performance of hoisting crane.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of suspension hook according to prior art and loading trolley;
Fig. 2 shows the A place enlarged drawing according to Fig. 1;
Fig. 3 shows the schematic diagram of suspension hook and loading trolley according to an embodiment of the invention;
Fig. 4 shows the B place enlarged drawing according to Fig. 3;
Fig. 5 shows the schematic diagram that locking structure according to an embodiment of the invention coordinates with suspension hook locking;
Fig. 6 shows the schematic diagram of locking structure according to an embodiment of the invention;
Fig. 7 shows the schematic diagram of the gripper of locking structure according to an embodiment of the invention;
Fig. 8 shows the schematic diagram of suspension hook according to an embodiment of the invention; And
Fig. 9 shows the schematic diagram of the protuberance of suspension hook according to an embodiment of the invention.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Fig. 3 to Fig. 9, according to embodiments of the invention, provide a kind of hoisting crane, comprise loading trolley 10, suspension hook 20 and locking structure 40, wherein loading trolley 10 is arranged on the crane arm of hoisting crane, and can along the length direction adjustment position of crane arm, suspension hook 20 is connected to the below of loading trolley 10 by lifting rope, by the folding and unfolding of lifting rope, motion vertically can be done relative to loading trolley 10, locking structure 40 is arranged on loading trolley 10, for coordinating with suspension hook 20 locking when suspension hook 20 moves up to primary importance, to pin suspension hook 20.When operator's misoperation or appearance control fault, make suspension hook 20 in the direction motion process to close loading trolley 10, do not slow down in time when entering minimum safe distance and stop the action that hoists, when causing impact loads dolly 10 and sever lifting rope, locking structure 40 can prevent suspension hook 20 free fall, avoid safety misadventure occurs, improve the safety performance of hoisting crane.
Existing hoisting crane does not generally arrange locking structure between loading trolley 10 and suspension hook 20, once suspension hook 20 is rushed to summit and severed lifting rope, suspension hook 20 meeting free fall, easily occurs safety misadventure.The present invention effectively can avoid the generation of this phenomenon, even if suspension hook 20 is rushed to summit and severed lifting rope, suspension hook 20 also can stop at the below of loading trolley 10 under the locking effect of locking structure, can not free fall.
In conjunction with see Fig. 5 to Fig. 7, locking structure 40 comprises holding part 41 and actuation part 42, wherein holding part 41 is arranged on loading trolley 10, holding part 41 has open mode and clamp position, when holding part 41 is positioned at open mode, can decontrol suspension hook 20, it is made normally to hang cargo, when holding part 41 is positioned at clamp position, the suspension hook 20 that rises to primary importance can be clamped and coordinate with suspension hook 20 locking, preventing suspension hook 20 free fall.Actuation part 42 is connected with holding part 41, is positioned at open mode or clamp position for ordering about holding part 41, thus realizes holding part 41 and coordinate with the locking of suspension hook 20 or decontrol suspension hook 20.
Preferably, holding part 41 comprises support 411 and gripper 412, on the crossbeam 11 that its medium-height trestle 411 is fixed on loading trolley 10 and along the direction away from crossbeam 11 to downward-extension, gripper 412 has multiple, each gripper 412 connects bearing pin 413 respectively by one first and is hinged on support 411, and can rotate around hinge-point, gripper 412 is made to be arranged on loading trolley 10 by support 411, each gripper 412 has chute 414 respectively, connect bearing pin 417 by second between multiple gripper 412 to connect, second connects bearing pin 417 is also located in the chute 414 of each gripper 412 simultaneously.
Actuation part 42 comprises control lever 422 and spring 421, wherein control lever 422 to be located in the first through hole of the crossbeam 11 of loading trolley 10 and to be positioned at the top of suspension hook 20, control lever 422 can vertically up-and-down movement, second connects bearing pin 417 is fixed on control lever 422, can with the motion of control lever 422 up-and-down movement, spring 421 to be set in regularly on control lever 422 and to be positioned at the downside of the crossbeam of loading trolley 10.
Annexation between holding part 41 and actuation part 42 is: in an initial condition, spring 421 is in the state of nature do not stressed to locking structure 40, and spring 421 neither extends and also do not compress, and now multiple gripper 412 is in rounding state; When the downward vertical motion of control lever 422, the stressed elongation of spring 421, second connects bearing pin 417 moves downward along with the motion of control lever 422, also moves along the chute 414 of each gripper 412 simultaneously, drive gripper 412 to rotate around its hinge-point, make multiple gripper 412 be in relieving state; When control lever 422 upwards vertical motion time, spring 421 forced compression, second connection bearing pin 417 is upward movement along with the motion of control lever 422, also moves along the chute 414 of each gripper 412 simultaneously, drives gripper 412 to rotate around its hinge-point, multiple gripper 412 is made to be in rounding state, can clamp suspension hook 20, now, the displacement of control lever 422 upward movement is larger, the thrust of spring 421 is larger, and the gripping power simultaneously between multiple gripper 412 and suspension hook 20 is larger.
Certainly, here also can connect bearing pin 413 by first is located in the chute 414 of gripper 412, multiple gripper 412 connects bearing pin 417 around second and rotates, when second connects bearing pin 417 up-and-down movement, first connects bearing pin 413 slides in chute 414, also can realize relieving or the gathering of multiple gripper 412.Or chute 414 is connected bearing pin 413 or second and connects the structure that the slip cooperating relationship between bearing pin 417 also can be able to make multiple gripper 412 draw in or decontrol with other and substitute with first.
Preferably, spring 421 is fixed on control lever 422 by adapter plate 424 and locating dowel pin 423, wherein adapter plate 424 is set on control lever 422, spring 421 is set on control lever 422, one end is fixed on adapter plate 424, crossbeam 11 from the other end to loading trolley 10 extend between, adapter plate 424 is fixed on control lever 422 by locating dowel pin 423.Under normal condition, spring 432 freely stretches, not by External Force Acting, now multiple gripper 412 draws in, when control lever 422 upward movement, drive adapter plate 424 Compress Spring 421, spring 421 can play the effect of buffering, the impact from suspension hook 20 that reduction locking structure 40 and loading trolley 10 are subject to, the service life of elongate member.
Certainly, the effect that the drive gripper 412 that control lever 422 plays draws in or decontrols also can substitute with other operating parts, as long as gripper 412 can be driven to move, such as, connecting rod mechanism can be utilized to play the object driving gripper 412 to rotate.
Preferably, when initially installing, control lever 422 is provided with detouchable locating dowel pin 43, locating dowel pin 43 is just positioned at the upside of the crossbeam 11 of loading trolley 10, can prevent from, to control lever 422 maloperation, when crane job, locating dowel pin 43 being pulled down, after hoisting crane stops operation, then locating dowel pin 43 is contained on control lever 422.
In conjunction with see Fig. 7 to Fig. 9, conveniently gripper 412 clamps, and the top of suspension hook 20 has protuberance 21, when suspension hook 20 moves to primary importance, protuberance 21 to be located in the second through hole of the exit skirt top board 12 of loading trolley 10 and jack-up control lever 422, drives gripper 412 to draw in, clamping protuberance 21.
Preferably, protuberance 21 top has frustum 211, the cross-sectional plane of frustum 211 increases gradually along direction from top to bottom, when gripper 412 clamps protuberance 21, the hook portion 416 of the pawl point of gripper 412 is supported on the lower surface of frustum 211, make frustum 211 hang in hook portion 416, prevent suspension hook 20 from dropping further.
Preferably, hook portion 416 has guiding surface 415, and the direction of tilt of guiding surface 415 and the side of frustum 211 adapt, and protuberance 21 can be made accurately to enter in uphill process between multiple gripper 412, avoid the path of motion of protuberance 21 to occur deviation.
The movement relation of hoisting crane of the present invention is:
When suspension hook 20 moves up to primary importance, protuberance 21 can first by the second through hole on exit skirt top board 12, after continuing rising, the frustum 211 on protuberance 21 top encounters gripper 412 and under the effect of guiding surface 415, gripper 412 is pushed open to both sides, multiple gripper 412 is made to be in relieving state, the second connection bearing pin 417 can be made in gripper 412 rotation process to move downward, control lever 422 is driven to move downward, extension spring 421 simultaneously, in the process, gripper 412 remains with the protuberance 21 of suspension hook 20 and contacts, when the protuberance 21 of suspension hook 20 continues upward movement until when the downside of frustum 211 of protuberance 21 contacts with the upper side of the hook portion 416 of gripper 412, protuberance 21 enters completely and encloses in the grasping part of formation between multiple gripper 412, now, protuberance 21 does not also have the lower end of operating of contacts bar 422, but because spring 421 has the trend of getting back to state of nature, under the effect of this trend, spring 421 changes from extended state to state of nature, drive control lever 422 upward movement, and then make the second connection bearing pin 417 upward movement, make rounding state when again getting back to initial installation between multiple gripper 412, if now suspension hook 20 stops rising, then the hook portion 416 of multiple gripper 412 can be supported on the downside of frustum 211, clamp protuberance 21, suspension hook 20 cannot be dropped.If inertia makes suspension hook 20 continue to rise, protuberance 21 will encounter the lower end of control lever 422, control lever 422 upward movement drives second to connect bearing pin 417 and slides in the chute 414 of gripper 412, thus drive multiple gripper 412 to draw in further, clamp protuberance 21 more tightly, and the power that suspension hook 20 upwards impacts is larger, gripping power between multiple gripper 412 and protuberance 21 is larger, lifting rope is caused to rupture even if suspension hook 20 is rushed to summit, suspension hook 20 is also unlikely to fall because of the fracture of lifting rope, avoids the generation of safety misadventure.
When generation of rushing to summit, after suspension hook 20 is locked by locking structure 40, suspension hook 20 is connected with loading trolley 10, there is not the danger of falling.After operating personal finishes changing the lifting rope of fracture, only need directly to lower pressing operations bar 422 on loading trolley 10, control lever 422 moves downward, second connects bearing pin 417 slides in the chute 414 of gripper 412, force gripper 412 to connect bearing pin 413 around first to rotate, gripper 412 opens to both sides and is in relieving state, and unclamp protuberance 21, suspension hook 20 is automatically separated from loading trolley 10.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
1, free fall after lifting rope is prevented from suspension hook from rushing to summit severing;
2, the safety performance of hoisting crane is improved;
3, adopt mechanical mechanism, its each part relative motion relation is determined, has reliable, safe and automatic advantage.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a hoisting crane, comprising:
Loading trolley (10); And
Suspension hook (20), is vertically arranged at the below of described loading trolley (10) movingly;
It is characterized in that, described hoisting crane also comprises locking structure (40), described locking structure (40) is arranged on described loading trolley (10), when described suspension hook (20) moves to primary importance to the direction near described loading trolley (10), described locking structure (40) coordinates with described suspension hook (20) locking, drops to prevent described suspension hook (20).
2. hoisting crane according to claim 1, is characterized in that, described locking structure (40) comprising:
Holding part (41), is arranged on described loading trolley (10), and when described suspension hook (20) moves to described primary importance, described holding part (41) coordinates with described suspension hook (20) locking; And
Actuation part (42), is connected with described holding part (41), orders about described holding part (41) and coordinates with described suspension hook (20) locking.
3. hoisting crane according to claim 2, is characterized in that,
Described holding part (41) comprises multiple gripper (412), described multiple gripper (412) is separately positioned on described loading trolley (10), and described multiple gripper (412) has relieving state and rounding state;
When described holding part (41) coordinates with described suspension hook (20) locking, described multiple gripper (412) is positioned at described rounding state, and described suspension hook (20) abuts with described multiple gripper (412).
4. hoisting crane according to claim 3, is characterized in that,
Described holding part (41) also comprises support (411), and described support (411) is fixed on described loading trolley (10);
Each gripper (412) in described multiple gripper (412) connects bearing pin (413) by first and is connected with described support (411), is connected between described multiple gripper (412) by vertically movable second connection bearing pin (417);
When described second connection bearing pin (417) is vertically moved, described first connects bearing pin (413) or described second connects bearing pin (417) and arranges movingly along the chute (414) of described gripper (412), is positioned at described relieving state or described rounding state to make described multiple gripper (412).
5. hoisting crane according to claim 4, it is characterized in that, described actuation part (42) comprises operating parts, described operating parts is vertically arranged on described loading trolley (10) movingly and goes up and be positioned at the top of described suspension hook (20), described operating parts is connected bearing pin (417) with described second and connects, and drives described second to connect bearing pin (417) and vertically moves.
6. hoisting crane according to claim 5, is characterized in that,
Described operating parts is control lever (422), and described control lever (422) is located on described loading trolley (10);
Described actuation part (42) also comprises spring (421), described spring (421) is set on described control lever (422) regularly, described spring (421) in the raw time, described multiple gripper (412) is positioned at described rounding state, when described spring (421) is in extended state, described multiple gripper (412) is positioned at described relieving state.
7. hoisting crane according to claim 3, it is characterized in that, described suspension hook (20) has protuberance (21), and when described suspension hook (20) moves to described primary importance, described multiple gripper (412) abuts with described protuberance (21).
8. hoisting crane according to claim 7, is characterized in that,
Described protuberance (21) has frustum (211);
Described gripper (412) has hook portion (416), and when described gripper (412) is positioned at described rounding state, described frustum (211) is pressed in described hook portion (416).
9. hoisting crane according to claim 8, is characterized in that, described hook portion (416) has the guiding surface (415) adapted with the side of described frustum (211).
10. hoisting crane according to claim 7, it is characterized in that, described locking structure (40) is positioned at the top of the exit skirt top board (12) of described loading trolley (10), when described multiple gripper (412) coordinates with described protuberance (21) locking, described protuberance (21) is located on described exit skirt top board (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310424543.1A CN103449322B (en) | 2013-09-17 | 2013-09-17 | Crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310424543.1A CN103449322B (en) | 2013-09-17 | 2013-09-17 | Crane |
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| Publication Number | Publication Date |
|---|---|
| CN103449322A CN103449322A (en) | 2013-12-18 |
| CN103449322B true CN103449322B (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310424543.1A Active CN103449322B (en) | 2013-09-17 | 2013-09-17 | Crane |
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| CN (1) | CN103449322B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077950A (en) * | 2019-06-05 | 2019-08-02 | 葫芦岛天力工业有限公司 | A kind of opening-closing shaft operation calibrating installation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011236027A (en) * | 2010-05-12 | 2011-11-24 | Kobelco Cranes Co Ltd | Hook holder and hook device of wheel crane |
| CN202164065U (en) * | 2011-04-02 | 2012-03-14 | 彭宝安 | Rope breakage protecting device for tower crane |
| CN102923591A (en) * | 2011-08-09 | 2013-02-13 | 长沙桑尼重工机械有限公司 | Automatic hook-retracting device of lifting hook of intelligent lorry crane |
| CN203638992U (en) * | 2013-12-30 | 2014-06-11 | 宁夏建工集团有限公司 | Break-proof rope device of tower-type crane |
-
2013
- 2013-09-17 CN CN201310424543.1A patent/CN103449322B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011236027A (en) * | 2010-05-12 | 2011-11-24 | Kobelco Cranes Co Ltd | Hook holder and hook device of wheel crane |
| CN202164065U (en) * | 2011-04-02 | 2012-03-14 | 彭宝安 | Rope breakage protecting device for tower crane |
| CN102923591A (en) * | 2011-08-09 | 2013-02-13 | 长沙桑尼重工机械有限公司 | Automatic hook-retracting device of lifting hook of intelligent lorry crane |
| CN203638992U (en) * | 2013-12-30 | 2014-06-11 | 宁夏建工集团有限公司 | Break-proof rope device of tower-type crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103449322A (en) | 2013-12-18 |
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