CN220412702U - Balance reuse grading falling hanging device and tower crane - Google Patents

Abstract

The utility model discloses a grading falling off hanging device for balance and a tower crane, the grading falling off hanging device comprises a hanging assembly and an unlocking mechanism, a plurality of movable hanging parts in the hanging assembly respectively comprise a pin shaft part and a driving part, wherein the pin shaft part is sequentially and movably arranged on a balance arm and a balance weight unit from outside to inside, the driving part is bent and extended from the outer end of the pin shaft part, a grading triggering rod of the unlocking mechanism comprises a rod body which is arranged on the inner side of the driving part of the plurality of movable hanging parts and is movably arranged on the balance arm, and a triggering part which is arranged on one side of the rod body facing the driving part, and the traction assembly pulls the grading triggering rod to move according to the lifting state of a lifting arm, so that the triggering part is sequentially abutted with the driving part of at least one movable hanging part in the hanging assembly to push the pin shaft parts of the movable hanging parts to be separated from a balance weight unit one by one.

Description

Balance reuse grading falling hanging device and tower crane

Technical Field

The utility model belongs to the technical field of hoisting equipment, and particularly relates to a balance reuse grading falling-off hanging device and a tower crane.

Background

The tower crane may generally include a tower body and a top mount, which may include a boom for lifting a hoist and a counterweight for counterweight to balance the boom moment. In some large-scale tower crane applications, because the hoisted objects are heavy, the weight of the counterweight used for the counterweight at the side of the balance arm is also heavy, when the hoisted objects fall off, a huge overturning moment is generated on the tower body, and strong impact is generated on the tower body, so that the risk of overturning exists in the tower crane, and therefore, the anti-overturning performance of the tower crane under the sudden unloading working condition needs to be fully considered in the design of the tower crane.

At present, the traditional tower crane generally achieves the aim of improving the anti-overturning performance of the tower crane by adjusting the mass distribution of the whole machine and enhancing the strength of the tower body. However, with the increase of the lifting weight, the mode is difficult to meet the requirement of the anti-overturning performance of the ultra-large tower crane, and particularly under the condition of sudden unloading such as the breakage of a steel wire rope of a hanging load, the instantaneous load born by the suspension arm is changed drastically, huge bending moment impact is generated on the tower body, and the anti-overturning design is more difficult to play an effective role.

Disclosure of Invention

Aiming at the defects or shortcomings, the utility model provides a balance reuse grading falling-off hanging device and a tower crane, and aims to solve the technical problem that the existing anti-overturning design mode is difficult to meet the anti-overturning performance requirement of an ultra-large tower crane.

In order to achieve the above purpose, the utility model provides a balanced reuse grading falling off hanging device, wherein the balanced reuse grading falling off hanging device comprises a hanging component and an unlocking mechanism; the hanging assembly comprises a plurality of movable hanging parts which are sequentially arranged along the length direction of the balance arm, and each movable hanging part comprises a pin shaft part which is sequentially and movably arranged on the balance arm and the balance weight unit in a penetrating manner from outside to inside, and a driving part which is bent and extended from the outer end of the pin shaft part; the unlocking mechanism comprises a traction assembly and a grading trigger rod, wherein the grading trigger rod comprises a rod body arranged on the inner sides of driving parts of a plurality of movable hanging parts and movably arranged on the balance arm and a trigger part arranged on one side of the rod body towards the driving parts, the traction assembly is connected with the tower crane and the rod body and used for pulling the grading trigger rod to move according to the lifting state of the crane arm, and the trigger part is in butt joint with the driving part of at least one movable hanging part in the hanging assembly in sequence so as to push the pin shaft parts of the movable hanging parts to separate from corresponding balancing weight units one by one.

In the embodiment of the utility model, the number of the trigger parts is a plurality, the trigger parts are sequentially arranged at intervals along the length direction of the rod body, the rod body between any two trigger parts which are adjacently arranged is a neutral gear part, the lengths of the neutral gear parts formed by the trigger parts at intervals gradually decrease or increase gradually one by one along the length direction of the rod body, the traction component is used for tensioning the crane boom in a horizontal state so that the neutral gear parts respectively abut against the driving parts of the movable hanging parts one by one, and the grading trigger rod is pulled to move to the trigger parts according to the lifting state of the crane boom to abut against the driving parts of the corresponding movable hanging parts one by one in sequence so as to push the pin shaft parts of the movable hanging parts one by one to separate from the corresponding counterweight units.

In the embodiment of the utility model, the rod body and the plurality of trigger parts are integrally formed, and the plurality of trigger parts are protruded from the rod body.

In the embodiment of the utility model, the number of the hanging components and the number of the grading trigger rods are two, the two grading trigger rods are used for being arranged in one-to-one correspondence with the movable hanging components respectively arranged at the left side and the right side of the counterweight unit, and the traction components are respectively in driving connection with the two grading trigger rods.

In the embodiment of the utility model, one end of the grading trigger rod is radially penetrated and provided with a mounting hole for connecting the traction component.

In an embodiment of the utility model, the triggering part is provided as an inclined guiding surface on the side facing the towing direction.

In the embodiment of the utility model, the driving parts of the movable hanging parts are provided with the guide wheels for abutting the neutral gear part or the triggering part.

In the embodiment of the utility model, the balance reuse grading falling off hanging device further comprises a fixing frame arranged on the balance arm, wherein the fixing frame comprises a first stop rod assembly and a second stop rod assembly which are respectively arranged on the front side and the rear side of the balance weight assembly comprising a plurality of balance weight units.

In order to achieve the above object, the present utility model further provides a tower crane, wherein the tower crane includes a balancing weight assembly and a hierarchical drop-off hanging device according to the balancing reuse described above, the balancing weight assembly includes a plurality of balancing weight units, and the tops of the plurality of balancing weight units are each formed with a first pin hole through which a pin shaft portion is inserted.

Through the technical scheme, the balanced reuse grading falling off hanging device provided by the embodiment of the utility model has the following beneficial effects:

when the balance reuse grading shedding hanging device is used, as the hanging assembly and the unlocking mechanism are included, the plurality of movable hanging pieces of the hanging assembly respectively comprise the pin shaft parts which are sequentially and movably arranged on the balance arm and the balance weight unit from outside to inside, and the driving parts which are bent and extended from the outer ends of the pin shaft parts, the grading triggering rod of the unlocking mechanism comprises the rod body which is arranged on the inner side of the driving parts of the plurality of movable hanging pieces and is movably arranged on one side of the rod body, which faces the driving parts, of the balance arm, the traction assembly is connected with the tower crane and the rod body, and when the lifting arm is in an upward state, the traction assembly can move along with the grading triggering rod, and according to different lifting degrees of the lifting arm, the traction assembly pulls the grading triggering rod with different moving distances, so that the triggering part is sequentially abutted against the driving part of at least one movable hanging piece and is separated from the corresponding balance weight unit one by pushing the pin shaft part of the movable hanging piece, thus the grading shedding of the plurality of balance weight units is realized, and the falling resistance of the tower crane is more remarkably achieved than the existing anti-falling tower crane in a tipping anti-overturning mode.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide an understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view showing a structure in which a counterweight assembly is hung on a stage-separation hanging device according to an embodiment of the utility model;

FIG. 2 is a schematic view of a part of a hierarchical falling-off hanging device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a structure in which a movable hanging member abuts against a neutral portion of a grading trigger lever according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is a schematic view of a structure in which a movable hanging member abuts against a triggering portion of a grading trigger lever according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a three-stage drop design principle according to an embodiment of the present utility model.

Description of the reference numerals

1. Hanging assembly 11 movable hanging piece

13. Pin shaft part of guide wheel 14

15. Drive section 2 counterweight assembly

21. First pin hole of balancing weight unit 211

212. Second mounting seat 3 grading trigger rod

31. Neutral gear 32 trigger

5. First stop rod assembly of fixing frame 51

52. Balance arm of second stop rod assembly 6

61. First mounting seat

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.

The balance reuse grading falling off hanging device and the tower crane of the utility model are described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the present utility model provides a balanced reuse and graded shedding hanging device, wherein the balanced reuse and graded shedding hanging device includes:

the hanging assembly 1 comprises a plurality of movable hanging pieces 11 which are sequentially arranged along the length direction of the balance arm 6, wherein each movable hanging piece 11 comprises a pin shaft part 14 which is sequentially and movably arranged on the balance arm 6 and the balance weight unit 21 in a penetrating manner from outside to inside, and a driving part 15 which is bent and extended from the outer end of the pin shaft part 14;

the unlocking mechanism comprises a traction assembly and a grading trigger rod 3, wherein the grading trigger rod 3 comprises a rod body arranged on the inner sides of driving parts 15 of a plurality of movable hanging parts 11 and movably arranged on a balance arm 6 and a trigger part 32 arranged on one side of the rod body facing the driving parts 15, the traction assembly is connected with a tower crane and the rod body and is used for pulling the grading trigger rod 3 to move according to the lifting state of the crane arm, so that the trigger part 32 is sequentially abutted with the driving parts 15 of at least one movable hanging part 11 in the hanging assembly 1 to push pin shaft parts 14 of the movable hanging parts 11 one by one to separate from corresponding balance weight units 21.

When the balance reuse grading shedding hanging device is used, as the hanging assembly 1 and the unlocking mechanism are included, the plurality of movable hanging pieces 11 of the hanging assembly 1 respectively comprise the pin shaft part 14 which is sequentially and movably penetrated on the balance arm 6 and the balance weight unit 21 from outside to inside and the driving part 15 which is bent and extended from the outer end of the pin shaft part 14, the grading triggering rod 3 of the unlocking mechanism comprises the rod body which is arranged on the inner side of the driving part 15 of the plurality of movable hanging pieces 11 and is movably arranged on the balance arm 6 and the triggering part 32 which is arranged on one side of the rod body facing the driving part 15, the traction assembly is connected with the tower crane and the rod body, and when the crane arm is in an ascending state, the traction assembly can move along with the grading triggering rod 3, and according to different ascending degrees of the crane arm, the traction assembly pulls the grading triggering rod 3, the triggering part 32 is sequentially abutted with the driving part 15 of at least one movable hanging piece 11 in the hanging assembly 1, and pushes the pin shaft part 14 of the movable hanging piece 11 to separate from the corresponding balance weight unit 21 one by one, so that the falling-off resistance performance of the balance weight unit 21 can be more obviously realized in the same way as the prior art, and the falling resistance performance of the utility model can be more remarkably realized.

It should be noted that, the counterweight assembly 2 includes a plurality of counterweight units 21 hung on a plurality of movable hanging members 11 in a one-to-one correspondence, the hanging of the counterweight units 21 by the movable hanging members 11 can be unlocked, and the counterweight units 21 are released from the balance arms 6 after the unlocking. The balance arm 6 and the balance weight unit 21 are provided with a first mount 61 and a second mount 212 in one-to-one correspondence, and the first mount 61 and the second mount 212 are used for the pin shaft portion 14 to be sequentially and movably penetrated from outside to inside.

In the embodiment of the present utility model, the number of the triggering portions 32 is a plurality, the triggering portions 32 are sequentially and alternately arranged along the length direction of the lever body, the lever body between any two triggering portions 32 adjacently arranged is set as the neutral portion 31, and the length of each neutral portion 31 formed by the interval of the triggering portions 32 is gradually decreased or increased gradually along the length direction of the lever body, as shown in fig. 1 and fig. 2, specifically, the length of each neutral portion 31 is gradually increased gradually along the traction direction of the traction assembly, that is, the counterweight units far away from the traction assembly can be first dropped off, the traction assembly is used for tensioning the crane arm in a horizontal state so that each neutral portion 31 is respectively in contact with the driving portions 15 of the corresponding counterweight units 21 in a one-to-one correspondence manner, and further, the traction assembly is further used for stably supporting the hanging of the corresponding counterweight units 21, and pulling the grading triggering lever 3 to move to the plurality of triggering portions 32 in a one-to-one correspondence manner with the driving portions 15 of the corresponding movable hanging members 11 according to the lifting state of the crane arm, so as to push the counterweight units 14 of the movable hanging members 11 to be separated from the corresponding pin units 21 one-to-by-one. That is, the plurality of movable hanging members 11 can perform one-to-one corresponding triggering by providing the plurality of triggering portions 32 for unlocking the hanging of the corresponding counterweight units 21, and since the lengths of the neutral portions 31 decrease or increase sequentially one by one in the length direction along the lever body, the time for the step triggering lever 3 to move to the plurality of triggering portions 32 to abut against the driving portions 15 of the corresponding movable hanging members 11 is sequentially set, so as to realize the step falling of the plurality of counterweight units 21. By doing so, the movement stroke of the gradation triggering lever 3 can be shortened as compared with the case where only one triggering portion 32 is provided as a trigger for the hanging unlocking of the plurality of movable hanging pieces 11.

Specifically, when the lengths of the plurality of neutral gear portions 31 are set to decrease one by one in sequence in the pulling direction of the pulling assembly, when the pulling assembly pulls the hierarchical trigger lever 3 to move, the trigger portion 32 disposed close to the pulling assembly will reach abutment with the corresponding movable hanging piece 11 for the first time, so that the counterweight unit 21 disposed close to the pulling assembly will drop off for the first time, the movable hanging piece 11 disposed close to the pulling assembly becomes the first-stage movable hanging piece 11, and the remaining movable hanging pieces 11 become the second-stage movable hanging pieces 11 in sequence; when the length of a plurality of neutral gear parts 31 is set to progressively increase in order one by one along the pulling direction of the pulling assembly, then when the pulling assembly pulls the hierarchical trigger lever 3 to move, the trigger part 32 that keeps away from the pulling assembly setting can reach and be in contact with corresponding movable hanging piece 11 first, thereby make the balancing weight unit 21 that keeps away from the pulling assembly setting can drop first, the movable hanging piece 11 that keeps away from the pulling assembly setting becomes first-stage movable hanging piece 11, the remaining movable hanging piece 11 becomes second-stage movable hanging piece 11 in order. Specifically, the number of the balancing weights 21 that can be dropped in a grading manner may be three, the number of the corresponding movable hanging members 11 is also three, three neutral gear portions 31 are correspondingly formed on the columnar grading trigger rod 3, trigger portions 32 are respectively disposed between any two adjacent neutral gear portions 31 of the three neutral gear portions 31, and trigger portions 32 may be disposed at two ends of the three neutral gear portions 31.

In the embodiment of the utility model, the lever body and the plurality of triggering parts 32 are integrally formed, and the plurality of triggering parts 32 are protruded from the lever body. That is, the whole grading trigger rod 3 can be of an integrated structure, the plurality of trigger parts 32 can be formed by sequentially arranging a plurality of grooves at intervals along the length direction of the grading trigger rod 3, the part of the grading trigger rod 3 protruding from the grooves is provided with the trigger parts 32, and the grooves are provided with the neutral gear parts 31, so that the aim of reducing the manufacturing cost is fulfilled. When the boom is in the raised state, the traction assembly pulls the grading trigger rod 3 to move, and moves from the inside of the groove of the neutral gear part 31 to the boss of the corresponding trigger part 32 to be in contact with the driving part 15 of the movable hanging part 11, and the driving part 15 of the movable hanging part 11 moves outwards due to the abrupt change of the size from the groove to the boss, so as to pull out the pin shaft part 14 from the first pin mounting hole 211 of the counterweight unit 21, and the support of the movable hanging part 11 is lost due to the counterweight unit 21, so that the falling off from the counterweight unit 6 can be realized. Of course, the utility model is not limited thereto, but may be applied by adding an additional trigger member to the step trigger lever 3.

In the embodiment of the utility model, the number of the hanging components 1 and the number of the grading trigger rods 3 can be two, the two grading trigger rods 3 are used for being arranged in one-to-one correspondence with the movable hanging components 11 respectively arranged on the left side and the right side of the counterweight unit 21, and the traction components are respectively in driving connection with the two grading trigger rods 3. That is, the two hanging components 1 are respectively arranged at the left side and the right side of the counterweight assembly 2, so that the left side and the right side of the plurality of counterweight units 21 in the counterweight assembly 2 are respectively provided with the movable hanging parts 11, the pin shaft parts 14 of the movable hanging parts 11 of the two hanging components 1 are respectively arranged on the counterweight units 21 from outside to inside in a penetrating manner on the counterweight arms 6 in sequence under the horizontal state of the lifting arm, and the driving parts 15 are positioned at the outer sides of the grading trigger rods 3 and are respectively abutted against the corresponding neutral gear parts 31, so that the stability of hanging the counterweight assembly 2 at the tail ends of the counterweight arms 6 is further ensured. Specifically, the traction assembly may include two traction driving members with telescopic functions, where the two traction driving members are respectively in driving connection with the two grading trigger rods 3 in a one-to-one correspondence manner, and of course, the control of the two traction driving members may be triggered simultaneously.

In the embodiment of the utility model, one end of the grading trigger rod 3 is radially provided with a mounting hole for connecting the traction component in a penetrating way. The installation holes are additionally arranged, so that the assembly and disassembly of the grading trigger rod 3 and the traction assembly are convenient to realize. Of course, the utility model is not limited thereto and it is also possible that the graduated trip lever 3 is connected to the traction assembly by other suitable connection arrangements.

Referring again to fig. 2, in the embodiment of the present utility model, the trigger portion 32 is provided as an inclined guide surface on the side facing the pulling direction. The traction direction is a direction in which the traction assembly pulls the graded trigger lever 3 to move when the boom is in the raised state, and the inclined guide surface is provided on the trigger portion 32, so that smoothness in which the graded trigger lever 3 moves from the neutral portion 31 to the trigger portion 32 abuts against the driving portion 15 of the movable hanger 11 can be ensured.

Referring to fig. 2 to 5, in the embodiment of the present utility model, guide wheels 13 for abutment of the neutral gear portion 31 or the trigger portion 32 are provided on the driving portions 15 of the plurality of movable hitches 11. That is, the driving part 15 of the movable hanging piece 11 can be in rolling contact with the neutral gear part 31 or the triggering part 32 through the guide wheel 13, so that the smoothness of the movement of the grading triggering lever 3 is ensured, and the abnormal abrasion phenomenon of the movable hanging piece 11 is avoided.

As shown in fig. 1, in the embodiment of the present utility model, the balancing, reusing, grading, falling off and hanging device further includes a fixing frame 5 provided on the balancing arm 6, the fixing frame 5 including a first stopper rod assembly 51 and a second stopper rod assembly 52 provided separately on both front and rear sides of the balancing weight assembly 2 including the plurality of balancing weight units 21. Specifically, the front side of the balancing weight assembly 2 may be defined as the side disposed close to the boom, the rear side of the balancing weight assembly 2 may be defined as the side disposed away from the boom, i.e., the first stop lever assembly 51 may stop at the front side of the balancing weight assembly 2, and the second stop lever assembly 52 may stop at the rear side of the balancing weight assembly 2. More specifically, the balancing weight assembly 2 may further include, in addition to the balancing weight unit 21 mounted on the movable mount 11, the balancing weight unit 21 fixedly mounted on the first stop lever assembly 51 and/or the second stop lever assembly 52, i.e. the balancing weight unit 21 at the end of the balancing weight assembly 2 may be fixedly arranged such that the balancing weight unit 21 at the end can exert an upward supporting force on the balancing weight unit 21 mounted on the mount assembly 1, which has not yet been detached, when the boom is lifted up and the balancing arm 6 is swung down.

In order to achieve the above object, the present utility model also provides a tower crane, wherein the tower crane includes a balancing weight assembly 2 and a balancing and grading falling off hanging device according to the above, and as shown in fig. 1, 3 and 5, the balancing weight assembly 2 includes a plurality of balancing weight units 21, and the top of each of the plurality of balancing weight units 21 is formed with a first pin mounting hole 211 through which the pin shaft portion 14 is inserted. Because the tower crane adopts all the technical schemes of the above embodiments, the tower crane has at least all the beneficial effects brought by the technical schemes of the above embodiments, and will not be described in detail herein.

Specifically, two second mounting seats 212 are oppositely arranged at intervals on the top of the balancing weight unit 21 along the left-right direction, two first pin mounting holes 211 are formed on the two second mounting seats 212, the first mounting seats 61 are respectively arranged on the outer sides of the two second mounting seats 212 of the balancing arm 6, the second pin mounting holes formed on the first mounting seats 61 are arranged opposite to the first pin mounting holes, the pin shaft parts 14 of the movable hanging parts 11 positioned on the left side of the balancing weight unit 21 sequentially penetrate through the second pin mounting holes and the first pin mounting holes 211 positioned on the left side from outside to inside, and the pin shaft parts 14 of the movable hanging parts 11 positioned on the right side of the balancing weight unit 21 sequentially penetrate through the second pin mounting holes and the first pin mounting holes 211 positioned on the right side from outside to inside. Of course, the present utility model is not limited to this, and the first pin hole 211 of the counterweight unit 21 is not limited to the top of the counterweight unit 21, and both sides are also possible.

Specifically, the design method of the unlocking mechanism of the hierarchical falling off hanging device comprises the following steps:

when the tower crane is suddenly unloaded, the upper part lifts up around the rear hinge point. When different working conditions are suddenly unloaded, the lifting angles of the upper assembly are different due to different falling weights, the falling balance weight units are reasonably classified according to the different lifting angles, and the falling angles of the balance weight units of each level are determined.

When the lifting angle reaches the falling angle,the travel distance of the graduated trip lever may be calculated. For example, when the balance weight assembly is designed to three-stage fall-off, the fall-off angles are respectively alpha ₁ 、α ₂ 、α ₃ When the stroke of the corresponding grading trigger rod is A ₁ 、A ₂ 、A ₃ And then the position of the triggering part on the grading triggering rod can be determined, the three-stage falling-off moving process can be shown in fig. 6, wherein fig. (a) is a structural schematic diagram of stable hanging of the balancing weight unit, fig. (b) is a structural schematic diagram of falling off of the one-stage balancing weight unit, fig. (c) is a structural schematic diagram of falling off of the two-stage balancing weight unit, and fig. (d) is a structural schematic diagram of falling off of the three-stage balancing weight unit. When the lifting angle of the lifting arm reaches the first-stage falling angle alpha ₁ When the stroke of the grading trigger rod is A ₁ At the moment, the triggering part jacks up the primary movable hanging piece, so that the movable hanging piece loosens the counterweight unit under the lever action, and the primary counterweight unit falls off. When the lifting angle of the lifting arm reaches the secondary falling angle alpha ₂ When the stroke of the grading trigger rod is A ₂ At the moment, the triggering part jacks up the secondary movable hanging piece, so that the movable hanging piece loosens the counterweight unit under the lever action, and the secondary counterweight unit falls off; the three-stage counterweight unit and so on.

Further, the utility model converts different lifting angles into the strokes of the grading trigger rods 3 through a mechanical structure based on different lifting angles caused by sudden unloading under different working conditions, designs the position of the trigger part 32 on the grading trigger rods 3 according to the strokes of the different grading trigger rods 3, and realizes the grading falling of different lifting angles by pushing the pulling pins of the movable hanging piece 11 through the grading trigger rods 3.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (9)

1. The utility model provides a balanced reuse hierarchical hanging device that drops which characterized in that, balanced reuse hierarchical hanging device that drops includes:

the hanging assembly (1) comprises a plurality of movable hanging pieces (11) which are sequentially arranged along the length direction of the balance arm (6), wherein the movable hanging pieces (11) comprise pin shaft parts (14) which are sequentially and movably arranged on the balance arm (6) and the balance weight unit (21) in a penetrating manner from outside to inside, and driving parts (15) which are bent and extended from the outer ends of the pin shaft parts (14);

the unlocking mechanism comprises a traction assembly and a grading trigger rod (3), wherein the grading trigger rod (3) comprises a rod body which is arranged on the inner sides of driving parts (15) of a plurality of movable hanging parts (11) and is movably arranged on the balance arm (6), and a trigger part (32) which is arranged on one side of the rod body, which faces the driving parts (15), the traction assembly is connected with the tower crane and the rod body and is used for pulling the grading trigger rod (3) to move according to the lifting state of the crane arm, so that the trigger part (32) is sequentially abutted with the driving parts (15) of at least one movable hanging part (11) in the hanging assembly (1) to push pin shaft parts (14) of the movable hanging parts (11) one by one to separate from corresponding balance weight units (21).

2. The balance reuse classifying-falling-off hanging device according to claim 1, wherein the number of the triggering parts (32) is plural, the triggering parts (32) are sequentially arranged at intervals along the length direction of the rod body, the rod body between any two triggering parts (32) which are adjacently arranged is provided with a neutral part (31), the length of each neutral part (31) formed by the triggering parts (32) at intervals is gradually decreased or increased gradually along the length direction of the rod body, the traction assembly is used for tensioning when a crane arm is in a horizontal state so that each neutral part (31) is respectively abutted against the driving parts (15) of a plurality of movable hanging parts (11) in a one-to-one mode, and the classifying triggering rod (3) is pulled to move to the position according to the lifting state of the crane arm so that the triggering parts (32) are sequentially abutted against the driving parts (15) of the corresponding movable hanging parts (11) in one-to-one mode so as to push the driving parts (21) of the corresponding movable hanging parts (11) to be separated from the corresponding pin shafts (21) one by one.

3. The balance reuse stage separation hanging device according to claim 2, wherein the lever body and the plurality of trigger parts (32) are integrally formed, and the plurality of trigger parts (32) are protruded from the lever body.

4. The balance reuse grading falling off hanging device according to claim 1, wherein the number of the hanging components (1) and the grading trigger rods (3) is two, the two grading trigger rods (3) are used for being arranged in one-to-one correspondence with movable hanging pieces (11) respectively arranged on the left side and the right side of the balancing weight unit (21), and the traction components are respectively in driving connection with the two grading trigger rods (3).

5. The balance reuse grading falling off hanging device according to claim 4, wherein one end of the grading trigger rod (3) is radially provided with a mounting hole for connecting the traction assembly.

6. The balanced reuse graded dropout hanging device according to any of the claims 1 to 5, characterized in that the triggering part (32) is provided as an inclined guiding surface on the side facing the towing direction.

7. The balance reuse stage-falling off hanging device according to claim 2, wherein guide wheels (13) for abutting against the neutral gear part (31) or the trigger part (32) are provided on the driving parts (15) of the plurality of movable hanging pieces (11).

8. The balance reuse stage-falling-off hanger according to any one of claims 1 to 5, further comprising a mount (5) provided on the balance arm (6), the mount (5) including a first stopper rod assembly (51) and a second stopper rod assembly (52) provided separately on front and rear sides of the balance weight assembly (2) including a plurality of balance weight units (21).

9. A tower crane, characterized in that it comprises a balancing weight assembly (2) and a balancing, grading, drop-off and hanging device according to any one of claims 1 to 8, said balancing weight assembly (2) comprising a plurality of balancing weight units (21), the top of a plurality of said balancing weight units (21) being formed with a first pin hole (211) through which said pin shaft portion (14) is threaded.