CN216863471U

CN216863471U - Lifting mechanism and working machine

Info

Publication number: CN216863471U
Application number: CN202220025450.6U
Authority: CN
Inventors: 陈璐; 王亮; 王勤康
Original assignee: Sany America Inc
Current assignee: Sany America Inc
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-07-01
Anticipated expiration: 2032-01-04

Abstract

The utility model relates to the field of engineering machinery, and provides a lifting mechanism and an operating machine, which comprise: the three movable pulleys correspond to the lifting winch one by one and are arranged in parallel in sequence; the lifting hooks are sequentially arranged side by side; the movable pulleys are hinged to two ends of the first-stage connecting beam, the first-stage connecting beam is hinged to one end of the second-stage connecting beam, and the rest movable pulley is hinged to the other end of the second-stage connecting beam; and the third-stage connecting beam is hinged with the second-stage connecting beam, and each lifting hook is hinged with the third-stage connecting beam respectively. According to the arrangement, the pulleys are connected with the lifting hooks through the connecting beams at different levels, and the pulleys are connected with the lifting winch respectively, so that the overall lifting capacity is improved, and the hoisting requirement of medium and large tonnage is met. And when lifting the heavy object of the same weight, share through a plurality of lifting hooks, can reduce the load that every lifting hook bore, reduce lifting hook cost, the price/performance ratio is higher.

Description

Lifting mechanism and working machine

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a lifting mechanism and an operation machine.

Background

At present, a crawler crane widely adopts a double-winch driving mode to improve the lifting capacity and overcome the defect that a traditional single-winch system is small in driving moment. The crawler crane comprises two lifting winches, and a lifting hook is lifted by the two lifting winches together to lift heavy objects.

However, with the increasing of the hoisting tonnage, the double-lifting winch cannot meet the hoisting requirement of medium and large tonnage. And the weight is lifted by one lifting hook, so that the lifting capacity of the lifting hook is limited, and the cost of the lifting hook is higher.

Therefore, how to solve the problems that the double-winch driving mode of the crawler crane in the prior art cannot meet the hoisting requirement of medium and large tonnage and the cost performance of one lifting hook for lifting heavy objects is low becomes an important technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lifting mechanism and an operating machine, which are used for solving the problems that a double-winch driving mode of a crawler crane in the prior art cannot meet the hoisting requirement of medium and large tonnage and the cost performance of a lifting hook for lifting heavy objects is low.

The present invention provides a lifting mechanism, comprising:

the movable pulleys correspond to the hoisting winch one by one, and are arranged in parallel in sequence;

the lifting hooks are sequentially arranged side by side;

the movable pulleys are hinged to two ends of the first-stage connecting beam, the first-stage connecting beam is hinged to one end of the second-stage connecting beam, and the rest movable pulley is hinged to the other end of the second-stage connecting beam;

and the third-level connecting beam is hinged with the second-level connecting beam, and the lifting hooks are respectively hinged with the third-level connecting beam.

According to the lifting mechanism provided by the utility model, two adjacent movable pulleys are symmetrically hinged at two ends of the primary connecting beam, a first hinge point is formed at the hinge joint of the primary connecting beam and the secondary connecting beam, and the first hinge point is positioned on the middle line of the primary connecting beam.

According to the lifting mechanism provided by the utility model, a second hinge point is formed at the hinge joint of the remaining movable pulley and the secondary connecting beam, and a third hinge point is formed at the hinge joint of the tertiary connecting beam and the secondary connecting beam, wherein the moment arm between the second hinge point and the third hinge point is equal to 2 times of the moment arm between the first hinge point and the third hinge point.

According to the lifting mechanism provided by the utility model, the lifting hooks are uniformly distributed at intervals along the length direction of the three-stage connecting beam.

According to the lifting mechanism provided by the utility model, the primary connecting beam comprises:

the pair of first connecting plates are distributed at intervals along the width direction of the movable pulleys, and pulley frames of two adjacent movable pulleys are hinged with the pair of first connecting plates;

the first pivot is arranged along the width direction of the movable pulley, the primary connecting beam is hinged to the secondary connecting beam through the first pivot, and a pair of first connecting plates and the secondary connecting beam are correspondingly provided with first mounting holes for the first pivot to pass through.

According to the lifting mechanism provided by the utility model, the secondary connecting beam comprises:

the pair of second connecting plates are distributed at intervals along the width direction of the movable pulley, and one end of each pair of second connecting plates is provided with the first mounting hole;

the second pivot is arranged along the width direction of the movable pulley, the rest movable pulley is hinged to the other end of the second connecting plate through the second pivot, and a second mounting hole for the second pivot to pass through is correspondingly formed in the rest movable pulley and the pair of second connecting plates;

and the second connecting plate and the third connecting beam are correspondingly provided with third mounting holes for the third pivot to pass through.

According to the lifting mechanism provided by the utility model, the three-stage connecting beam comprises:

the first connecting shaft is arranged along the height direction of the third-stage connecting beam, and one end of the first connecting shaft is provided with the third mounting hole;

the pair of third connecting plates are distributed at intervals along the width direction of the movable pulley;

the fourth pivot is arranged along the width direction of the movable pulley, and the other end of the first connecting shaft and the pair of third connecting plates are correspondingly provided with fourth mounting holes for the fourth pivot to pass through;

at least two fifth pivots are arranged along the width direction of the movable pulley, the fifth pivots are in one-to-one correspondence with the lifting hooks, the lifting hooks are arranged between the pair of third connecting plates, and the pair of third connecting plates and the lifting hooks are correspondingly provided with fifth mounting holes for the fifth pivots to pass through.

According to the lifting mechanism provided by the utility model, the pair of third connecting plates is in a triangular structure, the fourth pivot is arranged at the top of the third connecting plates, and the fifth pivots are arranged at the bottom of the third connecting plates at intervals.

According to the lifting mechanism provided by the utility model, the lifting hook is provided with a locking device.

The utility model also provides an operating machine which comprises three lifting winches and the lifting mechanism, wherein the lifting winches are connected with the movable pulleys through the winch ropes in a one-to-one correspondence mode.

The utility model provides a lifting mechanism, comprising: the three movable pulleys correspond to the lifting winch one by one and are arranged in parallel in sequence; the lifting hooks are sequentially arranged side by side; the movable pulleys are hinged to two ends of the first-stage connecting beam, the first-stage connecting beam is hinged to one end of the second-stage connecting beam, and the rest movable pulley is hinged to the other end of the second-stage connecting beam; and the third-stage connecting beam is hinged with the second-stage connecting beam, and each lifting hook is hinged with the third-stage connecting beam respectively. According to the arrangement, the pulleys are connected with the lifting hooks through the connecting beams at different levels so as to lift a heavy object, and the pulleys are connected with the lifting winch respectively, so that the overall lifting capacity is improved, and the lifting requirement of medium and large tonnage is met. And when the heavy object with the same weight is lifted, the load born by each lifting hook can be reduced by sharing the lifting hooks, the cost of the lifting hooks is reduced, and the cost performance is higher, so that the problems that the double-winch driving mode of the crawler crane in the prior art cannot meet the lifting load requirement of medium and large tonnage and the cost performance of lifting the heavy object by one lifting hook is lower are solved.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of 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 other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of a lift mechanism provided by the present invention;

FIG. 2 is a side view of the lifting mechanism provided by the present invention;

reference numerals:

1: a movable pulley; 2: a primary connecting beam; 3: a secondary connecting beam;

4: a third-stage connecting beam; 5: a hook; 6: a first hinge point;

7: a second hinge point; 8: a third hinge point; 9: a first connecting plate;

10: a pulley yoke; 11: a first pivot; 12: a second connecting plate;

13: a third pivot; 14: a first connecting shaft; 15: a third connecting plate;

16: a fourth pivot; 17: a fifth pivot; 18: a locking device;

19: a raised portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, 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.

The lifting mechanism of the present invention is described below with reference to fig. 1 to 2.

As shown in fig. 1, the embodiment of the present invention provides a lifting mechanism, which includes three movable pulleys 1, at least two hooks 5, a primary connecting beam 2, a secondary connecting beam 3, and a tertiary connecting beam 4. Specifically, as shown in fig. 1, the movable sheave 1 corresponds to the hoisting winch one by one. The three movable pulleys 1 are sequentially arranged side by side and correspondingly connected with the three hoisting winches through the steel wire ropes, so that the hoisting requirement of medium and large tonnage can be met, particularly the hoisting requirement of 1000 tonnage. In actual use, more than three hoisting winches can be arranged according to hoisting requirements of different tonnages, and the hoisting winches are correspondingly matched with the movable pulleys 1. Each lifting hook 5 sets up side by side in proper order, promotes the heavy object jointly, correspondingly, has reduced the bearing demand of every lifting hook 5, and its quantity can be according to the reasonable setting of actual bearing demand. And as shown in fig. 2, each of the hooks 5 is symmetrically provided with a pair of hooks to more stably hang the weight.

As shown in fig. 1, two adjacent movable pulleys 1 on the left side are respectively hinged at two ends of a primary connecting beam 2, for example, the movable pulleys are connected through a pin shaft, and locking parts such as spring clips can be installed at two ends of the pin shaft after the pin shaft is inserted, so as to prevent the pin shaft from falling off. The primary connecting beam 2 is hinged at one end of the secondary connecting beam 3, and the remaining movable pulley 1 on the right side is hinged at the other end of the secondary connecting beam 3. Tertiary tie beam 4 is located the below of second grade tie beam 3, and is articulated mutually with second grade tie beam 3. Meanwhile, each lifting hook 5 is hinged with the third-stage connecting beam 4. In the arrangement position of the lifting mechanism shown in fig. 1, the left-right direction in the drawing is the left-right direction, and the up-down direction is the up-down direction.

So set up, be connected a plurality of movable pulleys 1 and a plurality of lifting hook 5 through multistage tie-beam to promote the heavy object, adopt articulated mode, so that nimble adjustment, hoist and mount are convenient. And a plurality of movable pulleys 1 are respectively connected with a hoisting winch, so that the integral hoisting capacity is correspondingly improved, and the hoisting requirement of medium and large tonnage is met. And when lifting by crane the heavy object of the same weight, share through a plurality of lifting hooks 5, can reduce the load that every lifting hook 5 bore, compare in a lifting hook 5, cost reduction, the price/performance ratio is higher to the problem that crawler crane double hoist driving method can not satisfy the hanging load demand of medium and large tonnage and a lifting hook promotes heavy object cost-performance ratio among the prior art is lower has been solved.

In the embodiment of the utility model, as shown in fig. 1, two movable pulleys 1 adjacent to the left side are symmetrically hinged at two ends of a primary connecting beam 2, a first hinge point 6 is formed at the hinge joint of the primary connecting beam 2 and a secondary connecting beam 3, and the first hinge point 6 is located on the center line of the primary connecting beam 2. The arrangement is that after the heavy object is hung, the load born by the two movable pulleys 1 is equal, and the two movable pulleys can be shared on average, so that the problem of rope outlet asynchronism caused by uneven stress is avoided.

Further, a second hinge point 7 is formed at the hinge joint of the left movable pulley 1 on the right side and the second-stage connecting beam 3, and a third hinge point 8 is formed at the hinge joint of the third-stage connecting beam 4 and the second-stage connecting beam 3. In particular, as shown in fig. 1, the arm of force L2 between the second hinge point 7 and the third hinge point 8 is equal to 2 times the arm of force L1 between the first hinge point 6 and the third hinge point 8. With the arrangement, the load borne by the first hinge point 6 is 2 times that borne by the second hinge point 7, and the two movable pulleys 1 on the left side are symmetrically hinged to two ends of the primary connecting beam 2, so that the loads borne by the three movable pulleys 1 are equal, and the hoisting weight is shared on average. And then avoid lifting hook 5 to take place the shake in the in-process of lifting by crane for the structure is more stable, and hoisting capacity obtains further improving.

In the embodiment of the utility model, the hooks 5 are uniformly distributed at intervals along the length direction of the tertiary connecting beam 4. For example, as shown in fig. 1, there are two hooks 5, and the two hooks 5 are symmetrically hinged to both ends of the tertiary connecting beam 4. By the arrangement, the lifting hooks 5 can be uniformly stressed, the lifting hooks are prevented from deflecting during lifting, and the stability is better. The whole hoisting capacity can be further improved, and the whole hoisting weight of the hoisting mechanism can be greatly improved. In the arrangement position of the lifting mechanism shown in fig. 1, the left-right direction in the drawing is the longitudinal direction of the tertiary connecting beam 4.

In the embodiment of the present invention, the hook 5 is further provided with a locking device 18. The locking device 18 may be a conventional mature product, such as a one-way opening return spring fork, and the detailed structure thereof is not described herein. Thereby ensuring that the hanging rope for hanging the heavy object can not be separated from the lifting hook 5, and ensuring that the lifting operation is safer and more reliable.

In the embodiment of the present invention, as shown in fig. 2, the primary connecting beam 2 includes a pair of first connecting plates 9 and a first pivot 11. A pair of first connecting plates 9 are distributed at intervals along the width direction of the movable pulleys 1, and the pulley frames 10 of two adjacent movable pulleys 1 are hinged with the pair of first connecting plates 9. Specifically, a pair of first link plates 9 are inserted into the pulley frame 10, and are pivotally connected by a pin. The first pivot 11 is arranged along the width direction of the movable pulley 1, and the primary connecting beam 2 is hinged with the secondary connecting beam 3 through the first pivot 11. Specifically, the pair of first connecting plates 9 and the secondary connecting beam 3 are correspondingly provided with first mounting holes for the first pivot 11 to pass through, and the primary connecting beam 2 and the secondary connecting beam 3 are hinged and connected by inserting the first pivot 11. Furthermore, locking members may be inserted at both ends of the first pivot 11 to ensure reliable mounting. In the arrangement position of the lifting mechanism shown in fig. 2, the left-right direction in the drawing is the width direction of the movable sheave 1.

Further, the secondary connecting beam 3 includes a pair of second connecting plates 12, a second pivot shaft, and a third pivot shaft 13. A pair of second connecting plates 12 are spaced apart from each other in the width direction of the movable pulley 1, and one end of the pair of second connecting plates 12, i.e., the left end of the second connecting plate 12 in fig. 1, is provided with a first mounting hole for mounting the first pivot 11. The second pivot shaft is provided along the width direction of the movable pulley 1, and as shown in fig. 1, the remaining one movable pulley 1 on the right side is hinged at the other end of the second link plate 12, i.e., the right end of the second link plate 12 in fig. 1, by the second pivot shaft. Specifically, a single movable pulley 1 and a pair of second connecting plates 12 are correspondingly provided with second mounting holes for a second pivot to pass through, and the right movable pulley 1 and the secondary connecting beam 3 are hinged through inserting the second pivot. Furthermore, a projection 19 may be provided on the second connecting plate 12, the lower end of the projection 19 being provided with a planar structure. When the lifting mechanism is placed on the ground, the plane structure is in contact with the ground and can be stably placed, so that the lifting mechanism is not lifted to shake and cannot be stably placed. As shown in fig. 2, the third pivot 13 is provided along the width direction of the movable sheave 1, and the secondary connecting beam 3 and the tertiary connecting beam 4 are hinged by the third pivot 13. Specifically, the pair of second connecting plates 12 and the third connecting beam 4 are correspondingly provided with third mounting holes for the third pivot 13 to pass through, and the second connecting beam 3 and the third connecting beam 4 are hinged and connected by inserting the third pivot 13.

Further, the tertiary link beam 4 includes a first link shaft 14, a pair of third link plates 15, a fourth pivot shaft 16, and at least two fifth pivot shafts 17. The first connecting shaft 14 is disposed along the height direction of the tertiary connecting beam 4, and one end of the first connecting shaft 14, i.e., the upper end of the first connecting shaft 14 in fig. 2, is provided with a third mounting hole for mounting the third pivot 13. The third pivot 13 passes through the first connecting shaft 14 and is respectively connected with the second connecting plates 12 on the two sides so as to realize the hinged connection of the secondary connecting beam 3 and the first connecting shaft 1. The pair of third link plates 15 are spaced apart in the width direction of the movable sheave 1, and the fourth pivot shafts 16 are provided in the width direction of the movable sheave 1. Specifically, the other end of the first connecting shaft 14, i.e., the lower end of the first connecting shaft 14 in fig. 2, and the pair of third connecting plates 15 are correspondingly provided with fourth mounting holes for the fourth pivots 16 to pass through, and the first connecting shaft 14 and the tertiary connecting beam 4 are hinged by inserting the fourth pivots 16, so that the secondary connecting beam 3 and the tertiary connecting beam 4 are connected together. The fifth pivots 17 are in one-to-one correspondence with the hooks 5, and the fifth pivots 17 are provided along the width direction of the movable sheave 1. As shown in fig. 2, the hook 5 is disposed between the pair of third connecting plates 15, and the pair of third connecting plates 15 and the hook 5 are provided with fifth mounting holes through which the fifth pivot 17 passes, respectively. Specifically, the lifting hook 5 is provided with a second connecting shaft arranged in the height direction of the third-stage connecting beam 4, and the second connecting shaft is provided with a fifth mounting hole. And the fifth pivot 17 passes through the second connecting shaft and is respectively connected with the third connecting plates 15 on the two sides so as to realize the hinged connection of the lifting hook 5 and the third-stage connecting beam 4. It should be noted that, in terms of the placement position of the lifting mechanism shown in fig. 2, the vertical direction in the drawing is the pointed vertical direction, and the height direction of the third-stage connecting beam 4 is also referred to as the vertical direction.

In the embodiment of the present invention, as shown in fig. 1, the pair of third connecting plates 15 is in a triangular structure, the fourth pivot 16 is disposed at the top of the third connecting plate 15, and the fifth pivots 17 are disposed at the bottom of the third connecting plate 15 at intervals. Specifically, there are two hooks 5, and there are two corresponding fifth pivots 17. The hinge joint of the fourth pivot 16 and the third connecting plate 15 is located on the middle line of the third connecting plate 15, and the two fifth pivots 17 are symmetrically arranged about the middle line of the third connecting plate 15. The design like this, it is rationally distributed, stable in structure, be convenient for manufacturing. It should be noted that, in terms of the placement position of the lifting mechanism shown in fig. 1, the upper end in the drawing is the top of the third connecting plate 15, and the lower end in the drawing is the bottom of the third connecting plate 15.

In summary, the embodiment of the present invention provides a lifting mechanism, which uses three lifting winches to connect three movable pulleys 1, so as to meet the requirement of heavy-tonnage hoisting in a crawler crane and the like. And adopt a plurality of lifting hooks 5 to share heavy object weight, stability is better, and the lifting capacity is stronger. And the disassembly and assembly efficiency is higher, and the cost performance is better. Specifically, as shown in fig. 1, two movable pulleys 1 are connected in parallel, and pulley frames 10 of the pair of movable pulleys 1 are symmetrically hinged at both ends of a primary connecting beam 2. Then the left end of the second-level connecting beam 3 is hinged on the center line of the first-level connecting beam 2, and the right end of the second-level connecting beam 3 is hinged on the pulley frame 10 of the other independent movable pulley 1. And finally, the third-stage connecting beam 4 is hinged at the lower end of the second-stage connecting beam 3, and the two lifting hooks 5 are arranged below the second-stage connecting beam 3 in parallel through the third-stage connecting beam 4. Thereby be connected movable pulley part and lifting hook 5 through multistage tie-beam, movable pulley part promotes the heavy object under wire rope's drive along with lifting hook 5 jointly. It should be noted that the hinge joint needs to be lubricated sufficiently to ensure that the hinge joint can rotate freely.

The present invention provides a work machine, to which reference is made in correspondence with the above-described lifting mechanism.

The embodiment of the utility model also provides the working machine, and particularly relates to a crawler crane and the like. The working machine includes three hoisting winches connected to the movable sheave in a one-to-one correspondence via hoisting ropes, and the hoisting mechanisms in the above embodiments. So set up, be connected a plurality of pulleys and a plurality of lifting hook 5 through tie-beam at different levels to promote the heavy object, and a plurality of pulleys are connected a promotion hoist respectively, have improved whole lifting capacity, satisfy the hoist load demand of medium and large-tonnage. And when lifting the heavy object of the same weight, share through a plurality of lifting hooks 5, can reduce the load that every lifting hook 5 bore, reduce the lifting hook cost, the price/performance ratio is higher to solved among the prior art crawler crane double hoist driving mode can not satisfy the lifting demand of medium and large tonnage and a lifting hook promotes the problem that the heavy object cost is lower. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect of the lifting mechanism, and therefore, the description thereof is omitted.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A lift mechanism, comprising:

the lifting hooks are sequentially arranged side by side;

2. The lifting mechanism according to claim 1, wherein two adjacent movable pulleys are symmetrically hinged to two ends of the primary connecting beam, a first hinge point is formed at a hinge joint of the primary connecting beam and the secondary connecting beam, and the first hinge point is located on a central line of the primary connecting beam.

3. The lifting mechanism according to claim 2, wherein the hinge joint of the remaining one of the movable pulleys and the secondary connecting beam forms a second hinge point, and the hinge joint of the tertiary connecting beam and the secondary connecting beam forms a third hinge point, wherein the moment arm between the second hinge point and the third hinge point is equal to 2 times the moment arm between the first hinge point and the third hinge point.

4. The lifting mechanism as recited in claim 1, wherein each of the hooks is evenly spaced along a length of the tertiary connecting beam.

5. The lift mechanism of claim 1, wherein the primary connecting beam comprises:

6. The lifting mechanism as recited in claim 5, wherein the secondary connecting beam comprises:

7. The lifting mechanism as recited in claim 6, wherein the tertiary connecting beam comprises:

8. The lift mechanism as recited in claim 7, wherein a pair of said third link plates are triangular in configuration, said fourth pivot axis being disposed at a top portion of said third link plates, and each of said fifth pivot axes being spaced apart at a bottom portion of said third link plates.

9. A lifting mechanism as claimed in claim 1, wherein the hook is provided with a latch.

10. A working machine comprising three hoisting winches and a hoisting mechanism according to any one of claims 1 to 9, wherein the hoisting winches are connected to the movable sheave in a one-to-one correspondence by hoisting ropes.