CN215711112U

CN215711112U - Hook device for crane

Info

Publication number: CN215711112U
Application number: CN202120925548.2U
Authority: CN
Inventors: 曾广洪
Original assignee: Dongguan Taixin Heavy Lifting Equipment Co ltd
Current assignee: Guangdong Taixin Heavy Industry Lifting Equipment Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-02-01
Anticipated expiration: 2031-04-29

Abstract

The utility model relates to the technical field of cranes, in particular to a lifting hook device for a crane, which comprises a lifting hook assembly, a pulley assembly and a connecting piece connected with the lifting hook assembly and the pulley assembly, wherein the connecting piece comprises a first lifting hook plate and a second lifting hook plate, the pulley assembly comprises a pulley shaft, a pulley block, a pulley cover and a fixing piece, the pulley block comprises a plurality of pulleys, a first bearing is arranged between each pulley and the pulley shaft, a separating ring is arranged between each pulley and the fixing piece, the separating ring is positioned between each pulley cover and the corresponding pulley shaft, each pulley cover is provided with an annular elastic piece, each separating ring is provided with an annular groove, and the annular grooves are in concave-convex fit with the annular elastic pieces. When the pulley cover is assembled with the pulley shaft, the annular elastic part cannot block the sliding of the pulley cover on the separating ring, and the annular elastic part has limiting and guiding effects on the pulley cover, so that the assembly of the pulley cover and the pulley shaft is facilitated, and the pulley cover is prevented from sliding or displacing on the separating ring under the action of external force.

Description

Hook device for crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a hook device for a crane.

Background

The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range; the crane drives the goods through the lifting hook, so that the goods are moved or transported, the lifting hook belongs to a common device for connecting the goods and the crane, however, the existing lifting hook device is complex in structure, unchanged in processing and difficult to operate in the actual use process; and the stability that the pulley cover of current hook set is connected with the pulley hub is not enough, leads to the spare part in the hook set easily to produce when lifting by crane the goods and rocks or the displacement. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a hook device for a crane.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a lifting hook device for a crane comprises a lifting hook component, a pulley component and a connecting piece connected with the lifting hook component and the pulley component, wherein the connecting piece comprises a first lifting hook plate positioned on one side of the lifting hook component and a second lifting hook plate positioned on the other side of the lifting hook component and arranged in parallel and symmetrical with the first lifting hook plate, the pulley component comprises a pulley shaft penetrating through the first lifting hook plate and the second lifting hook plate, a pulley block sleeved outside the pulley shaft, a pulley cover arranged on the periphery of the bottom end of the pulley block and fixing pieces arranged at two ends of the pulley shaft, the pulley block comprises a plurality of pulleys, the plurality of pulleys are arranged in parallel, a first bearing is arranged between each pulley and the pulley shaft, a spacer sleeve is arranged between each two adjacent pulleys, a separating ring is arranged between each pulley and the fixing piece, the separating ring is positioned between each pulley cover and the pulley shaft, and an annular elastic piece is arranged at one end, close to the separating ring, of each pulley cover, the separating ring is provided with an annular groove, and the annular groove is in concave-convex fit with the annular elastic piece.

Further, the fixing piece comprises a round nut in threaded connection with the pulley shaft and a washer located between the round nut and the separating ring.

Furthermore, the lifting hook assembly comprises a lifting hook, a lifting hook fixing part connected to the top end of the lifting hook, a lifting hook seat sleeved outside the top end of the lifting hook and respectively connected with the bottom ends of the first lifting hook plate and the second lifting hook plate, and a second bearing located between the lifting hook seat and the lifting hook fixing part, wherein the lifting hook fixing part is used for locking the lifting hook on the lifting hook seat, and the lifting hook seat is located below the lifting hook fixing part.

Furthermore, the number of the pulleys is two, the two pulleys are located between the first hook plate and the second hook plate, and the other two pulleys are located on the outer sides of the first hook plate and the second hook plate respectively.

Furthermore, a plurality of threaded holes I are formed in the circumferential direction of the lifting hook fixing piece, a threaded hole II corresponding to one position of each threaded hole is formed in the lifting hook plate I or/and the lifting hook plate II, and the lifting hook plate I and the lifting hook plate II are sequentially inserted into the threaded holes II and the threaded holes I through locking pieces.

Furthermore, the bottom end of the lifting hook is provided with an anti-skid buckle.

Furthermore, a protruding block is arranged on one side, close to the lifting hook, of the lifting hook seat, and the two bearings are located between the protruding block and the lifting hook fixing part.

The utility model has the beneficial effects that: according to the utility model, the separating ring is arranged between the pulley cover and the pulley shaft, so that the pulley cover is prevented from directly driving the pulley shaft to shake or displace, the stability of the pulley assembly in the use process is influenced, and meanwhile, the pulley cover is prevented from being driven to deviate and driving the connecting piece connected with the pulley cover and the lifting hook assembly to shake in the rotation process of the pulley assembly, so that the stability and the accuracy of the lifting hook device in the use process are improved; the annular elastic part and the annular groove are additionally arranged, the annular elastic part cannot block the sliding of the pulley cover on the separating ring in the assembling process of the pulley cover and the pulley shaft, the annular elastic part has the limiting and guiding effects on the pulley cover, the assembly of the pulley cover and the pulley shaft is convenient, the pulley cover is prevented from sliding or displacing on the separating ring under the action of external force, and the stability in the assembling process of the pulley cover and the pulley shaft is improved.

Drawings

Fig. 1 is a schematic partial sectional structure view in front view of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of fig. 1 at B.

Description of reference numerals:

1. a hook assembly; 2. a sheave assembly; 3. a connecting member; 4. a fixing member; 11. a hook; 12. a hook fixture; 13. a hook base; 14. a second bearing; 15. a first threaded hole; 16. an anti-slip buckle; 17. a bump; 21. a pulley shaft; 22. a pulley cover; 23. a pulley; 24. a first bearing; 25. a spacer sleeve; 26. a spacer ring; 27. an annular groove; 28. an annular elastic member; 31. a first hook plate; 32. a second hook plate; 41. a round nut.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 3, the present invention provides a hook device for a crane, which includes a hook assembly 1, a pulley assembly 2, and a connecting member 3 connected to the hook assembly 1 and the pulley assembly 2, wherein the connecting member 3 includes a first hook plate 31 located at one side of the hook assembly 1 and a second hook plate 32 located at the other side of the hook assembly 1 and parallel to the first hook plate 31 and symmetrically disposed, the pulley assembly 2 includes a pulley shaft 21 penetrating the first hook plate 31 and the second hook plate 32, a pulley block sleeved outside the pulley shaft 21, a pulley cover 22 disposed at the periphery of the bottom end of the pulley block, and fixing members 4 disposed at both ends of the pulley shaft 21, the pulley block includes a plurality of pulleys 23, the plurality of pulleys 23 are disposed in parallel, a first bearing 24 is disposed between the pulley 23 and the pulley shaft 21, a spacer 25 is disposed between two adjacent pulleys 23, and a spacer ring 26 is disposed between the pulley 23 and the fixing member 4, the separating ring 26 is located between the pulley cover 22 and the pulley shaft 21, one end of the pulley cover 22 close to the separating ring 26 is provided with an annular elastic member 28, the periphery of the separating ring 26 is provided with an annular groove 27, and the annular groove 27 is in concave-convex fit with the annular elastic member 28.

Specifically, the fixing parts 4 are located on two sides of the pulley cover 22 and used for fixing the pulley shaft 21 and the pulley cover 22, the pulley 23 is connected with a crane hoisting mechanism in a sliding mode through a steel wire, the top end of the pulley cover 22 can be penetrated by the steel wire, the bottom end of the pulley cover 22 is respectively and fixedly connected with the first hook plate 31 and the second hook plate 32, the spacer bush 25 is located between the first hook plate 31 or/and the second hook plate 32 and the pulley shaft 21, the pulleys 23 are symmetrically arranged on the pulley shaft 21, and the central line of the pulley shaft 21 coincides with the central line of the hook assembly 1.

In the actual use process, the pulley 23 is connected with a winding drum and a fixed pulley assembly on the crane in a sliding mode through a steel wire, the spacer bush 25 is additionally arranged, and the stability of the pulley 23 in the use process is improved. When the crane lifts the goods, the goods are heavy, the hook component 1 may shake under the action of the gravity of the goods during lifting, the hook component 1 may drive the connecting piece 3 and the pulley cover 22 connected with the hook component to shake during shaking, the separating ring 26 is arranged between the pulley cover 22 and the pulley shaft 21, the pulley cover 22 is prevented from directly transmitting shaking or displacement to the pulley shaft 21, the stability of the pulley component 2 in the using process is influenced, meanwhile, the pulley cover 22 is prevented from being driven to deflect and driving the connecting piece 3 connected with the pulley cover 22 and the hook component 1 to shake during the rotating motion process of the pulley component 2, and the stability and the accuracy of the lifting hook device are improved in the using process; the annular elastic part 28 and the annular groove 27 are additionally arranged, in the process of assembling the pulley cover 22 and the pulley shaft 21, the annular elastic part 28 is extruded by the side wall of the separating ring 26, so that the annular elastic part 28 contracts in the direction away from the separating ring 26 and stores elastic potential energy, the annular elastic part 28 does not block the sliding of the pulley cover 22 on the separating ring 26, when the annular elastic part 28 moves to the upper part in the annular groove 27, the annular elastic part 28 releases the elastic potential energy and extends into the annular groove 27 of the separating ring 26, the annular elastic part 28 has the functions of limiting and guiding the pulley cover 22, the assembly of the pulley cover 22 and the pulley shaft 21 is convenient, the pulley cover 22 is prevented from sliding or displacing on the separating ring 26 under the action of external force, the stability of the pulley cover 22 and the pulley shaft 21 in the assembling process is improved, and the connecting structure of the pulley cover 22 and the pulley shaft 21 is simple, the pulley cover 22 which is not in a top-sealed type is adopted, so that the weight of the pulley cover 22 is reduced, the structure of the pulley cover 22 is simplified, and the production cost is reduced.

Further, the fixing member 4 includes a round nut 41 screwed with the pulley shaft 21 and a washer located between the round nut 41 and the separating ring 26.

Specifically, the washer is abutted against the separating ring 26, and the washer is sleeved outside the pulley shaft 21; in the practical use process, add round nut 41, round nut 41 is contradicted with spacer ring 26 through the packing ring, and two round nuts 41 are fixed the both ends of pulley shaft 21 outside the both ends of sliding closure respectively, avoid the hoist to lift by crane the in-process of goods, produce between pulley shaft 21 and the pulley closure 22 and rock or the displacement for pulley shaft 21 deviates from in the pulley closure 22, influence stability and the security in the hoist use.

Further, the hook assembly 1 includes a hook 11, a hook fixing member 12 connected to a top end of the hook 11, a hook base 13 sleeved outside the top end of the hook 11 and respectively connected to bottom ends of the first hook plate 31 and the second hook plate 32, and a second bearing 14 located between the hook base 13 and the hook fixing member 12, wherein the hook fixing member 12 is used for locking the hook 11 on the hook base 13, and the hook base 13 is located below the hook fixing member 12.

In actual use, two ends of the hook base 13 are respectively inserted into the first hook plate 31 and the second hook plate 32 and detachably connected with the first hook plate 31 and the second hook plate 32. The second bearing 14 can adopt a one-way thrust ball bearing, so that the lifting hook 11 can rotate 360 degrees in the horizontal plane, the lifting hook 11 can be used for lifting goods placed at various different angles, the application range is wide, the assembly and the maintenance of the lifting hook assembly 1 are easy, and the production cost is low.

Further, the number of the pulleys 23 is 4, two of the pulleys 23 are located between the first hook plate 31 and the second hook plate 32, and the other two pulleys 23 are located outside the first hook plate 31 and the second hook plate 32, respectively.

In the actual use process, set up pulley 23 to 4 for lifting hook 11 operates more steadily when the hoist and mount goods.

Furthermore, a plurality of first threaded holes 15 are formed in the circumferential direction of the hook fixing piece 12, and a second threaded hole corresponding to the first threaded hole 15 is formed in the first hook plate 31 or/and the second hook plate 32, and the first threaded hole 15 and the second threaded hole are sequentially inserted into each other through a locking piece.

Specifically, screw hole one 15 and screw hole two are on same level, and screw hole one 15 equipartition is in the periphery of lifting hook mounting 12, and the quantity of screw hole one 15 can set up according to lifting hook mounting 12's actual size, the screw thread in screw hole one 15 is unanimous with the screw thread in the screw hole two. In the practical use process, when the crane lifts the goods, the lifting hook 11 can be rotated to a proper position to facilitate the connection between the goods and the lifting hook 11, after the goods is stably connected with the lifting hook 11, in order to avoid the rotation of the goods lifted in the air, the lifting hook 11 can be slightly rotated to drive the lifting hook fixing part 12 connected with the lifting hook 11 to rotate, so that the threaded hole one 15 on the lifting hook fixing part 12 is communicated with the threaded hole two, and is sequentially screwed with the threaded hole two and the threaded hole one 15 through the locking part, the relative positions of the lifting hook fixing part 12 and the lifting hook plate one 31 or/and the lifting hook plate two 32 are fixed, so that the relative positions of the lifting hook 11 and the lifting hook plate one 31, the lifting hook plate two 32 or the pulley cover 22 are fixed, the rotation or displacement of the goods in the lifting process is further limited by limiting the rotation of the lifting hook 11, and the subsequent placement or loading of the goods is influenced, the structure of the utility model is simple, and the processing procedures of the first threaded hole 15 and the second threaded hole are simple, thus simplifying the structures of the hook fixing piece 12 and the connecting piece 3; can be widely applied to actual production.

Further, the bottom end of the hook 11 is provided with an anti-slip buckle 16.

After the lifting hook 11 is connected with the goods, the anti-skid buckle 16 is additionally arranged, so that the goods are prevented from falling off from the lifting hook 11, and the stability of the lifting hook assembly 1 during the process of lifting the goods is improved.

Further, a projection 17 is arranged on one side of the hook base 13 close to the hook 11, and the second bearing 14 is located between the projection 17 and the hook fixing part 12.

The convex block 17 is additionally arranged to further limit the position of the second bearing 14, and the hook fixing part 12 improves the stability and accuracy of the hook fixing part 12 and the hook base 13 in the using process through the second bearing 14 and the hook base 13.

All the technical features in the embodiment can be freely combined according to actual needs.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Claims

1. A hook assembly for a crane, comprising: comprises a hook component (1), a pulley component (2) and a connecting piece (3) connected with the hook component (1) and the pulley component (2), wherein the connecting piece (3) comprises a first hook plate (31) positioned on one side of the hook component (1) and a second hook plate (32) positioned on the other side of the hook component (1) and parallel to the first hook plate (31) and symmetrically arranged, the pulley component (2) comprises a pulley shaft (21) penetrating through the first hook plate (31) and the second hook plate (32), a pulley block sleeved outside the pulley shaft (21), a pulley cover (22) arranged on the periphery of the bottom end of the pulley block and fixing pieces (4) arranged at two ends of the pulley shaft (21), the pulley block comprises a plurality of pulleys (23) which are arranged in parallel, a first bearing (24) is arranged between the pulley (23) and the pulley shaft (21), and a spacer bush (25) is arranged between two adjacent pulleys (23), a separating ring (26) is arranged between the pulley (23) and the fixing piece (4), the separating ring (26) is located between the pulley cover (22) and the pulley shaft (21), an annular elastic piece (28) is arranged at one end, close to the separating ring (26), of the pulley cover (22), an annular groove (27) is formed in the separating ring (26), and the annular groove (27) is in concave-convex fit with the annular elastic piece (28).

2. A hook device for a crane as claimed in claim 1, wherein: the fixing piece (4) comprises a round nut (41) in threaded connection with the pulley shaft (21) and a gasket positioned between the round nut (41) and the separating ring (26).

3. A hook device for a crane as claimed in claim 1, wherein: lifting hook subassembly (1) includes lifting hook (11), connects in lifting hook mounting (12) on lifting hook (11) top, overlaps and locates lifting hook seat (13) and bearing two (14) between lifting hook seat (13) and lifting hook mounting (12) that lifting hook (11) top is outer and be connected with the bottom of lifting hook board (31) and lifting hook board two (32) respectively, lifting hook mounting (12) are used for with lifting hook (11) lock solid on lifting hook seat (13), lifting hook seat (13) are located lifting hook mounting (12) below.

4. A hook device for a crane as claimed in claim 1, wherein: the number of the pulleys (23) is 4, two pulleys (23) are located between the first hook plate (31) and the second hook plate (32), and the other two pulleys (23) are located on the outer sides of the first hook plate (31) and the second hook plate (32) respectively.

5. A hook device for a crane as claimed in claim 3, wherein: the circumference of lifting hook mounting (12) is provided with a plurality of screw hole one (15), lifting hook board one (31) or/and lifting hook board two (32) are provided with the screw hole two that corresponds with screw hole one (15) position, insert in locating screw hole two and screw hole one (15) in proper order through the locking part.

6. A hook device for a crane as claimed in claim 3, wherein: the bottom end of the lifting hook (11) is provided with an anti-skid buckle (16).

7. A lifting hook device for a crane as claimed in claim 3 or 5, wherein: a convex block (17) is arranged on one side, close to the lifting hook (11), of the lifting hook seat (13), and the second bearing (14) is located between the convex block (17) and the lifting hook fixing part (12).