CN116513947A

CN116513947A - Lifting hook

Info

Publication number: CN116513947A
Application number: CN202310499039.1A
Authority: CN
Inventors: 倪骁宇; 强少华; 高伟东; 刘雷; 李敢; 程实
Original assignee: China Shipbuilding NDRI Engineering Co Ltd
Current assignee: China Shipbuilding NDRI Engineering Co Ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-08-01

Abstract

The invention relates to a lifting hook, which uses a connecting part to connect with a pulley and a hook part respectively, and the pulley is arranged at two ends of at least two bearing shafts respectively, so that the load is uniformly distributed on the at least two bearing shafts; and the extending direction of the bearing shaft and the arrangement direction of the hook bodies are arranged in the same direction, and when at least two hook bodies of the hook parts lift at least two weights, the gravity of the two weights corresponds to the two ends of the bearing shaft. Compared with the prior art, the invention can promote the stability of lifting while promoting the quantity of lifted weights, and has higher bearing capacity and lifting safety.

Description

Lifting hook

Technical Field

The invention relates to the field of lifting equipment, in particular to a lifting hook.

Background

The lifting machinery is a multi-action working device for vertically lifting and horizontally carrying heavy objects within a certain range, and the lifting hook is one of parts of a crane and is commonly used for lifting the heavy objects.

With the development of industry, the requirements of modern industrial manufacturing such as huge equipment, buildings and ultra-large ships are raised, and the transportation of heavy components is a new challenge. For example, ultra-large ships now use modular construction to make hull sections larger and larger, and the requirements for the lifting capacity of the lifting equipment are also increasing.

In the prior art, the stress conditions of all shaft sections of various shafts in the lifting hook are different and complex, and the lifting hook is one of easily damaged parts, and needs more frequent maintenance so as to ensure engineering safety. Moreover, it has been difficult to meet the requirements by simply increasing the size of the components in the lifting hook to obtain a greater lifting load and a greater number of lifts.

Accordingly, there is a need for a new lifting hook that ameliorates some of the above-described problems associated with the prior art.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a lifting hook which can improve the load and the safety of lifting.

The aim of the invention can be achieved by the following technical scheme:

the invention provides a lifting hook, comprising: a wheel part, a hook part and a connecting part; the wheel part comprises at least four pulleys, is used for being matched with the cable and moves up and down under the control of the cable; the hook part is used for lifting or placing a weight; the connecting part is respectively connected with the wheel part and the hook part, so that the hook part can synchronously lift and move on the wheel part; the connecting part comprises a shaft body, the shaft body comprises at least two bearing shafts, and the pulleys are respectively arranged at two ends of the bearing shafts; the hook part comprises at least two hook bodies, and the arrangement direction of the hook bodies is the same as the extending direction of the bearing shaft

Compared with the prior art, the lifting hook provided by the invention has the advantages that the pulleys and the hook parts are respectively connected by the connecting parts, and the pulleys are respectively arranged at the two ends of at least two bearing shafts, so that the load is uniformly distributed on the at least two bearing shafts, and the bearing capacity and the lifting safety of the bearing shafts are further improved. In addition, the extending direction of the bearing shaft and the arrangement direction of the hook bodies are arranged in the same direction, when at least two of the hook bodies of the hook parts hoist at least two weights, the gravity of the two weights corresponds to the two ends of the bearing shaft, under the condition of heavy load, the quantity of the hoisting weights is promoted, and meanwhile, the stability of hoisting is promoted, so that the safety of hoisting is further promoted.

Optionally, the connecting portion further includes a first shaft plate and a second shaft plate, the first shaft plate and the second shaft plate are arranged at intervals, and the bearing shaft is arranged along the arrangement direction of the first shaft plate and the second shaft plate and is respectively connected with the first shaft plate and the second shaft plate. The pulley has the beneficial effects that the load bearing points generated by lifting the weight by the hook part are beneficial to approaching to the pulleys at the two ends of the bearing shaft, so that the stress condition of the bearing shaft is improved, and the lifting load is improved.

Optionally, the wheel part further comprises a wheel frame and a wheel axle; at least two pulleys are rotatably arranged on the wheel shaft, and the wheel shaft is connected with the bearing shaft through the wheel frame. The wheel carrier has the beneficial effects that at least two pulleys on the wheel shaft can be connected to the two ends of the bearing shaft through the wheel carrier, the number of the pulleys is increased, the layout of parts on the bearing shaft is facilitated, and the structure is more compact.

Optionally, the shaft body further includes a connecting shaft, the connecting shaft is disposed along the arrangement direction of the first shaft plate and the second shaft plate and is respectively connected to the first shaft plate and the second shaft plate, and the hook portion is disposed on the connecting shaft. The load bearing point of the hook part lifting weight is changed from the center of the bearing shaft to the positions of the first shaft plate and the second shaft plate, so that the stress condition of the bearing shaft is improved, and the lifting load is improved.

Optionally, the connecting axle is last to be equipped with the lifting hook hole, hook portion still includes:

the columnar part is arranged in the lifting hook hole, and the hook body is arranged at the end part of the columnar part;

the fixing part is arranged at the end part of the columnar part, which is far away from one side of the hook body, and comprises a protrusion extending along the radial direction of the columnar part and used for abutting against the surface of one side of the connecting shaft, which is opposite to the hook body.

Optionally, the fixing portion is in threaded fit with the columnar portion.

Optionally, a bearing is arranged between the protrusion and the connecting shaft, and the bearing is a roller bearing.

Optionally, the hook portion further includes a bearing cover plate, and the bearing cover plate is connected with the protrusion and the surface of the connecting shaft respectively, and is used for bearing dust prevention.

Optionally, a sleeve is arranged between the hook hole and the columnar portion. The lifting hook has the beneficial effects that the abrasion between the outer wall of the columnar part and the inner wall of the lifting hook hole is reduced.

Optionally, the end region of the shaft body is provided with a groove extending along the circumferential direction thereof for axial fixation of the shaft body or parts on the shaft body.

Drawings

FIG. 1 is a schematic view of a lifting hook in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the lifting hook of FIG. 1 from a view in the direction of view V;

FIG. 3 is a schematic view of the position of the load bearing axle, wheel carriage and pulley shown in FIG. 2;

FIG. 4 is a schematic view of the positions of the connecting shaft, the first shaft plate, the second shaft plate and the hook body shown in FIG. 2;

fig. 5 is a schematic structural view of the columnar portion shown in fig. 4 from an axial perspective.

Reference numerals:

1. a wheel section; 101. a pulley; 102. a wheel axle; 103. a wheel carrier; 2. a connection part; 201. a bearing shaft; 202. a connecting shaft; 203. a shaft sleeve; 3. a hook portion; 301. a hook body; 302. a columnar portion; 3021. an anti-loosening plate; 303. a fixing part; 3031. a protrusion; 41. a first shaft plate; 42. a second axle plate; 51. a first clamping plate; 52. a second clamping plate; 6. a bearing; 7. a bearing cover plate; 8. a sleeve; 9. and a baffle.

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.

The embodiment of the invention provides a lifting hook.

FIG. 1 is a schematic view of a lifting hook in accordance with an embodiment of the present invention; fig. 2 is a schematic view of the lifting hook of fig. 1 from a view in direction V.

Referring to fig. 1 and 2, the lifting hook includes: a wheel part 1, a hook part 3 and a connecting part 2; the wheel part 1 comprises at least four pulleys 101 for being matched with a cable and moving up and down under the control of the cable; the hook part 3 is used for lifting or placing a heavy object; the connecting part 2 is respectively connected with the wheel part 1 and the hook part 3, so that the hook part 3 moves synchronously in a lifting way on the wheel part 1; the connecting part 2 comprises a shaft body, the shaft body comprises at least two bearing shafts 201, and the pulleys 101 are respectively arranged at two ends of the bearing shafts 201; the hook 3 includes at least two hooks 301, and the arrangement direction of the hooks 301 is the same as the extending direction of the bearing shaft 201.

In some embodiments of the invention, referring to fig. 2, the wheel part 1 further comprises a wheel carrier 103 and a wheel axle 102; at least two pulleys 101 are rotatably disposed on the axle 102, and the axle 102 is disposed in an axle hole on the wheel frame 103 and is connected to the bearing shaft 201 through the wheel frame 103.

In some embodiments of the present invention, referring to fig. 1 and 2, the wheel unit 1 includes sixteen pulleys 101, four pulleys 101 are arranged in a group on one wheel axle 102, and the wheel axle 102 is connected to one end of the bearing shaft 201 through the wheel frame 103.

In some embodiments of the present invention, referring to fig. 1 and 2, the number of the wheel frames 103 and the number of the wheel shafts 102 are four, the four pulleys 101 are arranged on one wheel shaft 102 in a group, and the four wheel shafts 102 are respectively connected to two ends of two bearing shafts 201 through the four wheel frames 103.

In some embodiments of the present invention, the end of the axle 102 is fixed by a round nut retainer ring.

FIG. 3 is a schematic view of the position of the load bearing axle, wheel carriage and pulley shown in FIG. 2; fig. 4 is a schematic view showing positions of the connecting shaft, the first shaft plate, the second shaft plate and the hook body shown in fig. 2.

In some embodiments of the present invention, referring to fig. 2 and fig. 4, the hook 3 includes two hooks 301, and the arrangement direction of the hooks 301, that is, the connection direction of the hanging points of the hooks 301 for hanging the weight, is the same as the extending direction of the bearing shaft 201, that is, the directions a and B are both horizontal directions.

In some embodiments of the present invention, referring to fig. 2 and 3, the connecting portion 2 further includes a first shaft plate 41 and a second shaft plate 42, the first shaft plate 41 and the second shaft plate 42 are spaced apart, and the bearing shaft 201 is disposed along an arrangement direction of the first shaft plate 41 and the second shaft plate 42 and is connected to the first shaft plate 41 and the second shaft plate 42, respectively.

For example, referring to fig. 2, the first shaft plate 41 and the second shaft plate 42 may be arranged in parallel in the direction of a drawing, and the bearing shaft 201 may be disposed in the direction of a drawing.

In some embodiments of the present invention, referring to fig. 3, a shaft sleeve 203 is disposed on the bearing shaft 201, and two ends of the shaft sleeve 203 respectively abut against the first shaft plate 41 and the second shaft plate 42.

In some embodiments, referring to fig. 3, the first shaft plate 41 and the second shaft plate 42 are provided with holes for accommodating the bearing shaft 201, the shaft ends of the bearing shaft 201 penetrate through the first shaft plate 41 and the second shaft plate 42 from the holes, and the wheel frames 103 are respectively arranged on the shaft ends of the bearing shaft 201 penetrating through the first shaft plate 41 and the second shaft plate 42.

In other embodiments, two ends of the bearing shaft 201 may be respectively connected to two adjacent surfaces of the first shaft plate 41 and the second shaft plate 42, where the bearing shaft 201 is located between the first shaft plate 41 and the second shaft plate 42, and the wheel frame 103 is respectively disposed at two ends of the bearing shaft 201 and adjacent to the first shaft plate 41 and the second shaft plate 42.

In some embodiments of the invention, the end region of the shaft body is provided with a groove extending along the circumferential direction thereof for axial fixation of the shaft body or parts on the shaft body.

In some embodiments, the connection portion includes a clip that is embedded in the groove to effect axial positioning of the shaft and components on the shaft.

In some embodiments, referring to fig. 1 and 3, the end region of the bearing shaft 201 is provided with a first groove (not shown) extending along the circumferential direction of the bearing shaft 201, and the connecting plate includes a first clamping plate 51, and the first clamping plate 51 is embedded in the first groove and fixed to the wheel frame 103 by a bolt, so that the wheel frame 103 is positioned by the first clamping plate 51 and the first shaft plate 41 or the second shaft plate 42 in the axial direction of the bearing shaft 201.

In some embodiments of the present invention, referring to fig. 1, the connection portion 2 includes a shaft body, where the shaft body includes two bearing shafts 201, and the bearing shafts 201 are disposed in parallel.

In some embodiments, referring to fig. 4, the hook 3 includes two hooks 301, the two hooks 301 are symmetrically disposed along the axis of the columnar portion 302, the two hooks 301 are bent in opposite directions, and the two hooks 301 are used for connecting a hanging point of a weight

In some embodiments of the present invention, referring to fig. 3, the wheel frame 103 is formed by symmetrically bending and welding two plate parts, a thick steel sleeve is embedded in the lower opening, a diaphragm is arranged in the middle, and a binding is arranged at the edge.

In some embodiments of the invention, the cable threading system of different multiplying power can be adapted by adjusting the number of pulleys 101.

In some cases, the cable engaged by the pulley 101 is a wire rope.

In some embodiments of the present invention, referring to fig. 2 and 4, the shaft body further includes a connection shaft 202, the connection shaft 202 is disposed along an arrangement direction of the first shaft plate 41 and the second shaft plate 42, i.e., a direction a, and is connected to the first shaft plate 41 and the second shaft plate 42, respectively, and the hook 3 is disposed on the connection shaft 202.

In some embodiments, referring to fig. 1 and 4, the end region of the connecting shaft 202 is provided with a second groove (not shown) extending along the circumference of the bearing shaft 201, and the second clamping plate 52 includes a second clamping plate 52, and the second clamping plate 52 is embedded in the second groove and fixed to the first shaft plate 41 or the second shaft plate 42 by a bolt, so that the connecting shaft 202 is positioned in the axial direction by the second clamping plate 52 and the first shaft plate 41 or the second shaft plate 42.

In some embodiments of the present invention, referring to fig. 1, a certain level difference exists between the connecting shaft 202 and the bearing shaft 201, so that the two connecting shafts 202 are arranged in a triangle on the plane perpendicular to the axis of the bearing shaft 201.

In some embodiments of the present invention, referring to fig. 4, a central area of the connecting shaft 202 is provided with a hook hole, and the hook 3 further includes: a columnar portion 302 and a fixing portion 303; the columnar portion 302 is disposed in the hook hole, two ends of the columnar portion 302 extend out of the connecting shaft 202, and the hook body 301 and the fixing portion 303 are disposed at two ends of the columnar portion 302 respectively.

In some embodiments, referring to fig. 4, the fixing portion 303 is a hollow cylindrical part, the inner surface of the hollow cylindrical part has an internal thread, and the outer surface of the upper end of the cylindrical portion 302 is provided with an external thread matching with the internal thread, so as to realize the detachable connection between the fixing portion 303 and the cylindrical portion 302.

In some embodiments, the fixing portion 303 is engaged with the columnar portion 302 through trapezoidal threads.

In some embodiments, referring to fig. 4, the end of the fixing portion 303 near the hook body 301 includes a protrusion 3031 extending along a radial direction of the columnar portion 302, where the protrusion 3031 abuts against a surface of the connecting shaft 202 opposite to the side of the hook body 301, so that the hook body 301 and the columnar portion 302 are disposed on the connecting shaft 202 under the action of gravity.

In some embodiments, the protrusions 3031 may be punctiform protrusions 3031 extending radially along the cylindrical portion 302.

In some embodiments, the protrusions 3031 may be annular protrusions 3031 extending radially along the columnar portion 302, i.e., the protrusions 3031 surround the sides of the fixing portion 303.

In some embodiments of the present invention, referring to fig. 4, a bearing 6 is disposed between the protrusion 3031 and the connection shaft 202, and the bearing 6 is a roller bearing, so that the fixing portion 303 rotates on the connection shaft 202, and thus the hook 301 can rotate with the fixing portion 303.

In some embodiments of the present invention, referring to fig. 4, the hook 3 further includes a bearing cover 7, and the bearing cover 7 is connected to the protrusions 3031 and the surface of the connection shaft 202, respectively, for dust prevention of the bearing 6.

Specifically, referring to fig. 4, the bearing cover 7 has one end connected to the protrusion 3031 and the other end connected to the connection shaft 202, so that the bearing 6 between the protrusion 3031 and the connection shaft 202 is located in a closed space, thereby improving the life of the bearing 6.

In some embodiments of the present invention, referring to fig. 4, a sleeve 8 is disposed between the hook hole and the pillar portion 302, and an end portion of the sleeve 8 has a bend along a radial direction thereof, so that the sleeve 8 is fixed on the connection shaft 202.

In some embodiments, the material of the sleeve 8 is an engineering plastic alloy.

In some embodiments of the present invention, referring to fig. 4, a baffle plate 9 is disposed at the opening of the hook body 301, for preventing the weight from unhooking, and the baffle plate 9 is controlled by a torsion spring.

In some embodiments of the invention, the lifting hook is applied to a gantry crane.

In some embodiments of the present invention, the end surface of the axle 102 is provided with oil filling holes for guiding in lubricating oil, the oil filling holes are communicated with a plurality of oil outlets, and the number of the oil outlets is consistent with the number of the pulleys 101 and the positions of the oil outlets are in one-to-one correspondence, so that the pulleys 101 on any one of the axles 102 are configured with the oil outlet for lubrication.

In some embodiments of the present invention, referring to fig. 5, an end surface of the columnar portion 302 on a side away from the hook 301 is provided with a release preventing plate 3021, the release preventing plate 3021 is fixedly connected to the columnar portion 302, and the release preventing plate 3021 abuts against an end portion of the fixing portion 303, so that the columnar portion 302 and the fixing portion 303 are relatively fixed.

In some embodiments, the end surfaces of the columnar portion 302 and the fixing portion 303 are provided with an anti-loosening plate groove, and the anti-loosening plate 3021 is disposed in the anti-loosening plate groove.

In some embodiments, the anti-loosening plate 3021 is shaped to fit the anti-loosening plate slot.

In some embodiments, the anti-loosening plate slots are rectangular.

In some embodiments, the anti-loosening plate 3021 is threadably coupled to the post 302.

In some embodiments, at least two sets of bolts are disposed along a radial direction of the cylindrical portion to achieve the threaded connection.

The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. A lifting hook, comprising:

a wheel part (1) comprising at least four pulleys (101) for cooperation with the cable and for lifting movement under the control of the cable;

a hook (3) for lifting or placing a weight;

a connecting part (2) which connects the wheel part (1) and the hook part (3) respectively, and enables the hook part (3) to synchronously lift and move on the wheel part (1);

the connecting part (2) comprises a shaft body, the shaft body comprises at least two bearing shafts (201), and the pulleys (101) are respectively arranged at two ends of the bearing shafts (201); the hook part (3) comprises at least two hook bodies (301), and the arrangement direction of the hook bodies (301) is the same as the extending direction of the bearing shaft (201).

2. The lifting hook according to claim 1, wherein the connecting portion (2) further comprises a first shaft plate (41) and a second shaft plate (42), the first shaft plate (41) and the second shaft plate (42) are disposed at intervals, and the bearing shaft (201) is disposed along the arrangement direction of the first shaft plate (41) and the second shaft plate (42) and is connected to the first shaft plate (41) and the second shaft plate (42), respectively.

3. A lifting hook according to claim 2, characterized in that the wheel part (1) further comprises a wheel carrier (103) and a wheel axle (102);

at least two pulleys (101) are rotatably arranged on the wheel shaft (102), and the wheel shaft (102) is connected with the bearing shaft (201) through the wheel frame (103).

4. A lifting hook according to claim 3, wherein the shaft body further comprises a connecting shaft (202), the connecting shaft (202) being arranged along the arrangement direction of the first shaft plate (41) and the second shaft plate (42) and being connected to the first shaft plate (41) and the second shaft plate (42), respectively, the hook portion (3) being arranged at the connecting shaft (202).

5. The lifting hook according to claim 4, wherein the connecting shaft (202) is provided with a hook hole, and the hook part (3) further comprises:

a columnar portion (302) provided in the hook hole, the hook body (301) being provided at an end portion of the columnar portion (302);

the fixing part (303) is arranged at the end part of the columnar part (302) away from one side of the hook body (301), and the fixing part (303) comprises a protrusion (3031) extending along the radial direction of the columnar part (302) and is used for abutting against the surface of one side of the connecting shaft (202) away from the hook body (301).

6. A lifting hook according to claim 5, characterized in that the fixing portion (303) is screw-fitted with the cylindrical portion (302).

7. The lifting hook according to claim 6, characterized in that a bearing (6) is arranged between the protrusion (3031) and the connecting shaft (202), the bearing (6) being a roller bearing.

8. The lifting hook according to claim 7, characterized in that the hook part (3) further comprises a bearing (6) cover plate, which bearing (6) cover plate connects the surfaces of the protrusion (3031) and the connecting shaft (202), respectively, for dust protection of the bearing (6).

9. A lifting hook according to claim 5, characterized in that a sleeve (8) is provided between the hook bore and the cylindrical portion (302).

10. A lifting hook as claimed in claim 1, wherein the end region of the shaft body is provided with a groove extending circumferentially thereof for axial securement of the shaft body or a component on the shaft body.