A crane with hook stress compensation

Abstract

The invention discloses a crane with hook stress compensation, comprising: a column, a boom, a main hook and an auxiliary hook, a boom is arranged on one side of an outer wall of the main shaft, a winch is arranged on one side of a bottom of the boom, a steel wire rope is wound on the winch, a pulley block is arranged at the bottom of the steel wire rope, brackets are arranged on both sides of an outer wall of a middle part of the pulley block, a support plate is arranged between the bottoms of the brackets, and a connecting shaft is arranged in the center of the connecting plate. When lifting goods, the present invention lifts goods through the main hook, and assists in lifting goods on both sides through the auxiliary hook. During the lifting and moving process, the shaking of the goods is buffered by the cooperation of the spring sleeve rod and the auxiliary hook, and the impact on the main hook is reduced. At the same time, when the main hook is impacted, the spherical pad and the rubber pad between the connecting shaft and the supporting plate are used for buffering, so as to further reduce the impact on the main hook, reduce the stress concentration at the main hook hanging position, and ensure the service life and safety of the main hook.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, in particular to a crane with hook stress compensation. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called an overhead crane, an overhead crane, a crane, etc. The lifting machines used in bridge construction projects can generally be divided into four categories according to their structure and performance: light and small lifting equipment, bridge-type lifting machinery, boom-type cranes, and cable cranes. Light and small lifting equipment include: jacks, pneumatic hoists, electric hoists, balance hoists (also known as balance cranes), winches, etc. Bridge-type lifting machinery includes beam cranes, etc. Boom-type cranes include fixed slewing cranes, tower cranes, truck cranes, tire cranes, crawler cranes, etc. Cable cranes include elevators, etc.

[0003] In the prior art, the hook is a special device used when the crane is lifting and traveling. In addition, due to its complex structure, sudden cross-section changes, and uneven structural shape, the hook experiences shaking and impact under traveling conditions, showing obvious stress concentration, which can easily cause fatigue damage to the hook and its connecting shaft. Summary of the invention

[0004] The purpose of the present invention is to provide a crane with hook stress compensation to solve the problem raised in the above background technology that the hook undergoes shaking and impact under traveling conditions, exhibits obvious stress concentration, and easily causes fatigue damage to the hook and its connecting shaft.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a crane with hook stress offset, comprising: a column, a boom, a main hook and an auxiliary hook, a support frame is provided on the outer wall of the upper half of the column, a main shaft is provided between the support frames and located on one side of the column, a boom is provided on one side of the outer wall of the main shaft, a winch is provided on one side of the bottom of the boom, a steel wire rope is wound around the winch, a pulley block is provided at the bottom of the steel wire rope, brackets are provided on both sides of the middle outer wall of the pulley block, a support plate is provided between the bottoms of the brackets, a connecting shaft is provided in the center of the supporting plate, a main hook is provided at one end of the bottom of the connecting shaft, a steel pad is provided at the top of the support plate, a rubber pad is provided on the top of the steel pad, a spherical pad is provided on the top of the rubber pad, a pressure block is provided on the top of the spherical pad, spring sleeve rods are provided on both sides of the outer wall of the bottom of the pulley block, and an auxiliary hook is provided at the end of the spring sleeve rod away from the pulley block.

[0006] Preferably, a driving motor is provided at the top of the support frame above the main shaft, and one end of the power output shaft of the driving motor is fixedly connected to the main shaft.

[0007] Preferably, a remote control is provided on one side of the outer wall at the bottom of the winch.

[0008] Preferably, a pier head is provided at the top of the connecting shaft above the pressing block.

[0009] Preferably, gaskets are provided on the upper and lower sides of the pressing block.

[0010] Preferably, the rubber pad is convex in the center, and the top of the rubber pad is in contact with the inner wall of the spherical pad.

[0011] Preferably, a through hole is provided in the center of the pressing block, the spherical pad, the rubber pad and the steel pad.

[0012] Preferably, the end of the spring sleeve rod is rotatably connected to the pulley block via a hinge.

[0013] Preferably, a reinforcing rib is provided at the bottom of the main hook at the hanging groove, and a spring is provided on one side of the opening of the main hook to prevent disengagement.

[0014] Preferably, a traction pulley is provided on one side of the bottom of the boom, a traction rope is provided between the traction pulleys, and the traction pulley located on one side is fixedly connected to the winch.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention realizes that when a crane with hook stress compensation is used, the main hook is used to lift the goods, and the auxiliary hook is used to assist in lifting the goods on both sides. During the lifting operation, the spring sleeve rod and the auxiliary hook cooperate to buffer the shaking of the goods and reduce the impact on the main hook. At the same time, when the main hook is impacted, the spherical pad and the rubber pad between the connecting shaft and the support plate are used to buffer the impact, further reducing the impact on the main hook, reducing the stress concentration at the main hook hanging point, and ensuring the service life and safety of the main hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional view of the overall main structure of the present invention;

[0018] Figure 2 It is an enlarged schematic diagram of the main hook connection structure of the present invention;

[0019] Figure 3 It is an enlarged cross-sectional schematic diagram of the main hook connection structure of the present invention;

[0020] Figure 4 It is an enlarged schematic diagram of the auxiliary hook connection structure of the present invention.

[0021] In the figure: 1-column; 2-support frame; 3-drive motor; 4-main shaft; 5-winch; 501-wire rope; 6-jib; 601-traction pulley; 602-traction rope; 603-buffer; 7-main hook; 8-remote control; 9-pulley block; 10-bracket; 11-coupling shaft; 12-pressure block; 13-spherical pad; 14-rubber pad; 15-steel pad; 16-support plate; 17-auxiliary hook; 18-spring sleeve rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention provides a technical solution: a crane with hook stress compensation, comprising: a column 1, a boom 6, a main hook 7 and an auxiliary hook 17, the upper outer wall of the column 1 is connected to a support frame 2 by screws, a main shaft 4 is connected to one side of the column 1 between the support frames 2 by a bearing, a boom 6 is connected to one side of the outer wall of the main shaft 4 by bolts, a winch 5 is slidably connected to one side of the bottom of the boom 6, a steel wire rope 501 is wound around the winch 5, a pulley block 9 is wound around the bottom of the steel wire rope 501, and both sides of the middle outer wall of the pulley block 9 are connected by A bracket 10 is connected through the rotating shaft, a support plate 16 is welded between the bottom of the bracket 10, a connecting shaft 11 is inserted in the center of the support plate 16, a main hook 7 is integrally formed at one end of the bottom of the connecting shaft 11, a steel pad 15 is clamped on the top of the support plate 16, a rubber pad 14 is clamped on the top of the steel pad 15, a spherical pad 13 is clamped on the top of the rubber pad 14, a pressure block 12 is clamped on the top of the spherical pad 13, and spring sleeve rods 18 are connected to both sides of the outer wall of the bottom of the pulley block 9 through hinges, and an auxiliary hook 17 is welded on the end of the spring sleeve rod 18 away from the pulley block 9.

[0024] The top of the support frame 2 is located above the main shaft 4 and is connected to a drive motor 3 by screws. One end of the power output shaft of the drive motor 3 is fixedly connected to the main shaft 4. A remote control 8 is provided on one side of the bottom outer wall of the winch 5. A pier head is provided on the top of the connecting shaft 11 above the pressure block 12.

[0025] Gaskets are provided on the upper and lower sides of the pressing block 12. The rubber pad 14 is convex in the center. The top of the rubber pad 14 contacts the inner wall of the spherical pad 13. A through hole is opened in the center of the pressing block 12, the spherical pad 13, the rubber pad 14 and the steel pad 15.

[0026] The end of the spring sleeve rod 18 is rotatably connected to the pulley block 9 through a hinge, a reinforcing rib is provided at the bottom of the main hook 7 at the hanging groove, a spring anti-drop buckle is connected to one side of the opening of the main hook 7 through a rotating shaft, a traction pulley 601 is slidably connected to one side of the bottom of the boom 6, a traction rope 602 is clamped between the traction pulleys 601, and the traction pulley 601 located on one side is fixedly connected to the winch 5.

[0027] Working principle: When the crane with hook stress offset is used, the main shaft 4 is driven to rotate by the driving motor 3, and the boom 6 is driven to rotate, thereby driving the cargo to be lifted. The winch 5 is driven to move on the boom 6 by the traction pulley 601, and the wire rope 501 is driven to be wound or unwound by the winch 5, thereby driving the lifting and lowering of the cargo. When lifting the cargo, the main hook 7 is used for lifting, and the auxiliary hook 17 is used for auxiliary lifting on both sides of the cargo. During the lifting and moving process, the spring sleeve rod 18 and the auxiliary hook 17 cooperate to buffer the shaking of the cargo and reduce the impact on the main hook 7. At the same time, when the main hook 7 is impacted, the spherical pad between the connecting shaft 11 and the support plate 16 and the rubber pad 14 are used for buffering, thereby further reducing the impact on the main hook 7 and reducing the stress concentration at the connection point of the main hook 7, thereby ensuring the service life and safety of the main hook 7.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crane with hook stress compensation, comprising: A column (1), a boom (6), a main hook (7) and an auxiliary hook (17), characterized in that: a support frame (2) is provided on the outer wall of the upper half of the column (1), a main shaft (4) is provided between the support frames (2) and located on one side of the column (1), a boom (6) is provided on one side of the outer wall of the main shaft (4), a winch (5) is provided on one side of the bottom of the boom (6), a steel wire rope (501) is wound around the winch (5), a pulley block (9) is provided at the bottom of the steel wire rope (501), brackets (10) are provided on both sides of the outer wall of the middle part of the pulley block (9), and the brackets (10) A support plate (16) is provided between the bottoms, a connecting shaft (11) is provided in the center of the support plate (16), a main hook (7) is provided at one end of the bottom of the connecting shaft (11), a steel pad (15) is provided at the top of the support plate (16), a rubber pad (14) is provided at the top of the steel pad (15), a spherical pad (13) is provided at the top of the rubber pad (14), a pressure block (12) is provided at the top of the spherical pad (13), spring sleeve rods (18) are provided on both sides of the outer wall of the bottom of the pulley block (9), and a secondary hook (17) is provided at one end of the spring sleeve rod (18) away from the pulley block (9); The top of the connecting shaft (11) is provided with a pier head located above the pressing block (12); gaskets are provided on the upper and lower sides of the pressing block (12); the rubber pad (14) is in the shape of a central bulge, and the top of the rubber pad (14) is in contact with the inner wall of the spherical pad (13); and a through hole is provided in the center of the pressing block (12), the spherical pad (13), the rubber pad (14) and the steel pad (15).

2. A crane with hook stress compensation according to claim 1, characterized in that: A driving motor (3) is provided at the top of the support frame (2) above the main shaft (4), and one end of a power output shaft of the driving motor (3) is fixedly connected to the main shaft (4).

3. A crane with hook stress compensation according to claim 1, characterized in that: A remote controller (8) is provided on one side of the outer wall at the bottom of the winch (5).

4. A crane with hook stress compensation according to claim 1, characterized in that: The end of the spring sleeve rod (18) is rotatably connected to the pulley block (9) via a hinge.

5. A crane with hook stress compensation according to claim 1, characterized in that: A reinforcing rib is provided at the bottom of the main hook (7) at the hooking groove, and a spring anti-dropping buckle is provided at one side of the opening of the main hook (7).

6. A crane with hook stress compensation according to claim 1, characterized in that: A traction pulley (601) is provided on one side of the bottom of the boom (6), a traction rope (602) is provided between the traction pulleys (601), and the traction pulley (601) on one side is fixedly connected to the winch (5).

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