Hook head of crane

Abstract

The utility model belongs to the technical field of crane hook heads, and particularly relates to a crane hook head which comprises an inner hook head, an outer hook cover is arranged on the outer side of the inner hook head, the inner hook head is connected to the inner wall of the outer hook cover in a sliding mode, receding holes are formed in the two sides of the outer hook cover, a side opening is formed in one side of the inner hook head, and the side opening is communicated with the receding holes. Two fixed hanging rings are welded to the top end of the outer hook cover, a U-shaped clamping piece is arranged at the top end of the outer hook cover, and a transverse rod is installed on the inner wall of the U-shaped clamping piece; through cooperative use of the inner hook head and the outer hook cover, automatic locking is achieved during hoisting, automatic unlocking is achieved when hoisting is finished, use is convenient and flexible, and the problems that a traditional hook head stop lever is prone to being seriously disturbed by cargo hanging pieces and difficult to smoothly rotate according to a preset rotating path, unlocking operation is very strenuous and tedious, and the use cost is low are solved. In the prior art, a large amount of time and effort are needed, the unlocking action is difficult to complete when the position of a hanging piece is adjusted and a stop lever is tried to be pried, and the overall working efficiency of the hoisting operation is seriously influenced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of crane hook head, concretely relates to a crane hook head. BACKGROUND

[0002] The crane hook head is a key component in the lifting mechanism of the crane, and is a device for suspending and lifting heavy objects. It is usually installed at the end of the wire rope of the crane, and its shape is generally like a curved hook, which has an open end and a closed end. Some hook heads are provided with a rotating stop rod structure driven by a torsional spring at the open end to achieve effective self-locking after the hook head is hung on the cargo, so as to automatically complete self-locking and ensure lifting safety.

[0003] However, in actual operation, since the specifications of the ropes or other hanging parts used for lifting the cargo are different, when a relatively thick rope or hanging part is encountered, the stop rod is often severely disturbed by the cargo hanging part when the hook head needs to be unlocked after the lifting task is completed. The thick hanging part tightly abuts against the stop rod, making it difficult to smoothly rotate along the predetermined rotating path, and thus causing the unlocking operation to become extremely laborious and tedious. The operator often needs to spend a lot of time and effort to carefully adjust the position of the hanging part and try to pry the stop rod, so as to laboriously complete the unlocking action. Not only does this seriously affect the overall work efficiency of the lifting operation, but it may also cause the on-site personnel to be distracted due to anxious waiting for a long time. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a crane hook head with the characteristics of convenient installation and dismounting and improved use efficiency.

[0005] The utility model provides the following technical scheme: including inner hook head, the outer hook cover is set up in the inner hook head outside, the inner hook head is connected in the inner wall of the outer hook cover slidingly, both sides of the outer hook cover are all set up and give a place hole, the side opening is set up in the one side of the inner hook head, two give a place holes and the side opening all with the inner hook head position correspondence, the top of the outer hook cover is welded with two fixed rings, the top of the outer hook cover is provided with U type fastener, U type fastener is rotatably connected in two fixed ring outside, the inner wall of U type fastener is installed with crosspiece, the crosspiece is rotatably connected in two fixed ring inner wall.

[0006] Among them, the top of the inner hook head is welded with the connecting mechanism, the top of the outer hook cover is set up and has the top, the connecting mechanism is connected in the top inner wall slidingly, the connecting mechanism slidingly connected with two fixed rings, the sliding hole is set up on the connecting mechanism, the crosspiece is connected in the sliding hole inner wall slidingly.

[0007] Among them, the inner wall of the outer hook cover is connected with the arc-shaped push plate slidingly, the arc-shaped push plate bottom is installed with two compression springs, the arc-shaped push plate and the inner hook head bottom contact.

[0008] Two limiting arc-shaped plates are fixedly connected to the inner wall of the outer hook cover, and the arc-shaped push plate is not in contact with the two limiting arc-shaped plates.

[0009] The outer hook cover is internally provided with a giving recess, and the two compression springs are respectively installed in the inner wall of the corresponding giving recess.

[0010] The inner hook head is welded with a limiting insertion rod at the bottom end, the arc-shaped push plate is provided with a butt joint perforation, the limiting insertion rod is inserted into the inner wall of the butt joint perforation, and the limiting insertion rod is not in contact with the outer hook cover.

[0011] The utility model discloses the beneficial effect is: through the cooperation of inner hook head and outer hook cover, realizes automatic locking when hoisting, and automatically unlocks when hoisting ends, and the use is convenient and flexible, solves the traditional hook head stop lever and is easy to be seriously disturbed by the goods pendant, and it is difficult to rotate along the predetermined rotation path smoothly, and then causes the unlocking operation to become extremely laborious and tedious, needs to spend a lot of time and energy, adjusts the pendant position, tries to pry the stop lever, and the unlocking action is difficultly completed, seriously influences the overall working efficiency of hoisting operation, and the operation time can be too long, and the problems such as the attention dispersion of the operation site personnel due to anxious waiting can be caused.

[0012] The part not involved in the device is same as the prior art or can be realized by using the prior art. DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is the three-dimensional sectional structure schematic diagram of the utility model;

[0015] Figure 3 It is Figure 2 The enlarged intention of A part in the middle;

[0016] Figure 4 It is the three-dimensional sectional exploded structure schematic diagram of the utility model.

[0017] In the drawing: 1, inner hook head;11, connecting mechanism;111, sliding hole;12, limiting insertion rod;2, outer hook cover;21, giving hole;22, side opening;23, fixed hanging ring;24, top opening;25, limiting arc-shaped plate;26, giving recess;3, U-shaped clamping piece;31, horizontal rod;4, arc-shaped push plate;41, compression spring;42, butt joint perforation. Specific implementation

[0018] Please refer to Figures 1-4The utility model provides the following technical scheme: including inner hook head 1, the outer hook cover 2 of inner hook head 1 outside is provided with, inner hook head 1 is slidably connected in the inner wall of outer hook cover 2, the both sides of outer hook cover 2 are all seted up to let the hole 21, the side opening 22 of inner hook head 1 is seted up, two let the hole 21 and side opening 22 all with the position of inner hook head 1 corresponding, the top of outer hook cover 2 is welded with two fixed rings 23, the top of outer hook cover 2 is provided with U type clamp 3, U type clamp 3 is rotatably connected in the both sides of two fixed rings 23, the inner wall of U type clamp 3 is installed with crosspiece 31, crosspiece 31 is rotatably connected in the inner wall of two fixed rings 23.

[0019] In the embodiment: the whole inner hook head 1 is in the space inside the outer hook cover 2, the let hole 21 of the both sides of outer hook cover 2 is same with the inner mouth width size of inner hook head 1, so that inner hook head 1 can complete the let and hang work of cargo rope together with outer hook cover 2, the side opening 22 corresponds with the notch position and size of inner hook head 1, when inner hook head 1 rises inside outer hook cover 2, inner hook head 1 is limited by the inner wall of the top of outer hook cover 2 and cannot continue to slide up, the notch of inner hook head 1 completely corresponds with the position of side opening 22, so that the position of two openings coincides, it is convenient to install and dismount rope, outer hook cover 2 is connected with U type clamp 3 and crosspiece 31 through two fixed rings 23, when installing, first, crosspiece 31 is passed through two fixed rings 23, then, U type clamp 3 is aligned with the both ends of crosspiece 31, and installation is completed by bolt and other ways, the body is connected and fixed with the traction steel wire on the crane through U type clamp 3, so that the crane can complete the hoisting work of cargo by the body, when using, first, the rope on cargo is hung through the side opening 22 inside inner hook head 1, the crane winds the traction steel wire, U type clamp 3 lifts outer hook cover 2 through crosspiece 31 and two fixed rings 23, so that outer hook cover 2 slides up under the action of traction force, and inner hook head 1 cannot move up under the influence of the gravity of cargo rope, so that inner hook head 1 is in the tendency of sliding down between outer hook cover 2, the rope of cargo is together with inner hook head 1 and goes into the inside of outer hook cover 2, at this time, the notch position of one side of inner hook head 1 relatively drops, the notch of inner hook head 1 is sheltered and limited by outer hook cover 2, so that inner hook head 1 is always in the closed state when hoisting, completes automatic locking, after hoisting is completed, cargo is placed in the position after shifting, the hanger on cargo is loose, inner hook head 1 does not slide up under the influence of cargo and hanger, so that the notch of inner hook head 1 is again aligned with side opening 22, completes automatic unlocking, it is convenient and flexible to use, solves the problem that the traditional hook head stop lever is often seriously disturbed by cargo hanger, is difficult to rotate along the predetermined rotation path smoothly, and further causes the unlocking operation to become extremely laborious and tedious, needs to spend a lot of time and energy, adjusts the position of hanger, tries to pry the stop lever, and completes the unlocking action with difficulty, seriously affects the overall work efficiency of hoisting operation, and the problem that the attention of the staff at the operation site is distracted due to long operation time and so on can be caused.

[0020] The inner hook head 1 is welded with a connecting mechanism 11 at the top end, the outer hook cover 2 is provided with a top opening 24 at the top end, the connecting mechanism 11 is slidably connected to the inner wall of the top opening 24, the connecting mechanism 11 is slidably connected between the two fixed hanging rings 23, the connecting mechanism 11 is provided with a sliding hole 111, and the cross rod 31 is slidably connected to the inner wall of the sliding hole 111; the connecting mechanism 11 passes through the top of the outer hook cover 2 through the top opening 24, so that the connecting mechanism 11 can be exposed, and the cross rod 31 passes through the two fixed hanging rings 23 at the same time and also passes through the sliding hole 111; when the notch of the inner hook head 1 is aligned with the side opening 22, the connecting mechanism 11 is higher than the height of the two fixed hanging rings 23, and the size of the sliding hole 111 can allow the connecting mechanism 11 to slide up and down; during hoisting and pulling, the inner hook head 1 slides down, and the U-shaped clamping piece 3 and the cross rod 31 first pull the outer hook cover 2 through the fixed hanging ring 23, and then the connecting mechanism 11 is lowered to the same level as the fixed hanging ring 23 after the inner hook head 1 is lowered to the lowest point inside the outer hook cover 2, so that the U-shaped clamping piece 3 and the cross rod 31 can simultaneously pull the connecting mechanism 11, and the inner hook head 1 and the outer hook cover 2 are stressed together, thereby improving the stability and safety of use.

[0021] The inner wall of the outer hook cover 2 is slidably connected with an arc-shaped push plate 4, the bottom end of the arc-shaped push plate 4 is provided with two compression springs 41, and the arc-shaped push plate 4 is in contact with the bottom end of the inner hook head 1; the arc-shaped push plate 4 always has the ability to push upward through the elastic restoring force of the two compression springs 41 below, and the arc-shaped push plate 4 lifts the bottom of the inner hook head 1; when the goods and the hanging piece pull the inner hook head 1 downward, the inner hook head 1 pushes the arc-shaped push plate 4 downward, so that the two compression springs 41 are compressed under stress; when the hoisting is completed, the goods and the hanging piece no longer press the inner hook head 1 downward, at this time the compression spring 41 and the arc-shaped push plate 4 can push the inner hook head 1 upward, so that the notch of the inner hook head 1 can be automatically aligned with the side opening 22 to complete automatic unlocking.

[0022] The inner wall of the outer hook cover 2 is fixedly connected with two limiting arc-shaped plates 25, the arc-shaped push plate 4 is not in contact with the two limiting arc-shaped plates 25, and the inner hook head 1 is in contact with one side of the two limiting arc-shaped plates 25; the two limiting arc-shaped plates 25 are symmetrically distributed inside the outer hook cover 2, the arc surface of the limiting arc-shaped plate 25 is consistent with the arc surface on the outer side of the inner hook head 1, so that the inner hook head 1 can be attached to the two limiting arc-shaped plates 25 after being lowered, and the outer hook cover 2 limits the inner hook head 1 through the two limiting arc-shaped plates 25, so that the inner hook head 1 can be lowered to the lowest point inside the outer hook cover 2, thereby avoiding the situation that the inner hook head 1 continues to be lowered to excessively compress and damage the two compression springs 41, and ensuring a good use environment.

[0023] The outer hook cover 2 is provided with a concave groove 26, and two compression springs 41 are respectively arranged in the inner wall of the concave groove 26; the two concave grooves 26 provide accommodation space for the two compression springs 41, so that when the inner hook head 1 presses the arc-shaped push plate 4, the two compression springs 41 can be folded and shortened and accommodated in the concave groove 26, further realizing protection of the compression springs 41, avoiding the situation that the inner hook head 1 continues to drop and excessively presses the two compression springs 41, and ensuring a good use environment.

[0024] The inner hook head 1 is welded with a limiting rod 12 at the bottom end, the arc-shaped push plate 4 is provided with a butt hole 42, the limiting rod 12 is inserted into the inner wall of the butt hole 42, and the limiting rod 12 does not contact the outer hook cover 2; the inner hook head 1 supports the limiting rod 12, the arc-shaped push plate 4 can always be attached to the bottom of the inner hook head 1 under the action of the two compression springs 41, the inner hook head 1 is inserted into the butt hole 42 through the limiting rod 12, the arc-shaped push plate 4 is limited, the width of the arc-shaped push plate 4 is consistent with the inner wall of the outer hook cover 2, so that the arc-shaped push plate 4 cannot be transversely moved or rotated, and the stability of the arc-shaped push plate 4 in pushing the inner hook head 1 is ensured.

[0025] The working principle and use process of the utility model are as follows: when hoisting the goods, first, the hanging part or the rope of the goods is hung on the inner hook head 1, the hanging part is overlapped through the gap and the side opening 22 of the inner hook head 1 to realize hanging, installation is completed, the crane winds the traction wire, the U-shaped clamping part 3 lifts the outer hook cover 2 through the horizontal rod 31 and the two fixed hanging rings 23, so that the outer hook cover 2 slides upward under the action of the traction force, the inner hook head 1 cannot move upward under the influence of the gravity of the goods rope, so that the inner hook head 1 and the outer hook cover 2 are in a downward sliding trend, the rope of the goods is inserted into the inner hook cover 2 together with the inner hook head 1, at this time, the gap position on one side of the inner hook head 1 is relatively lowered, the gap of the inner hook head 1 is blocked and limited by the outer hook cover 2, so that the inner hook head 1 is always in a closed state during hoisting, automatic locking is completed, meanwhile, after the inner hook head 1 drops to the lowest point in the outer hook cover 2, the connecting mechanism 11 drops to the position level with the fixed hanging ring 23, so that the U-shaped clamping part 3 and the horizontal rod 31 can simultaneously complete traction on the connecting mechanism 11, the inner hook head 1 and the outer hook cover 2 are stressed together, the stability and safety of use are improved, after hoisting is completed, the goods are placed in the transferred position, the hanging part on the goods is loosened, the inner hook head 1 is no longer affected by the goods and the hanging part, and slides upward under the pushing of the compression spring 41 and the arc-shaped push plate 4, so that the gap of the inner hook head 1 is repositioned with the side opening 22, automatic unlocking is completed, and use is convenient and flexible.

Claims

1. A crane hook comprising an inner hook (1), characterized in that: The inner hook head (1) is provided with an outer hook cover (2) outside, the inner hook head (1) is slidably connected to the inner wall of the outer hook cover (2), both sides of the outer hook cover (2) are provided with a let hole (21), one side of the inner hook head (1) is provided with a side opening (22), the two let holes (21) and the side opening (22) are in position correspondence with the inner hook head (1), the top of the outer hook cover (2) is welded with two fixed hanging rings (23), the top of the outer hook cover (2) is provided with a U-shaped clamp (3), the U-shaped clamp (3) is rotatably connected to the outer side of the two fixed hanging rings (23), the inner wall of the U-shaped clamp (3) is provided with a crossbar (31), and the crossbar (31) is rotatably connected to the inner wall of the two fixed hanging rings (23).

2. A hook head for a crane according to claim 1, characterised in that: The inner hook head (1) is provided with a connecting mechanism (11) welded at the top, the top of the outer hook cover (2) is provided with a top opening (24), the connecting mechanism (11) is slidably connected to the inner wall of the top opening (24), and the connecting mechanism (11) is slidably connected between the two fixed hanging rings (23). A sliding hole (111) is formed in the connecting mechanism (11), and the crossbar (31) is slidably connected to the inner wall of the sliding hole (111).

3. A hook head for a crane according to claim 1, characterized in that: The inner wall of the outer hook cover (2) is slidably connected with an arc-shaped push plate (4), the bottom end of the arc-shaped push plate (4) is provided with two compression springs (41), and the arc-shaped push plate (4) is in contact with the bottom end of the inner hook head (1).

4. A hook head for a crane according to claim 3, characterised in that: The inner wall of the outer hook cover (2) is fixedly connected with two limiting arc-shaped plates (25), the arc-shaped push plate (4) is not in contact with the two limiting arc-shaped plates (25), and the inner hook head (1) is in contact with one side of the two limiting arc-shaped plates (25).

5. A hook head for a crane according to claim 3, characterised in that: The inner wall of the outer hook cover (2) is slidably connected with an arc-shaped push plate (4), the bottom end of the arc-shaped push plate (4) is provided with two compression springs (41), and the arc-shaped push plate (4) is in contact with the bottom end of the inner hook head (1).

6. A hook head for a crane according to claim 3, characterised in that: The inner wall of the outer hook cover (2) is slidably connected with an arc-shaped push plate (4), the bottom end of the arc-shaped push plate (4) is provided with two compression springs (41), and the arc-shaped push plate (4) is in contact with the bottom end of the inner hook head (1). The bottom end of the inner hook head (1) is welded with a limiting plug rod (12), the arc-shaped push plate (4) is provided with a butt joint perforation (42), the limiting plug rod (12) is inserted into the inner wall of the butt joint perforation (42), and the limiting plug rod (12) is not in contact with the outer hook cover (2).

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