A rotating hook with chain adjustment function

Abstract

The invention discloses a rotary hook with a chain adjustment function, comprising a U-shaped frame with an opening facing downward, a chain adjuster fixed to the outer wall of the top end of the U-shaped frame, and a hook installed at the bottom of the U-shaped frame; a mounting block is fixed to the bottom of the U-shaped frame, the hook is rotatably connected to the bottom end of the mounting block, the top end of the mounting block is rotatably connected to a connecting seat, and the connecting seat is fixed to the hook; a limiting cap is fixed to the inner wall of the top end of the U-shaped frame, a limiting part is arranged between the limiting cap and the connecting seat, the top end of the limiting part is detachably connected to the limiting cap, and the bottom end of the limiting part is fixed to the connecting seat; an anti-slip mechanism is fixed to the hook. The invention combines the rotary hook with the chain adjuster, and the structure is more compact and the adjustment is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of chain rigging, in particular to a rotary hook with a chain adjusting function. Background Art

[0002] Chain slings are slings connected by metal chain links. There are two main types of slings: welding and assembly. There are single and multiple slings. They are made of high-quality alloy steel. Their outstanding features are wear resistance, high temperature resistance, low ductility, and no elongation after being stressed. They play a very important role in industrial production.

[0003] However, at present, when assembling chain rigging, traditional swivel hooks need to be connected to the chain with connectors such as shackles or chain shackles, and do not have the function of adjusting the length of the rigging. If you want to adjust the length, you need to add a chain adjuster. Such chain rigging has a complex and bulky structure and is inconvenient to operate. In addition, the traditional swivel hook is fixed with a nut to prevent the hook from falling off. When subjected to force, the nut squeezes the base of the ring, and the friction resistance is large and it cannot rotate.

[0004] Therefore, it is urgent to design a rotating hook with a chain adjustment function to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a swivel hook with a chain adjustment function to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a rotary hook with a chain adjustment function, comprising a U-shaped frame with an opening facing downward, a chain adjuster fixed to the outer wall of the top end of the U-shaped frame, and a hook installed at the bottom of the U-shaped frame;

[0007] The bottom of the U-shaped frame is fixedly connected to a mounting block, the hook is rotatably connected to the bottom of the mounting block, the top of the mounting block is rotatably connected to a connecting seat, and the connecting seat is fixedly connected to the hook; the inner wall of the top of the U-shaped frame is fixedly connected to a limiting cap, a limiting portion is arranged between the limiting cap and the connecting seat, the top of the limiting portion is detachably connected to the limiting cap, and the bottom of the limiting portion is fixedly connected to the connecting seat;

[0008] An anti-slip mechanism is fixedly connected to the hook.

[0009] Preferably, the limiting part includes a support block fixedly connected to the connecting seat, a support rod fixedly connected to the top of the support block, a limiting cylinder slidingly sleeved on the top of the support rod, and the limiting cylinder is detachably connected to the limiting cap; a first spring is sleeved on the outer side of the support rod, and the two ends of the first spring are respectively fixedly connected to the limiting cylinder and the support block; a first annular electromagnet is fixedly embedded at the bottom end of the limiting cylinder, and a second annular electromagnet is fixedly connected to the top of the support block.

[0010] Preferably, a plurality of limiting grooves are formed at the bottom end of the limiting cap, a plurality of limiting heads matching the limiting grooves are fixedly connected to the top end of the limiting cylinder, the limiting grooves and the limiting heads are equidistantly arranged in the circumferential direction, and the limiting grooves and the limiting heads are detachably connected.

[0011] Preferably, the bottom end of the mounting block is rotatably connected to a rotating shaft, the hook is fixedly connected to the bottom end of the rotating shaft, the top end of the rotating shaft sequentially passes through the mounting block and the connecting seat and is fixedly connected to the bottom end of the supporting block, and the rotating shaft is fixedly connected to the connecting seat.

[0012] Preferably, the connecting seat and the rotating shaft are fixedly connected by bolts.

[0013] Preferably, the chain adjuster includes an adjustment seat fixedly connected to the U-shaped frame, and a chain slot and a chain through slot are provided on the adjustment seat, the chain slot and the chain through slot are arranged in a "cross" shape, the chain slot is connected to the chain through slot, and the chain slot and the chain through slot are both arranged to be inclined upward at an angle to the horizontal plane.

[0014] Preferably, the adjustment seat is also connected with a stop pin in a limited sliding manner, one end of the stop pin passes through the adjustment seat and extends out of the adjustment seat, and an arc groove is formed on the stop pin.

[0015] Preferably, a blind hole matched with the stop pin is provided on the adjustment seat, and the stop pin is limitedly slidably connected in the blind hole; a sliding rod is fixedly connected to the end of the stop pin close to the bottom of the blind hole, and the end of the sliding rod away from the stop pin passes through the bottom of the blind hole; a second spring is sleeved on the sliding rod, and the two ends of the second spring are respectively fixed to the stop pin and the blind hole.

[0016] Preferably, a long groove is formed on the side wall of the stop pin, a limiting block is fixedly connected to the inner wall of the blind hole, and the limiting block is located in the long groove and is slidably connected with the long groove.

[0017] Preferably, the anti-slip mechanism includes a mounting seat fixedly connected to the hook, a connecting shaft is rotatably connected to the mounting seat, a baffle is fixedly connected to the connecting shaft, a torsion spring is sleeved on the connecting shaft, one end of the torsion spring is fixedly connected to the baffle, and the other end of the torsion spring is fixedly connected to the mounting seat.

[0018] The present invention discloses the following technical effects:

[0019] 1. The present invention combines the chain adjuster with the rotating hook, which reduces the number of connectors when the chain is connected to the hook, has a compact structure, and is more convenient to adjust.

[0020] 2. The present invention sets a limit part, so that the hook can be controlled to lock or rotate according to the actual needs, and the overall adjustment is more convenient, which can effectively avoid the problems of chain knotting in the early stage of lifting and unstable lifting goods in the late stage of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of a rotary hook with a chain adjustment function of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of middle;

[0024] Figure 3 It is a side view of a rotary hook with a chain adjustment function of the present invention;

[0025] Figure 4 for Figure 3 Enlarged view of middle B;

[0026] Figure 5 It is a structural schematic diagram of the chain adjuster in the present invention;

[0027] Figure 6 for Figure 5 Enlarged view of middle C;

[0028] Figure 7 It is a structural schematic diagram of the retaining pin in the present invention;

[0029] Figure 8 It is a structural schematic diagram of a chain and a chain adjuster;

[0030] Fig. 9 It is a structural schematic diagram of the limiting cylinder in the second embodiment;

[0031] Fig.10 It is a schematic diagram of the structure of the limiting cap in the second embodiment;

[0032] Among them, 1 is an adjustment seat, 2 is a chain slot, 3 is a stop pin, 4 is a chain slot, 5 is a U-shaped frame, 6 is a bolt, 7 is a connecting seat, 8 is a bearing, 9 is a rotating shaft, 10 is a baffle, 11 is a hook, 12 is a limiting cap, 13 is a limiting cylinder, 14 is a first annular electromagnet, 15 is a limiting protrusion, 16 is a first spring, 17 is a support rod, 18 is a second annular electromagnet, 19 is a support block, 20 is a connecting shaft, 21 is a torsion spring, 24 is a sliding rod, 25 is a second spring, 27 is a limiting block, 28 is a long slot, 29 is an arc slot, and 30 is a mounting block. DETAILED DESCRIPTION

[0033] 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.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Embodiment 1

[0036] like Figure 1-8 As shown, the present invention provides a rotary hook with a chain adjustment function, comprising a U-shaped frame 5 with an opening facing downward, a chain adjuster fixed to the outer wall of the top end of the U-shaped frame 5, and a hook 11 installed at the bottom of the U-shaped frame 5;

[0037] The bottom of the U-shaped frame 5 is fixedly connected with a mounting block 30, the hook 11 is rotatably connected to the bottom end of the mounting block 30, the top end of the mounting block 30 is rotatably connected with a connecting seat 7, and the connecting seat 7 is fixedly connected to the hook 11; the inner wall of the top end of the U-shaped frame 5 is fixedly connected with a limiting cap 12, a limiting portion is arranged between the limiting cap 12 and the connecting seat 7, the top end of the limiting portion is detachably connected to the limiting cap 12, and the bottom end of the limiting portion is fixedly connected to the connecting seat 7;

[0038] The hook 11 is fixedly connected with an anti-drop mechanism.

[0039] Furthermore, bearings 8 are fixedly embedded at the top and bottom ends of the mounting block 30 , and the connecting seat 7 and the rotating shaft 9 are rotatably connected to the mounting block 30 via the bearings 8 .

[0040] Furthermore, the limiting part includes a support block 19 fixed to the connecting seat 7, a support rod 17 is fixed to the top of the support block 19, a limiting cylinder 13 is slidably sleeved on the top of the support rod 17, and the limiting cylinder 13 is detachably connected to the limiting cap 12; a first spring 16 is sleeved on the outer side of the support rod 17, and the two ends of the first spring 16 are respectively fixed to the limiting cylinder 13 and the support block 19; a first annular electromagnet 14 is fixedly embedded at the bottom end of the limiting cylinder 13, and a second annular electromagnet 18 is fixed to the top of the support block 19.

[0041] Furthermore, the magnetic poles generated at the opposite ends of the first annular electromagnet 14 and the second annular electromagnet 18 when energized are opposite. Since the magnetic poles generated at the opposite ends of the first annular electromagnet 14 and the second annular electromagnet 18 when energized are opposite, when the hook 11 needs to be able to rotate, the first annular electromagnet 14 and the second annular electromagnet 18 are energized, and the limit cylinder 13 compresses the first spring 16 to move downward under the action of the magnetic force, and the limit cap 12 and the limit cylinder 13 are released from the clamping, and the hook 11 can rotate at this time; when the hook 11 does not need to rotate, the first annular electromagnet 14 and the second annular electromagnet 18 are de-energized, and the magnetic force disappears. Under the action of the elastic force, the limit cylinder 13 moves upward and re-engages with the limit cap 12, and the hook 11 cannot rotate. By controlling the power on and off of the first annular electromagnet 14 and the second annular electromagnet 18, it is possible to control whether the hook 11 can rotate according to needs, which is safer and more reliable.

[0042] Furthermore, a limiting protrusion 15 adapted to the inner wall of the limiting cylinder 13 is fixedly connected to the top end of the support rod 17 , and the limiting cylinder 13 is connected to the support rod 17 in a limiting manner via the limiting protrusion 15 .

[0043] Furthermore, a plurality of limiting grooves are provided at the bottom of the limiting cap 12, and a plurality of limiting heads adapted to the limiting grooves are fixedly connected to the top of the limiting cylinder 13. The plurality of limiting grooves and the plurality of limiting heads are equidistantly arranged in the circumferential direction, and the limiting grooves and the limiting heads are detachably connected. A plurality of first limiting grooves and a plurality of second limiting grooves are provided, and the number of the first limiting grooves and the second limiting grooves is as large as possible, so that the limiting cylinder 13 can be re-engaged with the limiting cap 12 even when it rotates at a relatively small angle relative to the limiting cap 12, thereby enabling the hook 11 to rotate at a small angle to adjust the direction.

[0044] Furthermore, the bottom end of the mounting block 30 is rotatably connected to a rotating shaft 9, the hook 11 is fixedly connected to the bottom end of the rotating shaft 9, the top end of the rotating shaft 9 passes through the mounting block 30 and the connecting seat 7 in sequence and is fixedly connected to the bottom end of the supporting block 19, and the rotating shaft 9 is fixedly connected to the connecting seat 7.

[0045] Further, the connection seat 7 and the rotating shaft 9 are fixedly connected by bolts 6. Bolt holes are provided on the connection seat 7 and the rotating shaft 9, and the bolts pass through the bolt holes to fix the connection seat 7 and the rotating shaft 9 together.

[0046] Furthermore, the chain adjuster includes an adjustment seat 1 fixedly connected to the U-shaped frame 5, and a chain slot 2 and a chain through slot 4 are provided on the adjustment seat 1. The chain slot 2 and the chain through slot 4 are arranged in a "cross" shape, the chain slot 2 and the chain through slot 4 are connected, and the chain slot 2 and the chain through slot 4 are arranged upward at an angle to the horizontal plane. By clamping the chain links at the appropriate position into the corresponding chain slot 2 and chain through slot 4, the relative position of the chain adjuster and the chain can be adjusted, thereby achieving the adjustment of the length.

[0047] Furthermore, the adjusting seat 1 is also connected with a stop pin 3 in a limited sliding manner, one end of the stop pin 3 penetrates the adjusting seat 1 and extends out of the adjusting seat 1, and an arc groove 29 is provided on the stop pin 3. The present application sets the stop pin 3, presses the stop pin 3 to compress the second spring 25, and the stop pin 3 moves to the side close to the bottom of the blind hole. At this time, the arc groove 29 is located in the chain groove 4, and the chain can move upward along the chain groove 4. Move a chain link upward along the chain groove 4, and the next chain link of this chain link will enter the chain slot 2, and the previous chain link continues to move upward. The chain slot 2 is completely engaged with the next chain link. At this time, the stop pin 3 is released, and the stop pin 3 is reset under the action of the second spring 25, and the arc groove 29 is in the chain slot 4, and the previous chain link cannot move downward. The chain moves downward and escapes from the chain adjuster, ensuring that the chain and the chain adjuster are connected safely and securely.

[0048] Furthermore, a blind hole adapted to the stop pin 3 is provided on the adjustment seat 1, and the stop pin 3 is limitedly slidably connected in the blind hole; a sliding rod 24 is fixedly connected to one end of the stop pin 3 close to the bottom of the blind hole, and the end of the sliding rod 24 away from the stop pin 3 passes through the bottom of the blind hole; a second spring 25 is sleeved on the sliding rod 24, and the two ends of the second spring 25 are respectively fixedly connected to the stop pin 3 and the blind hole.

[0049] Furthermore, a long groove 28 is formed on the side wall of the stop pin 3 , and a limit block 27 is fixedly connected to the inner wall of the blind hole. The limit block 27 is located in the long groove 28 and is slidably connected to the long groove 28 .

[0050] Furthermore, the anti-slip mechanism includes a mounting seat fixedly connected to the hook 11, a connecting shaft 20 is rotatably connected to the mounting seat, a baffle 10 is fixedly connected to the connecting shaft 20, a torsion spring 21 is sleeved on the connecting shaft 20, one end of the torsion spring 21 is fixedly connected to the baffle 10, and the other end of the torsion spring 21 is fixedly connected to the mounting seat. When the baffle 10 is set, when the goods are hoisted, the baffle 10 is pushed open to hang the goods on the hook 11. After the goods are hung, the baffle 10 returns to its original position under the action of the torsion spring 21, so as to prevent the goods from being unhooked during the hoisting process, thereby ensuring the safety and reliability of the hook 11 when hoisting goods.

[0051] Specific implementation method: Figure 8As shown, the chain is divided into several links. The installation process of the chain and the chain adjuster is as follows: press the stop pin 3 to compress the second spring 25, and the stop pin 3 moves to the side close to the bottom end of the blind hole. At this time, the arc groove 29 is located in the chain groove 4, and the chain can move upward along the chain groove 4. Move a chain link upward along the chain groove 4, and the next chain link of this chain link will enter the chain slot 2, and the previous chain link continues to move upward. The chain slot 2 is completely engaged with the next chain link. At this time, release the stop pin 3, and the stop pin 3 is reset under the action of the second spring 25, and the arc groove 29 is in the chain slot 4. The previous chain link cannot move downward, and the chain moves down and escapes from the chain adjuster, ensuring that the connection between the chain and the chain adjuster is safe and reliable.

[0052] After the chain is connected to the chain adjuster, the lifting is carried out through the hook 11. During the lifting process, the hook 11 needs to be able to rotate due to the instability of the cargo at the initial stage of lifting to avoid the problem of chain knotting caused by the inability of the hook 11 to rotate. At this time, the first annular electromagnet 14 and the second annular electromagnet 18 are energized, and the limit cylinder 13 compresses the first spring 16 to move downward under the action of the magnetic force, and the limit cap 12 is released from the limit cylinder 13, and the hook 11 can rotate at this time; when the cargo is stable, in order to avoid the problem of unstable cargo lifting caused by the hook 11 rotating at will, the hook 11 needs to be unable to rotate. At this time, the first annular electromagnet 14 and the second annular electromagnet 18 are de-energized, and the magnetic force disappears. Under the action of the elastic force, the limit cylinder 13 moves upward and re-engages with the limit cap 12, and the hook 11 cannot rotate.

[0053] Embodiment 2

[0054] like Figure 9-10 As shown, the difference between the second embodiment and the first embodiment is that the cross-sectional shape of the limiting groove opened at the bottom end of the limiting cap 12 and the cross-sectional shape of the limiting head fixed to the top end of the limiting cylinder 13 in the second embodiment are both triangular. The cross-sectional shapes of the limiting groove and the limiting head are both triangular, and when the limiting cylinder 13 and the limiting cap 12 are engaged, the limiting head can be more smoothly inserted into the limiting groove to achieve engagement, thereby avoiding the problem that the limiting cylinder 13 and the limiting cap 12 cannot be engaged due to the limiting head being unable to smoothly enter the limiting groove.

[0055] Specific implementation method: The specific implementation method of the second embodiment is the same as that of the first embodiment, and will not be described in detail here.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A rotating hook with chain adjustment function, characterized in that: It comprises a U-shaped frame (5) with an opening facing downward, a chain adjuster fixed to the outer wall of the top end of the U-shaped frame (5), and a hook (11) installed at the bottom of the U-shaped frame (5); The bottom of the U-shaped frame (5) is fixedly connected to a mounting block (30), the hook (11) is rotatably connected to the bottom of the mounting block (30), the top of the mounting block (30) is rotatably connected to a connecting seat (7), and the connecting seat (7) is fixedly connected to the hook (11); a limiting cap (12) is fixedly connected to the inner wall of the top of the U-shaped frame (5), a limiting portion is arranged between the limiting cap (12) and the connecting seat (7), the top of the limiting portion is detachably connected to the limiting cap (12), and the bottom of the limiting portion is fixedly connected to the connecting seat (7); The hook (11) is fixedly connected with an anti-slip mechanism; The limiting portion comprises a support block (19) fixedly connected to the connecting seat (7); a support rod (17) is fixedly connected to the top of the support block (19); a limiting cylinder (13) is slidably sleeved on the top of the support rod (17); the limiting cylinder (13) is detachably connected to the limiting cap (12); a first spring (16) is sleeved on the outer side of the support rod (17); two ends of the first spring (16) are respectively fixedly connected to the limiting cylinder (13) and the support block (19); a first annular electromagnet (14) is fixedly embedded at the bottom end of the limiting cylinder (13); and a second annular electromagnet (18) is fixedly connected to the top of the support block (19); The limiting cap (12) has a plurality of limiting grooves at the bottom end, and the limiting cylinder (13) has a plurality of limiting heads fixedly connected to the top end thereof, the plurality of limiting grooves and the plurality of limiting heads being arranged equidistantly in the circumferential direction, and the limiting grooves and the limiting heads being detachably connected; The chain adjuster comprises an adjustment seat (1) fixedly connected to the U-shaped frame (5), the adjustment seat (1) being provided with a chain clamping slot (2) and a chain through slot (4), the chain clamping slot (2) and the chain through slot (4) being arranged in a "cross" shape, the chain clamping slot (2) being connected to the chain through slot (4), and the chain clamping slot (2) and the chain through slot (4) being arranged upwardly at an angle to a horizontal plane; The adjusting seat (1) is also connected to a stop pin (3) in a limited sliding manner, one end of the stop pin (3) passes through the adjusting seat (1) and extends out of the adjusting seat (1), and an arc-shaped groove (29) is formed on the stop pin (3); The adjustment seat (1) is provided with a blind hole matched with the stop pin (3), and the stop pin (3) is limitedly slidably connected in the blind hole; the end of the stop pin (3) close to the bottom of the blind hole is fixedly connected to a slide rod (24), and the end of the slide rod (24) away from the stop pin (3) passes through the bottom of the blind hole; the slide rod (24) is sleeved with a second spring (25), and the two ends of the second spring (25) are respectively fixedly connected to the stop pin (3) and the blind hole.

2. The swivel hook with chain adjustment function according to claim 1, characterized in that: The bottom end of the mounting block (30) is rotatably connected to a rotating shaft (9), the hook (11) is fixedly connected to the bottom end of the rotating shaft (9), the top end of the rotating shaft (9) sequentially passes through the mounting block (30) and the connecting seat (7) and is fixedly connected to the bottom end of the supporting block (19), and the rotating shaft (9) is fixedly connected to the connecting seat (7).

3. The rotary hook with chain adjustment function according to claim 2, characterized in that: The connecting seat (7) and the rotating shaft (9) are fixedly connected by bolts (6).

4. The swivel hook with chain adjustment function according to claim 1, characterized in that: A long slot (28) is formed on the side wall of the stop pin (3); a limit block (27) is fixedly connected to the inner wall of the blind hole; the limit block (27) is located in the long slot (28) and is in sliding connection with the long slot (28).

5. The swivel hook with chain adjustment function according to claim 1, characterized in that: The anti-drop mechanism comprises a mounting seat fixedly connected to the hook (11), a connecting shaft (20) being rotatably connected to the mounting seat, a baffle (10) being fixedly connected to the connecting shaft (20), a torsion spring (21) being sleeved on the connecting shaft (20), one end of the torsion spring (21) being fixedly connected to the baffle (10), and the other end of the torsion spring (21) being fixedly connected to the mounting seat.

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