Rotary safety hook assembly directly connected with chain

Abstract

The utility model discloses a rotary safety hook assembly directly connected with a chain, which comprises two shells, a cover shaft component is abutted in the two shells, a shaft pin component is fixedly connected to the side surface of the cover shaft component, a part of the shaft pin component extends out of the two shells, the cover shaft component is detachably connected with a mouth-shaped chain, the mouth-shaped chain is connected with a long chain, one end of the long chain extends out of the shells, and the other end of the long chain extends out of the shells. A main shaft is detachably connected into the cover shaft assembly, slidably connected with the shaft pin assembly and in contact connection with the square chain, a hook shaft is rotationally connected into the main shaft through a plurality of balls and makes clearance contact with the shell, and a safety hook is fixedly connected to the bottom end of the hook shaft. The cover shaft assembly extends out of the shell, the pin shaft assembly is convenient to operate, the connection between the cover shaft assembly and the main shaft can be removed by operating the pin shaft assembly, therefore, the limitation of the mouth-shaped chain is removed, the chain can be rapidly and conveniently replaced, and the loss between parts is reduced through the flexible rotating connection between the main shaft and the hook shaft.

Description

Technical Field

[0001] The utility model relates to the field of lifting safety hooks, in particular to a rotating safety hook assembly directly connected to a chain. Background Art

[0002] The lifting safety hook is one of the commonly used hooks in lifting scenarios. The rotatable safety hook directly connected to the chain is used frequently when lifting heavy objects because the hook can rotate in scenarios where the goods need to be rotated after lifting. Similarly, the rotation of the hook also prevents the chain hanging the hook from getting tangled due to rotation.

[0003] Conventional rotating safety hooks are hard-connected, and the shaft at the top of the hook is directly connected to the hook body. The rotation is not smooth and the wear is large. Such rotating safety hook connections are prone to safety problems due to excessive wear. Similarly, the rotating safety hook and the chain are hard-connected and cannot be disassembled. Even if the rotating safety hook and the chain are detachable, the steps are quite cumbersome.

[0004] Therefore, there is an urgent need for a rotating safety hook assembly directly connected to the chain to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a rotating safety hook assembly directly connected to a chain to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solution: the utility model provides a rotating safety hook assembly directly connected to a chain, comprising two outer shells, a cover shaft assembly abutting against the two outer shells, an axle pin assembly fixedly connected to the side of the cover shaft assembly, a portion of the cover shaft assembly extending out of the two outer shells, the cover shaft assembly detachably connected to a mouth-shaped chain, the mouth-shaped chain is connected to a long chain, one end of the long chain extends out of the outer shell, a main shaft detachably connected to the cover shaft assembly, the main shaft is slidably connected to the axle pin assembly, the main shaft is contacted with the mouth-shaped chain, a hook shaft is rotatably connected to the main shaft through a plurality of balls, the hook shaft is in gap contact with the outer shell, and a safety hook is fixedly connected to the bottom end of the hook shaft.

[0007] Preferably, the cover shaft assembly includes an outer shaft cover, the side surface of the outer shaft cover is fixedly connected to the shaft pin assembly, an inner shaft cover is nested and fixed inside the outer shaft cover, a ring plate is slidably connected between the outer shaft cover and the inner shaft cover, a number of small springs are abutted between the ring plate and the inner side surface of the outer shaft cover, two baffles are symmetrically fixed on the ring plate, and the baffles are slidably connected to the outer shaft cover.

[0008] Preferably, the outer shaft cover and the inner shaft cover are each provided with two shaft cover holes, the two shaft cover holes are slidably connected to the shaft pin assembly, and the outer shaft cover and the inner shaft cover are also respectively provided with two U-grooves, and the mouth-shaped chain is in contact with the two U-grooves.

[0009] Preferably, the axle pin assembly includes a support block, which is symmetrically fixed to the side surface of the outer shaft cover, a chamber is provided in the support block, a spring is contained in the chamber, a long rod passes through the top of the support block, the spring is sleeved on the long rod, one end of the long rod extends out of the outer shell, the long rod is slidably connected to the outer shell, a rod head is fixedly connected to the end of the long rod extending out of the outer shell, a clamp is fixedly connected to the other end of the long rod, the spring abuts against the clamp, a pin is fixedly connected to the side of the clamp away from the spring, the pin is slidably connected to the shaft cover hole, and the pin is slidably connected to the main shaft.

[0010] Preferably, two shaft cover holes are symmetrically provided on the main shaft, and the two shaft cover holes are slidably connected to the pin. Two chain grooves are provided on the main shaft, and the chain grooves are in contact with the mouth-shaped chain. A bead mouth is also provided on the main shaft, and a bolt is rotatably connected in the bead mouth. An inner groove is provided in the main shaft, and the inner groove is connected to the bead mouth. A plurality of balls are rotatably connected to the inner groove, and the balls are rotatably connected to the hook shaft. The diameter of the bead mouth is larger than the diameter of the balls.

[0011] Preferably, the hook shaft is provided with an outer groove, and the outer groove is rotatably connected to the ball.

[0012] The utility model discloses the following technical effects: the cover shaft assembly extends out of the shell, which is convenient for operating the shaft pin assembly. The connection between the cover shaft assembly and the main shaft can be released by operating the shaft pin assembly, thereby releasing the restriction of the mouth chain and realizing fast and convenient chain replacement. The flexible rotation connection between the main shaft and the hook shaft reduces the loss between the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model with the outer shell removed as a whole;

[0016] Figure 3It is a schematic structural diagram of the cross-section of the pin shaft component and the cover shaft component of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the pin shaft component and the cover shaft component of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the overall explosion 1 of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the overall explosion 2 of the utility model;

[0020] Among them, 1. safety hook; 2. outer shell; 3. long chain; 4. quick release screw; 5. hook shaft; 6. outer groove; 7. main shaft; 8. bead mouth; 9. inner groove; 10. ball; 12. outer shaft cover; 13. U groove; 14. inner shaft cover; 15. shaft cover hole; 16. support block; 17. long rod; 18. rod head; 19. spring; 20. clamp; 21. pin; 22. mouth chain; 23. ring plate; 24. baffle; 25. small spring; 26. chain groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] 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 in conjunction with the accompanying drawings and specific implementation methods.

[0023] Reference Figure 1-Figure 6 The utility model provides a rotating safety hook assembly directly connected to a chain, comprising two shells 2, a cover shaft assembly abutting against the two shells 2, a shaft pin assembly fixedly connected to the side of the cover shaft assembly, a part of the shaft pin assembly extending out of the two shells 2, a mouth-shaped chain 22 detachably connected to the cover shaft assembly, the mouth-shaped chain 22 is connected to a long chain 3, one end of the long chain 3 extends out of the shell 2, a main shaft 7 detachably connected to the cover shaft assembly, the main shaft 7 is slidably connected to the shaft pin assembly, the main shaft 7 is contacted and connected to the mouth-shaped chain 22, a hook shaft 5 is rotatably connected to the main shaft 7, the hook shaft 5 is in gap contact with the shell 2, and a safety hook 1 is fixedly connected to the bottom end of the hook shaft 5.

[0024] Furthermore, the cover shaft assembly extends out of the housing 2, which is convenient for operating the axle pin assembly. The two housings 2 are connected together by a quick-release screw 4. The connection between the cover shaft assembly and the main shaft 7 can be released by operating the axle pin assembly, thereby releasing the restriction of the mouth chain 22 and realizing quick and convenient chain replacement. The flexible rotation connection between the main shaft 7 and the hook shaft 5 reduces the wear and tear between parts and extends the service life.

[0025] A further optimized solution is that the cover shaft assembly includes an outer shaft cover 12, the side of the outer shaft cover 12 is fixedly connected to the shaft pin assembly, the inner shaft cover 14 is nested and fixed inside the outer shaft cover 12, a ring plate 23 is slidably connected between the outer shaft cover 12 and the inner shaft cover 14, a number of small springs 25 are abutted between the ring plate 23 and the inner side surface of the outer shaft cover 12, two baffles 24 are symmetrically fixedly connected to the ring plate 23, and the baffles 24 are slidably connected to the outer shaft cover 12.

[0026] Furthermore, there is just enough space between the outer shaft cover 12 and the inner shaft cover 14 for the main shaft 7 to extend. When the main shaft 7 extends to a certain depth, the top surface of the main shaft 7 contacts the ring plate 23. As the main shaft 7 gradually goes deeper, the main shaft 7 pushes the ring plate 23, and the baffle plate 24 slides in the groove opened on the inner wall of the outer shaft cover 12. The baffle plate 24 is flush with the inner wall of the outer shaft cover 12, and the ring plate 23 drives the fixed baffle plate 24 to move inward. The ring plate 23 compresses ten small springs 25. Through the sliding connection between the main shaft 7 and the inner shaft cover 14 and the outer shaft cover 12, the shaft pin assembly can firmly fix the outer shaft cover 12, the main shaft 7 and the inner shaft cover 14 together. At the same time, the shaft pin assembly can also release the fixing restrictions on the outer shaft cover 12, the main shaft 7 and the inner shaft cover 14, so that the outer shaft cover 12 and the inner shaft cover 14 are separated from the main shaft 7 at the same time.

[0027] According to a further optimization scheme, two shaft cover holes 15 are provided on the outer shaft cover 12 and the inner shaft cover 14 , and the two shaft cover holes 15 are slidably connected with the shaft pin assembly. Two U-grooves 13 are also provided on the outer shaft cover 12 and the inner shaft cover 14 , respectively, and the mouth chain 22 is in contact with the two U-grooves 13 .

[0028] Furthermore, two shaft cover holes 15 are symmetrically provided on the outer shaft cover 12 and the inner shaft cover 14, and the shaft cover holes 15 of each outer shaft cover 12 and the inner shaft cover 14 are connected in a straight line to facilitate the insertion and withdrawal of the shaft pin assembly. The U-groove 13 provided on the outer shaft cover 12 and the inner shaft cover 14 can limit the movement of the mouth-shaped chain 22.

[0029] A further optimized solution is provided, wherein the axle pin assembly comprises a support block 16, wherein the support block 16 is symmetrically fixed to the side surface of the outer shaft cover 12, wherein a chamber is provided in the support block 16, wherein a spring 19 is provided in the chamber, wherein a long rod 17 passes through the top of the support block 16, wherein the spring 19 is sleeved on the long rod 17, wherein one end of the long rod 17 extends out of the outer shell 2, wherein the long rod 17 is slidably connected to the outer shell 2, wherein a rod head 18 is fixedly connected to the end of the long rod 17 extending out of the outer shell 2, wherein a clamping head 20 is fixedly connected to the other end of the long rod 17, wherein the spring 19 abuts against the clamping head 20, wherein a pin 21 is fixedly connected to the side of the clamping head 20 away from the spring 19, wherein the pin 21 is slidably connected to the shaft cover hole 15, and wherein the pin 21 is slidably connected to the main shaft 7.

[0030] Further, the shaft pin assembly is symmetrically fixed to the outer shaft cover 12, one end of the spring 19 in the support block 16 abuts against one end of the chamber, and the other end abuts against the clamp 20, the pin 21 fixed to the clamp 20 can extend into the shaft cover hole 15, and the pin 21 can pass through the shaft cover hole 15 on the outer shaft cover 12, the main shaft 7 and the shaft cover hole 15 on the inner shaft cover 14, so that the outer shaft cover 12, the main shaft 7 and the inner shaft cover 14 are fixedly connected together. When the outer shaft cover 12 and the main shaft are fixed, the inner shaft cover 14 is fixedly connected to the outer shaft cover 12. 7 and the inner shaft cover 14, the chuck 20 squeezes the spring 19 in the chamber, the pin 21 extends into the shaft cover hole 15 of the outer shaft cover 12, and the baffle 24 blocks a part of the shaft cover hole 15 on the outer shaft cover 12 from the inside, so that the pin 21 cannot enter the outer shaft cover 12. As the spindle 7 extends, the spindle 7 pushes the ring plate 23, and the ring plate 23 drives the baffle 24 to move inside the outer shaft cover 12. When the spindle 7 moves to a certain position between the outer shaft cover 12 and the inner shaft cover 14, the baffle 24 is completely The shielding of the outer shaft cover 12 is completely removed. At this time, the spring 19 pushes the pin 21 fixed under the clamp head 20, so that the pin 21 passes through the main shaft 7 from the shaft cover hole 15 of the outer shaft cover 12 and then into the shaft cover hole 15 of the inner shaft cover 14. At this time, the clamp head 20 abuts against the outer side surface of the outer shaft cover 12, and the end of the pin 21 is flush with the inner wall of the inner shaft cover 14, completing the fixation. When it is necessary to release the fixation, the rod head 18 is pulled outward, the rod head 18 drives the long rod 17, and the long rod 17 drives the clamp head The clamping head 20 compresses the spring 19 and drives the pin 21 to withdraw from the shaft cover hole 15. When the end of the pin 21 retreats into the shaft cover hole 15 of the outer shaft cover 12, the spring 19 on the back of the ring plate 23 drives the ring plate 23. The ring plate 23 drives the two baffles 24 to cover the shaft cover hole 15 of the outer shaft cover 12 while pushing the main shaft 7 to retreat outward, which is convenient for the next installation. This simplifies the steps of disassembling the chain, and can realize convenient and quick disassembly and replacement of the chain.

[0031] A further optimization scheme is that two shaft cover holes 15 are symmetrically provided on the main shaft 7, and the two shaft cover holes 15 are slidably connected to the pins 21. Two chain grooves 26 are provided on the main shaft 7, and the chain grooves 26 are in contact with the mouth chain 22. A bead mouth 8 is also provided on the main shaft 7, and a bolt is rotatably connected in the bead mouth 8. An inner groove 9 is provided in the main shaft 7, and the inner groove 9 is connected to the bead mouth 8. A plurality of balls 10 are rotatably connected to the inner groove 9, and the balls 10 are rotatably connected to the hook shaft 5. The diameter of the bead mouth 8 is larger than the diameter of the balls 10.

[0032] Furthermore, the shaft cover hole 15 opened on the main shaft 7 allows the pin 21 to pass through, so as to achieve fixation with the outer shaft cover 12 and the inner shaft cover 14. When the main shaft 7 and the hook shaft 5 are installed, the hook shaft 5 is inserted into the specified position in the main shaft 7, and ten balls 10 are sent into the inner groove 9 through the bead mouth 8, so that the balls 10 are evenly placed in the inner groove 9. At this time, the balls 10 limit the axial movement of the hook shaft 5, and the hook shaft 5 can rotate circumferentially through the balls 10 to achieve rotation with the main shaft 7, so that the rotation of the hook shaft 5 is more flexible and the friction is reduced. Different numbers of balls 10 can be put into the inner groove 9 through the bead mouth 8 according to the weight of the heavy object carried by the safety hook 1. When the weight is large, more balls 10 are put to increase the load-bearing capacity, and when the weight is small, fewer balls 10 are put to increase the rotation flexibility. When the number of balls 10 added to the inner groove 9 is completed, the bead mouth 8 can be blocked with bolts to prevent the balls 10 from withdrawing.

[0033] According to a further optimized solution, an outer groove 6 is provided on the hook shaft 5 , and the outer groove 6 is rotatably connected to the ball 10 .

[0034] Furthermore, an outer groove 6 is also provided on the hook shaft 5, so that the ball 10 rolls in a channel formed between the outer groove 6 and the inner groove 9. By placing ten balls 10 in the channel, the hook shaft 5 can be limited to only circumferential movement in the main shaft 7, thereby realizing the rotation of the safety hook 1.

[0035] 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.

[0036] The embodiments described above are only descriptions of the preferred methods 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 fall within the protection scope determined by the claims of the present invention.

Claims

1. A rotating safety hook assembly directly connected to a chain, characterized in that: The invention comprises two outer shells (2), wherein a cover shaft assembly is abutted against the two outer shells (2), a shaft pin assembly is fixedly connected to the side of the cover shaft assembly, a part of the shaft pin assembly extends out of the two outer shells (2), the cover shaft assembly is detachably connected to a mouth-shaped chain (22), the mouth-shaped chain (22) is connected to a long chain (3), one end of the long chain (3) extends out of the outer shell (2), a main shaft (7) is detachably connected to the cover shaft assembly, the main shaft (7) is slidably connected to the shaft pin assembly, the main shaft (7) is contact-connected to the mouth-shaped chain (22), a hook shaft (5) is rotatably connected to the main shaft (7) via a plurality of balls (10), the hook shaft (5) is in gap contact with the outer shell (2), and a safety hook (1) is fixedly connected to the bottom end of the hook shaft (5).

2. The rotating safety hook assembly directly connected to the chain according to claim 1, characterized in that: The cover shaft assembly comprises an outer shaft cover (12), the side surface of the outer shaft cover (12) is fixedly connected to the shaft pin assembly, an inner shaft cover (14) is nested and fixedly connected inside the outer shaft cover (12), a ring plate (23) is slidably connected between the outer shaft cover (12) and the inner shaft cover (14), a plurality of small springs (25) are abutted between the ring plate (23) and the inner side surface of the outer shaft cover (12), two baffles (24) are symmetrically fixedly connected to the ring plate (23), and the baffles (24) are slidably connected to the outer shaft cover (12).

3. The rotating safety hook assembly directly connected to the chain according to claim 2, characterized in that: The outer shaft cover (12) and the inner shaft cover (14) are each provided with two shaft cover holes (15), the two shaft cover holes (15) being slidably connected to the shaft pin assembly, and the outer shaft cover (12) and the inner shaft cover (14) are also respectively provided with two U-grooves (13), and the mouth-shaped chain (22) is in contact with the two U-grooves (13).

4. The rotating safety hook assembly directly connected to the chain according to claim 3, characterized in that: The shaft pin assembly comprises a support block (16), wherein the support block (16) is symmetrically fixed to the side of the outer shaft cover (12), a chamber is provided in the support block (16), a spring (19) is arranged in the chamber, a long rod (17) passes through the top of the support block (16), the spring (19) is sleeved on the long rod (17), one end of the long rod (17) extends out of the housing (2), the long rod (17) is slidably connected to the housing (2), a rod head (18) is fixedly connected to the end of the long rod (17) extending out of the housing (2), a clamping head (20) is fixedly connected to the other end of the long rod (17), the spring (19) abuts against the clamping head (20), a pin (21) is fixedly connected to the side of the clamping head (20) away from the spring (19), the pin (21) is slidably connected to the shaft cover hole (15), and the pin (21) is slidably connected to the main shaft (7).

5. The rotating safety hook assembly directly connected to the chain according to claim 4, characterized in that: The main shaft (7) is provided with two shaft cover holes (15), the two shaft cover holes (15) are slidably connected to the pin (21), the main shaft (7) is symmetrically provided with two chain grooves (26), the chain grooves (26) are in contact with the mouth chain (22), the main shaft (7) is also provided with a bead mouth (8), a bolt is rotatably connected in the bead mouth (8), the main shaft (7) is provided with an inner groove (9), the inner groove (9) is communicated with the bead mouth (8), a plurality of balls (10) are rotatably connected to the inner groove (9), the balls (10) are rotatably connected to the hook shaft (5), and the diameter of the bead mouth (8) is larger than the diameter of the balls (10).

6. The rotating safety hook assembly directly connected to the chain according to claim 5, characterized in that: An outer groove (6) is formed on the hook shaft (5), and the outer groove (6) is rotatably connected to the ball (10).

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