Crane hook with safety protection function

Abstract

The utility model relates to the technical field of lifting hooks, and discloses a crane lifting hook with a safety protection function, which comprises an adjuster and a plurality of lifting hooks detachably mounted at the bottom of the adjuster, a locking assembly used for locking the wire coil is further installed in the adjuster, a pull rope is wound around the wire coil, and one end of the pull rope extends out of the adjuster to be fixedly connected with one end of the lifting hook. According to the utility model, the wire coil is rotatably mounted in the regulator and the pull rope fixed with the lifting hook is wound on the wire coil, so that when the lifting hook is not used, the wire coil can rotate to tighten the pull rope, the distance between the lifting hook and the regulator can be shortened, and if the lifting hook is not used, the swing amplitude of the lifting hook is reduced, and the safety of the lifting hook is improved. And collision with surrounding obstacles is avoided, so that the safety performance of the lifting hook is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hooks, in particular to a crane hook with a safety protection function. Background Art

[0002] The hook is the most common type of lifting device in lifting machinery. The hook is often suspended on the wire rope of the lifting mechanism with the help of pulleys and other components.

[0003] When lifting objects, multiple hooks are usually used to hang them at different positions of the objects. This can prevent the objects from shifting due to gravity during the lifting process. However, the current multiple hooks are usually connected to connectors through chain ropes. Since the distance between the connector and the hook is relatively far, if the hook is not in use, the hook is prone to collide with surrounding obstacles during the operation of the crane, which poses a certain risk.

[0004] Therefore we propose a crane hook with safety protection function, so as to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the utility model is to solve the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a crane hook with a safety protection function, comprising an adjuster and a plurality of hooks detachably mounted on the bottom of the adjuster, wherein the interior of the adjuster is rotatably mounted with wire drums having the same number as the hooks, and the interior of the adjuster is also mounted with a locking assembly for locking the wire drums, a pull rope is wound around the wire drum, and one end of the pull rope extends to the outside of the adjuster and is fixedly connected to one end of the hook.

[0007] Furthermore: a mounting plate is fixed on the top of the hook, a fixing plate is fixed on the bottom of the adjuster, and the mounting plate and the fixing plate are connected by a plurality of fixing bolts.

[0008] Furthermore: a rotating shaft of a fixed rod is arranged at the axis of the wire drum, and both ends of the rotating shaft are respectively rotatably connected to a rotating sleeve fixed on the inner wall of the regulator, and a driving groove extending to the outside of the regulator is provided at the end of the rotating shaft.

[0009] Further: the locking assembly includes a mounting shaft fixed to the inner side wall of the regulator and a ratchet rotatably mounted on the mounting shaft; a ratchet wheel used in conjunction with the ratchet wheel is fixed to one side of the wire drum.

[0010] Further: a mounting ring is fixed to one side of the ratchet and the inner side wall of the adjuster respectively, and a same tension spring is installed between the two mounting rings.

[0011] Furthermore: a knob is installed on the outside of the regulator, a connecting shaft rotatably installed in the regulator is fixed on one side of the knob, and one end of the connecting shaft extends to the inside of the regulator and a cam is fixed thereon, two pressure plates are arranged below the cam, and the two pressure plates are respectively fixed on the outer surfaces of the ratchet.

[0012] Furthermore: reflective strips are respectively attached to both sides of the adjuster.

[0013] Beneficial effects of the utility model:

[0014] The utility model has a wire drum rotatably installed inside the adjuster, and a pull rope fixed to the hook is wound on the wire drum. When the hook is not in use, the pull rope can be tightened by rotating the wire drum, and the distance between the hook and the adjuster can be shortened. When the hook is not in use, the swing amplitude of the hook is reduced to avoid collision with surrounding obstacles, thereby improving the safety performance of the hook.

[0015] The utility model has a locking assembly installed on the inner side wall of the adjuster. After the wire drum is put into the pull rope at a suitable length, the wire drum can be locked by the locking assembly, so that the length of the pull rope can be adjusted according to the needs of the user, thereby improving the use effect of the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the first use state structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the second use state of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the regulator in the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the regulator in the utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the center line reel and the hook of the utility model;

[0021] Figure 6 It is a schematic diagram of the connection structure between the ratchet and the tension spring in the utility model;

[0022] Figure 7 It is a schematic diagram of the connection structure of the knob and the cam in the utility model.

[0023] The names corresponding to the marks in the figure are:

[0024] 1. Regulator; 2. Hook; 3. Reel; 301. Rotating shaft; 302. Rotating sleeve; 303. Driving slot; 4. Locking assembly; 401. Mounting shaft; 402. Ratchet; 403. Ratchet; 5. Pull rope; 6. Mounting plate; 7. Fixed plate; 8. Mounting ring; 9. Tension spring; 10. Knob; 11. Connecting shaft; 12. Cam; 13. Pressure plate; 14. Reflective strip; 15. Pulley; 16. Bearing. DETAILED DESCRIPTION

[0025] 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 belong to the scope of protection of the utility model.

[0026] Embodiment 1

[0027] A crane hook with a safety protection function comprises an adjuster 1, and reflective strips 14 are respectively attached to both sides of the adjuster 1. Through the setting of the reflective strips 14, when working at night, when the light source shines on the upper part of the reflective strips 14, it plays a reflective role, and the surrounding staff can clearly observe the position of the hook; the top of the adjuster 1 is symmetrically provided with mounting holes 101, and the same pulley 15 is rotatably installed inside the two mounting holes 101. The pulley 15 is sleeved on the steel wire rope of the crane (not shown in the figure). Through the setting of the pulley 15, the adjuster 1 can move up and down smoothly; a plurality of hooks 2 are installed at the bottom of the adjuster 1, and the number of the hooks 2 is preferably two. Through the setting of the plurality of hooks 2, objects can be hung on the plurality of hooks 2 respectively, and the objects are evenly stressed during the lifting process.

[0028] During the lifting process, multiple parts of the cargo can be hung on the hook 2 respectively. The cargo is evenly stressed during the lifting process, which reduces the possibility of the cargo deflecting or even falling from a high altitude due to gravity, thereby improving the safety of the hook.

[0029] Embodiment 2

[0030] Although the above embodiment 1 can make the cargo evenly stressed during the lifting process and prevent the cargo from being offset due to gravity; however, when multiple hooks are used to lift the cargo, several hooks need to be connected to the connector through ropes. If the hooks are not used, the distance between the hooks and the connector is too far. During the operation of the crane, the hooks swing greatly and are prone to collide with surrounding obstacles, which poses a certain risk. Therefore, in order to solve the above technical defects, improvements are made on the basis of the embodiment 1;

[0031] A wire drum 3 is installed inside the regulator 1, and the number of wire drums 3 is the same as the number of hooks 2; in detail: a rotating shaft 301 is fixed at the axis of the wire drum 3, and the two ends of the rotating shaft 301 are respectively fixed to the inside of the rotating sleeve 302 through bearings 16, and the rotating sleeve 302 is fixed to the inner wall of the regulator 1. Through the setting of the bearing 16, the wire drum 3 can rotate smoothly between the rotating sleeves 302, thereby improving the smoothness of the hook; a driving groove 303 is opened at the end of the rotating sleeve 302, and the driving groove 303 passes through the rotating sleeve 302 and extends to the outside of the regulator 1. Through the setting of the driving groove 303, when a polygonal wrench (not shown in the figure) is inserted into the driving groove 303, the wire drum 3 can be driven to rotate, thereby tightening the pull rope 5. When the hook is not in use, it is prevented from colliding with surrounding obstacles due to excessive swinging amplitude of the hook.

[0032] A pull rope 5 is wound around the wire drum 3, and the pull rope 5 usually refers to a steel wire rope. It should be noted that one end of the pull rope 5 is fixed to the wire drum 3 to prevent the pull rope 5 from falling off the wire drum 3, and the other end of the wire drum 3 passes through the bottom of the adjuster 1 and is fixedly connected to the top of the hook 2; if a traction rope is needed, the hook 2 can be pulled by the pull rope 5, and different positions of the object can be lifted by multiple hooks 2.

[0033] A mounting shaft 401 is symmetrically fixed inside the regulator 1, and a rotating hole 4021 is opened on the ratchet 402, and the ratchet 402 is rotatably mounted on the mounting shaft 401 through the rotating hole 4021; a ratchet wheel 403 is fixed to one side of the wire drum 3, and under normal circumstances: the ratchet 402 falls onto the ratchet wheel 403 due to its own gravity, and the cooperation between the ratchet 402 and the ratchet wheel 403 plays a role of one-way locking of the wire drum 3, and prevents the hook 2 from falling downward due to its own gravity during use; mounting rings 8 are fixed to one side of the ratchet 402 and the inner side wall of the regulator 1, and the same tension spring 9 is installed between the two mounting rings 8. Through the setting of the tension spring 9, the ratchet 402 is pulled to prevent the ratchet 402 from rotating upward during use.

[0034] A through hole 102 is provided on one side of the regulator 1, and the through hole 102 is located above between the two mounting shafts 401. A connecting shaft 11 is rotatably installed inside the through hole 102. One end of the connecting shaft 11 extends to the outside of the regulator 1 and is fixed with a knob 10. Through the setting of the knob 10, the connecting shaft 11 can be driven to rotate. The other end of the connecting shaft 11 extends to the inside of the regulator 1 and is fixed with a cam 12. Through the setting of the cam 12, pressure can be applied to the pressure plate 13 fixed on the outer surface of the ratchet 402, so that the ratchet 402 can rotate upward with the axis of the mounting shaft 401 as the center, thereby opening the locked wire drum 3.

[0035] In detail: a mounting plate 6 is fixed to the top of the hook 2, a fixing plate 7 is fixed to the bottom of the adjuster 1, a plurality of mounting holes are equidistantly provided on the outer surface of the mounting plate 6 along the circumferential direction, and threaded holes corresponding to the mounting holes are equidistantly provided on the fixing plate 7 along the circumferential direction; if the pull rope 5 is not used, when the mounting holes on the mounting plate 6 are compared with the threaded holes on the fixing plate 7, fixing bolts (not shown in the figure) pass through the mounting holes and are threadedly connected with the threaded holes, so that the mounting plate 6 and the fixing plate 7 can be tightened, and the objects can be lifted directly through the plurality of hooks 2 under the adjuster 1.

[0036] When the cargo is lifted without using the pull rope 5: first, align the mounting plate 6 and the fixing plate 7, align each mounting hole with the threaded hole, and first pass the fixing bolt through the mounting hole and threadedly connect with the threaded hole, thereby fastening the hook 2. By lifting the cargo separately with multiple hooks 2, the cargo is subjected to more uniform force, avoiding the cargo from shifting or even falling due to the center of gravity, thereby improving safety performance.

[0037] When using the pull rope 5 to lift the cargo: first, loosen several fixing bolts, then rotate the knob 10, the knob 10 can drive the cam 12 to rotate downward through the connecting shaft 11, and the cam 12 can apply pressure to the two pressure plates 13, the pressure plate 13 can drive the ratchet 402 to rotate upward around the axis of the rotating sleeve 302, one end of the ratchet 402 can be detached from the ratchet wheel 403, and then the hook 2 can be pulled, the hook 2 can pull out the pull rope 5 wrapped around the reel 3, and then the hook 2 can be operated in the same way as above, and secondly, multiple hooks 2 can be hung at different positions of the cargo to lift the cargo.

[0038] When tightening the pull rope 5: the polygonal wrench is inserted into the interior of the rotating shaft 301 and drives the rotating shaft 301 to rotate in the opposite direction. The rotating shaft 301 can drive the wire drum 3 to rotate, and the wire drum 3 can wind the pull rope, thereby tightening the pull rope 5 and shortening the distance between the hook 2 and the adjuster 1. During the driving process of the crane, the hook 2 is prevented from swinging too much and colliding with surrounding obstacles, thereby improving safety.

Claims

1. A crane hook with a safety protection function, comprising an adjuster (1) and a plurality of hooks (2) detachably mounted on the bottom of the adjuster (1), characterized in that; The adjuster (1) has wire drums (3) with the same number as the hooks (2) installed inside in a rotatable manner. The adjuster (1) also has locking components (4) installed inside for locking the wire drums (3). A pull rope (5) is wound around the wire drum (3). One end of the pull rope (5) extends to the outside of the adjuster (1) and is fixedly connected to one end of the hook (2).

2. A crane hook with safety protection function according to claim 1, characterized in that: A mounting plate (6) is fixed to the top of the hook (2), and a fixing plate (7) is fixed to the bottom of the adjuster (1); the mounting plate (6) and the fixing plate (7) are connected via a plurality of fixing bolts.

3. The crane hook with safety protection function according to claim 1, characterized in that: A rotating shaft (301) is fixed at the axis of the wire drum (3), and both ends of the rotating shaft (301) are respectively rotatably connected to a rotating sleeve (302) fixed to the inner wall of the regulator (1), and a driving groove (303) extending to the outside of the regulator (1) is formed at the end of the rotating shaft (301).

4. A crane hook with safety protection function according to claim 1 or 3, characterized in that: The locking assembly (4) comprises a mounting shaft (401) fixed to the inner side wall of the regulator (1) and a ratchet (402) rotatably mounted on the mounting shaft (401); a ratchet wheel (403) used in conjunction with the ratchet (402) is fixed to one side of the wire drum (3).

5. The crane hook with safety protection function according to claim 4, characterized in that: A mounting ring (8) is fixed to one side of the ratchet (402) and the inner side wall of the regulator (1), respectively, and a tension spring (9) is installed between the two mounting rings (8).

6. The crane hook with safety protection function according to claim 4, characterized in that: A knob (10) is installed on the outside of the regulator (1), a connecting shaft (11) rotatably installed in the regulator (1) is fixed to one side of the knob (10), and one end of the connecting shaft (11) extends to the inside of the regulator (1) and a cam (12) is fixed thereto, and two pressure plates (13) are arranged below the cam (12), and the two pressure plates (13) are respectively fixed to the outer surfaces of the ratchet teeth (402).

7. The crane hook with safety protection function according to claim 1, characterized in that: Reflective strips (14) are respectively attached to both sides of the adjuster (1).

Images