Anti-unhooking self-control device for crane lifting hook
By adopting a combined structure of ratchet, pawl and torsion spring on the driving hook, the self-control and anti-decoupling of the driving hook is realized, solving the problems of inconvenience and safety hazards in the prior art, and improving operational safety and convenience.
Patent Information
- Application Number
- CN202422558061.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The existing anti-decoupling device for driving hooks has safety risks during operation, and the operator's hands are at a high risk of being squeezed and head hit, and it is inconvenient to operate.
An automatic control device for anti-decoupling of driving hook is adopted, and the engagement structure of ratchet and pawl is used to achieve double locking. Combined with the automatic reset function of the torsion spring, the angle adjustment and automatic reset of the pawl is controlled by the lever to control the lifting of the pawl.
It improves operation safety, reduces the risk of operators' hands being squeezed and head hit, makes operation more convenient and reduces safety risks.
Smart Images
Figure CN223175636U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting equipment, in particular to an automatic control device for preventing the hook of an overhead crane from disengaging. Background Technique
[0002] The automatic control device for preventing the hook of an overhead crane from disengaging is a safety device used for lifting equipment (such as bridge cranes and gantry cranes), aiming to prevent the hook from accidentally disengaging during operation, thereby ensuring the safety of the lifted items. This device is designed considering the convenience of user operation and is widely used in places that require lifting heavy objects, such as construction sites, ports, warehouses, and manufacturing industries. It significantly improves the safety of lifting operations, protects operators and equipment, reduces the probability of accidents, and has become an indispensable safety configuration in modern lifting technology.
[0003] Since the overhead crane is a special equipment and its hoisting is long-term high-altitude hoisting, in order to avoid the lifted items from disengaging the hook, anti-disengagement devices have been added. In the prior art, the anti-disengagement device is a spring-type anti-disengagement device. The operator must press the anti-disengagement piece with one hand (if the hand is released, the anti-disengagement piece will pop out to form a closed loop with the hook) to remove the lifted item, and hold the lifting ring with the other hand. This increases potential safety hazards for the operator. There have also been many work injury cases where the operator's hand was squeezed or the head was hit. Now, a newly made anti-disengagement device is added with an anti-return tooth and a safety pin, which can make the anti-disengagement device stay at any position. When removing and installing the suction cup, the operator does not need to press the anti-disengagement piece with his hand, and can easily remove and install the suction cup, protecting the hand from being squeezed and preventing the head from being injured, achieving convenient and simple operation, reducing potential safety hazards and work injuries. Content of the Utility Model
[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose an automatic control device for preventing the hook of an overhead crane from disengaging.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: an automatic control device for preventing the hook of an overhead crane from disengaging, including a hoisting device. Inside the hoisting device, there is a hook body. A fixed frame is fixedly connected to the outer wall of the hook body. A connecting shaft is rotatably connected inside the fixed frame. An anti-disengagement buckle is fixedly connected to the outer wall of the connecting shaft. The anti-disengagement buckle is arranged between the fixed frames. A ratchet one is fixedly connected to one side of the outer wall of the connecting shaft.
[0006] As a further description of the above technical scheme: A shaft pin is rotatably connected inside the fixed frame. A pawl one is fixedly connected to one side of the outer wall of the shaft pin. The pawl one meshes with the ratchet one. A lever is fixedly connected to the upper surface of the pawl one.
[0007] As a further description of the above technical solution: a second ratchet is fixedly connected to the other side of the outer wall of the connecting shaft, and a second ratchet is fixedly connected to the other side of the outer wall of the shaft pin.
[0008] As a further description of the above technical solution: the second ratchet is engaged with the second pawl, and the second pawl is fixedly connected to the lower surface of the shift rod.
[0009] As a further description of the above technical solution: a fixing rod is fixedly connected to the interior of the lifting device, and a torsion spring is sleeved on the outer wall of the fixing rod.
[0010] As a further description of the above technical solution: one end of the torsion spring is fixedly connected to the inside of the anti-tripping buckle, and the other end of the torsion spring is fixedly connected to the inside of the hook body.
[0011] The utility model has the following beneficial effects:
[0012] 1. Compared with the existing technology, this automatic anti-unhooking device for crane hooks rotates the anti-unhooking by toggling the anti-unhooking. The anti-unhooking rotates at the same time as the connecting shaft rotates. The connecting shaft rotates at the same time as the ratchet rotates. The ratchet is self-locked by a pair of pawls to prevent the anti-unhooking from rebounding.
[0013] 2. Compared with the existing technology, this automatic anti-unhooking device for the crane hook drives the connecting shaft to rotate while the anti-tripping button rotates. The connecting shaft also drives the second ratchet to rotate while the second ratchet is self-locked, thereby achieving a double locking effect.
[0014] 3. Compared with the existing technology, this automatic control device for preventing the crane hook from unhooking, by lifting the lever upward, drives the ratchet 1 and the ratchet 2 to lift up at the same time. At this time, the ratchet 1 and the ratchet 2 are unlocked, and the rebound effect of the torsion spring is used to drive the anti-tripping to automatically reset. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the overall structure diagram of a crane hook anti-unhooking automatic control device proposed in the utility model;
[0016] Figure 2 This is a structural diagram of a ratchet wheel of an automatic control device for preventing unhooking of a crane hook proposed in the present invention;
[0017] Figure 3 This is a structural diagram of the ratchet wheel 2 of the automatic control device for preventing unhooking of a crane hook proposed in the utility model;
[0018] Figure 4 This is a structural diagram of a torsion spring of an automatic control device for preventing unhooking of a crane hook proposed in the utility model.
[0019] Legend:
[0020] 1. Lifting equipment; 2. Hook body; 3. Fixed frame; 4. Connecting shaft; 5. Anti-disengagement buckle; 6. Ratchet one; 7. Axle pin; 8. Pawl one; 9. Lever; 10. Ratchet two; 11. Pawl two; 12. Fixed rod; 13. Torsion spring. Specific implementation mode
[0021] Referring to Figures 1-4 , a self - control device for preventing the disengagement of a traveling crane hook provided by the utility model: It includes a lifting equipment 1. Inside the lifting equipment 1, there is a hook body 2. The outer wall of the hook body 2 is fixedly connected with a fixed frame 3. Inside the fixed frame 3, there is a connecting shaft 4 rotatably connected. On the outer wall of the connecting shaft 4, there is an anti - disengagement buckle 5 fixedly connected. The rotation of the anti - disengagement buckle 5 drives the rotation of the connecting shaft 4. The anti - disengagement buckle 5 is arranged between the fixed frames 3. On one side of the outer wall of the connecting shaft 4, there is a ratchet one 6 fixedly connected. The rotation of the connecting shaft 4 drives the rotation of the ratchet one 6. Inside the fixed frame 3, there is an axle pin 7 rotatably connected. On one side of the outer wall of the axle pin 7, there is a pawl one 8 fixedly connected. The pawl one 8 meshes with the ratchet one 6. The ratchet one 6 is locked by the pawl one 8 to prevent the ratchet one 6 from rotating by itself. On the upper surface of the pawl one 8, there is a lever 9 fixedly connected. The lever 9 can drive the pawl one 8 to lift, thereby canceling the lock on the ratchet one 6.
[0022] On the other side of the outer wall of the connecting shaft 4, there is a ratchet two 10 fixedly connected. The connecting shaft 4 drives the rotation of the ratchet two 10. On the other side of the outer wall of the axle pin 7, there is a pawl two 11 fixedly connected. The axle pin 7 drives the rotation of the pawl two 11. The ratchet two 10 meshes with the pawl two 11. The pawl two 11 locks the ratchet two 10. The pawl two 11 is fixedly connected to the lower surface of the lever 9. The lever 9 can drive the pawl two 11 to lift, thereby canceling the lock on the ratchet two 10.
[0023] Inside the lifting equipment 1, there is a fixed rod 12 fixedly connected. A torsion spring 13 is sleeved on the outer wall of the fixed rod 12. One end of the torsion spring 13 is fixedly connected inside the anti - disengagement buckle 5, and the other end of the torsion spring 13 is fixedly connected inside the hook body 2. The elastic action of the torsion spring 13 has an automatic reset effect on the anti - disengagement buckle 5.
[0024] Working principle: When in use, first, the pawl one 8 and the pawl two 11 are respectively stuck in the tooth grooves of the ratchet one 6 and the ratchet two 10 to limit the anti - disengagement buckle 5. Push the anti - disengagement buckle 5 towards the center direction of the hook body 2, so that the anti - disengagement buckle 5 rotates leftward by an angle (such as Figure 1As shown, while the anti-tripping device 5 rotates, it drives the connecting shaft 4 to rotate clockwise inside the fixed bracket 3, thereby driving the first ratchet wheel 6 and the second ratchet wheel 10 to rotate clockwise simultaneously. The first pawl 8 and the second pawl 11 are respectively stuck in the tooth grooves of the first ratchet wheel 6 and the second ratchet wheel 10 for limiting, preventing the first ratchet wheel 6 and the second ratchet wheel 10 from rotating by themselves, so as to realize the free adjustment of the angle of the anti-tripping device 5 and prevent the anti-tripping device 5 from rebounding, which is convenient for taking out the hoisted object. After the hoisted object is taken out, lift the lever 9 upward. The lever 9 drives the first pawl 8 and the second pawl 11 to lift upward simultaneously by an angle. After the first pawl 8 and the second pawl 11 are lifted, using the elastic principle of the torsion spring 13, drive the anti-tripping device 5 to rotate and automatically reset by an angle.
[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An anti - decoupling self - control device for a hoisting hook of a traveling crane, comprising a hoisting device (1), characterized in that: Inside the lifting device (1), there is a hook body (2). A fixing frame (3) is fixedly connected to the outer wall of the hook body (2). A connecting shaft (4) is rotatably connected inside the fixing frame (3). An anti-disengagement buckle (5) is fixedly connected to the outer wall of the connecting shaft (4). The anti-disengagement buckle (5) is arranged between the fixing frames (3). On one side of the outer wall of the connecting shaft (4), a first ratchet wheel (6) is fixedly connected.
2. The self-control device for preventing the derailment of a traveling crane hook according to claim 1, wherein: A pin (7) is rotatably connected inside the fixing frame (3). On one side of the outer wall of the pin (7), a first ratchet pawl (8) is fixedly connected. The first ratchet pawl (8) meshes with the first ratchet wheel (6). A lever (9) is fixedly connected to the upper surface of the first ratchet pawl (8).
3. The self-control device for preventing the lifting hook of a traveling crane from disengaging according to claim 2, characterized in that: On the other side of the outer wall of the connecting shaft (4), a second ratchet wheel (10) is fixedly connected. On the other side of the outer wall of the pin (7), a second ratchet pawl (11) is fixedly connected.
4. The self-control device for preventing the lifting hook of a traveling crane from disengaging according to claim 3, wherein: The second ratchet wheel (10) meshes with the second ratchet pawl (11). The second ratchet pawl (11) is fixedly connected to the lower surface of the lever (9).
5. The self-control device for preventing the lifting hook of a traveling crane from disengaging according to claim 1, characterized in that: A fixed rod (12) is fixedly connected inside the lifting device (1). A torsion spring (13) is sleeved on the outer wall of the fixed rod (12).
6. The self-control device for preventing the lifting hook of a traveling crane from disengaging according to claim 5, characterized in that: One end of the torsion spring (13) is fixedly connected inside the anti-disengagement buckle (5), and the other end of the torsion spring (13) is fixedly connected inside the hook body (2).