Hoisting anti-unhooking safety device of crane

Abstract

The utility model relates to the technical field of metallurgy, and particularly discloses an anti-unhooking safety device for hoisting of a crane. Comprising a hook handle and a hook body. An anti-unhooking mechanism is arranged at one end, connected with the lifting hook main body, of the lifting hook handle; the anti-unhooking mechanism is hinged with the lifting hook handle; a hinged bulge is arranged at the joint of the lifting hook handle and the lifting hook main body; a hinging hole is formed in the hinging bulge; the lifting hook handle and the lifting hook main body are integrally arranged; the lifting hook main body comprises a connecting end, a bearing end and a hook tip part; a clamping groove is formed in the connecting end; the two ends of the anti-unhooking mechanism make contact with the clamping groove in the inner side of the hook tip part and the outer side of the connecting end respectively. The anti-unhooking safety device for hoisting of the crane is ingenious and practical in design, and the safety of the crane in the hoisting process is effectively improved. By means of the unique design of the anti-unhooking mechanism, clamping is naturally completed through gravity, the clamping state is a normal state, additional operation is not needed, the using steps are simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of industrial equipment and safety technology, in particular to a crane hoisting anti-unhooking safety device. Background Art

[0002] Cranes are widely used in the field of metallurgy. Whether it is the loading and unloading of raw materials in large steel mills or the transfer of materials in the process of precision casting, they are inseparable from the help of cranes. However, during the use of cranes, especially the hook part, there is often a problem of slipping, which not only affects production efficiency, but also may pose a threat to the life safety of on-site workers. On the one hand, by optimizing the design of the crane, the load-bearing capacity and stability of the hook are enhanced, and the slipping phenomenon caused by overload or vibration is reduced. On the other hand, the daily maintenance and inspection of the crane are strengthened to ensure the normal operation of each component, and to promptly discover and deal with possible safety hazards. However, despite these measures, the problem of crane hook slipping has not been completely solved.

[0003] Cranes are widely used in the metallurgical field, and their hooks are prone to slipping. We use anti-unhooking settings to prevent the goods from falling off. We propose anti-unhooking settings from the following aspects. Select high-strength and wear-resistant materials, and conduct strict quality inspections on the hooks to ensure their service life and carrying capacity. Install a special anti-unhooking device on the hook, such as a locking mechanism, a spring buffer, etc., so that it can quickly play a role and prevent the goods from falling off when the hook accidentally slips. Enhance the safety awareness and operating skills of the operators so that they can operate the crane correctly and skillfully and reduce the risk of the hook slipping. For goods that are easy to slip, effective packaging measures should be taken, such as using anti-slip materials, reinforcing the packaging structure, etc., to reduce the shaking amplitude of the goods during transportation.

[0004] In the patent "Anti-unhooking" (publication number CN201513455U, hereinafter referred to as prior art 1), an anti-unhooking device is disclosed. The main technical principle in prior art 1 is to close and open the anti-unhooking opening by rotating the anti-unhooking device around the hook handle or the hook, and the anti-unhooking device and the hook handle or the hook can be loosened and tightened in the form of threads, various elastic reset parts, etc. The anti-unhooking device and the hook head are tightly closed by tightening the anti-unhooking device and the hook handle or the hook, and the anti-unhooking device and the hook head can be loosened and tightened with each other directly or simultaneously in the form of sleeves, buckles, clamps, etc. to achieve the anti-unhooking function of the anti-unhooking. The anti-unhooking in prior art 1 requires the anti-unhooking part to be manually moved to the specified position to complete the anti-unhooking. During the working process, the anti-unhooking work may not be completed due to the worker's erroneous operation or forgetting to move the anti-unhooking part to the specified position. The setting in the prior art 1 requires manual operation, which makes the operation inconvenient and may cause accidents due to negligence in actual operation. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a crane hoisting anti-unhooking safety device to solve the problem that the anti-unhooking device in the prior art needs to be manually moved to a specified position to prevent unhooking.

[0006] An embodiment of the utility model provides a crane hoisting anti-unhooking safety device, comprising a hook handle and a hook body connected to the hook handle; an anti-unhooking mechanism is provided at one end of the hook handle connected to the hook body; the anti-unhooking mechanism is hinged to the hook handle; the hook handle is arranged in a cylindrical shape; a hinge protrusion is provided at the connection between the hook handle and the hook body; the hinge protrusion is provided with a hinge hole; the hook handle and the hook body are integrated; the hook body comprises a connecting end, a receiving end and a hook tip part; a clamping groove is provided on the inner side of the connecting end; the two ends of the anti-unhooking mechanism are respectively arranged in contact with the clamping groove on the inner side of the hook tip part and the outer side of the connecting end.

[0007] Preferably, the anti-unhooking mechanism comprises a first clamping end and a second clamping end; the first clamping end and the second clamping end are connected to each other; and a hinge shaft is provided at the connection between the first clamping end and the second clamping end.

[0008] Preferably, the cross-sections of the first clamping end and the second clamping end are both in the shape of an isosceles trapezoid; and the height of the second clamping end is higher than that of the first clamping end.

[0009] Preferably, the first clamping end is clamped in cooperation with the clamping groove; and the second clamping end is clamped in contact with the outer side of the connecting end.

[0010] Preferably, the width of one end of the first clamping end that is clamped with the clamping groove is greater than the width of the clamping groove; and the height of the second clamping end is less than the width from the connecting end to the bottom of the receiving end.

[0011] Preferably, the connecting end, the receiving end and the hook tip portion are combined to form a hanging cavity inside the hook body; the distance between the inner side surface of the tip portion and the connecting end is the receiving object entry width.

[0012] Preferably, the length of the first clamping end is set to be greater than the width of the receiving object.

[0013] Preferably, the hinge shaft of the anti-unhooking mechanism is arranged in the hinge hole of the hinge protrusion; the anti-unhooking mechanism is connected to the hinge hole through the hinge shaft and rotates based on the hinge hole.

[0014] Preferably, the first clamping end and the second clamping end are both connected via an end with a narrower width.

[0015] Preferably, after the first clamping end is clamped with the clamping groove, the hanging cavity is set in a closed manner.

[0016] The utility model provides a crane hoisting anti-unhooking safety device with the following beneficial effects:

[0017] The hinged design of the anti-unhooking mechanism and the hook handle enables the anti-unhooking mechanism to operate flexibly, which can not only ensure stability during the lifting process, but also respond quickly when encountering unexpected situations to prevent unhooking accidents. This design greatly improves the safety of crane lifting operations. The two ends of the anti-unhooking mechanism are respectively set in contact with the clamping groove on the inner side of the hook tip and the outer side of the connection end. This design effectively limits the shaking range of the hook during the lifting process, thereby further preventing the occurrence of unhooking. At the same time, the setting of the clamping groove also makes the connection between the anti-unhooking mechanism and the hook body more secure, enhancing the reliability of the entire device. This anti-unhooking safety device has a reasonable design and structural layout, and naturally completes the clamping through the action of gravity, making the clamping state a normal state without the need for additional operations, simplifying the use steps, and improving work efficiency and safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0019] Figure 1It is a three-dimensional structural diagram of a crane hoisting anti-unhooking safety device in a clamping state;

[0020] Figure 2 It is a schematic diagram of the main structure of the hook of a crane hoisting anti-unhooking safety device;

[0021] Figure 3 It is a schematic diagram of the structure of a crane hoisting anti-unhooking safety device in a non-clamped state;

[0022] Figure 4 It is a schematic diagram of the structure in Example 4;

[0023] Figure 5 is a schematic diagram of the structure in Example 5;

[0024] Parts and numbers in the picture:

[0025] 100-hook handle, 110-hinged protrusion, 120-hinged hole;

[0026] 200-hook body, 210-connecting end, 211-clamping groove, 220-receiving end, 230-hook tip, 240-hook cavity, 250-receiving object entry width;

[0027] 310-first clamping end, 320-second clamping end, 330-hinge axis;

[0028] 410-fastener seat, 420-fastener body, 430-fastening groove;

[0029] 510-weight block, 520-rubber. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0031] Example 1

[0032] See also Figure 1 The embodiment of the utility model provides a crane hoisting anti-unhooking safety device. In metallurgical plants, lifting machines are generally used to unload recycled scrap iron from trains; lifting machines, as an important type of engineering machinery, can also be used in the fields of construction, logistics, and manufacturing. However, during use, a large number of unhooking accidents occur when cranes are hoisting objects, and the occurrence of unhooking accidents often leads to property losses and casualties. Therefore, this crane hoisting anti-unhooking safety device is intended to improve the safety of the crane during use and reduce the risk of accidents.

[0033] See also Figure 1A crane hoisting anti-unhooking safety device comprises a hook handle 100 and a hook body 200 connected to the hook handle 100; an anti-unhooking mechanism is provided at one end of the hook handle 100 connected to the hook body 200. The hook is an important part of the crane, which is responsible for hoisting goods and ensuring the safety of the goods. The hook is mainly composed of a hook handle 100 and a hook body 200, which are closely connected to complete the hoisting task together. One end of the hook handle 100 is connected to the hook body 200, and the other end is connected to the crane, so that the hook body 200 can be smoothly connected to the crane. The hook body 200 extends out from the hook handle 100, and the hook handle 100 and the hook body 200 are connected as the connecting part between the hook body 200 and the crane, connecting the hook body 200 to the crane. Generally, the hook body 200 can be rotated by the hook handle 100 to facilitate hoisting of goods.

[0034] See also Figure 1 , the anti-unhooking mechanism is hinged to the hook handle 100. The anti-unhooking mechanism rotates based on the hinge with the hook handle 110, and the positions of its two ends are adjusted. By adjusting the positions of the two ends of the anti-unhooking mechanism, the two ends of the anti-unhooking device are in contact with the hook body 200. The anti-unhooking mechanism is hinged to the hook handle 100, and it rotates based on the hinge with the hook handle 100, and the positions of its two ends are adjusted. This design enables the anti-unhooking mechanism to effectively control the hook during the lifting process, prevent the cargo from accidentally falling off during the lifting process, and ensure the safety of the cargo. By adjusting the positions of the two ends of the anti-unhooking mechanism, the two ends of the anti-unhooking device can be in close contact with the hook body 200. In this way, no matter how the cargo shakes during the lifting process, the anti-unhooking mechanism can set the following hanging cavity 240 in a closed manner, ensure that the hook is stably connected to the cargo, and effectively prevent the occurrence of cargo falling accidents.

[0035] See also Figure 1 and Figure 3The hook handle 100 is cylindrically shaped, so that it can withstand greater force and is safer during the lifting process. A hinge protrusion 110 is provided at the connection between the hook handle 100 and the hook body 200; the hinge protrusion 110 is provided with a hinge hole 120. The anti-unhooking device is hinged to the hook body 200, that is, the part of the anti-unhooking device that rotates based on the hook handle 100. The hinge protrusion 110 and the hook handle 100 are integrated, and a hole is provided on the hinge protrusion 110, which is the hinge hole 120. The hinge hole 120 is a through setting on the hinge protrusion 110, which is convenient for installing the hinge shaft 330 described below, so that it can rotate inside the hinge hole 120. And after the hinge protrusion 110 and the hook handle 100 are integrated, its mechanical properties are more excellent and less prone to damage. In the prior art, in order to set the hinged part, generally an external hinged part is used, and the hinged part is not only not strong enough, but also easy to be damaged. Since the weight to be lifted is not low, it is easy to be damaged due to insufficient bearing capacity, resulting in accidents.

[0036] See also Figure 1 or Figure 2 , the hook handle 100 is integrated with the hook body 200; the hook body 200 includes a connecting end 210, a receiving end 220 and a hook tip 230. Although the hook body 200 is integrated, it can be divided into three parts from the perspective of its function, namely, the connecting end 210, the receiving end 220 and the hook tip 230. The connecting end 210 is a part connected to the hook handle 100. The receiving end 220 is a part for receiving the object to be lifted, and the lifting is performed by hanging a rope tied with a heavy object into the receiving end 220.

[0037] See also Figure 2 In the figure, "L" is the width 250 of the receiving object; the hook tip 230 is bent toward the inside of the hanging cavity 240 to reduce the width 250 of the receiving object. The hook tip 230 is also used to contact and engage with one end of the anti-unhooking mechanism to close the hanging cavity 240.

[0038] See also Figure 1, a snap-in groove 211 is provided on the inner side of the connecting end 210; the two ends of the anti-unhooking mechanism are respectively arranged in contact with the snap-in groove 211 on the inner side of the hook tip part 230 and the outer side of the connecting end 210. Generally, the anti-unhooking mechanism is configured to be snap-fitted with the hook tip part 230 at one end, but after a long period of cooperation between the hook tip part 230 and the anti-unhooking mechanism, a large amount of friction will occur, which will grind the snap-fitted parts and make them gradually smooth. When the friction force is reduced, the snap-fitting effect will decrease. By providing a snap-in groove 211, one end of the anti-unhooking mechanism is directly limited by the snap-in groove 211, and even after a long period of friction, it will not break through the position of the snap-in groove 211, so that it can always maintain a safe snap-fitting position.

[0039] Example 2

[0040] See also Figure 1 The embodiment of the utility model provides a crane hoisting anti-unhooking safety device, the anti-unhooking mechanism includes a first clamping end 310 and a second clamping end 320; the first clamping end 310 and the second clamping end 320 are connected to each other; a hinge shaft 330 is provided at the connection between the first clamping end 310 and the second clamping end 320. The first clamping end 310 and the second clamping end 320 are a cylindrical iron rod as a whole, which is bent into a specific shape. A hinge shaft 330 for rotation is provided at the connection between the first clamping end 310 and the second clamping end 320. The hinge shaft 330 is arranged in the hinge hole 120 so that it can rotate in the hinge hole 120.

[0041] Preferably, the cross-sections of the first clamping end 310 and the second clamping end 320 are both set in an isosceles trapezoidal shape. After being set in an isosceles trapezoidal shape, they are connected by the narrower end. The wider end is used as the clamping end for clamping. When the first clamping end 310 and the second clamping end 320 are connected, they are installed at a certain angle. Preferably, the angle is between 60° and 80°; it is set to 61° in this application. In practical applications, it can be adaptively set according to the opening of its hook tip part 230. If the narrower end is used for clamping, the clamping position may change after displacement occurs in the hinge hole 120, resulting in problems with the clamping and failure to clamp. The height of the second clamping end 320 is higher than the height of the first clamping end 310. Since the second clamping end 320 is used in this application to naturally droop by gravity, and then drive the first clamping end 310 to naturally tilt and contact the hook tip part 230, the effect of gravity is more obvious after the second clamping end 320 is set longer. Since the anti-unhooking mechanism is made of metal as a whole, the longer the length, the more metal is used, the heavier it is, and the more obvious the neutral effect is.

[0042] See also Figure 1 , the first clamping end 310 cooperates with the clamping groove 211 for clamping; the second clamping end 320 is arranged in contact clamping with the outer side of the connecting end 210. When in use, the second clamping end 320 naturally droops due to the action of gravity; then it is clamped in contact with the outer side of the connecting end 210, and the end of the second clamping end 320 is in contact with the outer side of the connecting end 210, and the travel is limited by the outer side of the connecting end 210, resulting in clamping. At this time, due to the connection angle between the first clamping end 310 and the second clamping end 320, the first clamp is tilted, and the first clamping end 310 enters the clamping groove 211 when tilted, and closes the hanging cavity 240 described below, completing the clamping. Since the clamping is naturally completed by gravity, its clamping state is normal. Please refer to Figure 3 When the clamping is not needed, the end of the second clamping end 320 is pulled outward, and the first clamping end 310 is moved toward the inside of the hanging cavity 240 to open the hanging cavity 240.

[0043] Preferably, the width of one end of the first clamping end that is clamped with the clamping groove 211 is greater than the width of the clamping groove 211; the height of the second clamping end 320 is less than the width from the connecting end 210 to the bottom of the receiving end 220. By setting the width, the first clamping end 310 and the second clamping end 320 can complete normal clamping without the phenomenon of clamping displacement. Furthermore, it can also prevent the second clamping end 320 from being clamped with the outer side of the receiving end 220 when the second clamping end 320 is no longer clamped with the outer side of the receiving end 220, the second clamping end 320 will maintain a vertical state due to gravity, and the first clamping end 310 will maintain a fixed angle with the second clamping end 320 at this time. At this time, the hanging cavity 240 is opened and is no longer in an anti-unhooking state, which is prone to falling off. After adopting the clamping groove 211, even if the second clamping end 320 is no longer clamped with the outer side of the receiving end 220, the second clamping end 320 will move downward due to gravity. At this time, the travel of the first clamping end 310 is limited by the clamping groove 211, so that it can no longer move, and it still continues to maintain an anti-unhooking state.

[0044] See also Figure 1, the connecting end 210, the receiving end 220 and the hook tip part 230 are combined to form a hanging cavity 240 inside the hook body 200; the distance between the inner side of the tip part and the connecting end 210 is the receiving object entry width 250. The length of the first clamping end 310 is set to be greater than the receiving object entry width 250. The hinge shaft 330 of the anti-unhooking mechanism is arranged in the hinge hole 120 of the hinge protrusion 110; the anti-unhooking mechanism is connected to the hinge hole 120 through the hinge shaft 330 and rotates based on the hinge hole 120. The first clamping end 310 and the second clamping end 320 are both connected through the end with a narrower width. Preferably, after the first clamping end 310 is clamped with the clamping groove 211, the hanging cavity 240 is set in a closed manner.

[0045] Working principle:

[0046] See also Figure 1 and Figure 3 The anti-unhooking component is rotatably connected to the hook handle 100. The first clamping end 310 and the second clamping end 320 are arranged at a certain angle. The length of the first clamping end 310 is shorter than that of the second clamping end 320, and the weight of the first clamping end 310 is lighter than that of the second clamping end 320. Naturally, the second clamping end 320 droops naturally due to gravity, and the first clamping end 310 naturally tilts up. The position travel of the second clamping end 320 is limited by the outer side of the connecting end 210, resulting in the clamping of the second clamping end 320. After the first connecting end 210 tilts up, it enters the clamping groove 211, and the double restriction is completed by the clamping groove 211 and the angle with the second clamping end 320, and the clamping is completed, so that the hanging cavity 240 is closed. When the clamping is not needed, by pulling the second clamping end 320 outward, the first clamping end 310 is retracted to the inside of the hanging cavity 240, and the hanging cavity 240 is opened, and the unloading can be completed.

[0047] Example 3

[0048] See also Figure 1The embodiment of the utility model provides a crane hoisting anti-unhooking safety device. The crane hoisting anti-unhooking safety device provided by the utility model has the following beneficial effects: the hinged design of the anti-unhooking mechanism and the hook handle 100 enables the anti-unhooking mechanism to operate flexibly, which can not only ensure the stability during the hoisting process, but also maintain a normal working state (i.e., an anti-unhooking state) when encountering unexpected situations, thereby preventing the occurrence of unhooking accidents. This design greatly improves the safety of crane hoisting operations. The two ends of the anti-unhooking mechanism are respectively arranged in contact with the clamping groove 211 on the inner side of the hook tip part 230 and the outer side of the connecting end 210. This design effectively limits the shaking range of the hook during the hoisting process, thereby further preventing the occurrence of unhooking. At the same time, the setting of the clamping groove 211 also makes the connection between the anti-unhooking mechanism and the hook body 200 more firm, thereby enhancing the reliability of the entire device. This anti-unhooking safety device realizes effective control and protection of the hoisting process through reasonable design and structural layout, greatly improves the safety and stability of the operation, and provides a more reliable guarantee for the hoisting operation.

[0049] See also Figure 1 The design of the crane hoisting anti-unhooking safety device is ingenious and practical, which effectively improves the safety of the crane during the hoisting process. Its unique anti-unhooking mechanism design naturally completes the clamping through gravity, so that the clamping state is normal, and no additional operation is required, which greatly simplifies the use steps and improves work efficiency. At the same time, the device also ensures the stability and reliability of the anti-unhooking mechanism during long-term use through the setting of the clamping groove 211. Even after a lot of friction, the anti-unhooking mechanism can always remain in a safe clamping position, effectively preventing the problem of reduced clamping effect due to friction.

[0050] In addition, the device has the advantages of simple structure, easy installation and low maintenance cost. It is made of metal material as a whole, has high strength and durability, and can adapt to various harsh working environments. Through clever structural design and innovative anti-unhooking mechanism, it effectively solves the unhooking problem that may occur during the hoisting process of the crane, improves the safety and reliability of the work, and has broad application prospects and market value.

[0051] It should be noted that although this device has high safety and reliability, in actual use, it is still necessary to operate in accordance with the operating procedures and regularly inspect and maintain the device to ensure that it always remains in good working condition.

[0052] Example 4

[0053] See also Figure 4, the embodiment of the utility model provides a crane hoisting anti-unhooking safety device. Furthermore, when the anti-unhooking safety device in the above embodiment is actually used, since the second clamping end 320 is placed on the back of the above hook body 200 by gravity, it is very labor-saving and convenient for workers to lift it. However, in actual use, when transporting scrap iron, it may be accidentally hooked by the hanging scrap iron, causing it to be lifted. Since the second clamping end 320 is set to droop by gravity, it does not require too much force when lifting. Furthermore, a fastener is also set on the back of the above hook body 200 to prevent the second clamping end 320 from being easily lifted. The fastener includes a fastener seat 410 and a fastener body 420; the fastener body 420 is rotatably connected to the fastener seat 410. A clamping spring (or reset spring) is provided in the fastener seat 410, and the fastener body 420 is buckled on the back of the hook body 200 through the clamping spring. The end of the fastener body 420 is provided with a fastening groove 430 adapted to the second clamping end 320. When the fastener body 420 is fastened to the back of the hook body 200, the fastening groove 430 fastens the second clamping end 320, so that it is further restricted and cannot be lifted at will. Furthermore, the width of the fastener body 200 is relatively narrow, and only one position for applying external force to the second clamping end 320 is required. The width of the end of the second clamping end 320 is set to exceed the width of the fastener body 420. In this way, when the second clamping end 320 needs to be lifted, since the width of the fastener body 200 is narrower than the width of the second clamping end 320, the width of the position where the fastener body 200 applies force to the second clamping end 320 is also relatively narrow. Therefore, it is more labor-saving to lift the position where the fastener body 200 does not apply force to the second clamping end 320. In actual use, there is no possibility that both sides of the second clamping end 320 are accidentally lifted at the same time. Therefore, through such a setting, an extra layer of protection is applied to the second clamping end 320, and it will not be difficult to lift it due to the pressure of the spring when it is lifted. The second clamping end is set wide to change and disperse the position where the force is applied when lifting, so that the position where the force is lifted will not be lifted at the same time by possible scrap metal, reducing the possibility of further accidents.

[0054] Example 5

[0055] See also Figure 5 , the utility model embodiment provides a crane hoisting anti-unhooking safety device. Figure 1, the embodiment of the utility model provides a crane hoisting anti-unhooking safety device. Furthermore, when the anti-unhooking safety device in the above embodiment is actually used, since the second clamping end 320 is placed on the back of the above hook body 200 by gravity, it is very labor-saving and convenient for workers to lift it. However, in this way, in actual use, when transporting scrap iron, it may be accidentally hooked by the hanging scrap iron, causing it to be lifted. Since it is set to sag by gravity, it does not require too much force when lifting. Furthermore, the end of the second clamping end 320 that is clamped with the hook body 200 is also provided with a protrusion, and a weight block 510 is provided in the protrusion, and the weight block 510 is sleeved on the protrusion of the second clamping end 320. The outer surface of the weight block 510 is provided with a rubber 520 that increases its friction, so that it generates a larger friction when it is clamped with the back of the hook body 200. When in use, the weight block 510 increases the force required to lift the second clamping end 320, preventing the second clamping end 320 from being easily lifted by foreign objects. The rubber 520 also increases the friction between the second clamping end 320 and the hook body 200, making the clamping more stable.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A crane hoisting anti-unhooking safety device, characterized in that: It comprises a hook handle (100) and a hook body (200) connected to the hook handle (100); an anti-hooking mechanism is provided at one end of the hook handle (100) connected to the hook body (200); the anti-hooking mechanism is hinged to the hook handle (100); The hook handle (100) is cylindrical; a hinge protrusion (110) is provided at the connection between the hook handle (100) and the hook body (200); the hinge protrusion (110) is provided with a hinge hole (120); the hook handle (100) and the hook body (200) are integrated; The hook body (200) comprises a connecting end (210), a receiving end (220) and a hook tip portion (230); a clamping groove (211) is provided inside the connecting end (210); and two ends of the anti-hook mechanism are respectively arranged in contact with the clamping groove (211) inside the hook tip portion (230) and the outer side of the connecting end (210).

2. A crane hoisting anti-unhooking safety device according to claim 1, characterized in that: The anti-unhooking mechanism comprises a first clamping end (310) and a second clamping end (320); the first clamping end (310) and the second clamping end (320) are connected to each other; and a hinge shaft (330) is provided at the connection between the first clamping end (310) and the second clamping end (320).

3. A crane hoisting anti-unhooking safety device according to claim 2, characterized in that: The cross-sections of the first clamping end (310) and the second clamping end (320) are both arranged in an isosceles trapezoidal shape; the height of the second clamping end (320) is higher than the height of the first clamping end (310).

4. A crane hoisting anti-unhooking safety device according to claim 2, characterized in that: The first clamping end (310) is clamped in cooperation with the clamping groove (211); and the second clamping end (320) is arranged to be clamped in contact with the outer side of the connecting end (210).

5. A crane hoisting anti-unhooking safety device according to claim 2, characterized in that: The width of one end of the first clamping end that cooperates with the clamping groove (211) for clamping is greater than the width of the clamping groove (211); and the height of the second clamping end (320) is less than the width from the connecting end (210) to the bottom of the receiving end (220).

6. A crane hoisting anti-unhooking safety device according to claim 3, characterized in that: The connecting end (210), the receiving end (220) and the hook tip portion (230) are combined to form a hanging cavity (240) inside the hook body (200); the distance between the inner side surface of the tip portion and the connecting end (210) is the receiving object entry width (250).

7. A crane hoisting anti-unhooking safety device according to claim 6, characterized in that: The length of the first clamping end (310) is set to be greater than the width (250) of the receiving object.

8. A crane hoisting anti-unhooking safety device according to claim 2, characterized in that: The hinge shaft (330) of the anti-unhooking mechanism is arranged in the hinge hole (120) of the hinge protrusion (110); the anti-unhooking mechanism is connected to the hinge hole (120) through the hinge shaft (330) and rotates based on the hinge hole (120).

9. A crane hoisting anti-unhooking safety device according to claim 3, characterized in that: The first clamping end (310) and the second clamping end (320) are both connected via the end with a narrower width.

10. A crane hoisting anti-unhooking safety device according to claim 6, characterized in that: After the first clamping end (310) is clamped with the clamping groove (211), the hanging cavity (240) is arranged in a closed manner.

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