Lifting hook capable of prolonging hanging length

Abstract

The utility model provides a lifting hook capable of prolonging hanging length, which comprises a lifting hook body, the lifting hook body comprises a connecting section, a hanging section and a limiting hook section, the hanging section comprises a first hanging part, a second hanging part and a locking piece, the first hanging part is fixedly connected with the connecting section, the second hanging part is fixedly connected with the limiting hook section, and the locking piece is fixedly connected with the limiting hook section. The second hanging part is connected with the first hanging part in a sliding mode so as to adjust the length of the hanging section, and the locking piece is connected with the first hanging part and the second hanging part so that the second hanging part can be locked relative to the first hanging part in a sliding mode. When the number of materials needing to be lifted is large, the lifting hook can lift more materials at a time by prolonging the hanging length of the lifting hook, and then the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly to a hook capable of extending the suspension length. Background Art

[0002] A crane refers to a multi-action hoisting machine that vertically lifts and horizontally transports heavy objects within a certain range. When lifting materials, workers hang the lifting ropes winding the materials on the hook of the crane for lifting. However, for the hooks in the prior art, the length of the suspension part is usually fixed, and only a fixed number of materials can be lifted during use. If the number of materials to be lifted is large, it will take a long time to operate, affecting work efficiency. Summary of the Invention

[0003] The utility model aims to solve the above-mentioned technical problems, and provides a hook capable of extending the suspension length. When the number of materials to be lifted is large, the suspension length of the hook can be extended so that the hook can lift more materials at one time, thereby improving work efficiency.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] A hook capable of extending the suspension length, including a hook body, the hook body includes a connecting section, a suspension section and a limiting hook section, the suspension section includes a first suspension part, a second suspension part and a locking member, the first suspension part is fixedly connected to the connecting section, the second suspension part is fixedly connected to the limiting hook section, the second suspension part is slidably connected to the first suspension part to adjust the length of the suspension section, and the locking member connects the first suspension part and the second suspension part, so that the second suspension part can be slidably locked relative to the first suspension part.

[0006] Further, a chute is recessed on the end face of the first suspension part facing the second suspension part, a through hole is provided on the first suspension part, and the through hole communicates with the chute; the second suspension part is a slide bar, and a plurality of sockets are provided on the second suspension part at intervals, and the plurality of sockets are arranged at intervals along the length direction of the second suspension part; the second suspension part is slidably inserted into the chute, and the locking member is detachably inserted into the through hole and one of the sockets.

[0007] Further, the locking member is a bolt, and the locking member includes a bolt head and a pin shaft fixed on one end face of the bolt head, and the pin shaft is inserted into the through hole and one of the sockets.

[0008] Further, a receiving groove is recessed in the outer peripheral wall of the first hanging portion. The receiving groove is disposed around the top periphery of the through hole. When the pin shaft is inserted into the through hole and one of the insertion openings, the pin head is received in the receiving groove.

[0009] Further, the hanging section is horizontally disposed. The limiting hook section includes a fixed hook portion and a movable hook portion. One end of the fixed hook portion is fixedly connected to the second hanging portion, and the fixed hook portion extends upward and bends from the second hanging portion; one end of the movable hook portion is rotatably connected to the end of the fixed hook portion away from the second hanging portion, and the other end of the movable hook portion bends and extends toward the connecting section.

[0010] Further, a rotating groove is provided at the end of the fixed hook portion away from the second hanging portion. A rotating shaft protrudes from one end of the movable hook portion. The rotating shaft is rotatably inserted into the rotating groove so that the movable hook portion can rotate between an anti - detachment position and an open position: when the movable hook portion is in the anti - detachment position, the movable hook portion blocks between the fixed hook portion and the connecting section; when the movable hook portion is in the open position, the movable hook portion is located on the side of the fixed hook portion facing away from the connecting section.

[0011] Further, a positioning groove is recessed in the outer peripheral wall of the rotating shaft; the limiting hook section further includes a positioning component. The positioning component includes a fixed seat, a positioning pin and an elastic member. The fixed seat is fixedly connected to the fixed hook portion. The positioning pin slidably passes through the fixed seat and the fixed hook portion so that one end of the positioning pin is located in the rotating groove; opposite ends of the elastic member are respectively connected to the fixed seat and the positioning pin. The elastic force of the elastic member enables the end of the positioning pin located in the rotating groove to be inserted into the positioning groove to position the movable hook portion in the anti - detachment position.

[0012] Further, the hook capable of extending the hanging length includes two hook bodies which are symmetrically arranged. The hook capable of extending the hanging length further includes a mounting seat. The connecting section of the hook body and the mounting seat are detachably connected together by a connecting member.

[0013] Further, a connecting hole is provided at the free end of the connecting section. Two slots and a mounting hole are provided on the mounting seat. The two slots are recessed in the side surface of the mounting seat facing the hook body. The mounting hole penetrates through the mounting seat and communicates with the two slots; the free ends of the connecting sections of the two hook bodies are respectively inserted into the two slots. The connecting member passes through the mounting hole and the connecting holes of the two connecting sections to detachably connect the hook body and the mounting seat together.

[0014] Further, a chute is recessed in the end face of the second suspension part facing the first suspension part. A through hole is provided on the second suspension part, and the through hole communicates with the chute. The first suspension part is a sliding rod, and a plurality of sockets are provided on the first suspension part at intervals. The plurality of sockets are arranged at intervals along the length direction of the first suspension part. The first suspension part is slidably inserted into the chute, and the locking member is detachably inserted into the through hole and one of the sockets.

[0015] Due to the above technical solutions, the present utility model has the following beneficial effects:

[0016] 1. Since the hook capable of extending the suspension length has a suspension section including a first suspension part and a second suspension part that are slidably connected, when the number of materials to be lifted is large, the length of the suspension section can be extended by the relative sliding of the first suspension part and the second suspension part, so that the suspension section of the hook can suspend more materials according to requirements, thereby improving work efficiency.

[0017] 2. The hook capable of extending the suspension length can prevent the suspended material from detaching from the hook body by providing a rotatably connected movable hook part. During the process of suspending the material, the movable hook part can be rotated to the side of the fixed hook part facing away from the connecting section, which can prevent the movable hook part from blocking the material from entering the hook body when suspending the material and will not hinder the suspension action, improving convenience. By providing a positioning component, the movable hook part can be positioned at the anti - detachment position to prevent the movable hook part from accidentally rotating and destroying the anti - detachment function.

[0018] 3. The hook capable of extending the suspension length has a detachable connection between the hook body and the mounting seat, making transportation and carrying more convenient. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a hook capable of extending the suspension length according to a preferred embodiment of the present utility model;

[0020] Figure 2 is Figure 1 an enlarged structural view at A;

[0021] Figure 3 is Figure 1 an enlarged structural view at B;

[0022] In the attached drawings, 10 is a mounting base; 11 is a slot; 12 is a mounting hole; 20 is a hook body; 21 is a connecting section; 211 is a connecting hole; 23 is a hanging section; 231 is a first hanging portion; 2311 is a sliding groove; 2312 is a through hole; 2313 is a receiving groove; 232 is a second hanging portion; 2321 is a socket; 233 is a locking member; 2331 is a plug head; 2332 is a pin shaft; 25 is a limiting hook section; 251 is a fixed hook portion; 2511 is a rotating groove; 2512 is a convex ring; 2513 is a communication channel; 253 is a movable hook portion; 2531 is a rotating shaft; 2532 is a limiting groove; 2534 is a positioning groove; 30 is a connecting member; 31 is a connecting rod; 311 is a limiting flange; 312 is a clamping hole; 32 is a clamping pin; 40 is a positioning assembly; 41 is a fixed seat; 411 is a receiving cavity; 413 is a guiding channel; 42 is a positioning pin; 421 is a connecting flange; 43 is an elastic member. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] Please refer to Figure 1, a hook capable of extending the suspension length provided by a preferred embodiment of the present utility model is used to be installed on a crane (not shown in the figure) to suspend the material to be hoisted. The hook of this embodiment is a double hook, which includes a mounting seat 10 and two hook bodies 20. The two hook bodies 20 are symmetrically arranged, and the hook body 20 and the mounting seat 10 are detachably connected together through a connecting member 30.

[0027] The mounting seat 10 is used to connect the crane. Two slots 11 and a mounting hole 12 are provided on the mounting seat 10. The two slots 11 are recessed at intervals on the side of the mounting seat 10 facing the hook body 20; the mounting hole 12 penetrates through the opposite sides of the mounting seat 10 and communicates with both slots 11. The connection method between the mounting seat 10 and the crane belongs to the prior art. To save space, it will not be elaborated here.

[0028] The hook body 20 includes a connecting section 21, a suspension section 23 and a limiting hook section 25 connected in sequence. In this embodiment, the connecting section 21 is generally rod-shaped. The connecting section 21 and the mounting seat 10 are detachably connected together through a connecting member 30. Specifically, a connecting hole 211 is provided at the free end of the connecting section 21. One ends of the connecting sections 21 of the two hook bodies 20 are respectively inserted into the two slots 11. The connecting member 30 passes through the mounting hole 12 and the connecting holes 211 of the two connecting sections 21 to detachably connect the hook body 20 and the mounting seat 10 together. In this embodiment, the connecting member 30 includes a connecting rod 31 and a pin 32. A limiting flange 311 is provided at one end of the connecting rod 31, and the outer diameter of the limiting flange 311 is larger than the aperture of the mounting hole 12; a clamping hole 312 is provided at the other end of the connecting rod 31, and the pin 32 is inserted into the clamping hole 312. In this embodiment, the diameter of the end of the connecting rod 31 provided with the clamping hole 312 is smaller than the aperture of the mounting hole 12 to facilitate the insertion of the connecting rod 31 into the mounting hole 12. When the hook body 20 is installed, the connecting rod 31 is passed through the mounting hole 12 and the connecting holes 211 of the two connecting sections 21, and then the pin 32 is inserted into the clamping hole 312, so that the limiting flange 311 and the pin 32 are respectively located at the opposite ends of the mounting hole 12. Thus, the cooperation between the limiting flange 311 and the pin 32 can prevent the connecting member 30 from detaching from the mounting seat 10. The cooperation between the connecting rod 31 and the pin 32 is conducive to the installation and disassembly of the hook body 20. And in this embodiment, the pin 32 and the clamping hole 312 are in interference fit, further ensuring the stable installation of the hook body 20 and the mounting seat 10.

[0029] Please refer to Figure 2, the hanging section 23 is horizontally arranged to facilitate hanging materials. The hanging section 23 includes a first hanging part 231, a second hanging part 232 and a locking member 233. The first hanging part 231 is fixedly connected to the connecting section 21, the second hanging part 232 is fixedly connected to the limiting hook section 25, and the second hanging part 232 is slidably connected to the first hanging part 231 to adjust the length of the hanging section 23. The locking member 233 connects the first hanging part 231 and the second hanging part 232, so that the second hanging part 232 can be slidably locked relative to the first hanging part 231.

[0030] Specifically, in this embodiment, the first hanging part 231 is fixedly connected to the end of the connecting section 21 away from the connecting hole 211. A chute 2311 is recessed on the end face of the first hanging part 231 facing the second hanging part 232, and the chute 2311 extends along the length direction of the hanging section 23; a through hole 2312 is provided on the first hanging part 231, and the through hole 2312 communicates with the chute 2311. The second hanging part 232 is a slide bar fixedly connected to one end of the limiting hook section 25, and a plurality of sockets 2321 are provided at intervals on the second hanging part 232, and the plurality of sockets 2321 are arranged at intervals along the length direction of the second hanging part 232. The second hanging part 232 is slidably inserted into the chute 2311, and the locking member 233 is detachably inserted into the through hole 2312 and one of the sockets 2321, so that the second hanging part 232 can be slidably locked relative to the first hanging part 231. In this embodiment, the locking member 233 is a bolt, and the locking member 233 includes a bolt head 2331 and a pin shaft 2332 fixed on one end face of the bolt head 2331, and the pin shaft 2332 is inserted into the through hole 2312 and one of the sockets 2321. In this embodiment, the pin shaft 2332 and the through hole 2312 and the socket 2321 are in interference fit to improve the stability after installation, enhance the reliability of the connection, and prevent the limiting hook section 25 from falling off due to insufficient fixation between the first hanging part 231 and the second hanging part 232.

[0031] A receiving groove 2313 is further recessed on the outer peripheral wall of the first hanging part 231, and the receiving groove 2313 is arranged around the top periphery of the through hole 2312. When the pin shaft 2332 is inserted into the through hole 2312 and one of the sockets 2321, the bolt head 2331 is received in the receiving groove 2313. The outer diameter of the bolt head 2331 is larger than the aperture of the through hole 2312, and the bolt head 2331 is arranged to prevent the locking member 233 from falling out of the through hole 2312. Also, since the bolt head 2331 is received in the receiving groove 2313, when the locking member 233 is inserted into the through hole 2312, the outer surface of the hanging section 23 can be made flat, which is more conducive to hanging materials.

[0032] The limiting hook section 25 is used to limit the materials suspended on the suspension section 23 to prevent them from detaching from the hook body 20. In this embodiment, the limiting hook section 25 includes a fixed hook portion 251 and a movable hook portion 253. One end of the fixed hook portion 251 is fixedly connected to the second suspension portion 232, and the fixed hook portion 251 extends upwardly and bends from the second suspension portion 232. One end of the movable hook portion 253 is rotatably connected to the end of the fixed hook portion 251 far from the second suspension portion 232, and the other end of the movable hook portion 253 extends in a direction towards the connecting section 21. Please refer to Figure 3 , in this embodiment, a rotating groove 2511 is provided at the end of the fixed hook portion 251 far from the second suspension portion 232. A rotating shaft 2531 protrudes from one end of the movable hook portion 253, and the rotating shaft 2531 is rotatably inserted into the rotating groove 2511 so that the movable hook portion 253 can rotate between an anti-detachment position and an open position: when the movable hook portion 253 is in the anti-detachment position, the movable hook portion 253 is blocked between the fixed hook portion 251 and the connecting section 21, thereby preventing the material from detaching from the hook body 20; when the movable hook portion 253 is in the open position, the movable hook portion 253 is located on the side of the fixed hook portion 251 facing away from the connecting section 21, so that the distance between the fixed hook portion 251 and the connecting section 21 becomes larger, thus facilitating the entry of the material into the hook body 20 during hoisting. In this embodiment, an annular limiting groove 2532 is further recessed on the outer peripheral wall of the rotating shaft 2531; a convex ring 2512 is further fixed on the inner wall of the rotating groove 2511, and the convex ring 2512 is slidably inserted into the limiting groove 2532 to prevent the movable hook portion 253 from separating from the fixed hook portion 251. A positioning groove 2534 is further recessed on the outer peripheral wall of the rotating shaft 2531, and the positioning groove 2534 is spaced from the limiting groove 2532.

[0033] The limiting hook section 25 further includes a positioning component 40, and the positioning component 40 is used to lock the movable hook portion 253 at the anti - detachment position. In this embodiment, the positioning component 40 includes a fixed seat 41, a positioning pin 42, and an elastic member 43. The fixed seat 41 is fixedly connected to the fixed hook portion 251. In this embodiment, the fixed seat 41 is fixedly connected to one end of the fixed hook portion 251 close to the movable hook portion 253. The fixed seat 41 is provided with a receiving cavity 411 and a guiding channel 413. The guiding channel 413 penetrates through opposite sides of the fixed seat 41 and communicates with the receiving cavity 411. The positioning pin 42 slidably penetrates through the fixed seat 41 and the fixed hook portion 251 so that one end of the positioning pin 42 is located in the rotation groove 2511. Specifically, in this embodiment, the fixed hook portion 251 is provided with a communicating channel 2513 corresponding to the guiding channel 413. The communicating channel 2513 communicates with the guiding channel 413 and is on the same straight line. The positioning pin 42 sequentially penetrates through the guiding channel 413, the receiving cavity 411, and the communicating channel 2513, and one end of the positioning pin 42 is outside the fixed seat 41 and the other end is located in the rotation groove 2511. A connecting flange 421 protrudes from the outer peripheral wall of the positioning pin 42, and the length of the connecting flange 421 is less than the length of the receiving cavity 411. The connecting flange 421 is slidably received in the receiving cavity 411. The sliding fit between the connecting flange 421 and the receiving cavity 411 can also guide the movement of the positioning pin 42, making the movement of the positioning pin 42 smoother. In this embodiment, the elastic member 43 is a spring. The elastic member 43 is received in the receiving cavity 411 of the fixed seat 41, and opposite ends of the elastic member 43 are respectively connected to the fixed seat 41 and the connecting flange 421 of the positioning pin 42.

[0034] When the movable hook portion 253 rotates to the anti - detachment position, the positioning groove 2534 on the rotating shaft 2531 is aligned with the guiding channel 413 and the communicating channel 2513. The elastic member 43 is in a compressed state, and the elastic restoring force of the elastic member 43 drives the positioning pin 42 to move towards the positioning groove 2534 until one end of the positioning pin 42 located in the rotation groove 2511 is inserted into the positioning groove 2534, thereby locking the movable hook portion 253 and further positioning the movable hook portion 253 at the anti - detachment position.

[0035] When it is necessary to place the material on the hook body 20, pull the end of the positioning pin 42 outside the fixed seat 41 in the direction away from the fixed hook portion 251. During this process, the positioning pin 42 drives the connecting flange 421 to slide along the receiving cavity 411 and compresses the elastic member 43 through the connecting flange 421 until the positioning pin 42 disengages from the positioning groove 2534, and then the movable hook portion 253 can be rotated towards the open position. During this process, the outer peripheral wall of the rotating shaft 2531 abuts against the elastic member 43, so that the elastic member 43 remains in a compressed state. When the movable hook portion 253 is rotated again to the anti-disengagement position, the elastic restoring force of the elastic member 43 can drive the positioning pin 42 to move towards the direction close to the positioning groove 2534 until the end of the positioning pin 42 located in the rotating groove 2511 is inserted into the positioning groove 2534.

[0036] When using the hook capable of extending the suspension length, rotate the movable hook portion 253 to the open position, hang the lifting rope for the material to be suspended on the suspension section 23. Subsequently, rotate the movable hook portion 253 to the anti-disengagement position. At this time, the positioning groove 2534 is aligned with the guiding channel 413 and the communicating channel 2513, and the elastic member 43 restores its elastic deformation so that the positioning pin 42 is inserted into the positioning groove 2534 to lock the movable hook portion 253, and then the lifting can be started. After the lifting is completed, pull the positioning pin 42 in the direction away from the fixed hook portion 251 until the positioning pin 42 disengages from the positioning groove 2534. Subsequently, rotate the movable hook portion 253 to the open position, take out the suspended material from the hook body 20, and finally rotate the movable hook portion 253 to the anti-disengagement position.

[0037] When the number of materials to be lifted is large and the suspension length needs to be extended, use a tool to knock out the locking member 233 so that the locking member 233 disengages from the socket 2321 and the through hole 2312 in sequence, pull the limiting hook section 25, and pull the second suspension section 232 out of the sliding groove 2311 of the first suspension section 231 to a preset distance. Subsequently, use a tool to insert the locking member 233 into the through hole 2312 and a corresponding socket 2321 again to complete the extension of the suspension length.

[0038] When it is necessary to disassemble the hook for transportation, use a tool to knock out the locking member 233 from the suspension section 23 so that the locking member 233 disengages from the socket 2321 and the through hole 2312 in sequence. Subsequently, completely disengage the second suspension section 232 from the first suspension section 231 to complete the disassembly of the limiting hook section 25; use a tool to knock out the pin 32 from the connecting rod 31, then pull out the connecting rod 31 from the mounting seat 10, and then take out the connecting section 21 from the slot 11 to complete the disassembly of the hook.

[0039] Due to the above-mentioned hook capable of extending the suspension length, its suspension section 23 includes a first suspension part 231 and a second suspension part 232 that are slidably connected. Therefore, when the quantity of materials to be lifted is large, the length of the suspension section 23 can be extended and adjusted by the relative sliding of the first suspension part 231 and the second suspension part 232, so that the suspension section 23 of the hook can suspend more materials according to requirements, thereby improving work efficiency.

[0040] For the above-mentioned hook capable of extending the suspension length, by providing a movable hook part 253 connected in a rotatable manner, it can prevent the suspended materials from detaching from the hook body 20; during the process of suspending materials, the movable hook part 253 can be rotated to the side of the fixed hook part 251 facing away from the connecting section 21, which can prevent the movable hook part 253 from blocking the materials from entering the hook body 20 when suspending materials, without causing an obstruction to the suspension action and improving convenience; by providing a positioning component 40, the movable hook part 253 can be positioned at the anti-detachment position to prevent the movable hook part 253 from accidentally rotating and destroying the anti-detachment function.

[0041] For the above-mentioned hook capable of extending the suspension length, the hook body 20 and the mounting seat 10 are detachable, making transportation and carrying more convenient.

[0042] It can be understood that the sliding connection manner between the first suspension part 231 and the second suspension part 232 is not limited to this embodiment. For example, in another embodiment, a chute 2311 can be recessed in the end face of the second suspension part 232 facing the first suspension part 231, and a through hole 2312 is provided on the outer peripheral wall of the second suspension part 232, and the through hole 2312 communicates with the chute 2311; the first suspension part 231 is a slide bar fixedly connected to one end of the connecting section 21, and a plurality of sockets 2321 are provided at intervals on the first suspension part 231, and the plurality of sockets 2321 are arranged at intervals along the length direction of the first suspension part 231; the first suspension part 231 is slidably inserted into the chute 2311, and the locking member 233 is detachably inserted into the through hole 2312 and one of the sockets 2321.

[0043] It can be understood that the number of hook bodies 20 is not limited to this embodiment. For example, in other embodiments, one or more than two hook bodies 20 can also be provided.

[0044] The above description is a detailed description of the preferred and feasible embodiment of the present invention, but the embodiment is not intended to limit the patent application scope of the present invention. Any equivalent changes or modifications completed under the technical spirit disclosed by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A hook capable of extending the hanging length, comprising a hook body, characterized in that: The hook body includes a connecting section, a hanging section and a limiting hook section, the hanging section includes a first hanging part, a second hanging part and a locking piece, the first hanging part is fixedly connected to the connecting section, the second hanging part is fixedly connected to the limiting hook section, the second hanging part is slidably connected to the first hanging part to adjust the length of the hanging section, and the locking piece connects the first hanging part and the second hanging part, so that the second hanging part can be slidably locked relative to the first hanging part.

2. The hook capable of extending the hanging length as claimed in claim 1, characterized in that: A slide groove is recessed on the end surface of the first hanging part facing the second hanging part, and a through hole is provided on the first hanging part, and the through hole is connected to the slide groove; the second hanging part is a sliding rod, and a plurality of sockets are provided on the second hanging part at intervals, and the plurality of sockets are arranged at intervals along the length direction of the second hanging part, and the second hanging part is slidably inserted in the slide groove; the locking piece is detachably inserted in the through hole and one of the sockets.

3. The hook capable of extending the hanging length as claimed in claim 2, characterized in that: The locking member is a latch pin, which includes a latch pin head and a pin shaft fixed on an end surface of the latch pin head, and the pin shaft is inserted into the through hole and one of the sockets.

4. The hook capable of extending the hanging length as claimed in claim 3, characterized in that: A receiving groove is also recessed on the outer peripheral wall of the first suspension portion, and the receiving groove is arranged around the top peripheral edge of the through hole. When the pin shaft is inserted into the through hole and one of the sockets, the pin head is accommodated in the receiving groove.

5. The hook capable of extending the hanging length as claimed in claim 1, characterized in that: The hanging section is arranged horizontally, and the limiting hook section includes a fixed hook portion and a movable hook portion, one end of the fixed hook portion is fixedly connected to the second hanging portion, and the fixed hook portion is bent and extended upward from the second hanging portion; one end of the movable hook portion is rotationally connected to an end of the fixed hook portion away from the second hanging portion, and the other end of the movable hook portion is bent and extended in a direction close to the connecting section.

6. The hook capable of extending the hanging length as claimed in claim 5, characterized in that: A rotation groove is provided on the end of the fixed hook portion away from the second hanging portion, and a rotation shaft is protruded from one end of the movable hook portion. The rotation shaft is rotatably inserted into the rotation groove so that the movable hook portion can rotate between an anti-slip position and an open position: when the movable hook portion is located at the anti-slip position, the movable hook portion is blocked between the fixed hook portion and the connecting section; when the movable hook portion is located at the open position, the movable hook portion is located on the side of the fixed hook portion facing away from the connecting section.

7. The hook capable of extending the hanging length as claimed in claim 6, characterized in that: A positioning groove is recessed on the outer peripheral wall of the rotating shaft; the limiting hook section also includes a positioning assembly, which includes a fixed seat, a positioning pin and an elastic member, the fixed seat is fixedly connected to the fixed hook portion, and the positioning pin is slidably penetrated through the fixed seat and the fixed hook portion so that one end of the positioning pin is located in the rotating groove; the opposite two ends of the elastic member are respectively connected to the fixed seat and the positioning pin, and the elastic force of the elastic member enables the end of the positioning pin located in the rotating groove to be inserted into the positioning groove, so as to position the movable hook portion in the anti-slip position.

8. The hook capable of extending the hanging length as claimed in claim 1, characterized in that: The hook capable of extending the hanging length comprises two hook bodies, which are symmetrically arranged. The hook capable of extending the hanging length also comprises a mounting seat, and the connecting section of the hook body is detachably connected to the mounting seat through a connecting piece.

9. The hook capable of extending the hanging length as claimed in claim 8, characterized in that: A connecting hole is provided at the free end of the connecting section, and two slots and a mounting hole are provided on the mounting seat. The two slots are recessed on the side of the mounting seat facing the hook body, and the mounting hole passes through the mounting seat and is connected with the two slots; the free ends of the connecting sections of the two hook bodies are respectively inserted into the two slots, and the connecting piece passes through the mounting hole and the connecting holes of the two connecting sections to detachably connect the hook body and the mounting seat together.

10. The hook capable of extending the hanging length as claimed in claim 1, characterized in that: A slide groove is recessed on the end surface of the second hanging part facing the first hanging part, and a through hole is provided on the second hanging part, and the through hole is connected to the slide groove; the first hanging part is a sliding rod, and a plurality of sockets are provided on the first hanging part at intervals, and the plurality of sockets are arranged at intervals along the length direction of the first hanging part; the first hanging part is slidably inserted in the slide groove; the locking piece is detachably inserted in the through hole and one of the sockets.

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