Rotary lifting hook for loading pull arm

Abstract

The utility model relates to the technical field of pull arm hooks, in particular to a rotary lifting hook for pull arm mounting, which comprises a pull arm body, a lifting hook is rotatably mounted on the pull arm body, a first clamping groove is formed in the lifting hook, an extension rod is formed on the lifting hook, and a second clamping groove is formed in one end, far away from the first clamping groove, of the extension rod; a positioning assembly is arranged on the pull arm body and is used for positioning the lifting hook. The lifting hook can adapt to garbage cans of different specifications, and the universality of the lifting hook is improved.

Description

Technical Field

[0001] The present application relates to the technical field of hook lifts, and in particular to a rotary hook for mounting on a hook lift. Background Art

[0002] At present, hooklift equipment is widely used in special vehicles with detachable car bodies. It has the advantages of convenient replacement of car bodies and easy dumping, and greatly reduces labor intensity during loading and unloading, significantly improving working conditions. With the development of science and technology and the progress of society, the demand for hooklifts has increased year by year, and its application scope has also become larger and larger. The hooklift chassis refers to the part where the bottom of the hooklift is connected to the car body, which mainly serves to fix the hooklift and make it work stably.

[0003] The existing Chinese patent with publication number CN208103711U discloses a replaceable hook mounted on a pulling arm, comprising: a hook arm having a groove structure; a hook support having a protrusion structure at the bottom, the protrusion structure and the groove structure being matched and fixed to each other; two first axial holes are also provided on the hook support; a hook is provided with two second axial holes, the lower end of the hook is inserted into the hook support, the first axial hole and the second axial hole are matched with each other; the first axial hole and the second axial hole are respectively penetrated and fixed by a short pin and a long pin.

[0004] The hook arm type self-loading and unloading device is a special working device that can be installed on a stereotyped automobile chassis. It realizes the functions of pulling, unloading, lifting, etc. of the work object through the rotation of the hook arm combined with its sliding or swinging.

[0005] With regard to the above-mentioned related technologies, the garbage bins of detachable garbage trucks on the market are usually produced by multiple companies in different models and specifications, and the corresponding box hook ring heights also have different specifications. If the pulling arm is required to be used in conjunction with the box, it is necessary to configure pulling arms with different hook heights for replacement, which affects the versatility of the product. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a rotary hook for mounting on a pulling arm, which solves the technical problem that different models and specifications of garbage bins need to be replaced with hooks of different specifications, resulting in reduced product versatility.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A rotary hook for a pull-arm upper-mounted device, comprising a pull-arm body, a hook is rotatably installed on the pull-arm body, a first clamping groove is formed on the hook, an extension rod is formed on the hook, and a second clamping groove is formed at one end of the extension rod away from the first clamping groove; a positioning component is arranged on the pull-arm body, and the positioning component is used to position the hook.

[0009] Through the above technical solution, the hook is rotatably installed on the pull-arm body, and the positioning component positions the hook. When hoisting the garbage bin of the garbage truck, the first clamping groove of the hook is clamped with the garbage bin. When hoisting different models of garbage bins, the hook is rotated, and the second clamping groove on the hook is used to hoist another garbage bin, so that a hook can adapt to different specifications of garbage bins, improving the versatility of the hook.

[0010] Furthermore, a positioning hole is formed on the hook, the positioning hole corresponds to the first clamping groove and the second clamping groove, and the positioning component includes a positioning pin shaft, and the positioning pin shaft is inserted and matched with the positioning hole.

[0011] Through the above technical solution, after the hook rotates to the designated position, the positioning pin shaft passes through the positioning hole on the hook, so that the hook can be stabilized on the pull-arm body and prevent the hook from rotating during the hoisting process.

[0012] Furthermore, a first sunk groove is formed on one side of the hook close to the first clamping groove, the first sunk groove extends towards the inner side of the pull-arm body, a second sunk groove is formed on one side of the hook close to the second clamping groove, and the second sunk groove extends towards the inner side of the hook body.

[0013] Through the above technical solution, when the hook hoists the garbage bin, the first sunk groove and the second sunk groove on the first clamping groove and the second clamping groove can improve the stability of the connection between the hook and the garbage bin and prevent the garbage bin from slipping during the hoisting process.

[0014] Furthermore, a rotating groove is formed on the pull-arm body, the hook is embedded in the rotating groove, a rotating shaft is arranged in the middle of the hook, and both ends of the rotating shaft are arranged on the pull-arm body.

[0015] Through the above technical solution, the hook is rotatably installed on the rotating groove of the pull-arm body through the rotating shaft, thus saving the installation space of the hook.

[0016] Furthermore, a handle is arranged on the positioning pin shaft, and the handle is fixed at one end of the positioning pin shaft.

[0017] Through the above technical solution, the staff realizes the insertion and extraction of the positioning pin shaft through the handle, improving the convenience of the insertion and extraction of the positioning pin shaft.

[0018] Further, a pull plate is provided at one end of the positioning pin shaft. The pull plate is connected to the positioning pin shaft, and a pull ring is installed on the pull plate. A tension spring is provided between the pull plate and the pull arm body, and the tension spring connects the pull plate and the pull arm body.

[0019] Through the above technical solution, the staff pulls the pull ring to drive the positioning pin shaft to separate from the hook. At this time, the tension spring is in a stretched state. When the positioning hole on the hanging plate corresponds to the positioning pin shaft, the pull ring is released, and the pull plate and the positioning pin shaft are inserted and matched with the positioning hole on the hook under the action of the tension spring.

[0020] Further, a guiding inclined surface is formed on one side of the hook close to the pull plate, and the guiding inclined surface inclines towards the inner side of the positioning hole.

[0021] Through the above technical solution, the guiding inclined surface guides the positioning pin shaft, improving the convenience of inserting the positioning pin shaft into the positioning hole.

[0022] In summary, the present application includes at least one of the following beneficial technical effects of the rotary hook installed on the pull arm:

[0023] 1. The hook is rotatably installed on the pull arm body, and the positioning component positions the hook. When hoisting the garbage bin of the garbage truck, the first card slot of the hook is clamped with the garbage bin. When hoisting garbage bins of different models, the hook is rotated, and the second card slot on the hook hoists another garbage bin, so that one hook can adapt to garbage bins of different specifications, improving the versatility of the hook;

[0024] 2. Through the insertion and matching of the positioning pin shaft and the positioning hole, as well as the first sinking groove and the second sinking groove on the first card slot and the second card slot, the stability of the hook when hoisting the garbage bin is improved;

[0025] 3. Through the arrangement of the tension spring and the guiding inclined surface, the convenience of inserting and matching the positioning pin shaft and the hook is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of a rotary hook installed on a pull arm mainly provided in Embodiment 1;

[0027] Figure 2 is an exploded schematic diagram of the hook structure mainly provided in Embodiment 1;

[0028] Figure 3 is a schematic diagram of the hook structure mainly provided in Embodiment 1;

[0029] Figure 4 is a schematic diagram of the pull plate structure mainly provided in Embodiment 2.

[0030] Reference signs: 1, pull arm body; 11, rotating groove; 2, hook; 21, first card slot; 211, first sinking groove; 22, second card slot; 221, second sinking groove; 23, rotating shaft; 24, extension rod; 25, positioning hole; 3, positioning component; 31, positioning pin; 311, handle; 32, pull plate; 321, pull ring; 322, tension spring; 33, guiding inclined plane. Detailed implementation mode

[0031] In order to understand the technical means, creative features, achieved purposes and effects of the present utility model easily, the present utility model will be further described below in conjunction with specific embodiments.

[0032] The following combines the attached Figures 1-4 This application will be further described in detail.

[0033] Embodiment 1

[0034] Refer to Figures 1-2 , a rotary hook 2 is installed on a pull arm, which includes a pull arm body 1. A hook 2 is arranged on the pull arm body 1. The hook 2 is rotatably installed on the pull arm body 1. A first card slot 21 and a second card slot 22 are formed on the hook 2. The hook 2 hoists a garbage bin through the first card slot 21 and the second card slot 22. A positioning component 3 is arranged on the pull arm body 1, and the positioning component 3 positions the hook 2.

[0035] Refer to Figure 3 , the pull arm body 1 is L-shaped. A rotating groove 11 is formed at one end of the L-shaped pull arm body 1. The hook 2 is integrally in the shape of a rectangular plate. A rotating shaft 23 is arranged in the middle of the hook 2 in the length direction. Both ends of the rotating shaft 23 penetrate through the pull arm body 1, and the hook 2 rotates on the pull arm body 1 through the rotating shaft 23. When the first card slot 21 of the hook 2 is in use, the second card slot 22 is embedded in the rotating groove 11 of the pull arm body 1. When the second card slot 22 of the hook 2 is in use, the first card slot 21 is embedded in the rotating groove 11 of the pull arm body 1.

[0036] The first card slot 21 and the second card slot 22 are respectively formed at both ends of the hook 2 in the length direction. An extension rod 24 is formed between the second card slot 22 and the hook 2. The extension rod 24 and the hook 2 are integrally formed. During use, the distance between the second card slot 22 and the rotating shaft 23 of the hook 2 is extended through the extension rod 24, so that the hook 2 can be applicable to different models.

[0037] In order to improve the hoisting effect of the lifting arm body 1 on the garbage bin, first sinking grooves 211 and second sinking grooves 221 are respectively formed on one side of the lifting arm body 1 close to the first clamping groove 21 and the second clamping groove 22. Both the first sinking groove 211 and the second sinking groove 221 extend towards the inner side of the lifting arm body 1. During use, the first sinking groove 211 and the second sinking groove 221 on the first clamping groove 21 and the second clamping groove 22 position the garbage bin, thereby preventing the garbage bin from slipping out of the first clamping groove 21 and the second clamping groove 22 of the lifting hook 2.

[0038] In order to improve the stability of the lifting hook 2 during use, positioning holes 25 are provided on the lifting hook 2. Two positioning holes 25 are spaced apart on the lifting hook 2, and the two positioning holes 25 correspond to the first clamping groove 21 and the second clamping groove 22 respectively. The positioning assembly 3 will include a positioning pin shaft 31. The positioning pin shaft 31 is inserted through the lifting arm body 1. When the lifting hook 2 rotates to a specified position, the positioning pin shaft 31 passes through one of the positioning holes 25, so that the lifting hook 2 can be positioned on the lifting arm body 1.

[0039] Furthermore, a handle 311 is provided on the positioning pin shaft 31, and the handle 311 is integrally formed with the positioning pin shaft 31. During use, the positioning pin shaft 31 is disassembled and installed through the handle 311, thereby improving the convenience of rotating the lifting hook 2.

[0040] Embodiment 2

[0041] Refer to Figure 4 , a pulling plate 32 is provided at one end of the positioning pin shaft 31, and the pulling plate 32 is integrally formed with the positioning pin shaft 31. A pulling ring 321 is provided on the pulling plate 32, and the pulling ring 321 is installed on the pulling plate 32. Furthermore, a tension spring 322 is provided between the pulling plate 32 and the lifting arm body 1, and both ends of the tension spring 322 are connected to the lifting arm body 1 and the pulling plate 32 respectively. When it is necessary to rotate the lifting hook 2, the positioning pin shaft 31 is pulled out through the pulling ring 321. At this time, the tension spring 322 is in a stretched state. When the pulling ring 321 is released, the tension spring 322 pulls the positioning pin shaft 31 tightly on the lifting arm body 1.

[0042] In order to enable the positioning pin shaft 31 to penetrate into the positioning hole 25, a guiding inclined surface 33 is formed on one side of the lifting hook 2 close to the pulling plate 32, and the guiding inclined surface 33 inclines towards the inner side of the positioning hole 25. The guiding inclined surface 33 guides the positioning pin shaft 31, thereby improving the convenience of the positioning pin shaft 31 penetrating into the lifting hook 2.

[0043] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A rotary hook for mounting on a pulling arm, comprising a pulling arm body (1), characterized in that: A hook (2) is rotatably mounted on the pulling arm body (1), a first slot (21) is provided on the hook (2), an extension rod (24) is formed on the hook (2), a second slot (22) is provided at one end of the extension rod (24) away from the first slot (21); a positioning assembly (3) is provided on the pulling arm body (1), and the positioning assembly (3) is used to position the hook (2).

2. A swivel hook for mounting on a pull arm according to claim 1, characterized in that: The hook (2) is provided with a positioning hole (25), the positioning hole (25) corresponds to the first clamping slot (21) and the second clamping slot (22), and the positioning assembly (3) comprises a positioning pin shaft (31), and the positioning pin shaft (31) is plug-fitted with the positioning hole (25).

3. The rotary hook for mounting on a pulling arm according to claim 1, characterized in that: A first recessed groove (211) is formed on a side of the hook (2) close to the first slot (21), and the first recessed groove (211) extends toward the inner side of the arm body (1); a second recessed groove (221) is formed on a side of the hook (2) close to the second slot (22), and the second recessed groove (221) extends toward the inner side of the hook (2) body.

4. The rotary hook for mounting on a pulling arm according to claim 1, characterized in that: The arm body (1) is provided with a rotation groove (11), the hook (2) is embedded in the rotation groove (11), a rotation shaft (23) is provided in the middle of the hook (2), and both ends of the rotation shaft (23) are passed through the arm body (1).

5. The rotary hook for mounting on a pulling arm according to claim 2, characterized in that: The positioning pin shaft (31) is provided with a handle (311), and the handle (311) is fixed to one end of the positioning pin shaft (31).

6. The rotary hook for mounting on a pulling arm according to claim 2, characterized in that: A pull plate (32) is provided at one end of the positioning pin shaft (31), the pull plate (32) is connected to the positioning pin shaft (31), a pull ring (321) is installed on the pull plate (32), a tension spring (322) is provided between the pull plate (32) and the pull arm body (1), and the tension spring (322) connects the pull plate (32) and the pull arm body (1).

7. The rotary hook for mounting on a pulling arm according to claim 6, characterized in that: A guide slope (33) is formed on one side of the hook (2) close to the pull plate (32), and the guide slope (33) is inclined toward the inner side of the positioning hole (25).

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