Lifting appliance and crane thereof

Abstract

The utility model provides a lifting appliance and a crane thereof, and belongs to the technical field of machinery. The lifting appliance comprises a hook body, the hook body comprises a hanging part and a connecting part, the hanging part is provided with an inlet, a sliding way is formed in the connecting part, and a connecting opening communicated with the sliding way is formed in one side of the connecting part; the limiting part is hinged to the connecting part, the limiting part penetrates through the connecting opening, the limiting part is provided with an adjusting part and a blocking part, and the adjusting part is used for controlling the blocking part to open or shield the inlet; the hanging rod is at least partially arranged in the slide way in a sliding mode, a first limiting block and a second limiting block are fixed to the hanging rod, the first limiting block is located above the second limiting block, the hanging rod is connected with the connecting part through a spring, and the hanging rod can move between a first position and a second position.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, specifically a lifting device and its crane. Background Technology

[0002] Traditional cranes have a limiting component at the hook inlet that can only be rotated inward to open the inlet. However, when unloading materials, this limiting component needs to be manually pried open to remove the items hanging on the hook, which is very inconvenient. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a lifting device and its crane, which has the function of automatically opening or closing the hook inlet.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A lifting device, comprising:

[0006] The hook body includes a hanging part and a connecting part. The hanging part has an inlet, the connecting part has a slide rail, and a connecting port communicating with the slide rail is provided on one side of the connecting part.

[0007] A limiting component is hinged to the connecting part and passes through the connecting port. The limiting component has an adjusting part and a blocking part. The adjusting part is used to control the blocking part to open or block the inlet.

[0008] A hanging rod, at least partially slidably disposed within a slide rail, a first limiting block and a second limiting block fixed on the hanging rod, the first limiting block being located above the second limiting block, the hanging rod being connected to the connecting part by a spring, and the hanging rod being able to move between a first position and a second position;

[0009] In the first position, the lower part of the first limiting block abuts against the upper part of the adjusting part to open the inlet of the blocking part; in the second position, the upper part of the second limiting block abuts against the lower part of the adjusting part to close the inlet of the blocking part, and the spring is in a stretched state.

[0010] In the above-mentioned lifting device, the free end of the hanging part is provided with a bayonet, and the free end of the limiting component is provided with an insertion part corresponding to the bayonet. In the second position, the insertion part is engaged with the bayonet.

[0011] In the above-mentioned lifting device, the slide is provided with a receiving cavity for the first limiting block and the second limiting block to enter. The limiting component has an abutment surface. In the second position, the opposite sides of the second limiting block abut against the abutment surface and the inner wall of the receiving cavity, respectively.

[0012] In the above-mentioned lifting device, the spring is located on the outside of the slide rail.

[0013] In the above-mentioned lifting device, a connecting ring is installed at the top of the hanging rod.

[0014] In the above-mentioned lifting device, the lower part of the first limiting block has a first arc-shaped pressing part, and the upper part of the adjusting part has a first arc-shaped guide surface that cooperates with the first arc-shaped pressing part.

[0015] In the above-mentioned lifting device, the upper part of the second limiting block has a second arc-shaped pressing part, and the lower part of the adjusting part has a second arc-shaped guide surface that cooperates with the second arc-shaped pressing part.

[0016] A crane comprising the aforementioned lifting device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the import open state in this application;

[0018] Figure 2 This is a schematic diagram of the closed state of the import in this application;

[0019] Figure 3 A schematic diagram of the hanging rod after it has been removed in this application;

[0020] In the picture,

[0021] 2. Hook body; 21. Hanging part; 211. Inlet; 212. Bayonet; 22. Connecting part; 221. Slide rail; 222. Connection port; 223. Receiving cavity; 2231. Inner wall;

[0022] 3. Limiting component; 31. Adjustment part; 311. First arc-shaped guide surface; 312. Second arc-shaped guide surface; 32. Blocking part; 33. Insertion part; 34. Abutting surface;

[0023] 4. Hanging rod; 41. First limiting block; 411. First arc-shaped extrusion part; 42. Second limiting block; 421. Second arc-shaped extrusion part; 43. Connecting ring;

[0024] 5. Spring. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, a lifting device includes: a hook body 2, a limiting component 3, and a hanging rod 4. The hook body 2 includes a hanging part 21 and a connecting part 22. The hanging part 21 has an inlet 211. The connecting part 22 has a slide rail 221 and a connection port 222 communicating with the slide rail 221 on one side. The limiting component 3 is hinged to the connecting part 22 and passes through the connection port 222. The limiting component 3 has an adjusting part 31 and a blocking part 32. The adjusting part 31 is used to control the blocking part 32 to open or block the inlet 211. The hanging rod 4 has at least a partial sliding design. The first limiting block 41 and the second limiting block 42 are fixed on the hanging rod 4, which is placed in the slide 221. The first limiting block 41 is located above the second limiting block 42. The hanging rod 4 is connected to the connecting part 22 through the spring 5. The hanging rod 4 can move between the first position and the second position. In the first position, the lower part of the first limiting block 41 abuts against the upper part of the adjusting part 31 so that the blocking part 32 opens the inlet 211. In the second position, the upper part of the second limiting block 42 abuts against the lower part of the adjusting part 31 so that the blocking part 32 closes the inlet 211 and the spring 5 is in a stretched state.

[0027] The working process of the lifting device revolves around the switching of the hanging rod 4 in the first position and the second position. When the lifting device is in an unloaded state, the lower part of the first limiting block 41 on the hanging rod 4 abuts against the upper part of the adjusting part 31 of the limiting component 3. Under this abutting action, the blocking part 32 of the limiting component 3 is pushed open, so that the inlet 211 of the hanging part 21 of the hook body 2 is in an open state, which makes it easy to put the item to be hung into the hook.

[0028] When an item needs to be hung, the weight of the item acts on the hook body 2. During lifting, the hanging rod 4 overcomes the tension of the spring 5 and slides upward, extending out of the slide rail 221. That is, the top of the hanging rod 4 gradually moves away from the connecting part 22. At this time, the upper part of the second limiting block 42 on the hanging rod 4 abuts against the lower part of the adjusting part 31 of the limiting component 3, forcing the limiting component 3 to rotate, causing the blocking part 32 to close the inlet 211 of the hanging part 21, preventing the item from falling off the inlet 211. At the same time, the spring 5 is in a stretched state. In this application, the spring 5 is also in a slightly stretched state when there is no load, so that the top of the hanging rod 4 can be closer to the connecting part 22 when there is no external load.

[0029] When the material is picked up, as the item is removed, the weight on the hook body 2 disappears, and the tension of the spring 5 causes the hanging rod 4 to gradually retract into the slide 221. The part of the first limit block 41 abuts against the adjustment part 31 again, causing the blocking part 32 to reopen the inlet 211, completing one picking and putting cycle.

[0030] Without the need for manual operation of the limit component 3, the position of the hanging rod 4 changes under load and no load conditions to control the opening or closing of the blocking part 32 to the inlet 211, which simplifies the material handling process, saves manpower, and improves work efficiency.

[0031] Specifically, the free end of the hanging part 21 is provided with a slot 212, and the free end of the limiting member 3 is provided with an insertion part 33 corresponding to the slot 212. In the second position, the insertion part 33 is engaged with the slot 212.

[0032] This design enables the limiting component 3 to completely seal the inlet 211.

[0033] Specifically, the slide 221 is provided with a receiving cavity 223 for the first limiting block 41 and the second limiting block 42 to enter. The limiting component 3 has an abutment surface 34. In the second position, the opposite sides of the second limiting block 42 abut against the abutment surface 34 and the inner wall 2231 of the receiving cavity 223, respectively.

[0034] When in the second position, the second limiting block 42 abuts against the abutment surface 34 and the inner wall 2231 of the accommodating cavity 223 on both sides, forming a bidirectional constraint. This constraint prevents the second limiting block 42 from shifting or shaking when subjected to force, and can stably apply force to the adjustment part 31 of the limiting component 3, ensuring that the blocking part 32 continuously and reliably closes the inlet 211, further improving the stability of the lifting device under load.

[0035] Specifically, the spring 5 is located on the outside of the slide 221.

[0036] Specifically, a connecting ring 43 is installed at the top of the hanging rod 4.

[0037] Specifically, the lower part of the first limiting block 41 has a first arc-shaped pressing part 411, and the upper part of the adjusting part 31 has a first arc-shaped guide surface 311.

[0038] When the first limiting block 41 interacts with the adjusting part 31, the first arc-shaped pressing part 411 slides along the first arc-shaped guide surface 311, avoiding local stress concentration that may be caused by sharp corners or flat contact, reducing the wear rate caused by friction and pressing, and extending the service life of the limiting part 3 and the hanging rod 4.

[0039] Specifically, the upper part of the second limiting block 42 has a second arc-shaped pressing part 421, and the lower part of the adjusting part 31 has a second arc-shaped guide surface 312 that cooperates with the second arc-shaped pressing part 421.

[0040] The fit between the second arc-shaped extrusion part 421 and the second arc-shaped guide surface 312 enables the force exerted by the second limit block 42 on the adjustment part 31 to be accurately transmitted along the arc-shaped surface, ensuring that the adjustment part 31 maintains a stable closed inlet 211 according to the design angle.

[0041] A crane comprising the aforementioned lifting device.

[0042] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the meaning of "and / or" throughout the text includes three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0044] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0045] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from this utility model or exceeding the scope defined by the appended claims.

Claims

1. A lifting device, characterized in that, include: The hook body (2) includes a hanging part (21) and a connecting part (22). The hanging part (21) has an inlet (211), and the connecting part (22) has a slide (221). The connecting part (22) has a connection port (222) communicating with the slide (221) on one side. A limiting component (3) is hinged to the connecting part (22) and passes through the connecting port (222). The limiting component (3) has an adjusting part (31) and a blocking part (32). The adjusting part (31) is used to control the blocking part (32) to open or block the inlet (211). Hanging rod (4), the hanging rod (4) is at least partially slidably disposed in slide rail (221), the hanging rod (4) is fixed with a first limiting block (41) and a second limiting block (42), the first limiting block (41) is located above the second limiting block (42), the hanging rod (4) is connected to the connecting part (22) by spring (5), and the hanging rod (4) can move between a first position and a second position; In the first position, the lower part of the first limiting block (41) abuts against the upper part of the adjusting part (31) so that the blocking part (32) opens the inlet (211); in the second position, the upper part of the second limiting block (42) abuts against the lower part of the adjusting part (31) so that the blocking part (32) closes the inlet (211) and the spring (5) is in a stretched state.

2. The lifting device according to claim 1, characterized in that, The free end of the hanging part (21) is provided with a bayonet (212), and the free end of the limiting component (3) is provided with an insertion part (33) corresponding to the bayonet (212). In the second position, the insertion part (33) is engaged with the bayonet (212).

3. The lifting device according to claim 1, characterized in that, The slide (221) is provided with a receiving cavity (223) for the first limiting block (41) and the second limiting block (42) to enter. The limiting component (3) has an abutting surface (34). In the second position, the opposite sides of the second limiting block (42) abut against the abutting surface (34) and the inner wall (2231) of the receiving cavity (223) respectively.

4. The lifting device according to claim 1, characterized in that, The spring (5) is located on the outside of the slide (221).

5. The lifting device according to claim 1, characterized in that, A connecting ring (43) is installed at the top of the hanging rod (4).

6. The lifting device according to claim 1, characterized in that, The lower part of the first limiting block (41) has a first arc-shaped pressing part (411), and the upper part of the adjusting part (31) has a first arc-shaped guide surface (311) that cooperates with the first arc-shaped pressing part (411).

7. The lifting device according to claim 1, characterized in that, The upper part of the second limiting block (42) has a second arc-shaped pressing part (421), and the lower part of the adjusting part (31) has a second arc-shaped guide surface (312) that cooperates with the second arc-shaped pressing part (421).

8. A crane, characterized in that, Includes the lifting device described in any one of claims 1-7.

Images