Device for preventing lifting chain from being blocked

Abstract

The utility model relates to the technical field of lifting chains, and discloses a lifting chain blocking prevention device for a lifting chain, which comprises a horizontal adjusting rod, a supporting rod, a rotating block and a limiting component. Connecting blocks are symmetrically arranged at the two ends of the horizontal adjusting rod, one end of the supporting rod is rotatably connected to the connecting blocks, the other end of the supporting rod is connected to the chain block, one side of the rotating block extends to be connected with a connecting screw, and the connecting screw penetrates through the connecting block and is connected to the connecting block through an adjusting nut; the limiting assembly comprises a first limiting semi-ring and a second limiting semi-ring. One side of the first limiting semi-ring is rotatably connected to the rotating block, the second limiting semi-ring is connected to the first limiting semi-ring through a bolt, the first limiting semi-ring and the second limiting semi-ring can define an annular structure, the annular structure can contain the lifting chains, and the lifting chains are expanded in a certain direction through the device, so that winding between the lifting chains is reduced; therefore, the anti-blocking effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hanging chain technology, and more specifically, to a device for preventing hanging chain jamming. Background Technology

[0002] Lifting chains lift heavy objects by manually pulling the chain, which rotates the sprocket, friction plate ratchet, and brake seat together. In daily production, lifting chains are generally used horizontally or at an angle. This makes the chain prone to tangling, preventing it from smoothly entering the track and causing jamming. This inconveniences workers when replacing large equipment parts and prolongs maintenance time. Therefore, there is a need to find a device to prevent lifting chains from jamming and solve the above problems. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this utility model provides an anti-chain jamming device for lifting chains, which has the advantage of preventing chain jamming.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a chain anti-blocking device for lifting chains, comprising: a horizontal adjusting rod, wherein connecting blocks are symmetrically arranged at both ends of the horizontal adjusting rod.

[0005] A support rod, one end of which is rotatably connected to the connecting block, and the other end of which is connected to the hand chain hoist;

[0006] A rotating block, with a connecting screw extending from one side of the rotating block, the connecting screw passing through the connecting block and connected to the connecting block by an adjusting nut;

[0007] A limiting component, movably connected to the side of the rotating block away from the connecting screw, the limiting component comprising:

[0008] The first limiting half-ring, one side of which is rotatably connected to the rotating block;

[0009] The second limiting half ring is bolted to the first limiting half ring;

[0010] The first limiting semi-ring and the second limiting semi-ring can form a ring structure, which can accommodate the hanging chain.

[0011] As a preferred embodiment of this utility model, the upper and lower edges of the first limiting half-ring are configured as semi-trumpet shapes, and the upper and lower edges of the second limiting half-ring are configured as semi-trumpet shapes.

[0012] As a preferred technical solution of this utility model, first connecting plates extend from both sides of the first limiting semi-ring, and the first connecting plates are provided with first through holes. The first connecting plates are rotatably connected to the rotating block. Second connecting plates extend from both sides of the second limiting semi-ring, and the second connecting plates are provided with second through holes. The first connecting plates and the second connecting plates are connected by bolts.

[0013] As a preferred embodiment of this utility model, the horizontal adjustment rod includes:

[0014] A horizontal bar, with the connecting block fixed to its end;

[0015] A rotating tube is provided, with its two ends connected to the ends of the two horizontal rods away from the connecting block. Rotating the rotating tube can control the two horizontal rods to move closer to or further apart from each other.

[0016] As a preferred embodiment of this invention, the outer surface of the rotating tube is provided with an anti-slip structure.

[0017] As a preferred embodiment of this invention, the inner wall of the annular structure has a smooth surface.

[0018] As a preferred embodiment of this utility model, the first limiting semi-ring is detachably connected to the rotating block.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: By connecting the support rods below the hand chain hoist, the relative positions of the horizontal adjusting rod, the two support rods, and the hand chain hoist are fixed. The section of the two support rods away from the connecting block can be fixed to the hand chain hoist with bolts. The first limiting half-ring is connected to the rotating block. The chain connected to the hand chain hoist is brought close to the first limiting half-ring. Then, the second limiting half-ring is detachably connected to the first limiting half-ring with bolts. The ring structure formed by the first and second limiting half-rings can limit and separate the two ends of the chain, so that the section of the chain close to the device is opened up, reducing the chance of entanglement, thereby achieving the effect of preventing the chain from jamming. Attached Figure Description

[0020] Figure 1 A schematic diagram of a chain anti-blocking device for a hanging chain provided for an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the horizontal bar, rotating block, and limiting component structure provided for an embodiment of this utility model;

[0022] In the figure: horizontal adjusting rod 1, horizontal rod 10, rotating tube 11, connecting block 12, rotating block 2, connecting screw 20, adjusting nut 21, limiting assembly 3, first limiting half ring 30, first connecting plate 300, second limiting half ring 31, second connecting plate 310, support rod 4. Detailed Implementation

[0023] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1-2 As shown, this utility model provides an anti-chain jamming device for lifting chains, comprising: a horizontal adjusting rod 1, a support rod 4, a rotating block 2, and a limiting component 3. Connecting blocks 12 are symmetrically arranged at both ends of the horizontal adjusting rod 1. One end of the support rod 4 is rotatably connected to the connecting block 12, and the other end is connected to a hand-operated hoist. A connecting screw 20 extends from one side of the rotating block 2, passing through the connecting block 12 and connected to it via an adjusting nut 21. The limiting component 3 is movably connected to the side of the rotating block 2 away from the connecting screw 20. The limiting component 3 includes: a first limiting half-ring 30 and a second limiting half-ring 31. One side of the first limiting half-ring 30 is rotatably connected to the rotating block 2. The second limiting half-ring 31 is bolted to the first limiting half-ring 30. The first limiting half-ring 30 and the second limiting half-ring 31 can form a ring structure, which can accommodate the lifting chain. Preferably, the inner wall of the ring structure has a smooth surface.

[0025] The tops of the two connecting blocks 12 of the device are connected to the bottom of the hand chain hoist via support rods 4, thus fixing the relative positions of the horizontal adjusting rod 1, the two support rods 4, and the hand chain hoist. The section of the two support rods 4 away from the connecting blocks 12 can be fixed to the hand chain hoist with bolts. The first limiting half-ring 30 is connected to the rotating block 2. The chain connected to the hand chain hoist is brought close to the first limiting half-ring 30. The second limiting half-ring 31 is then detachably connected to the first limiting half-ring 30 with bolts. The ring structure formed by the first limiting half-ring 30 and the second limiting half-ring 31 can limit and separate the two ends of the chain, thus opening up the section of the chain close to the device and reducing the chance of entanglement.

[0026] For different usage scenarios of the chain hoist, such as horizontal or inclined use, the connection position of the support rod 4 and the hand chain hoist is fixed. By adjusting the angle of the rotating block 2 relative to the connecting block 12, the movement direction of the chain hoist is adjusted. The inner wall of the ring structure is made into a smooth surface to reduce the friction between the chain hoist and the ring structure, thereby reducing the wear on the chain hoist.

[0027] It should be noted that the support rod 4 is detachably connected to one end of the connecting block 12. In order to increase the adaptability of the device, the anti-jamming position can be controlled by adjusting the length of the support rod 4.

[0028] In this embodiment, as Figure 1-2 As shown, the upper and lower edges of the first limiting half-ring 30 are set in a semi-trumpet shape, and the upper and lower edges of the second limiting half-ring 31 are set in a semi-trumpet shape. The first limiting half-ring 30 and the second limiting half-ring 31 are spliced ​​together to form a ring structure with the upper and lower edges in a trumpet shape. The upper and lower edges of the ring structure are set in a trumpet shape, which can reduce the scraping of the ring structure edges on the chain when the chain is separated from the ring structure.

[0029] In this embodiment, first connecting plates 300 extend from both sides of the first limiting semi-ring 30, and the first connecting plates 300 are provided with first through holes. One of the first connecting plates 300 is rotatably connected to the rotating block 2. Second connecting plates 310 extend from both sides of the second limiting semi-ring 31, and the second connecting plates 310 are provided with second through holes. The first connecting plates 300 and the second connecting plates 310 are connected by bolts. Preferably, the first limiting semi-ring 30 is detachably connected to the rotating block 2. The ring structure formed by the first limiting semi-ring 30 and the second limiting semi-ring 31 can accommodate chains of different thicknesses. The first limiting semi-ring 30 can deflect at a certain angle relative to the rotating block 2, so that when the chain enters the ring structure, the chain rubs against the inner wall of the ring structure. The ring structure can deflect under the drive of the chain, providing a certain buffer space and avoiding hard contact between the chain and the ring structure.

[0030] In this embodiment, the horizontal adjusting rod 1 includes a horizontal rod 10 and a rotating tube 11. A connecting block 12 is fixed to the end of the horizontal rod 10. The two ends of the rotating tube 11 are respectively connected to the ends of the two horizontal rods 10 away from the connecting block 12. Rotating the rotating tube 11 can control the two horizontal rods 10 to move closer or further apart. Preferably, the outer surface of the rotating tube 11 is provided with an anti-slip structure. The horizontal adjusting rod 1 can achieve length adjustment by rotating the rotating tube 11, thereby controlling the degree of expansion of the hanging chain by the device and increasing the adaptability of the device.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing chain jamming in lifting chains, characterized in that, include: A horizontal adjusting rod (1) is provided, with connecting blocks (12) symmetrically arranged at both ends of the horizontal adjusting rod (1). Support rod (4), one end of which is rotatably connected to the connecting block (12), and the other end is connected to the hand chain hoist; A rotating block (2) has a connecting screw (20) extending from one side. The connecting screw (20) passes through the connecting block (12) and is connected to the connecting block (12) by an adjusting nut (21). A limiting component (3) is movably connected to the side of the rotating block (2) away from the connecting screw (20), and the limiting component (3) includes: The first limiting half ring (30) is rotatably connected to the rotating block (2) on one side; The second limiting half ring (31) is bolted to the first limiting half ring (30); The first limiting semi-ring (30) and the second limiting semi-ring (31) can form a ring structure, which can accommodate the hanging chain.

2. The anti-blocking device for a hanging chain according to claim 1, characterized in that, The upper and lower edges of the first limiting half-ring (30) are set in a semi-trumpet shape, and the upper and lower edges of the second limiting half-ring (31) are set in a semi-trumpet shape.

3. The anti-blocking device for a hanging chain according to claim 1, characterized in that, First connecting plates (300) extend from both sides of the first limiting semi-ring (30), and the first connecting plates (300) are provided with first through holes. The first connecting plates (300) are rotatably connected to the rotating block (2). Second connecting plates (310) extend from both sides of the second limiting semi-ring (31), and the second connecting plates (310) are provided with second through holes. The first connecting plates (300) and the second connecting plates (310) are connected by bolts.

4. A chain jamming prevention device for lifting chains according to claim 1, characterized in that, The horizontal adjusting rod (1) includes: A horizontal bar (10), the end of which is fixed with the connecting block (12); Rotating tube (11), with its two ends connected to the ends of the two horizontal rods (10) away from the connecting block (12), rotating the rotating tube (11) can control the two horizontal rods (10) to move closer to or further away from each other.

5. A chain jamming prevention device for lifting chains according to claim 4, characterized in that, The outer surface of the rotating tube (11) is provided with an anti-slip structure.

6. A chain jamming prevention device for lifting chains according to claim 1, characterized in that, The inner wall of the annular structure has a smooth surface.

7. A chain jamming prevention device for lifting chains according to claim 3, characterized in that, The first limiting half ring (30) is detachably connected to the rotating block (2).

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