Quick adjusting chain device for lever block

Abstract

The utility model relates to the technical field of lever hoists, in particular to a lever hoist quick adjusting chain device which comprises a shell, a motor is fixedly connected to the outer side of the shell, a second rotating shaft penetrating through the shell is fixedly connected to one end of the motor, and a second limiting block is fixedly connected to the outer side of the second rotating shaft. According to the device, the first limiting groove, the first rotating shaft, the first rotating block, the second rotating shaft, the second rotating block, the fixing block, the spring and other components are arranged, the first rotating shaft moves in the first limiting groove, the distance between the first rotating block and the second rotating block can be adjusted, and therefore the distance between the first rotating block and the second rotating block can be adjusted; the chain can be always clamped by the first rotating block and the second rotating block through the spring and the fixing block, the device can be compatible with the chains of different sizes, and therefore the problem that an existing quick chain adjusting device for the lever block cannot adapt to the lever blocks of different models due to the fact that the chains of the different lever blocks are different in thickness is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lever hoists, in particular to a quick-adjusting chain device for a lever hoist. Background Art

[0002] The lever hoist is a manual lifting tool that is easy to use and carry. The lever hoist can be used for lifting, pulling, lowering, calibrating and other operations. The lifting capacity is generally not more than 50 tons. It is widely used in equipment installation, lifting of objects, pulling of machine parts, etc. in industries such as shipbuilding, electricity, transportation, construction, mining, post and telecommunications.

[0003] The existing quick-adjustment chain device for a lever hoist cannot adapt to different models of lever hoists because the chain thicknesses of different lever hoists are different; the existing quick-adjustment chain device for a lever hoist cannot prevent the chain from slipping during quick adjustment, and the slipping may cause the adjustment device to rotate while the chain does not rotate. Therefore, a quick-adjustment chain device for a lever hoist is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide a lever hoist quick adjustment chain device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A quick-adjustment chain device for a lever hoist comprises a shell, the outer side of the shell is fixedly connected to a motor, one end of the motor is fixedly connected to a second rotating shaft that passes through the shell, the outer side of the second rotating shaft is fixedly connected to a second limiting block, the inner side of the second limiting block is fixedly connected to a second rotating block, the outer side of the second rotating block is fixedly connected to a fixing rod, the top end of the shell is fixedly connected to a connecting rod, the outer side of the fixing rod is slidably connected to a chain, and a second limiting groove is provided at the center position of the top end of the shell.

[0007] Preferably, a first limiting groove is provided on the outer side of the shell, a first rotating shaft is slidably connected inside the first limiting groove, a fixed block is rotatably connected to the outer side of the first rotating shaft, a spring is fixedly connected to the outer side of the fixed block, a first limiting block located inside the fixed block is fixedly connected to the outer side of the first rotating shaft, and a first rotating block is fixedly connected to the inner side of the first limiting block.

[0008] Preferably, one end of the spring away from the fixing block is fixedly connected to the housing, and there are two springs, which are symmetrically arranged between the housing and the fixing block.

[0009] Preferably, one end of the second rotating shaft away from the motor is rotatably connected to a housing.

[0010] Preferably, a chain is rotatably connected between the second rotating block and the first rotating block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by setting the first limit groove, the first rotating shaft, the first rotating block, the second rotating shaft, the second rotating block, the fixed block and the spring and other components, the first rotating shaft moves in the first limit groove, the distance between the first rotating block and the second rotating block can be adjusted, and the chain can be clamped by the first rotating block and the second rotating block at all times through the spring and the fixed block, and can be compatible with chains of different sizes, thereby solving the problem that the existing lever hoist quick adjustment chain device cannot adapt to different models of lever hoists due to the different thickness of the chains of different lever hoists;

[0013] 2. In the utility model, by setting the first rotating block, the fixed rod and the second rotating block and other components, while the second rotating block drives the chain to rotate, the fixed rod can pass through the hole in the middle of the chain, and the other side of the chain fits with the first rotating block. The first rotating block is used to ensure that the chain and the second rotating block are tightly fitted. The fixed rod can move the chain to rotate stably to prevent slipping during rotation, thereby solving the problem that the existing hand-operated hoist quick-adjusting chain device cannot prevent the chain from slipping during quick adjustment, and the slipping will cause the adjustment device to rotate but the chain does not rotate;

[0014] 3. In the utility model, the first limit block and the second limit block components are provided to fix the chain position at the center of the first rotating block and the second rotating block, thereby preventing the problem that the chain cannot be accurately passed through by the fixing rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in top view.

[0018] In the figure: 1, housing; 2, first limiting groove; 3, first rotating shaft; 4, fixing block; 5, spring; 6, first limiting block; 7, first rotating block; 8, second limiting groove; 9, second rotating shaft; 10, second limiting block; 11, second rotating block; 12, fixing rod; 13, motor; 14, connecting rod; 15, chain. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the utility model, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0021] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the practical protection scope of this new model.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] A quick-adjustment chain device for a lever hoist comprises a shell 1, an outer side of the shell 1 is fixedly connected to a motor 13, one end of the motor 13 is fixedly connected to a second rotating shaft 9 that penetrates the shell 1, an outer side of the second rotating shaft 9 is fixedly connected to a second limiting block 10, an inner side of the second limiting block 10 is fixedly connected to a second rotating block 11, an outer side of the second rotating block 11 is fixedly connected to a fixing rod 12, a top end of the shell 1 is fixedly connected to a connecting rod 14, an outer side of the fixing rod 12 is slidably connected to a chain 15, and a second limiting groove 8 is provided at the top center of the shell 1.

[0024] A first limiting groove 2 is provided on the outer side of the shell 1, and a first rotating shaft 3 is slidably connected inside the first limiting groove 2. A fixed block 4 is rotatably connected to the outer side of the first rotating shaft 3, and a spring 5 is fixedly connected to the outer side of the fixed block 4. A first limiting block 6 located inside the fixed block 4 is fixedly connected to the outer side of the first rotating shaft 3, and a first rotating block 7 is fixedly connected to the inner side of the first limiting block 6. The end of the spring 5 away from the fixed block 4 is fixedly connected to the shell 1, and there are two springs 5, which are symmetrically arranged between the shell 1 and the fixed block 4. The end of the second rotating shaft 9 away from the motor 13 is rotatably connected to the shell 1, and a chain 15 is rotatably connected between the second rotating block 11 and the first rotating block 7.

[0025] Working process: When the lever block needs to be used to quickly adjust the chain device, first fix the housing 1 to the top of the lever block through the connecting rod 14, and the chain 15 of the lever block passes through the second limiting groove 8 and is arranged between the first rotating block 7 and the second rotating block 11. The first rotating shaft 3 moves in the first limiting groove 2 to adjust the distance between the first rotating block 7 and the second rotating block 11. The spring 5 and the fixing block 4 can always ensure that the chain 15 is clamped by the first rotating block 7 and the second rotating block 11, and can be compatible with chains 15 of different sizes. Then, the motor 13 is controlled to rotate by an external power supply, and the motor 13 drives The second rotating shaft 9 rotates, and the second rotating shaft 9 drives the second limit block 10 and the second rotating block 11 to rotate. While the second rotating block 11 drives the chain 15 to rotate, the fixing rod 12 can pass through the hole in the middle of the chain 15, and the other side of the chain 15 fits with the first rotating block 7. The first rotating block 7 is used to ensure that the chain 15 and the second rotating block 11 are tightly fitted. The fixing rod 12 can drive the chain 15 to rotate stably to prevent slipping during rotation. When the chain 15 is pulled, it will drive the first rotating block 7 and the first rotating shaft 3 to rotate inside the fixing block 4 and the first limit groove 2, so that the chain 15 can be pulled more smoothly.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lever hoist quick adjustment chain device, comprising a housing (1), characterized in that: The outer side of the housing (1) is fixedly connected to a motor (13); one end of the motor (13) is fixedly connected to a second rotating shaft (9) penetrating the housing (1); the outer side of the second rotating shaft (9) is fixedly connected to a second limiting block (10); the inner side of the second limiting block (10) is fixedly connected to a second rotating block (11); the outer side of the second rotating block (11) is fixedly connected to a fixing rod (12); the top end of the housing (1) is fixedly connected to a connecting rod (14); the outer side of the fixing rod (12) is slidably connected to a chain (15); and a second limiting groove (8) is provided at the center of the top end of the housing (1).

2. A lever hoist quick adjustment chain device according to claim 1, characterized in that: A first limiting groove (2) is provided on the outer side of the housing (1); a first rotating shaft (3) is slidably connected inside the first limiting groove (2); a fixed block (4) is rotatably connected to the outer side of the first rotating shaft (3); a spring (5) is fixedly connected to the outer side of the fixed block (4); a first limiting block (6) located inside the fixed block (4) is fixedly connected to the outer side of the first rotating shaft (3); and a first rotating block (7) is fixedly connected to the inner side of the first limiting block (6).

3. A lever hoist quick adjustment chain device according to claim 2, characterized in that: One end of the spring (5) away from the fixing block (4) is fixedly connected to the housing (1), and there are two springs (5) which are symmetrically arranged between the housing (1) and the fixing block (4).

4. A lever hoist quick adjustment chain device according to claim 1, characterized in that: One end of the second rotating shaft (9) away from the motor (13) is rotatably connected to the housing (1).

5. The lever hoist quick adjustment chain device according to claim 1, characterized in that: A chain (15) is rotatably connected between the second rotating block (11) and the first rotating block (7).

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