Chain hoist with adjustable length

Abstract

The utility model is applicable to the field of hoisting equipment, and provides a chain hoist with adjustable length, which comprises a hoist main body, a hand pulling chain, a hoisting chain, an adjusting component arranged at the lower end of the hoisting chain and a lifting hook arranged at the lower end of the adjusting component, the reel comprises a winding roller and two chucks, and a plurality of lock teeth are annularly, evenly and fixedly arranged on the edges of the chucks. When the length of the chain block needs to be adjusted, the locking bolt is taken down, the reel can freely rotate, the steel wire rope is pulled or the reel is rotated to wind the steel wire rope, so that the length of the steel wire rope is freely adjusted, after the steel wire rope is adjusted to the proper length, the locking bolt is clamped into the locking teeth, and at the moment, the whole reel is locked and cannot rotate; by adjusting the length of the steel wire rope, the overall length of the chain hoist is changed, different hoisting requirements can be met conveniently, and higher flexibility is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hoisting equipment field, especially relates to a length -adjustable hand chain block. BACKGROUND

[0002] Hand chain block refers to the light and small hoisting equipment that is pulled by human power to lift or pull heavy objects, is divided into hand chain block and hand plate chain block two, is mainly used to lift and move small equipment and goods. Because its simple structure, convenient to use, low cost and other characteristics, has become one of the preferred hoisting equipment in many places.

[0003] When using the hand chain block, it usually needs to be hung in the high place, but the total length of the existing hand chain block hoisting chain is usually fixed and cannot be changed, and the length of the hoisting chain determines the hoisting capacity of the hand chain block, when the installation position of the hand chain block is harsh, the hook is difficult to hoist the goods, and there are many problems. UTILITY MODEL CONTENTS

[0004] The utility model embodiment is to solve the problems in the background art.

[0005] The utility model embodiment is realized in this way, a length -adjustable hand chain block, including the main body of the chain block, hand chain, hoisting chain, the adjusting assembly installed at the lower end of the hoisting chain and the hook installed at the lower end of the adjusting assembly, the adjusting assembly includes the mounting shell, the winch and the locking bolt, the fixed seat is fixedly arranged on the mounting shell top, the fixed shaft is fixedly installed in the fixed seat, the lower end of the hoisting chain is sleeved on the fixed shaft, the mounting shaft is fixedly arranged in the fixed shaft, the winch is sleeved on the outside of the mounting shaft, the winch includes the winding roller and two chucks, the chuck is fixedly arranged at winding roller both ends, a plurality of locking teeth are uniformly arranged in the edge of the chuck and are fixed, the steel wire rope is wound on the outside of the winding roller, the locking bolt is located above the winch and is movably penetrated through the side wall of the mounting shell and extends to the outside, the locking bolt is movably clamped in the locking tooth, and the lower end of the steel wire rope is fixedly connected with the hook.

[0006] As a further scheme of the utility model: the mounting shell is integrally provided as a "U" shaped structure, and the fixed seat is integrally cast with the mounting shell.

[0007] As a further scheme of the utility model: the locking tooth is provided as a circular groove matched with the diameter of the locking bolt, and the locking teeth on the two chucks are aligned.

[0008] As a further scheme of the utility model: the locking bolt is provided as a nail structure with a flat head at one end and a pointed end at the other end, a limiting hole is fixedly arranged at the pointed end of the locking bolt, and a limiting bolt is movably clamped in the limiting hole.

[0009] As a further scheme of the utility model: two support rods are fixedly installed on the lower end of the installation shell.

[0010] As a further scheme of the utility model: an adjusting roller is movably installed on each of the two support rods, a limiting groove is formed on the outer side of the adjusting roller corresponding to the steel wire rope, and the limiting groove is in the shape of an arc matching the cross section of the steel wire rope.

[0011] The utility model has the advantages of:

[0012] 1. The utility model embodiment provides a length-adjustable hand-operated hoist, when the length of the hand-operated hoist needs to be adjusted, the locking bolt is removed, so that the sheave can rotate freely, the steel wire rope is wound by pulling the steel wire rope or rotating the sheave, so that the length of the steel wire rope is freely adjusted, after the steel wire rope is adjusted to the appropriate length, the locking bolt is clamped into the lock tooth, at this time, the sheave is locked as a whole and cannot rotate, so that the length of the steel wire rope is fixed, by adjusting the length of the steel wire rope, the length of the hand-operated hoist as a whole is changed, different hoisting requirements are conveniently adapted, and higher flexibility is achieved.

[0013] 2. The utility model embodiment provides a length-adjustable hand-operated hoist, the locking bolt is fixed by the limiting bolt, so that the locking bolt is prevented from falling off during hoisting, so that the locking of the sheave is invalid, and then the hoisted goods falls, which affects the property safety and the personal safety of workers.

[0014] 3. The utility model embodiment provides a length-adjustable hand-operated hoist, the steel wire rope is limited by the limiting groove, so that the lower end extension section of the steel wire rope is located on the central axis of the installation shell, the stability of the whole is improved, and the shaking range during hoisting is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 A perspective view of a length-adjustable hand-operated hoist is provided for the utility model embodiment;

[0016] Fig. 2 A partial perspective view of a length-adjustable hand-operated hoist is provided for the utility model embodiment;

[0017] Fig. 3 An exploded view of a length-adjustable hand-operated hoist adjusting assembly is provided for the utility model embodiment.

[0018] In the attached diagram: hoist body 1, hand chain 2, lifting chain 3, adjusting assembly 4, mounting shell 41, fixing base 411, support rod 412, fixing shaft 42, mounting shaft 43, winch 44, winding roller 441, chuck 442, locking tooth 4421, wire rope 45, locking pin 46, limiting hole 461, limiting pin 47, adjusting roller 48, limiting groove 481, hook 5. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0021] like Figs. 1 to 3 As shown, an adjustable-length manual hoist according to an embodiment of this utility model includes a hoist body 1, a hand chain 2, a lifting chain 3, an adjustment component 4 installed at the lower end of the lifting chain 3, and a hook 5 installed at the lower end of the adjustment component 4. The adjustment component 4 includes a mounting housing 41, a winch 44, and a locking pin 46. A fixed base 411 is fixedly disposed on the upper part of the mounting housing 41, and a fixed shaft 42 is fixedly installed inside the fixed base 411. The lower end of the lifting chain 3 is fitted onto the fixed shaft 42, and a mounting bracket is fixedly disposed inside the fixed shaft 42. Shaft 43, the winch 44 is mounted on the outside of the shaft 43, the winch 44 includes a take-up roller 441 and two chucks 442, the chucks 442 are fixedly mounted at both ends of the take-up roller 441, the edge of the chuck 442 is evenly distributed with multiple locking teeth 4421, a steel wire rope 45 is wound around the outside of the take-up roller 441, the locking pin 46 is located above the winch 44 and extends outward through the side wall of the mounting housing 41, the middle of the locking pin 46 is movably locked in the locking teeth 4421, and the lower end of the steel wire rope 45 is fixedly connected to the hook 5.

[0022] In one embodiment of this utility model, when it is necessary to adjust the length of the manual hoist, the locking pin 46 is removed, allowing the winch 44 to rotate freely. The wire rope 45 is pulled or the winch 44 is rotated to wind up the wire rope 45, thereby freely adjusting the length of the wire rope 45. After the wire rope 45 is adjusted to a suitable length, the locking pin 46 is engaged in the locking teeth 4421. At this time, the winch 44 is locked and cannot rotate, thus fixing the length of the wire rope 45. By adjusting the length of the wire rope 45, the overall length of the manual hoist can be changed, making it convenient to adapt to different lifting requirements and providing greater flexibility.

[0023] As another embodiment of the utility model, the mounting shell 41 is integrally casted as a "U" shaped structure.

[0024] In an embodiment of the utility model, the mounting shell 41 is integrally casted as a "U" shaped structure, which facilitates the installation and disassembly of the internal structure, and the mounting shell 41 and the fixing seat 411 are integrally casted, which can improve the overall strength and ensure the stability and safety of hoisting.

[0025] As shown in Fig. 2 and Fig. 3 As another embodiment of the utility model, the locking tooth 4421 is set as a circular groove matched with the diameter of the locking bolt 46, and the locking teeth 4421 on the two chucks 442 are aligned.

[0026] In an embodiment of the utility model, the locking teeth 4421 on the two chucks 442 are aligned, so that the locking bolt 46 is clamped into the locking tooth 4421 to lock the sheave 44.

[0027] As shown in Fig. 3 As another embodiment of the utility model, the locking bolt 46 is set as a nail structure with a flat head at one end and a sharp end at the other end, the sharp end of the locking bolt 46 is fixed with a limiting hole 461, and the limiting pin 47 is movably clamped in the limiting hole 461.

[0028] In an embodiment of the utility model, the locking bolt 46 is fixed by the limiting pin 47, which prevents the locking bolt 46 from falling off during hoisting, thereby causing the locking of the sheave 44 to fail, and further causing the hoisted goods to fall, which affects the property safety and the personal safety of workers.

[0029] As shown in Fig. 2 and Fig. 3 As another embodiment of the utility model, two supporting rods 412 are fixedly installed at the lower end of the mounting shell 41.

[0030] In an embodiment of the utility model, the lower end of the mounting shell 41 is fixed and supported by the supporting rod 412, thereby ensuring the strength of the mounting shell 41 and improving the overall service life of the chain hoist.

[0031] As shown in Fig. 2 As another embodiment of the utility model, the adjusting roller 48 is movably installed on the two supporting rods 412, the limiting groove 481 is formed on the outer side of the adjusting roller 48 corresponding to the steel wire rope 45, and the cross section of the limiting groove 481 is an arc shape matched with the cross section of the steel wire rope 45.

[0032] In one embodiment of the utility model, the limiting groove 481 is set to limit the steel wire rope 45, ensure that the lower end extension section of steel wire rope 45 is located on the central axis of mounting shell 41, improve the stability of whole, reduce the swing range when hoisting.

[0033] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0034] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0037] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. An adjustable length hand operated hoist comprising a hoist body (1), a hand pull chain (2), a load chain (3), an adjustment assembly (4) mounted at the lower end of the load chain (3) and a hook (5) mounted at the lower end of the adjustment assembly (4), characterised in that, The adjusting assembly (4) comprises a mounting shell (41), a winch (44) and a locking bolt (46), the mounting shell (41) is fixedly provided with a fixed seat (411) above, the fixed seat (411) is fixedly installed with a fixed shaft (42) inside, the lower end of the hoisting chain (3) is sleeved on the fixed shaft (42), the fixed shaft (42) is fixedly provided with a mounting shaft (43) inside, the winch (44) is sleeved outside the mounting shaft (43), the winch (44) comprises a winding roller (441) and two chucks (442), the chucks (442) are fixedly arranged at both ends of the winding roller (441), a plurality of locking teeth (4421) are uniformly and fixedly arranged on the edge of the chuck (442) in a ring shape, a steel wire rope (45) is wound outside the winding roller (441), the locking bolt (46) is located above the winch (44) and movably penetrates through the side wall of the mounting shell (41) to extend to the outside, the locking bolt (46) is movably clamped in the locking tooth (4421), and the lower end of the steel wire rope (45) is fixedly connected with the lifting hook (5).

2. A manually operated length-adjustable hoist according to claim 1, characterized in that The mounting shell (41) is integrally provided as a "U" shaped structure, and the fixed seat (411) is integrally cast with the mounting shell (41).

3. A manually operated length-adjustable hoist according to claim 1, characterized in that, The locking tooth (4421) is provided as a circular groove matched with the diameter of the locking bolt (46), and the locking teeth (4421) on the two chucks (442) are aligned.

4. A manually operated length-adjustable hoist according to claim 3, characterized in that The locking bolt (46) is provided as a nail structure with a flat head at one end and a sharp head at the other end, the sharp end of the locking bolt (46) is fixedly provided with a limiting hole (461), and the limiting hole (461) movably clamps a limiting bolt (47).

5. A manually operated length-adjustable hoist according to claim 1, characterized in that, The mounting shell (41) is fixedly installed with two supporting rods (412) at the lower end inside.

6. A manually operated length-adjustable hoist according to claim 5, characterized in that The adjusting roller (48) is movably installed on the two supporting rods (412), the adjusting roller (48) is provided with a limiting groove (481) corresponding to the steel wire rope (45) outside, and the limiting groove (481) is in the shape of an arc matched with the cross section of the steel wire rope (45).

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