CN111362127B - Novel lifting appliance with self-locking function - Google Patents

Abstract

The invention discloses a novel lifting appliance with a self-locking function, which comprises a lifting arm, a connecting rod I and a connecting rod II, wherein one end of the connecting rod I is connected with one end of the connecting rod II, the end part of the lifting arm is hinged with a connecting point of the connecting rod I and the connecting rod II, the connecting rod II is of a three-connecting-end structure, the other two connecting ends of the connecting rod II are respectively connected with one end of a screw rod and one end of a lower lifting hook, the other end of the connecting rod I is connected with one end of a lifting hook, the middle part of the lifting hook is hinged with the middle part of the lower lifting hook, the other end of the lifting hook and the other end of the lower lifting hook form a jaw, the lifting hook and the lower lifting hook form a cross type scissor lock structure, and the middle part of the lifting arm is fixedly connected with the upper end of the screw rod through a connecting piece. The device uses the cross-shaped scissor lock structure to match with the two connecting rods, so that the problems of unbalanced slipping, workpiece falling and the like in the production process can be well solved, the smooth completion of clamping, locking, lifting and transferring of the workpiece is realized, the safety and the high efficiency are realized, and the labor intensity of workers is reduced.

Description

A new type of lifting device with self-locking function

Technical Field

The invention relates to the technical field of slings, and in particular to a novel sling with a self-locking function.

Background Art

In the production and processing of products in the slewing bearing manufacturing industry, there are always tasks such as lifting and operating annular parts. The commonly used lifting method is to use two hooks to hook and lift the workpiece under the outer circle of the opposite point. This method is not easy to master the balance of the hoisted workpiece, and it is easy to cause unsafe situations such as weight slippage and workpiece falling. In the case of frequent use of balancing cranes, the phenomenon of workpiece slippage often occurs, which seriously affects the quality of product bumps, deformations, etc., and the hidden dangers in production safety are difficult to eliminate.

Summary of the invention

The purpose of the present invention is to provide a new type of sling with a self-locking function to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a new type of sling with a self-locking function, including a boom, a connecting rod I and a connecting rod II, one end of the connecting rod I is connected to one end of the connecting rod II, the end of the boom is hinged to the connection point of the connecting rod I and the connecting rod II, the connecting rod II is a three-connection end structure, the other two connection ends of the connecting rod II are respectively connected to the screw and one end of the lower hook, the other end of the connecting rod I is connected to one end of the hook, the middle part of the hook is hinged to the middle part of the lower hook, the other end of the hook and the other end of the lower hook form a jaw, the hook and the lower hook form a cross-type scissors lock structure, and the middle part of the boom is fixedly connected to the upper end of the screw through a connector.

Preferably, a spring is provided between the connection point between the connecting rod I and the hook and the connection point between the lower hook and the connecting rod II.

Preferably, an anti-drop hook is provided at the jaw end formed by the hook and the lower hook.

Preferably, an upper handle is installed at the connection between the lower hook and the connecting rod II, and a corresponding lower handle is installed at the same side end of the hook.

Preferably, the scissor lock structure, spring, connecting rod I and connecting rod II are each provided with two pairs, which are symmetrically installed on both sides of the screw rod and the boom.

The technical effects and advantages of the present invention are as follows: the device uses a cross-type scissor lock structure with two connecting rods to effectively solve the problems of unbalanced weight slipping, workpiece falling, etc. that occur during the production process, and achieves smooth completion of the clamping, locking, lifting, and transportation of the workpiece. It is safe and efficient, reduces the labor intensity of workers, solves the problems of bumps and scratches in the product production process, significantly improves product quality, and eliminates many years of safety hazards.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the present invention;

Fig. 2 is a schematic diagram of the operation of the present invention;

FIG3 is a schematic diagram of the structure of the scissor lock of the present invention;

FIG. 4 is a schematic diagram showing the connection between connecting rod I and connecting rod II of the present invention.

In the figure: 1-lifting arm, 2-connecting rod I, 3-connecting rod II, 4-screw rod, 5-lower hook, 6-hook, 7-jaw, 8-scissor lock structure, 9-connecting piece, 10-spring, 11-anti-unhooking, 12-upper handle, 13-lower handle.

DETAILED DESCRIPTION

In order to make the technical means for realizing the present invention, the creative features, the objectives and effects to be achieved easy to understand, the present invention is further explained below in conjunction with specific diagrams. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components.

Example 1

A new type of lifting device with a self-locking function as shown in Figures 1 to 4 includes a boom 1, a connecting rod Ⅰ2 and a connecting rod Ⅱ3, one end of the connecting rod Ⅰ2 is connected to one end of the connecting rod Ⅱ3, the end of the boom 1 is hinged to the connection point of the connecting rod Ⅰ2 and the connecting rod Ⅱ3, the connecting rod Ⅱ3 is a three-connection end structure, the other two connection ends of the connecting rod Ⅱ3 are respectively connected to a screw rod 4 and one end of a lower hook 5, the other end of the connecting rod Ⅰ2 is connected to one end of a hook 6, the middle part of the hook 6 is hinged to the middle part of the lower hook 5, the other end of the hook 6 and the other end of the lower hook 5 form a jaw 7, the hook 6 and the lower hook 5 form a cross-type scissors lock structure 8, the middle part of the boom 1 is fixedly connected to the upper end of the screw rod 4 through a connecting piece 9.

Example 2

A new type of lifting device with a self-locking function as shown in Figures 1 to 4 includes a boom 1, a connecting rod Ⅰ2 and a connecting rod Ⅱ3, one end of the connecting rod Ⅰ2 is connected to one end of the connecting rod Ⅱ3, the end of the boom 1 is hinged to the connection point of the connecting rod Ⅰ2 and the connecting rod Ⅱ3, the connecting rod Ⅱ3 is a three-connection end structure, the other two connection ends of the connecting rod Ⅱ3 are respectively connected to a screw rod 4 and one end of a lower hook 5, the other end of the connecting rod Ⅰ2 is connected to one end of a hook 6, the middle part of the hook 6 is hinged to the middle part of the lower hook 5, the other end of the hook 6 and the other end of the lower hook 5 form a jaw 7, the hook 6 and the lower hook 5 form a cross-type scissors lock structure 8, the middle part of the boom 1 is fixedly connected to the upper end of the screw rod 4 through a connecting piece 9.

Preferably, a spring 10 is provided between the connection point between the connecting rod I2 and the hook 6 and the connection point between the lower hook 5 and the connecting rod II3, and the spring 10 keeps the jaws 7 in a closed state at all times.

Preferably, an anti-drop hook 11 is provided at the end of the jaw 7 formed by the hook 6 and the lower hook 5 .

Preferably, an upper handle 12 is installed at the connection between the lower hook 5 and the connecting rod II 3, and a corresponding lower handle 13 is installed at the same side end of the hook 6, which can facilitate the user to open the jaws 7 and clamp the workpiece conveniently and quickly.

Preferably, the scissor lock structure 8, the spring 10, the connecting rod I2 and the connecting rod II3 are each provided with two pairs, which are symmetrically installed on both sides of the screw rod 4 and the boom 1 respectively.

The process flow and working principle of the present invention are as follows: the inner and outer circles and thickness direction of one side of the workpiece are clamped by the jaws 7 of the cross-type scissors lock structure 8, and the hook 6 and one end of the lower hook 5 are pressed down by the connecting rod Ⅰ2 and the connecting rod Ⅱ3 using the principle of gravity, so that the jaws 7 are locked; after locking, the screw 4 is used to adjust the angle of the boom 1 so that the lifting center of the hook coincides with the center of the product workpiece, thereby ensuring balanced and stable lifting and operation of the workpiece.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. A new type of sling with a self-locking function, comprising a boom, a connecting rod I and a connecting rod II, characterized in that: one end of the connecting rod I is connected to one end of the connecting rod II, the end of the boom is hinged to the connection point of the connecting rod I and the connecting rod II, the connecting rod II is a three-connection-end structure, the other two connection ends of the connecting rod II are respectively connected to a screw and one end of a lower hook, the other end of the connecting rod I is connected to one end of the hook, the middle part of the hook is hinged to the middle part of the lower hook, the other end of the hook and the other end of the lower hook form a jaw, the hook and the lower hook constitute a cross-type scissors lock structure, the middle part of the boom is fixedly connected to the upper end of the screw by a connecting piece, a spring is provided between the connection point of the connecting rod I and the hook and the connection point of the lower hook and the connecting rod II, and an anti-detachment hook is provided at the end of the jaw formed by the hook and the lower hook. 2. A new type of sling with a self-locking function according to claim 1, characterized in that an upper handle is installed at the connection between the lower hook and the connecting rod II, and a corresponding lower handle is installed at the same side end of the hook. 3. A new type of sling with self-locking function according to claim 1, characterized in that: the scissor lock structure, spring, connecting rod I and connecting rod II are each provided with two pairs, which are symmetrically installed on both sides of the screw rod and the boom.