A release pulley linkage

Abstract

The utility model discloses an unlocking pulley connecting rod mechanism, including positioning sliding block, slide rail, unlocking pulley, positioning bolt, sliding pin, waist shape limit slot and unlocking connecting rod, the waist shape limit slot is set up in the lifting machine stand column side, the unlocking connecting rod one end is hinged with positioning bolt, the positioning bolt fixed connection is in the lifting machine stand column outside, unlocking connecting rod one side is set up with the sliding slot, the slide rail and positioning sliding block vertical sliding connection, the positioning sliding block is fixedly connected in the lifting machine stand column outside through the support, the sliding pin fixed connection is in the slide rail bottom, the sliding pin one end extends and inserts in the sliding groove and slides, the sliding pin other end extends and inserts in the waist shape limit slot and slides, the unlocking pulley is set up in the lifting machine stand column inside and is rotatively connected with the sliding pin, through the cooperation of unlocking connecting rod, positioning sliding block, sliding pin and slide rail, make unlocking pulley only linear motion along the slide rail, and then enhance the stability of unlocking pulley.

Description

Technical Field

[0001] This utility model relates to the field of two-column lift technology, and in particular to an unlocking pulley linkage mechanism. Background Technology

[0002] Currently, most twin-post lifts have a single-sided unlocking structure. When unlocking the lifting arm inside the column, the operator does not need to walk to the other column to unlock it again, which improves the convenience of use. However, most existing unlocking structures are linkage mechanisms, which require multiple linkages to move together. After long-term use, the hinge points of the linkage mechanism are prone to wear and tear, causing play. This makes the unlocking pulley prone to friction damage with the lift column during unlocking. Therefore, an unlocking pulley linkage mechanism was designed to solve the above problems. Utility Model Content

[0003] To address the shortcomings of existing two-post lifts, the purpose of this invention is to provide an unlocking pulley linkage mechanism, which has advantages such as reducing the number of linkages and enhancing the stability of the unlocking pulley movement.

[0004] To achieve the above objectives, the present invention employs the following technical solution: an unlocking pulley linkage mechanism, comprising a positioning slider, a slide rail, an unlocking pulley, a positioning bolt, a sliding pin, a waist-shaped limiting groove, and an unlocking linkage. The waist-shaped limiting groove is formed on the side of the lift column. One end of the unlocking linkage is hinged to the positioning bolt, which is fixedly connected to the outside of the lift column. A sliding groove is formed on the side of the unlocking linkage near the positioning bolt. The slide rail and the positioning slider are vertically slidably connected. The positioning slider is fixedly connected to the outside of the lift column via a bracket. The sliding pin is fixedly connected to the bottom of the slide rail. One end of the sliding pin extends and slides within the sliding groove, and the other end extends and slides within the waist-shaped limiting groove. The unlocking pulley is disposed on the inside of the lift column and rotatably connected to the sliding pin. Preferably, the other end of the unlocking linkage is rotatably connected to an unlocking handle, and the rotation axis of the unlocking handle is parallel to the rotation axis of the unlocking linkage; Preferably, the sliding pin axis is perpendicular to the sliding path of the slide rail; Preferably, a guide rope is wound around the outer edge of the unlocking pulley, and the outer edge of the unlocking pulley has an L-shaped baffle for preventing the guide rope from coming off. Preferably, the slider and the slide rail are further provided with a detachable protective baffle on the outside; Preferably, the waist-shaped limiting groove is used to limit the sliding distance of the slide rail; The beneficial effects of this utility model are: 1. When the unlocking linkage is pulled to unlock, the unlocking pulley can only move in a straight line along the movement path of the slide rail through the cooperation of the unlocking linkage, positioning slider, sliding pin and slide rail, thereby enhancing the movement stability of the unlocking pulley; 2. Through the cooperation of the sliding groove and sliding pin in the middle of the unlocking linkage, the sliding groove can compensate for the arc movement during the swing process when the unlocking linkage is pulled to drive the slide rail to slide, thus saving the number of linkages while ensuring the directional movement of the unlocking pulley and amplifying the torque. Attached Figure Description

[0005] Figure 1 This is a view of the combined structure of this utility model; Figure 2 , 3 This is a three-dimensional structural view of the present invention in its installed state; Figure 4 This utility model Figure 2 A magnified view of a portion of region I; Figure 5 This utility model Figure 3 A magnified view of a portion of region II. Detailed Implementation

[0006] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0007] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0008] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "equipped with," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0009] Please see Figures 1 to 5 The embodiments of this utility model include: A three-bar linkage mechanism for unlocking pulleys includes a positioning slider 1, a slide rail 2, an unlocking pulley 3, a positioning bolt 4, a sliding pin 5, a waist-shaped limiting groove 6, and an unlocking link 7. The waist-shaped limiting groove 6 is formed on the side of the lift column. One end of the unlocking link 7 is hinged to the positioning bolt 4, which is fixedly connected to the outside of the lift column. A sliding groove 71 is formed on the side of the unlocking link 7 near the positioning bolt 4. The slide rail 2 and the positioning slider 1 are vertically slidably connected. The positioning slider 1 is fixedly connected to the outside of the lift column by a bracket. The sliding pin 5 is fixedly connected to the bottom of the slide rail 2. One end of the sliding pin 5 extends and slides into the sliding groove 71, and the other end extends and slides into the waist-shaped limiting groove 6. The unlocking pulley 3 is disposed on the inside of the lift column and is rotatably connected to the sliding pin 5. The other end of the unlocking linkage 7 is also rotatably connected to an unlocking handle 8, and the axis of rotation of the unlocking handle 8 is parallel to the axis of rotation of the unlocking linkage 7. The sliding pin 5 is axially perpendicular to the sliding path of the slide rail 2; The outer edge of the unlocking pulley 3 is wound with a guide rope, and the outer edge of the unlocking pulley 3 has an L-shaped baffle 9 for preventing the guide rope from coming off. The slider and slide rail 2 are also provided with a detachable protective baffle on the outside; The waist-shaped limiting groove 6 is used to limit the sliding distance of the slide rail 2; With the above settings, its specific working principle in actual operation is as follows: When the unlocking linkage 7 is pulled to unlock, the unlocking linkage 7, the positioning slider 1, the sliding pin 5 and the slide rail 2 work together to make the unlocking pulley 3 move in a straight line along the movement path of the slide rail 2, thereby enhancing the movement stability of the unlocking pulley 3. By using the sliding groove 71 and sliding pin 5 in the middle of the unlocking link 7, the sliding groove 71 can compensate for the arc motion during the swing process when the unlocking link 7 drives the slide rail 2 to slide. This ensures the directional movement of the unlocking pulley 3 and amplifies the torque while saving the number of links. The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An unlocking pulley linkage mechanism, characterized in that, The system includes a positioning slider, a slide rail, an unlocking pulley, a positioning bolt, a sliding pin, a waist-shaped limiting groove, and an unlocking connecting rod. The waist-shaped limiting groove is located on the side of the lift column. One end of the unlocking connecting rod is hinged to the positioning bolt, which is fixedly connected to the outside of the lift column. A sliding groove is provided on the side of the unlocking connecting rod near the positioning bolt. The slide rail and the positioning slider are vertically slidably connected. The positioning slider is fixedly connected to the outside of the lift column via a bracket. The sliding pin is fixedly connected to the bottom of the slide rail. One end of the sliding pin extends and slides within the sliding groove, and the other end extends and slides within the waist-shaped limiting groove. The unlocking pulley is located on the inside of the lift column and is rotatably connected to the sliding pin.

2. The unlocking pulley linkage mechanism according to claim 1, characterized in that, The other end of the unlocking linkage is also rotatably connected to an unlocking handle, and the rotation axis of the unlocking handle is parallel to the rotation axis of the unlocking linkage.

3. The unlocking pulley linkage mechanism according to claim 1, characterized in that, The sliding pin axis is perpendicular to the sliding path of the slide rail.

4. The unlocking pulley linkage mechanism according to claim 1, characterized in that, The unlocking pulley has a guide rope wound around its outer edge, and the outer edge of the unlocking pulley has an L-shaped baffle to prevent the guide rope from coming off.

5. The unlocking pulley linkage mechanism according to claim 1, characterized in that, The slider and slide rail are also equipped with a removable protective baffle.

6. The unlocking pulley linkage mechanism according to claim 1, characterized in that, The waist-shaped limiting groove is used to limit the sliding distance of the slide rail.

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