Lifting mechanism of a climbing column machine for bridge piers

Abstract

The present invention provides a lifting mechanism for a climbing column machine of a bridge pier column, which includes a mounting frame, a first cylinder, a second cylinder, a sliding member, a connecting frame and a friction plate; the sliding member is slidably connected to the mounting frame; the connecting frame is sequentially provided with a first connecting portion, a second connecting portion, a third connecting portion and a fourth connecting portion from front to back; the third connecting portion is hinged to the sliding member; the first cylinder is fixed on the mounting frame and the power output end is hinged to the first connecting portion to drive the first connecting portion to lift; the second cylinder is fixed on the sliding member and the power output end is hinged to the second connecting portion; the friction plate is hinged to the fourth connecting portion; it is reflected that the present invention can stably drive the climbing column machine to lift on the pier column.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction equipment, and particularly relates to a lifting mechanism of a climbing column machine for bridge piers. Background Art

[0002] In the past, the lifting mechanism of a climbing column machine for bridge piers adopted a method of driving rollers to rotate by a motor. The rollers pressed against the outer wall of the bridge pier and rotated, thereby achieving the lifting effect. However, this method requires a large frictional force between the rollers and the pier to achieve climbing, and it is very difficult to control the vertical lifting due to the elastic deformation of the rollers after bearing pressure. The actual use effect is not good. Therefore, the lifting mechanism still needs to be improved. Summary of the Invention

[0003] The purpose of the present invention is to provide a lifting mechanism of a climbing column machine for bridge piers to solve the problems mentioned in the background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A lifting mechanism of a climbing column machine for bridge piers includes a mounting frame, a first cylinder, a second cylinder, a sliding member, a connecting frame and a friction plate; the sliding member is slidably connected to the mounting frame; the connecting frame is sequentially provided with a first connecting portion, a second connecting portion, a third connecting portion and a fourth connecting portion from front to back; the third connecting portion is hinged to the sliding member; the first cylinder is fixed on the mounting frame and the power output end is hinged to the first connecting portion to drive the first connecting portion to lift; the second cylinder is fixed on the sliding member and the power output end is hinged to the second connecting portion; the friction plate is hinged to the fourth connecting portion.

[0006] For a further description of the present invention, the mounting frame is a square frame structure; the sliding member is sleeved and slidably connected to the column on the rear side of the mounting frame; the first cylinder is fixed at the top inside the mounting frame; the second cylinder is fixed on the front side of the sliding member; the third connecting portion is hinged to the rear side of the sliding member.

[0007] For a further description of the present invention, a first connecting ear is provided below the front side of the sliding member on the connecting frame; a second connecting ear is provided above the rear side of the sliding member on the connecting frame; the second connecting portion is arranged at the position of the first connecting ear; the third connecting portion is arranged at the position of the second connecting ear.

[0008] The beneficial effects of the present invention are:

[0009] A number of lifting mechanisms are installed on a climbing column machine for bridge piers. The lifting mechanisms are divided into two groups, and the two groups of lifting mechanisms work alternately to achieve the lifting function. One group of lifting mechanisms operates synchronously. When the second connecting part of the connecting frame is pushed downward by the second cylinder, the connecting frame rotates around the position of the third connecting part, driving the rear end of the connecting frame to move upward. The friction plate is pressed against the outer wall of the pier column. When the first cylinder pushes the connecting frame, the first cylinder drives the mounting frame to move upward, and the mounting frame drives the entire climbing column machine for bridge piers to move upward, while the sliding part slides downward relative to the mounting frame. After the first cylinder is fully extended, the other group of lifting mechanisms works to continue the upward movement, and this group of lifting mechanisms is reset to prepare for the next climbing operation. When controlling the descent, after the first cylinder is extended, the second cylinder controls the friction plate to hold the pier column tightly, and the retraction process of the first cylinder can control the descent of the climbing column machine. This setting can stably hold the pier column for lifting and lowering actions. Brief Description of the Drawings

[0010] Figure 1 is the overall structure diagram of the present invention;

[0011] Figure 2 is the schematic diagram of the climbing column machine of the present invention installed with a lifting mechanism. Detailed Embodiment

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] As Figure 1-2As shown in the figure, a lifting mechanism 100 of a bridge pier climbing machine includes a mounting frame 1, a first cylinder 2, a second cylinder 3, a sliding member 4, a connecting frame 5 and a friction plate 6; the sliding member 4 is slidably connected to the mounting frame 1; the connecting frame 5 is sequentially provided with a first connecting portion 51, a second connecting portion 52, a third connecting portion 53 and a fourth connecting portion 54 from front to back; the third connecting portion 53 is hinged to the sliding member 4; the first cylinder 2 is fixed on the mounting frame 1 and the power output end is hinged to the first connecting portion 51 to drive the first connecting portion 51 to lift; the second cylinder 3 is fixed on the sliding member 4 and the power output end is hinged to the second connecting portion 52; the friction plate 6 is hinged to the fourth connecting portion 54; a plurality of lifting mechanisms 100 are installed on a bridge pier climbing machine 300, and the lifting mechanisms 100 are divided into two groups, and the two groups of lifting mechanisms 100 work alternately to achieve the lifting function. In this embodiment, taking eight lifting mechanisms 100 as an example, four lifting mechanisms 100 are in one group, and every other lifting mechanism 100 is divided into the same group to improve the stability during work. One group of lifting mechanisms 100 is the lifting mechanism one 101, and the other group is the lifting mechanism two 102. The lifting mechanisms 100 in the same group work synchronously, and the two groups of lifting mechanisms 100 work alternately; wherein the connecting frame 5 of the lifting mechanism 100 is in a state of inclining from the front upper part to the back lower part, and the friction plate 6 faces the pier 200, and the mounting frame 1 is fixed on the frame of the bridge pier climbing machine 300.

[0014] When realizing the rising function, the first cylinders 2 of the two groups of lifting mechanisms 100 are both in the retracted state. The lifting mechanism one 101 operates. When the second cylinder 3 pushes the second connecting portion 52 of the connecting frame 5 downward, the connecting frame 5 rotates around the position of the third connecting portion 53, driving the rear end of the connecting frame 5 to move upward. The friction plate 6 is pressed against the outer wall of the pier 200. When the first cylinder 2 pushes the connecting frame 5, the first cylinder 2 drives the mounting frame 1 to move upward, and the mounting frame 1 drives the whole bridge pier climbing machine 300 to move upward, and the sliding member 4 slides downward relative to the mounting frame 1. When the first cylinder 2 is fully extended, the lifting mechanism two 102 works to continue to realize the rising action. The second cylinder 3 of the lifting mechanism one 101 retracts, so that the friction plate 6 loosens the pier 200, and the first cylinder 2 retracts and resets to prepare for the next climbing work.

[0015] When controlling the descent, different from controlling the ascent, after the first cylinder 2 is extended, the second cylinder 3 controls the friction plate 6 to hold the pier 200 tightly, and the retraction process of the first cylinder 2 can control the climbing machine 300 to descend.

[0016] In this design, the mounting frame 1 is of a square frame structure; the sliding member 4 is sleeved and slidably connected to the column on the rear side of the mounting frame 1; the first cylinder 2 is fixed at the top inside the mounting frame 1; the second cylinder 3 is fixed on the front side of the sliding member 4; the third connecting portion 53 is hinged to the rear side of the sliding member 4.

[0017] A first connecting ear 501 is provided below the front side of the sliding member 4 on the connecting frame 5; a second connecting ear 502 is provided above the rear side of the sliding member 4 on the connecting frame 5; the second connecting portion 52 is disposed at the position of the first connecting ear 501; the third connecting portion 53 is disposed at the position of the second connecting ear 502; the inclination angle of the connecting frame 5 is determined by the positions of the second connecting portion 52 and the third connecting portion 53. This setting increases the distance between the second connecting portion 52 and the third connecting portion 53, better adjusts the angle of the connecting frame 5, and also improves the force of the friction plate 6 to hold the pier column 200.

[0018] The working principle of this embodiment is as follows:

[0019] When realizing the rising function, the first cylinders 2 of the two lifting mechanisms 100 are both in the retracted state. When the lifting mechanism one 101 operates and the second cylinder 3 pushes the second connecting portion 52 of the connecting frame 5 downward, the connecting frame 5 rotates around the position of the third connecting portion 53, driving the rear end of the connecting frame 5 upward. The friction plate 6 is pressed against the outer wall of the pier column 200. When the first cylinder 2 pushes the connecting frame 5, the first cylinder 2 drives the mounting frame 1 upward, and the mounting frame 1 drives the bridge pier column climbing machine 300 as a whole upward. The sliding member 4 slides downward relative to the mounting frame 1. When the first cylinder 2 is fully extended, the lifting mechanism two 102 works to continue the rising action. The second cylinder 3 of the lifting mechanism one 101 retracts, causing the friction plate 6 to release the pier column 200, and then the first cylinder 2 retracts and resets to prepare for the next climbing work.

[0020] When controlling the descent, different from controlling the ascent, after the first cylinder 2 is extended, the second cylinder 3 controls the friction plate 6 to hold the pier column 200, and the retraction process of the first cylinder 2 can control the descent of the climbing machine 300.

[0021] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A lifting mechanism of a climbing column machine for bridge piers, characterized in that: The lifting mechanism is divided into two groups for alternating operation; the lifting mechanism includes a mounting frame, a first cylinder, a second cylinder, a sliding member, a connecting frame and a friction plate; the sliding member is slidably connected to the mounting frame; the connecting frame is sequentially provided with a first connecting portion, a second connecting portion, a third connecting portion and a fourth connecting portion from front to back; the third connecting portion is hinged to the sliding member; the first cylinder is fixed on the mounting frame and the power output end is hinged to the first connecting portion to drive the first connecting portion to lift; the second cylinder is fixed on the sliding member and the power output end is hinged to the second connecting portion; the friction plate is hinged to the fourth connecting portion; the mounting frame is a square frame structure; the sliding member is sleeved and slidably connected to the column on the rear side of the mounting frame; the first cylinder is fixed at the top inside the mounting frame; the second cylinder is fixed on the front side of the sliding member; the third connecting portion is hinged to the rear side of the sliding member; a first connecting ear is provided below the front side of the sliding member corresponding to the connecting frame; a second connecting ear is provided above the rear side of the sliding member corresponding to the connecting frame; the second connecting portion is arranged at the position of the first connecting ear; the third connecting portion is arranged at the position of the second connecting ear.

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