CN219311296U

CN219311296U - Linkage type arch centering handle

Info

Publication number: CN219311296U
Application number: CN202320771509.0U
Authority: CN
Inventors: 常松帅; 王江涛; 李孟辉; 彭孟阳
Original assignee: Henan Gengli Engineering Equipment Co ltd
Current assignee: Henan Gengli Engineering Equipment Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-07-07
Anticipated expiration: 2033-04-10

Abstract

The utility model provides a linkage formula bow member tongs, relates to mechanical tongs technical field, including fixing base, short connecting rod and removal cover, the terminal side of fixing base is connected with movable jaw through round pin axle rotation, and movable jaw's clamping end articulates there is the jaw head, movable jaw's bottom articulates there is hydraulic cylinder, the both ends of short connecting rod are connected with movable jaw and removal cover rotation respectively through round pin axle two, the medial hole of removal cover is inlayed and is had lubricated bush, and the side of lubricated bush is fixed with the baffle ring, the baffle ring passes through the bolt fastening and is sheathe in at the removal, the lubrication bush is connected with the guiding axle at fixing base both ends sliding from top to bottom, and this linkage formula bow member tongs realize clamping the clamping or unclamping action of grabbing the head through link mechanism, and centering is good, and centre gripping bow member is safe and reliable.

Description

Linkage type arch centering handle

Technical Field

The utility model relates to the technical field of mechanical grippers, in particular to a linkage type arch centering gripper.

Background

At present, two types of tunnel steel arch installing trolleys grasp and lift arches, one type of tunnel steel arch installing trolleys grasp and lift by means of hydraulic mechanical grippers, and the other type of tunnel steel arch installing trolleys grasp and lift by means of a winch in cooperation with a supporting arm. In the prior art, the two clamping claws of the mechanical clamping hand do not have linkage, can swing back and forth, have poor centering and easily cause unstable clamping of the steel arch to cause falling accidents.

Disclosure of Invention

The utility model aims to overcome the existing defects, and provides the linkage type arch centering gripper which can realize the clamping or loosening action of the clamping head through the connecting rod mechanism, has good centering, is safe and reliable for clamping the arch centering and can effectively solve the problems in the background technology.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

the utility model provides a linkage formula bow member tongs, includes fixing base, short connecting rod and removal cover, the terminal side of fixing base is connected with movable jaw through a round pin axle rotation, and movable jaw's clamping end articulates there is the jaw head, movable jaw's bottom articulates there is hydraulic cylinder, the both ends of short connecting rod rotate with movable jaw and removal cover respectively through a round pin axle two and be connected, the medial hole of removal cover is inlayed and is had lubricated bush, and the side of lubricated bush is fixed with the baffle ring, the baffle ring is fixed on removing the cover through the bolt fastening, sliding connection about the guiding axle at lubricated bush and fixing base both ends.

Further, the movable claw is of an L-shaped structure.

Further, anti-skid patterns are arranged on the clamping surfaces of the jaw heads.

Compared with the prior art, the utility model has the beneficial effects that: the linkage type arch centering handle has the following advantages:

1. the clamping jaw linkage is realized through the connecting rod mechanism, the phenomenon that the clamping is unstable and easy to shake when the gripper lifts the arch frame is avoided, the centering is good, and the clamping stability of the gripper is improved.

2. The clamping head can swing in a small amplitude, the contact area between the clamping head and the arch frame can be increased, and the anti-skid patterns are arranged to increase the friction force between the clamping surface and the arch frame, so that the clamping is firmer.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view showing the open state of the movable claws according to the present utility model;

FIG. 3 is a partial schematic view of the movable jaw open state of the present utility model;

FIG. 4 is a schematic view of a partial structure of a guide shaft according to the present utility model;

fig. 5 is a schematic cross-sectional structure of the present utility model.

In the figure: the device comprises a fixed seat 1, a guide shaft 1.1, a movable claw 2, a claw head 3, a hydraulic cylinder 4, a short connecting rod 5, a movable sleeve 6, a lubrication bushing 7, a baffle ring 8, a bolt 9, a pin shaft 10I and a pin shaft 11 II.

Detailed Description

The utility model will be explained in detail by the following examples, the purpose of which is to be disclosed in order to protect all technical improvements within the scope of the utility model.

Referring to fig. 1-5, the present embodiment provides a technical solution: the utility model provides a linkage formula bow member tongs, including fixing base 1, short connecting rod 5 and removal cover 6, the end side of fixing base 1 is connected with movable jaw 2 through round pin axle one 10 rotation, movable jaw 2's clamping end articulates there is jaw head 3, movable jaw 2's bottom articulates there is hydraulic cylinder 4, the both ends of short connecting rod 5 are connected with movable jaw 2 and removal cover 6 rotation respectively through round pin axle two 11, the medial hole intussuseption of removal cover 6 has connect lubricated bush 7, lubricated bush 7's side is fixed with baffle ring 8, baffle ring 8 passes through bolt 9 to be fixed on removal cover 6, lubricated bush 7 and the guiding axle 1.1 at fixing base 1 both ends are from top to bottom sliding connection, movable jaw 2 is "L" structure, the jar pole of hydraulic cylinder 4 is when the withdrawal, its tip drives movable jaw 2 outwards swings around round pin axle one 10, the outside swing drives short connecting rod 5 and upwards moves, and then drive removal cover 6 and upwards move along guiding axle 1.1, the direction of movement of hydraulic cylinder 4 is contrary to the above-mentioned when the jar pole stretches out, because guiding axle 1.1 limits the left and right side of movable jaw 6 and guiding axle 1.1 and the guide axle 1 and the different direction of movement of movable jaw 2 are not swing, the steady grip 2 has been realized simultaneously, the steady grip 2 is different and swing, the steady hand swing phenomenon is realized, and the clamping steady hand is not shaking, and the opposite hand is realized, and the clamping steady hand is stable when the opposite hand has been realized.

The clamping surface of the claw head 3 is provided with anti-skid patterns, the claw head 3 can swing in a small amplitude, the contact area with the arch frame can be increased, and the friction force between the clamping surface and the arch frame is increased by the anti-skid patterns, so that the clamping is firmer.

The working principle of the linkage type arch centering gripper provided by the utility model is as follows: when the cylinder rod of the hydraulic cylinder 4 is retracted, the end part of the cylinder rod drives the movable claw 2 to swing outwards around the pin shaft I10, and simultaneously drives the short connecting rod 5 to move upwards while the movable claw 2 swings outwards, so as to drive the movable sleeve 6 to move upwards along the guide shaft 1.1, and the movement direction of the cylinder rod of the hydraulic cylinder 4 is opposite to the movement direction when the cylinder rod of the hydraulic cylinder 4 extends out, and the guide shaft 1.1 limits the left-right displacement of the movable sleeve 6, so that the two movable claws 2 cannot swing randomly in the same direction, and the two movable claws 2 always swing in the same speed and opposite direction.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a linkage formula bow member tongs, includes fixing base (1), short connecting rod (5) and removes cover (6), its characterized in that: the end side of fixing base (1) is connected with movable claw (2) through round pin axle one (10) rotation, and the clamping end of movable claw (2) articulates there is claw head (3), the bottom of movable claw (2) articulates there is hydraulic cylinder (4), the both ends of short connecting rod (5) are connected with movable claw (2) and removal cover (6) rotation respectively through round pin axle two (11), the medial hole of removal cover (6) is inlayed and is had lubricated bush (7), and the side of lubricated bush (7) is fixed with keeps off ring (8), keep off ring (8) and pass through bolt (9) to be fixed on removal cover (6), lubricated bush (7) and guiding axle (1.1) at fixing base (1) both ends from top to bottom sliding connection.

2. A linked arch gripper as recited in claim 1, wherein: the movable claw (2) is of an L-shaped structure.

3. A linked arch gripper as recited in claim 1, wherein: the clamping surface of the jaw head (3) is provided with anti-skid patterns.