阅读说明：本技术 一种带载大范围升降的吊装机构及吊车 (Hoisting mechanism and crane that area carried and gone up and down on a large scale ) 是由 林绍勇 杜啸 毕暕雨 张东雪 李广元 于 2021-08-16 设计创作，主要内容包括：本发明涉及一种带载大范围升降的吊装机构及吊车。一种带载大范围升降的吊装机构,包括折臂缸、变幅缸、依次铰接的基座、折臂和基本臂,折臂缸两端分别与基座和折臂铰接,变幅缸两端分别与基座和基本臂铰接。一种带载大范围升降的吊车,包括带载大范围升降的吊装机构。本发明基本臂俯仰过程变幅缸均有较大的动力臂,折臂与变幅缸夹角小,折臂缸和变幅缸出力小,可以实现带载大范围升降。(The invention relates to a hoisting mechanism capable of lifting in a large range with load and a crane. The hoisting mechanism comprises an arm folding cylinder, an amplitude cylinder, a base, a folding arm and a basic arm, wherein the base, the folding arm and the basic arm are sequentially hinged, two ends of the arm folding cylinder are respectively hinged with the base and the folding arm, and two ends of the amplitude cylinder are respectively hinged with the base and the basic arm. A crane capable of lifting in a large range with load comprises a lifting mechanism capable of lifting in a large range with load. The luffing cylinders of the basic arm pitching process have larger power arms, the included angle between the folding arm and the luffing cylinder is small, the output of the folding arm cylinder and the luffing cylinder is small, and the large-range lifting with load can be realized.)

1. The hoisting mechanism capable of lifting in a large range with load is characterized by comprising an arm folding cylinder, an amplitude cylinder, a base, an arm folding cylinder and a basic arm, wherein the base, the arm folding cylinder and the basic arm are sequentially hinged, two ends of the arm folding cylinder are respectively hinged with the base and the arm folding cylinder, and two ends of the amplitude cylinder are respectively hinged with the base and the basic arm.

2. A hoisting mechanism with large-scale hoisting and lowering functions as claimed in claim 1, wherein the base and the folding arm are provided with grooves, and the base arm is disposed in the grooves in the retracted state.

3. A hoisting mechanism with large-scale lifting and lowering functions as claimed in claim 2, wherein the hinge point of the folding arm and the base arm is lower than the bottom surface of the base in the retracted state.

4. A crane with large-scale load lifting as claimed in any one of claims 1 to 3, comprising lifting means with large-scale load lifting.

Technical Field

The invention relates to a hoisting mechanism with large-range lifting and dropping and a crane, belonging to the field of hoisting machinery.

Background

In the hoisting process, the traditional hoisting arm is limited by a mechanism, the height of the front end of the hoisting arm greatly affects the power arm of the oil cylinder, the front end of the hoisting arm can bear the load only by reaching a certain height, the winch drives the steel wire rope to hoist the goods, and the length of the steel wire rope causes the goods to rock. If the front end of the lifting arm can bear loads at different heights, a winch can be omitted, and the lifting arm is hoisted by adopting a short steel wire rope with a fixed length or a hard connection mode, so that the shaking of goods is reduced. How to realize a hoisting mechanism with large-range load lifting is a technical problem to be solved by technical personnel in the field.

Disclosure of Invention

In order to solve the problems, the invention provides a hoisting mechanism and a crane which can be lifted in a large range with loads.

The hoisting mechanism comprises an arm folding cylinder, an amplitude cylinder, a base, a folding arm and a basic arm, wherein the base, the folding arm and the basic arm are sequentially hinged, two ends of the arm folding cylinder are respectively hinged with the base and the folding arm, and two ends of the amplitude cylinder are respectively hinged with the base and the basic arm.

Grooves are formed in the base and the folding arms, and the basic arm is arranged in the groove in a folded state; reducing the stowed state height.

When in a folded state, the connecting hinge point of the folding arm and the basic arm is lower than the bottom surface of the base; and a power arm of the amplitude variation cylinder in a retracting state is added.

A crane capable of lifting in a large range with load comprises a lifting mechanism capable of lifting in a large range with load.

Advantageous effects of the invention

The hoisting mechanism adopts the technical scheme that a base, a folding arm and a basic arm are sequentially hinged, and the movement position of the basic arm is accurately controlled by controlling the movement positions of a folding arm cylinder and a variable amplitude cylinder; when the folding mechanism is folded, the folding arm and the amplitude cylinder both tilt backwards, and the folding arm cylinder pulls the folding arm forwards and upwards from the base, so that the overall height of the folding state mechanism is reduced; when the mechanism is unfolded, the luffing cylinders have larger power arms in the pitching process of the basic arm, and the included angle between the folding arm and the luffing cylinder is small, so that the small force exerted by the folding arm cylinder and the luffing cylinder is ensured, and therefore large-range lifting with load can be realized.

Drawings

FIG. 1 is a schematic view of a hoisting mechanism with large-scale lifting and lowering load in a retracted state;

FIG. 2 is a working state diagram of a hoisting mechanism with load lifting in a large range;

FIG. 3 is a schematic view of a hoisting mechanism with large-scale lifting and lowering load when the hoisting mechanism falls down or lifts a heavy object;

FIG. 4 is a schematic view of a crane in a driving state with a large-scale lifting and lowering load;

FIG. 5 is a diagram showing the working state of a crane with a large-scale load lifting and lowering function;

fig. 6 is a schematic view of a crane with a large-scale lifting and lowering load when the crane falls down or lifts a heavy object.

Detailed Description

The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown and described, and which fall within the scope of the invention.

As shown in fig. 1-3, a hoisting mechanism with large-scale load lifting comprises a base 1, a folding arm cylinder 2, a folding arm 3, a variable amplitude cylinder 4 and a basic arm 5. The base 1, the folding arm 3 and the basic arm 5 are connected through the pin shaft 6 in sequence, the two ends of the folding arm cylinder 2 are connected to the base 1 and the folding arm 3 through the pin shaft 6, the two ends of the variable amplitude cylinder 4 are connected to the base 1 and the basic arm 5 through the pin shaft 6, and the movement positions of the folding arm cylinder 2 and the variable amplitude cylinder 4 are controlled to accurately control the movement position of the basic arm 5. When the folding arm is folded, the folding arm cylinder 2 extends out to drive the folding arm 3 to rotate backwards, the amplitude variation cylinder 4 retracts to drive the basic arm 5 to fall down, the folding arm 3 and the amplitude variation cylinder 4 both incline backwards, the folding arm cylinder 2 pulls the folding arm 3 from the base 1 to the front upper direction, and the basic arm 5 falls into the base 1 and the top surface of the folding arm cylinder 2 to be provided with a groove 7, so that the height in a folded state is reduced; at this time, the connecting hinge point of the knuckle arm 3 and the base arm 5 is lower than the bottom surface of the base 1, and the power arm of the luffing cylinder 4 in the stowed state can be increased. When in lifting, the arm folding cylinder 2 retracts to drive the arm folding 3 to rotate forwards, and the amplitude changing cylinder 4 extends out to drive the front end of the basic arm 5 to rise, so that the large-range lifting with load can be realized. When a heavy object is dropped, the arm folding cylinder 2 extends out to drive the arm folding 3 to rotate backwards, and the amplitude changing cylinder 4 retracts to drive the front end of the basic arm 5 to drop.

As shown in figures 4-6, the crane with large-scale load lifting comprises a hoisting mechanism with large-scale load lifting, which is arranged on a crane chassis 8 through a rotary support 10, and a telescopic arm 9 is arranged in a basic arm 5 through a sliding block. When in lifting, the arm folding cylinder 2 retracts to drive the arm folding 3 to rotate forwards, the telescopic arm 9 extends out, the amplitude variation cylinder 4 extends out to drive the basic arm 5 to rise after the front end of the telescopic arm is connected with a heavy object, the rotary support 10 is started, and the heavy object is lifted to a specified position. The amplitude cylinder 4 retracts to drive the basic arm 5 to fall, and the arm folding cylinder 2 and the telescopic arm 9 are matched with the basic arm 5 to extend in a coordinated mode, so that the heavy objects are guaranteed to fall vertically.