阅读说明：本技术 一种折臂汽车起重机用六节伸缩臂装置 (Six-section telescopic arm device for folding arm automobile crane ) 是由 商晓恒 蔡力 马斌 武宏伟 孙文涛 张建 于 2021-09-06 设计创作，主要内容包括：本发明公布一种折臂汽车起重机用六节伸缩臂装置,属于起重工程机械领域。伸缩臂主体包括依次滑动连接的基本臂、一伸臂、二伸臂、三伸臂、四伸臂、五伸臂、六伸臂；基本臂和一伸臂之间,一伸臂和二伸臂之间,二伸臂和三伸臂之间分别安装有两个对称的油缸；三伸臂和四伸臂之间,四伸臂和五伸臂之间,五伸臂和六伸臂之间分别安装一个油缸；油缸均布在伸缩臂主体的左、右侧面和上侧面。本发明六个伸缩机构伸缩油缸对称分布,伸缩臂主体两侧受力均匀,第一、第二、第三伸缩机构采用双缸推动、推力稳定,有利于伸缩动作的平稳性和微动性；伸缩油缸在布置时遵循对称原则自下而上、由两侧向中间收束,空间利用率高,适用于在狭小空间作业的吊装要求。(The invention discloses a six-section telescopic arm device for a folding arm automobile crane, and belongs to the field of hoisting engineering machinery. The telescopic arm main body comprises a basic arm, a first extending arm, a second extending arm, a third extending arm, a fourth extending arm, a fifth extending arm and a sixth extending arm which are sequentially connected in a sliding manner; two symmetrical oil cylinders are respectively arranged between the basic arm and the first extending arm, between the first extending arm and the second extending arm, and between the second extending arm and the third extending arm; oil cylinders are respectively arranged between the three-extending arm and the four-extending arm, between the four-extending arm and the five-extending arm, and between the five-extending arm and the six-extending arm; the oil cylinders are uniformly distributed on the left side surface, the right side surface and the upper side surface of the telescopic arm main body. The six telescopic oil cylinders of the telescopic mechanism are symmetrically distributed, the stress on two sides of the telescopic arm main body is uniform, and the first, second and third telescopic mechanisms are pushed by double cylinders and have stable thrust, so that the stability and the jogging property of telescopic action are facilitated; when the telescopic oil cylinder is arranged, the telescopic oil cylinder is bundled from bottom to top and from two sides to the middle according to the symmetry principle, the space utilization rate is high, and the telescopic oil cylinder is suitable for the hoisting requirement of operation in a narrow space.)

1. A six-section telescopic arm device for a folding arm automobile crane comprises a telescopic arm main body; the method is characterized in that: the telescopic boom main body comprises a basic boom (1), a first extending boom (2), a second extending boom (3), a third extending boom (4), a fourth extending boom (5), a fifth extending boom (6) and a sixth extending boom (7) which are sequentially connected in a sliding manner; two symmetrical oil cylinders are respectively arranged between the basic arm (1) and the first extending arm (2), between the first extending arm (2) and the second extending arm (3), and between the second extending arm (3) and the third extending arm (4); oil cylinders are respectively arranged between the three-extending arm (4) and the four-extending arm (5), between the four-extending arm (5) and the five-extending arm (6), and between the five-extending arm (6) and the six-extending arm (7); the oil cylinders are uniformly distributed on the left side surface, the right side surface and the upper side surface of the telescopic arm main body.

2. The six-section telescopic boom device for the folding arm automobile crane according to claim 1, characterized in that: an extension cylinder I (8) and an extension cylinder II (9) are connected between the basic arm (1) and the extension arm (2), and the extension cylinder I (8) and the extension cylinder II (9) are symmetrically arranged on the left side surface and the right side surface of the telescopic arm main body.

3. The six-section telescopic boom device for the folding arm automobile crane according to claim 2, characterized in that: one stretch and be connected with two between arm (2) and two stretch arm (3) and stretch jar I (10), two stretch jar II (11), two stretch jar I (10), two stretch jar II (11) symmetrical arrangement are in the left and right lateral surface of flexible arm main part, two stretch jar I (10), two stretch jar II (11) and are located one and stretch jar I (8), one stretch jar II (9) upside.

4. The six-section telescopic boom device for the folding arm automobile crane according to claim 3, characterized in that: and a three-stretching cylinder I (12) and a three-stretching cylinder II (13) are connected between the two stretching arms (3) and the three stretching arms (4), the three-stretching cylinder I (12) and the three-stretching cylinder II (13) are symmetrically arranged on the left side surface and the right side surface of the telescopic arm main body, and the three-stretching cylinder I (12) and the three-stretching cylinder II (13) are positioned on the upper sides of the two-stretching cylinder I (10) and the two-stretching cylinder II (11).

5. The six-section telescopic boom device for the folding arm automobile crane according to claim 4, characterized in that: a four-stretching cylinder (14) is connected between the three-stretching arm (4) and the four-stretching arm (5), and the four-stretching cylinder (14) is located close to the right on the upper side face of the telescopic arm main body.

6. The six-section telescopic boom device for the folding arm automobile crane according to claim 5, characterized in that: and a five-extension cylinder (15) is connected between the four-extension arm (5) and the five-extension arm (6), and the five-extension cylinder (15) is positioned in the middle of the upper side surface of the telescopic arm main body.

7. The six-section telescopic boom device for the folding arm automobile crane according to claim 6, characterized in that: and a six-extension cylinder (16) is connected between the five-extension arm (6) and the six-extension arm (7), and the six-extension cylinder (16) is positioned close to the left on the upper side surface of the telescopic arm main body.

Technical Field

The invention relates to the field of hoisting engineering machinery, in particular to a six-section telescopic arm device for a folding arm automobile crane.

Background

The automobile crane is one kind of hoisting machinery and is suitable for movable hoisting operation. The conventional automobile crane is mainly used for open-air loading and unloading operation with strong mobility under the limiting conditions of large turning radius, high operation space height and the like, and the hoisting performance of the conventional automobile crane cannot be fully utilized for operation places such as workshops and tunnels with relatively narrow spaces.

On the basis of inheriting the advantage of strong mobility of a conventional automobile crane, the folding arm type automobile crane has the advantages of high space utilization rate, small turning radius, flexible action and the like, can perform construction operation in a relatively narrow space and fully exerts the hoisting performance of the folding arm type automobile crane. With the wide application of the folding arm automobile crane in the hoisting industry, the key performances of the telescopic stability, the micro-mobility and the like of the suspension arm are more and more emphasized.

The Chinese patent discloses a six-section cargo boom telescopic mechanism (CN 210635631U) of an automobile crane, which comprises a first section arm, a second section arm, a third section arm, a fourth section arm, a fifth section arm and a sixth section arm; a second-stage oil cylinder and a single-stage oil cylinder are arranged in the six-section arm; each part of the secondary oil cylinder is connected with the first-section arm, the second-section arm and the third-section arm; the single-stage oil cylinder is connected with the three-section arm and the four-section arm; a cylinder barrel and a five-section arm of the single-stage oil cylinder are provided with a five-section arm extending pulley, a five-section arm extending steel wire rope, a five-section arm retracting pulley and a five-section arm retracting steel wire rope; the five-section arm is also provided with a six-section arm extending pulley, a six-section arm extending steel wire rope, a six-section arm contracting pulley and a six-section arm contracting steel wire rope; the utility model discloses a can realize arbitrary arm length combination at arm length regulation length within range, satisfy the operation needs of hoist in narrow and small space to make jib loading boom intensity and complete machine stability reach optimum combination.

The defects of the technology are as follows:

the two sides of the arm support telescopic device are stressed unevenly, the pulling force and the pushing force which are exerted when the arm body is telescopic are uneven, the telescopic stability and the micromotion performance of the arm body are influenced, and the deflection is easily generated;

the space utilization rate of the arm body is low, and the operation in a narrow space is not facilitated.

Disclosure of Invention

In order to solve the technical problem, the invention provides a six-section telescopic arm device for a folding arm automobile crane.

The invention is realized by the following technical scheme: the six-section telescopic arm device for the folding arm automobile crane comprises a telescopic arm main body; the telescopic boom main body comprises a basic boom, a first extending boom, a second extending boom, a third extending boom, a fourth extending boom, a fifth extending boom and a sixth extending boom which are sequentially connected in a sliding manner; two symmetrical oil cylinders are respectively arranged between the basic arm and the first extending arm, between the first extending arm and the second extending arm, and between the second extending arm and the third extending arm; oil cylinders are respectively arranged between the three-extending arm and the four-extending arm, between the four-extending arm and the five-extending arm, and between the five-extending arm and the six-extending arm; the oil cylinders are uniformly distributed on the left side surface, the right side surface and the upper side surface of the telescopic arm main body.

It further comprises the following steps: and a stretching cylinder I and a stretching cylinder II are connected between the basic arm and the stretching arm and are symmetrically arranged on the left side surface and the right side surface of the stretching arm main body.

Two stretching cylinders I and two stretching cylinders II are connected between the first stretching arm and the second stretching arm, the two stretching cylinders I and the two stretching cylinders II are symmetrically arranged on the left side surface and the right side surface of the stretching arm main body, and the two stretching cylinders I and the two stretching cylinders II are positioned on the upper sides of the first stretching cylinder I and the second stretching cylinder II.

And a three-stretching cylinder I and a three-stretching cylinder II are connected between the two stretching arms and the three stretching arms, the three-stretching cylinder I and the three-stretching cylinder II are symmetrically arranged on the left side surface and the right side surface of the telescopic arm main body, and the three-stretching cylinder I and the three-stretching cylinder II are positioned on the upper sides of the two-stretching cylinder I and the two-stretching cylinder II.

And a four-stretching cylinder is connected between the three-stretching arm and the four-stretching arm and is positioned close to the right on the upper side surface of the telescopic arm main body.

And a five-extension cylinder is connected between the four-extension arm and the five-extension arm and is positioned in the middle of the upper side surface of the telescopic arm main body.

And a six-stretching cylinder is connected between the five-stretching arm and the six-stretching arm and is positioned close to the left on the upper side surface of the telescopic arm main body.

Compared with the prior art, the invention has the beneficial effects that:

the six telescopic oil cylinders of the telescopic mechanism are symmetrically distributed, and the two sides of the telescopic arm main body are uniformly stressed, so that the telescopic arm main body is prevented from being inclined when in telescopic motion; the first, second and third telescopic mechanisms are pushed by double cylinders, and the thrust is stable, so that the two sides of the telescopic arm main body are uniformly stressed, sufficient thrust can be provided for the telescopic arm main body to stretch, the stability and the jogging property of the telescopic action are facilitated, the hoisting operation can be better adapted, and the service life of the oil cylinder is prolonged;

the telescopic oil cylinder is bound from bottom to top and from two sides to the middle along the symmetry principle when being arranged, the appearance of the telescopic arm is ingeniously combined, the occupied space of the telescopic devices from the first telescopic mechanism to the sixth telescopic mechanism is gradually reduced, the overall telescopic device is in a bullet head shape, the space utilization rate is high, and the telescopic device is suitable for the hoisting requirement of operation in narrow and small space.

Drawings

FIG. 1 is a front view (retracted state) of an embodiment of the present invention;

FIG. 2 is a left side view of the invention (retracted state);

FIG. 3 is a top view (extended state) of FIG. 2;

in the figure: 1. a base arm; 2. an extending arm; 3. two extending arms; 4. a three-extending arm; 5. a four-extending arm; 6. five extending arms; 7. a six-extending arm; 8. a stretching cylinder I; 9. a stretching cylinder II; 10. a secondary stretching cylinder I; 11. a second stretching cylinder II; 12. a three-extension cylinder I; 13. a triple extending cylinder II; 14. a four-extending cylinder; 15. five-extending cylinder; 16. six extend the jar.

Detailed Description

The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, a six-section telescopic boom device for a folding arm truck crane includes a basic boom 1, a first telescopic boom 2, a second telescopic boom 3, a third telescopic boom 4, a fourth telescopic boom 5, a fifth telescopic boom 6, and a sixth telescopic boom 7, which are connected in sequence in a sliding manner. An extension cylinder I8 and an extension cylinder II 9 are connected between the basic arm 1 and the extension arm 2, and the extension cylinder I8 and the extension cylinder II 9 are symmetrically arranged on the left side surface and the right side surface of the extension arm main body. The basic arm 1, the extension arm 2, the extension cylinder I8 and the extension cylinder II 9 form a first telescopic mechanism; the first telescopic mechanism stretches out and contracts through the simultaneous action of a stretching cylinder I8 and a stretching cylinder II 9.

Two stretching cylinders I10 and two stretching cylinders II 11 are connected between the first stretching arm 2 and the second stretching arm 3, the two stretching cylinders I10 and the two stretching cylinders II 11 are symmetrically arranged on the left side surface and the right side surface of the stretching arm main body, and the two stretching cylinders I10 and the two stretching cylinders II 11 are positioned on the upper sides of the first stretching cylinder I8 and the first stretching cylinder II 9. The first stretching arm 2, the second stretching arm 3, the second stretching cylinder I10 and the second stretching cylinder II 11 form a second stretching mechanism; the extension and contraction of the second telescopic mechanism are completed through the simultaneous action of the two extension cylinders I10 and II 11.

A three-stretching cylinder I12 and a three-stretching cylinder II 13 are connected between the two stretching arms 3 and the three stretching arms 4, the three-stretching cylinder I12 and the three-stretching cylinder II 13 are symmetrically arranged on the left side surface and the right side surface of the telescopic arm main body, and the three-stretching cylinder I12 and the three-stretching cylinder II 13 are positioned on the upper sides of the two-stretching cylinder I10 and the two-stretching cylinder II 11. The second stretching arm 3, the third stretching arm 4, the third stretching cylinder I12 and the third stretching cylinder II 13 form a third stretching mechanism; the third telescopic mechanism stretches out and contracts through the simultaneous action of the three-stretching cylinder I12 and the three-stretching cylinder II 13.

A four-stretching cylinder 14 is connected between the three-stretching arm 4 and the four-stretching arm 5, and the four-stretching cylinder 14 is positioned close to the right on the upper side surface of the telescopic arm main body. The three-extending arm 4, the four-extending arm 5 and the four-extending cylinder 14 form a fourth telescopic mechanism; the fourth telescopic mechanism is extended and contracted through the action of the four extending cylinder 14.

And a five-extending cylinder 15 is connected between the four-extending arm 5 and the five-extending arm 6, and the five-extending cylinder 15 is positioned in the middle of the upper side surface of the telescopic arm main body. The four extending arm 5, the five extending arm 6 and the five extending cylinder 15 form a fifth telescopic mechanism; the fifth telescopic mechanism is extended and contracted through the action of the five extending cylinder 15.

A six-extension cylinder 16 is connected between the five-extension arm 6 and the six-extension arm 7, and the six-extension cylinder 16 is positioned on the left side of the upper side surface of the telescopic arm main body. The five-extending arm 6, the six-extending arm 7 and the six-extending cylinder 16 form a sixth telescopic mechanism; the extension and contraction of the sixth telescoping mechanism are completed by the action of the sixth telescoping cylinder 16.

In the embodiment, the adjacent extending arms are connected through the telescopic oil cylinders to form different telescopic mechanisms. The first, second and third telescopic mechanisms are symmetrically distributed in a double-cylinder mode, the fourth and fifth telescopic mechanism oil cylinders are respectively arranged on two sides of the telescopic arm main body, the sixth telescopic mechanism cylinder 16 is arranged in the middle, and the telescopic arm main body is in a bullet head shape on the whole. In this embodiment, each extension is driven and controlled by a hydraulic system.

In the embodiment, the six sections of telescopic boom devices adopt the mode of symmetrical arrangement of the oil cylinders and adopt a double-cylinder pushing mode between the extending booms with large required thrust, so that the two sides of the telescopic boom main body are uniformly stressed, sufficient thrust can be provided for the telescopic boom main body to stretch, the stability and the jogging performance of telescopic actions are facilitated, and the lifting operation can be better adapted.

The jar that stretches among the six sections telescopic boom devices of this embodiment follows the symmetry principle when arranging, from bottom to top, by both sides to middle receipts, ingenious appearance that has combined the telescopic boom main part, from first telescopic machanism to sixth telescopic machanism telescoping device occupation space reduce gradually, wholly present "bullet" shape, structural design is reasonable, telescopic boom main part both sides atress is even, the very big reduction of during operation the skew of arm body, the appearance is pleasing to the eye compact, side direction space utilization is high, adapt to hoist and mount operation in narrow and small space.

In this embodiment, the first telescopic mechanism, the second telescopic mechanism and the third telescopic mechanism are relatively large in stress, double-cylinder symmetrical arrangement is adopted, compared with single-cylinder arrangement, thrust is symmetrical and stable, the service life of the telescopic oil cylinder is prolonged, the fourth telescopic mechanism, the fifth telescopic mechanism and the sixth telescopic mechanism are symmetrically distributed in a single-cylinder manner, the fourth telescopic mechanism and the fifth telescopic mechanism are respectively arranged on two sides of the arm support, the sixth telescopic mechanism is arranged in the middle, compared with the telescopic oil cylinders, the stress on two sides of the arm support is arranged in sequence to be more uniform, the structural design is more reasonable, and the stability and the micromotion of the telescopic device are guaranteed.