CN204079306U - A kind of arm-folding crane - Google Patents

Abstract

The utility model discloses a folding arm crane, which belongs to the field of cranes. The knuckle boom crane includes a base column, a slewing tower, a main boom, a knuckle boom, a knuckle-boom luffing cylinder, an auxiliary hoisting wire rope, an auxiliary hoisting winch and an auxiliary hook; the slewing tower is set on the base column, and the main jib The bottom is hinged at the bottom of the slewing tower, the folding arm is hinged at the top of the main boom, the oil cylinder part of the folding arm luffing cylinder is set on the main boom, and the piston rod part of the folding arm luffing cylinder is set on the folding arm. One end of the auxiliary hoisting wire rope is wound on the auxiliary hoisting winch, and the other end of the auxiliary hoisting wire rope is connected with the auxiliary hook. The folding jib crane also includes the first guide pulley, the second guide pulley, the main luffing wire rope and the main luffing Drawworks, the first guide pulley is fixed on the top of the slewing tower, the second guide pulley is fixed on the upward surface of the top of the main boom, the main luffing winch is set in the slewing tower, and one end of the main luffing wire rope goes around the second guide The pulley and the first guide pulley are wound on the main luffing winch.

Description

A folding arm crane

technical field

The utility model relates to the field of cranes, in particular to a folding arm crane.

Background technique

The knuckle boom crane is a kind of crane, which includes a basic arm and a knuckle jib, and the knuckle jib is movably connected with the basic jib. Wherein, the base arm and the folding arm are respectively adjusted in amplitude through hydraulic cylinders. Luffing through the hydraulic cylinder has the advantages of fast luffing speed and high work efficiency. However, when the amplitude of the hydraulic cylinder is changed, the size and specification of the hydraulic cylinder is limited by the installation position of the hydraulic cylinder, and the load that the hydraulic cylinder can carry can only be within a certain range. Therefore, the lifting capacity of the knuckle-arm crane The relatively small size makes the knuckle-boom crane unsuitable for space scenarios that require heavy lifting.

Utility model content

In order to solve the problems in the prior art, the embodiment of the utility model provides a knuckle-arm crane. Described technical scheme is as follows:

The embodiment of the utility model provides a folding arm crane, which includes a base column, a slewing tower, a main boom, a folding arm, a folding arm luffing cylinder, an auxiliary hoisting wire rope, an auxiliary hoisting winch, and Auxiliary hook;

The slewing tower is arranged on the base column, the bottom of the main boom is hinged at the bottom of the slewing tower, the folding arm is hinged at the top of the main boom, and the knuckle boom luffing cylinder The oil cylinder part is set on the main boom, the piston rod part of the folding arm luffing cylinder is set on the folding arm, and one end of the auxiliary hoisting wire rope is wound on the main lifting arm. or on the auxiliary hoisting winch on the slewing tower, the other end of the auxiliary hoisting wire rope is connected to the auxiliary hook by going around the guide pulley set on the folding arm, and the auxiliary hook hangs below said folding arm,

The knuckle boom crane also includes a first guide pulley, a second guide pulley, a main luffing wire rope, and a main luffing winch,

The first guide pulley is fixed on the top of the slewing tower, the second guide pulley is fixed on the upward surface of the main boom top, the main luffing winch is arranged in the slewing tower, the One end of the main luffing wire rope goes around the second guide pulley and the first guide pulley in turn and is wound on the main luffing winch, and the other end of the main luffing wire rope is fixed on the top of the slewing tower or the top of the main boom.

In the first embodiment, the knuckle boom crane further includes a third guide pulley, a fourth guide pulley, a main hoisting wire rope, a main hoisting winch, and a main hook,

The third guide pulley is fixed on the top of the slewing tower, the fourth guide pulley is fixed on the downward surface of the top of the main boom, and the main hoisting winch is arranged in the slewing tower. One end of the main hoisting wire rope is wound on the main hoisting winch, and the other end of the main hoisting wire rope is wound around the third guide pulley, the second guide pulley, the fourth guide pulley and the The main hook is connected, and the main hook hangs below the main jib.

In the second embodiment, the guide pulley set includes fifth to seventh guide pulleys, the fifth guide pulley and the sixth guide pulley are respectively arranged at both ends of the folding arm, and the fifth guide pulley Near the joint of the main boom and the folding arm, the seventh guide pulley is located in the middle of the fifth guide pulley and the sixth guide pulley.

In the third embodiment, the auxiliary hoisting winch is arranged on the upward surface of the middle part of the main boom.

In the fourth embodiment, the auxiliary hoisting winch is arranged on the bottom-down surface of the main boom.

In the fifth embodiment, the auxiliary hoisting winch is arranged in the middle of the slewing tower.

In a sixth embodiment, the main jib is a box-type structure.

The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

The main jib is luffed through the main luffing steel wire rope, and the jib is luffed through the jib luffing oil cylinder. The jib is luffed by wire rope, therefore, it can be hoisted with heavy loads through the auxiliary hook.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural view of a knuckle-arm crane provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the installation position of the auxiliary hoisting winch provided by the embodiment of the present invention.

In the figure: 1-base column, 2-slewing tower, 3-main boom, 4-folding arm, 5-folding arm luffing cylinder, 51-oil cylinder part, 52-piston rod part, 6-pair lifting wire rope , 7-pair hoisting winch, 8-pair hook, 9-guide pulley block, 91-fifth guide pulley, 92-sixth guide pulley, 93-seventh guide pulley, 10-first guide pulley, 11-th Two guide pulleys, 12-main luffing wire rope, 13-main luffing winch, 14-the third guide pulley, 15-the fourth guide pulley, 16-main hoisting wire rope, 17-main suspension hook.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Example

The embodiment of the utility model provides a folding arm crane, referring to Fig. 1 and Fig. 2, the folding arm crane includes: a base column 1, a slewing tower 2, a main boom 3, a folding arm 4, and a folding arm luffing cylinder 5 , auxiliary lifting wire rope 6, auxiliary lifting winch 7 and auxiliary hook 8.

The slewing tower 2 is arranged on the base column 1, the bottom of the main boom 3 is hinged on the bottom of the slewing tower 2, and the folding arm 4 is hinged on the top of the main boom 3. The oil cylinder part 51 in the jib luffing oil cylinder 5 is arranged on the main boom 3 , and the piston rod part 52 in the jib luffing oil cylinder 5 is arranged on the knuckle arm 4 . One end of the auxiliary hoisting wire rope 6 is wound on the auxiliary hoisting winch 7 arranged on the main boom 3 or on the slewing tower 2, and the other end of the auxiliary hoisting wire rope 6 is wound around the guide pulley block 9 arranged on the folding arm 4 Connect with auxiliary hook 8. Auxiliary hook 8 hangs below folding arm 4.

The knuckle boom crane also includes: a first guide pulley 10 , a second guide pulley 11 , a main luffing wire rope 12 , and a main luffing winch 13 .

The first guide pulley 10 is fixed on the top of the slewing tower 2, and the second guide pulley 11 is fixed on the upward surface of the main boom 3 top. The main luffing winch 13 is arranged in the slewing tower 2, and one end of the main luffing wire rope 12 goes around the second guide pulley 11 and the first guide pulley 10 in turn and is wound on the main luffing winch 13, and the other end of the main luffing wire rope 12 One end can be fixed on the main jib 3 top, also can be fixed on the slewing tower 2 top.

It should be noted that the power source required by the knuckle boom crane is not shown in the figure, such as hydraulic motors that provide hydraulic oil for the knuckle jib luffing cylinder 5 , the auxiliary hoisting winch 7 and the main luffing winch 13 . The structure of the power source can adopt the structure of the power source in the related art.

In this embodiment, the hinged connection between the knuckle boom 4 and the main boom 3 may be used. The main jib 3 performs the luffing operation through the main luffing wire rope 12 , and the knuckle boom 4 performs the luffing operation through the knuckle jib oil cylinder 5 . When the folding arm 4 and the main jib 3 work simultaneously, a substantial hoisting can be realized by the auxiliary hook 8 . Moreover, since the main boom 3 is a wire rope luffing, heavy-load hoisting can be realized through the auxiliary hook 8 .

Wherein, the guide pulley set 9 includes fifth to seventh guide pulleys 91 , 92 , 93 . The fifth guide pulley 91 and the sixth guide pulley 92 are arranged at both ends of the folding arm 4 respectively, the fifth guide pulley 91 is close to the joint of the main boom 3 and the folding arm 4, and the seventh guide pulley 93 is located at the fifth guide pulley 91 and the sixth guide pulley 92 middle.

Wherein, the knuckle-arm crane also includes: a third guide pulley 14, a fourth guide pulley 15, a main hoisting wire rope 16, a main hoisting winch (not shown), and a main hook 17.

The third guide pulley 14 is fixed on the top of the slewing tower 2, the fourth guide pulley 15 is fixed on the downward surface of the top of the main boom 3, the main hoisting winch is arranged in the slewing tower 2, and one end of the main hoisting wire rope 16 is wound Made on the main hoisting winch, the other end of the main hoisting wire rope 16 goes around the third guide pulley 14, the second guide pulley 11 and the fourth guide pulley 15 and is connected with the main hook 17 successively. The main hook 17 hangs below the main jib 3 .

Wherein, the main hoisting winch and the main luffing winch 13 may be the same winch.

In this embodiment, when carrying out small hoisting, the folding arm 4 may not participate in the work, and the main luffing winch 13 and the main hoisting winch are operated to make the main boom 3 go through the main luffing wire rope 12 for luffing and passing Main hoisting wire rope 16 and main suspension hook 17 carry out hoisting, just realized the hoisting of small range. Moreover, since the main boom 3 is a wire rope luffing, the main boom 3 can realize super-heavy hoisting. As mentioned above, when carrying out large-scale hoisting, the folding arm 4 and the main boom 3 work at the same time, the main boom 3 performs the luffing operation through the main luffing wire rope 12, and the folding arm 4 passes through the folding arm luffing oil cylinder 5 to carry out luffing, can realize substantial hoisting by auxiliary hook 8.

Wherein, the auxiliary hoisting winch 7 can be arranged on the upward surface of the main boom 3 middle part (see Figure 1), also can be arranged on the downward surface of the main boom 3 bottom (see Figure 2), and can also be provided with In the middle part (see Fig. 2) of slewing tower 2, also can be located on the installation platform of crane.

When the auxiliary hoisting winch 7 is arranged in the middle of the main boom 3 or the middle of the slewing tower 2, the bottom structure space of the crane can be saved; when the auxiliary lifting winch 7 is arranged at the bottom of the main boom 3 or the bottom of the slewing tower 2 Or the installation platform of the crane, it is more convenient to maintain. In short, operators can make reasonable arrangements according to the overall needs.

Wherein, the main boom 3 may be a box-shaped structure.

In the embodiment of the utility model, the main boom is operated through the main luffing steel wire rope, and the folding arm is carried out through the folding arm luffing oil cylinder. Large-scale hoisting, since the main boom is a wire rope luffing, heavy-duty hoisting can be realized through the auxiliary hook.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (7)

1. an arm-folding crane, described arm-folding crane comprises pilum (1), turret (2), main crane arm (3), folding arm (4), folding arm amplitude oil cylinder (5), secondary hoist rope (6), secondary hoister winch (7) and secondary suspension hook (8);

Described turret (2) is located on described pilum (1), described main crane arm (3) bottom-hinged is in described turret (2) bottom, described folding arm (4) is hinged on described main crane arm (3) top, oil cylinder part (51) in described folding arm amplitude oil cylinder (5) is located on described main crane arm (3), piston rod portion (52) in described folding arm amplitude oil cylinder (5) is located on described folding arm (4), the one ends wound of described secondary hoist rope (6) is being located on the described secondary hoister winch (7) of described main crane arm (3) above or on described turret (2), the other end of described secondary hoist rope (6) is walked around the leading sheave group (9) be located on described folding arm (4) and is connected with described secondary suspension hook (8), the hanging of described secondary suspension hook (8) is in described folding arm (4) below, it is characterized in that,

Described arm-folding crane also comprises the first leading sheave (10), the second leading sheave (11), main variable-amplitude steel wire rope (12) and main span winch (13),

Described first leading sheave (10) is fixed on described turret (2) top, described second leading sheave (11) is fixed on face upwards, described main crane arm (3) top, described main span winch (13) is located in described turret (2), one end of described main variable-amplitude steel wire rope (12) is walked around described second leading sheave (11) and described first leading sheave (10) successively and is wrapped on described main span winch (13), the other end of described main variable-amplitude steel wire rope (12) is fixed on the top of described turret (2) or the top of described main crane arm (3).

2. arm-folding crane according to claim 1, it is characterized in that, described arm-folding crane also comprises the 3rd leading sheave (14), the 4th leading sheave (15), main hoist rope (16), main hoister winch and main suspension hook (17)

Described 3rd leading sheave (14) is fixed on described turret (2) top, described 4th leading sheave (15) is fixed on downward face, described main crane arm (3) top, described main hoister winch is located in described turret (2), the one ends wound of described main hoist rope (16) is on described main hoister winch, the other end of described main hoist rope (16) walks around described 3rd leading sheave (14) successively, described second leading sheave (11) is connected with described main suspension hook (17) with described 4th leading sheave (15), the hanging of described main suspension hook (17) is in described main crane arm (3) below.

3. arm-folding crane according to claim 1, it is characterized in that, described leading sheave group (9) comprises the 5th to the 7th leading sheave (91,92,93), described 5th leading sheave (91) and described 6th leading sheave (92) are separately positioned on the two ends of described folding arm (4), the junction of the close described main crane arm (3) of described 5th leading sheave (91) and described folding arm (4), described 7th leading sheave (93) is positioned in the middle of described 5th leading sheave (91) and described 6th leading sheave (92).

4. the arm-folding crane according to any one of claim 1-3, is characterized in that, described secondary hoister winch (7) is located on face upwards, described main crane arm (3) middle part.

5. the arm-folding crane according to any one of claim 1-3, is characterized in that, described secondary hoister winch (7) is located on downward face, described main crane arm (3) bottom.

6. the arm-folding crane according to any one of claim 1-3, is characterized in that, described secondary hoister winch (7) is arranged on the middle part of described turret (2).

7. the arm-folding crane according to any one of claim 1-3, is characterized in that, described main crane arm (3) is box-structure.