CN217711778U

CN217711778U - Arm support device and operation machine

Info

Publication number: CN217711778U
Application number: CN202221445017.4U
Authority: CN
Inventors: 谢世惠; 李江波; 刘阳
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-11-01
Anticipated expiration: 2032-06-09

Abstract

The utility model relates to an operation machinery technical field especially relates to an arm support device and operation machinery. The utility model provides a boom device is at least including articulated first festival arm, second festival arm and third festival arm in proper order, the boom device still includes first hydro-cylinder and second hydro-cylinder at least, wherein, the cylinder base end of first hydro-cylinder with the cylinder base end of second hydro-cylinder all articulate in the second boom, the tailpiece of the piston rod of first hydro-cylinder with first festival arm is articulated mutually, the tailpiece of the piston rod of second hydro-cylinder with third festival arm is articulated mutually. The utility model provides a cantilever crane device and operation machinery, it can solve the unable normal problem that expandes and draw in of cantilever crane device.

Description

Boom device and working machine

Technical Field

The utility model relates to an operating machinery technical field especially relates to a cantilever crane device and operating machinery.

Background

In the prior art, a work machine provided with a turntable and a boom device is generally arranged right behind a cab and at the front end of a chassis, and this type is a turntable front arrangement mode. The arm support device comprises a first section arm, a second section arm and a third section arm which are sequentially hinged, and the first section arm is hinged with the rotary table.

For the arrangement mode of the middle of the rotary table, namely under the condition that the rotation center of the rotary table is located in the middle of the machine body of the working machine, the first arm section is shorter than the second arm section, if two oil cylinder seats are arranged on the first arm section, the stroke of the oil cylinder of the second arm section is shorter due to space limitation, and the second arm section cannot be normally unfolded and folded.

Therefore, how to solve the problem that the boom device cannot be normally unfolded and folded in the prior art becomes an important technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cantilever crane device and operation machinery, it can solve the unable normal problem that expandes and draw in of cantilever crane device.

The utility model discloses a first aspect provides a boom device, at least including articulated first festival arm, second festival arm and third festival arm in proper order, the boom device still includes first hydro-cylinder and second hydro-cylinder at least, wherein, the cylinder base end of first hydro-cylinder with the cylinder base end of second hydro-cylinder all articulate in the second boom, the tailpiece of the piston rod of first hydro-cylinder with first festival arm is articulated mutually, the tailpiece of the piston rod of second hydro-cylinder with third festival arm is articulated mutually.

According to the utility model provides a cantilever crane device, the length of first festival arm is less than the length of second festival arm.

According to the utility model provides a cantilever crane device, second festival arm is provided with first hydro-cylinder seat and second hydro-cylinder seat, the cylinder block end of first hydro-cylinder with first hydro-cylinder seat is articulated mutually, the cylinder block end of second hydro-cylinder with second hydro-cylinder seat is articulated mutually.

According to the arm support device provided by the utility model, the piston rod end of the first oil cylinder is hinged with the first section arm through the first connecting rod component; and the end of a piston rod of the second oil cylinder is hinged with the third section of arm through a second connecting rod assembly.

According to the utility model provides a boom device, first connecting rod subassembly and/or second connecting rod subassembly includes first connecting rod and second connecting rod, first connecting rod with the second connecting rod is articulated mutually, and first connecting rod with the tip of second connecting rod articulates respectively on two adjacent jibs, just first connecting rod or the second connecting rod with the piston rod end is articulated.

According to the utility model provides a cantilever crane device, first hydro-cylinder seat with second hydro-cylinder seat all is close to in the middle part position of second festival arm.

A second aspect of the present invention provides a working machine, including a machine body and a boom device provided on the machine body, wherein the boom device is any one of the boom devices described above.

The utility model provides an operation machinery still includes revolving stage and third hydro-cylinder, the revolving stage set up in on the organism, the cylinder block end of third hydro-cylinder with first festival arm is articulated mutually, the tailpiece of the piston rod end with the revolving stage is articulated mutually.

According to the utility model provides a working machine, the revolving stage extremely distance between the first end of organism is greater than the third of organism length, just the revolving stage extremely distance between the second end of organism also is greater than the third of organism length, the first end of organism with the second end of organism does the organism is at the relative both ends of length direction.

According to the utility model provides an operation machine, operation machine is the concrete pump truck.

The utility model provides an among the technical scheme, the cantilever crane device still includes first hydro-cylinder and second hydro-cylinder at least including articulated first festival arm, second festival arm and third festival arm in proper order, the cantilever crane device, wherein, the cylinder base end of first hydro-cylinder and the cylinder base end of second hydro-cylinder all articulate in the second cantilever crane, the tailpiece of the piston rod of first hydro-cylinder is articulated mutually with first festival arm, the tailpiece of the piston rod of second hydro-cylinder is articulated mutually with third festival arm. According to the configuration, the utility model provides a cantilever crane device has set up two hydro-cylinders on second festival arm, two hydro-cylinders correspond respectively between drive second festival arm and the first festival arm and the third festival between the arm draw in relatively and expand, so set up, even put the operation machinery of revolving stage in, first festival arm length is shorter, because only need with first festival arm set up a hydro-cylinder can, and set up two hydro-cylinders on the great second festival arm of length, the flexible stroke of hydro-cylinder is not influenced, still can guarantee the normal draw in and open of first festival arm and second festival arm.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an arm support device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a turntable in an embodiment of the present invention;

wherein, in fig. 1 and 2:

11: a turntable; 12: a first joint arm; 13: a second arm; 14: a third arm section; 15: a first cylinder block; 16: a second cylinder block; 17: a first cylinder; 18: a second cylinder; 19: a first link assembly; 20: a second linkage assembly; 21: a first link; 22: a second link; 23: a third cylinder block; 24: a third oil cylinder; 25: a base; 26: a support plate; 27: a first hinge hole; 28: a second hinge hole.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The boom device and the working machine provided in the embodiment of the present invention are described below with reference to fig. 1 to 2.

The utility model provides an in the embodiment, the cantilever crane device is at least including articulated first festival arm 12, second festival arm 13 and third festival arm 14 in proper order. The arm section quantity of the arm support device can be set according to the actual condition, the utility model discloses do not do specifically and restrict.

In this embodiment, a rotary table 11 may be disposed on the machine body of the working machine, a first end of the first arm 12 is hinged to the rotary table 11, a first end of the second arm 13 is hinged to a second end of the first arm 12, and a first end of the third arm 14 is hinged to a second end of the second arm 13.

It should be noted that the boom device provided in this embodiment may be used in a work machine with a middle rotating platform, that is, the rotating platform 11 of the work machine is disposed at a middle position close to a machine body of the work machine. Unlike the prior art work machine with a forward turntable, the length of the first arm 12 of the work machine with a center turntable is smaller than the length of the second arm 13. Of course, in other embodiments, the boom device provided in this embodiment may also be applied to other types of working machines.

Because the length of the first arm section 12 is small, if two oil cylinders are arranged on the first arm section 12, the telescopic strokes of the two oil cylinders are short, and the arm support cannot be fully unfolded or folded.

In view of this, in the embodiment provided by the present invention, the second knuckle arm 13 is provided with a first cylinder seat 15 and a second cylinder seat 16, a first cylinder 17 is hinged between the first cylinder seat 15 and the first knuckle arm 12, and a second cylinder 18 is hinged between the second cylinder seat 16 and the third knuckle arm 14.

The first oil cylinder 17 is used for driving the second link arm 13 to expand or contract relative to the first link arm 12, and the second oil cylinder 18 is used for driving the third link arm 14 to expand or contract relative to the second link arm 13. Because the length of the second arm section 13 is long in this embodiment, two oil cylinders are arranged on the second arm section 13, so that it can be ensured that the two oil cylinders have long telescopic strokes, and further, the second arm section 13 and the third arm section 14 can be fully unfolded and folded. The first arm 12 is only provided with one oil cylinder, the oil cylinder is used for driving the first arm 12 to unfold or fold relative to the rotary table 11, and the first arm 12 is only provided with one oil cylinder, so that the oil cylinder on the first arm 12 can be fully ensured to have a long telescopic stroke, and the first arm 12 can be fully unfolded or folded.

With such a configuration, the boom device provided in this embodiment can overcome the problem that the boom device in the prior art cannot be fully unfolded and folded.

In a further embodiment, the first cylinder 17 has a cylinder block end which is hinged to the first cylinder block 15 and a rod end which is hinged to the first arm 12 via a first link assembly 19. The cylinder base end and the piston rod end refer to two opposite ends of the oil cylinder, wherein the piston rod end refers to one end, located outside the cylinder barrel, of a piston rod of the oil cylinder, and the cylinder base end refers to one end, opposite to the piston rod end, of the cylinder barrel.

The first link assembly 19 includes a first link 21 and a second link 22, wherein a first end of the first link 21 is hinged to the first knuckle arm 12, a first end of the second link 22 is hinged to the second knuckle arm 13, the first link 21 and the second link 22 are hinged to each other, the hinge point is located between the first end and the second end of the first link 21, and a piston rod end of the first cylinder 17 is hinged to a second end of the first link 21.

So set up, when first hydro-cylinder 17 is flexible, can drive second festival arm 13 and carry out effective expansion or draw in for first festival arm 12.

Similarly, the second cylinder 18 has a cylinder block end hinged to the second cylinder block 16 and a piston rod end hinged to the third link arm 14 via a second linkage assembly 20. In this embodiment, the second connecting rod assembly 20 also includes a first connecting rod 21 and a second connecting rod 22, and the structure and connection manner of the first connecting rod 21 and the second connecting rod 22 are the same as those of the first connecting rod assembly 19, and are not described herein again. With such an arrangement, the third arm section 14 can be driven to effectively unfold or fold relative to the second arm section 13 through the telescopic movement of the second oil cylinder 18.

In a further embodiment, the first and

second cylinder blocks

15, 16 are located close to the middle of the second knuckle arm 13, and the first and

second cylinder blocks

15, 16 are symmetrically located. It should be noted that, in this embodiment, the first cylinder seat 15 and the second cylinder seat 16 may be provided as a hinge hole structure on the second joint arm 13, and the cylinder seat of the cylinder is hinged on the second joint arm 13 through a hinge shaft. The first oil cylinder seat 15 and the second oil cylinder seat 16 are arranged close to the middle part of the second section arm 13, so that the first oil cylinder 17 and the second oil cylinder 18 can improve the extension stroke of the piston rod as much as possible, and the extension or retraction degree of the second section arm 13 and the third section arm 14 is ensured. For convenience of arrangement, the first oil cylinder seat 15 and the second oil cylinder seat 16 are symmetrically distributed on the second knuckle arm 13, and the symmetric center is a middle tangent plane of the second knuckle arm 13.

In a further embodiment, a third cylinder seat 23 is arranged on the first joint arm 12, and a third cylinder 24 is hinged between the third cylinder seat 23 and the rotary table 11. The cylinder seat end of the third oil cylinder 24 is hinged with the third oil cylinder seat 23, and the piston rod end is hinged with the rotary table 11. In this embodiment, the first oil cylinder 17, the second oil cylinder 18 and the third oil cylinder 24 are arranged on the same side of the boom device. So arranged, the third oil cylinder 24 can realize the effective unfolding or folding of the first section arm 12.

In order to improve the stability of the boom device, in a further embodiment, the turntable 11 includes a base 25 and a pair of support plates 26 disposed on the base 25, two corresponding first hinge holes 27 and two corresponding second hinge holes 28 are disposed on the pair of support plates 26, the first arm 12 is hinged to the turntable 11 through the first hinge hole 27, and the piston rod end of the third cylinder 24 is hinged to the turntable 11 through the second hinge hole 28.

In some embodiments, the base 25 may be configured as a circular plate, a pair of supporting plates 26 is vertically disposed on the base 25, and the pair of supporting plates 26 are spaced apart from each other, and a pair of side walls of the first link arm 12 correspond to the pair of supporting plates 26 one by one, and the first link arm 12 is hinged to the turntable 11 by a hinge shaft inserted into the first hinge hole 27 and the first link arm 12. The piston rod of the third cylinder 24 is hinged to the turntable 11 through a hinge shaft inserted into the piston rod and the second hinge hole 28.

A second aspect of the present invention provides a working machine, including a machine body and a boom device provided on the machine body, the boom device is the boom device provided in any of the above embodiments.

With such an arrangement, in the working machine provided by the embodiment, the rotary table 11 of the boom device can be arranged at a position close to the middle of the machine body, and each boom can be fully unfolded and folded.

In some embodiments, the distance between the turntable 11 and the first end of the body is greater than one third of the length of the body, and the distance between the turntable 11 and the second end of the body is also greater than one third of the length of the body. It should be noted that the first end of the machine body and the second end of the machine body are two ends of the machine body opposite to each other in the length direction. So set up, revolving stage 11 is close to the middle part position of operation machinery relatively, has realized putting the setting of revolving stage in the middle.

In some embodiments, the work machine may be a concrete pump truck. Of course, in other embodiments, the work machine may be a fire truck, a crane, or the like.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The arm support device is characterized by at least comprising a first section arm (12), a second section arm (13) and a third section arm (14) which are sequentially hinged, and at least comprising a first oil cylinder (17) and a second oil cylinder (18), wherein the cylinder base end of the first oil cylinder (17) and the cylinder base end of the second oil cylinder (18) are hinged to the second section arm (13), the piston rod end of the first oil cylinder (17) is hinged to the first section arm (12), and the piston rod end of the second oil cylinder (18) is hinged to the third section arm (14).

2. Boom arrangement according to claim 1, characterized in that the length of the first segment arm (12) is smaller than the length of the second segment arm (13).

3. The boom device according to claim 1 or 2, characterized in that the second knuckle arm (13) is provided with a first cylinder seat (15) and a second cylinder seat (16), the seat end of the first cylinder (17) being hinged to the first cylinder seat (15), and the seat end of the second cylinder (18) being hinged to the second cylinder seat (16).

4. The boom device according to claim 1 or 2, characterized in that the piston rod end of the first cylinder (17) is hinged to the first knuckle arm (12) by a first link assembly (19); and the piston rod end of the second oil cylinder (18) is hinged with the third section arm (14) through a second connecting rod assembly (20).

5. The boom arrangement according to claim 4, characterized in that the first link assembly (19) and/or the second link assembly (20) comprises a first link (21) and a second link (22), the first link (21) and the second link (22) are hinged, and the ends of the first link (21) and the second link (22) are hinged on two adjacent link arms, respectively, and the first link (21) or the second link (22) is hinged with the piston rod end.

6. Boom arrangement according to claim 3, characterized in that the first cylinder base (15) and the second cylinder base (16) are each located close to the middle position of the second knuckle arm (13).

7. A working machine, characterized by comprising a machine body and a boom device arranged on the machine body, wherein the boom device is the boom device as claimed in any one of claims 1-6.

8. The working machine according to claim 7, further comprising a turntable (11) and a third cylinder (24), wherein the turntable (11) is arranged on the machine body, a cylinder base end of the third cylinder (24) is hinged to the first knuckle arm (12), and a piston rod end is hinged to the turntable (11).

9. The work machine according to claim 8, characterized in that the distance between the turntable (11) and the first end of the machine body is more than one third of the length of the machine body, and the distance between the turntable (11) and the second end of the machine body is also more than one third of the length of the machine body, the first end of the machine body and the second end of the machine body being opposite ends of the machine body in the length direction.

10. The work machine of claim 7, wherein the work machine is a concrete pump truck.