WO2013086893A1

WO2013086893A1 - Boom of concrete pump truck and concrete pump truck

Info

Publication number: WO2013086893A1
Application number: PCT/CN2012/082697
Authority: WO
Inventors: 吴斌兴; 黄柯; 周灵晶
Original assignee: 中联重科股份有限公司; 湖南中联重科专用车有限责任公司
Priority date: 2011-12-13
Filing date: 2012-10-10
Publication date: 2013-06-20
Also published as: US20150008702A1; EP2792814A1; IN2014KN01442A; RU2014123432A; BR112014014442A2; CN102518305A; CN102518305B

Abstract

A boom of a concrete pump truck and a concrete pump truck having the boom. The boom has a folded state and an unfolded state, and comprises seven boom sections (1 to 7) hinged in sequence. When the boom is in the folded state, the seven boom sections (1 to 7) are basically arranged into five mutually staggered straight lines, and at least the last two boom sections (6, 7) are on the same straight line. Due to such configuration, the overall size of the boom sections can be greatly reduced, and the requirements of the road running condition can be easily met. In addition, when the boom is in the folded state, at least last two boom sections (6, 7) are on the same straight line; so that the flexibility and the operability of a boom fabric can be greatly improved.

Description

Concrete pump truck boom and concrete pump truck

Technical field

The present invention relates to a conveying apparatus for concrete or other building materials, and in particular to a boom of a concrete pump truck and a concrete pump truck including the same. Background technique

Concrete pump trucks (also referred to as "concrete pump trucks" or "pump trucks") install concrete pumps and folding booms on the chassis of the car, and lay concrete pipes along the booms, which are finally output through the end hoses. Concrete conveying machinery. The folding boom has a folded state and an unfolded state. When folded, the boom is folded and placed on the chassis so that the pump can travel on the road. In the unfolded state, the boom is unfolded to cast concrete at a distance.

It is known that the folded form of the boom is mainly R-shaped, Z-shaped and RZ-shaped. The R-folding means that the multi-section arms are folded in a winding or rolling manner in one direction, for example, clockwise, and are unfolded in opposite directions, for example, counterclockwise. The Z-folding method means that the multi-section arm sections are folded or unfolded in opposite directions. The RZ shape is a combination of an R shape and a Z shape. In order to get a longer distance, more knots are needed. However, in the folded state, the pump truck is inevitably limited by the road driving conditions when driving on the road. For example, in the folded state, the length, width and height of the pump truck are limited by the road running specifications, so it is impossible to limit without limitation. Increase the number of sections of the arm section. At present, the number of arm joints of the boom of a concrete pump truck generally does not exceed six knots.

In order to increase the conveying distance of concrete, in the case where the number of arm joints is not increased, only the length of each arm section can be increased, but on the one hand, the flexibility and operability of the boom are lowered, on the other hand, As the length of the arm section increases, the cross-sectional dimension of the arm section also has to be increased accordingly, which will still cause the overall size of the pump truck to increase to a certain extent, which is restricted by the road driving conditions. How to ensure that the pump can meet the requirements of road driving conditions while ensuring the folding state, and can increase the conveying distance of concrete as much as possible when the boom is deployed, and at the same time ensure the flexibility and operability of the boom, which has been the field. Long-standing problems. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a boom for a concrete pump truck that can increase the concrete transport distance as much as possible while the boom is deployed without substantially increasing the overall size of the pump truck in the folded state. The flexibility and operability of the boom.

In order to achieve the above object, the present invention provides a boom of a concrete pump truck having a folded state and an unfolded state, the boom including seven articulated sections that are hinged in sequence, in the folded state, the seven sections The arm joints are arranged substantially in five straight lines that are offset from each other, and at least the last two arm sections are on the same straight line.

Preferably, in the folded state, the fourth to seventh arm sections are on two straight lines of the five straight lines.

Preferably, the fourth section arm section and the fifth section arm section are on a straight line of the two straight lines, and the sixth section arm section and the seventh section arm section are in another of the two straight lines On a straight line.

Preferably, in the folded state, the first section arm section and the second section arm section are located on the first longitudinal plane, and the fourth section to the seventh section arm section are located on the second longitudinal plane, the first longitudinal plane and the second The longitudinal faces are parallel and spaced apart from one another, and the third segment of the arms extends between the first longitudinal face and the second longitudinal face.

Preferably, when the boom is folded, the first to third arm sections are folded in a first direction, and the fourth section arm section is folded into the third section of the arm section in a second direction opposite to the first direction, sixth The arm section is folded in the first direction onto the fifth section of the arm section.

Preferably, the fifth section arm section, the sixth section arm section and the seventh section arm section are on a straight line of the two straight lines, and the fourth section arm section is separately in the two straight lines Another straight preference is that, in the folded state, the first section arm section and the second section arm section are located on the first longitudinal plane The fourth section to the seventh section of the arm section are located on the second longitudinal plane, the first longitudinal plane and the second longitudinal plane are parallel and spaced apart from each other, and the third section arm section is between the first longitudinal plane and the second longitudinal plane extend.

Preferably, when the boom is folded, the first to third arm sections are folded toward the first direction, and the fourth section of the arm section is folded to the third section of the arm section in a second direction opposite to the first direction, fifth The arm section is folded in the first direction onto the fourth section of the arm section.

Preferably, in the folded state, the five straight lines are substantially parallel to each other.

In addition, the present invention also provides a concrete pump truck comprising an automobile chassis, a turntable and a boom mounted on a chassis of the vehicle through a turntable, wherein the boom is an arm joint provided by the present invention.

With the above technical solution, a boom having seven arm sections can be provided, so that the conveying distance of the concrete can be improved to some extent. Further, in the folded state, the seven-section arm sections are basically arranged in five straight lines which are shifted from each other, so that the overall size of the arm sections can be greatly reduced, and it is easy to satisfy the requirements of road running conditions. Further, in the folded state, at least the last two arm sections are on the same straight line, whereby the flexibility and operability of the boom fabric can be greatly improved.

Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are in the In the drawing:

Figure 1 (a) is a side elevational view of a concrete pump truck in accordance with one embodiment of the present invention. Figure 1 (b) is a schematic diagram of Figure 1 (a).

Figure 2 (a) is a side elevational view of a concrete pump truck in accordance with another embodiment of the present invention. Figure 2 (b) is a schematic diagram of Figure 2 (a).

3 to 10 are schematic diagrams of concrete pump trucks according to other embodiments of the present invention, respectively. detailed description

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are intended to be illustrative and not restrictive.

As shown, the concrete pump truck mainly includes an automobile chassis, a turntable and a boom. The boom is mounted on the chassis of the vehicle through the turntable 8, so that it can be rotated around the turntable 8 as needed, and preferably rotated by 0-360 degrees.

The concrete pump truck provided by the present invention has seven articulated arm sections which are sequentially hinged, starting from the first section arm section 1 connected to the turntable 8, and sequentially being the first section to the seventh section of the arm section 1-7. Compared to the booms of the prior art which typically have five-section boom sections, the boom with seven-section boom sections can increase the conveying distance of concrete to a certain extent.

In addition, as an important aspect of the present invention, when the boom is in a folded state, the seven-section arm sections are arranged substantially in five straight lines that are offset from each other. In other words, the seven-section arm sections form a "five-layer" structure when folded. Rather than forming a "seven-layer" structure (whether R-shaped or Z-shaped) in the traditional sense, the overall size of the arm section, especially the height of the pumping truck, can be greatly reduced, thereby easily meeting the requirements of road driving conditions.

Further, as another important aspect of the present invention, at least the last two arm sections are on the same straight line when the boom is in a folded state, whereby the flexibility and operability of the boom cloth can be greatly improved. It is also because the multi-section arm sections are on the same straight line that the seven-section arm section can be folded into a "five-layer" structure. This feature is combined with the above features to form a completely new technical solution. A new type of boom is provided, which has significant advancement and market value compared to the conventional boom.

In the above technical solutions, the present invention may be implemented by various specific embodiments, for example, three arm sections are arranged in a straight line, so that the seven-section arm sections can be arranged into five straight lines; or, The four-section arm sections are arranged in two straight lines on two straight lines, and the seven-section arm sections can also be arranged in five straight lines. In theory, two sections arranged on the same line or The three-section arm section may be any adjacent one of the seven-section arm sections. However, as a preferred embodiment, the fourth to seventh arm sections (i.e., the last four arm sections) may be arranged on two straight lines. Since the end hose is usually connected to the last arm section, concrete or the like is conveyed to the designated work place through the end hose during operation. Therefore, arranging the last few arm sections in a straight line can greatly increase the flexibility and operability of the boom during the fabric process.

In the following, two preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1(a) and 1(b) show an embodiment of the present invention. As shown, in the seven-section arm section of the boom, the fourth section arm section 4 and the fifth section arm section 5 are in a straight line, the sixth section arm section 6 and the seventh section arm section 7 On another line. These two straight lines serve as the last two straight lines of the five straight lines of the boom of the present invention. In this way, placing the last four boom sections on two adjacent straight lines not only reduces the overall size of the pump, but also greatly increases the flexibility and operability of the boom fabric.

In addition, as can be seen from Fig. 1 (a), when the boom is in the folded state, the first section arm section 1 and the second section arm section 2 are located on the first longitudinal plane, and the fourth section arm section 4 to seventh The arm section 7 is located on the second longitudinal face, the first longitudinal face and the second longitudinal face are parallel and spaced apart from each other, and the third section arm section 3 extends between the first longitudinal face and the second longitudinal face. That is, in the width direction of the pump truck, the first longitudinal face including the first segment arm section 1 and the second section arm section 2 and the second longitudinal direction including the fourth section arm section 4 to the seventh section arm section 7 The faces are spaced apart from each other, and the two longitudinal faces are connected by the third segment arm section 3, that is, the third section arm section 3 is designed in a curved shape such that one end thereof is located in the first longitudinal plane and the other end is located in the second longitudinal plane. Inside. In this way, the height of the pump truck can be lowered, and at the same time, the space in the width direction of the pump chassis can be fully utilized.

In addition, as a preferred folding method of the boom, as shown in the figure, when the boom is folded, the first arm section 1 to the third section arm section 3 are oriented in the first direction (shown in FIG. 1(b) Folded clockwise), the fourth section of the arm section 4 is folded into the third section of the arm section 3 in a second direction (counterclockwise direction) opposite to the first direction, and the sixth section of the arm section 6 is folded toward the first direction Five arm sections 5 on. Boom Expand in the opposite direction. Through this hybrid folding method, the space occupied by the boom in the folded state can be effectively reduced, the overall size of the pump truck in the walking state can be reduced, and the requirements of the road driving condition can be easily satisfied.

2(a) and 2(b) show a second embodiment of the present invention. As shown, in the seven-section arm section of the boom, the fifth section arm section 5, the sixth section arm section 6 and the seventh section arm section 7 are on the same straight line, and the fourth section arm Section 4 is on another adjacent straight line. In this way, the last three arm sections are arranged on the same straight line, which can further improve the flexibility and operability of the boom. In some limited space, it can also ensure the smooth delivery of concrete to the designated Work place.

In addition, similar to the first embodiment described above, it is also possible to arrange the seven-section arm sections separately in the two longitudinal planes in order to reduce the height of the pump truck while fully utilizing the space in the width direction of the pump chassis, which is not repeated. Description.

In addition, as a preferred folding method of the boom, as shown in the figure, when the boom is folded, the first arm section 1 to the third section arm section 3 are oriented in the first direction (shown in FIG. 2(b) Folded clockwise), the fourth section of the arm section 4 is folded in the second direction opposite to the first direction (counterclockwise as shown in Fig. 2(b)) onto the third section of the arm section 3, the fifth section arm Section 5 is folded in the first direction onto the fourth section of arm section 4. Through this hybrid folding method, the space occupied by the boom in the folded state can also be effectively reduced, the overall size of the pump truck in the walking state can be reduced, and the requirements of the road running condition can be easily satisfied.

Further, as an embodiment of the present invention, as shown in Fig. 1 (a) and Fig. 2 (a), the five straight lines formed by the seven-section arm sections are substantially parallel to each other. SP, when the arm section is in a folded state, all the arm sections are substantially horizontal, and the structure is relatively stable and relatively easy to arrange.

As another aspect of the present invention, there is also provided a concrete pump truck, mainly comprising an automobile chassis, a turntable and a boom, the boom being mounted on the chassis of the vehicle through the turntable 8, and the boom adopting the arm provided by the present invention frame.

In addition to the above two embodiments, the present invention also provides a boom having a seven-section arm section. Other embodiments, as shown in Figures 3 to 10, respectively, will be described below.

As shown in Fig. 3, in the folded state, the sixth-section arm section 6 and the seventh-section arm section 7 are arranged in a straight line, so that the flexibility and operability of the boom can be improved. In addition, when the boom is folded, the folding manner of the first arm section 1 to the third section arm section 3 is R-shaped, the folding direction is the clockwise direction shown in FIG. 3, and the third section arm section 3 to the sixth section. The section of the arm section 6 is folded in a Z shape.

As shown in Fig. 4, in the folded state, the sixth section arm section 6 and the seventh section arm section 7 are arranged in a straight line. In addition, when the boom is folded, the first section of the arm section 1 to the third section of the arm section 3 is folded in a zigzag manner, and the third section of the arm section 3 to the sixth section of the arm section 6 is folded in a reverse Z shape. That is, the folding direction is opposite to the folding direction of the first segment arm section 1 to the third section arm section 3.

As shown in FIG. 5, when the boom is folded, the folding manner of the first arm section 1 to the third section arm section 3 is Z-shaped, and the folding manner of the third section arm section 3 to the sixth section arm section 7 is reversed. The Z-shape, that is, the folding direction is opposite to the folding direction of the first-section arm section 1 to the third-section arm section 3.

As shown in Fig. 6, in the folded state, the sixth section arm section 6 and the seventh section arm section 7 are arranged in a straight line. In addition, when the boom is folded, the folding manner of the first arm section 1 to the third section arm section 3 is R-shaped, the folding direction is the clockwise direction shown in FIG. 6, and the third section arm section arm section 3 is The fifth section of the arm section 5 is folded in a reverse R shape, that is, the folding direction is a counterclockwise direction, and the sixth section arm section 6 is folded clockwise to the lower side of the fifth section arm section 5. In addition, in this embodiment, the fifth section arm section 5, the sixth section arm section 6 and the seventh section arm section 7 are arranged in a front height and a low inclination manner in the front-rear direction of the pump truck, thereby improving the chassis. The utilization of the upper space reduces the overall size of the pump truck.

As shown in Fig. 7, in the folded state, the sixth section arm section 6 and the seventh section arm section 7 are arranged in a straight line. In addition, when the boom is folded, the folding manner of the first section arm section 1 to the third section arm section 3 is Z-shaped, and the folding manner of the second section arm section 2 to the sixth section arm section 6 is R-shaped, and the folding direction is It is the counterclockwise direction shown in FIG. Further, in this embodiment, the fifth section arm section 5 is arranged in a front, low, and rear inclined manner in the front-rear direction of the pump truck. As shown in FIG. 8, when the boom is folded, the first section arm section 1 to the third section arm section 3 are folded in an R shape, the folding direction is the clockwise direction shown in FIG. 8, and the third section is an arm section. The folding manner of the 3rd to 5th arm sections 5 is reverse R shape, that is, the folding direction is counterclockwise, and the fifth section arm section 5 to the seventh section arm section 7 are folded in an R shape, and the folding direction is clockwise. direction.

As shown in Fig. 9, in the folded state, the sixth section arm section 6 and the seventh section arm section 7 are arranged in a straight line. In addition, when the boom is folded, the first section arm section 1 to the third section arm section 3 are folded in an R-shape, the folding direction is the clockwise direction shown in FIG. 9, and the second section arm section 2 is the fifth. The section arm section 5 is folded in a Z-shape, and the sixth section arm section 6 is folded clockwise to the underside of the fifth section arm section 5.

As shown in Fig. 10, in the folded state, the sixth section arm section 6 and the seventh section arm section 7 are arranged in a straight line. In addition, when the boom is folded, the first section of the arm section 1 to the third section of the arm section 3 is folded in a zigzag manner, and the third section of the arm section 3 to the fifth section of the arm section 5 is folded in a reverse Z shape. The sixth section of the arm section 6 is folded clockwise to the underside of the fifth section of the arm section 5.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not be further described in various possible combinations.

In addition, any combination of various embodiments of the invention may be made, as long as it does not deviate from the idea of the invention, and should also be regarded as the disclosure of the invention.

Claims

Rights request

What is claimed is: 1. A boom for a concrete pump truck, the boom having a folded state and an unfolded state, wherein the boom comprises seven articulated sections that are hinged in sequence, and in the folded state, the seven-section boom section Basically arranged in five straight lines that are staggered from each other, and at least the last two sections of the arm are in the same straight line

2. The boom of a concrete pump truck according to claim 1, wherein in the folded state, the fourth to seventh arm sections are on two straight lines of the five straight lines.

3. The boom of a concrete pump truck according to claim 2, wherein said fourth section arm section and said fifth section arm section are on a straight line of said two straight lines, said sixth section The arm section and the seventh section arm section are on the other of the two straight lines.

4. The boom of a concrete pump truck according to claim 3, wherein in the folded state, the first section arm section and the second section arm section are located on the first longitudinal plane, and the fourth section to the seventh section The pitch arm section is located on the second longitudinal face, the first longitudinal face and the second longitudinal face are parallel and spaced apart from each other, and the third pitch arm section extends between the first longitudinal face and the second longitudinal face.

5. The boom of a concrete pump truck according to claim 4, wherein when the boom is folded, the first to third arm sections are folded in a first direction, and the fourth section is directed toward the first The second direction of the opposite direction is folded onto the third section of the arm section, and the sixth section of the arm section is folded toward the fifth section of the arm section.

6. The boom of a concrete pump truck according to claim 2, wherein said fifth section arm section, said sixth section arm section and said seventh section arm section are on a straight line of said two straight lines , The fourth section of the arm section is alone on the other of the two straight lines.

7. The boom of a concrete pump truck according to claim 6, wherein in the folded state, the first section arm section and the second section arm section are located on the first longitudinal plane, and the fourth section to the seventh section The pitch arm section is located on the second longitudinal face, the first longitudinal face and the second longitudinal face are parallel and spaced apart from each other, and the third pitch arm section extends between the first longitudinal face and the second longitudinal face.

8. The boom of a concrete pump truck according to claim 7, wherein when the boom is folded, the first to third arm sections are folded in a first direction, and the fourth section is directed toward the first The second direction of the opposite direction is folded onto the third section of the arm section, and the fifth section of the arm section is folded toward the fourth section of the arm section.

9. The boom of a concrete pump truck according to claim 1, wherein in the folded state, the five straight lines are substantially parallel to each other.

10. A concrete pump truck comprising an automobile chassis, a turntable and a boom, the boom being mounted on a chassis of the vehicle by a turntable, characterized in that the boom is according to any one of claims 1-9 Boom.