WO2013091329A1

WO2013091329A1 - Engineering machinery and stabilizer structure thereof

Info

Publication number: WO2013091329A1
Application number: PCT/CN2012/074048
Authority: WO
Inventors: 刘星; 胡雄伟; 张友林
Original assignee: 湖南三一智能控制设备有限公司; 三一重工股份有限公司
Priority date: 2011-12-21
Filing date: 2012-04-14
Publication date: 2013-06-27
Also published as: CN102490696A

Abstract

A stabilizer structure and an engineering machinery comprising the same, comprising a horizontal stabilizer; the horizontal stabilizer comprises at least two sequentially hinged sub-stabilizers; any two adjacent sub-stabilizers are provided with a first drive part (2) therebetween for driving the adjacent sub-stabilizers to unfold and fold; of the sub-stabilizers, a first sub-stabilizer (31) is hinged with the engineering machinery body; the first sub-stabilizer (31) and the engineering machinery body are provided with a second drive part (4) therebetween for driving the first sub-stabilizer (31) to unfold and fold; and at least one of the sub-stabilizers is capable of extending and retracting. The stabilizer structure, on one hand, simplifies the structure thereof, thus reducing manufacturing cost; and on the other hand, can smoothly unfold and fold each sub-stabilizer, thus improving operation reliability.

Description

Construction machinery and its leg structure

This application claims priority to Chinese Patent Application No. 201110433005.X, filed on December 21, 2011, entitled "Engineering Machinery and Its Leg Structure", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The invention relates to the technical field of engineering machinery, in particular to a leg structure. Furthermore, the invention relates to a construction machine comprising the leg structure.

Background technique

In the prior art, the leg structure of the construction machine adopts the following several structural forms: a rear swing leg, an X leg, a front swing leg, and a curved leg. Taking the concrete pump truck as an example, when working, the four legs of the pump truck are deployed to form a square or trapezoidal shape, which is used to bear the weight of the whole vehicle and the bending moment generated by the concrete during the concrete transportation process of the pump truck, thereby preventing the pump. The car is overturned to ensure the safety and stability of the pump when it is working.

The Chinese Patent No. CN200820133505 discloses a leg structure; specifically, as shown in FIG. 1 and FIG. 2, FIG. 1 is a schematic structural view of a leg structure of a prior art leg when folded; FIG. Figure 1 is a schematic view showing the structure of the leg of the leg structure in Fig. 1.

As shown in Figures 1 and 2, the leg structure comprises two front horizontal legs 2' and two rear horizontal legs 3' attached to the turret 1', the front horizontal legs 2' comprising four branches The legs are respectively the first section leg 2'1, the second section leg 2'2, the third section leg 2'3 and the fourth section leg 2'4, and the legs are sequentially hinged. The ends of the fourth section of the leg are connected with vertical legs which are used to achieve the support. In addition, each side of the turret 1' is also provided with a leg frame 4', and when the front horizontal leg 2' is folded, as shown in Fig. 1, the legs of the front horizontal leg 2' need to be sequentially slid and recovered. In the leg frame 4'; when the front horizontal leg 2' is unfolded, as shown in Fig. 2, the leg portions of the front horizontal leg 2' need to slide out from the leg frame 4' in turn. However, this type of front horizontal leg 2' folding and unfolding structure has the following disadvantages:

First, the structure is more complicated and the manufacturing cost is higher. Specifically, it is necessary to separately fix and fix one leg frame 4' on both sides of the turret 1'. The fixed structure of the leg frame 4' and the space occupied by the leg frame 4' are a very large test for the optimal design of the structure. In addition, a driving structure is required between the front horizontal leg 2' and the leg frame 4' to drive the recovery and unfolding of the respective leg legs, and the driving structure is arranged in a limited space of the leg frame. Difficulties. Secondly, the leg frame 4' is not linearly distributed, and the front end is provided with a curved portion 4Ί, so that when the leg is extended or retracted, the bending portion 4Ί is blocked, thereby causing the legs to not be able to It is smoothly extended or retracted by the leg frame 4', so the reliability of the work is not high.

In view of this, how to develop a structural structure and a leg structure with high operational reliability is an urgent problem to be solved by those skilled in the art.

Summary of the invention

The technical problem to be solved by the present invention is to provide a leg structure, and the structural design of the device can on the one hand compress the structure thereof, thereby reducing the manufacturing cost; on the other hand, the legs can be smoothly unfolded and collapsed. Thereby the reliability of the work can be improved. Further, another technical problem to be solved by the present invention is to provide a construction machine including the above-described leg structure.

In order to solve the above technical problems, the present invention provides a leg structure for use in a construction machine, including a horizontal leg;

The horizontal leg includes at least two legs, and the legs are sequentially hinged, and a first driving component for driving the adjacent leg to be unfolded and folded is disposed between any two adjacent pitch legs; In each of the legs, the first leg is hinged to the body of the construction machine, and a second driving component for driving the first leg to expand and fold is provided therebetween; and each leg is At least one leg is a telescopic leg.

Preferably, the first drive member includes a first cylinder and a linkage mechanism that cooperates with the first cylinder to drive a 180° deployment between adjacent pitch legs.

Preferably, two adjacent pitch legs are defined as a first adjacent leg and a second adjacent leg, respectively, and the two pitch legs are hinged to the main hinge point; the link mechanism includes a first rod And a second rod; one end of the first cylinder is hinged to one end of the first rod, and the other end of the first cylinder is hinged to the first adjacent leg away from the main hinge point One end, the other end of the first rod is hinged to an end of the second adjacent leg near the main hinge point; the second rod and the first adjacent leg are adjacent to the main hinge One end of the point is hinged and the other end is hinged to the first member.

Preferably, the telescopic leg comprises an outer arm, an inner arm disposed inside the outer arm, and a third driving member that can drive the inner arm to move inside the outer arm.

Preferably, the horizontal leg comprises two legs, which are the first leg and the second leg respectively, and the second leg is the telescopic leg. Preferably, the first leg is further hinged to a side of the body adjacent the front end so that it can be folded toward the rear side.

Based on the prior art, the horizontal leg of the leg structure provided by the present invention comprises at least two legs, and the legs are sequentially hinged, and a drive is provided between any two adjacent legs. a first driving component that is unfolded and folded by the adjacent pitch leg; wherein each of the leg supports is hinged to the body of the construction machine, and the first leg is driven between the two legs a second driving member that is unfolded and folded; and, at least one of the legs of each of the legs is a telescopic leg.

When the legs are folded, the first driving component and the second driving component may be operated simultaneously or sequentially, so that the first leg legs swing around the hinge point on the body to be folded on one side of the body; The legs are folded under the driving of the first driving component and are folded on the outer side of the first leg.

When the legs are deployed, the first driving component and the second driving component may be operated simultaneously or sequentially, so that the first leg legs swing around the hinge point on the body, thereby swinging out from one side of the body; In addition, the sections between the legs are unfolded under the drive of the first drive member, thereby ultimately achieving the deployment of the legs.

As described above, in the present invention, the legs are not provided with the leg frames on both sides, but the segments of the horizontal legs are driven by the corresponding driving members, sequentially folded in one side of the body or by One side of the body is swinged out, and is not protruded or retracted by the leg frame. Therefore, on the one hand, the structure is compressed, the manufacturing cost is reduced, and on the other hand, the legs can be smoothly unfolded and Closing improves the reliability of the work.

In addition, in order to solve the above technical problem, the present invention also provides a leg structure for a construction machine, including a horizontal leg, and the horizontal leg includes only the first leg;

The first leg is hinged to the body of the construction machine with a second driving component for driving the first leg to expand and fold;

And, the first section leg is a telescopic leg.

The technical effect of the leg structure is the same as that described above, and will not be described herein. Furthermore, in order to solve the above technical problem, the present invention also provides a construction machine comprising a body; the construction machine further comprising a leg structure according to any one of the preceding claims, wherein the first leg is hinged to the On the body.

Preferably, the body comprises a turret, and the first leg is hinged to the turret; The turret is provided with a leg placement space on a side on which the first leg is mounted, and the second driving component can drive the first leg to swing and fold into the leg placement space.

Preferably, the turret is provided with a recess on a side on which the first leg is mounted, and the recess forms the leg placement space.

Preferably, the horizontal leg is a front horizontal leg, and the number of the front horizontal legs is two; the construction machine further comprises two rear horizontal legs hinged on the turret;

a distance between the hinge points of the front horizontal leg and the rear horizontal leg on the turret on the same side of the turret, greater than the hinge of the two front horizontal legs on the turret The distance between the points.

The technical effects of the construction machine are the same as those described above, and will not be described herein.

DRAWINGS

1 is a schematic structural view of a leg of a prior art leg when folded;

Figure 2 is a schematic view showing the structure of the leg structure of Figure 1 when the legs are deployed;

3 is a schematic structural view of a leg structure when the legs are gathered according to an embodiment of the present invention; FIG. 4 is a schematic structural view of the leg structure of FIG. 3 when the legs are unfolded;

Figure 5 is a schematic view showing the structure of the leg structure of Figures 3 and 4 when the horizontal leg is gathered; Figure 6 is a schematic view showing the structure of the horizontal leg of Figure 5 when it is deployed to a certain extent;

Figure 7 is a schematic view showing the structure of the horizontal leg of Figure 5 when it is fully deployed.

Wherein, the correspondence between the reference numerals and the component names in FIGS. 1 and 2 is:

Turn tower

2' front horizontal leg; 2Ί first section leg; 2'2 second section leg; 2'3 third section leg; 2'4 fourth section leg;

3' rear horizontal leg;

4' leg frame.

The correspondence between the reference numerals and the part names in Figures 3 to 7 is:

1 turret; 11 depression;

2 first driving member; 21 first cylinder; 22 linkage mechanism; 221 first rod; 222 second rod;

3 front horizontal legs; 31 first section legs; 31a main hinge points; 32 second section legs; 321 outer sleeve arms; 322 inner sleeve arms;

4 second drive component; 5 rear horizontal legs;

6 vertical legs.

detailed description

The core of the present invention is to provide a leg structure, and the structural design of the device can on the one hand to compress its own structure, thereby reducing the manufacturing cost; on the other hand, the legs can be smoothly unfolded and collapsed, thereby improving The reliability of the work. Further, another core of the present invention is to provide a construction machine including the above-described leg structure.

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 3 and FIG. 4. FIG. 3 is a schematic structural view of the leg structure when the legs are gathered according to an embodiment of the present invention; FIG. 4 is a structural schematic view of the leg structure of FIG.

In one embodiment, as shown in FIGS. 3 and 4, the leg structure provided by the present invention is used in a construction machine, including a horizontal leg; the horizontal leg includes at least two legs, and each leg The first drive member 2 is driven between the two adjacent pitch legs to drive the adjacent leg legs to expand and fold.

On the basis of the above structure, as shown in FIG. 3 and FIG. 4, in each of the legs, the first section leg 31 is hinged with the body of the construction machine, and the first section is driven between the two sections. The second driving member 4 of the leg 31 is unfolded and folded; and, at least one of the legs is a telescopic leg.

When the legs are gathered, as shown in FIG. 3, the first driving member 2 and the second driving member 4 can be operated simultaneously or sequentially, so that the first leg 31 swings around the hinge point on the body, thereby folding On one side of the body; further, the legs are folded under the driving of the first driving member 2, and are folded on the outer side of the first leg 31.

When the legs are deployed, as shown in FIG. 4, the first driving member 2 and the second driving member 4 can be operated simultaneously or sequentially, so that the first leg 31 swings around the hinge point on the body, thereby One side of the body is swung out; in addition, the joint legs are unfolded under the driving of the first driving member 2, thereby finally realizing the unfolding of the legs.

From the above, in the present invention, the two sides of the body are not provided with leg frames, but the legs of the horizontal legs are driven by the corresponding driving members, and are sequentially folded on one side of the body or Swinging from one side of the body, rather than sliding out or retracting from the leg frame, On the one hand, the structure is self-contained, the processing and manufacturing cost is reduced, and on the other hand, the legs of each section can be smoothly unfolded and gathered, and the reliability of the work is improved.

It can be understood that the leg device of the structure is flexible in deployment, and the deployment angle between each adjacent two arm segments can be arbitrarily adjusted, and the telescopic movement of the telescopic legs can be matched to facilitate finding a suitable support point at the construction site; Moreover, each arm section of the leg can swing at the same time, which greatly saves the movement time of the horizontal leg to expand or contract, and improves the working efficiency of the construction machine.

Specifically, as shown in Figures 3 and 4, the first leg 31 is further hinged to the side of the body near the front end so that it can be folded toward the rear side. This structural design enables the first leg 31 to be folded more conveniently and to facilitate the setting of the second driving member 4.

It should be noted that, in the above technical solution, the present invention does not limit whether the horizontal leg is the front horizontal leg 3 or the rear horizontal leg 5; thus, regardless of the front horizontal leg 3 or the rear horizontal leg 5, As long as the above structural design is adopted, it should be within the scope of the present invention.

Based on the above technical solution, a specific design of the first driving unit 2 can also be made. Specifically, as shown in FIG. 5, FIG. 6, and FIG. 7, FIG. 5 is a structural schematic view of the leg structure of FIG. 3 and FIG. 4 when the horizontal leg is gathered; FIG. 6 is a view of the horizontal leg of FIG. Schematic diagram of the degree of the structure; Figure 7 is a schematic view of the structure of the horizontal leg in Figure 5 when fully deployed.

The first drive member 2 includes a first cylinder 21 and a link mechanism 22 that cooperates with the first cylinder 21 so as to drive 180 between adjacent pitch legs. Expand. The first cylinder 21 and the link mechanism 22 cooperate to enable 180 between adjacent pitch legs. Expanding, so that the span can be further improved to ensure the stability of the construction machinery.

Specifically, two adjacent pitch legs are defined as a first adjacent leg and a second adjacent leg, respectively, and specifically, as shown in FIGS. 5 to 7, the horizontal leg includes two legs. In addition, the first section leg 31 can be defined as a first adjacent leg, the second section leg 32 is a second adjacent leg, and a main hinge point 31a is disposed between the two legs; When the number of pitch legs included in the horizontal leg is greater than two knots, any two adjacent pitch legs may be defined as the first adjacent leg and the second adjacent leg. Further, as shown in Figs. 5 to 7, the link mechanism 22 includes a first lever member 221 and a second lever member 222.

On the basis of the above structural design, as shown in FIG. 5 to FIG. 7, one end of the first cylinder 21 is hinged to one end of the first rod member 221, and the other end of the first cylinder 21 is hinged to the first adjacent leg away from the main One end of the hinge point 31a, the other end of the first rod 221 is hinged to the second adjacent leg near the main hinge One end of the point 31a; the second rod 222 is hinged to an end of the first adjacent leg adjacent to the main hinge point 31a, and the other end is hinged to the first rod 221 .

As shown in FIG. 5, under the cooperation of the first cylinder 21 and the link mechanism 22, the horizontal legs are completely folded; as shown in FIG. 6, with the cooperation of the first cylinder 21 and the link mechanism 22, The horizontal leg is deployed to a certain extent; as shown in Fig. 7, under the cooperation of the first cylinder 21 and the link mechanism 22, the horizontal leg realizes a complete 180° deployment; The specific design of the 21 and the linkage mechanism 22 facilitates the complete deployment and complete folding of the horizontal legs, and the structural unit is simple, and the manufacturing cost is low.

Based on any of the above technical solutions, a specific design of the structure of the telescopic legs can also be made.

As shown in FIGS. 6 and 7, the telescopic leg includes an outer arm 321 , an inner sleeve arm 322 disposed inside the outer casing arm 321 , and a third driving member that can drive the inner sleeve arm 322 to move inside the outer casing arm 321 . This kind of structural design makes it easy to realize the expansion and contraction of the legs, and the reliability of the expansion and contraction is high.

In addition, as shown in FIG. 6 and FIG. 7, in the above technical solution, the horizontal leg can be specifically designed to include two legs, including the first leg 31 and the second leg 32, and the second leg The end is connected with a vertical leg 6; on the basis of the structure, as shown in Figures 6 and 7, the second leg 32 can be a telescopic leg; of course, the first leg 31 can also be telescopic a leg, such that the second leg 32 is coupled to the inner leg of the first leg 31; and when the number of the leg is greater than two, any of the legs may be a telescopic leg, This is not limited, and the number of expansion and contraction sections of the telescopic legs is not limited.

In addition, the present invention also provides a leg structure for a construction machine, including a horizontal leg, and the horizontal leg includes only the first leg 31; the first leg 31 hinges the body of the construction machine And a second driving member 4 for driving the first leg 31 to expand and fold is provided between the two; and the first leg 31 is a telescopic leg. The technical effect of the leg structure is the same as that of the above, and will not be described herein.

It should be noted that the only difference between the leg structure and the above leg structure is that, in this technical solution, the horizontal leg only includes the first leg 31; and the structural design of the above-mentioned telescopic leg And the structure of the hinge point on the body on the side close to the front side can be applied in the structure of the leg. Furthermore, the present invention also provides a construction machine comprising a body; the construction machine further comprising a leg structure as in any of the above embodiments, the first leg 31 being hinged to the body.

Specifically, in an embodiment, as shown in FIG. 3 and FIG. 4, the construction machine may be a concrete pump truck. On the basis of the above, the body includes a turret 1 , and the first section leg 31 is hinged to the rotation. Further, the turret 1 is provided with a leg placement space on a side on which the first leg 31 is mounted, and the second driving member 4 can drive the first leg 31 to swing and fold on the leg Place it in space.

In the present invention, the two sides of the turret 1 are not provided with a leg frame, but a leg placement space is provided, and each leg of the horizontal leg is driven by the corresponding driving member, and is sequentially folded on the leg. In the space or by the ML space, the oscillating and unfolding is not extended or retracted by the sliding frame of the leg frame, so that the structure is compressed on the one hand, the manufacturing cost is reduced, and the legs can be made on the other hand. The ability to smoothly expand and close, improving the reliability of the work.

It should be noted that the construction machine provided by the present invention is not limited to a concrete pump truck; obviously, in the field of construction machinery, any construction machine that uses a leg structure for expanding the support area on the ground is provided by the present invention. The leg structure should be within the scope of the present invention. For example, the construction machine can also be a crane.

Based on the above structure, further design can be made. Specifically, as shown in Figs. 3 and 4, the turret 1 is provided with a recess 11 on the side on which the first leg 31 is mounted, and the recess 11 forms a leg placement space. This structural design makes it easy to form the leg placement space without changing the general structure of the turret 1, and also makes the transition between the turret 1 and the legs more compact when folded.

As shown in FIG. 3 and FIG. 4, in the above technical solution, the horizontal leg can be specifically set as the front horizontal leg 3, and the number thereof is two; and the construction machine further includes two hinged to the turret 1 on the rear horizontal leg 5; on this basis, as shown in Figures 3 and 4, on the same side of the turret 1 the front horizontal leg 3 and the rear horizontal leg 5 are hinged on the turret 1 The distance hi between them is greater than the distance h2 between the hinge points of the two front horizontal legs 3 on the turret 1.

With this structural design, the distance between the support point of the front horizontal leg 3 and the support point of the rear horizontal leg 5 on the same side thereof is set larger, when the concrete pump truck has a large inclination on the left and right sides, etc. When working in a special terrain environment, the front horizontal leg 3 and the rear horizontal leg 5 of one side can be unfolded, while the front horizontal leg 3 and the rear horizontal leg 5 of the other side are still folded, thereby achieving a single Side support function, avoiding the front horizontal leg and rear water in the prior art due to the same side The distance between the flat legs is too close to achieve single-sided support defects, which further expands the scope of use of the concrete pump truck and enhances its working stability and reliability.

The construction machine and its leg structure provided by the present invention are described in detail above. This document is only intended to aid in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

Rights request

1 . A leg structure for a construction machine, comprising a horizontal leg; wherein the horizontal leg comprises at least two legs, and the legs are hinged in sequence, and any two adjacent sections A first driving member (2) for driving the adjacent leg legs to expand and fold is provided between the legs; in each of the legs, the first leg (31) is hinged to the body of the construction machine, and A second driving member (4) for driving the first leg (31) to be unfolded and folded is provided between the two; and at least one leg of each of the legs is a telescopic leg.

2. The leg structure according to claim 1, wherein the first driving member (2) comprises a first cylinder (21) and a link mechanism (22) cooperating with the first cylinder (21), In order to drive 180° between adjacent section legs.

3. The leg structure of claim 2, wherein two adjacent pitch legs are defined as a first adjacent leg and a second adjacent leg, respectively, and the two leg legs are hinged to Main hinge point

(31a); the link mechanism (22) includes a first rod member (221) and a second rod member (222); one end of the first cylinder (21) and the first rod member (221) One end of the first cylinder (21) is hinged at an end of the first adjacent leg away from the main hinge point (31a), and the other end of the first rod (221) is hinged to The second adjacent leg is adjacent to one end of the main hinge point (31a); the second rod member (222) is hinged to an end of the first adjacent leg adjacent to the main hinge point (31a) The other end is hinged to the first rod (221).

The leg structure according to claim 1, wherein the telescopic leg comprises an outer arm (321), an inner sleeve arm (322) disposed inside the outer arm (321), and the inner casing (322) A third drive member that moves the sleeve arm (322) inside the outer casing arm (321).

The leg structure according to any one of claims 1 to 4, wherein the horizontal leg comprises two legs, which are the first leg (31) and the second leg, respectively (32), and the second leg (32) is the telescopic leg.

The leg structure according to any one of claims 1 to 5, wherein the first leg (31) is further hinged to a side of the body near the front end so that it can be toward the rear of the vehicle Side fold.

7. A leg structure for use in a construction machine, comprising a horizontal leg, the horizontal leg comprising only a first leg (31);

The first leg (31) is hinged to the body of the construction machine, and is disposed between the two There is a second driving member (4) for driving the first leg (31) to be unfolded and folded; and the first leg (31) is a telescopic leg.

8. A construction machine comprising a body; wherein the construction machine further comprises a leg structure according to any one of claims 1 to 7, the first leg (31) being hinged to the On the body.

The construction machine according to claim 8, wherein the body comprises a turret (1), and the first leg (31) is hinged to the turret (1);

The turret (1) is provided with a leg placement space on a side on which the first leg (31) is mounted, and the second driving component (4) can drive the first leg (31) to swing and fold Place the space in the leg.

The construction machine according to claim 9, wherein the turret (1) is provided with a recessed portion (11) on a side on which the first pitch leg (31) is mounted, the recessed portion ( 11) forming the leg placement space.

11. The construction machine according to claim 9 or 10, characterized in that

The horizontal legs are front horizontal legs (3) and the number of front horizontal legs (3) is two; the construction machine further comprises two rear horizontal legs hinged to the turret ( 5);

The distance between the front horizontal leg (3) and the rear horizontal leg (5) on the same side of the turret (1) between the hinge points on the turret (1) is greater than two The distance between the hinge points of the front horizontal legs (3) on the turret (1).