CN109501780B - Outrigger structure and engineering vehicle - Google Patents

Abstract

The present invention discloses a leg structure and an engineering vehicle, which relate to the field of engineering machinery and are used to optimize the leg structure. The leg structure includes a fixed box, a first leg assembly and a second leg assembly. The first end of the first leg assembly is installed inside the fixed box; the first end of the second leg assembly is installed inside the fixed box, and the first end of the second leg assembly is nested inside the first end of the first leg assembly. The above technical scheme realizes the nested installation of the first leg assembly and the second leg assembly, and the first leg assembly and the second leg assembly share the leg box. This structural form is compact, occupies a small space, is easy to use, and greatly optimizes the space required for the overall layout of the legs and the leg span, realizing the normal operation of small fire rescue vehicles in specific areas, and has a wide range of applications in small fire rescue vehicles and similar vehicles.

Description

Outrigger structure and engineering vehicle

Technical Field

The invention relates to the field of engineering machinery, and in particular to an outrigger structure and an engineering vehicle.

Background Art

Existing outrigger structures of engineering machinery include: H-type outrigger, X-type outrigger and rear cross-type outrigger.

The inventors have found that there are at least the following problems in the prior art: the outrigger structures on the left and right sides of the existing engineering machinery are installed in a front-to-back parallel form, the left and right outriggers move in their respective outrigger boxes, and the horizontal telescopic cylinder is installed in the inner cavity of the outriggers. This structural form causes the outriggers and outrigger boxes to occupy a large space, which is difficult to implement on small firefighting and rescue vehicles. The firefighting and rescue targets of small firefighting and rescue vehicles are mainly shanty towns, urban-rural fringe areas and other areas with dense populations, narrow roads, and lack of basic firefighting facilities. The particularity of the operating area places high demands on its external dimensions. The current outrigger structure of engineering machinery is difficult to meet the requirements.

Summary of the invention

The present invention provides a leg structure and an engineering vehicle, which are used to optimize the leg structure.

The present invention proposes a leg structure, comprising:

Fixed box;

A first leg assembly, a first end of which is mounted inside the fixed box; and

The first end of the second leg assembly is installed inside the fixed box, and the first end of the second leg assembly is nested inside the first end of the first leg assembly.

In some embodiments, the leg structure further comprises:

The first driving mechanism is installed inside the fixed box and is drivingly connected to the first leg assembly.

In some embodiments, the leg structure further comprises:

The second driving mechanism is installed inside the fixed box and is drivingly connected to the second leg assembly.

In some embodiments, the leg structure further comprises:

A positioning mechanism is provided between the first leg assembly and the fixed box; and/or the positioning mechanism is provided between the first leg assembly and the second leg assembly.

In some embodiments, the positioning mechanism is configured to be adjustable in length.

In some embodiments, the positioning mechanism comprises:

An adjusting bolt is connected to the thread of the first leg assembly or the second leg assembly.

In some embodiments, the positioning mechanism comprises:

A rod member is configured to be retractable, and one end of the rod member is mounted on the first leg assembly or the fixed box or the second leg assembly; and

The rolling element is installed on the other end of the rod.

In some embodiments, the positioning mechanism comprises:

A rod member is configured to be retractable, and one end of the rod member is mounted on the first leg assembly or the fixed box or the second leg assembly; and

The sliding body is installed on the other end of the rod.

In some embodiments, the leg structure further comprises:

The sliding block is arranged between the first leg assembly and the second leg assembly; and/or, is arranged between the first leg assembly and the fixed box.

In some embodiments, the slider is made of nylon.

In some embodiments, the first leg assembly comprises:

A first movable box, a first end of which is installed inside the fixed box; and

The first vertical support leg is installed on the second end of the first movable box and is located outside the fixed box.

In some embodiments, the second leg assembly comprises:

A second movable box, a first end of which is installed inside the first leg assembly; and

The second vertical support leg is installed at the second end of the second movable box and is located outside the fixed box.

Another embodiment of the present invention provides an engineering vehicle, comprising a leg structure provided by any technical solution of the present invention.

In some embodiments, the engineering vehicle comprises a fire truck.

The above technical scheme proposes a new type of outrigger structure for small fire rescue vehicles and similar contribution machinery. The technical scheme realizes the nested installation of the first leg assembly and the second leg assembly. The first leg assembly and the second leg assembly share a leg box. This structural form has a compact structure, occupies a small space, is easy to use, and greatly optimizes the space required for the overall layout of the legs and the outrigger span, realizing the normal operation of small fire rescue vehicles in specific areas, and has a wide range of applications in small fire rescue vehicles and similar vehicles.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

FIG1 is a schematic front view of a leg structure provided by an embodiment of the present invention;

FIG2 is a schematic cross-sectional view of a leg structure provided by an embodiment of the present invention in a front view direction;

FIG3 is a schematic cross-sectional view of a leg structure provided by an embodiment of the present invention;

FIG4 is a schematic cross-sectional view in the front direction of the outrigger structure in the extended state provided by an embodiment of the present invention.

DETAILED DESCRIPTION

The technical solution provided by the present invention is described in more detail below in conjunction with FIGS. 1 to 4 .

1 to 4 , an embodiment of the present invention provides a leg structure, including a fixed box 1, a first leg assembly 2, and a second leg assembly 3. The first end of the first leg assembly 2 is installed inside the fixed box 1; the first end of the second leg assembly 3 is installed inside the fixed box 1, and the first end of the second leg assembly 3 is nested inside the first end of the first leg assembly 2.

The fixed box body 1 is fixed to the vehicle body, and during the process of the first leg assembly 2 and the second leg assembly 3 respectively extending and retracting, the fixed box body 1 is stationary.

The cross section of the fixed box 1 is, for example, rectangular, circular, elliptical, etc. The shapes of the nested parts of the first leg assembly 2 and the second leg assembly 3 match the shape of the fixed box 1 .

The above technical solution has a compact structure, occupies a small space, is easy to use, greatly optimizes the overall layout of the vehicle, and is widely applicable to small fire rescue vehicles.

Referring to FIG. 1 , in some embodiments, the leg structure further includes a first driving mechanism 4 , which is installed inside the fixed box 1 and is drivingly connected to the first leg assembly 2 .

The first driving mechanism 4 is located outside the first leg assembly 2. The first driving mechanism 4 includes a first horizontal oil cylinder. One end of the first horizontal oil cylinder is connected to the first lifting ear 23 on the first movable box 21 described later through a pin shaft, and the other end is connected to the first fixed lifting ear 11 on the fixed box 1 through a pin shaft.

Referring to FIG. 1 , in some embodiments, the leg structure further includes a second driving mechanism 5 , which is installed inside the fixed box 1 and is drivingly connected to the second leg assembly 3 .

Referring to Fig. 1, the second driving mechanism 5 is located outside the second leg assembly 3. The second driving mechanism 5 includes a second horizontal oil cylinder. One end of the second horizontal oil cylinder is connected to the second lifting ear 33 on the second movable box 31 described later through a pin shaft, and the other end is connected to the second fixed lifting ear 12 on the fixed box 1 through a pin shaft.

The above technical solution adopts the nested installation of the left and right movable boxes 1 and the external installation of the horizontal cylinder legs, which not only ensures the leg span but also optimizes the space occupied by the legs and the leg boxes.

1 , the first driving mechanism 4 and the second driving mechanism 5 are installed vertically side by side and symmetrically. That is, the first horizontal oil cylinder and the second horizontal oil cylinder are installed vertically side by side and symmetrically.

When the outrigger moves, the first movable box 21 moves rightward in the inner cavity of the fixed box 1 under the push of the first horizontal oil cylinder. The second movable box 31 moves leftward in the first movable box 21 under the push of the second horizontal oil cylinder. Referring to FIG. 3 , a nylon slider 7 is installed on the inner wall of the first movable box 21 to prevent the first movable box 21 from shaking.

Referring to FIG. 3 , in some embodiments, the leg structure further includes a positioning mechanism 6 , which is disposed between the first leg assembly 2 and the fixed box 1 ; and/or, the positioning mechanism 6 is disposed between the first leg assembly 2 and the second leg assembly 3 .

After the first leg assembly 2 is extended, the first leg assembly 2 will be deformed due to the heavy weight of the vehicle. The positioning mechanism 6 is used to adjust the distance between the first leg assembly 2 and the fixed box 1.

After the second leg assembly 3 is extended, the second leg assembly 3 will be deformed due to the heavy weight of the vehicle. The positioning mechanism 6 is used to adjust the distance between the first leg assembly 2 and the second leg assembly 3.

In some embodiments, the positioning mechanism 6 is configured to be adjustable in length.

For example, a telescopic structure or an elastic structure is used to maintain a set distance between the two components. For example, if the positioning mechanism 6 is disposed between the first leg assembly 2 and the fixed box 1, the first leg assembly 2 and the fixed box 1 are maintained at a set distance to prevent the first leg assembly 2 from deforming due to its own weight after being extended, causing wear between the first leg assembly 2 and the inner wall of the fixed box 1. For example, if the positioning mechanism 6 is disposed between the first leg assembly 2 and the second leg assembly 3, the first leg assembly 2 and the second leg assembly 3 are maintained at a set distance to prevent the second leg assembly 3 from deforming due to its own weight after being extended, causing wear between the first leg assembly 2 and the inner wall of the second leg assembly 3.

The following describes optional implementations of the positioning mechanism 6.

In some embodiments, the positioning mechanism 6 includes an adjusting bolt, which is threadedly connected to the first leg assembly 2 .

After the adjusting bolt is installed, the length of the adjusting bolt is basically determined for a certain type of construction machinery. During the working process, the length of the adjusting bolt can be set according to actual needs.

In some embodiments, the positioning mechanism 6 includes a rod and a rolling body. The rod is configured to be retractable, and one end of the rod is mounted on the first leg assembly 2 or the fixed box 1. The rolling body is mounted on the other end of the rod. The friction resistance of the rolling body is small.

In some embodiments, the positioning mechanism 6 includes a rod and a sliding body. The rod is configured to be retractable, and one end of the rod is mounted on the first leg assembly 2 or the fixed box 1; the sliding body is mounted on the other end of the rod. The sliding body has low friction resistance.

In some embodiments, the leg structure further includes a slider 7, which is disposed between the first leg assembly 2 and the second leg assembly 3. And/or, the slider 7 is disposed between the first leg assembly 2 and the fixed box 1.

In some embodiments, the slider 7 is made of nylon.

4 , in some embodiments, the first leg assembly 2 includes a first movable box 21 and a first vertical leg 22. The first end of the first movable box 21 is installed inside the fixed box 1; the first vertical leg 22 is installed at the second end of the first movable box 21 and is located outside the fixed box 1.

The first movable box body 21 is mainly formed by welding an upper sealing plate, a left sealing plate, a lower sealing plate, a right sealing plate and side sealing plates to form a box-shaped structure.

The first movable box body 21 is placed in the fixed box body 1 , and a nylon slider 7 is installed on the inner surface of the first movable box body 21 . The adjusting bolt is used to adjust the level of the first movable box body 21 and the gap with the fixed box body 1 .

4 , in some embodiments, the second leg assembly 3 includes a second movable box 31 and a second vertical leg 32. The first end of the second movable box 31 is installed inside the first leg assembly 2; the second vertical leg 32 is installed at the second end of the second movable box 31 and is located outside the fixed box 1.

The second movable box body 31 is mainly formed by welding an upper sealing plate, a left sealing plate, a lower sealing plate, a right sealing plate and side sealing plates to form a box-shaped structure.

The second movable box 31 has a similar structure to the first movable box 21 , except that a cross section of the second movable box 31 is smaller than a cross section of the first movable box 21 .

The second movable box body 31 is placed in the cavity of the first movable box body 21 , and nylon sliders 7 are installed around the outer surface of the second movable box body 31 .

Another embodiment of the present invention provides an engineering vehicle, comprising a leg structure provided by any technical solution of the present invention.

One of the first leg assembly 2 and the second leg assembly 3 is located on the left side of the engineering vehicle, and the other is located on the right side of the engineering vehicle. The left side and the right side here are based on the left and right of the driver.

For example, the engineering vehicle includes two groups of first leg assemblies 2 and second leg assemblies 3, the first group is located near the front wheels of the engineering vehicle, and the second group is located near the rear wheels of the engineering vehicle.

In some embodiments, the engineering machinery includes fire trucks, small fire rescue vehicles and other military vehicles.

In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (11)

1. An engineering vehicle, characterized in that it comprises two groups of outrigger structures, each group of the outrigger structures comprising: Fixing the box (1); a first leg assembly (2), a first end of which is mounted inside the fixed box (1); and A second leg assembly (3), the first end of which is mounted inside the fixed box (1), and the first end of the second leg assembly (3) is nested inside the first end of the first leg assembly (2); The first group of outrigger structures are located near the front wheels of the engineering vehicle, and the second group of outrigger structures are located near the rear wheels of the engineering vehicle; For each group of the leg structures, one of the first leg assembly (2) and the second leg assembly (3) is located on one side in the width direction of the engineering vehicle, and the other is located on the other side in the width direction of the engineering vehicle; The leg structure further comprises: a first driving mechanism (4) installed inside the fixed box (1) and drivingly connected to the first leg assembly (2); the first driving mechanism (4) is located outside the first leg assembly (2); and A second driving mechanism (5) is installed inside the fixed box (1) and is drivingly connected to the second leg assembly (3); the second driving mechanism (5) is located outside the second leg assembly (3); Wherein, the first driving mechanism (4) and the second driving mechanism (5) are installed vertically and horizontally symmetrically. 2. The engineering vehicle according to claim 1, characterized in that the outrigger structure further comprises: The positioning mechanism (6) is arranged between the first leg assembly (2) and the fixed box (1); and/or the positioning mechanism (6) is arranged between the first leg assembly (2) and the second leg assembly (3). 3. The engineering vehicle according to claim 2, characterized in that the positioning mechanism (6) is constructed to be adjustable in length. 4. The engineering vehicle according to claim 3, characterized in that the positioning mechanism (6) comprises: An adjusting bolt is threadedly connected to the first supporting leg assembly (2) or the second supporting leg assembly (3). 5. The engineering vehicle according to claim 3, characterized in that the positioning mechanism (6) comprises: A rod member is configured to be retractable, and one end of the rod member is mounted on the first leg assembly (2) or the fixed box (1) or the second leg assembly (3); and The rolling element is installed on the other end of the rod. 6. The engineering vehicle according to claim 3, characterized in that the positioning mechanism (6) comprises: A rod member is configured to be retractable, and one end of the rod member is mounted on the first leg assembly (2) or the fixed box (1) or the second leg assembly (3); and The sliding body is installed on the other end of the rod. 7. The engineering vehicle according to claim 1, characterized in that the outrigger structure further comprises: The sliding block (7) is arranged between the first leg assembly (2) and the second leg assembly (3); and/or is arranged between the first leg assembly (2) and the fixed box (1). 8. The engineering vehicle according to claim 7, characterized in that the sliding block (7) is made of nylon. 9. The engineering vehicle according to claim 1, characterized in that the first leg assembly (2) comprises: a first movable box (21), a first end of which is mounted inside the fixed box (1); and A first vertical support leg (22) is mounted on the second end of the first movable box (21) and is located outside the fixed box (1). 10. The engineering vehicle according to claim 1, characterized in that the second leg assembly (3) comprises: a second movable box (31), a first end of which is mounted inside the first leg assembly (2); and The second vertical support leg (32) is mounted on the second end of the second movable box (31) and is located outside the fixed box (1). 11. The engineering vehicle according to claim 1, characterized in that the engineering vehicle comprises a fire truck.