Support leg arrangement and engineering machine

Abstract

The application belongs to the field of engineering mechanical equipment, and particularly relates to a support leg device and an engineering machine. The support leg device comprises a fixed support leg box, a fixed support and a movable support leg. The movable support leg comprises a support leg body and a horizontal oil cylinder. The support leg body is movably embedded in the fixed support leg box. An oil cylinder mounting support is arranged on the horizontal oil cylinder and connected with the fixed support on the fixed support leg box. A pipeline is connected between the horizontal oil cylinder and the oil cylinder horizontal support. When the horizontal oil cylinder needs to be repaired due to failure, the support leg body, the horizontal oil cylinder and the oil cylinder horizontal support can be separated from the fixed support leg box by separating the front end of the oil cylinder horizontal support from the fixed support. In other words, the pipeline between the horizontal oil cylinder and the oil cylinder horizontal support does not need to be removed. The pipeline removal is a relatively complicated and time-consuming step. Therefore, time and labor are saved, and the working efficiency of the horizontal oil cylinder repair is improved.

Description

Technical Field

[0001] This application belongs to the mechanical field of engineering machinery and equipment, and specifically relates to a leg device and engineering machinery. Background Technology

[0002] Construction machinery such as cranes and aerial work platforms require outriggers to be deployed during operation to increase chassis stability. Existing outrigger systems consist of a fixed outrigger housing and movable outriggers built into the fixed outrigger housing. The deployment of the movable outriggers is achieved via horizontal hydraulic cylinders.

[0003] In existing technology, the rear end of the fixed outrigger box is welded with a cylinder mounting bracket for connecting the horizontal cylinder and the fixed outrigger box, and a pipeline connects the horizontal cylinder and the cylinder mounting bracket. When the horizontal cylinder and its internal pipes, lines, valves are damaged and need to be replaced or disassembled for repair, all the pipelines connecting the horizontal cylinder and the horizontal cylinder bracket must be disconnected before the movable outrigger can be disassembled, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this application is to provide an outrigger device and engineering machinery designed to facilitate the disassembly of a horizontal hydraulic cylinder.

[0005] To achieve the above objectives, this application provides a support leg device, comprising: The fixed outrigger box has a fixed support at the rear end; The movable outrigger is movably fitted into the fixed outrigger box. The movable outrigger includes an outrigger body and a horizontal hydraulic cylinder for driving the outrigger body. A cylinder mounting bracket is installed at the rear end of the horizontal cylinder and detachably connected to the front end of the fixed bracket.

[0006] In some embodiments, the fixed support includes: The mounting part is located behind the rear end of the fixed support leg box, and the front side of the mounting part is provided with a stiffening plate for connecting the hydraulic cylinder mounting support. The connecting part connects the mounting part to the rear end of the fixed support leg box.

[0007] In some embodiments, the cylinder mounting support includes two horizontal plates that are parallel to and securely connected to the ribs, and the number of the horizontal plates is two, while the number of the ribs is multiple, with the multiple ribs located between the two horizontal plates.

[0008] In some embodiments, the mounting portion extends along the spacing direction of the two cross plates and is capable of covering the gap between the two cross plates.

[0009] In some embodiments, the connecting portion extends along the spacing direction of the two cross plates and is capable of covering the gap between the two cross plates.

[0010] In some embodiments, the cylinder mounting bracket further includes a vertical plate disposed between the two horizontal plates and connecting the two horizontal plates.

[0011] In some embodiments, there are two vertical plates, with an installation gap between them, and the rear end of the horizontal cylinder can extend into the installation gap and be securely connected to the two vertical plates.

[0012] In some embodiments, the cylinder mounting bracket further includes a base plate with an extension hole, the vertical plate and the horizontal plate are both vertically mounted on the rear side of the base plate, and the mounting gap is aligned with the extension hole.

[0013] In some embodiments, the front end of the cylinder mounting bracket is provided with reinforcing ribs.

[0014] This application also provides an engineering machine including the outrigger device described above.

[0015] The outrigger device and engineering machinery provided by this application have the following beneficial effects through the above technical solutions: The movable outrigger is movably fitted into the fixed outrigger box. The horizontal cylinder of the movable outrigger extends rearward from the fixed outrigger box and is mounted on a cylinder mounting bracket. A pipeline connects the horizontal cylinder and the cylinder mounting bracket, and the front ends of the cylinder mounting bracket and the fixed bracket are detachably connected. When the horizontal cylinder malfunctions, simply separating the cylinder mounting bracket from the fixed bracket allows the horizontal cylinder, along with its mounting bracket, to be pulled forward from the fixed outrigger box for maintenance. This eliminates the need to remove the pipeline between the horizontal cylinder and the cylinder mounting bracket, allowing the movable outrigger to be removed from the fixed outrigger box, thus saving time and effort and improving work efficiency.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the support leg device according to a specific embodiment of this application; Figure 2This is a structural schematic diagram of the outrigger device from another perspective according to a specific embodiment of this application; Figure 3 This is a structural schematic diagram of the fixed support according to a specific embodiment of this application; Figure 4 This is a schematic diagram of the structure of the hydraulic cylinder mounting support according to a specific embodiment of this application.

[0018] Explanation of reference numerals in the attached figures 100. Outrigger device; 1. Fixed outrigger box; 2. Outrigger body; 3. Horizontal cylinder; 4. Fixed support; 41. Mounting part; 42. Connecting part; 5. Cylinder mounting support; 51. Horizontal plate; 52. Vertical plate; 53. Base plate; 54. Protrusion hole; 55. Reinforcing rib; 56. Installation gap; 6. Rib plate. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] The outrigger device 100 and the engineering machinery terminology section according to this application are described below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a specific embodiment of this application provides a support leg device 100, including a fixed support leg box 1, a movable support leg, and a cylinder mounting bracket 5. The fixed support leg box 1 is provided with a fixed bracket 4 at its rear end. The movable support leg is movably fitted into the fixed support leg box 1. The movable support leg includes a support leg body 2 and a horizontal cylinder 3 for driving the support leg body 2. The cylinder mounting bracket 5 is installed at the rear end of the horizontal cylinder 3 and is detachably connected to the front end of the fixed bracket 4.

[0022] The outrigger device 100 is used to improve the chassis stability of construction machinery during operation. Specifically, during operation, the movable outrigger extends forward and unfolds from the fixed outrigger box 1. The movable outrigger includes an outrigger body 2 and a horizontal cylinder 3. The outrigger body 2 is movably fitted into the fixed outrigger box 1. The horizontal cylinder 3 extends rearward from the fixed outrigger box 1 and is provided with a cylinder mounting bracket 5, which is connected to a fixed bracket 4 on the rear end of the fixed outrigger box 1. A pipeline connects the horizontal cylinder 3 and the cylinder horizontal bracket. When the horizontal cylinder 3 malfunctions and needs repair, the outrigger body 2, the horizontal cylinder 3, and the horizontal cylinder support can be separated from the fixed support 4 to remove them from the fixed outrigger box 1. In other words, there is no need to remove the pipeline between the horizontal cylinder 3 and the horizontal cylinder support. Removing the pipeline is a tedious and time-consuming step. Therefore, the outrigger device 100 of this application facilitates the disassembly and maintenance of the horizontal cylinder 3, thereby saving time and effort and improving the work efficiency of the maintenance of the horizontal cylinder 3.

[0023] It should be noted that the connection between the cylinder mounting bracket 5 and the front end of the fixed bracket 4 is also a key feature to facilitate the disassembly of the horizontal cylinder 3, thereby preventing the fixed bracket 4 from interfering with the forward pulling out of the cylinder mounting bracket 5.

[0024] It should be noted that, unless otherwise stated, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. For ease of description, in the specific embodiments of this application, the length direction of the fixed leg box 1 is defined as the front-back direction, the width direction of the fixed leg box 1 is defined as the left-right direction, the height direction of the fixed leg box 1 is defined as the up-down direction, the movable leg is inserted into the fixed leg box 1 along the front-back direction, and the specific orientations of "upper," "lower," "left," "right," "front," and "rear" are indicated by arrows in the accompanying drawings.

[0025] like Figures 1 to 3 As shown, in some embodiments, the fixed support 4 includes a mounting part 41 and a connecting part 42. The mounting part 41 is located behind the rear end of the fixed support leg box 1, and the front side of the mounting part 41 is provided with a stiffening plate 6 for connecting the hydraulic cylinder mounting support 5. The connecting part 42 connects the mounting part 41 and the rear end of the fixed support leg box 1.

[0026] Furthermore, there are two fixed supports 4, symmetrically arranged on the left and right sides of the fixed outrigger housing 1. The connecting part 42 of the left fixed support 4 is connected to the left side wall of the fixed outrigger housing 1 and extends rearward, while the mounting part 41 of the left fixed support 4 is connected to the front end of the connecting part 42. The connecting part 42 of the right fixed support 4 is connected to the right side wall of the fixed outrigger housing 1 and extends rearward, while the mounting part 41 of the right fixed support 4 is connected to the front end of the connecting part 42. By setting two fixed supports 4, the connection between the fixed supports 4 and the horizontal cylinder 3 support is strengthened, thereby improving the stability of the movable outrigger during operation.

[0027] Specifically, the fixed support 4 is a bent plate structure. The mounting part 41 of the fixed support 4 is formed by extending and bending the connecting part 42. The inner side of the connecting part 42 of the left fixed support 4 is attached to and welded to the outer side of the left side wall of the fixed leg box 1. The connecting part 42 of the left fixed support 4 extends backward, and the mounting part 41 of the left fixed support 4 extends to the right. The inner side of the connecting part 42 of the right fixed support 4 is attached to and welded to the outer side of the right side wall of the fixed leg box 1. The connecting part 42 of the right fixed support 4 extends backward, and the mounting part 41 of the right fixed support 4 extends to the left.

[0028] like Figure 3 and Figure 4 As shown, in some embodiments, the cylinder mounting bracket 5 includes a horizontal plate 51 that is parallel to and securely connected to the stiffening plate 6.

[0029] Specifically, both the stiffening plate 6 and the horizontal plate 51 are arranged horizontally. Fasteners pass through the horizontal plate 51 and the stiffening plate 6 in the vertical direction to achieve a detachable connection between the cylinder mounting support 5 and the fixed support 4. Since the fixed support 4 is set on the periphery of the cylinder mounting support 5, the fixed support 4 does not affect the insertion and removal of the fasteners in the vertical direction. It can be seen that setting fasteners that extend in the vertical direction is beneficial to the installation and removal of the cylinder mounting support 5 and the fixed support 4.

[0030] Furthermore, the stiffening plate 6 extends in the left-right direction to the bend of the connecting part 42 and the mounting part 41 to strengthen the bend and thus improve the strength of the fixed support 4.

[0031] like Figures 1 to 4 As shown, in some embodiments, there are two horizontal plates 51 and multiple stiffening plates 6. The multiple stiffening plates 6 are arranged at intervals in the vertical direction and are all located between two horizontal plates 51. In other words, multiple stiffening plates 6 and multiple horizontal plates 51 are set to realize the connection between the hydraulic cylinder mounting support 5 and the fixed support 4. It can be seen that the force distributed on each stiffening plate 6 and each horizontal plate 51 is reduced, thereby improving the connection strength between the hydraulic cylinder mounting support 5 and the fixed support 4.

[0032] Furthermore, the height of the mounting part 41 in the vertical direction is greater than the distance between the two horizontal plates 51 in the vertical direction, so as to cover the gap between the two horizontal plates 51. This arrangement allows the horizontal plates 51 to abut against the mounting part 41, so that the mounting part 41 provides limiting support for the horizontal plates 51, thereby achieving the installation and positioning of the hydraulic cylinder mounting bracket 5 in the front-rear direction and strengthening the rigidity of the horizontal plates 51 in the vertical direction.

[0033] Furthermore, the height of the connecting part 42 in the vertical direction is greater than the distance between the two horizontal plates 51 in the vertical direction, so as to cover the gap between the two horizontal plates 51. This arrangement allows the horizontal plates 51 to abut against the connecting part 42, so that the mounting part 41 can provide limiting support for the horizontal plates 51, thereby achieving the installation and positioning of the hydraulic cylinder mounting bracket 5 in the left and right directions and strengthening the hydraulic cylinder mounting bracket 5 in the vertical direction.

[0034] like Figure 4 As shown, in some embodiments, the cylinder mounting support 5 further includes a vertical plate 52 disposed between and connecting the two horizontal plates 51, so as to connect the two horizontal plates 51 into one unit in the vertical direction, thereby strengthening the rigidity of the horizontal plates 51 in the vertical direction, and thus strengthening the overall strength and rigidity of the cylinder mounting support 5.

[0035] Furthermore, there are two vertical plates 52, which are arranged at intervals in the left and right directions to strengthen the connection between the two horizontal plates 51, thereby further strengthening the rigidity of the horizontal plates 51 in the up and down directions, and thus strengthening the overall strength and rigidity of the cylinder mounting support 5.

[0036] Specifically, an installation gap 56 is formed between the two vertical plates 52. The rear end of the horizontal cylinder 3 can extend into the installation gap 56 and be fastened to the two vertical plates 52. The fastener passes through the two vertical plates 52 and the rear end of the horizontal cylinder 3 in the left-right direction. With this configuration, the installation gap 56 between the two vertical plates 52 can be used to position the horizontal cylinder 3 and the cylinder mounting support 5 during the initial installation, thereby facilitating the assembly of the horizontal cylinder 3 and enhancing the stability of the horizontal cylinder 3 in the left-right direction.

[0037] like Figure 4 As shown, in some embodiments, the cylinder mounting bracket 5 further includes a base plate 53, and the vertical plate 52 and the horizontal plate 51 are both vertically mounted on the rear side of the base plate 53 to connect the vertical plate 52 and the horizontal plate 51 into one piece, thereby strengthening the rigidity of the horizontal plate 51 in the vertical direction and strengthening the rigidity of the vertical plate 52 in the horizontal direction, thereby strengthening the overall strength and rigidity of the cylinder mounting bracket 5.

[0038] Specifically, the base plate 53 has an extension hole 54, and the mounting gap 56 between the two vertical plates 52 is aligned with the extension hole 54 in the front-to-back direction. This arrangement allows for the initial installation and positioning of the horizontal cylinder 3 and the cylinder mounting support 5 through the extension hole 54, thereby facilitating the assembly of the horizontal cylinder 3 and enhancing the stability of the horizontal cylinder 3 in the left-to-right direction.

[0039] Furthermore, the distance between the mounting part 41 and the rear end of the fixed leg box 1 in the front-to-back direction is less than or equal to the width of the cylinder mounting support 5 in the front-to-back direction, so that after the cylinder mounting support 5 is connected to the fixed support 4, the base plate 53 of the cylinder mounting support 5 can be located inside the fixed leg box 1, thereby avoiding interference between the fixed leg box 1 and the base plate 53 when the cylinder mounting support 5 and the horizontal cylinder 3 are pulled out of the fixed leg box 1, thus facilitating the rapid removal of the cylinder mounting support 5 and the horizontal cylinder 3 from the fixed leg box 1.

[0040] It should be noted that the fasteners used in this application include one or more of the following: bolts, nuts, screws, pins, etc.

[0041] like Figure 4 As shown, in some embodiments, the front side of the substrate 53 is provided with reinforcing ribs 55 to further strengthen the strength of the substrate 53, thereby strengthening the strength of the cylinder mounting bracket 5.

[0042] A specific embodiment of this application also provides an engineering machine, including a outrigger device 100. Since the engineering machine employs all embodiments of the outrigger device 100 described above, it possesses all the beneficial effects brought by the outrigger device 100. The engineering machine includes cranes, aerial work platforms, pump trucks, etc.

[0043] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A support leg device, characterized in that, include: The fixed leg box (1) has a fixed support (4) at the rear end. A movable outrigger is movably fitted into the fixed outrigger box (1). The movable outrigger includes an outrigger body (2) and a horizontal hydraulic cylinder (3) for driving the outrigger body (2). The cylinder mounting bracket (5) is installed at the rear end of the horizontal cylinder (3) and detachably connected to the front end of the fixed bracket (4).

2. The outrigger device according to claim 1, characterized in that, The fixed support (4) includes: The mounting part (41) is located behind the rear end of the fixed support leg box (1), and the front side of the mounting part (41) is provided with a stiffening plate (6) for connecting the hydraulic cylinder mounting bracket (5); and The connecting part (42) connects the mounting part (41) to the rear end of the fixed leg box (1).

3. The outrigger device according to claim 2, characterized in that, The cylinder mounting support (5) includes a horizontal plate (51) that is parallel to and fastened to the rib plate (6). There are two horizontal plates (51) and multiple rib plates (6). The multiple rib plates (6) are located between two horizontal plates (51).

4. The outrigger device according to claim 3, characterized in that, The mounting part (41) extends along the spacing direction of the two horizontal plates (51) and is able to cover the gap between the two horizontal plates (51).

5. The outrigger device according to claim 3, characterized in that, The connecting part (42) extends along the spacing direction of the two horizontal plates (51) and is able to cover the gap between the two horizontal plates (51).

6. The outrigger device according to claim 3, characterized in that, The cylinder mounting bracket (5) also includes a vertical plate (52) disposed between the two horizontal plates (51) and connecting the two horizontal plates (51).

7. The outrigger device according to claim 6, characterized in that, There are two vertical plates (52), and an installation gap (56) is formed between the two vertical plates (52). The rear end of the horizontal cylinder (3) can extend into the installation gap (56) and be fastened to the two vertical plates (52).

8. The outrigger device according to claim 7, characterized in that, The cylinder mounting bracket (5) also includes a base plate (53) with an extension hole (54). The vertical plate (52) and the horizontal plate (51) are both vertically mounted on the rear side of the base plate (53). The mounting gap (56) is aligned with the extension hole (54).

9. The outrigger device according to any one of claims 1 to 8, characterized in that, The front end of the cylinder mounting bracket (5) is provided with reinforcing ribs (55).

10. An engineering machinery, characterized in that, Includes the outrigger device (100) according to any one of claims 1 to 8.

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