Supporting leg height adjusting device and engineering machinery

Abstract

The utility model discloses a supporting leg height adjusting device and engineering machinery, a supporting leg comprises a supporting leg body and a supporting leg plate, and the supporting leg height adjusting device comprises a sliding assembly, an oil cylinder mounting seat and a vertical oil cylinder; the sliding assembly is in sliding insertion fit with the supporting leg body in the height direction, and the bottom end of the sliding assembly is installed on the supporting leg plate. The oil cylinder mounting seat is arranged on the peripheral wall of the supporting leg main body; one end of the vertical oil cylinder is detachably connected with the oil cylinder installation base and can change the position relative to the oil cylinder installation base in the height direction, and the other end of the vertical oil cylinder is connected with the supporting foot plate in a pivoted mode. The oil cylinder mounting seat and the vertical oil cylinder are mounted on the outer side surface of the supporting leg main body, so that more supporting leg overlapping amount can be allowed, and the structure is more stable and reliable; and the vertical oil cylinder moves in the height direction relative to the oil cylinder mounting seat, so that the support leg plate can be positioned at different heights, and the technical problem that the support leg assembly has no interchangeability due to different heights of different chassis girders can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery, and specifically relates to a leg height adjustment device and engineering machinery. Background Art

[0002] The outrigger is one of the main components of a truck-mounted crane. Its function is to increase the supporting base of the truck-mounted crane, reduce the tire load, and improve the anti-overturning stability of the vehicle, thereby increasing the lifting capacity. At present, truck-mounted cranes rely on vertical cylinders to drive the outriggers to extend to the ground and touch the ground. However, since the vertical cylinders are basically fixedly installed, when the chassis is replaced and the same outrigger assembly is installed, the vertical cylinder stroke will be too short, resulting in the outrigger plate being unable to touch the ground or the vertical cylinder stroke being too long, resulting in the technical problem of poor interchangeability of the entire outrigger assembly. Summary of the invention

[0003] The purpose of the present application is to provide a leg height adjustment device and an engineering machinery, so as to meet the installation requirements of chassis of different heights and have strong interchangeability.

[0004] In order to achieve the above-mentioned purpose, the present application provides a leg height adjustment device on one hand, wherein the leg comprises a leg body and a foot plate, and the leg height adjustment device comprises:

[0005] A sliding assembly is slidably plugged with the leg body in the height direction, and the bottom end of the sliding assembly is mounted on the leg plate;

[0006] A cylinder mounting seat, provided on the outer peripheral wall of the leg body; and

[0007] A vertical oil cylinder has one end detachably connected to the oil cylinder mounting seat and can change its position along the height direction relative to the oil cylinder mounting seat, and the other end of the vertical oil cylinder is pivotally connected to the support foot plate.

[0008] In some embodiments, the sliding assembly comprises:

[0009] The sliding column is inserted into the supporting leg body, the inner wall of the supporting leg body is provided with a sliding groove along the height direction, and the sliding column is provided with a sliding block which is slidably matched with the sliding groove.

[0010] In some embodiments, the sliding assembly further includes a plurality of blocks disposed in the sliding groove, and the plurality of blocks limit the sliding block in a lateral direction.

[0011] In some embodiments, the sliding assembly further includes a fixing member for connecting and fixing the sliding block and the sliding column.

[0012] In some embodiments, the cylinder mounting seat is provided with a plurality of mounting holes spaced apart in the height direction, a shaft sleeve is provided on the outer periphery of the vertical cylinder, and the cylinder mounting seat is further provided with a first locking member, which passes through the mounting holes and locks the cylinder mounting seat and the shaft sleeve.

[0013] In some embodiments, the cylinder mounting seat is further provided with a plurality of locking holes, and the plurality of locking holes are arranged on the same horizontal plane in a one-to-one correspondence with the plurality of mounting holes. The cylinder mounting seat is further provided with a connecting plate and a second locking member, and the second locking member sequentially connects the connecting plate and the locking holes, and the connecting plate connects the first locking member and the second locking member located in the same horizontal direction.

[0014] In some embodiments, the oil cylinder mounting seat is a hollow box structure with openings at upper and lower ends, the vertical oil cylinder penetrates the oil cylinder mounting seat in the height direction, and the mounting hole is opened on the side wall of the oil cylinder mounting seat.

[0015] In some embodiments, the vertical oil cylinder includes a cylinder body and a piston rod movably inserted in the cylinder body, and the shaft sleeve is arranged on the outer periphery of the cylinder body.

[0016] In some embodiments, a lug plate is provided on the support plate, and the bottom end of the vertical cylinder is pivotally connected to the lug plate.

[0017] A second aspect of the present application provides an engineering machinery, which includes the outrigger height adjustment device as described above.

[0018] Through the above technical solution, the leg height adjustment device provided by the embodiment of the present invention has the following beneficial effects:

[0019] The present application provides a cylinder mounting seat on the outer peripheral side of the leg body, which can allow a larger leg overlap amount, and the strength of the leg is not affected, making the structure more stable and reliable; and by making the vertical cylinder move in the height direction relative to the cylinder mounting seat, the sliding assembly and the leg slide relative to each other during the movement, so that the support foot plate can be at different heights. When the stroke of the vertical cylinder cannot meet the installation requirements, the height of the entire leg can be changed by driving the movement of the support foot plate through the movement of the entire vertical cylinder, thereby solving the technical problem that the leg assembly is not interchangeable due to the different heights of different chassis beams.

[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0022] Figure 1 This is a schematic diagram of the connection structure between the leg height adjustment device and the legs of the present application;

[0023] Figure 2 A schematic diagram of the connection between the leg height adjustment device and the legs of the present application;

[0024] Figure 3 for Figure 2 Schematic cross-sectional view of the middle AA part;

[0025] Figure 4 This is a schematic diagram of the structure of the vertical cylinder in the leg height adjustment device of the present application.

[0026] Description of Reference Numerals

[0027] 10 Leg body 41 Mounting hole

[0028] 11 Slideway 42 Locking hole

[0029] 20 Support plate 43 Connecting plate

[0030] 31 Sliding column 50 Vertical cylinder

[0031] 32 Slider 51 Bushing

[0032] 33 Block 60 Ear Plate

[0033] 34 fixing member 70 first locking member

[0034] 40 Cylinder mounting seat 80 Second locking piece DETAILED DESCRIPTION

[0035] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0036] The following describes the outrigger height adjustment device and the engineering machine according to the present application with reference to the accompanying drawings.

[0037] like Figure 1 and Figure 2As shown, the present application provides a leg height adjustment device, the leg includes a leg body 10 and a foot plate 20, wherein the foot plate 20 is arranged at the bottom of the leg body 10 and is used to support the leg body 10. The leg height adjustment device of the present application includes a sliding assembly, a cylinder mounting seat 40 and a vertical cylinder 50; wherein the sliding assembly and the leg body 10 are slidably plugged and matched in the height direction, and the bottom end of the sliding assembly is mounted on the foot plate 20; the cylinder mounting seat 40 is arranged on the outer peripheral wall of the leg body 10; one end of the vertical cylinder 50 is detachably connected to the cylinder mounting seat 40 and can change its position relative to the cylinder mounting seat 40 in the height direction, and the other end of the vertical cylinder 50 is pivotally connected to the foot plate 20; when the piston rod stroke of the vertical cylinder 50 cannot meet the installation requirements of different chassis heights, at this time, the vertical cylinder 50 can be driven to move in the height direction relative to the cylinder mounting seat 40, thereby driving the foot plate 20 to move in the height direction to adjust the height of the entire leg assembly.

[0038] The present application installs the cylinder mounting base 40 and the vertical cylinder 50 on the outer side of the outrigger body 10, which can allow a larger amount of outrigger overlap, and the strength of the outrigger is not affected, making the structure more stable and reliable; and by allowing the vertical cylinder 50 to move in the height direction relative to the cylinder mounting base 40, the support foot plate 20 can be placed at different heights. When the stroke of the vertical cylinder cannot meet the installation requirements, the height of the entire outrigger can be changed by driving the movement of the support foot plate 20 through the movement of the entire vertical cylinder 50, thereby solving the technical problem that the outrigger assembly is not interchangeable due to the different heights of different chassis beams.

[0039] Furthermore, the sliding assembly includes a sliding column 31 inserted into the leg body 10; the inner wall of the leg body 10 is provided with a sliding groove 11 along the height direction, and the sliding column 31 is provided with a slider 32 that slides with the sliding groove 11. Figure 1 and Figure 2 As shown, the leg body includes a horizontal leg and a vertical leg, the sliding column 31 is adapted to the shape of the vertical leg, the vertical leg has a hollow cavity, and a slide groove 11 extending along the height direction starting from the inner wall of the vertical leg, the sliding column 31 is inserted into the vertical leg, and the sliding column 31 slides up and down in the slide groove 11 through the slider 32. Since the bottom end of the sliding column 31 is connected to the support foot plate 20, the support foot plate 20 can move up and down with the sliding column 31.

[0040] like Figure 3 As shown, the sliding assembly also includes a plurality of blocks 33 disposed in the slide slot 11, and the plurality of blocks 33 limit the sliding block 32 in the lateral direction. The plurality of blocks 33 cooperate to limit the sliding direction of the sliding block 32 in the slide slot 11, and prevent the position of the sliding block 32 from being offset during the sliding process in the slide slot 11.

[0041] In some embodiments, the sliding assembly further includes a fixing member 34 for connecting and fixing the sliding block 32 and the sliding column 31. The fixing member 34 is a fixing bolt, which is used to strengthen the connection stability between the sliding block 32 and the sliding column 31.

[0042] In some embodiments, the oil cylinder mounting base 40 is provided with a plurality of mounting holes 41 spaced apart in the height direction. Figure 4 As shown, the outer periphery of the vertical oil cylinder 50 is provided with a shaft sleeve 51, and the oil cylinder mounting seat 40 is also provided with a first locking member 70, and the first locking member 70 penetrates the mounting hole 41 and locks the oil cylinder mounting seat 40 and the shaft sleeve 51. The present application replaces the technical solution of slotting the vertical oil cylinder 50 and cooperating with external components to change the height position of the vertical oil cylinder 50 in the prior art by welding the shaft sleeve 51 on the outer periphery of the vertical oil cylinder 50, and does not affect the strength of the vertical oil cylinder 50.

[0043] In some embodiments, the cylinder mounting base 40 is further provided with a plurality of locking holes 42, and the plurality of locking holes 42 are arranged one-to-one with the plurality of mounting holes 41 on the same horizontal plane. The cylinder mounting base 40 is further provided with a connecting plate 43 and a second locking member 80, and the second locking member 80 is sequentially connected through the connecting plate 43 and the locking holes 42, and the connecting plate 43 connects the first locking member 70 and the second locking member 80 located in the same horizontal direction.

[0044] like Figure 1 As shown, on one of the side panels of the cylinder mounting base 40, there are a row of mounting hole 41 assemblies and a row of locking hole 42 assemblies arranged in parallel, each row of mounting hole 41 assemblies includes a plurality of mounting holes 41 arranged at intervals along the height direction, each row of locking hole 42 assemblies includes a plurality of locking holes 42 arranged at intervals along the height direction, and the plurality of mounting holes 41 in each row of mounting hole 41 assemblies and the plurality of locking holes 42 in each row of locking hole 42 assemblies are opened in one-to-one correspondence. When the relative position between the vertical oil cylinder 50 and the oil cylinder mounting seat 40 needs to be changed, the vertical oil cylinder 50 is moved in the up-down direction, and the shaft sleeve 51 on the vertical oil cylinder 50 is inserted into the mounting hole 41 of the corresponding height, and the connecting plate 43 is installed on the shaft sleeve 51, and the shaft sleeve 51 and the connecting plate 43 are locked by a pin shaft; and the other end of the connecting plate 43 is provided with a pin hole corresponding to the locking hole 42, and a second locking member 80 is used to penetrate the pin hole and the locking hole 42 to connect the connecting plate 43 and the side wall of the oil cylinder mounting seat 40. In this embodiment, the presence of multiple locking holes 42 and the second locking member 80 can enhance the connection stability between the vertical oil cylinder 50 and the oil cylinder mounting seat 40.

[0045] Preferably, the oil cylinder mounting seat 40 is a box plate structure, specifically, the oil cylinder mounting seat 40 is a hollow box structure with openings at both ends, the vertical oil cylinder 50 passes through the oil cylinder mounting seat 40 in the height direction, and the mounting hole 41 is opened on the side wall of the oil cylinder mounting seat 40. Placing the entire oil cylinder mounting seat 40 beside one side of the vertical leg and passing the vertical oil cylinder 50 through the entire oil cylinder mounting seat 40 can not affect the overlap amount of the leg and make the strength of the leg unaffected.

[0046] In some embodiments, the vertical oil cylinder 50 includes a cylinder body and a piston rod movably inserted in the cylinder body, and a sleeve 51 is arranged on the outer periphery of the cylinder body. The sleeve 51 and the cylinder body are welded, and this installation method will not affect the cylinder body compared to directly opening a processing groove on the cylinder body.

[0047] In some embodiments, the foot plate 20 is provided with an ear plate 60, and the bottom end of the vertical oil cylinder 50 is pivotally connected to the ear plate 60. Specifically, the free end of the piston rod is pivotally connected to the ear plate 60, and when the position of the cylinder body is fixed, the piston rod moves up and down in the cylinder body, thereby driving the foot plate 20 to move up and down; when the stroke of the piston rod cannot meet the requirements, the sliding assembly can be used to drive the entire vertical oil cylinder 50 to move, so as to adjust the height of the foot plate 20.

[0048] The second aspect of the present application provides an engineering machine, which includes the outrigger height adjustment device as described above. The engineering machine may be a machine that needs to be equipped with outriggers in the prior art, such as a truck crane, a truck crane, and an aerial work vehicle. The engineering machine includes a chassis and outriggers for supporting the chassis. The height of the outriggers is adjusted by the outrigger height adjustment device, thereby adapting to chassis requirements of different heights.

[0049] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A leg height adjustment device, the leg comprising a leg body (10) and a foot plate (20), characterized in that: The leg height adjustment device comprises: A sliding assembly is slidably plugged into and matched with the leg body (10) in the height direction, and the bottom end of the sliding assembly is mounted on the leg plate (20); A cylinder mounting seat (40) is provided on the outer peripheral wall of the leg body (10); and A vertical oil cylinder (50) has one end detachably connected to the oil cylinder mounting seat (40) and can change its position along the height direction relative to the oil cylinder mounting seat (40), and the other end of the vertical oil cylinder (50) is pivotally connected to the support foot plate (20).

2. The leg height adjustment device according to claim 1, characterized in that: The sliding assembly comprises: The sliding column (31) is inserted into the supporting leg body (10), the inner wall of the supporting leg body (10) is provided with a sliding groove (11) along the height direction, and the sliding column (31) is provided with a sliding block (32) which is slidably matched with the sliding groove (11).

3. The leg height adjustment device according to claim 2, characterized in that: The sliding assembly further comprises a plurality of clamping blocks (33) arranged in the sliding groove (11), wherein the plurality of clamping blocks (33) limit the sliding block (32) in the lateral direction.

4. The leg height adjustment device according to claim 3, characterized in that: The sliding assembly also includes a fixing member (34) for connecting and fixing the sliding block (32) and the sliding column (31).

5. The leg height adjustment device according to claim 1, characterized in that: The oil cylinder mounting seat (40) is provided with a plurality of mounting holes (41) spaced apart in the height direction, the outer periphery of the vertical oil cylinder (50) is provided with a shaft sleeve (51), and the oil cylinder mounting seat (40) is also provided with a first locking member (70), the first locking member (70) passes through the mounting hole (41) and locks the oil cylinder mounting seat (40) and the shaft sleeve (51).

6. The leg height adjustment device according to claim 5, characterized in that: The oil cylinder mounting seat (40) is also provided with a plurality of locking holes (42), and the plurality of locking holes (42) and the plurality of mounting holes (41) are arranged on the same horizontal plane in a one-to-one correspondence. The oil cylinder mounting seat (40) is also provided with a connecting plate (43) and a second locking member (80), and the second locking member (80) is sequentially connected to the connecting plate (43) and the locking holes (42), and the connecting plate (43) connects the first locking member (70) and the second locking member (80) located in the same transverse direction.

7. The leg height adjustment device according to claim 5, characterized in that: The oil cylinder mounting seat (40) is a hollow box structure with openings at both ends; the vertical oil cylinder (50) penetrates the oil cylinder mounting seat (40) in the height direction; and the mounting hole (41) is provided on the side wall of the oil cylinder mounting seat (40).

8. The leg height adjustment device according to claim 7, characterized in that: The vertical oil cylinder (50) comprises a cylinder body and a piston rod movably inserted into the cylinder body, and the shaft sleeve (51) is arranged on the outer periphery of the cylinder body.

9. The leg height adjustment device according to any one of claims 1 to 8, characterized in that: The support plate (20) is provided with a lug plate (60), and the bottom end of the vertical oil cylinder (50) is pivotally connected to the lug plate (60).

10. An engineering machine, characterized in that: It comprises a leg height adjustment device according to any one of claims 1 to 9.

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