Landing leg frame assembly for engineering machinery and engineering machinery comprising same

Abstract

The utility model relates to a supporting leg frame assembly for engineering machinery and the engineering machinery comprising the supporting leg frame assembly. The engineering machinery comprises a bucket and a lower vehicle frame (1), and the landing leg frame assembly comprises a landing leg frame (2) connected to the lower vehicle frame (1) and a bucket bracket (3) arranged on the landing leg frame (2). The dipper bracket (3) is configured to be adapted for the dipper to rest thereon when the dipper is in a retracted state. The supporting leg frame assembly is suitable for placing the bucket on the bucket bracket, so that even if an oil cylinder for driving the bucket to be kept in a folded state is out of order, the bucket can be ensured not to directly fall down, and accidents caused by the falling can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery parts, in particular to a leg support assembly used for engineering machinery and engineering machinery comprising the leg support assembly. Background Art

[0002] An excavator is a widely used construction machinery. Its excavation bucket (also called a digging bucket) performs excavation operations by extending and retracting the oil cylinder under the drive of the dipper arm. When the construction machinery travels long distances, such as when transferring sites, the dipper arm and the digging bucket are in a retracted state.

[0003] When the excavator in the prior art travels a long distance, the bucket has nowhere to be placed and needs to be controlled by the oil cylinder all the time. Once the oil cylinder fails, the bucket is easy to fall under the effect of gravity and cause an accident.

[0004] As a common type of excavator, a wheeled excavator includes a lower frame and a digging bucket and a bulldozer placed or installed at both ends along the direction of travel of the excavator. Among them, for a wheeled excavator with outriggers at one end and a bulldozer at the other end (such as a front outrigger and a rear bulldozer), the digging bucket has nowhere to be placed on the outrigger side and is prone to fall under the action of gravity, causing an accident.

[0005] Typically, the boarding position of existing construction machinery may not ensure that the operator can get on the vehicle conveniently at any time. For example, when working on site, the position may be in a state where it is not easy to get on the vehicle (for example, the ground is excavated too low), and the operator cannot get on and off the vehicle conveniently to perform work.

[0006] In addition, the existing excavator's towing hole for hoisting the lower frame and towing rescue when the whole vehicle fails has the problem of being inconveniently located (for example, it is not easy to install a hook). Utility Model Content

[0007] The purpose of the present invention is to solve at least one of the above problems and / or other problems existing in the prior art.

[0008] To achieve the above object, according to one aspect of the utility model, a leg support assembly for an engineering machine is provided, wherein the engineering machine comprises a bucket and a lower frame, and the leg support assembly comprises a leg support and a bucket bracket disposed on the leg support. The leg support is connected to the lower frame; and the bucket bracket is configured to be suitable for the bucket to be placed thereon when the bucket is in a retracted state.

[0009] According to an example of the present invention, the bucket bracket has a bracket top surface for the bucket to rest on and adapted to a corresponding outer contour of the bucket.

[0010] According to an example of the present utility model, the leg frame has a first side surface facing away from the lower frame, and the bucket bracket is connected to the first side surface.

[0011] According to an example of the present utility model, the bucket bracket includes two side plates arranged at a distance from each other, each of the side plates has a top surface, so that the top surfaces of the two side plates together constitute the bracket top surface.

[0012] According to an example of the present utility model, each of the side panels further has a bottom surface arranged opposite to the top surface, and the height of the bottom surface is higher than the bottom surface height of the leg support.

[0013] According to an example of the utility model, each of the side panels is further provided with a through hole at its end away from the leg support frame, and the through hole is used for towing or lifting the lower frame connected to the leg support frame.

[0014] According to an example of the present utility model, the bucket bracket also includes a reinforcement structure arranged between the two side plates.

[0015] According to an example of the present invention, the reinforcement structure includes a first section, which extends horizontally along the traveling direction of the engineering machinery so as to be suitable for being used as a tread surface.

[0016] According to an example of the present invention, the reinforcement structure is configured as a reinforcing plate formed by bending, and the reinforcing plate includes the first section and a second section, and the second section extends vertically downward at one end of the first section close to the through hole.

[0017] According to another aspect of the utility model, a construction machinery is provided, which includes a bucket, a lower frame, a bulldozer and a leg frame assembly as described above, wherein the bulldozer and the leg frame assembly are respectively connected to both sides of the lower frame along the travel direction of the construction machinery, and the bucket bracket of the leg frame assembly is suitable for the bucket to be placed thereon when the bucket is in a folded state.

[0018] The leg support assembly of the utility model comprises a leg support and a bucket bracket. By arranging the bucket bracket on the leg support for placing the bucket, compared with the prior art, even if the oil cylinder driving the bucket to maintain the retracted state fails, the bucket will not fall directly because it is placed on the bucket bracket, thereby avoiding accidents. In addition, the leg support assembly has a simple structure, low cost, better processability, and can meet the requirements of mechanical properties while also meeting the functional requirements. Further, the first section extending approximately horizontally between the two side panels can be used as a stepping surface for operators to get on the vehicle, so that the bucket bracket integrates the function of an auxiliary stepping point for getting on the vehicle. Moreover, each side panel also has a through hole used as a traction hole and / or a lifting hole, which is arranged at the front end of the side panel away from the leg support, so that it extends more to the outside of the engineering machinery and is easier for the operator to access and install the hook. Further, the reinforcing plate formed by bending as a reinforcing structure can ensure the strength of the bucket bracket, especially increase the strength near the through hole on the side panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0020] Figure 1 A perspective view showing a leg support assembly according to an exemplary embodiment of the present invention installed on a lower frame of a construction machine.

[0021] Figure 2 Show Figure 1 An enlarged view of point A of the outrigger assembly is shown.

[0022] Figure 3 Show Figure 1 Exploded view of the outrigger assembly shown.

[0023] Description of reference numerals:

[0024] 1. Lower frame; 2. Outrigger frame; 21. First side; 3. Bucket bracket; 31. Bracket top surface; 32. Side plate; 321. Top surface; 322. Bottom surface; 323. Through hole; 33. Reinforcement structure; 331. First section; 332. Second section. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, it is contemplated that any combination of the features and elements described below may be used to implement the present invention, regardless of whether they relate to different embodiments.

[0026] In the following, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements, and are not used to limit the nature, order or number of these elements. The terms "including" and "having" are used to express an open-ended inclusive meaning, and mean that there may be additional elements / components in addition to the listed elements / components.

[0027] In the description of the present utility model, the expressions "upper", "top", "lower", "bottom", "above", "below", "above", "below", etc. used are relative to the ground on which the construction machinery operates, where the position closer to the ground is "lower" or "bottom", and the opposite is "up" or "top".

[0028] The outrigger assembly according to the concept of the utility model is suitable for an excavator, in particular for a wheeled excavator having both a bucket and a front outrigger. Figure 1 In order to simplify the drawings, the remaining components of the wheeled excavator except the lower frame 1 and the leg frame assembly are not shown. However, it can be understood that the wheeled excavator generally also includes a bucket, a dipper arm, and a cylinder for driving the bucket. As an example, a dozer is provided at the rear end of the lower frame 1, and a leg is provided at the front end, thereby forming a wheeled excavator including a front leg, a bucket, and a rear dozer, wherein a leg frame 2 connected to the lower frame 1 is provided on the side where the bucket is located, and a foldable and lowerable leg (not shown in the figure) is provided on the leg frame 2, so that the leg can be lowered to the ground when needed to support the excavator. In the utility model, a bucket support 3 for supporting the excavator bucket is provided on the leg frame 2, forming a leg frame assembly. Figures 1 to 3 The figure shows a leg frame assembly according to an embodiment of the utility model, which mainly includes a leg frame 2 and a bucket bracket 3.

[0029] refer to Figure 1-3As shown, the outrigger 2 may include a first side surface 21 and a second side surface (not shown) which are arranged opposite to each other in the traveling direction of the wheeled excavator. The second side surface faces the lower frame 1. The bucket bracket 3 is arranged on the first side surface 21. In some other embodiments, the outrigger 2 may also have a top surface, and the bucket bracket 3 may be arranged on the top surface and / or the first side surface 21 according to the different positions of the bucket in the retracted state, which all belong to the case of "the bucket bracket 3 is arranged on the outrigger 2".

[0030] In order to increase the contact surface between the bucket bracket 3 and the bucket and prevent the bucket from sliding off the bucket bracket 3 when the wheeled excavator bumps during driving, the bucket bracket 3 may also have a bracket top surface 31 for the bucket to rest on and adapted to the corresponding outer contour of the bucket, such as Figure 1 For example, when the bucket is placed on the bucket bracket 3, the portion of the bucket in contact with the bucket bracket 3 has a curved surface or a flat surface, and the bracket top surface 31 of the bucket bracket 3 can also be constructed into a corresponding curved surface or a flat surface, so that the portion of the bucket in contact can contact the bracket top surface 31 as much as possible.

[0031] refer to Figure 2 As shown, the bucket bracket 3 may further include two side plates 32 spaced apart from each other. Each side plate 32 may have a side surface (not shown) and a top surface 321, wherein the side surface is configured to be suitable for being connected to the first side surface 21 by welding or other fixing methods. And the side plate 32 protrudes outward from the first side surface 21. Preferably, the two side plates 32 may be arranged side by side and in parallel, and the top surfaces 321 of the two side plates 32 may jointly constitute the bracket top surface 31.

[0032] A bottom surface 322 opposite to the top surface 321 is formed at the bottom of the two side plates 32. The height of the bottom surface 322 can be higher than the bottom surface of the outrigger 2, so that obstacles will not be prevented from passing under the outrigger 2 during the driving or operation of the wheeled excavator. Figure 3 As a preferred embodiment, the height of the bottom surface 322 close to the leg frame 2 is lower than the height of the bottom surface 322 away from the leg frame 2, but is still higher than the bottom surface of the leg frame 2, which can increase the connection strength between the side plate 32 and the leg frame 2, thereby providing stronger support for the bucket.

[0033] Preferably, each side plate 32 also has a through hole 323 used as a towing hole and / or a lifting hole. The through hole 323 can be arranged at the front end of the side plate 32 away from the leg frame 2. This arrangement makes the towing hole and / or the lifting hole extend more toward the outside of the engineering machine, so that it is easier for the operator to access and easier to install the hook.

[0034] refer to Figure 2 and Figure 3As shown, the two side plates 32 are independently connected to the leg frame 2. In order to improve the strength of the entire bucket bracket 3, the bucket bracket 3 may also include, for example Figure 2 and Figure 3 The reinforcement structure 33 is shown.

[0035] Specifically, the reinforcement structure 33 may include a first section 331 that extends horizontally forward along the travel direction of the construction machinery (wheeled excavator), thereby allowing the first section 331 to be approximately on a horizontal plane and to be used as a tread surface for operators to get on the vehicle.

[0036] Preferably, the reinforcement structure 33 is configured as a reinforcement plate formed by bending. Figure 3 As shown, the reinforcing structure may also include a second section 332. The second section 332 extends vertically downward from the end of the first section 331 away from the leg frame 2 (i.e., the end close to the through hole 323). The first end and the second end of the reinforcing structure 33 in the second direction (left-right direction) transverse to the traveling direction of the engineering machinery may be respectively connected to the two side plates 32 by welding or other fixing methods, thereby being supported between the two side plates 22 to improve the strength of the entire bucket support. On the other hand, the reinforcing structure 33, especially the second section 332, is arranged close to the through hole 323, which can also increase the strength of the side plate 32 at the through hole 323 during towing or hoisting.

[0037] The utility model also provides an engineering machine including the above-mentioned outrigger assembly, such as a wheeled excavator. The engineering machine may also include a bulldozer, a lower frame and a bucket, wherein the bulldozer and the outrigger assembly are respectively connected to both sides of the lower frame 1, and the bucket bracket 3 of the outrigger assembly is suitable for the bucket to be placed thereon when the bucket is in a retracted state.

[0038] Industrial Applicability

[0039] The leg support assembly according to the utility model can be used for engineering machinery such as excavators, and is particularly suitable for wheeled excavators that integrate a bucket and a shovel. However, it should be understood that the leg support assembly according to the utility model can also be used for other engineering machinery that needs to support a working tool (such as a bucket, etc.) during driving.

[0040] The lower frame 1 in the prior art does not have a bracket for placing the excavator, or has a bracket with a complex structure directly mounted on the lower frame 1. Compared with the prior art, the leg frame 2 of the leg frame assembly of the utility model is connected to the lower frame 1, and a bucket bracket 3 for the bucket to rest on is arranged at the front end of the leg frame, so that the bucket can be placed during the driving of the engineering machinery. The bracket top surface 31 of the bucket bracket 3 is configured to be adapted to the corresponding outer contour of the bucket, which is conducive to more stable positioning of the bucket and prevents the bucket from falling due to bumps during the driving of the engineering machinery.

[0041] The bucket bracket 3 includes two side plates 32 spaced apart from each other. A reinforcing plate formed by bending is provided between the two side plates 32, which includes a first section 331 extending in the horizontal direction and a second section 332 extending in the vertical direction. On the one hand, the first section 331 can be configured as a stepping surface for operators to get on the vehicle, and on the other hand, the first section 331 and the second section 332 can be combined to strengthen the two side plates 32. A through hole 323 is also provided on the end of the side plate 32 away from the lower frame, which is convenient for installing tools for traction or lifting, such as hooks, etc.

[0042] In addition, the height of the bottom surface 322 of the side plate 32 is higher than the bottom surface height of the leg frame 2 , which facilitates obstacles to pass under the bucket bracket 3 .

[0043] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from the practice of the utility model disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the utility model is specified by the appended claims and their equivalents.

Claims

1. A leg support assembly for an engineering machine, the engineering machine comprising a bucket and a lower frame (1), characterized in that: The leg support assembly comprises: A leg support frame (2), the leg support frame (2) being connected to the lower frame (1); and A bucket bracket (3) is arranged on the leg frame (2), and the bucket bracket (3) is configured to be suitable for the bucket to be placed thereon when the bucket is in a retracted state.

2. The leg support assembly according to claim 1, characterized in that: The bucket bracket (3) has a bracket top surface (31) on which the bucket rests and which is adapted to the corresponding outer contour of the bucket.

3. The leg support assembly according to claim 2, characterized in that: The leg frame (2) has a first side surface (21) facing away from the lower frame (1), and the bucket bracket (3) is connected to the first side surface (21).

4. The leg support assembly according to claim 3, characterized in that: The bucket bracket (3) comprises two side plates (32) arranged at a distance from each other, each of the side plates (32) having a top surface (321), so that the top surfaces (321) of the two side plates (32) together constitute the bracket top surface (31).

5. The leg support assembly according to claim 4, characterized in that: Each of the side panels (32) also has a bottom surface (322) arranged opposite to the top surface (321), and the height of the bottom surface (322) is higher than the bottom surface height of the leg support (2).

6. The leg support assembly according to claim 4 or 5, characterized in that: Each of the side plates (32) is also provided with a through hole (323) at its end away from the leg support frame (2), and the through hole (323) is used for pulling or lifting the lower frame (1) connected to the leg support frame.

7. The leg support assembly according to claim 6, characterized in that: The bucket bracket (3) also includes a reinforcement structure (33) arranged between the two side plates (32).

8. The leg support assembly according to claim 7, characterized in that: The reinforcement structure (33) comprises a first section (331), wherein the first section (331) extends horizontally along the traveling direction of the engineering machine so as to be suitable for being used as a tread surface.

9. The leg support assembly according to claim 8, characterized in that: The reinforcement structure is configured as a reinforcing plate formed by bending, and the reinforcing plate comprises the first section (331) and the second section (332), wherein the second section (332) extends vertically downward at one end of the first section (331) close to the through hole (323).

10. An engineering machine, characterized in that: The engineering machinery comprises a bucket, a lower frame (1), a bulldozer and a leg frame assembly according to any one of claims 1 to 9, wherein the bulldozer and the leg frame assembly are respectively connected to two sides of the lower frame (1) along the travel direction of the engineering machinery, and the bucket bracket (3) of the leg frame assembly is suitable for the bucket to be placed thereon when the bucket is in a folded state.

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