Excavator track assembly structure and excavator

Abstract

The utility model provides an excavator track assembly structure and an excavator. The excavator track assembly structure comprises a track frame, the track frame comprises a first chassis and a second chassis, the first chassis is parallel to the ground horizontal plane, the second chassis is formed by combining a first inclined plane and a second inclined plane, and the inclination angle between the first inclined plane and the ground horizontal plane is larger than that between the second inclined plane and the ground horizontal plane; the supporting chain wheel bracket is fixedly arranged on the second chassis, and a discharging hole for discharging soil to the outer side of the crawler frame is formed in the supporting chain wheel bracket; the supporting part of the supporting chain wheel bracket is of a saddle-shaped structure; the supporting chain wheel is clamped in the saddle-shaped structure and is connected with the crawler belt body; the track body is rotationally connected with the exterior of the track frame. According to the scheme, the structural strength of the supporting chain wheel support is enhanced, soil can be leaked through the supporting chain wheel support, and the working convenience is improved while the excavator crawler belt assembly structure is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to an excavator crawler assembly structure and an excavator. Background Art

[0002] With the development of society, a large number of engineering projects require the use of various excavators to carry out ground excavation work or demolition work of large buildings. The movement of such excavators usually depends on crawler mechanisms. On the one hand, the crawler mechanisms can disperse the large weight of the excavator itself through the crawlers laid flat on the ground to avoid the excavator getting stuck in the loose soil. On the other hand, the crawler mechanism is also convenient for moving on engineering sites with relatively poor ground conditions without being affected by large impurities such as stones on the ground.

[0003] The crawler assembly structure in the excavator generally has at least two carrier wheels, each of which is fixed to a corresponding carrier wheel bracket. Figure 1 As shown, Figure 1 The figure shows a conventional carrier roller bracket. The carrier roller bracket structure comprises a vertical bracket 100 and a flat plate structure 200. The bracket 100 is welded to the flat plate structure 200, which is then assembled onto a supporting crawler frame chassis 300. The carrier roller 400 is bolted to the bracket 100. However, due to the fact that some excavator models require the crawler assembly to operate on harsh terrain for a long period of time, the increased forces on the carrier roller 400 during operation also increase the forces on the bracket 100. Due to the limited forces acting on the carrier roller 400 and bracket 100, these forces can easily be damaged, which in turn harms the crawler assembly structure. Furthermore, the conventional crawler assembly structure is not easy to remove soil during excavation. Therefore, a technical solution is needed that can protect the crawler assembly structure and facilitate soil removal. Utility Model Content

[0004] The embodiment of the utility model provides an excavator crawler assembly structure and an excavator, so as to solve the problems in the prior art that the crawler assembly structure is not strong enough and cannot discharge soil in time.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] To achieve the above-mentioned purpose, the present invention provides an excavator crawler assembly structure, comprising:

[0007] A crawler frame, the crawler frame comprising a first chassis and a second chassis, the first chassis being parallel to a horizontal plane of the ground, the second chassis being composed of a first inclined surface and a second inclined surface, the inclination angle between the first inclined surface and the horizontal plane of the ground being greater than the inclination angle between the second inclined surface and the horizontal plane of the ground;

[0008] A carrier wheel bracket, the carrier wheel bracket being fixedly mounted on the second chassis and having a discharge hole formed thereon for discharging soil to the outside of the crawler frame; a supporting portion of the carrier wheel bracket being a saddle-shaped structure;

[0009] The supporting sprocket is clamped in the saddle-shaped structure and connected to the crawler body; the crawler body is rotatably connected to the outside of the crawler frame.

[0010] Optionally, the carrier wheel bracket includes:

[0011] a first connecting plate and a second connecting plate, wherein each of the first connecting plate and the second connecting plate is provided with at least one bolt hole;

[0012] A first support plate and a second support plate, wherein two ends of the first connecting plate are fixedly connected to the first support plate and the second support plate respectively, and two ends of the second connecting plate are fixedly connected to the first support plate and the second support plate respectively;

[0013] The bottom edges of the first connecting plate, the first supporting plate and the second supporting plate are respectively fixedly connected to the second chassis.

[0014] Optionally, the carrier sprocket bracket further includes:

[0015] A reinforcing connecting plate is provided above the discharge hole and is fixedly connected to the second connecting plate, the first supporting plate and the second supporting plate respectively.

[0016] Optionally, two bolt holes are respectively provided on the first connecting plate and the second connecting plate;

[0017] Wherein, the supporting sprocket is limited on the supporting sprocket bracket by connecting the bolts with the bolt holes.

[0018] Optionally, the first support plate and the second support plate have the same structure, and the first support plate and the second support plate are respectively the saddle-shaped structures; the saddle-shaped structure is used to refer to a structure with high ends and a low middle.

[0019] Optionally, the first connecting plate and the second connecting plate have the same structure, and the height of the first connecting plate and the height of the second connecting plate are in the same horizontal plane.

[0020] Optionally, the cross-sectional shape of the discharge hole is a trapezoid; two bottom angles of the trapezoid are at preset angles; and the range of the preset angles is between 30 degrees and 90 degrees.

[0021] Optionally, in a direction from the inside to the outside of the crawler frame, the width of the first support plate and the width of the second support plate are gradually widened.

[0022] To achieve the above-mentioned objectives, an embodiment of the present invention further provides an excavator, comprising the excavator crawler assembly structure as described above.

[0023] The beneficial effects of the utility model are:

[0024] The utility model provides an excavator crawler assembly structure and an excavator, wherein the excavator crawler assembly structure comprises: a crawler frame, the crawler frame comprising a first chassis and a second chassis, the first chassis being parallel to the ground level, the second chassis being composed of a first inclined surface and a second inclined surface, the inclination angle between the first inclined surface and the ground level being greater than the inclination angle between the second inclined surface and the ground level, and since the discharge hole is provided on the second chassis, the discharge channel connected to the discharge hole is also inclined downward, which is convenient for soil discharge; the supporting portion of the sprocket bracket is a saddle-shaped structure, which strengthens the structural strength of the sprocket bracket; the sprocket is clamped in the saddle-shaped structure and connected to the crawler body; the crawler body is rotatably connected to the outside of the crawler frame. The solution of the present application strengthens the structural strength of the sprocket bracket, and can also be used to discharge soil, thereby protecting the excavator crawler assembly structure while improving the convenience of work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram showing the structure of a carrier wheel bracket provided by the prior art;

[0026] Figure 2 A schematic structural diagram showing the crawler track assembly structure of an excavator provided by the present invention;

[0027] Figure 3 Indicates that the utility model Figure 2 A partial enlarged schematic diagram after the crawler body is removed;

[0028] Figure 4 The figure shows the structure of the support sprocket bracket provided by the present invention.

[0029] Description of reference numerals:

[0030] Track frame 1; first chassis 11; second chassis 12; first inclined surface 121; second inclined surface 122; carrier roller bracket 2; discharge hole 21; first connecting plate 22; second connecting plate 23; bolt hole 24; first support plate 25; second support plate 26; reinforcement connecting plate 27; carrier roller 3; crawler body 4; bolt 5. DETAILED DESCRIPTION

[0031] To make the technical problems, technical solutions, and advantages to be solved by the present invention more apparent, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided solely to facilitate a comprehensive understanding of the embodiments of the present invention. Therefore, it should be clear to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. In addition, descriptions of known functions and structures have been omitted for clarity and brevity.

[0032] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] The utility model aims to solve the problems in the prior art that the crawler assembly structure is not strong enough and cannot discharge soil in time, and provides an excavator crawler assembly structure and an excavator.

[0034] Reference Figure 2 and Figure 3 As shown, the embodiment of the present utility model provides an excavator crawler assembly structure, including:

[0035] A crawler frame 1, comprising a first chassis 11 and a second chassis 12, wherein the first chassis 11 is parallel to a horizontal ground plane, and the second chassis 12 is composed of a first inclined surface 121 and a second inclined surface 122, wherein an inclination angle between the first inclined surface 121 and the horizontal ground plane is greater than an inclination angle between the second inclined surface 122 and the horizontal ground plane;

[0036] A carrier wheel bracket 2, the carrier wheel bracket 2 being fixedly mounted on the second chassis 12 and having a discharge hole 21 formed thereon for discharging soil to the outside of the crawler frame 1; the supporting portion of the carrier wheel bracket 2 being a saddle-shaped structure;

[0037] The carrier sprocket 3 is clamped in the saddle-shaped structure and connected to the crawler body 4; the crawler body 4 is rotatably connected to the outside of the crawler frame 1.

[0038] In the embodiment of the present application, a crawler frame 1 is fixedly installed on both the front and rear sides of the excavator track assembly structure, the outside of the crawler frame 1 is rotatably connected to the crawler body 4, the bottom of the crawler frame 1 and the inside of the crawler body 4 are rotatably connected to supporting rollers (not shown in the figure), the supporting rollers are used to support the crawler body 4, the top of the track frame 1 and the inside of the crawler body 4 are rotatably connected to a supporting sprocket 3, the supporting sprocket 3 is used to guide the crawler body 4, the supporting sprocket 3 is clamped in the supporting sprocket bracket 2, the supporting part of the supporting sprocket bracket 2 is a saddle-shaped structure, which enhances the supporting strength of the supporting sprocket bracket 2, and a discharge hole 21 for discharging soil to the outside of the track frame 1 is formed on the bottom of the supporting sprocket bracket 2.

[0039] It should be noted that in the related art, the sprocket bracket 2 is set on the first chassis 11, resulting in insufficient strength of the sprocket bracket 2 and the inability to discharge mud in time. The present application redesigns the structure of the sprocket bracket 2 and sets the sprocket bracket 2 on the second chassis 12 composed of a first inclined surface 121 and a second inclined surface 122. The inclination angle of the first inclined surface 121 is greater than the inclination angle of the second inclined surface 122. If there is a raised reinforcing rib at the connection between the first inclined surface 121 and the second inclined surface 122, a corresponding groove can be set at the connection position between the sprocket bracket 2 and the connection. The discharge hole 21 of the present application is located on the second inclined surface 122. Since the second inclined surface 122 has a certain inclination angle, it helps to discharge mud during operation, thereby achieving the purpose of cleaning mud on the crawler body.

[0040] Reference Figures 2 to 4 As shown, the support sprocket bracket 2 includes:

[0041] A first connecting plate 22 and a second connecting plate 23 , each of the first connecting plate 22 and the second connecting plate 23 being provided with at least one bolt hole 24 ;

[0042] A first support plate 25 and a second support plate 26, wherein both ends of the first connecting plate 22 are fixedly connected to the first support plate 25 and the second support plate 26, respectively, and both ends of the second connecting plate 23 are fixedly connected to the first support plate 25 and the second support plate 26, respectively;

[0043] The bottom edges of the first connecting plate 22 , the first supporting plate 25 , and the second supporting plate 26 are fixedly connected to the second chassis 12 , respectively.

[0044] In the embodiment of the present application, the first connecting plate 22 is connected to the first support plate 25 and the second support plate 26 respectively, and the second connecting plate 23 is connected to the first support plate 25 and the second support plate 26 respectively. That is, the first connecting plate 22 and the second connecting plate 23 are both located between the first support plate 25 and the second support plate 26, playing the role of fixedly connecting the two support plates. At least one bolt hole 24 is provided on each connecting plate, and the bolt hole 24 can be used for subsequent connection with bolts to achieve the positioning of the carrier sprocket 3 within the carrier sprocket bracket 2. In the present application, the bottom edge of the first support plate 25 and the bottom edge of the second support plate 26 are respectively fixedly connected to the second chassis 12, and the bottom edge of the first connecting plate 22 is fixedly connected to the second chassis 12, which has the effect of strengthening the fixing between the carrier sprocket bracket 2 and the second chassis 12, thereby improving the stability of the carrier sprocket bracket 2.

[0045] Optionally, the bottom edge of the first connecting plate 22 , the bottom edge of the first supporting plate 25 , and the bottom edge of the second supporting plate 26 are respectively fixedly connected to the second chassis 12 by welding.

[0046] Optionally, the support sprocket bracket 2 further includes:

[0047] The reinforcing connecting plate 27 is disposed above the discharge hole 21 and is fixedly connected to the second connecting plate 23 , the first supporting plate 25 , and the second supporting plate 26 .

[0048] In the embodiment of the present application, the reinforcing connecting plate 27 is disposed above the discharge hole 21 and is fixedly connected to the second connecting plate 23, the first support plate 25, and the second support plate 26, respectively. That is, the reinforcing connecting plate 27 is simultaneously connected to the sides of the three structures, fixing the connection point between the second connecting plate 23 and the first support plate 25, and also fixing the connection point between the second connecting plate 23 and the second support plate 26. Here, the shape of the reinforcing connecting plate 27 is adapted to the cross-sectional shape enclosed by the second connecting plate 23, the first support plate 25, and the second support plate 26. In the present application, the reinforcing connecting plate 27 is welded to the edges of the first support plate 25 and the second support plate 26 to enhance stability.

[0049] Optionally, the cross-sectional area of ​​the reinforcing connecting plate 27 is smaller than half the cross-sectional area of ​​the discharge hole 21 .

[0050] Reference Figure 3 and Figure 4 As shown, two bolt holes 24 are respectively provided on the first connecting plate 22 and the second connecting plate 23;

[0051] The supporting sprocket 3 is positioned on the supporting sprocket bracket 2 by connecting the bolt 5 with the bolt hole 24 .

[0052] In the embodiment of the present application, two of the bolt holes 24 are respectively provided on the first connecting plate 22 and the second connecting plate 23, and the supporting sprocket 3 is placed on the supporting sprocket bracket 2, and four bolts 5 are used to perform one-to-one fastening connection with each bolt hole 24. The four bolts 5 can limit the supporting sprocket 3, thereby improving the stability of the supporting sprocket 3 on the supporting sprocket bracket 2.

[0053] Optionally, the first support plate 25 and the second support plate 26 have the same structure, and the first support plate 25 and the second support plate 26 are saddle-shaped structures respectively; the saddle-shaped structure is used to represent a structure with high ends and a low middle.

[0054] It should be noted that the saddle shape is a shape with high ends and low in the middle. The first support plate 25 and the second support plate 26 have the same structure, both of which are saddle-shaped structures. Figure 4 As shown, the first support plate 25 and the second support plate 26 are raised at both ends and recessed along the side plate toward the second chassis 12 to form a saddle shape. The saddle shape of the first support plate 25 and the second support plate 26 can effectively cooperate with the support sprocket 3 to engage.

[0055] Optionally, the protrusions at both ends of the first support plate 25 and the second support plate 26 have the same height.

[0056] Reference Figure 4 As shown, optionally, the first connecting plate 22 and the second connecting plate 23 have the same structure, and the height of the first connecting plate 22 and the height of the second connecting plate 23 are at the same horizontal plane. This arrangement can facilitate limiting the position of the carrier wheel 3 on the carrier wheel bracket 2.

[0057] Reference Figure 2 and Figure 4 As shown, optionally, the cross-sectional shape of the discharge hole 21 is a trapezoid; the two bottom angles of the trapezoid are at a preset angle; and the range of the preset angle is between 30 degrees and 90 degrees.

[0058] In the embodiment of this application, Figure 4 The dotted line in the figure can be understood as the position of the second inclined surface 122 of the second chassis 12. The cross-sectional shape of the discharge hole 21 is roughly trapezoidal. The preset angles α of the two bottom angles are the angles between the first support plate 25 and the second inclined surface 122, and the angles between the second support plate 26 and the second inclined surface 122. The two preset angles α are the same, and the range of the preset angle α is between 30 degrees and 90 degrees. It can be understood that the first support plate 25 and the second support plate 26 are respectively welded to the second chassis 12. The first support plate 25 and the second support plate 26 can be welded vertically, or the first support plate 25 and the second chassis 12 can be welded at a preset angle α.

[0059] Reference Figure 2 and Figure 4 As shown, optionally, in the direction from the inside to the outside of the crawler frame 1, the width of the first support plate 25 and the width of the second support plate 26 are gradually widened.

[0060] In the present application, since the second chassis 12 is composed of two inclined surfaces, the first support plate 25 is welded on the first inclined surface 121, and the second support plate 26 is welded on the second inclined surface 122, and the inclination angle of the first inclined surface 121 is greater than the inclination angle of the second inclined surface 122, in order to ensure that the sprocket 3 can be placed horizontally, the width of the first support plate 25 and the width of the second support plate 26 are gradually widened in the direction from the inside to the outside of the track frame 1, and it is necessary to ensure that the sprocket 3 on the first support plate 25 and the second support plate 26 can be placed horizontally.

[0061] In the embodiment of the present application, the above-mentioned excavator crawler assembly structure is provided with discharge holes for discharging soil while ensuring the overall strength, which facilitates the discharge of soil during operation and improves the safety and convenience of operation.

[0062] The present application also provides an excavator, including: Figures 2 to 4 The crawler assembly structure of the excavator described in.

[0063] In the embodiment of the present application, the excavator includes the excavator crawler assembly structure as described above. The excavator can achieve the effects that can be achieved in each embodiment of the excavator crawler assembly structure. To avoid repetition, they will not be described here.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] Furthermore, 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 quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or mutual communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0067] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0068] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications are also within the scope of protection of the present invention.

Claims

1. An excavator crawler assembly structure, characterized in that: include: A crawler frame (1), the crawler frame (1) comprising a first chassis (11) and a second chassis (12), the first chassis (11) being parallel to a ground horizontal plane, the second chassis (12) being composed of a first inclined surface (121) and a second inclined surface (122), the inclination angle between the first inclined surface (121) and the ground horizontal plane being greater than the inclination angle between the second inclined surface (122) and the ground horizontal plane; A sprocket support (2), the sprocket support (2) being fixedly mounted on the second chassis (12), and having a discharge hole (21) formed on the sprocket support (2) for discharging soil toward the outside of the crawler frame (1); a supporting portion of the sprocket support (2) being a saddle-shaped structure; A supporting sprocket (3) is clamped in the saddle-shaped structure and connected to a crawler body (4); the crawler body (4) is rotatably connected to the outside of the crawler frame (1).

2. The crawler track assembly structure of an excavator according to claim 1, characterized in that: The sprocket support (2) comprises: A first connecting plate (22) and a second connecting plate (23), wherein at least one bolt hole (24) is provided on each of the first connecting plate (22) and the second connecting plate (23); a first support plate (25) and a second support plate (26), wherein two ends of the first connecting plate (22) are fixedly connected to the first support plate (25) and the second support plate (26), respectively, and two ends of the second connecting plate (23) are fixedly connected to the first support plate (25) and the second support plate (26), respectively; The bottom edges of the first connecting plate (22), the first supporting plate (25) and the second supporting plate (26) are respectively fixedly connected to the second chassis (12).

3. The crawler track assembly structure of an excavator according to claim 2, characterized in that: The sprocket support (2) further comprises: A reinforcing connecting plate (27) is provided above the discharge hole (21), and the reinforcing connecting plate (27) is fixedly connected to the second connecting plate (23), the first supporting plate (25), and the second supporting plate (26), respectively.

4. The crawler track assembly structure of an excavator according to claim 2, characterized in that: Two bolt holes (24) are respectively provided on the first connecting plate (22) and the second connecting plate (23); The supporting sprocket (3) is positioned on the supporting sprocket bracket (2) by connecting the bolt (5) with the bolt hole (24).

5. The crawler track assembly structure of an excavator according to claim 2, characterized in that: The first support plate (25) and the second support plate (26) have the same structure, and the first support plate (25) and the second support plate (26) are respectively the saddle-shaped structures; the saddle-shaped structure is used to represent a structure with two high ends and a low middle.

6. The crawler track assembly structure of an excavator according to claim 2, characterized in that: The first connecting plate (22) and the second connecting plate (23) have the same structure, and the height of the first connecting plate (22) and the height of the second connecting plate (23) are on the same horizontal plane.

7. The crawler track assembly structure of an excavator according to claim 1, characterized in that: The cross-sectional shape of the discharge hole (21) is a trapezoid; the two bottom angles of the trapezoid are at a preset angle; and the range of the preset angle is between 30 degrees and 90 degrees.

8. The crawler track assembly structure of an excavator according to claim 2, characterized in that: In a direction from the inside to the outside of the crawler frame (1), the width of the first support plate (25) and the width of the second support plate (26) gradually increase.

9. An excavator, characterized in that: The invention comprises the crawler track assembly structure of an excavator according to any one of claims 1 to 8.

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