Crawling ladder mounting frame and ultra-large excavator

Abstract

The utility model relates to the field of engineering machinery, and discloses a crawling ladder mounting frame and an ultra-large excavator. The ladder stand installation frame comprises a left side vertical plate, a right side vertical plate, a left side vertical plate and a right side vertical plate, the rear edge of the right vertical plate is connected with the side wall of the turntable and is parallel to the left vertical plate at an interval; the back surface of the front side vertical plate is connected with the front edges of the left side vertical plate and the right side vertical plate; the back of the top plate is connected with the upper edges of the left vertical plate, the right vertical plate and the front vertical plate, and the rear edge of the top plate is connected with the side wall of the turntable; the back surface of the bottom plate is connected with the lower edges of the left-side vertical plate, the right-side vertical plate and the front-side vertical plate, and the rear edge of the bottom plate is connected with the side wall of the turntable. The left side vertical plate, the right side vertical plate, the front side vertical plate, the top plate and the bottom plate are connected with one another to form an integral box type frame structure, the structural strength of the crawling ladder mounting frame and the connecting strength of the crawling ladder mounting frame and a rotary table are improved, and then the problem that the overall strength of the crawling ladder mounting frame of an ultra-large excavator is insufficient is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery, and specifically relates to a ladder installation frame and an ultra-large excavator. Background Art

[0002] Super-large crawler hydraulic excavators are usually equipped with automatic ladders to facilitate operators to board the excavator for driving. The automatic ladder is generally installed on the turntable of the excavator in a cantilever manner through a ladder mounting frame. The automatic ladder can be extended to the ground when used by the operator and retracted after use. When the automatic ladder is extended or retracted, the ladder mounting frame will bear the effect of alternating loads. At the same time, the longer the cantilever of the automatic ladder is after extension, the greater the force borne by the ladder mounting frame.

[0003] like Figure 1 As shown, the ladder mounting frame in the prior art generally includes a left bracket, a right bracket and an end connecting plate. The rear edges of the left bracket and the right bracket are welded to the side wall of the turntable. The end connecting plate connects the front edges of the left bracket and the right bracket. The automatic ladder is mounted on the end connecting plate. Under the alternating load applied by the automatic ladder, the ladder mounting frame is easily deformed as a whole, and fatigue cracking is easily caused at the welding point of the rear edges of the left bracket and the right bracket of the ladder mounting frame, which affects the normal use of the automatic ladder. Utility Model Content

[0004] The purpose of this application is to provide a ladder mounting frame and an ultra-large excavator, which are used to solve the problem of insufficient overall strength of the ladder mounting frame of the ultra-large excavator, so as to achieve the effect of no deformation of the frame, no cracking at the joints, and stable support of the ladder.

[0005] In order to achieve the above-mentioned object, the first aspect of the present application provides a ladder installation frame, comprising:

[0006] The left vertical plate has a rear edge connected to the side wall of the turntable;

[0007] The right side vertical plate has a rear edge connected to the side wall of the turntable and is arranged parallel to and spaced from the left side vertical plate;

[0008] A front side vertical plate, the back side of which is connected to the front edges of the left vertical plate and the right vertical plate;

[0009] A top plate, the back side of which is connected to the upper edges of the left side vertical plate, the right side vertical plate and the front side vertical plate, and the rear edge of the top plate is connected to the side wall of the turntable;

[0010] The back side of the bottom plate is connected to the lower edges of the left vertical plate, the right vertical plate and the front vertical plate, and the rear edge of the bottom plate is connected to the side wall of the turntable.

[0011] In some embodiments, the ladder mounting frame further includes a first reinforcing plate disposed transversely, wherein the first reinforcing plate connects the right side vertical plate and the back side of the front side vertical plate.

[0012] In some embodiments, the ladder mounting frame further includes a second reinforcing plate disposed vertically, wherein the second reinforcing plate connects the front side vertical plate, the top plate, and the back side of the bottom plate.

[0013] In some embodiments, the ladder mounting frame further includes a third reinforcing plate disposed vertically, wherein the third reinforcing plate connects a front side of the left vertical plate, a back side of the top plate, and a back side of the bottom plate.

[0014] In some embodiments, the top plate and / or the bottom plate are provided with hollow holes for lightweighting.

[0015] In some embodiments, one or more of the left side vertical plate, the right side vertical plate, and the front side vertical plate are provided with threading holes for laying pipelines.

[0016] In some embodiments, the front side vertical plate is provided with mounting holes arranged in a ring shape for mounting a ladder.

[0017] In some embodiments, the left vertical plate, the right vertical plate, the front vertical plate, the top plate and the bottom plate are all connected by welding.

[0018] In some embodiments, the material yield strength of the ladder mounting frame is not less than 355 MPa.

[0019] A second aspect of the present application provides an ultra-large excavator, which includes a turntable, a ladder and the above-mentioned ladder mounting frame, wherein the ladder is mounted on the ladder mounting frame, and the ladder mounting frame is fixed to the side wall of the turntable.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The ladder mounting frame of the present application is interconnected by a left vertical plate, a right vertical plate, a front vertical plate, a top plate and a bottom plate to form an integral box-type frame structure, thereby improving the structural strength of the ladder mounting frame itself, increasing the contact area between the ladder mounting frame and the side wall of the turntable, and improving the connection strength between the ladder mounting frame and the turntable, thereby solving the problem of insufficient overall strength of the ladder mounting frame of super-large excavators, and achieving the effect of no deformation of the frame, no cracking at the joints, and stable support of the ladder.

[0022] 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

[0023] 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:

[0024] Figure 1 The present invention is a structural diagram of a ladder installation frame in the prior art.

[0025] Figure 2 This is a structural diagram of the ladder installation frame of the specific implementation mode of the present application from a first perspective, in which the top plate is schematically hidden.

[0026] Figure 3 This is a structural diagram of the ladder installation frame of the specific implementation mode of the present application from a second perspective.

[0027] Explanation of the reference numerals: left side vertical plate 11, right side vertical plate 12, front side vertical plate 13, top plate 14, bottom plate 15, first reinforcing plate 16, second reinforcing plate 17, third reinforcing plate 18, hollow hole 21, threading hole 22, mounting hole 23, turntable 3, left bracket 41, right bracket 42, end connecting plate 43. DETAILED DESCRIPTION

[0028] 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.

[0029] It should be noted that, in the present application, unless otherwise stated, the inner side of the ladder mounting frame is the back side of each panel.

[0030] like Figure 2 , Figure 3 As shown, a ladder installation frame includes:

[0031] The left side vertical plate 11, the rear edge of which is connected to the side wall of the turntable 3;

[0032] The right side vertical plate 12 has a rear edge connected to the side wall of the turntable 3 and is arranged parallel to and spaced from the left side vertical plate 11;

[0033] A front side vertical plate 13, the back side of which is connected to the front edges of the left vertical plate 11 and the right vertical plate 12;

[0034] The top plate 14 has a back side connected to the upper edges of the left side vertical plate 11, the right side vertical plate 12 and the front side vertical plate 13, and a rear edge of the top plate 14 is connected to the side wall of the turntable 3;

[0035] The back side of the bottom plate 15 is connected to the lower edges of the left side vertical plate 11 , the right side vertical plate 12 and the front side vertical plate 13 , and the rear edge of the bottom plate 15 is connected to the side wall of the turntable 3 .

[0036] In the present application, the top plate 14 and the bottom plate 15 are designed to be a whole plate structure and span the left side plate 11 and the right side plate 12. The left side plate 11, the right side plate 12, the front side plate 13, the top plate 14 and the bottom plate 15 are interconnected to form an integral box-type frame structure to enhance the structural strength of the ladder installation frame itself and prevent the frame from deforming. At the same time, the rear edges of the left side plate 11, the right side plate 12, the top plate 14 and the bottom plate 15 are all connected to the side wall of the turntable 3, increasing the contact area between the ladder installation frame and the side wall of the turntable 3, so as to enhance the connection strength between the ladder installation frame and the turntable 3 and prevent cracking at the connection. The present application solves the problem of insufficient overall strength of the ladder installation frame of the super-large excavator by interconnecting multiple plates to form an integral box-type frame structure.

[0037] In some embodiments, the top plate 14 and the bottom plate 15 have the same size and the four edges are aligned with each other. The left side vertical plate 11 is a distance away from the left edge of the top plate 14 or the bottom plate 15. The right side vertical plate 12 is approximately aligned with the right edge of the top plate 14 or the bottom plate 15. The front side vertical plate 13 is approximately aligned with the front edge of the top plate 14 or the bottom plate 15.

[0038] Specifically, the ladder installation frame further includes a first reinforcing plate 16 disposed transversely, and the first reinforcing plate 16 connects the back sides of the right side vertical plate 12 and the front side vertical plate 13. The first reinforcing plate 16 can enhance the connection strength between the right side vertical plate 12 and the front side vertical plate 13.

[0039] Specifically, the ladder mounting frame further includes a second reinforcing plate 17 arranged vertically, and the second reinforcing plate 17 connects the backs of the front side vertical plate 13, the top plate 14 and the bottom plate 15. The second reinforcing plate 17 can enhance the connection strength between the front side vertical plate 13 and the top plate 14, and between the front side vertical plate 13 and the bottom plate 15.

[0040] Specifically, the ladder mounting frame further includes a third reinforcing plate 18 disposed vertically, and the third reinforcing plate 18 connects the front of the left vertical plate 11, the back of the top plate 14, and the back of the bottom plate 15. The third reinforcing plate 18 can enhance the connection strength between the left vertical plate 11 and the top plate 14, and between the left vertical plate 11 and the bottom plate 15.

[0041] Specifically, hollow holes 21 for lightening are provided on the top plate 14 and the bottom plate 15. The hollow holes 21 are usually provided in the central area of ​​the top plate 14 and the bottom plate 15 to reduce the weight of the top plate 14 and the bottom plate 15 without affecting the bending resistance of the top plate 14 and the bottom plate 15. The hollow holes 21 can be rounded rectangular holes or oblong holes.

[0042] Specifically, the left side vertical plate 11, the right side vertical plate 12, and the front side vertical plate 13 are all provided with threading holes 22 for laying pipelines. The threading holes 22 can be round holes or oblong holes.

[0043] Specifically, the front side vertical plate 13 is provided with mounting holes 23 arranged in a ring shape for mounting the ladder. The hole diameter and hole spacing of the mounting holes 23 are determined according to the end flanges of the ladder. The mounting holes 23 can be through holes or threaded holes.

[0044] Specifically, the left side vertical plate 11, the right side vertical plate 12, the front side vertical plate 13, the top plate 14, the bottom plate 15, the first reinforcing plate 16, the second reinforcing plate 17 and the third reinforcing plate 18 are all connected by welding. Among them, including but not limited to the upper edge and the lower edge of the front side vertical plate 13, the rear edge of the bottom plate 15 are respectively provided with grooves to obtain better welding strength.

[0045] Specifically, the material yield strength of the ladder mounting frame is not less than 355 MPa to ensure that the ladder mounting frame can bear the alternating load of the ladder and stably support the ladder.

[0046] In some embodiments, the left vertical plate 11, the right vertical plate 12, the front vertical plate 13, the top plate 14, the bottom plate 15, the first reinforcing plate 16, the second reinforcing plate 17 and the third reinforcing plate 18 are all made of steel plates with a grade not lower than Q335D by wire cutting.

[0047] An ultra-large excavator comprises a turntable 3, a ladder and the above-mentioned ladder mounting frame, wherein the ladder is mounted on the ladder mounting frame, and the ladder mounting frame is fixed on the side wall of the turntable 3.

[0048] In some embodiments, the rear edges of the left vertical plate 11, the right vertical plate 12, the top plate 14 and the bottom plate 15 of the ladder mounting frame are welded to the side wall of the turntable 3. The ladder is an automatically retractable ladder. The end of the ladder is bolted to the mounting hole 23 of the front vertical plate 13 of the ladder mounting frame. The control pipeline of the ladder enters the turntable 3 through the threading hole 22 on the front vertical plate 13.

[0049] The ladder and the ladder mounting frame form a cantilever structure on the side wall of the turntable 3. During the extension or retraction of the ladder, the farther the center of mass of the ladder is from the position of the ladder mounting frame, the greater the force borne at the connection between the ladder mounting frame and the turntable 3. Since the rear edges of the left vertical plate 11, the right vertical plate 12, the top plate 14 and the bottom plate 15 are welded to the side wall of the turntable 3, the contact area of ​​the welding is increased, and the welding strength of the connection between the ladder mounting frame and the turntable 3 is improved, thereby avoiding the problem of fatigue cracking at the connection.

[0050] Those skilled in the art will appreciate that the ladder mounting frame of the present application is not limited to the above-mentioned super-large excavators, but can also be used for heavy-duty engineering machinery such as mining trucks whose cabs are higher off the ground, which should all fall within the scope of protection of the present application.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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 this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A ladder installation frame, characterized in that: The ladder installation frame comprises: A left side vertical plate (11), the rear edge of which is connected to the side wall of the turntable (3); A right side vertical plate (12), the rear edge of which is connected to the side wall of the turntable (3) and is arranged parallel to and spaced from the left side vertical plate (11); A front side vertical plate (13), the back side of which is connected to the front edges of the left side vertical plate (11) and the right side vertical plate (12); A top plate (14), the back side of which is connected to the upper edges of the left side vertical plate (11), the right side vertical plate (12) and the front side vertical plate (13), and the rear edge of the top plate (14) is connected to the side wall of the turntable (3); The back side of the bottom plate (15) is connected to the lower edges of the left vertical plate (11), the right vertical plate (12) and the front vertical plate (13); the rear edge of the bottom plate (15) is connected to the side wall of the turntable (3).

2. The ladder installation frame according to claim 1, characterized in that: The ladder installation frame further comprises a first reinforcing plate (16) arranged transversely, wherein the first reinforcing plate (16) connects the back side of the right side vertical plate (12) and the front side vertical plate (13).

3. The ladder installation frame according to claim 1, characterized in that: The ladder installation frame further comprises a second reinforcing plate (17) arranged vertically, wherein the second reinforcing plate (17) connects the back sides of the front side vertical plate (13), the top plate (14) and the bottom plate (15).

4. The ladder mounting frame according to claim 1, characterized in that: The ladder installation frame also includes a third reinforcing plate (18) arranged vertically, wherein the third reinforcing plate (18) connects the front side of the left vertical plate (11), the back side of the top plate (14) and the back side of the bottom plate (15).

5. The ladder installation frame according to claim 1, characterized in that: The top plate (14) and / or the bottom plate (15) are provided with hollow holes (21) for lightening.

6. The ladder mounting frame according to claim 1, characterized in that: One or more of the left side vertical plate (11), the right side vertical plate (12), and the front side vertical plate (13) is provided with a threading hole (22) for laying pipelines.

7. The ladder mounting frame according to claim 1, characterized in that: The front side vertical plate (13) is provided with mounting holes (23) arranged in a ring shape for mounting a ladder.

8. The ladder installation frame according to any one of claims 1 to 7, characterized in that: The left side vertical plate (11), the right side vertical plate (12), the front side vertical plate (13), the top plate (14) and the bottom plate (15) are all connected by welding.

9. The ladder installation frame according to any one of claims 1 to 7, characterized in that: The material yield strength of the ladder mounting frame is not less than 355 MPa.

10. An ultra-large excavator, characterized in that: The ultra-large excavator comprises a turntable (3), a ladder and a ladder mounting frame according to any one of claims 1 to 9, wherein the ladder is mounted on the ladder mounting frame, and the ladder mounting frame is fixed to the side wall of the turntable (3).

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