Articulated rear frame and engineering machinery

Abstract

The utility model relates to an engineering machinery frame, in particular to an articulated rear frame and engineering machinery, the articulated rear frame comprises two frame webs, an upper steering articulated support, a left pair of steering oil cylinder supports and a right pair of steering oil cylinder supports, the left end and the right end of the upper steering articulated support are correspondingly welded with the frame webs, and the left pair of steering oil cylinder supports and the right pair of steering oil cylinder supports are correspondingly welded on the left frame web and the right frame web. The upper steering hinge support comprises an upper hinge plate and a lower hinge plate, and the bottom surface of the upper hinge plate is welded with the top of a frame web; the steering oil cylinder support is arranged behind the upper steering hinged support and comprises an upper support plate and a lower support plate; and the bottom surface of the upper support plate is welded with the top of the frame web. The front portions of the left end and the right end of the upper hinge plate and the left upper support plate and the right upper support plate are respectively provided with at least one cab installation hole. According to the utility model, the arrangement of the overhead steering oil cylinder is adopted, and the cab mounting holes are formed in the upper hinge seat and the steering oil cylinder support of the rear frame, so that a mounting seat specially used for mounting a cab does not need to be arranged, and the structure of the frame is simplified.

Description

Technical Field

[0001] The utility model relates to an engineering machinery frame, more specifically, to an articulated rear frame and an engineering machinery. Background Art

[0002] Engineering machinery such as loaders and graders usually adopt an articulated frame, which includes a front frame and a rear frame. The articulated frame drives the front and rear frames to swing relative to each other through a steering cylinder to realize the steering of the engineering machinery.

[0003] In existing engineering machinery, the steering support is arranged in the middle of the hinged position connecting the front frame and the rear frame, that is, the middle of the chassis. Usually, the hydraulic steering pipeline and the working device pipeline will pass through the hinged part. Hydraulic pipeline leakage, breakage and other problems are common faults. During maintenance, the steering cylinder affects the maintenance personnel's work in a small space.

[0004] The cab is mounted on the rear frame, so a cab mounting support needs to be provided on the rear frame. The cab mounting support itself is welded from plates, and the welded cab mounting supports are independently fixed on the belly plate by welding. Therefore, the setting of the cab mounting support on the existing rear frame increases a lot of welding workload. Utility Model Content

[0005] The technical problem to be solved by the utility model is the problem of the arrangement of the cab mounting support on the existing articulated frame, and provides an articulated rear frame and an engineering machine.

[0006] The utility model provides a technical solution for achieving the purpose: an articulated rear frame, comprising two frame webs spaced apart on the left and right sides, upper steering articulated supports welded to the left and right frame webs at the left and right ends, and left and right steering cylinder supports welded to the left and right frame webs.

[0007] The upper steering articulated support is arranged at the front part of the frame web, and comprises an upper articulated plate and a lower articulated plate, wherein the bottom surface of the upper articulated plate is welded to the top of the frame web;

[0008] The steering cylinder support is arranged behind the upper steering hinge support, and comprises an upper support plate and a lower support plate; the bottom surface of the upper support plate is welded to the top of the frame web.

[0009] At least one cab mounting hole is respectively provided at the left and right ends of the upper hinge plate and at the positions of the left and right upper support plates protruding to the outer sides of the corresponding frame webs.

[0010] In the articulated rear frame of the utility model, the front parts of the left and right ends of the upper articulated plate are both provided with front ears protruding forward, and the cab mounting holes of the upper articulated plate are arranged on the front ears.

[0011] In the articulated rear frame of the utility model, a cab front support reinforcing rib is welded between the lower side surface of each front ear portion and the outer side surface of the corresponding frame web.

[0012] In the articulated rear frame of the utility model, each of the upper support plates is provided with a side ear portion protruding outward, and the cab mounting hole on the upper support plate is arranged on the side ear portion.

[0013] In the articulated rear frame of the utility model, a cab rear support reinforcing rib is welded between the lower side surface of each side ear portion and the outer side surface of the corresponding frame web.

[0014] In the articulated rear frame of the utility model, the upper articulated plate is flush with the upper supporting seat plate.

[0015] In the articulated rear frame of the utility model, the left and right ends of the lower articulated plate and the left and right lower support plates are welded to the inner side surfaces of the corresponding frame webs, and the lower support plates are flush with the lower articulated plate.

[0016] In the articulated rear frame of the utility model, the upper support plate and the upper hinge plate are an integrated structure, and / or the lower support plate and the lower hinge plate are an integrated structure.

[0017] In the articulated rear frame of the utility model, the rear part of each pair of steering cylinder supports is provided with a vertical plate and a horizontal plate vertically welded to the inner side surface of the corresponding frame web; the upper end of the vertical plate is vertically welded to the bottom surface of the upper support plate; the rear end of the lower support plate is vertically welded to the front side surface of the vertical plate; the horizontal plate is arranged in the same plane or in parallel with the lower support plate and the front end of the horizontal plate is vertically welded to the rear side surface of the vertical plate.

[0018] The technical solution for achieving the purpose of the utility model is: an engineering machine having the aforementioned articulated rear frame. The engineering machine is an articulated engineering machine, which may be a loader, a grader, and the like.

[0019] Compared with the prior art, in the utility model, the steering cylinder is arranged in a high-mounted manner, and a cab mounting hole is provided on the upper hinge seat of the rear frame and the steering cylinder support, so there is no need to provide a mounting seat specifically for installing the cab, and the frame structure is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the articulated rear frame of the utility model. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the articulated rear frame of the utility model. Figure 2 .

[0022] Figure 3 It is a schematic diagram of the frame structure of the engineering machinery of the utility model.

[0023] Parts names and serial numbers in the figure:

[0024] Frame web 10 and lower steering hinge support 20.

[0025] An upper steering hinge support 30 , a lower hinge plate 31 , an upper hinge plate 32 , a front ear 33 , a cab front mounting hole 34 , and a cab front support reinforcement rib 35 .

[0026] Steering cylinder support 40, upper support plate 41, lower support plate 42, side ears 43, cab rear mounting hole 44, cab rear support reinforcement rib 45, lower bracket 46, upper bracket 47, vertical plate 48, horizontal plate 49.

[0027] Front frame 100 , front frame upper steering articulated support 101 , front frame lower steering articulated support 102 , rear frame 200 , steering cylinder 300 . DETAILED DESCRIPTION

[0028] The specific implementation scheme is described below with reference to the accompanying drawings.

[0029] like Figure 1 Figure 2 As shown, the articulated rear frame includes two frame webs 10 spaced apart from each other, upper steering articulated supports 30 welded to the frame webs 10 on the left and right ends, and left and right steering cylinder supports 40 welded to the frame webs 10 on the left and right ends.

[0030] The upper steering hinge support 30 is arranged at the front part of the frame web 10 , and comprises an upper hinge plate 32 and a lower hinge plate 31 . The bottom surface of the upper hinge plate 32 is welded to the top of the frame web 10 .

[0031] The steering cylinder support 40 is arranged behind the upper steering hinge support 30 , and includes an upper support plate 41 and a lower support plate 42 ; the bottom surface of the upper support plate 41 is welded to the top of the frame web 10 .

[0032] At least one cab mounting hole is provided at each of the left and right ends of the upper hinge plate 32 and the portions on the left and right upper support plates 41 that protrude to the corresponding outer side 10 of the frame web. The cab of an engineering machinery usually has four mounting points, and is installed at each mounting point through a shock absorber. When there are four mounting points at the bottom of the cab, a cab mounting hole is provided at the front of the left and right ends of the upper hinge plate 32, and a cab mounting hole is provided on each of the left and right upper support plates 41. If the cab is installed through six mounting points, two cab mounting holes spaced apart from each other can be provided on each upper support plate 41.

[0033] like Figure 1 As shown, a lower steering articulated support 20 is provided at the front portion of the rear frame 200. The lower steering articulated support 20 is located below the upper steering articulated support 30, and its left and right ends are correspondingly welded to the frame webs 10 on the left and right sides. A plurality of cross beams are also provided at the middle and rear portions of the frame webs 10 on the left and right sides, and the left and right ends of each cross beam are respectively welded to the frame webs 10 on the left and right sides.

[0034] The front parts of the left and right ends of the upper hinge plate 32 are both provided with front ears 33 protruding forward, and the cab mounting holes of the upper hinge plate 32 are provided on the front ears 33. The two front ears 33 on the upper hinge plate 32 constitute two cab mounting front supports for mounting the cab, and the cab mounting holes on the front ears 33 are cab front mounting holes 34, in which shock absorbers can be connected and installed, and connected to the cab through the shock absorbers.

[0035] Furthermore, a cab front support reinforcement rib 35 is welded between the lower side of each front ear portion 33 and the outer side of the corresponding frame web 10. The cab front support reinforcement rib 35 strengthens the connection strength between the front ear portion 33 and the frame web 10. The outer side of the frame web 10 refers to the left side of the left frame web and the right side of the right frame web.

[0036] Each upper support plate 41 has a side ear portion 43 protruding outward, and the cab mounting hole on the upper support plate 41 is arranged on the side ear portion 43. The side ear portion 43 constitutes two cab mounting rear supports for mounting the cab, and the cab mounting hole on the side ear portion 43 is a cab rear mounting hole 44, in which a shock absorber can be connected and mounted, and connected to the cab through the shock absorber.

[0037] Furthermore, a cab rear support reinforcement rib 45 is welded between the lower side of each side ear portion 43 and the outer side of the corresponding frame web 10. The cab rear support reinforcement rib 45 strengthens the connection strength between the side ear portion 43 and the frame web 10.

[0038] exist Figure 1 Figure 2In the illustrated articulated rear frame, the upper articulated plate 32 and the upper support plate 41 are two independent plates, each of which is welded to the top of the frame web 10, and the upper articulated plate 32 and the upper support plate 41 are arranged flush in height. In other embodiments, the upper articulated plate 32 and the upper support plate 41 can also be an integral structure, that is, the upper articulated plate 32 and the upper support plate 41 are the front and rear parts of a whole plate.

[0039] The left and right ends of the lower hinge plate 31 are welded to the inner side of the corresponding frame web 10. Each pair of steering cylinder supports 40 includes an upper support plate 41 and a lower support plate 42 which are parallel to each other. The lower support plate 42 is welded to the inner side of the frame web 10, that is, the lower support plate 42 in the left steering cylinder support 40 is welded to the right side surface of the left frame web 10, and the lower support plate 42 in the right steering cylinder support 40 is welded to the left side surface of the right frame web 10.

[0040] exist Figure 1 Figure 2 In the illustrated articulated rear frame, the lower hinge plate 31 and the lower support plate 42 are two independent plates, each of which is welded to the inner side of the frame web 10, and the lower support plate 42 is arranged flush with the lower hinge plate 31. In other embodiments, the lower hinge plate 31 and the lower support plate 42 may also be an integral structure, that is, the lower hinge plate 31 and the lower support plate 42 are the front and rear parts of a whole plate.

[0041] The upper support plate 41 and the lower support plate 42 are arranged in parallel, and an upper sling 47 and a lower sling 46 are arranged on opposite surfaces, respectively, and the upper sling 47 and the lower sling 46 respectively strengthen the strength of the upper support plate 41 and the lower support plate 42 at this position, so as to facilitate connection with the steering cylinder 300 through the pin shaft. At the same time, the upper sling 47 and the lower sling 46 are also used to adjust the effective gap between the upper support plate 41 and the lower support plate 42 at this position, so that the gap is adapted to the end thickness of the steering cylinder.

[0042] Optionally, a vertical plate 48 and a horizontal plate 49 are vertically welded to the inner side of the corresponding frame web 10 at the rear of each steering cylinder support 40. The upper end of the vertical plate 48 is vertically welded to the bottom surface of the upper support plate 41; the rear end of the lower support plate 42 is vertically welded to the front side of the vertical plate 48; the horizontal plate 49 is arranged coplanarly or parallel to the lower support plate 42. The front end of the horizontal plate 49 is vertically welded to the rear side of the vertical plate 48.

[0043] This embodiment provides an engineering machine, which may be a loader, and its articulated frame is as follows: Figure 3As shown, in the articulated frame, the rear frame 200 is the aforementioned articulated rear frame. The front frame 100 is adapted to the rear frame 200, and the front frame 100 has a front frame upper steering articulated support 101, which is connected to the upper steering articulated support 30 on the rear frame 200 through an articulated pin. The front frame 100 also has a front frame lower steering articulated support 102, which is connected to the lower steering articulated support 20 on the rear frame 200 through an articulated pin. Two steering cylinders 300 are arranged between the front and rear frames, and the front ends of the two steering cylinders 300 are articulated to the upper steering articulated support 101 of the front frame, and the rear ends of the two steering cylinders 300 are correspondingly articulated to the left and right steering cylinder supports 40.

[0044] The construction machinery having the aforementioned articulated rear frame may also be a grader.

[0045] In the utility model, the steering cylinder 300 is arranged in a high position, and a cab mounting hole is set on the upper steering articulated seat 30 of the rear frame 200 and the steering cylinder support 40. The cab (not shown in the figure) can be directly installed on the upper hinge plate 32 of the upper steering articulated seat 30 and the upper support plate 41 of the steering cylinder support 40 through the shock absorber and the cab mounting hole, thereby eliminating the need to set a mounting seat specifically for installing the cab on the rear frame 200, thereby simplifying the rear frame structure.

Claims

1. An articulated rear frame, characterized in that: It includes two frame webs spaced apart on the left and right sides, upper steering hinge supports welded to the left and right frame webs at the left and right ends, and left and right steering cylinder supports welded to the left and right frame webs; The upper steering articulated support is arranged at the front part of the frame web, and comprises an upper articulated plate and a lower articulated plate, wherein the bottom surface of the upper articulated plate is welded to the top of the frame web; The steering cylinder support is arranged behind the upper steering hinge support, and comprises an upper support plate and a lower support plate; the bottom surface of the upper support plate is welded to the top of the frame web; At least one cab mounting hole is respectively provided on the left and right ends of the upper hinge plate and the portions of the left and right upper support plates protruding to the outer sides of the corresponding frame webs.

2. The articulated rear frame according to claim 1, characterized in that: Front ears protruding forward are arranged at the front parts of the left and right ends of the upper hinged plate, and the cab mounting holes of the upper hinged plate are arranged on the front ears.

3. The articulated rear frame according to claim 2, characterized in that: A cab front support reinforcement rib is welded between the lower side surface of each front ear portion and the outer side surface of the corresponding frame web.

4. The articulated rear frame according to claim 1, characterized in that: Each of the upper support plates has a side ear portion protruding outward, and the cab mounting hole on the upper support plate is arranged on the side ear portion.

5. The articulated rear frame according to claim 4, characterized in that: A cab rear support reinforcement rib is welded between the lower side surface of each side ear portion and the outer side surface of the corresponding frame web.

6. The articulated rear frame according to claim 1, characterized in that: The upper hinge plate is flush with the upper support plate.

7. The articulated rear frame according to claim 6, characterized in that: The left and right ends of the lower hinge plate and the two left and right lower support plates are welded to the inner side surfaces of the corresponding frame webs, and the lower support plates are flush with the lower hinge plate.

8. The articulated rear frame according to claim 7, characterized in that: The upper support plate and the upper hinge plate are an integral structure and / or the lower support plate and the lower hinge plate are an integral structure.

9. The articulated rear frame according to claim 1, characterized in that: The rear part of each pair of steering cylinder supports is provided with a vertical plate and a horizontal plate vertically welded to the inner side of the corresponding frame web; the upper end of the vertical plate is vertically welded to the bottom surface of the upper support plate; the rear end of the lower support plate is vertically welded to the front side of the vertical plate; the horizontal plate is arranged in the same plane or in parallel with the lower support plate and the front end of the horizontal plate is vertically welded to the rear side of the vertical plate.

10. An engineering machine, characterized in that: An articulated rear frame according to any one of claims 1 to 9.

Images