CN210887389U

CN210887389U - Rear axle box of bulldozer

Info

Publication number: CN210887389U
Application number: CN201921059000.3U
Authority: CN
Inventors: 王志远; 杨胜言; 廖崇庆
Original assignee: Liugong Changzhou Machinery Co Ltd
Current assignee: Liugong Changzhou Machinery Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-06-30
Anticipated expiration: 2029-07-09

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a rear axle box of a bulldozer, which comprises a rear axle box body, wherein the interior of the rear axle box body is of a hollow structure, the rear axle box body comprises a step-shaped bottom plate I and a step-shaped bottom plate II, and the bottom plate II is higher than and longer than the bottom plate I; the rear side of the bottom plate I is a rear side plate provided with a rectangular opening; the left side and the right side of the bottom plate I and the bottom plate II are respectively connected with a side vertical plate I and a side vertical plate II; the side vertical plate I and the side vertical plate II are connected through a connecting plate, and the tops of the side vertical plate I and the side vertical plate II are provided with top plates with special-shaped openings; the rear axle box body front side is for opening the mouth, II lower parts of bottom plate that open mouth department are equipped with T font step. The utility model discloses a rear axle case design is simple, and the manufacturing degree of difficulty reduces, and welding process is simple, and assembly adjustment is convenient, and the cost reduces by a wide margin.

Description

Rear axle box of bulldozer

Technical Field

The utility model relates to an engineering machine tool technical field, in particular to bull-dozer rear axle case.

Background

The hydrostatic main frame rear axle box structure of the bulldozer generally has the functions of installing a trolley pivot and a final drive, wherein the pivot part needs to bear the weight of the whole bulldozer, the final drive part needs to provide the driving force of the whole bulldozer, and the final drive is installed on the rear axle box, so that the requirement on the structural strength of the rear axle box is high. At present, the engineering machinery industry mostly adopts a structure for mounting a final drive on a rear axle box, the structure has higher requirements on the rear axle box, from the production and manufacturing aspects, a final drive mounting hole of the rear axle box is difficult to process, and the planeness of two sides and the coaxiality of two final drive covers are difficult to ensure; the welding process has higher cost, the stress of a final transmission installation cantilever of the rear axle box is larger, and the reliability is risky. Later, the final drive was replaced by a motor and a reduction gear and mounted on the bogie frame, and therefore, it was necessary to design a rear axle box structure to match it.

SUMMERY OF THE UTILITY MODEL

The utility model provides a replace final drive with motor and speed reducer and with its problem of installing need design assorted rear axle case structure on the bogie frame after, among the correlation technique, provided a bull-dozer rear axle case, the design is simple, the manufacturing degree of difficulty reduces, welding process is simple, assembly adjustment is convenient, the cost reduces by a wide margin.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a rear axle box of a bulldozer is characterized in that a rear axle box body comprises a step-shaped bottom plate I and a step-shaped bottom plate II, and the bottom plate II is higher than and longer than the bottom plate I; the rear side of the bottom plate I is a rear side plate, and a rectangular opening is formed in the rear side plate; the left side and the right side of the bottom plate I are both connected with a side vertical plate I, the two sides of the bottom plate II are both connected with side vertical plates II, and flanges are connected to the two side vertical plates II; the side vertical plate I and the side vertical plate II are connected through a connecting plate, the tops of the side vertical plate I and the side vertical plate II are connected with a top plate, and a special-shaped opening is formed in the top plate; the rear axle box body front side is for opening the mouth, II lower parts of bottom plate that open mouth department are equipped with T font step.

As preferred scheme, be provided with backup pad I between bottom plate I and the posterior lateral plate, backup pad I is curved right angle triangle-shaped board for the hypotenuse.

As a preferred scheme, a supporting plate II is symmetrically fixed between the bottom plate II and the two side vertical plates II, and the supporting plate II is a right-angle triangular plate with an arc-shaped bevel edge.

Preferably, the rear side plate is a T-shaped plate.

Preferably, the special-shaped opening comprises an isosceles trapezoid opening and a rectangular opening, wherein two top angles of the isosceles trapezoid opening are smooth, and the length of the bottom edge of the isosceles trapezoid opening is smaller than the length of the long edge of the rectangular opening.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a rear axle case design is simple, makes the degree of difficulty and reduces, and the rear axle case adopts the sheet material to weld, and welding process is simple, then with the front shroud, main frame about the roof beam splice, assembly adjustment is convenient, and the cost reduces by a wide margin, has improved production efficiency greatly.

Drawings

FIG. 1 is a schematic view of the overall structure of the rear axle box of the present invention;

FIG. 2 is a schematic view of the overall structure of the rear axle box of the present invention;

FIG. 3 is a schematic illustration of the rear axle box in connection with the main frame and the front cover.

In the figure:

1. rear axle case body, 101, bottom plate I, 102, bottom plate II, 103, rear side board, 1031, rectangle opening, 104, side riser I, 105, side riser II, 1051, flange, 106, connecting plate, 107, roof, 1071, dysmorphism mouth, 108, backup pad I, 109, backup pad II, 110, T font step, 2, main frame, 3, front shroud.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, the terms "left and right sides", "rear side", "front side", "top" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or structure referred to must have a specific orientation, be constructed in a specific orientation, or be operated, and thus should not be construed as limiting the present invention.

As shown in fig. 1 to 3, a rear axle box of a bulldozer comprises a rear axle box body 1, wherein the interior of the rear axle box body 1 is of a hollow structure, the rear axle box body 1 comprises a step-shaped bottom plate i 101 and a step-shaped bottom plate ii 102, and the bottom plate ii 102 is higher than and longer than the bottom plate i 101; a T-shaped rear side plate 103 is welded on the rear side of the bottom plate I101, and a rectangular opening 1031 with smooth four corners is formed in the rear side plate 103; the left side and the right side of the base plate I101 are both welded with a side vertical plate I104, the left side and the right side of the base plate II 102 are both welded with side vertical plates II 105, and the two side vertical plates II 105 are connected with flanges 1051; a connecting plate 106 is welded between the side vertical plate I104 and the side vertical plate II 105, a top plate 107 is welded at the tops of the side vertical plate I104 and the side vertical plate II 105, a special-shaped opening 1071 is formed in the top plate 107, the special-shaped opening 1071 comprises an isosceles trapezoid opening and a rectangular opening with smooth top angles, and the length of the bottom edge of the isosceles trapezoid opening is smaller than the length of the long edge of the rectangular opening; the front side of the rear axle box body 1 is an open opening, and a T-shaped step 110 is welded to the lower portion of the bottom plate II 102 at the open opening and is convenient to weld with the main frame 2.

In order to improve the strength, a supporting plate I108 is welded between the bottom plate I101 and the rear side plate 103, supporting plates II 109 are symmetrically welded between the bottom plate II 102 and two side vertical plates II 105, and the supporting plates I108 and the supporting plates II 109 are right-angle triangular plates with arc-shaped bevel edges.

In order to avoid the trolley frame, unfilled corners are arranged at the left upper corners of the side vertical plates I104 and the connecting plate 106.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a bull-dozer rear axle case, includes rear axle case body (1), rear axle case body (1) is inside to be hollow structure, its characterized in that: the rear axle box body (1) comprises a step-shaped bottom plate I (101) and a step-shaped bottom plate II (102), and the bottom plate II (102) is higher than and longer than the bottom plate I (101); the rear side of the bottom plate I (101) is a rear side plate (103), and a rectangular opening (1031) is formed in the rear side plate (103); the left side and the right side of the base plate I (101) are both connected with a side vertical plate I (104), the two sides of the base plate II (102) are both connected with side vertical plates II (105), and flanges (1051) are connected on the two side vertical plates II (105); the side vertical plate I (104) is connected with the side vertical plate II (105) through a connecting plate (106), the top of the side vertical plate I (104) is connected with the top plate (107) of the side vertical plate II (105), and the top plate (107) is provided with a special-shaped opening (1071); the front side of the rear axle box body (1) is an open opening, and T-shaped steps (110) are arranged on the lower portion of a bottom plate II (102) at the open opening.

2. The rear axle box of a bulldozer according to claim 1, characterized in that: be provided with backup pad I (108) between bottom plate I (101) and posterior lateral plate (103), backup pad I (108) are curved right triangle shaped plate for the hypotenuse.

3. The rear axle box of a bulldozer according to claim 1, characterized in that: and supporting plates II (109) are symmetrically fixed between the bottom plate II (102) and the two side vertical plates II (105), and the supporting plates II (109) are right-angle triangular plates with arc-shaped bevel edges.

4. The rear axle box of a bulldozer according to claim 1, characterized in that: the rear side plate (103) is a T-shaped plate.

5. The rear axle box of a bulldozer according to claim 1, characterized in that: the special-shaped opening (1071) comprises an isosceles trapezoid opening and a rectangular opening, wherein the two vertex angles of the isosceles trapezoid opening are smooth, and the length of the bottom edge of the isosceles trapezoid opening is smaller than the length of the long edge of the rectangular opening.