An electric bulldozer chassis and bulldozer

Abstract

This invention discloses an electric bulldozer chassis, comprising a chassis assembly with a connecting column at the front end, a balance beam mounting bracket in the middle, and a rear axle housing at the rear. The chassis assembly includes symmetrically arranged chassis bodies, with the two ends of the balance beam mounting bracket embedded and connected inside the chassis bodies. The rear axle housing includes a left housing and a right housing, which are connected by a front panel, a rear panel, a top plate, and a bottom plate to form a housing structure. The rear axle housing contains a connecting pipe and a pivot mounting seat. The two ends of the connecting pipe are connected to the left and right housings respectively. The pivot mounting seat is integrally formed with the bottom plate and its two ends are connected to the left and right housings respectively. Guide rails are symmetrically connected to the inner bottom of the left and right housings. The bottom of the rear panel has an inlet / outlet for the guide rails to slide outwards. The top plate has an installation and maintenance port. The connecting pipe has openings. This invention can adapt to the needs of new energy vehicle chassis and can meet the layout requirements of a large number of electrical components and pipelines.

Description

Technical Field

[0001] This invention belongs to the field of bulldozer chassis technology, specifically relating to an electric bulldozer chassis and a bulldozer. Background Technology

[0002] Bulldozers are efficient and versatile earthmoving and mining machinery, capable of handling various tasks such as site clearing and leveling, foundation pit excavation and backfilling, ore stripping, and ore stockpiling. With the continuous development of new energy technologies and the increasing demand for energy conservation and emission reduction, new energy bulldozers are becoming increasingly essential.

[0003] Currently, the frame structure used in bulldozers is insufficient to meet the needs of new energy bulldozers. Although the existing structure has a certain strength and rigidity, it is difficult to meet the layout requirements of a large number of electrical components and pipelines in new energy bulldozers. Summary of the Invention

[0004] The purpose of this invention is to provide an electric bulldozer chassis and bulldozer that can adapt to the needs of new energy vehicle chassis and meet the requirements for the layout of a large number of electrical components and pipelines.

[0005] To achieve the above objectives, the present invention provides an electric bulldozer chassis, comprising a chassis assembly, a connecting column at the front end of the chassis assembly, a balance beam mounting bracket in the middle, and a rear axle box at the rear. The chassis assembly comprises symmetrically arranged chassis bodies, and the two ends of the balance beam mounting bracket are embedded and connected to the interior of the chassis bodies.

[0006] The rear axle housing includes a left housing and a right housing, which are connected by a front panel, a rear panel, a top plate, and a bottom plate to form a housing structure.

[0007] The rear axle housing is equipped with a connecting pipe and a pivot mounting seat. The two ends of the connecting pipe are connected to the left housing and the right housing, respectively. The pivot mounting seat is located below the connecting pipe and is integrally set with the base plate. Its two ends are connected to the left housing and the right housing, respectively.

[0008] The bottom inner sides of the left and right housings are symmetrically connected with guide rails, and the bottom of the rear panel is provided with an inlet and outlet for the guide rails to slide outwards;

[0009] The top plate is provided with an installation and maintenance port;

[0010] The connecting pipe has an opening.

[0011] As a further aspect of the present invention: the frame body includes an inner frame plate, an outer frame plate, an upper frame beam, and a lower frame beam, and the inner frame plate, the outer frame plate, the upper frame beam, and the lower frame beam form a hollow closed structure.

[0012] As a further aspect of the present invention: the end of the balance beam mounting bracket embedded in the vehicle frame is connected to a stiffening plate, and the stiffening plate is fixedly connected to the upper beam of the vehicle frame, the inner side plate of the vehicle frame, and the lower beam of the vehicle frame.

[0013] As a further aspect of the present invention: the opening includes a front opening and a rear opening, and a reinforcing plate is connected to both the front opening and the rear opening.

[0014] As a further aspect of the present invention: the installation and maintenance port includes a front installation and maintenance port and a rear installation and maintenance port, respectively corresponding to the front opening and the rear opening.

[0015] As a further aspect of the present invention: a drag ring is connected inside the connecting pipe.

[0016] To achieve the above objectives, the present invention also provides a bulldozer, including the aforementioned electric bulldozer chassis.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The pivot mounting base and connecting tube connecting the left and right shells serve as the main load-bearing parts, reducing the load on the front panel, rear panel and top plate, effectively ensuring the strength and rigidity of the frame, while achieving the lightweighting of the bulldozer and adapting to the needs of new energy vehicle frames.

[0019] The openings on the connecting pipes, combined with the installation and maintenance ports on the top plate, greatly facilitate the installation and layout of pipelines.

[0020] The guide rails connecting the bottom of the left and right housings, along with the openings on the rear panel, allow the internal components of the rear axle housing to be pre-installed externally and then installed together into the rear axle housing. This avoids the installation difficulties caused by the limited internal space of the rear axle housing and can meet the layout requirements of a large number of electrical components and pipelines. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the bulldozer chassis structure of the present invention;

[0022] Figure 2 This is an exploded view of the connection between the balance beam mounting bracket and the vehicle frame in this invention;

[0023] Figure 3 This is a schematic diagram of the rear axle box structure in this invention;

[0024] Figure 4 This is an exploded view of the rear axle housing structure in this invention;

[0025] Figure 5 This is a cross-sectional view of the rear axle box structure in this invention;

[0026] Figure 6 This is an exploded view of the connecting pipe structure in this invention.

[0027] In the diagram: 1. Chassis body, 2. Connecting column, 3. Balance beam mounting bracket, 4. Rear axle box, 5. Rib plate, 6. Pivot mounting seat, 7. Connecting pipe, 8. Front mounting access port, 9. Rear mounting access port, 10. Guide rail;

[0028] 1.1 Outer side panel of the frame; 1.2 Lower frame beam; 1.3 Inner side panel of the frame; 1.4 Upper frame beam;

[0029] 4.1 Left shell, 4.2 Right shell, 4.3 Front panel, 4.4 Top panel, 4.5 Rear panel, 4.6 Bottom panel;

[0030] 4.5.1 Import and export;

[0031] 7.1 Front opening, 7.2 Rear opening, 7.3 Reinforcing plate, 7.4 Drag ring. Detailed Implementation

[0032] The present invention will be further illustrated by the following examples.

[0033] like Figure 1 , Figures 3 to 6 As shown, an electric bulldozer frame includes a frame assembly. The frame assembly has a connecting column 2 at the front end, a balance beam mounting bracket 3 in the middle, and a rear axle box 4 at the rear. The frame assembly includes symmetrically arranged frame bodies 1. The two ends of the balance beam mounting bracket 3 are embedded and connected to the inside of the frame body 1. The embedded structure of the balance beam mounting bracket 3 makes the force at the connection mainly borne by the structure itself, reducing the stress on the weld.

[0034] The rear axle housing 4 includes a left housing 4.1 and a right housing 4.2. The left housing 4.1 and the right housing 4.2 are connected by a front panel 4.3, a rear panel 4.5, a top plate 4.4 and a bottom plate 4.6 to form a housing structure.

[0035] The rear axle housing 4 is equipped with a connecting pipe 7 and a pivot mounting seat 6. The two ends of the connecting pipe 7 are connected to the left housing 4.1 and the right housing 4.2, respectively. The pivot mounting seat 6 is located below the connecting pipe 7 and is integrally formed with the base plate 4.6. The two ends are connected to the left housing 4.1 and the right housing 4.2, respectively. The connecting pipe 7 and the pivot mounting seat 6 can effectively strengthen the overall strength of the rear axle housing 4 and reduce the stress on the front panel 4.3, rear panel 4.5 and top plate 4.4 of the rear axle housing 4, so that holes can be flexibly opened on the front panel 4.3, rear panel 4.5 and top plate 4.4 as needed.

[0036] The bottom inner sides of the left housing 4.1 and the right housing 4.2 are symmetrically connected with guide rails 10. The bottom of the rear panel 4.5 is provided with an inlet and outlet 4.5.1 for the guide rails 10 to slide outward; this facilitates the pre-installation of components inside the rear axle housing 4 on the outside of the rear axle housing 4 and their installation into the rear axle housing 4 together, thereby improving the component assembly efficiency.

[0037] An installation and maintenance port is provided on the top plate 4.4;

[0038] The connecting pipe 7 has an opening;

[0039] The opening is used for installing and arranging pipelines. The installation and maintenance port on the top plate 4.4 makes it easier to arrange pipelines.

[0040] Furthermore, such as Figure 2 As shown, the frame body 1 includes an inner frame plate 1.3, an outer frame plate 1.1, an upper frame beam 1.4, and a lower frame beam 1.2. The inner frame plate 1.3, the outer frame plate 1.1, the upper frame beam 1.4, and the lower frame beam 1.2 form a hollow closed structure.

[0041] To further reduce the stress on the welds around the balance beam mounting bracket 3, the end of the balance beam mounting bracket 3 embedded in the frame body 1 is connected with a stiffening plate 5. The stiffening plate 5 is fixedly connected to the upper beam 1.4, the inner side plate 1.3, and the lower beam 1.2 of the frame. Multiple sets of stiffening plates 5 can be set as needed, such as... Figure 2 The diagram shows two groups.

[0042] The balance beam mounting bracket 3, combined with the stiffening plate 5, can also enhance the strength and rigidity of the frame body 1 through an embedded connection, effectively preventing tearing of the inner side plate 1.3 of the frame.

[0043] To make the pipeline layout more organized and facilitate installation and maintenance, further, such as Figure 5 and Figure 6 As shown, the opening includes a front opening 7.1 and a rear opening 7.2. Both the front opening 7.1 and the rear opening 7.2 are connected to a reinforcing plate 7.3. The front opening 7.1 is used for water pipes and hydraulic pipes, and the rear opening 7.2 is used for motor wires. The reinforcing plate 7.3 can effectively compensate for the strength loss caused by the opening of the connecting pipe 7.

[0044] Furthermore, such as Figure 4 and Figure 5 As shown, the installation and maintenance ports include a front installation and maintenance port 8 and a rear installation and maintenance port 9, which correspond to the front opening 7.1 and the rear opening 7.2, respectively. This allows the pipelines to be arranged and installed between the connecting pipe 7 and the top plate 4.4 of the rear axle box 4, thereby improving the space utilization rate inside the rear axle box 4.

[0045] Furthermore, such as Figure 5 and Figure 6As shown, a drag ring 7.4 is connected inside the connecting pipe 7. The drag ring 7.4 can support the inside of the motor, reduce the contact area between the motor and the connecting pipe 7, and facilitate the installation of the motor.

[0046] The present invention also provides a bulldozer, including the above-described electric bulldozer chassis.

Claims

1. An electric bulldozer chassis, comprising a chassis assembly, wherein a connecting column (2) is provided at the front end of the chassis assembly, a balance beam mounting bracket (3) is provided in the middle, and a rear axle box (4) is provided at the rear, the chassis assembly comprising symmetrically arranged chassis bodies (1), characterized in that, The two ends of the balance beam mounting bracket (3) are embedded and connected to the inside of the vehicle frame (1); The rear axle housing (4) includes a left housing (4.1) and a right housing (4.2), which are connected by a front panel (4.3), a rear panel (4.5), a top plate (4.4), and a bottom plate (4.6) to form a housing structure. The rear axle housing (4) is provided with a connecting pipe (7) and a pivot mounting seat (6) inside. The two ends of the connecting pipe (7) are connected to the left housing (4.1) and the right housing (4.2) respectively. The pivot mounting seat (6) is located below the connecting pipe (7) and is integrally set with the base plate (4.6). The two ends are connected to the left housing (4.1) and the right housing (4.2) respectively. The bottom inner sides of the left shell (4.1) and the right shell (4.2) are symmetrically connected with guide rails (10), and the bottom of the rear panel (4.5) is provided with an inlet (4.5.1) for the guide rails (10) to slide outward; The top plate (4.4) is provided with an installation and maintenance port; The connecting pipe (7) is provided with an opening.

2. The electric bulldozer chassis according to claim 1, characterized in that: The frame body (1) includes an inner frame plate (1.3), an outer frame plate (1.1), an upper frame beam (1.4), and a lower frame beam (1.2), which together form a hollow closed structure.

3. The electric bulldozer chassis according to claim 2, characterized in that: The end of the balance beam mounting bracket (3) embedded in the frame body (1) is connected to a stiffening plate (5), and the stiffening plate (5) is fixedly connected to the upper beam (1.4), the inner side plate (1.3), and the lower beam (1.2) of the frame.

4. The electric bulldozer chassis according to any one of claims 1-3, characterized in that: The opening includes a front opening (7.1) and a rear opening (7.2), and a reinforcing plate (7.3) is connected to both the front opening (7.1) and the rear opening (7.2).

5. The electric bulldozer chassis according to claim 4, characterized in that: The installation and maintenance ports include a front installation and maintenance port (8) and a rear installation and maintenance port (9) corresponding to the front opening (7.1) and the rear opening (7.2), respectively.

6. The electric bulldozer chassis according to any one of claims 1-3, characterized in that: The connecting pipe (7) is internally connected to a drag ring (7.4).

7. A bulldozer, characterized in that: Includes the electric bulldozer chassis as described in any one of claims 1-6.

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