CN217515227U

CN217515227U - Electric tractor and frame for same

Info

Publication number: CN217515227U
Application number: CN202221807209.5U
Authority: CN
Inventors: 杨瑞兴; 赵敏; 黄振宇
Original assignee: Zhonglian Agricultural Machinery Co ltd
Current assignee: Zhonglian Agricultural Machinery Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-09-30
Anticipated expiration: 2032-07-12

Abstract

The utility model relates to a tractor field discloses an electric tractor and be used for its frame, and this frame has a pair of longeron (1) that extends parallel to each other and connects in this a plurality of crossbeams between longeron (1), each be provided with power battery package installing support (2) on longeron (1) respectively, the crossbeam is including being located front end crossbeam (3) of longeron (1) front end and be located by a front axle supporting beam (4) of the power battery installation region below that power battery package installing support (2) were injectd, the rear end of longeron (1) is connected with rear axle mounting panel (5), this rear axle mounting panel (5) with longeron (1) with front end crossbeam (3) enclose to close and form into closed area. The utility model discloses a frame has the advantage such as bear reliably, simple structure, can be adapted to electric tractor's part installation better and bear demand such as.

Description

Electric tractor and frame for same

Technical Field

The utility model relates to a tractor field specifically relates to a frame for electric tractor. On the basis, the utility model discloses still relate to an electric tractor including this frame.

Background

With the rapid development of national economy, the degree of agricultural mechanization is higher and higher, but the traditional agricultural machinery has the defects of low energy utilization rate, high energy consumption and the like. In particular, in order to promote industrial green upgrade, accelerate agricultural green development, and enlarge the green environmental protection industry, new energy vehicle products represented by electric vehicles have been greatly improved in recent years, but electric tractors have been developed very slowly. Compared with the traditional internal combustion engine type tractor, the electric tractor has obviously higher energy conversion rate, and the use cost is only about 50 percent of that of the internal combustion engine type tractor.

In the electric tractor, the engine and the gearbox of the traditional tractor are replaced by the motor and the gearbox serving as driving and transmission parts, and the parts such as a power battery pack, a motor controller and the like are correspondingly equipped, so that a new frame suitable for the electric tractor needs to be designed for carrying.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a frame suitable for electric tractor, this frame have bear advantages such as reliable, simple structure.

In order to achieve the above object, an aspect of the present invention provides a frame for an electric tractor, the frame having a pair of longitudinal beams extending parallel to each other and a plurality of cross beams connected between the pair of longitudinal beams, the cross beams including front end cross beams located at front ends of the longitudinal beams, rear ends of the longitudinal beams are connected with a rear axle mounting plate, the rear axle mounting plate and the longitudinal beams and the front end cross beams enclose and form a closed structure.

Preferably, the rear axle mounting plate comprises a mounting plate body connected to the rear end surfaces of a pair of longitudinal beams along a direction perpendicular to the extending direction of the longitudinal beams, a U-shaped plate with two ends respectively connected to the opposite side surfaces of the longitudinal beams and connected with the mounting plate body, and a rib plate connected between the mounting plate body and the U-shaped plate and/or between the U-shaped plate and the longitudinal beams.

Preferably, the longitudinal beams, the transverse beams and the rear axle mounting plate are all made of 16Mn steel, Q355 steel or Q235 steel and are welded into a whole, and/or the thickness of the mounting plate body is not less than 12 mm.

Preferably, the side members are respectively formed to have a C-shaped or rectangular or i-shaped cross section, and a pair of the side members extending in parallel with each other are disposed with open sides thereof opposite to each other.

Preferably, each of the side members has a vertical plate portion extending in a vertical direction, the inner side of the vertical plate portion is welded with a skin plate, and/or the upper side of the side member is formed with a floor mounting hole for mounting a floor and/or a radiator mounting hole for mounting a radiator.

Preferably, each longitudinal beam is correspondingly provided with at least one of a motor bracket, a portal frame mounting bracket and a hood mounting bracket.

Preferably, each longitudinal beam is provided with a power battery pack mounting bracket, and the cross beam comprises a front axle support beam positioned below a power battery mounting area defined by the power battery pack mounting bracket.

Preferably, the front axle support beam has a rectangular cross section, a C-shaped cross section, or an i-shaped cross section and is provided with a front axle pad at a lower side.

Preferably, the cross member includes a pair of the front axle support beams arranged at a distance from each other in the extending direction of the side member, and the side member is formed with a notch open downward at a portion between the front axle support beams.

Preferably, the cross beam comprises a pair of the front axle support beams arranged at intervals in the extending direction of the longitudinal beam and a limit beam positioned between the pair of the front axle support beams and used for limiting the swing of the front axle in the vertical direction beyond a limit position, and a limit block used for abutting against the front axle is arranged on the lower side of the limit beam.

A second aspect of the present invention provides an electric tractor comprising the above vehicle frame.

Through the technical scheme, the utility model discloses constitute confined frame type major structure by longeron, front end crossbeam and rear axle mounting panel to can form electric tractor's chassis through connecting preceding, rear axle, have bear advantages such as reliable, simple structure.

Drawings

Fig. 1 is a schematic top view of a frame for an electric tractor according to a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of the frame of FIG. 1;

fig. 3 is a schematic view of a connection structure of the rear axle mounting plate and the longitudinal beam in fig. 1.

Description of the reference numerals

1-a longitudinal beam; 1 a-floor mounting holes; 1 b-radiator mounting holes; 1 c-a notch; 2, mounting a bracket for the power battery pack; 3-front end beam; 4-a front axle support beam; 41-front axle cushion block; 5-rear axle mounting plate; 6-a limit beam; 61-a limiting block; 7-pasting a board; 8-a motor bracket; 9-installing a bracket on the portal frame; 10-hood mounting bracket.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional words such as "up and down" generally means up and down directions when the frame is assembled to the electric tractor, "front", "rear", etc. should be understood in accordance with the customary directions of the vehicle, and "inside and outside" generally means inside and outside of the contour of the corresponding component itself.

Referring to fig. 1 and 2, a frame for an electric tractor according to a preferred embodiment of the present invention has a pair of longitudinal beams 1 extending parallel to each other and a plurality of cross members connected between the pair of longitudinal beams 1. At different extension positions of the longitudinal beam 1, a plurality of cross beams for different functions can be connected, such as at the position of the front end of the longitudinal beam 1, wherein the cross beam comprises a front end cross beam 3; the rear end of the longitudinal beam 1 is also connected with a rear axle mounting plate 5 used for connecting a rear axle, the rear axle mounting plate 5, the two longitudinal beams 1 and the front axle cross beam 3 enclose to form a closed structure, and therefore, a frame type main body structure is formed, and the rear axle mounting plate has the advantages of bearing, simple structure and the like. The utility model discloses a frame can be through being connected preceding, rear axle and form electric tractor's chassis by a front axle supporting beam 4 and rear axle mounting panel 5 as after respectively to be suitable for parts such as installation driver's cabin, power battery package, motor, reduction gear and electrically controlled device, can effectively solve because of the internal combustion engine type tractor chassis brought when using to electric tractor bears the weight of the scheduling problem.

Fig. 3 shows a connection structure of the rear axle mounting plate and the longitudinal beam 1 in the preferred embodiment of the present invention. The rear axle mounting plate 5 includes a mounting plate body 51, a U-shaped plate 52, and a plurality of rib plates 53. The plate surface direction of the mounting plate body 51 is substantially perpendicular to the extending direction of the side members 1, and may be connected to the rear end surfaces of the pair of side members 1 by welding, riveting, or the like, respectively, thereby serving as a connection base of the rear axle. The two ends of the U-shaped plate 52 are respectively connected to the inner side surfaces of the longitudinal beams 1, which are opposite to each other, the openings of the U-shaped plate 52 are upward and adjacent to the mounting plate body 51, and each part of the U-shaped plate 52 can be respectively perpendicular to the surface direction of the mounting plate body 51 and is connected with the mounting plate body 51 into a whole by welding. The bottom end of the U-shaped plate 52 may extend beyond the bottom wall of the longitudinal beam 1, and a rib plate 53 may be connected between the bottom wall and the outer side of the U-shaped plate 52 to ensure the connection strength between the longitudinal beam 1 and the U-shaped plate 52. In addition, a rib plate 53 may be connected to the position where the mounting plate body 51 is connected to the U-shaped plate 52, and the rib plate 53 may be vertically connected to both the U-shaped plate 52 and the mounting plate body 51 (i.e., two-by-two perpendicular at the connected position), so that the U-shaped plate 52 and the rib plate 53 may support and reinforce the mounting plate body 51 in different directions, which is beneficial to reliably mounting the rear axle and transmitting a large load to the rear axle.

Wherein, each longitudinal beam 1 can be provided with a power battery mounting bracket 2, so that a power battery pack can be mounted on the power battery mounting bracket 2, and the load generated by the power battery pack is transmitted through the longitudinal beam 1. In particular, these power battery pack mounting brackets 2 may be arranged so that the load of the power battery pack is close to the position of the front axle, thereby being able to reliably carry a power battery pack having a relatively large weight, which is advantageous for ensuring the endurance and workability of the electric tractor.

Corresponding to the power battery pack mounting bracket 2, a front axle supporting beam 4 can be connected between the longitudinal beams 1, when the power battery pack is mounted on the frame, the power battery mounting area where the power battery pack is located is positioned above the front axle supporting beam 4 (and a front axle connected to the front axle supporting beam 4), so that the gravity of the power battery pack can be mainly transmitted from the front axle to the ground, and excessive bending moment generated on the longitudinal beam 1 with relatively large extension length is avoided, therefore, the frame is suitable for bearing components such as the power battery pack in an electric tractor. Through the arrangement, the influence of the power battery pack on the stress of the frame can be reduced, and the load of the power battery pack is reasonably distributed to the front axle to replace a front counterweight in a traditional tractor.

The utility model discloses an in the frame, a pair of longeron 1 (left longeron and right longeron) is arranged relatively at an interval each other and is followed the straight line extension respectively to avoid the internal stress because of bending etc. lead to, can have higher rigidity and intensity. Typically, the longitudinal beam 1 can be made of 16Mn, Q355 or Q235 steel material, and is formed by a complete steel material, so as to ensure the bearing capacity of the frame. The stringer 1 may be formed to have any suitable cross-section, such as i-section steel, C-section steel, rectangular section steel, etc. In the illustrated preferred embodiment, the side member 1 is profiled with a steel plate of type Q345 having a C-shaped cross-section and arranged such that the open sides of the left and right side members face each other, whereby the frame can have a relatively narrow width so as to be suitable for walking in narrow spaces in the field.

It is to be understood that the C-shaped cross section of the stringer 1 described herein is not to be construed restrictively as having an arcuate profile, but may have a riser portion extending in the vertical direction and a cross plate portion extending in the horizontal direction on both upper and lower sides of the riser portion, respectively, for arranging and mounting various kinds of related components and structures. One or more flitch plates 7 can be welded on the inner side surface of the vertical plate part (see a cross section A-A shown in figure 2), so that the stress generated on the longitudinal beam 1 by a floor mounting bracket, a working motor and the like can be reduced, and the service life of the frame is prolonged.

Referring to fig. 1, the upper side of the side member 1 may be formed with a floor mounting hole 1a for mounting a floor and a radiator mounting hole 1b for mounting a radiator, which may be appropriately arranged according to the mounting requirements of the respective components. For example, the radiator mounting hole 1b is generally disposed at a portion near the front end of the side member 1 and formed in plural (e.g., four), whereby it can easily carry away heat generated from the power battery pack.

In addition, similar to the power battery pack mounting bracket 2, various brackets such as a motor bracket 8, a gantry mounting bracket 9, a hood mounting bracket 10 and the like can be correspondingly arranged on each longitudinal beam 1 respectively, so as to be used for mounting and bearing relevant functional components such as a traveling motor, a speed reducer, a gantry, a hood and the like. Normally, these brackets can be welded directly to the stringer 1 to ensure a reliable connection.

The utility model discloses an in the frame, each crossbeam also can adopt steel materials such as Q345 to weld to longeron 1. The front axle support beam 4 is used to connect a front axle, and may be formed to have a rectangular cross section, a C-shaped cross section, or an i-shaped cross section. The underside of each front axle support beam 4 may be welded (or connected by riveting, bolting, or other means) with two front axle pads 41, and the two front axle pads 41 may be welded to be symmetrically distributed with respect to the middle plane of the frame, and the connection position of the front axle is positioned by two cylindrical pins, so that the front axle may be connected by bolts.

In the illustrated preferred embodiment, the cross member includes a pair of front axle support beams 4 arranged at a distance from each other in the extending direction of the side member 1, and the side member 1 is formed with a notch 1c opened downward at a portion therebetween for avoiding interference of the connected front axle with the vehicle frame, facilitating reduction of the vehicle frame height and contributing to the running stability of the electric tractor.

A limiting beam 6 can be arranged between the two front axle supporting beams 4, the limiting beam 6 can also be a rectangular steel pipe made of Q345 material, and a limiting block 61 for abutting against the front axle is welded at the lower side. The two limiting blocks 61 can be welded on the limiting beam 6, and the two limiting blocks 61 can be welded to be symmetrically distributed relative to the middle plane of the frame. Through setting up this spacing roof beam 6 and stopper 61, the utility model discloses a frame can effectively restrict the front axle at vertical direction swing angle, avoids its swing to surpass extreme position to guarantee that electric tractor steadily traveles.

The utility model discloses in, the mounting panel body 51 of rear axle mounting panel 5 can adopt thickness not less than 12mm (as 6mm) Q345 steel sheet to make, can weld to the rear end of longeron 1 from this to avoid producing welding deformation. Meanwhile, the rear axle mounting plate 5 may be reinforced by a reinforcing rib, on which a plurality of mounting holes for connecting the rear axle may be formed. The frame can be conveniently manufactured by connecting the rear axle mounting plate 5 and the longitudinal beam 1 in a welding mode and adopting the rear axle mounting plate 5 with proper material and structure, and has the advantages of safety, reliability and the like.

On this basis, the utility model also provides an electric tractor including above-mentioned frame, this frame can be adapted to electric tractor's part installation better and bear demand such as etc.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. However, these simple modifications and combinations should also be considered as disclosed in the present invention, and all fall within the scope of protection of the present invention.

Claims

1. A frame for an electric tractor, characterized in that the frame has a pair of longitudinal beams (1) extending parallel to each other and a plurality of cross beams connected between the longitudinal beams (1), the cross beams include a front end cross beam (3) located at the front end of the longitudinal beams (1), the rear end of the longitudinal beams (1) is connected with a rear axle mounting plate (5), and the rear axle mounting plate (5) is enclosed with the longitudinal beams (1) and the front end cross beam (3) to form a closed structure.

2. The frame for an electric tractor according to claim 1, characterized in that the rear axle mounting plate (5) comprises a mounting plate body (51) connected to rear end surfaces of a pair of the longitudinal beams (1) in a direction perpendicular to an extending direction of the longitudinal beams (1), a U-shaped plate (52) having both ends connected to opposite sides of the pair of the longitudinal beams (1) respectively and joined to the mounting plate body (51), and a rib plate (53) connected between the mounting plate body (51) and the U-shaped plate (52) and/or between the U-shaped plate (52) and the longitudinal beams (1).

3. Frame for an electric tractor according to claim 2, characterized in that said longitudinal beams (1) and said transverse beams and said rear axle mounting plate (5) are all of 16Mn steel, Q355 steel or Q235 steel and are welded to each other as one piece and/or said mounting plate body (51) has a thickness not less than 12 mm.

4. The frame for an electric tractor according to claim 1, characterized in that the side members (1) are respectively formed to have a C-shaped or rectangular or i-shaped cross section, and a pair of the side members (1) extending in parallel with each other are arranged with their open sides opposed to each other.

5. The frame for an electric tractor according to claim 4, characterized in that each of the side members (1) has a vertical plate portion extending in a vertical direction, an attachment plate (7) is welded to an inner side of the vertical plate portion, and/or a floor mounting hole (1a) for mounting a floor and/or a radiator mounting hole (1b) for mounting a radiator is formed on an upper side of the side member (1).

6. The frame for the electric tractor according to claim 1, characterized in that at least one of a motor bracket (8), a portal frame mounting bracket (9) and a hood mounting bracket (10) is correspondingly arranged on each longitudinal beam (1).

7. A frame for an electric tractor according to claim 1, characterized in that each of said longitudinal beams (1) is provided with a power battery pack mounting bracket (2), and said cross beam comprises a front axle support beam (4) located below a power battery mounting area defined by the power battery pack mounting bracket (2).

8. Frame for an electric tractor according to claim 7, characterized in that the front axle supporting beam (4) has a rectangular, C-shaped or I-shaped cross section and is provided with a front axle pad (41) at the lower side.

9. The frame for an electric tractor according to claim 7, characterized in that the cross member includes a pair of the front axle support beams (4) arranged at a distance from each other in the extending direction of the side members (1), and the side members (1) are formed with a notch (1c) opening downward at a portion located between the front axle support beams (4).

10. Frame for an electric tractor according to claim 7, characterized in that the cross member comprises a pair of said front axle support beams (4) arranged at a distance from each other in the direction of extension of the longitudinal beams (1) and a limit beam (6) between the pair of front axle support beams (4) for limiting the swing of the front axle beyond a limit position in the vertical direction, the lower side of the limit beam (6) being provided with a limit block (61) for abutting against the front axle.

11. An electric tractor characterized in that it comprises a frame according to any one of claims 1 to 10.