Car body bracket for assembling and manufacturing chassis of passenger car

Abstract

The utility model provides a car body support for assembling and manufacturing a passenger car chassis, which comprises a ladder assembly base and a supporting seat plate, the supporting seat plate is a rigid material plate body component, the upper side edge of the supporting seat plate is provided with a semi-circular arc notch wedged with the circumference of a hub, and the semi-circular arc notch is perpendicular to a supporting table top of the ladder assembly base. The plate is further provided with bolt fixing holes corresponding to tire fixing bolts after the notches are wedged with the circumferential edge of the hub. According to the technical scheme, the support has the technical advantages of being small in size and small in occupied space under a vehicle, it is guaranteed that enough assembling operation space under the vehicle is provided, the support is a supporting device for supporting the tire mounting ends of the front axle and the rear axle of the vehicle body, the supporting structure of the support is more reasonable, and the stability, reliability and safety of supporting the vehicle body are greatly improved.

Description

Technical Field

[0001] The utility model relates to a load-bearing bracket, in particular to a body under-supporting load-bearing bracket used for assembling and manufacturing a chassis of a large passenger car. Background Art

[0002] In particular, the full-load passenger car chassis assembly line has a ground track A1 running through each station of the assembly line, and the full-load body is supported on the body longitudinal beam by the track elevated trolley A2 at the front, middle and rear positions under the body, such as Figure 1 , Figure 2 As shown. The existing support methods have the following technical problems that cannot be ignored:

[0003] First, as can be seen from the figure, the rail elevated trolley A2 occupies a large space under the vehicle, which brings considerable interference and inconvenience to the assembly operation under the vehicle, especially the rear axle support position, which often interferes with the engine or motor assembly position, greatly affecting the assembly operation of the engine or motor;

[0004] Second, the existing support structure is supported on the longitudinal beam of the vehicle body, which has technical problems such as poor stability and reliability of the support center of gravity. In addition, due to the limitations of the chassis and underframe structure of different models, the available support positions for some models are limited, resulting in more unreasonable support methods for these models and potential safety hazards in under-vehicle operations.

[0005] Third, the body is hoisted online, and when combined with the elevated track trolley, the operator needs to adjust the position of the elevated track trolley under the vehicle, which poses obvious safety hazards;

[0006] Fourth, the support height of the rail elevated trolley A2 is not easy to adjust. Different models need to be adjusted in multiple directions, front and back, left and right, up and down, which is time-consuming and labor-intensive, resulting in low efficiency.

[0007] Fifth, the existing rail overhead trolleys are heavy and large in size. The forklift can only transport one trolley from the offline workstation to the online workstation at a time. The entire set of assembly rail overhead trolleys needs to be transported three times, which is one of the technical factors affecting production efficiency.

[0008] In addition, most passenger car chassis currently use an air suspension structure. After the suspension system and axle are assembled, in order to prevent the airbag from being pulled apart due to the axle's own weight, auxiliary tooling is required to rigidly fix the axle to the body. This increases the operating procedures and operating intensity, which is another technical factor that affects product quality and production efficiency. Summary of the invention

[0009] The invention purpose of this patent application is to solve the above technical problems existing in the existing support device for assembling the chassis of a full-load passenger car, and to provide a body bracket for assembling and manufacturing the chassis of a passenger car.

[0010] The technical solution of the body bracket for bus chassis assembly and manufacturing provided by this patent application mainly includes:

[0011] A body bracket for assembly and manufacturing of passenger car chassis includes a ladder frame base and a support seat plate; the support seat plate is a rigid material plate component, which is perpendicular to the support table of the ladder frame base, and its upper side edge is provided with a semicircular arc notch that is wedged with the circumference of the wheel hub, and the support seat plate is provided with bolt fixing holes that correspond to the tire fixing bolts after the notch is wedged with the circumference of the wheel hub; a roller is provided at the bottom of the ladder frame base.

[0012] One preferred option of the above overall technical solution is that the bolt fixing hole is an arc-shaped elongated hole.

[0013] In one preferred option of the above overall technical solution, the central angle of the arc-shaped bolt fixing hole is 15°.

[0014] One of the preferred options of the above-mentioned overall technical solution is that the support seat plate is also fixedly provided with a horizontal plate at the bottom, which constitutes an "L"-shaped plate body component as a whole.

[0015] One of the preferred options of the above-mentioned overall technical solution is that the two sides of the lower half of the support seat plate are symmetrically retracted inward to form an inverted trapezoid.

[0016] One of the preferred options of the above-mentioned overall technical solution is that the support plate has a reinforcing rib fixedly provided between its lower inverted trapezoidal bevel and the horizontal plate.

[0017] One of the preferred options of the above-mentioned overall technical solution, the ladder frame base is a rigid support frame with a small top and a large bottom plate, which is fixedly formed by four vertical support rods and three groups of upper, middle and lower transverse support rods. Horizontal beams are additionally arranged on two relatively outer sides of the upper part of the ladder frame base to form the same upper plane as the support table surface, and the horizontal beams are fixed by welding vertical reinforcement ribs fixed to the outer sides of the vertical support rods.

[0018] One of the preferred options of the above overall technical solution is that longitudinal limiting reinforcement plates with a height higher than the plane of the supporting table are fixed on both sides of the supporting table.

[0019] The technical solution of the body bracket for assembly and manufacturing of passenger car chassis disclosed in this patent application has the technical advantages of small size and small space occupied under the vehicle, ensuring that there is sufficient assembly operation space under the vehicle, creating conditions for improving production efficiency; it also has the technical advantage of light weight, and each forklift can complete the transportation of eight body brackets, which greatly improves the transportation efficiency; more importantly, the bracket is fixedly supported on the tire mounting ends of the front axle 4 and the rear axle 5 of the vehicle body 1, and its four-point support structure is more reasonable, which greatly improves the stability, reliability and safety of the vehicle body support, and when the vehicle model is changed, only the corresponding support seat plate needs to be replaced, which has strong applicability and broadens the scope of assembly application; for vehicles equipped with air suspension systems, the auxiliary tooling for fixing the airbags is eliminated, further improving the assembly operation efficiency; this technical solution is more suitable for production applications with a ground double-plate chain 3 as a production line conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 and Figure 2 They are respectively the main view of the body support and the lateral support structure diagram during the assembly of the current full-load bus chassis.

[0021] Figure 3 This is a diagram of the supporting state of the full-load passenger car chassis of this patent application.

[0022] Figure 4 , Figure 6 They are respectively the front axle and rear axle support structure diagrams of this patent application.

[0023] Figure 5 for Figure 4 Side view of the structure in the supported state.

[0024] Figure 7 and Figure 8 The front view and side view of the support seat plate are respectively provided.

[0025] Fig. 9 This is a partial enlarged structural diagram of the ladder frame base. DETAILED DESCRIPTION

[0026] The following will elaborate on the technical content of the body bracket for bus chassis assembly and manufacturing of this patent application, and explain the application technology effect.

[0027] The vehicle body support 2 for manufacturing and assembling the chassis of a passenger vehicle comprises a ladder frame base 22 and a support seat plate 21 .

[0028] The ladder frame base 21 is a rigid support frame with a small top and a large bottom, which is fixedly formed by four vertical support rods 23 and three groups of upper, middle and lower transverse support rods 24. Rollers 27 are provided at the four corners of the bottom of the ladder frame base 22 for movement.

[0029] The support base plate 21 is a rigid plate member, which is vertically placed on the support table 20 of the ladder frame base 22. Figure 7 As shown, the upper side edge of the support seat plate 21 is provided with an arc-shaped recess 210 which is wedged with the circumference of the wheel hub 6. When the recess 210 is wedged with the circumference of the wheel hub 6, bolt fixing holes 211 are provided on the support seat plate 21 at positions corresponding to the tire fixing bolts.

[0030] In this embodiment, the bolt fixing hole 211 is an arc-shaped long hole, and the optimal central angle α thereof is 15°, so as to meet the adaptability of batch use with considerable assembly errors of tire fixing bolts.

[0031] In order to enhance the stability of the support, especially to meet the stability requirements of the front axle support, the support seat plate 21 is further fixedly provided with a horizontal plate 212 at its bottom, forming an overall "L"-shaped plate body component.

[0032] Under the premise of ensuring the supporting performance, after the hub fixed support is assembled, it is also necessary to ensure that the whole after assembly has no extra edges and corners to prevent interference with the operation under the vehicle. The two sides of the lower half of the support seat plate 21 are symmetrically retracted to form an inverted trapezoid. For the "L" structure, the width of the horizontal plate 212 is the same as the bottom edge of the support seat plate 21, and a reinforcing rib 213 is fixedly welded between the inverted trapezoidal oblique edge and the side edge of the horizontal plate 212.

[0033] The support seat plate 21 is fixed to the tire mounting surface of the wheel hub 6 by bolts passing through the bolt fixing holes 211 and the tire fixing holes on the wheel hub 6, and is seated on the support table 20 of the ladder frame base 22. Longitudinal limit reinforcement plates 28 with a height higher than the plane of the support table 20 are fixed on both sides of the support table 20, and the limit and reinforcement support of the support seat plate 21 are enhanced by both sides.

[0034] In order to solve the technical problem that the upper supporting plane of the ladder frame base 22 may not meet the supporting size due to the trapezoidal structure, in the structure of this embodiment, horizontal beams 25 that form the same plane as the supporting table 20 are additionally provided on the two relatively outer sides of the upper part of the ladder frame base 22, and the horizontal beams 25 are welded and fixed by vertical reinforcement ribs 26 fixed to the outer sides of the vertical support rods 23, and the outer sides of the two horizontal beams 25 are fixed with the longitudinal limiting reinforcement plates 28.

Claims

1. A body bracket for bus chassis assembly and manufacturing, characterized in that: The invention comprises a ladder frame base (22) and a support seat plate (21); the support seat plate (21) is a rigid material plate component, which is perpendicular to the support table surface (20) of the ladder frame base, and its upper side edge is provided with a semicircular arc notch (210) which is wedged with the circumference of the wheel hub, and the support seat plate (21) is provided with a bolt fixing hole (211) which corresponds to the tire fixing bolt after the notch (210) is wedged with the circumference of the wheel hub; and a roller (27) is provided at the bottom of the ladder frame base (22).

2. The vehicle body bracket for bus chassis assembly and manufacturing according to claim 1, characterized in that: The bolt fixing hole (211) is an arc-shaped long hole.

3. The vehicle body bracket for bus chassis assembly and manufacturing according to claim 2, characterized in that: The central angle of the bolt fixing hole (211) is 15°.

4. The vehicle body bracket for bus chassis assembly and manufacturing according to claim 1, characterized in that: The support seat plate (21) is also fixedly provided with a horizontal plate (212) at its bottom, forming an "L"-shaped plate body component as a whole.

5. The vehicle body bracket for bus chassis assembly and manufacturing according to claim 1, characterized in that: The two sides of the lower half of the support seat plate (21) are symmetrically retracted to form an inverted trapezoid.

6. The vehicle body bracket for bus chassis assembly and manufacturing according to claim 4, characterized in that: The two sides of the lower half of the support seat plate (21) are symmetrically retracted to form an inverted trapezoid.

7. The vehicle body bracket for assembly and manufacturing of a passenger vehicle chassis according to claim 6, characterized in that: The support seat plate (21) has a reinforcing rib (213) fixedly disposed between the lower inverted trapezoidal oblique edge and the horizontal plate (212).

8. The vehicle body bracket for bus chassis assembly and manufacturing according to claim 1, characterized in that: The ladder frame base (22) is a rigid support frame with a small top and a large bottom, which is fixedly formed by four vertical support rods (23) and three groups of upper, middle and lower transverse support rods (24). Horizontal beams (25) are additionally provided on two opposite outer sides of the upper part of the ladder frame base (22) to form the same upper plane as the support table (20). The horizontal beams (25) are fixed by welding with vertical reinforcing ribs (26) fixed on the outer sides of the vertical support rods (23).

9. The vehicle body bracket for assembly and manufacturing of a passenger vehicle chassis according to claim 1 or 8, characterized in that: Longitudinal limit reinforcing plates (28) with a height higher than the plane of the supporting table surface (20) are fixed on both sides of the supporting table surface (20).

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