Integral plate spring seat, chassis structure and engineering vehicle

Abstract

The utility model discloses an integral plate spring seat, a chassis structure and an engineering vehicle. The integral plate spring seat comprises a plate spring seat main body, widened bosses are arranged in root areas of two side panels of the plate spring seat body, root cracking after the side faces of the plate spring seat are abraded and thinned by a plate spring is prevented, transition connection areas of the bosses and the side panels are in fillet transition, and stress concentration is avoided. The top portions of the inner side vertical faces, facing the center of a plate spring, of two side panels of the plate spring seat body are each provided with a notch, so that gaps between the side panels and the plate spring in the front-back direction are increased, interference during movement limit is avoided, meanwhile, it is guaranteed that the side faces have the large abrasion area, and transition connection areas of the notches and the side panels are in round corner transition. And stress concentration is avoided.

Description

Technical Field

[0001] The utility model relates to an integral leaf spring seat, belonging to the technical field of leaf spring seats. Background Art

[0002] Wide-body mining dump trucks operate in harsh road conditions, with large vertical and lateral loads on the vehicles. The leaf spring seat is prone to cracking after wear at the root where the leaf spring fits in, resulting in a short replacement cycle and high maintenance costs.

[0003] At the same time, because the axle has a large upper and lower movement limit with the balanced suspension, it is easy to cause motion interference under extreme conditions, which may lead to the breakage of the center bolt of the leaf spring. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the utility model provides an integral leaf spring seat. In order to prevent the root cracking of the leaf spring seat side after the leaf spring seat side is worn and thinned by the leaf spring, the root of the leaf spring seat side plate is widened to reduce stress and avoid cracking.

[0005] The utility model is implemented according to the following technical solutions:

[0006] In a first aspect, the utility model provides an integral leaf spring seat, comprising a leaf spring seat body; the root areas of the two side panels of the leaf spring seat body are both provided with widened bosses, and the transition connection areas between the bosses and the side panels adopt a rounded transition; the two side panels of the leaf spring seat body are each provided with a notch at the top of the inner vertical surface facing the center of the leaf spring to increase the gap between them and the leaf spring in the front-to-back direction, and the transition connection areas between the notch and the side panels adopt a rounded transition.

[0007] In some embodiments, a plurality of bolt holes are provided on the bottom plate of the leaf spring seat body, and a rounded transition is provided at the root area of the side panel at the bolt holes.

[0008] In some embodiments, a weight reduction area is provided on the bottom surface of the bottom plate of the leaf spring seat body.

[0009] In some embodiments, the weight-reducing area consists of at least one weight-reducing groove and at least one weight-reducing hole.

[0010] In some embodiments, the weight-reducing area comprises a weight-reducing hole located in the center area of the bottom plate and four weight-reducing grooves arranged around the weight-reducing hole.

[0011] In some embodiments, the bottom plate of the leaf spring seat body protrudes outward on the side elevation facing the center of the axle to form an external connecting plate for assembling the rubber limit block.

[0012] In some embodiments, the transition connection area between the external plate and the base plate body adopts a rounded transition.

[0013] In some embodiments, the leaf spring seat body is an integral casting and is made of wear-resistant material.

[0014] In a second aspect, the present invention provides a chassis structure comprising two leaf springs, both ends of the leaf springs being overlapped between the center and rear axles via the above-mentioned integral leaf spring seat.

[0015] In a third aspect, the present invention provides an engineering vehicle comprising the above-mentioned chassis structure.

[0016] Beneficial effects of the utility model:

[0017] The four added bosses and rounded corner transitions can effectively ensure the leaf spring seat's ability to resist lateral loads and avoid cracking; the setting of the upper notch ensures the movement space of the axle and suspension, and will not cause the leaf spring center bolt to break due to interference. At the same time, the side panel area is not reduced, ensuring the wear resistance of the side; the design of the bottom weight-reducing grooves and weight-reducing holes reduces material usage costs while effectively avoiding internal casting defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0019] In the attached figure:

[0020] Figure 1 This is an axonometric view of the integral leaf spring seat of the utility model;

[0021] Figure 2 This is a combined view of the side view and axonometric view of the integral leaf spring seat of the present invention (a is a side view, b is an axonometric view);

[0022] Figure 3 This is a view of the bottom of the mounting surface of the integral leaf spring seat of the present invention;

[0023] Figure 4 This is a schematic diagram of the arrangement of the integral leaf spring seat of the utility model on the center and rear axles.

[0024] Figure identification: 1-side panel, 2-bottom plate, 3-external plate, 4-boss, 5-notch, 6-bolt hole, 7-weight reduction groove, 8-weight reduction hole, 9-leaf spring, a-rounded transition, b-rounded transition, c-rounded transition, d-rounded transition.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0029] like Figure 1 、 Figure 2 As shown, an integral leaf spring seat includes a leaf spring seat body; the root area of each of the two side panels 1 of the leaf spring seat body is provided with a widened boss 4, and the transition connection area between the boss 4 and the side panel 1 adopts a rounded transition a; the two side panels 1 of the leaf spring seat body are each provided with a notch 5 at the top of the inner side vertical surface facing the center of the leaf spring 9 to increase the gap between them and the leaf spring 9 in the front-to-back direction, and the transition connection area between the notch 5 and the side panel 1 adopts a rounded transition b.

[0030] From the above, it can be seen that four widened bosses 4 are provided in the root area of the two side panels 1 to increase the strength of the root and avoid cracking caused by excessive lateral force. At the same time, a rounded transition a is used in the transition connection area between the boss 4 and the side panel 1 to avoid stress concentration; a notch 5 is provided at the top of the inner vertical surface of each side panel 1 to ensure that the leaf spring 9 has sufficient contact and wear area with the two side panels 1, while sufficient space for movement interference avoidance can be reserved above. At the same time, a rounded transition b is used in the transition connection area between the notch 5 and the side panel 1 to avoid stress concentration.

[0031] For further solutions, please refer to Figure 1 、 Figure 2 As shown, a plurality of bolt holes 6 are provided on the bottom plate 2 of the leaf spring seat body, and a rounded transition c is provided at the root area of the side panel 1 at the bolt holes 6 to avoid stress concentration.

[0032] Further solutions, such as Figure 3 As shown, a weight-reducing area is provided on the bottom surface of the base plate 2 of the leaf spring seat body. While ensuring the supporting strength of the leaf spring seat, the weight-reducing area can reduce the weight while also effectively avoiding the risk of internal casting defects caused by the excessive thickness of the leaf spring seat body.

[0033] For further solutions, please refer to Figure 3 As shown, the weight-reducing area is composed of at least one weight-reducing groove 7 and at least one weight-reducing hole 8 .

[0034] The preferred solution is to continue to refer to Figure 3 As shown, the weight-reducing area is composed of a weight-reducing hole 8 located in the center and four weight-reducing grooves 7 surrounding the weight-reducing hole 7 .

[0035] For further solutions, please refer to Figure 1 、 Figure 2 、 Figure 3 As shown, the bottom plate 2 of the leaf spring seat body protrudes outward on the side elevation facing the center of the axle to form an external plate 3 for assembling a rubber limit block; the rubber limit block can cushion the impact of the axle on the frame when it jumps up, and also plays a limiting role.

[0036] In a further solution, a rounded transition d is used in the transition connection area between the external plate 3 and the main body of the bottom plate 2 to avoid stress concentration.

[0037] In a further solution, the leaf spring seat body is an integral casting and is made of austempered ductile iron with wear-resistant properties.

[0038] like Figure 4 As shown, a chassis structure includes two leaf springs 9, the two ends of which are connected between the middle and rear axles through an integral leaf spring seat. When the leaf spring seat is installed on the middle and rear axle assembly, Figure 2 The notches 5 are arranged relatively to reserve sufficient front-to-rear motion interference avoidance area for the leaf spring 9, ensuring that when the middle and rear axles jump up and down significantly with the leaf springs of the balancing suspension and their connecting thrust rods, Figure 4 The leaf spring referred to in the figure will not interfere with the upper surface of the leaf spring seat, thereby avoiding the risk of the leaf spring shearing off the center bolt and breaking.

[0039] In summary, the utility model provides an integral leaf spring seat. The added four bosses and rounded corner transitions can effectively ensure the leaf spring seat's ability to resist lateral loads and avoid cracking problems. The setting of the upper notch ensures the movement space of the axle and suspension, and will not cause the center bolt of the leaf spring to break due to interference. At the same time, the side panel area is not reduced, ensuring the wear resistance of the side. The design of the bottom weight-reducing groove and weight-reducing hole reduces the material usage cost while effectively avoiding internal casting defects.

[0040] The engineering vehicle provided by the present invention is described below. The engineering vehicle described below and the chassis structure described above can be referenced to each other.

[0041] The utility model provides an engineering vehicle, which may include the chassis structure as described in any one of the above embodiments.

[0042] The beneficial effects achieved by the engineering vehicle provided by the present invention are consistent with the beneficial effects achieved by the chassis structure provided by the present invention, and will not be described in detail here.

[0043] It should be noted that the above-mentioned engineering vehicle may be a wide-body dump truck for mining.

[0044] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0045] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0046] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An integral leaf spring seat, characterized in that: including a leaf spring seat body; The root areas of the two side panels of the leaf spring seat body are both provided with widened bosses, and the transition areas between the bosses and the side panels adopt rounded transitions; The two side panels of the leaf spring seat body are each provided with a notch at the top of the inner side elevation facing the center of the leaf spring to increase the gap between them and the leaf spring in the front-to-back direction, and the transition connection area between the notch and the side panel adopts a rounded transition.

2. The integrated leaf spring seat according to claim 1, characterized in that: A plurality of bolt holes are provided on the bottom plate of the leaf spring seat body, and a rounded transition is provided at the root area of the side panel at the bolt holes.

3. The integrated leaf spring seat according to claim 1, characterized in that: A weight reduction area is provided on the bottom surface of the bottom plate of the leaf spring seat body.

4. The integrated leaf spring seat according to claim 3, characterized in that: The weight-reducing area consists of at least one weight-reducing groove and at least one weight-reducing hole.

5. The integrated leaf spring seat according to claim 4, characterized in that: The weight-reducing area consists of a weight-reducing hole located in the center area of the bottom plate and four weight-reducing grooves arranged around the weight-reducing hole.

6. The integrated leaf spring seat according to claim 1, characterized in that: The bottom plate of the leaf spring seat body protrudes outwards on the side elevation facing the center of the axle to form an external connecting plate for assembling the rubber limiting block.

7. The integrated leaf spring seat according to claim 6, characterized in that: The transition connection area between the external connecting plate and the bottom plate body adopts rounded corner transition.

8. The integrated leaf spring seat according to claim 1, characterized in that: The leaf spring seat body is an integral casting and is made of wear-resistant material.

9. A chassis structure comprising two leaf springs, characterized in that: The two ends of the leaf spring are each overlapped between the center and rear axles through an integral leaf spring seat according to any one of claims 1 to 8.

10. An engineering vehicle, characterized in that: Including the chassis structure described in claim 9.

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