Suspension system, chassis and dumper

Abstract

The utility model discloses a suspension system, a chassis and a dumper. The suspension system comprises a front suspension and a rear suspension, the front suspension is arranged in a hydro-pneumatic spring mode and comprises a front axle hydro-pneumatic cylinder, a front suspension pull rod support assembly, a lower gantry beam, a transverse thrust pull rod and a front longitudinal thrust pull rod. The rear suspension is arranged in a steel plate spring mode and comprises an axle end support, a beam end support, a rear suspension upper longitudinal thrust pull rod, a plate spring seat, a rear suspension steel plate spring assembly, a balanced suspension assembly, a lower thrust rod seat and a rear suspension lower longitudinal thrust pull rod. Force and torque are effectively transmitted to a frame and a vehicle body, and the impact resistance of the front suspension and the overall strength of the rear suspension are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of suspension systems, belong to mine dump truck field. BACKGROUND

[0002] Mining non-road wide-body dump truck often travels in complex working conditions such as rugged road, steep slope, sharp turn, and higher requirements for the strength and performance of the suspension system. At present, the main load is 90t, and the full leaf spring suspension is used.

[0003] With full leaf spring suspension, on the one hand, multiple leaf springs are mainly used to improve the load bearing and damping effect of the vehicle. With the continuous increase of load bearing tonnage and the deterioration of transportation conditions, the leaf spring may break, resulting in reduced transportation efficiency. On the other hand, multiple leaf springs are stacked, which increases the overall weight and increases the overall weight of the vehicle, affecting the fuel efficiency and operability of the vehicle. SUMMARY

[0004] According to the deficiencies of the prior art, the utility model provides a kind of suspension systems, solve the frequent fracture fault of leaf spring suspension in related art, the technical problem that bearing and damping capacity do not match with large load.

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

[0006] In the first aspect, the utility model provides a kind of suspension systems, including front suspension and rear suspension;The front suspension is arranged in the form of oil gas spring;The rear suspension is arranged in the form of steel plate spring, comprising:

[0007] Bridge end support is fixedly connected to the top surface of the middle bridge and rear axle between the two longitudinal beams of the vehicle frame respectively;

[0008] Beam end support is fixedly connected to the inner side of the two longitudinal beams of the vehicle frame respectively;

[0009] Rear suspension upper longitudinal thrust pull rod is hingedly connected between the bridge end support and the beam end support;

[0010] Leaf spring seat is fixed to the top surface of the middle bridge and rear axle at the outer side of the two longitudinal beams of the vehicle frame respectively;

[0011] Rear suspension steel plate spring assembly is installed in two leaf spring seats on the middle bridge and rear axle on the same side respectively;

[0012] Balancing suspension assembly is fixedly connected to the two longitudinal beams of the vehicle frame, and each end of the balancing suspension assembly is fixedly connected with a bearing hub, and the bearing hub is fixedly connected with the rear suspension steel plate spring assembly above it;

[0013] Lower thrust rod seat is fixedly connected to the bottom surface of the middle bridge and rear axle at the outer side of the two longitudinal beams of the vehicle frame respectively;

[0014] rear suspension lower longitudinal thrust link, hinged between the lower thrust rod seat and the balance suspension assembly.

[0015] In some embodiments, the number of rear suspension lower longitudinal thrust links is four, two of which are respectively hinged between two lower thrust rod seats on the middle axle and the balance suspension assembly, and the other two of which are respectively hinged between two lower thrust rod seats on the rear axle and the balance suspension assembly.

[0016] In some embodiments, the number of rear suspension upper longitudinal thrust links is four, two of which are respectively hinged between two beam end supports and axle end supports on the middle axle, and the other two of which are respectively hinged between two beam end supports and axle end supports on the rear axle.

[0017] In some embodiments, the outer side of the longitudinal beam of the frame is fixed with two wear plates in the area facing the rear suspension leaf spring assembly.

[0018] In some embodiments, the front end of the rear suspension leaf spring assembly is inserted into a leaf spring seat on the middle axle, the rear end of the rear suspension leaf spring assembly is inserted into a leaf spring seat on the rear axle, and the rear suspension leaf spring assembly and the leaf spring seats are in clearance fit, so that the rear suspension leaf spring assembly can slide in the leaf spring seats.

[0019] In some embodiments, the rear suspension leaf spring assembly is formed by stacking several leaf springs of the same length at the bottom and stacking leaf springs of gradually decreasing lengths at the middle and upper parts.

[0020] In some embodiments, the front suspension comprises:

[0021] front axle oil gas cylinder, the top of which is hinged with the oil cylinder support of the longitudinal beam of the frame, and the bottom of which is hinged with the front axle;

[0022] front suspension link support assembly, fixedly connected with the longitudinal beam of the frame;

[0023] horizontal thrust link, one end of which is hinged with the lower gantry fixed on the frame, and the other end of which is hinged with the front axle;

[0024] front longitudinal thrust link, hinged between the front suspension link support assembly and the front axle.

[0025] In some embodiments, the number of front longitudinal thrust links is four, two of which are hinged between the front axle and one side end of the front suspension link support assembly in an up-down interval arrangement, and the other two of which are hinged between the front axle and the other side end of the front suspension link support assembly in an up-down interval arrangement.

[0026] The utility model provides a kind of chassis, comprising:

[0027] Front axle, middle axle and rear axle;

[0028] Frame, two longitudinal beams arranged side by side in the same plane at a predetermined interval and a cross beam fixedly connected with the two longitudinal beams;

[0029] The suspension system described above is used to connect the frame with the front axle, middle axle and rear axle together.

[0030] The third aspect of the utility model provides a dump truck, comprising the suspension system described above;Or, comprising the chassis described above.

[0031] Based on the application of the above technical solution, the utility model has the beneficial effects compared with the prior art:

[0032] 1、The utility model provides a kind of arrangement form that front suspension is oil gas spring, absorbs, moderates the vibration, impact of road transmission, plays the role of spring and shock absorber simultaneously, saves traditional spring and leaf spring, improves the impact resistance of front axle under heavy load downhill section.

[0033] 2、The utility model provides a kind of arrangement form that rear suspension is steel plate spring, with simple structure, reliable work, low cost, easy maintenance and other advantages, improve the material quality of leaf spring in the utility model, increase the thickness of leaf spring, reduce the number of leaf spring, which helps vehicle to reduce the motion noise, embodies the lightweight design concept, improves the driving smoothness and driving comfort of vehicle.

[0034] 3、The front suspension of the utility model provides a kind of four-bar linkage plus cross tie arrangement form, rear suspension provides a kind of four-bar linkage plus balance suspension and V-shaped tie rod arrangement form, not only prevents front axle, middle axle and rear axle from moving forward and backward, but also prevents front axle, middle axle and rear axle from moving left and right, effectively reduces suspension roll, improves the safety and stability of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are part of the utility model, serve to provide a further understanding of the utility model, and the illustrative embodiments of the utility model and their descriptions serve to explain the utility model, but do not constitute undue limitation on the utility model. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained according to these drawings without creative labor for ordinary skilled in the art.

[0036] In the drawings:

[0037] Figure 1 It is a kind of chassis overall structure schematic diagram described in the utility model;

[0038] Figure 2 is a front suspension partial schematic view of the vehicle 1; Figure 1

[0039] Figure 3 is a rear suspension partial schematic view of the vehicle 1; Figure 1

[0040] Figure 4 is another rear suspension partial schematic view of the vehicle 1; Figure 1

[0041] Figure 5 is a rear suspension partial schematic view of the vehicle 1 without frame cross beam. Figure 1

[0042] BRIEF DESCRIPTION OF DRAWINGS 1. Longitudinal beam; 2. Front axle; 3. Middle axle; 4. Rear axle; 5. Rear suspension leaf spring assembly; 6. Front suspension pull rod support assembly; 7. Front axle oil gas cylinder; 8. Lower gantry beam; 9. Horizontal thrust pull rod; 10. Front longitudinal thrust pull rod; 11. Lower thrust rod support; 12. Balanced suspension assembly; 121. Bearing hub; 13. Rear suspension lower longitudinal thrust pull rod; 14. Rear suspension upper longitudinal thrust pull rod; 15. Leaf spring support; 16. Wear plate; 17. Axle end support; 18. Beam end support; 19. Leaf spring limit support.

[0043] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0045] In the description of the present application, it should be noted that the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “inner”, “outer” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] ​​​​In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium.

[0047] As Figure 1 Indicated, a suspension system, including front suspension and rear suspension;The front suspension is the arrangement form of oil gas spring, including front axle oil gas cylinder 7, front suspension pull rod support assembly 6, lower portal frame 8, horizontal thrust pull rod 9 and front longitudinal thrust pull rod 10;The rear suspension is the arrangement form of steel plate spring, including bridge end support 17, beam end support 18, rear suspension upper longitudinal thrust pull rod 14, plate spring seat 15, rear suspension steel plate spring assembly 5, balance suspension assembly 12, lower thrust rod seat 11 and rear suspension lower longitudinal thrust pull rod 13.The utility model effectively transmits force and moment to frame and vehicle body, improves the impact resistance of front suspension and the overall strength of rear suspension.

[0048] The structure of the above-mentioned front suspension is further described below.

[0049] As Figure 2 Indicated, lower portal frame 8, front suspension pull rod support assembly 6 are fixed on longitudinal beam 1 by bolt connection.Specifically: the cylinder of front axle oil gas cylinder 7 is rotatably connected with longitudinal beam 1 by pin shaft, the rod part of front axle oil gas cylinder 7 is rotatably connected with front axle 2 by pin shaft.Lower portal frame 8 and front axle 2 are rotatably pinned through horizontal thrust pull rod 9, specifically: lower portal frame 8 and one end of horizontal thrust pull rod 9 are rotatably connected through pin shaft, front axle 2 and the other end of horizontal thrust pull rod 9 are rotatably connected through pin shaft.Front suspension pull rod support assembly 6 and front axle 2 are rotatably pinned through front longitudinal thrust pull rod 10, specifically: front suspension pull rod support assembly 6 and four end parts of front longitudinal thrust pull rod 10 are connected, one end of front longitudinal thrust pull rod 10 is connected on front suspension pull rod support assembly 6, front axle 2 and four end parts of front longitudinal pull rod support assembly 6 are also connected, the other end of front longitudinal thrust pull rod 10 is connected on front axle 2.

[0050] Through the above-mentioned arrangement of front suspension, the force and moment of the wheel are transmitted to the frame and the vehicle body, and the vibration and impact from the road are absorbed and mitigated, which is beneficial to increase the comfort of the driver and make the vehicle have good driving smoothness. The oil gas suspension also plays the role of spring and shock absorber, which saves the setting of traditional spring and leaf spring, solves the phenomenon of front leaf spring suspension rupture under heavy load and downhill road conditions, and improves the impact resistance of front axle.

[0051] The rear suspension structure is further described as follows.

[0052] As shown in Figure 3 , Figure 4 , Figure 5 , the balance suspension assembly 12 and the beam end support 18 are fixed on the longitudinal beam by bolt connection; the bridge end support 17, the leaf spring seat 15 and the lower thrust rod seat 11 are fixed on the middle bridge 3 and the rear bridge 4 by bolt connection, the leaf spring limiting seat 19 is fixed on the leaf spring seat 15 by bolt; the rear suspension leaf spring assembly 5 is installed between the longitudinal beam 1 and the wear plate 16, and the wear plate 16 is bolted on the longitudinal beam 1.

[0053] Further, as shown in Figure 3 , Figure 4 , Figure 5 , the middle bridge 3 and the rear bridge 4 are both installed with the leaf spring seat 15, and the rear suspension leaf spring assembly 5 is installed between the two leaf spring seats 15 on the same side, and the rear suspension leaf spring assembly 5 is gap-fitted between the leaf spring seat 15, so that the rear suspension leaf spring assembly 5 can slide in the leaf spring seat 15. The rear suspension leaf spring assembly 5 is composed of a plurality of leaf springs of the same length stacked up and down at the bottom and a plurality of leaf springs with gradually decreasing lengths stacked up and down at the middle and upper parts, and the balance suspension assembly 12 is bolted with the bearing hub 121 at both ends, and the rear suspension leaf spring assembly 5 is fixed with the bearing hub 121 by U-shaped bolts.

[0054] Through the above-mentioned leaf spring arrangement, the rear suspension leaf spring assembly 5 realizes the up-and-down swing of the front and rear ends through the rotation of the bearing hub 121, and follows the middle bridge 3 and the rear bridge 4 to adapt to the road conditions, and shares the load together. When the middle bridge 3 is raised and the rear bridge 4 is depressed, the middle bridge 3 drives the front end of the rear suspension leaf spring assembly 5 to move upward, the middle of the leaf spring rotates around the bearing hub 121, and the rear bridge 4 drives the rear end of the leaf spring to move downward, and the front double bridges act together to share the load. When the middle bridge 3 is depressed and the rear bridge 4 is raised, the whole system moves reversely, and the effect of the front double bridges sharing the load together can also be achieved.

[0055] Further, as shown in Figure 3 , Figure 4 , Figure 5As shown, the middle axle 3 and the upper end of the rear axle 4 are respectively provided with axle end supports 17, which are fixed to the axle through studs, and the two sides of the longitudinal beam 1 are respectively provided with beam end supports 18, which are fixed to the longitudinal beam 1 through bolts. The axle end supports 17 and the beam end supports 18 are rotatably pinned through the rear upper longitudinal thrust rod 14, and are arranged in a V-shaped manner, so that one end of the four rods is connected to the axle end support 17 through a pin shaft and is fixed in position through a bolt, and the other end of the rod is connected to the beam end support 18 through a pin shaft and is fixed in position through a bolt. The lower thrust rod seat 11 and the balance suspension assembly 12 are rotatably pinned through the rear lower longitudinal thrust rod 13, one end of the four rods is connected to the lower thrust rod seat 11 through a pin shaft and is fixed in position through a bolt, and the other end of the rod is fixed to the balance suspension assembly through a pin shaft.

[0056] Through the above-mentioned rear suspension system arrangement, the forces and torques in various directions can be transmitted, and the wheel bounce trajectory is determined, and the advantages of simple structure, high reliability, convenient maintenance, and cost reduction are achieved. This leaf spring structure not only has the function of an elastic element, but also is a guide device. The number of leaf spring pieces is reduced while the thickness of the leaf spring is increased, the motion noise is reduced, the lightweight design concept is embodied, and the driving smoothness and driving comfort of the vehicle are improved.

[0057] In summary, the non-road wide-body dump truck arranged with the front oil gas spring and the rear steel plate spring can provide a larger tonnage load, has higher transportation efficiency under the same traffic density, greatly reduces the safety hazards caused by excessive traffic density, relieves the tension of driver personnel, improves efficiency, reduces transportation cost, and has more significant economic benefits.

[0058] The chassis provided by the utility model is described below, and the chassis described below can be correspondingly referred to the suspension system described above.

[0059] The chassis provided by the utility model comprises a front axle, a middle axle, a rear axle, a vehicle frame and the suspension system described above; the vehicle frame is composed of two longitudinal beams arranged side by side at a predetermined interval in the same plane and a cross beam fixedly connected with the two longitudinal beams; and the suspension system is used for connecting the vehicle frame, the front axle, the middle axle and the rear axle together.

[0060] The chassis provided by the utility model has the same beneficial effects as the suspension system provided by the utility model, and thus will not be described here.

[0061] The dump truck provided by the utility model is described below, and the chassis described below can be correspondingly referred to the chassis described above.

[0062] The dump truck provided by the utility model can comprise the chassis described in any one of the above embodiments.

[0063] The beneficial effects achieved by the self-unloading vehicle are consistent with the beneficial effects achieved by the chassis provided by the utility model, and thus will not be repeated here.

[0064] It should be noted that the self-unloading vehicle can be a mine-used non-road wide-body self-unloading vehicle.

[0065] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0066] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments but not others, combinations of features of different embodiments are also meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.

[0067] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with the preferred embodiment, it is not intended to limit the utility model. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the utility model, and make equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model are still within the scope of the utility model.

Claims

1. A suspension system characterized by, The suspension system comprises a front suspension and a rear suspension; the front suspension is arranged in the form of an oil-gas spring; the rear suspension is arranged in the form of a steel plate spring, comprising: bridge end supports, respectively fixedly connected to the top surfaces of the middle bridge and the rear bridge between the two longitudinal beams of the frame; beam end supports, respectively fixedly connected to the inner surfaces of the two longitudinal beams of the frame; rear suspension upper longitudinal thrust rods, hingedly connected between the bridge end supports and the beam end supports; plate spring seats, respectively fixed to the top surfaces of the middle bridge and the rear bridge at the outer surfaces of the two longitudinal beams of the frame; rear suspension steel plate spring assemblies, respectively installed in the two plate spring seats on the same side of the middle bridge and the rear bridge; a balance suspension assembly, fixedly connected to the two longitudinal beams of the frame, and two bearing hubs are respectively fixedly connected to the two ends of the balance suspension assembly, and the bearing hubs are further fixedly connected to the rear suspension steel plate spring assemblies above the bearing hubs; lower thrust rod seats, respectively fixed to the bottom surfaces of the middle bridge and the rear bridge at the outer surfaces of the two longitudinal beams of the frame; rear suspension lower longitudinal thrust rods, hingedly connected between the lower thrust rod seats and the balance suspension assembly.

2. The suspension system according to claim 1, wherein: the number of the rear suspension lower longitudinal thrust rods is four, two of which are respectively hingedly connected between the two lower thrust rod seats on the middle bridge and the balance suspension assembly, and the other two of which are respectively hingedly connected between the two lower thrust rod seats on the rear bridge and the balance suspension assembly.

3. The suspension system according to claim 1, wherein: the number of the rear suspension upper longitudinal thrust rods is four, two of which are respectively hingedly connected between the two beam end supports and the bridge end support on the middle bridge, and the other two of which are respectively hingedly connected between the two beam end supports and the bridge end support on the rear bridge.

4. The suspension system according to claim 1, wherein: two wear-resistant plates are fixed to the outer surfaces of the longitudinal beams of the frame in the areas facing the rear suspension steel plate spring assemblies.

5. The suspension system according to claim 1, wherein: the front end of the rear suspension steel plate spring assembly is inserted into the plate spring seat on the middle bridge, the rear end of the rear suspension steel plate spring assembly is inserted into the plate spring seat on the rear bridge, and the rear suspension steel plate spring assembly and the plate spring seat are gap-fitted, so that the rear suspension steel plate spring assembly can slide in the plate spring seat.

6. The suspension system according to claim 1, wherein: the rear suspension steel plate spring assembly is formed by stacking a plurality of bottom leaf springs with the same length and a plurality of middle and upper leaf springs with gradually decreasing lengths.

7. A suspension system according to claim 1, wherein The front suspension comprises: a front bridge oil-gas cylinder, the top of which is hingedly connected to the oil cylinder support of the longitudinal beam of the frame, and the bottom of which is hingedly connected to the front bridge; a front suspension rod support assembly, fixedly connected to the longitudinal beam of the frame; a transverse thrust rod, one end of which is hingedly connected to the lower portal frame fixed to the frame, and the other end of which is hingedly connected to the front bridge; a front longitudinal thrust rod, hingedly connected between the front suspension rod support assembly and the front bridge.

8. The suspension system according to claim 7, wherein: The number of the front longitudinal thrust tie rods is four, two of which are hingedly connected between the front axle and one side end of the front suspension tie rod support assembly in a manner of being arranged in an upper and lower interval, and the other two of which are hingedly connected between the front axle and the other side end of the front suspension tie rod support assembly in a manner of being arranged in an upper and lower interval.

9. A chassis characterized by, Comprise: a front axle, a middle axle and a rear axle; a frame composed of two longitudinal beams arranged side by side in a same plane at a predetermined interval and a cross beam fixedly connected with the two longitudinal beams; The suspension system of any one of claims 1 to 8 is used to connect the frame with the front axle, the middle axle and the rear axle together.

10. A self-unloading truck characterized in that: comprise the suspension system of any one of claims 1 to 8; or, comprise the chassis of claim 9.

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