Off-highway front oil gas O-shaped stabilizing beam structure

Abstract

The off-highway front oil gas O-shaped stabilizing beam structure comprises oil gas cylinder supports on the two sides of a vehicle frame and an oil gas cylinder with the upper end hinged to the oil gas cylinder supports and the lower end hinged to the corresponding end of a front axle, and the upper end faces of the two oil gas cylinder supports are fixed to a cab rear suspension and a platform rear suspension in a bolted mode respectively. The two lower ends of the upper stabilizing beam are fixedly connected with the inner end face of the cab rear suspension and the inner end face of the platform rear suspension in a horizontal bolting mode respectively, a lower transverse pushing beam located between the two oil-gas cylinder supports is arranged above the front axle, and the two ends of the lower transverse pushing beam are fixedly connected with the oil-gas cylinder supports in a bolting mode respectively. The upper stabilizing beam, the lower transverse pushing beam and the oil and gas cylinder supports on the two sides form an O-shaped beam with high bending rigidity and torsional strength. According to the utility model, the problems of poor bending rigidity and torsional rigidity of the front ends of the existing flexible frame and rigid frame are solved, the bending rigidity and torsional rigidity of the front ends of the flexible frame and rigid frame are improved, the adverse effect of larger torsional deformation of the front ends of the frames on the suspension is avoided, the safety is reliable, weld cracking is avoided, and batch production is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of off-road chassis, and in particular relates to an off-road front oil and gas O-shaped stabilizing beam structure. Background Art

[0002] With the country's increasing demands for safer, more digital, and more intelligent mining areas, the demand for wide-body mining vehicles with higher intelligence and payload capacity is also gradually increasing. Currently, small-tonnage wide-body vehicles are modified from traditional engineering dump trucks, featuring a wide-body cab and leaf spring front suspension. This combined structure is C-shaped, with poor torsional resistance, and fails to improve the bending and torsional stiffness of the flexible frame at the front axle. Especially when turning and driving on uneven and salty surfaces, the left and right wheels become misaligned, causing significant distortion at the front end of the flexible frame, impacting the overall vehicle's usability. With the increasing number of large-tonnage mining vehicles, the significant distortion at the front end of both the flexible and rigid frames urgently needs to be addressed. Utility Model Content

[0003] The technical problem solved by the utility model is: to provide an off-road front oil and gas O-shaped stabilizing beam structure, which adopts an O-shaped beam with a stable combined structure formed by an upper stabilizing beam, a lower horizontal push beam and oil and gas cylinder supports on both sides, solves the problem of poor bending stiffness and torsional stiffness of the front ends of the existing flexible frame and rigid frame, improves the bending stiffness and torsional stiffness of the front ends of the flexible frame and rigid frame, avoids the adverse effect of large torsional deformation of the front end of the frame on the suspension, has a reasonable design, a simple structure, is easy to assemble and disassemble, is safe and reliable, prevents weld cracking, and is mass-produced with guaranteed quality.

[0004] The technical solution adopted by the present invention is: an off-road front oil and gas O-shaped stabilizer beam structure, including oil and gas cylinder supports bolted to both sides of the vehicle frame, an oil and gas cylinder whose upper end is hinged to the oil and gas cylinder supports and whose lower end is hinged to the corresponding end of the front axle, the upper end faces of the two oil and gas cylinder supports are bolted to the rear suspension of the cab and the rear suspension of the platform respectively, and the two lower ends of the upper stabilizer beam are horizontally bolted to the inner end faces of the rear suspension of the cab and the rear suspension of the platform respectively, a lower cross push beam is provided above the front axle between the two oil and gas cylinder supports, and the two ends of the lower cross push beam are bolted to the oil and gas cylinder supports respectively, the upper stabilizer beam, the lower cross push beam and the oil and gas cylinder supports on both sides form an O-shaped beam with high bending stiffness and torsional strength.

[0005] Among them, the upper stabilizing beam includes a left support beam, a right support beam and a connecting channel steel. The left support beam is a Z-shaped bending structure, and the right support beam is an L-shaped bending structure with a hypotenuse at the corner position. The end of the upper vertical section of the left support beam is bolted to the end of the horizontal section of the right support beam, and the lower vertical section of the left support beam and the vertical section of the right support beam are respectively fixed to the inner end faces of the rear suspension of the room and the rear suspension of the platform through bolts. The end of the horizontal section of the right support beam is fixed with a connecting channel steel for connecting to the upper engine hood.

[0006] Furthermore, the connecting channel steel is set with its opening facing downward, and vertical waist-shaped holes are made on the vertical side plate surfaces on both sides of the connecting channel steel, and horizontal waist-shaped holes corresponding to the positions of the vertical waist-shaped holes on the connecting channel steel are made on both side walls of the horizontal section end of the side support beam. The connecting channel steel is fixed to the side support beam in an adjustable horizontal and height position by bolts passing through the horizontal waist-shaped holes and the vertical waist-shaped holes.

[0007] Furthermore, the platform rear suspension includes a channel steel with the notch facing downward, a pad evenly distributed on the upper end surface of the channel steel, an L-shaped plate with the horizontal plate facing downward and the vertical plate facing upward and fixed to the end of the channel steel, and the vertical plate and horizontal plate of the L-shaped plate are both fixed with ribs fixedly connected to the end of the channel steel, and the vertical plate and horizontal plate of the L-shaped plate are respectively fixedly connected to the lower end of the vertical section of the upper stabilizing beam and the upper end of the oil and gas cylinder support by bolts.

[0008] Furthermore, the oil and gas cylinder support is a groove-type seat with a groove facing outward, which is composed of a vertical plate and side plates fixed on the two vertical edges of the vertical plate, and the oil and gas cylinder is located between the two side plates of the oil and gas cylinder support. The ear shaft hole at the upper end of the oil and gas cylinder corresponds to the position of the pin hole on the upper ends of the two side plates of the oil and gas cylinder support, and the upper end of the oil and gas cylinder and the oil and gas cylinder support are hinged by a pin shaft that matches the ear shaft hole and the pin hole. The upper end surface of the front axle is symmetrically fixed with a U-shaped connecting seat, and the pin shaft that matches the ear shaft hole at the lower end of the oil and gas cylinder and the pin hole on the U-shaped connecting seat hinges the lower end of the oil and gas cylinder to the front axle.

[0009] The advantages of this utility model compared with the prior art are:

[0010] 1. This technical solution adopts an O-shaped beam with a stable combined structure formed by an upper stabilizing beam, a lower transverse push beam, and oil and gas cylinder supports on both sides. This solves the problem of poor bending and torsional stiffness at the front end of the existing flexible frame and rigid frame, improves the bending and torsional stiffness of the front end of the flexible frame and rigid frame, and avoids the adverse effects of large torsional deformation of the front end of the frame on the suspension.

[0011] 2. This technical solution uses an upper stabilizing beam formed by bolting the left and right support beams and connecting channel steel. This provides ample space for engine maintenance and increases the distance from the inside of the cab, eliminating interference caused by the up and down bouncing of the cab's rubber shock-absorbing pads, which affects the cab's shock-absorbing effect. Secondly, it reduces the difficulty of parts processing and welding deformation, and avoids installation problems due to excessive dimensions. Finally, the upper part of the upper stabilizing beam is equipped with a connecting channel steel with adjustable height and horizontal position, which is used to adjust the horizontal flatness of the middle engine hood, avoiding the phenomenon of tilting and being unable to adjust, which affects the appearance.

[0012] 3. This technical solution horizontally bolts the detachable upper stabilizing beam to the platform rear suspension and cab rear suspension on both sides. Compared with the current vertical bolting structure, it effectively eliminates the quality problem of vertical bolt shearing and extends the service life of the bolts.

[0013] 4. This technical solution uses a platform rear suspension welded with channel steel, pads, and L-shaped plates to reduce the adverse effects of weld cracking and large welding deformation caused by multiple weld seams on steel plates. It also improves the overall bending resistance, ensures product consistency, and is not affected by the procurement cycle. The platform rear suspension can also be replaced with castings to improve processing accuracy and consistency.

[0014] 5. This technical solution has reasonable design, simple structure, easy assembly and disassembly, reliable safety, and eliminates weld cracking. It is mass-produced and has guaranteed quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the upper stabilizing beam structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the rear suspension structure of the platform of the utility model;

[0018] Figure 4 It is a schematic diagram of the stress state under special working conditions of the utility model. DETAILED DESCRIPTION

[0019] The following is a combination of the embodiments of the present invention Figure 1-4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0020] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0022] Off-road front oil and gas O-type stabilizing beam structure, such as Figure 1 As shown, it includes a cylinder support 3 bolted to both sides of the frame, a cylinder 2 whose upper end is hinged to the cylinder support 3 and whose lower end is hinged to the corresponding end of the front axle 1, the upper end faces of the two cylinder supports 3 are bolted to the cab rear suspension 4 and the platform rear suspension 6 respectively, and the two lower ends of the upper stabilizing beam 5 are horizontally bolted to the inner end faces of the cab rear suspension 4 and the platform rear suspension 6 respectively, and a lower horizontal push beam 7 is provided above the front axle 1 between the two cylinder supports 3, and the two ends of the lower horizontal push beam 7 are bolted to the cylinder support 3 respectively, the upper stabilizing beam 5, the lower horizontal push beam 7 The beam 7 and the oil and gas cylinder supports 3 on both sides form an O-shaped beam with high bending stiffness and torsional strength. In the above structure, the O-shaped beam with a stable combined structure formed by the upper stabilizing beam 5, the lower cross-pushing beam 7 and the oil and gas cylinder supports 3 on both sides solves the problem of poor bending stiffness and torsional stiffness of the front ends of the existing flexible frame and the rigid frame. The O-shaped beam structure has good bending and torsional resistance, improves the bending stiffness and torsional stiffness of the front ends of the flexible frame and the rigid frame, and avoids the adverse effects of large torsional deformation of the front end of the frame on the suspension. All parts are connected by bolts for easy assembly.

[0023] like Figure 2As shown, the specific structure of the upper stabilizing beam 5 is as follows: the upper stabilizing beam 5 includes a left side support beam 10, a right side support beam 8 and a connecting channel steel 9, the left side support beam 10 is a Z-shaped bending structure, and the right side support beam 8 is an L-shaped bending structure with a bevel at the corner position, the upper vertical section end of the left support beam 10 is bolted to the horizontal section end of the right support beam 8, and the lower vertical section of the left support beam 10 and the vertical section of the right support beam 8 are respectively fixed to the rear suspension 4 and the inner end surface 3 of the platform rear suspension 6 by bolts, and the end of the horizontal section of the right support beam 8 is fixed with a connecting channel steel 9 for connecting to the upper engine hood; wherein, the connecting channel steel 9 is set with an opening facing downward, and vertical waist-shaped holes are formed on the vertical side plates on both sides of the connecting channel steel 9, and horizontal waist-shaped holes corresponding to the positions of the vertical waist-shaped holes on the connecting channel steel 9 are formed on both side walls of the horizontal section end of the side support beam 8, and the connecting channel steel 9 is horizontally and height-positioned by bolts passing through the horizontal waist-shaped holes and the vertical waist-shaped holes. The upper stabilizing beam 5 is fixed to the side support beam 8 in an adjustable manner, which is convenient for adjusting the height and reducing the height unevenness caused by the cumulative error of assembly. In the above structure, the upper stabilizing beam 5 formed by bolting the left support beam 10, the right support beam 8 and the connecting channel steel 9 provides a large space for engine maintenance. At the same time, it increases the distance from the inner side of the cab, and eliminates the interference caused by the up and down bouncing of the rubber shock-absorbing pad of the cab, which affects the shock-absorbing effect of the cab. Secondly, it reduces the processing difficulty and welding deformation of parts, and will not be unable to be installed due to excessive size. Finally, because the upper part of the upper stabilizing beam 5 is provided with a connecting channel steel 9 with adjustable height and horizontal position, it is used to adjust the horizontal flatness of the middle engine hood to avoid the phenomenon of tilting that cannot be adjusted, which affects the appearance. The detachable upper stabilizing beam 5 is horizontally bolted to the platform rear suspension 6 and the cab rear suspension 4 on both sides. Compared with the current vertical bolting structure, it effectively eliminates the quality problem of vertical bolt shearing and extends the service life of the bolts.

[0024] like Figure 3 As shown, the specific structure of the platform rear suspension 6 is as follows: the platform rear suspension 6 includes a channel steel 6-1 with a notch facing downward, a pad 6-2 evenly distributed on the upper end surface of the channel steel 6-1, an L-shaped plate 6-4 with a horizontal plate facing downward and a vertical plate facing upward and fixed to the end of the channel steel 6-1, the vertical plate and the horizontal plate of the L-shaped plate 6-4 are fixed with a rib plate 6-3 fixedly connected to the end of the channel steel 6-1, and the vertical plate and the horizontal plate of the L-shaped plate 6-4 are fixedly connected to the lower end of the vertical section of the upper stabilizing beam 5 and the upper end of the oil and gas cylinder support 3 by bolts respectively; the channel steel 6-1 and the L-shaped plate 6-4 are bent parts, and the platform rear suspension is welded with the channel steel 6-1, the pad 6-2 and the L-shaped plate 6-4, which reduces the adverse effects of the large number of welds on the steel plates that are prone to open welding and large welding deformation, and also improves the overall bending resistance, ensures product consistency, and is not affected by the procurement cycle. The platform rear suspension 6 can also be replaced by castings to improve processing accuracy and consistency;

[0025] The specific connection structure of the oil and gas cylinder 2, the oil and gas cylinder support 3 and the front axle 1 is as follows: the oil and gas cylinder support 3 is a groove-type seat composed of a vertical plate and side plates fixed on the two vertical edges of the vertical plate, and the oil and gas cylinder 2 is located between the two side plates of the oil and gas cylinder support 3. The ear shaft hole at the upper end of the oil and gas cylinder 2 corresponds to the position of the pin hole on the upper ends of the two side plates of the oil and gas cylinder support 3, and the upper end of the oil and gas cylinder 2 and the oil and gas cylinder support 3 are hinged by a pin shaft that matches the ear shaft hole and the pin hole. The upper end surface of the front axle 1 is symmetrically fixed with a U-shaped connecting seat 11, and the pin shaft that matches the ear shaft hole at the lower end of the oil and gas cylinder 2 and the pin hole on the U-shaped connecting seat 11 hinges the lower end of the oil and gas cylinder 2 to the front axle 1.

[0026] like Figure 4 As shown in the figure, when a heavily loaded vehicle travels on an uneven road with a slope of α°, the line connecting the trunnions of the oil and gas cylinders 2 on both sides forms angles β1 and β2 with the Z-axis reference plane of the frame, β1≠β2, forming an unequal triangle shape, H1≠H2, and presenting a four-bar linkage. When one side of the wheel is excited by the ground, it will affect the other side, and the angle on one side will increase while the angle on the other side will decrease. At this time, the road reaction force transmitted by the oil and gas spring will force the frame to torsion deformation, and the frame longitudinal beam will tend to displace after being subjected to force in the horizontal direction. When the car turns, The centrifugal force will also cause the longitudinal beam to twist and skew; the above two working conditions will generate shear force on the bolts at the upper end perpendicular to the horizontal direction, and the bolts are easy to break; therefore, on the basis of this improved structure, the lower end of the oil and gas cylinder support 3 and the corresponding side of the lower horizontal push beam 7 are connected by horizontal bolts, and the direction of the bolts is consistent with the force direction. When subjected to a certain horizontal tensile force, the force is not enough to cause the lower horizontal push beam 7 to deform, so horizontal bolts are used to connect the two side surfaces of the upper stabilizing beam 5. The above connection structure effectively eliminates the quality problem of the bolts of the two being sheared off.

[0027] This technical solution has reasonable design, simple structure, easy assembly and disassembly, reliable safety, eliminates weld cracking, and is mass-produced with guaranteed quality.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Off-road front oil and gas O-shaped stabilizing beam structure, characterized by: The invention comprises a cylinder support (3) bolted to both sides of the vehicle frame, and a cylinder (2) whose upper end is hinged to the cylinder support (3) and whose lower end is hinged to the corresponding end of the front axle (1); the upper end faces of the two cylinder supports (3) are bolted to the rear suspension (4) of the cab and the rear suspension (6) of the platform respectively, and the two lower ends of the upper stabilizing beam (5) are horizontally bolted to the inner end faces of the rear suspension (4) of the cab and the rear suspension (6) of the platform respectively; a lower horizontal push beam (7) located between the two cylinder supports (3) is provided above the front axle (1), and the two ends of the lower horizontal push beam (7) are bolted to the cylinder support (3) respectively; the upper stabilizing beam (5), the lower horizontal push beam (7) and the cylinder supports (3) on both sides form an O-shaped beam with high bending stiffness and torsional strength; The upper stabilizing beam (5) includes a left support beam (10), a right support beam (8) and a connecting channel steel (9), wherein the left support beam (10) is a Z-shaped bending structure, and the right support beam (8) is an L-shaped bending structure with a beveled corner. The end of the upper vertical section of the left support beam (10) is bolted to the end of the horizontal section of the right support beam (8), and the lower vertical section of the left support beam (10) and the vertical section of the right support beam (8) are respectively fixed to the inner end faces of the rear suspension (4) and the platform rear suspension (6) by bolts, and the end of the horizontal section of the right support beam (8) is fixed with a connecting channel steel (9) for connecting to the upper engine hood.

2. The off-road front oil and gas O-shaped stabilizer beam structure according to claim 1, characterized in that: The connecting channel steel (9) is opened downward, and vertical waist-shaped holes are formed on the vertical side plate surfaces on both sides of the connecting channel steel (9), and horizontal waist-shaped holes corresponding to the positions of the vertical waist-shaped holes on the connecting channel steel (9) are formed on both side walls of the horizontal section end of the side support beam (8). The connecting channel steel (9) is fixed to the side support beam (8) in an adjustable horizontal position and height position by bolts passing through the horizontal waist-shaped holes and the vertical waist-shaped holes.

3. The off-road front oil and gas O-shaped stabilizer beam structure according to claim 1, characterized in that: The platform rear suspension (6) comprises a channel steel (6-1) with a notch facing downward, a pad (6-2) evenly distributed on the upper end surface of the channel steel (6-1), and an L-shaped plate (6-4) with a horizontal plate facing downward and a vertical plate facing upward and fixed to the end of the channel steel (6-1). The vertical plate and the horizontal plate of the L-shaped plate (6-4) are both fixed with a rib plate (6-3) fixedly connected to the end of the channel steel (6-1). The vertical plate and the horizontal plate of the L-shaped plate (6-4) are respectively fixedly connected to the lower end of the vertical section of the upper stabilizing beam (5) and the upper end of the oil and gas cylinder support (3) by bolts.

4. The off-road front oil and gas O-shaped stabilizer beam structure according to any one of claims 1 to 3, characterized in that: The oil and gas cylinder support (3) is a slot-shaped seat with a slot facing outwards, which is composed of a vertical plate and side plates fixed at two vertical edges of the vertical plate, and the oil and gas cylinder (2) is located between the two side plates of the oil and gas cylinder support (3). The ear shaft hole at the upper end of the oil and gas cylinder (2) corresponds to the position of the pin holes on the upper ends of the two side plates of the oil and gas cylinder support (3), and the upper end of the oil and gas cylinder (2) and the oil and gas cylinder support (3) are hinged by a pin shaft that matches the ear shaft hole and the pin hole. The upper end of the front axle (1) is symmetrically fixed with a U-shaped connecting seat (11), and the pin shaft that matches the ear shaft hole at the lower end of the oil and gas cylinder (2) and the pin hole on the U-shaped connecting seat (11) hinges the lower end of the oil and gas cylinder (2) to the front axle (1).

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