Pull rod seat assembly, frame and mining dump truck

Abstract

The invention discloses a pull rod seat assembly, a frame and a mining dump truck. The pull rod seat assembly comprises a left pull rod seat, a right pull rod seat and a connecting seat, the left pull rod seat and the right pull rod seat are respectively and fixedly connected with two longitudinal beams which are arranged side by side at an interval on the frame; the upper areas of the left pull rod seat and the right pull rod seat are each provided with two hinge points a, one hinge point a is used for being connected with a front suspension pull rod on the upper portion, and the other hinge point a is used for being connected with a rear suspension pull rod on the upper portion; the lower area of the left pull rod seat and the lower area of the right pull rod seat are each provided with two hinge points b, one hinge point b is used for being connected with a front suspension pull rod on the lower portion, and the other hinge point b is used for being connected with a rear suspension pull rod on the lower portion; the two end areas of the connecting base in the length direction are in lap joint with the lower areas of the left pull rod base and the right pull rod base respectively. The hinge pin is connected with a plurality of suspension pull rods and used for bearing loads of the suspension pull rods, so that the overall torsional rigidity of a frame is improved, and the service life of the frame is prolonged.

Description

Technical Field

[0001] The invention relates to a drawbar seat assembly and belongs to the technical field of mining dump trucks. Background Art

[0002] The rear axle of current mining dump trucks generally adopts multi-link suspension, that is, multiple tie rods connect the axle and the frame, and the tie rods are connected to the frame and the axle using joint bearings and pins. A single plate or box-shaped hole seat is designed on one side of the frame to fix the tie rod pin. Due to the poor quality of mining roads, multiple tie rods cannot be stressed at the same time, which easily leads to excessive stress on a single tie rod and its connection position, causing cracks in the frame structure. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a tie rod seat assembly, which uses an integrated sleeve seat reinforcement structure in locations where the structural space is abundant, and adopts a plate plus perforated sleeve seat structure in areas where the space is compact and the rigidity is sufficient, thereby greatly improving the impact resistance of the structure and increasing the fatigue life of the structure.

[0004] The present invention is implemented according to the following technical solutions: In a first aspect, the present invention provides a tie rod seat assembly, comprising: The left tie rod seat and the right tie rod seat are respectively fixedly connected to two longitudinal beams arranged side by side at intervals on the frame; the upper regions of the left tie rod seat and the right tie rod seat are each provided with two hinge points a, one of which is used to connect the upper front suspension tie rod, and the other hinge point a is used to connect the upper rear suspension tie rod; the lower regions of the left tie rod seat and the right tie rod seat are each provided with two hinge points b, one of which is used to connect the lower front suspension tie rod, and the other hinge point b is used to connect the lower rear suspension tie rod; The connecting seat has two end regions along its length direction respectively overlapped with the lower regions of the left tie rod seat and the right tie rod seat; Wherein, the left tie rod seat comprises: The outer vertical plate and the inner vertical plate are arranged opposite to each other on the left and right, the inner vertical plate is higher than the outer vertical plate, the inner vertical plate is welded to the inner side surface of the longitudinal beam at a position higher than the outer vertical plate, and the top surface of the outer vertical plate is welded to the bottom surface of the longitudinal beam; A pair of support plates arranged front and back oppositely are respectively welded at the front and rear edges between the outer vertical plate and the inner vertical plate, and the support plates are bent at the same height as the inner vertical plate to form a horizontal welding surface welded to the bottom surface of the longitudinal beam; Two integral shaft sleeve seats are arranged side by side in front and back at a predetermined interval and penetrate the upper area of ​​the outer vertical plate and the inner vertical plate to form the two hinge points a; Four single-sided bushing seats, two of which are arranged side by side front and back at a predetermined interval in the lower region of the outer vertical plate, and the other two single-sided bushing seats are arranged side by side front and back at a predetermined interval in the lower region of the inner vertical plate; the two front single-sided bushing seats are coaxially arranged to form one of the hinge points b, and the two rear single-sided bushing seats are coaxially arranged to form one of the hinge points b.

[0005] In some embodiments, the left tie rod seat and the right tie rod seat are mirror structures and are welded to the corresponding longitudinal beams; after welding, the left tie rod seat and the right tie rod seat form a box-shaped structure with the bottom surface of the corresponding longitudinal beam and the top surface of the connecting seat respectively.

[0006] In some embodiments, the integral bushing seat is a three-piece welded structure, including: A support pipe, located between the outer vertical plate and the inner vertical plate, the support pipe is coaxially arranged with the hinge holes on the outer vertical plate and the inner vertical plate, and the outer diameter of the support pipe is the same as the inner diameter of the hinge holes on both sides; An inner bushing seat, whose outer diameter is the same as the outer diameter of the support pipe, is convenient for embedding into the hinge hole on the inner vertical plate, and there is no fixed connection between the two; An outer bushing seat, which is embedded in the support pipe, and there is a step on the outer bushing seat that protrudes from the outer edge of the support pipe, and the step contacts the outer surface of the outer vertical plate and serves as the welding positioning surface of the integral bushing seat and the outer vertical plate; a pin shaft hole is provided coaxially at the centers of the outer bushing seat and the inner bushing seat.

[0007] In some embodiments, a notch for avoiding the suspension tie rod is provided in the middle region of the radial peripheral surface of the support pipe, and welding grooves are provided at both axial ends of the support pipe for welding with the inner bushing seat and the outer bushing seat; a window is provided on the support plate opposite to the notch, and the joint of the suspension tie rod passes through the window and the notch in sequence and then enters the support pipe, and the joint of the suspension tie rod is hinged to the integral bushing seat through a through pin shaft; a sink is provided on the outer surface of the outer bushing seat, and a threaded seat is welded in the sink, and the threaded seat is used in cooperation with a bolt to fix the pin shaft.

[0008] In some embodiments, the single-sided bushing seat is a casting, which is respectively embedded into the hinge holes of the inner vertical plate and the outer vertical plate, and a step protruding from the hinge hole is provided at the outer edge of the single-sided bushing seat, and the step fits and positions with the outer surfaces of the inner vertical plate and the outer vertical plate; a pin shaft hole is provided coaxially at the centers of the two front single-sided bushing seats and the two rear single-sided bushing seats.

[0009] In some embodiments, the gap between two relatively arranged single-sided bushing seats is not less than the joint width of the suspension tie rod. The support plate and the connecting seat do not contact each other, thereby leaving a window arranged opposite to the gap. After the joint of the suspension tie rod passes through the window, it enters the gap, and the joint of the suspension tie rod is hinged to the single-sided bushing seats on both sides through a through pin shaft. Threaded seats are welded on the outer surfaces of the inner vertical plate and the outer vertical plate near the single-sided bushing seats, and the threaded seats are used in cooperation with bolts to fix the pin shaft.

[0010] In some embodiments, reinforcing plates for reducing the internal cantilever length of the single-sided bushing seats are welded on the inner surfaces of the outer vertical plate and the inner vertical plate. Two through holes are provided on the reinforcing plates, and one through hole corresponds to one single-sided bushing seat. Grooves for welding together with the single-sided bushing seats are provided around the through holes.

[0011] In some embodiments, an inner rib plate assembly extending from top to bottom is provided in the middle regions of the outer vertical plate and the inner vertical plate. The inner rib plate assembly includes: A circular tube, the axial end faces on both sides of which are respectively welded to the inner surfaces of the corresponding outer vertical plate and inner vertical plate; or, the axial ends on both sides of which penetrate through the outer vertical plate and the inner vertical plate and are then welded together; An upper flat plate, which is welded to the radial peripheral surface of the circular tube, the inner surfaces of the outer vertical plate and the inner vertical plate; A lower flat plate, which is welded to the radial peripheral surface of the circular tube, the inner surfaces of the outer vertical plate and the inner vertical plate.

[0012] In some embodiments, the front end and the rear end of the outer vertical plate and the inner vertical plate at the part connected to the longitudinal beam both horizontally extend outwards to form protrusions to increase the connection width with the longitudinal beam. A plurality of welding holes for increasing the welding strength with the longitudinal beam are provided on the inner vertical plate at the part higher than the outer vertical plate and are arranged at intervals in the front and rear directions.

[0013] In some embodiments, the connecting seat is composed of a bottom plate and an arc-shaped bent plate located on the upper surface of the bottom plate and extending from one end to the other end in the length direction of the bottom plate. An arc-shaped groove extending upwards is provided in the middle region of the bottom surfaces of the left tie rod seat and the right tie rod seat, and the inner contour of the arc-shaped groove is adapted to the outer contour of the arc-shaped bent plate, so that the connecting seat is welded to the bottom surfaces of the left tie rod seat and the right tie rod seat in an embedded manner.

[0014] In some embodiments, two gaps for avoiding the suspension tie rod and arranged at intervals in the front and rear directions are provided in the region directly below the suspension tie rod on the arc-shaped bent plate. A plurality of triangular transition rib plates are welded between the inner surface of the left tie rod seat and the bottom plate and between the inner surface of the right tie rod seat and the bottom plate respectively.

[0015] Second aspect, the present invention provides a vehicle frame, comprising two longitudinals arranged side by side at intervals and a plurality of suspension tie rods, and further comprising the above-mentioned tie rod seat assembly. The tie rod seat assembly is fixedly connected to the longitudinal, and the plurality of suspension tie rods are hinged to the tie rod seat assembly.

[0016] Third aspect, the present invention provides a mining dump truck, comprising the above-mentioned tie rod seat assembly; or, comprising the above-mentioned vehicle frame.

[0017] Advantages of the present invention: 1. The tie rod seat designed in the present invention is of a box structure, which can improve the torsional stiffness of the vehicle frame. At the same time, the weld seams are strengthened and transition rib plates are added at the connection and transition positions to ensure the fatigue life of the structure.

[0018] 2. The integral bushing seat designed in the present invention penetrates the inner and outer vertical plates of the box-structured tie rod seat. On the one hand, it improves the local structural stiffness and strength. On the other hand, its integrity can make the loads on the inner and outer vertical plates of the tie rod seat uniform, avoiding cracking of the overall structure caused by unilateral failure.

[0019] 3. In the present invention, a reinforcing patch plate is welded inside the welding position of the unilateral bushing seat and the vertical plate to ensure the local structural strength. While reducing the root stress of the unilateral bushing seat, it enables lightweight design of the inner and outer vertical plates of the tie rod seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0021] In the drawings: Figure 1 is a schematic structural diagram of the connection between the tie rod seat assembly, the vehicle frame and the suspension tie rods provided by the present invention; Figure 2 is an internal schematic diagram of the connection between the tie rod seat assembly, the vehicle frame and the suspension tie rods provided by the present invention Figure 3 is a schematic structural diagram of the tie rod seat assembly provided by the present invention; Figure 4 is an exploded view of the structure of the tie rod seat assembly provided by the present invention; Figure 5 is an exploded view of the structure of the unilateral tie rod seat provided by the present invention; Figure 6 is a sectional view of the structure of the unilateral tie rod seat provided by the present invention; Figure 7 is a schematic structural diagram of the integral bushing seat provided by the present invention; Figure 8 Schematic structural diagram of the support tube provided by the present invention.

[0022] The markings in the figure are as follows: tie rod seat assembly 10, longitudinal beam 20, suspension tie rod 30, pin shaft 40; Left tie rod seat 11, right tie rod seat 12, connecting seat 13, triangular transition rib plate 14; Integral bushing seat 111, single-sided bushing seat 112, step 112-1, outer vertical plate 113, inner vertical plate 114, welding hole 114-1, support plate 115, inner rib plate assembly 116, reinforcing patch plate 117, through hole 117-1; Outer bushing seat 1111, step 1111-1, sunk groove 1111-2, inner bushing seat 1112, support tube 1113, notch 1113-1, bevel 1113-2, threaded seat 1114.

[0023] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Such as Figure 1 、 Figure 3 、 Figure 4As shown in the figure, a drawbar seat assembly includes a left drawbar seat 11, a right drawbar seat 12, and a connecting seat 13. The left drawbar seat 11 and the right drawbar seat 12 are respectively fixedly connected to two longitudinals 20 arranged side by side at intervals on the vehicle frame. In the upper regions of the left drawbar seat 11 and the right drawbar seat 12, two hinge points a are provided. One of the hinge points a is used to connect the front suspension drawbar 30 in the upper part, and the other hinge point a is used to connect the rear suspension drawbar 30 in the upper part. In the lower regions of the left drawbar seat 11 and the right drawbar seat 12, two hinge points b are provided. One of the hinge points b is used to connect the front suspension drawbar 30 in the lower part, and the other hinge point b is used to connect the rear suspension drawbar 30 in the lower part. The two end regions of the connecting seat 13 along its length direction are respectively lapped with the lower regions of the left drawbar seat 11 and the right drawbar seat 12.

[0028] The structure of the above-mentioned connecting seat will be further described below.

[0029] As shown in Figure 3 , Figure 4 the figure, the connecting seat 13 is composed of a bottom plate and an arc-shaped bent plate located on the upper surface of the bottom plate and extending from one end to the other end along the length direction of the bottom plate. In the middle region of the bottom surfaces of the left drawbar seat 11 and the right drawbar seat 12, an upward-extending arc-shaped groove is provided. The inner contour of the arc-shaped groove is adapted to the outer contour of the arc-shaped bent plate, so that the connecting seat 13 is welded to the bottom surfaces of the left drawbar seat 11 and the right drawbar seat 12 in an embedded manner.

[0030] For a further solution, as shown in Figure 3 , Figure 4 the figure, the arc-shaped bent plate is provided with two notches arranged at intervals front and rear and used for avoiding the suspension drawbar 30 in the region directly below the suspension drawbar 30. A plurality of triangular transition rib plates 14 are welded between the inner surface of the left drawbar seat 11 and the bottom plate and between the inner surface of the right drawbar seat 12 and the bottom plate respectively.

[0031] As can be seen from the above, the drawbar seat assembly 10 includes a left drawbar seat 11, a right drawbar seat 12, a connecting seat 13, and triangular transition rib plates 14. Each part is connected by welding. The left drawbar seat 11 and the right drawbar seat 12 are mirror structures and are welded to the bottom surface and the inner side surface of the longitudinal 20 to ensure the welding connection strength. The connecting seat 13 is a welded frame structure and is welded to connect the left and right drawbar seats 11 and 12. Without interfering with the suspension drawbar 30, the connecting seat 13 is embedded at the bottom of the left and right drawbar seats 11 and 12, which can increase the ground clearance of the vehicle while improving the local structural stiffness. Triangular transition rib plates 14 are symmetrically welded on the left and right sides of the inner connection between the left and right drawbar seats 11 and 12 and the connecting seat 13 to improve the support stiffness of the structure and reduce the weld stress of the left and right drawbar seats 11 and 12 and the connecting seat 13, and improve the structural fatigue life.

[0032] The specific structures of the above-mentioned left pull rod seat and right pull rod seat will be further described below.

[0033] As Figure 3 , Figure 4 shown, the left pull rod seat 11 and the right pull rod seat 12 are mirror structures, which are welded to the bottom surface and the inner side surface of the corresponding longitudinal beam 20 to ensure the welding connection strength; after welding, the left pull rod seat 11 and the right pull rod seat 12 form a box-shaped structure with the bottom surface of the corresponding longitudinal beam 20 and the top surface of the connection seat respectively, ensuring the stiffness of the overall structure.

[0034] As Figure 5 , Figure 6 shown, the left pull rod seat 11 includes an outer vertical plate 113, an inner vertical plate 114, a support plate 115, an integral bushing seat 111 and a single-sided bushing seat 112; the outer vertical plate 113 and the inner vertical plate 114 are arranged opposite to each other left and right, the inner vertical plate 114 is higher than the outer vertical plate 113, and the inner vertical plate 114 is welded to the inner side surface of the longitudinal beam 20 at the part higher than the outer vertical plate 113, and the top surface of the outer vertical plate 113 is welded to the bottom surface of the longitudinal beam 20; a pair of support plates 115 arranged opposite to each other front and back are respectively welded to the front and rear edges between the outer vertical plate 113 and the inner vertical plate 114, and the support plate 115 is bent at the same height as the inner vertical plate 114 to form a horizontal welding surface welded to the bottom surface of the longitudinal beam 20; two integral bushing seats 111 penetrate through the upper regions of the outer vertical plate 113 and the inner vertical plate 114 side by side at a predetermined interval, thus constituting two hinge points a; two single-sided bushing seats 112 are arranged side by side front and back at a predetermined interval in the lower region of the outer vertical plate 113, and another two single-sided bushing seats 112 are arranged side by side front and back at a predetermined interval in the lower region of the inner vertical plate 114; the two front single-sided bushing seats 112 are coaxially arranged to form a hinge point b, and the two rear single-sided bushing seats 112 are coaxially arranged to form a hinge point b.

[0035] Further, as Figure 5 , Figure 6 shown, the middle regions of the outer vertical plate 113 and the inner vertical plate 114 are provided with an inner rib plate assembly 116 extending from top to bottom, further improving the stiffness of the structure and reducing the welding deformation of the bushing seat hole positions after the pull rod seat 10 is welded to the longitudinal beam 20 of the vehicle frame.

[0036] The inner rib plate assembly 116 includes a circular tube, an upper flat plate and a lower flat plate; the axial end faces on both sides of the circular tube are respectively welded to the inner surfaces of the corresponding outer vertical plate 113 and inner vertical plate 114; alternatively, the axial ends on both sides thereof penetrate through the outer vertical plate 113 and the inner vertical plate 114 and then are welded together; the upper flat plate is welded to the radial peripheral surface of the circular tube, the inner surfaces of the outer vertical plate 113 and the inner vertical plate 114; the lower flat plate is welded to the radial peripheral surface of the circular tube, the inner surfaces of the outer vertical plate 113 and the inner vertical plate 114.

[0037] Further solutions, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, at the front and rear ends of the connecting part between the outer vertical plate 113 and the inner vertical plate 114 and the longitudinal beam 20, they are horizontally extended outwards to form protrusions to increase the connection width with the longitudinal beam 20; on the part where the inner vertical plate 114 is higher than the outer vertical plate 113, a plurality of welding holes 114-1 are arranged at intervals in the front and rear and are used to increase the welding strength with the longitudinal beam 20.

[0038] As can be seen from the above, the left and right pull rod seats 11 and 12 include an integral bushing seat 111, a single-sided bushing seat 112, an outer vertical plate 113, an inner vertical plate 114, a support plate 115, and an inner rib plate assembly 116. The pull rod pin shaft 40 is fixed through the middle hole of the bushing seat. The outer vertical plate 113, the inner vertical plate 114, and the front and rear arranged support plates 115 form the external frame structure of the pull rod seat to ensure the stiffness of the overall structure. The outer vertical plate 113 and the support plate 115 are welded to the bottom surface of the longitudinal beam 20 of the vehicle frame, the inner vertical plate 114 is welded to the inner side surface of the vehicle frame, and a plurality of welding holes 114-1 are designed on the inner vertical plate 114 to increase the welding connection strength between the pull rod seat 10 and the longitudinal beam 20 of the vehicle frame. The inner rib plate assemblies 116 in the shape of flat plates and round tubes are welded inside the left and right pull rod seats 11 and 12, and are welded to the inner sides of the outer vertical plate 113 and the inner vertical plate 114 or penetrate the vertical plates for welding, further improving the stiffness of the structure and reducing the welding deformation of the bushing seat hole position after the pull rod seat assembly 10 and the longitudinal beam 20 of the vehicle frame are butt-welded.

[0039] The following further describes the structure of the above-mentioned integral bushing seat.

[0040] Such as Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the integral bushing seat 111 is a three-section welded structure, including a support tube 1113, an inner bushing seat 1112, and an outer bushing seat 1111; the support tube 1113 is located between the outer vertical plate 113 and the inner vertical plate 114, and the support tube 1113 is coaxially arranged with the hinge holes on the outer vertical plate 113 and the inner vertical plate 114, and the outer diameter of the support tube 1113 is the same as the inner diameter of the hinge holes on both sides; the outer diameter of the inner bushing seat 1112 is the same as the outer diameter of the support tube 1113, which is convenient for embedding in the hinge hole on the inner vertical plate 114, and there is no fixed connection between the two; the outer bushing seat 1111 is embedded in the support tube 1113, and there is a step 1111-1 on the outer bushing seat 1111 that protrudes from the outer edge of the support tube 1113, and the step 1111-1 contacts the outer surface of the outer vertical plate 113, serving as the welding positioning surface of the integral bushing seat 111 and the outer vertical plate 113; a coaxial pin hole is provided at the center of both the outer bushing seat 111 and the inner bushing seat 1112.

[0041] Further solutions, such as Figure 2 , Figure 7 , Figure 8 As shown, a notch 1113-1 for avoiding the suspension tie rod 30 is formed in the middle area of the radial peripheral surface of the support tube 1113, and bevels 1113-2 for welding with the inner bushing seat 1112 and the outer bushing seat 1111 are formed at both axial ends of the support tube 1113; a window opposite to the notch 1113-1 is provided on the support plate 115, and the joint of the suspension tie rod 30 sequentially passes through the window and the notch 1113-1 and then enters the support tube 1113, and the joint of the suspension tie rod 30 is hinged to the integral bushing seat 111 through the through pin 40; a sunk groove 1111-2 is provided on the outer surface of the outer bushing seat 1111, and a threaded seat 1114 is welded in the sunk groove 1111-2, and the threaded seat 1114 is used in cooperation with a bolt to fix the pin 40.

[0042] As can be seen from the above, the integral bushing seat 111 is composed of the outer bushing seat 1111, the inner bushing seat 1112, the support tube 1113 and the threaded seat 1114 by welding. The bushing seat penetrates above the outer vertical plate 113 and the inner vertical plate 114 and is welded to the outer surface of the vertical plate, and is not welded on the inner side, which is convenient for repairing the crack of the overall structure. There is a step 1111-1 protruding from the outer edge of the support tube on the outer bushing seat 1111, which contacts the outer surface of the outer vertical plate 113 and serves as the welding positioning surface of the integral bushing seat 111 and the outer vertical plate 113. The outer diameter of the outer edge of the inner bushing seat 1112 is the same as that of the support tube 1113, which is convenient for passing through the inner and outer vertical plates. A sunk groove 1111-2 is machined on the outer bushing seat 1111 for positioning and welding the threaded seat 1114 to prevent the protrusion of the threaded seat weld from interfering with the baffle of the pin 40. The threaded seat 1114 is used in cooperation with a bolt to fix the pin 40 to prevent it from rotating or moving. A notch 1113-1 for avoiding the suspension tie rod 30 is formed in the middle of the support tube 1113, and bevels 1113-2 are formed at both ends for welding with the inner and outer bushing seats 1112 and 1111, connecting the inner and outer bushing seats 1112 and 1111 into one body, reducing the stress at the roots of the inner and outer bushing seats 1112 and 1111 and the vertical plates. And when the suspension tie rod 30 transmits the axle load, the inner and outer vertical plates of the tie rod seat can bear the load at the same time, reducing the possibility of structural cracking.

[0043] The structure of the above-mentioned single-sided bushing seat is further described below.

[0044] As Figure 5 , Figure 6 shown, the single-sided bushing seat 112 is a casting, which is respectively embedded in the hinge holes of the inner vertical plate 114 and the outer vertical plate 113, and a step protruding from the hinge hole is provided at the outer edge of the single-sided bushing seat 112, and the step is in fit positioning with the outer surfaces of the inner vertical plate 114 and the outer vertical plate 113; a pin hole arranged coaxially is provided at the center of each of the two front single-sided bushing seats 112 and the two rear single-sided bushing seats 112.

[0045] A further solution, such as Figure 2 、 Figure 5 shown, the gap between two relatively arranged single-sided bushing seats 112 is not less than the joint width of the suspension tie rod 30. The support plate 115 does not contact the connecting seat 13, and thus a window is reserved opposite to the gap. After the joint of the suspension tie rod 30 passes through the window, it enters the gap, and the joint of the suspension tie rod 30 is hinged to the single-sided bushing seats 112 on both sides through a through pin 40; threaded seats are welded on the outer surfaces of the inner vertical plate 114 and the outer vertical plate 113 near the single-sided bushing seats 112, and the threaded seats are used in cooperation with bolts to fix the pin 40.

[0046] A further solution, such as Figure 5 、 Figure 6 shown, reinforcing plates 117 for reducing the internal cantilever length of the single-sided bushing seats 112 are welded on the inner surfaces of the outer vertical plate 113 and the inner vertical plate 114; two through holes 117-1 are provided on the reinforcing plate 117, and one through hole 117-1 corresponds to one single-sided bushing seat 112. Welding grooves for welding together with the single-sided bushing seats 112 are provided around the through holes 117-1.

[0047] As can be seen from the above, the single-sided bushing seats 112 are located below the left and right tie rod seats 11 and 12. The structure is relatively compact locally due to the influence of the connecting seat 13, but the stiffness is better than that above the tie rod seats. The single-sided bushing seats 112 respectively pass through the outer vertical plate 113 and the inner vertical plate 114, and single-sided steps 112-1 are also designed thereon, which are fitted and positioned with the outer surfaces of the inner and outer vertical plates 114 and 113. Reinforcing plates 117 are welded at the corresponding positions on the inner sides of the vertical plates for the single-sided bushing seats 112. There are two through holes 117-1 on the single reinforcing plate 117, which are connected to the front and rear single-sided bushing seats, reducing the internal cantilever length of the single-sided bushing seats 112 and reducing the stress at the root of the cantilever. Welding grooves are provided around the through holes 117-1 to enhance the connection strength between the single-sided bushing seats 112 and the reinforcing plates 117.

[0048] In summary, the present invention provides a tie rod seat assembly. The tie rod seat is of a box-type structure, which can improve the torsional stiffness of the vehicle frame. At the same time, the weld seams are strengthened and transition rib plates are added at the connection and transition positions to ensure the fatigue life of the structure; an integral through-type bushing seat is used at the tie rod seat hole position to improve the stiffness and strength of the local structure. If the structure cracks, the cracking area can be controlled, which is convenient for maintenance; in the locally compact space position, a half-through bushing and an internal plate method are used to reduce the cantilever length of the bushing and improve the stiffness and strength of the structure.

[0049] Such as Figure 1As shown in the figure, the present invention also provides a vehicle frame, which includes two longitudinals 20 arranged side by side at intervals, a plurality of suspension tie rods 30, and the above-mentioned tie rod seat assembly 10. The tie rod seat assembly 10 is welded to the longitudinal 20 and connected to the suspension tie rod 30 through a tie rod pin 40. The tie rod seat assembly 10 is a box-shaped structure formed by welding, which can improve the overall torsional stiffness of the vehicle frame while bearing the load of the suspension tie rod 30. The position of the bushing seat where the tie rod seat assembly 10 is connected to the suspension tie rod 30 is designed with local reinforcement to improve the strength and service life of the structure.

[0050] The mining dump truck provided by the present invention will be described below. The mining dump truck described below can be correspondingly referred to the vehicle frame described above.

[0051] A mining dump truck provided by the present invention may include the vehicle frame as described in any one of the above embodiments.

[0052] The beneficial effects achieved by the mining dump truck provided by the present invention are consistent with those achieved by the vehicle frame provided by the present invention, so they will not be elaborated here.

[0053] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0054] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features contained in other embodiments rather than other features, the combination of the features of different embodiments also means that it is within the protection scope of the present invention and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0055] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or decorations equivalent to changes within the scope of the technical solution of the present invention without departing from the technical solution of the present invention. However, any simple modification, equivalent change, and decoration made to the above embodiments based on the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A pull rod seat assembly, characterized in that, include: The left tie rod seat and the right tie rod seat are respectively fixedly connected to two longitudinal beams arranged side by side at intervals on the frame; the upper regions of the left tie rod seat and the right tie rod seat are each provided with two hinge points a, one of which is used to connect the upper front suspension tie rod, and the other hinge point a is used to connect the upper rear suspension tie rod; the lower regions of the left tie rod seat and the right tie rod seat are each provided with two hinge points b, one of which is used to connect the lower front suspension tie rod, and the other hinge point b is used to connect the lower rear suspension tie rod; The connecting seat has two end regions along its length direction respectively overlapped with the lower regions of the left tie rod seat and the right tie rod seat; Wherein, the left tie rod seat comprises: The outer vertical plate and the inner vertical plate are arranged opposite to each other on the left and right, the inner vertical plate is higher than the outer vertical plate, the inner vertical plate is welded to the inner side surface of the longitudinal beam at a position higher than the outer vertical plate, and the top surface of the outer vertical plate is welded to the bottom surface of the longitudinal beam; A pair of support plates arranged front and back oppositely are respectively welded at the front and rear edges between the outer vertical plate and the inner vertical plate, and the support plates are bent at the same height as the inner vertical plate to form a horizontal welding surface welded to the bottom surface of the longitudinal beam; Two integral shaft sleeve seats are arranged side by side in front and back at a predetermined interval and penetrate the upper area of ​​the outer vertical plate and the inner vertical plate to form the two hinge points a; Four single-sided shaft sleeve seats, two of which are arranged side by side front and back at a predetermined interval in the lower area of ​​the outer vertical plate, and the other two are arranged side by side front and back at a predetermined interval in the lower area of ​​the inner vertical plate; the front two single-sided shaft sleeve seats are coaxially arranged to form a hinge point b, and the rear two single-sided shaft sleeve seats are coaxially arranged to form a hinge point b.

2. A tie rod seat assembly according to claim 1, characterized in that: The left tie rod seat and the right tie rod seat are mirror-image structures and are welded to the corresponding longitudinal beams. After welding, the left tie rod seat and the right tie rod seat, the bottom surface of the corresponding longitudinal beam and the top surface of the connecting seat all form a box-type structure.

3. A pull rod seat assembly according to claim 1, characterized in that, The integral shaft sleeve seat is a three-section welded structure, comprising: A support tube is located between the outer vertical plate and the inner vertical plate. The support tube is coaxially arranged with the reaming holes on the outer vertical plate and the inner vertical plate, and the outer diameter of the support tube is the same as the inner diameter of the reaming holes on both sides. The inner shaft sleeve seat has an outer diameter that is the same as the outer diameter of the support tube, so as to be easily embedded in the reaming hole on the inner vertical plate, and there is no fixed connection between the two; An outer shaft sleeve seat is embedded in the support tube, and has a step protruding from the outer edge of the support tube on the outer shaft sleeve seat. The step contacts the outer surface of the outer vertical plate and serves as a welding positioning surface for the integral shaft sleeve seat and the outer vertical plate. A coaxially arranged pin shaft hole is provided at the center of the outer shaft sleeve seat and the inner shaft sleeve seat.

4. A tie rod seat assembly according to claim 3, characterized in that: An opening for avoiding the suspension tie rod is formed in the middle area of the radial peripheral surface of the support pipe, and welding bevels are formed at both axial ends of the support pipe for welding with the inner bushing seat and the outer bushing seat; a window opposite to the opening is arranged on the support plate, and the joint of the suspension tie rod sequentially passes through the window and the opening and then enters the support pipe, and the joint of the suspension tie rod is hinged to the integral bushing seat through a through pin shaft; A sunk groove is arranged on the outer surface of the outer bushing seat, and a threaded seat is welded in the sunk groove, and the threaded seat is used in cooperation with a bolt to fix the pin shaft.

5. The assembly of tie rod seats according to claim 1, wherein: The single-sided bushing seat is a casting, which is respectively embedded in the hinge holes of the inner vertical plate and the outer vertical plate, and a step protruding from the hinge hole is arranged on the outer edge of the single-sided bushing seat, and the step is in fit positioning with the outer surfaces of the inner vertical plate and the outer vertical plate; A pin shaft hole arranged coaxially is provided at the center of each of the two single-sided bushing seats on the front side and the two single-sided bushing seats on the rear side.

6. The assembly of tie rod seats according to claim 5, wherein: The gap between the two relatively arranged single-sided bushing seats is not less than the width of the joint of the suspension tie rod, and the support plate is not in contact with the connecting seat, and thus a window opposite to the gap is reserved, and the joint of the suspension tie rod passes through the window and then enters the gap, and the joint of the suspension tie rod is hinged to the single-sided bushing seats on both sides through a through pin shaft; Threaded seats are welded on the outer surfaces of the inner vertical plate and the outer vertical plate near the single-sided bushing seat, and the threaded seats are used in cooperation with bolts to fix the pin shaft.

7. The assembly of tie rod seats according to claim 5, wherein: Reinforcing plates for reducing the internal cantilever length of the single-sided bushing seat are welded on the inner surfaces of the outer vertical plate and the inner vertical plate; Two through holes are provided on the reinforcing plate, and one through hole corresponds to one single-sided bushing seat, and welding bevels for welding with the single-sided bushing seat are arranged on the periphery of the through hole.

8. The assembly of tie rod seats according to claim 1, wherein: Inner rib plate assemblies extending from top to bottom are arranged in the middle areas of the outer vertical plate and the inner vertical plate; the inner rib plate assemblies include: A round pipe, the axial end faces on both sides of which are respectively welded to the inner surfaces of the corresponding outer vertical plate and inner vertical plate; or, the axial ends on both sides of which penetrate through the outer vertical plate and the inner vertical plate and then are welded together; An upper flat plate, which is welded to the radial peripheral surface of the round pipe, the inner surfaces of the outer vertical plate and the inner vertical plate; A lower flat plate, which is welded to the radial peripheral surface of the round pipe, the inner surfaces of the outer vertical plate and the inner vertical plate.

9. The assembly of tie rod seats according to claim 1, wherein: The front end and the rear end of the outer vertical plate and the inner vertical plate at the position connected to the longitudinal beam are both horizontally extended outwards to form protrusions to increase the connection width with the longitudinal beam; A plurality of welding holes for increasing the welding strength with the longitudinal beam are arranged at intervals in the front and rear directions on the inner vertical plate at a position higher than the outer vertical plate.

10. A vehicle frame, comprising two longitudinals arranged side by side at intervals and a plurality of suspension tie rods, wherein: It further includes a drawbar seat assembly according to any one of claims 1 to 9, the drawbar seat assembly being fixedly connected to the longitudinal beam, and a plurality of suspension drawbars being hinged to the drawbar seat assembly.

11. A mining dump truck, characterized in that: It includes a drawbar seat assembly according to any one of claims 1 to 9; or, it includes the vehicle frame according to claim 10.

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