Mine car dump truck mcfarson suspension A-shaped arm connecting structure and mine car chassis

Abstract

The application discloses a mine car self-unloading car McPherson suspension A-shaped arm connecting structure, which comprises a pin shaft, a pressing plate, a thrust ring, a joint bearing, a connecting key, a steering arm, an A-shaped arm and an axle. The application further discloses a mine car chassis using the mine car self-unloading car McPherson suspension A-shaped arm connecting structure. The application solves the arrangement and connection problems of the A-shaped arm and the steering arm on the chassis of the mine car.

Description

Technical Field

[0001] This invention relates to the field of mining dump truck technology, specifically to a MacPherson strut A-arm connection structure for a mining dump truck and a mining truck chassis. Background Technology

[0002] The suspension system is a crucial component of the mining truck chassis. A well-designed suspension system contributes to the overall comfort and handling stability of the mining truck. The gas spring non-independent suspension consists of gas springs, lateral thrust rods, buffer blocks, and longitudinal thrust rods. The gas springs, installed between the frame and axle, mitigate the impact force from the road surface acting on the wheels as it is transmitted to the frame, while also damping the resulting vibrations. The upper and lower longitudinal thrust rods transmit longitudinal forces and withstand the reaction torque caused by braking forces. One lower longitudinal thrust rod is mounted between the front axle and the longitudinal beam on each side, while an upper longitudinal thrust rod is mounted on the inner support of the front axle and the longitudinal beam. The upper and lower longitudinal thrust rods form a parallelogram to ensure that the caster angle remains constant during wheel vertical movement. The lateral thrust rod is mounted on the support between the left longitudinal beam and the right side of the front axle, transmitting lateral forces.

[0003] In a candle-type suspension, the kingpin is rigidly fixed to the suspension, and the steering knuckle is connected to the sleeve. When the wheel bounces, the steering knuckle and sleeve move together along the kingpin axis. For the steering wheel, the kingpin's positioning angle does not change when the suspension deforms; only the track width and wheelbase change slightly. Therefore, this is beneficial for the car's steering control and driving stability. However, the lateral forces are entirely borne by the long sleeve fitted onto the kingpin and the kingpin itself, resulting in high frictional resistance and severe wear between the sleeve and the kingpin.

[0004] The MacPherson strut suspension consists of a coil spring, a shock absorber, and a triangular lower control arm (A-arm). The coil spring is connected to the shock absorber, the lower part of the shock absorber is connected to the upper part of the steering knuckle, and the triangular lower control arm is connected to the lower part of the steering knuckle. The swing-type connection structure of the MacPherson front suspension can effectively reduce the friction between the cylinder and the piston rod, providing effective cushioning against impacts from bumpy roads and large gravel, giving the driver a comfortable driving experience.

[0005] Unlike traditional air spring non-independent suspensions and cantilever suspensions, MacPherson strut suspensions are usually designed with A-arms. However, the A-arms of MacPherson strut suspensions are connected to the lower part of the steering knuckle. Therefore, the connection of the steering arm has become a technical problem, which makes it impossible for MacPherson strut suspensions to be used on the chassis of mining trucks. Summary of the Invention

[0006] The technical problem solved by this invention is to provide a MacPherson suspension A-arm connection structure for a mining truck dump truck and a mining truck chassis, which solves the problems of arranging and connecting the A-arm and steering arm on the chassis of the mining truck.

[0007] The technical solution is as follows:

[0008] The MacPherson strut A-arm connection structure for a mining truck dump truck includes: a pin, a pressure plate, a thrust ring, a spherical bearing, a connecting key, a steering arm, an A-arm, and an axle; the top of the pin has a pin through groove, a first pin threaded hole is provided in the pin through groove, and a second pin threaded hole is provided at the bottom of the pin; the pressure plate has a pressure plate through hole, and the connecting key has a connecting key through hole; the thrust ring includes: a ring body and a ring post, the ring body is an annular structure, the bottom of the ring post is connected to the inner circle of the ring body, and the ring body is provided with... There are multiple thrust ring through holes; the steering arm includes: a connecting base and a connecting fork arm, with the rear of the connecting fork arm connected to the front of the connecting base; the top of the connecting base is provided with a base through hole, a steering arm keyway, and a steering arm through hole, the steering arm keyway intersecting with the base through hole, and multiple steering arm through holes located outside the base through hole; the lower part of the connecting base is provided with a cone head, and the base through hole penetrates the cone head; the front end of the A-arm is provided with a bearing seat, the bearing seat is provided with a bearing seat hole, the bearing seat hole is a stepped through hole, and the bottom of the bearing seat hole is provided with... The bearing has an A-shaped threaded hole; the spherical plain bearing includes an outer ring and an inner ring. The outer ring has an inner hole, which is spherical. The outer wall of the inner ring is spherical, and a through hole is provided in the middle. The inner ring is installed in the inner hole of the outer ring. The bottom of the axle has an axle bottom surface, which has an axle keyway and multiple axle threaded holes. The spherical plain bearing is installed in the bearing housing hole. The lower end of the pin is fitted into the through hole of the inner ring. The pressure plate abuts against the ends of the pin and the inner ring. The pressure plate bolt passes through the through hole of the pressure plate and connects to the second pin. On the shaft threaded hole; the thrust ring is located at the bottom of the bearing housing hole, the ring column extends into the bearing housing hole and abuts against the lower part of the outer ring, the thrust ring bolt passes through the thrust ring through hole and connects to the A-arm threaded hole; the base through hole is fitted onto the pin, the bottom of the cone head presses against the inner ring, the connecting base is installed on the lower part of the axle bottom surface, the connecting key is inserted into the steering arm keyway, the axle keyway, and the pin through groove, the key fixing bolt passes through the connecting key through hole and connects to the first pin threaded hole; the steering arm bolt passes through the steering arm through hole and connects to the axle threaded hole.

[0009] Furthermore, the pin is cylindrical in shape, and the connecting key is rectangular in shape.

[0010] Furthermore, the pin slot is provided with two first pin threaded holes, the bottom of the pin is provided with three second pin threaded holes, the pressure plate is provided with three pressure plate through holes, and the connecting key is provided with two connecting key through holes.

[0011] Furthermore, the front end of the connecting fork arm is connected to two fork arm segments, each fork arm segment is provided with a steering through hole, the steering through holes on the two fork arm segments are positioned opposite each other, and a fork arm connecting column connects the two fork arm segments.

[0012] Furthermore, the fork arm split on the outside of the steering through hole is provided with a fork arm split threaded hole, and a fork arm split screw is provided in the fork arm split threaded hole for fixing the steering pin shaft at the steering through hole.

[0013] Furthermore, the rear end of the A-arm is provided with two connecting arms, and the front end of the connecting arms is provided with arm shaft holes.

[0014] Furthermore, multiple steering arm through holes are located on the same circle, and the axle threaded holes are located on the same circle, with the steering arm through holes and the axle threaded holes being positioned opposite each other; multiple A-arm threaded holes are located on the same circle, and multiple thrust ring through holes are located on the same circle, with the A-arm threaded holes and the thrust ring through holes being positioned opposite each other, and the steering arm keyway and the axle keyway being positioned opposite each other.

[0015] Furthermore, the pin and the inner ring of the spherical bearing are clearance-fitted, and the pin and the base through hole of the steering arm are interference-fitted.

[0016] Furthermore, the bearing housing bore is provided with a positioning step, and the upper part of the outer ring abuts against the positioning step; the side wall of the bearing housing bore is provided with a bearing housing threaded hole, and the outer ring fixing screw is installed in the bearing housing threaded hole. The outer ring is fixed by the cooperation of the outer ring fixing screw and the thrust ring.

[0017] The mining truck chassis uses a MacPherson strut suspension A-arm connection structure for mining truck dump trucks. The connecting fork arm and steering mechanism are connected by a steering pin, and the support arm shaft hole is connected to the chassis crossbeam through an A-arm connecting pin.

[0018] The technical effects of this invention include:

[0019] 1. This invention has the advantages of compact structure, ingenious connection, and excellent stress distribution. It effectively solves the problem of arranging A-arms and steering arms, and solves the problem of connecting A-arms and steering arms, thus realizing the application of MacPherson strut suspension to the chassis of mining trucks.

[0020] The A-arm and steering arm are tightly connected by a pin and are attached to the bottom of the axle.

[0021] 2. The structure is highly practical, easy to operate, and easy to implement.

[0022] 3. It saves space in the layout of the mining truck chassis, and the mechanism is ingenious and the layout is compact. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the MacPherson strut A-arm connection structure of the mine dump truck in this invention;

[0024] Figure 2 This is a schematic diagram of the pin structure in this invention;

[0025] Figure 3This is a schematic diagram of the pressure plate in this invention;

[0026] Figure 4 This is a schematic diagram of the structure of the stop ring of the present invention;

[0027] Figure 5 This is a schematic diagram of the connecting key in this invention;

[0028] Figure 6 This is a schematic diagram of the steering arm structure in this invention;

[0029] Figure 7 This is a schematic diagram of the A-shaped arm in this invention;

[0030] Figure 8 This is a schematic diagram of the axle structure in this invention. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0032] like Figure 1 The diagram shown is a schematic diagram of the overall structure of the MacPherson strut A-arm connection structure for the mine dump truck in this invention.

[0033] The MacPherson strut A-arm connection structure for mining truck dump trucks includes: pin 1, pressure plate 2, thrust ring 3, spherical bearing 4, connecting key 5, steering arm 6, A-arm 7, and axle 8.

[0034] like Figure 2 The figure shown is a schematic diagram of the structure of the pin 1 in this invention.

[0035] The pin 1 is cylindrical in shape, with a pin through groove 11 at the top, two first pin threaded holes 12 at the pin through groove 11, and three second pin threaded holes 13 at the bottom.

[0036] like Figure 3 The diagram shown is a structural schematic of the pressure plate 21 in this invention.

[0037] The pressure plate 2 is provided with (three) pressure plate through holes 21, and the position of the pressure plate through holes 21 corresponds to the second pin thread hole 13.

[0038] like Figure 4 The diagram shown is a schematic diagram of the structure of the push ring 3 in this invention.

[0039] The thrust ring 3 includes: a ring body 31 and a ring post 32. The ring body 31 has an annular structure. The bottom of the ring post 32 is connected to the inner circle of the ring body 31. The ring body 31 is provided with multiple thrust ring through holes 33.

[0040] like Figure 5 The diagram shown is a structural schematic of the connecting key 5 in this invention.

[0041] The connecting key 5 is a rectangular prism with a connecting key through hole 51.

[0042] like Figure 6 The diagram shown is a schematic diagram of the steering arm 6 in this invention.

[0043] The steering arm 6 includes: a connecting base 61 and a connecting fork arm 62, the rear of which is connected to the front of the connecting base 61; the top of the connecting base 61 is provided with a base through hole 63, a steering arm keyway 64, and a steering arm through hole 65, the steering arm keyway 64 intersects with the base through hole 63, and multiple steering arm through holes 65 are located outside the base through hole 63; the front end of the connecting fork arm 62 is connected to two fork arm splits 66, and the fork arm splits 66 are provided with two steering through holes 67, the steering through holes 67 on the two fork arm splits 66 are positioned opposite each other.

[0044] A cone head 69 is provided at the lower part of the connecting base 61, and the through hole 63 of the base penetrates the cone head 69.

[0045] Multiple steering arm through holes 65 are located on the same circle, and the steering arm through holes 65 are positioned opposite to the axle threaded holes 82. Two wishbone segments 66 are parallel to each other, and a wishbone connecting post 68 connects the two wishbone segments 66. A wishbone segment threaded hole is provided on the outer side of the steering through hole 67, and a wishbone segment screw is installed in the threaded hole to fix the steering pin at the steering through hole 67. When the connecting wishbone 62 is connected to the steering mechanism via the steering pin, the steering pin is inserted into the steering through hole 67, and the wishbone segment threaded hole is used to install the wishbone segment screw to fix the steering pin.

[0046] like Figure 7 The figure shown is a schematic diagram of the structure of the A-shaped arm 7 in this invention.

[0047] The front end of the A-arm 7 is provided with a bearing seat 71, and the rear end is provided with two connecting arms 72. The bearing seat 71 is provided with a bearing seat hole 73 in the middle, and the bottom of the bearing seat hole 73 is provided with an A-arm threaded hole 74. The side wall of the bearing seat hole 73 is provided with a bearing seat threaded hole, and an outer ring fixing screw 75 is installed in the bearing seat threaded hole. The front end of the connecting arm 72 is provided with an arm shaft hole 76.

[0048] The A-arm threaded hole 74 is positioned opposite to the multiple thrust ring through holes 33 at the bottom of the thrust ring 3.

[0049] The outer ring 41 of the spherical plain bearing 4 is interference-fitted with the bearing housing hole 71. The bearing housing hole 73 is a stepped through hole with a positioning step. The upper part of the outer ring 41 rests on the positioning step, and the outer ring 41 is fixed by the outer ring fixing screw 75 and the thrust ring 3.

[0050] The spherical plain bearing 4 includes an outer ring 41 and an inner ring 42. The outer ring 41 has an inner hole, which is spherical. The outer wall of the inner ring 42 is spherical, and an inner ring through hole is provided in the middle. The inner ring 42 is installed in the inner hole of the outer ring. The inner ring 42 is fitted onto the pin 1 through the inner ring through hole. A cone head 69 presses against the inner ring 42, and the lower pressure plate 2 simultaneously abuts against the ends of the pin 1 and the inner ring 42. The fit between the outer ring 41 and the inner ring 42 is adjusted by the outer ring fixing screw 75.

[0051] like Figure 8 The diagram shown is a structural schematic of the axle 8 in this invention.

[0052] The bottom of the axle 8 is provided with an axle bottom surface 81, and the axle bottom surface 81 is provided with an axle keyway 82 and multiple axle threaded holes 83.

[0053] The steering arm keyway 64 and the axle keyway 84 are positioned opposite each other.

[0054] The spherical plain bearing 4 is installed in the bearing seat hole 71 of the A-arm 7. The lower end of the pin 1 is fitted into the inner ring through hole of the spherical plain bearing 4. The pressure plate 2 abuts against the ends of the pin 1 and the inner ring 42. The pressure plate bolt 22 passes through the pressure plate through hole 21 and is connected to the second pin thread hole 13 at the bottom of the pin 1. The thrust ring 3 is located at the bottom of the bearing seat hole 71. The ring post 32 extends into the bearing seat hole 71 and abuts against the lower part of the outer ring 41. The thrust ring bolt 34 passes through the thrust ring through hole 33 and is connected to the thread hole 74 of the A-arm, connecting the A-arm 7 to the lower part of the pin 1. The base through hole 63 of the steering arm 6 is fitted onto the pin 1, the bottom of the cone head 69 is pressed onto the inner ring 42, the connecting base 61 is installed on the lower part of the axle bottom surface 81 of the axle 8, the connecting key 5 is inserted into the steering arm keyway 64, the axle keyway 84, and the pin through groove 11, the key fixing bolt 52 passes through the connecting key through hole 51 and is connected to the first pin thread hole 12, connecting the steering arm 6 to the upper part of the pin 1; the steering arm bolt passes through the steering arm through hole 65 and is connected to the axle thread hole 83, connecting the steering arm 6 to the lower part of the axle 8.

[0055] The pin 1 is clearance-fitted with the inner ring 42 of the spherical bearing 4. The pin 1 passes through the steering arm 6 and is interference-fitted with the base through hole 63 of the steering arm 6.

[0056] The MacPherson strut A-arm connection structure of the mining truck dump truck is applied to the chassis of the mining truck. The connecting fork arm 62 is connected to the steering mechanism through the steering pin shaft, and the support arm shaft hole 76 of the connecting arm 72 is connected to the chassis crossbeam through the A-arm connecting pin shaft.

[0057] The terminology used in this invention is descriptive and exemplary, not restrictive. Because this invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A MacPherson strut A-arm connection structure for a mining dump truck, characterized in that, include: The components include: a pin, a pressure plate, a thrust ring, a spherical bearing, a connecting key, a steering arm, an A-arm, and an axle. The pin has a pin through groove at its top, a first pin threaded hole at the pin through groove, and a second pin threaded hole at its bottom. The pressure plate has a pressure plate through hole, and the connecting key has a connecting key through hole. The thrust ring includes a ring body and a ring post. The ring body has a ring-shaped structure, and the bottom of the ring post is connected to the inner circle of the ring body. The ring body has multiple thrust ring through holes. The steering arm includes: a connecting... The connecting base and connecting fork arm are connected, with the rear of the connecting fork arm connected to the front of the connecting base. The top of the connecting base has a base through hole, a steering arm keyway, and steering arm through holes; the steering arm keyway intersects with the base through hole, and multiple steering arm through holes are located outside the base through hole. The lower part of the connecting base has a tapered head, through which the base through hole passes. The front end of the A-arm has a bearing seat with a bearing seat hole, which is a stepped through hole. The bottom of the bearing seat hole has an A-arm threaded hole. The spherical plain bearing includes an outer ring and an inner ring. The outer ring has an inner bore, which is spherical. The outer wall of the inner ring is spherical, and a through hole is provided in the middle. The inner ring is installed in the inner bore of the outer ring. The bottom of the axle has an axle bottom surface, which has an axle keyway and multiple axle threaded holes. The spherical plain bearing is installed in the bearing housing bore. The lower end of the pin is fitted into the through hole of the inner ring. A pressure plate abuts against the ends of the pin and the inner ring. A pressure plate bolt passes through the through hole of the pressure plate and connects to the threaded hole of the second pin. The thrust ring is located at the bottom of the bearing housing hole, and the ring column extends into the bearing housing hole and abuts against the lower part of the outer ring. The thrust ring bolt passes through the thrust ring through hole and connects to the threaded hole of the A-arm. The base through hole is fitted onto the pin, and the bottom of the cone head presses against the inner ring. The connecting base is installed on the lower part of the axle bottom surface. The connecting key is inserted into the steering arm keyway, the axle keyway, and the pin through groove. The key fixing bolt passes through the connecting key through hole and connects to the threaded hole of the first pin. The steering arm bolt passes through the steering arm through hole and connects to the threaded hole of the axle.

2. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, The pin is cylindrical in shape, and the connecting key is rectangular in shape.

3. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, The pin slot has two first pin threaded holes, the bottom of the pin has three second pin threaded holes, the pressure plate has three pressure plate through holes, and the connecting key has two connecting key through holes.

4. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, The front end of the connecting fork arm is connected to two fork arm segments. Each fork arm segment is provided with a steering through hole. The steering through holes on the two fork arm segments are positioned opposite each other, and a fork arm connecting column connects the two fork arm segments.

5. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 4, characterized in that, The fork arm split on the outside of the steering through hole is provided with a fork arm split threaded hole, and the fork arm split screw is provided in the fork arm split threaded hole to fix the steering pin shaft at the steering through hole.

6. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, The rear end of the A-arm has two connecting arms, and the front end of the connecting arms has a support shaft hole.

7. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, Multiple steering arm through holes are located on the same circle, and the axle threaded holes are located on the same circle, with the steering arm through holes and the axle threaded holes being positioned opposite each other; multiple A-arm threaded holes are located on the same circle, and multiple thrust ring through holes are located on the same circle, with the A-arm threaded holes and the thrust ring through holes being positioned opposite each other, and the steering arm keyway and the axle keyway being positioned opposite each other.

8. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, The pin and the inner ring of the spherical bearing are clearance fit, and the pin and the base hole of the steering arm are interference fit.

9. The MacPherson strut A-arm connection structure for a mining truck dump truck as described in claim 1, characterized in that, The bearing housing bore is provided with a positioning step, and the upper part of the outer ring rests on the positioning step; the side wall of the bearing housing bore is provided with a bearing housing threaded hole, and the outer ring fixing screw is installed in the bearing housing threaded hole. The outer ring is fixed by the cooperation of the outer ring fixing screw and the thrust ring.

10. A mining truck chassis, using the MacPherson strut A-arm connection structure for mining truck dump trucks as described in any one of claims 1-9, characterized in that, The connecting fork arm is connected to the steering mechanism via a steering pin, and the connecting arm shaft hole is connected to the chassis crossbeam via an A-arm connecting pin.

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