CN109177670B - Rear axle suspension system of dump truck - Google Patents
Rear axle suspension system of dump truck Download PDFInfo
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- CN109177670B CN109177670B CN201811041189.3A CN201811041189A CN109177670B CN 109177670 B CN109177670 B CN 109177670B CN 201811041189 A CN201811041189 A CN 201811041189A CN 109177670 B CN109177670 B CN 109177670B
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- axle suspension
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- suspension seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
- B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/001—Suspension arms, e.g. constructional features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/005—Ball joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/14—Independent suspensions with lateral arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/10—Constructional features of arms
- B60G2206/121—Constructional features of arms the arm having an H or X-shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/02—Trucks; Load vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The rear axle suspension system of the dump truck comprises a rear frame and a plurality of rear wheel assemblies, wherein the total number of the rear wheel assemblies is more than or equal to 4, and more than two rear wheel assemblies are respectively arranged on each side of the frame; a rear suspension system is arranged between the rear frame and the rear wheel assembly; the rear suspension system comprises a rear axle suspension device and a rear axle transverse pull rod device, the rear axle transverse pull rod device comprises an upper horizontal swing arm assembly and a lower horizontal swing arm assembly, the number of the lower horizontal swing arm assemblies is two and is symmetrically arranged relative to the upper horizontal swing arm assembly, the number of the rear axle suspension devices is two and is symmetrically arranged relative to the rear axle transverse pull rod device, and the force of the rear wheel assembly is mainly transmitted to a rear frame through rear axle suspension cylinders on two sides of the rear axle transverse pull rod device. In the invention, the rear axle suspension cylinders are respectively arranged on two sides of the rear axle tie rod device and are symmetrically arranged, and the rear wheel assembly is supported by two points, so that the stress of the rear wheel assembly is more uniform, the stability is good, and the rotation of the rear wheel assembly can be effectively prevented by the two suspension cylinders.
Description
Technical Field
The invention relates to the field of dumper trucks, in particular to a dumper rear axle suspension system.
Background
A rear suspension system of a wide dumper is disclosed in the patent document with the application date of 201410081634.4 being 2014.3.7 and the publication date of 2014.5.21, belonging to the technical field of off-highway dumpers; the device is characterized in that a balance suspension bracket is connected with a frame through a traction frame, a rear suspension cylinder and a transverse pull rod, so that the balance suspension can only move in the vertical direction, and the force applied to the balance suspension bracket is transmitted to the frame; the middle axle and the rear axle are connected with the balance suspension bracket through the front longitudinal pull rod, the rear longitudinal pull rod, the balance beam, the front transverse pull rod and the rear transverse pull rod, so that the force applied to the middle and rear axles can be transmitted to the balance suspension bracket, and the equal force applied to the middle and rear axles can be ensured; the rear suspension cylinder is fixed through the pressing force of the locking nut, and is not in interference fit, so that the rear suspension cylinder is convenient to mount; compared with a steel plate spring structure, the structure has the advantages that the bearing capacity of the suspension cylinder is larger than that of a steel plate spring, and no friction pair exists in the whole system, so that the problems that the rear suspension failure rate of the existing wide dumper is high and the large tonnage development is difficult can be solved. In the structure, a middle axle, a rear axle, a front longitudinal pull rod, a rear longitudinal pull rod, a balance beam balance shaft, a front transverse pull rod, a rear transverse pull rod and a balance suspension bracket are of an integral structure, the integral structure is connected with a frame through the transverse pull rod and a suspension cylinder, and after wheels are arranged on the middle axle and the rear axle respectively, the middle axle, the rear axle, the front longitudinal pull rod, the rear longitudinal pull rod, the balance beam, the front transverse pull rod and the rear transverse pull rod can rotate for a certain angle around the balance shaft in order to drive on a rugged road surface, so that one suspension cylinder can be adopted on the same side of the frame to better adapt to the working mode, but the stability of one suspension cylinder is poor, and the suspension cylinder is required to have larger load weight; in addition, it is difficult for the suspension system to achieve the purpose of uniform loading of the wheels.
A dump truck independent wheel rear suspension system is disclosed in application No. 201510759900.9, which has the following problems: 1. the bearing is not sealed externally, and silt and rainwater can easily enter the bearing. 2. The anti-rotation structure of the pin shaft is unreliable, and the pin shaft is easy to rotate. 3. The bearing inner ring is not well positioned, and the retainer rings close to the two ends of the inner ring are difficult to fix the bearing inner ring. In addition, the tie rod is I-shaped, four corners of the tie rod are of the same bearing structure, the coaxiality of the two joint bearings on the same side is poor, and the service life of the bearing is influenced. And the mounting structure is difficult to disassemble and assemble. The longitudinal force of the whole transverse pull rod structure is born by the bearing, and the service life of the bearing is short.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rear axle suspension system of a dump truck, which has reasonable structural design, stable support of rear wheel assemblies and firm structure and realizes the purpose of uniformly loading all the rear wheel assemblies on the same side of a rear frame.
In order to solve the technical problem, the invention comprises a rear frame and a plurality of rear wheel assemblies, wherein the total number of the rear wheel assemblies is more than or equal to 4, and more than two rear wheel assemblies are respectively arranged on each side of the frame; a rear suspension system is arranged between the rear frame and the rear wheel assembly; the rear suspension system comprises a rear axle suspension device and a rear axle transverse pull rod device, the rear axle transverse pull rod device comprises an upper transverse swing arm assembly and a lower transverse swing arm assembly, the number of the lower transverse swing arm assemblies is two, the lower transverse swing arm assemblies are symmetrically arranged relative to the upper transverse swing arm assembly, the number of the rear axle suspension devices is two, the rear axle suspension devices are symmetrically arranged relative to the rear axle transverse pull rod device, the rear axle suspension device comprises a first rear axle suspension seat, a second rear axle suspension seat, a third rear axle suspension seat, a fourth rear axle suspension seat, a fifth rear axle suspension seat and a rear axle suspension cylinder assembly, the first rear axle suspension seat, the second rear axle suspension seat and the third rear axle suspension seat are arranged on a rear frame, the first rear axle suspension seat is arranged above the second rear axle suspension seat, the fourth rear axle suspension seat and the fifth rear axle suspension seat are arranged on a rear wheel assembly, and the fourth rear axle suspension seat is arranged above the fifth rear axle suspension seat, one end of the rear axle suspension cylinder assembly is arranged on the rear wheel assembly, the other end of the rear axle suspension cylinder assembly is hinged to the first rear axle suspension seat, one end of the lower horizontal swing arm assembly is hinged to the second rear axle suspension seat, the other end of the lower horizontal swing arm assembly is hinged to the fifth rear axle suspension seat, one end of the upper horizontal swing arm assembly is connected with the third rear axle suspension seat, and the other end of the upper horizontal swing arm assembly is connected with the fourth rear axle suspension seat.
The invention has the beneficial effects that: the force of the rear wheel assembly is mainly transmitted to the rear frame through rear axle suspension cylinders on two sides of the rear axle tie rod device. In the invention, the rear axle suspension cylinders are respectively arranged on two sides of the rear axle tie rod device and are symmetrically arranged, and the rear wheel assembly is supported by two points, so that the stress of the rear wheel assembly is more uniform, the stability is good, and the rotation of the rear wheel assembly can be effectively prevented by the two suspension cylinders. In the invention, the rear wheel assembly mainly comprises the electric wheel, the speed changer, the wheel hub and the wheel, and the electric wheel and the speed changer do not rotate relative to the rear frame no matter the rear wheel assembly is in a working state or a non-working state, and the wheel hub and the wheel can rotate relative to the electric wheel, so that the rear frame and the rear wheel assembly are connected through the rear axle tie rod device, the electric wheel and the speed changer in the rear wheel assembly can be prevented from rotating, and the rear suspension system can normally work. Because all the rear axle suspension cylinders on the same side are communicated, the pressure of all the rear axle suspension cylinders on the same side is the same, and the purpose of uniform loading of all the rear wheel assemblies on the same side is achieved. The rear suspension system is connected with the rear frame and the rear wheel assembly to form a split structure, a plurality of rear axle suspension seats are connected in a combined mode, and the rear suspension system is convenient to disassemble and assemble and maintain.
As a further improvement of the present invention, the upper swing arm assembly comprises an upper swing arm transverse shaft and an upper swing arm piece, the upper swing arm piece is of an i-shaped structure, the upper swing arm piece comprises two upper swing arm plates arranged in parallel, an upper swing arm connecting rod is arranged between the upper swing arm plates, and the number of the upper swing arm transverse shafts is two and is arranged between the two upper swing arm plates.
As a further improvement of the invention, a first connecting hole is arranged on the upper horizontal swing arm plate, a first joint bearing matched with one end of the transverse shaft of the upper horizontal swing arm is arranged in the first connecting hole, a first bearing end cover for covering the first connecting hole is arranged on the outward side surface of the upper horizontal swing arm plate, a second bearing end cover is arranged on the end surface of one end of the transverse shaft of the upper horizontal swing arm, a third bearing end cover for covering the first connecting hole is arranged on the inward side surface of the upper horizontal swing arm plate, the first bearing end cover and the third bearing end cover are fixed with the side surface of the upper horizontal swing arm plate in a bolt connection mode, a drain hole is arranged on the first bearing end cover, a sealing ring is arranged at the matching position of the third bearing end cover and the transverse shaft of the upper horizontal swing arm, and a step. The first bearing end cover, the second bearing end cover and the third bearing cover can prevent silt from entering the bearing working plane. The first bearing end cover is provided with a drain hole which can drain water entering the bearing. A step part is arranged at one end of the transverse shaft of the upper transverse swing arm, which is close to the first connecting hole, and is used for bearing longitudinal force generated by the forward and backward movement of the vehicle, so that the stability of the whole structure is ensured; meanwhile, the coaxiality of the left joint bearing and the right joint bearing is ensured, and the upper yaw arm assembly is convenient to disassemble and assemble.
As a further improvement of the invention, the third rear axle suspension seat and the fourth rear axle suspension seat are provided with connecting grooves matched with the transverse shaft of the upper transverse swing arm, the connecting grooves are of a square structure, and the matched part of the transverse shaft of the upper transverse swing arm and the connecting grooves is of a square structure.
As a further improvement of the invention, the lower transverse swing arm assembly comprises a lower transverse swing arm rod, a first lower transverse swing arm hole and a second lower transverse swing arm hole are respectively arranged at two ends of the lower transverse swing arm rod, a second joint bearing is arranged in the first lower transverse swing arm hole, a first swing arm pin shaft is arranged on the second joint bearing, a fourth bearing end cover for covering the first lower horizontal swing arm hole is arranged on the side surface of the lower horizontal swing arm rod, a sealing ring is arranged at the position of the first swing arm pin shaft and the fourth bearing end cover, the first swing arm pin shaft is matched with the fifth rear axle suspension seat, a rubber joint sleeve is arranged in the second lower transverse swing arm hole, a shaft sleeve is arranged in the rubber joint sleeve, a second swing arm pin shaft matched with the shaft sleeve is arranged on the shaft sleeve, the second swing arm pin shaft is matched with the second rear axle suspension seat, and a copper gasket is sleeved on the second swing arm pin shaft and is positioned between the second rear axle suspension seat and the shaft sleeve in a matching manner. The copper washer can guarantee that rubber joint cover both ends have certain installation clearance about, does not influence down the rotation of yaw arm subassembly around second swing arm round pin axle. Meanwhile, the copper washer is low in hardness, the rubber joint sleeve cannot be abraded, and the two ends of the rubber joint sleeve are prevented from being microcracked, so that the rubber joint sleeve is prevented from being damaged. The shaft sleeve avoids abrasion between the second swing arm pin shaft and the rubber joint sleeve, reduces friction between the second swing arm pin shaft and the rubber joint sleeve, and prolongs the service life of the second swing arm pin shaft and the rubber joint sleeve. The purpose of adopting the rubber joint sleeve is to adapt to errors generated by the suspension device and release the assembly internal force of the release structure of the suspension device, which is generated by manufacturing errors, so that the bearing capacity of the structure is improved and the service life of the joint is prolonged.
As a further improvement of the invention, a water drain hole and a water throwing groove are arranged on the fourth bearing end cover, the water drain hole is communicated with the water throwing groove, a bearing positioning sleeve is sleeved on the first swing arm pin shaft, and the bearing positioning sleeve is matched with the fourth bearing end cover.
The invention has the beneficial effects that: the rear wheel assembly has reasonable structural design, stable support and firm structure for the rear wheel assembly, and realizes the purpose of uniform loading of the rear wheel assemblies on the same side of the rear frame.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is an exploded view of the structure of the present invention.
Fig. 3 is a perspective view of another perspective view of the present invention.
Fig. 4 is a block diagram of the upper yaw arm assembly of the present invention.
Fig. 5 is a perspective view of the upper yaw arm assembly of the present invention.
Fig. 6 is a block diagram of the lower yaw arm assembly of the present invention.
Fig. 7 is a block diagram of the lower yaw arm lever of the lower yaw arm assembly of the present invention.
Detailed Description
As shown in the figures 1 to 7, the invention comprises a rear frame 1 and a plurality of rear wheel assemblies 2, wherein the total number of the rear wheel assemblies 2 is more than or equal to 4, and more than two rear wheel assemblies 2 are respectively arranged on each side of the frame; a rear suspension system is arranged between the rear frame 1 and the rear wheel assembly 2; the rear suspension system comprises a rear axle suspension device and a rear axle transverse pull rod device, the rear axle transverse pull rod device comprises an upper transverse swing arm component and a lower transverse swing arm component, the number of the lower transverse swing arm components is two, the lower transverse swing arm components are symmetrically arranged relative to the upper transverse swing arm component, the number of the rear axle suspension devices is two, the rear axle suspension devices are symmetrically arranged relative to the rear axle transverse pull rod device, the rear axle suspension device comprises a first rear axle suspension seat 3, a second rear axle suspension seat 4, a third rear axle suspension seat 5, a fourth rear axle suspension seat 6, a fifth rear axle suspension seat 7 and a rear axle suspension cylinder component 8, the first rear axle suspension seat 3, the second rear axle suspension seat 4 and the third rear axle suspension seat 5 are arranged on a rear frame 1, the first rear axle suspension seat 3 is arranged above the second rear axle suspension seat 4, the fourth rear axle suspension seat 6 and the fifth rear axle suspension seat 7 are arranged on a rear wheel assembly 2, and the fourth rear axle suspension seat 6 is arranged above the fifth rear axle suspension seat 7, one end of a rear axle suspension cylinder assembly 8 is arranged on the rear wheel assembly 2, the other end of the rear axle suspension cylinder assembly 8 is hinged with a first rear axle suspension base 3, the upper swing arm assembly comprises an upper swing arm transverse shaft 9 and an upper swing arm member, the upper swing arm member is of an I-shaped structure, the upper swing arm member comprises two upper swing arm plates 10 which are arranged in parallel, an upper swing arm connecting rod 11 is arranged between the upper swing arm plates 10, the number of the upper swing arm transverse shafts 9 is two and is arranged between the two upper swing arm plates 10, a first connecting hole 12 is arranged on each upper swing arm plate 10, a first joint bearing 13 matched with one end of the upper swing arm transverse shaft 9 is arranged in each first connecting hole 12, a first bearing end cover 14 covering the first connecting hole 12 is arranged on the outward side surface of each upper swing arm plate 10, a second bearing end cover 15 is arranged on the end surface of one end of each upper swing arm transverse shaft 9, a third bearing end cover 16 covering the first connecting hole 12 is arranged on the inward side surface, the first bearing end cover 14 and the third bearing end cover 16 are fixed with the side surface of the upper horizontal swing arm plate 10 by a bolt connection mode, a drain hole 17 is arranged on the first bearing end cover 14, a sealing ring 18 is arranged at the matching position of the third bearing end cover 16 and the upper horizontal swing arm transverse shaft 9, a step part 19 is arranged at one end of the upper horizontal swing arm transverse shaft 9 close to the first connecting hole 12, a connecting groove 20 matched with the upper horizontal swing arm transverse shaft 9 is arranged on the third rear axle suspension seat 5 and the fourth rear axle suspension seat 6, the connecting groove 20 is of a square structure, the matching position of the upper horizontal swing arm transverse shaft 9 and the connecting groove 20 is of a square structure, the lower horizontal swing arm assembly comprises a lower horizontal swing arm rod 21, a first lower horizontal swing arm hole 22 and a second lower horizontal swing arm hole 23 are respectively arranged at the two ends of the lower horizontal swing arm rod 21, a second joint bearing 24 is arranged in the first lower horizontal swing, a fourth bearing end cover 26 which covers the first lower horizontal swinging arm hole 22 is arranged on the side surface of the lower horizontal swinging arm rod 21, a sealing ring 18 is arranged at the position of the first swing arm pin shaft 25 and the fourth bearing end cover 26, the first swing arm pin shaft 25 is matched with the fifth rear axle suspension seat 7, a threaded cylindrical pin 33 is arranged at the joint of the first swing arm pin shaft 25 and the fifth rear axle suspension seat 7, a rubber joint sleeve 27 is arranged in the second lower horizontal swinging arm hole 23, a shaft sleeve 28 is arranged in the rubber joint sleeve 27, a matched second swing arm pin shaft 29 is arranged on the shaft sleeve 28, the second swing arm pin shaft 29 is matched with the second rear axle suspension seat 4, a threaded cylindrical pin 33 is arranged at the joint of the second swing arm pin shaft 29 and the second rear axle suspension seat 4, a copper washer 30 is sleeved on the second swing arm pin shaft 29, the copper washer 30 is arranged between the second rear axle suspension seat 4 and the shaft sleeve 28, a water drainage hole 17 and a water throwing groove 31 are arranged on the fourth bearing end cover 26, the water drain hole 17 is communicated with the water throwing groove 31, a bearing positioning sleeve 32 is sleeved on the first swing arm pin shaft 25, and the bearing positioning sleeve 32 is matched with the fourth bearing end cover 26.
The invention has the beneficial effects that: the force of the rear wheel assembly 2 is mainly transmitted to the rear frame 1 through rear axle suspension cylinders on two sides of a rear axle tie rod device. In the invention, the two sides of the rear axle tie rod device are respectively provided with the rear axle suspension cylinders which are symmetrically arranged to support the rear wheel assembly 2 at two points, so that the rear wheel assembly 2 is stressed more uniformly and has good stability, and the rotation of the rear wheel assembly 2 can be effectively prevented by the two suspension cylinders. In the present invention, the rear wheel assembly 2 is mainly composed of an electric wheel, a transmission, a hub and a wheel, and the electric wheel and the transmission are not rotated with respect to the rear frame 1 and the hub and the wheel are rotatable with respect to the electric wheel regardless of whether the rear wheel assembly 2 is in an operating state or a non-operating state, so that the rear frame 1 and the rear wheel assembly 2 are connected by the rear axle tie rod device, the electric wheel and the transmission in the rear wheel assembly 2 can be prevented from rotating, and the rear suspension system can normally operate. Because all the rear axle suspension cylinders on the same side are communicated, the pressure of all the rear axle suspension cylinders on the same side is the same, and the purpose of uniform loading of all the rear wheel assemblies 2 on the same side is achieved. The rear suspension system is connected with the rear frame 1 and the rear wheel assembly 2 in a split structure, adopts a plurality of rear axle suspension seats to be combined and connected, is convenient to disassemble and assemble and is convenient to assemble and maintain. The first bearing end cap 14, the second bearing end cap 15 and the third bearing end cap prevent silt from entering the bearing working plane. The first bearing end cap 14 is provided with a drain hole 17 for draining water entering the interior of the bearing. A step part 19 is arranged at one end of the transverse shaft 9 of the upper transverse swing arm, which is close to the first connecting hole 12, and is used for bearing longitudinal force generated by the forward and backward movement of the vehicle, so that the stability of the whole structure is ensured; meanwhile, the coaxiality of the left joint bearing and the right joint bearing is ensured, and the upper yaw arm assembly is convenient to disassemble and assemble. The copper washer 30 can ensure that the left end and the right end of the rubber joint sleeve 27 have certain installation gaps, and the rotation of the lower yaw arm assembly around the second swing arm pin shaft 29 is not influenced. Meanwhile, the copper washer 30 has low hardness, so that the rubber joint sleeve 27 cannot be abraded, and the two ends of the rubber joint sleeve 27 are prevented from generating micro cracks, so that the rubber joint sleeve 27 is prevented from being damaged. The shaft sleeve 28 prevents the second swing arm pin 29 from being worn by the rubber joint sleeve 27, reduces the friction between the second swing arm pin 29 and the rubber joint sleeve 27, and prolongs the service life of the second swing arm pin 29 and the rubber joint sleeve 27. The purpose of using the rubber knuckle sleeve 27 is to accommodate errors generated by the suspension device and release the assembly internal force of the suspension device release structure due to manufacturing errors, thereby improving the bearing capacity of the structure and the service life of the knuckle. Threaded cylindric lock 33 mainly resists round pin axle pivoted shearing force, prevents the shearing force that the construction bolt received, and the bolt of installing in cylindric lock 33 department is the technology use, prevents that silt from getting into cylindric lock 33 and causing the corruption and can not dismantle.
This application compares the advantage of above-mentioned application:
1. compared with the prior art, the bearing capacity of the structure is larger, and the stress of the suspension device node is better.
2. The rubber node is arranged after the connection, so that the manufacturing error is well compensated, and the internal force of the assembly is reduced.
3. The upper transverse swing arm is quickly and conveniently disassembled.
4. The improved bearing inner ring is completely fixed through the step on the pin shaft and the bearing retaining ring, the condition that the bearing inner ring slides relative to the pin shaft cannot exist, and cracks caused by sliding cannot be generated on the inner ring.
5. The longitudinal force of the upper transverse swing arm is carried by the upper transverse swing arm than the transverse shaft structure, so that the bearing is prevented from bearing the longitudinal force.
6. The improved bearing is provided with a sealing structure and a drainage groove, so that the damage of silt and rainwater to the working surface of the bearing is avoided. The service life of the bearing is prolonged.
7. The structure that the pin shaft prevents rotation after being changed is more effective, and the condition that the pin shaft is difficult to rotate appears. And the problem of loosening of the nut for loosening the pin shaft can be solved.
8. The service life of the improved bearing is greatly prolonged, and the bearing is replaced once in 2 to 3 years.
9. After the replacement, the replacement of the bearing is reduced from 5 to 6 times per year to 2 to 3 times per year. The maintenance costs of the entire suspension structure are reduced.
Claims (4)
1. A rear axle suspension system of a dumper comprises a rear frame and a plurality of rear wheel assemblies, wherein the total number of the rear wheel assemblies is more than or equal to 4, and more than two rear wheel assemblies are respectively arranged on each side of the frame; the method is characterized in that: a rear suspension system is arranged between the rear frame and the rear wheel assembly; the rear suspension system comprises a rear axle suspension device and a rear axle transverse pull rod device, the rear axle transverse pull rod device comprises an upper transverse swing arm assembly and a lower transverse swing arm assembly, the number of the lower transverse swing arm assemblies is two, the lower transverse swing arm assemblies are symmetrically arranged relative to the upper transverse swing arm assembly, the number of the rear axle suspension devices is two, the rear axle suspension devices are symmetrically arranged relative to the rear axle transverse pull rod device, the rear axle suspension device comprises a first rear axle suspension seat, a second rear axle suspension seat, a third rear axle suspension seat, a fourth rear axle suspension seat, a fifth rear axle suspension seat and a rear axle suspension cylinder assembly, the first rear axle suspension seat, the second rear axle suspension seat and the third rear axle suspension seat are arranged on a rear frame, the first rear axle suspension seat is arranged above the second rear axle suspension seat, the fourth rear axle suspension seat and the fifth rear axle suspension seat are arranged on a rear wheel assembly, and the fourth rear axle suspension seat is arranged above the fifth rear axle suspension seat, one end of the rear axle suspension cylinder assembly is arranged on the rear wheel assembly, the other end of the rear axle suspension cylinder assembly is hinged with the first rear axle suspension seat, one end of the lower horizontal swinging arm assembly is hinged with the second rear axle suspension seat, the other end of the lower horizontal swinging arm assembly is hinged with the fifth rear axle suspension seat, one end of the upper horizontal swinging arm assembly is connected with the third rear axle suspension seat, and the other end of the upper horizontal swinging arm assembly is connected with the fourth rear axle suspension seat;
the upper transverse swing arm assembly comprises an upper transverse swing arm transverse shaft and an upper transverse swing arm piece, the upper transverse swing arm piece is of an I-shaped structure, the upper transverse swing arm piece comprises two upper transverse swing arm plates which are arranged in parallel, an upper transverse swing arm connecting rod is arranged between the upper transverse swing arm plates, and the number of the upper transverse swing arm transverse shafts is two and the two upper transverse swing arm plates are arranged between the two upper transverse swing arm plates;
the first connecting hole is formed in the upper horizontal swing arm plate, a first joint bearing matched with one end of the transverse shaft of the upper horizontal swing arm is arranged in the first connecting hole, a first bearing end cover covering the first connecting hole is arranged on the outward side face of the upper horizontal swing arm plate, a second bearing end cover is arranged on the end face of one end of the transverse shaft of the upper horizontal swing arm, a third bearing end cover covering the first connecting hole is arranged on the inward side face of the upper horizontal swing arm plate, the first bearing end cover and the third bearing end cover are fixed with the side face of the upper horizontal swing arm plate in a bolt connection mode, a drain hole is formed in the first bearing end cover, a sealing ring is arranged at the matching position of the third bearing end cover and the transverse shaft of the upper horizontal swing arm, and a step portion is.
2. The dump truck rear axle suspension system according to claim 1 wherein: and the third rear axle suspension seat and the fourth rear axle suspension seat are provided with connecting grooves matched with the transverse shaft of the upper transverse swing arm, the connecting grooves are of square structures, and the matching part of the transverse shaft of the upper transverse swing arm and the connecting grooves is of a square structure.
3. The dump truck rear axle suspension system according to claim 1 wherein: the lower transverse swing arm assembly comprises a lower transverse swing arm rod, a first lower transverse swing arm hole and a second lower transverse swing arm hole are formed in the two ends of the lower transverse swing arm rod respectively, a second joint bearing is arranged in the first lower transverse swing arm hole, a first swing arm pin shaft is arranged on the second joint bearing, a fourth bearing end cover which covers the first lower transverse swing arm hole is arranged on the side face of the lower transverse swing arm rod, a sealing ring is arranged at the positions of the first swing arm pin shaft and the fourth bearing end cover, the first swing arm pin shaft is matched with a fifth rear axle suspension seat, a rubber joint sleeve is arranged in the second lower transverse swing arm hole, a shaft sleeve is arranged in the rubber joint sleeve, a second swing arm pin shaft which is matched with the shaft sleeve is arranged on the shaft sleeve, the second swing arm pin shaft is matched with a second rear axle suspension seat, a copper gasket is sleeved on the second swing arm pin shaft, and the copper gasket is.
4. The dump truck rear axle suspension system according to claim 3 wherein: the fourth bearing end cover is provided with a drain hole and a water throwing groove, the drain hole is communicated with the water throwing groove, the first swing arm pin shaft is sleeved with a bearing positioning sleeve, and the bearing positioning sleeve is matched with the fourth bearing end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041189.3A CN109177670B (en) | 2018-09-07 | 2018-09-07 | Rear axle suspension system of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041189.3A CN109177670B (en) | 2018-09-07 | 2018-09-07 | Rear axle suspension system of dump truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109177670A CN109177670A (en) | 2019-01-11 |
| CN109177670B true CN109177670B (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811041189.3A Active CN109177670B (en) | 2018-09-07 | 2018-09-07 | Rear axle suspension system of dump truck |
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| CN (1) | CN109177670B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111169241B (en) * | 2020-03-03 | 2023-09-19 | 湖南天开智能装备有限公司 | Trolley chassis with wheels independently driven |
| CN113305153B (en) * | 2021-05-31 | 2023-06-23 | 安徽马钢重型机械制造有限公司 | Fixed-width press pull rod device of plate strip hot rolling line |
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| CN206765730U (en) * | 2017-02-24 | 2017-12-19 | 浙江春风动力股份有限公司 | A kind of beach buggy and its rear arm bearing Mounting device |
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| CN105270121A (en) * | 2015-11-10 | 2016-01-27 | 广州电力机车有限公司 | Free wheel rear suspension system for dumper |
| CN106515333A (en) * | 2016-11-18 | 2017-03-22 | 徐州重型机械有限公司 | Installing structure of independent suspension system |
| CN107264219A (en) * | 2017-07-12 | 2017-10-20 | 徐州徐工矿山机械有限公司 | A kind of mine car rear suspension assembly |
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| CN109177670A (en) | 2019-01-11 |
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