CN105270121A

CN105270121A - Free wheel rear suspension system for dumper

Info

Publication number: CN105270121A
Application number: CN201510759900.9A
Authority: CN
Inventors: 蒋宽; 李涛; 林羽; 周逛; 廖宝江; 罗朋; 王卓周; 石能芳
Original assignee: Guangzhou Electrical Locomotive Co Ltd
Current assignee: Guangzhou Electrical Locomotive Co Ltd
Priority date: 2015-11-10
Filing date: 2015-11-10
Publication date: 2016-01-27
Anticipated expiration: 2035-11-10
Also published as: CN105270121B

Abstract

The invention discloses a free wheel rear suspension system for a dumper. The free wheel rear suspension system for the dumper comprises a rear frame and a plurality of rear wheel assemblies, wherein a rear suspension system is arranged among the rear frame and the rear wheel assemblies; the rear suspension systems comprise rear axle suspension devices and rear axle tie rod devices; the rear axle suspension devices comprise first rear axle suspension seats, second rear axle suspension seats, rear axle suspension cylinders, first rear axle diagonal draw bar seats, second rear axle diagonal draw bar seats and diagonal draw bars; each rear axle tie rod device comprises a rear axle tie rod, two first rear axle tie rod seats and two second rear axle tie rod seats; and all rear axle suspension cylinders on the same side of the rear frame communicate with each other. According to the invention, the rear wheel assemblies are stably supported so that the rear wheel assemblies can be prevented from rotating to realize uniform loads of the rear wheel assemblies on the same side of the rear frame.

Description

A kind of dumping car mechanism of independent wheel rear suspension system

Technical field

The present invention relates to dumping car, especially suspension.

Background technology

At 2013.10.25, applicant has applied for that a key name is called a kind of utility model patent of articulated truck equalizing bar, disclose articulated truck primarily of compositions such as vehicle frame, front axle assy, back axle assembly, operator's compartment, containers in this patent documentation.Vehicle frame is made up of front vehicle frame and Rear frame, hinged by hinged seat between front vehicle frame and Rear frame.Front axle assy is arranged in front vehicle frame, and back axle assembly is arranged in Rear frame by equalizing bar, and operator's compartment is supported by front vehicle frame, and the rear end of container is hinged in Rear frame.Back axle assembly forms primarily of electric drive wheel, change-speed box and wheel.In this patent documentation, back axle assembly is rigidly attached on the axle of Rear frame by equalizing bar, in use find, the serious vibration of whole articulated truck, time has been grown, and finds that there is crack throughout, and bolt easily loosens, even there will be bolt by the phenomenon of cutting off, easily occur potential safety hazard.In addition, each wheel is all independently, and all for being rigidly connected, is difficult to the object realizing all carrying.

Be 201410081634.4 applyings date be 2014.3.7 publication date in Chinese Patent Application No. be the rear suspension system disclosing a kind of wide dumper in the patent documentation of 2014.5.21, belong to haul truck technical field; Be characterized in: equalizing suspension system support is connected with vehicle frame by drawbar frame, Rear suspended cylinder, lateral connecting rod, ensure that equalizing suspension system can only be moved in vertical direction, and the power that equalizing suspension system support is subject to is passed to vehicle frame; Jackshaft, back axle are connected with equalizing suspension system support by front longitudinal tie, rear longitudinal tie, equalizing bar, front lateral connecting rod, rear lateral connecting rod, and the power that in guarantee, back axle is subject to can pass to equalizing suspension system support, and in ensureing, back axle is stressed equal; Rear suspended cylinder is fixed by the thrust of jam nut, but not by interference fit, is convenient to install; This structure and steel spring structure comparison, its advantage is that the load-carrying capacity of suspension cylinder is greater than steel spring, and there is not friction pair in whole system, therefore it can to solve current wide dumper rear-mounted fault rate high, be difficult to the difficult problem toward large-tonnage development.In the structure shown here, jackshaft, back axle, front longitudinal tie, rear longitudinal tie, equalizing bar, balance shaft, front lateral connecting rod, rear lateral connecting rod and balance suspension holdfast are holistic structure, this integral structure is connected with vehicle frame with suspension cylinder by lateral connecting rod, on jackshaft and back axle after equal installing wheel, in order to travel on rugged road surface, jackshaft, back axle, front longitudinal tie, rear longitudinal tie, equalizing bar, front lateral connecting rod and rear lateral connecting rod are wanted to rotate a certain angle around balance shaft, therefore, in the same side of vehicle frame, adopt a suspension cylinder just can better adapt to above-mentioned mode of operation, but the less stable of a suspension cylinder, and need suspension cylinder to have larger carrying force, in addition, for above-mentioned suspension, be difficult to realize respectively take turns the object of all carrying.

Summary of the invention

The object of this invention is to provide a kind of dumping car mechanism of independent wheel rear suspension system, utilize system of the present invention, to the supporting stabilizer of rear wheel assembly, can prevent rear wheel assembly from rotating, realize the object that each rear wheel assembly in Rear frame the same side all carries.

For achieving the above object, a kind of dumping car mechanism of independent wheel rear suspension system, comprises Rear frame and a plurality of rear wheel assembly, and wherein, sum >=4 of rear wheel assembly, are respectively equipped with the rear wheel assembly of more than two in every side of vehicle frame; Rear suspension system is provided with between Rear frame and rear wheel assembly; Described rear suspension system comprises resilient suspension and back axle intermediate rod device, is respectively equipped with described resilient suspension at the two ends of back axle intermediate rod device, and two resilient suspensions are arranged symmetrically with relative to back axle intermediate rod device; Described resilient suspension comprises the first Rear-axle suspension seat, the second Rear-axle suspension seat, Rear-axle suspension cylinder, the first back axle oblique pull pole socket, the second back axle oblique pull pole socket and digonal link; First Rear-axle suspension seat is fixed in Rear frame, and the second Rear-axle suspension seat is fixed on rear wheel assembly, and the upper end thereof of Rear-axle suspension cylinder is on the first Rear-axle suspension seat, and the lower end of Rear-axle suspension cylinder is hinged on the second Rear-axle suspension seat; First back axle oblique pull pole socket is fixed in Rear frame, second back axle oblique pull pole socket is fixed on rear wheel assembly, digonal link is hinged between the first back axle oblique pull pole socket and the second back axle oblique pull pole socket, and digonal link is from the oblique extension of central axial direction of the first back axle oblique pull pole socket wheel assembly backward; Back axle intermediate rod device comprises back axle intermediate rod, two the first back axle intermediate rod seats, two the second back axle intermediate rod seats; Described back axle intermediate rod comprises transverse slat and is located at the connecting panel at transverse slat two ends respectively; Two first back axle intermediate rod seats are arranged symmetrically with relative to back axle intermediate rod, and two second back axle intermediate rod seats are arranged symmetrically with relative to back axle intermediate rod, and the first back axle intermediate rod seat is fixed in Rear frame, and the second back axle intermediate rod seat is fixed on back axle assembly; Connecting panel is hinged with the first back axle intermediate rod seat of one end and the second back axle intermediate rod seat; The all Rear-axle suspension cylinders being positioned at Rear frame the same side are connected.

Above-mentioned dumping car mechanism of independent wheel rear suspension system, the power of rear wheel assembly is delivered in Rear frame mainly through the Rear-axle suspension cylinder of back axle intermediate rod device both sides.In the present invention, the both sides of back axle intermediate rod device are provided with Rear-axle suspension cylinder respectively, and are arranged symmetrically with, be two dot point to rear wheel assembly, allow the stressed more even of rear wheel assembly, stationarity is good, and prevents rear wheel assembly from rotating by two suspension cylinder energy actvies.In the present invention, rear wheel assembly forms primarily of electric drive wheel, change-speed box, wheel hub and wheel, no matter rear wheel assembly in working order or off working state, electric drive wheel and change-speed box are non-rotary relative to Rear frame, wheel hub and wheel rotatable relative to electric drive wheel, therefore, by back axle intermediate rod device, Rear frame and rear wheel assembly are coupled together, can prevent the electric drive wheel in rear wheel assembly, change-speed box from rotating, allow rear suspension system normally work.Because all Rear-axle suspension cylinders in the same side are connected, make the pressure of all Rear-axle suspension cylinders of the same side identical, realize the object that each rear wheel assembly in the same side all carries.

Further, the first described Rear-axle suspension seat extends laterally, and the middle part K/UP of the first Rear-axle suspension seat is curved; First Rear-axle suspension seat comprises the first Rear-axle suspension seat back plate and the first Rear-axle suspension seat gusset, first Rear-axle suspension seat back plate extends bending rear horizontal-extending obliquely from Rear frame, first Rear-axle suspension seat back plate reduces gradually from the outside cross section of Rear frame, has the first connecting portion between the both sides of the first Rear-axle suspension seat back plate and Rear frame; Two the first Rear-axle suspension seat gussets are had at the bottom welding of the first Rear-axle suspension seat back plate, space is formed between two first Rear-axle suspension seat gussets, the first mounting hole is provided with in the outer end of the first Rear-axle suspension seat gusset, the first boss is respectively equipped with in the both sides of the first Rear-axle suspension seat gusset, first boss has the first perforation, and the first perforation is coaxial with the first mounting hole.For the first Rear-axle suspension seat, it is mainly subject to vertical power, and the first Rear-axle suspension seat is curved, makes the mechanical property of the first Rear-axle suspension seat better, improves the strength and stiffness of the first Rear-axle suspension seat.Be provided with the first connecting portion, make the connection area of the first Rear-axle suspension seat back plate and Rear frame large, thus improve Joint strenght.

Further, the second described Rear-axle suspension seat comprises the second adapter plate and the second engaging lug, second adapter plate is fixed on rear wheel assembly, second adapter plate is welded with two the second engaging lugs be parallel to each other, second engaging lug comprises the second connecting portion and the second support, the cross section of the second connecting portion is greater than the cross section of the second support, second connecting portion is welded on the second adapter plate, second support is curved, the tail end of the second support is provided with the second mounting hole, the second boss is respectively equipped with in the both sides of the second support, second boss has the second perforation, second perforation is coaxial with the second mounting hole.Utilize the second adapter plate to be conveniently fixed on rear wheel assembly by the second Rear-axle suspension seat, the cross section because of the second connecting portion is greater than the second support, and therefore, the joint face of the second engaging lug and the second adapter plate is large, improves Joint strenght.

Further, between Rear-axle suspension cylinder and the first Rear-axle suspension seat, be provided with the first articulated mounting, between Rear-axle suspension cylinder and the second Rear-axle suspension seat, be provided with the second articulated mounting; The first described articulated mounting comprises clutch shaft bearing, the first bearing pin, the first nut, the first stainless steel gasket, clutch shaft bearing back-up ring and the first snap ring; The upper end of Rear-axle suspension cylinder is provided with the first knock hole, first knock hole is that the first via hole, the first accommodating hole and first communicated successively dodges hole, the diameter of the first accommodating hole is greater than the diameter of the first via hole, the first small stair face is formed between first accommodating hole and the first through hole, first diameter of dodging hole is greater than the diameter of the first accommodating hole, and first dodges between hole and the first accommodating hole and be formed with first step surface; Clutch shaft bearing is arranged in the first accommodating hole, the outer ring of clutch shaft bearing and the first accommodating hole interference fit, the outer ring of a clutch shaft bearing wherein end face is kept out by the first small stair face, dodge hole first and be provided with the first draw-in groove near first step surface, first draw-in groove is equipped with the first described snap ring, and the first snap ring withstands the other end of the outer ring of clutch shaft bearing; First bearing pin is through the first Rear-axle suspension seat gusset, the first boss and clutch shaft bearing, one end of first bearing pin has first head, first head contacts with the first boss wherein, first nut is engaged on the first bearing pin, first stainless steel gasket is located at the first nut and wherein between the first boss, the first bearing pin overlaps between the first boss and clutch shaft bearing and has clutch shaft bearing back-up ring; The second described articulated mounting comprises the second bearing, the second bearing pin, the second nut, the second stainless steel gasket, the second end ring and the second snap ring; The lower end of Rear-axle suspension cylinder is provided with the second knock hole, second knock hole is that the second via hole, the second accommodating hole and second communicated successively dodges hole, the diameter of the second accommodating hole is greater than the diameter of the second via hole, the second small stair face is formed between second accommodating hole and the second through hole, second diameter of dodging hole is greater than the diameter of the second accommodating hole, and second dodges between hole and the second accommodating hole and be formed with second largest step surface; Second bearing is arranged in the second accommodating hole, the outer ring of the second bearing and the second accommodating hole interference fit, the outer ring of a second bearing wherein end face is kept out by the second small stair face, dodge hole second and be provided with the second draw-in groove near second largest step surface, second draw-in groove is equipped with the second described snap ring, and the second snap ring withstands the other end of the outer ring of the second bearing; Second bearing pin is through the second support, the second boss and the second bearing, one end of second bearing pin has second largest head, second largest head contacts with the second boss wherein, second nut is engaged on the second bearing pin, second stainless steel gasket is located at the second nut and wherein between one second boss, the second bearing pin overlaps between the second boss and the second bearing and has the second end ring.

Adopt above-mentioned first articulated mounting, because the first knock hole is the first via hole communicated successively, first accommodating hole and first dodges hole, the diameter of the first accommodating hole is greater than the diameter of the first via hole, first diameter of dodging hole is greater than the diameter of the first accommodating hole, when installing clutch shaft bearing, dodging hole through first is pressed in the first accommodating hole by clutch shaft bearing, first to dodge the gap of hole and clutch shaft bearing large, because this reducing when clutch shaft bearing is pressed into and the distance of the first knock hole cliding friction, more easily clutch shaft bearing is installed, after clutch shaft bearing is in place, by the first small stair face and the first snap ring, axial limiting is carried out to clutch shaft bearing, improve the reliability that clutch shaft bearing is installed to the first knock hole, owing to being provided with the first boss, therefore, the intensity of the first Rear-axle suspension seat gusset is higher.Adopt above-mentioned second articulated mounting, because the second knock hole is the second via hole communicated successively, second accommodating hole and second dodges hole, the diameter of the second accommodating hole is greater than the diameter of the second via hole, second diameter of dodging hole is greater than the diameter of the second accommodating hole, when installation the second bearing, dodging hole through second is pressed in the second accommodating hole by the second bearing, second to dodge the gap of hole and the second bearing large, because this reducing when the second bearing is pressed into and the distance of the second knock hole cliding friction, second bearing is more easily installed, after second bearing is in place, by the second small stair face and the second snap ring, axial limiting is carried out to the second bearing, improve the reliability that the second bearing is installed to the second knock hole, owing to being provided with the second boss, therefore, the intensity of the second support is higher.

Further, first back axle oblique pull pole socket comprises two the first back axle digonal link back plates be parallel to each other, first back axle digonal link back plate is provided with the 3rd mounting hole, the 3rd boss is respectively equipped with in the both sides of the first back axle digonal link back plate, 3rd boss is provided with the 3rd perforation, 3rd perforation is coaxial with the 3rd mounting hole, and the 3rd boss can improve the intensity of the first back axle digonal link back plate.

Further, second back axle oblique pull pole socket comprises the 4th adapter plate and the 4th back plate, 4th adapter plate is fixed on rear wheel assembly, 4th adapter plate is welded with two the 4th back plates, 4th back plate is provided with the 4th mounting hole, be respectively equipped with the 4th boss in the both sides of the 4th back plate, the 4th boss is provided with the 4th perforation, and the 4th perforation is coaxial with the 4th mounting hole.4th boss can improve the intensity of the 4th back plate.

Further, between digonal link and the first back axle oblique pull pole socket, be provided with the 3rd articulated mounting, between digonal link and the second back axle oblique pull pole socket, be provided with the 4th articulated mounting; The 3rd described articulated mounting comprises the 3rd bearing, the 3rd bearing pin, the 3rd nut, the 3rd stainless steel gasket, the 3rd end ring and the 3rd snap ring; One end of digonal link is provided with the 3rd knock hole, 3rd knock hole is that the 3rd via hole, the 3rd accommodating hole and the 3rd communicated successively dodges hole, the diameter of the 3rd accommodating hole is greater than the diameter of the 3rd via hole, 3rd is formed with the 3rd small stair face between accommodating hole and third through-hole, 3rd diameter of dodging hole is greater than the diameter of the 3rd accommodating hole, and the 3rd dodges between Kong Yu tri-accommodating hole and be formed with the third-largest step surface; 3rd bearing is arranged in the 3rd accommodating hole, the outer ring of the 3rd bearing and the 3rd accommodating hole interference fit, the outer ring of a 3rd bearing wherein end face is kept out by the 3rd small stair face, dodge hole the 3rd and be provided with the 3rd draw-in groove near the third-largest step surface, 3rd draw-in groove is equipped with the 3rd described snap ring, and the 3rd snap ring withstands the other end of the outer ring of the 3rd bearing; 3rd bearing pin is through the first back axle digonal link supporting, the 3rd boss and the 3rd bearing, one end of 3rd bearing pin has the third-largest head, the third-largest head contacts with the 3rd boss wherein, 3rd nut is engaged on the 3rd bearing pin, 3rd stainless steel gasket is located at the 3rd nut and wherein between the 3rd boss, the 3rd bearing pin overlaps between the 3rd boss and the 3rd bearing and has the 3rd end ring; The 4th described articulated mounting comprises the 4th bearing, the 4th bearing pin, the 4th nut, the 4th stainless steel gasket, the 4th end ring and the 4th snap ring; The other end of digonal link is provided with the 4th knock hole, 4th knock hole is that the 4th via hole, the 4th accommodating hole and the 4th communicated successively dodges hole, the diameter of the 4th accommodating hole is greater than the diameter of the 4th via hole, 4th is formed with the 4th small stair face between accommodating hole and fourth hole, 4th diameter of dodging hole is greater than the diameter of the 4th accommodating hole, and the 4th dodges between Kong Yu tetra-accommodating hole and be formed with the fourth-largest step surface; 4th bearing is arranged in the 4th accommodating hole, the outer ring of the 4th bearing and the 4th accommodating hole interference fit, the outer ring of a 4th bearing wherein end face is kept out by the 4th small stair face, dodge hole the 4th and be provided with the 4th draw-in groove near the fourth-largest step surface, 4th draw-in groove is equipped with the 4th described snap ring, and the 4th snap ring withstands the other end of the outer ring of the 4th bearing; 4th bearing pin is through the 4th back plate, the 4th boss and the 4th bearing, one end of 4th bearing pin has the fourth-largest head, the fourth-largest head contacts with the 4th boss wherein, 4th nut is engaged on the 4th bearing pin, 4th stainless steel gasket is located at the 4th nut and wherein between one the 4th boss, the 4th bearing pin overlaps between the 4th boss and the 4th bearing and has the 4th end ring.

Adopt above-mentioned 3rd articulated mounting, because the 3rd knock hole is the 3rd via hole communicated successively, 3rd accommodating hole and the 3rd dodges hole, the diameter of the 3rd accommodating hole is greater than the diameter of the 3rd via hole, 3rd diameter of dodging hole is greater than the diameter of the 3rd accommodating hole, when installation the 3rd bearing, dodging hole through the 3rd is pressed in the 3rd accommodating hole by the 3rd bearing, 3rd to dodge the gap of Kong Yu tri-bearing large, because this reducing when the 3rd bearing is pressed into and the distance of the 3rd knock hole cliding friction, more easily the 3rd bearing is installed, after 3rd bearing is in place, by the 3rd small stair face and the 3rd snap ring, axial limiting is carried out to the 3rd bearing, improve the reliability that the 3rd bearing is installed to the 3rd knock hole.Adopt above-mentioned 4th articulated mounting, because the 4th knock hole is the 4th via hole communicated successively, 4th accommodating hole and the 4th dodges hole, the diameter of the 4th accommodating hole is greater than the diameter of the 4th via hole, 4th diameter of dodging hole is greater than the diameter of the 4th accommodating hole, when installation the 4th bearing, dodging hole through the 4th is pressed in the 4th accommodating hole by the 4th bearing, 4th to dodge the gap of Kong Yu tetra-bearing large, because this reducing when the 4th bearing is pressed into and the distance of the 4th knock hole cliding friction, more easily the 4th bearing is installed, after 4th bearing is in place, by the 4th small stair face and the 4th snap ring, axial limiting is carried out to the 4th bearing, improve the reliability that the 4th bearing is installed to the 4th knock hole.

Further, first back axle intermediate rod seat comprises the first fixed support and the first back axle intermediate rod seat back plate, first fixed support comprises lateral connection portion and side connecting portion, and lateral connection portion is fixed on the end face of Rear frame, and side connecting portion is fixed on the side of Rear frame; First fixed support is provided with two the first back axle intermediate rod seat back plates be parallel to each other, first back axle intermediate rod seat back plate is provided with the 5th mounting hole, the 5th boss is respectively equipped with in the both sides of the first back axle intermediate rod seat back plate, 5th boss is provided with the 5th perforation, and the 5th perforation is coaxial with the 5th mounting hole.First fixed support comprises lateral connection portion and side connecting portion, allows the first fixed support all be connected with two faces of Rear frame, and the area not only connected is large, and lateral connection portion and side connecting portion are in being arranged vertically, and carries out better spacing to the first fixed support.Be provided with the 5th boss, improve the intensity of the first back axle intermediate rod back plate.

Further, the second back axle intermediate rod seat comprises the second fixed support and the second back axle intermediate rod seat back plate; First fixed support is provided with two the second back axle intermediate rod seat back plates be parallel to each other, second back axle intermediate rod seat back plate is provided with the 6th mounting hole, the both sides of bridge intermediate rod seat back plate are respectively equipped with the 6th boss in the second rear, 6th boss is provided with the 6th perforation, and the 6th perforation is coaxial with the 6th mounting hole.6th boss improves the intensity of the second back axle intermediate rod seat back plate.

Further, between connecting panel and the first back axle intermediate rod seat, be provided with the 5th articulated mounting, between connecting panel and the second back axle intermediate rod seat, be provided with the 6th articulated mounting; The 5th described articulated mounting comprises the 5th bearing, the 5th bearing pin, the 5th nut, the 5th stainless steel gasket, the 5th end ring and the 5th snap ring; One end of connecting panel is provided with the 5th knock hole, 5th knock hole is that the 5th via hole, the 5th accommodating hole and the 5th communicated successively dodges hole, the diameter of the 5th accommodating hole is greater than the diameter of the 5th via hole, 5th is formed with the 5th small stair face between accommodating hole and fifth hole, 5th diameter of dodging hole is greater than the diameter of the 5th accommodating hole, and the 5th dodges between Kong Yu five accommodating hole and be formed with the fifth-largest step surface; 5th bearing is arranged in the 5th accommodating hole, the outer ring of the 5th bearing and the 5th accommodating hole interference fit, the outer ring of a 5th bearing wherein end face is kept out by the 5th small stair face, dodge hole the 5th and be provided with the 5th draw-in groove near the fifth-largest step surface, 5th draw-in groove is equipped with the 5th described snap ring, and the 5th snap ring withstands the other end of the outer ring of the 5th bearing; 5th bearing pin is through the first back axle intermediate rod seat back plate, the 5th boss and the 5th bearing, one end of 5th bearing pin has the fifth-largest head, the fifth-largest head contacts with the 5th boss wherein, 5th nut is engaged on the 5th bearing pin, 5th stainless steel gasket is located at the 5th nut and wherein between the 5th boss, the 5th bearing pin overlaps between the 5th boss and the 5th bearing and has the 5th end ring; The 6th described articulated mounting comprises the 6th bearing, the 6th bearing pin, the 6th nut, the 6th stainless steel gasket, the 6th end ring and the 6th snap ring; The other end of connecting panel is provided with the 6th knock hole, 6th knock hole is that the 6th via hole, the 6th accommodating hole and the 6th communicated successively dodges hole, the diameter of the 6th accommodating hole is greater than the diameter of the 6th via hole, the 6th small stair face is formed between 6th accommodating hole and the 6th through hole, 6th diameter of dodging hole is greater than the diameter of the 6th accommodating hole, and the 6th dodges between Kong Yu six accommodating hole and be formed with the sixth-largest step surface; 6th bearing is arranged in the 6th accommodating hole, the outer ring of the 6th bearing and the 6th accommodating hole interference fit, the outer ring of a 6th bearing wherein end face is kept out by the 6th small stair face, dodge hole the 6th and be provided with the 6th draw-in groove near the sixth-largest step surface, 6th draw-in groove is equipped with the 6th described snap ring, and the 6th snap ring withstands the other end of the outer ring of the 6th bearing; 6th bearing pin is through the second back axle intermediate rod seat back plate, the 6th boss and the 6th bearing, one end of 6th bearing pin has the sixth-largest head, the sixth-largest head contacts with the 6th boss wherein, 6th nut is engaged on the 6th bearing pin, 6th stainless steel gasket is located at the 6th nut and wherein between one the 6th boss, the 6th bearing pin overlaps between the 6th boss and the 6th bearing and has the 6th end ring.

Adopt above-mentioned 5th articulated mounting, because the 5th knock hole is the 5th via hole communicated successively, 5th accommodating hole and the 5th dodges hole, the diameter of the 5th accommodating hole is greater than the diameter of the 5th via hole, 5th diameter of dodging hole is greater than the diameter of the 5th accommodating hole, when installation the 5th bearing, dodging hole through the 5th is pressed in the 5th accommodating hole by the 5th bearing, 5th to dodge the gap of Kong Yu five bearing large, because this reducing when the 5th bearing is pressed into and the distance of the 5th knock hole cliding friction, more easily the 5th bearing is installed, after 5th bearing is in place, by the 5th small stair face and the 5th snap ring, axial limiting is carried out to the 5th bearing, improve the reliability that the 5th bearing is installed to the 5th knock hole.Adopt above-mentioned 6th articulated mounting, because the 6th knock hole is the 6th via hole communicated successively, 6th accommodating hole and the 6th dodges hole, the diameter of the 6th accommodating hole is greater than the diameter of the 6th via hole, 6th diameter of dodging hole is greater than the diameter of the 6th accommodating hole, when installation the 6th bearing, dodging hole through the 6th is pressed in the 6th accommodating hole by the 6th bearing, 6th to dodge the gap of Kong Yu six bearing large, because this reducing when the 6th bearing is pressed into and the distance of the 6th knock hole cliding friction, more easily the 6th bearing is installed, after 6th bearing is in place, by the 6th small stair face and the 6th snap ring, axial limiting is carried out to the 6th bearing, improve the reliability that the 6th bearing is installed to the 6th knock hole.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of vehicle frame, front wheel assembly and rear wheel assembly.

Fig. 2 is the upward view of vehicle frame, front wheel assembly and rear wheel assembly.

Fig. 3 is the schematic diagram of dumping car mechanism of independent wheel rear suspension system.

Fig. 4 is the exploded drawings of dumping car mechanism of independent wheel rear suspension system.

Fig. 5 is the birds-eye view of dumping car mechanism of independent wheel rear suspension system.

Fig. 6 is the connection diagram of Rear-axle suspension cylinder and the first Rear-axle suspension seat.

Fig. 7 is the connection diagram of Rear-axle suspension cylinder and the second Rear-axle suspension seat.

Fig. 8 is the connection diagram of digonal link and the first back axle oblique pull pole socket.

Fig. 9 is the connection diagram of digonal link and the second back axle oblique pull pole socket.

Figure 10 is the connection diagram of connecting panel and the first back axle intermediate rod seat.

Figure 11 is the connection diagram of connecting panel and the second back axle intermediate rod seat.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.

As depicted in figs. 1 and 2, dumping car comprises vehicle frame 100, front wheel assembly 200 and rear wheel assembly 300.Vehicle frame 100 comprises front vehicle frame 100a, Rear frame 100b and articulated body 100c, and articulated body 100c is located between front vehicle frame 100a and Rear frame 100b.Front wheel assembly 200 is located on front vehicle frame 100a by front suspension.

As shown in Figures 1 to 5, dumping car mechanism of independent wheel rear suspension system comprises Rear frame 100b, rear suspension system 400 and a plurality of rear wheel assembly 300, wherein, sum >=4 of rear wheel assembly, in the present embodiment, rear wheel assembly is 4, is respectively equipped with two rear wheel assemblies 300 in every side of Rear frame 100b.

Rear wheel assembly 300 comprises electric drive wheel, change-speed box, wheel hub and wheel, and change-speed box is connected on the output shaft of electric drive wheel, and wheel hub is connected on change-speed box, and wheel is located on wheel hub.

As shown in Figures 3 to 5, described rear suspension system 400 comprises resilient suspension 1 and back axle intermediate rod device 2.Be respectively equipped with described resilient suspension 1, two resilient suspension to be arranged symmetrically with relative to back axle intermediate rod device 2 at the two ends of back axle intermediate rod device 2.

Described resilient suspension 1 comprises the first Rear-axle suspension seat 11, second Rear-axle suspension seat 12, Rear-axle suspension cylinder 13, first back axle oblique pull pole socket 14, second back axle oblique pull pole socket 15 and digonal link 16.

As shown in Figures 2 to 4, the first described Rear-axle suspension seat 11 extends laterally, and the middle part K/UP of the first Rear-axle suspension seat 11 is curved, first Rear-axle suspension seat 11 comprises the first Rear-axle suspension seat back plate 111 and the first Rear-axle suspension seat gusset 112, first Rear-axle suspension seat back plate 111 extends bending rear horizontal-extending obliquely from Rear frame, first Rear-axle suspension seat back plate 111 reduces gradually from the outside cross section of Rear frame 100b, material can not only be saved, nor the intensity of the first Rear-axle suspension seat back plate 111 can be affected, between the both sides of the first Rear-axle suspension seat back plate 111 and Rear frame 100b, there is the first connecting portion 113, make the first Rear-axle suspension seat back plate 111 large with the connection area of Rear frame 100b, thus improve Joint strenght, two the first Rear-axle suspension seat gussets 112 are had at the bottom welding of the first Rear-axle suspension seat back plate 111, space is formed between two first Rear-axle suspension seat gussets 112, as shown in Figure 6, the first mounting hole 1121 is provided with in the outer end of the first Rear-axle suspension seat gusset 112, the first boss 114 is respectively equipped with in the both sides of the first Rear-axle suspension seat gusset 112, it is coaxial with the first mounting hole 1141 that first boss 114 has the first perforation 1141, first perforation 1121.

The second described Rear-axle suspension seat 12 comprises the second adapter plate 121 and the second engaging lug 122, second adapter plate 121 is fixed on the permanent seat 3001 outside electric drive wheel, the bottom of the second adapter plate 121 is provided with projection 124, projection 124 can holding in the positioning groove of permanent seat 3001, realize the location to the second adapter plate 121.Second adapter plate 121 is welded with two the second engaging lugs 122 be parallel to each other, second engaging lug 122 comprises the second connecting portion 1221 and the second support 1222, the cross section of the second connecting portion 1221 is greater than the cross section of the second support 1222, second connecting portion 1221 is welded on the second adapter plate 121, the joint face of the second connecting portion 1221 and the second adapter plate 121 is large, improve Joint strenght, second support 1222 is curved, make the mechanical property of the second support 122 good, the tail end of the second support 1222 is provided with the second mounting hole, the second boss 123 is respectively equipped with in the both sides of the second support 1222, second boss 123 has the second perforation 1231, second perforation 1231 is coaxial with the second mounting hole.

The upper end thereof of Rear-axle suspension cylinder 13 is on the first Rear-axle suspension seat 11, and the lower end of Rear-axle suspension cylinder 13 is hinged on the second Rear-axle suspension seat 12.As shown in Figure 6, between Rear-axle suspension cylinder 13 and the first Rear-axle suspension seat 11, be provided with the first articulated mounting 17, as shown in Figure 7, between Rear-axle suspension cylinder 13 and the second Rear-axle suspension seat 12, be provided with the second articulated mounting 18.

As shown in Figure 6, the first described articulated mounting 17 comprises clutch shaft bearing 171, first bearing pin 172, first nut 173, first stainless steel gasket 174, clutch shaft bearing back-up ring 175 and the first snap ring 176; The upper end of Rear-axle suspension cylinder 13 is provided with the first knock hole, first knock hole is that the first via hole, the first accommodating hole and first communicated successively dodges hole, the diameter of the first accommodating hole is greater than the diameter of the first via hole, the first small stair face is formed between first accommodating hole and the first through hole, first diameter of dodging hole is greater than the diameter of the first accommodating hole, and first dodges between hole and the first accommodating hole and be formed with first step surface; Clutch shaft bearing 171 is arranged in the first accommodating hole, the outer ring of clutch shaft bearing 171 and the first accommodating hole interference fit, the outer ring of a clutch shaft bearing 171 wherein end face is kept out by the first small stair face, dodge hole first and be provided with the first draw-in groove near first step surface, first draw-in groove is equipped with the other end that the first described snap ring 176, first snap ring 176 withstands the outer ring of clutch shaft bearing 171; First bearing pin 172 is through the first Rear-axle suspension seat gusset 112, first boss 114 and clutch shaft bearing 171, one end of first bearing pin 172 has first head, first head contacts with the first boss wherein, first nut 173 is engaged on the first bearing pin 172, first stainless steel gasket 174 is located at the first nut 173 and wherein between the first boss, the first bearing pin 172 overlaps between the first boss and clutch shaft bearing and has clutch shaft bearing back-up ring 175; By clutch shaft bearing 171, first bearing pin 172, first nut 173, first stainless steel gasket 174, clutch shaft bearing back-up ring 175 and the first snap ring 176 by Rear-axle suspension cylinder 13 and the first Rear-axle suspension seat 11 hinged.

Adopt above-mentioned first articulated mounting 17, because the first knock hole is the first via hole communicated successively, first accommodating hole and first dodges hole, the diameter of the first accommodating hole is greater than the diameter of the first via hole, first diameter of dodging hole is greater than the diameter of the first accommodating hole, when installing clutch shaft bearing 171, dodging hole through first is pressed in the first accommodating hole by clutch shaft bearing 171, first to dodge the gap of hole and clutch shaft bearing 17 large, because this reducing when clutch shaft bearing 171 is pressed into and the distance of the first knock hole cliding friction, more easily clutch shaft bearing 171 is installed, after clutch shaft bearing 171 is in place, axial limiting is carried out by the first small stair face and the first snap ring 176 pairs of clutch shaft bearings 171, improve the reliability that clutch shaft bearing 171 is installed to the first knock hole, owing to being provided with the first boss 114, therefore, the intensity of the first Rear-axle suspension seat gusset 112 is higher.

As shown in Figure 7, the second described articulated mounting 18 comprises the second bearing 181, second bearing pin 182, second nut 183, second stainless steel gasket 184, second end ring 185 and the second snap ring 186; The lower end of Rear-axle suspension cylinder 13 is provided with the second knock hole, second knock hole is that the second via hole, the second accommodating hole and second communicated successively dodges hole, the diameter of the second accommodating hole is greater than the diameter of the second via hole, the second small stair face is formed between second accommodating hole and the second through hole, second diameter of dodging hole is greater than the diameter of the second accommodating hole, and second dodges between hole and the second accommodating hole and be formed with second largest step surface; Second bearing 181 is arranged in the second accommodating hole, the outer ring of the second bearing 181 and the second accommodating hole interference fit, the outer ring of a second bearing 181 wherein end face is kept out by the second small stair face, dodge hole second and be provided with the second draw-in groove near second largest step surface, second draw-in groove is equipped with the other end that the second described snap ring 186, second snap ring 186 withstands the outer ring of the second bearing 181; Second bearing pin 182 is through the second support 1222, second boss 123 and the second bearing 181, one end of second bearing pin 182 has second largest head, second largest head contacts with the second boss wherein, second nut 183 is engaged on the second bearing pin 182, second stainless steel gasket 184 is located at the second nut 183 and wherein between one second boss, the second bearing pin 182 overlaps between the second boss and the second bearing and has the second end ring 185.

Adopt above-mentioned second articulated mounting 18, because the second knock hole is the second via hole communicated successively, second accommodating hole and second dodges hole, the diameter of the second accommodating hole is greater than the diameter of the second via hole, second diameter of dodging hole is greater than the diameter of the second accommodating hole, when installation the second bearing 181, dodging hole through second is pressed in the second accommodating hole by the second bearing 181, second to dodge the gap of hole and the second bearing 181 large, because this reducing when the second bearing 181 is pressed into and the distance of the second knock hole cliding friction, second bearing 181 is more easily installed, after second bearing 181 is in place, by the second small stair face and the second snap ring, axial limiting is carried out to the second bearing 181, improve the reliability that the second bearing 181 is installed to the second knock hole, owing to being provided with the second boss 123, therefore, the intensity of the second support 1222 is higher.

For the first Rear-axle suspension seat 11, it is mainly subject to vertical power, and the first Rear-axle suspension seat 11 is curved, makes the mechanical property of the first Rear-axle suspension seat 11 better, improves the strength and stiffness of the first Rear-axle suspension seat 11.

First back axle oblique pull pole socket 14 is fixed on Rear frame 100b, second back axle oblique pull pole socket 15 is fixed on the permanent seat 3001 of rear wheel assembly, digonal link 16 is hinged between the first back axle oblique pull pole socket 14 and the second back axle oblique pull pole socket 15, digonal link 16 from the first back axle oblique pull pole socket 14 to the oblique extension of central axial direction of rear wheel assembly.

As shown in Figure 5 and Figure 8, first back axle oblique pull pole socket 14 comprises two the first back axle digonal link back plates 141 be parallel to each other, first back axle digonal link back plate 141 is provided with the 3rd mounting hole 1411, the 3rd boss 142 is respectively equipped with in the both sides of the first back axle digonal link back plate 141, it is coaxial with the 3rd mounting hole 1411 that 3rd boss 142 is provided with the 3rd perforation the 1421, three perforation 1421.

As shown in figures 4 and 9, second back axle oblique pull pole socket 15 comprises the 4th adapter plate 151 and the 4th back plate 152,4th adapter plate 151 is fixed on the permanent seat 3001 of rear wheel assembly, 4th adapter plate 151 is welded with two the 4th back plates 152,4th back plate 152 is provided with the 4th mounting hole, be respectively equipped with the 4th boss the 153, four boss 153 in the both sides of the 4th back plate 152 and be provided with the 4th perforation, the 4th perforation is coaxial with the 4th mounting hole.

Between digonal link 16 and the first back axle oblique pull pole socket 14, be provided with the 3rd articulated mounting 19, between digonal link 16 and the second back axle oblique pull pole socket 15, be provided with the 4th articulated mounting 110.

As shown in Figure 8, the 3rd described articulated mounting 19 comprises the 3rd bearing 191, the 3rd bearing pin 192, the 3rd nut 193, the 3rd stainless steel gasket 194, the 3rd end ring 195 and the 3rd snap ring 196; One end of digonal link 16 is provided with the 3rd knock hole, 3rd knock hole is that the 3rd via hole, the 3rd accommodating hole and the 3rd communicated successively dodges hole, the diameter of the 3rd accommodating hole is greater than the diameter of the 3rd via hole, 3rd is formed with the 3rd small stair face between accommodating hole and third through-hole, 3rd diameter of dodging hole is greater than the diameter of the 3rd accommodating hole, and the 3rd dodges between Kong Yu tri-accommodating hole and be formed with the third-largest step surface; 3rd bearing 191 is arranged in the 3rd accommodating hole, the outer ring of the 3rd bearing 191 and the 3rd accommodating hole interference fit, the outer ring of a 3rd bearing 191 wherein end face is kept out by the 3rd small stair face, dodge hole the 3rd and be provided with the 3rd draw-in groove near the third-largest step surface, 3rd draw-in groove is equipped with the other end that the 3rd described snap ring the 196, three snap ring 196 withstands the outer ring of the 3rd bearing 191; 3rd bearing pin 192 is through the first back axle digonal link back plate the 141, the 3rd boss 142 and the 3rd bearing 191, one end of 3rd bearing pin 192 has the third-largest head, the third-largest head contacts with the 3rd boss wherein, 3rd nut 193 is engaged on the 3rd bearing pin 192,3rd stainless steel gasket 194 is located at the 3rd nut 193 and wherein between the 3rd boss, the 3rd bearing pin 192 overlaps between the 3rd boss and the 3rd bearing 191 and has the 3rd end ring 195.

Adopt above-mentioned 3rd articulated mounting 19, because the 3rd knock hole is the 3rd via hole communicated successively, 3rd accommodating hole and the 3rd dodges hole, the diameter of the 3rd accommodating hole is greater than the diameter of the 3rd via hole, 3rd diameter of dodging hole is greater than the diameter of the 3rd accommodating hole, when installation the 3rd bearing 191, dodging hole through the 3rd is pressed in the 3rd accommodating hole by the 3rd bearing 191, 3rd to dodge the gap of Kong Yu tri-bearing 191 large, because this reducing when the 3rd bearing 191 is pressed into and the distance of the 3rd knock hole cliding friction, more easily the 3rd bearing 191 is installed, after 3rd bearing 191 is in place, by the 3rd small stair face and the 3rd snap ring 196, axial limiting is carried out to the 3rd bearing 191, improve the reliability that the 3rd bearing 191 is installed to the 3rd knock hole.

As shown in Figure 9, the 4th described articulated mounting 110 comprises the 4th bearing 1101, the 4th bearing pin 1102, the 4th nut 1103, the 4th stainless steel gasket 1104, the 4th end ring 1105 and the 4th snap ring 1106; The other end of digonal link 16 is provided with the 4th knock hole, 4th knock hole is that the 4th via hole, the 4th accommodating hole and the 4th communicated successively dodges hole, the diameter of the 4th accommodating hole is greater than the diameter of the 4th via hole, 4th is formed with the 4th small stair face between accommodating hole and fourth hole, 4th diameter of dodging hole is greater than the diameter of the 4th accommodating hole, and the 4th dodges between Kong Yu tetra-accommodating hole and be formed with the fourth-largest step surface; 4th bearing 1101 is arranged in the 4th accommodating hole, the outer ring of the 4th bearing 1101 and the 4th accommodating hole interference fit, the outer ring of a 4th bearing 1101 wherein end face is kept out by the 4th small stair face, dodge hole the 4th and be provided with the 4th draw-in groove near the fourth-largest step surface, 4th draw-in groove is equipped with the other end that the 4th described snap ring the 1106, four snap ring 1106 withstands the outer ring of the 4th bearing 1101; 4th bearing pin 1102 is through the 4th back plate 152, the 4th boss 153 and the 4th bearing 1101, one end of 4th bearing pin 1102 has the fourth-largest head, the fourth-largest head contacts with the 4th boss wherein, 4th nut 1103 is engaged on the 4th bearing pin 1102,4th stainless steel gasket 1104 is located at the 4th nut 1103 and wherein between one the 4th boss, the 4th bearing pin 1102 overlaps between the 4th boss and the 4th bearing 1101 and has the 4th end ring 1105.

Adopt above-mentioned 4th articulated mounting 110, because the 4th knock hole is the 4th via hole communicated successively, 4th accommodating hole and the 4th dodges hole, the diameter of the 4th accommodating hole is greater than the diameter of the 4th via hole, 4th diameter of dodging hole is greater than the diameter of the 4th accommodating hole, when installation the 4th bearing 1101, dodging hole through the 4th is pressed in the 4th accommodating hole by the 4th bearing 1101, 4th to dodge the gap of Kong Yu tetra-bearing 1101 large, because this reducing when the 4th bearing 1101 is pressed into and the distance of the 4th knock hole cliding friction, more easily the 4th bearing 1101 is installed, after 4th bearing 1101 is in place, by the 4th small stair face and the 4th snap ring 1106, axial limiting is carried out to the 4th bearing 1101, improve the reliability that the 4th bearing 1101 is installed to the 4th knock hole.

As shown in Figure 3 and Figure 4, back axle intermediate rod device 2 comprises back axle intermediate rod 21, two the first back axle intermediate rod seats 22, two the second back axle intermediate rod seats 23.

As shown in Figure 4, described back axle intermediate rod 21 comprises transverse slat 211 and is located at the connecting panel 212 at transverse slat 211 two ends respectively; Two first back axle intermediate rod seats are arranged symmetrically with relative to back axle intermediate rod, two second back axle intermediate rod seats are arranged symmetrically with relative to back axle intermediate rod, first back axle intermediate rod seat 22 is fixed on Rear frame 100b, and the second back axle intermediate rod seat 23 is fixed on the permanent seat 3001 of back axle assembly.

Connecting panel 212 is hinged with the first back axle intermediate rod seat 22 of one end and the second back axle intermediate rod seat 23.

As shown in Figure 3, first back axle intermediate rod seat 22 comprises the first fixed support 221 and the first back axle intermediate rod seat back plate 222, first fixed support 221 comprises lateral connection portion 2211 and side connecting portion 2212, lateral connection portion 2211 is fixed on the end face of Rear frame, and side connecting portion 2212 is fixed on the side of Rear frame; First fixed support 221 comprises lateral connection portion 2211 and side connecting portion 2212, the first fixed support 221 is allowed all to be connected with two faces of Rear frame, the area not only connected is large, and lateral connection portion 2211 and side connecting portion 2212 are in being arranged vertically, the first fixed support 221 is carried out better spacing.First fixed support 221 is provided with two the first back axle intermediate rod seat back plates 222 be parallel to each other, first back axle intermediate rod seat back plate 222 is provided with the 5th mounting hole, as shown in Figure 10, the 5th boss 223 is respectively equipped with in the both sides of the first back axle intermediate rod seat back plate 222,5th boss 223 is provided with the 5th perforation, and the 5th perforation is coaxial with the 5th mounting hole; Be provided with the 5th boss, improve the intensity of the first back axle intermediate rod back plate.

As shown in Figure 4, the second back axle intermediate rod seat 23 comprises the second fixed support 231 and the second back axle intermediate rod seat back plate 232; First fixed support 231 is provided with two the second back axle intermediate rod seat back plates 232 be parallel to each other, second back axle intermediate rod seat back plate 232 is provided with the 6th mounting hole, as shown in figure 11, the both sides of bridge intermediate rod seat back plate 232 are respectively equipped with the 6th boss 233 in the second rear, 6th boss 233 is provided with the 6th perforation, and the 6th perforation is coaxial with the 6th mounting hole.

As shown in Figure 10, between connecting panel 211 and the first back axle intermediate rod seat 22, be provided with the 5th articulated mounting 24, as shown in figure 11, between connecting panel 211 and the second back axle intermediate rod seat 23, be provided with the 6th articulated mounting 25.

The 5th described articulated mounting 24 comprises the 5th bearing 241, the 5th bearing pin 242, the 5th nut 243, the 5th stainless steel gasket 244, the 5th end ring 245 and the 5th snap ring 246; One end of connecting panel 211 is provided with the 5th knock hole, 5th knock hole is that the 5th via hole, the 5th accommodating hole and the 5th communicated successively dodges hole, the diameter of the 5th accommodating hole is greater than the diameter of the 5th via hole, 5th is formed with the 5th small stair face between accommodating hole and fifth hole, 5th diameter of dodging hole is greater than the diameter of the 5th accommodating hole, and the 5th dodges between Kong Yu five accommodating hole and be formed with the fifth-largest step surface; 5th bearing 241 is arranged in the 5th accommodating hole, the outer ring of the 5th bearing 241 and the 5th accommodating hole interference fit, the outer ring of a 5th bearing 241 wherein end face is kept out by the 5th small stair face, dodge hole the 5th and be provided with the 5th draw-in groove near the fifth-largest step surface, 5th draw-in groove is equipped with the other end that the 5th described snap ring the 246, five snap ring 246 withstands the outer ring of the 5th bearing 241; 5th bearing pin 242 is through the first back axle intermediate rod seat back plate the 222, the 5th boss and the 5th bearing 241, one end of 5th bearing pin 242 has the fifth-largest head, the fifth-largest head contacts with the 5th boss wherein, 5th nut 243 is engaged on the 5th bearing pin 242,5th stainless steel gasket 244 is located at the 5th nut 243 and wherein between the 5th boss, the 5th bearing pin 242 overlaps between the 5th boss and the 5th bearing 241 and has the 5th end ring 245.

Adopt above-mentioned 5th articulated mounting 24, because the 5th knock hole is the 5th via hole communicated successively, 5th accommodating hole and the 5th dodges hole, the diameter of the 5th accommodating hole is greater than the diameter of the 5th via hole, 5th diameter of dodging hole is greater than the diameter of the 5th accommodating hole, when installation the 5th bearing 241, dodging hole through the 5th is pressed in the 5th accommodating hole by the 5th bearing 241, 5th to dodge the gap of Kong Yu five bearing 241 large, because this reducing when the 5th bearing 241 is pressed into and the distance of the 5th knock hole cliding friction, more easily the 5th bearing 241 is installed, after 5th bearing 241 is in place, by the 5th small stair face and the 5th snap ring 246, axial limiting is carried out to the 5th bearing 241, improve the reliability that the 5th bearing 241 is installed to the 5th knock hole.

As shown in figure 11, the 6th described articulated mounting 25 comprises the 6th bearing 251, the 6th bearing pin 252, the 6th nut 253, the 6th stainless steel gasket 254, the 6th end ring 255 and the 6th snap ring 256; The other end of connecting panel 211 is provided with the 6th knock hole, 6th knock hole is that the 6th via hole, the 6th accommodating hole and the 6th communicated successively dodges hole, the diameter of the 6th accommodating hole is greater than the diameter of the 6th via hole, the 6th small stair face is formed between 6th accommodating hole and the 6th through hole, 6th diameter of dodging hole is greater than the diameter of the 6th accommodating hole, and the 6th dodges between Kong Yu six accommodating hole and be formed with the sixth-largest step surface; 6th bearing 251 is arranged in the 6th accommodating hole, the outer ring of the 6th bearing 251 and the 6th accommodating hole interference fit, the outer ring of a 6th bearing 251 wherein end face is kept out by the 6th small stair face, dodge hole the 6th and be provided with the 6th draw-in groove near the sixth-largest step surface, 6th draw-in groove is equipped with the other end that the 6th described snap ring the 256, six snap ring 256 withstands the outer ring of the 6th bearing 251; 6th bearing pin 252 is through the second back axle intermediate rod seat back plate the 232, the 6th boss and the 6th bearing 251, one end of 6th bearing pin 252 has the sixth-largest head, the sixth-largest head contacts with the 6th boss wherein, 6th nut 253 is engaged on the 6th bearing pin 252,6th stainless steel gasket 254 is located at the 6th nut 253 and wherein between one the 6th boss, the 6th bearing pin 252 overlaps between the 6th boss and the 6th bearing 251 and has the 6th end ring 255.

Adopt above-mentioned 6th articulated mounting 25, because the 6th knock hole is the 6th via hole communicated successively, 6th accommodating hole and the 6th dodges hole, the diameter of the 6th accommodating hole is greater than the diameter of the 6th via hole, 6th diameter of dodging hole is greater than the diameter of the 6th accommodating hole, when installation the 6th bearing 251, dodging hole through the 6th is pressed in the 6th accommodating hole by the 6th bearing 251, 6th to dodge the gap of Kong Yu six bearing 251 large, because this reducing when the 6th bearing 251 is pressed into and the distance of the 6th knock hole cliding friction, more easily the 6th bearing 251 is installed, after 6th bearing 251 is in place, by the 6th small stair face and the 6th snap ring 256, axial limiting is carried out to the 6th bearing 251, improve the reliability that the 6th bearing 251 is installed to the 6th knock hole.

The dumping car mechanism of independent wheel rear suspension system of present embodiment, the power of rear wheel assembly 300 is delivered on Rear frame 100b mainly through the Rear-axle suspension cylinder 13 of back axle intermediate rod device 2 both sides.In the present invention, the both sides of back axle intermediate rod device 2 are provided with Rear-axle suspension cylinder 13 respectively, and are arranged symmetrically with, be two dot point to rear wheel assembly 300, allow the stressed more even of rear wheel assembly 300, stationarity is good, and can prevent rear wheel assembly from rotating by actvies by two suspension cylinders 13.In the present invention, rear wheel assembly 300 forms primarily of electric drive wheel, change-speed box, wheel hub and wheel, no matter rear wheel assembly in working order or off working state, electric drive wheel and change-speed box are non-rotary relative to Rear frame, wheel hub and wheel rotatable relative to electric drive wheel, therefore, by back axle intermediate rod device 2, Rear frame 100b and rear wheel assembly 300 are coupled together, can prevent the electric drive wheel in rear wheel assembly, change-speed box from rotating, allow rear suspension system normally work.

Be connected at all Rear-axle suspension cylinders of the same side, make the pressure of all Rear-axle suspension cylinders of the same side identical, realize the object that each rear wheel assembly in the same side all carries.

Claims

1. a dumping car mechanism of independent wheel rear suspension system, comprises Rear frame and a plurality of rear wheel assembly, and wherein, sum >=4 of rear wheel assembly, are respectively equipped with the rear wheel assembly of more than two in every side of vehicle frame; It is characterized in that: between Rear frame and rear wheel assembly, be provided with rear suspension system; Described rear suspension system comprises resilient suspension and back axle intermediate rod device, is respectively equipped with described resilient suspension at the two ends of back axle intermediate rod device, and two resilient suspensions are arranged symmetrically with relative to back axle intermediate rod device; Described resilient suspension comprises the first Rear-axle suspension seat, the second Rear-axle suspension seat, Rear-axle suspension cylinder, the first back axle oblique pull pole socket, the second back axle oblique pull pole socket and digonal link; First Rear-axle suspension seat is fixed in Rear frame, and the second Rear-axle suspension seat is fixed on rear wheel assembly, and the upper end thereof of Rear-axle suspension cylinder is on the first Rear-axle suspension seat, and the lower end of Rear-axle suspension cylinder is hinged on the second Rear-axle suspension seat; First back axle oblique pull pole socket is fixed in Rear frame, second back axle oblique pull pole socket is fixed on rear wheel assembly, digonal link is hinged between the first back axle oblique pull pole socket and the second back axle oblique pull pole socket, and digonal link is from the oblique extension of central axial direction of the first back axle oblique pull pole socket wheel assembly backward; Back axle intermediate rod device comprises back axle intermediate rod, two the first back axle intermediate rod seats, two the second back axle intermediate rod seats; Described back axle intermediate rod comprises transverse slat and is located at the connecting panel at transverse slat two ends respectively; Two first back axle intermediate rod seats are arranged symmetrically with relative to back axle intermediate rod, and two second back axle intermediate rod seats are arranged symmetrically with relative to back axle intermediate rod, and the first back axle intermediate rod seat is fixed in Rear frame, and the second back axle intermediate rod seat is fixed on back axle assembly; Connecting panel is hinged with the first back axle intermediate rod seat of one end and the second back axle intermediate rod seat; The all Rear-axle suspension cylinders being positioned at Rear frame the same side are connected.

2. dumping car mechanism of independent wheel rear suspension system according to claim 1, is characterized in that: the first described Rear-axle suspension seat extends laterally, and the middle part K/UP of the first Rear-axle suspension seat is curved; First Rear-axle suspension seat comprises the first Rear-axle suspension seat back plate and the first Rear-axle suspension seat gusset, first Rear-axle suspension seat back plate extends bending rear horizontal-extending obliquely from Rear frame, first Rear-axle suspension seat back plate reduces gradually from the outside cross section of Rear frame, has the first connecting portion between the both sides of the first Rear-axle suspension seat back plate and Rear frame; Two the first Rear-axle suspension seat gussets are had at the bottom welding of the first Rear-axle suspension seat back plate, space is formed between two first Rear-axle suspension seat gussets, the first mounting hole is provided with in the outer end of the first Rear-axle suspension seat gusset, the first boss is respectively equipped with in the both sides of the first Rear-axle suspension seat gusset, first boss has the first perforation, and the first perforation is coaxial with the first mounting hole.

3. dumping car mechanism of independent wheel rear suspension system according to claim 2, it is characterized in that: the second described Rear-axle suspension seat comprises the second adapter plate and the second engaging lug, second adapter plate is fixed on rear wheel assembly, second adapter plate is welded with two the second engaging lugs be parallel to each other, second engaging lug comprises the second connecting portion and the second support, the cross section of the second connecting portion is greater than the cross section of the second support, second connecting portion is welded on the second adapter plate, second support is curved, the tail end of the second support is provided with the second mounting hole, the second boss is respectively equipped with in the both sides of the second support, second boss has the second perforation, second perforation is coaxial with the second mounting hole.

4. dumping car mechanism of independent wheel rear suspension system according to claim 3, is characterized in that: between Rear-axle suspension cylinder and the first Rear-axle suspension seat, be provided with the first articulated mounting, between Rear-axle suspension cylinder and the second Rear-axle suspension seat, is provided with the second articulated mounting; The first described articulated mounting comprises clutch shaft bearing, the first bearing pin, the first nut, the first stainless steel gasket, clutch shaft bearing back-up ring and the first snap ring; The upper end of Rear-axle suspension cylinder is provided with the first knock hole, first knock hole is that the first via hole, the first accommodating hole and first communicated successively dodges hole, the diameter of the first accommodating hole is greater than the diameter of the first via hole, the first small stair face is formed between first accommodating hole and the first through hole, first diameter of dodging hole is greater than the diameter of the first accommodating hole, and first dodges between hole and the first accommodating hole and be formed with first step surface; Clutch shaft bearing is arranged in the first accommodating hole, the outer ring of clutch shaft bearing and the first accommodating hole interference fit, the outer ring of a clutch shaft bearing wherein end face is kept out by the first small stair face, dodge hole first and be provided with the first draw-in groove near first step surface, first draw-in groove is equipped with the first described snap ring, and the first snap ring withstands the other end of the outer ring of clutch shaft bearing; First bearing pin is through the first Rear-axle suspension seat gusset, the first boss and clutch shaft bearing, one end of first bearing pin has first head, first head contacts with the first boss wherein, first nut is engaged on the first bearing pin, first stainless steel gasket is located at the first nut and wherein between the first boss, the first bearing pin overlaps between the first boss and clutch shaft bearing and has clutch shaft bearing back-up ring; The second described articulated mounting comprises the second bearing, the second bearing pin, the second nut, the second stainless steel gasket, the second end ring and the second snap ring; The lower end of Rear-axle suspension cylinder is provided with the second knock hole, second knock hole is that the second via hole, the second accommodating hole and second communicated successively dodges hole, the diameter of the second accommodating hole is greater than the diameter of the second via hole, the second small stair face is formed between second accommodating hole and the second through hole, second diameter of dodging hole is greater than the diameter of the second accommodating hole, and second dodges between hole and the second accommodating hole and be formed with second largest step surface; Second bearing is arranged in the second accommodating hole, the outer ring of the second bearing and the second accommodating hole interference fit, the outer ring of a second bearing wherein end face is kept out by the second small stair face, dodge hole second and be provided with the second draw-in groove near second largest step surface, second draw-in groove is equipped with the second described snap ring, and the second snap ring withstands the other end of the outer ring of the second bearing; Second bearing pin is through the second support, the second boss and the second bearing, one end of second bearing pin has second largest head, second largest head contacts with the second boss wherein, second nut is engaged on the second bearing pin, second stainless steel gasket is located at the second nut and wherein between one second boss, the second bearing pin overlaps between the second boss and the second bearing and has the second end ring.

5. dumping car mechanism of independent wheel rear suspension system according to claim 1, it is characterized in that: the first back axle oblique pull pole socket comprises two the first back axle digonal link back plates be parallel to each other, first back axle digonal link back plate is provided with the 3rd mounting hole, the 3rd boss is respectively equipped with in the both sides of the first back axle digonal link back plate, 3rd boss is provided with the 3rd perforation, and the 3rd perforation is coaxial with the 3rd mounting hole.

6. dumping car mechanism of independent wheel rear suspension system according to claim 5, it is characterized in that: the second back axle oblique pull pole socket comprises the 4th adapter plate and the 4th back plate, 4th adapter plate is fixed on rear wheel assembly, 4th adapter plate is welded with two the 4th back plates, 4th back plate is provided with the 4th mounting hole, be respectively equipped with the 4th boss in the both sides of the 4th back plate, the 4th boss is provided with the 4th perforation, and the 4th perforation is coaxial with the 4th mounting hole.

7. dumping car mechanism of independent wheel rear suspension system according to claim 6, is characterized in that: between digonal link and the first back axle oblique pull pole socket, be provided with the 3rd articulated mounting, between digonal link and the second back axle oblique pull pole socket, be provided with the 4th articulated mounting; The 3rd described articulated mounting comprises the 3rd bearing, the 3rd bearing pin, the 3rd nut, the 3rd stainless steel gasket, the 3rd end ring and the 3rd snap ring; One end of digonal link is provided with the 3rd knock hole, 3rd knock hole is that the 3rd via hole, the 3rd accommodating hole and the 3rd communicated successively dodges hole, the diameter of the 3rd accommodating hole is greater than the diameter of the 3rd via hole, 3rd is formed with the 3rd small stair face between accommodating hole and third through-hole, 3rd diameter of dodging hole is greater than the diameter of the 3rd accommodating hole, and the 3rd dodges between Kong Yu tri-accommodating hole and be formed with the third-largest step surface; 3rd bearing is arranged in the 3rd accommodating hole, the outer ring of the 3rd bearing and the 3rd accommodating hole interference fit, the outer ring of a 3rd bearing wherein end face is kept out by the 3rd small stair face, dodge hole the 3rd and be provided with the 3rd draw-in groove near the third-largest step surface, 3rd draw-in groove is equipped with the 3rd described snap ring, and the 3rd snap ring withstands the other end of the outer ring of the 3rd bearing; 3rd bearing pin is through the first back axle digonal link supporting, the 3rd boss and the 3rd bearing, one end of 3rd bearing pin has the third-largest head, the third-largest head contacts with the 3rd boss wherein, 3rd nut is engaged on the 3rd bearing pin, 3rd stainless steel gasket is located at the 3rd nut and wherein between the 3rd boss, the 3rd bearing pin overlaps between the 3rd boss and the 3rd bearing and has the 3rd end ring; The 4th described articulated mounting comprises the 4th bearing, the 4th bearing pin, the 4th nut, the 4th stainless steel gasket, the 4th end ring and the 4th snap ring; The other end of digonal link is provided with the 4th knock hole, 4th knock hole is that the 4th via hole, the 4th accommodating hole and the 4th communicated successively dodges hole, the diameter of the 4th accommodating hole is greater than the diameter of the 4th via hole, 4th is formed with the 4th small stair face between accommodating hole and fourth hole, 4th diameter of dodging hole is greater than the diameter of the 4th accommodating hole, and the 4th dodges between Kong Yu tetra-accommodating hole and be formed with the fourth-largest step surface; 4th bearing is arranged in the 4th accommodating hole, the outer ring of the 4th bearing and the 4th accommodating hole interference fit, the outer ring of a 4th bearing wherein end face is kept out by the 4th small stair face, dodge hole the 4th and be provided with the 4th draw-in groove near the fourth-largest step surface, 4th draw-in groove is equipped with the 4th described snap ring, and the 4th snap ring withstands the other end of the outer ring of the 4th bearing; 4th bearing pin is through the 4th back plate, the 4th boss and the 4th bearing, one end of 4th bearing pin has the fourth-largest head, the fourth-largest head contacts with the 4th boss wherein, 4th nut is engaged on the 4th bearing pin, 4th stainless steel gasket is located at the 4th nut and wherein between one the 4th boss, the 4th bearing pin overlaps between the 4th boss and the 4th bearing and has the 4th end ring.

8. dumping car mechanism of independent wheel rear suspension system according to claim 1, it is characterized in that: the first back axle intermediate rod seat comprises the first fixed support and the first back axle intermediate rod seat back plate, first fixed support comprises lateral connection portion and side connecting portion, lateral connection portion is fixed on the end face of Rear frame, and side connecting portion is fixed on the side of Rear frame; First fixed support is provided with two the first back axle intermediate rod seat back plates be parallel to each other, first back axle intermediate rod seat back plate is provided with the 5th mounting hole, the 5th boss is respectively equipped with in the both sides of the first back axle intermediate rod seat back plate, 5th boss is provided with the 5th perforation, and the 5th perforation is coaxial with the 5th mounting hole.

9. dumping car mechanism of independent wheel rear suspension system according to claim 8, is characterized in that: the second back axle intermediate rod seat comprises the second fixed support and the second back axle intermediate rod seat back plate; First fixed support is provided with two the second back axle intermediate rod seat back plates be parallel to each other, second back axle intermediate rod seat back plate is provided with the 6th mounting hole, the both sides of bridge intermediate rod seat back plate are respectively equipped with the 6th boss in the second rear, 6th boss is provided with the 6th perforation, and the 6th perforation is coaxial with the 6th mounting hole.

10. dumping car mechanism of independent wheel rear suspension system according to claim 9, is characterized in that: between connecting panel and the first back axle intermediate rod seat, be provided with the 5th articulated mounting, between connecting panel and the second back axle intermediate rod seat, be provided with the 6th articulated mounting; The 5th described articulated mounting comprises the 5th bearing, the 5th bearing pin, the 5th nut, the 5th stainless steel gasket, the 5th end ring and the 5th snap ring; One end of connecting panel is provided with the 5th knock hole, 5th knock hole is that the 5th via hole, the 5th accommodating hole and the 5th communicated successively dodges hole, the diameter of the 5th accommodating hole is greater than the diameter of the 5th via hole, 5th is formed with the 5th small stair face between accommodating hole and fifth hole, 5th diameter of dodging hole is greater than the diameter of the 5th accommodating hole, and the 5th dodges between Kong Yu five accommodating hole and be formed with the fifth-largest step surface; 5th bearing is arranged in the 5th accommodating hole, the outer ring of the 5th bearing and the 5th accommodating hole interference fit, the outer ring of a 5th bearing wherein end face is kept out by the 5th small stair face, dodge hole the 5th and be provided with the 5th draw-in groove near the fifth-largest step surface, 5th draw-in groove is equipped with the 5th described snap ring, and the 5th snap ring withstands the other end of the outer ring of the 5th bearing; 5th bearing pin is through the first back axle intermediate rod seat back plate, the 5th boss and the 5th bearing, one end of 5th bearing pin has the fifth-largest head, the fifth-largest head contacts with the 5th boss wherein, 5th nut is engaged on the 5th bearing pin, 5th stainless steel gasket is located at the 5th nut and wherein between the 5th boss, the 5th bearing pin overlaps between the 5th boss and the 5th bearing and has the 5th end ring; The 6th described articulated mounting comprises the 6th bearing, the 6th bearing pin, the 6th nut, the 6th stainless steel gasket, the 6th end ring and the 6th snap ring; The other end of connecting panel is provided with the 6th knock hole, 6th knock hole is that the 6th via hole, the 6th accommodating hole and the 6th communicated successively dodges hole, the diameter of the 6th accommodating hole is greater than the diameter of the 6th via hole, the 6th small stair face is formed between 6th accommodating hole and the 6th through hole, 6th diameter of dodging hole is greater than the diameter of the 6th accommodating hole, and the 6th dodges between Kong Yu six accommodating hole and be formed with the sixth-largest step surface; 6th bearing is arranged in the 6th accommodating hole, the outer ring of the 6th bearing and the 6th accommodating hole interference fit, the outer ring of a 6th bearing wherein end face is kept out by the 6th small stair face, dodge hole the 6th and be provided with the 6th draw-in groove near the sixth-largest step surface, 6th draw-in groove is equipped with the 6th described snap ring, and the 6th snap ring withstands the other end of the outer ring of the 6th bearing; 6th bearing pin is through the second back axle intermediate rod seat back plate, the 6th boss and the 6th bearing, one end of 6th bearing pin has the sixth-largest head, the sixth-largest head contacts with the 6th boss wherein, 6th nut is engaged on the 6th bearing pin, 6th stainless steel gasket is located at the 6th nut and wherein between one the 6th boss, the 6th bearing pin overlaps between the 6th boss and the 6th bearing and has the 6th end ring.