CN2711002Y - Four-shaft heavy lorry under carriage with lifting-able rear axle - Google Patents

Four-shaft heavy lorry under carriage with lifting-able rear axle Download PDF

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Publication number
CN2711002Y
CN2711002Y CN 200420052482 CN200420052482U CN2711002Y CN 2711002 Y CN2711002 Y CN 2711002Y CN 200420052482 CN200420052482 CN 200420052482 CN 200420052482 U CN200420052482 U CN 200420052482U CN 2711002 Y CN2711002 Y CN 2711002Y
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CN
China
Prior art keywords
axle
assembly
limiting stopper
right sides
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 200420052482
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Chinese (zh)
Inventor
韩诚
唐洪荣
五远征
邵珠湘
孙长春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Heavy Duty Truck Group Co Ltd
Original Assignee
China National Heavy Duty Truck Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Heavy Duty Truck Group Co Ltd filed Critical China National Heavy Duty Truck Group Co Ltd
Priority to CN 200420052482 priority Critical patent/CN2711002Y/en
Application granted granted Critical
Publication of CN2711002Y publication Critical patent/CN2711002Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a four-shaft heavy lorry under carriage with lifting-able rear axle, mainly comprising a driver's cab, an engine, a gearbox, a clutch, a steering system, a lifting-able rear axle, a driving axle, lorry frame, wheels, a braking system, a front steel spring, a rear steel spring and a lifting mechanism of a rear supporting axle hydraulic pressure. The lifting-able rear axle is composed of a balance axle, a left and right swinging arms assembly, axle heads and a hub brake assembly. The lifting mechanism of the rear axle hydraulic pressure is composed of a lifting cylinder, a pushing arm, a rotary axle, a supporting arm, right and left pushing arms and a right and left support seats assembly. The vehicle frame is provided with a supporting axle lifting limited block assembly. The rear supporting axle of the utility model adopts the oscillating arm type equalizing suspension, and the lifting of the rear supporting axle adopts the steering pump to get force. The utility model has a simple structure without an extra oil tank, which reduces the cost and is favorable for the designing and arrangement of the entire vehicle.

Description

Four heavy duty truck chassis that back axle can promote
(1) technical field
The utility model relates to the multiaxle truck chassis in the heavy-duty truck, belongs to the heavy-duty truck technical field.
(2) background technology
Four heavy duty truck chassis mainly are made up of operator's compartment, driving engine, change speed gear box, power-transfer clutch, gear box gearshift mechanism, clutch operation, driving system, steering swivel system, front steering axle, rear trunnion, drive axle, vehicle frame, wheel, brake system, front spring spring and rear leaf spring etc.Four heavy duty trucks of domestic-developed, 8 * 4 the drive forms (preceding two bridges are the dual rotation bridge, and back two bridges are double drive axle) that adopt more, the shortcoming of this vehicle is to have increased wear on tyres when empty wagons or underloading, and fuel oil consumption is big, and economy is relatively poor.Therefore 8 * 2 drive form is often adopted on the heavy duty truck chassis at present, and preceding two bridges are the dual rotation bridge, and back axle I is a drive axle, and back axle II is for can promote the supporting bridge.Under zero load or light load, rear trunnion is mentioned, both can reduce Tyte Wear, reduce oil consumption again, improved the ride comfort of car load simultaneously.For rear trunnion can be promoted, rear suspension is an air suspension through what adopt at home, by air bag rear trunnion is promoted, but is subjected to the restriction of air suspension, and road conditions are had relatively high expectations, and cost is higher, has limited field of application.Adopt the rear trunnion of Swing Arm Type Balanced Suspension to obtain widespread use abroad, by oil cylinder rear trunnion is mentioned, adopting independently, motor-drive pump is connected with storage battery as propulsion source, the pressure oil that motor-drive pump produces enters oil cylinder, realizes the lifter motion of rear trunnion.But there is the cost height in the application of motor-drive pump, need petrol storage tank be set separately, is unfavorable for the master layout of car load.
(3) summary of the invention
At the deficiency that prior art exists, it is a kind of simple in structure that the utility model provides, and is beneficial to four heavy duty truck chassis of tractor truck that back axle that car load arranges can promote.
The utility model adopts following solution:
Four heavy duty truck chassis that back axle can promote are mainly by operator's compartment, driving engine, change speed gear box, power-transfer clutch, change speed gear box is handled, clutch control, driving system, steering swivel system, front steering axle, can promote back axle, drive axle, vehicle frame, wheel, brake system, the front spring spring, compositions such as rear leaf spring and rear trunnion hydraulic lifting mechanism, can promote back axle by balance shaft, left and right sides swing arm assembly, spindle nose and hub brake assembly are formed, balance shaft is installed in the left and right sides trunnion base that is fixed on the vehicle frame, left and right sides swing arm assembly is installed in the balance shaft two ends, and hub brake assembly and wheel are installed on the left and right sides swing arm assembly by spindle nose; The back axle hydraulic lifting mechanism is by elevating ram, the thrust bracelet, rotating shaft, hold-down arm, left and right sides thrust arm second and about seat assembly form, elevating ram connects to ground, its piston rod is connected with thrust bracelet one end by bearing pin, the thrust bracelet other end and rotating shaft are hinged, prop up in the seat assembly about rotating shaft is installed in, hold-down arm is housed on it, left and right sides thrust arm second is installed in two ends, the rotating shaft left and right sides, by bearing pin roller is housed on the thrust arm second of the left and right sides, roller is pressed against on the left and right sides swing arm assembly, can promote back axle hub brake assembly and wheel and be installed on the left and right sides swing arm assembly; Elevating ram is connected with power steerig pump in the steering hardware by 3-position 4-way lifting valve and oil pipe, and the 3-position 4-way lifting valve is installed on the vehicle frame by support; Bolster is housed on the vehicle frame promotes the limiting stopper assembly.
Bolster promotes the limiting stopper assembly to be made up of limiting stopper support, limiting stopper guard shield and limiting stopper, and limiting stopper is connected with the limiting stopper support, and the limiting stopper guard shield is contained on the limiting stopper support and covers on the limiting stopper, and the limiting stopper support is provided with the connecting bore that connects to ground.
The rear trunnion on four heavy duty truck chassis that the utility model back axle can promote adopts Swing Arm Type Balanced Suspension, the bolster spindle nose is pressed into balance shaft band swing arm assembly by cooperation and forms lifting back bearing axle, and the power steerig pump power taking is adopted in the lifting of rear trunnion, compare with propulsion source independently, simple and practical, do not need fuel tank is set separately, reduced cost, be beneficial to design, the layout of car load.Simultaneously, lifting back bearing axle adopts special-purpose anti-deformation guide and limit piece location, has prolonged the service life of limiting stopper assembly, has improved the accuracy of positioning of lifting back bearing axle hoisting depth.
(4) description of drawings
The structural representation on four heavy duty truck chassis that Fig. 1 can promote for the utility model back axle.
Fig. 2 is for turning to the fundamental diagram of mechanism in the utility model.
Fig. 3 is the structural representation of lifting back bearing axle hydraulic lifting mechanism in the utility model.
Fig. 4 is the birds-eye view of Fig. 3.
Fig. 5 is the structural representation of balance shaft band swing arm assembly in the utility model.
Fig. 6 is that the A of Fig. 5 is to view.
The back axle hub brake assembly structure scheme drawing of Fig. 7 for promoting in the utility model.
Fig. 8 is the structural representation that promotes the limiting stopper assembly in the utility model.
Wherein: 1, operator's compartment, 2, driving engine, 3, front spring spring I, 4, front steering axle I, 5, front spring spring II, 6, front steering axle II, 7, change speed gear box, 8, vehicle frame, 9, drive axle, 10, rear leaf spring, 11, lifting back bearing axle, 12, the thrust bracelet, 13, thrust arm second, 14, elevating ram, 15, bolster promotes the limiting stopper assembly, 16, power steerig pump, 17, oil pipe, 18, oil pipe, 19, power-assisted steering device, 20, oil pipe, 21, the steering oil reservoir support, 22, steering oil reservoir, 23, oil pipe, 24, the 3-position 4-way lifting valve, 25, the lifting valve support, 26, oil pipe, 27, oil pipe, 28, prop up seat assembly, 29, bearing pin, 30, bearing pin, 31, bearing pin, 32, the elevating ram support, 33, roller, 34, lubrication adapter, 35, rotating shaft, 36, supporting arm, 37, balance shaft, 38, left side swing arm assembly, 39, left side trunnion base, 40, right trunnion base, 41, the right swing arm assembly, 42, can promote back axle hub brake assembly, 43, spindle nose, 44, the limiting stopper support, 45, the limiting stopper guard shield, 46, limiting stopper
(5) specific embodiment
Embodiment: Fig. 1 has provided structural representation of the present utility model.The utility model is mainly by operator's compartment 1, driving engine 2, front spring spring I 3, front steering axle I 4, front spring spring II 5, front steering axle II 6, change speed gear box 7, vehicle frame 8, drive axle 9, rear leaf spring 10 and can promote back axle assembly 15 and form.Can promote back axle assembly 15 by balance shaft 37, left and right sides swing arm assembly 41 and 38, can promote back axle hub brake assembly 42 and spindle nose 43 is formed, balance shaft 37 is installed in the left and right sides trunnion base 39 and 40 that is fixed on the vehicle frame 8, left and right sides swing arm assembly is installed in the balance shaft two ends, but lift bridge rear-wheel hub brake assembly 42 and wheel are installed on the left and right sides swing arm assembly by spindle nose 43.The back axle hydraulic lifting mechanism is by elevating ram 14, thrust bracelet 12, rotating shaft 35, left and right sides thrust arm second 13, hold-down arm 36 and about seat assembly 28 form, elevating ram 14 is connected with vehicle frame 8, its piston rod is connected with thrust bracelet 12 1 ends by bearing pin 29, thrust bracelet 12 other ends and rotating shaft 35 are hinged, prop up in the seat assembly 28 about rotating shaft 35 is installed in, hold-down arm 36 is housed on it, left and right sides thrust arm second 13 is installed in two ends, rotating shaft 35 left and right sides, by bearing pin 30 roller 33 is housed on the left and right sides thrust arm second 13, roller 33 is pressed against on the left and right sides swing arm assembly; Elevating ram 14 is connected with power steerig pump 16 in the steering hardware by 3-position 4-way lifting valve 24 and oil pipe, and 3-position 4-way lifting valve 24 is installed on the vehicle frame 8 by support 25.
The oil inlet of power steerig pump 16 links to each other with the oil outlet of steering oil reservoir 22 (steering oil reservoir is connected with vehicle frame 8 by steering oil reservoir support 21) by oil pipe 17 (low pressure), its oil outlet is connected with the P mouth of 3-position 4-way lifting valve 24 by oil pipe 23 (high pressure), the T mouth of 3-position 4-way lifting valve 24 links to each other with the oil inlet of power steering 19 by oil pipe 18 (high pressure), and the return opening of power steering 19 links to each other with the return opening of steering oil reservoir 22 by oil pipe 20 (low pressure).When automobile normal running, 3-position 4-way lifting valve 24 is at meta, have only P mouth and T mouth to communicate this moment, the hydraulic oil of steering oil reservoir 22 is by oil pipe 17, produce pressure through power steerig pump 16, pressure oil links to each other with the oil inlet of power steering 19 by oil pipe 23, the P mouth of 3-position 4-way lifting valve 24, T mouth, oil pipe 18, and by oil pipe 20, hydraulic oil flows back to steering oil reservoir 22 from the return opening of power steering 19.This process is the normal function of exercising power steering 19, and the power-assisted square that produces when pressure oil is flowed through power steering 19 acts on dual rotation front axle I, the II by relevant steering hardware, the power-assisted effect of performance power steering 19.(referring to Fig. 2)
3-position 4-way lifting valve 24 (manual mode operation valve) has three control positions, i.e. lifting, meta, whereabouts.When lift location, the P mouth of 3-position 4-way lifting valve 24 communicates with the A mouth, and the T mouth communicates with the B mouth.The oil outlet of power steerig pump 16 is connected with the P mouth of 3-position 4-way lifting valve 24 by oil pipe 23 (high pressure), pressure oil is by the P mouth, the A mouth, the oil pipe 27 that links to each other with the A mouth enters the cavity of resorption of elevating ram 14, elevating ram 14 is hinged by bearing pin 31 and elevating ram bracket assembly 32, elevating ram bracket assembly 32 is connected with vehicle frame 8, the piston rod of elevating ram 19 is connected with thrust bracelet 12 by bearing pin 29, so pressure oil promotes thrust bracelet 12 together with rotating shaft 36 by the piston rod of elevating ram 19, left and right sides thrust arm second 13 together around about the centre hole clickwise of seat assembly 28, left and right sides thrust arm second 13 is pressed against left swing arm assembly 38 respectively with by the coupled roller 33 of bearing pin 30, on the right swing arm assembly 41, and promote left swing arm assembly 38, right swing arm assembly 41 is around being installed in left trunnion base 39, balance shaft 37 left-hand revolutions in the right trunnion base 40.Drive is installed in lift bridge wheel hub on the left and right sides swing arm assembly and brake assembly 42 by spindle nose 43 and mentions together with wheel.Roller 33 has reduced friction with left and right sides swing arm assembly around the rotation of bearing pin 30, has improved mechanical efficiency.The hydraulic oil of elevating ram 14 epicoeles flows back to steering oil reservoir 22 by B mouth, T mouth, oil pipe 18, power steering 19, the oil pipe 20 of oil pipe 26,3-position 4-way lifting valve 24.Bolster is housed on vehicle frame 8 promotes limiting stopper assembly 15, when left and right sides swing arm assembly left-hand revolution touches lifting limiting stopper assembly 15, meta is returned in the control position of 3-position 4-way lifting valve 24, lifting process finishes.Have only P, T mouth to communicate this moment, and steering swivel system is started working.In addition, integrated hydraulic lock on the 3-position 4-way lifting valve 24 guarantees the raised position of rear trunnion.
When the position, whereabouts, the P mouth of 3-position 4-way lifting valve 24 communicates with the B mouth, and the T mouth communicates with the A mouth, between T mouth and the A mouth flow regulating valve is housed, with stable support axle speed of fall.Process by opposite when promoting falls rear trunnion, at last meta is returned in the control position of 3-position 4-way lifting valve 24, makes steering swivel system in running order.
Promote limiting stopper assembly 15 and form (referring to Fig. 8) by limiting stopper support 44, limiting stopper guard shield 45, limiting stopper 46.Wherein limiting stopper support 44 is welded by 6 millimeters thick steel plates, and limiting stopper guard shield 45 is processed by 2 millimeters thick steel plates, and limiting stopper 46 adopts elastomeric material.Lifting limiting stopper assembly 15 links to each other with vehicle frame by the connecting bore of limiting stopper support 44, limiting stopper 46 is connected with limiting stopper support 44 by being embedded in the in-to-in double-screw bolt, limiting stopper guard shield 45 is welded on limiting stopper support 44, and pad and has 2 millimeters assemblage gap around limiting stopper 46.Because bolster is the rotation on-rectilinear movement when promoting, very easily cause the torsional deflection of rubber limiting stopper for a long time, influence hoisting depth even cause the damage of rubber limiting stopper.The lifting limiting stopper assembly 15 that limiting stopper guard shield 45 is housed can effectively prevent to have the distortion directional tagging by the torsional deflection of rubber limiting stopper 46, has prolonged the service life that promotes the limiting stopper assembly, has improved the hoisting depth accuracy of positioning of lifting back bearing axle.
The lifting of rear trunnion and fall the propulsion source power steerig pump 16 that has utilized power steering system in the utility model, the lifting of rear trunnion and falling under dead ship condition is carried out, guaranteed the safety of power steering system, compared and independently promote propulsion source and reduced cost.

Claims (2)

1. four heavy duty truck chassis that back axle can promote, mainly by operator's compartment, driving engine, change speed gear box, power-transfer clutch, change speed gear box is handled, clutch control, driving system, steering swivel system, front steering axle, can promote back axle, drive axle, vehicle frame, wheel, brake system, the front spring spring, compositions such as rear leaf spring and rear trunnion hydraulic lifting mechanism, can promote back axle by balance shaft, left and right sides swing arm assembly, spindle nose and hub brake assembly are formed, balance shaft is installed in the left and right sides trunnion base that is fixed on the vehicle frame, left and right sides swing arm assembly is installed in the balance shaft two ends, and hub brake assembly and wheel are installed on the left and right sides swing arm assembly by spindle nose; It is characterized in that: the back axle hydraulic lifting mechanism is by elevating ram, the thrust bracelet, rotating shaft, hold-down arm, left and right sides thrust arm second and about seat assembly form, elevating ram connects to ground, its piston rod is connected with thrust bracelet one end by bearing pin, the thrust bracelet other end and rotating shaft are hinged, prop up in the seat assembly about rotating shaft is installed in, hold-down arm is housed on it, left and right sides thrust arm second is installed in two ends, the rotating shaft left and right sides, by bearing pin roller is housed on the thrust arm second of the left and right sides, roller is pressed against on the left and right sides swing arm assembly, can promote back axle hub brake assembly and wheel and be installed on the left and right sides swing arm assembly; Elevating ram is connected with power steerig pump in the steering hardware by 3-position 4-way lifting valve and oil pipe, and the 3-position 4-way lifting valve is installed on the vehicle frame by support; Bolster is housed on the vehicle frame promotes the limiting stopper assembly.
2. four heavy duty truck chassis that back axle according to claim 1 can promote, it is characterized in that: described bolster promotes the limiting stopper assembly and is made up of limiting stopper support, limiting stopper guard shield and limiting stopper, limiting stopper is connected with the limiting stopper support, the limiting stopper guard shield is contained on the limiting stopper support and covers on the limiting stopper, and the limiting stopper support is provided with the connecting bore that connects to ground.
CN 200420052482 2004-07-26 2004-07-26 Four-shaft heavy lorry under carriage with lifting-able rear axle Expired - Lifetime CN2711002Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420052482 CN2711002Y (en) 2004-07-26 2004-07-26 Four-shaft heavy lorry under carriage with lifting-able rear axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420052482 CN2711002Y (en) 2004-07-26 2004-07-26 Four-shaft heavy lorry under carriage with lifting-able rear axle

Publications (1)

Publication Number Publication Date
CN2711002Y true CN2711002Y (en) 2005-07-20

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CN 200420052482 Expired - Lifetime CN2711002Y (en) 2004-07-26 2004-07-26 Four-shaft heavy lorry under carriage with lifting-able rear axle

Country Status (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100391754C (en) * 2005-11-02 2008-06-04 柳州特种汽车厂 Sectional swing pontoon of car
CN102745259A (en) * 2012-07-19 2012-10-24 西北工业大学 Swing arm type double-wheel-track composite special engineering vehicle chassis
WO2013104199A1 (en) * 2012-01-09 2013-07-18 中联重科股份有限公司 Combination of suspension systems, multiple-axle vehicle and multiple-axle chassis
CN104191926A (en) * 2014-08-18 2014-12-10 湖南机电职业技术学院 Heavy-load automobile hydraulic system for axle lifting
CN107639986A (en) * 2017-09-19 2018-01-30 合肥工业大学 A kind of Swing Arm Type Balanced Suspension with flare angle adjusting mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100391754C (en) * 2005-11-02 2008-06-04 柳州特种汽车厂 Sectional swing pontoon of car
WO2013104199A1 (en) * 2012-01-09 2013-07-18 中联重科股份有限公司 Combination of suspension systems, multiple-axle vehicle and multiple-axle chassis
CN102745259A (en) * 2012-07-19 2012-10-24 西北工业大学 Swing arm type double-wheel-track composite special engineering vehicle chassis
CN104191926A (en) * 2014-08-18 2014-12-10 湖南机电职业技术学院 Heavy-load automobile hydraulic system for axle lifting
CN107639986A (en) * 2017-09-19 2018-01-30 合肥工业大学 A kind of Swing Arm Type Balanced Suspension with flare angle adjusting mechanism

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20140726

Granted publication date: 20050720