CN207826361U - A kind of durable, lightweight hydraulic lifting system - Google Patents

Abstract

The utility model discloses a kind of durable, lightweight hydraulic lifting systems, it is characterised in that：Micro hydraulic fuel tank, piston, guide sleeve are made of aluminum alloy materials, electrically operated fuel pump assembly oil extracting mouth is connect with the inlet port of integrated form pump housing assembly by oil pipe, electrically operated fuel pump assembly oil outlet is connect with the oil inlet of integrated form pump housing assembly, finally the hydraulic fluid port that pushes away of integrated form pump housing assembly is connect with the hydraulic fluid port that pushes away of Integral hydraulic oil cylinder assembly, the drawing hydraulic fluid port of integrated form pump housing assembly is connect with the drawing hydraulic fluid port of Integral hydraulic oil cylinder assembly；Hydraulic medium replaces hydraulic oil, sealing element to be made of heatproof PU materials and PTFE material using anti-icing fluid, reversing shaft and the pump housing use fitted seal, increase by one of waist type oil-recovery tank simultaneously, hydraulic control one-way valve is directly installed in cylinder body pedestal, piston is used with piston rod and is threadedly coupled.The utility model integrated hydraulic system structure is simple and convenient to operate, and reduces this body structure of oil cylinder and weight, improves the accuracy of manufacture of product.

Description

A kind of durable, lightweight hydraulic lifting system

Technical field

The utility model is related to cab of heavy truck hydraulic pressure automatic lifting device, especially a kind of cab of heavy truck Durable, lightweight hydraulic lifting system.

Background technology

In recent years, the policy of several of central government stimulation car markets is put into effect or is exited, and Chinese car market is made to twist universe Positive anti-change.Economic restructuring and investment in fixed assets are the chief motivation amounts of middle heavy truck Industry Quick Development, basis Engineering construction continues to keep increasing, to the huge pulling function in heavy truck market under the comprehensive function of superimposed factor favourable, heavy truck row The rigid demand that industry market capacity expands and vehicle replacement is regenerated becomes base support.Road maintainance cost cancels and weight metering charging political affairs The influence in heavy truck market is huge during plan is especially commercial car, is mainly reflected in lightweight and the medium-weight vehicle automation of vehicle On.Tilt cab greatly simplifies the process that maintenance is repaired to vehicle, can be rated as most classical in truck industry set One of meter.Almost absolutely cab over engine heavy truck all supports turn over function at present, even previously this few function Light truck also more and more uses turnover technology now.It but may be reversed and no doubt facilitate, but complicated switching mechanism is also inevitable Some problems can be gone out, main problem shows several aspects：1, light truck generally uses torsion bar type switching mechanism, truck to drive Room own wt is larger, and it is impossible it to be overturn to depend merely on manpower, so needing a set of power assisting device.And power assisting device It is divided into for from operation principle as torsion bar type and fluid pressure type.Torsion bar type is exactly preferable by one or two elasticity in simple terms Iron rod provide auxiliary power, driver's cabin is lifted by manpower.Torsion bar is twisted when driver's cabin drops to extreme lower position, bullet when lifting Power discharges, to play the role of power-assisted.Torsion bar type driving cab power-assisted inverting mechanism has the advantages that property simple and reliable for structure is good, But it is used with continuous, the elastic force of torsion bar can be lower and lower.2, Manual hydraulic overturning system is exactly to be risen by hydraulic power The system of driver's cabin.For power resources, hydraulic pressure overturning system is also divided into manpower type and electrodynamic type.Due to overturning driver's cabin When be not very much, manpower is enough to be competent at, so most of heavy trucks all use Manual hydraulic to overturn system now.Hydraulic pressure is overturn The maximum benefit of system is exactly that lifting force is sufficiently large, no matter multiple driver's cabin can be jacked up easily, this point is that torsion bar type helps What Force system cannot compare.But it also has disadvantage, and structure is too complicated, and failure rate is higher than torsion bar type, to maintenance also have compared with High requirement.For example the north in winter, hydraulic lifting system must use the hydraulic oil of more lower viscosity levels, otherwise can be difficult to Rise driver's cabin.If encountering such situation, other than replacing hydraulic oil, need to pour handlance with hot water it is emergent, In addition to this, most of vehicle front panel when overturning driver's cabin can all be interfered with vehicle frame, so before overturning It has to remember first to open front panel, otherwise front panel will be caused to damage.

Utility model content

The purpose of the utility model is to overcome existing structure there are the problem of.A kind of warp of cab of heavy truck is provided Long durable, lightweight hydraulic lifting system.The purpose of this utility model is realized by following technical proposals：A kind of heavy truck Durable, the lightweight hydraulic lifting system of driver's cabin include hydraulic medium, electrically operated fuel pump assembly, Small Plunger Pump, collection Accepted way of doing sth pump housing assembly, Mini oil tank, the pump housing, commutation axle assembly, pressure axle assembly, rocking arm axle assembly, Integral hydraulic oil cylinder are total At, piston, guide sleeve, integrated form cylinder body and one-piece piston bar, it is characterised in that：Plunger pump, relay and switch installation are solid It is scheduled on motor, is connect electrically operated fuel pump assembly oil extracting mouth with the inlet port of integrated form pump housing assembly by oil pipe, then pass through Electrically operated fuel pump assembly oil outlet is connect by oil pipe with the oil inlet of integrated form pump housing assembly, finally by oil pipe by integrated pump The hydraulic fluid port that pushes away of body assembly is connect with the hydraulic fluid port that pushes away of Integral hydraulic oil cylinder assembly, the drawing hydraulic fluid port and integrated form of integrated form pump housing assembly The drawing hydraulic fluid port of hydraulic cylinder assembly connects；Plunger pump, micro hydraulic fuel tank, piston, guide sleeve are made of aluminum alloy materials, liquid Medium is pressed to replace hydraulic oil, sealing element to be made of heatproof PU materials and PTFE material using anti-icing fluid, reversing shaft is close using 6 Sealing is sealed, and reversing shaft and the pump housing use fitted seal, fit clearance 0.004-0.008mm, while increasing by one of waist Type oil-recovery tank, reversing shaft inside use G10 steel balls, spring and bolt structure, steel ball to add using inner circle mill with reversing shaft sealing surface Work technique, integrated form cylinder assembly integrate hydraulic control one-way valve, cylinder body and one-way throttle valve, and hydraulic control one-way valve is directly pacified In cylinder body pedestal, throttle valve is installed to after being integrated with connector on cylinder body pedestal, and chrome-plated process is used after inner wall of cylinder honing Integrated form pump housing assembly uses auto-manual structure, including rocking arm axle assembly, hydraulic pump shaft assembly, vent valve, commutation axle assembly, Aluminium alloy hydraulic oil container, connector and the pump housing；Respectively increase an oil suction connector in aluminium alloy hydraulic oil container end face and pump body end surface, The inlet port of electrically operated fuel pump assembly is connect with aluminium alloy hydraulic oil container end face inlet port, the oil outlet of electrically operated fuel pump assembly with The inlet port of pump body end surface connects, and realizes that hydraulic medium is drawn into commutation by automatic lifting or manual operation rocker arm shaft by switch In axis and pressurize；Piston is used with piston rod and is threadedly coupled.

Described piston rod uses 40Cr material solid forging techniques, piston rod outer surface to use Duplex Chromium Plating technique, the One layer of milky white chromium of plating, thickness of coating 0.02-0.03mm, second layer hard chrome plating, thickness of coating 0.03-0.04mm,

The utility model integrated hydraulic system structure is simple and convenient to operate, and is reduced this body structure of oil cylinder and weight, is carried The high accuracy of manufacture of product.Stability and the safety for ensureing product, improve the service life of product, reduce manufacture at This, improves production efficiency and the market competitiveness.

Description of the drawings

Fig. 1 is the utility model principle schematic diagram；

Fig. 2 is the utility model electrically operated fuel pump assembly structure schematic diagram；

Fig. 3 is the utility model Integral hydraulic oil cylinder assembly structure schematic diagram；

Fig. 4 is the utility model integrated form pump housing assembly structure schematic diagram；

Fig. 5 is the utility model reversing shaft assembly structure schematic diagram.

Specific implementation mode

As shown in Figure 1, the utility model includes hydraulic medium, electrically operated fuel pump assembly 1, integrated form pump housing assembly 2, integrates Formula hydraulic cylinder assembly 3.Electrically operated fuel pump assembly oil extracting mouth is connect with the inlet port of integrated form pump housing assembly by oil pipe, then Electrically operated fuel pump assembly oil outlet is connect with the oil inlet of integrated form pump housing assembly by oil pipe, will be integrated finally by oil pipe The hydraulic fluid port that pushes away of formula pump housing assembly is connect with the hydraulic fluid port that pushes away of Integral hydraulic oil cylinder assembly, drawing hydraulic fluid port and the collection of integrated form pump housing assembly The drawing hydraulic fluid port of accepted way of doing sth hydraulic cylinder assembly connects.Integral hydraulic oil cylinder assembly as shown in Figure 2,3, including the cold bar 8 of monoblock type work, Aluminium alloy guide sleeve 9, PU sealing elements 10, integrated form cylinder body 11, all-aluminium piston 12, individual throttle valve connector, that is, heap oil device connector 13, port connection 14 and hydraulic control one-way valve, plunger pump 4, relay 6 and switch 7 is drawn to be fixed on motor 5, electronic oil transportation Pump assembly is defeated by integrated form pump housing assembly by the hydraulic medium in the integrated form pump housing assembly under the action of relay and switch Enter into Integral hydraulic oil cylinder assembly, making hydraulic cylinder, two chambers are realized by difference in areas and lifted simultaneously into hydraulic medium up and down；Turn Commutation axle assembly in dynamic integrated form pump housing assembly makes the drawing hydraulic fluid port in integrated form pump housing assembly and Integral hydraulic oil cylinder assembly Drawing hydraulic fluid port connect, in integrated form pump housing assembly push away hydraulic fluid port and Integral hydraulic oil cylinder assembly push away hydraulic fluid port and the integrated form pump housing Assembly aluminium alloy fuel tank connect, hydraulic medium under the action of pump enter oil cylinder rod chamber, open simultaneously integrated form cylinder body without The individual throttle valve of rod cavity lower end, makes that hydraulic medium passes through individual throttle valve, hydraulic cylinder pushes away hydraulic fluid port and pump housing assembly pushes away hydraulic fluid port It returns in aluminium alloy hydraulic oil container, realizes that oil cylinder is fallen after rise.It is characterized in that：Plunger pump, micro hydraulic fuel tank, piston, guide sleeve It is made of aluminum alloy materials, product weight can be reduced to original 1/3, realize product lightweight, while using aluminium alloy Hydraulic medium may be used anti-icing fluid and replace hydraulic oil after material, reduce use cost, while can solve hydraulic oil extremely cold Product loses the defect of function when being solidified under environment.The sealing element as shown in Fig. 3,5 uses heatproof PU materials and PTFE material, can It is worked normally under -40 DEG C of -120 DEG C of environment, while the sealing member material can use anti-icing fluid as hydraulic medium, reduce Use cost, while the defect that product when hydraulic oil solidifies under extremely cold environment loses function can be solved.As shown in figure 5, changing It is sealed to axis 30 using 6 sealing elements 27, effectively prevent hydraulic medium liquid leakage and leakage, reversing shaft under high-low pressure environment Fitted seal, fit clearance 0.004-0.008mm is used to cancel reversing shaft upper oil hole sealing element, while increasing by one with the pump housing Road waist type oil-recovery tank, in oil return, the connection pump housing pushes away hydraulic fluid port and aluminium alloy fuel tank.Oilhole sealing element is solved in commutation process Sealing element is damaged with pump housing oilhole fricting shearing, influences product service life, which can improve the service life of product, can It is increased to 8500 times by original 5000 times.Use 26 structure of G10 steel balls, spring 28 and screw inside reversing shaft, steel ball 29 with 30 sealing surface of reversing shaft uses inner circle grinding process, improves sealing performance, oil leak can be effectively prevent to glide, and ensures operator Member's personal safety, and it is easy for installation.As shown in figure 3, integrated form cylinder assembly throttles hydraulic control one-way valve 15, cylinder body and individual event Valve is integrated, and small product size is made to reduce, weight saving, realizes lightweight, which is to be directly installed on hydraulic control one-way valve In cylinder body pedestal, hydraulic medium pushes spool to open check valve by drawing hydraulic fluid port to enter in cylinder rod chamber, makes oil cylinder The hydraulic medium of rodless cavity returns to fuel tank, and one-way throttle valve is installed to after being integrated with connector on cylinder body pedestal, the hydraulic pressure of rodless cavity Medium realizes throttling during returning to fuel tank by the valve union that throttles, and the structure is primarily to solve product installation space Greatly, the problem of product weight is laid particular stress on, while solving the existing safety problem when booster occurs for oil pipe, it avoids driver's cabin and exists Situations such as shake is generated during declining.Chrome-plated process is used after inner wall of cylinder honing.Inner hole of cylinder chrome-plated process scheme is promoted Wearability and resistance to corrosion, hydraulic medium may be used anti-icing fluid and replace hydraulic oil, reduce use cost, while can solve Product loses the defect of function when certainly hydraulic oil solidifies under extremely cold environment.As shown in figure 4, integrated form pump housing assembly uses hand certainly Integral structure includes mainly rocking arm axle assembly 19, hydraulic pump shaft assembly 20, vent valve 18, commutation axle assembly 21, aluminium alloy hydraulic pressure Fuel tank 16 which is provided with electrically operated fuel pump inlet port 17；Push away port connection 22；Draw port connection 23；Pump housing oil suction connector 24；With The pump housing 25.The invention is by respectively increasing electrically operated fuel pump inlet port and the pump housing in aluminium alloy hydraulic oil container end face and pump body end surface Oil suction connector connect the inlet port of electrically operated fuel pump assembly with aluminium alloy hydraulic oil container end face inlet port, and electrically operated fuel pump is total At oil outlet and pump body end surface inlet port connect, by lower switch realization automatic lifting.When event occurs in electrically operated fuel pump assembly In the case of barrier, rocker arm shaft is manually operated, hydraulic pump shaft assembly is made to move reciprocatingly in the pump housing, by the oilhole on the pump housing, Hydraulic medium is drawn into reversing shaft and is pressurizeed, hydraulic medium is transmitted in oil cylinder by reversing shaft, realizes manual lifting, Auto-manual structure mainly solves manual operation intensity, keeps operating personnel convenient and strength-saving, while meeting a variety of operation moulds again Formula, adaptability are stronger.Piston rod uses 40Cr material solid forging techniques, piston rod outer surface to use Duplex Chromium Plating technique, First layer plates milky white chromium, thickness of coating 0.02-0.03mm, second layer hard chrome plating, thickness of coating 0.03-0.04mm, piston with For piston rod using being threadedly coupled, which both ensure that piston rod integral strength, in turn ensure the corrosion resistance of stopper rod and wear-resisting Property, corrosion resistance can promote 300h, and service life is by that can extend 1/3.

Claims (2)

1. a kind of durable, lightweight hydraulic lifting system, including hydraulic medium, electrically operated fuel pump assembly, Small Plunger Pump, Integrated form pump housing assembly, Mini oil tank, the pump housing, commutation axle assembly, pressure axle assembly, rocking arm axle assembly, Integral hydraulic oil cylinder Assembly, piston, guide sleeve, integrated form cylinder body and one-piece piston bar, it is characterised in that：Plunger pump, relay and switch installation It is fixed on motor, is connect electrically operated fuel pump assembly oil extracting mouth with the inlet port of integrated form pump housing assembly by oil pipe, then lead to It crosses oil pipe to connect electrically operated fuel pump assembly oil outlet with the oil inlet of integrated form pump housing assembly, finally by oil pipe by integrated form The hydraulic fluid port that pushes away of pump housing assembly is connect with the hydraulic fluid port that pushes away of Integral hydraulic oil cylinder assembly, the drawing hydraulic fluid port of integrated form pump housing assembly with it is integrated The drawing hydraulic fluid port of formula hydraulic cylinder assembly connects；Plunger pump, micro hydraulic fuel tank, piston, guide sleeve are made of aluminum alloy materials, Hydraulic medium replaces hydraulic oil, reversing shaft to be sealed using 6 sealing elements using anti-icing fluid, and reversing shaft and the pump housing are using cooperation Sealing, fit clearance 0.004-0.008mm, while increasing by one of waist type oil-recovery tank, using G10 steel balls, bullet inside reversing shaft Spring and bolt structure, steel ball and reversing shaft sealing surface use inner circle grinding process, integrated form cylinder assembly by hydraulic control one-way valve, Cylinder body and one-way throttle valve are integrated, and hydraulic control one-way valve is directly installed in cylinder body pedestal, after throttle valve is integrated with connector It is installed on cylinder body pedestal, auto-manual structure, packet is used using chrome-plated process integrated form pump housing assembly after inner wall of cylinder honing Include rocking arm axle assembly, hydraulic pump shaft assembly, vent valve, commutation axle assembly, aluminium alloy hydraulic oil container, connector and the pump housing；It is closed in aluminium Golden hydraulic oil container end face and pump body end surface respectively increase an oil suction connector, the inlet port and aluminum alloy melt of electrically operated fuel pump assembly The inlet port connection of pressure oil case end face, the oil outlet of electrically operated fuel pump assembly and the inlet port of pump body end surface connect, real by switching Hydraulic medium is drawn into reversing shaft and is pressurizeed by existing automatic lifting or manual operation rocker arm shaft；Piston uses screw thread with piston rod Connection.

2. one kind according to claim 1 is durable, lightweight hydraulic lifting system, it is characterised in that：Described work Stopper rod uses 40Cr material solid forging techniques, piston rod outer surface that Duplex Chromium Plating technique, first layer is used to plate milky white chromium, coating Thickness 0.02-0.03mm, second layer hard chrome plating, thickness of coating 0.03-0.04mm.