CN207080433U - The flow distributing system of oblique angle sweeper - Google Patents

Abstract

The utility model discloses a kind of flow distributing system of oblique angle sweeper, including oil pump, pivot angle reversal valve, pivot angle oil cylinder, round brush motor, constant flow control valve, hydraulic control one-way valve, repairing check valve, safety overflow valve and auxiliary overflow valve.The constant flow control valve includes adjustable throttling and pressure-compensated valve.Fluid is by splitting into two-way during work after oil pump, and fluid crosses pivot angle reversal valve through adjustable throttling and flow to pivot angle oil cylinder all the way, and another way fluid then flow to round brush motor through pressure-compensated valve, and last two-way fluid collaborates to fuel tank.Beneficial effect：The utility model is combined using simple Hydraulic Elements, solves the problems, such as that oblique angle sweeper swing angle is unmanageable and round brush motor and pivot angle oil cylinder work compound, ensure oblique angle sweeper can steadily, continue, safe operation.

Description

The flow distributing system of oblique angle sweeper

Technical field

It the utility model is related to a kind of flow distributing system of construction machinery product, the particularly flow of oblique angle sweeper point Match system, belong to technical field of engineering machinery.

Background technology

Current engineering machinery can increasingly be equipped with accessory and carry out operation, and wherein oblique angle sweeper is conventional road administration accessory. Existing engineering machinery can only typically export a kind of power source, i.e. fluid, and the working condition of oblique angle sweeper is typically more multiple Miscellaneous, its round brush motor and pivot angle oil cylinder are different to the demand of fluid.During oblique angle sweeper work, round brush motor demand fluid amount It is larger, and be always maintained at working condition, and pivot angle oil cylinder does pivot angle action by solenoid valve control when necessary, demand fluid amount compared with It is small, account for 4% or so of whole system flow.If the fluid amount for flowing into pivot angle oil cylinder it is too big or it is unstable can impact big, swing Angle is difficult to control, and there is also potential safety hazard.Require that round brush motor and pivot angle oil cylinder can be same during the operation of oblique angle sweeper corner When work, and conventional parallel hydraulic system because the outer load of round brush motor and pivot angle oil cylinder be change and it is widely different, can not Solves the problems, such as work compound well.

The content of the invention

Goal of the invention：The utility model is the shortcomings that overcoming above-mentioned prior art to exist proposition, and it aims to provide a kind of oblique The flow distributing system of angle sweeper, to realize that the complete machine of same power output can drive round brush motor and pivot angle oil cylinder to cooperate with Action, allows the steady continuous service of sleeve mechanism.

Technical scheme：A kind of flow distributing system of oblique angle sweeper, including oil pump, pivot angle reversal valve, pivot angle oil cylinder and Round brush motor, for fluid by splitting into two-way after oil pump, fluid flow to pivot angle oil cylinder through pivot angle reversal valve all the way, another during work Road binders liquid then flows into round brush motor, and last two-way fluid collaborates to fuel tank；The flow distributing system also includes constant flux control Valve；The constant flow control valve includes adjustable throttling and pressure-compensated valve；Fluid flows into pivot angle through adjustable throttling and changed all the way To valve, another way fluid flows into round brush motor through pressure-compensated valve；The pressure-compensated valve is by ensureing adjustable throttling A, B two Pressure difference value between point ensures that the flow for flowing through adjustable throttling fluid is constant.

Preference, to ensure that pivot angle oil cylinder will not produce displacement when not working because of outer load, the flow distributing system Also include hydraulic control one-way valve, the hydraulic control one-way valve is located between the pivot angle reversal valve and the pivot angle oil cylinder, and is formed and closed Lock loop.

Preference, for avoid because oil pump is stopped and caused by round brush motor damage, the flow distributing system also wraps Repairing check valve is included, the repairing check valve is in parallel with the round brush motor.

Preference, to avoid the damage of whole oil circuit and executive component, the flow distributing system also includes safety overflow Valve, the safety overflow valve are in parallel with the oil pump, and after oil liquid pressure exceedes safety value, fluid is direct by safety overflow valve Flow into fuel tank.

Preference, to ensure the smoothness of round brush motor operations, the flow distributing system also includes auxiliary overflow valve, institute The oil circuit that auxiliary overflow valve is formed with the pivot angle reversal valve, hydraulic control one-way valve, pivot angle oil cylinder is stated to be in parallel.

Beneficial effect：The utility model is combined using simple Hydraulic Elements, solves oblique angle sweeper angle of oscillation The problem of spending unmanageable and round brush motor and pivot angle oil cylinder work compound, ensure that oblique angle sweeper can be steady, lasting, safe Operation.

Brief description of the drawings

Fig. 1 is the schematic diagram of the utility model principle.

Embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples.

As shown in figure 1, a kind of flow distributing system of oblique angle sweeper, including oil pump 1, pivot angle reversal valve 2, pivot angle oil cylinder 3rd, round brush motor 4, constant flow control valve 5, hydraulic control one-way valve 6, repairing check valve 7, safety overflow valve 8 and auxiliary overflow valve 9.Work Fluid after oil pump 1 by splitting into two-way when making, and fluid flow to pivot angle oil cylinder 3 through pivot angle reversal valve 2 all the way, and another way fluid is then Round brush motor 4 is flowed into, last two-way fluid collaborates to fuel tank；The constant flow control valve 5 includes adjustable throttling 51 and pressure Recuperation valve 52；Fluid flows into pivot angle reversal valve 2 through adjustable throttling 51 all the way, and another way fluid is flowed into through pressure-compensated valve 52 and rolled Brush motor 4；The pressure-compensated valve 52 ensures to flow through adjustable by ensureing A, B point-to-point transmission pressure difference value of adjustable throttling 51 The flow of the fluid of choke valve 51 is constant.The hydraulic control one-way valve 6 is located between the pivot angle reversal valve 2 and the pivot angle oil cylinder 3, And form locked loop.The repairing check valve 7 is in parallel with the round brush motor 4.The safety overflow valve 8 and the oil pump 1 is in parallel, and after oil liquid pressure exceedes safety value, fluid flows directly into fuel tank by safety overflow valve 8.The auxiliary overflow valve 9 The oil circuit formed with the pivot angle reversal valve 2, hydraulic control one-way valve 6, pivot angle oil cylinder 3 is in parallel.

When pivot angle oil cylinder 3 and round brush motor 4 work simultaneously, adjustable throttling 51, safety overflow valve 8 and auxiliary are first set Help the corresponding safety value of overflow valve 9.Fluid after oil pump 1 by splitting into two-way, and fluid crosses pivot angle through adjustable throttling 51 all the way Reversal valve 2, hydraulic control one-way valve 6 flow to pivot angle oil cylinder 3；Another way fluid then flow to round brush motor 4 through pressure-compensated valve 52, finally Two-way fluid collaborates to fuel tank.Because the pressure-compensated valve 52 is by ensureing A, B point-to-point transmission pressure differential of adjustable throttling 51 Value is constant to ensure the flow for flowing through the fluid of adjustable throttling 51, then the flow for flowing into pivot angle oil cylinder 3 keeps stable, pivot angle oil cylinder The 3 driving steady pivot angles of sweeper, solve the problems, such as round brush motor 4 and the work compound of pivot angle oil cylinder 3.When pivot angle oil cylinder 3 moves to The pressure value that can cause 2 points of A, B in a flash of extreme position is equal, if now round brush motor 4 can be caused without auxiliary overflow valve 9 Caton phenomenon.Just due to the presence of auxiliary overflow valve 9, now fluid is without pivot angle reversal valve 2, and is flowed through auxiliary overflow valve 9 Enter fuel tank, ensure the smoothness of the work of round brush motor 4, and guarantor is played to pivot angle reversal valve 2, hydraulic control one-way valve 6, pivot angle oil cylinder 3 Shield acts on.

When pivot angle oil cylinder 3 does not work, i.e., pivot angle reversal valve 2 is in middle position, and during the work of round brush motor 4, fluid passes through all the way Adjustable throttling 51 flow to pivot angle reversal valve 2；Another way fluid then flow to round brush motor 4, last two-way through pressure-compensated valve 52 Fluid collaborates to fuel tank.Now round brush motor 4 Caton phenomenon will not occur because pivot angle oil cylinder 3 does not work, and can continue smooth work Make.In addition, because the hydraulic control one-way valve 6 is located between the pivot angle reversal valve 2 and the pivot angle oil cylinder 3, and form locking and return Road, pivot angle oil cylinder 3 is not produced displacement because of outer load, improve the security of oblique angle sweeper.

Because the high speed rotation of oblique angle sweeper round brush causes its inertia larger, when oil pump 1 does not work, round brush motor 4 The rise of former low pressure chamber pressure value moment, former high pressure chest forms parital vacuum, easily damages round brush motor 4.Because this practicality is new Repairing check valve 7 in type flow distributing system is in parallel with the round brush motor 4, when oil pump 1 does not work, repairing check valve 7 can realize hydrostatic stopping brake, prevent round brush motor 4 by the fluid of former low-pressure area to the former high pressure chest repairing of round brush motor 4 Damage.

Although be described in detail above to the utility model in conjunction with the embodiments, the technology people of the technical field Member can also be changed or be changed to above-described embodiment it is understood that on the premise of the utility model aims are not departed from, Still fall in the scope of protection of the utility model.

Claims (5)

1. a kind of flow distributing system of oblique angle sweeper, including oil pump（1）, pivot angle reversal valve（2）, pivot angle oil cylinder（3）And rolling Brush motor（4）, fluid passes through oil pump during work（1）After split into two-way, fluid is through pivot angle reversal valve all the way（2）It flow to pivot angle oil Cylinder（3）, another way fluid then flows into round brush motor（4）, last two-way fluid collaborates to fuel tank；It is characterized in that：The flow Distribution system also includes constant flow control valve（5）；The constant flow control valve（5）Including adjustable throttling（51）And pressure compensation Valve（52）；Fluid is through adjustable throttling all the way（51）Flow into pivot angle reversal valve（2）, another way fluid is through pressure-compensated valve（52）Stream Enter round brush motor（4）；The pressure-compensated valve（52）By ensureing adjustable throttling（51）A, the pressure difference value of B point-to-point transmissions comes true Guarantor flows through adjustable throttling（51）The flow of fluid is constant.

2. the flow distributing system of oblique angle sweeper according to claim 1, it is characterised in that：The flow distributing system Also include hydraulic control one-way valve（6）, the hydraulic control one-way valve（6）Located at the pivot angle reversal valve（2）With the pivot angle oil cylinder（3）It Between, and form locked loop.

3. the flow distributing system of oblique angle sweeper according to claim 2, it is characterised in that：The flow distributing system Also include repairing check valve（7）, the repairing check valve（7）With the round brush motor（4）It is in parallel.

4. the flow distributing system of oblique angle sweeper according to claim 3, it is characterised in that：The flow distributing system Also include safety overflow valve（8）, the safety overflow valve（8）With the oil pump（1）It is in parallel, oil liquid pressure exceedes safety value Afterwards, fluid passes through safety overflow valve（8）Flow directly into fuel tank.

5. the flow distributing system of oblique angle sweeper according to claim 4, it is characterised in that：The flow distributing system Also include auxiliary overflow valve（9）, the auxiliary overflow valve（9）With the pivot angle reversal valve（2）, hydraulic control one-way valve（6）, pivot angle oil Cylinder（3）The oil circuit of formation is in parallel.