CN105156381B - Suction nozzle balance device for special sanitation truck - Google Patents
Suction nozzle balance device for special sanitation truck Download PDFInfo
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- CN105156381B CN105156381B CN201510619896.6A CN201510619896A CN105156381B CN 105156381 B CN105156381 B CN 105156381B CN 201510619896 A CN201510619896 A CN 201510619896A CN 105156381 B CN105156381 B CN 105156381B
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- way valve
- suction nozzle
- oil
- valve
- mouths
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Abstract
The invention provides a suction nozzle balance device for a special sanitation truck. The suction nozzle balance device comprises a hydraulic system. An oil outlet of a hydraulic oil pump is connected with an oil inlet P of a three-position four-way valve and an oil inlet P1 of a two-position two-way valve through pipes in parallel. An opening A and an opening B of the three-position four-way valve are connected with a rodless cavity and a rod cavity of a suction nozzle lifting oil cylinder through pipes respectively. The meso-position function of the three-position four-way valve is that A and T are through, and P and B are not through. An oil outlet A1 of the two-position two-way valve is connected with an oil inlet P2 of a pressure reduction valve through a pipe. An oil outlet A2 of the pressure reduction valve is connected between the opening B of the three-position four-way valve and the rod cavity of the suction nozzle lifting oil cylinder through pipes. An oil drainage opening T2 of the pressure reduction valve is connected an opening T of the three-position four-way valve and an opening T of a valve for controlling other actions in parallel. The suction nozzle balance device has the beneficial effects that stepless adjusting is conducted on the grounding pressure of a suction nozzle when the special sanitation truck works, wear is reduced, and the service life is prolonged.
Description
Technical field
The present invention relates to sanitation equipment field, particularly, special sanitation vehicle suction nozzle ground pressure bascule.
Background technology
With scientific and technological progress, the fast development of mechanical automation, sanitation equipment field also obtain high speed development, at present,
The suction nozzle that known special sanitation vehicle is used is used as lifting drive using hydraulic pressure, pneumatic element by the flexible connection such as chain,
Gravity after suction nozzle ground connection only relies on mechanical spring to carry out ground pressure balance, the maximum drawing of spring when suction nozzle is contacted with ground
Power design is generally 80 60 the percent to percent of suction nozzle self gravitation, cannot otherwise ensure that suction nozzle is accurately grounded.
But during actual job, suction nozzle upper surface can be subjected to the atmospheric pressure that negative pressure causes in suction nozzle, suction nozzle
The projected area of upper surface is larger, and the pressure is often also big than the gravity of suction nozzle itself, and the part such as suction nozzle road wheel is being inhaled
Mouth is conducted oneself with dignity with the double reaction plus of suction nozzle upper surface atmospheric pressure, and quick abrasion, service life are short.
The content of the invention
It is short in order to overcome the parts such as existing special sanitation vehicle suction nozzle road wheel to bear big pressure, quick abrasion, service life
Problem, the present invention provides a kind of suction nozzle pressure equaliser, and the device can balance suction nozzle road wheel and bear pressure total value
More than 80 percent, the pressure-bearing of each part of suction nozzle is substantially reduced in operation process, so as to reduce abrasion, prolongation uses the longevity
Life.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of bascule of special sanitation vehicle suction nozzle, including hydraulic system, hydraulic system includes hydraulic oil pump, hydraulic pressure
Fuel tank, three-position four-way valve, 2/2-way valve, air relief valve, suction nozzle hoist cylinder,
The oil-out of hydraulic oil pump is by pipeline and the oil inlet P and the oil inlet P 1 of 2/2-way valve of three-position four-way valve
It is in parallel；
A, B mouth of three-position four-way valve connects respectively rodless cavity, the rod chamber of suction nozzle hoist cylinder, 3-position 4-way by pipeline
The Median Function of valve is the logical T of A, and P, B are obstructed；
The oil-out A1 of 2/2-way valve is connected by pipeline with the oil inlet P 2 of air relief valve, and the oil-out A2 of air relief valve leads to
Cross pipeline to be connected between the B mouths of three-position four-way valve and the rod chamber of suction nozzle hoist cylinder, the drain tap T2 of air relief valve and three
The T mouths of the T mouths of cross valve and the valve for controlling other actions are in parallel；
When 2/2-way valve is closed, control three-position four-way valve is capable of achieving the independent lifting action of suction nozzle；
In work pattern, the multiple middle position of three-position four-way valve opens 2/2-way valve, by adjust the pressure of air relief valve so as to
Oil cylinder pulling force f1 is adjusted, suction nozzle pressure F is close to zero.
The know-why of the present invention is that a shunting decompression loop is arranged in loop in suction nozzle liter by control, and shunting decompression is returned
Road has controllable, decompression, pressure adjustable function, when suction nozzle participation device operation, opens shunting decompression loop and lifts to suction nozzle
Oil cylinder or cylinder one adjustable adherence pressure of offer, and the normal operation of other shunt circuits is not affected, the pressure can
The size of negative pressure is effectively adjusted in projected area, suction nozzle according to suction nozzle upper surface, so that each part pressure-bearing of suction nozzle reaches
To ideal value.
The invention has the beneficial effects as follows, step-less adjustment is carried out to suction nozzle ground pressure during special sanitation vehicle operation, reduce mill
Damage, increase the service life.
Description of the drawings
With reference to the accompanying drawings and examples the present invention is further described.
Fig. 1 is the suction nozzle stress diagram of the present invention.
Fig. 2 is the control loop schematic diagram of the present invention.
1. hydraulic oil pump in figure；2. hydraulic oil container；3. three-position four-way valve；4. 2/2-way valve；5. reduce pressure
Valve；6. suction nozzle hoist cylinder；7th, 8. other actions of oil cylinder.
Specific embodiment
In the embodiment shown in fig. 1：F=(G+ (P2-P1) × A/)-f1。
Wherein：F- suction nozzle pressures；
G- suction nozzle self gravitations；
P1- suction nozzle chamber pressures；
P2- suction nozzles upper surface receives atmospheric pressure；
A/The planimetric area of-suction nozzle upper surface；
F1- oil cylinder pulling force.
As shown in Figure 2 in embodiment, the hydraulic system of suction nozzle pressure equaliser of the present invention includes hydraulic oil pump 1, hydraulic pressure
Fuel tank 2, three-position four-way valve 3,2/2-way valve 4, air relief valve 5, suction nozzle hoist cylinder 6, the oil-out of hydraulic oil pump passes through pipeline
In parallel with the oil inlet P 1 of the oil inlet P of three-position four-way valve 3 and 2/2-way valve 4, A, B mouth of three-position four-way valve 3 leads to respectively
Rodless cavity, rod chamber that pipeline connects suction nozzle hoist cylinder are crossed, the Median Function of three-position four-way valve 3 is the logical T of A, and P, B are obstructed.Two
The oil-out A1 of position two-way valve 4 is connected by pipeline with the oil inlet P 2 of air relief valve 5, and the oil-out A2 of air relief valve 5 passes through pipeline
It is connected between the B mouths of three-position four-way valve 3 and the rod chamber of suction nozzle hoist cylinder, the drain tap T2 of air relief valve 5 and 3-position 4-way
The T mouths of the T mouths of valve 3 and the valve for controlling other actions are in parallel.
When 2/2-way valve 4 is closed, control three-position four-way valve 3 is capable of achieving the independent lifting action of suction nozzle, in work pattern
When, the multiple middle position of three-position four-way valve 3 opens 2/2-way valve 4, by adjusting the pressure of air relief valve 5 so as to adjust oil cylinder pulling force f1,
Suction nozzle pressure F is close to zero, each part pressure-bearing of suction nozzle is reduced to greatest extent, reduced each component wear of suction nozzle, prolong
Long life.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention
Various possible compound modes are no longer separately illustrated.
Claims (1)
1. a kind of bascule of special sanitation vehicle suction nozzle, including hydraulic system, it is characterised in that described hydraulic system bag
Include hydraulic oil pump（1）, hydraulic oil container（2）, three-position four-way valve（3）, 2/2-way valve（4）, air relief valve（5）, suction nozzle hoist cylinder
（6）,
The hydraulic oil pump（1）Oil-out by pipeline and the three-position four-way valve（3）Oil inlet P and described two
Two-way valve（4）Oil inlet P 1 it is in parallel；
The three-position four-way valve（3）A, B mouth respectively the suction nozzle hoist cylinder is connected by pipeline（6）Rodless cavity, have
Rod cavity, the three-position four-way valve（3）Median Function be the logical T mouths of A mouths, P mouths, B mouths are obstructed；The 2/2-way valve（4）'s
Oil-out A1 is by pipeline and the air relief valve（5）Oil inlet P 2 connect, the air relief valve（5）Oil-out A2 lead to
Cross pipeline and be connected to the three-position four-way valve（3）B mouths and the suction nozzle hoist cylinder（6）Rod chamber between pipeline
On, the air relief valve（5）Drain tap T2 and the three-position four-way valve（3）T mouths and control the valve of other actions
T mouths are in parallel；When the 2/2-way valve（4）Close, control the three-position four-way valve（3）It is capable of achieving suction nozzle individually to lift
Action；In work pattern, the three-position four-way valve（3）Multiple middle position, opens the 2/2-way valve（4）, by adjusting institute
State air relief valve（5）Pressure so as to adjust oil cylinder pulling force f1, be close to zero suction nozzle pressure F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619896.6A CN105156381B (en) | 2015-09-25 | 2015-09-25 | Suction nozzle balance device for special sanitation truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619896.6A CN105156381B (en) | 2015-09-25 | 2015-09-25 | Suction nozzle balance device for special sanitation truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105156381A CN105156381A (en) | 2015-12-16 |
| CN105156381B true CN105156381B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510619896.6A Active CN105156381B (en) | 2015-09-25 | 2015-09-25 | Suction nozzle balance device for special sanitation truck |
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| CN (1) | CN105156381B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255093A (en) * | 2017-06-07 | 2017-10-17 | 徐州徐工环境技术有限公司 | The hydraulic control system and sanitation equipment of sanitation equipment |
| CN108302081B (en) * | 2017-12-15 | 2021-02-02 | 纽威数控装备(苏州)股份有限公司 | Cylinder motion buffer control device |
| CN108105186B (en) * | 2017-12-18 | 2020-04-17 | 湖南纽恩驰新能源车辆有限公司 | Garbage truck hydraulic control system and garbage truck |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3626201A1 (en) * | 1986-08-01 | 1988-02-04 | Rexroth Mannesmann Gmbh | HYDRAULIC CONTROL DEVICE FOR A SWEEPER ROLL OF A SWEEPER, HOLDED BY TWO CYLINDERS |
| JP4295427B2 (en) * | 2000-11-28 | 2009-07-15 | Ｉｈｉ建機株式会社 | Fluid pressure circuit for garbage truck |
| CN100501007C (en) * | 2007-02-14 | 2009-06-17 | 长沙中联重工科技发展股份有限公司 | Suction sweeper truck with combined suction nozzle |
| CN104033433A (en) * | 2014-05-06 | 2014-09-10 | 长安大学 | Hydraulic control system based on single-engine road sweeper |
| CN204042082U (en) * | 2014-08-27 | 2014-12-24 | 中联重科股份有限公司 | Threeway operated proportional flow control valve, sweeping machine and hydraulic actuator control system thereof |
| CN104500485B (en) * | 2014-12-25 | 2017-06-06 | 柳工无锡路面机械有限公司 | A kind of road-surface milling machine scraper floating hydraulic system |
| CN104776073B (en) * | 2015-03-06 | 2016-10-05 | 福建龙马环卫装备股份有限公司 | Realize sanitation cart and sweep the hydraulic system that dish/suction nozzle floats |
| CN205089710U (en) * | 2015-09-25 | 2016-03-16 | 湖北合加环境设备有限公司 | Balancing unit of environmental sanitation special car suction nozzle |
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2015
- 2015-09-25 CN CN201510619896.6A patent/CN105156381B/en active Active
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| CN105156381A (en) | 2015-12-16 |
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Address after: 437100 238 Jin Gui Road, Xianning Economic Development Zone, Xianning, Hubei Patentee after: Ho Chi New Energy Automobile Co., Ltd. Address before: 437100 Changjiang Industrial Park No. 238, Xianning Economic Development Zone, Hubei Patentee before: Hubei Hejia Environment Equipment Co., Ltd. |
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