CN114233709B - Hydraulic device for compression type garbage truck and compression type garbage truck - Google Patents
Hydraulic device for compression type garbage truck and compression type garbage truck Download PDFInfo
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- CN114233709B CN114233709B CN202111646540.3A CN202111646540A CN114233709B CN 114233709 B CN114233709 B CN 114233709B CN 202111646540 A CN202111646540 A CN 202111646540A CN 114233709 B CN114233709 B CN 114233709B
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- 238000007906 compression Methods 0.000 title claims abstract description 35
- 230000006835 compression Effects 0.000 title claims abstract description 34
- 238000007790 scraping Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 24
- 239000003921 oil Substances 0.000 description 273
- 238000013016 damping Methods 0.000 description 18
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 9
- 239000012530 fluid Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic device for a compression type garbage truck and the compression type garbage truck. The hydraulic device of the present invention includes: the oil storage and supply part is used for providing oil required by the operation of the hydraulic device; a power plant, comprising: a pushing shovel power part, a sliding plate power part, a scraping plate power part, a lifting power part and a bucket turning power part; the control valve part is respectively connected with the oil storage and supply part and the power device and is used for controlling the oil in the oil storage and supply part to enter and exit the power device; the oil pump is arranged between the oil storage and supply part and the control valve part and is used for controlling oil in the oil storage and supply part to enter the control valve part; and the differential control part is arranged between the skateboard power part and the control valve part and is used for accelerating the operation of the skateboard power part. According to the invention, the differential control part is arranged on the hydraulic device of the compression type garbage truck, so that the oil in the oil cylinder can rapidly run, the operation time is shortened, and the garbage treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of garbage trucks, in particular to a hydraulic device for a compression type garbage truck and the compression type garbage truck.
Background
The compression garbage truck is an environmental sanitation truck for garbage collection and transportation, and has the characteristics of simplicity and convenience in garbage collection, large loading capacity and the like. However, in the actual use process, there is a problem that: the existing compression type garbage truck hydraulic system transmits power through a chassis engine power taking shaft, the power is certain, the speed of a hydraulic system executing mechanism cannot be increased under the condition that the pressure is met, when site operators perform press-fit circulation actions, the operation time cannot be shortened, and the garbage disposal efficiency is reduced.
Disclosure of Invention
According to the invention, the differential control part is arranged on the hydraulic device of the compression type garbage truck, so that the oil in the oil cylinder can rapidly run, the operation time is shortened, and the garbage treatment efficiency is improved.
In order to solve the above problems, the present invention provides a hydraulic device for a compression garbage truck, the hydraulic device comprising: the oil storage and supply part is used for providing oil required by the operation of the hydraulic device; a power plant, the power plant comprising: a pushing shovel power part, a sliding plate power part, a scraping plate power part, a lifting power part and a bucket turning power part; the control valve part is respectively connected with the oil storage and supply part and the power device and is used for controlling the oil in the oil storage and supply part to enter and exit the power device; the oil pump is arranged between the oil storage and supply part and the control valve part and is used for controlling oil in the oil storage and supply part to enter the control valve part; and the differential control part is arranged between the skateboard power part and the control valve part and is used for accelerating the operation of the skateboard power part.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: shortens the operation time and improves the garbage disposal efficiency. When the hydraulic device operates, the oil pump pumps the oil in the oil storage and supply part and inputs the oil into the control valve part, the control valve part regulates and controls the oil to enter each part of the power device, the oil passes through the differential control part before entering the power part of the sliding plate, the differential control part is arranged between the power part of the sliding plate and the control valve part, the differential control part accelerates the speed of the oil entering and exiting the power part of the sliding plate by changing the trend of the oil, and the power device regulates and controls the operation of each part by controlling the operation of the oil cylinder, so that the oil returns to the oil storage and supply part through the oil return pipeline. According to the invention, the differential control part is arranged on the hydraulic device, and can shorten the path of oil movement, so that the oil in the oil cylinder can rapidly run, the operation time is shortened, and the garbage disposal efficiency is improved.
In one example of the present invention, the control valve portion includes: the first control valve is arranged between the pushing shovel power part and the oil pump; the second control valve is arranged between the sliding plate power part and the oil pump; the third control valve is arranged between the scraper power part and the oil pump; the fourth control valve is arranged between the lifting power part and the oil pump; and the fifth control valve is arranged between the bucket turning power part and the oil pump.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: and controlling the oil to enter and exit the circuit of the power device. The first control valve is used for controlling the oil to enter the line of the pushing shovel power part, the second control valve is used for controlling the oil to enter the line of the sliding plate power part, the third control valve is used for controlling the oil to enter the line of the scraping plate power part, the fourth control valve is used for controlling the oil to enter the line of the lifting power part, the fifth control valve is used for controlling the oil to enter the line of the bucket turning power part, the lines of the oil entering the power device are different, and the motion states of the power device are also different.
In one example of the present invention, an oil pump includes: the first oil outlet is respectively connected with the first control valve, the second control valve and the third control valve and is used for providing oil for the pushing shovel power part, the sliding plate power part and the scraper power part; the second oil outlet is connected with the fourth control valve and the fifth control valve and is used for providing oil for the lifting power part and the bucket turning power part.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: guaranteeing the oil supply of the power device. The oil pump is divided into two independent oil outlets, so that the problem that the power device cannot realize cooperative operation and the operation efficiency of the power device is reduced due to the fact that a single oil outlet can be prevented; meanwhile, the inspection of oil discharge problem can be quickened by separating oil discharge, so that the hydraulic device can be quickly restored to operate.
In one example of the invention, the second oil outlet is also respectively connected with the first control valve, the second control valve and the third control valve, and the second oil outlet can also provide oil for the pushing shovel power part, the sliding plate power part and the scraping plate power part.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: and the working speed of the pushing shovel power part, the sliding plate power part and the scraping plate power part is improved. When the lifting power part and the bucket turning power part do not work, the first oil outlet and the second oil outlet can simultaneously provide oil for the pushing shovel power part, the sliding plate power part and the scraping plate power part, so that the working speeds of the pushing shovel power part, the sliding plate power part and the scraping plate power part are improved.
In one example of the present invention, the slide power section includes at least two slide cylinders, each of the at least two slide cylinders including: a first chamber, a second chamber; the differential control unit includes: a reversing valve; the reversing valve is connected with the first chamber and the second chamber respectively, and is used for enabling oil liquid in one of the first chamber and the second chamber to directly enter the other chamber.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the extension time of the slide plate cylinder is reduced, and the operation time is saved. The first chamber can be a rod cavity of the slide plate cylinder, the second chamber is a rodless cavity, or the first chamber is a rodless cavity of the slide plate cylinder, and the second chamber is a rod cavity. When the slide plate oil cylinder is at the highest position, the oil in the rod cavity is at the maximum value, the oil in the rodless cavity is at the minimum value, and the detection switch reads a signal to enable the reversing valve to be electrified, and the differential confluence is opened; in the process of downward movement of the slide plate cylinder, oil in the rod cavity is reduced, oil in the rod cavity is increased, and oil return in the rod cavity can only enter the rod cavity through the differential control part, so that the extension time of the slide plate cylinder is shortened, the quick movement of the rod cavity is realized, and the operation time is greatly saved.
In one example of the present invention, the differential control section further includes: a sequence valve; the pushing shovel power part includes pushing shovel hydro-cylinder, and the pushing shovel hydro-cylinder includes: a third chamber; wherein the sequence valve is arranged between the third chamber and the first chamber.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the pushing shovel is matched with the sliding plate, so that the compression of the garbage reaches a certain compression ratio. When the first chamber or the second chamber of the sliding plate oil cylinder is filled with oil, the sliding plate power part controls the sliding plate to shrink, meanwhile, the sequence valve of the differential control part is opened, the oil in the third chamber of the pushing shovel oil cylinder is communicated with the oil storage and supply part through the sequence valve, namely, when garbage is compressed, the pushing shovel is matched with the sliding plate, so that the compression of the garbage reaches a certain compression ratio.
In one example of the invention, the reversing valve is a plate-type electromagnetic reversing valve; and/or the sequence valve is a plug-in sequence valve.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the differential control unit is simplified and the differential control unit is allowed to perform an optimal speed increasing function. By selecting the plate type electromagnetic directional valve as the directional valve and the plug-in sequence valve as the sequence valve, the differential control unit can perform the function of optimal lifting oil operation while simplifying the structure of the differential control unit.
In one example of the invention, the skateboard power section and/or the screed power section includes: the buffer cylinder is provided with a buffer cavity and a buffer block.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the support stability of the oil cylinder is improved, the fatigue failure of the oil cylinder is delayed, and the service life of the oil cylinder is prolonged. When the common oil cylinder is impacted by high-speed load, the piston and the piston rod move quickly, so that the support stability is low, meanwhile, the quick movement of the piston can cause abrupt change of the pressure of hydraulic oil in the oil cavity, the impact on the piston and the cylinder body assembly is overlarge, and fatigue failure of the oil cylinder is easy to cause. According to the embodiment, the common oil cylinders in the sliding plate power part and the scraping plate power part are replaced by the buffer oil cylinders, so that the influence of impact on hydraulic components can be effectively reduced. The buffer cylinder is provided with the buffer cavity and the buffer block, when the buffer block is impacted by load, the buffer block is inserted into the buffer cavity, the outer surface of the buffer block and the inner surface of the buffer cavity form an annular damping hole, hydraulic oil in the working cavity slowly flows out of the buffer cavity under the damping action of the damping hole, so that the moving speed of the piston is slowed down, the buffer action is achieved, the impact of oil to the cylinder assembly is reduced, the supporting stability of the cylinder is improved, the fatigue failure of the cylinder is delayed, and the service life of the cylinder is prolonged.
In one example of the present invention, a buffer chamber includes: the first buffer cavity is arranged between the bottom of the buffer cylinder and the piston rod; the second buffer cavity is arranged above the cylinder top sleeve of the buffer cylinder; the buffer block includes: the first buffer block is arranged on one side of the piston of the buffer oil cylinder, which is close to the bottom of the cylinder; the second buffer block is arranged on one side of the piston of the buffer oil cylinder, which is close to the cylinder top sleeve.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: and the oil cylinder is comprehensively protected. When the buffer oil cylinder is impacted by load to cause the piston to rapidly move, if the piston moves towards the cylinder bottom, the first buffer block is inserted into the first buffer cavity, an annular damping hole is formed on the outer surface of the first buffer block and the inner surface of the first buffer cavity, and hydraulic oil in the working cavity slowly flows out of the first buffer cavity under the damping action of the damping hole; if the piston moves towards the cylinder top sleeve, the second buffer block is inserted into the second buffer cavity, an annular damping hole is formed on the outer surface of the second buffer block and the inner surface of the second buffer cavity, and hydraulic oil in the working cavity slowly flows out of the second buffer cavity under the damping action of the damping hole. The design is provided with buffering in two movement directions of the piston, so that the buffering oil cylinder can be comprehensively protected from impact of rapid change of oil pressure on the piston and cylinder assembly.
The invention also provides a compression type garbage truck, which comprises the hydraulic device for the compression type garbage truck.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: and the working efficiency of the compression garbage truck is improved. The hydraulic device in the compression type garbage truck accelerates the operation speed of oil liquid, thereby accelerating the operation speed of the sliding plate in the compression type garbage truck, reducing the garbage loading time of the compression type garbage truck and further improving the working efficiency of the compression type garbage truck.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a connection structure of the differential control section in fig. 1.
Fig. 3 is a schematic diagram showing a specific structure of the differential control section.
Fig. 4 is a front view of the differential control section in fig. 3.
Fig. 5 is a left side view of the differential control section in fig. 3.
Fig. 6 is a right side view of the differential control section in fig. 3.
Fig. 7 is a plan view of the differential control section in fig. 3.
Fig. 8 is a schematic structural diagram of another view of the differential control section.
Fig. 9 is a schematic structural view of the buffer cylinder.
Fig. 10 is a schematic structural view of a compression garbage truck.
Reference numerals illustrate:
100-hydraulic means; 110-an oil storage and supply part; 111-oil drain ball valve; 112-an oil return filter; 113-a liquid level switch; 114-an air cleaner; 115-an oil absorption filter; 116-level gauge; 117-shut-off valve; 120-power plant; 121-a push shovel power part; 121-1-a push shovel oil cylinder; 121-1 a-a third chamber; 122-a skateboard power section; 122-1-at least two slide plate cylinders; 122-1 a-a first chamber; 122-1 b-a second chamber; 123-a scraper power section; 124-lifting the power section; 125-a bucket turning power part; 130-a control valve section; 131-a first control valve; 132-a second control valve; 133-a third control valve; 134-fourth control valve; 135-a fifth control valve; 140-an oil pump; 141-a first oil outlet; 142-a second oil outlet; 150-a differential control unit; 151-reversing valve; 152-a one-way valve; 153-sequence valve; 154-valve block; 161-oil return line; 162-oil outlet line; 170-a buffer oil cylinder; 171-a buffer chamber; 171-1-a first buffer chamber; 171-2-a second buffer chamber; 172-buffer blocks; 172-1-a first buffer block; 172-2-second buffer blocks; 173-cylinder bottom; 174-piston rod; 175-cylinder top sleeve; 176-piston; 200-compression garbage truck; 210-pushing plate; 220-skateboard; 230-scraping plate; 240-hopper; 250-turning over the barrel rack.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Embodiment one:
Referring to fig. 1, the present embodiment provides a hydraulic device for a compression type garbage truck, the hydraulic device 100 including: the oil storage and supply part 110, the oil storage and supply part 110 is used for providing oil required by the operation of the hydraulic device 100; power plant 120, power plant 120 includes: a pushing shovel power part 121, a sliding plate power part 122, a scraping plate power part 123, a lifting power part 124 and a bucket turning power part 125; a control valve part 130, wherein the control valve part 130 is respectively connected with the oil storage and supply part 110 and the power device 120, and the control valve part 130 is used for controlling the oil in the oil storage and supply part 110 to enter and exit the power device 120; an oil pump 140, the oil pump 140 being disposed between the oil storage and supply portion 110 and the control valve portion 130, the oil pump 140 being configured to control oil in the oil storage and supply portion 110 to enter the control valve portion 130; differential control unit 150. Differential control unit 150 is provided between slide power unit 122 and control valve unit 130. Differential control unit 150 is used to accelerate the operation of slide power unit 122.
Wherein, the oil storage supply part 110 includes: an oil drain ball valve 111, an oil return filter 112, a liquid level switch 113, an air filter 114, an oil suction filter 115, a liquid level meter 116 and a stop valve 117. The oil return filter 112 is connected to the oil return line 161 for cleaning the oil returned via the oil return line 161. The oil suction filter 115 is connected to the oil outlet line 162 for cleaning the oil outputted through the oil outlet line 162. A shut-off valve 117 is provided on the oil outlet line 162 for controlling whether oil is output. The oil return filter 112 uses a 10 mu high-precision glass filter element with a differential pressure transmitter and a bypass valve. The oil reservoir and supply portion 110 functions as an oil tank in the hydraulic device 100, and is used for outputting and recovering oil required for the operation of the hydraulic device 100.
In the power device 120, the pushing shovel power part 121 controls the movement of the pushing shovel in the garbage truck mainly by controlling the operation of the oil cylinder; the slide plate power part 122 controls the movement of the slide plate in the garbage truck mainly by controlling the operation of the oil cylinder; the scraper power part 123 controls the movement of the scraper in the garbage truck mainly by controlling the operation of the oil cylinder; the lifting power part 124 controls the movement of the filler in the garbage truck mainly by controlling the operation of the oil cylinder; the bucket turning power part 125 controls the turning motion of the garbage bucket mainly by controlling the operation of the oil cylinder. The pushing shovel power part 121, the sliding plate power part 122 and the scraping plate power part 123 are operated separately and do not carry out linkage; the lifting power part 124 and the bucket turning power part 125 are operated separately and are not linked.
The control valve portion 130 is of a five-way valve structure and is connected with the power device 120, and the control valve portion 130 can control whether oil in the oil storage and supply portion 110 enters the push shovel power portion 121, the slide plate power portion 122, the scraper power portion 123, the lifting power portion 124 and the bucket turning power portion 125 in the power device 120. Safety protection valves are provided on the oil inlets of the control valve part 130.
When the hydraulic device 100 operates, the oil pump 140 pumps the oil in the oil storage and supply part 110 and inputs the oil into the control valve part 130, the control valve part 130 regulates and controls each part of the oil entering the power device 120, the oil passes through the differential control part 150 before entering the slide plate power part 122, the differential control part 150 accelerates the speed of the oil entering and exiting the slide plate power part 122 by changing the trend of the oil, the power device 120 regulates and controls the operation of each part by controlling the operation of the oil cylinder, and the oil returns to the oil storage and supply part 110 through the oil return pipeline 161.
The hydraulic device 100 of this embodiment, by providing the differential control portion 150, enables the oil in the oil cylinder to rapidly run, shortens the operation time, and improves the efficiency of garbage disposal.
Embodiment two:
On the basis of the first embodiment, referring to fig. 1, the control valve portion 130 includes: a first control valve 131, the first control valve 131 being disposed between the push shovel power part 121 and the oil pump 140; a second control valve 132, the second control valve 132 being disposed between the sled power section 122 and the oil pump 140; a third control valve 133, the third control valve 133 being provided between the squeegee power section 123 and the oil pump 140; a fourth control valve 134, the fourth control valve 134 being disposed between the lifting power portion 124 and the oil pump 140; a fifth control valve 135, the fifth control valve 135 being provided between the tub turning power portion 125 and the oil pump 140.
The control valve part 130 is of a five-joint valve structure, and is respectively a push shovel control joint, a slide plate control joint, a scraper control joint, a lifting control joint and a bucket turning control joint. A first control valve 131 is arranged on the pushing shovel control unit, a second control valve 132 is arranged on the sliding plate control unit, a third control valve 133 is arranged on the scraping plate control unit, a fourth control valve 134 is arranged on the lifting control unit, and a fifth control valve 135 is arranged on the bucket turning control unit.
The first control valve 131 is used for controlling the oil to enter the line of the pushing shovel power part 121, the second control valve 132 is used for controlling the oil to enter the line of the sliding plate power part 122, the third control valve 133 is used for controlling the oil to enter the line of the scraping plate power part 123, the fourth control valve 134 is used for controlling the oil to enter the line of the lifting power part 124, the fifth control valve 135 is used for controlling the oil to enter the line of the bucket turning power part 125, the lines of the oil entering the parts of the power device 120 are different, and the motion states of the parts of the power device 120 are also different.
The control valve portion 130 is provided with an independent control valve corresponding to each department of the power plant 120, so that the control of each department of the power plant 120 is facilitated, and the control valve portion is prevented from being difficult to operate due to damage of one control valve and is convenient to maintain.
Embodiment III:
On the basis of the second embodiment, referring to fig. 1, the oil pump 120 includes: the first oil outlet 141, the first oil outlet 141 is connected with the first control valve 131, the second control valve 132 and the third control valve 133 respectively, and the first oil outlet 141 is used for providing oil for the push shovel power part 121, the slide plate power part 122 and the scraper power part 123; the second oil outlet 142, the second oil outlet 142 is connected with the fourth control valve 134 and the fifth control valve 135, and the second oil outlet 142 is used for providing oil for the lifting power part 124 and the bucket turning power part 125.
The oil pump 120 is a duplex gear pump, and is provided with two independent oil suction ports and an oil outlet, the oil suction ports are respectively connected with the oil storage and supply part 110 through hydraulic rubber pipes, the oil outlet is respectively connected with the P1 port and the P2 port of the control valve part 130 through the hydraulic rubber pipes, and the P1 port and the P2 port are respectively provided with safety protection valves.
The oil outlet of the oil pump 120 comprises a first oil outlet 141 and a second oil outlet 142, the first oil outlet 141 is connected with a P1 port of the control valve part 130, the P1 port is respectively connected with the first control valve 131, the second control valve 132 and the third control valve 133, and the first oil outlet 141 is used for providing oil for the push shovel power part 121, the slide plate power part 122 and the scraper power part 123; the second oil outlet 142 is connected with a P2 port of the control valve portion 130, the P2 port is respectively connected with the fourth control valve 134 and the fifth control valve 135, and the second oil outlet 142 is used for providing oil for the lifting power portion 124 and the bucket turning power portion 125.
The oil pump 120 is divided into two independent oil outlets, so that the problem that the power device cannot realize cooperative operation caused by a single oil outlet and the operation efficiency of the power device 120 is reduced can be prevented; meanwhile, the oil discharge is separated, so that the oil discharge problem can be checked quickly, and the hydraulic device 100 can be quickly restored to operate.
In a specific embodiment, a barrel turning cylinder is arranged in the barrel turning power part 125, when the barrel turning control valve core is in the lower position, the oil output by the second oil outlet 142 enters a rod cavity of the barrel turning cylinder through a P2-A5 liquid path, and the oil in the rodless cavity returns to the oil storage and supply part 110 through a B5-T1 liquid path. When the barrel turning control linkage valve core is in the upper position, the oil output by the second oil outlet 142 enters a rodless cavity of the barrel turning oil cylinder through a P2-B5 liquid path, and the oil with the rod cavity returns to the oil storage and supply part 110 through an A5-T1 liquid path. When the bucket turning control valve core is in the middle position, the oil ports A5 and B5 are cut off. The rod cavity of the bucket-turning cylinder is provided with a safety protection valve.
In a specific embodiment, a lift cylinder is disposed in the lift power portion 124, and when the lift control spool is in the down position, the oil output from the second oil outlet 142 enters the rodless cavity of the lift cylinder via the P2-A4 fluid path, and the oil in the rod cavity returns to the oil reservoir 110 via the B4-T1 fluid path. When the lifting control linkage valve core is in the upper position, the oil output by the second oil outlet 142 enters a rod cavity of the lifting oil cylinder through a P2-B4 liquid path, and the oil without the rod cavity returns to the oil storage and supply part 110 through an A4-T1 liquid path. When the lifting control valve core is in the middle position, the oil ports A4 and B4 are cut off.
Embodiment four:
on the basis of the third embodiment, referring to fig. 1, the second oil outlet 142 is further connected to the first control valve 131, the second control valve 132 and the third control valve 133, and the second oil outlet 142 can also provide oil to the push shovel power portion 121, the slide plate power portion 122 and the scraper power portion 123.
When the lifting power part 124 and the bucket turning power part 125 do not work, the P1 port and the P2 port are combined, and the first oil outlet 141 and the second oil outlet 142 can simultaneously provide oil for the push shovel power part 121, the slide plate power part 122 and the scraper power part 123, so that the working speeds of the push shovel power part 121, the slide plate power part 122 and the scraper power part 123 are improved.
In a specific embodiment, a scraper cylinder is disposed in the scraper power portion 123, when the scraper control valve core is in the lower position, the oil output from the first oil outlet 141 passes through the P1-A3 liquid path, the oil output from the second oil outlet 142 passes through the P2-A3 liquid path, and enters the rodless cavity of the scraper cylinder, and the oil with the rod cavity returns to the oil storage and supply portion 110 through the B3-T1 liquid path. When the scraper control linkage valve core is in the upper position, the oil output by the second oil outlet 142 enters a rod cavity of the scraper oil cylinder through a P2-B3 liquid path, and the oil without the rod cavity returns to the oil storage and supply part 110 through an A3-T1 liquid path. When the scraper blade control valve core is in the middle position, the oil ports A3 and B3 are cut off. The rod cavity of the scraper oil cylinder is provided with a safety protection valve.
In a specific embodiment, the slide plate cylinder 122-1 is disposed in the slide plate power portion 122, when the slide plate control valve element is in the lower position, the oil output from the first oil outlet 141 passes through the P1-A2 fluid path, the oil output from the second oil outlet 142 passes through the P2-A2 fluid path, and enters the rodless cavity of the slide plate cylinder 122-1, and the oil with the rod cavity returns to the oil storage and supply portion 110 through the B2-T1 fluid path. When the slide control valve core is in the upper position, the oil output by the second oil outlet 142 enters the rod cavity of the slide cylinder 122-1 through the P2-B2 liquid path, and the oil without the rod cavity returns to the oil storage and supply part 110 through the A2-T1 liquid path. When the slide plate control valve core is in the middle position, the oil ports A2 and B2 are cut off.
In a specific embodiment, a push shovel cylinder is disposed in the push shovel power part 121, when the push shovel control valve element is in the lower position, the oil output by the first oil outlet 141 passes through the P1-A1 liquid path, the oil output by the second oil outlet 142 passes through the P2-A1 liquid path, and enters the rodless cavity of the push shovel cylinder, and the oil in the rod cavity returns to the oil storage and supply part 110 through the B1-T1 liquid path. When the push shovel control valve core is in the upper position, the oil output by the second oil outlet 142 enters a rod cavity of the push shovel oil cylinder through a P2-B1 liquid path, and the oil in the rod cavity returns to the oil storage and supply part 110 through an A1-T1 liquid path. When the push shovel control valve core is in the middle position, the oil ports A3 and B3 are cut off. The rod cavity of the push shovel oil cylinder is provided with a safety protection valve.
Fifth embodiment:
1-8, the skid power section 122 includes at least two skid cylinders 122-1, each of the at least two skid cylinders 122-1 respectively including: a first chamber 122-1a, a second chamber 122-1b; the differential control unit 150 includes: a reversing valve 151; wherein, the switching valve 151 is connected with the first chamber 122-1a and the second chamber 122-1b respectively, and the switching valve 151 is used for making the oil of one of the first chamber 122-1a and the second chamber 122-1b directly enter the other.
In a specific embodiment, the first chamber 122-1a is a rod-shaped chamber, the second chamber 122-1b is a rodless chamber, when the slide cylinder 122-1 is at the highest position, the oil in the first chamber 122-1a is at the maximum value, the oil in the second chamber 122-1b is at the minimum value, and a detection switch reads a signal to enable the reversing valve 151 to be powered on, and the differential confluence is opened; during the downward movement of the slide cylinder 122-1, the oil in the first chamber 122-1a decreases, the oil in the second chamber 122-1b increases, and the return oil in the first chamber 122-1a can only enter the second chamber 122-1b through P3. This design achieves rapid movement of the rodless cavity second chamber 122-1b, which greatly saves operating time.
Fig. 3 to 8 are specific schematic structural views of the differential control unit 150, and it can be seen that the valve block 154 is a base body of the differential control unit 150, the reversing valve 151 is disposed at an upper end of the valve block 154, the check valve 152 is disposed at a rear surface of the valve block 154, and the sequence valve 153 is disposed at a side surface of the valve block 154.
In one specific embodiment, the performance of the hydraulic device 100 is tested, and the skid power section 122 includes two skid cylinders 122-1 and the skid power section 123 includes two skid cylinders. The cylinder diameter of the slide plate cylinder 122-1 is 100mm, the rod diameter is 50 mm, the stroke is 800 mm, the cylinder diameter of the scraper cylinder is 90 mm, the rod diameter is 55 mm, the stroke is 500 mm, and the detection is performed under the conditions that the hydraulic oil temperature is 45 ℃ and the system flow is 80L/min. In the case where the differential control section 150 is not used: the extension time of the scraper cylinder is 4.8 seconds, the retraction time of the scraper cylinder is 3 seconds, the extension time of the slide plate cylinder 122-1 is 9.4 seconds, the retraction time of the slide plate cylinder 122-1 is 7.1 seconds, and the one-time circulation time is 24.3 seconds; in the case of using the differential control section 150: the extension time of the scraper cylinder is 4.8 seconds, the retraction time of the scraper cylinder is 3 seconds, the extension time of the slide cylinder 122-1 is 2.4 seconds, the retraction time of the slide cylinder 122-1 is 7.1 seconds, and the one-time cycle time is 17.2 seconds. As can be seen by comparison, the hydraulic device 100 using the differential control section 150 increases the speed of the entire cycle by 30% by reducing the extension time of the ram cylinder 122-1.
Example six:
On the basis of the fifth embodiment, referring to fig. 1 to 8, the differential control section 150 further includes: a sequence valve 153; the push shovel power part 121 includes a push shovel cylinder 121-1, and the push shovel cylinder 121-1 includes: a third chamber 121-1a; wherein the sequence valve 153 is disposed between the third chamber 121-1a and the first chamber 122-1a
In a specific embodiment, when the oil is fed into the rod cavity of the slide cylinder 122-1, the slide power part 122 controls the slide to retract, and simultaneously opens the sequence valve 153 of the differential control part 150, and the oil in the third cavity 121-1a of the push shovel cylinder 121-1 is communicated with the oil storage and supply part 110 through the sequence valve 153, that is, when the garbage is compressed, the push shovel is matched with the slide to enable the garbage to be compressed to reach a certain compression ratio.
Embodiment seven:
On the basis of the sixth embodiment, referring to fig. 1 to 8, the reversing valve 151 is a plate-type electromagnetic reversing valve; and/or the sequence valve 153 is a cartridge sequence valve.
The differential control portion 150 is further provided with a check valve 152, and the check valve 152 is disposed between the reversing valve 151 and the sequence valve 153, for limiting the flow direction of the oil in the differential control portion 150.
By selecting the plate-type electromagnetic directional valve as the directional valve 151, the plug-in type check valve as the check valve 152, and the plug-in type sequence valve as the sequence valve 153, the differential control unit 150 can be made to perform an optimal speed increasing function while simplifying the structure of the differential control unit 150.
Example eight:
1-9, the sled power section 122 and/or the squeegee power section 123 includes: the buffer cylinder 170, the buffer cylinder 170 is provided with a buffer chamber 171 and a buffer block 172.
The slide plate power part 122 and the scraper plate power part 123 are respectively provided with an oil cylinder, and the slide plate and the scraper plate move under the drive of the oil cylinders. When the common oil cylinder is impacted by high-speed load, the piston and the piston rod move quickly, so that the support stability is low, meanwhile, the quick movement of the piston can cause abrupt change of the pressure of hydraulic oil in the oil cavity, the impact on the piston and the cylinder body assembly is overlarge, and fatigue failure of the oil cylinder is easy to cause. In the present embodiment, the impact on the hydraulic components can be effectively reduced by replacing the common cylinders in the slide plate power portion 122 and the blade power portion 123 with the buffer cylinders 170. The buffer cylinder 170 is provided with the buffer cavity 171 and the buffer block 172, when being impacted by load, the buffer block 172 is inserted into the buffer cavity 171, the outer surface of the buffer block 172 and the inner surface of the buffer cavity 171 form annular damping holes (wherein the outer diameter of the buffer block 172 is smaller than the inner diameter of the buffer cavity 171), hydraulic oil in the working cavity slowly flows out of the buffer cavity 171 under the damping action of the damping holes, so that the moving speed of the piston is slowed down, the buffer action is played, the impact of oil to the cylinder assembly is reduced, the supporting stability of the cylinder is improved, the fatigue failure of the cylinder is delayed, and the service life of the cylinder is prolonged.
Example nine:
On the basis of embodiment eight, referring to fig. 1 to 9, the buffer chamber 171 includes: a first buffer chamber 171-1, the first buffer chamber 171-1 being disposed between a cylinder bottom 173 and a piston rod 174 of the buffer cylinder 170; the second buffer chamber 171-2, the second buffer chamber 171-2 is disposed above the cylinder top cover 175 of the buffer cylinder 170; the buffer block 172 includes: the first buffer block 172-1, the first buffer block 172-1 is disposed at one side of the piston 176 of the buffer cylinder 170 near the cylinder bottom 173; the second buffer block 172-2, the second buffer block 172-2 is disposed on a side of the piston 176 of the buffer cylinder 170 near the cylinder top cover 175.
When the piston 176 moves rapidly due to the impact of the load on the buffer cylinder 170, if the piston 176 moves toward the cylinder bottom 173, the first buffer block 172-1 is inserted into the first buffer cavity 171-1, the outer surface of the first buffer block 172-1 and the inner surface of the first buffer cavity 171-1 form a ring-shaped damping hole, and the hydraulic oil in the working cavity slowly flows out of the first buffer cavity 171-1 under the damping action of the damping hole; if the piston 176 moves toward the cylinder top cover 175, the second buffer block 172-2 is inserted into the second buffer chamber 171-2, the outer surface of the second buffer block 172-2 and the inner surface of the second buffer chamber 171-2 form a ring-shaped damping hole, and hydraulic oil in the working chamber slowly flows out of the second buffer chamber 171-2 under the damping action of the damping hole. The design sets buffering in two movement directions of the piston 176, so that the buffer oil cylinder 170 can be comprehensively protected from impact of rapid change of oil pressure on the piston 176 and cylinder assembly, the supporting stability of the buffer oil cylinder 170 is improved, fatigue failure of the buffer oil cylinder 170 is delayed, the service life of the buffer oil cylinder 170 is prolonged, and the buffer oil cylinder 170 is comprehensively protected
Example ten:
Referring to fig. 1-10, the present embodiment provides a compression type garbage truck 200, the compression type garbage truck 200 including the hydraulic device 100 described in embodiment one to embodiment nine.
The compression garbage truck 200 includes a hydraulic device 100, a push plate 210, a slide plate 220, a scraper 230, a hopper 240, and a bucket-turning rack 250. Push plate 210 cooperates with push blade power section 121, slide plate 220 cooperates with slide plate power section 122, scraper 230 cooperates with scraper power section 123, and bucket tipping frame 250 cooperates with bucket tipping power section 125.
In a specific embodiment, the bucket turning power part 125 controls the garbage bucket to turn over, the garbage in the garbage bucket is poured into the hopper 240, the slide plate power part 122 and the scraper blade power part 123 control the slide plate 220 and the scraper blade 230 to perform scraping and sliding actions, and the garbage in the hopper 240 is scraped into the compression vehicle; the pushing plate 210 is controlled by the pushing shovel power part 121 to compress garbage; finally, the hopper 240 is lifted by the lifting power part 124, and then the pushing plate 210 is pushed out by the pushing shovel power part 121 to finish the garbage unloading operation.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (8)
1. A hydraulic device for a compression garbage truck, characterized in that the hydraulic device (100) comprises:
The oil storage and supply part (110), the oil storage and supply part (110) is used for providing oil required by the operation of the hydraulic device (100);
A power plant (120), the power plant (120) comprising: a pushing shovel power part (121), a sliding plate power part (122), a scraping plate power part (123), a lifting power part (124) and a bucket turning power part (125);
A control valve portion (130), wherein the control valve portion (130) is respectively connected with the oil storage and supply portion (110) and the power device (120), and the control valve portion (130) is used for controlling oil in the oil storage and supply portion (110) to enter and exit the power device (120);
An oil pump (140), wherein the oil pump (140) is arranged between the oil storage and supply part (110) and the control valve part (130), and the oil pump (140) is used for controlling oil in the oil storage and supply part (110) to enter the control valve part (130);
a differential control unit (150), wherein the differential control unit (150) is provided between the skateboard power unit (122) and the control valve unit (130), and the differential control unit (150) is configured to accelerate the operation of the skateboard power unit (122);
the slide power portion (122) includes at least two slide cylinders (122-1), each of the at least two slide cylinders (122-1) includes:
A first chamber (122-1 a);
A second chamber (122-1 b);
the differential control unit (150) includes:
a reversing valve (151);
Wherein the reversing valve (151) is respectively connected with the first chamber (122-1 a) and the second chamber (122-1 b), and the reversing valve (151) is used for enabling oil liquid in one of the first chamber (122-1 a) and the second chamber (122-1 b) to directly enter the other chamber;
The first chamber (122-1 a) is a rod cavity of the slide plate cylinder (122-1), and the second chamber (122-1) is a rodless cavity; or (b)
The first chamber (122-1 a) is a rodless chamber of the slide plate cylinder (122-1), and the second chamber (122-1) is a rod chamber;
the differential control unit (150) further comprises:
a sequence valve (153);
The push shovel power part (121) comprises a push shovel oil cylinder (121-1), and the push shovel oil cylinder (121-1) comprises:
a third chamber (121-1 a);
wherein the sequence valve (153) is arranged between the third chamber (121-1 a) and the first chamber (122-1 a).
2. The hydraulic device according to claim 1, wherein the control valve portion (130) includes:
A first control valve (131), wherein the first control valve (131) is arranged between the push shovel power part (121) and the oil pump (140);
a second control valve (132), the second control valve (132) being provided between the slide plate power portion (122) and the oil pump (140);
a third control valve (133), the third control valve (133) being provided between the squeegee power section (123) and the oil pump (140);
a fourth control valve (134), the fourth control valve (134) being disposed between the lifting power portion (124) and the oil pump (140);
And a fifth control valve (135), wherein the fifth control valve (135) is arranged between the bucket turning power part (125) and the oil pump (140).
3. The hydraulic device according to claim 2, characterized in that the oil pump (140) comprises:
The first oil outlet (141) is respectively connected with the first control valve (131), the second control valve (132) and the third control valve (133), and the first oil outlet (141) is used for providing oil for the push shovel power part (121), the slide plate power part (122) and the scraper power part (123);
The second oil outlet (142) is connected with the fourth control valve (134) and the fifth control valve (135), and the second oil outlet (142) is used for providing oil for the lifting power part (124) and the bucket turning power part (125).
4. A hydraulic device according to claim 3, characterized in that the second oil outlet (142) is further connected to the first control valve (131), the second control valve (132), the third control valve (133), respectively, the second oil outlet (142) also being able to supply oil to the push shovel power part (121), the slide board power part (122), the scraper power part (123).
5. The hydraulic device of claim 1, wherein the hydraulic device is configured to,
The reversing valve (151) is a plate type electromagnetic reversing valve; and/or
The sequence valve (153) is a plug-in sequence valve.
6. The hydraulic device according to claim 1, characterized in that the skid power section (122) and/or the screed power section (123) comprise:
The buffer oil cylinder (170), a buffer cavity (171) and a buffer block (172) are arranged on the buffer oil cylinder (170).
7. The hydraulic device of claim 6, wherein the hydraulic device is configured to control the hydraulic device,
The buffer chamber (171) includes:
a first buffer chamber (171-1), wherein the first buffer chamber (171-1) is arranged between a cylinder bottom (173) of the buffer cylinder (170) and a piston rod (174);
The second buffer cavity (171-2) is arranged above a cylinder top sleeve (175) of the buffer cylinder (170);
The buffer block (172) includes:
The first buffer block (172-1), the said first buffer block (172-1) is set up in the piston (176) of the said buffer cylinder (170) is close to one side of the said cylinder bottom (173);
the second buffer block (172-2), the second buffer block (172-2) is set up in the piston (176) of the said buffer cylinder (170) is close to one side of the said cylinder top cover (175).
8. A compression garbage truck characterized in that the compression garbage truck (200) comprises a hydraulic device (100) according to any one of claims 1 to 7.
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| JP2007139142A (en) * | 2005-11-22 | 2007-06-07 | Jatco Ltd | Automatic transmission |
| CN201107598Y (en) * | 2007-11-22 | 2008-08-27 | 深圳东风汽车有限公司 | Electric liquor control system of garbage truck |
| JP2011208779A (en) * | 2010-03-30 | 2011-10-20 | Aisin Aw Co Ltd | Hydraulic control device |
| CN102915049B (en) * | 2012-10-30 | 2015-09-09 | 青岛同辉汽车技术有限公司 | Compression type garbage truck pressure control device |
| CN106678130B (en) * | 2017-02-16 | 2018-02-16 | 数源科技股份有限公司 | Standby enclosed variable speed pump control hydraulic system is installed on a kind of pure electric compression type garbage truck |
| CN108644163A (en) * | 2018-04-13 | 2018-10-12 | 合加新能源汽车有限公司 | A kind of garbage truck scrapes slide plate cycle operation hydraulic system |
| CN109538555B (en) * | 2018-12-04 | 2023-10-13 | 潍柴(扬州)特种车有限公司 | Energy-saving hydraulic system of garbage compression vehicle |
| CN112253559A (en) * | 2020-09-04 | 2021-01-22 | 长沙普罗科环境装备有限责任公司 | Pressure adjusting hydraulic circuit for compression type garbage truck, control method and compression type garbage truck |
| CN113482990B (en) * | 2021-07-06 | 2022-07-15 | 上海熙众新能源技术有限公司 | Compression garbage truck and hydraulic system thereof |
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