CN114873111B - Valve control two-stage slow descent system and method for carriage-detachable garbage truck - Google Patents
Valve control two-stage slow descent system and method for carriage-detachable garbage truck Download PDFInfo
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- CN114873111B CN114873111B CN202210149390.3A CN202210149390A CN114873111B CN 114873111 B CN114873111 B CN 114873111B CN 202210149390 A CN202210149390 A CN 202210149390A CN 114873111 B CN114873111 B CN 114873111B
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- deceleration
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 239000003921 oil Substances 0.000 description 48
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a valve control double-stage slow descending system and a method for a garbage truck with a detachable carriage, wherein an external main arm in the valve control double-stage slow descending system is provided with an angle sensor, the angle sensor is electrically connected with a control unit, and the control unit is respectively electrically connected with a first speed reduction unit and a second speed reduction unit; one end of the second speed reducing unit is connected with an oil tank of the lifting oil cylinder through a pipeline, the other end of the second speed reducing unit is connected with one end of the first speed reducing unit through a pipeline, and the other end of the first speed reducing unit is connected with the oil cylinder of the lifting oil cylinder through a pipeline; the valve control double-stage slow descent system method is realized through the system. The invention can realize twice speed reduction and lead the box body to slowly fall down.
Description
Technical Field
The invention relates to a valve control two-stage slow descent system and a method for a carriage detachable garbage truck, and belongs to the technical field of carriage detachable garbage trucks.
Background
The detachable garbage truck of carriage is because the load is heavier, and the box is obvious to the sub vehicle frame impact when falling, has obvious noise pollution not only, and frequent impact can cause sub vehicle frame fatigue damage, and life-span is shortened very obviously.
At present, two solutions to the problem exist in the industry, one is that buffering is performed in an oil cylinder, and the buffer device is added at the tail end of the oil cylinder to weaken the falling kinetic energy of the box body, so that the impact on the auxiliary frame is reduced. The in-cylinder buffering has higher requirement on the machining level of the oil cylinders, the consistency of the two oil cylinders is not easy to ensure, and the processing cost of the oil cylinders is higher. The other is throttling buffer, and the flow of the oil return system of the main arm oil cylinder is reduced by adding a special throttling device, so that the falling speed of the box body is reduced, and the impact is reduced. The method has poor performance under the heavy-load working condition, on one hand, if the throttle orifice is arranged too small, the falling speed of the box body is too slow, the overall working efficiency is affected, and on the other hand, if the throttle orifice is arranged too large, the speed reduction effect is not achieved, and the caliber of the throttle orifice is difficult to grasp.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a valve control two-stage slow descending system and a valve control two-stage slow descending method for a garbage truck with a detachable carriage, which can realize two-time speed reduction and enable a box body to slowly fall.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
on one hand, the invention provides a valve control two-stage slow descending system of a carriage detachable garbage truck, which comprises a first speed reducing unit, a second speed reducing unit, a lifting oil cylinder, an angle sensor and a control unit;
an angle sensor is arranged on the external main arm and is electrically connected with a control unit, and the control unit is respectively and electrically connected with a first speed reduction unit and a second speed reduction unit; one end of the second speed reducing unit is connected with an oil tank of the lifting oil cylinder through a pipeline, the other end of the second speed reducing unit is connected with one end of the first speed reducing unit through a pipeline, and the other end of the first speed reducing unit is connected with the oil cylinder of the lifting oil cylinder through a pipeline.
Further, the first deceleration unit comprises a bidirectional balance valve, an adjustable throttle valve and a deceleration triggering electromagnetic valve;
the deceleration triggering electromagnetic valve is connected with the adjustable throttle valve;
the adjustable throttle valve is connected with the two-way balance valve pipeline in parallel.
The pipeline is connected with the oil cylinder after the throttle orifice of the adjustable throttle valve and the valve port of the bidirectional balance valve are converged
Further, the second deceleration unit comprises a pilot pressure reducing control valve and a proportional valve;
the pilot pressure reducing control valve is connected with the proportional valve;
one end of the valve port of the proportional valve is connected with an oil tank of the lifting oil cylinder, and the other end of the valve port of the proportional valve is connected with the first speed reducing unit through a pipeline.
Further, the second deceleration unit comprises a three-way flow valve; the first valve port pipeline of the three-way flow valve is connected with an oil return port of the oil tank, the second valve port pipeline is connected with the oil inlet, the third valve port pipeline is connected with the feedback valve, and the feedback valve is connected with the oil drain port.
Further, the second deceleration unit includes a main relief valve; the main overflow valve is arranged between the oil return port and the three-way flow valve.
Further, the second deceleration unit includes a pressure reducing valve; the pressure reducing valve is arranged between the oil inlet and the pilot pressure reducing control valve.
On the other hand, the invention provides a valve control double-stage slow descending method of the carriage-detachable garbage truck, which is realized by adopting the valve control double-stage slow descending system of the carriage-detachable garbage truck.
Further, the valve control double-stage slow descent method of the carriage detachable garbage truck comprises the following steps of:
presetting a first deceleration angle and a second deceleration angle, wherein the second deceleration angle is smaller than the first deceleration angle;
responding to a first deceleration angle, powering on a deceleration triggering electromagnetic valve, opening a throttling hole of an adjustable throttle valve, wherein the caliber of the throttling hole is smaller than that of a valve port of a bidirectional balance valve, and returning oil for throttling to finish the first slow descent of the tank body;
and responding to the second deceleration angle, reducing the current flowing through the pilot pressure reducing control valve according to the preset current variation, controlling the reversing amplitude of the proportional valve by the pilot pressure reducing control valve according to the current variation, reducing the opening of a valve port of the proportional valve, and performing oil return throttling to complete the second descent control box body.
Compared with the prior art, the invention has the beneficial effects that:
the double-layer speed reduction is realized through the first speed reduction unit and the second speed reduction unit, the double-layer speed reduction device is suitable for the heavy load working condition of the garbage truck with the detachable carriage, and has higher efficiency and strong practicability.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a valve-controlled two-stage descent control system of a carriage-removable garbage truck according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a valve-controlled two-stage descent control system of a carriage-removable garbage truck according to the present invention;
FIG. 3 is a flow chart of one embodiment of a valve controlled dual stage descent control method for a carriage-removable type refuse vehicle according to the present invention;
in the figure: 1. a first deceleration unit; 2. a second deceleration unit; 3. a main arm; 4. a case; 5. an oil cylinder; 6. an angle sensor; 7. an auxiliary frame; 11. an adjustable throttle valve; 12. a deceleration triggering electromagnetic valve; 13. a two-way balancing valve; 21. a main overflow valve; 22. a pressure reducing valve; 23. a three-way flow valve; 24. a pilot pressure reducing control valve; 25. a proportional valve; 26. a feedback valve; 31. an oil return port; 32 oil inlets; 33. and (5) an oil drain port.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Example 1
The embodiment provides a valve control two-stage slow descending system of a garbage truck with a detachable carriage, which comprises a first speed reduction unit 1, a second speed reduction unit 2, a lifting oil cylinder, an angle sensor 6 and a control unit, and is characterized in that the valve control two-stage slow descending system comprises a first speed reduction unit 1, a second speed reduction unit 2, a lifting oil cylinder, an angle sensor 6 and a control unit.
The first speed reducing unit 1 and the second speed reducing unit 2 are both electrically connected with a control unit, the control unit is electrically connected with an angle sensor 6, the angle sensor 6 is arranged on the main arm 3, and the main arm 3 is connected with the box body 4 through a shackle.
Referring to fig. 2, one end of the second reduction unit 2 is connected with an oil tank of the lifting oil cylinder through a pipeline, the other end of the second reduction unit 2 is connected with one end of the first reduction unit 1 through a pipeline, and the other end of the first reduction unit 1 is connected with an oil cylinder 5 of the lifting oil cylinder through a pipeline.
In application, one end of the lifting oil cylinder is arranged on the main arm 3, the other end of the lifting oil cylinder is arranged on the auxiliary frame 7, and the auxiliary frame 7 is provided with the second speed reduction unit 2.
The double-layer speed reduction is realized through the first speed reduction unit and the second speed reduction unit, the double-layer speed reduction device is suitable for the heavy load working condition of the garbage truck with the detachable carriage, and has higher efficiency and strong practicability.
Example 2
On the basis of embodiment 1, the present embodiment describes in detail the first reduction unit 1 and the second reduction unit 2.
Referring to fig. 2, the first reduction unit 1 of the present embodiment includes a two-way balance valve 13, an adjustable throttle valve 11, and a reduction triggering solenoid valve 12. Wherein the deceleration triggering electromagnetic valve 12 is connected with the adjustable throttle valve 11; the adjustable throttle valve 11 and the two-way balancing valve 13 are connected in parallel. The pipeline is connected with the oil cylinder 5 after the throttle orifice of the adjustable throttle valve 11 and the valve port of the bidirectional balance valve 13 are converged.
In application, a first deceleration angle and a second deceleration angle are preset, wherein the second deceleration angle is smaller than the first deceleration angle.
When the included angle between the main arm 3 and the auxiliary frame 7 is larger than the first deceleration angle, and the deceleration triggering electromagnetic valve 12 is not electrified, the adjustable throttle valve 11 is in a closed state, and because the pressure of hydraulic oil is larger than the pressure preset value of the bidirectional balance valve 13, the hydraulic oil flows back to the second deceleration unit 2 through the bidirectional balance valve 13.
When the angle sensor 6 detects that the included angle between the main arm 3 and the auxiliary frame 7 is smaller than or equal to a first deceleration angle, the angle sensor 6 transmits signals to the control unit, the control unit controls the deceleration triggering electromagnetic valve 12 to be electrified, so that the throttle opening of the adjustable throttle valve 11 is opened, hydraulic oil flows back to the second deceleration unit 2 through the adjustable throttle valve 11, oil return throttling is achieved, the first descent control box body is completed, at the moment, the pressure of the hydraulic oil is smaller than the pressure preset value of the bidirectional balance valve 13, and the bidirectional balance valve 13 is in a closed state.
Referring to fig. 2, the second reduction unit 2 includes a pilot pressure reducing control valve 24, a proportional valve 25, a three-way flow valve 23, a main relief valve 21, and a pressure reducing valve 22. The pilot pressure reducing control valve 24 is connected with the proportional valve 25, one end of a valve port of the proportional valve 25 is connected with an oil tank of the lifting oil cylinder, and the other end of the valve port of the proportional valve is connected with the first speed reducing unit 1 through a pipeline.
In the application, when the device is in an initial state, the current flowing through the pilot pressure reducing control valve 24 is the upper limit value of the preset proportional regulating current value, and the valve port of the proportional valve 25 is in a full-open state.
When the angle sensor 6 detects that the included angle between the main arm 3 and the auxiliary frame 7 is smaller than or equal to the second deceleration angle, the angle sensor 6 transmits signals to the control unit, the control unit reduces the current flowing through the pilot pressure reducing control valve 24 according to the preset current variation, the pilot pressure reducing control valve 24 controls the reversing amplitude of the proportional valve 25 according to the current variation, the opening of the valve port of the proportional valve 25 is reduced, oil return throttling is achieved, and the second descent control box body is completed.
When the embodiment is applied, a first valve port pipeline of the three-way flow valve 23 is connected with an oil return port 31 of an oil tank, a second valve port pipeline is connected with an oil inlet 32, a third valve port pipeline is connected with a feedback valve 26, and the feedback valve 26 is connected with an oil drain port 33. The constant pressure difference between the front valve and the rear valve of the proportional valve 25 is ensured, and the flow of hydraulic oil is smoother and controllable when the opening of the valve port of the proportional valve 25 is regulated.
The main relief valve 21 is arranged between the oil return port 31 and the three-way flow valve 23, and the valve port size of the main relief valve 21 is regulated through the movement of the valve core of the main relief valve 21, so that the proportional speed regulation of hydraulic oil is realized.
The pressure reducing valve 22 is arranged between the oil inlet 32 and the pilot pressure reducing control valve 24, and provides pilot pressure for opening change of a valve port of the proportional valve 25.
When the included angle between the main arm 3 and the auxiliary frame 7 is smaller than or equal to a first deceleration angle, the angle sensor 6, the control unit, the bidirectional balance valve 13, the adjustable throttle valve 11 and the deceleration triggering electromagnetic valve 12 are mutually matched to realize first deceleration; when the included angle between the main arm 3 and the auxiliary frame 7 is smaller than or equal to the second deceleration angle, the pilot pressure reducing control valve 24, the proportional valve 25, the three-way flow valve 23, the main overflow valve 21 and the pressure reducing valve 22 are mutually matched, so that the second deceleration can be realized, the deceleration angle and the current variation can be adjusted according to actual requirements, the deceleration proportion can be adjusted, the buffering speed can be adjusted, and the applicability is improved.
Example 3
The embodiment introduces a valve control two-stage slow descent method of a carriage-detachable garbage truck, which is implemented by adopting the valve control two-stage slow descent system of the carriage-detachable garbage truck described in embodiment 2, and referring to fig. 3, the method comprises the following steps:
s1, presetting a first deceleration angle and a second deceleration angle, wherein the second deceleration angle is smaller than the first deceleration angle;
in application, the present embodiment also presets the amount of current variation flowing through the pilot pressure-reducing control valve 24 in response to the second deceleration angle; an upper limit value of the proportional adjustment current value; the pressure value of the bi-directional balancing valve.
S2, responding to a first deceleration angle, powering on a deceleration triggering electromagnetic valve 12 and opening a throttling hole of an adjustable throttle valve 11, wherein the caliber of the throttling hole is smaller than that of a valve port of a two-way balance valve 13, and throttling oil return to finish the first descent control box body;
and S3, responding to the second deceleration angle, reducing the current flowing through the pilot pressure reducing control valve 24 according to the preset current variation, controlling the reversing amplitude of the proportional valve 25 by the pilot pressure reducing control valve 24 according to the current variation, reducing the opening of the valve port of the proportional valve 25, throttling oil return, and completing the second slow descent box body.
According to the invention, the first deceleration angle and the second deceleration angle can be adjusted according to actual conditions; in response to the second deceleration angle, an amount of current variation flowing through the pilot pressure-reducing control valve; an upper limit value of the proportional adjustment current value; the pressure value of the bidirectional balance valve realizes accurate deceleration.
In summary, the embodiment of the invention not only can realize double deceleration, but also can adjust the deceleration proportion, the buffer speed and the control efficiency according to actual needs.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (4)
1. The method of the valve control double-stage slow descending system based on the carriage detachable garbage truck is characterized by comprising a first speed reduction unit (1), a second speed reduction unit (2), a lifting oil cylinder, an angle sensor (6) and a control unit;
an angle sensor (6) is arranged on the external main arm, the angle sensor (6) is electrically connected with a control unit, and the control unit is respectively and electrically connected with the first speed reduction unit (1) and the second speed reduction unit (2); one end of the second speed reducing unit (2) is connected with an oil tank of the lifting oil cylinder through a pipeline, the other end of the second speed reducing unit is connected with one end of the first speed reducing unit (1) through a pipeline, and the other end of the first speed reducing unit (1) is connected with an oil cylinder (5) of the lifting oil cylinder through a pipeline;
the first deceleration unit (1) comprises a bidirectional balance valve (13), an adjustable throttle valve (11) and a deceleration triggering electromagnetic valve (12); the deceleration triggering electromagnetic valve (12) is connected with the adjustable throttle valve (11); the adjustable throttle valve (11) and the bidirectional balance valve (13) are connected in parallel through pipelines; the pipeline is connected with the oil cylinder (5) after the throttle orifice of the adjustable throttle valve (11) and the valve port of the bidirectional balance valve (13) are converged;
the second speed reduction unit (2) comprises a pilot pressure reduction control valve (24) and a proportional valve (25); the pilot pressure reducing control valve (24) is connected with the proportional valve (25); one end of a valve port of the proportional valve (25) is connected with an oil tank of the lifting oil cylinder, and the other end of the proportional valve is connected with the first speed reducing unit (1) through a pipeline;
the method for the valve control double-stage slow descent system based on the carriage detachable garbage truck comprises the following steps of:
presetting a first deceleration angle and a second deceleration angle, wherein the second deceleration angle is smaller than the first deceleration angle;
responding to a first deceleration angle, powering on a deceleration triggering electromagnetic valve (12) and opening a throttling opening of an adjustable throttle valve (11), wherein the caliber of the throttling opening is smaller than that of a valve port of a bidirectional balance valve (13), and oil return throttling is carried out, so that a first descent control box body is completed;
and responding to the second deceleration angle, reducing the current flowing through the pilot pressure reducing control valve (24) according to the preset current variation, controlling the reversing amplitude of the proportional valve (25) by the pilot pressure reducing control valve (24) according to the current variation, reducing the opening of a valve port of the proportional valve (25), returning oil to throttle, and finishing the second slow descent box body.
2. The method of a valve controlled two-stage descent control system based on a carriage-removable garbage truck according to claim 1, characterized in that said second deceleration unit (2) comprises a three-way flow valve (23); the first valve port pipeline of the three-way flow valve (23) is connected with an oil return port (31) of an oil tank, the second valve port pipeline is connected with an oil inlet (32), the third valve port pipeline is connected with a feedback valve (26), and the feedback valve (26) is connected with an oil drain port (33).
3. The method of a valve controlled two-stage slow descent system based on a carriage-removable garbage truck according to claim 1, characterized in that the second reduction unit (2) comprises a main overflow valve (21); the main overflow valve (21) is arranged between the oil return port (31) and the three-way flow valve (23).
4. The method of a valve controlled two-stage descent control system based on a carriage-removable garbage truck according to claim 1, characterized in that said second deceleration unit (2) comprises a pressure reducing valve (22); the pressure reducing valve (22) is arranged between the oil inlet (32) and the pilot pressure reducing control valve (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149390.3A CN114873111B (en) | 2022-02-18 | 2022-02-18 | Valve control two-stage slow descent system and method for carriage-detachable garbage truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149390.3A CN114873111B (en) | 2022-02-18 | 2022-02-18 | Valve control two-stage slow descent system and method for carriage-detachable garbage truck |
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| Publication Number | Publication Date |
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| CN114873111A CN114873111A (en) | 2022-08-09 |
| CN114873111B true CN114873111B (en) | 2024-04-09 |
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| CN202210149390.3A Active CN114873111B (en) | 2022-02-18 | 2022-02-18 | Valve control two-stage slow descent system and method for carriage-detachable garbage truck |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870270A (en) * | 2010-05-12 | 2010-10-27 | 三一重机有限公司 | Mine self-discharging vehicle carriage floating descending control device |
| CN103754804A (en) * | 2014-01-23 | 2014-04-30 | 杭州爱知工程车辆有限公司 | Buffer control system of hydraulic aerial cage |
| CN106089828A (en) * | 2016-08-05 | 2016-11-09 | 杭州流控机器制造有限公司 | A kind of hydraulic control circuit for dumper |
| CN211663978U (en) * | 2019-12-26 | 2020-10-13 | 深圳东风汽车有限公司 | Self-unloading angle-adjustable hydraulic system of self-loading and unloading type garbage truck |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001233191A (en) * | 1999-12-16 | 2001-08-28 | Toyota Motor Corp | Deceleration controlling device for vehicle |
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2022
- 2022-02-18 CN CN202210149390.3A patent/CN114873111B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870270A (en) * | 2010-05-12 | 2010-10-27 | 三一重机有限公司 | Mine self-discharging vehicle carriage floating descending control device |
| CN103754804A (en) * | 2014-01-23 | 2014-04-30 | 杭州爱知工程车辆有限公司 | Buffer control system of hydraulic aerial cage |
| CN106089828A (en) * | 2016-08-05 | 2016-11-09 | 杭州流控机器制造有限公司 | A kind of hydraulic control circuit for dumper |
| CN211663978U (en) * | 2019-12-26 | 2020-10-13 | 深圳东风汽车有限公司 | Self-unloading angle-adjustable hydraulic system of self-loading and unloading type garbage truck |
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| CN114873111A (en) | 2022-08-09 |
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