CN210686487U - Hydraulic system of garbage compression box - Google Patents
Hydraulic system of garbage compression box Download PDFInfo
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- CN210686487U CN210686487U CN201920997361.6U CN201920997361U CN210686487U CN 210686487 U CN210686487 U CN 210686487U CN 201920997361 U CN201920997361 U CN 201920997361U CN 210686487 U CN210686487 U CN 210686487U
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 24
- 230000006835 compression Effects 0.000 title claims abstract description 23
- 238000007906 compression Methods 0.000 title claims abstract description 23
- 230000007306 turnover Effects 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 169
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to a hydraulic system of a garbage compression box, which comprises a hydraulic main path, a push shovel branch path and a turnover branch path, wherein the hydraulic main path comprises an oil supply main path and an oil return main path, the oil supply main path is provided with an oil pump, and the oil return main path is used for connecting an oil tank; the shovel pushing branch road is provided with a shovel pushing oil cylinder and a second three-position four-way valve, and the overturning branch road is provided with an overturning oil cylinder and a first three-position four-way valve. In hydraulic system, two work hydraulic fluid ports of each three-position four-way valve are connected with a rod cavity and a rodless cavity of the oil cylinder, the extension, retraction and stop of a rod of the oil cylinder can be realized by controlling the working position of each three-position four-way valve, the working positions of the three-position four-way valves are a left position, a middle position and a right position, the connection of an oil circuit in the hydraulic system is simple, the types and the number of adopted valves are less, more functions can be realized, the control is simple, the realization is easy, and the reliability is higher.
Description
Technical Field
The utility model relates to a hydraulic system of rubbish compression case.
Background
The garbage compression box is a special device which has the functions of garbage collection and compression, and the movable garbage compression box can be combined with a matched hook arm vehicle to finish the functions of transportation and self-unloading.
The existing hydraulic power unit of the garbage compression box is a valve control technology, double regulation of pressure and speed is realized by using an overflow valve and a speed regulating valve, the efficiency is low, the power consumption is high, and meanwhile, a tipping bucket oil cylinder is easy to shake and is unstable in operation, so that the garbage can be scattered in the loading and unloading process; in order to solve the problems, a patent application document with Chinese patent application publication No. CN107605830A discloses an electro-hydraulic servo power unit of a garbage compression box, which comprises an oil tank, an oil pump, a push plate oil cylinder and a tipping bucket oil cylinder, wherein the oil tank is connected with the oil pump, a servo motor is adopted to drive the oil pump to supply oil for a system, the output of the oil pump is divided into two paths, one path is connected with the push plate oil cylinder through a two-position four-way reversing valve and a two-position four-way guide valve, the other path is connected with the tipping bucket oil cylinder through a three-position four-way valve, and a bidirectional hydraulic lock is arranged on an oil path between the three-position four-way valve and; the push plate oil cylinder is operated by the cooperation of the two-position four-way valves, and when the median locking of the turnover oil cylinder is realized by the two-way hydraulic lock, the types and the number of the used valves are more, the complexity of a hydraulic oil way is increased, and the reliability of a hydraulic system is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic system of rubbish compression case for solve the comparatively complicated lower problem of reliability that leads to of current rubbish compression case hydraulic system.
In order to achieve the purpose, the utility model provides a hydraulic system of a garbage compression box, which comprises a hydraulic main path, a push shovel branch path and a turnover branch path, wherein the push shovel branch path and the turnover branch path are connected in parallel on the hydraulic main path; the hydraulic main path comprises an oil supply main path and an oil return main path, an oil pump is arranged on the oil supply main path, and the oil return main path is used for connecting an oil tank; a shovel oil cylinder is arranged on the shovel branch circuit, a turnover oil cylinder is arranged on the turnover branch circuit, a first three-position four-way valve is arranged on the turnover branch circuit, two working oil ports of the first three-position four-way valve are respectively connected with a rod cavity and a rodless cavity of the turnover oil cylinder, an oil inlet of the first three-position four-way valve is connected with an oil supply main path, and an oil return port of the first three-position four-way valve is connected with an oil return main path; the two working oil ports of the second three-position four-way valve are respectively connected with a rod cavity and a rodless cavity of the push shovel oil cylinder, an oil inlet of the second three-position four-way valve is connected with an oil supply main path, and an oil return port of the second three-position four-way valve is connected with an oil return main path.
The hydraulic system has the advantages that in the hydraulic system, the two working oil ports of each three-position four-way valve are connected with the rod cavity and the rodless cavity of the oil cylinder, the extension, retraction and stop of the rod of the oil cylinder can be realized by controlling the working position of each three-position four-way valve, the working positions of the three-position four-way valves are the left position, the middle position and the right position, the connection of an oil circuit in the hydraulic system is simple, the types and the number of adopted valves are small, more functions can be realized, the control is simple, the realization is easy, and the reliability is high.
Furthermore, because the pressure required in the working process of the push shovel oil cylinder is higher, in order to monitor the oil pressure in the working process of the push shovel oil cylinder, a pressure sensor is arranged on a pipeline of a working oil port of the second three-position four-way valve, which is connected with a rodless cavity of the push shovel oil cylinder. In the using process, the pressure sensor can be connected with a controller, the working state of the shovel oil cylinder can be controlled according to oil pressure, the oil pressure can also be monitored, and overpressure is prevented.
Furthermore, in order to simply realize the throttling speed regulation and the time delay of the turnover branch, two working oil ports of the first three-position four-way valve are respectively connected with a rod cavity and a rodless cavity of the turnover oil cylinder through a one-way throttle valve. In the use, the stability of upset hydro-cylinder work that can be better assurance reduces the shake phenomenon.
Furthermore, in order to realize the idling operation of the hydraulic system, the oil supply main path and the oil return main path are connected through a pipeline provided with a two-position two-way reversing valve. When the push shovel oil cylinder and the overturning oil cylinder do not act in the using process, the two-position two-way reversing valve is controlled to bypass the push shovel oil cylinder and the overturning oil cylinder, so that the oil pump and the motor can be prevented from being started and stopped frequently,
furthermore, in order to avoid the damage to the oil way, the oil pipe and the oil pump caused by the overlarge oil pressure in the oil supply main path, the oil supply main path is connected with the oil return main path through a pipeline provided with an overflow valve.
Furthermore, in order to prevent the hydraulic system from being affected by too high oil temperature, an air cooler is arranged on the oil return main path.
Further, in order to prevent the hydraulic oil from moving reversely and damaging the oil pump, a check valve is arranged on the oil supply main line.
Further, in order to reduce the types of valves and the complexity of an oil path, the first three-position four-way valve is an O-type three-position four-way valve. The locking of the turnover oil cylinder when the turnover oil cylinder is turned over to a median value can be realized through the middle position of the O-shaped three-position four-way valve, and the process from stopping to starting is relatively stable.
Further, the second three-position four-way valve is a Y-shaped three-position four-way valve. When the Y-shaped three-position four-way valve is in the middle position, the two working oil ports are communicated with the oil return port, the push shovel oil cylinder is in a floating state and can move along with external force, and the condition that the pressure of the push shovel oil cylinder is too high can be quickly relieved, so that a hydraulic system is protected.
Further, in order to facilitate control of the oil pump, the control is more precise, and the hydraulic system comprises a servo motor which is in driving connection with the oil pump.
Drawings
FIG. 1 is a connection diagram of a hydraulic system of a trash compression bin according to the present invention;
in the figure, 1 is a fuel tank; 2, an oil inlet filter; 3 is a servo motor; 4 is an oil pump; 5 is a one-way valve; 6 is an overflow valve; 7 is a first three-position four-way valve; 8 is a first one-way throttle valve; 9 is a turnover oil cylinder; 10 is a second one-way throttle valve; 11 is a push shovel oil cylinder; 12 is a pressure sensor; 13 is a second three-position four-way valve; 14 is a two-position two-way reversing valve; 15 is an oil return filter; and 16 is an air cooler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a hydraulic system of rubbish compression case, as shown in figure 1, including oil tank 1, servo motor 3, hydraulic pressure main road, push away shovel branch road and upset branch road and connect in parallel on the hydraulic pressure main road, the hydraulic pressure main road includes oil supply main road and oil return main road, is provided with oil pump 4 and check valve 5 on the oil supply main road, and this oil pump 4 is connected in the drive of servo motor 3, and oil tank 1 is connected to the oil return main road. Adopt servo motor drive oil pump in this embodiment for better, more accurate control motor and oil pump, as other implementation modes, the utility model discloses a hydraulic system also can adopt the motor of other forms.
The oil supply branch is connected with a turnover branch, a turnover oil cylinder 9 and a first three-position four-way valve 7 are arranged on the turnover branch, a first working oil port of the first three-position four-way valve 7 is connected with a rod cavity of the turnover oil cylinder 9 through a first one-way throttle valve 8, a second working oil port of the first three-position four-way valve 7 is connected with a rodless cavity of the turnover oil cylinder 9 through a second one-way throttle valve 10, an oil inlet of the first three-position four-way valve 7 is connected with an oil supply main path, and an oil return port of the first three-position four; wherein, the first three-position four-way valve 7 adopts an O-shaped three-position four-way valve. In this embodiment, the setting of the one-way throttle valve is for throttling speed regulation and time delay of the turnover branch, and as other embodiments, the speed regulation, time delay and the like of the turnover branch can also be realized by directly controlling the servo motor, so that the one-way throttle valve may not be provided.
The oil supply main path is connected with a push shovel branch path, a push shovel oil cylinder 11 and a second three-position four-way valve 13 are arranged on the push shovel branch path, a first working oil port of the second three-position four-way valve 13 is connected with a rodless cavity of the push shovel oil cylinder 11, a second working oil port of the second three-position four-way valve 13 is connected with a rod cavity of the push shovel oil cylinder 11, an oil inlet of the second three-position four-way valve 13 is connected with the oil supply main path, and an oil return port of the second three-position four-way valve 13 is connected with the oil return main path, wherein the second three. A pressure sensor 12 is arranged on a pipeline between a first working oil port of the second three-position four-way valve 13 and a rodless cavity of the shovel oil cylinder 11, and is used for monitoring the oil pressure in a shovel branch or controlling the rotating speed of a servo motor according to the detected oil pressure, and as other implementation modes, a pressure sensor can also be arranged on an oil supply main pipeline; of course, the hydraulic system may not be provided with a pressure sensor.
In this embodiment, the main oil supply path and the main oil return path are connected by a pipeline provided with a two-position two-way reversing valve 14, and the main oil supply path and the main oil return path are connected by a pipeline provided with an overflow valve 6, so as to realize the function of idling operation of the hydraulic system and the function of avoiding excessive oil pressure in the main oil supply path.
In the embodiment, an oil inlet filter 2 is arranged between an oil tank 1 and an oil inlet of an oil pump 4, and an oil return filter 15 is arranged on an oil return main path, so that the purity of a hydraulic system is ensured, and the reliability of the hydraulic system is improved; in addition, the oil return main path is also provided with an air cooler 16 for cooling the hydraulic oil working at high pressure to prevent the oil temperature from being too high; of course, as other embodiments, the oil intake filter, the oil return filter, and the air cooler may be replaced or removed as desired.
The following is a description of the process of the blade pushing operation and the turning operation:
the overturning oil cylinder drives the hopper to overturn, and comprises the steps of lifting the hopper, dropping the hopper and stopping the middle position of the hopper, and the DT1 of the two-position two-way valve 14 is electrified in the process, so that the main oil supply path and the main oil return path are not conducted. When the hopper is lifted, the DT3 of the first three-position four-way valve 7 is electrified, the servo motor 3 drives the hydraulic pump 4, hydraulic oil pumped by the hydraulic pump 4 passes through the one-way valve 5 and the right position of the first three-position four-way valve 7, then enters the rodless cavity of the turnover oil cylinder 9 through the one-way valve of the one-way throttle valve 10, and oil in the rod cavity of the turnover oil cylinder 9 flows back to the oil tank 1 through the throttle valve of the one-way throttle valve 8 and the right position of the first three-position four-way valve. When the hopper falls down, the DT2 of the first three-position four-way valve 7 is electrified, the servo motor 3 drives the oil pump 4, hydraulic oil pumped by the oil pump 4 passes through the one-way valve 5 and the left position of the first three-position four-way valve 7 and then enters the rod cavity of the turnover oil cylinder 9 through the one-way valve of the one-way throttle valve 8, and oil in the rodless cavity of the turnover oil cylinder 9 flows back to the oil tank 1 through the throttle valve of the one-way throttle valve 10 and the left position of the first three-position four-way valve 7. This first three-position cross valve 7 adopts the three-position cross valve of O type, when the hopper reachd the well position and stop, DT2 and DT3 of first three-position cross valve 7 all do not have the electricity, make its oil inlet, the oil return opening, the working oil port all seals, the upset hydro-cylinder can be fixed in well position motionless, even there is the exogenic action also can not make the upset hydro-cylinder rotate, from stopping to the process of start more steady, because be full of fluid in the upset hydro-cylinder, can play the cushioning effect, when hydraulic oil promoted the upset hydro-cylinder motion, make its speed can not be too fast because of the influence of oily resistance. The O-shaped three-position four-way valve can achieve a good hopper turning effect, and as other implementation modes, the first three-position four-way valve can also adopt other existing types of valves under the condition that the requirement on the turning effect is low.
The operation process of the push shovel generally comprises a fast forward process, a working process and a backspacing process, wherein the DT1 of the two-position two-way valve 14 is electrified in the process, so that the main oil supply path and the main oil return path are not conducted. When the blade is pushed out, the DT4 of the second three-position four-way valve 13 is electrified, the servo motor 3 drives the oil pump 4, hydraulic oil pumped by the oil pump 4 enters the rodless cavity of the blade oil cylinder 11 through the one-way valve 5 and the left position of the second three-position four-way valve 13, and oil in the rod cavity of the blade oil cylinder 11 flows back to the oil tank 1 through the left position of the second three-position four-way valve 13. When the blade returns, the DT5 of the second three-position four-way valve 13 is electrified, the servo motor 3 drives the oil pump 4, hydraulic oil pumped by the oil pump 4 enters the rod cavity of the blade oil cylinder 11 through the one-way valve 5 and the right position of the second three-position four-way valve 13, and oil in the rodless cavity of the blade oil cylinder 11 flows back to the oil tank 1 through the right position of the second three-position four-way valve 13. The second three-position four-way valve 13 adopts a Y-shaped three-position four-way valve, when the valve is in a middle position, an oil inlet is closed, two working oil ports are communicated with an oil return port, and the push shovel oil cylinder is in a floating state, can move along with the action of external force, can quickly relieve the condition that the pressure of the push shovel oil cylinder is overlarge, and is suitable for the characteristics of push shovel operation; of course, as other embodiments, other types of valves can be used as the second three-position four-way valve.
The pressure sensor 12 is used for detecting the pressure of the rodless cavity of the blade cylinder 11 directly, and pressure signals are converted into corresponding electric signals to control the rotating speed of the servo motor 3. When the pressure is lower than 15MPa, the rotating speed of the servo motor 3 is high, and the push shovel oil cylinder 11 extends out quickly to realize fast forwarding; when the compressed density of the garbage is increased to enable the pressure to be higher than 15MPa, the servo motor 3 automatically turns to a low rotating speed, the pushing speed of the push shovel oil cylinder 11 is reduced, and the work feeding is achieved.
The present invention has been described with reference to specific embodiments, but the present invention is not limited to the described embodiments. The utility model discloses a basic thinking lies in reducing the setting of other valves class and quantity through setting up the tribit cross valve, reduces the complexity of hydraulic pressure oil circuit, does not do the restrictive requirement to concrete control strategy, does not deviate from the utility model discloses a change, modification, replacement and the variation that go on the embodiment under the condition of principle and spirit still fall into the utility model discloses an in the protection range.
Claims (10)
1. A hydraulic system of a garbage compression box comprises a hydraulic main path, a push shovel branch path and a turnover branch path, wherein the push shovel branch path and the turnover branch path are connected in parallel on the hydraulic main path; the hydraulic main path comprises an oil supply main path and an oil return main path, an oil pump is arranged on the oil supply main path, and the oil return main path is used for connecting an oil tank; the hydraulic shovel is characterized in that a first three-position four-way valve is arranged on the overturning branch, two working oil ports of the first three-position four-way valve are respectively connected with a rod cavity and a rodless cavity of the overturning oil cylinder, an oil inlet of the first three-position four-way valve is connected with an oil supply main path, and an oil return port of the first three-position four-way valve is connected with an oil return main path; the two working oil ports of the second three-position four-way valve are respectively connected with a rod cavity and a rodless cavity of the push shovel oil cylinder, an oil inlet of the second three-position four-way valve is connected with an oil supply main path, and an oil return port of the second three-position four-way valve is connected with an oil return main path.
2. The hydraulic system of a garbage compression box according to claim 1, wherein a pressure sensor is arranged on a pipeline of a working oil port of the second three-position four-way valve connected with the rodless cavity of the push shovel oil cylinder.
3. The hydraulic system of a trash compression box of claim 1, wherein two working oil ports of the first three-position four-way valve are respectively connected with the rod chamber and the rodless chamber of the tilting cylinder through a one-way throttle valve.
4. A hydraulic system for a trash compression bin according to claim 1 wherein the main oil supply path is connected to the main oil return path by a line having a two-position, two-way directional valve.
5. A hydraulic system for a refuse compression box according to claim 1, characterized in that the main oil supply circuit is connected to the main oil return circuit by a line provided with an overflow valve.
6. The hydraulic system of a trash compression box of claim 1, wherein an air cooler is disposed on the return main path.
7. A hydraulic system for a trash compactor according to claim 1 wherein the main oil supply line is provided with a one-way valve.
8. A hydraulic system of a garbage compression box according to claim 1, 2 or 3, wherein the first three-position four-way valve is an O-type three-position four-way valve.
9. A hydraulic system of a garbage compression box according to claim 1, 2 or 3, wherein the second three-position four-way valve is a Y-type three-position four-way valve.
10. A hydraulic system for a refuse compression box according to claim 1, 2 or 3, characterized in that it comprises a servo motor drivingly connected to the oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997361.6U CN210686487U (en) | 2019-06-28 | 2019-06-28 | Hydraulic system of garbage compression box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997361.6U CN210686487U (en) | 2019-06-28 | 2019-06-28 | Hydraulic system of garbage compression box |
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| Publication Number | Publication Date |
|---|---|
| CN210686487U true CN210686487U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920997361.6U Expired - Fee Related CN210686487U (en) | 2019-06-28 | 2019-06-28 | Hydraulic system of garbage compression box |
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| CN (1) | CN210686487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810713A (en) * | 2022-03-16 | 2022-07-29 | 福龙马集团股份有限公司 | Hydraulic system of garbage transfer equipment, garbage transfer equipment and garbage hopper descending method |
-
2019
- 2019-06-28 CN CN201920997361.6U patent/CN210686487U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810713A (en) * | 2022-03-16 | 2022-07-29 | 福龙马集团股份有限公司 | Hydraulic system of garbage transfer equipment, garbage transfer equipment and garbage hopper descending method |
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Granted publication date: 20200605 |