CN210164706U - Hydraulic system and engineering mechanical equipment - Google Patents
Hydraulic system and engineering mechanical equipment Download PDFInfo
- Publication number
- CN210164706U CN210164706U CN201921016985.1U CN201921016985U CN210164706U CN 210164706 U CN210164706 U CN 210164706U CN 201921016985 U CN201921016985 U CN 201921016985U CN 210164706 U CN210164706 U CN 210164706U
- Authority
- CN
- China
- Prior art keywords
- motor
- valve
- port
- oil
- hydraulic system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000003921 oil Substances 0.000 claims abstract description 113
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 49
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 12
- 230000008859 change Effects 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides a hydraulic system and engineering machine tool equipment. Wherein, hydraulic system includes: a first motor and a second motor connected in series; the valve assembly is connected with the first motor and the second motor, and various hydraulic oil paths can be formed by changing the working state of the valve assembly; wherein the different hydraulic oil paths may operate one of the first motor and the second motor or operate the first motor and the second motor simultaneously. The utility model discloses a change the operating condition of valve module and can form multiple hydraulic pressure oil circuit, different hydraulic pressure oil circuit can make a motor operation in first motor and the second motor or make first motor and second motor operate simultaneously, so, both can satisfy the functional requirement of the synchronous operation operating mode of double motor, can satisfy the functional requirement of the operating condition of single motor again, promoted the performance and the market competition of product.
Description
Technical Field
The utility model relates to a hydraulic system technical field particularly, relates to a hydraulic system and engineering machine tool equipment.
Background
At present, two groups of single-motor hydraulic systems or one group of parallel double-motor hydraulic systems are mostly adopted in engineering machinery. However, the two groups of single-motor hydraulic systems have the defects of high equipment cost and large product volume; in the parallel double-motor hydraulic system, when the motors are subjected to different load forces during working, hydraulic oil is easy to flow through the low-load motor preferentially, so that the motors are asynchronous, and the product synchronism is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving at least one of the technical problem that exists among prior art or the correlation technique
To this end, a first aspect of the present invention provides a hydraulic system.
The second aspect of the utility model provides an engineering mechanical equipment.
In view of this, the first aspect of the present invention provides a hydraulic system, including: a first motor and a second motor connected in series; the valve assembly is connected with the first motor and the second motor, and various hydraulic oil paths can be formed by changing the working state of the valve assembly; wherein the different hydraulic oil paths may operate one of the first motor and the second motor or operate the first motor and the second motor simultaneously.
The utility model provides a pair of hydraulic system includes: a first motor, a second motor, and a valve assembly. The valve assembly has a plurality of working states, so that various hydraulic oil paths can be formed by changing the working states of the valve assembly. For example, one of the multiple hydraulic oil paths enables the first motor and the second motor to operate simultaneously, namely, the first motor and the second motor can meet the functional requirements of synchronous operation working conditions of the double motors, so that the overall dimension of the hydraulic system is favorably reduced under the condition of ensuring the synchronism, the step stability and the reliability of product operation, and the production cost of the product can be reduced.
For another example, another hydraulic circuit of the plurality of hydraulic circuits operates one of the first motor and the second motor, that is, the functional requirements of the operating condition of the single motor are satisfied.
This structural setting makes can change the operating condition of valve module according to the in-service use demand, and then forms different hydraulic pressure oil circuit to finally realize the purpose of double motor synchronous operation or single motor alone operation, so, promoted the performance and the market competition of product.
According to the utility model discloses foretell hydraulic system can also have following additional technical characterstic:
in the above technical solution, preferably, the valve assembly includes: a first valve body provided with a first port and a second port; a second valve body provided with a third port and a fourth port; the four-way reversing valve is provided with a first output port and a second output port; the first port, the first oil port of the first motor and the first output port are connected; the second port, the third port, the second oil port of the first motor and the third oil port of the second motor are connected; the fourth port, a fourth oil port of the second motor and the second output port are connected.
In this solution, the valve assembly comprises: the valve comprises a first valve body, a second valve body and a four-way reversing valve. Through the reasonable connection structure that sets up first valve body, second valve body and four-way reversing valve for first port, the first hydraulic fluid port and the first delivery outlet of first motor are connected, and make the second hydraulic fluid port of second port, third port, first motor and the third hydraulic fluid port of second motor be connected, and make the fourth hydraulic fluid port of fourth port, second motor and second delivery outlet be connected. The hydraulic oil flows into the first valve body and the second valve body from the first output port or the second output port, namely, the hydraulic oil firstly flows into the four-way reversing valve of the valve component and then flows into the subsequent first valve body and the subsequent second valve body from the first output port or the second output port.
When the first motor and the second motor synchronously run, one side of the four-way reversing valve is electrified, the first valve body and the second valve body are disconnected due to electrification, and hydraulic oil cannot flow through the first valve body and the second valve body, so that the hydraulic oil flows back to an oil tank of the hydraulic system through the second output port and the oil return port of the four-way reversing valve after sequentially flowing through the first output port, the first motor and the second motor of the four-way reversing valve.
And when the first motor and the second motor synchronously run, the other side of the four-way reversing valve is electrified, the first valve body and the second valve body are disconnected due to electrification, and hydraulic oil cannot flow through the first valve body and the second valve body, so that the hydraulic oil flows through the second output port of the four-way reversing valve, the second motor and the first motor in sequence, and then flows back to an oil tank of the hydraulic system through the first output port and the oil return port of the four-way reversing valve.
Namely, the structure arrangement realizes synchronous operation and bidirectional operation of the first motor and the second motor, so that the use performance and the use universality of the product are further improved, and the diversified use requirements of users can be met.
When the first motor operates alone, one side of the four-way reversing valve is electrified, the first valve body is disconnected due to electrification, and hydraulic oil cannot flow through the first valve body, so that the hydraulic oil flows through the first output port of the four-way reversing valve, the first motor and the second valve body in sequence and then flows back to an oil tank of the hydraulic system through the second output port and an oil return port of the four-way reversing valve.
And when the second motor operates independently, one side of the four-way reversing valve is electrified, the second valve body is disconnected due to the electrification, and the hydraulic oil cannot flow through the second valve body, so that the hydraulic oil flows through the second output port of the four-way reversing valve, the second motor and the first valve body in sequence and then flows back to an oil tank of the hydraulic system through the first output port and the oil return port of the four-way reversing valve.
Namely, the structure arrangement realizes the operation of a single motor and the bidirectional operation, thereby further improving the service performance and the use universality of the product and meeting the diversified use requirements of users.
In any of the above technical solutions, preferably, the valve assembly further includes: the two ends of the first adjustable valve group are respectively connected with the first oil port and the second oil port, and the first adjustable valve group comprises a third valve body and a first speed regulating valve which are connected in series; and the two ends of the second adjustable valve group are respectively connected with the third oil port and the fourth oil port, and the second adjustable valve group comprises a fourth valve body and a second speed regulating valve which are connected in series.
In this solution, the valve assembly further comprises a first adjustable valve block and a second adjustable valve block. The two ends of the first adjustable valve group are connected with the first oil port and the second oil port respectively, the first adjustable valve group comprises a third valve body and a first speed regulating valve which are connected in series, the two ends of the second adjustable valve group are connected with the third oil port and a fourth oil port respectively, and the second adjustable valve group comprises a fourth valve body and a second speed regulating valve which are connected in series.
When the first motor operates alone, one side of the four-way reversing valve is electrified, the first valve body is disconnected due to the electrification, and hydraulic oil cannot flow through the first valve body, so that the hydraulic oil flows through the first output port of the four-way reversing valve, the first motor, the first adjustable valve group and the second valve body and then flows back to an oil tank of the hydraulic system through the second output port and an oil return port of the three-position four-way reversing valve. The independent speed-adjustable operation of the first motor is realized by adjusting the first speed-adjusting valve.
And when the second motor operates independently, one side of the four-way reversing valve is electrified, the second valve body is disconnected due to the electrification, and the hydraulic oil cannot flow through the second valve body, so that the hydraulic oil flows through the second output port of the four-way reversing valve, the second motor, the second adjustable valve group and the first valve body and then flows back to an oil tank of the hydraulic system through the first output port of the four-way reversing valve. The second speed regulating valve is regulated to realize the independent speed-adjustable operation of the second motor.
The structure realizes independent speed-adjustable operation of the motor, further improves the use performance and the use universality of products, and can meet the diversified use requirements of users.
Furthermore, by reasonably arranging the structure of the hydraulic system, the double-motor synchronous operation, the single-motor speed-adjustable operation and the free conversion between the two-way operation of the motor can be carried out according to the actual use requirement.
In any of the above technical solutions, preferably, the hydraulic system further includes: the controller is connected with the four-way reversing valve, the first valve body, the second valve body, the first adjustable valve group and the second adjustable valve group; the controller is used for controlling the four-way reversing valve, the first valve body, the second valve body, the first adjustable valve group and the second adjustable valve group to be opened and closed.
In the technical scheme, the controller is arranged, so that the controller is connected with the four-way reversing valve, the first valve body, the second valve body, the first adjustable valve group and the second adjustable valve group, and the four-way reversing valve, the first valve body, the second valve body, the first adjustable valve group and the second adjustable valve group can be controlled to be opened and closed through the controller, so that the hydraulic system has the functions of synchronous operation of double motors, independent speed-adjustable operation of the motors and bidirectional operation of the motors. The structure improves the automation degree of the control of the hydraulic system, reduces the investment of manpower, and can realize the operation of fine products and high efficiency.
Of course, the operation states of each valve body of the valve assembly and the adjustable valve group can also be controlled manually.
In any of the above technical solutions, preferably, the hydraulic system further includes: an oil tank; and a pump connected to the valve assembly and the oil tank through a pipe, the pump pumping oil from the oil tank into at least one of the first motor and the second motor through the valve assembly to operate one of the first motor and the second motor or to operate the first motor and the second motor simultaneously.
In this technical solution, the hydraulic system further includes: a tank and a pump. The pump is connected with the valve component and the oil tank through pipelines, so that the oil in the oil tank can be pumped into at least one of the first motor and the second motor through the valve component by the pump to provide pumping hydraulic oil for the first motor and the second motor. Meanwhile, the structure arrangement realizes a single-pump source series connection type double-motor hydraulic system, namely, the purpose of driving at least one of the first motor and the second motor to operate is realized by using one pump, so that the device investment is reduced and the production cost is reduced under the condition of ensuring the service performance of a product.
In any of the above technical solutions, preferably, the hydraulic system further includes: and the one-way valve is arranged on a pipeline connecting the pump and the valve component and is communicated from the pump to the valve component.
In the technical scheme, the one-way valve is arranged on the pipeline connecting the pump and the valve assembly, and the one-way valve is communicated from the pump to the valve assembly, so that the situation that hydraulic oil flows back to the pump can be prevented under the condition that the hydraulic oil smoothly flows to the valve assembly from the pump, and the running stability and reliability of the hydraulic system can be ensured.
In any of the above technical solutions, preferably, the hydraulic system further includes: and the filter is arranged on a pipeline connecting the pump and the valve assembly, and is positioned between the one-way valve and the pump.
In the technical scheme, the filter is arranged on the pipeline connecting the pump and the valve assembly, so that the filter is positioned between the one-way valve and the pump, and the filter can filter out impurities in oil flowing out of the oil tank, so as to ensure the cleanliness of the oil subsequently flowing into the valve assembly, the first motor and the second motor, reduce the probability of blocking the valve assembly and the two motors by the impurities, further prolong the service life of the hydraulic system, and reduce the frequency of product maintenance and repair, so that the use cost of products can be reduced.
In any of the above technical solutions, preferably, the hydraulic system further includes: and two ends of the overflow valve are respectively connected with the pump and the oil tank, and the overflow valve is used for adjusting the outlet pressure of the pump.
In this technical scheme, through setting up the overflow valve for the both ends of overflow valve are connected pump and oil tank respectively, and the overflow valve can play the constant pressure overflow, and the steady voltage, system off-load and safety protection effect, so, utilize the outlet pressure of the adjustable pump of overflow valve, and then let the output pressure of pump and load suit.
In any of the above technical solutions, preferably, the hydraulic system further includes: an electric motor; the two ends of the coupler are respectively connected with the motor and the pump; wherein, the motor drives the pump to work through the shaft coupling.
In this technical solution, in this embodiment, by providing the coupler, two ends of the coupler are respectively connected to the electric motor and the pump, that is, the main shaft of the electric motor drives the pump to rotate through the coupler, that is, the electric motor and the coupler provide a driving force for driving the pump to rotate, so as to provide an effective and feasible power support for ensuring normal rotation of the first motor and the second motor.
Wherein, the motor can also be an engine.
The second aspect of the utility model provides an engineering mechanical equipment, include: the hydraulic system according to any one of the preceding claims.
The utility model provides an engineering machinery equipment, because of include as in any one of the first aspect hydraulic system, consequently have above-mentioned hydraulic system's whole beneficial effect, do not state one by one here.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural diagram of a hydraulic system according to an embodiment of the present invention.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
1 hydraulic system, 10 first motor, 20 second motor, 302 first valve body, 304 first port, 306 second port, 308 second valve body, 310 third port, 312 fourth port, 314 four-way reversing valve, 316 first adjustable valve group, 318 third valve body, 320 first speed regulating valve, 322 second adjustable valve group, 324 fourth valve body, 326 second speed regulating valve, 328 first oil port, 330 second oil port, 332 third oil port, 334 fourth oil port, 40 oil tank, 50 pump, 60 check valve, 70 filter, 80 overflow valve, 90 motor, 100 coupler.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The hydraulic system 1 and the work machine according to some embodiments of the present invention are described below with reference to fig. 1.
As shown in fig. 1, an embodiment of the present invention provides a hydraulic system 1, including: a first motor 10 and a second motor 20 connected in series; the valve assembly is connected with the first motor 10 and the second motor 20, and various hydraulic oil paths can be formed by changing the working state of the valve assembly; wherein different hydraulic oil paths may operate one of the first motor 10 and the second motor 20 or operate the first motor 10 and the second motor 20 simultaneously.
The utility model provides a pair of hydraulic system 1 includes: a first motor 10, a second motor 20 and a valve assembly. The valve assembly has a plurality of working states, so that various hydraulic oil paths can be formed by changing the working states of the valve assembly. For example, one of the multiple hydraulic oil paths enables the first motor 10 and the second motor 20 to operate simultaneously, that is, the first motor 10 and the second motor 20 can meet the functional requirements of the synchronous operation working conditions of the two motors, so that the overall dimension of the hydraulic system 1 can be reduced under the condition of ensuring the synchronism, the stability and the reliability of the product operation, and the production cost of the product can be reduced.
For another example, another hydraulic circuit of the plurality of hydraulic circuits operates one of the first motor 10 and the second motor 20, that is, the functional requirements of the operation condition of the single motor are satisfied.
This structural setting makes can change the operating condition of valve module according to the in-service use demand, and then forms different hydraulic pressure oil circuit to finally realize the purpose of double motor synchronous operation or single motor alone operation, so, promoted the performance and the market competition of product.
In an embodiment of the present invention, preferably, as shown in fig. 1, the valve assembly includes: a first valve body 302 provided with a first port 304 and a second port 306; a second valve body 308 provided with a third port 310 and a fourth port 312; a four-way reversing valve 314 provided with a first output port and a second output port; wherein, the first port 304, the first oil port 328 of the first motor 10 and the first output port are connected; the second port 306, the third port 310, the second port 330 of the first motor 10 and the third port 332 of the second motor 20 are connected; the fourth port 312, the fourth port 334 of the second motor 20 and the second output port are connected.
In a specific embodiment, the first valve body 302 is a first electrically controlled ball valve, the second valve body 308 is a second electrically controlled ball valve, and the four-way selector valve 314 is a three-position four-way selector valve. As shown in fig. 1, P represents an oil inlet of the three-position four-way reversing valve, T represents an oil return port of the three-position four-way reversing valve, a represents a first output port of the three-position four-way reversing valve, B represents a second output port of the three-position four-way reversing valve, the oil inlet of the three-position four-way reversing valve is connected with one end of the check valve 60 and one end of the overflow valve 80, and the oil return port of the three-position four-way reversing valve is connected with the oil tank 40.
Through reasonable arrangement of the connection structures of the first electric control ball valve, the second electric control ball valve and the three-position four-way reversing valve, the first port 304, the first oil port 328 of the first motor 10 and the first output port are connected, the second port 306, the third port 310, the second oil port 330 of the first motor 10 and the third oil port 332 of the second motor 20 are connected, and the fourth port 312, the fourth oil port 334 of the second motor 20 and the second output port are connected. The hydraulic oil flows into the first electric control ball valve and the second electric control ball valve from the first output port or the second output port, that is, the hydraulic oil firstly flows into the oil inlet of the three-position four-way reversing valve of the valve assembly, then flows into the subsequent first electric control ball valve and the subsequent second electric control ball valve from the first output port or the second output port, and then flows back to the oil tank 40 through the oil return port.
When the first motor 10 and the second motor 20 operate synchronously, the right side of the three-position four-way reversing valve is electrified, the first electric control ball valve and the second electric control ball valve are disconnected due to the electrification, and hydraulic oil cannot flow through the first electric control ball valve and the second electric control ball valve, so that the hydraulic oil enters from ｃA port P of the three-position four-way reversing valve, reaches the first motor 10 and the second motor 20 through ｃA P-A oil path, and then flows back to the oil tank 40 of the hydraulic system 1 through ｃA B-T oil path of the three-position four-way reversing valve.
Alternatively, when the first motor 10 and the second motor 20 operate synchronously, the left side of the three-position four-way reversing valve is energized, the first electric control ball valve and the second electric control ball valve are disconnected due to energization, and hydraulic oil cannot flow through the first electric control ball valve and the second electric control ball valve, so that hydraulic oil enters from the port P of the three-position four-way reversing valve, reaches the second motor 20 and the first motor 10 through the P-B oil path, and then flows back to the oil tank 40 of the hydraulic system 1 through the a-T oil path of the three-position four-way reversing valve.
Namely, the structure arrangement realizes the synchronous operation and the bidirectional operation of the first motor 10 and the second motor 20, thereby further improving the use performance and the use universality of the product and meeting the diversified use requirements of users.
When the first motor 10 operates alone, one side of the three-position four-way reversing valve is powered on, the first electric control ball valve is disconnected due to the power on, and hydraulic oil cannot flow through the first electric control ball valve, so that the hydraulic oil flows through the first output port of the three-position four-way reversing valve, the first motor 10 and the second electric control ball valve in sequence and then flows back to the oil tank 40 of the hydraulic system 1 through the second output port and the oil return port of the three-position four-way reversing valve.
Alternatively, when the second motor 20 operates alone, one side of the three-position four-way reversing valve is energized, the second electric control ball valve is disconnected due to energization, and hydraulic oil cannot flow through the second electric control ball valve, so that the hydraulic oil flows through the second output port of the three-position four-way reversing valve, the second motor 20 and the first electric control ball valve in sequence, and then flows back to the oil tank 40 of the hydraulic system 1 through the first output port and the oil return port of the three-position four-way reversing valve.
Namely, the structure arrangement realizes the operation of a single motor and the bidirectional operation, thereby further improving the service performance and the use universality of the product and meeting the diversified use requirements of users.
In an embodiment of the present invention, preferably, as shown in fig. 1, the valve assembly further includes: the two ends of the first adjustable valve group 316 are respectively connected with the first oil port 328 and the second oil port 330, and the first adjustable valve group 316 comprises a third valve body 318 and a first speed regulating valve 320 which are connected in series; and two ends of the second adjustable valve set 322 are respectively connected with the third oil port 332 and the fourth oil port 334, and the second adjustable valve set 322 comprises a fourth valve body 324 and a second speed regulating valve 326 which are connected in series.
In this embodiment, the valve assembly further includes a first adjustable valve block 316 and a second adjustable valve block 322. The two ends of the first adjustable valve set 316 are respectively connected to the first oil port 328 and the second oil port 330, the first adjustable valve set 316 includes a third valve body 318 and a first speed regulating valve 320 which are connected in series, the two ends of the second adjustable valve set 322 are respectively connected to a third oil port 332 and a fourth oil port 334, and the second adjustable valve set 322 includes a fourth valve body 324 and a second speed regulating valve 326 which are connected in series.
When the first motor 10 operates alone, one side of the four-way reversing valve 314 is powered on, the first valve body 302 is disconnected due to the power on, and hydraulic oil cannot flow through the first valve body 302, so that the hydraulic oil flows through the first output port of the four-way reversing valve 314, the first motor 10, the first adjustable valve group 316 and the second valve body 308, and then flows back to the oil tank 40 of the hydraulic system 1 through the second output port and the oil return port of the four-way reversing valve 314. By adjusting the first speed valve 320, an individually adjustable speed operation of the first motor 10 is achieved.
Alternatively, when the second motor 20 operates alone, one side of the four-way reversing valve 314 is powered on, the second valve body 308 is disconnected due to the power on, and hydraulic oil cannot flow through the second valve body 308, so that the hydraulic oil flows through the second output port of the four-way reversing valve 314, the second motor 20, the second adjustable valve set 322, and the first valve body 302, and then flows back to the oil tank 40 of the hydraulic system 1 through the first output port and the oil return port of the four-way reversing valve 314. By adjusting the second speed valve 326, an individually adjustable speed operation of the second motor 20 is achieved.
The structure realizes independent speed-adjustable operation of the motor, further improves the use performance and the use universality of products, and can meet the diversified use requirements of users.
Furthermore, by reasonably arranging the structure of the hydraulic system 1, the double-motor synchronous operation, the single-motor speed-adjustable operation and the free conversion between the two-way operation of the motor can be carried out according to the actual use requirement.
In an exemplary embodiment, the third valve body 318 is a third electric ball valve, the fourth valve body 324 is a fourth electric ball valve, the first speed regulating valve 320 is a first electric proportional speed regulating valve, and the second speed regulating valve 326 is a second electric proportional speed regulating valve.
In an embodiment of the present invention, preferably, the hydraulic system 1 further includes: the controller is connected with the four-way reversing valve 314, the first valve body 302, the second valve body 308, the first adjustable valve group 316 and the second adjustable valve group 322; the controller is used for controlling the four-way reversing valve 314, the first valve body 302, the second valve body 308, the first adjustable valve group 316 and the second adjustable valve group 322 to open and close.
In this embodiment, the controller is connected to the four-way reversing valve 314, the first valve body 302, the second valve body 308, the first adjustable valve group 316 and the second adjustable valve group 322, so that the four-way reversing valve 314, the first valve body 302, the second valve body 308, the first adjustable valve group 316 and the second adjustable valve group 322 can be controlled to open and close by the controller, and the hydraulic system 1 can simultaneously have the functions of synchronous operation of two motors, independent speed-adjustable operation of the motors and bidirectional operation of the motors. This structure setting has promoted the degree of automation of hydraulic system 1 control, has reduced the input of manpower, can realize the meticulous and efficient operation of product.
Of course, the operation states of each valve body of the valve assembly and the adjustable valve group can also be controlled manually.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic system 1 further includes: a fuel tank 40; and a pump 50, the pump 50 being connected to the valve assembly and the oil tank 40 through a pipe, the pump 50 pumping the oil in the oil tank 40 into at least one of the first motor 10 and the second motor 20 through the valve assembly to operate one of the first motor 10 and the second motor 20 or to operate both the first motor 10 and the second motor 20 simultaneously.
In this embodiment, the hydraulic system 1 further includes: a tank 40 and a pump 50. Wherein the pump 50 is connected to the valve assembly and the oil tank 40 through a pipe, so that the oil in the oil tank 40 can be pumped by the pump 50 through the valve assembly into at least one of the first motor 10 and the second motor 20 to supply the first motor 10 and the second motor 20 with the hydraulic oil pumped by the pump 50. Meanwhile, the structural arrangement realizes a single-pump source series connection type double-motor hydraulic system, namely, the purpose of driving at least one of the first motor 10 and the second motor 20 to operate is realized by using one pump 50, so that the device investment is reduced and the production cost is reduced under the condition of ensuring the service performance of a product.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic system 1 further includes: and a check valve 60 provided in a line connecting the pump 50 and the valve assembly, the check valve 60 being communicated from the pump 50 to the valve assembly.
In this embodiment, by providing the check valve 60 on the pipe connecting the pump 50 and the valve assembly and communicating the check valve 60 from the pump 50 to the valve assembly, the hydraulic oil can be prevented from flowing backward to the pump 50 while ensuring that the hydraulic oil smoothly flows from the pump 50 to the valve assembly, and therefore, the stability and reliability of the operation of the hydraulic system 1 can be ensured.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic system 1 further includes: and a filter 70 provided on a pipe connecting the pump 50 and the valve assembly, the filter 70 being positioned between the check valve 60 and the pump 50.
In this embodiment, the filter 70 is disposed on the pipeline connecting the pump 50 and the valve assembly, so that the filter 70 is located between the check valve 60 and the pump 50, and thus, the filter 70 can filter out impurities in the oil flowing out from the oil tank 40, so as to ensure the cleanliness of the oil subsequently flowing into the valve assembly and the first and second motors 10 and 20, reduce the probability of the impurities blocking the valve assembly and the two motors, and further prolong the service life of the hydraulic system 1, and reduce the use cost of the product due to the reduction of the frequency of product maintenance and repair.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic system 1 further includes: the two ends of the overflow valve 80 are respectively connected with the pump 50 and the oil tank 40, and the overflow valve 80 is used for adjusting the outlet pressure of the pump 50.
In this embodiment, the overflow valve 80 is provided, so that two ends of the overflow valve 80 are respectively connected to the pump 50 and the oil tank 40, and the overflow valve 80 can perform functions of constant pressure overflow, pressure stabilization, system unloading and safety protection, so that the outlet pressure of the pump 50 can be adjusted by using the overflow valve 80, and the output pressure of the pump 50 is adapted to the load. Specifically, relief valve 80 is an electrically proportional relief valve.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic system 1 further includes: a motor 90; a coupling 100, both ends of the coupling 100 are respectively connected with the motor 90 and the pump 50; wherein, the motor 90 drives the pump 50 to work through the coupling 100.
In this embodiment, the coupling 100 is arranged such that both ends of the coupling 100 are respectively connected to the motor 90 and the pump 50, that is, the main shaft of the motor 90 drives the pump 50 to rotate through the coupling 100, that is, the motor 90 and the coupling 100 provide a driving force for driving the pump 50 to rotate, so as to provide an effective and feasible power support for ensuring the normal rotation of the first motor 10 and the second motor 20.
The motor 90 may be replaced by an engine, and of course, the motor 90 may be replaced by another power device, which is not limited to this example.
According to the utility model discloses a second aspect embodiment still provides an engineering machine tool equipment, include the utility model discloses a first aspect embodiment hydraulic system 1.
The utility model provides an engineering mechanical equipment, because of including the first aspect embodiment hydraulic system 1, consequently have above-mentioned hydraulic system 1's whole beneficial effect, do not state one by one here.
In the specific embodiment, by reasonably setting the structure of the hydraulic system 1, the single-pump-source series connection type double-motor hydraulic system is realized, and the synchronous operation function of double motors and the independent speed-adjustable function of the double motors can be realized under a single pump source; and the motor bidirectional operation function can be realized by adjusting the four-way reversing valve 314.
In the specific embodiment, a single pump source control mode is adopted, the first motor 10 and the second motor 20 are used in series, the equipment cost and the occupancy rate of space are reduced, the double motors can simultaneously act by controlling the first electric control ball valve, the second electric control ball valve, the third electric control ball valve and the fourth electric control ball valve, the synchronism during simultaneous action is ensured, the motors can independently act by controlling the first electric control ball valve, the second electric control ball valve, the third electric control ball valve and the fourth electric control ball valve, in order to meet the speed-adjustable working condition during independent action of the motors, the electric proportional speed-adjusting valves are respectively added in oil paths where the third electric control ball valve and the fourth electric control ball valve are located, and when the rotating speed of a single motor needs to be increased or decreased, the flow of the first electric proportional speed-adjusting valve or the second electric proportional speed-adjusting valve in the corresponding parallel oil paths is controlled to be decreased or increased, and the corresponding function. The bidirectional operation of the motor can be realized by adjusting the three-position four-way reversing valve.
In the specific embodiment, the electric motor 90 is used for providing power for an oil source required by the double-motor system; the coupling 100 functions to transmit the power of the motor 90 to the pump 50; the pump 50 is used for supplying hydraulic oil to the double-motor system; the filter 70 is used for filtering oil of the pump 50 and protecting hydraulic elements such as valve components and the like; the check valve 60 functions to prevent oil from flowing backward into the pump 50; the electric proportional overflow valve is used for continuously adjusting the outlet pressure of the pump 50 and adapting the output pressure of the pump 50 to the load; the three-position four-way reversing valve is used for controlling a motor hydraulic oil loop; the first motor 10 functions as an actuator of the hydraulic system 1; the second motor 20 functions as an actuator of the hydraulic system 1; the third electric control ball valve and the fourth electric control ball valve are used for controlling the on-off of the oil path; the first electric proportional speed regulating valve is used for regulating the flow of an oil circuit where the first electric proportional speed regulating valve is located and changing the rotation speed of the first motor 10; the second electric proportional speed regulating valve is used for controlling the on-off of the oil circuit where the second electric proportional speed regulating valve is located and changing the rotation speed of the second motor 20; the first electric control ball valve is used for controlling the on-off of an oil path where the first electric control ball valve is located, so that the static or running state of the first motor 10 is realized; the second electric control ball valve is used for controlling the on-off of the oil path where the second electric control ball valve is located, and the static or running state of the second motor 20 is realized.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hydraulic system, comprising:
a first motor and a second motor connected in series;
the valve assembly is connected with the first motor and the second motor, and a plurality of hydraulic oil paths can be formed by changing the working state of the valve assembly;
wherein different hydraulic oil passages may operate one of the first motor and the second motor or operate the first motor and the second motor simultaneously.
2. The hydraulic system of claim 1,
the valve assembly includes:
a first valve body provided with a first port and a second port;
a second valve body provided with a third port and a fourth port;
the four-way reversing valve is provided with a first output port and a second output port;
the first port, the first oil port of the first motor and the first output port are connected; the second port, the third port, the second oil port of the first motor and the third oil port of the second motor are connected; the fourth port, the fourth oil port of the second motor and the second output port are connected.
3. The hydraulic system of claim 2,
the valve assembly further comprises:
the two ends of the first adjustable valve group are respectively connected with the first oil port and the second oil port, and the first adjustable valve group comprises a third valve body and a first speed regulating valve which are connected in series;
and the two ends of the second adjustable valve group are respectively connected with the third oil port and the fourth oil port, and the second adjustable valve group comprises a fourth valve body and a second speed regulating valve which are connected in series.
4. The hydraulic system of claim 3, further comprising:
the controller is connected with the four-way reversing valve, the first valve body, the second valve body, the first adjustable valve group and the second adjustable valve group;
the controller is used for controlling the four-way reversing valve, the first valve body, the second valve body, the first adjustable valve group and the second adjustable valve group to be opened and closed.
5. The hydraulic system of any one of claims 1-4, further comprising:
an oil tank;
a pump connected to the valve assembly and the oil tank through a pipe, the pump pumping oil in the oil tank into at least one of the first motor and the second motor through the valve assembly to operate one of the first motor and the second motor or to operate the first motor and the second motor simultaneously.
6. The hydraulic system of claim 5, further comprising:
and the one-way valve is arranged on a pipeline connecting the pump and the valve component, and the one-way valve is communicated from the pump to the valve component.
7. The hydraulic system of claim 6, further comprising:
a filter disposed on a line connecting the pump and the valve assembly, the filter being located between the one-way valve and the pump.
8. The hydraulic system of claim 5, further comprising:
and two ends of the overflow valve are respectively connected with the pump and the oil tank, and the overflow valve is used for adjusting the outlet pressure of the pump.
9. The hydraulic system of claim 5, further comprising:
an electric motor;
the two ends of the coupler are respectively connected with the motor and the pump;
wherein, the motor drives the pump to work through the coupling.
10. A construction machine, comprising:
a hydraulic system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921016985.1U CN210164706U (en) | 2019-07-02 | 2019-07-02 | Hydraulic system and engineering mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921016985.1U CN210164706U (en) | 2019-07-02 | 2019-07-02 | Hydraulic system and engineering mechanical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210164706U true CN210164706U (en) | 2020-03-20 |
Family
ID=69795068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921016985.1U Withdrawn - After Issue CN210164706U (en) | 2019-07-02 | 2019-07-02 | Hydraulic system and engineering mechanical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210164706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230611A (en) * | 2019-07-02 | 2019-09-13 | 中国铁建重工集团股份有限公司 | Hydraulic system and engineering mechanical device |
-
2019
- 2019-07-02 CN CN201921016985.1U patent/CN210164706U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230611A (en) * | 2019-07-02 | 2019-09-13 | 中国铁建重工集团股份有限公司 | Hydraulic system and engineering mechanical device |
| CN110230611B (en) * | 2019-07-02 | 2024-03-08 | 中国铁建重工集团股份有限公司 | Hydraulic system and engineering machinery equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107387598B (en) | Efficient oil source system of automatic transmission | |
| CN109139895A (en) | A kind of double pump fuel feeding and lubricating and cooling system | |
| CN105952713B (en) | A kind of hydraulic cylinder pilot system and method for testing | |
| CN213088564U (en) | Hydraulic system of hybrid transmission | |
| CN104163385A (en) | Hydraulic control system for winch | |
| CN210164706U (en) | Hydraulic system and engineering mechanical equipment | |
| CN102734241B (en) | Opened and closed hydraulic system and engineering machinery | |
| CN103452961B (en) | Open central control unit with constant and regulating pump | |
| CN110230611B (en) | Hydraulic system and engineering machinery equipment | |
| CN109114053B (en) | Multi-winch hydraulic system | |
| CN107761804B (en) | Multi-pressure-level hydraulic excavator power source system | |
| CN201616616U (en) | Full-hydraulic electric tension machine hydraulic system | |
| CN107725504B (en) | Hydraulic system capable of providing proper performance for load and hydraulic control method | |
| CN213392919U (en) | Double-loop hydraulic system with rear confluence of main throttling port | |
| CN214533782U (en) | Hybrid power hydraulic system and overhead working truck | |
| CN213479137U (en) | Hydraulic oil supply system and vehicle with same | |
| CN108483264B (en) | The hydraulic control system and hoisting machinery of hoisting machinery | |
| SE1251088A1 (en) | Hydraulic plant for an industrial truck | |
| CN204300682U (en) | For the pipeline control system of hydraulic piston type compressor | |
| CN113153854A (en) | Hybrid power hydraulic system and overhead working truck | |
| CN108516467B (en) | The hydraulic control system and hoisting machinery of hoisting machinery | |
| CN110529584B (en) | Power system cooling device | |
| CN114151055B (en) | Fracturing equipment hydraulic system, control method and fracturing equipment | |
| CN217502118U (en) | Device for maintaining outlet pressure of electric control heavy-load open pump | |
| CN104763695A (en) | Hydraulic system, radiator system and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200320 Effective date of abandoning: 20240308 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200320 Effective date of abandoning: 20240308 |