CN210608969U - Double-motor control system - Google Patents
Double-motor control system Download PDFInfo
- Publication number
- CN210608969U CN210608969U CN201921987125.2U CN201921987125U CN210608969U CN 210608969 U CN210608969 U CN 210608969U CN 201921987125 U CN201921987125 U CN 201921987125U CN 210608969 U CN210608969 U CN 210608969U
- Authority
- CN
- China
- Prior art keywords
- control
- valve
- switch valve
- control switch
- communicated
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a double motor control system, include: a first hydraulic motor and a second hydraulic motor; the first control switch valve, the second control switch valve and the third control switch valve are connected between the first hydraulic motor and the second hydraulic motor; the control device can control the first control switch valve and the third control switch valve to be opened when being positioned at a first control position, control the second control switch valve to be closed so as to enable the first hydraulic motor and the second hydraulic motor to be connected in parallel, and control the first control switch valve and the third control switch valve to be closed and control the second control switch valve to be opened so as to enable the first hydraulic motor and the second hydraulic motor to be connected in series when being positioned at a second control position. The three control switch valves and the control device are arranged, so that the opening and closing of each control switch valve are adjusted through the control device, the parallel connection and series connection switching is realized, and the operation is simple, convenient and fast.
Description
Technical Field
The utility model relates to a hydraulic control technical field, more specifically say, relate to a double motor control system.
Background
The power head of the rock drilling machine is more in output mode of using double motors and used for the rotary main operation of the rock drilling machine, the rotary speed and torque parameters are important indexes of the rock drilling machine, most of the rotary power heads of the double motors do not use the function of controlling the motors to be connected in series and in parallel at present, and a small part of the rotary power heads with the function are used by a common three-position four-way control device.
For the rock drilling machine which does not use the double-motor serial-parallel switching control, when the rock drilling machine is connected in parallel, a larger rotating torque can be provided, but the rotating speed is lower; when connected in series, a greater rotational speed can be provided, but the rotational torque can be lower; when general equipment works, according to different geological conditions, higher working efficiency and longer service life can be obtained by using different rotating speeds and torque matching, so that the use performance of the equipment can be better improved by using a control mode capable of switching between parallel connection and series connection in the equipment. The existing switching mode by using a common three-position four-way control device easily causes impact on a hydraulic circuit and a motor due to the opening and closing of a valve core in the switching process, is obvious in blockage and easily breaks down in the using process
In summary, how to effectively solve the problem of inconvenience in switching the two motors in series and parallel is a problem that needs to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a dual-motor control system, which can effectively solve the problem of inconvenient serial and parallel switching of the dual motors.
In order to achieve the above object, the utility model provides a following technical scheme:
a dual motor control system comprising:
the positive rotation inlet of the first hydraulic motor is communicated with the first interface;
the positive rotation outlet of the second hydraulic motor is communicated with the second interface;
the first end of the first control switch valve is communicated with the first interface, and the second end of the first control switch valve is communicated with the forward rotation inlet of the second hydraulic motor;
a first end of the first control switch valve is communicated with a forward rotation inlet of the first hydraulic motor, and a second end of the first control switch valve is communicated with a forward rotation outlet of the second hydraulic motor;
a third control switch valve, the first end of which is communicated with the second interface and the second end of which is communicated with the positive rotation outlet of the first hydraulic motor;
and the control device can control the first control switch valve and the third control switch valve to be opened and control the second control switch valve to be closed when being positioned at a first control position, and can control the first control switch valve and the third control switch valve to be closed and control the second control switch valve to be opened when being positioned at a second control position.
In the double-motor control system, when two motors are required to be connected in parallel, the control device is only required to be operated so as to be positioned at the first control position, the parallel connection is realized through the first control switch valve and the third control switch valve, and when the two motors are required to be connected in series, the control device is only required to be operated so as to be positioned at the second control position, and the series connection is realized through the second control switch valve. In the double-motor control system, three control switch valves and one control device are arranged, so that the control devices are used for adjusting the opening and closing of the control switch valves to realize the switching between parallel connection and series connection, and the double-motor control system is simple, convenient and quick to operate. To sum up, the double-motor control system can effectively solve the problem that the double motors are inconvenient to switch in series and parallel.
Preferably, the first control switch valve, the second control switch valve and the third control switch valve are all hydraulic control switch valves, the control device is a reversing valve with one end used for being connected with a liquid supply port, and the other end of the control device is communicated with the hydraulic control ports of the first control switch valve, the second control switch valve and the third control switch valve.
Preferably, still include the tangential valve, the tangential valve includes two inlets and a liquid outlet, just the tangential valve can automatic selection two inlets in the big inlet of hydraulic pressure and liquid outlet intercommunication, two inlets of switching-over valve respectively with first interface with the second interface intercommunication, first control switch valve the second control switch valve with the liquid accuse switch port of third control switch valve all is through controlling means with the liquid outlet intercommunication of tangential valve.
Preferably, the control device is a two-position four-way reversing valve, and when the control device is located at the first control position, the control device is used for communicating a liquid control port of the first control switch valve and a liquid control port of the third control switch valve with a liquid outlet of the tangential valve, and connecting a liquid control port of the second control switch valve with a liquid return tank; and when the second control position is located, the hydraulic control port of the first control switch valve and the hydraulic control port of the third control switch valve can be controlled to be communicated with the liquid return tank, and the hydraulic control port of the second control switch valve is controlled to be communicated with the liquid outlet of the tangential valve.
Preferably, the tangential valve is a shuttle valve.
Preferably, the first control switching valve, the second control switching valve and the third control switching valve are all electromagnetic switching valves.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a fluid path structure of a dual-motor control system provided in an embodiment of the present invention in series connection;
fig. 2 is a schematic view of a parallel connection hydraulic circuit structure of a dual-motor control system according to an embodiment of the present invention.
The drawings are numbered as follows:
the hydraulic control system comprises a first hydraulic motor 1, a second hydraulic motor 2, a first port 3, a second port 4, a first control switch valve 5, a second control switch valve 6, a third control switch valve 7, a control device 8 and a shuttle valve 9.
Detailed Description
The embodiment of the utility model discloses two motor control system to solve this two motor series connection, parallelly connected inconvenient problem of switching effectively.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic diagram of a fluid path structure of a dual-motor control system in series connection according to an embodiment of the present invention; fig. 2 is a schematic view of a parallel connection hydraulic circuit structure of a dual-motor control system according to an embodiment of the present invention.
In a specific embodiment, the present embodiment provides a dual-motor control system, specifically, the dual-motor control system includes a first hydraulic motor 1, a second hydraulic motor 2, a first control switch valve 5, a second control switch valve 6, a third control switch valve 7 and a control device 8, and is provided with a first interface 3 and a second interface 4, wherein the first interface 3 and the second interface 4, in use, one of them is used as a liquid supply port and the other one is used as a liquid return port according to selection.
The first hydraulic motor 1 and the second hydraulic motor 2, i.e. the double motors here, may be identical or slightly different in structure. But all should satisfy, have a corotation import and a corotation export, and: when the forward rotation inlet is communicated with the liquid supply port and the forward rotation outlet is communicated with the liquid return port, the hydraulic motor rotates forward; when the positive rotation inlet is communicated with the liquid return port and the positive rotation outlet is communicated with the liquid supply port, the hydraulic motor rotates reversely at the moment.
Wherein the positive rotation inlet of the first hydraulic motor 1 is communicated with the first interface 3, and the positive rotation outlet of the second hydraulic motor 2 is communicated with the second interface 4, namely directly communicated.
The first end of the first control switch valve 5 is communicated with the first interface 3, and the second end of the first control switch valve is communicated with the positive rotation inlet of the second hydraulic motor 2; a second control switch valve 6, a first end of which is communicated with the positive rotation inlet of the second hydraulic motor 2, and a second end of which is communicated with the positive rotation outlet of the first hydraulic motor 1; and a third control switch valve 7 having a first end communicated with the second port 4 and a second end communicated with the forward rotation outlet of the first hydraulic motor 1.
The control device 8 has at least two control positions, namely a first control position and a second control position, for controlling the first control switch valve 5, the second control switch valve 6 and the third control switch valve 7 respectively. When the control device 8 is located at the first control position, the first control switch valve 5 and the third control switch valve 7 can be controlled to be opened, and the second control switch valve 6 can be controlled to be closed; when the first control position is set, the first control on-off valve 5 and the third control on-off valve 7 can be controlled to be closed, and the second control on-off valve 6 can be controlled to be opened. It should be noted that the first control switch valve 5, the second control switch valve 6, and the third control switch valve 7 may be all pilot-controlled valves, or all electromagnetic switch valves, and the control device 8 is correspondingly arranged according to the above control switch valves.
In a specific application, if the first connector 3 is an oil supply port, the second connector 4 is a liquid return port. The control device 8 is located at the first control position and the second control position, and the whole double-motor control system works as follows.
When the control device 8 is in the first control position, the first control on-off valve 5 and the third control on-off valve 7 are opened and the second control on-off valve 6 is closed due to the control of the control device 8. The first port 3 provides that high-pressure fluid enters through the forward rotation inlet of the first hydraulic motor 1 to drive the forward rotation of the first hydraulic motor 1, and the high-pressure fluid flows out from the forward rotation outlet of the first hydraulic motor 1, and only flows through the third control switch valve 7 to enter the second port 4 because the second control switch valve 6 is closed and the third control switch valve 7 is opened, thereby forming a loop. Meanwhile, because the first control switch valve 5 is opened, the liquid supplied by the first interface 3 also directly flows into the forward rotation inlet of the second hydraulic motor 2 from the first control switch valve 5, at this time, the second hydraulic motor 2 rotates forward, then the high-pressure liquid flows into the second interface 4 from the forward rotation outlet of the second hydraulic motor 2, and a loop is formed, at this time, the first hydraulic motor 1 and the second hydraulic motor 2 form a parallel relation.
When the control device 8 is in the second control position, the first control open/close valve 5 and the third control open/close valve 7 are closed and the second control open/close valve 6 is opened by the control of the control device 8. The first port 3 provides that high-pressure fluid will enter through the forward rotation inlet of the first hydraulic motor 1 to drive the forward rotation of the first hydraulic motor 1, and high-pressure fluid will flow out from the forward rotation outlet of the first hydraulic motor 1, because the third control switch valve 7 is closed, the second control switch valve 6 is opened, only the second control switching valve 6 flows, because the second control switching valve 6 is communicated with the normal rotation inlet of the first hydraulic motor 1, the high-pressure fluid flowing out of the normal rotation outlet port of the first hydraulic motor 1 flows into the normal rotation inlet port of the second hydraulic motor 2 from the second control switch valve 6, and at this time, the second hydraulic motor 2 rotates in the normal direction, and the high-pressure liquid flowing out of the liquid outlet of the second hydraulic motor 2 enters the second connector 4 to return liquid, and thus a circuit, as can be seen from the above, the first hydraulic motor 1 and the second hydraulic motor 2 are in a series relationship.
If the first port 3 is a liquid return port and the second port 4 is a liquid supply port, the internal liquid flows reversely at the two control positions so as to drive the first hydraulic motor 1 and the second hydraulic motor 2 to rotate reversely.
In the dual-motor control system, when two motors need to be connected in parallel, the control device 8 only needs to be operated so that the control device 8 is located at the first control position and connected in parallel through the first control switch valve 5 and the third control switch valve 7, and when two motors need to be connected in series, the control device 8 only needs to be operated so that the control device 8 is located at the second control position and connected in series through the second control switch valve 6. In the double-motor control system, three control switch valves and one control device 8 are arranged, so that the opening and closing of each control switch valve are adjusted through the control device 8, the switching between parallel connection and series connection is realized, and the operation is simple, convenient and fast. To sum up, the double-motor control system can effectively solve the problem that the double motors are inconvenient to switch in series and parallel.
Further, as described above, the first control switch valve 5, the second control switch valve 6, and the third control switch valve 7 may be electromagnetic switch valves, such as being opened by power and closed by power, or being closed by power and opened by power. Specifically, the setting may be performed as needed. At this time, the control device 8 is a circuit switch valve group, and if the electromagnetic switch valve is switched on and off, the circuit switch valve group switches the first control switch valve 5 and the third control switch valve 7 on and the second control switch valve 6 off at the first control position, and switches the first control switch valve 5 and the third control switch valve 7 off and the second control switch valve 6 on at the second control position.
Further, in order to achieve more convenient and reliable control, it is preferable that the first control switch valve 5, the second control switch valve 6, and the third control switch valve 7 are all pilot-operated switch valves, the control device 8 is a reversing valve having one end for connecting a liquid supply port, and the other end of the control device 8 is communicated with pilot-operated ports of the first control switch valve 5, the second control switch valve 6, and the third control switch valve 7, so that high-pressure liquid provided by the liquid supply port is guided into the corresponding switch valve according to different control requirements.
The liquid supply port, which the control device 8 communicates with, may be a separate control liquid port, but this is troublesome. Based on this, preferably still include the tangential valve here, the tangential valve includes two inlet and a liquid outlet, just the tangential valve can select automatically that the inlet that the hydraulic pressure is big in two inlets communicates with the liquid outlet, two inlets of switching-over valve respectively with first interface 3 with second interface 4 communicates, the liquid accuse mouth of first control ooff valve 5, second control ooff valve 6 and third control ooff valve 7 all communicates with the liquid outlet of tangential valve through controlling means 8.
Wherein the tangential valve can be the solenoid electric valve, also can be the sequence valves, and the internal pressure control type, and is specific including two sequence valves, the liquid outlet intercommunication of two sequence valves, as the liquid outlet of whole tangential valve promptly, two inlet of two sequence valves respectively whole tangential valve's two inlet, sequence valve when inlet pressure reaches the predetermined pressure value, control sequence valve promptly and open.
However, the construction of such a tangential valve is relatively complex, and for this reason it is preferred that the tangential valve is a shuttle valve 9. The case of shuttle valve 9 moves according to the pressure differential of two inlet, the big inlet feed liquid of hydraulic pressure can push the case and remove to the little inlet of hydraulic pressure to block up the little inlet of hydraulic pressure, if first interface 3 is for supplying the liquid mouth, second interface 4 is for returning the liquid mouth, the liquid pressure that first interface 3 introduced so will be greater than the liquid pressure that second interface 4 introduced, so that the case moves to the inlet of connecting second interface 4, with block up second interface 4, specifically, prior art can also be referred to the structure of shuttle valve 9.
As regards the control means 8, among others, as mentioned above, it may be a series of valve groups. However, such a structure is complicated, and it is preferable here that the control device 8 is a two-position four-way selector valve in which, when in the first control position, the two-position four-way selector valve is configured to communicate the hydraulic control port of the first control switching valve 5 and the hydraulic control port of the third control switching valve 7 with the liquid outlet of the tangential valve and connect the hydraulic control port of the second control switching valve 6 with the liquid return tank; when the control valve is located at the second control position, the hydraulic control port of the first control switch valve 5 and the hydraulic control port of the third control switch valve 7 can be controlled to be communicated with the liquid return tank, and the hydraulic control port of the second control switch valve 6 is controlled to be communicated with the liquid outlet of the tangential valve. The two-position four-way reversing valve can be an electromagnetic valve or a manual control valve, and can be specifically set as required. It should be noted that, the internal liquid is generally an oil body, that is, hydraulic oil is used.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A dual motor control system, comprising:
the positive rotation inlet of the first hydraulic motor is communicated with the first interface;
the positive rotation outlet of the second hydraulic motor is communicated with the second interface;
the first end of the first control switch valve is communicated with the first interface, and the second end of the first control switch valve is communicated with the forward rotation inlet of the second hydraulic motor;
a first end of the first control switch valve is communicated with a forward rotation inlet of the first hydraulic motor, and a second end of the first control switch valve is communicated with a forward rotation outlet of the second hydraulic motor;
a third control switch valve, the first end of which is communicated with the second interface and the second end of which is communicated with the positive rotation outlet of the first hydraulic motor;
and the control device can control the first control switch valve and the third control switch valve to be opened and control the second control switch valve to be closed when being positioned at a first control position, and can control the first control switch valve and the third control switch valve to be closed and control the second control switch valve to be opened when being positioned at a second control position.
2. The dual-motor control system according to claim 1, wherein the first control switching valve, the second control switching valve, and the third control switching valve are all pilot-operated switching valves, the control device is a selector valve having one end for connecting a fluid supply port, and the other end of the control device is communicated with the pilot-operated ports of the first control switching valve, the second control switching valve, and the third control switching valve.
3. The dual-motor control system as claimed in claim 2, further comprising a tangential valve, wherein the tangential valve comprises two liquid inlets and one liquid outlet, the tangential valve is capable of automatically selecting the liquid inlet with the larger hydraulic pressure from the two liquid inlets to communicate with the liquid outlet, the two liquid inlets of the directional valve are respectively communicated with the first port and the second port, and the hydraulic control ports of the first control switch valve, the second control switch valve and the third control switch valve are all communicated with the liquid outlet of the tangential valve through the control device.
4. The dual-motor control system according to claim 3, wherein the control device is a two-position four-way reversing valve, and when the control device is located at the first control position, the control device is used for communicating the hydraulic control port of the first control switch valve and the hydraulic control port of the third control switch valve with the liquid outlet of the tangential valve, and connecting the hydraulic control port of the second control switch valve with a liquid return tank; and when the second control position is located, the hydraulic control port of the first control switch valve and the hydraulic control port of the third control switch valve can be controlled to be communicated with the liquid return tank, and the hydraulic control port of the second control switch valve is controlled to be communicated with the liquid outlet of the tangential valve.
5. The dual motor control system of claim 4, wherein the tangential valve is a shuttle valve.
6. The dual motor control system of claim 1, wherein the first control switch valve, the second control switch valve, and the third control switch valve are all solenoid switch valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921987125.2U CN210608969U (en) | 2019-11-15 | 2019-11-15 | Double-motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921987125.2U CN210608969U (en) | 2019-11-15 | 2019-11-15 | Double-motor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210608969U true CN210608969U (en) | 2020-05-22 |
Family
ID=70722608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921987125.2U Active CN210608969U (en) | 2019-11-15 | 2019-11-15 | Double-motor control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210608969U (en) |
-
2019
- 2019-11-15 CN CN201921987125.2U patent/CN210608969U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101981260B (en) | Controller of hybrid construction machine | |
| CN106088208B (en) | Excavator turns round hydraulic control system | |
| CN105350598A (en) | Hydraulic control system for improving energy saving performance of loader and control method of hydraulic control system | |
| CN102758813A (en) | Energy-recovery hydraulic system and engineering machinery | |
| CN102979133A (en) | Rotary brake energy recycling device of hydraulic excavator | |
| CN102287413A (en) | Proportional multi-way valve with turning load feedback function | |
| CN112746996B (en) | Load sensitive system and engineering hoisting machinery | |
| CN102021927A (en) | Rotary oil supply loop for hydraulic excavator | |
| CN113882459B (en) | Excavator energy recovery system and excavator | |
| CN102220864B (en) | Hydraulic control system for rotation system of horizontal directional drilling machine | |
| CN112160952A (en) | Hydraulic fan system and engineering machinery | |
| CN200982329Y (en) | Two position two-way plug-in valve type high and low pressure switching valve | |
| CN210608969U (en) | Double-motor control system | |
| CN203717495U (en) | Rotating and pushing self-adaptation hydraulic loop for of hydraulic drill carriage drill rod mounting and dismounting | |
| CN103031957A (en) | Control system and method for concrete machine | |
| CN107387473B (en) | Tandem channel-borrowing type multipath hydraulic control device | |
| CN106812752B (en) | Multiple directional control valve | |
| CN206449032U (en) | A kind of road roller hydraulic system and road roller | |
| CN205190386U (en) | Improve hydraulic control system of loader energy -conservation nature | |
| CN212297076U (en) | Engineering machinery and positive flow hydraulic system | |
| CN112591681A (en) | Portal rises to rise and hydraulic circuit that potential energy was retrieved | |
| CN207935420U (en) | A kind of shift valve block, the more shift control systems of power head and rotary drilling rig | |
| CN202971365U (en) | Automatic control system of serial connection and parallel connection motor | |
| CN217204385U (en) | Hydraulic control valve and excavator hydraulic system | |
| CN219953786U (en) | Double-speed hydraulic system of multi-motor driving rotary mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |