CN214945439U - Hydraulic motor test system - Google Patents
Hydraulic motor test system Download PDFInfo
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- CN214945439U CN214945439U CN202120717654.1U CN202120717654U CN214945439U CN 214945439 U CN214945439 U CN 214945439U CN 202120717654 U CN202120717654 U CN 202120717654U CN 214945439 U CN214945439 U CN 214945439U
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Abstract
An embodiment of the utility model provides a hydraulic motor test system, include: a hydraulic pump; the manual control valve is connected with the hydraulic pump; the two-position two-way electromagnetic valve is connected with the hydraulic pump and is connected with the manual control valve in parallel; two oil inlets of the shuttle valve are respectively connected with the manual control valve and the two-position two-way electromagnetic directional valve; the main control valve is connected with the hydraulic pump and the working oil port of the shuttle valve; and the hydraulic motor is connected with the main control valve. The testing system can realize manual control or electric control of the main control valve to adjust the working state of the hydraulic motor. In addition, in the test system, the control mode of adjusting the working state of the hydraulic motor in a mode of combining the two-position two-way electromagnetic reversing valve and the shuttle valve is adopted, and compared with the test system using the two-position three-way reversing valve in the prior art, the test system can relatively reduce the element cost.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to a hydraulic motor test system.
Background
The hydraulic motor is mainly used for rotary parts and walking parts of engineering machinery such as excavators and the like, and has a wide application range. The hydraulic motor needs to be tested for performance parameters and the like before leaving the factory. In the existing hydraulic motor test system, the switching between manual control and electric control can not be realized generally, and the control mode is single. Meanwhile, only a multi-way reversing valve is used for controlling the reversing of the hydraulic motor in the test system, and the cost is relatively high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydraulic motor test system for hydraulic motor test system's among the solution prior art control mode is single, and test system's the higher problem of component cost, realizes hydraulic motor test system's manual control and electric control, and reduces hydraulic motor test system's the effect of component cost.
According to the utility model provides a pair of hydraulic motor test system, include:
a hydraulic pump;
a manual control valve connected with the hydraulic pump;
a two-position two-way electromagnetic directional valve connected with the hydraulic pump and connected in parallel with the manual control valve;
the two oil inlets of the shuttle valve are respectively connected with the manual control valve and the two-position two-way electromagnetic directional valve;
the main control valve is connected with the hydraulic pump and the working oil port of the shuttle valve;
a hydraulic motor connected with the main control valve.
According to the utility model provides a pair of hydraulic motor test system, manual control valve includes forward manual control valve and reverse manual control valve, two lead to solenoid directional valves include two lead to solenoid directional valves of forward and two lead to solenoid directional valves of reverse, the shuttle valve includes forward shuttle valve and reverse shuttle valve.
The hydraulic pump is connected with the forward manual control valve and the forward two-position two-way electromagnetic reversing valve, the forward manual control valve is connected with the forward two-position two-way electromagnetic reversing valve in parallel, two oil inlets of the forward shuttle valve are respectively connected with the forward manual control valve and the forward two-position two-way electromagnetic reversing valve, and a working oil port of the forward shuttle valve is connected with a pilot control oil path of the main control valve to form a forward control loop.
The hydraulic pump is connected with the reverse manual control valve and the reverse two-way electromagnetic directional valve, the reverse manual control valve is connected with the reverse two-way electromagnetic directional valve in parallel, two oil inlets of the reverse shuttle valve are respectively connected with the reverse manual control valve and the reverse two-way electromagnetic directional valve, and a working oil port of the reverse shuttle valve is connected with a pilot control oil path of the main control valve to form a reverse control loop.
Wherein the forward control loop is connected in parallel with the reverse control loop.
According to the utility model provides a pair of hydraulic motor test system, the hydraulic pump with forward control circuit with set up the guide's solenoid valve between the reverse control circuit, in order to control forward control circuit with the break-make of reverse control circuit.
According to the utility model provides a pair of hydraulic motor test system, the guide's solenoid valve includes two tee bend solenoid directional valves, and, the working oil port of two tee bend solenoid directional valves with forward control circuit with reverse control circuit connects.
According to the utility model provides a pair of hydraulic motor test system, hydraulic motor includes hydraulic pressure swing motor or hydraulic pressure walking motor.
According to the utility model provides a pair of hydraulic motor test system, hydraulic motor test system includes the controller, the controller with two lead to solenoid directional valves of forward two lead to solenoid directional valves of backward two lead to solenoid directional valves with the pilot operated solenoid valve electricity is connected.
According to the utility model provides a pair of hydraulic motor test system, hydraulic motor test system still includes the time-recorder, the time-recorder with the controller electricity is connected.
According to the utility model provides a pair of hydraulic motor test system, hydraulic motor's oil inlet and oil return opening with the working oil port of main control valve is connected, be equipped with the damping hole in the main control valve.
According to the utility model provides a pair of hydraulic motor test system still includes the oil tank, it has hydraulic oil to fill in the oil tank, the hydraulic pump the guide's solenoid valve forward control return circuit reverse control return circuit reaches hydraulic motor all with the oil tank is connected.
According to the utility model provides a pair of hydraulic motor test system, install the brake lever on the manual control valve or control the running-board.
The utility model provides an among the hydraulic motor test system, manual control valve with hydraulic pump connection. The two-position two-way electromagnetic valve is connected with the hydraulic pump and is connected with the manual control valve in parallel. And two oil inlets of the shuttle valve are respectively connected with the manual control valve and the two-position two-way electromagnetic directional valve. And the main control valve is connected with the hydraulic pump and the working oil port of the shuttle valve. The hydraulic motor is connected with the main control valve.
Through the structural arrangement, the manual control valve is connected with the two-position two-way electromagnetic directional valve in parallel. The hydraulic pump is connected with the manual control valve and the two-position two-way electromagnetic directional valve in series to supply oil to the manual control valve or the two-position two-way electromagnetic directional valve. Two oil inlets of the shuttle valve are respectively connected with the manual control valve and the outlet of the two-position two-way electromagnetic directional valve. And the working oil port of the shuttle valve is connected with the pilot control oil way of the main control valve. Therefore, the working state of the hydraulic motor can be adjusted by manually controlling or electrically controlling the main control valve. In addition, in the test system, the control mode of adjusting the working state of the hydraulic motor in a mode of combining the two-position two-way electromagnetic reversing valve and the shuttle valve is adopted, and compared with the test system using the two-position three-way reversing valve in the prior art, the test system can relatively reduce the element cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 system schematic diagram of a hydraulic motor testing system provided by the present invention;
reference numerals:
100: a hydraulic pump; 200: a main control valve;
300: a hydraulic motor; 400: an oil tank;
500: a pilot solenoid valve; 601: a positive manual control valve;
602: a positive two-position two-way electromagnetic directional valve; 603: a forward shuttle valve;
701: a reverse manual control valve; 702: a reverse two-position two-way electromagnetic directional valve;
703: a reversing shuttle valve.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, without mutual contradiction, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification to make the objects, technical solutions, and advantages of the embodiments of the present invention clearer, and the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes a hydraulic motor testing system provided by an embodiment of the present invention with reference to fig. 1. It should be understood that the following description is only exemplary of the present invention and does not constitute any particular limitation of the present invention.
An embodiment of the utility model provides a hydraulic motor test system, as shown in FIG. 1, this hydraulic motor test system includes:
a hydraulic pump 100;
a manual control valve connected to the hydraulic pump 100;
a two-position two-way electromagnetic directional valve connected to the hydraulic pump 100 and connected in parallel to the manual control valve;
two oil inlets of the shuttle valve are respectively connected with the manual control valve and the two-position two-way electromagnetic directional valve;
a main control valve 200, wherein the main control valve 200 is connected with the hydraulic pump 100 and the working oil port of the shuttle valve;
the hydraulic motor 300, the hydraulic motor 300 is connected to the main control valve 200.
The system working principle of the hydraulic motor testing system is as follows: the hydraulic pump 100 is capable of supplying hydraulic oil to the manual control valve and the two-position two-way solenoid directional valve. When the working state of the hydraulic motor 300 needs to be manually controlled, as shown in fig. 1, the manual control valve is in a working state, the two-position two-way electromagnetic directional valve is in a left position, that is, the two-position two-way electromagnetic directional valve is in an oil path stop state, hydraulic oil flowing out through the manual control valve enters the shuttle valve from an oil inlet on the left side of the shuttle valve and pushes a valve core of the shuttle valve to move rightward to block an oil inlet on the right side, and meanwhile, the hydraulic oil enters a pilot control oil path of the main control valve 200 from a working oil port of the shuttle valve to drive the main control valve 200 to change direction and adjust the working state of the hydraulic motor 300.
When the operation state of the electric control hydraulic motor 300 is required, the manual control valve is in a cut-off state as shown in fig. 1. The two-position two-way electromagnetic directional valve is in the right position, namely, the two-position two-way electromagnetic directional valve is in an oil path conduction state, hydraulic oil flowing out of the two-position two-way electromagnetic directional valve enters the shuttle valve from an oil inlet on the right side of the shuttle valve and pushes a valve core of the shuttle valve to move left to block an oil inlet on the left side, meanwhile, the hydraulic oil enters a pilot control oil path of the main control valve 200 from a working oil port of the shuttle valve to drive the main control valve 200 to change direction, and the working state of the hydraulic motor 300 is adjusted.
Through the structural arrangement, the manual control valve is connected with the two-position two-way electromagnetic directional valve in parallel. The hydraulic pump 100 is connected in series with both the manual control valve and the two-position two-way electromagnetic directional valve to supply oil to the manual control valve or the two-position two-way electromagnetic directional valve. Two oil inlets of the shuttle valve are respectively connected with the manual control valve and the outlet of the two-position two-way electromagnetic directional valve. The working oil port of the shuttle valve is connected to the pilot control oil passage of the main control valve 200. This enables the main control valve 200 to be controlled manually or electrically to adjust the operating state of the hydraulic motor 300. In addition, in the test system, the control mode of adjusting the working state of the hydraulic motor 300 by using the mode of combining the two-position two-way electromagnetic directional valve and the shuttle valve is adopted, and compared with the test system using the two-position three-way directional valve in the prior art, the test system can relatively reduce the element cost.
In an embodiment of the present invention, the oil inlet and the oil return port of the hydraulic motor 300 are connected to the working oil port of the main control valve 200. A damping orifice is provided in the main control valve 200.
According to the above-described embodiments, by providing the damping hole in the main control valve 200, the impact of the hydraulic oil on the hydraulic motor 300 can be reduced, and the hydraulic motor 300 is effectively protected.
In one embodiment of the present invention, the manual control valve includes a forward manual control valve 601 and a reverse manual control valve 701. The two-position two-way solenoid directional valve includes a forward two-position two-way solenoid directional valve 602 and a reverse two-position two-way solenoid directional valve 702. The shuttle valves include a forward shuttle valve 603 and a reverse shuttle valve 703.
The hydraulic pump 100 is connected to a forward manual control valve 601 and a forward two-position two-way electromagnetic directional valve 602. The forward manual control valve 601 is connected in parallel with the forward two-position two-way electromagnetic directional valve 602. Two oil inlets of the forward shuttle valve 603 are respectively connected with the forward manual control valve 601 and the forward two-position two-way electromagnetic directional valve 602. The working oil port of the forward shuttle valve 603 is connected to the pilot control oil passage of the main control valve 200 to form a forward control circuit.
The hydraulic pump 100 is connected to a reverse manual control valve 701 and a reverse two-position two-way electromagnetic directional valve 702. The reverse manual control valve 701 is connected in parallel with the reverse two-position two-way electromagnetic directional valve 702. Two oil inlets of the reverse shuttle valve 703 are respectively connected with the reverse manual control valve 701 and the reverse two-position two-way electromagnetic directional valve 702. The working oil port of the reverse shuttle valve 703 is connected to the pilot control oil passage of the main control valve 200 to form a reverse control circuit.
And, the forward control loop is connected in parallel with the reverse control loop.
Specifically, as shown in fig. 1, in the forward control loop, a forward manual control valve 601 is connected in parallel with a forward two-position two-way electromagnetic directional valve 602. The hydraulic pump 100 is connected in series with the forward manual control valve 601 and the forward two-position two-way electromagnetic directional valve 602 to supply oil to the forward manual control valve 601 and the forward two-position two-way electromagnetic directional valve 602. An oil inlet at the left end of the forward shuttle valve 603 is communicated with an outlet of the forward manual control valve 601, and an oil inlet at the right end of the forward shuttle valve 603 is communicated with an outlet of the forward two-position two-way electromagnetic directional valve 602. The working oil port of the forward shuttle valve 603 is communicated with a pilot control oil passage at the right end of the main control valve 200.
In the reverse control loop, the reverse manual control valve 701 is connected in parallel with the reverse two-position two-way electromagnetic directional valve 702 to supply oil to the reverse manual control valve 701 and the reverse two-position two-way electromagnetic directional valve 702. An oil inlet at the left end of the reverse shuttle valve 703 is communicated with an outlet of the reverse two-position two-way electromagnetic directional valve 702, and an oil inlet at the right end of the reverse shuttle valve 703 is communicated with an outlet of the reverse manual control valve 701. The working oil port of the reverse shuttle valve 703 is communicated with the pilot control oil passage at the left end of the main control valve 200.
In a specific working process, as shown in fig. 1, when the hydraulic motor 300 needs to be manually controlled to rotate in the forward direction, the forward manual control valve 601 is in a working state, and the forward two-position two-way electromagnetic directional valve 602 is in the left position, that is, the forward two-position two-way electromagnetic directional valve 602 is in an oil path cut-off state. The hydraulic pump 100 supplies oil into the forward manual control valve 601, and hydraulic oil flowing out of the forward manual control valve 601 enters the forward shuttle valve 603 from an oil inlet at the left end of the forward shuttle valve 603 and pushes a valve core of the forward shuttle valve 603 to move rightwards to block an oil inlet at the right end of the forward shuttle valve 603. Meanwhile, hydraulic oil enters the right pilot control oil path of the main control valve 200 from the working oil port of the forward shuttle valve 603 to drive the main control valve 200 to switch to the right position, and the hydraulic pump 100 supplies oil to the hydraulic motor 300 to drive the hydraulic motor 300 to rotate in the forward direction. At this time, the reverse manual control valve 701 and the reverse two-position two-way electromagnetic directional valve 702 are both in a cut-off state.
As shown in fig. 1, when the electric control hydraulic motor 300 needs to rotate in the forward direction, the forward manual control valve 601 is in a cut-off state, and the forward two-position two-way electromagnetic directional valve 602 is in the right position, that is, the forward two-position two-way electromagnetic directional valve 602 is in an oil passage conducting state. The hydraulic pump 100 supplies oil to the forward two-position two-way electromagnetic directional valve 602, and hydraulic oil flowing out of the forward two-position two-way electromagnetic directional valve 602 enters the forward shuttle valve 603 from an oil inlet at the right end of the forward shuttle valve 603 and pushes a valve core of the forward shuttle valve 603 to move leftward to block the oil inlet at the left end. Meanwhile, hydraulic oil enters the right pilot control oil path of the main control valve 200 from the working oil port of the forward shuttle valve 603 to drive the main control valve 200 to switch to the right position, and the hydraulic pump 100 supplies oil to the hydraulic motor 300 to drive the hydraulic motor 300 to rotate in the forward direction. At this time, the reverse manual control valve 701 and the reverse two-position two-way electromagnetic directional valve 702 are both in a cut-off state.
As shown in fig. 1, when the hydraulic motor 300 needs to be manually controlled to rotate in the reverse direction, the reverse manual control valve 701 is in a working state, and the reverse two-position two-way electromagnetic directional valve 702 is in a right position, that is, the reverse two-position two-way electromagnetic directional valve 702 is in an oil path stop state. The hydraulic pump 100 supplies oil into the reverse manual control valve 701, and hydraulic oil flowing out of the reverse manual control valve 701 enters the reverse shuttle valve 703 from an oil inlet at the right end of the reverse shuttle valve 703 and pushes a valve core of the reverse shuttle valve 703 to move leftward to block the oil inlet at the left end thereof. Meanwhile, hydraulic oil enters the left pilot control oil path of the main control valve 200 from the working oil port of the reverse shuttle valve 703 to drive the main control valve 200 to switch to the left position, and the hydraulic pump 100 supplies oil to the hydraulic motor 300 to drive the hydraulic motor 300 to rotate reversely. At this time, both the forward manual control valve 601 and the forward two-position two-way electromagnetic directional valve 602 are in a cut-off state.
As shown in fig. 1, when the electric control hydraulic motor 300 needs to rotate in the reverse direction, the reverse manual control valve 701 is in a cut-off state, and the reverse two-position two-way electromagnetic directional valve 702 is in a left position, that is, the reverse two-position two-way electromagnetic directional valve 702 is in an oil passage conduction state. The hydraulic pump 100 supplies oil to the reverse two-position two-way electromagnetic directional valve 702, hydraulic oil flowing out of the reverse two-position two-way electromagnetic directional valve 702 enters the reverse shuttle valve 703 from an oil inlet at the left end of the reverse shuttle valve 703, and pushes a valve core of the reverse shuttle valve 703 to move rightwards to block an oil inlet at the right end of the reverse shuttle valve 703. Meanwhile, hydraulic oil enters the left pilot control oil path of the main control valve 200 from the working oil port of the reverse shuttle valve 703 to drive the main control valve 200 to switch to the left position, and the hydraulic pump 100 supplies oil to the hydraulic motor 300 to drive the hydraulic motor 300 to rotate reversely. At this time, both the forward manual control valve 601 and the forward two-position two-way electromagnetic directional valve 602 are in a cut-off state.
In an embodiment of the present invention, a pilot solenoid valve 500 is disposed between the hydraulic pump 100 and the forward control loop and the reverse control loop to control the on/off of the forward control loop and the reverse control loop.
Further, in an embodiment of the present invention, the pilot solenoid valve 500 includes a two-position three-way electromagnetic directional valve. And the working oil port of the two-position three-way electromagnetic directional valve is connected with the forward control loop and the reverse control loop.
As shown in fig. 1, the pilot electromagnetic valve 500 is a two-position three-way electromagnetic directional valve, an oil inlet of the two-position three-way electromagnetic directional valve is connected to the hydraulic pump 100, and a working oil port of the two-position three-way electromagnetic directional valve is connected to the forward manual control valve 601, the forward two-position two-way electromagnetic directional valve 602, the reverse manual control valve 701, and the reverse two-position two-way electromagnetic directional valve 702 through a pipeline.
When the two-position three-way solenoid valve is in the right position, the oil supply path of the hydraulic pump 100 is cut off. At this time, the hydraulic motor test system is in a stopped state.
When the two-position three-way electromagnetic directional valve is switched to the left position, the hydraulic oil supplied by the hydraulic pump 100 can flow to the forward control circuit or the reverse control circuit through the two-position three-way electromagnetic directional valve, and then the forward and reverse rotation of the hydraulic motor 300 is controlled through the forward two-position two-way electromagnetic directional valve 602 and the reverse two-position two-way electromagnetic directional valve 702. At this time, the hydraulic motor test system is in an operating state.
It should be noted here that in one embodiment of the present invention, the hydraulic motor 300 includes a hydraulic swing motor or a hydraulic travel motor.
In one embodiment of the present invention, a hydraulic motor testing system includes a controller. The controller is electrically connected to the forward two-position two-way electromagnetic directional valve 602, the reverse two-position two-way electromagnetic directional valve 702, and the pilot electromagnetic valve 500.
Specifically, the controller can adjust the operating position of the pilot solenoid valve 500. For example, the controller can control the pilot solenoid valve 500 to be switched to the left position and generate the pilot pressure to supply the hydraulic pump 100 with oil into the forward control circuit or the reverse control circuit. Meanwhile, the controller can also control the forward two-position two-way electromagnetic directional valve 602 and the reverse two-position two-way electromagnetic directional valve 702 to be transposed, so as to control the hydraulic motor to rotate forwards or backwards.
In an embodiment of the present invention, the hydraulic motor testing system further includes a timer, and the timer is electrically connected to the controller.
For example, the controller is provided with a rotation period of the hydraulic motor 300, and inputs a target rotation angle value of the hydraulic motor 300. The controller can calculate the time required to rotate to the target angle. When the counted time of the timer reaches the target value, it indicates that the hydraulic motor 300 has rotated to the target angle value at this time.
As shown in fig. 1, the controller can control the pilot solenoid valve 500 to be switched to the left position to generate a pilot pressure so that the hydraulic pump 100 supplies oil into the forward control circuit or the reverse control circuit. In performing the motoring test, a target rotation angle value of the hydraulic motor 300 is determined. The power-on time of the forward two-position two-way electromagnetic directional valve 602 and the reverse two-position two-way electromagnetic directional valve 702 is controlled by a timer and a controller, so as to control the forward rotation and the reverse rotation of the hydraulic motor and the target angle value of the forward rotation and the reverse rotation of the hydraulic motor. Finally, the control of the rotation angle of the rotary motor or the test of the rotation durability of the unilateral walking motor is realized.
In one embodiment of the present invention, as shown in fig. 1, the hydraulic motor testing system further comprises an oil tank 400. The oil tank 400 is filled with hydraulic oil. The hydraulic pump 100, the pilot solenoid valve 500, the forward control circuit, the reverse control circuit, and the hydraulic motor 300 are all connected to the oil tank 400.
Accordingly, the hydraulic motor 300 can draw the oil in the oil tank 400 and supply the oil to the pilot solenoid valve 500, the forward control circuit, the reverse control circuit, and the hydraulic motor 300. Meanwhile, the oil of the pilot solenoid valve 500, the forward control circuit, the reverse control circuit, and the hydraulic motor 300 may flow back to the inside of the oil tank 400.
In one embodiment of the present invention, the manual control valve is provided with a control handle or a control pedal.
Specifically, for example, one manipulation handle is installed on each of the forward manual control valve 601 and the reverse manual control valve 701. When the hydraulic motor 300 needs to be controlled to rotate in the forward direction manually, the operating handle on the forward manual control valve 601 is pulled, so that the oil path of the forward manual control valve 601 is in a forward conduction state, and the hydraulic motor 300 rotates in the forward direction. Similarly, when the hydraulic motor 300 needs to be controlled to rotate reversely, the operating handle on the reverse manual control valve 701 is pulled, so that the oil path of the reverse manual control valve 701 is in a reverse conducting state, and the hydraulic motor 300 rotates reversely.
For another example, a manipulation pedal is installed on each of the forward manual control valve 601 and the reverse manual control valve 701. When the hydraulic motor 300 needs to be manually controlled to rotate in the forward direction, the operating pedal on the forward manual control valve 601 is stepped on, so that the oil path of the forward manual control valve 601 is in a forward conduction state, and the hydraulic motor 300 further rotates in the forward direction. Similarly, when the hydraulic motor 300 needs to be manually controlled to rotate reversely, the operating pedal on the reverse manual control valve 701 is stepped on, so that the oil passage of the reverse manual control valve 701 is in a reverse conducting state, and the hydraulic motor 300 rotates reversely.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A hydraulic motor testing system, comprising:
a hydraulic pump;
a manual control valve connected with the hydraulic pump;
a two-position two-way electromagnetic directional valve connected with the hydraulic pump and connected in parallel with the manual control valve;
the two oil inlets of the shuttle valve are respectively connected with the manual control valve and the two-position two-way electromagnetic directional valve;
the main control valve is connected with the hydraulic pump and the working oil port of the shuttle valve;
a hydraulic motor connected with the main control valve.
2. The hydraulic motor testing system of claim 1, wherein the manual control valves include a forward manual control valve and a reverse manual control valve, the two-position two-way solenoid directional valve includes a forward two-position two-way solenoid directional valve and a reverse two-position two-way solenoid directional valve, the shuttle valve includes a forward shuttle valve and a reverse shuttle valve,
the hydraulic pump is connected with the forward manual control valve and the forward two-position two-way electromagnetic reversing valve, the forward manual control valve is connected with the forward two-position two-way electromagnetic reversing valve in parallel, two oil inlets of the forward shuttle valve are respectively connected with the forward manual control valve and the forward two-position two-way electromagnetic reversing valve, and a working oil port of the forward shuttle valve is connected with a pilot control oil path of the main control valve to form a forward control loop;
the hydraulic pump is connected with the reverse manual control valve and the reverse two-position two-way electromagnetic directional valve, the reverse manual control valve is connected with the reverse two-position two-way electromagnetic directional valve in parallel, two oil inlets of the reverse shuttle valve are respectively connected with the reverse manual control valve and the reverse two-position two-way electromagnetic directional valve, and a working oil port of the reverse shuttle valve is connected with a pilot control oil path of the main control valve to form a reverse control loop;
wherein the forward control loop is connected in parallel with the reverse control loop.
3. The hydraulic motor test system of claim 2, wherein pilot solenoid valves are provided between the hydraulic pump and the forward and reverse control circuits to control the on and off of the forward and reverse control circuits.
4. The hydraulic motor test system of claim 3, wherein the pilot solenoid valve comprises a two-position three-way solenoid directional valve, and a working oil port of the two-position three-way solenoid directional valve is connected with the forward control circuit and the reverse control circuit.
5. The hydraulic motor testing system of claim 1, wherein the hydraulic motor comprises a hydraulic swing motor or a hydraulic travel motor.
6. The hydraulic motor test system of claim 3, comprising a controller electrically connected to the forward two-position two-way solenoid directional valve, the reverse two-position two-way solenoid directional valve, and the pilot solenoid valve.
7. The hydraulic motor test system of claim 6, further comprising a timer electrically connected to the controller.
8. The hydraulic motor test system according to claim 1, wherein an oil inlet and an oil return port of the hydraulic motor are connected to a working oil port of the main control valve, and a damping hole is provided in the main control valve.
9. The hydraulic motor test system of claim 3, further comprising an oil tank filled with hydraulic oil, wherein the hydraulic pump, the pilot solenoid valve, the forward control loop, the reverse control loop, and the hydraulic motor are all connected to the oil tank.
10. The hydraulic motor testing system of claim 1, wherein the manual control valve has a control handle or a control foot pedal mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120717654.1U CN214945439U (en) | 2021-04-08 | 2021-04-08 | Hydraulic motor test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120717654.1U CN214945439U (en) | 2021-04-08 | 2021-04-08 | Hydraulic motor test system |
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| Publication Number | Publication Date |
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| CN214945439U true CN214945439U (en) | 2021-11-30 |
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| CN202120717654.1U Active CN214945439U (en) | 2021-04-08 | 2021-04-08 | Hydraulic motor test system |
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| CN (1) | CN214945439U (en) |
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2021
- 2021-04-08 CN CN202120717654.1U patent/CN214945439U/en active Active
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