CN219888415U - Hydraulic control system of shaft heading machine and shaft heading machine - Google Patents
Hydraulic control system of shaft heading machine and shaft heading machine Download PDFInfo
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- CN219888415U CN219888415U CN202321562407.4U CN202321562407U CN219888415U CN 219888415 U CN219888415 U CN 219888415U CN 202321562407 U CN202321562407 U CN 202321562407U CN 219888415 U CN219888415 U CN 219888415U
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Abstract
The utility model provides a hydraulic control system of a vertical shaft heading machine and the vertical shaft heading machine, wherein the hydraulic control system comprises: the device comprises an oil pump, an oil tank, a three-position four-way electromagnetic reversing valve, a three-position four-way hydraulic control reversing valve and a normally closed stop valve. The three-position four-way electromagnetic reversing valve is used for controlling the left and right paths of the three-position four-way hydraulic reversing valve to switch, so that the three-position four-way hydraulic reversing valve is used for controlling the extending and retracting of the working oil cylinder of the vertical shaft heading machine, an emergency control oil path for opening the right path of the three-position four-way hydraulic reversing valve is additionally arranged, and the normally closed stop valve is arranged on the emergency control oil path, so that when an underground electrical system fails, the normally closed stop valve is opened, the right path of the three-position four-way hydraulic reversing valve can be controlled to be opened, the working oil cylinder of the vertical shaft heading machine is controlled to retract, namely, each actuating mechanism of the vertical shaft heading machine is reset to a lifting-allowed gesture, and the vertical shaft heading machine is conveniently lifted to the ground for maintenance.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a hydraulic control system of a shaft heading machine and the shaft heading machine.
Background
The shaft heading machine is usually operated in a water well with the depth of tens of meters, and the main bin and the pipe pieces are fixed through bolts. Once the electric control circuit fails, each excavation working mechanism of the heading machine cannot act, and personnel can not easily enter the machine for maintenance. Therefore, a remote emergency operation system is required to be arranged on the ground, and each mechanism of the vertical shaft heading machine can be quickly and conveniently reset after the electric failure, so that the vertical shaft heading machine is conveniently hoisted to the ground for maintenance.
Disclosure of Invention
The utility model aims to solve the technical problems in the prior art, provides a hydraulic control system of a vertical shaft heading machine, and simultaneously, when the excavation work of the vertical shaft heading machine under the normal working condition is completed, each actuating mechanism of the vertical shaft heading machine can be reset to a posture allowing hoisting to be lifted when an underground main machine electrical system fails, and correspondingly provides the vertical shaft heading machine with the hydraulic control system of the vertical shaft heading machine.
The technical scheme adopted for solving the technical problems of the utility model is as follows:
the utility model provides a hydraulic control system of a vertical shaft heading machine, which comprises the following components:
an oil pump, an oil tank, a three-position four-way electromagnetic reversing valve, a three-position four-way hydraulic control reversing valve and a normally closed stop valve,
an oil inlet of the three-position four-way electromagnetic reversing valve is communicated with an oil pump, an oil return port of the three-position four-way electromagnetic reversing valve is communicated with an oil tank, a first working oil port of the three-position four-way electromagnetic reversing valve is communicated with a left reversing control oil port of the three-position four-way hydraulic reversing valve, a second working oil port of the three-position four-way electromagnetic reversing valve is communicated with a right reversing control oil port of the three-position four-way hydraulic reversing valve,
an oil inlet of the three-position four-way hydraulic control reversing valve is communicated with an oil pump, an oil return port of the three-position four-way hydraulic control reversing valve is communicated with an oil tank, a first working oil port of the three-position four-way hydraulic control reversing valve is communicated with a rodless cavity of a working oil cylinder of a vertical shaft heading machine, a second working oil port of the three-position four-way hydraulic control reversing valve is communicated with a rod cavity of the working oil cylinder of the vertical shaft heading machine,
the right-position control oil port of the three-position four-way hydraulic control reversing valve is also communicated with an oil pump, the normally closed stop valve is arranged on an oil way of the right-position reversing control oil port of the three-position four-way hydraulic control reversing valve communicated with the oil pump,
the oil pump is communicated with the oil tank,
when the left channel of the three-position four-way electromagnetic directional valve is powered on, the oil pump can pump the hydraulic oil of the system hydraulic oil channel into the left-position reversing control oil port of the three-position four-way hydraulic directional valve through the left channel of the three-position four-way electromagnetic directional valve so as to open the left channel of the three-position four-way hydraulic directional valve, and simultaneously, the oil pump pumps the hydraulic oil of the system hydraulic oil channel into the rodless cavity of the working oil cylinder through the left channel of the three-position four-way hydraulic directional valve so as to extend the working oil cylinder,
when the right channel of the three-position four-way electromagnetic directional valve is electrified, the oil pump can pump hydraulic oil of a system hydraulic oil channel into a right control oil port of the three-position four-way hydraulic directional valve through the right channel of the three-position four-way electromagnetic directional valve so as to open the right channel of the three-position four-way hydraulic directional valve, meanwhile, the oil pump pumps the hydraulic oil of the system hydraulic oil channel into a right rod cavity of a working oil cylinder through the right channel of the three-position four-way hydraulic directional valve so as to retract the working oil cylinder,
when the three-position four-way electromagnetic reversing valve is in the middle position in a power failure mode, the normally closed stop valve can be opened manually or automatically, the oil pump can pump hydraulic oil of a system hydraulic oil way into a right-position control oil port of the three-position four-way hydraulic control reversing valve so that the right path of the three-position four-way hydraulic control reversing valve is opened, and meanwhile, the oil pump pumps hydraulic oil of the system hydraulic oil way into a right rod cavity of a working oil cylinder through the right path of the three-position four-way hydraulic control reversing valve so as to enable the working oil cylinder to be retracted.
Optionally, the hydraulic control system also comprises a shuttle valve, wherein the shuttle valve is simultaneously positioned on an oil path of which a second working oil port of the three-position four-way electromagnetic reversing valve is communicated with a right reversing control oil port of the three-position four-way hydraulic control reversing valve and an oil path of which the right reversing control oil port is communicated with an oil pump,
the left oil inlet of the shuttle valve is communicated with the second working oil port of the three-position four-way electromagnetic reversing valve, the right oil inlet of the shuttle valve is communicated with the oil pump, and the oil outlet of the shuttle valve is communicated with the right control oil port of the three-position four-way hydraulic control reversing valve.
Optionally, the hydraulic control reversing valve further comprises a pressure reducing valve, and the pressure reducing valve is positioned on an oil path of the right reversing control oil port of the three-position four-way hydraulic control reversing valve, which is communicated with the oil pump.
Optionally, the hydraulic control reversing valve further comprises a normally open stop valve, a bypass oil way is connected to an oil way for communicating the right reversing control oil port of the three-position four-way hydraulic control reversing valve with the oil pump, the bypass oil way is communicated with the oil tank, and the normally open stop valve is arranged on the bypass oil way.
Optionally, the working cylinders are provided with a plurality of three-position four-way electromagnetic reversing valves, three-position four-way hydraulic control reversing valves and shuttle valves, which are respectively provided with a plurality of working cylinders and are in one-to-one correspondence with the working cylinders.
Optionally, the normally closed stop valve, the pressure reducing valve and the normally open stop valve are also respectively provided with a plurality of normally closed stop valves and are in one-to-one correspondence with the plurality of working cylinders.
Optionally, the hydraulic control reversing valve further comprises a pressure reducing valve and a normally open stop valve, wherein the pressure reducing valve is positioned on an oil path formed by communicating a right reversing control oil port of the three-position four-way hydraulic control reversing valve with the oil pump, a bypass oil path is connected to the oil path formed by communicating the right reversing control oil port of the three-position four-way hydraulic control reversing valve with the oil pump, the bypass oil path is communicated with the oil tank, and the normally open stop valve is arranged on the bypass oil path.
Optionally, the working cylinders are provided with a plurality of three-position four-way electromagnetic reversing valves and three-position four-way hydraulic control reversing valves, and the three-position four-way electromagnetic reversing valves and the three-position four-way hydraulic control reversing valves are respectively provided with a plurality of working cylinders and correspond to the working cylinders one by one.
Optionally, the normally closed stop valve, the pressure reducing valve and the normally open stop valve are also respectively provided with a plurality of normally closed stop valves and are in one-to-one correspondence with the plurality of working cylinders.
The utility model also provides a shaft heading machine, which comprises a working oil cylinder and the shaft heading machine hydraulic control system.
The beneficial effects are that:
according to the utility model, an emergency control oil way is formed by designing a hydraulic control system of the vertical shaft heading machine, which comprises an oil pump, an oil tank, a three-position four-way electromagnetic reversing valve, a three-position four-way hydraulic control reversing valve and a normally closed stop valve; the hydraulic pump and the electromagnetic directional valve form a conventional control oil way, and the hydraulic pump and the three-position four-way hydraulic control directional valve form an execution oil way. The three-position four-way hydraulic control reversing valve is used for controlling the left and right paths of the three-position four-way hydraulic control reversing valve to switch, so that the three-position four-way hydraulic control reversing valve is used for controlling the extending and retracting of the working cylinder of the vertical shaft heading machine, an emergency control oil path for opening the right path of the three-position four-way hydraulic control reversing valve is additionally arranged, and the normally closed stop valve is arranged on the emergency control oil path, so that when an underground electrical system fails, the normally closed stop valve is opened, the right path of the three-position four-way hydraulic control reversing valve can be controlled to be opened, the working cylinder of the vertical shaft heading machine is controlled to retract, namely, each actuating mechanism of the vertical shaft heading machine is reset to a lifting-allowed gesture, and the vertical shaft heading machine is conveniently hoisted to the ground for maintenance.
The utility model can respectively control the hydraulic control reversing valves to independently reverse by utilizing the electromagnetic reversing valves, and can also adopt a remote emergency control oil way to simultaneously reverse the hydraulic control reversing valves. The purpose that each oil cylinder can be quickly and simply retracted to reset each actuating mechanism under the conditions that each oil cylinder independently extends and retracts and electrical failure occurs during normal operation is achieved.
Drawings
Fig. 1 is a schematic diagram of a structure of a hydraulic control system of a shaft boring machine for controlling extension of a working cylinder according to embodiment 1 of the present utility model;
fig. 2 is a schematic structural diagram of a hydraulic control system of a shaft boring machine for controlling retraction of a working cylinder according to embodiment 1 of the present utility model;
fig. 3 is a schematic structural diagram of the hydraulic control system of the shaft boring machine according to embodiment 1 of the present utility model for emergency control of retraction of the working cylinder when the underground electrical system fails.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent, and the embodiments described in detail, but not necessarily all, in connection with the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by "upper" or the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience and simplicity of description, and is not meant to indicate or imply that the apparatus or element to be referred to must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the terms "first," "second," 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 present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be either fixedly connected or detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood by those skilled in the art in specific cases.
The utility model provides a hydraulic control system of a vertical shaft heading machine, which comprises the following components:
an oil pump, an oil tank, a three-position four-way electromagnetic reversing valve, a three-position four-way hydraulic control reversing valve and a normally closed stop valve,
an oil inlet of the three-position four-way electromagnetic reversing valve is communicated with an oil pump, an oil return port of the three-position four-way electromagnetic reversing valve is communicated with an oil tank, a first working oil port of the three-position four-way electromagnetic reversing valve is communicated with a left reversing control oil port of the three-position four-way hydraulic reversing valve, a second working oil port of the three-position four-way electromagnetic reversing valve is communicated with a right reversing control oil port of the three-position four-way hydraulic reversing valve,
an oil inlet of the three-position four-way hydraulic control reversing valve is communicated with an oil pump, an oil return port of the three-position four-way hydraulic control reversing valve is communicated with an oil tank, a first working oil port of the three-position four-way hydraulic control reversing valve is communicated with a rodless cavity of a working oil cylinder of a vertical shaft heading machine, a second working oil port of the three-position four-way hydraulic control reversing valve is communicated with a rod cavity of the working oil cylinder of the vertical shaft heading machine,
the right-position control oil port of the three-position four-way hydraulic control reversing valve is also communicated with an oil pump, the normally closed stop valve is arranged on an oil way of the right-position reversing control oil port of the three-position four-way hydraulic control reversing valve communicated with the oil pump,
the oil pump is communicated with the oil tank,
when the left channel of the three-position four-way electromagnetic directional valve is powered on, the oil pump can pump the hydraulic oil of the system hydraulic oil channel into the left-position reversing control oil port of the three-position four-way hydraulic directional valve through the left channel of the three-position four-way electromagnetic directional valve so as to open the left channel of the three-position four-way hydraulic directional valve, and simultaneously, the oil pump pumps the hydraulic oil of the system hydraulic oil channel into the rodless cavity of the working oil cylinder through the left channel of the three-position four-way hydraulic directional valve so as to extend the working oil cylinder,
when the right channel of the three-position four-way electromagnetic directional valve is electrified, the oil pump can pump hydraulic oil of a system hydraulic oil channel into a right control oil port of the three-position four-way hydraulic directional valve through the right channel of the three-position four-way electromagnetic directional valve so as to open the right channel of the three-position four-way hydraulic directional valve, meanwhile, the oil pump pumps the hydraulic oil of the system hydraulic oil channel into a right rod cavity of a working oil cylinder through the right channel of the three-position four-way hydraulic directional valve so as to retract the working oil cylinder,
when the three-position four-way electromagnetic reversing valve is in the middle position in a power failure mode, the normally closed stop valve can be opened manually or automatically, the oil pump can pump hydraulic oil of a system hydraulic oil way into a right-position control oil port of the three-position four-way hydraulic control reversing valve so that the right path of the three-position four-way hydraulic control reversing valve is opened, and meanwhile, the oil pump pumps hydraulic oil of the system hydraulic oil way into a right rod cavity of a working oil cylinder through the right path of the three-position four-way hydraulic control reversing valve so as to enable the working oil cylinder to be retracted.
The utility model also provides a shaft heading machine, which comprises a working oil cylinder and the shaft heading machine hydraulic control system.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides a hydraulic control system of a shaft boring machine, including:
the oil pump 100, the oil tank, the three-position four-way electromagnetic reversing valve 700, the three-position four-way hydraulic control reversing valve 500 and the normally closed stop valve 200,
an oil inlet of the three-position four-way electromagnetic directional valve 700 is communicated with the oil pump 100, an oil return port of the three-position four-way electromagnetic directional valve 700 is communicated with an oil tank, a first working oil port of the three-position four-way electromagnetic directional valve 700 is communicated with a left directional control oil port of the three-position four-way hydraulic control directional valve 500, a second working oil port of the three-position four-way electromagnetic directional valve 700 is communicated with a right directional control oil port of the three-position four-way hydraulic control directional valve 500,
an oil inlet of the three-position four-way hydraulic control reversing valve 500 is communicated with the oil pump 100, an oil return port of the three-position four-way hydraulic control reversing valve 500 is communicated with an oil tank, a first working oil port of the three-position four-way hydraulic control reversing valve 500 is communicated with a rodless cavity of a working oil cylinder of a shaft heading machine, a second working oil port of the three-position four-way hydraulic control reversing valve 500 is communicated with a rod cavity of the working oil cylinder of the shaft heading machine,
the right control oil port of the three-position four-way hydraulic control reversing valve 500 is also communicated with the oil pump 100, the normally closed stop valve 200 is arranged on an oil path of the right reversing control oil port of the three-position four-way hydraulic control reversing valve 500 communicated with the oil pump 100,
the oil pump 100 is in communication with an oil tank,
as shown in fig. 1, when the left path of the three-position four-way electromagnetic directional valve 700 is powered, the oil pump 100 can pump the hydraulic oil of the system hydraulic oil path into the left directional control oil port of the three-position four-way hydraulic directional valve 500 through the left path of the three-position four-way electromagnetic directional valve 700, so that the left path of the three-position four-way hydraulic directional valve 500 is opened, and at the same time, the oil pump 100 pumps the hydraulic oil of the system hydraulic oil path into the rodless cavity of the working cylinder through the left path of the three-position four-way hydraulic directional valve 500, so that the working cylinder extends,
as shown in fig. 2, when the right path of the three-position four-way electromagnetic directional valve 700 is powered, the oil pump 100 can pump the hydraulic oil of the system hydraulic oil path into the right control oil port of the three-position four-way hydraulic directional valve 500 through the right path of the three-position four-way electromagnetic directional valve 700, so that the right path of the three-position four-way hydraulic directional valve 500 is opened, and at the same time, the oil pump 100 pumps the hydraulic oil of the system hydraulic oil path into the right rod cavity of the working oil cylinder through the right path of the three-position four-way hydraulic directional valve 500, so that the working oil cylinder is retracted,
as shown in fig. 3, when the three-position four-way electromagnetic directional valve 700 is in the neutral position, the normally closed stop valve 200 can be opened manually or automatically, the oil pump 100 can pump the hydraulic oil of the system hydraulic oil path into the right control oil port of the three-position four-way hydraulic directional valve 500, so that the right path of the three-position four-way hydraulic directional valve 500 is opened, and simultaneously, the oil pump 100 pumps the hydraulic oil of the system hydraulic oil path into the right rod cavity of the working oil cylinder through the right path of the three-position four-way hydraulic directional valve 500, so that the working oil cylinder is retracted.
Therefore, by designing a hydraulic control system of the shaft heading machine comprising the oil pump 100, the oil tank, the three-position four-way electromagnetic directional valve 700, the three-position four-way hydraulic control directional valve 500 and the normally closed stop valve 200, the hydraulic pump 100 and the stop valve 200 form an emergency control oil way; the hydraulic pump 100 and the electromagnetic directional valve 700 constitute a conventional control oil path, and the hydraulic pump 100 and the three-position four-way pilot operated directional valve 500 constitute an execution oil path. The conventional control oil way can be selectively communicated with the left or right reversing control port of the three-position four-way hydraulic control reversing valve 500 through the three-position four-way electromagnetic reversing valve 700, so that the three-position four-way hydraulic control reversing valve 500 of the execution oil way is controlled to be positioned at the left or right, the three-position four-way hydraulic control reversing valve 500 of the execution oil way is communicated with the oil port of the working oil cylinder, when the three-position four-way hydraulic control reversing valve 500 is positioned at the left, the working oil cylinder stretches out, when the three-position four-way hydraulic control reversing valve 500 is positioned at the right, the working oil cylinder stretches back, so that the three-position four-way hydraulic control reversing valve 500 controls the stretching out and the retracting of the working oil cylinder of the shaft boring machine, and the emergency control oil way for opening the right passage of the three-position four-way hydraulic control reversing valve is additionally arranged, and the normally closed stop valve 200 is arranged on the emergency control oil way, so that when an underground electric system fails, the normally closed stop valve 200 is opened, the right passage of the three-position four-way hydraulic control reversing valve 500 can be controlled, so that the working oil cylinder is controlled to be controlled, and each execution mechanism of the shaft boring machine is reset to a posture allowing lifting, so that the boring machine is conveniently hoisted to the ground to carry out maintenance.
That is, the utility model can utilize the three-position four-way electromagnetic directional valve 700 to control the three-position four-way hydraulic control directional valve 500 to independently perform the direction change, and can also adopt a remote emergency control oil way to enable the three-position four-way hydraulic control directional valve 500 to perform the direction change simultaneously. The purpose that each operating cylinder can be quickly and simply retracted to reset each executing mechanism under the conditions that each operating cylinder independently extends and retracts and electrical failure occurs during normal operation is achieved.
Specifically, the normally closed stop valve 200 is disposed on the well, and can be opened manually when a fault of the electrical system in the well is found, or the normally closed stop valve 200 can be electrically connected with a controller of the shaft heading machine, and can be opened automatically when the controller acquires the fault of the electrical system in the well.
It can be understood that the three-position four-way electromagnetic directional valve 700 is electrically connected with the controller of the shaft heading machine, and the controller of the shaft heading machine controls the three-position four-way electromagnetic directional valve 700 to switch left and right paths.
In this embodiment, the hydraulic control system further comprises a shuttle valve 600, wherein the shuttle valve 600 is simultaneously positioned on an oil path where the second working oil port of the three-position four-way electromagnetic directional valve 700 is communicated with the right directional control oil port of the three-position four-way hydraulic control directional valve 500, and an oil path where the right directional control oil port of the three-position four-way hydraulic control directional valve 500 is communicated with the oil pump 100,
the left oil inlet of the shuttle valve 600 is communicated with the second working oil port of the three-position four-way electromagnetic reversing valve 700, the right oil inlet of the shuttle valve 600 is communicated with the oil pump 100, and the oil outlet of the shuttle valve 600 is communicated with the right control oil port of the three-position four-way hydraulic reversing valve 500.
It can be understood that the emergency control oil circuit is isolated from the conventional control oil circuit by the shuttle valve 600, and the two-way control three-position four-way hydraulic control reversing valve 500 is switched by the shuttle valve 600, so that the emergency control oil circuit is safe and reliable, the arrangement of pipelines is reduced, and the emergency control oil circuit is more suitable for underground narrow spaces.
In this embodiment, the hydraulic control system further includes a pressure reducing valve 300, where the pressure reducing valve 300 is located on an oil path where a right reversing control oil port of the three-position four-way hydraulic control reversing valve 500 is communicated with the oil pump 100.
The reversing speed of the hydraulic control reversing valve is adjusted by adjusting the pressure of the pressure reducing valve 300 so as to reduce hydraulic impact during reversing and ensure stable resetting of the mechanism during emergency operation.
In this embodiment, the hydraulic control reversing valve further includes a normally open stop valve 800, and a bypass oil path is connected to an oil path that is communicated with the oil pump 100 and the right reversing control oil port of the three-position four-way hydraulic control reversing valve 500, where the bypass oil path is communicated with the oil tank, and the normally open stop valve 800 is disposed on the bypass oil path.
Namely, the emergency control oil way is provided with a normally closed stop valve and a normally open stop valve, so that the abnormal action of the whole machine caused by misoperation of the stop valve is prevented.
In this embodiment, a plurality of working cylinders are provided, and the three-position four-way electromagnetic directional valve 700, the three-position four-way hydraulic control directional valve 500 and the shuttle valve 600 are respectively provided in a plurality and are in one-to-one correspondence with the plurality of working cylinders.
It can be understood that the emergency control oil way of this embodiment is simultaneously communicated with the right-position reversing control port of the three-position four-way hydraulic control reversing valve 500 of each working oil cylinder, so that each three-position four-way hydraulic control reversing valve 500 can be simultaneously controlled to be located at the right position, hydraulic oil simultaneously enters the rod cavity of each working oil cylinder, and pushes each working oil cylinder to be simultaneously recovered, so as to achieve the purpose of resetting all mechanisms by using as few pipelines as possible.
The utility model will be further described by taking the action of a bolt cylinder of a shaft boring machine as an example. The extension principle of the electric control oil cylinder is shown in fig. 1, and the parts shown in fig. 1 are as follows: the hydraulic pump 100, the stop valve 200, the pressure reducing valve 300, the bolt oil cylinder 400, the three-position four-way hydraulic control reversing valve 500, the shuttle valve 600, the three-position four-way electromagnetic reversing valve 700 and the stop valve 800. When the left side of the three-position four-way electromagnetic directional valve 700 is electrified, hydraulic oil is communicated with the left control oil port 501 of the three-position four-way hydraulic directional valve 500 through the first working oil port 701, so that the three-position four-way hydraulic directional valve 500 is positioned at the left position. Meanwhile, high-pressure oil pumped by the hydraulic pump 100 enters the rodless cavity 401 of the bolt cylinder through the oil inlet 503 of the three-position four-way hydraulic control reversing valve 500 to push the bolt cylinder to extend. At this time, normally closed shutoff valve 200 is in a closed state, and normally open shutoff valve 800 is in an open state.
The recovery principle of the electric control oil cylinder is shown in fig. 2, at this time, the right side of the three-position four-way electromagnetic directional valve 700 is powered on, hydraulic oil enters the left-way oil inlet 601 of the shuttle valve 600 through the second working oil port 702 of the three-position four-way electromagnetic directional valve 700, then comes out from the oil outlet 603 of the shuttle valve 600, and is connected with the right-position control oil port 502 of the three-position four-way hydraulic directional valve 500, so that the three-position four-way hydraulic directional valve 500 is located at the right position. Meanwhile, high-pressure oil pumped by the hydraulic pump 100 enters a rod cavity 402 of the bolt cylinder through an oil inlet 503 of the three-position four-way hydraulic control reversing valve 500 to push the bolt cylinder to retract.
The recovery principle of the emergency operation control oil cylinder is shown in fig. 3, at this time, the three-position four-way electromagnetic directional valve 700 is in the neutral position, the normally closed stop valve 200 is opened, the normally open stop valve 800 is closed, and high-pressure oil at the outlet of the oil pump 100 is communicated with the right control oil port 502 of the three-position four-way hydraulic control directional valve 500 through the normally closed stop valve 200, the pressure reducing valve 300, the right oil inlet 602 of the shuttle valve 600 and the oil outlet 603 of the shuttle valve 600, so that the three-position four-way hydraulic control directional valve 500 is in the right position. Meanwhile, high-pressure oil from the hydraulic pump 100 enters the rod cavity 402 of the bolt cylinder through the oil inlet 503 of the three-position four-way hydraulic control reversing valve 500 to push the bolt cylinder to retract.
Similarly, since the pressure reducing valve 300 is simultaneously connected with the shuttle valve corresponding to the cutting arm swinging oil cylinder, the cutting arm telescopic oil cylinder and the main cabin lifting oil cylinder respectively, the rest is also simultaneously positioned at the right position corresponding to the three-position four-way hydraulic control reversing valve corresponding to the cutting arm swinging oil cylinder, the cutting arm telescopic oil cylinder and the main cabin lifting oil cylinder respectively, hydraulic oil simultaneously enters the rod cavities of the cutting arm swinging oil cylinder, the cutting arm telescopic oil cylinder and the main cabin lifting oil cylinder, and the cutting arm swinging oil cylinder, the cutting arm telescopic oil cylinder and the main cabin lifting oil cylinder are pushed to synchronously recover with the bolt oil cylinder, so that the aim of resetting all mechanisms by using as few pipelines as possible is fulfilled.
The reversing speed of the hydraulic control reversing valve is adjusted by adjusting the pressure of the pressure reducing valve 300 so as to reduce hydraulic impact during reversing and ensure stable resetting of the mechanism during emergency operation.
In other embodiments, a plurality of normally closed shut-off valves 200, pressure reducing valves 300 and normally open shut-off valves 800 may be provided, respectively, in one-to-one correspondence with a plurality of working cylinders.
Example 2:
the embodiment provides a shaft boring machine, which comprises a shaft boring machine, wherein the shaft boring machine is provided with a working oil cylinder and the shaft boring machine hydraulic control system of the embodiment 1.
Wherein the shaft boring machine working cylinder includes, but is not limited to, a latch cylinder. The cutting arm swing oil cylinder, the cutting arm telescopic oil cylinder and the main bin lifting oil cylinder.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.
Claims (10)
1. A shaft boring machine hydraulically controlled system, characterized by comprising:
an oil pump (100), an oil tank, a three-position four-way electromagnetic reversing valve (700), a three-position four-way hydraulic control reversing valve (500) and a normally closed stop valve (200),
an oil inlet of the three-position four-way electromagnetic reversing valve (700) is communicated with the oil pump (100), an oil return port of the three-position four-way electromagnetic reversing valve (700) is communicated with an oil tank, a first working oil port of the three-position four-way electromagnetic reversing valve (700) is communicated with a left reversing control oil port of the three-position four-way hydraulic reversing valve (500), a second working oil port of the three-position four-way electromagnetic reversing valve (700) is communicated with a right reversing control oil port of the three-position four-way hydraulic reversing valve (500),
an oil inlet of the three-position four-way hydraulic control reversing valve (500) is communicated with the oil pump (100), an oil return port of the three-position four-way hydraulic control reversing valve (500) is communicated with an oil tank, a first working oil port of the three-position four-way hydraulic control reversing valve (500) is communicated with a rodless cavity of a working oil cylinder of a vertical shaft heading machine, a second working oil port of the three-position four-way hydraulic control reversing valve (500) is communicated with a rod cavity of the working oil cylinder of the vertical shaft heading machine,
the right control oil port of the three-position four-way hydraulic control reversing valve (500) is also communicated with the oil pump (100), the normally closed stop valve (200) is arranged on an oil way of the right reversing control oil port of the three-position four-way hydraulic control reversing valve (500) communicated with the oil pump (100),
the oil pump (100) is communicated with the oil tank,
when the left channel of the three-position four-way electromagnetic directional valve (700) is powered on, the oil pump (100) can pump hydraulic oil of a system hydraulic oil channel into a left-position reversing control oil port of the three-position four-way hydraulic control directional valve (500) through the left channel of the three-position four-way electromagnetic directional valve (700) so as to open the left channel of the three-position four-way hydraulic control directional valve (500), meanwhile, the oil pump (100) pumps the hydraulic oil of the system hydraulic oil channel into a rodless cavity of a working oil cylinder through the left channel of the three-position four-way hydraulic control directional valve (500) so as to enable the working oil cylinder to extend,
when the right path of the three-position four-way electromagnetic directional valve (700) is powered on, the oil pump (100) can pump hydraulic oil of a system hydraulic oil path into a right control oil port of the three-position four-way hydraulic control directional valve (500) through the right path of the three-position four-way electromagnetic directional valve (700) so as to open the right path of the three-position four-way hydraulic control directional valve (500), meanwhile, the oil pump (100) pumps the hydraulic oil of the system hydraulic oil path into a right rod cavity of the working oil cylinder through the right path of the three-position four-way hydraulic control directional valve (500) so as to retract the working oil cylinder,
when the three-position four-way electromagnetic reversing valve (700) is in the neutral position, the normally closed stop valve (200) can be opened manually or automatically, the oil pump (100) can pump the hydraulic oil of the system hydraulic oil way into the right control oil port of the three-position four-way hydraulic control reversing valve (500) so that the right path of the three-position four-way hydraulic control reversing valve (500) is opened, and meanwhile, the oil pump (100) pumps the hydraulic oil of the system hydraulic oil way into the right rod cavity of the working oil cylinder through the right path of the three-position four-way hydraulic control reversing valve (500) so as to retract the working oil cylinder.
2. The hydraulic control system of the shaft boring machine according to claim 1, further comprising a shuttle valve (600), wherein the shuttle valve (600) is simultaneously positioned on an oil path where a second working oil port of the three-position four-way electromagnetic directional valve (700) is communicated with a right directional control oil port of the three-position four-way hydraulic directional valve (500) and an oil path where the right directional control oil port of the three-position four-way hydraulic directional valve (500) is communicated with the oil pump (100),
the left oil inlet of the shuttle valve (600) is communicated with a second working oil port of the three-position four-way electromagnetic reversing valve (700), the right oil inlet of the shuttle valve (600) is communicated with the oil pump (100), and the oil outlet of the shuttle valve (600) is communicated with a right control oil port of the three-position four-way hydraulic control reversing valve (500).
3. The shaft boring machine hydraulic control system according to claim 2, further comprising a pressure reducing valve (300), wherein the pressure reducing valve (300) is located on a oil path where a right reversing control oil port of the three-position four-way hydraulic control reversing valve (500) is communicated with the oil pump (100).
4. The hydraulic control system of the shaft heading machine according to claim 3, further comprising a normally open stop valve (800), wherein a bypass oil path is connected to an oil path for communicating a right reversing control oil port of the three-position four-way hydraulic control reversing valve (500) with the oil pump (100), the bypass oil path is communicated with the oil tank, and the normally open stop valve (800) is arranged on the bypass oil path.
5. The hydraulic control system of a shaft boring machine according to claim 4,
the hydraulic control system is characterized in that a plurality of working cylinders are arranged, and the three-position four-way electromagnetic reversing valve (700), the three-position four-way hydraulic control reversing valve (500) and the shuttle valve (600) are respectively arranged and correspond to the working cylinders one by one.
6. The hydraulic control system of the shaft boring machine according to claim 5, wherein the normally closed stop valve (200), the pressure reducing valve (300) and the normally open stop valve (800) are also provided in plurality and correspond to the plurality of working cylinders one by one.
7. The hydraulic control system of the shaft heading machine according to claim 1, further comprising a pressure reducing valve (300) and a normally open stop valve (800), wherein the pressure reducing valve (300) is positioned on an oil path of a right reversing control oil port of the three-position four-way hydraulic control reversing valve (500) communicated with the oil pump (100), a bypass oil path is connected to an oil path of the right reversing control oil port of the three-position four-way hydraulic control reversing valve (500) communicated with the oil pump (100), the bypass oil path is communicated with the oil tank, and the normally open stop valve (800) is arranged on the bypass oil path.
8. The hydraulic control system of the shaft boring machine according to claim 7, wherein a plurality of working cylinders are provided, and the three-position four-way electromagnetic directional valve (700) and the three-position four-way hydraulic control directional valve (500) are respectively provided in a plurality and are in one-to-one correspondence with the plurality of working cylinders.
9. The hydraulic control system of the shaft boring machine according to claim 8, wherein the normally closed stop valve (200), the pressure reducing valve (300) and the normally open stop valve (800) are also provided in plurality, respectively, and are in one-to-one correspondence with the plurality of working cylinders.
10. A shaft boring machine comprising a working cylinder and a shaft boring machine hydraulic control system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321562407.4U CN219888415U (en) | 2023-06-16 | 2023-06-16 | Hydraulic control system of shaft heading machine and shaft heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321562407.4U CN219888415U (en) | 2023-06-16 | 2023-06-16 | Hydraulic control system of shaft heading machine and shaft heading machine |
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| Publication Number | Publication Date |
|---|---|
| CN219888415U true CN219888415U (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321562407.4U Active CN219888415U (en) | 2023-06-16 | 2023-06-16 | Hydraulic control system of shaft heading machine and shaft heading machine |
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| Country | Link |
|---|---|
| CN (1) | CN219888415U (en) |
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2023
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