Disclosure of Invention
The invention aims to solve the problems and provides a system and a method for automatically cleaning an ejected anchor rod torque nut damping body.
The invention adopts the following technical scheme: a system for automatically cleaning an ejected bolt torque nut damper, comprising: the transmission shaft is provided with a step blind hole in the center, and the step blind hole is connected with a flushing fluid source through a communication hole;
An anchor rod body and a damping body are inserted into the step blind hole; the anchor rod body is sleeved with a torque nut, the torque nut is fastened with the transmission shaft through the connecting sleeve and the locking disc, and the torque nut is arranged on the anchor rod aligning tray.
In some embodiments, the flushing liquid source is sequentially communicated with the pressure valve, the electromagnetic control valve and the flow sensor, the first pressure sensor is connected between the pressure valve and the electromagnetic control valve, the second pressure sensor is connected between the flow sensor and the transmission shaft, and the transmission shaft is fixed with the displacement sensor.
In some embodiments, the stepped blind bore includes a counterbore and a bottom bore, the counterbore diameter being slightly greater than the damper body diameter, the counterbore depth being greater than the sum of the damper body height and the length of the anchor rod body inserted into the blind bore.
In some embodiments, further comprising an anti-misoperation device, the anti-misoperation device comprising:
the judging module is used for identifying and judging whether the anchor box is retracted along the propelling direction, whether the direct distance between the connecting sleeve and the torque nut can be monitored, whether flushing liquid exists in a flushing loop, whether the electromagnetic control valve is successfully opened and whether the ejected damping body is successfully cleaned;
The monitoring module is used for monitoring the distance between the connecting sleeve and the advancing direction of the torque nut, the pressure of the flushing fluid source, the pressure at the transmission shaft and the flushing fluid flow of the flushing loop in real time;
The control module is used for controlling the opening and closing of the electromagnetic control valve and adjusting the set pressure of the pressure valve in the flushing loop;
and the reporting module is used for reporting failure faults of the withdrawal or monitoring the pushing distance of the anchor box, failure of flushing liquid source without flushing liquid and failure of opening the electromagnetic control valve.
A method of automatically cleaning an ejected bolt torque nut damper, comprising:
s101: when the anchor box is retracted along the advancing direction after being screwed up with the torque nut, the advancing direction distance between the connecting sleeve and the torque nut is monitored in real time;
S102: if the propulsion direction distance meets the preset propulsion direction distance condition, opening a flushing loop electromagnetic control valve of the anchor box, and then monitoring the flow of flushing fluid passing through the flushing loop in real time;
S103: and if the flow of the flushing liquid meets the preset value, closing the electromagnetic control valve.
In some embodiments, between steps S101 and S102, further comprising determining whether the distance between the connection sleeve and the advancing direction of the torque nut increases continuously; if the judgment result is that the automatic support flow is not continuously increased, reporting a fault and ending the automatic support flow of the automatic jumbolter.
In some embodiments, the pressure valve is operated at a preset pressure prior to monitoring the flow of rinse liquid in real time; the preset pressure is not more than 0.5Mpa.
In some embodiments, after opening the flushing loop solenoid control valve of the anchor box, further comprising determining whether the solenoid control valve is normally open; if the judgment result is that the electromagnetic control valve fails to be opened, the fault is reported, the automatic supporting flow of the automatic jumbolter is ended, and otherwise, the follow-up steps are carried out.
In some embodiments, before opening the flushing loop electromagnetic control valve of the anchor box, further comprising judging whether the flushing liquid source has liquid; if the judgment result is that no flushing fluid exists, reporting a fault, and ending the automatic supporting process of the automatic jumbolter; if the judgment result is that flushing liquid exists, opening a flushing loop electromagnetic control valve of the anchor box.
In some embodiments, in step S103, the method further includes a step of determining whether the cleaning of the damping body is completed: and if the judging result is incomplete, automatically adjusting the operating pressure of the pressure valve.
Compared with the prior art, the invention has the following beneficial effects:
According to the method, the system and the device for automatically cleaning the ejected anchor rod torque nut damping body, when the anchor box is screwed up and the damping torque nut is retracted along the advancing direction, the distance between the connecting sleeve and the advancing direction of the nut is monitored in real time; when the propulsion direction distance meets the preset propulsion direction distance condition, opening a flushing loop electromagnetic control valve of the anchor box, and further monitoring the flow of flushing fluid passing through the flushing loop in real time; and closing the electromagnetic control valve if the flow of the flushing liquid meets a preset value. The automatic cleaning device can realize automatic cleaning of the ejected damping body, ensure smooth execution of the whole automatic process of anchor rod installation of the switching automatic anchor rod drilling machine, ensure anchor rod installation quality and reduce labor intensity of supporting workers.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The embodiment of the invention is applied to the whole process of automatic anchor rod installation of the switching type automatic anchor rod drilling machine.
Fig. 1 and 2 are a flow chart and logic intent of an anti-misoperation method for an electro-hydraulic jumbolter provided by an embodiment of the present invention. The method comprises the following steps:
step 101, when the anchor box is retracted along the advancing direction after the damping type torque nut is screwed up, the distance between the connecting sleeve and the advancing direction of the nut is monitored in real time;
In the embodiment, the distance between the connecting sleeve and the advancing direction of the nut is monitored by a displacement sensor or an encoder; the initial working position of the preset connecting sleeve is a displacement zero point, and the measured value is greater than or equal to 0; presetting the maximum displacement point of the connecting sleeve at the screw tightening position; the displacement sensor or the encoder measures the increase of the displacement value to indicate that the connecting sleeve advances along the advancing direction, and the displacement sensor or the encoder measures the decrease of the displacement value to indicate that the connecting sleeve retreats along the advancing direction; when the connecting sleeve retreats along the advancing direction, the difference between the displacement maximum value and the current displacement value of the connecting sleeve is the distance between the connecting sleeve and the advancing direction of the nut.
The method also comprises the step of judging whether the distance between the connecting sleeve and the nut in the advancing direction is continuously increased, and specifically comprises the following steps: the continuous increase of the distance between the connecting sleeve and the advancing direction of the nut indicates that the connecting sleeve is normally retracted and the displacement sensor or the encoder has no fault; if the judgment result is that the automatic support flow is not continuously increased, reporting a fault and ending the automatic support flow of the automatic jumbolter.
And 102, opening a flushing loop electromagnetic control valve of the anchor box if the propulsion direction distance meets the preset propulsion direction distance condition, and further monitoring the flushing fluid flow through the flushing loop in real time.
The preset distance in the advancing direction in the embodiment is 1.5 times of the distance between the tail of the anchor rod body and the end face of the connecting sleeve when the nut is screwed, and is related to the length of the thread section at the tail of the anchor rod body; the distance in the pushing direction being greater than the preset distance in the pushing direction indicates that the portion of the anchor rod body inserted into the anchor box has completely separated from the anchor box. If the judgment result is yes, the electromagnetic control valve is opened to enable the flushing loop to be connected, and the flow of flushing liquid is further monitored; in this embodiment, the flow of the rinse liquid is monitored by a flow sensor.
Before the step of monitoring the flow of the flushing liquid in real time, the step of operating the pressure valve according to the preset pressure is further performed: the preset pressure is generally not greater than 0.5Mpa.
Wherein, the step of opening the flushing loop electromagnetic control valve of the anchor box further comprises the step of judging whether the electromagnetic control valve is normally opened or not: in this embodiment, the opening monitoring of the electromagnetic control valve is implemented by a second pressure sensor connected to the second port of the electromagnetic control valve, and a measured pressure value equal to the preset pressure indicates that the electromagnetic control valve is normally opened, and a measured pressure value of 0 indicates that the electromagnetic control valve is failed to be opened; if the judgment result is that the electromagnetic control valve fails to open, the fault is reported, and the automatic supporting flow of the automatic jumbolter is ended.
Before the step of opening the electromagnetic control valve of the flushing loop of the anchor box, the method further comprises the step of judging whether the flushing fluid source has fluid or not: measuring the pressure of the flushing fluid source through the first pressure sensor, wherein a measured pressure value of 0 indicates that the flushing fluid source is free of the flushing fluid source; if the judgment result is that no flushing fluid exists, a fault is reported, and the automatic supporting flow of the automatic jumbolter is ended. The flushing liquid can be clear water, emulsion, hydraulic oil or solution with special proportion.
And 103, closing the electromagnetic control valve if the flow rate of the flushing liquid meets the preset value.
In the embodiment, the preset flushing flow value is 10L/min, and when the measured value of the flow sensor is larger than the preset value, the cleaning of the damping body is completed, and the electromagnetic control valve is closed to stop flushing; if the judgment result is that the damping body is not cleaned, the running pressure of the pressure valve is automatically adjusted to further increase the impact force of the flushing liquid, so that the damping body is cleaned more easily.
In order to realize the embodiment, the invention also provides a system for automatically cleaning the ejected anchor rod torque nut damping body, the principle of which is shown in fig. 3, and the system comprises:
Flushing fluid source 201, pressure valve 202, solenoid control valve 204, first and second pressure sensors 203, flow sensor 205, and anchor box drive shaft 206; the pressure valve 202, the electromagnetic control valve 204, the flow sensor 205 and the transmission shaft 206 are two ports, flushing fluid flows in from a first port of the element and flows out from a second port of the element, and the elements are sequentially connected to form a flushing loop; the first pressure sensor 203 is connected in parallel between the second port of the pressure valve 202 and the first port of the electromagnetic control valve 204, and the second pressure sensor 203 is connected in parallel between the second port of the flow sensor 205 and the first port of the transmission shaft 206; the drive shaft 206 is fixed with the displacement sensor 207. Specifically, in this embodiment, the flushing fluid source 201 is a flushing fluid source that supplies a sufficient flow, and may be a coal mine underground working surface pipe network or a pump; typically, the rinse solution source provides clear water, and in some embodiments the rinse solution source provides one of an emulsion, hydraulic oil, and a specially formulated solution; in this embodiment, the pressure valve 202 is exemplified by an electromagnetic proportional pressure reducing valve connected in series in the flushing circuit, and in some embodiments, the pressure valve may be an electromagnetic proportional pressure reducing overflow valve, an electromagnetic proportional overflow valve, or the like, or may be connected in parallel in the circuit; in this embodiment, the electromagnetic control valve 204 is exemplified by an electromagnetic reversing valve, and in some embodiments, the electromagnetic control valve may also be an electromagnetic ball valve, an electromagnetic reversing valve, etc.; the flow sensor 205 in this embodiment is a flow sensor with real-time measurement and communication functions, and may be an electronic gear flowmeter or a turbine flowmeter in some embodiments; the displacement sensor 207 in this embodiment is a displacement sensor capable of measuring and communicating in real time, and may be one of a pull-wire displacement sensor and a magnetostrictive displacement sensor, or may be an encoder.
Wherein, the center of the transmission shaft 206 is provided with a stepped blind hole 2061, as shown in fig. 4, comprising: counterbore 20611, bottom bore 20612 and communication bore 2062; in this embodiment, there are two communication holes 2062, and the number of communication holes is 3 or 4 in some embodiments.
Specifically, as shown in FIG. 5, counterbore 20611 has a diameter slightly greater than the diameter of damping body 7 and counterbore 20611 has a depth greater than the sum of the height of damping body 7 and the length of rod 1 inserted into blind bore 2061. Further, after the rod body 1 ejects the damping body from the torque nut 4, the damping body 7 cannot roll or overturn and can directly fall into the counter bore 20611 along the axial direction; after the tail end of the rod body 7 is screwed out of the bottom surface of the torque nut 4, the damping body 7 is continuously jacked or slightly pressed, so that the damping body 7 and the counter bore 20611 form slight sealing without forming dense sealing. Further, the flushing liquid enters the cavity formed by the damping body 7 and the counter bore 20611 after passing through the communication hole 2062 and the bottom hole 20612, a part of the flushing liquid flows out through the annular gap, a part of the flushing liquid acts on the lower surface of the damping body to form an impact force, and the impact force is proportional to the operating pressure of the pressure valve 202: when the pressure valve 202 operates at a preset pressure, the damping body 7 floats from the counter bore 20611 to the upper end surface of the connecting sleeve at a very low speed, and in order to ensure successful cleaning of the damping body 7, the operating pressure of the pressure valve 202 is then adjusted to be increased, and the flow rate of flushing fluid correspondingly increases.
The diameter of the damping body 7 is changed along with the specification of the torque nut 4, and correspondingly, the diameter of the counter bore 20611 is serialized along with the specification of the torque nut 4; further, drive shafts 206 are serialized with the serialization of the diameters of counterbore 20611, specifically to tighten one gauge torque nut 4, with a corresponding set of drive shafts 206.
In order to implement an embodiment, the present invention further proposes an anti-misoperation device for an electrohydraulic control jumbolter, as shown in fig. 6, including:
The judging module 301 is configured to identify and judge whether the anchor box is retracted along the pushing direction, whether the direct distance between the connecting sleeve and the nut can be monitored, whether the flushing loop has flushing liquid, whether the electromagnetic control valve is successfully opened, and whether the ejected damping body is successfully cleaned;
the monitoring module 302 is used for monitoring the distance between the connecting sleeve and the advancing direction of the nut, the pressure of the flushing fluid source, the pressure at the transmission shaft and the flushing fluid flow of the flushing loop in real time;
a control module 303 for controlling the opening and closing of the solenoid control valve and regulating the set pressure of the pressure valve in the flushing loop;
And the reporting module 304 is used for reporting failure faults of the anchor box in retracting or monitoring the advancing distance, failure of the flushing fluid source in flushing fluid and failure of the electromagnetic control valve in opening.
In the description of this specification, the terms "some embodiments," "examples," "illustrative examples," or "some examples," etc. describe 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 the invention. In this specification, schematic representations of the terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In the description of this specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a number" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present specification, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "center", "radial", "axial", "advancing direction", "length", "thickness", "advancing", "retracting", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.