Top drive lifting ring state conversion signal acquisition circuit and detection system

Abstract

The utility model relates to the technical field of top drive lifting ring inclination detection, and discloses a top drive lifting ring state conversion signal acquisition circuit and a detection system, the top drive lifting ring state conversion signal acquisition circuit is fixedly arranged on a rod body of a top drive lifting ring, and comprises an acquisition module, an output module and a transmitting encoder, the collecting module is connected with the transmitting encoder through the output module, the collecting module comprises a first switch unit and a second switch unit, when the top drive hanging ring is in a safe state, the first switch unit is closed, and when the top drive hanging ring is in a dangerous state, the second switch unit is closed; the output module comprises a state conversion signal output sub-module, a trigger signal sending sub-module, a positive power supply end + VCC and a negative power supply end-VCC. Whether the top drive hanging ring is in a safe state or not can be detected in time, and the safety of well drilling is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of top drive lifting ring inclination detection, in particular to a top drive lifting ring state change signal acquisition circuit and a detection system. Background Art

[0002] The top drive is a crucial piece of equipment in modern drilling operations. When drill pipe needs to be added or removed, the top drive requires a top drive lifting ring to connect with other equipment. Traditionally, this method involves manually operating the top drive lifting ring, visually observing its relative position with the other equipment, and then attempting to adjust its relative position, completing the drill pipe connection step by step. This results in extremely low work efficiency, increases labor costs due to the need for dedicated personnel, and is also detrimental to operator safety.

[0003] Therefore, how to quickly detect whether the top drive lifting ring is in a safe position is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The utility model provides a top drive lifting ring state change signal acquisition circuit and a detection system, so as to realize the rapid detection of the top drive lifting ring state change.

[0005] The utility model is achieved through the following technical solutions:

[0006] A top drive lifting ring state change signal acquisition circuit, the top drive lifting ring state change signal acquisition circuit is fixedly arranged on the rod body of the top drive lifting ring,

[0007] It includes an acquisition module, an output module and a transmission encoder, wherein the acquisition module is connected to the transmission encoder through the output module,

[0008] The acquisition module includes a first switch unit and a second switch unit. When the top drive lifting ring is in a safe state, the first switch unit is closed and the second switch unit is opened; when the top drive lifting ring is in a dangerous state, the second switch unit is closed and the first switch unit is opened.

[0009] The output module includes a state change signal output submodule, a trigger signal sending submodule, a positive power supply terminal +VCC and a negative power supply terminal -VCC. The second switch unit is connected to the trigger signal sending submodule through the state change signal output submodule. The positive power supply terminal +VCC is respectively connected to one end of the first switch unit, the trigger signal sending submodule and one input end of the transmitting encoder. The negative power supply terminal -VCC is respectively connected to the state change signal output submodule, the trigger signal sending submodule and the other input end of the transmitting encoder. The other end of the first switch unit is connected to the state change signal output submodule. The trigger signal sending submodule is also connected to the control end of the transmitting encoder.

[0010] As an optimization, the state change signal output submodule includes a resistor R * , a polarized capacitor C1, a polarized capacitor C2, a resistor R1, a resistor R2, a resistor R3, a diode D1, a capacitor C3, wherein one end of the second switch unit is connected in series with the resistor R * The second switching unit is connected to the positive electrode of the polarized capacitor C1, the negative electrode of the polarized capacitor C1 is connected to the negative power supply terminal -VCC through the polarized capacitor C2 in series, the negative electrode of the polarized capacitor C1 is connected to the positive electrode of the polarized capacitor C2, and the negative electrode of the polarized capacitor C1 is connected to the trigger signal sending submodule through the diode D1 and the resistor R3 connected in series in sequence, and the two ends of the resistor R1 are respectively connected to the positive electrode of the diode D1 and the negative power supply terminal -VCC, and the two ends of the resistor R2 are respectively connected to the negative electrode of the diode D1 and the negative power supply terminal -VCC, one end of the capacitor C3 is connected to the end of the resistor R3 away from the diode D1, and the other end of the capacitor C3 is connected to the negative power supply terminal -VCC, and the negative power supply terminal -VCC is connected to the negative input terminal of the transmitting encoder as the negative transmitting terminal of the output module for outputting the transmitting signal, and the other end of the second switching unit is connected to the common connection end of the resistor R2 and the resistor R3.

[0011] As an optimization, the trigger signal sending submodule includes a resistor R4, a transistor Q1 and an optocoupler U1. One end of the first switch unit is connected to pin 1 of the optocoupler U1 by connecting the resistor R4 in series, and the end of the resistor R4 away from the optocoupler U1 is connected to the positive power supply terminal +VCC. At the same time, the positive power supply terminal +VCC is connected to the positive input terminal of the transmitting encoder as the positive transmitting terminal of the output module for outputting the transmitting signal. The other end of the first switch unit is connected to the positive input terminal of the transmitting encoder by connecting the resistor R4 in series. *Connected to the positive electrode of the polarized capacitor C1, pin 2 of the optocoupler U1 is connected to the collector of the transistor Q1, the common connection end of the resistor R3 and the capacitor C3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is connected to the negative power supply terminal -VCC, and pins 3 and 4 of the optocoupler U1 are respectively connected to the control end of the transmitting encoder as the output end of the trigger control signal.

[0012] As an optimization, the models of the transmitting encoder include HT12D, TLN101A, DL9445, and PT2262S.

[0013] As an optimization, it also includes a shell fixedly mounted on the top drive lifting ring, a PCB board is fixedly connected to the shell, the acquisition module and the output module are arranged on the PCB board, the transmitting encoder is fixedly arranged in the shell or the transmitting encoder is fixedly arranged outside the shell, and also includes a magnet, the magnet is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the shell through a pin shaft.

[0014] As an optimization, the first switch unit includes a reed switch G1 for detecting that the top drive lifting ring is in a neutral state or a safe tilted state, and the second switch unit includes a reed switch G2 for detecting that the top drive lifting ring is in a forward tilted state exceeding a tilt threshold and a reed switch G3 for detecting that the top drive lifting ring is in a backward tilted state exceeding a tilt threshold, and the reed switches G1, G2, and G3 are all two-pin reed switches. When the top drive lifting ring is in a neutral state, the magnet is located directly above the reed switch G1, and on the plane where the top drive lifting ring swings when it changes from a normal state to a tilted state, the reed switch G2 and the reed switch G3 are respectively located on both sides of the reed switch G1.

[0015] As an optimization, the first switch unit and the second switch unit are both a normally open and normally closed 3-pin reed switch Y1, the reed switch Y1 includes pin 1, pin 2 and pin 3, wherein the pin 1 and the resistor R * One end of the resistor R2 is connected to the positive power supply terminal +VCC, the pin 3 is connected to the common connection end of the resistor R2 and the resistor R3, and the pin 1 is connected to the moving contact, the pin 2 is connected to the normally open contact, and the pin 3 is connected to the normally closed contact.

[0016] As an optimization, the connecting rod is a lead bar.

[0017] The utility model also discloses a top drive lifting ring tilt state system, comprising the aforementioned top drive lifting ring tilt detection circuit and a control terminal, wherein the control terminal comprises a receiving decoder, a latch, a controller, an execution terminal and a power supply module, wherein:

[0018] The input end of the receiving decoder is connected to the output end of the transmitting encoder, and is used to receive the encoded transmitting signal sent by the transmitting encoder and decode the encoded transmitting signal to form a decoded signal;

[0019] The input end of the latch is connected to the output end of the receiving decoder, and the latch is triggered to output a latch signal according to the decoding signal;

[0020] The input end of the controller is connected to the latch, and is used to control the execution terminal to perform corresponding protection measures according to the latch signal output by the latch.

[0021] As an optimization, the controller includes one or more of a 51 single-chip microcomputer, an ARM microcontroller, an AVR microcontroller, an MSP single-chip microcomputer, or a PIC single-chip microcomputer.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0023] The utility model can timely detect whether the state of the top drive lifting ring has changed, thereby detecting whether the top drive lifting ring is in a safe state, thereby ensuring the safety of drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0025] Figure 1 This is one of the circuit connection diagrams of a top drive lifting ring tilt collection circuit described in the utility model;

[0026] Figure 2 This is another circuit connection diagram of a top drive lifting ring tilt collection circuit described in the utility model;

[0027] Figure 3 Schematic diagram of the top drive lifting ring changing from a safe state to one of the dangerous states when the reed switch is a 2-pin reed switch;

[0028] Figure 4 Schematic diagram of the top drive lifting ring changing from a safe state to another dangerous state when the reed switch is a 2-pin reed switch;

[0029] Figure 5 Schematic diagram of the top drive lifting ring changing from a safe state to one of the dangerous states when the reed switch is a 3-pin reed switch;

[0030] Figure 6 Schematic diagram of the top drive lifting ring changing from a safe state to another dangerous state when the reed switch is a 3-pin reed switch;

[0031] Figure 7 This is a schematic diagram of one of the gate circuits of a latch;

[0032] Figure 8 This is another gate circuit diagram of a latch;

[0033] Figure 9 This is a module connection diagram of the detection system described in the present utility model.

[0034] Markings and corresponding parts names in the accompanying drawings:

[0035] 1-Top drive lifting ring, 2-Connecting rod, 3-Magnet. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0037] This embodiment 1 provides a top drive lifting ring state change signal acquisition circuit, which is fixedly arranged on the rod body of the top drive lifting ring and includes an acquisition module, an output module and a transmitting encoder. The acquisition module is connected to the transmitting encoder through the output module, wherein:

[0038] The acquisition module includes a first switch unit and a second switch unit. When the top drive lifting ring is in a safe state, the first switch unit is closed and the second switch unit is opened; when the top drive lifting ring is in a dangerous state, the second switch unit is closed and the first switch unit is opened.

[0039] The output module includes a state change signal output submodule, a trigger signal sending submodule, a positive power supply terminal +VCC and a negative power supply terminal -VCC. The second switch unit is connected to the trigger signal sending submodule through the state change signal output submodule. The positive power supply terminal +VCC is respectively connected to one end of the first switch unit, the trigger signal sending submodule and one input end of the transmitting encoder. The negative power supply terminal -VCC is respectively connected to the state change signal output submodule, the trigger signal sending submodule and the other input end of the transmitting encoder. The other end of the first switch unit is connected to the state change signal output submodule. The trigger signal sending submodule is also connected to the control end of the transmitting encoder.

[0040] That is, the transmitting encoder is connected to the positive transmitting end, the negative transmitting end and the output end of the trigger control signal of the output module respectively.

[0041] In this technical solution, the first and second switch units are used to detect the actual position of the top drive link. The state change signal output submodule is configured to output a high current for a certain period of time after the top drive link changes state, driving the trigger signal sending submodule to output a trigger signal. After a certain period of time, the output current decreases. After receiving the high current, the trigger signal sending submodule sends a trigger signal to the transmitting encoder. The transmitting encoder transmits the encoded transmitting signal after receiving the trigger signal. The transmitting encoder continuously collects and encodes the transmitting signal through the positive transmitting terminal and the negative transmitting terminal (the transmitting signal is provided by the positive power supply terminal +VCC and the negative power supply terminal -VCC). After receiving the trigger signal, it transmits the encoded transmitting signal. Here, the trigger signal sending submodule acts as a remote control switch. The high current received by the trigger signal sending submodule is equivalent to applying a force to the remote control switch to press the remote control switch. After a certain period of time, because the top drive link remains in the same state, the current output by the state change signal output submodule decreases, and the trigger signal sending submodule can no longer send the trigger signal. At this time, the trigger signal sending submodule stops sending the trigger signal, thus enabling the trigger signal sending submodule to achieve a power-saving triggering function. For example, when the top drive lifting ring changes from a safe state to a dangerous state, the first switch unit is disconnected and the second switch unit is closed; when the top drive lifting ring changes from a dangerous state to a safe state, the first switch unit is closed and the second switch unit is disconnected; and the trigger signal sending submodule outputs a large current to enable the trigger signal sending submodule to send a trigger signal during a period of time when the first switch unit is disconnected and the second switch unit is closed, or during a period of time when the first switch unit is closed and the second switch unit is disconnected.

[0042] As for the "certain time", "larger current" and "smaller current" here, they can be determined according to the size of the electronic components in the state change signal output submodule and the trigger signal sending submodule. The subsequent content will specifically introduce the working process of the state change signal output submodule and the trigger signal sending submodule.

[0043] The state change information output submodule includes a resistor R * , a polarized capacitor C1, a polarized capacitor C2, a resistor R1, a resistor R2, a resistor R3, a diode D1, a capacitor C3, wherein one end of the second switch unit is connected in series with the resistor R *The second switching unit is connected to the positive electrode of the polarized capacitor C1, the negative electrode of the polarized capacitor C1 is connected to the negative power supply terminal -VCC through the polarized capacitor C2 in series, the negative electrode of the polarized capacitor C1 is connected to the positive electrode of the polarized capacitor C2, and the negative electrode of the polarized capacitor C1 is connected to the trigger signal sending submodule through the diode D1 and the resistor R3 connected in series in sequence, and the two ends of the resistor R1 are respectively connected to the positive electrode of the diode D1 and the negative power supply terminal -VCC, and the two ends of the resistor R2 are respectively connected to the negative electrode of the diode D1 and the negative power supply terminal -VCC, one end of the capacitor C3 is connected to the end of the resistor R3 away from the diode D1, and the other end of the capacitor C3 is connected to the negative power supply terminal -VCC, and the negative power supply terminal -VCC is connected to the negative input terminal of the transmitting encoder as the negative transmitting terminal of the output module for outputting the transmitting signal, and the other end of the second switching unit is connected to the common connection end of the resistor R2 and the resistor R3.

[0044] like Figure 1 As shown, the first switch unit includes a reed switch G1 for detecting whether the top drive lifting link is in a neutral state or a safe tilt state, and the second switch unit includes a reed switch G2 for detecting whether the top drive lifting link is in a forward tilt state exceeding a tilt threshold, and a reed switch G3 for detecting whether the top drive lifting link is in a backward tilt state exceeding a tilt threshold. The reed switches G1, G2, and G3 are all two-pin reed switches. The reed switches G2 and G3 are arranged in parallel.

[0045] When the top drive lifting ring changes from a dangerous state to a safe state, the reed switch G1 is closed, the reed switches G2 and G3 are disconnected, and the current of the positive power supply terminal +VCC passes through the closed reed switch G1 to the current limiting resistor R * At this time, the polarized capacitor C1 is charged. When the polarized capacitor C1 is charged, the polarized capacitor C2 is also charged. While the polarized capacitor C2 is charging, it is discharged through the resistor R1. The resistance value of the resistor R1 is set so that the discharge speed of the polarized capacitor C2 is lower than the charging speed, thereby causing the voltage of the positive electrode of the polarized capacitor C2 to gradually increase. At this time, the positive electrode voltage of the diode D1 gradually increases, thereby causing the diode D1 to be turned on. In the process of the positive electrode voltage of the polarized capacitor C2 gradually increasing, the current passing through the diode D1 also gradually increases, thereby causing the current output through the current limiting resistor R3 to gradually increase, and finally output a "larger current" through the current limiting resistor R3. Set the current limiting resistor R * This can prevent the reed switch from suddenly closing when the state of the top drive lifting ring changes, causing the polarized capacitor C1 to charge and discharge too quickly and cause damage to the reed switch.

[0046] The current limiting resistor R3 is provided to prevent the state change signal output submodule from outputting too much current, thereby preventing the subsequent trigger signal sending submodule from being damaged.

[0047] When the top drive hoist ring remains in a safe state, the polarized capacitor C1 is continuously charged. After the polarized capacitor C1 is fully charged, the positive power supply terminal +VCC no longer supplies power to the polarized capacitor C1. At this point, the polarized capacitor C2 also stops charging. The current at the positive terminal of the polarized capacitor C2 flows through the resistor R1 to the negative power supply terminal -VCC, thereby gradually discharging the polarized capacitor C2. As the voltage of the polarized capacitor C2 decreases, after a certain period of time, the diode D1 becomes non-conductive. Ultimately, the output voltage of the state change signal output submodule is less than the trigger current of the trigger signal sending submodule (the trigger current can be the control current used by the trigger signal sending submodule to send the trigger signal), until the state change signal output submodule stops outputting current. In other words, when the dangerous state transitions to the normal state, the output current of the state change signal output submodule gradually increases to a certain maximum value and then decreases from the maximum value to zero. Here, the maximum value and the rate of current increase are related to the size of the electronic components in the circuit. This is not the key point of the present invention and will not be further described here.

[0048] When the top drive lifting ring changes from a safe state to a dangerous state, the reed switch G1 is disconnected, and one of the reed switches G2 and G3 is closed. At this time, the current of the positive electrode of the fully charged polarized capacitor C1 passes through the current limiting resistor R * The closed reed switch G2 or G3 flows to the common connection end of the resistors R2 and R3, wherein part of the current flows to the negative power supply terminal -VCC through the resistor R2, and the other part of the current is sent to the trigger signal sending submodule as the output current of the state change signal output submodule through the current limiting resistor R3, so that the trigger signal sending submodule outputs a trigger signal. The output current at this time is the "larger current".

[0049] When the top drive lifting ring remains in a dangerous state, the polarized capacitor C1 continues to discharge, and the output current of the state change signal output submodule gradually decreases, and eventually becomes less than the trigger current of the trigger signal sending submodule, until the state change signal output submodule stops outputting current.

[0050] The trigger switch submodule includes a resistor R4, a transistor Q1 and an optocoupler U1. One end of the first switch unit is connected to pin 1 of the optocoupler U1 by connecting the resistor R4 in series, and the end of the resistor R4 away from the optocoupler U1 is connected to the positive power supply terminal +VCC. At the same time, the positive power supply terminal +VCC is connected to the positive transmitting terminal of the output module for outputting the transmitting signal. The other end of the first switch unit is connected to the resistor R4 in series. *The pin 2 of the optocoupler U1 is connected to the positive electrode of the polarized capacitor C1, the common connection end of the resistor R3 and the capacitor C3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is connected to the negative power supply terminal -VCC, and the pins 3 and 4 of the optocoupler U1 serve as the output ends of the trigger control signal respectively.

[0051] Specifically, the two ends of the reed switch G1 are connected to one end of the resistor R4 and the resistor R * One end of the parallel link of the reed switch G2 and the reed switch G3 is connected to the common connection end of the resistor R2 and the resistor R3, and the other end of the parallel link of the reed switch G2 and the reed switch G3 is connected to the common connection end of the resistor R2 and the resistor R3. * One end of .

[0052] When the state change signal output submodule outputs a "high current," transistor Q1 turns on, causing the light-emitting diode in the optocoupler to emit light, which in turn causes the phototransistor in the optocoupler to output a trigger signal to the transmitting encoder. The "high current" here refers to the trigger current of the trigger signal sending submodule, which is the current that can turn on transistor Q1.

[0053] At the same time, by setting the sizes of the electronic components of the two sub-modules, the "certain time" can be made between 1 and 2 seconds, that is, the conduction time of the transistor Q1 is made between 1 and 2 seconds.

[0054] In some embodiments, it also includes a shell fixedly mounted on the top drive lifting ring, a PCB board is fixedly connected to the inside of the shell, the acquisition module and the output module are arranged on the PCB board, the transmitting encoder is fixedly arranged in the shell or the transmitting encoder is fixedly arranged outside the shell, and also includes a magnet, the magnet is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the shell through a pin. In this embodiment, the magnet is a magnet with strong magnetic properties. More specifically, in order to ensure that the connecting rod is always in a vertical state, the connecting rod is a lead bar. The high density of lead can reduce the possibility of the connecting rod tilting as the top drive lifting ring swings.

[0055] That is, the lead bar is rotatably connected to the shell through a pin. The shell will tilt as the top drive lifting ring tilts (sways), while the lead bar remains in a vertical state.

[0056] As the top drive eye tilts ( Figure 3 、 4 During the process (which can be regarded as swinging left and right with a certain point as the center of a circle), the lead bar is always in a vertical state, that is, as the top drive lifting ring tilts, the relative positions of the magnet and the first switch unit and the second switch unit will change. Figure 3 、 4In the figure, the reed switches G1, G2, and G3 are inside the shell. In order to facilitate the viewing of the phase positions of the reed switches G1, G2, and G3 and the magnet, the projections of the reed switches G1, G2, and G3 on the shell surface are drawn. Figure 5 、 6 The same applies to the middle reed switch Y1.

[0057] More specifically, when the first switch unit is the reed switch G1, and the second switch unit is the reed switch G2 and the reed switch G3, when the top drive lifting ring is in the neutral state, the magnet is located directly above the reed switch G1, and on the plane when the top drive lifting ring swings from the normal state to the tilted state, the reed switch G2 and the reed switch G3 are respectively located on both sides of the reed switch G1.

[0058] It should be noted that if Figure 3 、 4 As shown in the figure, when the top drive lifting ring 1 is in the neutral state (vertical state) and within the preset tilt angle, the magnetic field of the magnet only acts on the reed switch G1. At this time, the reed switch G1 is closed, and the reed switches G2 and G3 are disconnected. The top drive lifting ring is in a safe state. When the top drive lifting ring is in Figure 3 、 4 When the top drive ring swings in the direction shown (the top drive ring can only swing in one plane, that is, Figure 3 、 4 The figure shown can only swing left and right, but not vertically. Figure 3 、 4 The magnetic field of the magnet only acts on the reed switch G2 or G3, and the top drive ring is in a dangerous state. Figure 3 、 4 In the accompanying drawings shown, the top drive lifting ring can only swing left and right. Therefore, the reed switches G2 and G3 are located on the left and right sides of the reed switch G1. The specific settings of the reed switches G2 and G3 are related to the preset tilt angle and the magnetism of the magnet. The preset tilt angle and the magnetism of the magnet can be set according to actual operation requirements. This is not the utility model point of the present invention and will not be repeated here.

[0059] When the top drive lifting ring is in a safe state, the reed switch G1 is in the magnetic field generated by the magnet and the reed switches G2 / G3 are not in the magnetic field generated by the magnet, so that the magnet controls the reed switch G1 to close; when the top drive lifting ring is in a dangerous state, the reed switches G2 / G3 are closed and in the magnetic field generated by the magnet and the reed switch G1 is not in the magnetic field generated by the magnet, so that the magnet controls the reed switches G2 / G3 to close.

[0060] The specific installation positions of the magnet and the lead bar are set according to the actual situation, as long as the lifting ring is in a safe state, the magnetic field generated by the magnet only acts on the reed switch G1; the lifting ring is in a set dangerous state, the magnetic field generated by the magnet only acts on the reed switch G2 or G3, and the lead bar is parallel to the swing plane of the top drive lifting ring.

[0061] Here, the swing surface is Figure 3 、 4 The plane where the top drive lifting ring in 5 and 6 swings left and right is the xy plane, and the shell also swings on the xy plane as the top drive lifting ring swings.

[0062] Example 2:

[0063] Different from Example 1, Figure 2 As shown, the first switch unit and the second switch unit are a normally open normally closed 3-pin reed switch Y1, the reed switch Y1 includes pin 1, pin 2 and pin 3, wherein the pin 1 and the resistor R * One end of the reed switch Y1 is connected, the pin 2 is connected to the positive power supply terminal +VCC, the pin 3 is connected to the common connection end of the resistor R2 and the resistor R3, and the pin 1 is connected to the moving contact, the pin 2 is connected to the normally open contact, and the pin 3 is connected to the normally closed contact. The first switch unit is equivalent to pin 1 and pin 2 of the reed switch Y1, and the second switch unit is equivalent to pin 1 and pin 3 of the reed switch Y1. Pin 3 is the normally closed end, that is, when there is no external force, pin 1 and pin 3 are in contact, and pin 1 and pin 2 are not in contact, that is, when the top drive lifting ring is in a dangerous state, the magnetic field of the magnet does not act on the reed switch Y1. At this time, pin 2 of the reed switch Y1 is located directly below the magnet. In other words, if Figure 5 、 6 As shown, when the top drive lifting ring is in a safe state, pin 1 of reed switch Y1 contacts pin 2 of Y1 under the action of a magnet, disconnecting pin 1 from pin 3 of Y1. When the top drive lifting ring changes from a safe state to a dangerous state, the magnet no longer acts on pin 2, causing pin 1 to contact pin 3. The 2-pin reed switch and the normally open / normally closed 3-pin reed switch Y1 can use any commercially available reed switch, so they will not be detailed here.

[0064] It should be noted that the system identifies a safe state when the top drive link is in a vertical position or tilted within a safe range. A dangerous state occurs when the top drive link tilt angle exceeds the preset safety threshold, especially when it approaches or reaches an angle that could impact the second-floor platform or other equipment. The system identifies this as a dangerous state and triggers appropriate safety measures, such as issuing a warning or automatically activating the brake system to prevent accidents.

[0065] In summary, in Example 1 and Example 2, as long as the state of the top drive lifting ring changes, the output module will output a trigger signal for a certain period of time to trigger the transmitting encoder to transmit a signal. After the state of the top drive lifting ring remains unchanged, the output module no longer outputs a trigger signal. Through the state trigger mode, the entire acquisition circuit achieves the function of power saving triggering.

[0066] Embodiment 3 further discloses a top drive lifting ring state detection system, comprising a top drive lifting ring state change signal acquisition circuit and a control terminal according to embodiment 1 or 2, wherein the control terminal comprises a receiving decoder, a latch, a controller, an execution terminal and a power supply module, wherein:

[0067] The input end of the receiving decoder is connected to the output end of the transmitting encoder, and is used to receive the encoded transmitting signal sent by the transmitting encoder and decode the encoded transmitting signal to form a decoded signal;

[0068] When the top drive lifting ring undergoes different state changes, the signal emitted by the transmitting encoder is the same (both are provided by the positive power supply terminal).

[0069] The input end of the latch is connected to the output end of the receiving decoder, and the latch is triggered to output a latch signal according to the decoding signal;

[0070] The input end of the controller is connected to the latch and is used to control whether the execution terminal performs corresponding protection measures according to the latch signal output by the latch.

[0071] In this embodiment, the latch outputs only two latch signals: one latch signal causes the controller to control the execution terminal to execute the corresponding protection measure, and the other latch signal causes the controller to not control the execution terminal to execute the corresponding protection measure. For example, signal A and signal B: signal A causes the controller to control the execution terminal to execute the corresponding protection measure, while signal B causes the controller to not control the execution terminal to execute the corresponding protection measure.

[0072] When the latch continuously outputs the A signal, if the receiving decoder sends a decoding signal to the latch, the latch switches to continuously outputting the B signal; when the latch continuously outputs the B signal, if the receiving decoder sends a decoding signal to the latch, the latch switches to continuously outputting the A signal.

[0073] The specific structure of the latch can be as follows Figure 7 、 8 shown.

[0074] The system includes NAND gates A1 and A2, OR gate A3, and NAND gate A4. One input of NAND gate A1 and the input of the NAND gate are connected to the output of the decoding receiver. The output of NAND gate A1 is connected to both inputs of NAND gate A2. The output of NAND gate A2 is connected to one input of the OR gate. The other input of the OR gate is connected to the output of the NAND gate. The output of the OR gate is connected to the other input of NAND gate A1. The output of NAND gate A1 is also connected to the controller. Of course, NAND gate A2 can also be replaced with OR gate A5.

[0075] That is, in fact, the latch may also be an existing model, such as a JK latch or a D latch.

[0076] The corresponding protection measures include warning or braking, that is, the execution terminal can be one or more of the alarm or braking system.

[0077] The controller includes one or more of a 51 single-chip microcomputer, an ARM microcontroller, an AVR microcontroller, an MSP single-chip microcomputer, or a PIC single-chip microcomputer.

[0078] That is, the structure of the detection system is as follows Figure 9 As shown, specifically:

[0079] The acquisition module is electrically connected to the transmitting encoder through the output module, the transmitting encoder is communicatively connected to the receiving decoder, and the receiving encoder is electrically connected to the execution terminal through the latch and the controller. The power module supplies power to the controller.

[0080] When the lifting ring is in the neutral position, forward tilt or backward tilt state, the power-saving triggering mode "circuit" and the angle sampling "probe" cooperate with each other to complete the simulated "working condition" of the remote control "button" and automatically output "emission".

[0081] The wireless receiver in the host machine works in the "self-locking" mode, so that the two lifting ring states of neutral safety and tipping danger can be automatically detected and identified by logical judgment.

[0082] It should be noted that the resistors, capacitors, diodes, transistors, optocouplers, controllers, transmitter encoders, and receiver decoders used in this invention all use existing models and are not described in detail here. For example, the transmitter encoder can use the 838B-MBF-J, and the receiver decoder can use the SC2272-M4 and MS8416T.

[0083] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A top drive lifting ring state change signal acquisition circuit, wherein the top drive lifting ring state change signal acquisition circuit is fixedly arranged on the rod body of the top drive lifting ring, characterized in that: It includes an acquisition module, an output module and a transmission encoder, wherein the acquisition module is connected to the transmission encoder through the output module, The acquisition module includes a first switch unit and a second switch unit. When the top drive lifting ring is in a safe state, the first switch unit is closed and the second switch unit is opened; when the top drive lifting ring is in a dangerous state, the second switch unit is closed and the first switch unit is opened. The output module includes a state change signal output submodule, a trigger signal sending submodule, a positive power supply terminal +VCC and a negative power supply terminal -VCC. The second switch unit is connected to the trigger signal sending submodule through the state change signal output submodule. The positive power supply terminal +VCC is respectively connected to one end of the first switch unit, the trigger signal sending submodule and one input end of the transmitting encoder. The negative power supply terminal -VCC is respectively connected to the state change signal output submodule, the trigger signal sending submodule and the other input end of the transmitting encoder. The other end of the first switch unit is connected to the state change signal output submodule. The trigger signal sending submodule is also connected to the control end of the transmitting encoder.

2. A top drive lifting ring state change signal acquisition circuit according to claim 1, characterized in that: The state change signal output submodule includes a resistor R * , a polarized capacitor C1, a polarized capacitor C2, a resistor R1, a resistor R2, a resistor R3, a diode D1, a capacitor C3, wherein one end of the second switch unit is connected in series with the resistor R * The second switching unit is connected to the positive electrode of the polarized capacitor C1, the negative electrode of the polarized capacitor C1 is connected to the negative power supply terminal -VCC through the polarized capacitor C2 in series, the negative electrode of the polarized capacitor C1 is connected to the positive electrode of the polarized capacitor C2, and the negative electrode of the polarized capacitor C1 is connected to the trigger signal sending submodule through the diode D1 and the resistor R3 connected in series in sequence, and the two ends of the resistor R1 are respectively connected to the positive electrode of the diode D1 and the negative power supply terminal -VCC, and the two ends of the resistor R2 are respectively connected to the negative electrode of the diode D1 and the negative power supply terminal -VCC, one end of the capacitor C3 is connected to the end of the resistor R3 away from the diode D1, and the other end of the capacitor C3 is connected to the negative power supply terminal -VCC, and the negative power supply terminal -VCC is connected to the negative input terminal of the transmitting encoder as the negative transmitting terminal of the output module for outputting the transmitting signal, and the other end of the second switching unit is connected to the common connection end of the resistor R2 and the resistor R3.

3. A top drive lifting ring state change signal acquisition circuit according to claim 2, characterized in that: The trigger signal sending submodule includes a resistor R4, a transistor Q1 and an optocoupler U1. One end of the first switch unit is connected to pin 1 of the optocoupler U1 by connecting the resistor R4 in series, and the end of the resistor R4 away from the optocoupler U1 is connected to the positive power supply terminal +VCC. At the same time, the positive power supply terminal +VCC is connected to the positive input terminal of the transmitting encoder as the positive transmitting terminal of the output module for outputting the transmitting signal. The other end of the first switch unit is connected to the positive input terminal of the transmitting encoder by connecting the resistor R4 in series. * Connected to the positive electrode of the polarized capacitor C1, pin 2 of the optocoupler U1 is connected to the collector of the transistor Q1, the common connection end of the resistor R3 and the capacitor C3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is connected to the negative power supply terminal -VCC, and pins 3 and 4 of the optocoupler U1 are respectively connected to the control end of the transmitting encoder as the output end of the trigger control signal.

4. A top drive lifting ring state change signal acquisition circuit according to claim 3, characterized in that: It also includes a shell fixedly mounted on the top drive lifting ring, a PCB board fixedly connected to the shell, the acquisition module and the output module are arranged on the PCB board, the transmitting encoder is fixedly arranged in the shell or the transmitting encoder is fixedly arranged outside the shell, and also includes a magnet, the magnet is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the shell through a pin.

5. A top drive lifting ring state change signal acquisition circuit according to claim 4, characterized in that: The first switch unit includes a reed switch G1 for detecting whether the top drive lifting ring is in a neutral state or a safe tilted state, and the second switch unit includes a reed switch G2 for detecting whether the top drive lifting ring is in a forward tilted state exceeding a tilt threshold and a reed switch G3 for detecting whether the top drive lifting ring is in a backward tilted state exceeding a tilt threshold. The reed switches G1, G2, and G3 are all two-pin reed switches. When the top drive lifting ring is in a neutral state, the magnet is located directly above the reed switch G1, and the reed switch G2 and the reed switch G3 are respectively located on both sides of the reed switch G1 on the plane where the top drive lifting ring swings when it changes from a normal state to a tilted state.

6. A top drive lifting ring state change signal acquisition circuit according to claim 4, characterized in that: The first switch unit and the second switch unit are both a normally open and normally closed 3-pin reed switch Y1, and the reed switch Y1 includes pin 1, pin 2 and pin 3, wherein the pin 1 is connected to the resistor R * One end of the resistor R2 is connected to the positive power supply terminal +VCC, the pin 3 is connected to the common connection end of the resistor R2 and the resistor R3, and the pin 1 is connected to the moving contact, the pin 2 is connected to the normally open contact, and the pin 3 is connected to the normally closed contact.

7. The top drive lifting ring state change signal acquisition circuit according to claim 4, characterized in that: The connecting rod is a lead bar.

8. The top drive lifting ring state change signal acquisition circuit according to claim 1, characterized in that: The models of the transmitting encoder include HT12D, TLN101A, DL9445, and PT2262S.

9. A top drive lifting ring status detection system, characterized in that: The device comprises a top drive lifting ring state change signal acquisition circuit and a control terminal according to any one of claims 1 to 8, wherein the control terminal comprises a receiving decoder, a latch, a controller, an execution terminal and a power supply module, wherein: The input end of the receiving decoder is connected to the output end of the transmitting encoder, and is used to receive the encoded transmitting signal sent by the transmitting encoder and decode the encoded transmitting signal to form a decoded signal; The input end of the latch is connected to the output end of the receiving decoder, and the latch is triggered to output a latch signal according to the decoding signal; The input end of the controller is connected to the latch and is used to control whether the execution terminal performs corresponding protection measures according to the latch signal output by the latch.

10. A top drive lifting ring status detection system according to claim 9, characterized in that: The controller includes one or more of a 51 single-chip microcomputer, an ARM microcontroller, an AVR microcontroller, an MSP single-chip microcomputer, or a PIC single-chip microcomputer.

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