Active safety device of logging winch

Abstract

The utility model belongs to the field of petroleum logging safety equipment, and particularly relates to an active safety device of a logging winch. The device comprises a control part, a change-over switch, an acousto-optic output part, a voice output part and a trigger part. The trigger part is configured to be connected with the control part and can send a feedback signal to the control part in response to external feedback. And the control part is configured to respond to the feedback signal to control the change-over switch, the acousto-optic output part and the voice output part so as to realize the functions of stopping the operation of the winch, sending out an acousto-optic alarm, carrying out voice broadcasting and the like. According to the device, automatic alarming and stopping of the logging winch under the abnormal working condition can be achieved, the safety of the logging winch is remarkably improved, and the device has the advantages of being low in cost, convenient and flexible to transform and use and the like and has good application prospects in the field.

Description

Technical Field

[0001] The utility model belongs to the field of oil well logging safety equipment, and particularly relates to an active safety device for a well logging winch. Background Art

[0002] At present, the well logging winch does not have a complete function of automatically stopping in case of abnormal conditions. The main mechanism is to preset the winch tension, trigger an alarm when the depth alarm is triggered, and adjust the winch torque to control the lifting force to achieve the risk control of the winch operation. The handling of abnormal conditions completely depends on the subjective judgment ability and operation ability of people, which does not meet the requirements and concepts of intrinsic safety. Summary of the Utility Model

[0003] In order to solve some or all of the problems existing in the prior art, the utility model provides an active safety device for a well logging winch.

[0004] The active safety device for the well logging winch includes:

[0005] A control unit;

[0006] A changeover switch, which is arranged on the control circuit of the well logging winch and is configured to be connected to the control unit;

[0007] An acoustic-optic output unit, which is configured to be connected to the control unit;

[0008] A voice output unit, which includes a voice broadcast program device configured to be connected to the control unit, and a first speaker configured to be connected to the voice broadcast program device;

[0009] And

[0010] A triggering unit, which is configured to be connected to the control unit and can send a feedback signal to the control unit in response to an external feedback,

[0011] wherein the control unit is configured to be able to control the changeover switch, the acoustic-optic output unit and the voice output unit in response to the feedback signal, so as to realize the functions of stopping the operation of the well logging winch, emitting corresponding acoustic-optic alarms and performing corresponding voice broadcasts.

[0012] As an extension of the above technical solution, the utility model also provides the following embodiments:

[0013] The triggering part includes a password triggering component. The password triggering component includes a sound signal processing device configured to be connected to the control part, and a voice sensor configured to be connected to the sound signal processing device. The voice sensor is configured to convert the detected voice into a first sound signal and send it to the sound signal processing device. The sound signal processing device is configured to send a first feedback signal to the control part after successfully matching the first sound signal.

[0014] The triggering part includes a current detection device. The current detection device is configured to be connected to the control part and can measure the current situation in the alarm horn circuit of the logging winch panel. The current detection device is also configured to send a second feedback signal to the control part when the current in the alarm horn circuit of the logging winch panel becomes larger.

[0015] The triggering part includes a counting optoelectronic sensor. The counting optoelectronic sensor is configured to be connected to the control part and can sense the slack situation of the logging winch cable. The counting optoelectronic sensor is also configured to send a third feedback signal to the control part when the logging winch cable slack reaches one turn.

[0016] The triggering part includes a metering optoelectronic sensor. The metering optoelectronic sensor is configured to be connected to the control part and can sense the slack situation of the logging winch cable. The metering optoelectronic sensor is also configured to send a fourth feedback signal to the control part when the slack of the logging winch cable exceeds a set number of turns.

[0017] The triggering part includes a grating sensor. The grating sensor is configured to be connected to the control part and can sense the distance between the staff and the dangerous rotating part of the logging winch. The grating sensor is also configured to send a fifth feedback signal to the control part when the distance between the staff and the dangerous rotating part of the logging winch approaches within a certain value.

[0018] The triggering part includes a wellhead cable scraping limiter triggering component. The wellhead cable scraping limiter triggering component includes a wellhead detection device and a wireless transmitting device connected in sequence, and a wireless receiving device configured to be connected to the control part. The wellhead detection device is configured to trigger the wireless transmitting device to transmit a wireless signal when triggered by an abnormal situation or when the manual emergency stop button is pressed. The wireless receiving device is configured to send a sixth feedback signal to the control part after receiving the wireless signal.

[0019] It includes a reminder delay relay, which is configured to be connected to the control unit and can send a reminder signal to the control unit when the timing reaches a preset reminder period. The control unit is configured to be able to control the voice output unit in response to the reminder signal to verbally remind the staff to perform password punching.

[0020] The voice sensor is configured to be able to convert the detected punching password into a second sound signal and send it to the sound signal processing device. The sound signal processing device is configured to be able to send a matching success signal to the control unit after successfully matching the second sound signal. The control unit is configured to be able to send a reset signal to the reminder delay relay in response to the matching success signal to achieve the timing reset of the reminder delay relay.

[0021] It includes an alarm delay relay, which is configured to be connected to the control unit, can receive the reset signal synchronously with the reminder delay relay, and can respond to the reset signal to perform timing reset. The alarm delay relay is also configured to be able to send a seventh feedback signal to the control unit when it does not obtain timing reset after the set detection time ends.

[0022] The advantages of the present utility model compared with the prior art are as follows:

[0023] It can achieve automatic parking and alarm functions under various abnormal working conditions, significantly improving the safety of the logging winch. Moreover, the active safety device of the logging winch according to the present utility model also has the advantages of low equipment cost, flexible transformation and use, etc. The automatic parking function can be selectively turned on and off, and it is applicable to various electric control logging winches, having good application prospects in this field. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the active safety device of the logging winch according to the present utility model.

[0025] All the drawings in the present utility model are schematic diagrams for illustrating the structure and principle, and are not necessarily drawn according to the actual size and proportion.

[0026] The specific meanings of the respective reference numerals in the drawings are as follows:

[0027] 1. Control unit; 2. Changeover switch; 3. Acousto-optic output unit; 4. Voice output unit; 41. Voice broadcast program device; 42. First loudspeaker; 5. Trigger unit; 51. Password trigger component; 511. Sound signal processing device; 512. Voice sensor; 513. Second loudspeaker; 52. Current detection device; 53. Counting optoelectronic sensor; 54. Measurement optoelectronic sensor; 55. Grating sensor; 56. Wellhead cable scraping limiter trigger component; 561. Wellhead detection device; 562. Wireless transmitting device; 563. Wireless receiving device; 6. Reminder delay relay; 7. Alarm delay relay; 8. Power supply unit; 9. Centralized control switch; 10. Logging winch panel alarm horn circuit; 11. Logging winch control circuit; 12. First electric wire; 100. Logging winch active safety device. Detailed implementation mode

[0028] The embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings.

[0029] Figure 1 It is a schematic structural diagram of the logging winch active safety device 100 according to the present utility model. As shown in the figure, the logging winch active safety device 100 includes a control unit 1, a changeover switch 2, an acousto-optic output unit 3, a voice output unit 4 and a trigger unit 5. The changeover switch 2 and the acousto-optic output unit 3 are both configured to be connected to the control unit 2, and the changeover switch 2 is arranged on the logging winch control circuit 11. The voice output unit 4 includes a voice broadcast program device 41 and a first loudspeaker 42. The voice broadcast program device 41 is configured to be connected to the control unit 1, and the first loudspeaker 42 is configured to be connected to the voice broadcast program device 41. The trigger unit 5 is configured to be connected to the control unit 1 and can send a feedback signal to the control unit 1 in response to an external feedback. The control unit 1 is also configured to control the changeover switch 2, the acousto-optic output unit 3 and the voice output unit 4 in response to the feedback signal to respectively realize the functions of stopping the operation of the logging winch, emitting corresponding acousto-optic alarms and performing corresponding voice broadcasts. The "corresponding voice broadcast" refers to a voice broadcast that enables the staff to understand what abnormal conditions have occurred to the logging winch or the automatic disposal status of the logging winch active safety device 100 for abnormal conditions.

[0030] With this design, when the logging winch has abnormal operating conditions, it can be detected by the triggering part 5. The triggering part 5 automatically transmits this situation to the control part 1, and the control part 1 automatically controls the relevant components to realize the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and conducting corresponding voice broadcasts. This process mainly relies on the automatic operation of the active safety device 100 of the logging winch, avoiding the subjectivity of manual control and significantly improving the safety of the logging winch. Moreover, the active safety device 100 of the logging winch also has the advantages of low equipment cost, flexible transformation and use, etc. It has a wide range of applications and has good application prospects in this field.

[0031] As Figure 1 shown, in an embodiment of the present invention, the triggering part 5 includes a password triggering component 51. The password triggering component 51 includes a sound signal processing device 511 configured to be connected to the control part 1, and a voice sensor 512 configured to be connected to the sound signal processing device 511. The voice sensor 512 is configured to convert various detected voices, such as the voice of the logging winch panel, the voice command to stop, and the broadcast voice, etc., into a first sound signal and send it to the sound signal processing device 511. The sound signal processing device 511 is configured to match the received first sound signal with a preset detection sound signal inside it. When the matching is successful, the sound signal processing device 511 will send a first feedback signal to the control part 1. The control part 1 responds to the first feedback signal and controls the change-over switch 2, the sound and light output part 3, and the voice output part 4, thereby realizing the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and conducting corresponding voice broadcasts. Through this design, the functions of automatically stopping the vehicle and giving alarms, etc. are realized through voices, passwords, etc., significantly improving the safety of the logging winch and the convenience of realizing safe operations.

[0032] Furthermore, as Figure 1 shown, in an embodiment of the present invention, the password triggering component 51 includes a second speaker 513 configured to be connected to the sound signal processing device 511, and the sound signal processing device 511 is configured to send a first command signal to the second speaker � when the received first sound signal is matched with a preset detection sound signal inside it and the matching is successful. The second speaker 513 is configured to broadcast a preset alarm voice after receiving the first command signal. Through this design, while realizing the functions of automatically stopping the vehicle and giving alarms, etc. through voices, passwords, etc., the alarm voice function is added, which plays an explanatory and further reminder role for the staff and helps to further improve the safety of the operation of the logging winch.

[0033] As Figure 1As shown, in an embodiment of the present utility model, the triggering part 5 includes a current detection device 52. The current detection device 52 is configured to be connected to the control part 5 and can measure the current situation in the alarm horn circuit 10 of the logging winch panel. Moreover, the current detection device 52 is further configured to send a second feedback signal to the control part 1 when the current in the alarm horn circuit 10 of the logging winch panel increases. In response to the second feedback signal, the control part 1 controls the change-over switch 2, the sound and light output part 3, and the voice output part 4, thereby realizing the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and performing corresponding voice broadcasts. Through this design, the function of automatically triggering the parking and alarm mechanisms when the current in the alarm horn circuit of the logging winch panel increases is realized, significantly improving the safety of the logging winch and the convenience of realizing safe operation.

[0034] As Figure 1 shown, in an embodiment of the present utility model, the triggering part 5 includes a counting optoelectronic sensor 53. The counting optoelectronic sensor 53 is configured to be connected to the control part 1 and can sense the slack condition of the cable of the logging winch. Moreover, the counting optoelectronic sensor 53 is further configured to send a third feedback signal to the control part 1 when the cable of the logging winch slacks by one turn. In response to the third feedback signal, the control part 1 controls the change-over switch 2, the sound and light output part 3, and the voice output part 4, thereby realizing the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and performing corresponding voice broadcasts. Through this design, when the cable of the logging winch slacks by one turn, the active safety device 100 of the logging winch can automatically realize functions such as parking and alarming, preventing the occurrence of safety accidents that may be caused by the failure to detect the slack condition of the cable, and significantly improving the safety of the logging winch and the convenience of realizing safe operation.

[0035] As Figure 1 shown, in an embodiment of the present utility model, the triggering part 5 includes a counting optoelectronic sensor 53. The counting optoelectronic sensor 53 is configured to be connected to the control part 1 and can sense the slack condition of the cable of the logging winch. Moreover, the counting optoelectronic sensor 53 is further configured to send a third feedback signal to the control part 1 when the cable of the logging winch slacks by one turn. The control part 1 is configured to be able to control the voice broadcast program device 41 and the first speaker 42 in response to the third feedback signal, so that the first speaker 42 broadcasts a voice prompt regarding the slack of the cable. Through this design, the staff can understand the slack condition of the cable, which helps the staff to perform targeted processing and improves the operation safety of the logging winch.

[0036] Preferably, as Figure 1As shown, in an embodiment of the present utility model, the control unit 1 is configured to control the change-over switch 2, the sound and light output unit 3, and the voice output unit 4 when the voice prompt about the cable slacking reported by the first loudspeaker 42 reaches a set number of times not less than five times, so as to realize the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and making corresponding voice announcements. Through this design, automatic parking and alarming after giving corresponding prompts to the staff are realized, significantly improving the safety of the logging winch and the convenience of realizing safe operation.

[0037] As Figure 1 shown, in an embodiment of the present utility model, the triggering unit 5 includes a metering optoelectronic sensor 54, which is configured to be connected to the control unit 1 and can sense the slacking situation of the cable of the logging winch, and the metering optoelectronic sensor 54 is further configured to send a fourth feedback signal to the control unit 1 when the cable slacks by more than a set number of turns. The control unit 1 responds to the fourth feedback signal to control the change-over switch 2, the sound and light output unit 3, and the voice output unit 4, so as to realize the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and making corresponding voice announcements. Through this design, functions such as automatic parking and alarming are realized when the cable of the logging winch slackens by multiple turns, preventing the occurrence of safety accidents that may be caused when the cable slacking situation is not detected, significantly improving the safety of the logging winch and the convenience of realizing safe operation.

[0038] As Figure 1 shown, in an embodiment of the present utility model, the triggering unit 5 includes a grating sensor 55, which is configured to be connected to the control unit 1 and can sense the distance between the staff and the dangerous rotating part of the logging winch, and the grating sensor 55 is further configured to send a fifth feedback signal to the control unit 1 when the distance between the staff and the dangerous rotating part of the logging winch approaches within a certain value. The control unit 1 responds to the fifth feedback signal to control the change-over switch 2, the sound and light output unit 3, and the voice output unit 4, so as to realize the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and making corresponding voice announcements. Through this design, when the staff enters rotating components such as the winch drum due to accidents or other reasons, the active safety device 100 of the logging winch can automatically realize functions such as parking and alarming, largely eliminating the casualties caused by such situations, meeting the safety standard that there must be a protective cover or intrinsically safe measures for the mechanical rotating part, and significantly improving the safety of the logging winch and the convenience of realizing safe operation.

[0039] As Figure 1As shown, in an embodiment of the present utility model, the triggering part 5 includes a wellhead cable scraping device limit triggering assembly 56. The wellhead cable scraping device limit triggering assembly 56 includes a wellhead detection device 561, a wireless transmitting device 562, and a wireless receiving device 563. The wellhead detection device 561 is connected to the wireless transmitting device 562, and the wireless receiving device 563 is configured to be connected to the control part 1. Moreover, the wellhead detection device 561 is configured to trigger the wireless transmitting device 562 to transmit a wireless signal when triggered by an abnormal situation or when the manual emergency stop button is pressed. The wireless receiving device 563 is configured to send a sixth feedback signal to the control part 1 after receiving the wireless signal. The control part 1 controls the changeover switch 2, the sound and light output part 3, and the voice output part 4 in response to the sixth feedback signal, thereby realizing the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and making corresponding voice announcements. Through this design, when abnormal situations such as the cable scraping device hitting the top to form high-altitude falling objects, the cable jumping the wire rope, and the instrument with abnormal depth hitting the crown block occur, the active safety device 100 of the logging winch automatically realizes functions such as parking and alarming, fills the defect that there is no emergency stop switch for the logging winch at the wellhead, meets the safety standard that an emergency stop switch needs to be set for mechanical rotating equipment and energy conversion areas, and significantly improves the safety of the logging winch and the convenience of realizing safe operation.

[0040] As Figure 1 shown, in an embodiment of the present utility model, the active safety device 100 of the logging winch includes a reminder delay relay 6 configured to be connected to the control part 1. The reminder delay relay 6 is also configured to send a reminder signal to the control part 1 when the timing reaches a preset reminder period, and the control part 1 is configured to control the voice output part 4 in response to the reminder signal to transmit relevant voice for reminding the staff to perform password punching. Through this design, the function of automatically emitting voice for reminding the staff to perform password punching by the voice output part 4 is realized, which plays a reminder role for the staff, helps to reduce the probability of the staff being absent from their posts, dozing off, and the logging winch being in an unattended operation state, and significantly improves the safety of the logging winch.

[0041] Furthermore, as Figure 1As shown, in an embodiment of the present utility model, the voice sensor 512 is configured to convert the detected check-in password into a second sound signal and send it to the sound signal processing device 511. The sound signal processing device 511 is configured to match the received second sound signal with the pre-set check-in password sound signal stored therein. When the matching is successful, the sound signal processing device 511 can send a matching success signal to the control unit 1. The control unit 1 is configured to respond to the matching success signal and send a reset signal to the reminder delay relay 6 to reset the timing of the reminder delay relay 6, so that the reminder delay relay 6 enters the next password check-in cycle. Through this design, the timing reset function of the reminder delay relay 6 after the staff completes the password check-in is realized, so that the active safety device 100 of the logging winch can continuously and cyclically remind the staff to perform password check-in under normal working conditions, which helps to reduce the probability of the staff being absent from their posts, dozing off, and the logging winch operating without supervision, and significantly improves the safety of the logging winch.

[0042] Further, as Figure 1 shown, in an embodiment of the present utility model, the active safety device 100 of the logging winch includes an alarm delay relay 7 configured to be connected to the control unit 1. The alarm delay relay 7 is configured to be connected to the control unit 1, can receive the reset signal synchronously with the reminder delay relay 6, and can perform timing reset in response to the reset signal. And the alarm delay relay 7 is further configured to send a seventh feedback signal to the control unit 1 when the timing reset is not obtained after the set detection time ends. The control unit 1 controls the change-over switch 2, the sound and light output unit 3, and the voice output unit 4 in response to the seventh feedback signal, thereby realizing the functions of stopping the operation of the logging winch, emitting corresponding sound and light alarms, and performing corresponding voice broadcasts. Through this design, when the staff fails to perform voice check-in according to the prompt of the voice output unit 4 due to reasons such as being absent from their posts or dozing off, the automatic parking and alarm of the logging winch are realized, which significantly improves the safety of the logging winch.

[0043] As Figure 1 such, in a preferred embodiment of the present utility model, the reminder delay relay 6 is configured to send a second command signal to the second speaker 513 when the timing reaches the preset reminder period. The second speaker 513 is configured to play the voice of the successful check-in timing reset preset therein after receiving the second command signal. Through this design, the staff can know whether their check-in is successful through voice broadcast, and the staff can get voice feedback after password check-in, avoiding the situation that the staff makes wrong subjective judgments due to not receiving feedback, and improving the safety of the logging winch.

[0044] As Figure 1As shown, in an embodiment of the present utility model, the active safety device 100 of the logging winch is configured to be connected to the power supply unit 8 through the first electric wire 12 to be powered by the power supply unit 8.

[0045] Preferably, a centralized control switch 9 is provided at a position on the first electric wire 12 between the power supply unit 8 and the active safety device 100 of the logging winch. The centralized control switch 9 is configured to have a power supply interface adapted to each part in the active safety device 100 of the logging winch and can physically control the opening and closing of each part in the active safety device 100 of the logging winch. Through the setting of the centralized control switch 9, it is convenient for the staff to effectively control whether each part in the active safety device 100 of the logging winch is powered on or off.

[0046] In an embodiment of the present utility model, the changeover switch 2 is configured to have the function of separating the active safety device 100 of the logging winch from the control circuit 11 of the logging winch and restoring the logging winch to the original state of manual control for starting and stopping. Through this design, the active safety device 100 of the logging winch can be selectively applied to the logging winch, that is, the logging winch can choose automatic parking or manual parking according to the actual situation, which facilitates the operation of the staff to switch to the original manual control circuit to prevent misjudgment of the active safety device 100 of the logging winch when dealing with stuck or cable slack situations.

[0047] According to the active safety device 100 of the logging winch of the utility model, through the design and combined use of components such as the control unit 1, the changeover switch 2, the sound and light output unit 3, the voice output unit 4, the trigger unit 5, the reminder delay relay 6, and the alarm delay relay 7, automatic parking and alarm are realized in case of abnormal situations such as voice parking, cable slack, and personnel approaching dangerous rotating parts. The functions of reminding the staff to regularly perform password punching, resetting the punching function, and automatic parking and alarm in case of abnormal password punching are also realized. It can be applied to various logging winches, effectively reducing the probability of accidents of the logging winch in various abnormal situations, meeting the requirements of relevant safety standards, and significantly improving the safety of the logging winch and the convenience of realizing safe operation.

[0048] In the present utility model, the "feedback signal" includes contents such as the "first feedback signal", the "second feedback signal", the "third feedback signal", the "fourth feedback signal", the "fifth feedback signal", the "sixth feedback signal", and the "seventh feedback signal".

[0049] In the present utility model, components such as the control unit 1, the changeover switch 2, the acoustic-optic output unit 3, the voice output unit 4, the trigger unit 5, the reminder delay relay 6, the alarm delay relay 7, the power supply unit 8, and the centralized control switch 9 are any components or devices capable of realizing their functions in the prior art. Their structures and working principles are well-known to those skilled in the art and will not be elaborated herein.

[0050] In the present utility model, "a plurality of" refers to natural numbers not less than 2.

[0051] In the present utility model, the "logging winch" is known to those skilled in the art and is not taken as the main object of description and is not shown in the drawings.

[0052] In the present utility model, "connection" should be understood in a broad sense, which can be the connection between physical components or electrical connection and communication connection. Its specific meaning is interpreted according to the general understanding in the context where the word is located.

[0053] In the present utility model, when "connection" represents the connection between electronic devices, the connections between various connectors are realized through wires, conductors, network cables, etc. The specific connection method is interpreted according to the general understanding in the context where the word is located.

[0054] In the present utility model, the specific meanings of "upper", "lower", "inner", "outer", "middle", "edge", etc. when expressing orientation terms are based on Figure 1 the drawing state of the active safety device 100 of the logging winch in the middle as a reference.

[0055] Finally, it should be noted that although the present utility model has been described in detail with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An active safety device for a logging winch, characterized in that, Comprising: Control unit (1); Change-over switch (2), provided on the logging winch control circuit (11) and configured to be connected to the control unit (1); Acousto-optic output unit (3), configured to be connected to the control unit (1); Voice output unit (4), including a voice broadcast program device (41) configured to be connected to the control unit (1), and a first speaker (42) configured to be connected to the voice broadcast program device (41); and Trigger unit (5), configured to be connected to the control unit (1) and capable of sending a feedback signal to the control unit (1) in response to an external feedback, wherein the control unit (1) is configured to be capable of controlling the change-over switch (2), the acousto-optic output unit (3) and the voice output unit (4) in response to the feedback signal, so as to implement the functions of stopping the operation of the logging winch, emitting corresponding acousto-optic alarms and performing corresponding language broadcasts.

2. The active safety device for a logging winch according to claim 1, characterized in that: The trigger unit (5) includes a password trigger component (51), and the password trigger component (51) includes a sound signal processing device (511) configured to be connected to the control unit (1), and a voice sensor (512) configured to be connected to the sound signal processing device (511). The voice sensor (512) is configured to be capable of converting the detected voice into a first sound signal and sending it to the sound signal processing device (511), and the sound signal processing device (511) is configured to be capable of sending a first feedback signal to the control unit (1) after successfully matching the first sound signal.

3. The active safety device for a logging winch according to claim 2, characterized in that: The trigger unit (5) includes a current detection device (52), and the current detection device (52) is configured to be connected to the control unit (1) and capable of measuring the current condition in the logging winch panel alarm horn circuit (10). The current detection device (52) is further configured to be capable of sending a second feedback signal to the control unit (1) when the current in the logging winch panel alarm horn circuit (10) becomes larger.

4. The active safety device for a logging winch according to claim 3, characterized in that: The trigger unit (5) includes a counting optoelectronic sensor (53), and the counting optoelectronic sensor (53) is configured to be connected to the control unit (1) and capable of sensing the slack condition of the logging winch cable. The counting optoelectronic sensor (53) is further configured to be capable of sending a third feedback signal to the control unit (1) when the slack of the logging winch cable reaches one turn.

5. The active safety device for a logging winch according to claim 4, characterized in that: The trigger unit (5) includes a metering optoelectronic sensor (54), and the metering optoelectronic sensor (54) is configured to be connected to the control unit (1) and capable of sensing the slack condition of the logging winch cable. The metering optoelectronic sensor (54) is further configured to be capable of sending a fourth feedback signal to the control unit (1) when the slack of the logging winch cable exceeds a set number of turns.

6. The active safety device for a logging winch according to claim 5, characterized in that: The trigger part (5) includes a grating sensor (55). The grating sensor (55) is configured to be connected to the control part (1) and can sense the distance between the staff and the dangerous rotating part of the logging winch. The grating sensor (55) is also configured to send a fifth feedback signal to the control part (1) when the distance between the staff and the dangerous rotating part of the logging winch approaches within a certain value.

7. The active safety device for a logging winch according to claim 6, characterized in that: The trigger part (5) includes a wellhead cable scraping limiter trigger assembly (56). The wellhead cable scraping limiter trigger assembly (56) includes a wellhead detection device (561) and a wireless transmitting device (562) connected in sequence, and a wireless receiving device (563) configured to be connected to the control part (1). The wellhead detection device (561) is configured to trigger the wireless transmitting device (562) to transmit a wireless signal when triggered by an abnormal situation or when an emergency stop button is pressed manually. The wireless receiving device (563) is configured to send a sixth feedback signal to the control part (1) after receiving the wireless signal.

8. The active safety device for a logging winch according to any one of claims 2 to 7, characterized in that: It includes a reminder delay relay (6). The reminder delay relay (6) is configured to be connected to the control part (1) and can send a reminder signal to the control part (1) when the timing reaches a preset reminder period. The control part (1) is configured to control the voice output part (4) in response to the reminder signal to remind the staff to punch the password in voice.

9. The active safety device for a logging winch according to claim 8, characterized in that: The voice sensor (512) is configured to convert the detected punch password into a second sound signal and send it to the sound signal processing device (511). The sound signal processing device (511) is configured to send a matching success signal to the control part (1) after successfully matching the second sound signal. The control part (1) is configured to send a reset signal to the reminder delay relay (6) in response to the matching success signal to reset the timing of the reminder delay relay (6).

10. The active safety device for a logging winch according to claim 9, characterized in that: It includes an alarm delay relay (7). The alarm delay relay (7) is configured to be connected to the control part (1), can receive the reset signal synchronously with the reminder delay relay (6), and can reset the timing in response to the reset signal. The alarm delay relay (7) is also configured to send a seventh feedback signal to the control part (1) when the timing reset is not obtained after the set detection time ends.

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