Derrick vibration monitoring system, monitoring device and monitoring method

Abstract

The present invention provides a derrick vibration monitoring system, a monitoring device and a monitoring method. The derrick vibration monitoring system comprises: a derrick to be tested, a derrick support seat and a derrick vibration monitoring device arranged between the derrick to be tested and the derrick support seat; the derrick vibration monitoring device comprises: a vibration monitor; a lateral movement mechanism installed on the derrick support seat; a vertical movement mechanism installed on the lateral movement mechanism, the vibration monitor installed on the vertical movement mechanism, and the vertical movement mechanism is used to drive the vibration monitor to move to contact with the derrick to be tested. Through the present invention, the technical problem of a small monitoring range of derrick vibration monitoring is alleviated.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore oil exploration and development, and in particular to a derrick vibration monitoring system, a monitoring device and a monitoring method. Background Art

[0002] In offshore oil exploration and development, the derrick is the main device in the oil and gas exploration and development process. It mainly plays the role of placing overhead cranes, hanging traveling blocks and big hooks, as well as storing and lifting drill pipes and oil pipes. In the actual production process, the derrick is affected by dynamic loads such as big hook load, wind load, and root load. It is also affected by the vibration of the drilling rig and the drilling process of the lower drilling tools, and the derrick will produce certain vibrations. The vibration monitoring system for the derrick status has become an important support for the maintenance of derrick equipment in offshore oil production.

[0003] At present, monitors in the field of vibration monitoring systems at home and abroad are usually fixed at the position to be tested, which can achieve long-term monitoring at a fixed position on the derrick, reducing the operating costs of personnel during the operation.

[0004] However, the offshore operating environment changes rapidly, and the load on the derrick also changes accordingly. The vibration monitor has a small monitoring range, which makes the vibration monitoring results relatively one-sided and cannot reflect the mechanical vibration changes at key positions of the derrick caused by changes in external loads during use. At present, the better solution is to increase the number of fixed vibration monitors, but the cost is also greatly increased, and the economic efficiency is poor. Summary of the invention

[0005] The object of the present invention is to provide a derrick vibration monitoring system, a monitoring device and a monitoring method to alleviate the technical problem that the monitoring range of derrick vibration monitoring is small.

[0006] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0007] The present invention provides a derrick vibration monitoring system, comprising: a derrick to be tested, a derrick support seat, and a derrick vibration monitoring device arranged between the derrick to be tested and the derrick support seat; the derrick vibration monitoring device comprises:

[0008] Vibration monitors;

[0009] A lateral movement mechanism, which is mounted on the derrick support seat;

[0010] A vertical moving mechanism is installed on the horizontal moving mechanism, and the vibration monitor is installed on the vertical moving mechanism. The vertical moving mechanism is used to drive the vibration monitor to move to contact with the derrick to be tested.

[0011] In a preferred embodiment, the transverse movement mechanism includes a transverse guide rail, a transverse slider, a lead screw, a lead screw nut and a first motor; the transverse guide rail is fixed to the derrick support seat, and the transverse slider is slidably mounted on the transverse guide rail; the lead screw is mounted on the derrick support seat, the lead screw nut is mounted on the slider and connected to the lead screw, the transverse movement mechanism is mounted on the lead screw nut, the first motor is connected to the lead screw, and the first motor is used to drive the lead screw to rotate so as to drive the lead screw nut and the transverse movement mechanism to move along the transverse guide rail.

[0012] In a preferred embodiment, the vertical moving mechanism includes a second motor, a rack and a gear meshed with the rack, the vibration monitor is connected to the gear, the rack is fixed to the screw nut, and the second motor is connected to the gear for driving the gear to rotate, thereby driving the gear and the vibration monitor to move along the gear.

[0013] In a preferred embodiment, the monitoring device includes two groups of the vertical moving mechanisms that are symmetrically arranged, and the racks in the two groups of the vertical moving mechanisms are respectively fixed on both sides of the lead screw nut.

[0014] In a preferred embodiment, the monitoring device includes a connecting tube, the vibration monitor is fixed to the top of the connecting tube, the gear is fixed in the connecting tube, and the rack is extended in the connecting tube.

[0015] The present invention provides a derrick vibration monitoring method, which adopts the above-mentioned derrick vibration monitoring system. The monitoring method includes: the lateral movement mechanism drives the vibration monitor to move to multiple monitoring points of the derrick to be tested, and the vibration monitor monitors each monitoring point in turn.

[0016] In a preferred embodiment, when the vibration monitor moves to a monitoring point and abnormal vibration occurs, the vibration monitor will continue to monitor the next monitoring point; when the vibration monitor completes the monitoring of all monitoring points and returns to the monitoring point where the abnormal vibration occurs, an alarm is performed on the monitoring point where the abnormal vibration occurs.

[0017] The present invention provides a derrick vibration monitoring device, which is applied to the above-mentioned derrick vibration monitoring system, and the monitoring device comprises:

[0018] Vibration monitors;

[0019] a lateral movement mechanism configured to be mounted on the derrick support seat;

[0020] A vertical moving mechanism is installed on the horizontal moving mechanism, and the vibration monitor is installed on the vertical moving mechanism. The vertical moving mechanism is used to drive the vibration monitor to move to contact with the derrick to be tested.

[0021] In a preferred embodiment, the transverse movement mechanism includes a transverse guide rail, a transverse slider, a lead screw, a lead screw nut and a first motor; the transverse guide rail is fixed to the derrick support seat, and the transverse slider is slidably mounted on the transverse guide rail; the lead screw is mounted on the derrick support seat, the lead screw nut is mounted on the slider and connected to the lead screw, the transverse movement mechanism is mounted on the lead screw nut, the first motor is connected to the lead screw, and the first motor is used to drive the lead screw to rotate so as to drive the lead screw nut and the transverse movement mechanism to move along the transverse guide rail.

[0022] In a preferred embodiment, the vertical moving mechanism includes a second motor, a rack and a gear meshed with the rack, the vibration monitor is connected to the gear, the rack is fixed to the screw nut, and the second motor is connected to the gear for driving the gear to rotate, thereby driving the gear and the vibration monitor to move along the gear.

[0023] The characteristics and advantages of the present invention are:

[0024] With the derrick vibration monitoring system, the vibration monitor is installed on the derrick support seat through the lateral moving mechanism and the vertical moving mechanism to provide support for the vibration monitor. The vertical moving mechanism drives the vibration monitor to move vertically so that the vibration monitor contacts the derrick to be tested for monitoring. The lateral moving mechanism can drive the vertical moving mechanism and the vibration monitor to move horizontally to adjust the position of the vibration monitor, so as to facilitate the monitoring of multiple test points of the derrick. During operation, the vertical moving mechanism first drives the vibration monitor to move downward to separate from the derrick to be tested, and then the lateral moving mechanism drives the vertical moving mechanism and the vibration monitor to move to the next test point, and the vertical moving mechanism drives the vibration monitor to move upward to contact with the derrick to be tested. The monitoring system realizes the monitoring of multiple test points of the derrick to be tested, expands the monitoring range, is conducive to accurately reflecting the mechanical vibration changes of key positions caused by changes in external loads during the use of the derrick, meets the monitoring requirements for the safety and stability of the derrick during actual production operations, and reduces the number of vibration monitors, saving costs, and has excellent economic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A front view of the derrick vibration monitoring system provided by the present invention;

[0027] Figure 2 for Figure 1 A right side view of the derrick vibration monitoring system is shown;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of a vibration monitor in a derrick vibration monitoring system is shown;

[0029] Figure 4 for Figure 1 The structural schematic diagram of the lateral movement mechanism in the derrick vibration monitoring system shown;

[0030] Figure 5a for Figure 1 A schematic diagram of the connection between the vertical moving mechanism and the vibration monitor in the derrick vibration monitoring system shown;

[0031] Figure 5b for Figure 5a A local enlarged view of point A in FIG.

[0032] Figure 6 A schematic diagram of a derrick vibration monitoring method provided by the present invention.

[0033] Description of Figure Numbers:

[0034] 1. Derrick to be tested; 10. Derrick support seat;

[0035] 20. Derrick vibration monitoring device; 2. Vibration monitor;

[0036] 70. lateral movement mechanism; 8. lateral slider; 9. lateral guide rail;

[0037] 7. Screw nut; 12. Screw; 11. First motor;

[0038] 30. Vertical moving mechanism; 3. Limit pin;

[0039] 4. Rack; 5. Gear;

[0040] 6. Tighten the screws;

[0041] 13. Connecting tube. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1

[0044] The present invention provides a derrick vibration monitoring system, such as Figure 1 and Figure 2 As shown, the monitoring system includes: a derrick to be tested 1, a derrick support seat 10 and a derrick vibration monitoring device 20 arranged between the derrick to be tested 1 and the derrick support seat 10; the derrick vibration monitoring device 20 includes: a vibration monitor 2, a lateral movement mechanism 70, and a vertical movement mechanism 30; the lateral movement mechanism 70 is installed on the derrick support seat 10; the vertical movement mechanism 30 is installed on the lateral movement mechanism 70, the vibration monitor 2 is installed on the vertical movement mechanism 30, and the vertical movement mechanism 30 is used to drive the vibration monitor 2 to move to contact with the derrick to be tested 1.

[0045] With the derrick vibration monitoring system, the vibration monitor 2 is installed on the derrick support seat 10 through the lateral moving mechanism 70 and the vertical moving mechanism 30 to provide support for the vibration monitor 2. The vertical moving mechanism drives the vibration monitor 2 to move vertically so that the vibration monitor 2 contacts the derrick 1 to be tested for monitoring. The lateral moving mechanism 70 can drive the vertical moving mechanism 30 and the vibration monitor 2 to move horizontally to adjust the position of the vibration monitor 2, so as to facilitate the monitoring of multiple test points of the derrick. During operation, the vertical moving mechanism 30 first drives the vibration monitor 2 to move downward and away from the derrick 1 to be tested, and then the lateral moving mechanism 70 drives the vertical moving mechanism 30 and the vibration monitor 2 to move to the next test point, and the vertical moving mechanism 30 then drives the vibration monitor 2 to move upward to contact the derrick 1 to be tested. The monitoring system realizes the monitoring of multiple test points of the test derrick 1, expands the monitoring range, and is conducive to accurately reflecting the mechanical vibration changes at key positions of the derrick caused by changes in external loads during use, meeting the monitoring needs for the safety and stability of the derrick during actual production operations, and reducing the number of vibration monitors 2, saving costs and having excellent economic efficiency.

[0046] like Figure 1 , Figure 2 and Figure 4As shown, the transverse moving mechanism 70 includes a transverse guide rail 9, a transverse slider 8, a lead screw 12, a lead screw nut 7 and a first motor 11; the transverse guide rail 9 is fixed to the derrick support seat 10, and the transverse slider 8 is slidably mounted on the transverse guide rail 9; the lead screw 12 is mounted on the derrick support seat 10, the lead screw nut 7 is mounted on the slider and connected to the lead screw 12, the transverse moving mechanism 70 is mounted on the lead screw nut 7, and the first motor 11 is connected to the lead screw 12. The first motor 11 is used to drive the lead screw 12 to rotate, so as to drive the lead screw nut 7 and the transverse moving mechanism 70 to move along the transverse guide rail 9. The transverse guide rail 9 plays a guiding role, and the first motor 11 provides power to drive the vertical moving mechanism 30 and the vibration monitor 2 to move and adjust the position of the vibration monitor 2. The first motor 11 can be a stepper motor.

[0047] like Figure 2 As shown, the vertical moving mechanism 30 includes a second motor (not shown in the figure), a rack 4 and a gear 5 meshed with the rack 4, the vibration monitor 2 is connected to the gear 5, the rack 4 is fixed to the screw nut 7, and the second motor is connected to the gear 5 to drive the gear 5 to rotate, so as to drive the gear 5 and the vibration monitor 2 to move along the gear 5. The second motor provides power, and the gear 5 rotates on the rack 4, driving the gear 5, the second motor and the vibration monitor 2 to move vertically, so as to make the vibration monitor 2 disengage from or approach the derrick 1 to be tested. After the vibration monitor 2 moves to the right position, the second motor stops rotating, so that the gear 5 is locked, and the vibration monitor 2 no longer moves. The vertical moving mechanism 30 can also include a vertical guide rail, which is fixed to the screw nut 7 to provide guidance for the movement of the gear 5 and the vibration monitor 2. A limit pin 3 is provided on the upper end of the rack 4 to limit the range of travel of the gear 5 and the vibration monitor 2 moving upward.

[0048] The rack 4 is fixed to the lead screw nut 7 by means of a fastening screw 6. Further, the monitoring device comprises two sets of vertical moving mechanisms 30 arranged symmetrically, such as Figure 2 , Figure 5a and Figure 5b As shown, the racks 4 in the two sets of vertical moving mechanisms 30 are respectively fixed on both sides of the lead screw nut 7, so that the vertical movement of the vibration monitor 2 is more stable, and when the vibration monitor 2 contacts the well frame 1 to be measured, the position of the vibration monitor 2 is more stable, which is convenient for the vibration monitor 2 to monitor the vibration changes of the well frame 1 to be measured and improve the monitoring accuracy.

[0049] like Figure 2 and Figure 3As shown, the monitoring device includes a connecting tube 13, a vibration monitor 2 is fixed to the top of the connecting tube 13, a gear 5 is fixed in the connecting tube 13, and a rack 4 is extended and arranged in the connecting tube 13. The connecting tube 13 provides support for the vibration monitor 2; the gear 5 and the second motor are both installed in the connecting tube 13. The rack 4 and the gear 5 are located in the connecting tube 13, which can reduce the movement of the gear 5 from external interference, improve the reliability of the monitoring device and the monitoring system during the monitoring process, and make the structure of the monitoring device more compact.

[0050] The derrick vibration monitoring system provided by the present invention realizes dynamic adjustment of the vibration monitoring position on the derrick, and the monitoring range can be expanded to 5m. It overcomes the deficiency of the fixed vibration monitor 2 in the operation process that the derrick cannot be effectively evaluated in a comprehensive and real-time manner due to the fixed monitoring position and limited monitoring range. One vibration monitor 2 can cover a wide range of vibration monitoring points, effectively reducing the number of vibration monitors 2 used, reducing the difficulty of installation and debugging, and reducing maintenance costs. Combined with the use of vibration monitors 2 in actual on-site construction operations, the number of derrick vibration monitors 2 devices used can be reduced by about 2 / 3.

[0051] In the derrick vibration monitoring system, the vibration monitor 2 is movable, which can not only conduct dynamic analysis in real time, but also conduct risk assessment of the weak points of the derrick during operation, issue early warnings in time and take preventive maintenance, reducing unnecessary waste of personnel and economic losses caused by insufficient monitoring data; it greatly improves the dynamic collection effect of vibration signals, provides greater protection for the safe operation of the derrick, and provides data support for the subsequent derrick structure design. The vibration monitor 2 is flexible and convenient to move, which overcomes the shortcomings of the fixed vibration monitor 2 that cannot fully and real-time reflect the operating status of the derrick during the monitoring process due to the fixed monitoring position, increases the reliability of the vibration monitoring data, and can predict risks to the greatest extent, so as to take effective risk avoidance measures;

[0052] Through the derrick vibration monitoring system, the dynamic status of the derrick can be monitored in real time, data can be transmitted in real time, and data support can be provided for maintenance. Based on the real-time feedback of dynamic vibration monitoring data, the operating status of the derrick can be analyzed and evaluated, so as to collect information in advance at the early stage of complex accidents, timely analyze and diagnose the causes and development trends, avoid the expansion of accidents and secondary accidents, improve the safety and reliability of derrick operations, reduce the construction operation cycle, and meet the operational requirements of reducing costs and increasing efficiency. The derrick vibration monitoring device 20 has a core controller that can effectively output abnormal points in real time, has the function of accurately finding the problem, and reduces the difficulty of manual troubleshooting.

[0053] The derrick vibration monitoring system can be installed according to the following steps: (1) Install and fix the transverse guide rail 9 on the derrick support seat 10, install the transverse slider 8 on the transverse guide rail 9, install the lead screw 12 and the lead screw nut 7 on the transverse slider 8, and install the first motor 11 on the derrick support seat 10 or the transverse guide rail 9. (2) Install the rack 4, the gear 5, and the second motor on the lead screw nut 7. (3) Connect the vibration monitor 2 with the gear 5 and the second motor. (4) Install the controller, which is electrically connected to the first motor 11, the second motor and the vibration monitor 2, and set the control point position and the abnormal data frequency.

[0054] When disassembling the derrick vibration monitoring system, it can be disassembled in the reverse order of the above installation steps.

[0055] The components of the derrick vibration monitoring device 20 can all be produced on land and transported to the site for installation, thus eliminating the need for offshore welding and other operations.

[0056] Embodiment 2

[0057] The present invention provides a derrick vibration monitoring method, which adopts the above-mentioned derrick vibration monitoring system. The monitoring method includes: the lateral movement mechanism 70 drives the vibration monitor 2 to move to multiple monitoring points of the derrick 1 to be tested, and the vibration monitor 2 monitors each monitoring point in turn.

[0058] The horizontal moving mechanism 70 can drive the vertical moving mechanism 30 and the vibration monitor 2 to move horizontally to adjust the position of the vibration monitor 2, so as to facilitate monitoring of multiple test points of the derrick. The monitoring system realizes monitoring of multiple test points of the derrick 1 to be tested, expands the monitoring range, and is conducive to accurately reflecting the mechanical vibration changes of key positions caused by changes in external loads during the use of the derrick, and reduces the number of vibration monitors 2, saving costs and having excellent economic performance.

[0059] In order to facilitate movement between multiple monitoring points, during operation, the vertical moving mechanism 30 first drives the vibration monitor 2 to move downward and away from the derrick 1 to be tested, and then the horizontal moving mechanism 70 drives the vertical moving mechanism 30 and the vibration monitor 2 to move to the next point to be tested, and the vertical moving mechanism 30 then drives the vibration monitor 2 to move upward until it contacts the derrick 1 to be tested.

[0060] In one embodiment of the present invention, when the vibration monitor 2 moves to a monitoring point and abnormal vibration occurs, the vibration monitor 2 will continue to monitor the next monitoring point; when the vibration monitor 2 completes the monitoring of all monitoring points and returns to the monitoring point where the abnormal vibration occurs, an alarm is processed for the monitoring point where the abnormal vibration occurs. In this embodiment, since the alarm is triggered after returning to the abnormal position monitoring point again, the monitoring device has already completed a monitoring cycle and can confirm whether the other points in the monitoring area have abnormal states at the same time. Returning to the monitoring point for re-monitoring can confirm the abnormal condition again to prevent false alarms.

[0061] like Figure 6 As shown, the monitoring method adopts a closed-loop control circuit. For example, there are 5 monitoring points numbered a, b, c, d, and e in the effective stroke. The vibration monitor 2 will move to the next monitoring point for monitoring at intervals of t. For example, when the vibration monitor 2 moves to position c and vibration abnormality occurs, the vibration monitor 2 will continue to monitor the next position; when the vibration monitor 2 returns to position c again, the monitoring data of the remaining positions will be analyzed and compared, and the position with abnormal data will be alarmed, and the maintenance personnel will confirm whether it is normal and whether it needs to be repaired.

[0062] Embodiment 3

[0063] The present invention provides a derrick vibration monitoring device, which is applied to the above-mentioned derrick vibration monitoring system, such as Figure 1 and Figure 2 As shown, the monitoring device includes: a vibration monitor 2, a lateral moving mechanism 70 and a vertical moving mechanism 30; the lateral moving mechanism 70 is configured to be installed on a derrick support seat 10; the vertical moving mechanism 30 is installed on the lateral moving mechanism 70, and the vibration monitor 2 is installed on the vertical moving mechanism 30, and the vertical moving mechanism 30 is used to drive the vibration monitor 2 to move to contact with the derrick 1 to be tested.

[0064] With the derrick vibration monitoring device, the vibration monitor 2 is installed on the derrick support seat 10 through the lateral moving mechanism 70 and the vertical moving mechanism 30 to provide support for the vibration monitor 2. The vertical moving mechanism drives the vibration monitor 2 to move vertically so that the vibration monitor 2 contacts the derrick 1 to be tested for monitoring. The lateral moving mechanism 70 can drive the vertical moving mechanism 30 and the vibration monitor 2 to move horizontally to adjust the position of the vibration monitor 2, so as to facilitate the monitoring of multiple test points of the derrick. During operation, the vertical moving mechanism 30 first drives the vibration monitor 2 to move downward and away from the derrick 1 to be tested, and then the lateral moving mechanism 70 drives the vertical moving mechanism 30 and the vibration monitor 2 to move to the next test point, and the vertical moving mechanism 30 then drives the vibration monitor 2 to move upward to contact the derrick 1 to be tested. The monitoring device can monitor multiple test points of the derrick 1 to be tested, expand the monitoring range, and is conducive to accurately reflecting the mechanical vibration changes of key positions caused by changes in external loads during the use of the derrick, and reduces the number of vibration monitors 2, saving costs and having excellent economic efficiency.

[0065] like Figure 1 , Figure 2 and Figure 4 As shown, the transverse moving mechanism 70 includes a transverse guide rail 9, a transverse slider 8, a lead screw 12, a lead screw nut 7 and a first motor 11; the transverse guide rail 9 is fixed to the derrick support seat 10, and the transverse slider 8 is slidably mounted on the transverse guide rail 9; the lead screw 12 is mounted on the derrick support seat 10, the lead screw nut 7 is mounted on the slider and connected to the lead screw 12, the transverse moving mechanism 70 is mounted on the lead screw nut 7, and the first motor 11 is connected to the lead screw 12. The first motor 11 is used to drive the lead screw 12 to rotate, so as to drive the lead screw nut 7 and the transverse moving mechanism 70 to move along the transverse guide rail 9. The first motor 11 provides power to drive the vertical moving mechanism 30 and the vibration monitor 2 to move and adjust the position of the vibration monitor 2. The first motor 11 can be a stepper motor.

[0066] like Figure 2As shown, the vertical moving mechanism 30 includes a second motor (not shown in the figure), a rack 4 and a gear 5 meshed with the rack 4, the vibration monitor 2 is connected to the gear 5, the rack 4 is fixed to the screw nut 7, and the second motor is connected to the gear 5 to drive the gear 5 to rotate, so as to drive the gear 5 and the vibration monitor 2 to move along the gear 5. The second motor provides power, and the gear 5 rotates on the rack 4, driving the gear 5, the second motor and the vibration monitor 2 to move vertically, so as to make the vibration monitor 2 disengage from or approach the derrick 1 to be tested. After the vibration monitor 2 moves to the right position, the second motor stops rotating, so that the gear 5 is locked, and the vibration monitor 2 no longer moves. The vertical moving mechanism 30 can also include a vertical guide rail, which is fixed to the screw nut 7 to provide guidance for the movement of the gear 5 and the vibration monitor 2. A limit pin 3 is provided on the upper end of the rack 4 to limit the range of travel of the gear 5 and the vibration monitor 2 moving upward.

[0067] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A derrick vibration monitoring system, characterized in that: include: A derrick to be tested, a derrick support seat, and a derrick vibration monitoring device provided between the derrick to be tested and the derrick support seat; The derrick vibration monitoring device comprises: Vibration monitors; A transverse movement mechanism, which is installed on the derrick support seat; the transverse movement mechanism comprises a transverse guide rail, a transverse slider, a lead screw, a lead screw nut and a first motor; The transverse guide rail is fixed to the derrick support seat, and the transverse slider is slidably mounted on the transverse guide rail; the lead screw is mounted on the derrick support seat, the lead screw nut is mounted on the slider and connected to the lead screw, the transverse moving mechanism is mounted on the lead screw nut, and the first motor is connected to the lead screw, and the first motor is used to drive the lead screw to rotate, so as to drive the lead screw nut and the transverse moving mechanism to move along the transverse guide rail; A vertical moving mechanism, which is installed on the horizontal moving mechanism, the vibration monitor is installed on the vertical moving mechanism, and the vertical moving mechanism is used to drive the vibration monitor to move to contact with the derrick to be measured; the vertical moving mechanism includes a second motor, a rack and a gear meshed with the rack, the vibration monitor is connected to the gear, the rack is fixed to the lead screw nut, and the second motor is connected to the gear to drive the gear to rotate, so as to drive the gear and the vibration monitor to move along the gear; The monitoring device comprises two groups of vertical moving mechanisms which are symmetrically arranged, and the racks in the two groups of vertical moving mechanisms are respectively fixed on both sides of the lead screw nut; The monitoring device comprises a connecting tube, the vibration monitor is fixed on the top of the connecting tube, the gear is fixed in the connecting tube, the rack is extended in the connecting tube; the gear and the second motor are both mounted on the connecting tube.

2. A method for monitoring derrick vibration, characterized in that: The derrick vibration monitoring system of claim 1 is adopted, and the monitoring method comprises: the lateral movement mechanism drives the vibration monitor to move to multiple monitoring points of the derrick to be tested, and the vibration monitor monitors each monitoring point in turn.

3. The derrick vibration monitoring method according to claim 2, characterized in that: When the vibration monitor moves to a monitoring point and abnormal vibration occurs, the vibration monitor will continue to monitor the next monitoring point; when the vibration monitor completes the monitoring of all monitoring points and returns to the monitoring point where the abnormal vibration occurs, an alarm will be processed for the monitoring point where the abnormal vibration occurs.

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