Flange locking control method and locking device

Abstract

The invention relates to the technical field of intelligent equipment, and provides a flange locking control method and a flange locking device.The flange locking device comprises a second driving part, a locking part, a torque detection unit and a control unit; the second driving piece is connected with the locking piece and controls the locking piece to move and clamp the flange. The torque detection unit is connected with the second driving part and used for detecting the numerical value of the torque applied by the second driving part. The control unit is in wireless connection with the torque detection unit, the control unit is connected with the second driving part, and the control unit starts or stops the second driving part according to the received torque value; the loosening condition of the flange can be detected in real time, and meanwhile, the tightening work after loosening can be automatically carried out under the non-stop condition.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent equipment, and in particular to a flange locking control method and a locking device. Background Art

[0002] In the fields of building materials, metallurgy, chemical industry and nuclear industry, some large equipment are usually connected by flanges and bolts. There are more than a hundred bolts with relatively large diameter and preload force. Torque wrench is used to apply preload force. Because the equipment has large diameter, large number of bolts and wide distribution range, a special operating platform is required when manual hand-held torque wrench is used. To ensure uniform distribution of preload force, it is necessary to tighten in symmetrical positions and perform multiple rounds of tightening. The operation is cumbersome, the work is difficult, the working time is long and the efficiency is very low. Therefore, disassembly, assembly and maintenance all generate a lot of workload. At the same time, these devices may be in a harmful environment in some scenarios, and long-term work may affect the health of the staff.

[0003] The large rectangular flange automatic locking device disclosed in CN115575078B comprises a flange cover, a universal seal, a flange seat, an automatic locking unit and connecting bolts; the flange seat is located at the rectangular opening position of the pressure-bearing cavity of the pressure vessel and is the installation base of the automatic locking device, and the flange cover covers the flange seat; there are four sets of automatic locking units, which are respectively fixed on the four sides of the rectangular opening of the flange seat by connecting bolts, and the automatic locking units lock or loosen the flange cover and the flange seat; the universal seal is installed in the end face sealing groove of the flange seat, and when the flange cover and the flange seat are locked, the flange cover and the flange seat are sealed.

[0004] At present, the locking efficiency of the locking structure through bolts is low, the structure is complex, and the control is inconvenient. At the same time, after the equipment has been working for a long time, the locking device may become loose due to flange vibration and other reasons, thereby causing safety hazards. The locking state cannot be effectively checked when the equipment is running, and it is difficult to tighten the equipment without stopping the machine after the locking becomes loose. Summary of the invention

[0005] At present, the locking efficiency of the locking structure through bolts is low, the structure is complex, and the control is inconvenient. At the same time, after the equipment has been working for a long time, the locking device may become loose due to flange vibration and other reasons, thereby causing safety hazards. The locking state cannot be effectively checked when the equipment is running, and it is difficult to tighten the equipment without stopping the machine after the locking becomes loose.

[0006] In view of this, the present invention aims to provide a flange locking control method. In the present invention, the flange locking control method includes:

[0007] Step S1, obtaining the diameter of the flange to be locked, calculating a plurality of clamping points of the flange to be locked, calculating the installation position according to the clamping points, and installing the locking devices one by one at the installation positions;

[0008] Step S2, after receiving the locking instruction, driving the locking member in the locking device to move to the to-be-clamped point, and starting the locking member to perform the locking operation;

[0009] Step S3, obtaining the torque values ​​of the driving members in the plurality of locking members in real time, and monitoring each of the torque values ​​separately, setting a first torque threshold value of the locking state of the locking member, and comparing the plurality of torque values ​​with the first torque threshold value one by one;

[0010] Step S4, when the torque value reaches the set first torque threshold, the driving member in the locking member is stopped and the inspection state is entered;

[0011] Step S5, in the inspection state, presetting an acquisition time t, acquiring the torque value once every acquisition time t, setting a second torque threshold value of a loose state of the locking member, and comparing the torque value with the second torque threshold value;

[0012] Step S6, when the torque value is less than the second torque threshold, restarting the driving member in the locking member to lock the flange, and when the torque value reaches the first torque threshold again, stopping the driving member in the locking member from working;

[0013] Step S7, repeat step S5 and step S6.

[0014] Further, in step S2, the locking operation includes:

[0015] The clamping plates in the locking member are continuously driven to apply clamping forces to both sides of the flange to be locked, and the clamping forces applied on both sides are of the same magnitude.

[0016] Furthermore, an elastic member is provided between the clamping plates, and the inspection state further includes detecting the state of the elastic member;

[0017] The detecting of the state of the elastic member comprises:

[0018] Arranging a plurality of positioning points on the elastic member;

[0019] Acquire a positioning point image when the torque value reaches the first torque threshold, and process the positioning point image to form a positioning point comparison image;

[0020] Acquire a real-time positioning point image every other acquisition time t, process the acquired positioning point image to form a positioning point state image, and compare the positioning point state image with the positioning point comparison image to calculate the positioning point offset rate value;

[0021] Preset an offset rate threshold, compare the offset rate value of the positioning point with the offset rate threshold, and when the offset rate value of the positioning point is greater than the offset rate threshold, determine whether the current torque value is less than the second torque threshold;

[0022] When the torque value is less than the second torque threshold, executing step S6;

[0023] When the torque value is greater than or equal to the second torque threshold, the current torque value is reacquired and the acquired torque value is recompared with the second torque threshold. When the torque value is less than the second torque threshold, step S6 is executed. When the torque value is still greater than or equal to the second torque threshold, the drive component is inspected and maintained.

[0024] The present invention also discloses a flange locking device, which includes a second driving member, a locking member, a torque detection unit and a control unit;

[0025] The second driving member is connected to the locking member to control the locking member to move the clamping flange;

[0026] The torque detection unit is connected to the second driving member and is used to detect the torque value applied by the second driving member;

[0027] The control unit is wirelessly connected to the torque detection unit, and the control unit is connected to the second driving member. The control unit starts or stops the second driving member according to the received torque value.

[0028] Furthermore, the flange locking device also includes a driving mechanism and a mounting frame, the second driving member, the locking member and the torque detection unit are all arranged on the mounting frame, and the driving mechanism can control the mounting frame to approach or move away from the flange.

[0029] Further, the locking member includes a gear 1, a gear 2, a first screw rod and a clamping plate;

[0030] The driving member 2 is connected to the gear 1 and controls the gear 1 to rotate; the gear 2 is provided in two pieces and both mesh with the gear 1 for transmission; the first screw rod is provided in two pieces and is respectively fixedly connected to two gears 2;

[0031] The number of the clamping plates is two and they are located on both sides of the flange. The clamping plates are threadedly connected to the first screw rod, and the internal threads on the two clamping plates have opposite thread directions.

[0032] Furthermore, the flange locking device further comprises a locking mechanism mounted on the mounting frame, wherein the locking mechanism can limit the rotation of the first screw rod when the second driving member stops working;

[0033] The locking mechanism comprises a limit gear, a limit plate and a transmission member;

[0034] The limit gear is fixed on the first screw rod, the limit plate is located at the upper end of the first screw rod, and the bottom of the limit plate is provided with limit teeth meshing with the limit gear;

[0035] The transmission member can control the limit plate to approach or move away from the limit gear.

[0036] Furthermore, the transmission member includes a limit rotating shaft, a sliding block, an electric telescopic rod, a connecting rod, a movable block, a limit step and a toggle block;

[0037] The limiting rotating shaft is rotatably mounted on the mounting frame and is located on one side of the first screw rod and is arranged parallel to the first screw rod. The limiting plate is mounted on the limiting rotating shaft through a torsion spring. Under the action of the torsion spring, the limiting plate can be rotated in a direction away from the first screw rod with the limiting rotating shaft as a reference;

[0038] The sliding block is slidably arranged on the mounting frame, and the electric telescopic rod controls the sliding block to move on the mounting frame; one end of the connecting rod is hinged to the sliding block, and the other end is fixed with the movable block;

[0039] The limiting step is fixed on the mounting frame, and the upper end of the limiting step is provided with a step groove which gradually increases from the direction away from the sliding block to the direction close to the sliding block, and the step groove is for the movable block to slide;

[0040] The toggle block is fixed to one end of the limit plate away from the limit shaft, and the bottom end of the toggle block contacts the movable block; when the movable block moves to the uppermost end of the step groove, the limit plate can contact and abut the first screw rod under the toggle of the toggle block.

[0041] Further, the clamping plate comprises a connecting portion and a clamping portion, and the connecting portion and the clamping portion are detachably connected;

[0042] The connecting portion is provided with a plug-in block, and the clamping portion is provided with a plug-in slot for inserting the plug-in block.

[0043] Furthermore, the plug-in block is provided with an installation slot, a second screw is rotatably installed in the installation slot, two fixing plates are threadedly connected to the second screw, and the rotation directions of the internal threads on the two fixing plates are opposite;

[0044] The clamping portion is provided with a connecting groove for the fixing plate to be inserted into, and the shape of the clamping portion is adapted to the connecting portion of the flange.

[0045] The flange locking control method disclosed in the present invention measures the torque value of the driving member that controls the locking work of the locking member, and determines whether the locking of the flange is loose by monitoring the movement of the torque value. The locking state of the flange can be remotely monitored without manual maintenance, and the tightening work can be performed remotely, saving labor and eliminating safety hazards. At the same time, through the detection of the positioning points on the elastic members between the building plates, double monitoring is used to determine whether the flange is loose, thereby ensuring the accuracy of the monitoring effect, and being able to determine whether there is a fault in the work of the second drive, which is convenient for timely maintenance work.

[0046] At the same time, the flange locking device disclosed in the present invention, through the setting of the locking member, drives the two clamping plates to move and lock the flange through the driving member 2, thereby replacing the existing bolt tightening method. Not only does it not need manual locking work, but it is also convenient to operate in different usage scenarios and has a wide range of applications. It cooperates with the torque detection to ensure that the clamping force of each locking point is the same, thereby improving the stability of the overall flange connection, and can detect in real time and automatically tighten after loosening.

[0047] In addition, through the setting of the locking mechanism, after the flange is locked, the locking mechanism is started to limit the first screw rod to prevent the first screw rod from rotating in the locked state. In addition to the locking function of the first screw rod and the driving member itself, a limiting meshing tooth and a limiting gear are provided for cooperative locking, which further prevents the first screw rod from rotating, improves the stability in the locked state, and reduces the loosening phenomenon of the flange after locking; at the same time, the clamping plate is set as a detachable connecting part and clamping part, and the clamping part can be replaced according to the locking of flanges of different diameters, so that the shape of the clamping part can be closer to the shape of the clamped flange, thereby improving the stability of the flange clamping and locking.

[0048] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0050] Figure 1A diagram showing the installation position of a flange locking device on a flange in one embodiment of the present invention;

[0051] Figure 2 A schematic diagram of a flange locking device in an embodiment of the present invention when it is not locked;

[0052] Figure 3 It is a structural schematic diagram of a flange locking device when locked in one embodiment of the present invention;

[0053] Figure 4 A perspective schematic diagram of a flange locking device in one embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of the connection between gear 1 and gear 2 in one embodiment of the present invention;

[0055] Figure 6 is a schematic diagram of a flange locking device in Example 3 of the present invention;

[0056] Figure 7 This is a schematic structural diagram of an elastic member in one embodiment of the present invention;

[0057] Figure 8 A schematic diagram of the structure of a locking mechanism in one embodiment of the present invention;

[0058] Fig. 9 for Figure 8 A partial schematic diagram of

[0059] Fig.10 for Figure 8 Schematic diagram of the cross section in the AA direction;

[0060] Fig.11 A schematic diagram of a locking state of a locking device in one embodiment of the present invention;

[0061] Fig.12 A schematic diagram of the structure of a limit tooth and a limit gear in one embodiment of the present invention;

[0062] Fig.13 A schematic diagram of clamping a clamping plate in one embodiment of the present invention;

[0063] Fig.14 A perspective schematic diagram of a clamping plate in one embodiment of the present invention;

[0064] Fig.15 The figure is a schematic diagram of a reinforced page structure in one embodiment of the present invention.

[0065] Description of reference numerals:

[0066] 1. Flange 1; 2. Flange 2; 3. Bending moment compensator; 4. Driving member 2; 5. Bracket; 6. Mounting frame; 7. Locking member; 71. Clamping plate; 711. Connecting part; 712. Clamping part; 713. Plug-in block; 714. Plug-in slot; 715. Second screw rod; 716. Fixed plate; 717. Connecting slot; 718. Reinforcement page; 72. First screw rod; 73. Gear 1; 74. Gear 2; 75. Elastic member; 8. Locking mechanism; 81. Limiting gear; 82. Limiting plate; 821. Limiting meshing tooth; 83. Limiting rotating shaft; 84. Torsion spring; 85. Sliding block; 86. Connecting rod; 87. Movable block; 88. Limiting step; 89. Toggle block. DETAILED DESCRIPTION

[0067] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0068] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0069] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices; "fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connection, welding or bonding, etc.

[0070] In the prior art, the locking efficiency of the locking structure through the bolt is low, the structure is complex, and the control is inconvenient. At the same time, after the equipment has been working for a long time, the locking device may become loose due to flange vibration and other reasons, thereby causing safety hazards. The locking state cannot be effectively checked when the equipment is running, and it is difficult to tighten the equipment without stopping the machine after the locking becomes loose.

[0071] Embodiment 1

[0072] The present invention provides a flange locking control method. In the present invention, the flange locking control method includes:

[0073] Step S1, obtain the diameter of the flange to be locked, calculate the multiple clamping points of the flange to be locked (determine the number of locking devices required according to the diameter of the flange to ensure locking stability). In this embodiment, Figure 1 As shown, four points to be clamped are set (the dotted box indicates the clamping points), and the installation positions are calculated according to the points to be clamped, and the locking devices are installed one by one at the installation positions; wherein, in this embodiment, the flanges to be locked are set as flange one 1 and flange two 2;

[0074] Step S2, after receiving the locking instruction, the driving member 1 drives the locking member 7 in the locking device to move to the to-be-clamped point, and the driving member 2 4 is started to drive the locking member 7 to clamp and lock the flange 1 1 and the flange 2 2;

[0075] Step S3, obtaining the torque values ​​of the second driving member 4 of the four locking members 7 in real time, and monitoring each torque value separately, setting a first torque threshold value of the locking state of the locking member 7 (the first torque threshold value is the torque value of the second driving member 4 when the locking member 7 is locked, which can be adjusted according to actual conditions), and comparing the four torque values ​​with the first torque threshold value one by one;

[0076] Step S4, when the driving member 2 4 is working, the torque value of the driving member 2 4 gradually increases. When the torque value reaches the first torque threshold value, it means that the locking member 7 has completed the locking work of the flange 1 and the flange 2, and the driving member 2 4 in the locking member 7 is stopped, the locking work is stopped, and the inspection state is entered;

[0077] Step S5, in the inspection state, the tightness of the locking is monitored, an acquisition time t is preset, and a torque value is acquired every other acquisition time t. The time t can be modified and set according to the actual on-site conditions. In this embodiment, the torque value is acquired once every hour, and a second torque threshold value of the loose state of the locking member 7 is set (the second torque threshold value is the minimum torque value of the driving member 2 4 when the locking member 7 is locked, the second torque threshold value is less than the first torque threshold value, and the second torque threshold value can be adjusted according to the actual situation), and the torque value is compared with the second torque threshold value; in the locked state, the torque value of the driving member 2 4 is between the second torque threshold value and the first torque threshold value;

[0078] Step S6, when the torque value is less than the second torque threshold, it indicates that the locking member 7 has been out of the locking state and has become loose, and the driving member 24 in the locking member 7 is restarted to lock the flange; when the torque value reaches the first torque threshold again, it indicates that the locking member 7 has re-locked the flange, and the driving member in the locking member 7 is stopped;

[0079] Step S7, repeating steps S5 and S6 to re-tighten the loose locking member 7.

[0080] Wherein, in step S2, the locking operation includes:

[0081] The clamping plate 71 in the locking member 7 is continuously driven to apply a clamping force to both sides of the flange to be locked, and the clamping force applied on both sides is the same in magnitude.

[0082] like Figure 7 As shown, an elastic member 75 is provided between the two clamping plates 71, and the inspection state also includes detecting the state of the elastic member 75;

[0083] The detecting of the state of the elastic member 75 includes:

[0084] A plurality of positioning points are provided on the elastic member 75;

[0085] Acquire a positioning point image when the torque value reaches the first torque threshold, and process the positioning point image (including grayscale, edge extraction, image sharpening, etc.) to form a positioning point comparison image;

[0086] The real-time positioning point image is acquired every acquisition time t, the acquired positioning point image is processed to form a positioning point state image, and the positioning point state image is compared with the positioning point comparison image to calculate the positioning point offset rate value, and the positioning point offset rate value is calculated as follows: (actual offset of the positioning point - normal offset of the positioning point) / normal offset of the positioning point;

[0087] The actual offset of the positioning point is obtained by comparing the positioning point state image with the positioning point comparison image. The normal offset of the positioning point is the maximum value of the offset of the elastic member 75 affected by vibration in the locked state.

[0088] A displacement rate threshold is preset, and the positioning point displacement rate value is compared with the displacement rate threshold. When the positioning point displacement rate value is greater than the displacement rate threshold, it indicates that the displacement of the positioning point on the elastic member 75 is large, that is, the elastic member 75 is stretched, that is, the clamping plates 71 are away from each other, and the locking is loosened;

[0089] In order to avoid misjudgment, it is simultaneously determined whether the current torque value is less than the second torque threshold;

[0090] When the torque value is less than the second torque threshold, both methods determine that the locking of the locking member 7 is loose, and then step S6 is executed to re-lock the locking operation;

[0091] When the torque value is greater than or equal to the second torque threshold, it means that the conclusions of the two judgment methods are different. The current torque value is then acquired again, and the acquired torque value is compared with the second torque threshold again. When the torque value is less than the second torque threshold, it means that the first judgment was a misjudgment, and step S6 is executed to perform locking work; when the torque value is still greater than or equal to the second torque threshold, it means that the conclusions of the two judgment methods are still different. At this time, the driving component 24 is likely to have a fault, and the driving component is inspected and repaired to troubleshoot the fault.

[0092] The flange locking control method disclosed in the present invention measures the torque value of the driving member that controls the locking work of the locking member 7, and determines whether the locking of the flange is loose by monitoring the movement of the torque value. The locking state of the flange can be remotely monitored without manual maintenance, and the tightening work can be performed remotely, saving labor and eliminating safety hazards. At the same time, by detecting the positioning points on the elastic member 75 between the building plates, double monitoring is used to determine whether the flange is loose, thereby ensuring the accuracy of the monitoring effect, and being able to determine whether there is a fault in the work of the second drive, which is convenient for timely maintenance work.

[0093] Embodiment 2

[0094] The present invention also discloses a flange locking device for connecting and locking flange 1 and flange 2. Figure 2 and Figure 3 As shown, in this embodiment, the flange locking device includes a driving member 24, a locking member 7, a torque detection unit and a control unit; the driving member 24 is connected to the locking member 7 to control the locking member 7 to move the clamping flange; the torque detection unit is connected to the driving member 24 to detect the torque value applied by the driving member 24; the torque detection unit at least includes a torque detector; the control unit is wirelessly connected to the torque detection unit, the control unit is connected to the driving member 24, and the control unit starts or stops the driving member 24 according to the received torque value; the control unit includes an execution unit and a comparison unit; the execution unit is connected to the driving member 24 to control the start and stop of the driving member 24; the comparison unit is set with a torque threshold, the comparison unit compares the torque value with the torque threshold, and when the torque value of the driving member 24 is less than the torque threshold, the driving member 24 is started.

[0095] In order to facilitate the implementation of understanding the torque value of each driving member 2 4, a display screen is set on the control unit, and the display screen displays the received torque value, so that the torque value of the driving member 2 4 and the working condition of each driving member 2 4 can be understood intuitively.

[0096] In order to adjust the overall position of the locking member 7, the flange locking device also includes a driving mechanism and a mounting frame 6, the driving member 2 4, the locking member 7 and the torque detection unit are all arranged on the mounting frame 6, and the driving mechanism can control the mounting frame 6 to approach or move away from the flange, and the driving mechanism includes a driving member 1; the driving member 1 and the driving member 2 4 are configured as motors or hydraulic motors, and the execution unit in the control unit is connected to the motor or hydraulic motor through a cable or a pipeline; specifically, a bracket 5 detachably mounted on one side of the flange 1 is provided, and the mounting frame 6 is slidably connected to the bracket 5, and the mounting frame 6 and the driving member 2 4, the locking member 7 and the torque detection unit on the mounting frame 6 are driven to rise and fall together through the driving member 1, thereby driving the clamping plate 71 to approach or move away from the flange.

[0097] In order to facilitate the clamping control of the flange, such as Figure 4 and Figure 5 As shown, the locking member 7 is configured as a gear 1 73, a gear 2 74, a first screw rod 72 and a clamping plate 71, the driving member 2 4 is connected to the gear 1 73 and controls the rotation of the gear 1 73; the gear 2 74 is configured as two and both are meshed with the gear 1 73 for transmission; the first screw rod 72 is configured as two and respectively fixedly connected to the two gear 2s 74; the clamping plates 71 are configured as two and are located on both sides of the flange, the clamping plates 71 are threadedly connected to the first screw rod 72, and the thread rotation directions of the internal threads on the two clamping plates 71 are opposite; in addition, the thread angle of the first screw is configured to be no greater than 30 degrees, and is configured to be 30 degrees in the present embodiment, so as to ensure the self-locking function of the screw rod itself and limit the movement of the clamping plate after locking.

[0098] In order to avoid damage to the clamping plate 71 due to excessive clamping force, a bending moment compensator 3 is arranged between the two clamping plates 71. When the torque value reaches a preset torque threshold, the bending moment compensator 3 is activated to prevent deformation of the lead screw due to excessive clamping torque.

[0099] The flange locking device disclosed in the present invention, through the setting of the locking member 7, drives the two clamping plates 71 to move and lock the flange through the driving member 2 4, replacing the existing bolt tightening method. Not only does it not need manual locking work, but it is also convenient to operate in different usage scenarios and has a wide range of applications. It cooperates with the torque detection to ensure that the clamping force of each locking point is the same, thereby improving the stability of the overall flange connection, and can detect in real time and automatically tighten after loosening.

[0100] Embodiment 3

[0101] In order to adapt to different usage scenarios, the position adjustment of the locking member 7 is made more diverse, such as Figure 6 As shown, the bracket 5 and the mounting frame 6 are arranged to be hinged, and the driving member 1 is used to drive the mounting frame 6 to rotate on the bracket 5, and the clamping plate 71 is controlled to approach or move away from the flange by rotation.

[0102] Embodiment 4

[0103] In order to further maintain the clamping force after the flange is locked and prevent the clamping plate 71 from moving or the first screw rod 72 from rotating, a locking mechanism 8 is provided to prevent the first screw rod 72 from rotating. The locking mechanism 8 is installed on the mounting frame 6. The locking mechanism 8 can limit the rotation of the first screw rod 72 when the driving member 4 stops working.

[0104] The structure of the locking mechanism 8 is improved to avoid its structure being too complicated and affecting the overall use of the locking member 7, such as Figure 8-Figure 12 As shown, the locking mechanism 8 is configured as a limit gear 81, a limit plate 82 and a transmission member; the limit gear 81 is fixed on the first screw rod 72, and the fixing method can be welding or spline connection. The limit plate 82 is located at the upper end of the first screw rod 72, and the bottom of the limit plate 82 is provided with a limit tooth 821 meshing with the limit gear 81, and the transmission member can control the limit plate 82 to approach or move away from the limit gear 81. When moving away, the limit tooth 821 on the limit plate 82 is disengaged from the limit gear 81, and the two do not restrict each other. When the limit plate 82 approaches the limit gear 81, the limit tooth 821 at the bottom of the limit plate 82 is meshed with the limit gear 81, and the limit gear 81 is locked, which can limit the rotation of the limit gear 81 and the first screw rod 72.

[0105] In order to facilitate control, the transmission member is set as a linkage structure with a stable structure. Specifically, the transmission member includes a limit shaft 83, a sliding block 85, an electric telescopic rod, a connecting rod 86, a movable block 87, a limit step 88 and a toggle block 89; the limit shaft 83 is rotatably installed on the mounting frame 6 through a bearing, and the limit shaft 83 is located on one side of the first screw rod 72 and is arranged parallel to the first screw rod 72. The limit plate 82 is installed on the limit shaft 83 through a torsion spring 84. The limit plate 82 can rotate in a direction away from the first screw rod 72 with the limit shaft 83 as a reference under the action of the torsion spring 84. One end of the limit plate 82 extends in the direction of the first screw rod 72, and a limit tooth 821 is provided at the bottom of the extension; the sliding block 85 can slide on the mounting frame 6, and the electric telescopic rod controls the sliding block 85 to move on the mounting frame 6. The electric telescopic rod starts and stops working with the driving member 2. When the driving member 2 is started, the electric The movable telescopic rod is extended, and when the driving member 2 stops, the electric telescopic rod pulls the sliding block to retract, so that the sliding block is away from the limiting step; one end of the connecting rod 86 is hinged with the sliding block 85 so that the connection is tilted when the sliding block 85 moves, and the other end of the connecting rod 86 is fixed with a movable block 87, which is protruding and arranged on the side of the connecting rod 86. The movable block 87 is tilted and has a sliding surface that can slide at the bottom; the limiting step 88 is fixed on the mounting frame 6, and the upper end of the limiting step 88 is provided with a step groove that gradually increases from the direction away from the sliding block 85 to the direction close to the sliding block 85, and the step groove is provided for the movable block 87 to slide, and the movable block 87 can slide back and forth between the low and high positions of the step groove of the limiting step 88; the toggle block 89 is fixed on one side of the limiting plate 82, and is located at one end away from the first screw rod 72, so that when the toggle block 89 rises, the limiting plate 82 drops, and the bottom end of the toggle block 89 is always in contact with the top of the movable block 87 under the action of the torsion spring 84.

[0106] When the first screw rod 72 is not locked, Fig.10 As shown, the movable block 87 is located at the lowest point of the step groove of the limiting step 88. Under the action of the torsion spring 84, the limiting teeth 821 at the bottom of the limiting plate 82 are separated from the limiting gear 81 on the first lead screw. After the flange is locked, the first lead screw 72 needs to be locked, and the electric telescopic rod is started to drive the sliding block 85 to move away from the limiting step 88. Driven by the connecting rod 86, the movable block 87 is pulled from the lower part of the limiting step 88 to the higher part of the limiting step 88, that is, from Fig.10 The status changes to Fig.11 When the movable block 87 moves to a high position, it drives the toggle block 89 to rotate clockwise, driving the limit plate 82 downward, so that the limit teeth 821 at the bottom of the limit plate 82 contact and abut the limit gear 81 on the first screw rod 72 to limit the rotation of the first screw rod 72.

[0107] By setting the locking mechanism, after the flange is locked, the locking mechanism is started to limit the first screw rod 72 to prevent the first screw rod 72 from rotating in the locked state. In addition to the locking function of the first screw rod 72 and the driving member itself, a limiting tooth 821 and a limiting gear 81 are provided to cooperate and lock, which further prevents the first screw rod 72 from rotating, improves the stability in the locked state, and reduces the loosening phenomenon after the flange is locked.

[0108] Embodiment 5

[0109] In order to improve the stability of flange locking, the clamping plate 71 can stably clamp flanges of different diameters, such as Figure 13-Figure 15 As shown, the clamping plate 71 is configured as a connecting portion 711 and a clamping portion 712, the connecting portion 711 and the clamping portion 712 are detachably connected, the first screw rod 72 is threadedly connected to the connecting portion 711, and the clamping portion 712 is mainly used to enable the clamping portion 712 to be removed from the connecting portion 711; a plug-in block 713 is provided on the connecting portion 711, and a plug-in slot 714 is provided on the clamping portion 712 for inserting the plug-in block 713. Through the coordinated arrangement of the plug-in block 713 and the plug-in slot 714, the connection strength of the connecting portion 711 and the clamping portion 712 is improved, the bonding between the two is improved, and uniform force is ensured; at the same time, reinforcing pages 718 are evenly arranged on the outer side of the connecting portion 711, and while improving the strength of the connecting portion 711, a part of the clamping portion 712 is between the reinforcing page 718 and the plug-in block 713, further improving the connection and force stability of the clamping portion 712.

[0110] Regarding how to connect and fix the connecting portion 711 and the clamping portion 712 to ensure stability when locking the flange; an installation groove is provided on the plug-in block 713, and a second screw rod 715 is rotatably installed in the installation groove through a bearing, and a small motor for controlling the rotation of the second screw rod 715 is provided in the installation groove, and two fixing plates 716 are threadedly connected to the second screw rod 715, and the rotation directions of the internal threads on the two fixing plates 716 are opposite; in other embodiments, the threaded section on the second screw rod 715 can also be set to a threaded section with opposite rotation directions, which is consistent with the first screw rod 72, and the purpose of both is to ensure the relative movement between the two plates (that is, relatively close or relatively far away); the clamping portion 712 is provided with a connecting groove 717 for the fixing plate 716 to be inserted, and the shape of the clamping portion 712 is adapted to the connecting portion 711 of the flange.

[0111] Regarding the fixing plate 716, a portion connected to the second screw rod 715 and slidably connected to the bottom of the mounting groove is provided at the bottom of the fixing plate 716, and a limited protrusion portion is provided on the side near the upper end, and a corresponding recessed portion matching the protrusion portion is provided in the connecting groove 717. When the two fixing plates 716 are close to each other, they can be inserted into the connecting groove 717. After the insertion, when the two fixing plates 716 are separated from each other, the protrusion portion and the recessed portion cooperate to limit the fixing plate 716 from being separated from the connecting groove 717, thereby realizing the connection between the connecting portion 711 and the clamping portion 712.

[0112] Through the setting of the locking mechanism, after the flange is locked, the locking mechanism is started to limit the first screw rod 72 to prevent the first screw rod 72 from rotating in the locked state. In addition to the locking function of the first screw rod 72 and the driving member itself, a limiting tooth 821 and a limiting gear 81 are provided to cooperate and lock, which further prevents the first screw rod 72 from rotating, improves the stability in the locked state, and reduces the loosening phenomenon after the flange is locked; at the same time, the clamping plate 71 is provided with a detachable connecting part 711 and a clamping part 712, and the clamping part 712 can be replaced according to the locking of flanges of different diameters, so that the shape of the clamping part 712 can be closer to the shape of the clamped flange, thereby improving the stability of the flange clamping and locking.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flange locking control method, characterized in that: The flange locking control method comprises: Step S1, obtaining the diameter of the flange to be locked, calculating a plurality of clamping points of the flange to be locked, calculating the installation position according to the clamping points, and installing the locking devices one by one at the installation positions; Step S2, after receiving the locking instruction, driving the locking member (7) in the locking device to move to the to-be-clamped point, and starting the locking member (7) to perform the locking operation; Step S3, obtaining in real time the torque values ​​of the driving members in the plurality of locking members (7), and monitoring each of the torque values ​​individually, setting a first torque threshold value of the locking state of the locking member (7), and comparing the plurality of torque values ​​with the first torque threshold value one by one; Step S4, when the torque value reaches the set first torque threshold, the driving member in the locking member (7) stops working and enters the inspection state; Step S5, in the inspection state, presetting an acquisition time t, acquiring the torque value once every acquisition time t, setting a second torque threshold value of the loose state of the locking member (7), and comparing the torque value with the second torque threshold value; Step S6, when the torque value is less than the second torque threshold, restarting the driving member in the locking member (7) to lock the flange, and when the torque value reaches the first torque threshold again, stopping the driving member in the locking member (7); Step S7, repeat step S5 and step S6.

2. The flange locking control method according to claim 1, characterized in that: In step S2, the locking operation includes: The clamping plate (71) in the locking member (7) is continuously driven to apply a clamping force to both sides of the flange to be locked, and the magnitude of the clamping force applied on both sides is the same.

3. The flange locking control method according to claim 2, characterized in that: An elastic member (75) is arranged between the clamping plates (71), and the inspection state also includes detecting the state of the elastic member (75); The detecting of the state of the elastic member (75) comprises: A plurality of positioning points are arranged on the elastic member (75); Acquire a positioning point image when the torque value reaches the first torque threshold, and process the positioning point image to form a positioning point comparison image; Acquire a real-time positioning point image every other acquisition time t, process the acquired positioning point image to form a positioning point state image, and compare the positioning point state image with the positioning point comparison image to calculate the positioning point offset rate value; Preset an offset rate threshold, compare the offset rate value of the positioning point with the offset rate threshold, and when the offset rate value of the positioning point is greater than the offset rate threshold, determine whether the current torque value is less than the second torque threshold; When the torque value is less than the second torque threshold, executing step S6; When the torque value is greater than or equal to the second torque threshold, the current torque value is reacquired and the acquired torque value is recompared with the second torque threshold. When the torque value is less than the second torque threshold, step S6 is executed. When the torque value is still greater than or equal to the second torque threshold, the drive component is inspected and maintained.

4. A flange locking device, characterized in that: It comprises a second driving member (4), a locking member (7), a torque detection unit and a control unit; The second driving member (4) is connected to the locking member (7) to control the locking member (7) to move the clamping flange; The torque detection unit is connected to the second driving member (4) and is used to detect the torque value applied by the second driving member (4); The control unit is wirelessly connected to the torque detection unit, and the control unit is connected to the second driving member (4). The control unit starts or stops the second driving member (4) according to the received torque value.

5. The flange locking device according to claim 4, characterized in that: The flange locking device also includes a driving mechanism and a mounting frame (6); the second driving member (4), the locking member (7) and the torque detection unit are all arranged on the mounting frame (6); and the driving mechanism can control the mounting frame (6) to approach or move away from the flange.

6. The flange locking device according to claim 5, characterized in that: The locking member (7) comprises a gear 1 (73), a gear 2 (74), a first screw rod (72) and a clamping plate (71); The driving member 2 (4) is connected to the gear 1 (73) and controls the rotation of the gear 1 (73); the gear 2 (74) is provided in two pieces and both mesh with the gear 1 (73) for transmission; the first screw rod (72) is provided in two pieces and is respectively fixedly connected to the two gears 2 (74); The clamping plates (71) are provided in two numbers and are located on both sides of the flange. The clamping plates (71) are threadedly connected to the first screw rod (72), and the thread rotation directions of the internal threads on the two clamping plates (71) are opposite.

7. The flange locking device according to claim 6, characterized in that: The flange locking device further comprises a locking mechanism (8) mounted on the mounting frame (6), wherein the locking mechanism (8) is capable of limiting the rotation of the first screw rod (72) when the second driving member (4) stops working; The locking mechanism (8) comprises a limiting gear (81), a limiting plate (82) and a transmission member; The limiting gear (81) is fixed on the first screw rod (72), the limiting plate (82) is located at the upper end of the first screw rod (72), and the bottom of the limiting plate (82) is provided with limiting teeth (821) meshing with the limiting gear (81); The transmission member can control the limit plate (82) to move closer to or farther away from the limit gear (81).

8. The flange locking device according to claim 7, characterized in that: The transmission member comprises a limit rotating shaft (83), a sliding block (85), an electric telescopic rod, a connecting rod (86), a movable block (87), a limit step (88) and a toggle block (89); The limiting rotating shaft (83) is rotatably mounted on the mounting frame (6) and is located on one side of the first screw rod (72) and is arranged parallel to the first screw rod (72); the limiting plate (82) is mounted on the limiting rotating shaft (83) via a torsion spring (84); and the limiting plate (82) can be rotated in a direction away from the first screw rod (72) with the limiting rotating shaft (83) as a reference under the action of the torsion spring (84); The sliding block (85) is slidably arranged on the mounting frame (6), and the electric telescopic rod controls the sliding block (85) to move on the mounting frame (6); one end of the connecting rod (86) is hinged to the sliding block (85), and the other end is fixed with the movable block (87); The limiting step (88) is fixed on the mounting frame (6), and the upper end of the limiting step (88) is provided with a step groove which gradually increases in height from a direction away from the sliding block (85) to a direction close to the sliding block (85), and the step groove is used for the sliding of the movable block (87); The toggle block (89) is fixed to one end of the limit plate (82) away from the limit rotation shaft (83), and the bottom end of the toggle block (89) is in contact with the movable block (87); when the movable block (87) moves to the uppermost end of the step groove, the limit plate (82) can be in contact with the first screw rod (72) under the toggle of the toggle block (89).

9. The flange locking device according to any one of claims 6 to 8, characterized in that: The clamping plate (71) comprises a connecting portion (711) and a clamping portion (712), and the connecting portion (711) and the clamping portion (712) are detachably connected; The connecting portion (711) is provided with a plug-in block (713), and the clamping portion (712) is provided with a plug-in slot (714) for inserting the plug-in block (713).

10. The flange locking device according to claim 9, characterized in that: The plug-in block (713) is provided with an installation groove, in which a second screw rod (715) is rotatably installed, and two fixing plates (716) are threadedly connected on the second screw rod (715), and the internal threads on the two fixing plates (716) have opposite rotation directions; The clamping portion (712) is provided with a connecting groove (717) for the fixing plate (716) to be inserted into, and the shape of the clamping portion (712) is adapted to the connecting portion (711) of the flange.

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