A finger cot automatic insertion and extraction device

Abstract

The application discloses a finger sleeve pipe regulating and plugging device, which comprises a frame provided with a main body and a fixing part, a driving assembly arranged on the main body, and two driving wheels. The finger sleeve pipe is arranged between the two driving wheels during use, and the two driving wheels rotate to drive the finger sleeve pipe to be plugged into or pulled out of the guide pipe at a predetermined speed. During the process, the fixing part stabilizes the finger sleeve pipe plugging device, so that the driving force of the driving wheels on the finger sleeve pipe is always stably axially applied during the plugging process of the finger sleeve pipe, the finger sleeve pipe is prevented from being bent by the force in other directions, and the purpose of preventing the finger sleeve pipe from being damaged during the plugging process is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nuclear power equipment, in particular to an automatic inserting and pulling device for a finger tube. BACKGROUND

[0002] In the field of nuclear power, the finger tube is an important component, also known as "core neutron flux tube", which is mainly used to provide a measuring channel for a core neutron flux detector. It allows the neutron flux probe to move inside it to measure the core neutron flux point by point, which is crucial for detecting the core neutron flux distribution, core power distortion and accumulating burn-up data.

[0003] During the normal operation of the reactor, the finger tube is fixed in the guide tube, the guide tube is welded on the penetration of the bottom head of the pressure vessel, and extends to the sealed assembly in the reactor instrument room through the secondary poured concrete biological shield structure. During the refueling of the reactor, the finger tube needs to be pulled out from a given core height to the bottom of the core to avoid interfering with the fuel assembly loading and unloading, and then the finger tube is reinserted after the refueling is completed.

[0004] Due to the close connection between the finger tube and the guide tube and the characteristics of the slender structure of the finger tube itself, it is easy to bend during insertion and pulling. Especially in the prior art, the insertion and pulling of the finger tube is completed manually, which requires high working experience and team cooperation level. The effort of the working group members is not stable enough when the finger tube is inserted back into the fixed tube, which is easy to bend and damage the finger tube, and the working efficiency is relatively low. Moreover, once an error occurs during the reinsertion process, the finger tube is likely to be deformed or bent, which will prevent the neutron detector from passing through, and the channel needs to be locked and the finger tube needs to be replaced, which undoubtedly increases the duration of the refueling overhaul and increases the overall radiation dose rate of the working group. SUMMARY

[0005] The automatic inserting and pulling device for the finger tube of the present application is used to solve the problem of easy bending and damage during the insertion and pulling of the finger tube, and can uniformly and stably insert and pull the finger tube from the guide tube to prevent damage to the finger tube during insertion and pulling.

[0006] To achieve the above-mentioned purpose, the present application provides an automatic inserting and pulling device for a finger tube, comprising:

[0007] A rack, the rack comprising a main body portion and a fixing portion, the fixing portion being connected to the main body portion, the fixing portion being used to fix the main body portion;

[0008] The driving assembly is arranged in the main body part, and the driving assembly comprises a driving wheel set, the driving wheel set comprises two driving wheels which are arranged at intervals and axially parallel, and the two driving wheels are coupled. In use, the finger sleeve automatic plug device installs the finger sleeve between the two driving wheels, the outer circumferential surface of the two driving wheels is attached to the finger sleeve, the frame is fixed by the fixing part, so that the finger sleeve automatic plug device is stable, the two driving wheels rotate to drive the finger sleeve to move, so as to realize the automatic plug of the finger sleeve. When the finger sleeve is plugged, the fixing part makes the finger sleeve plug device stable, so that the force of the driving wheel on the finger sleeve is always stably axially during the plug process, avoiding the force in other directions to bend the finger sleeve, achieving the purpose of preventing the finger sleeve from being damaged during the plug process, and being beneficial to improving the efficiency of the finger sleeve plug work, reducing the work time of the overhaul, and reducing the overall radiation dose rate of the work group members.

[0009] As an optional technical solution, the driving assembly further comprises a driven wheel set, the driven wheel set is arranged at intervals along the length direction of the main body part and the driving wheel set, the driven wheel set comprises two driven wheels, the two driven wheels are connected by synchronous belts respectively with adjacent driving wheels, and the two synchronous belts are parallel on two opposite sides. In use, the two synchronous belts clamp the finger sleeve on the two parallel sides, the driving wheel rotates to drive the synchronous belt, so as to drive the finger sleeve to move along its axis, and realize the automatic plug of the finger sleeve. The synchronous belt can increase the contact area between the driving assembly and the finger sleeve, so as to increase the friction and driving force of the driving assembly on the finger sleeve without changing the strength of the finger sleeve, thereby improving the efficiency of the finger sleeve plug work. At the same time, the synchronous belt can also stabilize the force between the finger sleeve and the driving assembly, and make the force distribution of the driving assembly on the finger sleeve more uniform, reducing the possibility of bending during the plug of the finger sleeve.

[0010] As an optional technical solution, the main body part comprises a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are arranged at intervals, the two driving wheels of the driving assembly are arranged in the first mounting frame and the second mounting frame respectively, and the fixing part is connected to the first mounting frame. Adjusting the interval between the first mounting frame and the second mounting frame can adjust the interval between the two driving wheels, so as to facilitate the disassembly and assembly of the finger sleeve on the finger sleeve automatic plug device of the present application, and facilitate the plug operation of the finger sleeve of different sizes, and improve the universality of the present application.

[0011] As an optional technical solution, the rack further comprises a first locking rod and a first locking piece. The first locking rod is arranged on the first mounting frame and penetrates the second mounting frame along the direction of the axial distance between the two drive wheels. The first locking piece is arranged on the side of the second mounting frame away from the first mounting frame and is threadedly connected with the first locking rod. By rotating the locking piece, the distance between the second mounting frame and the first mounting frame and the distance between the two drive wheels can be changed and maintained, so that the pressing force of the drive assembly on the finger sleeve is stable, which is conducive to reducing the possibility of bending of the finger sleeve during insertion and extraction.

[0012] As an optional technical solution, the rack further comprises a guide rod and a first compression spring. The guide rod is arranged on the first mounting frame along the direction of the axial distance between the two drive wheels and is slidably connected with the second mounting frame. The first compression spring is sleeved on the guide rod and is arranged between the first mounting frame and the second mounting frame. The guide rod and the first compression spring limit the posture of the second mounting frame when it approaches or moves away from the first mounting frame, so that the distance between the first mounting frame and the second mounting frame is uniform, thereby ensuring that the clamping force of the drive assembly on the finger sleeve is stable and uniform, which is conducive to reducing the possibility of bending of the finger sleeve during insertion and extraction. In addition, after the insertion and extraction of the finger sleeve is completed, the first locking piece is loosened, and under the action of the first compression spring, the first mounting frame and the second mounting frame can be naturally separated, which facilitates the disassembly of the finger sleeve from the finger sleeve insertion and extraction device and simplifies the work process.

[0013] As an optional technical solution, the finger sleeve automatic insertion and extraction equipment further comprises a guide assembly arranged on both sides of the drive assembly along the normal of the plane where the axes of the two drive wheels are located. The guide assembly is provided with a guide hole or a guide slot corresponding to the gap between the two drive wheels. In practice, the finger sleeve is arranged in the guide hole or the guide slot. The guide assembly can limit the flexural deformation and radial vibration of the part of the finger sleeve that is not clamped by the drive assembly, thereby avoiding axial instability of the finger sleeve and damage.

[0014] As an optional technical solution, the fixing part comprises a clamp for clamping the guide pipe to fix the finger sleeve automatic plug-pull device, the clamp comprises a first clamping part, a second clamping part, a second locking rod and a second locking piece, the second clamping part is hinged to the first clamping part, and the hinge shaft is parallel to the guide pipe; the second locking rod is hinged to the first clamping part, and the end portion is lapped on the second clamping part; the second locking piece is arranged on the side of the second clamping part away from the first clamping part and is threadedly connected with the second locking rod. The clamp is beneficial to the fixation of the guide pipe to the finger sleeve automatic plug-pull device of the present technical solution, and does not need to arrange additional structures or devices for the finger sleeve automatic plug-pull device of the present technical solution in the working environment, and has a small volume, a compact structure and is convenient for the user to operate.

[0015] As an optional technical solution, the finger sleeve automatic plug-pull device further comprises a first sensor arranged at the connection between the fixing part and the main body part, and the first sensor is used to acquire the acting force between the main body part and the fixing part. When the finger sleeve is plugged, the tension or pressure between the main body part and the fixing part is equal to the friction force between the finger sleeve and the guide pipe, and the first sensor can monitor the friction force between the finger sleeve and the guide pipe and guide the operation of the user.

[0016] As an optional technical solution, the finger sleeve automatic plug-pull device further comprises a displacement measurement assembly arranged on the rack, the displacement measurement assembly comprises a friction wheel and a second sensor, the axial direction of the friction wheel is parallel to the axial direction of the driving wheel, the friction wheel is arranged corresponding to the gap between the two driving wheels, the second sensor is connected to the friction wheel, and the second sensor is used to acquire the angular displacement of the friction wheel. When the finger sleeve automatic plug-pull device of the present technical solution is used, the surface of the friction wheel is attached to the finger sleeve, and when the finger sleeve moves along the axial direction thereof, the friction wheel is driven to rotate. Since the diameter of the friction wheel is known, the angular displacement of the friction wheel acquired by the second sensor can obtain the displacement of the finger sleeve, and the speed, acceleration and other motion information of the finger sleeve can be obtained in combination with time, thereby guiding the operation of the user.

[0017] As an optional technical solution, the displacement measuring assembly further comprises a sliding block and a second compression spring, the friction wheel and the sensor are arranged on the sliding block, the sliding block is slidably connected to the main body in the thickness direction of the main body; the second compression spring is arranged on the side of the sliding block away from the gap between the two drive wheels in the axial direction of the two drive wheels, and is connected to the main body. In practice, after the finger sleeve pipe is installed, the sliding block moves away from the finger sleeve pipe and drives the second compression spring to compress, and under the elastic force of the second compression spring, the friction wheel can always be close to the finger sleeve pipe, avoiding relative sliding between the friction wheel and the finger sleeve pipe, and facilitating the accuracy of the feedback of the finger sleeve pipe movement information by the friction wheel and the second sensor.

[0018] The one or more technical solutions provided by the present application have at least the following technical effects or advantages:

[0019] 1、The finger sleeve pipe braking plug device of the present application, by setting a rack with a main body and a fixed part, the main body is provided with a driving assembly, wherein the fixed part is used for fixing the main body, the driving assembly comprises two drive wheels, and in use, the finger sleeve pipe is installed between the two drive wheels, and the two drive wheels rotate to drive the finger sleeve pipe to be inserted or pulled out of the guide pipe at a predetermined speed. During the process, the fixed part stabilizes the finger sleeve pipe plug device, so that the driving force of the drive wheels on the finger sleeve pipe is always stably axially during the plug process of the finger sleeve pipe, avoiding the bending of the finger sleeve pipe caused by the driving force in other directions, and achieving the purpose of preventing the damage of the finger sleeve pipe during the plug process;

[0020] 2、The finger sleeve pipe braking plug device of the present application can apply relatively uniform driving force to realize automatic plug of the finger sleeve pipe, which is beneficial to prevent damage of the finger sleeve pipe during the plug process;

[0021] 3、The finger sleeve pipe braking plug device of the present application has high working efficiency, which is beneficial to reduce the working time of refueling overhaul and reduce the overall radiation dose rate of the working group members. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings described herein are used to provide further understanding of the embodiments of the present application, and form a part of the present application, and do not constitute a limitation on the embodiments of the present application;

[0023] Figure 1 is a schematic view of the finger sleeve pipe automatic plug device in the present application;

[0024] Figure 2 is Figure 1 a schematic view of the finger sleeve pipe automatic plug device in the present application;

[0025] BRIEF DESCRIPTION OF DRAWINGS:

[0026] Finger sleeve automatic plugging device-100; finger sleeve-200; guide tube-300;

[0027] Frame-1; main body-11; first mounting bracket-111; second mounting bracket-112; fixed part-12; clamp-121; first clamping part-1211; second clamping part-1212; second locking rod-1213; second locking piece-1214; first locking rod-13; first locking piece-14; guide rod-15; first compression spring-16; first sensor-17;

[0028] Drive assembly-2; drive wheel-21; motor-22; driven wheel-23; synchronous belt-24;

[0029] Guide assembly-3; guide hole-31; guide groove-32;

[0030] Displacement measurement assembly-4; friction wheel-41; second sensor-42; slider-43; second compression spring-44. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the present application, the terms "mounting", "setting", "provided with", "connection", and "connected" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, electrical connection, direct connection, indirect connection through intermediate medium, or internal communication between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0033] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "multiple" is two or more.

[0034] In the field of nuclear power, the finger sleeve is an important component, also known as "core neutron flux sleeve", which is mainly used to provide a measuring channel for the core neutron flux detector. During the normal operation of the reactor, the finger sleeve is fixed in the guide tube and is combined with the guide tube tightly. During the refueling of the reactor, the finger sleeve needs to be pulled out from the given core height to the bottom of the core to avoid interfering with the loading and unloading of the fuel assembly. The inner diameter of the finger sleeve is usually only about 5mm, which is much smaller than its length. During the insertion of the finger sleeve into the guide tube, it is easy to bend and damage due to instability. Moreover, since the maximum static friction is usually greater than the sliding friction, when the operator tries to insert the finger sleeve at a constant speed, the finger sleeve may not move at a constant speed, but repeatedly switch between low speed and high speed unstably. Especially when the insertion and extraction of the finger sleeve need to be completed by multiple members of the work group, it is difficult to adjust the force to match the resistance to the movement of the finger sleeve, which makes the force of each member of the work group unbalanced and increases the risk of damage to the finger sleeve.

[0035] Based on this, the present application provides a finger sleeve automatic insertion and extraction device. A rack with a main body and a fixing part is provided. The main body is provided with a driving assembly. The fixing part is used to fix the main body. The driving assembly includes two driving wheels. The finger sleeve is installed between the two driving wheels during use. The two driving wheels rotate to drive the finger sleeve to insert and extract from the guide tube at a predetermined speed. During the process, the fixing part stabilizes the finger sleeve insertion and extraction device, so that the force of the driving wheel on the finger sleeve is always stable and works axially along the axis of the finger sleeve during the insertion and extraction process of the finger sleeve, avoiding the bending of the finger sleeve caused by the force in other directions, and achieving the purpose of preventing the damage of the finger sleeve during the insertion and extraction process.

[0036] The technical solutions of the present application will be described in detail below with reference to the embodiments and the accompanying drawings.

[0037] Embodiment one

[0038] Please refer to Figure 1 and Figure 2 The present embodiment provides a finger sleeve automatic insertion and extraction device 100, which comprises:

[0039] A rack 1, which comprises a main body 11 and a fixing part 12. The fixing part 12 is connected to the main body 11, and the fixing part 12 is used to fix the main body 11.

[0040] The driving assembly 2 is arranged on the main body 11, and the driving assembly 2 comprises a driving wheel 21 group, the driving wheel 21 group comprises two driving wheels 21 which are arranged at intervals and axially parallel, and the two driving wheels 21 are coupled and connected. In use, the finger sleeve 200 is installed between the two driving wheels 21, the outer circumferential surface of the two driving wheels 21 is attached to the finger sleeve 200, the frame 1 is fixed by the fixing part 12, so that the finger sleeve automatic plugging device 100 is stable, the two driving wheels 21 rotate to drive the finger sleeve 200 to move at a predetermined speed, so as to realize the automatic plugging of the finger sleeve 200. When the finger sleeve 200 is plugged, the fixing part 12 stabilizes the finger sleeve 200 plugging device, so that the driving force of the driving wheel 21 on the finger sleeve 200 is always stable and axially works on the finger sleeve 200 during the plugging process of the finger sleeve 200, avoiding the action force in other directions to bend the finger sleeve 200, achieving the purpose of preventing the finger sleeve 200 from being damaged during the plugging process, which is beneficial to improve the efficiency of the finger sleeve plugging work, reduce the work time of the overhaul, and reduce the overall radiation dose rate of the work group members.

[0041] Among them, the two driving wheels 21 can be connected by a pair of gears with the same number of teeth, and one of the two driving wheels 21 is connected to the motor 22. The two driving wheels 21 can also be connected to a motor 22 respectively, and the two motors 22 drive the two driving wheels 21 at the same speed and in opposite directions. It should be noted that the motor 22 should be provided with heat dissipation measures, such as Figure 1 As shown in the figure, the frame 1 is provided with a plurality of heat dissipation holes at the position corresponding to the motor 22.

[0042] In addition, in order to maintain the stability of the plugging speed of the finger sleeve 200, a sensor can be arranged to detect the plugging speed of the finger sleeve 200, the output torque of the driving wheel 21, and / or the resistance received by the finger sleeve 200 in real time, and the sensor is connected with the driving element such as the motor 22 and forms a closed loop control.

[0043] Embodiment two

[0044] On the basis of the first embodiment, the driving assembly 2 further comprises a driven wheel 23 group, the driven wheel 23 group is arranged along the length direction of the main body 11 and is spaced from the driving wheel 21 group, the driven wheel 23 group comprises two driven wheels 23, the two driven wheels 23 are respectively connected with the adjacent driving wheel 21 through the synchronous belt 24, and the two synchronous belts 24 are parallel to the two opposite sides. When the finger sleeve automatic plugging device 100 of the present embodiment is used, the two sides of the two synchronous belts 24 clamp the finger sleeve 200, the driving wheel 21 rotates to drive the synchronous belt 24, thereby driving the finger sleeve 200 to move along the axis of the finger sleeve 200, and the automatic plugging of the finger sleeve 200 is realized. The synchronous belt 24 can increase the contact area between the driving assembly 2 and the finger sleeve 200, thereby allowing the friction and driving effect of the driving assembly 2 on the finger sleeve 200 to be increased without changing the strength of the finger sleeve 200, thereby improving the efficiency of the plugging work of the finger sleeve 200. At the same time, the synchronous belt 24 can also stabilize the force between the finger sleeve 200 and the driving assembly 2, and make the force of the driving assembly 2 on the finger sleeve 200 more uniform, thereby reducing the possibility of bending of the finger sleeve 200 during plugging.

[0045] In addition, a plurality of driving wheels 21 and driven wheels 23 can also be arranged, and the two sides of the finger sleeve 200 are clamped and driven by two pairs of synchronous belts 24.

[0046] Optionally, the main body 11 comprises a first mounting frame 111 and a second mounting frame 112, the first mounting frame 111 and the second mounting frame 112 are arranged in a spaced manner, the two driving wheels 21 of the driving assembly 2 are arranged on the first mounting frame 111 and the second mounting frame 112, and the fixed part 12 is connected to the first mounting frame 111. By adjusting the interval between the first mounting frame 111 and the second mounting frame 112, the interval between the two driving wheels 21 can be adjusted, thereby facilitating the disassembly and assembly of the finger sleeve 200 on the finger sleeve automatic plugging device 100 of the present embodiment, and facilitating the plugging operation of finger sleeves of different sizes, thereby improving the universality of the present application.

[0047] Optionally, the rack 1 further comprises a first locking rod 13 and a first locking part 14, the first locking rod 13 is arranged on the first mounting frame 111 and penetrates the second mounting frame 112 along the axial direction of the two driving wheels 21; the first locking part 14 is arranged on the side of the second mounting frame 112 away from the first mounting frame 111 and is threadedly connected with the first locking rod 13. By rotating the locking part, the interval between the second mounting frame 112 and the first mounting frame 111 and the two driving wheels 21 can be changed and maintained, thereby stabilizing the pressing force of the driving assembly 2 on the finger sleeve 200, and reducing the possibility of bending of the finger sleeve 200 during plugging.

[0048] Optionally, the frame 1 further comprises a guide rod 15 and a first compression spring 16, the guide rod 15 is arranged on the first mounting frame 111 along the direction of the axis distance between the two driving wheels 21, and is slidably connected with the second mounting frame 112, the first compression spring 16 is sleeved on the guide rod 15 and arranged between the first mounting frame 111 and the second mounting frame 112. The guide rod 15 and the first compression spring 16 limit the posture of the second mounting frame 112 when it approaches or moves away from the first mounting frame 111, so that the distance between the first mounting frame 111 and the second mounting frame 112 is uniform, thereby ensuring that the clamping force of the driving assembly 2 on the finger sleeve 200 is stable and uniform, which is conducive to reducing the possibility of bending of the finger sleeve 200 during insertion and extraction. In addition, after the insertion and extraction work of the finger sleeve 200 is completed, the first locking member 14 is loosened, and under the action of the first compression spring 16, the first mounting frame 111 and the second mounting frame 112 can be naturally separated, which is convenient for disassembling the finger sleeve 200 from the finger sleeve 200 insertion and extraction device, and is conducive to simplifying the work process.

[0049] Optionally, the finger sleeve 200 automatic insertion and extraction equipment further comprises a guide assembly 3, which is arranged on both sides of the driving assembly 2 along the normal direction of the plane where the axis of the two driving wheels 21 is located, and the guide assembly 3 is provided with a guide hole 31 or a guide groove 32, which is arranged corresponding to the gap between the two driving wheels 21. In practice, the finger sleeve 200 is arranged in the guide hole 31 or the guide groove 32. The guide assembly 3 can limit the flexural deformation and radial vibration of the part of the finger sleeve 200 that is not clamped by the driving assembly 2, and avoid the axial instability of the finger sleeve 200 leading to damage. As mentioned above, the resistance encountered by the finger sleeve 200 during insertion into the guide tube 300 is not uniform, and this uneven resistance may cause the finger sleeve 200 to vibrate radially, resulting in the direction of the driving force not being in the same straight line as the axial direction of the finger sleeve 200, thereby causing the guide tube 300 to bend. The guide assembly 3 can constrain the radial displacement of the guide tube 300, thereby reducing the possibility of bending of the finger sleeve 200 during insertion and extraction.

[0050] Optionally, the fixing part 12 comprises a clamp 121 for clamping the guide tube 300 to fix the finger sleeve automatic plug-pull device 100, the clamp 121 comprises a first clamping part 1211, a second clamping part 1212, a second locking rod 1213 and a second locking piece 1214, the second clamping part 1212 is hinged to the first clamping part 1211, and the hinge shaft is parallel to the guide tube 300; the second locking rod 1213 is hinged to the first clamping part 1211, and the end is lapped on the second clamping part 1212; the second locking piece 1214 is arranged on the side of the second clamping part 1212 away from the first clamping part 1211, and is threadedly connected with the second locking rod 1213. The clamp 121 is beneficial to fixing the finger sleeve automatic plug-pull device 100 of the embodiment by the guide tube 300, without the need to arrange additional structures or devices in the working environment for the finger sleeve automatic plug-pull device 100 of the embodiment, and the volume is small, the structure is compact, and the user is convenient to operate.

[0051] Optionally, the finger sleeve automatic plug-pull device further comprises a first sensor 17 arranged at the connection between the fixing part 12 and the main body part 11, and the first sensor 17 is used to obtain the acting force between the main body part 11 and the fixing part 12. When the finger sleeve 200 is plugged, the tension or pressure between the main body part 11 and the fixing part 12 is equal to the friction between the finger sleeve 200 and the guide tube 300, and the arrangement of the first sensor 17 can monitor the friction between the finger sleeve 200 and the guide tube 300, and guide the operation of the user. The first sensor 17 can also be connected with the driving element such as the motor 22 to form a closed loop control, so that the torque output by the motor 22 matches the real-time resistance of the movement of the finger sleeve 200.

[0052] Optionally, the finger sleeve automatic plug-pull device further comprises a displacement measurement assembly 4 arranged on the rack 1, and the displacement measurement assembly 4 comprises a friction wheel 41 and a second sensor 42, the axial direction of the friction wheel 41 is parallel to the axial direction of the driving wheel 21, the friction wheel 41 is arranged corresponding to the gap between the two driving wheels 21, and the second sensor 42 is connected to the friction wheel 41, and the second sensor 42 is used to obtain the angular displacement of the friction wheel 41. When the finger sleeve automatic plug-pull device 100 of the embodiment is used, the surface of the friction wheel 41 is attached to the finger sleeve 200, and when the finger sleeve 200 moves along the axial direction thereof, the friction wheel 41 is driven to rotate. Since the diameter of the friction wheel 41 is known, the angular displacement of the friction wheel 41 obtained by the second sensor 42 can obtain the displacement of the finger sleeve 200, and the time can obtain the speed, acceleration and other movement information of the finger sleeve 200, which can guide the operation of the user. The second sensor 42 can also be connected with the driving element such as the motor 22 to form a closed loop control, so as to adjust the rotating speed of the motor 22 to make the plug-pull speed of the finger sleeve 200 uniform.

[0053] Optionally, the displacement measuring assembly 4 further comprises a sliding block 43 and a second compression spring 44, the friction wheel 41 and the sensor are arranged on the sliding block 43, the sliding block 43 is slidably connected to the main body 11 along the thickness direction of the main body 11; the second compression spring 44 is arranged on the side of the sliding block 43 away from the gap between the two driving wheels 21 along the axial distance direction of the two driving wheels 21, and is connected to the main body 11. In practice, after the finger sleeve 200 is installed, the sliding block 43 is displaced away from the finger sleeve 200 and drives the second compression spring 44 to be compressed, under the elastic force of the second compression spring 44, the friction wheel 41 can always be close to the finger sleeve 200, avoiding relative sliding between the friction wheel 41 and the finger sleeve 200, which is conducive to the accuracy of the friction wheel 41 and the second sensor 42 feedbacking the motion information of the finger sleeve 200.

[0054] The use method of the finger sleeve automatic plugging device is briefly described below.

[0055] S1: use the clamp 121 to fix the finger sleeve automatic plugging device 100 at the end of the guide pipe 300, and loosen the first locking piece 14;

[0056] S2: pass the finger sleeve 200 through the guide assembly 3, the displacement measuring assembly 4 and the driving assembly 2;

[0057] S3: tighten the first locking piece 14, and confirm that the driving assembly 2 and the friction wheel 41 are in good contact with the finger sleeve 200;

[0058] S4: start the finger sleeve automatic plugging device 100 until the finger sleeve 200 is inserted or pulled out by a predetermined length;

[0059] S5: loosen the first locking piece 14, release the clamp 121, and disassemble and arrange the finger sleeve automatic plugging device 100.

[0060] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application.

[0061] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Thus, it is intended that the present application embrace all such modifications and changes and, accordingly, the appended claims are intended to cover all such modifications and changes as fall within the scope of the application.

Claims

1. A finger cot automatic plug device characterized by, The utility model relates to a kind of automatic insertion and extraction device of finger sleeve pipe, including: Rack, the rack includes main body part and fixed part, the fixed part is connected to the main body part, and the fixed part is used to fix the main body part; Driving assembly, the driving assembly is arranged in the main body part, and the driving assembly includes driving wheel group, and the driving wheel group includes two driving wheels, two driving wheels are spaced apart and axially parallel, and two driving wheels are coupled connection;The main body part includes first mounting bracket and second mounting bracket, the first mounting bracket and the second mounting bracket are spaced apart, and two driving wheels of the driving assembly are respectively arranged in the first mounting bracket and the second mounting bracket, and the fixed part is connected to the first mounting bracket;The rack further includes first locking rod, first locking piece, the first locking rod is arranged in the first mounting bracket, and along the axis distance direction of two driving wheels, penetrates the second mounting bracket;The first locking piece is arranged on the side of the second mounting bracket away from the first mounting bracket, and is threadedly connected with the first locking rod;The rack further includes guide rod and first compression spring, the guide rod is arranged in the first mounting bracket along the axis distance direction of two driving wheels, and is slidably connected with the second mounting bracket, and the first compression spring is sleeved on the guide rod and is arranged between the first mounting bracket and the second mounting bracket; Displacement measurement assembly, the displacement measurement assembly is arranged in the rack, and the displacement measurement assembly includes friction wheel and second sensor, and the axial direction of the friction wheel is parallel to the driving wheel axial direction, and the friction wheel is arranged corresponding to the gap between two driving wheels, and the second sensor is connected to the friction wheel, and the second sensor is used to obtain the angular displacement of the friction wheel.

2. The finger cot automatic insertion and extraction device according to claim 1, characterized in that, The driving assembly further includes driven wheel group, and the driven wheel group is spaced apart from the driving wheel group along the length direction of the main body part, and the driven wheel group includes two driven wheels, and two driven wheels are respectively connected with adjacent driving wheel through synchronous belt, and two synchronous belts are parallel to two sides.

3. The automatic insertion and extraction device for a finger cot tube according to claim 1, characterized by Further including guide assembly, the guide assembly is arranged on both sides of the driving assembly along the normal of the plane where the axis of two driving wheels is, and the guide assembly is provided with guide hole or guide slot, and the guide hole or guide slot is arranged corresponding to the gap between two driving wheels.

4. The automatic insertion and extraction device for a finger cot tube according to claim 1, characterized by The fixed part includes clamp, the clamp is used to hold guide pipe to fix the automatic insertion and extraction device of finger sleeve pipe, and the clamp includes first clamping part, second clamping part, second locking rod and second locking piece, the second clamping part is hinged to the first clamping part, and the hinge shaft is parallel to the guide pipe;The second locking rod is hinged to the first clamping part, and the end portion is lapped on the second clamping part;The second locking piece is arranged on the side of the second clamping part away from the first clamping part, and is threadedly connected with the second locking rod.

5. The automatic insertion and extraction device for a finger cot tube according to claim 1, wherein Further including first sensor, the first sensor is arranged at the junction of the fixed part and the main body part, and the first sensor is used to obtain the acting force between the main body part and the fixed part.

6. The automatic insertion and extraction device for a finger cot tube according to claim 1, wherein The displacement measuring assembly further comprises a slider and a second compression spring, the friction wheel and the sensor are arranged on the slider, the slider is slidably connected to the main body in the direction of the axis distance between the two drive wheels; the second compression spring is arranged on the side of the slider away from the gap between the two drive wheels in the direction of the axis distance between the two drive wheels, and is connected to the main body.

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