Automatic insertion and extraction device for finger sleeve

Abstract

The invention discloses a finger sleeve pipe brake plugging device which is characterized in that a rack provided with a main body part and a fixing part is arranged, a driving assembly is arranged on the main body part, the fixing part is used for fixing the main body part, the driving assembly comprises two driving wheels, and a finger sleeve pipe is installed between the two driving wheels during use; the two driving wheels rotate to drive the finger sleeve to be inserted and pulled out of the guide pipe at a preset speed. In the process, the fixing part enables the finger sleeve pipe inserting and pulling equipment to be stable, so that the acting force of the driving wheel on the finger sleeve pipe in the finger sleeve pipe inserting and pulling process always stably acts in the axial direction of the finger sleeve pipe, the finger sleeve pipe is prevented from being bent by the acting force in other directions, and the purpose of preventing the finger sleeve pipe from being damaged in the inserting and pulling process is achieved.

Description

Technical Field

[0001] The invention relates to the field of nuclear power equipment, and in particular to an automatic insertion and extraction device for a finger sleeve. Background Art

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

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

[0004] Due to the tight connection between the finger sleeve and the guide tube and the slender structure of the finger sleeve itself, it is easy to bend during the insertion and removal process. In particular, in the prior art, the insertion and removal of the finger sleeve is done manually, which requires high work experience and teamwork level of the personnel. When the finger sleeve is inserted back into the fixed tube, the output of the working group members is not stable enough, which can easily bend and damage the finger sleeve, resulting in low work efficiency. In addition, once an error occurs during the reinsertion process, it is easy to cause the finger sleeve to deform or bend, resulting in the inability of the neutron detector to pass through. The channel needs to be locked and the finger sleeve needs to be replaced later, which undoubtedly increases the duration of the refueling overhaul and increases the overall radiation dose rate of the working group. Summary of the invention

[0005] The automatic finger sleeve insertion and extraction device of the present invention is used to solve the problem that the finger sleeve is easily bent and damaged during the insertion and extraction process, and can insert and extract the finger sleeve from the guide tube with a uniform and stable force to prevent the finger sleeve from being damaged during the insertion and extraction process.

[0006] To achieve the above object, the present invention provides a finger sleeve automatic insertion and extraction device, comprising:

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

[0008] A driving assembly is arranged on the main body, and the driving assembly includes a driving wheel group, and the driving wheel group includes two driving wheels, the two driving wheels are arranged at an interval and are axially parallel, and the two driving wheels are coupled and connected. When the automatic insertion and extraction device of the finger sleeve of the present invention is in use, the finger sleeve is installed between the two driving wheels, the outer peripheral surfaces of the two driving wheels are in contact with the finger sleeve, and the frame is fixed by the fixing part, so that the automatic insertion and extraction device of the finger sleeve is stable, and the two driving wheels rotate to drive the finger sleeve to move, so as to realize the automatic insertion and extraction of the finger sleeve. When the finger sleeve is inserted and extracted, the fixing part stabilizes the insertion and extraction device of the finger sleeve, so that the force of the driving wheel on the finger sleeve during the insertion and extraction of the finger sleeve always stably works along the axial direction of the finger sleeve, avoiding the bending of the finger sleeve by the force in other directions, so as to prevent the finger sleeve from being damaged during the insertion and extraction process, which is conducive to improving the efficiency of the insertion and extraction of the finger sleeve, reducing the working time of the material replacement overhaul, and reducing the overall radiation dose rate of the working group members.

[0009] As an optional technical solution, the driving assembly further includes a driven wheel group, which is spaced apart from the driving wheel group along the length direction of the main body, and the driven wheel group includes two driven wheels, which are respectively connected to the adjacent driving wheels through a synchronous belt, and the two synchronous belts are parallel to each other. When the automatic insertion and extraction device of the finger sleeve of the present technical solution is used, the two parallel sides of the two synchronous belts clamp the finger sleeve, and the driving wheel rotates to drive the synchronous belt, thereby driving the finger sleeve to move along its own axis to achieve automatic insertion and extraction of the finger sleeve. The provision of a synchronous belt can increase the contact area between the driving assembly and the finger sleeve, thereby allowing the friction and driving effect of the driving assembly on the finger sleeve to be increased without changing the strength of the finger sleeve, thereby improving the efficiency of the insertion and extraction of the finger sleeve. 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 when the finger sleeve is inserted and extracted.

[0010] As an optional technical solution, the main body includes a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are arranged at an interval, the two driving wheels of the driving assembly are respectively arranged on the first mounting frame and the second mounting frame, and the fixing part is connected to the first mounting frame. By adjusting the interval between the first mounting frame and the second mounting member, the interval between the two driving wheels can be adjusted, thereby facilitating the disassembly and assembly of the finger sleeve on the finger sleeve automatic insertion and extraction device of the technical solution, and facilitating the insertion and extraction of finger sleeves of different sizes, thereby improving the versatility of the application.

[0011] As an optional technical solution, the frame further includes a first locking rod and a first locking member, wherein the first locking rod is arranged on the first mounting frame and penetrates the second mounting frame along the wheelbase direction of the two driving wheels; the first locking member is arranged on the side of the second mounting frame away from the first mounting frame and is threadedly connected to the first locking rod. By rotating the locking member, the spacing between the second mounting frame and the first mounting frame and between the two driving wheels can be changed and maintained, so that the pressing force of the driving assembly on the finger sleeve is stable, which is conducive to reducing the possibility of bending of the finger sleeve when inserting and removing.

[0012] As an optional technical solution, the frame further includes a guide rod and a first compression spring. The guide rod is arranged on the first mounting frame along the wheelbase direction of the two driving wheels and is slidably connected to the second mounting frame. The first compression spring is sleeved on the guide rod and 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 spacing between the first mounting frame and the second mounting frame is uniform, thereby ensuring that the clamping force of the drive component on the finger sleeve is stable and uniform, which is conducive to reducing the possibility of bending when the finger sleeve is inserted and removed. In addition, after the insertion and removal of the finger sleeve is completed, the first locking member is loosened. Under the action of the first compression spring, the first mounting frame and the second mounting frame can be naturally separated, which is convenient for the removal of the finger sleeve from the finger sleeve insertion and removal device, which is conducive to simplifying the work process.

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

[0014] As an optional technical solution, the fixing part includes a clamp, and the clamp is used to clamp the guide tube to fix the automatic insertion and extraction device of the finger sleeve. The clamp includes 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 axis is parallel to the guide tube; the second locking rod is hinged to the first clamping part, and the end is overlapped with 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 facilitates the guide tube to fix the automatic insertion and extraction device of the finger sleeve of the technical solution, and does not need to arrange additional structures or devices in the working environment for the automatic insertion and extraction device of the finger sleeve of the technical solution, and has a small size and a compact structure, which is convenient for users to operate.

[0015] As an optional technical solution, the automatic insertion and extraction device for the finger sleeve further includes a first sensor, which is arranged at the connection between the fixing part and the main body, and is used to obtain the force between the main body and the fixing part. When the finger sleeve is inserted or extracted, the pulling force or pressure between the main body and the fixing part is equal to the friction force between the finger sleeve and the guide tube. The first sensor can monitor the friction force between the finger sleeve and the guide tube, and guide the user's operation.

[0016] As an optional technical solution, the automatic insertion and extraction device for the finger sleeve also includes a displacement measuring component, which is arranged on the frame. The displacement measuring component includes 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 obtain the angular displacement of the friction wheel. When the automatic insertion and extraction device for the finger sleeve of the present technical solution is used, the surface of the friction wheel fits the finger sleeve. When the finger sleeve moves along its own axial direction, it will drive the friction wheel to rotate. Since the diameter of the friction wheel is known, the second sensor obtains the angular displacement of the friction wheel to obtain the displacement of the finger sleeve. Combined with the time, the speed, acceleration and other motion information of the finger sleeve can be obtained, which plays a guiding role in the user's operation.

[0017] As an optional technical solution, the displacement measurement assembly further includes a slider and a second compression spring, the friction wheel and the sensor are arranged on the slider, and the slider is slidably connected to the main body along the thickness direction of the main body; the second compression spring is arranged on the side of the slider away from the gap between the two driving wheels along the wheelbase direction of the two driving wheels, and is connected to the main body. In practice, after the finger sleeve is installed, the slider moves away from the finger sleeve and drives the second compression spring to compress. Under the elastic force of the second compression spring, the friction wheel can always be close to the finger sleeve, avoiding relative sliding between the friction wheel and the finger sleeve, which is beneficial to the accuracy of the feedback of the finger sleeve movement information by the friction wheel and the second sensor.

[0018] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0019] 1. The finger sleeve brake plugging and unplugging device of the present invention is provided with a frame having a main body and a fixing part, and a driving assembly is provided on the main body, wherein the fixing part is used to fix the main body, and the driving assembly includes two driving wheels, and when in use, the finger sleeve is installed between the two driving wheels, and the two driving wheels rotate to drive the finger sleeve to be plugged and unplugged from the guide tube at a predetermined speed. During the process, the fixing part stabilizes the finger sleeve plugging and unplugging device, so that the force of the driving wheel on the finger sleeve during the finger sleeve plugging and unplugging process always stably works along the axial direction of the finger sleeve, avoiding the bending of the finger sleeve by forces in other directions, so as to achieve the purpose of preventing the finger sleeve from being damaged during the plugging and unplugging process;

[0020] 2. The finger sleeve brake plugging and unplugging device of the present invention can apply a relatively uniform driving force to realize automatic plugging and unplugging of the finger sleeve, which is helpful to prevent the finger sleeve from being damaged during the plugging and unplugging process;

[0021] 3. The finger sleeve brake plugging and unplugging device of the present invention has high working efficiency, which is beneficial to reducing the working time of material replacement overhaul and reducing the overall radiation dose rate of working group members. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 is a schematic diagram of the automatic insertion and extraction device for the middle finger cannula of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the automatic insertion and extraction device for finger sleeves in which the main body is omitted;

[0025] Description of reference numerals:

[0026] Finger sleeve automatic insertion and extraction device-100; finger sleeve-200; guide tube-300;

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

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

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

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

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the present invention, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection, it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to 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, "plurality" means two or more.

[0034] In the field of nuclear power, the finger sleeve is an important component, also known as the "core neutron flux sleeve", which is mainly used to provide a measurement 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 tightly combined with the guide tube. During the refueling of the reactor, the finger sleeve needs to be pulled out from a given core height to the bottom of the core to avoid interfering with the loading and unloading of the fuel assembly. The finger sleeve is reinserted after the refueling is completed. The inner diameter of the finger sleeve is usually only about 5mm, which is much smaller than its own length. In the process of inserting the finger sleeve into the guide tube, it is not only very easy to bend and cause bending damage, but also because the maximum static friction is usually greater than the sliding friction, when the operator tries to insert the finger sleeve at a uniform speed, the finger sleeve may not move at a uniform speed, but switch repeatedly and unstably between a lower speed and a higher speed. In particular, the insertion and removal of the finger sleeve needs to be completed by multiple members of the working group. It is difficult to adjust the output in time to match the resistance of the finger sleeve movement, which makes it easier for the members of the working group to have an uneven output, increasing the risk of damage to the finger sleeve.

[0035] Based on this, the present invention provides an automatic insertion and extraction device for a finger sleeve, which is provided with a frame having a main body and a fixing part, and a driving assembly is provided on the main body, wherein the fixing part is used to fix the main body, and the driving assembly includes two driving wheels, and when in use, the finger sleeve is installed between the two driving wheels, and the two driving wheels rotate to drive the finger sleeve to be inserted and extracted from the guide tube at a predetermined speed. During the process, the fixing part stabilizes the insertion and extraction device of the finger sleeve, so that the force of the driving wheel on the finger sleeve during the insertion and extraction of the finger sleeve always stably works along the axial direction of the finger sleeve, avoiding the bending of the finger sleeve caused by the force in other directions, so as to achieve the purpose of preventing the finger sleeve from being damaged during the insertion and extraction process.

[0036] The technical solution of the present invention will be described in detail below in conjunction with embodiments and drawings.

[0037] Embodiment 1

[0038] See also Figure 1 and Figure 2 This embodiment provides a finger sleeve automatic insertion and extraction device 100, comprising:

[0039] The frame 1 includes a main body 11 and a fixing portion 12. The fixing portion 12 is connected to the main body 11 and is used to fix the main body 11.

[0040] The driving assembly 2 is arranged on the main body 11. The driving assembly 2 includes a driving wheel 21 group. The driving wheel 21 group includes two driving wheels 21. The two driving wheels 21 are arranged at an interval and are axially parallel. The two driving wheels 21 are coupled and connected. When the automatic insertion and extraction device 100 of the finger cannula of the present invention is used, the finger cannula 200 is installed between the two driving wheels 21. The outer circumferences of the two driving wheels 21 are in contact with the finger cannula 200. The frame 1 is fixed by the fixing part 12, so that the automatic insertion and extraction device 100 of the finger cannula is stable. The two driving wheels 21 rotate to drive the finger cannula 200 to move at a predetermined speed, thereby realizing the automatic insertion and extraction of the finger cannula 200. When the finger cannula 200 is plugged in or out, the fixing part 12 stabilizes the plugging and unplugging device of the finger cannula 200, so that the force of the driving wheel 21 on the finger cannula 200 during the plugging and unplugging process is always stably applied along the axial direction of the finger cannula 200, avoiding bending of the finger cannula 200 due to forces in other directions, thereby preventing the finger cannula 200 from being damaged during the plugging and unplugging process, which is beneficial to improving the efficiency of the plugging and unplugging work of the finger cannula, reducing the working time of the refueling overhaul, and reducing the overall radiation dose rate of the working group members.

[0041] 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. Alternatively, the two driving wheels 21 can be connected to a motor 22 respectively, and the two motors 22 drive the two driving wheels 21 at the same speed and opposite directions. It should be noted that heat dissipation measures should be set when using the motor 22, such as Figure 1 As shown, the frame 1 is provided with a plurality of heat dissipation holes corresponding to the motor 22 .

[0042] In addition, in order to maintain the stability of the insertion and extraction speed of the finger tube 200, a sensor can be set to detect the insertion and extraction speed of the finger tube 200, the output torque of the driving wheel 21, and / or the resistance of the finger tube 200 in real time, and the sensor can be connected to the driving element such as the motor 22 to form a closed-loop control.

[0043] Embodiment 2

[0044] On the basis of the first embodiment, the driving assembly 2 further includes a driven wheel 23 group, which is spaced apart from the driving wheel 21 group along the length direction of the main body 11, and includes two driven wheels 23, which are respectively connected to adjacent driving wheels 21 through a synchronous belt 24, and the two synchronous belts 24 are parallel to each other. When the finger sleeve automatic insertion and extraction device 100 of this embodiment is used, the two parallel surfaces of the two synchronous belts 24 clamp the finger sleeve 200, and the driving wheel 21 rotates to drive the synchronous belt 24, thereby driving the finger sleeve 200 to move along its own axis, thereby realizing the automatic insertion and extraction of the finger sleeve 200. The synchronous belt 24 can increase the contact area between the drive assembly 2 and the finger sleeve 200, thereby increasing the friction and driving effect of the drive assembly 2 on the finger sleeve 200 without changing the strength of the finger sleeve 200, thereby improving the efficiency of plugging and unplugging the finger sleeve 200. At the same time, the synchronous belt 24 can also stabilize the force between the finger sleeve 200 and the drive assembly 2, and make the force distribution of the drive assembly 2 on the finger sleeve 200 more uniform, thereby reducing the possibility of bending of the finger sleeve 200 when plugging and unplugging.

[0045] In addition, multiple sets of driving wheels 21 and driven wheels 23 may also be provided, and two or more pairs of synchronous belts 24 may be used on both sides of the finger sleeve 200 to clamp and drive the finger sleeve 200 .

[0046] Optionally, the main body 11 includes a first mounting frame 111 and a second mounting frame 112, the first mounting frame 111 and the second mounting frame 112 are arranged at intervals, the two driving wheels 21 of the driving assembly 2 are respectively arranged on the first mounting frame 111 and the second mounting frame 112, and the fixing portion 12 is connected to the first mounting frame 111. By adjusting the interval between the first mounting frame 111 and the second mounting member, 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 insertion and extraction device 100 of this embodiment, and facilitating the insertion and extraction of finger sleeves of different sizes, thereby improving the versatility of the present application.

[0047] Optionally, the frame 1 further comprises a first locking rod 13 and a first locking member 14. The first locking rod 13 is arranged on the first mounting frame 111 and penetrates the second mounting frame 112 along the wheelbase direction of the two driving wheels 21. The first locking member 14 is arranged on the side of the second mounting frame 112 away from the first mounting frame 111 and is threadedly connected to the first locking rod 13. By rotating the locking member, the spacing between the second mounting frame 112 and the first mounting frame 111 and between the two driving wheels 21 can be changed and maintained, so that the pressing force of the driving assembly 2 on the finger sleeve 200 is stable, which is conducive to reducing the possibility of bending of the finger sleeve 200 when plugging and unplugging.

[0048] Optionally, the frame 1 further includes a guide rod 15 and a first compression spring 16. The guide rod 15 is arranged on the first mounting frame 111 along the wheelbase direction of the two driving wheels 21 and is slidably connected to the second mounting frame 112. The first compression spring 16 is sleeved on the guide rod 15 and is 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 spacing between the first mounting frame 111 and the second mounting frame 112 is uniform, thereby ensuring that the clamping force of the driving component 2 on the finger sleeve 200 is stable and uniform, which is conducive to reducing the possibility of bending of the finger sleeve 200 when plugging and unplugging. In addition, after the plugging and unplugging 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 the finger sleeve 200 to be disassembled from the finger sleeve 200 plugging and unplugging device, which is conducive to simplifying the work process.

[0049] Optionally, the automatic insertion and extraction device of the finger sleeve 200 further includes a guide assembly 3, which is arranged on both sides of the drive assembly 2 along the normal direction of the plane where the axes of the two drive wheels 21 are located, and the guide assembly 3 is provided with a guide hole 31 or a guide groove 32, and the guide hole 31 or the guide groove 32 is arranged corresponding to the gap between the two drive wheels 21. In practice, the finger sleeve 200 is inserted into 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 drive assembly 2, and avoid the axial instability of the finger sleeve 200 and cause damage. As mentioned above, the resistance encountered by the finger sleeve 200 during the insertion of the guide tube 300 is not uniform, and this uneven resistance may cause the finger sleeve 200 to vibrate in the radial direction, resulting in the direction of the driving force being not in the same straight line with 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 when the finger sleeve 200 is inserted and extracted.

[0050] Optionally, the fixing portion 12 includes a clamp 121, which is used to clamp the guide tube 300 to fix the finger sleeve automatic insertion and extraction device 100. The clamp 121 includes a first clamping portion 1211, a second clamping portion 1212, a second locking rod 1213 and a second locking piece 1214. The second clamping portion 1212 is hinged to the first clamping portion 1211, and the hinge axis is parallel to the guide tube 300; the second locking rod 1213 is hinged to the first clamping portion 1211, and the end portion is overlapped with the second clamping portion 1212; the second locking piece 1214 is arranged on the side of the second clamping portion 1212 away from the first clamping portion 1211, and is threadedly connected to the second locking rod 1213. The clamp 121 facilitates the guide tube 300 to fix the automatic finger sleeve insertion and extraction device 100 of this embodiment, and no additional structure or device is required to be arranged in the working environment. The automatic finger sleeve insertion and extraction device 100 of this embodiment has a small size and a compact structure, which is convenient for users to operate.

[0051] Optionally, the automatic insertion and extraction device of the finger sleeve 200 further includes a first sensor 17, which is disposed at the connection between the fixing portion 12 and the main body 11, and is used to obtain the force between the main body 11 and the fixing portion 12. When the finger sleeve 200 is inserted or removed, the tension or pressure between the main body 11 and the fixing portion 12 is equal to the friction between the finger sleeve 200 and the guide tube 300. The first sensor 17 can monitor the friction between the finger sleeve 200 and the guide tube 300, and guide the user's operation. The first sensor 17 can also be connected to a driving element such as a motor 22 to form a closed-loop control, so that the output torque of the motor 22 matches the real-time resistance of the movement of the finger sleeve 200.

[0052] Optionally, the automatic insertion and extraction device of the finger sleeve 200 further includes a displacement measuring component 4, which is arranged on the frame 1. The displacement measuring component 4 includes 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. The second sensor 42 is connected to the friction wheel 41. The second sensor 42 is used to obtain the angular displacement of the friction wheel 41. When the automatic insertion and extraction device 100 of the finger sleeve of this embodiment is used, the surface of the friction wheel 41 is attached to the finger sleeve 200. When the finger sleeve 200 moves along its own axial direction, it will drive the friction wheel 41 to rotate. Since the diameter of the friction wheel 41 is known, the second sensor 42 obtains the angular displacement of the friction wheel 41 to obtain the displacement of the finger sleeve 200. Combined with the time, the movement information such as the speed and acceleration of the finger sleeve 200 can be obtained, which plays a guiding role in the user's operation. The second sensor 42 can also be connected to a driving element such as a motor 22 to form a closed-loop control, and the speed of the motor 22 is adjusted to make the insertion and extraction speed of the finger sleeve 200 uniform.

[0053] Optionally, the displacement measuring assembly 4 further includes a slider 43 and a second compression spring 44. The friction wheel 41 and the sensor are arranged on the slider 43. The slider 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 slider 43 away from the gap between the two driving wheels 21 along the wheelbase 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 slider 43 moves away from the finger sleeve 200 and drives the second compression spring 44 to compress. 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 in feedback of the movement information of the finger sleeve 200.

[0054] The following is a brief description of the method for using the finger sleeve automatic insertion and extraction device of the present invention.

[0055] S1: Use the clamp 121 to fix the finger sleeve automatic insertion and extraction device 100 to the end of the guide tube 300, and loosen the first locking member 14;

[0056] S2: passing 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 member 14 to confirm that the driving assembly 2 and the friction wheel 41 are in good contact with the finger sleeve 200;

[0058] S4: starting the finger tube automatic insertion and extraction device 100 until the finger tube 200 is inserted or extracted to a predetermined length;

[0059] S5: Loosen the first locking member 14, release the lock of the clamp 121, and disassemble and tidy up the automatic finger sleeve insertion and extraction device 100.

[0060] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0061] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A finger sleeve automatic insertion and extraction device, characterized in that: include: A frame, the frame comprising a main body and a fixing portion, the fixing portion being connected to the main body and used to fix the main body; A driving assembly is arranged on the main body, the driving assembly includes a driving wheel set, the driving wheel set includes two driving wheels, the two driving wheels are arranged at an interval and are axially parallel, and the two driving wheels are coupled and connected.

2. The automatic insertion and extraction device for finger sleeves according to claim 1, characterized in that: The driving assembly also includes a driven wheel group, which is spaced apart from the driving wheel group along the length direction of the main body. The driven wheel group includes two driven wheels, and the two driven wheels are respectively connected to adjacent driving wheels through synchronous belts, and the two synchronous belts are parallel to each other.

3. The automatic insertion and extraction device for finger sleeves according to claim 1, characterized in that: The main body includes a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are arranged at an interval, the two driving wheels of the driving component are respectively arranged on the first mounting frame and the second mounting frame, and the fixing part is connected to the first mounting frame.

4. The automatic insertion and extraction device for finger sleeves according to claim 3, characterized in that: The frame also includes a first locking rod and a first locking member. The first locking rod is arranged on the first mounting frame and passes through the second mounting frame along the wheelbase direction of the two driving wheels. The first locking member is arranged on a side of the second mounting frame away from the first mounting frame and is threadedly connected to the first locking rod.

5. The automatic insertion and extraction device for finger sleeves according to claim 4, characterized in that: The frame also includes a guide rod and a first compression spring. The guide rod is arranged on the first mounting frame along the wheelbase direction of the two driving wheels and is slidably connected to 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.

6. The automatic insertion and extraction device for finger sleeves according to claim 1, characterized in that: It also includes a guide component, which is arranged on both sides of the drive component along the normal of the plane where the two drive wheel axes are located. The guide component is provided with a guide hole or a guide groove, and the guide hole or guide groove is arranged corresponding to the gap between the two drive wheels.

7. The automatic insertion and extraction device for finger sleeves according to claim 1, characterized in that: The fixing portion includes a clamp, which is used to clamp the guide tube to fix the automatic finger sleeve insertion and extraction device. The clamp includes a first clamping portion, a second clamping portion, a second locking rod and a second locking piece. The second clamping portion is hinged to the first clamping portion, and the hinge axis is parallel to the guide tube; the second locking rod is hinged to the first clamping portion, and the end portion overlaps the second clamping portion; the second locking piece is arranged on a side of the second clamping portion away from the first clamping portion, and is threadedly connected to the second locking rod.

8. The automatic insertion and extraction device for finger sleeves according to claim 1, characterized in that: It also includes a first sensor, which is arranged at the connection between the fixing part and the main body, and is used to obtain the force between the main body and the fixing part.

9. The automatic insertion and extraction device for finger sleeves according to claim 1, characterized in that: It also includes a displacement measuring component, which is arranged on the frame. The displacement measuring component includes 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 is used to obtain the angular displacement of the friction wheel.

10. The automatic insertion and extraction device for finger sleeves according to claim 9, characterized in that: The displacement measuring assembly also includes 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 along the wheelbase direction of the two driving wheels. The second compression spring is arranged on the side of the slider away from the gap between the two driving wheels along the wheelbase direction of the two driving wheels, and is connected to the main body.

Images