A long tube inner wall micro sensor sticking device and a method thereof

Abstract

This invention discloses a device and method for attaching a miniature sensor to the inner wall of a long tube, addressing the problems of difficulty in installing miniature sensors deep within long tubes, inaccurate positioning, and unreliable attachment in existing methods. Specifically, it includes a main clamping plate and a secondary clamping plate, both elongated strips. The main and secondary clamping plates are inserted into the long tube to be attached, arranged parallel to each other, and connected by two clamping bolts at their respective ends, forming a clamping space between them. This space is used to clamp the upper end of the sensor to be attached, while the lower end remains to be attached to the inner wall of the long tube. The length of both the main and secondary clamping plates is greater than the length of the long tube, and their width is less than the inner diameter of the long tube. A V-shaped groove or an arc groove is provided at the upper end of a fixing base along its length. Two fixing bolts are distributed at both ends of the main or secondary clamping plates, passing from top to bottom through the upper end of the main or secondary clamping plates, and are detachably connected to the fixing base.

Description

Technical Field

[0001] This invention relates to a device and method for attaching micro-miniature sensors, specifically to a device and method for attaching micro-miniature sensors to the inner wall of a long tube. Background Technology

[0002] Due to their small size and ease of installation, miniature sensors have important applications in many aspects of the national economy. In particular, some mechanical sensors, such as acceleration, velocity, displacement or strain sensors, can realize the monitoring of structural stress state, the monitoring of object motion speed and the measurement of structural stress deformation process, and play an indispensable role in the life monitoring of large projects such as bridges, speed control of vehicles and collision safety protection.

[0003] When using these miniature sensors, accurate installation determines whether the sensor functions correctly. Due to their small size and light weight, miniature sensors are not designed with mounting fixtures (such as threaded holes) and can generally be fixed by adhesive bonding. Long pipe structures are commonly used in the national economy. Sometimes, due to space limitations, it is necessary to adhesive bonding of miniature sensors to the inner wall of long pipes. How to accurately adhesive bonding of miniature sensors to the inner wall of long pipes with limited operating space presents the following challenges:

[0004] (1) The long tube has a large length-to-diameter ratio, usually with a length greater than 700ml and an inner diameter less than 50ml. The internal operating space is limited, and the micro-sensor is pasted to a large depth. Traditional methods make it difficult to paste the micro-sensor deep into the long tube, and the installation position cannot be accurately positioned.

[0005] (2) The small size of the micro-sensors makes them difficult to hold during the pasting process, and the sensors cannot be accurately positioned and reliably bonded.

[0006] (3) Existing technologies can generally only achieve the pasting of a single sensor, resulting in low pasting efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide a device and method for attaching micro-sized sensors to the inner wall of a long tube, so as to solve the technical problems of existing micro-sized sensor attachment methods that are difficult to install deep into long tubes, have inaccurate positioning, are unreliable, and have low attachment efficiency.

[0008] To achieve the above objectives, the present invention provides a micro-sensor bonding device for the inner wall of a long tube, which is characterized by comprising a main clamping plate, a secondary clamping plate, a fixing base, and two fixing bolts, all of which are long strips.

[0009] The main clamping plate and the auxiliary clamping plate are used to pass through the long tube of the object to be pasted. They are arranged parallel to each other and connected by two clamping plate set bolts at each end. A clamping space with a length equal to the length of the long tube is formed between the main clamping plate, the auxiliary clamping plate, and the two clamping plate set bolts. This space is used to clamp the upper end of the sensor to be pasted, while the lower end of the sensor is left to be pasted onto the inner wall of the long tube. The length of both the main clamping plate and the auxiliary clamping plate is greater than the length of the long tube, and the width of both is less than the inner diameter of the long tube.

[0010] The upper end of the fixed base is provided with a V-shaped groove or an arc groove along its length for placing the long tube;

[0011] The two fixing bolts are distributed at both ends of the main clamping plate or the auxiliary clamping plate, and pass through from top to bottom from the upper end of the main clamping plate or the auxiliary clamping plate, and are detachably connected to the fixing base.

[0012] Furthermore, it also includes a tightening and loosening mechanism located in the middle of the main clamping plate and the auxiliary clamping plate. The middle tightening and loosening mechanism includes a middle tightening and loosening pin, a wedge pin, and a rotation control lever.

[0013] The main clamping plate and the auxiliary clamping plate are provided with corresponding locking holes in the middle; at least one boss is distributed along the length direction on the side wall of the auxiliary clamping plate away from the main clamping plate; when there are multiple bosses, all bosses are located on the same side of the locking holes.

[0014] The central locking and slack pin is inserted into two locking holes, and its tail end is provided with a wedge-shaped hole along the length of the sub-clamp plate.

[0015] The rotation control rod passes through the boss, and the end of the rotation control rod near the locking hole is connected to the large end of the wedge pin by a flexible cable.

[0016] The small end of the wedge pin passes through the wedge hole.

[0017] Furthermore, the bottom of the main clamping plate and the auxiliary clamping plate is provided with at least one sensor positioning groove; and all sensor positioning grooves are located on the other side of the locking hole; the shape of the sensor positioning groove matches the shape of the sensor to be pasted.

[0018] Furthermore, the sensor positioning slot is equipped with a self-adjusting rubber support pad.

[0019] Furthermore, a T-shaped handle (82) is provided at the end of the rotation control lever away from the wedge pin.

[0020] Furthermore, two bosses are distributed on the side wall of the sub-clamp plate, one of which has a threaded hole; the other boss has a central hole; the axis of the threaded hole and the central hole are on the same straight line and are consistent with the length direction of the sub-clamp plate.

[0021] The rotation control rod passes through the threaded hole and the center hole, and the outer wall of the rotation control rod is provided with a drive thread that mates with the threaded hole.

[0022] Furthermore, the central locking and slack pin 6 has a square nail-shaped structure;

[0023] The bottom of the main clamping plate and the auxiliary clamping plate are provided with three sensor positioning slots.

[0024] The present invention also provides a method for attaching a micro-sensor to the inner wall of a long tube, using the aforementioned micro-sensor attachment device for the inner wall of a long tube, characterized by the following steps:

[0025] Step 1: Place the long tube to be pasted into the V-shaped groove or arc groove at the upper end of the fixing base;

[0026] Step 2: Clamp the upper end of the sensor to be pasted in the clamping space between the main clamping plate and the auxiliary clamping plate, and lock the main clamping plate and the auxiliary clamping plate with the clamping plate set bolts;

[0027] Step 3: Apply adhesive to the bottom of the sensor to be pasted;

[0028] Step 4: Pass the locked main clamp plate and auxiliary clamp plate, as well as the sensor to be pasted, through the long tube, with their two ends protruding from the two ends of the long tube respectively;

[0029] Step 5: Pass the two fixing bolts through the main clamping plate or the auxiliary clamping plate from top to bottom and connect them to the fixing base;

[0030] Step 6: After the adhesive has cured, remove the two fixing bolts and the two clamping bolts, and take out the main clamping plate and the auxiliary clamping plate from the long tube to complete the bonding of the micro-sensor.

[0031] Further, step 2 specifically involves clamping the upper end of at least one sensor to be pasted in the clamping space between the main clamping plate and the auxiliary clamping plate, with all sensors to be pasted located on the side of the locking hole away from the boss, and locking the main clamping plate and the auxiliary clamping plate with clamping bolts; passing the middle locking slack pin through the locking holes in the middle of the main clamping plate and the auxiliary clamping plate in sequence; inserting the small end of the wedge pin into the wedge hole, rotating the control rod, and pushing the large end of the wedge pin by rotating one end of the control rod to clamp the middle of the main clamping plate and the auxiliary clamping plate;

[0032] Step 4 specifically involves inserting the locked main clamping plate and auxiliary clamping plate, the central locking and slack pin, the wedge pin, the rotation control rod, and the sensor to be pasted into the long tube. The two ends of the main clamping plate and auxiliary clamping plate protrude from the two ends of the long tube, respectively, and the end of the rotation control rod away from the wedge pin protrudes from the long tube.

[0033] Step 6 specifically involves removing the two fixing bolts and the two clamping plate set bolts after the adhesive has cured, rotating the control lever, and using the flexible cable between the control lever and the wedge pin to pull the wedge pin, thus loosening the middle of the main clamping plate and the auxiliary clamping plate; removing the main clamping plate, the middle set loosening pin of the auxiliary clamping plate, the wedge pin, and the control lever from the long tube to complete the bonding of the micro-sensor.

[0034] The beneficial effects of this invention are:

[0035] 1. This invention features a main clamping plate and a secondary clamping plate for holding the sensor to be pasted. The main clamping plate and the secondary clamping plate are clamped together by two clamping bolts. The width of both the main clamping plate and the secondary clamping plate is smaller than the inner diameter of the long tube, allowing the main clamping plate and the secondary clamping plate to extend into the long tube with the clamped sensor to be pasted. Then, they are connected to the fixing base at the bottom of the long tube by two fixing bolts, pressing the sensor to be pasted tightly onto the inner wall of the long tube, thus achieving sensor pasting. This allows micro-sized sensors to be reliably pasted deep into the inner wall of the long tube, solving the problems of limited operating space and difficulty in pasting sensors.

[0036] 2. In addition to fastening points at the ends, the main clamping plate and auxiliary clamping plate of the present invention, i.e., the double-sided clamping plates, also have locking holes, middle locking and loosening pins and wedge pins in the middle to ensure reliable clamping in the middle of the main clamping plate and auxiliary clamping plate, so as to achieve middle fastening. The loosening and clamping of the middle fastening point can be controlled at the ends by rotating the control rod, which can realize the loosening and removal of the double-sided clamping plates after they are inserted into the long tube, and complete the pasting of the sensor deep in the long tube, solving the problem that it is difficult to accurately position and paste the sensor in the limited space deep in the long tube.

[0037] 3. The main clamping plate and the auxiliary clamping plate of the present invention are provided with sensor positioning grooves at the bottom. Multiple sensors to be pasted can be arranged along the sensor positioning grooves as needed. The sensor positioning grooves are provided with self-adjusting rubber support pads. Through multiple fastening points, multiple sensors can be accurately positioned and reliably clamped along the axial direction of the long tube, resulting in high pasting efficiency.

[0038] 4. The fixing base of the present invention is provided with a V-shaped groove or a circular arc groove. The triangular support fixing can not only ensure the stability of the long tube, but also be applicable to long tubes of different diameters. With the clamping bolts and fixing bolts on the main clamping plate and the auxiliary clamping plate, the clamping plate is reliably fixed and held until the adhesive cures, and the sensor is reliably pasted. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of an embodiment of a micro-sensor bonding device for the inner wall of a long tube according to the present invention (showing a half-section of the long tube);

[0040] Figure 2 This is an exploded view of an embodiment of a micro-sensor bonding device for the inner wall of a long tube according to the present invention;

[0041] Figure 3 This is a schematic diagram of the end face of an embodiment of a micro-sensor bonding device for the inner wall of a long tube according to the present invention;

[0042] Figure 4 This is a side view of an embodiment of a micro-sensor bonding device for the inner wall of a long tube according to the present invention;

[0043] Figure 5 This is a partial cross-sectional view of the central tightening and loosening mechanism in an embodiment of the present invention.

[0044] Icon labels:

[0045] 1-Long tube, 2-Sensor to be pasted, 3-Main clamping plate, 4-Secondary clamping plate, 5-Clamping plate set bolt, 6-Central set loosening pin, 7-Wedge pin, 8-Rotation control lever, 9-Fixed base, 10-Fixed bolt, 11-Self-adjusting rubber support pad, 41-Boss, 61-Wedge hole, 81-Drive thread, 82-T-shaped handle. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] This invention provides a micro-sensor bonding device for the inner wall of a long tube, used to bond a sensor 2 to the inner wall of a long tube 1, typically longer than 700 ml and with an inner diameter less than 50 ml. Figure 1 , Figure 2 As shown, the adhesive device includes a main clamping plate 3, a secondary clamping plate 4, clamping plate locking bolts 5, a central locking / relaxing pin 6, a wedge pin 7, a rotation control rod 8, a fixed base 9, a fixing bolt 10, and a self-adjusting rubber support pad 11. The central locking / relaxing pin 6, the wedge pin 7, and the rotation control rod 8 form a locking / relaxing mechanism.

[0048] The bottom of the main clamping plate 3 is provided with three sensor positioning slots. The number of sensor positioning slots can be set as needed, but there are three in this embodiment. In addition, the position of the sensor positioning slots can also be arranged as needed, but they must all be set on the side away from the locking hole and the boss. Each sensor positioning slot is also attached with a self-adjusting rubber support pad 11, which forms a groove structure with the auxiliary clamping plate 4 to hold the sensor 2 to be attached, so as to adapt to sensors of different sizes. The main clamping plate 3 and the auxiliary clamping plate 4 are of the same length and are provided with fastening structures at both ends, which are fastened by clamping plate fastening bolts 5. The clamping space formed between the main clamping plate 3 and the auxiliary clamping plate 4 is the same length as the long tube 1 and shorter than the length of the main clamping plate 3 and the auxiliary clamping plate 4.

[0049] The central locking and loosening pin 6 has a square nail-shaped structure with a wedge-shaped hole 61 at the bottom. It passes through the locking hole in the middle of the main clamping plate 3 and the secondary clamping plate 4 from one side of the main clamping plate 3. The wedge-shaped hole 61 protrudes from the side of the secondary clamping plate 4 away from the main clamping plate 3. The wedge-shaped hole 61 cooperates with the wedge-shaped pin 7. The left and right movement of the wedge-shaped pin 7 drives the central locking and loosening pin 6 to move back and forth, so that the main clamping plate 3 and the secondary clamping plate 4 form a clamping space to achieve tightening or loosening, thereby clamping and loosening the sensor 2 to be pasted therein.

[0050] The wedge pin 7 is rotatably connected to the rotation control rod 8 along the length of the main clamping plate 3 and the auxiliary clamping plate 4 via a flexible cable. The rotation control rod 8 can rotate freely about its own axis relative to the wedge pin 7. The rotation control rod 8 has a driving thread 81 in the middle and a T-shaped handle 82 at the end, which can rotate the rotation control rod 8. The auxiliary clamping plate 4 has two bosses 41. Of course, if the rotation control rod 8 is stable, only one boss 41 can be provided. If only one boss is provided, its length can be appropriately increased. In this embodiment, the rotation control rod is designed to improve its stability. Two bosses 41 are located on the same side of the locking hole. The boss 41 near the middle of the main clamping plate 3 has a threaded hole that cooperates with the drive thread 81 on the outer wall of the rotation control rod 8, making the displacement of the rotation control rod 8 more stable and precise. The other boss 41 has a central hole that is clearance-fitted with the smooth part of the rotation control rod 8, which plays a stabilizing support role. This allows the rotation control rod 8 to be operated from the outside of the long tube 1 to drive the wedge pin 7 to move left and right, and drive the central locking and slack pin 6 to move back and forth, thus completing the clamping and slack of the main clamping plate 3 and the auxiliary clamping plate 4.

[0051] The upper end of the fixed base 9 is provided with a V-shaped groove along its length, or an arc groove can be provided. The long tube 1 can be stably placed on the V-shaped groove. The main clamping plate 3 and the auxiliary clamping plate 4 for fastening the sensor 2 pass through the long tube 1 and are threadedly connected to the fixed base 9 from top to bottom through the main clamping plate 3 by the fixing bolts 10, thereby firmly pressing the sensor 2 to be pasted to the bottom of the inner wall of the long tube 1. After the adhesive has cured, the clamping bolts 5 at both ends of the main clamping plate 3 and the auxiliary clamping plate 4 are loosened, and the middle of the main clamping plate 3 and the auxiliary clamping plate 4 is loosened by rotating the control rod 8 in the opposite direction, so that the pasted and cured sensor is separated from the main clamping plate 3 and the auxiliary clamping plate 4. Then the main clamping plate 3 and the auxiliary clamping plate 4 and their accessories can be removed.

[0052] Specifically, the pasting steps are as follows:

[0053] Step 1: Place the long tube 1 to be pasted into the V-shaped groove or arc groove at the upper end of the fixing base 9;

[0054] Step 2: Clamp the upper end of at least one sensor 2 to be pasted in the clamping space between the main clamping plate 3 and the auxiliary clamping plate 4. All sensors 2 to be pasted are located on the side of the locking hole away from the boss 41. Lock the main clamping plate 3 and the auxiliary clamping plate 4 with the clamping plate locking bolts 5. Pass the middle locking loosening pin 6 through the locking holes in the middle of the main clamping plate 3 and the auxiliary clamping plate 4 in sequence. Insert the small end of the wedge pin 7 into the wedge hole 61. Rotate the control rod 8. By rotating one end of the control rod 8, push the large end of the wedge pin 7 to clamp the middle of the main clamping plate 3 and the auxiliary clamping plate 4.

[0055] Step 3: Apply adhesive to the bottom of the sensor 2 to be pasted;

[0056] Step 4: Insert the locked main clamping plate 3 and auxiliary clamping plate 4, the middle locking and loosening pin 6, the wedge pin 7, the rotation control rod 8 and the sensor 2 to be pasted into the long tube 1. The two ends of the main clamping plate 3 and auxiliary clamping plate 4 protrude from the two ends of the long tube 1 respectively, and the end of the rotation control rod 8 away from the wedge pin 7 protrudes from the long tube 1.

[0057] Step 5: Pass the two fixing bolts 10 through the main clamping plate 3 or the auxiliary clamping plate 4 from top to bottom and connect them to the fixing base 9 so that the bottom of the sensor 2 to be pasted is tightly attached to the inner wall of the long tube 1.

[0058] Step 6: After the adhesive has cured, remove the two fixing bolts 10 and the two clamping plate set bolts 5. Rotate the rotation control rod 8. By using the flexible cable between the rotation control rod 8 and the wedge pin 7, the wedge pin 7 is pulled, which loosens the middle part of the main clamping plate 3 and the secondary clamping plate 4. Remove the middle loosening pins 6 and wedge pin 7 of the main clamping plate 3 and the secondary clamping plate 4, as well as the rotation control rod 8, from the long tube 1 to complete the bonding of the micro-sensor.

[0059] This invention employs a double-sided clamping plate structure. The bottom of the clamping plate structure has a sensor positioning groove, which is secured by bolts at both ends. A clamping loosening / loosening mechanism is located in the middle of the two clamping plates, and end control is achieved by rotating a control rod, ensuring reliable clamping of sensors deep within long tubes. The sidewalls of the sensor positioning grooves are equipped with self-adjusting rubber support pads, allowing multiple sensor positioning grooves to be arranged along the length of the two clamping plates as needed. This enables the simultaneous attachment of multiple sensors. After precise positioning, the two ends and the middle fastening point are tightened, and adhesive is applied. The entire clamping part, carrying the sensor, extends deep into the long tube and is fixed to the base with bolts, thus securing and holding the sensor. After the adhesive cures, rotating the control rod at the ends loosens the two clamping plates, allowing them to be removed. This process achieves precise positioning and reliable attachment of multiple sensors to the inner wall of a long tube in one operation, simplifying the operation and significantly improving attachment efficiency.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for attaching miniature sensors to the inner wall of a long tube, characterized in that: It includes a main clamping plate (3), a secondary clamping plate (4), a fixing base (9), and two fixing bolts (10), all of which are long strips. The main clamping plate (3) and the auxiliary clamping plate (4) are used to pass through the long tube (1) of the object to be pasted. They are arranged parallel to each other and connected by two clamping plate set bolts (5) respectively passing through both ends of the two. A clamping space with a length equal to the length of the long tube (1) is formed between the main clamping plate (3), the auxiliary clamping plate (4) and the two clamping plate set bolts (5). The upper end of the sensor (2) to be pasted is clamped, and the lower end of the sensor (2) to be pasted is left to be pasted on the inner wall of the long tube (1). The length of the main clamping plate (3) and the auxiliary clamping plate (4) is greater than the length of the long tube (1), and the width of both is less than the inner diameter of the long tube (1). The upper end of the fixed base (9) is provided with a V-shaped groove or an arc groove along its length direction for placing the long tube (1). The two fixing bolts (10) are distributed at both ends of the main clamping plate (3) or the auxiliary clamping plate (4), and pass through from top to bottom from the upper end of the main clamping plate (3) or the auxiliary clamping plate (4), and are detachably connected to the fixing base (9); It also includes a tightening and loosening mechanism located in the middle of the main clamping plate (3) and the auxiliary clamping plate (4). The middle tightening and loosening mechanism includes a middle tightening and loosening pin (6), a wedge pin (7) and a rotation control rod (8). The main clamping plate (3) and the auxiliary clamping plate (4) are provided with corresponding locking holes in the middle; at least one boss (41) is distributed along the length direction on the side wall of the auxiliary clamping plate (4) away from the main clamping plate (3); when multiple bosses (41) are distributed, all bosses (41) are located on the same side of the locking holes. The central locking and slack pin (6) is inserted into two locking holes, and its tail end is provided with a wedge-shaped hole (61) along the length direction of the sub-clamp plate (4). The rotation control rod (8) passes through the boss (41), and the end of the rotation control rod (8) near the locking hole is connected to the large end of the wedge pin (7) by a flexible cable; The small end of the wedge pin (7) is inserted into the wedge hole (61).

2. The micro-sensor bonding device for the inner wall of a long tube according to claim 1, characterized in that: The bottom of the main clamping plate (3) and the auxiliary clamping plate (4) is provided with at least one sensor positioning groove; the shape of the sensor positioning groove matches the shape of the sensor (2) to be pasted.

3. The micro-sensor bonding device for the inner wall of a long tube according to claim 2, characterized in that: The sensor positioning slot is equipped with a self-adjusting rubber support pad (11).

4. The micro-sensor bonding device for the inner wall of a long tube according to claim 1, 2, or 3, characterized in that: The end of the rotation control lever (8) away from the wedge pin (7) is provided with a T-shaped handle (82).

5. The micro-sensor bonding device for the inner wall of a long tube according to claim 4, characterized in that: The side wall of the sub-clamp plate (4) has two bosses (41), one of which has a threaded hole and the other has a central hole. The threaded hole and the central hole are on the same straight line and are consistent with the length direction of the sub-clamp plate (4). The rotation control rod (8) passes through the threaded hole and the center hole, and the outer wall of the rotation control rod (8) is provided with a drive thread (81) that mates with the threaded hole.

6. The micro-sensor bonding device for the inner wall of a long tube according to claim 5, characterized in that: The central locking and slack pin (6) has a square nail-shaped structure; The bottom of the main clamping plate (3) and the auxiliary clamping plate (4) are provided with three sensor positioning slots.

7. A method for attaching a miniature sensor to the inner wall of a long tube, using the miniature sensor attachment device for the inner wall of a long tube as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Place the long tube (1) to be pasted into the V-shaped groove or arc groove at the upper end of the fixed base (9); Step 2: Clamp the upper end of the sensor (2) to be pasted in the clamping space between the main clamping plate (3) and the auxiliary clamping plate (4), and lock the main clamping plate (3) and the auxiliary clamping plate (4) with the clamping plate locking bolt (5); pass the middle locking loosening pin (6) through the locking hole in the middle of the main clamping plate (3) and the auxiliary clamping plate (4) in sequence; put the small end of the wedge pin (7) into the wedge hole (61), rotate the rotating control rod (8), and push the large end of the wedge pin (7) by rotating one end of the control rod (8) to clamp the middle of the main clamping plate (3) and the auxiliary clamping plate (4); Step 3: Apply adhesive to the bottom of the sensor (2) to be pasted; Step 4: Insert the locked main clamping plate (3) and auxiliary clamping plate (4), the middle locking loosening pin (6), the wedge pin (7), the rotation control rod (8), and the sensor (2) to be pasted into the long tube (1). The two ends of the main clamping plate (3) and auxiliary clamping plate (4) protrude from the two ends of the long tube (1), and the end of the rotation control rod (8) away from the wedge pin (7) protrudes from the long tube (1). Step 5: Pass the two fixing bolts (10) through the main clamp (3) or the auxiliary clamp (4) from top to bottom and connect them to the fixing base (9) so that the bottom of the sensor (2) to be pasted is in close contact with the inner wall of the long tube (1); Step 6: After the adhesive has cured, remove the two fixing bolts (10) and the two clamping bolts (5), and take out the main clamping plate (3) and the auxiliary clamping plate (4) from the long tube (1) to complete the bonding of the micro-miniature sensor.

8. The method for attaching a micro-sensor to the inner wall of a long tube according to claim 7, characterized in that: Step 2 specifically involves clamping the upper end of at least one sensor (2) to be pasted in the clamping space between the main clamping plate (3) and the auxiliary clamping plate (4), and locking the main clamping plate (3) and the auxiliary clamping plate (4) with clamping plate locking bolts (5); passing the middle locking loosening pin (6) through the locking holes in the middle of the main clamping plate (3) and the auxiliary clamping plate (4) in sequence; inserting the small end of the wedge pin (7) into the wedge hole (61), rotating the control rod (8), and pushing the large end of the wedge pin (7) by rotating one end of the control rod (8) to clamp the middle of the main clamping plate (3) and the auxiliary clamping plate (4); Step 6 is as follows: After the adhesive has cured, remove the two fixing bolts (10) and the two clamping plate fixing bolts (5), rotate the rotation control rod (8), and pull the wedge pin (7) through the flexible cable between the rotation control rod (8) and the wedge pin (7) to loosen the middle part of the main clamping plate (3) and the secondary clamping plate (4); take out the main clamping plate (3), the secondary clamping plate (4) middle fixing loosening pin (6), the wedge pin (7) and the rotation control rod (8) from the long tube (1) to complete the bonding of the micro-miniature sensor.

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