A radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell

Abstract

This utility model discloses a radial compression fixing device for the connecting end of a sensor metal cylindrical shell. It includes a base, a guide plate, a rotating plate, pressure teeth, a limiting plate, and a limiting adjustment assembly. The guide plate is horizontally fixed on the base. The rotating plate is placed in an upward-facing mounting groove on the guide plate. The bottom of the mounting groove has evenly spaced guide grooves extending radially along the guide plate. Multiple pressure teeth are present, each with its bottom corresponding to one of the guide grooves. The guide plate, rotating plate, and limiting plate have a central through hole coaxially arranged at their centers. The limiting plate is fixedly mounted on the guide plate. The device also includes a lifting adjustment mechanism and a reciprocating drive mechanism. The advantages are that the reciprocating drive mechanism drives the rotating plate to rotate and pushes the pressure teeth to compress radially in sync, causing the nitrogen / oxygen probe metal cylindrical shell to shrink and deform at the connecting end, thus compressing and fixing the wire harness. This results in high production efficiency, consistent compression force with each compression, and good compression fixing effect. It is also adjustable in height, offering good applicability.

Description

Technical Field

[0001] This utility model relates to the field of sensor manufacturing equipment, specifically to a radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell. Background Technology

[0002] The nitrogen oxide sensor is mainly used to monitor the concentration of nitrogen oxides (NOx) in exhaust gas in real time. Its core function is to sense these gas components and transmit the data to the vehicle's ECU with a millisecond-level response, thereby precisely controlling the urea injection amount of the selective catalytic reduction (SCR) system to reduce NOx emissions in the exhaust gas. The nitrogen oxide sensor consists of three parts: a nitrogen oxide probe, a wiring harness, and a control unit. The wiring harness serves to connect the nitrogen oxide probe and the control unit.

[0003] The nitrogen-oxygen probe has a cylindrical metal shell. The front end of the shell is the probe's working end, and the rear end is the connection end for the wiring harness. There are relatively coarse threads and polygonal locking parts between the probe's working end and the connection end. The wiring harness is inserted into the cylindrical shell through the connection end. To effectively connect and fix the wiring harness to the cylindrical shell at the connection end, currently, it is generally done manually using ordinary clamping tools (such as pliers) to compress and deform the shell radially at the connection end, thus securing the wiring harness. Relying solely on manual compression of the wiring harness to the sensor shell using pliers and similar tools is not only inefficient and costly, but also results in inconsistent compression fixation. Some products are compressed too tightly, damaging the wiring harness, while others are compressed too loosely, causing wobbling and detachment. Therefore, it is necessary to provide a device specifically designed for radial compression fixation of the sensor shell and the wiring harness. Utility Model Content

[0004] This invention provides a radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell, aiming to overcome the shortcomings of the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell includes a base, a guide plate, a rotating plate, pressure teeth, a limiting plate, and a limiting adjustment assembly. The guide plate is horizontally fixed on the base. The rotating plate is placed in the mounting groove with its opening facing upward on the guide plate. The bottom of the mounting groove is provided with guide grooves evenly spaced in the circumferential direction. The guide grooves extend radially along the guide plate. There are multiple pressure teeth, and their bottoms are all pressed into the guide grooves in a corresponding manner. The guide plate, rotating plate, and limiting plate are coaxially provided with a central through hole at the center. The limiting plate is fixedly covered on the guide plate. A reserved gap is provided between the lower surface of the limiting plate and the upper surface of the rotating plate. The rotating plate is positioned with the central through hole side... The wall is provided with progressive pushing grooves evenly spaced circumferentially, corresponding one-to-one with the pressing teeth. The pressing teeth are kept in contact with the groove wall by the tail end due to the action of the elastic reset member. The tip of the pressing teeth points to the central axis of the central through hole. The limit adjustment assembly includes a fixed sleeve coaxially fixedly connected to the guide plate. A positioning sleeve is slidably connected coaxially inside the fixed sleeve. The upper end of the positioning sleeve has a positioning hole for the working end of the sensor probe to be inserted and positioned. The base is provided with a groove corresponding to the limit adjustment assembly. The groove is provided with a lifting adjustment mechanism for driving the positioning sleeve to rise and fall within the fixed sleeve. The rotating disk is driven by the reciprocating drive mechanism to rotate forward by an angle around the central axis in the mounting groove and then reverse back to the original position.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the horizontal cross-sectional shape of the upper part of the pressure tooth is elongated, including a semi-circular tail, a rectangular middle part, and an isosceles trapezoid or triangle at the head.

[0008] Furthermore, the head of the pressure tooth is provided with two stepped surfaces that are concave towards the tail from top to bottom, wherein the lowest stepped surface is provided with a blind hole, the elastic reset member is a spring, the upper end of the fixed sleeve extends upward from the central through hole of the limiting plate, one end of the spring extends into the blind hole, and the other end abuts against the outer side wall of the fixed sleeve.

[0009] Furthermore, the number of pressure teeth is 6-8, and the outer wall of the fixing sleeve forms a regular polyhedron, with the number of outer walls of the regular polyhedron corresponding one-to-one with the number of pressure teeth.

[0010] Furthermore, the guide plate and the limiting plate are fixedly connected by a plurality of locking bolts spaced around the periphery, the upper surface of the rotating plate is flush with the upper surface of the pressing tooth, and the reserved gap between the upper surface of the rotating plate and the lower surface of the limiting plate is 0.5-1.2mm.

[0011] Furthermore, the depth of the guide groove is greater than the reserved gap.

[0012] Furthermore, when the rotating disk rotates, each of the progressive pressing grooves can cause the corresponding pressing teeth to move along the guide groove towards the central axis of the central through hole, and the minimum diameter of the circle formed by the head ends of each pressing tooth is 8-12mm.

[0013] Furthermore, the lifting and adjusting mechanism is an electric push rod or a hand-tightening adjusting screw. The telescopic rod of the electric push rod or the hand-tightening adjusting screw is vertically arranged, and the upper end of the telescopic rod or the hand-tightening adjusting screw can drive the positioning sleeve to lift and adjust.

[0014] Furthermore, the reciprocating drive mechanism includes a cylinder and a transmission link. One side of the guide plate is provided with an arc-shaped notch communicating with the mounting groove. One end of the transmission link extends into the mounting groove through the arc-shaped notch and is detachably connected to the connecting plane cut out from the edge of the rotating plate. The other end of the transmission link is movably connected to the telescopic end of the cylinder. When the telescopic end of the cylinder moves in and out, it drives the rotating plate to reciprocate in both forward and reverse directions through the transmission link.

[0015] Furthermore, the transmission link is a straight rod extending radially along the rotating disk. The transmission link has a long, narrow hole extending radially along the rotating disk on the rod segment at the end away from the rotating disk. The telescopic end of the cylinder is provided with a U-shaped fork. The transmission link extends into the U-shaped fork and is movably connected by a pin inserted into the long, narrow hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The radial compression fixing device provided by this utility model can, after the working end of the nitrogen-oxygen sensor probe is inserted into the positioning hole of the positioning sleeve of the limit adjustment component, drive the rotating disk to rotate via the reciprocating drive mechanism and push each pressure tooth to compress radially in sync. This causes the metal cylindrical shell of the nitrogen-oxygen probe to shrink and deform at the connection end, thereby compressing and fixing the wire harness. The compression fixing has high production efficiency and the force of each compression is consistent, resulting in good compression fixing effect. The lifting adjustment mechanism can adjust the height of the positioning sleeve, so that nitrogen-oxygen probes with different axial dimensions can be used to compress and fix the connection end and wire harness using the compression fixing device provided by this utility model. When the radial dimensions are different at different positions of the nitrogen-oxygen sensor probe connection end, the degree of compression of the metal cylindrical shell at the connection end can be ensured by adjusting the extension of the reciprocating drive mechanism, making it highly applicable. Attached Figure Description

[0018] Figure 1An isometric view of a radial extrusion fixing device for the metal cylindrical shell connection end of a sensor provided by this utility model (reciprocating drive mechanism not shown).

[0019] Figure 2 for Figure 1 Front view of the device shown;

[0020] Figure 3 for Figure 1 Axonometric view of the device after the surface limiting plate has been removed;

[0021] Figure 4 for Figure 3 Top view of the device shown;

[0022] Figure 5 for Figure 4 A schematic diagram of the device after it is connected to the reciprocating drive mechanism;

[0023] Figure 6 for Figure 3 The device shown is an isometric view with only one pressure tooth remaining.

[0024] Figure 7 for Figure 6 Axonometric view of the device after removing the pressure teeth and rotating disk;

[0025] Figure 8 An isometric view of the fixed sleeve and positioning sleeve of the limit adjustment component after assembly (the figure shows a pressure tooth engaging with the outer wall of the regular polygonal prism structure at the top of the fixed sleeve).

[0026] Figure 9 for Figure 8 The diagram shows an isometric view of the structure with the bottom cylindrical body of the hidden fixing sleeve (the working end of the probe is inserted into the positioning hole of the positioning sleeve).

[0027] Figure 10 for Figure 9 The isometric view of the pressure tooth shown;

[0028] Figure 11 for Figure 9 The vertical cross-sectional view of the positioning sleeve shown.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Guide plate; 2. Rotary plate; 3. Pressing teeth; 4. Limiting plate; 5. Guide groove; 6. Progressive pressing groove; 7. Fixing sleeve; 8. Positioning sleeve; 9. Positioning hole; 10. Blind hole; 11. Cylinder; 12. Transmission connecting rod; 13. Arc-shaped notch; 14. Pin. Detailed Implementation

[0031] The technical solution provided by this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, if terms such as "upper", "lower", "left", "right", "top", "bottom", "inner", and "outer" are used to indicate the orientation or positional relationship, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] like Figures 1 to 11 As shown, this utility model provides a radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell, which includes a base, a guide plate 1, a rotating plate 2, pressure teeth 3, a limiting plate 4, and a limiting adjustment assembly. The guide plate 1 is horizontally fixed on the base. The rotating plate 2 is placed in the mounting groove of the guide plate 1 with its opening facing upward. The bottom of the mounting groove is provided with guide grooves 5 evenly spaced in the circumferential direction. The guide grooves 5 extend radially along the guide plate 1. There are multiple pressure teeth 3, and their bottoms are all pressed into the guide grooves 5 in a corresponding manner. The guide plate 1, the rotating plate 2, and the limiting plate 4 are coaxially provided with a central through hole at the center. The limiting plate 4 is fixedly covered on the guide plate 1. A reserved gap is provided between the lower surface of the limiting plate 4 and the upper surface of the rotating plate 2. The side wall of the central through hole of the rotating plate 2 is... A progressive pushing groove 6, evenly spaced along the circumference, corresponds one-to-one with the pressing tooth 3. The pressing tooth 3 is kept in contact with the groove wall of the progressive pushing groove 6 by the action of the elastic reset member. The tip of the pressing tooth 3 points to the central axis of the central through hole. The limiting adjustment component includes a fixed sleeve 7 coaxially fixedly connected to the guide plate 1. A positioning sleeve 8 is slidably connected coaxially inside the fixed sleeve 7. The upper end of the positioning sleeve 8 is provided with a positioning hole 9 for the sensor probe working end to be inserted and positioned. The base is provided with a groove corresponding to the limiting adjustment component. The groove is provided with a lifting adjustment mechanism for driving the positioning sleeve 8 to rise and fall within the fixed sleeve 7. The rotating disk 2 is driven by the reciprocating drive mechanism to rotate forward by an angle around the central axis in the mounting groove and then reverse back to its original position.

[0034] It should be noted that the limiting disc covers the guide disc, and a rotating disc is installed in the mounting groove between the limiting disc and the guide disc. The rotating disc contains pressure teeth that can move along the guide groove of the guide disc. The limiting disc can vertically limit the movement of the rotating disc and pressure teeth, preventing them from bouncing or deviating during movement. To ensure the durability of this device, the mounting groove should be filled with lubricating oils such as machine oil or grease, and replenished regularly. The function of the lifting adjustment mechanism is to adjust the alignment of the upper connecting end of the nitrogen-oxygen probe inserted into the positioning hole of the positioning sleeve with the pressure teeth at the pressure points. Generally, nitrogen-oxygen probes of the same specification only require one adjustment of the lifting adjustment mechanism to maintain their position. When it is necessary to press and fix two or more positions above and below the connecting end of the same nitrogen-oxygen probe, it can be done in batches. Press one position in the first batch, then adjust the lifting adjustment mechanism before proceeding to the next batch of pressing and fixing at another position.

[0035] In one embodiment of this utility model, such as Figure 4 As shown, the horizontal cross-sectional shape of the upper part of the pressure tooth 3 is elongated, including a semi-circular tail, a rectangular middle part, and an isosceles trapezoid or triangle head.

[0036] It is understandable that the shape of the upper horizontal cross section of the pressure tooth does not necessarily have to be set as a combination of semicircle, rectangle, isosceles trapezoid or triangle as mentioned above. It can also be other shapes that can achieve the corresponding function. For example, the rectangle in the middle can also be other shapes that ensure that adjacent pressure teeth do not interfere with each other.

[0037] In one embodiment of this utility model, such as Figure 10 As shown, the head of the pressure tooth 3 is provided with two stepped surfaces that are concave towards the tail from top to bottom. The lowest stepped surface is provided with a blind hole 10. The elastic reset member is a spring. The upper end of the fixing sleeve 7 extends upward from the central through hole of the limiting plate 4. One end of the spring extends into the blind hole 10, and the other end abuts against the outer side wall of the fixing sleeve 7.

[0038] It should be noted that the two-stage stepped surface design facilitates the installation of the elastic reset component and also provides a certain degree of limiting, preventing excessive compression of the connection end of the nitrogen-oxygen probe. The elastic reset component is a pressure-bearing component and always maintains a certain elastic potential energy.

[0039] In one embodiment of this utility model, the number of pressure teeth 3 is 6-8, and the outer wall of the fixing sleeve 7 forms a regular polyhedron, with the number of outer walls of the regular polyhedron corresponding one-to-one with the number of pressure teeth 3.

[0040] like Figures 3 to 6 As shown, the number of pressing teeth is set to 8. The bottom of each pressing tooth is inserted into a guide groove, and the tail is pressed against the wall of a progressive pressing groove.

[0041] In one embodiment of this utility model, the guide disk 1 and the limiting disk 4 are fixedly connected by a plurality of locking bolts spaced apart around the periphery, the upper surface of the rotating disk 2 is flush with the upper surface of the pressure tooth 3, and the reserved gap between the upper surface of the rotating disk 2 and the lower surface of the limiting disk 4 is 0.5-1.2mm.

[0042] Understandably, the limit plate can be removed from the guide plate to allow for the maintenance or replacement of the structural components within the mounting slot.

[0043] In one embodiment of this utility model, the depth of the guide groove 5 is greater than the reserved gap.

[0044] It should be noted that the depth of the guide groove is greater than the reserved gap, which ensures that even if the pressure tooth jumps a certain amount within the guide groove, it will not come out.

[0045] In one embodiment of this utility model, when the rotating disk 2 rotates, each of the progressive pressing grooves 6 can cause the corresponding pressing teeth 3 to move along the guide groove 5 toward the central axis of the central through hole, and the minimum diameter of the circle formed by the head ends of each pressing tooth 3 is 8-12mm.

[0046] It is understood that each of the pressure tooth ends approaches and squeezes the connection end of the nitrogen and oxygen probe in the radial direction towards the central through hole, and the minimum diameter of the circle formed by each pressure tooth end is the diameter of the sensor probe connection end after being compressed.

[0047] In one embodiment of this utility model, the lifting and adjusting mechanism is an electric push rod or a hand-tightening adjusting screw. The telescopic rod of the electric push rod or the hand-tightening adjusting screw is vertically arranged, and the upper end of the telescopic rod or the hand-tightening adjusting screw can drive the positioning sleeve 8 to lift and adjust.

[0048] It should be noted that although the specific structure of the lifting and adjusting mechanism is not shown in the accompanying drawings, the arrangement of the electric push rod or the hand-tightening adjusting screw to achieve this function is quite clear to those skilled in the art.

[0049] In one embodiment of this utility model, such as Figure 5 As shown, the reciprocating drive mechanism includes a cylinder 11 and a transmission link 12. One side of the guide plate 1 is provided with an arc-shaped notch 13 that communicates with the mounting groove. One end of the transmission link 12 extends into the mounting groove through the arc-shaped notch 13 and is detachably connected to the connecting plane cut out from the edge of the rotating plate 2. The other end of the transmission link 12 is movably connected to the telescopic end of the cylinder 11. When the telescopic end of the cylinder 11 moves forward and backward, it drives the rotating plate 2 to reciprocate in both forward and reverse directions through the transmission link 12.

[0050] It should be noted that, as Figure 3 As shown, the rotating disk has threaded holes for connecting the transmission connecting rod and notches for inserting the end of the transmission connecting rod on the connecting plane cut out in the area corresponding to the arc-shaped notch. The rotating disk and the transmission connecting rod are detachably connected, facilitating replacement when the rotating disk is worn or damaged, or when the transmission connecting rod is deformed or damaged.

[0051] In one embodiment of this utility model, the transmission link 12 is a straight rod extending radially along the rotating disk 2. The transmission link 12 has a long waist hole extending radially along the rotating disk 2 on the rod segment at the end away from the rotating disk 2. The telescopic end of the cylinder 11 is provided with a U-shaped fork. The transmission link 12 extends into the U-shaped fork and is movably connected by a pin 14 inserted into the long waist hole.

[0052] It should be noted that, in addition to the reciprocating drive mechanism described above, there are other options for the drive mechanism to achieve the reciprocating rotation of the rotary disk. For example, it can be achieved by using a motor to drive a crank connecting rod or an eccentric wheel, or by connecting it with a rope. Figure 5 The transmission link is located at one end away from the rotating disk, and the other end of the pull rope is connected to the take-up reel. When the motor drives the take-up reel to rotate, it pulls the rotating disk to rotate clockwise to complete the compression. After the compression is completed, if the motor reverses or the power is cut off, the rotating disk will automatically reverse and reset under the action of each elastic reset component.

[0053] Figure 5 The reciprocating drive mechanism can be equipped with an adjustable blocking and limiting mechanism at a certain position on the left side of the transmission link to adjust the maximum angle that the transmission link can rotate. The blocking and limiting mechanism can be a boss fixed on the base, with a horizontally extending adjusting screw threaded onto the boss. The maximum angle that the transmission link (rotary disk) can rotate is adjusted by rotating the adjusting screw to extend beyond the boss.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell, characterized in that, The assembly includes a base, a guide plate (1), a rotating plate (2), pressure teeth (3), a limiting plate (4), and a limiting adjustment assembly. The guide plate (1) is horizontally fixed on the base. The rotating plate (2) is placed in the mounting groove of the guide plate (1) with its opening facing upwards. The bottom of the mounting groove is provided with guide grooves (5) evenly spaced in the circumferential direction. The guide grooves (5) extend radially along the guide plate (1). Multiple pressure teeth (3) are pressed into the guide grooves (5) with their bottoms corresponding to each other. The guide plate (1), rotating plate (2), and limiting plate (4) are coaxially provided with a central through hole at their center. The limiting plate (4) is fixedly covered on the guide plate (1). A reserved gap is provided between the lower surface of the limiting plate (4) and the upper surface of the rotating plate (2). The side wall of the central through hole of the rotating plate (2) is provided with guide grooves evenly spaced in the circumferential direction. The pressure teeth (3) correspond one-to-one with the progressive pushing grooves (6). The pressure teeth (3) are kept in contact with the groove wall of the progressive pushing groove (6) due to the action of the elastic reset member. The tip of the head of the pressure teeth (3) points to the central axis of the central through hole. The limit adjustment assembly includes a fixed sleeve (7) coaxially fixedly connected to the guide plate (1). A positioning sleeve (8) is coaxially slidably connected inside the fixed sleeve (7). The upper end of the positioning sleeve (8) is provided with a positioning hole (9) for the sensor probe working end to be inserted and positioned. The base is provided with a groove corresponding to the limit adjustment assembly. The groove is provided with a lifting adjustment mechanism for driving the positioning sleeve (8) to rise and fall inside the fixed sleeve (7). The rotating disk (2) is driven by the reciprocating drive mechanism to rotate forward by an angle around the central axis in the mounting groove and then reverse back to its original position.

2. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 1, characterized in that, The horizontal cross-sectional shape of the upper part of the pressure tooth (3) is long and narrow, including a semi-circular tail, a rectangular middle part, and an isosceles trapezoid or triangle head.

3. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 1, characterized in that, The head of the pressure tooth (3) is provided with two stepped surfaces that are concave towards the tail from top to bottom. The lowest stepped surface is provided with a blind hole (10). The elastic reset member is a spring. The upper end of the fixed sleeve (7) extends upward from the central through hole of the limiting plate (4). One end of the spring extends into the blind hole (10), and the other end abuts against the outer wall of the fixed sleeve (7).

4. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 3, characterized in that, The number of pressure teeth (3) is 6-8. The outer wall of the fixing sleeve (7) forms a regular polyhedron, and the number of the outer wall of the regular polyhedron corresponds one-to-one with the number of pressure teeth (3).

5. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 1, characterized in that, The guide plate (1) and the limiting plate (4) are fixedly connected by a plurality of locking bolts spaced around the periphery. The upper surface of the rotating plate (2) is flush with the upper surface of the pressure tooth (3). The reserved gap between the upper surface of the rotating plate (2) and the lower surface of the limiting plate (4) is 0.5-1.2mm.

6. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 5, characterized in that, The depth of the guide groove (5) is greater than the reserved gap.

7. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 1, characterized in that, When the rotating disk (2) rotates, each of the progressive pressing grooves (6) can cause the corresponding pressing teeth (3) to move along the guide groove (5) toward the central axis of the central through hole. The minimum diameter of the circle formed by the head ends of each pressing tooth (3) is 8-12mm.

8. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 1, characterized in that, The lifting and adjusting mechanism is an electric push rod or a hand-tightening adjusting screw. The telescopic rod of the electric push rod or the hand-tightening adjusting screw is set vertically. The upper end of the telescopic rod or the hand-tightening adjusting screw can drive the positioning sleeve (8) to lift and adjust.

9. A radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to any one of claims 1 to 8, characterized in that, The reciprocating drive mechanism includes a cylinder (11) and a transmission link (12). One side of the guide plate (1) is provided with an arc-shaped notch (13) that communicates with the mounting groove. One end of the transmission link (12) extends into the mounting groove through the arc-shaped notch (13) and is detachably connected to the connecting plane cut out from the edge of the rotating plate (2). The other end of the transmission link (12) is movably connected to the telescopic end of the cylinder (11). When the telescopic end of the cylinder (11) moves in a telescopic motion, it drives the rotating plate (2) to reciprocate in both forward and reverse directions through the transmission link (12).

10. The radial extrusion fixing device for the connecting end of a sensor metal cylindrical shell according to claim 9, characterized in that, The transmission link (12) is a straight rod extending radially along the rotating disk (2). The transmission link (12) has a long waist hole extending radially along the rotating disk (2) on the rod segment at the end away from the rotating disk (2). The telescopic end of the cylinder (11) is provided with a U-shaped fork. The transmission link (12) extends into the U-shaped fork and is movably connected by a pin (14) inserted into the long waist hole.

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