Sensor mounting and fixing device

Abstract

The invention discloses a sensor mounting and fixing device, and relates to the technical field of sensor auxiliary mounting. The sensor mounting and fixing device comprises a positioning sleeve, a locking sleeve and a fixing sleeve, the positioning sleeve is used for being matched with a positioning component, the positioning sleeve is provided with a connecting groove, a conical locking groove and a first guide groove allowing a sensor rod body to penetrate through, the locking sleeve is provided with a second guide groove and a penetrating groove extending in the axial direction, and the fixing sleeve is used for fixing the sensor rod body. The locking sleeve can elastically deform and comprises a locking section matched with the locking groove, the fixing sleeve is matched with the connecting groove and provided with a third guide groove, and the fixing sleeve is adjustable in the axial position of the positioning sleeve and used for pushing the locking sleeve so that the locking section can be hooped to the circumferential side of the sensor rod body. According to the sensor mounting and fixing device, the sensor can be accurately positioned during mounting and fixing, it is guaranteed that the axial center line of the sensor coincides with the positioning center line, and meanwhile lossless fixing of a sensor rod body is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor auxiliary installation, and in particular to a sensor installation and fixing device. Background Art

[0002] In the related art, when locking and fixing the measuring sensor that needs to be installed on the positioning member, a screw extending radially along the mounting hole is often threaded on the positioning member, and the screw is pressed against the sensor rod by screwing it. However, this fastening method often causes different degrees of damage to the sensor rod due to different locking forces, and it is easy to cause deviations in the positioning of the sensor. For example, when installing a micro-displacement sensor for precision measurement, in order to fix the installation position of the sensor unchanged, the screw will be tightened to press against the protective shell of the sensor. When the pressing force is too large, the protective shell of the sensor will be crushed, causing the internal components of the sensor to be damaged and unusable. In addition, this fixing method causes the pressing force to be applied to a point on the circumference of the sensor rod, which will cause the slope of the axial center line of the sensor and the positioning center line to shift, affecting the accuracy of the measurement. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a sensor installation and fixing device, which can accurately position the installation and fixing of the sensor, ensure that the axial center line of the sensor coincides with the positioning center line, and simultaneously achieve non-destructive fixation of the sensor rod body.

[0005] The sensor installation and fixing device according to the embodiment of the present invention comprises:

[0006] A positioning sleeve, the positioning sleeve is used to cooperate with the positioning member, the positioning sleeve has a first guide groove, a locking groove and a connecting groove which are arranged in sequence, the diameter of the first guide groove is equal to the diameter of the sensor rod body and is used for the sensor rod body to pass through, the locking groove is a tapered groove and the diameter of the locking groove increases in a direction away from the first guide groove;

[0007] A locking sleeve, wherein the locking sleeve has a second guide groove for the sensor rod to pass through, the locking sleeve is provided with a through groove extending in the axial direction and communicating with the second guide groove, the locking sleeve is elastically deformable and comprises a locking segment matched with the locking groove, the outer side wall of the locking segment is a tapered surface and the taper of the locking segment is the same as the taper of the locking groove, and the outer diameter of the locking segment at one end close to the first guide groove is larger than the diameter of the locking groove at one end close to the first guide groove;

[0008] A fixing sleeve, which cooperates with the connecting groove and has a third guide groove, the diameter of the third guide groove is equal to the diameter of the sensor rod body and is used for the sensor rod body to pass through, the fixing sleeve is adjustable along the axial position of the positioning sleeve and is used to push the locking sleeve so that the locking section is tightened around the circumference of the sensor rod body.

[0009] The sensor installation and fixing device of the embodiment of the present invention can accurately position the installation and fixing of the sensor, ensure that the axial center line of the sensor coincides with the positioning center line, and simultaneously achieve non-destructive fixation of the sensor rod body.

[0010] In some embodiments, the connecting groove is threadedly connected to the fixing sleeve, and an adjusting portion is provided at the end of the fixing sleeve, and the adjusting portion is used to cooperate with a wrench to drive the fixing sleeve to rotate relative to the positioning sleeve.

[0011] In some embodiments, a first guide section is provided at one end of the positioning sleeve away from the first guide groove, and a second guide section is provided at the end of the fixing sleeve corresponding to the first guide section. The second guide section is slidably assembled on the first guide section and is adapted to the size of the first guide section.

[0012] In some embodiments, the first guide segment is threadedly connected with a stop screw extending radially along the first guide segment, and an end of the stop screw is used to stop against the second guide segment to limit the rotation of the second guide segment.

[0013] In some embodiments, a buffer ring is included. The buffer ring is disposed in the positioning sleeve and between the fixing sleeve and the locking sleeve. The buffer ring is used to be sleeved on the sensor rod body.

[0014] In some embodiments, a support spring is included, the fixing sleeve is slidably arranged in the connecting groove and is snap-fitted with the positioning sleeve, the support spring is arranged in the positioning sleeve and the two ends are respectively abutted against the locking sleeve and the fixing sleeve to drive the fixing sleeve to move relative to the locking sleeve in a direction away from the locking sleeve.

[0015] In some embodiments, the connecting groove includes a "J"-shaped snap-in groove arranged axially along the positioning sleeve, and the fixing sleeve is provided with a sliding column extending radially, and the sliding column is used to slide in the snap-in groove.

[0016] In some embodiments, a shoulder is provided on the positioning sleeve, and the shoulder is used to stop against the end surface of the positioning member.

[0017] In some embodiments, a locking nut is threadedly connected to the positioning sleeve, and the locking nut is arranged on the side of the shoulder close to the first guide groove and is used to clamp the shoulder on both sides of the positioning member, and / or, a limiting portion is provided on the positioning sleeve, and the limiting portion is used to pass through the positioning member to prevent the positioning sleeve from rotating with the positioning member.

[0018] In some embodiments, a plurality of telescopic slots are provided on the locking segment at intervals along the circumferential direction, the extension direction of the telescopic slots is parallel to the axis of the locking sleeve, and the telescopic slots are connected to the second guide hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a sensor installation and fixing device according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of a positioning sleeve in a sensor installation and fixing device according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic structural diagram of a locking sleeve in a sensor installation and fixing device according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of a fixing sleeve in a sensor installation and fixing device according to an embodiment of the present invention.

[0023] Figure 5 It is a structural schematic diagram of a sensor installation and fixing device according to another embodiment of the present invention.

[0024] Reference numerals:

[0025] Positioning sleeve 1; first guide groove 11; locking groove 12; connecting groove 13; first guide section 14; snap-in groove 15; shaft shoulder 16;

[0026] Locking sleeve 2; second guide groove 21; through groove 22; locking section 23; telescopic notch 24;

[0027] Fixed sleeve 3; third guide groove 31; adjustment portion 32; second guide section 33; sliding column 34;

[0028] Sensor rod 4;

[0029] Stop screw 5;

[0030] Buffer ring 6;

[0031] Support spring 7. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] like Figures 1 to 5 As shown, the sensor installation and fixing device of the embodiment of the present invention comprises a positioning sleeve 1, a locking sleeve 2 and a fixing sleeve 3. The positioning sleeve 1 is used to cooperate with the positioning member. The positioning sleeve 1 has a first guide groove 11, a locking groove 12 and a connecting groove 13 which are arranged in sequence. The diameter of the first guide groove 11 is equal to the diameter of the sensor rod body 4 and is used for the sensor rod body 4 to pass through. The locking groove 12 is a tapered groove and the diameter of the locking groove 12 increases in a direction away from the first guide groove 11. The locking sleeve 2 has a second guide groove 21 for the sensor rod body 4 to pass through. The locking sleeve 2 is provided with a through groove 22 extending in the axial direction and communicating with the second guide groove 21. The locking groove 12 is provided with a through groove 22 extending in the axial direction and communicating with the second guide groove 21. The tight sleeve 2 is elastically deformable and includes a locking section 23 that matches the locking groove 12. The outer side wall of the locking section 23 is a conical surface and the taper of the locking section 23 is the same as the taper of the locking groove 12. The outer diameter of the locking section 23 at one end close to the first guide groove 11 is larger than the diameter of the locking groove 12 at one end close to the first guide groove 11. The fixing sleeve 3 matches the connecting groove 13 and has a third guide groove 31. The diameter of the third guide groove 31 is equal to the diameter of the sensor rod body 4 and is used for the sensor rod body 4 to pass through. The axial position of the fixing sleeve 3 along the positioning sleeve 1 is adjustable and is used to push the locking sleeve 2 so that the locking section 23 is tightened to the peripheral side of the sensor rod body 4.

[0034] When the sensor installation and fixing device of the embodiment of the present invention is used, the positioning sleeve 1 is fixed on the positioning member to ensure that the axis of the positioning sleeve 1 coincides with the axis of the mounting hole of the positioning member, providing support for the precise installation of the sensor, and the sensor rod body 4 passes through the first guide groove 11, the locking groove 12 and the connecting groove 13, and extends from the position of the first guide groove 11. The size of the first guide groove 11 is adapted to the sensor rod body 4 to calibrate the axial positioning of the sensor rod body 4. At the same time, the locking sleeve 2 is sleeved on the sensor rod body 4 and moved into the connecting groove 13 of the positioning sleeve 1. The fixing sleeve 3 is installed at position 13, and the position of the fixing sleeve 3 is adjusted axially along the positioning sleeve 1. The end of the fixing sleeve 3 drives the locking sleeve 2 to move toward the direction close to the first guide groove 11 and the locking sleeve 2 is elastically deformed under the action of the locking groove 12. The groove width of the through groove 22 becomes smaller, and the locking section 23 and the sensor rod body 4 are tightened on the peripheral side of the sensor rod body 4 in a surface-to-surface contact manner, reducing the local force on the peripheral side of the sensor, and realizing non-destructive fixation of the sensor rod body 4. At the same time, the third guide groove 31 can re-calibrate the axial positioning of the sensor rod body 4 to ensure the accuracy of the sensor measurement.

[0035] The sensor installation and fixing device of the embodiment of the present invention can accurately position the installation and fixing of the sensor, ensure that the axial center line of the sensor coincides with the positioning center line, and simultaneously achieve non-destructive fixing of the sensor rod body 4 .

[0036] Optionally, the locking sleeve 2 includes an extension section, which is used to fit into the locking groove 12 or the connecting groove 13 , and the locking section 23 can be moved by pushing the extension section with the end of the fixing sleeve 3 .

[0037] It should be noted that the locking sleeve 2 is made of a material with weaker material properties than the sensor rod 4 , the positioning sleeve 1 and the fixing sleeve 3 , so that the hardness and rigidity of the locking sleeve 2 are slightly lower than those of other parts.

[0038] Optionally, the locking sleeve 2 may be made of copper material or high-strength engineering plastics, but is not limited to copper material and high-strength engineering plastics.

[0039] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the connecting groove 13 is threadedly connected to the fixing sleeve 3, and an adjusting portion 32 is provided at the end of the fixing sleeve 3. The adjusting portion 32 is used to cooperate with a wrench to drive the fixing sleeve 3 to rotate relative to the positioning sleeve 1. By cooperating with the wrench and the adjusting portion 32, the fixing sleeve 3 can be tightened relative to the positioning sleeve 1 by rotating the adjusting portion 32. The operation is convenient and reliable, and the threaded connection has a self-locking function, which can keep the position of the locking sleeve 2 fixed, thereby ensuring that the locking sleeve 2 is elastically deformed and then the locking groove 12 position circumferentially clamps the sensor rod body 4, thereby ensuring the installation firmness and stability of the sensor when in use.

[0040] Optionally, the adjusting portion 32 includes two adjusting surfaces arranged in parallel, and the adjusting surfaces are used to cooperate with an open-end wrench.

[0041] Optionally, the outer contour of the cross section of the adjusting portion 32 is a rectangle or a hexagon, or the adjusting portion 32 is an inner three-shaped structure, an inner four-shaped structure or an inner six-shaped structure.

[0042] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, a first guide section 14 is provided at one end of the positioning sleeve 1 away from the first guide groove 11, and a second guide section 33 is provided at the end of the fixing sleeve 3 corresponding to the first guide section 14. The second guide section 33 is slidably assembled on the first guide section 14 and is adapted to the size of the first guide section 14. The first guide section 14 and the second guide section 33 are provided. Before the fixing sleeve 3 is threadedly connected to the connecting groove 13, the first guide section 14 and the second guide section 33 are plugged in and matched, which can provide auxiliary positioning for the installation of the fixing sleeve 3 and is convenient to operate.

[0043] In some embodiments, Figure 1 and Figure 2 As shown, the first guide section 14 is threadedly connected with a stop screw 5 extending radially along the first guide section 14, and the end of the stop screw 5 is used to stop at the second guide section 33 to limit the rotation of the second guide section 33. After the fixing sleeve 3 and the connecting groove 13 are threadedly connected, the stop screw 5 is screwed, and the end of the stop screw 5 is pressed against the second guide section 33. The pressure of the stop screw on the second guide section 33 is increased to increase the force required for the fixing sleeve 3 to rotate relative to the positioning sleeve 1 to ensure the pushing effect of the fixing sleeve 3 on the locking sleeve.

[0044] In some embodiments, Figure 1 As shown, it includes a buffer ring 6, which is arranged in the positioning sleeve 1 and between the fixing sleeve 3 and the locking sleeve 2. The buffer ring 6 is used to be sleeved on the sensor rod body 4. The buffer ring 6 is set. When the fixing sleeve 3 drives the locking sleeve 2 to move, it first stops with the buffer ring 6 and then transmits it to the locking sleeve 2, gradually increasing the force required to drive the fixing sleeve 3 to rotate until the locking sleeve 2 is tightened around the sensor rod body 4, avoiding the fixing sleeve 3 from rotating during the locking process and affecting the through groove 22 of the locking sleeve 2 and then affecting the elastic deformation of the locking sleeve 2, thereby ensuring that the locking sleeve 2 can be used normally.

[0045] Optionally, an extension groove is provided between the locking groove 12 and the first guide groove 11 , and the diameter of the extension groove is not less than the diameter of the connecting groove 13 .

[0046] In some embodiments, Figure 5 As shown, it includes a supporting spring 7, a fixing sleeve 3 is slidably arranged in a connecting groove 13 and is snap-fitted with a positioning sleeve 1, the supporting spring 7 is arranged in the positioning sleeve 1 and two ends thereof are respectively abutted against a locking sleeve 2 and a fixing sleeve 3 to drive the fixing sleeve 3 to move relative to the locking sleeve 2 in a direction away from the locking sleeve 2.

[0047] The fixing sleeve 3 is slidably set in the positioning sleeve 1, and the position of the fixing sleeve 3 is fixed by snapping. When the fixing sleeve 3 is installed, the movement of the fixing sleeve 3 will compress the length of the supporting spring 7, so that the supporting spring 7 accumulates elastic force. When the fixing sleeve 3 moves into place, the elastic force of the supporting spring 7 will act on the locking sleeve 2 to drive the locking section 23 to move in the direction close to the first guide groove 11, thereby causing the locking section 23 to undergo elastic deformation to stirrup the surrounding side of the sensor rod body 4, which is convenient to operate.

[0048] In some embodiments, Figure 5 As shown, the connecting groove 13 includes a “J”-shaped clamping groove 15 arranged axially along the positioning sleeve 1 , and a sliding column 34 extending radially is provided on the fixing sleeve 3 , and the sliding column 34 is used for slidingly fitting in the clamping groove 15 .

[0049] The first and third sections are both extended along the axial direction of the positioning sleeve 1, and the second section is extended along the axial direction of the positioning groove and is connected to the arc groove. The sliding post 34 of the fixing sleeve 3 is used to be slidably arranged in the fixing groove 15. When the fixing sleeve 3 is clamped and assembled, the fixing sleeve 3 is pushed to move along the axial direction of the positioning sleeve 1. The sliding post 34 first moves along the first section. At the same time, the supporting spring 7 is compressed. When the position of the second section is reached, the fixing sleeve 3 is rotated to make the sliding post 34 move to the position where the second and third sections are connected. At this time, the thrust on the fixing sleeve 3 is released, and the supporting spring 7 pushes the fixing sleeve 3 to make the sliding post 34 move a set distance in the third section and then stop with the positioning sleeve 1 to realize the clamping cooperation between the fixing sleeve 3 and the connecting groove 13. The other end of the supporting spring 7 pushes the locking sleeve 2 to move in the direction close to the first guide groove 11, and the locking sleeve 2 is clamped on the peripheral side of the sensor rod body 4.

[0050] Optionally, at least two clamping grooves 15 are provided, at least two sliding posts 34 are provided on the fixing sleeve 3 , and the sliding posts 34 are arranged in a one-to-one correspondence with the clamping grooves 15 .

[0051] Optionally, a lever extending in the radial direction is provided on the fixing sleeve 3 to facilitate driving the fixing sleeve 3 to slide in the connecting groove 13 .

[0052] In some embodiments, Figure 1 , Figure 2 and Figure 5 As shown, the positioning sleeve 1 is provided with a shaft shoulder 16, which is used to stop against the end surface of the positioning member to facilitate the fixing and disassembly of the positioning sleeve 1.

[0053] In some embodiments, a locking nut is threadedly connected to the positioning sleeve 1. The locking nut is arranged on the side of the shoulder 16 close to the first guide groove 11 and is used to clamp the shoulder 16 on both sides of the positioning component. The locking nut and the shoulder 16 are respectively clamped on both sides of the positioning component, which facilitates the installation and disassembly of the positioning sleeve 1.

[0054] In some embodiments, a limiting portion is provided on the positioning sleeve 1, and the limiting portion is used to be passed through the positioning component to enable the positioning sleeve 1 to cooperate with the positioning component to prevent rotation. The limiting portion realizes the anti-rotation cooperation between the positioning sleeve 1 and the positioning component, which facilitates the fixation of the positioning sleeve 1 and eliminates the interference that may be caused by the rotation of the positioning sleeve 1 relative to the positioning component during the installation of other components.

[0055] Optionally, the limiting portion is arranged on the circumferential side of the positioning sleeve 1, so that the outer contour of the cross section of the positioning sleeve 1 along the radial direction is non-circular, such as elliptical or polygonal.

[0056] Optionally, the limiting portion is a plug post and is inserted into the positioning member.

[0057] In some embodiments, Figure 3As shown, a plurality of telescopic slots 24 are provided at intervals along the circumferential direction on the locking section 23 , the extension direction of the telescopic slots 24 is parallel to the axis of the locking sleeve 2 , and the telescopic slots 24 are communicated with the second guide hole.

[0058] The telescopic notch 24 is provided to facilitate elastic deformation of the locking section 23 and ensure the fastening effect and rigid recovery of the locking section 23, so as to achieve the requirement of evenly applying locking force to the sensor rod 4 in the circumferential direction and facilitate the firmness of fixing the sensor rod 4.

[0059] The sensor installation and fixing device of the present invention has the following beneficial effects:

[0060] 1. The installation position of the precision sensor can be accurately located, ensuring that the center axis of the sensor coincides with the center line of the positioning direction, avoiding the occurrence of different axes and axis slope offsets, and positioning is accurate.

[0061] 2. During the process of applying force to the sensor rod, the elastically deformable locking section changes the single-point clamping method into a balanced locking of the entire circumference, ensuring that the sensor rod will not be damaged due to concentrated and excessive clamping force during the fixing process, thus achieving damage-free and accurate fixing of the precision sensor.

[0062] 3. Widely used, this device can be widely used in installation locations with the same type of requirements.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A sensor installation and fixing device, characterized in that: include: A positioning sleeve, the positioning sleeve is used to cooperate with the positioning member, the positioning sleeve has a first guide groove, a locking groove and a connecting groove which are arranged in sequence, the diameter of the first guide groove is equal to the diameter of the sensor rod body and is used for the sensor rod body to pass through, the locking groove is a tapered groove and the diameter of the locking groove increases in a direction away from the first guide groove; A locking sleeve, wherein the locking sleeve has a second guide groove for the sensor rod to pass through, the locking sleeve is provided with a through groove extending in the axial direction and communicating with the second guide groove, the locking sleeve is elastically deformable and comprises a locking segment matched with the locking groove, the outer side wall of the locking segment is a tapered surface and the taper of the locking segment is the same as the taper of the locking groove, and the outer diameter of the locking segment at one end close to the first guide groove is larger than the diameter of the locking groove at one end close to the first guide groove; A fixing sleeve, which cooperates with the connecting groove and has a third guide groove, the diameter of the third guide groove is equal to the diameter of the sensor rod body and is used for the sensor rod body to pass through, the fixing sleeve is adjustable along the axial position of the positioning sleeve and is used to push the locking sleeve so that the locking section is tightened around the circumference of the sensor rod body.

2. The sensor installation and fixing device according to claim 1, characterized in that: The connecting groove is threadedly connected to the fixing sleeve, and an adjusting portion is provided at the end of the fixing sleeve. The adjusting portion is used to cooperate with a wrench to drive the fixing sleeve to rotate relative to the positioning sleeve.

3. The sensor installation and fixing device according to claim 2, characterized in that: A first guide section is provided at one end of the positioning sleeve away from the first guide groove, and a second guide section is provided at the end of the fixing sleeve corresponding to the first guide section. The second guide section is slidably assembled on the first guide section and is adapted to the size of the first guide section.

4. The sensor installation and fixing device according to claim 3, characterized in that: The first guide segment is threadedly connected with a stop screw extending radially along the first guide segment, and the end of the stop screw is used to stop against the second guide segment to limit the rotation of the second guide segment.

5. The sensor installation and fixing device according to claim 2, characterized in that: It comprises a buffer ring, which is arranged in the positioning sleeve and between the fixing sleeve and the locking sleeve, and is used for being sleeved on the sensor rod body.

6. The sensor installation and fixing device according to claim 1, characterized in that: It includes a supporting spring, the fixing sleeve is slidably arranged in the connecting groove and is snap-fitted with the positioning sleeve, the supporting spring is arranged in the positioning sleeve and the two ends are respectively abutted against the locking sleeve and the fixing sleeve to drive the fixing sleeve to move relative to the locking sleeve in a direction away from the locking sleeve.

7. The sensor installation and fixing device according to claim 6, characterized in that: The connecting groove comprises a "J"-shaped clamping groove arranged axially along the positioning sleeve, and a sliding column extending radially is provided on the fixing sleeve, and the sliding column is used for slidingly fitting in the clamping groove.

8. The sensor installation and fixing device according to claim 1, characterized in that: The positioning sleeve is provided with a shaft shoulder, and the shaft shoulder is used to stop against the end surface of the positioning component.

9. The sensor installation and fixing device according to claim 8, characterized in that: A locking nut is threadedly connected to the positioning sleeve, and the locking nut is arranged on the side of the shoulder close to the first guide groove and is used to clamp the shoulder on both sides of the positioning member, and / or, a limiting portion is provided on the positioning sleeve, and the limiting portion is used to pass through the positioning member to prevent the positioning sleeve from rotating with the positioning member.

10. The sensor installation and fixing device according to claim 1, characterized in that: The locking section is provided with a plurality of telescopic slots at intervals along the circumferential direction, the extension direction of the telescopic slots is parallel to the axis of the locking sleeve, and the telescopic slots are communicated with the second guide hole.

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