Detection device for magnetostrictive liquid level meter

Abstract

The utility model provides a magnetostriction liquid level meter detection device. The magnetostriction liquid level meter detection device comprises a supporting frame, a meter head fixing mechanism, a detection rod fixing mechanism, a floater adjusting mechanism and a measuring mechanism. The supporting frame comprises an L-shaped back plate, supporting legs fixed to the L-shaped back plate and an installation frame installed on the L-shaped back plate. The gauge outfit fixing mechanism is mounted on the mounting frame and used for fixing a gauge outfit of the magnetostrictive liquid level meter; the detection rod fixing mechanism comprises a rod tail clamping seat used for clamping the tail of a detection rod of the magnetostrictive liquid level meter and a telescopic assembly used for controlling the rod tail clamping seat to move in the length direction of the detection rod. The floater adjusting mechanism comprises a floater clamping seat used for clamping a floater of the magnetostrictive liquid level meter and a lifting assembly used for controlling the floater clamping seat to move in the length direction of the detection rod. The measuring mechanism is used for obtaining the displacement size when the floater clamping base drives the floater to move. The magnetostrictive liquid level meter detection device is good in fixing effect, convenient to mount and dismount and wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level gauge calibration and detection, and particularly relates to a magnetostrictive liquid level gauge detection device. Background Art

[0002] Magnetostrictive liquid level gauges are mainly used for liquid level industrial measurement and control of various liquid tanks such as oil, chemical raw material storage, industrial processes, biochemistry, medicine, food and beverage, tank farm management, and underground inventory of gas stations. A magnetostrictive liquid level gauge mainly consists of a meter head, a detection rod, and a float. During measurement, the circuit unit in the meter head generates a current pulse, which travels downward along the magnetostrictive wire inside the detection rod and generates an annular magnetic field. A float equipped outside the detection rod moves up and down along the detection rod with the change of the liquid level. A permanent magnet is installed inside the float, which can generate a magnetic field. When the current magnetic field meets the float magnetic field, a "twisted" pulse is generated, and the time difference between this pulse and the current pulse is converted into a pulse signal, thereby calculating the actual position of the float and measuring the liquid level.

[0003] The existing calibration and detection methods for magnetostrictive liquid level gauges mainly include horizontal and vertical types. Whether horizontal or vertical, the magnetostrictive liquid level gauge is fixed on the detection device. The detection device is provided with a standard ruler with high precision. The float is moved along the standard ruler, and the displacement of the float measured by the standard ruler is compared with the displacement detected by the meter head. If the difference between the two displacements is within a certain range, it can be determined to be qualified. Due to the relatively long length of the detection rod of the magnetostrictive liquid level gauge, in the horizontal detection method, the detection rod is easily bent by gravity, affecting the detection accuracy. The vertical detection method does not have this problem, but due to the existence of the detection rod length problem, it is inconvenient to fix and disassemble the magnetostrictive liquid level gauge, and it is easy to damage the magnetostrictive liquid level gauge. In addition, the existing method of fixing the magnetostrictive liquid level gauge has poor fixing effect, is easy to damage the surface of the magnetostrictive liquid level gauge, and cannot adapt to magnetostrictive liquid level gauges of different sizes and models, with limited application scope. Content of the Utility Model

[0004] In view of this, to solve the above technical problems, the utility model proposes a magnetostrictive liquid level gauge detection device with good fixing effect, convenient installation and disassembly, and wide application scope.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A magnetostrictive liquid level gauge detection device, characterized by comprising:

[0007] A support frame, the support frame includes an L-shaped back plate, feet fixed on the outer surfaces of the vertical plate and the horizontal plate of the L-shaped back plate, and a mounting frame installed on the inner surface of the L-shaped back plate;

[0008] A head fixing mechanism, which is installed on the upper part of the mounting frame and is used to fix the head of the magnetostrictive level gauge.

[0009] A probe rod fixing mechanism, which includes a rod tail clamping seat for clamping the tail of the probe rod of the magnetostrictive level gauge, and a telescopic component installed on the mounting frame and capable of controlling the movement of the rod tail clamping seat along the length direction of the probe rod.

[0010] A float adjusting mechanism, which includes a float clamping seat for clamping the float of the magnetostrictive level gauge, and a lifting component fixed on the mounting frame and capable of controlling the movement of the float clamping seat along the length direction of the probe rod.

[0011] A measuring mechanism, which is used to obtain the displacement size when the float clamping seat drives the float to move.

[0012] Support feet are arranged on the outer surfaces of the vertical plate and the horizontal plate of the L-shaped back plate. The L-shaped back plate can be placed vertically or horizontally. If the size of the magnetostrictive level gauge to be measured is relatively long, the L-shaped back plate can be placed horizontally. After the magnetostrictive level gauge is fixedly installed, the L-shaped back plate is then converted to a vertical position to achieve the purpose of horizontal installation or disassembly and vertical detection, which is not only convenient for installation and disassembly but also does not affect the detection accuracy. If the size of the magnetostrictive level gauge to be measured is appropriate, vertical installation, detection, and disassembly can be adopted. The magnetostrictive level gauge is jointly fixed on the support frame by the head fixing mechanism and the probe rod fixing mechanism, with good fixing effect. Moreover, the probe rod fixing mechanism can adjust the position of the rod tail clamping seat according to the length of the probe rod of the magnetostrictive level gauge to be measured to adapt to magnetostrictive level gauges of different sizes, and has a wide range of applications.

[0013] Further, the mounting frame is fixed on the vertical plate of the L-shaped back plate through a connecting plate. An installation plate is provided on the mounting frame, and the head fixing mechanism, the telescopic component, and the lifting component are all installed on the installation plate.

[0014] Further, the head fixing mechanism includes a connecting frame installed on the mounting frame and a fixing plate fixed on the connecting frame. An installation groove is provided on the fixing plate, and the head of the magnetostrictive level gauge can be installed and clamped in the installation groove.

[0015] Further, the installation groove is a conical hole structure. An opening channel communicating with the installation groove is provided on the fixing plate. The width of the opening channel is not less than the diameter of the probe rod of the magnetostrictive level gauge and less than the diameter of the head of the magnetostrictive level gauge. Both sides of the end of the opening channel protrude and are detachably inserted with connecting bolts.

[0016] During use, the detection rod of the magnetostrictive liquid level gauge passes through the opening channel and enters the installation groove. Slightly move the magnetostrictive liquid level gauge downward, and the head of the magnetostrictive liquid level gauge can be clamped in the installation groove. Then insert the connecting bolt to block the opening channel. Since the installation groove adopts a conical hole structure, even the heads with slightly different diameter sizes can be clamped in the installation groove.

[0017] Furthermore, the lifting assembly includes a guide rail housing fixed on the mounting frame and arranged along the length direction of the magnetostrictive liquid level gauge, a driving motor 1 installed at the top of the guide rail housing, a lead screw 1 installed in the inner cavity of the guide rail housing and driven by the driving motor 1, a lead screw nut 1 sleeved on the lead screw 1, and a sliding seat connected to the lead screw nut 1 and capable of sliding on the chute of the guide rail housing; the float clamping seat is connected to the sliding seat.

[0018] The driving motor 1 drives the lead screw 1 to rotate, causing the lead screw nut 1 to move along the driving lead screw 1, driving the sliding seat to move, and further causing the float clamping seat to move, ultimately realizing the movement of the float clamped by the float clamping seat along the length direction of the detection rod.

[0019] Furthermore, the float clamping seat includes a connecting rod with one end connected to the sliding seat, a connecting frame 1 fixed to the other end of the connecting rod, and two symmetrically arranged clamping plates 1 for clamping the float; both of the two clamping plates 1 are connected to the connecting frame 1 through a spring 1.

[0020] Two symmetrically arranged clamping plates 1 are used to clamp the float, and the clamping plates 1 are connected to the connecting frame 1 through a spring 1 to achieve elastic connection. While firmly clamping the float, it will not damage the surface of the float and can adapt to floats with different diameter sizes, with stronger adaptability.

[0021] Furthermore, the clamping plate 1 is provided with a V-shaped groove for clamping the float. The V-shaped groove is used to clamp the float, and an anti-slip cushion layer is provided in the V-shaped groove to enhance friction while avoiding wearing the float.

[0022] Furthermore, the measuring mechanism includes a grating scale arranged on the guide rail housing along the length direction of the detection rod, a grating head arranged on the grating scale and connected to the sliding seat, and a digital display for displaying the displacement data of the grating head.

[0023] Both the grating head and the float move with the sliding seat. The displacement size of the grating head is displayed by the digital display. The displacement size of the grating head is the same as that of the float. What the digital display shows is the displacement of the float measured by the standard scale. Comparing this data with the displacement detected by the head, if the difference between the two displacements is within a certain range, it can be determined to be qualified.

[0024] Further, the telescopic assembly includes a second driving motor fixed on the mounting bracket, a second lead screw arranged along the length direction of the detection rod and driven by the second driving motor, and a second lead screw nut sleeved on the second lead screw; the rod tail clamping seat is connected with the second lead screw nut.

[0025] The second driving motor drives the second lead screw to rotate, so that the second lead screw nut moves along the second driving lead screw, and then drives the rod tail clamping seat to move, finally realizing the adjustment of the position of the rod tail clamping seat to adapt to detection rods of different lengths.

[0026] Further, the rod tail clamping seat includes an L-shaped rod with one end connected to the second lead screw nut, a second connecting frame fixed to the other end of the L-shaped rod, a bearing plate arranged at the bottom of the second connecting frame, and two symmetrically arranged second clamping plates for clamping the tail of the detection rod; both of the two second clamping plates are connected with the second connecting frame through second springs.

[0027] The bottom end of the tail of the detection rod is supported by the bearing plate, which can play a good supporting role for the magnetostrictive level gauge; two symmetrically arranged second clamping plates are used to clamp the tail of the detection rod, and the second clamping plates are connected with the second connecting frame through second springs to realize elastic connection. While firmly clamping the detection rod, it will not damage the surface of the detection rod, and can adapt to detection rods of different diameter sizes, with stronger adaptability.

[0028] Further, the second clamping plate is provided with a V-shaped groove for clamping the tail of the detection rod. The V-shaped groove is used to clamp the tail of the detection rod, and an anti-slip cushion layer is arranged in the V-shaped groove to enhance the friction while avoiding wearing the detection rod.

[0029] Compared with the prior art, the magnetostrictive level gauge detection device of the present utility model has the following advantages:

[0030] (1) The magnetostrictive level gauge detection device of the present utility model can adjust the mode according to the different size models of the magnetostrictive level gauge to be measured. The installation and disassembly are more convenient, efficient and safe; the head fixing mechanism and the detection rod fixing mechanism are used together for fixing, and the fixing effect is good. Moreover, the detection rod fixing mechanism can adjust the position of the rod tail clamping seat according to the length of the detection rod of the magnetostrictive level gauge to be measured to adapt to magnetostrictive level gauges of different sizes, with a wide application range;

[0031] (2) The head fixing mechanism of the present utility model can fix the heads of magnetostrictive level gauges with different diameter sizes, and the detection rod fixing mechanism can adjust the position of the rod tail clamping seat according to the length of the detection rod of the magnetostrictive level gauge to fix the detection rods of magnetostrictive level gauges with different lengths, with a wide application range and strong adaptability;

[0032] (3) The float clamping seat and the rod tail clamping seat of the present utility model both adopt an elastic connection method, which can firmly clamp while avoiding damaging the surface of the clamped object, and can adapt to clamped objects of different sizes, with a wide range of applications and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The attached drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the attached drawings:

[0034] Figure 1 is a schematic side structure diagram of the magnetostrictive level gauge detection device according to an embodiment of the present utility model;

[0035] Figure 2 is a schematic front structure diagram of the magnetostrictive level gauge detection device according to an embodiment of the present utility model;

[0036] Figure 3 is a schematic side internal structure diagram of the magnetostrictive level gauge detection device according to an embodiment of the present utility model;

[0037] Figure 4 is a schematic structure diagram of the meter head fixing mechanism according to an embodiment of the present utility model;

[0038] Figure 5 is a schematic structure diagram of the float clamping seat according to an embodiment of the present utility model;

[0039] Figure 6 is a schematic structure diagram of the rod tail clamping seat according to an embodiment of the present utility model.

[0040] DESCRIPTION OF THE REFERENCE NUMERALS:

[0041] 1 - Support frame, 2 - Meter head fixing mechanism, 3 - Probe rod fixing mechanism, 4 - Float adjusting mechanism, 5 - L-shaped back plate, 6 - Legs, 7 - Mounting bracket, 8 - Connecting bracket, 9 - Fixed plate, 10 - Mounting groove, 11 - Opening channel, 12 - Magnetostrictive level gauge, 13 - Connecting bolt, 14 - Rod tail clamping seat, 15 - Driving motor II, 16 - Lead screw II, 17 - Lead screw nut II, 18 - L-shaped rod, 19 - Connecting frame II, 20 - Bearing plate, 21 - Clamping plate II, 22 - Spring II, 23 - Float clamping seat, 24 - Guide rail housing, 25 - Driving motor I, 26 - Lead screw I, 27 - Lead screw nut I, 28 - Sliding seat, 29 - Connecting rod, 30 - Connecting frame I, 31 - Clamping plate I, 32 - Spring I, 33 - Grating scale, 34 - Grating head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0045] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0046] As Figures 1 to 6 shown, a magnetostrictive level gauge detection device includes a support frame 1, a meter head fixing mechanism 2, a probe rod fixing mechanism 3, a float adjusting mechanism 4, and a measuring mechanism;

[0047] The support frame 1 includes an L-shaped back plate 5, feet 6 fixed on the outer surfaces of the vertical plate and the horizontal plate of the L-shaped back plate 5, and a mounting bracket 7 installed on the inner surface of the L-shaped back plate 5; the mounting bracket 7 is fixed on the vertical plate of the L-shaped back plate 5 through a connecting plate;

[0048] The meter head fixing mechanism 2 includes a connecting bracket 8 installed on the upper part of the mounting bracket 7 and a fixing plate 9 fixed on the connecting bracket 8; an installation groove 10 is provided on the fixing plate 9, and the installation groove 10 is a conical hole structure; an opening channel 11 communicating with the installation groove 10 is opened on the fixing plate 9, the width of the opening channel 11 is not less than the diameter of the probe rod of the magnetostrictive level gauge 12 and less than the diameter of the meter head of the magnetostrictive level gauge 12, and both sides of the end of the opening channel 11 protrude and are detachably inserted with connecting bolts 13; the meter head of the magnetostrictive level gauge 12 can be installed and clamped in the installation groove 10;

[0049] The probe fixing mechanism 3 includes a rod tail clamping seat 14 for clamping the tail of the probe of the magnetostrictive level gauge 12, and a telescopic assembly installed on the mounting bracket 7 and capable of controlling the rod tail clamping seat 14 to move along the length direction of the probe; the telescopic assembly includes a driving motor two 15 fixed on the mounting bracket 7, a lead screw two 16 arranged along the length direction of the probe and driven by the driving motor two 15, and a lead screw nut two 17 sleeved on the lead screw two 16; the rod tail clamping seat 14 includes an L-shaped rod 18 with one end connected to the lead screw nut two 17, a connecting frame two 19 fixed to the other end of the L-shaped rod 18, a bearing plate 20 arranged at the bottom of the connecting frame two 19, and two symmetrically arranged clamping plates two 21 for clamping the tail of the probe; both of the two clamping plates two 21 are connected to the connecting frame two 19 through springs two 22; the clamping plate two 21 is provided with a V-shaped groove for clamping the tail of the probe, and an anti-slip cushion layer is arranged in the V-shaped groove;

[0050] The float adjusting mechanism 4 includes a float clamping seat 23 for clamping the float of the magnetostrictive level gauge 12, and a lifting assembly fixed on the mounting bracket 7 and capable of controlling the float clamping seat 23 to move along the length direction of the probe; the lifting assembly includes a guide rail housing 24 arranged along the length direction of the magnetostrictive level gauge 12 and fixed on the mounting bracket 7, a driving motor one 25 installed on the top of the guide rail housing 24, a lead screw one 26 installed in the inner cavity of the guide rail housing 24 and driven by the driving motor one 25, a lead screw nut one 27 sleeved on the lead screw one 26, and a sliding seat 28 connected to the lead screw nut one 27 and capable of sliding on the chute of the guide rail housing 24; the float clamping seat 23 includes a connecting rod 29 with one end connected to the sliding seat 28, a connecting frame one 30 fixed to the other end of the connecting rod 29, and two symmetrically arranged clamping plates one 31 for clamping the float; both of the two clamping plates one 31 are connected to the connecting frame one 30 through springs one 32; the clamping plate one 31 is provided with a V-shaped groove for clamping the float, and an anti-slip cushion layer is arranged in the V-shaped groove;

[0051] The measuring mechanism includes a grating scale 33 arranged on the guide rail housing 24 along the length direction of the probe, a grating head 34 arranged on the grating scale 33 and connected to the sliding seat 28, and a digital display meter for displaying the displacement data of the grating head 34; the measuring mechanism is used to obtain the displacement size when the float clamping seat 23 drives the float to move.

[0052] The working process of the magnetostrictive level gauge detection device of the present utility model is as follows:

[0053] Place the L-shaped backplane 5 horizontally, pass the detection rod of the magnetostrictive level gauge 12 through the opening channel 11 and into the installation groove 10. Slightly move the magnetostrictive level gauge 12, and the head of the magnetostrictive level gauge 12 is snap-fitted into the installation groove 10. Then insert the connecting bolt 13 to block the opening channel 11. At the same time, clamp the float of the magnetostrictive level gauge 12 with the first clamping plate 31. Adjust the position of the rod tail clamping seat 14 so that the tail of the detection rod of the magnetostrictive level gauge 12 extends between the two second clamping plates 21 and contacts the bearing plate 20. Complete the fixation of the magnetostrictive level gauge 12, and convert the L-shaped backplane 5 to a vertical position (if the length of the magnetostrictive level gauge 12 is appropriate, the magnetostrictive level gauge 12 can be fixed in the vertical state).

[0054] Start the first driving motor 25, the first lead screw 26 rotates, the first lead screw nut 27 moves along the driving first lead screw 26, driving the sliding seat 28 and the grating head 34 to move. The float clamping seat 23 clamps the float and moves along the detection rod. The displacement size of the grating head 34 is displayed by the digital display. The displacement size of the grating head 34 is the same as that of the float. What the digital display shows is the displacement of the float measured by the standard ruler. Compare this data with the displacement detected by the head of the magnetostrictive level gauge 12. If the difference between the two displacements is within a certain range, it can be determined to be qualified.

[0055] After the detection is completed, first separate the tail of the detection rod from the rod tail clamping seat 14, then remove the connecting bolt 13, then separate the float from the float clamping seat 23. At the same time, slightly lift the head so that the head is separated from the installation groove 10, and then pass through the opening channel 11 via the detection rod to take out the magnetostrictive level gauge 12 (when the detection rod is too long, the disassembly operation can be carried out in the horizontal position).

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetostrictive liquid level gauge detection device, characterized in that, Comprising: A support frame, the support frame including an L-shaped back plate, feet fixed on the outer surfaces of the vertical plate and the horizontal plate of the L-shaped back plate, and a mounting bracket mounted on the inner surface of the L-shaped back plate; A meter head fixing mechanism, the meter head fixing mechanism being mounted on the upper part of the mounting bracket for fixing the meter head of the magnetostrictive level gauge; A probe rod fixing mechanism, the probe rod fixing mechanism including a rod tail clamping seat for clamping the tail of the probe rod of the magnetostrictive level gauge, and a telescopic assembly mounted on the mounting bracket and capable of controlling the rod tail clamping seat to move along the length direction of the probe rod; A float adjusting mechanism, the float adjusting mechanism including a float clamping seat for clamping the float of the magnetostrictive level gauge, and a lifting assembly fixed on the mounting bracket and capable of controlling the float clamping seat to move along the length direction of the probe rod; A measuring mechanism, the measuring mechanism being used for obtaining the displacement size when the float clamping seat drives the float to move.

2. The magnetostrictive liquid level gauge detection device according to claim 1, characterized in that: The meter head fixing mechanism includes a connecting bracket mounted on the mounting bracket and a fixing plate fixed on the connecting bracket; an installation groove is provided on the fixing plate, and the meter head of the magnetostrictive level gauge can be installed and clamped in the installation groove.

3. The magnetostrictive liquid level gauge detection device according to claim 2, characterized in that: The installation groove is of a conical hole structure, an opening channel communicating with the installation groove is opened on the fixing plate, the width of the opening channel is not less than the diameter of the probe rod of the magnetostrictive level gauge and less than the diameter of the meter head of the magnetostrictive level gauge, and both sides of the end of the opening channel protrude and are detachably plugged with connecting bolts.

4. The magnetostrictive liquid level gauge detection device according to claim 1, characterized in that: The lifting assembly includes a guide rail housing fixed on the mounting bracket and arranged along the length direction of the magnetostrictive level gauge, a driving motor I mounted on the top of the guide rail housing, a lead screw I driven by the driving motor I and mounted in the inner cavity of the guide rail housing, a lead screw nut I sleeved on the lead screw I, and a sliding seat connected with the lead screw nut I and capable of sliding on the chute of the guide rail housing; the float clamping seat is connected with the sliding seat.

5. The magnetostrictive liquid level gauge detection device according to claim 4, wherein: The float clamping seat includes a connecting rod with one end connected with the sliding seat, a connecting frame I fixed at the other end of the connecting rod, and two symmetrically arranged clamping plates I for clamping the float; both of the two clamping plates I are connected with the connecting frame I through springs I.

6. The magnetostrictive liquid level gauge detection device according to claim 5, characterized in that: The clamping plate I is provided with a V-shaped groove for clamping the float, and an anti-slip cushion layer is arranged in the V-shaped groove.

7. The magnetostrictive liquid level gauge detection device according to claim 4, characterized in that: The measuring mechanism includes a grating scale arranged on the guide rail housing along the length direction of the probe rod, a grating head arranged on the grating scale and connected with the sliding seat, and a digital display meter for displaying the displacement data of the grating head.

8. The magnetostrictive liquid level gauge detection device according to claim 1, characterized in that: The telescopic assembly includes a driving motor II fixed on the mounting bracket and a lead screw II driven by the driving motor II and arranged along the length direction of the probe rod, and a lead screw nut II sleeved on the lead screw II; the rod tail clamping seat is connected with the lead screw nut II.

9. The magnetostrictive liquid level gauge detection device according to claim 8, wherein: The rod tail clamping seat includes an L-shaped rod with one end connected with the lead screw nut II, a connecting frame II fixed at the other end of the L-shaped rod, a bearing plate arranged at the bottom of the connecting frame II, and two symmetrically arranged clamping plates II for clamping the tail of the probe rod; both of the two clamping plates II are connected with the connecting frame II through springs II.

10. The magnetostrictive liquid level gauge detection device according to claim 9, characterized in that: The second clamping plate is provided with a V-shaped groove for clamping the tail of the detection rod, and an anti-slip cushion layer is arranged in the V-shaped groove.

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