Penetrating sensor locking device

Abstract

The utility model discloses a kind of through-type sensor locking devices, to solve the problems of existing sensor disassembly difficulty, high maintenance cost. The locking device of the utility model includes first locking assembly, second locking assembly, through pipe and sensor cable, first locking assembly is connected with second locking assembly, second locking assembly is set on the closed side wall of equipment to be detected, through pipe is along the inside of closed side wall and enters second locking assembly, sensor cable sequentially passes through first locking assembly, second locking assembly and through pipe and is connected with the sensor of the inside of closed side wall in the position to be detected, one end of through pipe is connected with the position to be detected;First locking assembly includes shell, abutting component, ball and elastic component, first chamber and second chamber are formed in shell, abutting component and elastic component abut and form accommodating chamber, accommodating chamber is communicated with second chamber, ball is located in accommodating chamber, continuously exerting circumferential locking force to sensor cable.

Description

Technical Field

[0001] This utility model belongs to the field of equipment sensor installation technology, and particularly relates to a through-type sensor locking device. Background Technology

[0002] Sensors, as key monitoring components, are widely used in fields such as industrial equipment status sensing and environmental parameter acquisition. Especially in large and complex electromechanical systems, such as generator sets, sensors need to be deployed in specific locations to monitor physical quantities such as temperature and vibration in real time.

[0003] However, the complex and compact internal structure of such devices, coupled with limited space for sensor installation and frequent need for disassembly and reassembly, makes replacing traditional sensors difficult and maintenance costs high. Addressing this pain point by designing an easily replaceable sensor would significantly reduce the difficulty of sensor deployment and maintenance in this scenario, improving operational convenience. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] The purpose of this invention is to provide a through-type sensor locking device, which aims to solve the problems of difficult sensor disassembly and assembly and high maintenance costs.

[0006] (II) Technical Solution

[0007] To address the aforementioned problems, this utility model provides a through-type sensor locking device, comprising a first locking component, a second locking component, a through-tube, and a sensor cable. The first locking component is connected to the second locking component, and the second locking component is disposed through the closed sidewall of the device to be tested. The through-tube passes through the second locking component along the inner side of the closed sidewall. The sensor cable passes sequentially through the first locking component, the second locking component, and the through-tube and is connected to a sensor at the detection position on the inner side of the closed sidewall. One end of the through-tube is connected to the detection position.

[0008] The first locking component locks the sensor cable, and the second locking component locks the insertion tube and fixes the insertion sensor locking device on the device to be tested.

[0009] The second locking assembly includes a through portion, a blade ring member, and a connecting portion;

[0010] The through portion is fixed to the closed side wall. The through portion has a first channel inside. The insertion tube passes through the first channel. One end of the connecting portion is detachably connected to the through portion. A pressing space is formed between the connecting portion and the through portion. The blade ring component is disposed in the pressing space and is sleeved on the insertion tube. The other end of the connecting portion is connected to the first locking component.

[0011] Preferably, the first locking assembly includes a housing, a retaining member, a ball bearing, and an elastic member. The housing is connected to the second locking assembly. A first chamber and a second chamber are formed within the housing. The first chamber communicates with the second chamber. The retaining member is slidably connected to the inlet at the top of the second chamber. The elastic member is located within the second chamber. The retaining member abuts against the elastic member and forms a receiving chamber. The receiving chamber communicates with the second chamber. The ball bearing is located within the receiving chamber. The inner diameter of the receiving chamber and the inner diameter of the second chamber gradually increase in the direction of the first chamber.

[0012] Preferably, the supporting member includes a pressing part and a supporting part. The pressing part is slidably connected to the inlet at the top of the second chamber, and the supporting part is disposed in the second chamber. The pressing part is connected to the supporting part, and the pressing part has a hollow structure and communicates with the receiving chamber.

[0013] Preferably, the elastic member includes an annular baffle and a spring. The annular baffle abuts against the bottom of the supporting portion. The ball bearing is disposed on the annular baffle. One end of the spring is connected to the bottom of the annular baffle, and the other end of the spring is connected to the bottom of the first chamber.

[0014] Preferably, the bottom of the first chamber is provided with a ring, and the spring abuts against the bottom of the first chamber through the ring.

[0015] Preferably, the first locking assembly further includes a locking head, a first thread is formed on the outer peripheral side of the pressing part, a second thread is formed on the inner peripheral side of the locking head, the first thread and the second thread are adapted to each other, and the bottom diameter of the locking head is larger than the top opening diameter of the second chamber.

[0016] Preferably, the through portion includes a through end and a mating end;

[0017] The outer wall of the through end is provided with a third thread, which is connected to the closed side wall. The mating end is detachably connected to the connecting part. A first conical surface is formed between the through end and the mating end. The bottom of the blade ring component abuts against the first conical surface.

[0018] Preferably, the connecting part includes a connecting end and a locking end, the connecting end is detachably connected to the mating end, the locking end is connected to the first locking assembly, the bottom of the connecting end is formed with a first arc surface, and the top of the blade ring component abuts against the first arc surface.

[0019] Preferably, the cutting ring component includes a first cutting ring and a second cutting ring;

[0020] The top of the first blade ring is formed with a second arc surface, and the first arc surface and the second arc surface are adapted to each other;

[0021] The second cutting ring is a hollow cone, and the bottom of the first cutting ring has a second conical surface. The inner conical surface of the second cutting ring is adapted to the second conical surface, and the outer conical surface of the second cutting ring is adapted to the first conical surface.

[0022] Preferably, the first locking assembly and the second locking assembly are connected by a bent tube structure. The sensor cable passes through the first locking assembly, the bent tube structure, the second locking assembly and the insertion tube in sequence and is connected to the detection position on the inner side of the closed sidewall. One end of the insertion tube is connected to the detection position.

[0023] (III) Beneficial Effects

[0024] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0025] 1. The second locking component penetrates the closed sidewall, forming a multi-layered seal with the closed sidewall, the second locking component, and the insertion tube, in conjunction with the isolation function of the insertion tube. The chamber structure of the first locking component also reduces the intrusion of external impurities, making it suitable for applications such as oil tanks and pressure vessels, effectively preventing oil and gas leakage. Simultaneously, the second locking component effectively restricts the movement of the insertion tube, ensuring the relative position of the sensor cable and the insertion tube after the sensor cable is laid in the tube, further improving the stability of the sensor cable signal transmission.

[0026] 2. Each component is modularly designed. The first and second locking components are detachably connected. The insertion tube is inserted into the second locking component from the inside, and the sensor cable is inserted in sequence to complete the installation. No complicated tools are required, which reduces the technical threshold for on-site installation, facilitates quick operation by workers, and improves the efficiency of sensor installation and maintenance.

[0027] 3. The radial contraction of the blade ring component not only firmly secures the insertion pipe, preventing axial and radial movement, but also blocks the medium passage through the tight fit between the blade ring component and the insertion pipe, through-hole, and connecting part. This achieves both fixation and sealing, improving installation efficiency and structural integration. The contraction amount of the blade ring component can be adjusted by the tightening degree of the connecting part and through-hole. As long as it is within the contraction range of the blade ring component, it can accommodate insertion pipes of different diameters. This increases the versatility of the device and reduces customization costs. The connecting part and through-hole are detachable. When it is necessary to replace the insertion pipe or maintain the blade ring component, only the connecting part needs to be disassembled without damaging the closed sidewall structure, reducing maintenance difficulty and minimizing the impact on the closed equipment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a through-type sensor locking device provided by this utility model;

[0029] Figure 2 This is a cross-sectional view of a through-type sensor locking device according to the first embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional view of the first locking component and the second locking component according to the first embodiment of the present utility model;

[0031] Figure 4 yes Figure 3 A schematic enlarged view of part A in the diagram;

[0032] Figure 5 yes Figure 3 A schematic enlarged view of part B in the diagram;

[0033] Figure 6 This is an exploded view of the first locking assembly and the second locking assembly according to the first embodiment of the present utility model;

[0034] Figure 7 This is an overall schematic diagram of a through-type sensor locking device according to the second embodiment of the present utility model;

[0035] Figure 8 This is a cross-sectional view of a through-type sensor locking device according to the second embodiment of the present invention;

[0036] Figure 9 This is an overall schematic diagram of a through-type sensor locking device according to the third embodiment of the present utility model;

[0037] Figure 10 This is an overall schematic diagram of a through-type sensor locking device according to the fourth embodiment of the present invention.

[0038] Figure label:

[0039] 1. First locking assembly;

[0040] 11. Shell; 11a. First chamber; 11b. Second chamber;

[0041] 12. Supporting member; 12a. Receiving chamber; 121. Pressing part; 121a. First thread; 122. Supporting part;

[0042] 13. Ball bearings;

[0043] 14. Elastic component; 141. Annular baffle; 142. Spring;

[0044] 15. Circular ring;

[0045] 16. Locking thread end; 16a. Second thread;

[0046] 2. Second locking assembly;

[0047] 21. Through section; 211. Through end; 211a. Third thread; 212. Mating end; 212a. First conical surface;

[0048] 22. Cutting ring component; 221. First cutting ring; 221a. Second arc surface; 221b. Second conical surface; 222. Second cutting ring;

[0049] 23. Connecting part; 231. Connecting end; 231a. First arc surface; 232. Locking end;

[0050] 3. Insert the tube;

[0051] 4. Sensor cables;

[0052] 5. Bend pipe structure;

[0053] 6. Protective cover;

[0054] 7. Corrugated pipe;

[0055] 100. Equipment to be tested; 101. Mounting plate; 102. Adapter plate. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0057] The accompanying drawings show schematic diagrams of layer structures according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0058] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0059] In the description of this utility model, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] Example 1:

[0061] Combination Figures 1 to 6 This embodiment provides a through-type sensor locking device, including a first locking component 1, a second locking component 2, a through-tube 3, and a sensor cable 4. The first locking component 1 is connected to the second locking component 2. The second locking component 2 is disposed through the closed side wall of the device to be tested 100. The through-tube 3 passes through the second locking component 2 along the inner side of the closed side wall. The sensor cable 4 passes through the first locking component 1, the second locking component 2, and the through-tube 3 in sequence and is connected to the sensor at the test position on the inner side of the closed side wall. One end of the through-tube 3 is connected to the test position. The first locking component 1 locks the sensor cable 4, and the second locking component 2 locks the through-tube and fixes the through-type sensor locking device on the device to be tested 100.

[0062] Specifically, the first locking component 1 provides unidirectional locking to the sensor cable 4, allowing the cable to pass through only the detection location while locked, preventing it from loosening during non-operational periods. The second locking component 2 fixes the insertion tube 3 to the enclosed side wall and locks it within the second locking component 2. After the locking device is installed, the position of the insertion tube 3 is fixed to ensure the relative position of the insertion tube 3 and the sensor cable 4. The insertion tube 3 serves as a protective channel for the sensor cable 4, transmitting the locking force of the second locking component 2 and preventing the cable from directly rubbing against the inner wall of the equipment. The sensor cable 4 transmits physical quantities at the detection location, such as temperature and pressure signals.

[0063] Furthermore, the second locking assembly 2 includes a through portion 21, a blade ring member 22, and a connecting portion 23; the through portion 21 is fixed to the closed side wall, and a first channel is provided inside the through portion 21 through which the insertion tube 3 passes; one end of the connecting portion 23 is detachably connected to the through portion 21, and a pressing space is formed between the connecting portion 23 and the through portion 21; the blade ring member 22 is disposed in the pressing space and is sleeved on the insertion tube 3; and the other end of the connecting portion 23 is connected to the first locking assembly 1.

[0064] Specifically, the through portion 21 is fixed to the closed sidewall, providing an insertion channel for the insertion tube 3, and cooperates with the connecting portion 23 to form a clamping space; the blade ring member 22 is axially compressed within the clamping space, and radially contracts to hold the insertion tube 3, achieving fixation and sealing; the connecting portion 23 is detachably connected to the through portion 21, transmitting locking force to the blade ring member 22, and simultaneously connecting the first locking assembly 1. The through portion 21 and the connecting portion 23 can be bonded, snap-fitted, or threaded. In the preferred embodiment, the through portion 21 and the connecting portion 23 are threaded. When the connecting portion 23 is tightened, the connecting portion 23 moves toward the through portion 21, compressing the clamping space. The blade ring member 22 is subjected to pressure within the space, radially contracts, and holds the insertion tube 3, completing the fixation and sealing of the insertion tube 3.

[0065] The specific structure of the sensor and the specific connection relationship between the sensor and the sensor cable 4 are not limited here. In optional cases, the sensor is directly installed inside the device under test 100, and a connection interface is provided for connecting to the sensor cable 4. When the sensor cable 4 is threaded through, it can be connected to the sensor through the connection interface. In preferred cases, the sensor is located at the end of the sensor cable 4, and the wiring is completed synchronously with the sensor cable. The sensor enters the device under test through the sensor cable 4, thus realizing the installation of the sensor.

[0066] With this configuration, the second locking component 2 penetrates the closed sidewall, forming a multi-layered seal with the closed sidewall, the second locking component 2, and the insertion tube 3, in conjunction with the isolation effect of the insertion tube 3. The chamber structure of the first locking component 1 also reduces the intrusion of external impurities, making it suitable for scenarios such as oil tanks and pressure vessels, effectively preventing oil and gas leaks. The second locking component 2 effectively restricts the movement of the insertion tube 3, ensuring the relative position of the sensor cable 4 and the insertion tube 3 after the sensor cable 4 is laid in the insertion tube 3, further improving the stability of the signal transmission of the sensor cable 4. Each component is modularly designed, and the first locking component 1 and the second locking component 2 are detachably connected. The insertion tube 3 is inserted into the second locking component 2 from the inside, and the sensor cable 4 is inserted sequentially to complete the installation. No complicated tools are required, lowering the technical threshold for on-site installation, facilitating quick operation by workers, and improving the efficiency of sensor installation and maintenance. The radial contraction of the blade ring component 22 not only firmly secures the insertion tube 3, preventing axial and radial movement, but also blocks the medium passage through the tight fit between the blade ring component 22, the insertion tube 3, the through-hole 21, and the connecting part 23. This simultaneous fixation and sealing improves installation efficiency and structural integration. The contraction amount of the blade ring component 22 can be adjusted by the tightening degree of the connecting part 23 and the through-hole 21. As long as it is within the contraction range of the blade ring component 22, it can accommodate insertion tubes 3 of different diameters. For example, the same set of second locking components 2 can accommodate insertion tubes 3 with diameters of φ8-12mm, increasing the versatility of the device and reducing customization costs. The connecting part 23 and the through-hole 21 are detachable. When it is necessary to replace the insertion tube 3 or maintain the blade ring component 22, only the connecting part 23 needs to be disassembled, without damaging the closed sidewall structure, reducing maintenance difficulty and minimizing the impact on the closed equipment.

[0067] In a preferred embodiment, the housing 11 of the first locking assembly 1 provides installation space for the abutment member 12, the ball bearing 13, and the elastic member 14, and connects to the second locking assembly 2; the abutment member 12 cooperates with the elastic member 14 to change the range of motion of the ball bearing 13 by sliding, thereby controlling the locking or releasing of the ball bearing 13 on the cable; the ball bearing 13 rolls in the receiving chamber 12a, and by utilizing the chamber's gradual change structure, the inner radial direction increases in the direction of the first chamber 11a, thereby achieving the compression locking or release of the cable; the elastic member 14 provides a restoring force to the abutment member 12, causing the receiving chamber 12a to automatically shrink, pushing the ball bearing 13 to compress the cable.

[0068] When the sensor cable 4 is inserted, the sensor cable 4 squeezes the ball bearing 13 or presses the holding member 12. The holding member 12 compresses the elastic member 14 and moves downward. Due to the gradual change in the inner diameter of the receiving chamber 12a and the connected second chamber 11b, the ball bearing 13 can roll outward, allowing the cable to pass through smoothly. After the holding member 12 is released, the restoring force of the elastic member 14 pushes the holding member 12 upward, reducing the size of the receiving chamber 12a. The ball bearing 13 is squeezed between the chamber wall and the sensor cable 4, achieving locking. At the same time, the second locking assembly 2, through the axial compression of its internal structure such as the blade ring member 22, causes the blade ring member 22 to radially contract and hug the insertion tube 3, completing the fixation and sealing of the insertion tube 3.

[0069] It should be noted that the connection method of the housing 11 and the second locking assembly 2 is not limited here; it can be adhesive, snap-fit, or screwed. In a preferred embodiment, the housing 11 and the second locking assembly 2 are screwed together, meaning that threads are provided on the outside of the housing 11 to match the threads on the inside of the second locking assembly 2. This simplifies assembly and facilitates internal component maintenance. The specific manner in which the receiving chamber 12a and the second chamber 11b communicate is also not limited, as long as space is provided for the ball bearing 13 to move when the elastic member 14 is pressed down. Figure 4 As shown, in an optional configuration, the abutment member 12 has a semi-open structure within the second chamber 11b, i.e. Figure 4 The left ball bearing 13 abuts against the inner wall of the receiving chamber 12a, while the right ball bearing 13 abuts directly against the inner wall of the second chamber 11b when tightened. When the holding member 12 is pressed down, the left ball bearing 13 maintains its current horizontal position and moves downward synchronously with the holding member 12. After moving downward, the right ball bearing 13 has sufficient space in the second chamber 11b to roll to the right simultaneously, thereby increasing the distance between the two ball bearings 13. It should be noted that the left and right sides are described here relative to... Figure 4 The specific structure can be configured with multiple balls 13, which are evenly distributed around the periphery of the receiving chamber 12a. The receiving chamber 12a and the second chamber 11b can be connected on one side, such as the right side opening, or multiple openings can be opened axially. This can provide some of the balls 13 with room to move during the threading or pressing process, so that the threading channel formed between the balls 13 can change.

[0070] With this configuration, the gradually changing inner diameter structure of the accommodating chamber 12a and the second chamber 11b, together with the ball bearing 13 and the elastic member 14, can continuously apply a circumferential locking force to the sensor cable 4. Regardless of whether the sensor cable 4 is subjected to axial tension or radial movement, the ball bearing 13 can provide a uniform and lasting clamping force through the compression of the equivalent conical surface of the gradually changing chamber, preventing the cable from loosening and ensuring uninterrupted sensor signal transmission.

[0071] In a preferred embodiment, the supporting member 12 includes a pressing part 121 and a supporting part 122. The pressing part 121 is slidably connected to the inlet at the top of the second chamber 11b, and the supporting part 122 is disposed in the second chamber 11b. The pressing part 121 is connected to the supporting part 122. The pressing part 121 has a hollow structure and communicates with the receiving chamber 12a.

[0072] Specifically, the pressing part 121 provides a force application point for the operator, and the sliding mechanism allows the supporting member 12 to move down or reset. It also features a hollow structure, directly serving as the insertion channel for the sensor cable 4. The supporting part 122 connects to the pressing part 121, forming a partial space within the second chamber 11b to accommodate the ball bearing 13, transmitting the force of the pressing part 121 to the elastic member 14. When the pressing part 121 is pressed, the force is transmitted to the elastic member 14 through the supporting part 122. The supporting part 122 moves down, compressing the elastic member 14. The accommodating chamber 12a is hollowly connected to the pressing part 121. The downward movement of the supporting part 122 increases the space size, causing the ball bearing 13 to roll outwards, allowing the cable to smoothly pass through or retract from the hollow part of the pressing part 121. After releasing the pressing part 121, the elastic member 14 pushes the supporting part 122 upwards. The supporting part 122 cooperates with the housing 11 to shrink the accommodating chamber 12a, and the ball bearing 13 squeezes the cable to achieve locking.

[0073] This design, with its hollow core and force-applying end, allows for simultaneous threading and pressing operations in the pressing section 121. Operators can hold the cable in one hand and press the pressing section 121 with the other, eliminating the need for additional alignment of the cable channel and significantly improving sensor installation efficiency. The pressing section 121 and the supporting section 122 can be securely connected using integral molding or threaded fastening, ensuring that the pressing force is evenly transmitted to the supporting section 122 and preventing it from tilting. This, in turn, ensures a uniform shape change in the receiving chamber 12a, resulting in a consistent circumferential distribution of the locking force of the ball bearings 13 on the cable, preventing damage due to excessive localized stress on the cable.

[0074] In a preferred embodiment, the elastic member 14 includes an annular baffle 141 and a spring 142. The annular baffle 141 abuts against the bottom of the abutment portion 122, the ball bearing 13 is disposed on the annular baffle 141, one end of the spring 142 is connected to the bottom of the annular baffle 141, and the other end of the spring 142 is connected to the bottom of the first chamber 11a.

[0075] Specifically, the annular baffle 141 carries the ball bearing 13 and serves as the bottom boundary of the receiving chamber 12a, uniformly transmitting the restoring force of the spring 142 to the ball bearing 13 and the supporting part 122. The spring 142 provides elastic restoring force, causing the annular baffle 141 and the supporting part 122 to automatically reset, pushing the ball bearing 13 to squeeze the cable. When the supporting part 122 is pressed, the supporting part 122 presses down on the annular baffle 141, and the annular baffle 141 compresses the spring 142. After being released, the spring 142 extends and pushes the annular baffle 141 upward, and the annular baffle 141 drives the supporting part 122 upward. At the same time, the ball bearing 13 is squeezed between the annular baffle 141 and the chamber wall, thereby locking the sensor cable 4.

[0076] It should be noted that the annular baffle 141 forms a threading channel for the sensor cable 4 at its center. The diameter of the threading channel is much smaller than the diameter of the ball bearing 13, while still meeting the threading requirements, to prevent the ball bearing 13 from entering the threading channel or blocking the top of the channel, thus affecting the passage of the sensor cable 4. In a preferred embodiment, a protrusion can also be provided on the outer periphery of the top of the threading channel to prevent the ball bearing 13 from rolling towards the center of the annular baffle 141.

[0077] With this design, the elastic restoring force of spring 142 is stable and adjustable. Stainless steel springs 142 of varying stiffness can be selected, ensuring that the annular baffle 141 and the supporting part 122 accurately return to the locked position after each press. Even in vibrating environments, such as near generator sets, it prevents a decrease in locking force due to insufficient elasticity, ensuring long-term stable cable locking. The planar structure of the annular baffle 141 allows the force of spring 142 to act evenly across the entire baffle, and then evenly transmit it to the supporting part 122 and the ball bearing 13. This ensures that the compression of the sensor cable 4 by the ball bearing 13 is circumferentially uniform, preventing deformation or insulation damage due to excessive local pressure, and extending the cable's service life.

[0078] In a preferred embodiment, a ring 15 is provided at the bottom of the first chamber 11a, and the spring 142 abuts against the bottom of the first chamber 11a through the ring 15.

[0079] Specifically, the ring 15 provides bottom support for the spring 142, positions the spring 142, and ensures that the spring 142 is subjected to axial force. One end of the spring 142 is fixed to the top of the ring 15, and the ring 15 is fixed to the bottom of the first chamber 11a, so that the restoring force of the spring 142 is concentrated on the central area of ​​the annular baffle 141, ensuring the stability of the annular baffle 141 when it moves upward and preventing tilting.

[0080] With this configuration, the ring 15 restricts the radial displacement of the spring 142, ensuring that the spring 142 remains centered in the first chamber 11a. For example, the ring 15 can be a coaxial annular structure with the first chamber 11a, with the spring 142 fixed to the top of the ring 15. This completely restricts the radial movement of the spring 142, ensuring that the force of the spring 142 on the annular baffle 141 is axial, preventing the annular baffle 141 from tilting and causing deformation of the receiving chamber 12a, and ensuring consistent locking force of the ball bearing 13 on the cable. The ring 15 also enhances the structural strength of the bottom of the first chamber 11a, reducing deformation caused by stress concentration at the bottom of the first chamber 11a under the long-term compression and extension cyclic load of the spring 142, ensuring the structural stability of the first locking assembly 1, and extending its service life.

[0081] In a preferred embodiment, the first locking assembly 1 further includes a locking head 16, a first thread 121a is formed on the outer peripheral side of the pressing part 121, and a second thread 16a is formed on the inner peripheral side of the locking head 16. The first thread 121a and the second thread 16a are adapted to each other, and the bottom diameter of the locking head 16 is larger than the top opening diameter of the second chamber 11b.

[0082] Specifically, the locking head 16 engages with the pressing part 121 via threads to fix the position of the abutting member 12, preventing accidental contact that could cause the abutting member 12 to slide. After the sensor cable 4 is locked, the locking head 16 is rotated, causing it to move towards the housing 11 through the engagement of the first thread 121a and the second thread 16a, until the bottom of the locking head 16 abuts against the top of the housing 11, restricting the downward movement of the pressing part 121 and thus fixing the position of the abutting member 12, allowing the ball bearing 13 to continuously lock the cable.

[0083] With this design, the locking head 16 can securely hold the retaining member 12 after locking, preventing the pressing part 121 from easily shifting down even under accidental impact or vibration, thus avoiding accidental release of the ball bearing 13. For example, when installing a sensor near industrial equipment with continuous vibration, the locking head 16 can effectively prevent the cable from loosening due to vibration, ensuring continuous monitoring. The additional locking force provided by the threaded connection, together with the restoring force of the elastic member 14, provides double protection, further enhancing the locking effect on the cable. Even if the elastic member 14 fatigues due to long-term use, the threaded connection can still maintain a locked state, preventing single-structure failure. When replacing the sensor, simply rotate the locking head 16 in the opposite direction to release the retaining member 12, without disassembling the entire device. This simplifies operation, reduces maintenance costs, and improves the convenience of sensor replacement.

[0084] In a preferred embodiment, the through portion 21 includes a through end 211 and a mating end 212; the outer wall of the through end 211 is provided with a third thread 211a, the third thread 211a is connected to the closed side wall, the mating end 212 is detachably connected to the connecting portion 23, a first conical surface 212a is formed between the through end 211 and the mating end 212, and the bottom of the blade ring member 22 abuts against the first conical surface 212a.

[0085] Specifically, the through end 211 is connected to the closed sidewall via a third thread 211a, fixing the second locking assembly 2; the mating end 212 forms a first conical surface 212a, providing bottom support and contraction guidance for the blade ring component 22. The through end 211 is fixed to the closed sidewall via the third thread 211a, and a sealing ring can be installed to further improve the sealing effect. The first conical surface 212a of the mating end 212 mates with the bottom of the blade ring component 22. When the connecting part 23 is tightened, the blade ring component 22 is subjected to axial pressure and slides along the first conical surface 212a, thereby radially contracting and gripping the insertion tube 3.

[0086] With this configuration, the connection between the third thread 211a, such as a tapered pipe thread, and the closed sidewall not only securely fixes the second locking assembly 2, but also enhances the sealing performance of the closed sidewall through threaded sealing. This is suitable for high-pressure, high-sealing oil tanks and pressure vessels, preventing media leakage from the threaded connection. The first tapered surface 212a provides precise guidance for the radial contraction of the blade ring component 22, allowing the blade ring component 22 to contract uniformly and smoothly towards the center under axial pressure. This ensures that the contact surface between the blade ring component 22 and the insertion tube 3 is uniform, improving the sealing and fixing effect and preventing damage to the blade ring component 22 due to excessive local stress.

[0087] In a preferred embodiment, the connecting portion 23 includes a connecting end 231 and a locking end 232. The connecting end 231 is detachably connected to the mating end 212, and the locking end 232 is connected to the first locking assembly 1. A first arc surface 231a is formed at the bottom of the connecting end 231, and the top of the blade ring member 22 abuts against the first arc surface 231a.

[0088] Specifically, the connecting end 231 mates with the mating end 212 to form a first arc surface 231a, providing a pressure transmission surface for the top of the blade ring member 22; the locking end 232 is connected to the housing 11, transmitting the installation force of the first locking assembly 1. The locking end 232 connects to the first locking assembly 1, ensuring that the first locking assembly 1 and the second locking assembly 2 form a stable whole. The first arc surface 231a of the connecting end 231 contacts the top of the blade ring member 22. When the connecting part 23 is tightened, the first arc surface 231a applies axial pressure to the blade ring member 22, which, in conjunction with the first conical surface 212a of the through end 211, causes the blade ring member 22 to contract radially under axial pressure.

[0089] With this configuration, the first arc surface 231a contacts the arc surface at the top of the blade ring component 22, which, compared to planar contact, distributes the axial pressure more evenly in the top region of the blade ring component 22. This avoids localized stress concentration in the blade ring component 22, extends its service life, and makes the blade ring component 22 contract more evenly, improving the clamping effect on the insertion tube 3. The arc surface design allows the blade ring component 22 to adjust its position within a certain range. Even if there is a slight eccentricity in the insertion tube 3, the first arc surface 231a can ensure uniform pressure transmission through its curvature adaptability. This reduces the installation accuracy requirements and increases the device's tolerance to installation errors. The connection between the locking end 232 and the housing 11 firmly fixes the first locking assembly 1, making the first locking assembly 1 and the second locking assembly 2 a stable whole. This prevents the first locking assembly 1 from loosening during use and ensures a stable locking effect on the sensor cable 4.

[0090] In a preferred embodiment, the cutting ring component 22 includes a first cutting ring 221 and a second cutting ring 222; the top of the first cutting ring 221 has a second arc surface 221a, which is adapted to the first arc surface 231a and the second arc surface 221a; the second cutting ring 222 is a hollow cone, and the bottom of the first cutting ring 221 has a second conical surface 221b, which is adapted to the inner conical surface of the second cutting ring 222 and the outer conical surface of the second cutting ring 222.

[0091] Specifically, the first cutting ring 221 engages with the first arc surface 231a of the connecting end 231 via the second arc surface 221a to transmit top pressure; it engages with the second cutting ring 222 via the second conical surface 221b to guide the second cutting ring 222 to contract. The second cutting ring 222 engages with the second conical surface 221b of the first cutting ring 221 via its inner conical surface, and with the first conical surface 212a of the through end 211 via its outer conical surface, achieving radial contraction to grip the insertion tube 3. When the connecting part 23 is tightened, the first arc surface 231a presses against the second arc surface 221a of the first cutting ring 221, and the first cutting ring 221 moves downward and presses against the inner conical surface of the second cutting ring 222 via the second conical surface 221b; simultaneously, the outer conical surface of the second cutting ring 222 slides along the first conical surface 212a of the through end 211. The double conical surface engagement causes the second cutting ring 222 to contract radially quickly and evenly, gripping the insertion tube 3.

[0092] With this configuration, the double-conical surfaces of the first cutting ring 221 and the second cutting ring 222 engage to form a double-guided contraction structure. Compared to the single-cutting ring component 22, the second cutting ring 222 has a larger contraction amount and a more uniform clamping force, which can better adapt to the insertion pipe 3 of different diameters and improve the sealing effect. As an intermediate transmission component, the first cutting ring 221 can buffer the direct pressure between the connecting end 231 and the second cutting ring 222, preventing the second cutting ring 222 from being damaged by direct force. At the same time, the arc surface and conical surface of the first cutting ring 221 can disperse pressure and extend the overall service life of the cutting ring component 22. The engagement of the first cutting ring 221 and the second cutting ring 222, as well as the engagement of the second cutting ring 222 with the through end 211 and the insertion pipe 3, forms a multi-layer sealing structure. Even if a minor leak occurs in one layer, the other layers can still seal, greatly improving the sealing reliability of the second locking component 2, making it suitable for scenarios with extremely high sealing requirements, such as chemical pressure vessels.

[0093] Example 2:

[0094] Combination Figure 7 and Figure 8 The first locking assembly 1 and the second locking assembly 2 are connected by the bent tube structure 5. The sensor cable 4 passes through the first locking assembly 1, the bent tube structure 5, the second locking assembly 2 and the insertion tube 3 in sequence and is connected to the detection position on the inside of the closed side wall. One end of the insertion tube 3 is connected to the detection position.

[0095] Specifically, the bend structure 5 changes the insertion direction of the sensor cable 4 to adapt to complex installation spaces. The sensor cable 4 passes through the first locking assembly 1, the bend structure 5, the second locking assembly 2, and the insertion tube 3 in sequence. The bending shape of the bend structure 5 allows the cable to bypass obstacles and enter the interior of the enclosed sidewall from a more suitable angle.

[0096] It should be noted that the specific connection method between the two ends of the bent pipe structure 5 and the first locking component 1 and the second locking component 2 is not limited here. It can be a threaded connection or a snap-fit ​​connection, etc.

[0097] This design allows the bend structure 5 to adapt to complex spatial layouts outside enclosed equipment. For example, in areas with limited space at the top of enclosed equipment, a 90° bend can be used to route the cable from the side, avoiding interference with other components and eliminating the need to change the device's installation position on the enclosed sidewall, thus improving its applicability to various scenarios. The bend structure 5 also protects the bent sections of the sensor cable 4, preventing direct large-angle bends. The curved channel of the bend ensures that the cable's bending radius meets requirements, protecting the cable's insulation and internal conductors, and extending the cable's lifespan. The bend structure 5 is detachably connected to the first locking assembly 1 and the second locking assembly 2, using methods such as threaded connections or quick-connect snap-fit ​​connections. During installation, different angles can be selected based on the actual space, such as 45° or 90°. It can also be an adjustable-angle flexible hose structure, further enhancing the device's installation flexibility and adaptability.

[0098] Example 3:

[0099] Combination Figure 9 This embodiment provides a through-type sensor locking device, including a first locking component 1, a second locking component 2, a through-tube 3, a sensor cable 4, a protective cover 6, and a corrugated tube 7. The first locking component 1 and the second locking component 2 are directly connected. The corrugated tube 7 is sleeved on the outside of the sensor cable 4 outside the device to be tested 100. The protective cover 6 is located on the outside of the locking device. The sensor cable 4 enters from the top of the protective cover 6 and passes through the first locking component 1, the second locking component 2, and the through-tube 3. The corrugated tube 7 and the protective cover 6 protect the external cable from collision and friction.

[0100] Example 4:

[0101] Combination Figure 10 This embodiment provides a through-type sensor locking device, which includes multiple locking devices. The multiple locking devices are mounted on the mounting plate 101 of the device to be tested 100 via an adapter plate 102.

[0102] The sensor cable 4 of each channel enters the interior of the device under test 100 through its respective first locking component 1 and second locking component 2; the adapter plate 102 realizes the centralized installation of multiple sensors, which facilitates management and wiring and improves the installation efficiency of multi-sensor monitoring scenarios.

[0103] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A through-type sensor locking device, characterized in that, The through-type sensor locking device includes a first locking component (1), a second locking component (2), an insertion tube (3), and a sensor cable (4). The first locking component (1) is connected to the second locking component (2). The second locking component (2) is disposed through the closed side wall of the device to be tested (100). The insertion tube (3) passes through the second locking component (2) along the inner side of the closed side wall. The sensor cable (4) passes through the first locking component (1), the second locking component (2), and the insertion tube (3) in sequence and is connected to the sensor at the position to be tested on the inner side of the closed side wall. One end of the insertion tube (3) is connected to the position to be tested. The first locking component (1) locks the sensor cable (4), and the second locking component (2) locks the insertion tube and fixes the insertion sensor locking device on the device to be tested (100). The second locking assembly (2) includes a through portion (21), a blade ring member (22), and a connecting portion (23); The through part (21) is fixed to the closed side wall. The inside of the through part (21) is provided with a first channel through which the insertion tube (3) passes. One end of the connecting part (23) is detachably connected to the through part (21). A pressing space is formed between the connecting part (23) and the through part (21). The blade ring component (22) is disposed in the pressing space and is sleeved on the insertion tube (3). The other end of the connecting part (23) is connected to the first locking component (1).

2. The insertion-type sensor locking device according to claim 1, characterized in that, The first locking assembly (1) includes a housing (11), a holding member (12), a ball (13), and an elastic member (14). The housing (11) is connected to the second locking assembly (2). A first chamber (11a) and a second chamber (11b) are formed inside the housing (11). The first chamber (11a) and the second chamber (11b) are in communication. The holding member (12) is slidably connected to the inlet at the top of the second chamber (11b). The elastic member (14) is located inside the second chamber (11b). The holding member (12) abuts against the elastic member (14) and forms a receiving chamber (12a). The receiving chamber (12a) is in communication with the second chamber (11b). The ball (13) is located inside the receiving chamber (12a). The inner diameter of the receiving chamber (12a) and the inner diameter of the second chamber (11b) gradually increase in the direction of the first chamber (11a).

3. The insertion-type sensor locking device according to claim 2, characterized in that, The supporting member (12) includes a pressing part (121) and a supporting part (122). The pressing part (121) is slidably connected to the inlet at the top of the second chamber (11b). The supporting part (122) is disposed in the second chamber (11b). The pressing part (121) is connected to the supporting part (122). The pressing part (121) has a hollow structure and communicates with the receiving chamber (12a).

4. The insertion-type sensor locking device according to claim 3, characterized in that, The elastic member (14) includes an annular baffle (141) and a spring (142). The annular baffle (141) abuts against the bottom of the supporting part (122). The ball (13) is disposed on the annular baffle (141). One end of the spring (142) is connected to the bottom of the annular baffle (141), and the other end of the spring (142) is connected to the bottom of the first chamber (11a).

5. The insertion sensor locking device according to claim 4, characterized in that, The bottom of the first chamber (11a) is provided with a ring (15), and the spring (142) abuts against the bottom of the first chamber (11a) through the ring (15).

6. The insertion sensor locking device according to claim 4, characterized in that, The first locking assembly (1) further includes a locking head (16), a first thread (121a) is formed on the outer peripheral side of the pressing part (121), and a second thread (16a) is formed on the inner peripheral side of the locking head (16). The first thread (121a) and the second thread (16a) are adapted to each other, and the bottom diameter of the locking head (16) is larger than the top opening diameter of the second chamber (11b).

7. The insertion-type sensor locking device according to claim 1, characterized in that, The through portion (21) includes a through end (211) and a mating end (212); The outer wall of the through end (211) is provided with a third thread (211a), the third thread (211a) is connected to the closed side wall, the mating end (212) is detachably connected to the connecting part (23), a first conical surface (212a) is formed between the through end (211) and the mating end (212), and the bottom of the blade ring member (22) abuts against the first conical surface (212a).

8. The insertion sensor locking device according to claim 7, characterized in that, The connecting part (23) includes a connecting end (231) and a locking end (232). The connecting end (231) is detachably connected to the mating end (212). The locking end (232) is connected to the first locking assembly (1). The bottom of the connecting end (231) forms a first arc surface (231a). The top of the blade ring member (22) abuts against the first arc surface (231a).

9. The insertion sensor locking device according to claim 8, characterized in that, The blade ring component (22) includes a first blade ring (221) and a second blade ring (222); The top of the first blade ring (221) is formed with a second arc surface (221a), and the first arc surface (231a) and the second arc surface (221a) are adapted to each other; The second cutting ring (222) is a hollow cone, and the bottom of the first cutting ring (221) has a second conical surface (221b). The inner conical surface of the second cutting ring (222) is adapted to the second conical surface (221b), and the outer conical surface of the second cutting ring (222) is adapted to the first conical surface (212a).

10. The insertion-type sensor locking device according to claim 1, characterized in that, The first locking assembly (1) and the second locking assembly (2) are connected by a bent tube structure (5). The sensor cable (4) passes through the first locking assembly (1), the bent tube structure (5), the second locking assembly (2) and the insertion tube (3) in sequence and is connected to the detection position on the inner side of the closed sidewall. One end of the insertion tube (3) is connected to the detection position.

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