A wave detection collector
By designing a seismic acquisition instrument with a closed installation cavity and an adjustable movable rod, the problems of cumbersome equipment installation and difficult leveling in tunnel construction were solved, achieving efficient and stable seismic signal acquisition and adapting to the complex environment of tunnels.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POWERCHINA ZHONGNAN ENG
- Filing Date
- 2026-06-22
- Publication Date
- 2026-07-24
AI Technical Summary
Existing tunnel geological advance prediction detection equipment is cumbersome to install and fix, difficult to level, and lacks portability and signal acquisition accuracy, making it unsuitable for the uneven construction conditions of tunnel faces.
Design a detector acquisition instrument that includes a mounting box and a cover. It adopts a closed mounting cavity structure, is equipped with an adjustable movable rod and a waterproof mounting structure, so as to achieve rapid leveling and sealing protection, and simplify the installation and disassembly process.
It improves the stability and accuracy of seismic wave signal acquisition, simplifies the construction process, enhances on-site construction efficiency and equipment portability, and adapts to complex tunnel environments.
Smart Images
Figure CN122449580A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of geological prediction technology for tunnel construction, and in particular, to a wave detector. Background Technology
[0002] With the continuous expansion of underground engineering construction in my country, such as tunnels and underground caverns, the geological conditions during construction are complex and variable, and adverse geological disasters such as mudslides, water inrushes, and fault fracture zones occur frequently. Geological advance prediction has become a core technology for ensuring the safety of underground engineering construction and optimizing construction techniques and support schemes. Among various geological advance prediction methods, the elastic wave reflection method, with its advantages of high detection accuracy and wide applicability, is widely used in the stratigraphic division of tunnel faces, the detection of hidden structures and water-bearing caves. As the core device for receiving waves in the elastic wave reflection method, the installation coupling, leveling accuracy, and disassembly efficiency of the geophysical advance prediction data acquisition instrument directly determine the quality of geological advance prediction data acquisition and the efficiency of on-site construction.
[0003] Existing traditional tunnel geological advance prediction acquisition and detection equipment mainly has two installation and fixing methods: one relies on fixatives such as plaster and anchoring agents to achieve coupling with the surrounding rock, which requires a long time to wait for curing and the equipment leveling and subsequent disassembly operations are cumbersome, seriously affecting the construction progress; the other uses a drilled embedded cylindrical detector, which requires drilling a large-diameter blast hole 30-50cm deep at the tunnel face and using the outer spring to support the hole wall to achieve coupling. Not only is the drilling construction process complicated and time-consuming, but the overall weight of the equipment is large, its portability is poor, and the horizontal attitude adjustment is difficult. Moreover, most of them are wired connections, which are cumbersome to install, and the on-site wiring, disassembly and transportation workload is large.
[0004] Meanwhile, existing conventional detectors and acquisition instruments are mostly of a split structure with low integration and lack convenient mechanical multi-point leveling structure, making it difficult to quickly adapt to the uneven construction conditions of tunnel faces and unable to quickly and accurately adjust the equipment posture to ensure the accuracy of seismic wave signal acquisition. Summary of the Invention
[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a detector acquisition instrument.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A detector acquisition device includes: a mounting box with a mounting groove having a front opening; a box cover connected to the front of the mounting box to close the front of the mounting groove and define a mounting cavity with the mounting box, the mounting cavity being used to mount a detector sensor; and at least three movable rods mounted on the mounting box and adjustable in the front-rear direction relative to the mounting box to adjust the length of the rear end of the movable rod protruding from the mounting box.
[0007] Furthermore, it also includes a waterproof installation structure, one end of which is connected to the rear side wall of the installation groove, and the other end of which is connected to the box cover. The waterproof installation structure has a through-hole formed in the center, which is used for expansion bolts to pass through. The waterproof installation structure separates the installation cavity from the through-hole.
[0008] Furthermore, the waterproof installation structure includes a rear cylinder and a connecting sleeve; the rear cylinder is connected to the rear side wall of the installation groove; the rear end of the connecting sleeve is fitted onto the rear cylinder, and the front end is connected to the box cover.
[0009] Furthermore, the docking sleeve includes a main sleeve and a positioning protrusion. The outer diameter of the positioning protrusion is smaller than that of the main sleeve. The positioning protrusion is coaxially connected to the front end of the main sleeve. The box cover is provided with a positioning hole for the positioning protrusion to be inserted. The main sleeve abuts against the rear side of the box cover. A first sealing ring is sleeved on the outer periphery of the positioning protrusion. The first sealing ring is sandwiched between the main sleeve and the box cover.
[0010] Furthermore, the rear side edge of the box cover is provided with a positioning groove, the front side edge of the mounting box is provided with a positioning protrusion embedded in the positioning groove, the outer peripheral edge of the front end of the mounting box is provided with an inwardly recessed avoidance annular step, and the outer peripheral edge of the box cover is provided with a positioning annular plate that cooperates with the inwardly recessed avoidance annular step.
[0011] Furthermore, the movable rod is threadedly connected to the mounting box to achieve position adjustment in the front-to-back direction.
[0012] Furthermore, the mounting box has a clearance notch corresponding to the position of the movable rod, the rear side wall of the clearance notch has a first threaded hole, the movable rod is threaded to the first threaded hole, and a screw head is fixedly connected to the position of the movable rod corresponding to the clearance notch.
[0013] Furthermore, the front sidewall of the clearance notch is provided with a second threaded groove, the movable rod is threadedly connected to the second threaded groove, the front end wall of the second threaded groove is provided with a first through hole, the cover is provided with a second threaded hole corresponding to the first through hole, the first through hole and the second threaded hole are aligned and fastening screws are installed.
[0014] Furthermore, the mounting box has a clearance notch corresponding to the position of the movable rod. The rear side wall of the clearance notch has a first threaded hole, and the front side wall of the clearance notch has a circular groove with a diameter larger than the first threaded hole. A screw head is fixedly connected to the position of the movable rod corresponding to the clearance notch, and a connector is threadedly connected to the position of the movable rod corresponding to the clearance notch. The front end wall of the circular groove has a second through hole, and the box cover has a second threaded hole corresponding to the second through hole. The connector has a cylinder embedded in the circular groove, and a stud is provided at the front end of the cylinder. The stud passes through the second through hole and is threadedly connected to the second threaded hole.
[0015] Furthermore, the diameters of the connector, cylinder, and stud decrease sequentially, and when the front end face of the connector abuts against the front sidewall of the clearance notch, the front end face of the cylinder abuts against the front end wall of the circular slot.
[0016] The present invention has the following beneficial effects: By using a mounting box with a mounting slot and a sealed cover to enclose the slot, a closed mounting cavity is formed, allowing the entire geophone sensor to be internally housed. This design provides excellent structural protection, making it suitable for the complex, humid, and dusty construction environment of tunnels. It effectively protects the internal geophone sensor from interference from on-site conditions, ensuring the stability of seismic signal acquisition. Simultaneously, the mounting box is equipped with at least three adjustable rods. By changing the length of the rods protruding from the mounting box, multi-point support and fine-tuning can be performed according to the uneven terrain of the tunnel face, quickly completing the overall machine's leveling without relying on plaster, anchoring agents, or other curing materials, nor requiring the drilling of large-diameter deep blast holes. This eliminates curing time and large-diameter drilling procedures, making installation, leveling, and disassembly simple and quick, improving the efficiency of on-site geological forecasting.
[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description
[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the decomposed state structure; Figure 3 yes Figure 2 Another structural diagram from a different perspective; Figure 4 yes Figure 1 A cross-sectional view of the waterproof installation structure; Figure 5 yes Figure 4 A partially exploded sectional view of the structure; Figure 6 This is a cross-sectional view of the movable rod in one embodiment of the present invention; Figure 7 This is a partial cross-sectional view of the movable rod according to another embodiment of the present invention; Figure 8 yes Figure 7 A schematic diagram of the decomposed state structure.
[0019] Legend: Mounting box 100, mounting groove 110, mounting cavity 101, expansion bolt 102, fastening nut 103, positioning convex ring 120, inwardly recessed avoidance annular step 130, avoidance notch 140, first threaded hole 141, second threaded groove 142, first through hole 143, round hole groove 144, second through hole 145; Box cover 200, positioning hole 210, positioning groove 220, positioning ring plate 230, second threaded hole 240; 300 movable lever, 310 screw head; Waterproof installation structure 400, installation through hole 401, rear cylinder 410, connecting sleeve 420, main sleeve 421, positioning protrusion 422, first sealing ring 423; Connector 500, cylinder 510, stud 520. Detailed Implementation
[0020] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0023] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.
[0024] Please refer to Figure 1 and Figure 2 A preferred embodiment of the present invention provides a detector acquisition instrument, which includes a mounting box 100, a box cover 200, and a movable rod 300.
[0025] The mounting box 100 has a mounting slot 110 with a front opening.
[0026] The cover 200 is connected to the front of the mounting box 100 to close the front of the mounting groove 110 and define a mounting cavity 101 with the mounting box 100. The mounting cavity 101 is used to install the detection sensor. Typically, three detection sensors are installed, arranged in pairs perpendicular to each other, to receive seismic waves in the X, Y, and Z directions. The mounting box 100 and the cover 200 have holes at their centers for expansion bolts 102 to pass through. The expansion bolts 102, together with the fastening nuts 103, are fixed to the working face. Installing the expansion bolts 102 only requires drilling a small-diameter hole, simplifying the installation process.
[0027] At least three movable rods 300 are provided. The movable rods 300 are installed in the mounting box 100 and can be adjusted in the front-back direction relative to the mounting box 100 to adjust the length of the rear end of the movable rod 300 protruding from the mounting box 100.
[0028] This invention provides a seismic acquisition instrument. By using a mounting box 100 with a mounting groove 110 and a box cover 200 that seals the mounting groove 110, a closed mounting cavity 101 is formed. This allows for the internal housing of the seismic sensor, providing excellent structural protection and adapting to the complex, humid, and dusty construction environment of tunnels. It effectively protects the internal seismic sensor from interference from on-site conditions, ensuring the stability of seismic signal acquisition. Simultaneously, the mounting box 100 is equipped with at least three adjustable movable rods 300. By changing the length of the rear end of the movable rods 300 protruding from the mounting box 100, multi-point support and fine-tuning can be performed according to the uneven terrain of the tunnel face, quickly completing the overall machine's posture leveling. This eliminates the need for curing materials such as plaster and anchoring agents, and also eliminates the need for drilling large-diameter deep blast holes. It saves on curing time and large-size drilling procedures, making installation, leveling, and disassembly simple and quick, improving the efficiency of on-site geological forecasting. The housing structure of the mounting box 100 and the cover 200 is well-organized. Combined with the mechanically adjustable support structure of the movable rod 300, the whole machine is compact and highly portable. It does not require complicated wiring to adapt to on-site operations, effectively solving the technical pain points of traditional equipment such as difficulty in leveling, poor coupling effect, cumbersome construction and inconvenient transportation. It significantly improves the signal acquisition accuracy and on-site adaptability of the detector sensor.
[0029] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments of the present invention, a waterproof mounting structure 400 is also included. One end of the waterproof mounting structure 400 is connected to the rear side wall of the mounting groove 110, and the other end is connected to the cover 200. A through mounting hole 401 is formed in the center of the waterproof mounting structure 400, which is used for the expansion bolt 102 to pass through. The waterproof mounting structure 400 separates the mounting cavity 101 from the mounting hole 401. The waterproof mounting structure 400 can quickly fix the entire machine to the tunnel face using the expansion bolt 102 without the need for anchoring agent curing or deep hole embedded installation. At the same time, the waterproof mounting structure 400 separates the mounting cavity 101 from the mounting hole 401, which can prevent water seepage from the tunnel face and dust from entering the interior of the mounting cavity 101 through the mounting hole 401. This effectively improves the overall sealing, waterproofing, and dustproofing capabilities of the data acquisition instrument, protects the detector sensor and circuit components inside the mounting cavity 101, and adapts to the humid and dusty construction environment of the tunnel.
[0030] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 In a further embodiment of the present invention, the waterproof installation structure 400 includes a rear cylinder 410 and a connecting sleeve 420. The rear cylinder 410 is connected to the rear side wall of the mounting groove 110. The rear cylinder 410 and the mounting box 100 are integrally molded, reducing the number of parts and installation steps, as well as reducing installation gaps at the connection and reducing water seepage. The rear end of the connecting sleeve 420 is fitted onto the rear cylinder 410, and the front end is connected to the box cover 200. The waterproof installation structure 400 adopts a segmented fitting combination structure of the rear cylinder 410 and the connecting sleeve 420. The rear cylinder 410 is fixed to the rear side wall of the mounting groove 110, and the front end of the connecting sleeve 420 is connected to the box cover 200. The assembly alignment is simple and the structure has good coaxiality. The fitting assembly method facilitates production assembly and subsequent disassembly and maintenance, while forming a continuous and sealed channel that runs through both ends, ensuring that the expansion bolts 102 can be smoothly installed and fixed, and ensuring the sealing protection of the middle part of the shell.
[0031] Reference Figure 4 and Figure 5In a further embodiment of the present invention, the docking sleeve 420 includes a main sleeve 421 and a positioning protrusion 422. The outer diameter of the positioning protrusion 422 is smaller than that of the main sleeve 421. The positioning protrusion 422 is coaxially connected to the front end of the main sleeve 421. The box cover 200 is provided with a positioning hole 210 for the positioning protrusion 422 to be inserted. The main sleeve 421 abuts against the rear side of the box cover 200. A first sealing ring 423 is sleeved on the outer periphery of the positioning protrusion 422. The first sealing ring 423 is sandwiched between the main sleeve 421 and the box cover 200. The positioning protrusion 422 is inserted into the positioning hole 210 of the cover 200 to achieve precise positioning and limit, avoiding misalignment of the cover 200 during assembly; the end face of the main sleeve 421 fits against the rear side of the cover 200, and together with the first sealing ring 423 sleeved on the outer circumference of the positioning protrusion 422, a reliable sealing and waterproof layer can be formed at the joint between the sleeve and the cover 200, preventing moisture and dust from entering the installation cavity 101, further improving the waterproof sealing performance of the whole machine, and ensuring the working stability of the internal sensors and electronic components.
[0032] Reference Figure 5 In a further embodiment of the present invention, the rear side edge of the cover 200 is provided with a positioning groove 220, the front edge of the mounting box 100 is provided with a positioning protrusion 120 embedded in the positioning groove 220, the outer peripheral edge of the front end of the mounting box 100 is provided with an inwardly recessed anular step 130, and the outer peripheral edge of the cover 200 is provided with a positioning annular plate 230 that cooperates with the inwardly recessed anular step 130. The positioning groove 220 of the cover 200 and the positioning protrusion 120 on the front edge of the mounting box 100 are mutually engaged and aligned, realizing precise circumferential assembly and positioning of the mounting box 100 and the cover 200, preventing misassembly and offset. In addition, a sealing ring can be set in the positioning groove 220 to further improve the sealing performance. The inwardly recessed anular step 130 at the front end of the mounting box 100 cooperates with the positioning annular plate 230 of the cover 200 to achieve circumferential wrapping docking, increasing the contact area of the mating surface, improving the overall structural rigidity and splicing sealing of the shell, and providing better dustproof and waterproof effects. At the same time, the assembly and alignment are quick and the overall integrity is stronger.
[0033] Reference Figure 3 In a further embodiment of the present invention, the movable rod 300 is threadedly connected to the mounting box 100 to achieve position adjustment in the front-to-back direction. The movable rod 300 is assembled on the mounting box 100 by a threaded connection, and the extension length of its rear end protruding from the mounting box 100 can be precisely adjusted by rotating the movable rod 300, achieving stepless fine adjustment; relying on the independent telescopic adjustment of at least three movable rods 300, it can adapt to the uneven slope of the tunnel face, quickly complete the leveling of the whole machine, without the need for additional leveling accessories, with high adjustment accuracy, simple operation, and effectively improve the accuracy of seismic wave signal acquisition.
[0034] Reference Figure 3 and Figure 6In a further embodiment of the present invention, the mounting box 100 is provided with a clearance notch 140 corresponding to the position of the movable rod 300, and the rear side wall of the clearance notch 140 is provided with a first threaded hole 141. The movable rod 300 is threadedly connected to the first threaded hole 141, and a screw head 310 is fixedly connected to the movable rod 300 at the position corresponding to the clearance notch 140. It can be understood that, for ease of installation, the screw head 310 is threadedly connected to the movable rod 300 and fixed by a set screw on the peripheral wall. Installation is achieved through a detachable structure to avoid structural interference that would affect installation if the screw head 310 could not pass through the first threaded hole 141. The mounting box 100 has a clearance notch 140 at the position corresponding to the movable rod 300 to accommodate the screw head 310, thereby exposing the screw head 310 and reserving space for rotation operation; the first threaded hole 141 forms a stable threaded connection with the movable rod 300, and with the screw head 310 fixed on the movable rod 300, the operator can directly rotate the screw head 310 to realize the extension and retraction leveling of the movable rod 300 without the need for additional tools. The on-site leveling operation is convenient and efficient, and the structure layout is compact.
[0035] Reference Figure 3 and Figure 6 In a further embodiment of the present invention, the front sidewall of the clearance notch 140 is provided with a second threaded groove 142, and the movable rod 300 is partially threaded to the second threaded groove 142. The front end wall of the second threaded groove 142 is provided with a first through hole 143, and the cover 200 is provided with a second threaded hole 240 corresponding to the first through hole 143. The first through hole 143 and the second threaded hole 240 are aligned and fastening screws are installed. The second threaded groove 142 on the front sidewall of the clearance notch 140 forms a double threaded connection structure for the movable rod 300, which improves the assembly stability of the movable rod 300 and avoids the movable rod 300 from loosening and displacement due to tunnel construction vibration. The first through hole 143 and the second threaded hole 240 are aligned and locked by fastening screws to securely fix the mounting box 100 and the cover 200.
[0036] Reference Figure 7 and Figure 8In other embodiments of the present invention, the mounting box 100 is provided with a clearance notch 140 corresponding to the position of the movable rod 300. The rear sidewall of the clearance notch 140 is provided with a first threaded hole 141, and the front sidewall of the clearance notch 140 is provided with a circular groove 144. The diameter of the circular groove 144 is larger than that of the first threaded hole 141. A screw head 310 is fixedly connected to the position of the movable rod 300 corresponding to the clearance notch 140, and a connector 500 is threadedly connected to the position of the movable rod 300 corresponding to the clearance notch 140. The front wall of the circular slot 144 is provided with a second through hole 145. The cover 200 is provided with a second threaded hole 240 corresponding to the second through hole 145. The connector 500 is provided with a cylinder 510 embedded in the circular slot 144. The diameter of the central hole of the cylinder 510 is larger than the diameter of the movable rod 300. The outer diameter of the cylinder 510 is adapted to the circular slot 144 to achieve positioning. The front end of the cylinder 510 is provided with a stud 520. The stud 520 passes through the second through hole 145 and is threadedly connected to the second threaded hole 240. The movable rod 300 is threaded onto the outer side of the connector 500. The cylindrical part 510 of the connector 500 is embedded in the circular groove 144 for radial positioning. The front stud 520 passes through the second through hole 145 and is locked to the second threaded hole 240 of the cover 200. This not only ensures a stable assembly between the mounting box 100 and the cover 200, but also provides front-end support and limitation for the movable rod 300. This improves the overall structural vibration resistance and assembly integrity. Furthermore, the integrated structure of the connector 500, the cylindrical part 510, and the stud 520 can be rotated. The connector 500 exposed at the clearance notch 140 allows for the disassembly of the mounting box 100 and the cover 200. This allows the cover 200 to be removed without disassembling the movable rod 300, thus meeting the requirement that only the cover 200 needs to be removed after installation and fixation on the working face. This avoids the need to disassemble the movable rod 300 and other related structures when the cover 200 needs to be removed, which makes the disassembly and installation process cumbersome and time-consuming. It is understandable that the stud 520 and the movable rod 300 have the same thread pitch on their outer circumferences.
[0037] Reference Figure 7 and Figure 8 In other embodiments of the present invention, the diameters of the connector 500, cylinder 510, and stud 520 decrease sequentially. When the front end face of the connector 500 abuts against the front sidewall of the clearance notch 140, the front end face of the cylinder 510 abuts against the front end wall of the circular groove 144. The connector 500, cylinder 510, and stud 520 adopt a stepped structure with progressively decreasing diameters, which facilitates step-by-step insertion and alignment assembly. When the front end face of the connector 500 abuts against the front sidewall of the clearance notch 140 and the front end face of the cylinder 510 abuts against the front end wall of the circular groove 144, a double end face limiting structure is formed. Tightening the connector 500 also has a pre-tightening and anti-loosening effect on the movable rod 300. Thus, the connector 500 has multiple technical effects, including limiting and positioning support for the movable rod 300, facilitating the disassembly of the cover 200, and pre-tightening and anti-loosening of the movable rod 300.
[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A detector acquisition instrument, characterized in that, include: The mounting box (100) has a mounting slot (110) with a front opening. A cover (200) is attached to the front side of the mounting box (100) to close the front side of the mounting groove (110) and define a mounting cavity (101) with the mounting box (100), the mounting cavity (101) being used to mount a detector sensor; At least three movable rods (300) are provided, which are installed in the mounting box (100) and can be adjusted in the front-back direction relative to the mounting box (100) to adjust the length of the rear end of the movable rod (300) protruding from the mounting box (100).
2. The detector acquisition instrument according to claim 1, characterized in that, It also includes a waterproof installation structure (400), one end of which is connected to the rear side wall of the installation groove (110) and the other end is connected to the cover (200). The waterproof installation structure (400) has a through-hole (401) at its center, which is used for the expansion bolt (102) to pass through. The waterproof installation structure (400) separates the installation cavity (101) from the installation through-hole (401).
3. The detector acquisition instrument according to claim 2, characterized in that, The waterproof installation structure (400) includes a rear sleeve (410) and a connecting sleeve (420). The rear cylinder (410) is connected to the rear side wall of the mounting groove (110); the rear end of the docking sleeve (420) is fitted onto the rear cylinder (410), and the front end is connected to the box cover (200).
4. The detector acquisition instrument according to claim 3, characterized in that, The docking sleeve (420) includes a main sleeve (421) and a positioning protrusion (422). The outer diameter of the positioning protrusion (422) is smaller than that of the main sleeve (421). The positioning protrusion (422) is coaxially connected to the front end of the main sleeve (421). The box cover (200) is provided with a positioning hole (210) for the positioning protrusion (422) to be inserted. The main sleeve (421) abuts against the rear side of the box cover (200). A first sealing ring (423) is sleeved on the outer periphery of the positioning protrusion (422). The first sealing ring (423) is sandwiched between the main sleeve (421) and the box cover (200).
5. The detector acquisition instrument according to claim 1, characterized in that, The rear side edge of the box cover (200) is provided with a positioning groove (220), the front side edge of the mounting box (100) is provided with a positioning protrusion (120) embedded in the positioning groove (220), the outer peripheral edge of the front end of the mounting box (100) is provided with an inwardly recessed avoidance annular step (130), and the outer peripheral edge of the box cover (200) is provided with a positioning annular plate (230) that cooperates with the inwardly recessed avoidance annular step (130).
6. The detector acquisition instrument according to claim 1, characterized in that, The movable rod (300) is threaded to the mounting box (100) to achieve position adjustment in the front and rear directions.
7. The detector acquisition instrument according to claim 6, characterized in that, The mounting box (100) has a clearance notch (140) at the position corresponding to the movable rod (300). The rear side wall of the clearance notch (140) has a first threaded hole (141). The movable rod (300) is threaded to the first threaded hole (141). A screw head (310) is fixedly connected to the position of the movable rod (300) corresponding to the clearance notch (140).
8. The detector acquisition instrument according to claim 7, characterized in that, The front side wall of the clearance notch (140) is provided with a second threaded groove (142), and the movable rod (300) is partially threaded to the second threaded groove (142). The front end wall of the second threaded groove (142) is provided with a first through hole (143). The cover (200) is provided with a second threaded hole (240) corresponding to the first through hole (143). The first through hole (143) and the second threaded hole (240) are aligned and fastening screws are installed.
9. The detector acquisition instrument according to claim 6, characterized in that, The mounting box (100) has a clearance notch (140) corresponding to the position of the movable rod (300). The rear side wall of the clearance notch (140) has a first threaded hole (141), and the front side wall of the clearance notch (140) has a circular groove (144). The diameter of the circular groove (144) is larger than that of the first threaded hole (141). A screw head (310) is fixedly connected to the position of the movable rod (300) corresponding to the clearance notch (140). A connector (500) is threaded at position 140. The front wall of the circular slot (144) is provided with a second through hole (145). The cover (200) is provided with a second threaded hole (240) corresponding to the second through hole (145). The connector (500) is provided with a cylinder (510) embedded in the circular slot (144). The front end of the cylinder (510) is provided with a stud (520). The stud (520) passes through the second through hole (145) and is threadedly connected to the second threaded hole (240).
10. The detector acquisition instrument according to claim 9, characterized in that, The diameters of the connector (500), cylinder (510) and stud (520) decrease sequentially. When the front end face of the connector (500) abuts against the front side wall of the clearance notch (140), the front end face of the cylinder (510) abuts against the front end wall of the circular slot (144).