Shield tunneling machine driving box body detection device

Abstract

The invention relates to the technical field of shield tunneling machine detection, in particular to a shield tunneling machine driving box body detection device which comprises a bearing table, an annular rail is arranged on the outer side of the bearing table, a plurality of sliding rails are arranged on the outer side of the bearing table at equal intervals, and a vertical support is arranged on the outer side of the bearing table and corresponds to the sliding rails. A rotating arm is rotationally mounted at the top of the vertical bracket, and a plurality of detectors are mounted on the rotating arm; the arc-shaped section is driven to move through displacement of the sliding seat on the sliding rail, and the coaxial line of the annular rail and the driving box can be dynamically adjusted by combining contact type feedback of two V-shaped abutting pieces in the positioning assembly and the side wall of the driving box; meanwhile, a vertical coaxial line formed by butt joint of the rotating arm connecting blocks coincides with the axis of the driving box, it is ensured that the axis of the annular rail, the vertical coaxial line and the axis of the driving box are coaxial, a detector conducts detection along a preset precise path, and the problem that due to self-weight deformation and hoisting errors of a large rotary workpiece, detection benchmark misalignment is caused is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of shield machine detection, and in particular to a shield machine drive box body detection device. Background Art

[0002] As a key component for transmitting tunneling power, the shield machine's drive box's structural integrity and manufacturing precision directly determine the machine's construction safety and operational reliability. This type of box is a large, circular, rotating structure, typically 3-5 meters in diameter and weighing tens of tons. It integrates key functional areas such as bearing mounting holes, gear meshing surfaces, and flange connections. To ensure it meets operational requirements, the box is thoroughly inspected for cracks, dimensional accuracy, and geometric tolerances using a variety of methods, including ultrasonic testing, laser profiling, and eddy current testing. In existing testing technology, drive box inspections use a fixed support platform as a reference platform. After the box is hoisted onto the support platform via a crane, the testing equipment plans the sensor path using the platform's central axis as the reference origin. For example, the ultrasonic probe must be positioned radially along the support platform's center to vertically inspect the bearing bore wall, the laser profilometer must scan the flange flatness along a preset concentric circle, and the eddy current detector must follow a fixed-radius circular path to detect sidewall cracks. Existing technology requires that the coaxiality between the drive box and the support platform be controlled within a very small range. This accuracy relies on high-precision hoisting equipment and repeated manual calibration. In actual industrial scenarios, due to factors such as the deformation of the box's own weight, crane positioning error, and installation deviation of the receiving platform, there is often a significant coaxial deviation between the center of the box and the center of the receiving platform after it is placed. The existing technology lacks an effective response mechanism, which leads to many problems: First, the sensor detection path is directly bound to the receiving platform benchmark. When offset, the preset path and the actual structure of the box are misaligned. The laser profiler may scan the non-detection area of ​​the side wall, resulting in data distortion. The ultrasonic probe tilts and contacts the hole wall, causing signal attenuation. The eddy current detector leaves the effective detection range and forms a blind spot. Second, the existing compensation methods have limitations. Manual secondary lifting or jacking is not only cumbersome and time-consuming, but also limited by the weight of the box. The correction accuracy is difficult to meet the high-precision requirements required for detection, seriously affecting the detection efficiency and accuracy.

[0003] To sum up, the existing shield machine drive box detection technology is overly dependent on the fixed benchmark of the receiving platform and cannot effectively deal with the inevitable coaxiality deviation problem during the lifting process. There is an urgent need for a detection technology solution that can dynamically adapt to the actual axis of the drive box to solve the above technical defects. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a shield machine drive box body detection device.

[0005] A shield machine drive box body detection device includes a receiving platform, an annular track is provided on the outside of the receiving platform, and the annular track is composed of multiple detachable arc segments. A plurality of slide rails are equidistantly provided on the outside of the receiving platform, and a slide seat is slidably provided on the slide rail. A mounting plate is rotatably mounted on the slide seat, and one of the arc segments is detachably mounted on the mounting plate. A vertical bracket is provided on the outer side of the receiving platform and corresponding to the slide rail, and an electric base sliding on the circular track is installed at the bottom of the vertical bracket. A positioning component is installed on the vertical bracket, and the relative position of the arc segment connected to the slide is adjusted by the positioning component to achieve the coaxiality of the arc segment and the drive box; A rotating arm is rotatably mounted on the top of the vertical bracket, and a connecting block is rotatably mounted on the front end of the rotating arm. The rotating arm rotates until a vertical coaxial line formed by docking multiple connecting blocks coincides with the axis of the drive box, thereby achieving coaxial coincidence of the vertical coaxial line, the axis of the annular track, and the axis of the drive box. A plurality of detectors are installed on the rotating arm.

[0006] Preferably, the positioning assembly includes a positioning frame installed on the vertical bracket by bolts, a transverse rod is provided on the side of the positioning frame facing the receiving platform, a diagonal support is provided between the transverse rod and the lower end of the positioning frame, a threaded rod is slid through the end of the transverse rod away from the positioning frame, a positioning block is connected to the other end of the threaded rod, and an adjustment handwheel threadedly connected to the threaded rod is rotatably installed at one end of the transverse rod.

[0007] Preferably, the side wall of the positioning block is symmetrically rotated with a resistance piece, the two resistance pieces are in a "V" shape with the opening facing the drive box, and a spring is connected between the two resistance pieces. The front end of the resistance piece is rotatably provided with a roller that rolls in contact with the side wall of the drive box.

[0008] Preferably, a horizontal guide rod is provided at the bottom of the positioning block through a connecting plate, and the other end of the guide rod slides through a diagonal support piece.

[0009] Preferably, a limit piece is provided on the threaded rod, which includes a limit block slidably sleeved on the threaded rod and a limit handwheel threadedly connected to the threaded rod, and the limit handwheel is rotatably connected to the limit block, and the limit block is symmetrically provided with a resistance rod, and the front end of the resistance rod is constructed as a T-shaped structure and is rotatably sleeved with a limit sleeve.

[0010] Preferably, a rotating shaft is rotatably mounted on the upper portion of the rotating arm corresponding to the position of the detector, a mounting seat is sleeved on the rotating shaft, and a telescopic rod is mounted on the mounting seat, and the detector is mounted on the telescopic end of the telescopic rod.

[0011] Preferably, the bottom of the limiting block is connected to a limiting plate, and the limiting plate is slidably sleeved on the guide rod.

[0012] Preferably, a positioning bolt is threadedly connected to the mounting plate, and the positioning bolt is screwed to act on the upper surface of the slide seat.

[0013] Preferably, a positioning rotating shaft is provided inside the bottom of the vertical support. A support rod is rotatably provided on the positioning rotating shaft. The other end of the support rod is placed inside the rotating arm and located in the lower region of its rotation center. Sliding rods are provided on both sides of the upper end of the support rod, and sliding grooves for the sliding rods to slide are formed on both side walls of the rotating arm.

[0014] Preferably, a U-shaped frame is sleeved on the vertical support. Both sides of the U-shaped frame are fastened to the vertical support by bolts. Circular holes are formed in the parts of the side walls of the U-shaped frame extending out of the vertical support. A limit pin is inserted into the circular holes, and a strip-shaped hole for the limit pin to pass through is formed in the bottom region of the support rod.

[0015] In summary, the present application includes the following beneficial technical effects: First, in the present invention, the displacement of the sliding seat on the slide rail drives the movement of the arc segment. Combining with the contact feedback between the two "V"-shaped abutting members in the positioning component and the side wall of the drive box, the coaxiality of the annular track and the drive box can be dynamically adjusted. At the same time, the vertical coaxial line formed by the docking of the rotating arm connection blocks coincides with the axis of the drive box, ensuring that the axes of the annular track, the vertical coaxial line, and the drive box are coaxial, enabling the detector to detect along a preset precise path, effectively solving the problem of inaccurate detection benchmarks caused by self-weight deformation and lifting errors of large rotary workpiece.

[0016] Second, the rotating arm of the present invention integrates an eddy current detector, a laser profiler, an ultrasonic probe, etc. By moving the electric base along the annular track, multi-dimensional detections such as side wall cracks, flange flatness, and bearing hole wall perpendicularity can be completed. The settings of the telescopic member and the rotating shaft enable the detector to adapt to the detection requirements of different specifications of drive boxes. The meshing cooperation between the toothed plate and the gear and the locking function of the limit pin ensure the stability of the detector during the detection process.

[0017] Third, in the positioning component of the present invention, the limiting member of the threaded rod can adjust the opening angle of the abutting member by screwing the limiting handwheel to adapt to drive boxes of different diameters. The annular track is composed of multiple arc segments that can be disassembled, and there is no need to replace the whole due to the change of the drive box specifications. By adjusting the slide seat and the positioning component, the coaxial calibration of the annular track and different drive boxes can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] Figure 1 is a schematic structural diagram of the present invention.

[0020] Figure 2 is a schematic structural diagram between the annular track, the vertical support and the positioning component of the present invention.

[0021] Figure 3 is a schematic structural diagram between the vertical support and the positioning component of the present invention.

[0022] Figure 4 is a schematic structural diagram of the partial enlarged view at position A in the present invention. Figure 3

[0023] Figure 5 is a schematic structural diagram of the positioning component of the present invention.

[0024] Figure 6 is a schematic structural diagram between the vertical bracket and the rotating arm of the present invention.

[0025] Figure 7 is the present invention Figure 6 is a schematic structural diagram of the partial enlarged view at position B in the present invention.

[0026] Figure 8 is the present invention Figure 6 is a schematic structural diagram of the partial enlarged view at position C in the present invention.

[0027] Figure 9 is a schematic structural diagram of the rotating arm of the present invention in a non-working state.

[0028] Figure 10 is a schematic structural diagram among the rotating arm, the telescopic rod member and the detector of the present invention.

[0029] Figure 11 is a schematic structural diagram among the rotating arm, the control bar, the convex block and the toothed plate of the present invention.

[0030] Figure 12 is the present invention Figure 11 is a schematic structural diagram of the partial enlarged view at position D in the present invention.

[0031] In the figure, 1, receiving table; 2, annular track; 3, auxiliary bracket; 4, slide rail; 41, slide seat; 42, mounting plate; 43, vertical bracket; 44, electric base; 5, positioning component; 6, rotating arm; 7, detector; 501, positioning frame; 502, horizontal bar; 503, diagonal brace; 504, threaded rod; 505, positioning block; 506, adjusting handwheel; 507, connecting plate; 508, guide rod; 509,抵触 member; 510, spring one; 511, roller; 512, positioning bolt; 601, connecting block; 602, rotating shaft; 603, mounting seat; 604, telescopic rod member; 605, toothed plate; 606, limiting rod; 607, spring two; 608, gear; 609, L-shaped plate; 610, control bar; 612, electric push rod; 613, convex block; 614, strip-shaped groove; 620, positioning rotating shaft; 621, support rod; 622, sliding rod; 623, chute; 624, U-shaped frame; 625, limiting pin; 626, strip-shaped hole; 521, limiting block; 522, limiting handwheel; 523,抵触 rod; 524, limiting sleeve; 525, limiting plate. Detailed implementation manners​

[0032] The following will Figures 1-12 describe the embodiments of the present invention in detail.

[0033] Embodiment 1: Referring to Figures 1 to 3 , a detection device for the box body of a shield machine drive box, including a receiving platform 1 for placing the drive box. An annular track 2 is provided outside the receiving platform 1. A telescopic support leg is provided at the bottom of the annular track 2 for adjusting the levelness of the annular track 2. The annular track 2 is composed of multiple arc segments that can be disassembled. The adjacent arc segments are connected and fixed by an auxiliary support 3 (a tenon and mortise fitting structure, such as a convex platform and a groove, is provided at the end face of the arc segment so that the arc segment can be fastened to the auxiliary support 3 by bolts). A telescopic support leg for adjusting its height is also provided at the bottom of the auxiliary support 3.

[0034] The number of arc segments can be determined according to the diameter range of the drive box. For example, the arc segments can be equally divided into four segments or equally divided into eight segments (as Figure 1 and Figure 2 shown).

[0035] A plurality of slide rails 4 are provided at equal intervals outside the receiving platform 1. A telescopic support leg for adjusting its levelness is also provided at the bottom of the slide rail 4. The telescopic support leg is preferably a threaded lifting support leg. The front end of the slide rail 4 is detachably installed on the receiving platform 1. A slide seat 41 slides on the slide rail 4. A mounting plate 42 is rotatably installed on the slide seat 41 through a rotating shaft. One of the arc segments is detachably (fixed by bolts) installed on the mounting plate 42.

[0036] A vertical support 43 is provided outside the receiving platform 1 and corresponding to the slide rail 4. An electric base 44 that slides on the annular track 2 is installed at the bottom of the vertical support 43. A positioning component 5 is installed on the vertical support 43. The relative position of the arc segment connected to the slide seat 41 is adjusted through the positioning component 5 to make the arc segment coaxial with the drive box.

[0037] A rotating arm 6 is rotatably installed at the top of the vertical support 43. A plurality of detectors 7 for detecting the box body of the drive box are installed on the rotating arm 6. The detectors 7 include an eddy current detector, a laser profiler, an ultrasonic probe, etc.

[0038] The vertical support 43 is provided with a C-shaped structure with an opening facing away from the receiving platform 1. The rotating arm 6 is provided with a U-shaped structure with an opening facing the receiving platform 1. And the lower section area of the rotating arm 6 along its rotation center rotates and is accommodated inside the vertical support 43.

[0039] At the beginning, the drive box to be tested is hoisted onto the receiving platform 1 by a crane. Before starting the test, the circular track 2 needs to be adjusted to ensure that it is coaxial with the drive box. Therefore, before starting, it is necessary to first remove the curved track that is not connected to the slide rail 4. Then, by moving the slide 41, the curved segment on the mounting plate 42 and the positioning assembly 5 on the vertical bracket 43 are driven toward the outer wall of the drive box until the front end of the positioning assembly 5 contacts the outer wall of the drive box. At this time, the curved segment coincides with the axis of the drive box. Then, the curved segment removed at the beginning is reinstalled to form a complete circular track 2, which is now coaxial with the drive box.

[0040] After confirming that the annular track 2 is coaxial with the drive box, the rotating arm 6 is rotated so that its upper end rotates toward the center of the drive box until the multiple connecting blocks 601 are fully aligned to form a vertical coaxial line. This vertical coaxial line coincides with the axis of the drive box. Detector 7 is then activated, and an eddy current detector, a laser profilometer, and an ultrasonic probe are installed on the rotating arm 6 above the drive box. The vertical bracket 43 is driven by the electric base 44 to move along the annular track 2, allowing detector 7 to scan the surface of the drive box one by one to complete the drive box body inspection. After the inspection is completed, the rotating arm 6 rotates in the opposite direction and resets.

[0041] The eddy current detector detects side wall cracks along the predetermined path of the annular track 2, the laser profiler scans the flange flatness concentrically along the predetermined path of the annular track 2, and the ultrasonic probe is positioned radially along the center of the receiving platform 1 to vertically detect the bearing hole wall. The eddy current detector, laser profiler and ultrasonic probe all adopt currently available technologies and will not be described in detail in this application.

[0042] See Figure 1 and Figure 6 As shown, a connecting block 601 is provided at the front end of the rotating arm 6 through rotation of a rotating shaft. The rotating arm 6 rotates to the center until multiple connecting blocks 601 are docked. The vertical coaxial line formed after the multiple connecting blocks 601 are docked coincides with the axis of the drive box. By coaxially aligning the vertical coaxial line, the axis of the annular track 2 and the axis of the drive box, the detector 7 is ensured to be accurately aligned during the scanning process to avoid errors, thereby achieving high-precision detection.

[0043] In summary, the present application realizes the real-time coincidence of the central axis of the annular track 2 and the axis of the drive box by adjusting the position of the arc segment driven by the displacement of the slide 41 on the slide rail 4, combined with the contact feedback between the positioning component 5 and the side wall of the drive box. The rotating arm 6 integrates an eddy current detector, a laser profiler and an ultrasonic probe, etc., and realizes the detection of side wall cracks, flange flatness and bearing hole wall verticality through the continuous movement of the electric base 44 along the annular track 2, thereby solving the problem of misalignment of the detection reference caused by the deformation of the self-weight and the lifting error of the large rotating workpiece (such as the shield machine drive box body).

[0044] The mating surfaces of two adjacent connecting blocks 601 are embedded with magnets with opposite magnetic properties (not shown in the figure), and positioning pins and pin holes are set on the mating surfaces of the connecting blocks 601. The mating surfaces of the two adjacent connecting blocks 601 are ensured to be smoothly docked by the insertion and fit of the positioning pins and pin holes and the magnetic attraction of the magnets, thereby enhancing the connection stability.

[0045] See Figures 3 to 5 As shown, the positioning assembly 5 includes a positioning frame 501 mounted on the vertical bracket 43 by bolts. The positioning frame 501 is provided with a transverse rod 502 on the side facing the receiving platform 1. A diagonal brace 503 is provided between the transverse rod 502 and the lower end of the positioning frame 501. The diagonal brace 503 is used to enhance the transverse support force of the transverse rod 502. A threaded rod 504 is slidably inserted through the end of the transverse rod 502 facing away from the positioning frame 501. The other end of the threaded rod 504 is connected to a positioning block 505. An adjustment handwheel 506 is rotatably mounted on one end of the transverse rod 502 and threadedly connected to the threaded rod 504. Rotating the handwheel drives the threaded rod 504 to move, causing the positioning block 505 to slide along the transverse rod 502. A horizontal guide rod 508 is provided at the bottom of the positioning block 505 through a connecting plate 507. The other end of the guide rod 508 is slidably inserted through the diagonal brace 503 to ensure that the positioning block 505 does not tilt as a whole when the adjustment handwheel 506 rotates.

[0046] Furthermore, the positioning frame 501 can slide along the vertical bracket 43 to adjust the height of the horizontal rod 502, thereby adapting to the detection requirements of drive boxes at different heights, ensuring that the positioning block 505 is always close to the side wall of the drive box to achieve precise positioning, and after adjusting to the specified position, the positioning frame 501 is fastened to the vertical bracket 43 again by bolts.

[0047] The side wall of the positioning block 505 is symmetrically rotated with a resistance piece 509, and the two resistance pieces 509 are in a "V" shape with the opening facing the drive box, and a spring 510 is connected between the two resistance pieces 509. The spring 510 has a tendency to pull the two resistance pieces 509 inward. The front end of the resistance piece 509 is rotatably provided with a roller 511 that is in rolling contact with the side wall of the drive box. The surface of the roller 511 is covered with wear-resistant material to ensure smooth contact.

[0048] When the slide 41 moves along the slide rail 4 toward the drive box, the vertical bracket 43 drives the positioning frame 501 and the transverse rod 502 to move forward together, and the resistance member 509 moves with the transverse rod 502 through the threaded rod 504 and the positioning frame 501, and the roller 511 contacts the side wall of the drive box. As the slide 41 continues to move, it rolls on the side wall of the drive box and drives the two resistance members 509 to expand outward, and the spring 1 510 is stretched until the two resistance members 509 are fully expanded.

[0049] During the above process, the two resistance members 509 are unfolded and fit tightly against the side walls of the drive box to form a stable support point, ensuring that the length direction of the transverse rod 502 is consistent with the radial direction of the drive box. In this process, if the placement position deviation of the drive box on the receiving platform 1 is too large, during the unfolding of the above resistance members 509, the transverse rod 502 may rotate slightly with the vertical bracket 43 around the rotating shaft on the slide 41 to ensure that the length direction of the transverse rod 502 is always aligned with the radial direction of the drive box, thereby accurately correcting the detection reference.

[0050] In addition, since the annular track 2 is composed of multiple detachable arc segments, if the arc segments of the corresponding radius need to be replaced each time a drive box of different specifications is tested to form an annular track 2 with a matching diameter, this will result in each drive box with different specifications having a set of annular tracks 2 with corresponding specifications. In order to avoid this situation, when the diameter of the annular track 2 remains unchanged, if it is for a drive box of different specifications, the distance from the positioning block 505 to the transverse rod 502 can be changed by turning the adjustment hand wheel 506, so that the radial dimensions of different drive boxes can be adapted without changing the annular track 2, thereby achieving flexible adjustment and ensuring that the coaxial line of the drive box and the annular track 2 can be quickly adjusted.

[0051] Furthermore, a positioning bolt 512 is threadedly connected to the mounting plate 42, and the positioning bolt 512 is screwed to act on the upper surface of the slide 41. When the vertical bracket 43 and the two rollers 511 hit the side wall of the drive box, the mounting base 603 adaptively rotates through the rotating shaft to adjust the rotation angle of the vertical bracket 43. After the adjustment is completed, the positioning bolt 512 is screwed to fix the vertical bracket 43 to prevent the vertical bracket 43 from rotating with the rotating shaft during detection.

[0052] Example 2: See Figure 6 and Figure 10 As shown, based on the first embodiment, a rotating shaft 602 is rotatably mounted on the upper portion of the rotating arm 6 at the position corresponding to the detector 7. A mounting seat 603 is mounted on the rotating shaft 602, and a telescopic rod 604 is mounted on the mounting seat 603. The detector 7 is mounted on the telescopic end of the telescopic rod 604. When the rotating arm 6 is rotated to different specifications of the circular track 2, in order to ensure the smooth docking of the connecting block 601 of the rotating arm 6, the rotation angle of the rotating arm 6 is different. When the rotating arm 6 is rotated to different angles, the telescopic rod 604 can be adaptively rotated around the rotating shaft 602 under the action of gravity to keep the detector 7 always perpendicular to the surface of the circular track 2. At the same time, the telescopic rod 604 can preferably be an electric telescopic rod to adjust the distance from the detector 7 to the surface of the drive box to adapt to the detection requirements of drive boxes of different specifications.

[0053] In addition, the vertical bracket 43 will move around the circular track 2 through the electric base 44, and the detector 7 will swing due to the rotating axis 602 during the movement. In order to avoid this situation, a tooth plate 605 is provided on the side of the rotating arm 6 away from the circular track 2, and a limiting rod 606 is provided on both sides of the tooth plate 605 for sliding. One end of the limiting rod 606 is fixed on the side wall of the rotating arm 6, and a spring 2 607 is provided between the other end and the tooth plate 605. The distance between the tooth plate 605 and the side wall of the rotating arm 6 is controlled by the compression and release of the spring 2 607.

[0054] A gear 608 is mounted on the rotating shaft 602, meshing with a toothed plate 605. Rotation of the telescopic rod 604 and the rotating shaft 602 drives the gear 608 to rotate coaxially. A through-hole is provided in the side wall of the rotating arm 6, through which the teeth of the toothed plate 605 extend into the rotating arm 6 and mesh with the gear 608. When the telescopic rod 604 is in the vertical position, the compressive force of the second spring 607 tightly engages the toothed plate 605 with the gear 608, limiting the swing of the rotating arm 6 and ensuring that the detector 7 remains stable and perpendicular to the track surface as the vertical bracket 43 moves along the circular track 2, thereby ensuring detection accuracy.

[0055] See Figure 11 and Figure 12 As shown, the side wall of the tooth plate 605 is provided with an L-shaped plate 609, and the side wall of the L-shaped plate 609 is slidingly provided with a control bar 610, and an electric push rod 612 is installed on the side wall of the rotating arm 6. The telescopic end of the electric push rod 612 is connected to one end of the control bar 610, which is used to drive the control bar 610 to slide in the L-shaped plate 609, and the side wall of the L-shaped plate 609 is provided with a protrusion 613 that interferes with the control bar 610, and the upper section of the control bar 610 is provided with a strip groove 614 corresponding to the protrusion 613, and the corner of the strip groove 614 is set as an inclined surface. When the electric push rod 612 is extended or retracted, the control bar 610 slides along the L-shaped plate 609, and the inclined surface design causes the protrusion 613 to gradually embed into the strip groove 614, or the protrusion 613 to gradually escape from the strip groove 614.

[0056] When the electric push rod 612 pulls the control bar 610 to move, the protrusion 613 enters the bar groove 614. At this time, the spring 2 607 drives the tooth plate 605 to mesh tightly with the gear 608. Figure 10 when the electric push rod 612 pushes the control bar 610 to move, the protrusion 613 disengages the bar groove 614 and conflicts with the control bar 610, the tooth plate 605 and the gear 608 are disengaged, allowing the rotating arm 6 to swing within a certain range, at this time the spring 607 is in a compressed state.

[0057] See Figures 6 to 9As shown, a positioning rotating shaft 620 is provided inside the bottom of the vertical support 43. A support rod 621 is rotatably provided on the positioning rotating shaft 620. The other end of the support rod 621 is placed inside the rotating arm 6 and located in the lower region of its rotation center. Sliding rods 622 are provided on both sides of the upper end of the support rod 621. Chute grooves 623 for the sliding rods 622 to slide are formed on both side walls of the rotating arm 6.

[0058] When the rotating arm 6 rotates along the top of the vertical support 43, the sliding rods 622 at the upper end of the support rod 621 slide along the chute grooves 623 of the rotating arm 6. At the same time, the lower end of the support rod 621 rotates along the axis of the positioning rotating shaft 620, ensuring that the rotating arm 6 always remains balanced.

[0059] A U-shaped frame 624 is sleeved on the vertical support 43. The two sides of the U-shaped frame 624 are fastened to the vertical support 43 by bolts. Circular holes are formed in the parts of the side walls of the U-shaped frame 624 extending out of the vertical support 43. A limit pin 625 is inserted into the circular holes. A strip-shaped hole 626 for the limit pin 625 to pass through is formed in the bottom region of the support rod 621.

[0060] When the support rod 621 rotates to a specific position, turn the bolts on the side wall of the U-shaped frame 624 so that the U-shaped frame 624 can move up and down along the vertical support 43 to adjust the position of the limit pin 625, ensuring that the limit pin 625 can be inserted into the strip-shaped hole 626. Then tighten the bolts to fix the U-shaped frame 624 on the vertical support 43. Through the precise cooperation between the limit pin 625 and the strip-shaped hole 626, the position of the support rod 621 is locked, and further the rotation angle of the rotating arm 6 is locked, ensuring that the problem of accidental swing of the rotating arm 6 is avoided during the detection process, such as Figure 6 the state shown.

[0061] When the detection is completed, the rotating arm 6 rotates and resets to the vertical state. At this time, the lower part of the rotating arm 6 completely enters into the vertical support 43. At this time, the limit pin 625 is inserted into the circular hole to limit the rotation of the rotating arm 6, ensuring that the rotating arm 6 remains stable in the non-working state and preventing damage to the equipment caused by accidental start-up, such as Figure 9 the state shown.

[0062] Furthermore, in order to improve the control of the rotating arm 6 by the staff, a pull rope (not shown in the figure) is connected to the lower end of the rotating arm 6. By holding the pull rope, the staff can manually adjust the swing amplitude of the rotating arm 6, ensuring that the perpendicularity of the detector 7 can still be accurately controlled in a complex environment, improving the operation flexibility and detection accuracy.

[0063] Embodiment Three: Refer to Figure 4 and Figure 5As shown, on the basis of embodiment 1, in order to ensure that the two interference members 509 reach the maximum expansion angle, this embodiment is provided with a limit member on the threaded rod 504, the limit member includes a limit block 521 slidably sleeved on the threaded rod 504 and a limit handwheel 522 threadedly connected to the threaded rod 504, and the limit handwheel 522 is rotatably connected to the limit block 521, the limit block 521 is symmetrically provided with an interference rod 523, the front end of the interference rod 523 is constructed as a T-shaped structure and is rotatably sleeved with a limit sleeve 524, the roller 511 of the interference member 509 is in contact with the drive After the side wall of the moving box is moved, as the positioning block 505 continues to move, the two resistance members 509 begin to rotate and expand until the resistance member 509 rotates to contact the limiting sleeve 524, and the resistance rod 523 is restricted by the limiting block 521, so the resistance member 509 cannot continue to expand, thereby ensuring that the expansion angle reaches the preset maximum value. When the expansion angle of the resistance member 509 reaches the maximum, it can effectively ensure the precise radial alignment of the transverse rod 502 and the drive box, avoiding the inability of the transverse rod 502 to be radially aligned with the drive box due to inconsistent expansion angles of the two resistance members 509.

[0064] At the same time, the position of the limit block 521 on the threaded rod 504 can be fine-tuned by turning the limit handwheel 522, and the resistance rod 523 and the limit sleeve 524 move accordingly, thereby controlling the expansion angle of the resistance member 509 to adapt to drive boxes of different specifications and ensure radial alignment of the transverse rod 502 and the drive box.

[0065] The bottom of the limit block 521 is connected to a limit plate 525 , and the limit plate 525 is slidably sleeved on the guide rod 508 to ensure that when the limit hand wheel 522 is turned, the limit block 521 moves smoothly along the guide rod 508 to avoid deviation.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0067] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A shield machine drive box body detection device, comprising a receiving platform (1), characterized in that: A circular track (2) is provided on the outside of the receiving platform (1), and the circular track (2) is composed of a plurality of detachable arc segments. A plurality of slide rails (4) are equidistantly provided on the outside of the receiving platform (1), and a slide seat (41) is slidably provided on the slide rail (4). A mounting plate (42) is rotatably mounted on the slide seat (41), and one of the arc segments is detachably mounted on the mounting plate (42). A vertical bracket (43) is provided on the outside of the receiving platform (1) and corresponding to the slide rail (4). An electric base (44) that slides on the annular track (2) is installed at the bottom of the vertical bracket (43). A positioning component (5) is installed on the vertical bracket (43). The relative position of the arc segment connected to the slide seat (41) is adjusted by the positioning component (5) to achieve the coaxiality of the arc segment and the drive box. A rotating arm (6) is rotatably mounted on the top of the vertical bracket (43), and a connecting block (601) is rotatably mounted on the front end of the rotating arm (6). The rotating arm (6) rotates until a vertical coaxial line formed by docking multiple connecting blocks (601) coincides with the axis of the drive box, thereby achieving coaxial coincidence of the vertical coaxial line, the axis of the annular track (2), and the axis of the drive box. A plurality of detectors (7) are mounted on the rotating arm (6).

2. A shield machine drive box detection device according to claim 1, characterized in that: The positioning assembly (5) includes a positioning frame (501) mounted on the vertical bracket (43) by bolts, a transverse rod (502) is provided on the side of the positioning frame (501) facing the receiving platform (1), a diagonal support member (503) is provided between the transverse rod (502) and the lower end of the positioning frame (501), a threaded rod (504) is slidably passed through one end of the transverse rod (502) away from the positioning frame (501), a positioning block (505) is connected to the other end of the threaded rod (504), and an adjusting hand wheel (506) threadedly connected to the threaded rod (504) is rotatably mounted on one end of the transverse rod (502).

3. A shield machine drive box detection device according to claim 2, characterized in that: The side wall of the positioning block (505) is symmetrically rotated and provided with a resistance member (509), the two resistance members (509) are in a "V" shape with the opening facing the drive box, and a spring (510) is connected between the two resistance members (509), and the front end of the resistance member (509) is rotatably provided with a roller (511) that rolls in contact with the side wall of the drive box.

4. The shield machine drive box detection device according to claim 1, characterized in that: A horizontal guide rod (508) is provided at the bottom of the positioning block (505) through a connecting plate (507), and the other end of the guide rod (508) is slidably penetrated by a diagonal support member (503).

5. The shield machine drive box detection device according to claim 4, characterized in that: A limiting member is provided on the threaded rod (504), the limiting member comprising a limiting block (521) slidably sleeved on the threaded rod (504) and a limiting handwheel (522) threadedly connected to the threaded rod (504), wherein the limiting handwheel (522) is rotatably connected to the limiting block (521), and the limiting block (521) is symmetrically provided with a resisting rod (523), wherein the front end of the resisting rod (523) is constructed as a T-shaped structure and is rotatably sleeved with a limiting sleeve (524).

6. A shield machine drive box detection device according to claim 5, characterized in that: A rotating shaft (602) is rotatably mounted on the upper portion of the rotating arm (6) at a position corresponding to the detector (7). A mounting seat (603) is sleeved on the rotating shaft (602), and a telescopic rod (604) is mounted on the mounting seat (603). The detector (7) is mounted on the telescopic end of the telescopic rod (604).

7. The shield machine drive box detection device according to claim 5, characterized in that: A limiting block (521) is connected to a limiting plate (525) at the bottom, and the limiting plate (525) is slidably sleeved on a guide rod (508).

8. The shield machine drive box detection device according to claim 1, characterized in that: A positioning bolt (512) is threadedly connected to the mounting plate (42), and the positioning bolt (512) is screwed to act on the upper surface of the sliding seat (41).

9. The shield machine drive box detection device according to claim 1, characterized in that: A positioning rotating shaft (620) is provided inside the bottom of the vertical bracket (43). A support rod (621) is rotatably provided on the positioning rotating shaft (620). The other end of the support rod (621) is placed inside the rotating arm (6) and in the lower end area of its rotation center. Sliding rods (622) are provided on both sides of the upper end of the support rod (621). Chutes (623) for the sliding rods (622) to slide are formed on both side walls of the rotating arm (6).

10. The shield machine drive box detection device according to claim 9, characterized in that: A U-shaped frame (624) is sleeved on the vertical bracket (43). The two sides of the U-shaped frame (624) are fastened to the vertical bracket (43) by bolts. Circular holes are formed in the parts of the side walls of the U-shaped frame (624) extending out of the vertical bracket (43). A limiting pin (625) is inserted into the circular holes. A strip-shaped hole (626) for the limiting pin (625) to pass through is formed in the bottom area of the support rod (621).

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