A manhole step positioning punch tool

Abstract

The present application relates to the technical fields of inspection well punching, in particular to a kind of inspection well step positioning punching tool, including mobile support, hole locating support and opening instrument: mobile support is movably sleeved on the top opening of tubular inspection well;Hole locating support corresponds three pairs of installation hole groups that are equilateral triangle distribution on the inner wall of inspection well;Opening instrument is used to set installation hole group and stress release hole group on the inner wall of inspection well;Still include: stabilizing mechanism is set on mobile support.The present application uses load-bearing vertical rod to set upper hole locating H-shaped pipe and lower hole locating H-shaped pipe which are symmetrical, uses slotter to set stress release slot that is equidistantly distributed in circumferential direction on the inner wall of inspection well corresponding hole locating support, then uses drill to set stress release hole that is interval distribution with stress release slot, and fill ice water pipeline and propylene glycol coolant that have cooling and cold compress effect in it, to cool and wet protection for the part of inner wall of inspection well for setting installation hole group.

Description

Technical Field

[0001] The invention relates to the technical field of inspection well drilling, in particular to a inspection well step positioning and drilling tool. Background Art

[0002] Manhole steps are crucial safety features for personnel entering and exiting manholes. Their positioning must meet safety, standardization, and practicality requirements, complying with relevant standards and specifications while also adapting to the manhole's structural characteristics and usage scenarios. Positioning manhole steps is a meticulous process that integrates regulatory requirements, ergonomics, and site realities. The key lies in ensuring safe and convenient entry and exit through precise vertical alignment, reasonable spacing control, and obstacle avoidance design.

[0003] Under existing conditions, the positioning of inspection well steps often adopts a inspection well step positioning and drilling tool such as the one disclosed in the announcement number CN216240434U, which adopts an integral structure of vertical and horizontal steel bars. The horizontal steel bar is welded in the middle of the vertical steel bar, and a connecting steel bar is welded between the cylindrical steel pipes. The spacing between the two cylindrical steel pipes is the width of the step. Although the structure is simple and easy to use, the depth and diameter of the inspection well are different. It is difficult to perform multi-point and diversified positioning in the inspection well using a fixed structure positioning tool. The positioning tool represented by it cannot achieve position fixation on the inspection well, and even lacks the necessary support and positioning measures. Moreover, as the step positioning position changes, the process of moving the positioning tool requires more manpower, and it is even difficult to ensure the stability of the positioning tool itself during this process. It is also very easy to miss the accurate position in the later drilling due to the positioning tool. More importantly, the positioning tool has a simple structure, so its role in drilling operations is very limited. It may even cause interference and obstruction during the drilling operation due to the lack of fixing and guiding functions. Moreover, due to the brittle properties of the concrete inspection well structure, under the existing conditions, it is very easy for the inspection well opening structure to break during the drilling process due to improper operation or lack of corresponding protective measures, which will not only affect the integrity of the inspection well opening, but also affect the installation stability and safety of the subsequent steps. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is difficult to perform drilling processing on an inspection well with a curved surface structure, which affects the step positioning, and to propose a drilling tool for positioning the step of an inspection well.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tool for positioning and drilling manhole steps, comprising a movable support, a hole-aligning bracket, and a drilling instrument:

[0007] The movable support is movably mounted on the top opening of the tubular inspection well;

[0008] The hole brackets correspond to three pairs of mounting hole groups distributed in an equilateral triangle on the inner wall of the inspection well;

[0009] The hole opening instrument is used to open the installation hole group and stress relief hole group on the inner wall of the inspection well;

[0010] Also includes:

[0011] A stabilization mechanism is provided on a movable support, and the movable support is circumferentially translated along the top opening of the inspection well by the stabilization mechanism;

[0012] A vertical mechanism, wherein the vertical mechanism is provided on the movable support, and the hole bracket is always kept in a vertical downward state by the vertical mechanism;

[0013] The hole-opening mechanism is movably arranged on the hole-opening bracket, and the hole-opening mechanism opens an installation hole group and a stress release hole group on the inner wall of the inspection well through a hole-opening instrument.

[0014] Preferably, the cross-section of the movable support is an η-type structure, and the long end of the movable support is located inside the inspection well.

[0015] Preferably, the hole-matching bracket includes a load-bearing longitudinal rod, the upper and lower ends of which are fixedly connected with an upper hole-matching I-shaped pipe fitting and a lower hole-matching I-shaped pipe fitting, and a middle hole-matching I-shaped pipe fitting group is provided at the middle end of the load-bearing longitudinal rod.

[0016] Preferably, the hole-opening instrument includes a drill and a slotter.

[0017] Preferably, the stabilization mechanism includes an upper limit support assembly and a lower limit support assembly that are respectively movable against the top opening and the inner wall of the inspection well.

[0018] Preferably, the upper limit support assembly is used to vertically support the movable support at the top opening position of the inspection well, and the lower limit support assembly is used to horizontally support the movable support at the inner wall position of the inspection well.

[0019] Preferably, the uprighting mechanism includes a straightening component for supporting the hole-aligning bracket to be vertically downward, and the uprighting mechanism also includes a limiting component for fixing the hole-aligning bracket to be vertically downward.

[0020] Preferably, the alignment component is arranged on the movable support, and the limiting component is arranged on the alignment component and the hole-aligning bracket.

[0021] Preferably, the hole opening mechanism includes a steering telescopic assembly movably arranged on the load-bearing longitudinal rod, and the hole opening mechanism also includes a driving assembly arranged on the steering telescopic assembly and used to fix and drive the drill and the slotter.

[0022] Preferably, the steering telescopic assembly is used to drive the drill and the slotter to correspond to the upper hole I-shaped pipe fitting, the lower hole I-shaped pipe fitting and the middle hole I-shaped pipe fitting group.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention utilizes a load-bearing longitudinal rod to set upper and lower symmetrical I-shaped pipe fittings with holes, and sets an adjustable and disassembled middle I-shaped pipe fitting in the middle of the load-bearing longitudinal rod, so that the upper I-shaped pipe fittings, the lower I-shaped pipe fittings and the middle I-shaped pipe fittings can be used to position the three pairs of mounting holes required for the steps on the inner wall of the inspection well in an equilateral triangle structure, ensuring that the three pairs of mounting holes can be flexibly adjusted to uniform sizes and specifications according to actual needs.

[0025] 2. The present invention sets a movable support with an η-shaped cross-section structure for a circular tubular inspection well, and sets an upper limit support assembly and a lower limit support assembly at the upper and lower ends of the movable support. The hydraulic piston tube is adjustable raised and lowered so that the driven piston support roller can vertically and stably support the movable support. The T-shaped wedge head elastic telescopic part is adjustable extended and retracted so that the limit support roller can horizontally and stably support the movable support. The movable support drives the hole bracket to perform 360° all-round horizontal displacement adjustment along the inspection well.

[0026] 3. The present invention rotatably sets a pendulum cantilever for pulling the hole-matching bracket on a movable support, and uses a matching visual identifier and plumb line scale to analyze the state of the pendulum cantilever. Then, the state of the pendulum cantilever is adjusted by using a servo control driver, a driving gear and a driven half gear. At the same time, a length-adjustable limit assembly is used to limit the height of the hole-matching bracket of the corresponding mounting hole group, ensuring that a stable and accurate position reference can be provided for the hole-matching instrument during the hole-matching process.

[0027] 4. The present invention rotatably sets a steering telescopic assembly on the hole bracket, and sets a driving assembly on the steering telescopic assembly that can conveniently disassemble and replace the slotter and the drill. The slotter is used to open circumferentially equidistant stress relief grooves on the inner wall of the inspection well corresponding to the hole bracket, and then the drill is used to open stress relief holes spaced apart from the stress relief grooves, and ice water pipes and propylene glycol coolant with a cooling and cold compress effect are filled therein. At the same time, cold water is sprayed to cool and wet-protect the area on the inner wall of the inspection well used for opening the installation hole group. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of a manhole step positioning and drilling tool proposed by the present invention;

[0029] Figure 2 This is a bottom view of a manhole step positioning and drilling tool proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the movable support structure of a manhole step positioning and drilling tool proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of the hole-matching bracket structure of a manhole step positioning and drilling tool proposed by the present invention;

[0032] Figure 5 This is a schematic structural diagram of a drill and slotter for a manhole step positioning and drilling tool proposed by the present invention;

[0033] Figure 6 This is a structural diagram of the movable support, hole-aligning bracket, stabilizing mechanism, and uprighting mechanism of a manhole step positioning and drilling tool proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the hole-aligning bracket and hole-opening mechanism structure of a manhole step positioning and drilling tool proposed by the present invention;

[0035] Figure 8 This is a cross-sectional schematic diagram of the movable support and alignment assembly structure of a manhole step positioning and drilling tool proposed by the present invention;

[0036] Figure 9 This is a cross-sectional view of the hole bracket and limit assembly structure of a manhole step positioning and drilling tool proposed by the present invention;

[0037] Figure 10 This is a cross-sectional view of the structure of the movable support and upper limit support assembly of a manhole step positioning and punching tool proposed by the present invention;

[0038] Figure 11 This is an enlarged schematic diagram of the structure of part A of a manhole step positioning and drilling tool proposed by the present invention;

[0039] Figure 12 This is a schematic structural diagram of an alignment component of a manhole step positioning and drilling tool proposed by the present invention;

[0040] Figure 13 This is a schematic diagram of the hole-aligning bracket and hole-opening mechanism structure of a manhole step positioning and drilling tool proposed by the present invention;

[0041] Figure 14 This is a schematic structural diagram of a limit assembly of a manhole step positioning and drilling tool proposed by the present invention;

[0042] Figure 15 This is a schematic diagram of the hole-opening mechanism structure of a manhole step positioning and drilling tool proposed by the present invention;

[0043] Figure 16This is a schematic diagram of the distribution of the hole bracket, uprighting mechanism and hole opening mechanism of the inspection well step positioning and drilling tool proposed by the present invention;

[0044] Figure 17 This is a schematic diagram of the distribution of mounting holes, stress relief grooves, and stress relief holes for a manhole step positioning and punching tool proposed by the present invention;

[0045] Figure 18 This is a schematic diagram of the inspection well step positioning of the inspection well step positioning and drilling tool proposed by the present invention.

[0046] In the picture:

[0047] 1. Mobile support;

[0048] 2. Bracket for opposite holes; 21. Load-bearing longitudinal rod; 22. I-shaped pipe fitting for upper opposite holes; 23. I-shaped pipe fitting for lower opposite holes;

[0049] 24. Center-to-center I-shaped pipe fitting set; 241. Installation through-hole; 242. Locking countersunk hole; 243. Telescopic mounting rod; 244. Center-to-center I-shaped pipe fitting;

[0050] 3. Hole-opening instrument; 31. Drill; 32. Grooving instrument;

[0051] 4. Stability maintenance agencies;

[0052] 41. Upper limit support assembly; 411. Y-shaped hydraulic long chamber; 412. Upper bracket; 413. Lower bracket; 414. Elastic snap fastener; 415. Ratchet head shaft; 416. Threaded hole traction member; 417. Lifting screw; 418. Hydraulic piston tube; 419. I-shaped elastic piston; 4110. Driven piston support roller;

[0053] 42. Lower limit support assembly; 421. L-shaped long cavity; 422. Lifting drive block; 423. T-shaped wedge elastic expansion member; 424. Bevel cut; 425. Limit support roller;

[0054] 5. Standing mechanism;

[0055] 51. Straightening assembly; 511. Pendulum cantilever; 512. Visual identifier; 513. Plumb line scale; 514. Servo control driver; 515. Drive gear; 516. Driven half gear;

[0056] 52. Limiting assembly; 521. Telescopic traction member; 522. Connecting hanger; 523. Extension screw; 524. T-threaded pipe interference member;

[0057] 6. Opening mechanism;

[0058] 61. Steering telescopic assembly; 611. Rotating sleeve rod; 612. Telescopic inner rod; 613. Loading hole plate;

[0059] 62. Driving assembly; 621. Threaded head guide rod; 622. Limiting orifice plate; 623. Return spring; 624. Support plate; 625. Limiting sleeve; 626. Synchronous connecting rod; 627. Limiting mounting seat; 628. Limiting nut. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0061] Reference Figures 1-18 A tool for positioning and drilling a manhole step includes a movable support 1, a hole bracket 2, and a hole-drilling instrument 3. It also includes a stabilizing mechanism 4, an upright mechanism 5, and a hole-drilling mechanism 6.

[0062] The movable support 1 is movably mounted on the top opening of the tubular inspection well. Figure 1 -Attached Figure 3 , Attachment Figure 16 With attached Figure 18 The inspection well is a circular tubular structure made of steel bars and concrete. By driving the mobile support 1 on the inspection well to perform 360° circumferential movement, it is convenient to perform step positioning at any angle position of the inspection well according to actual needs, thereby opening three pairs of installation hole groups, and using the installation hole groups to set as shown in the attached manual Figure 1 The U-shaped step support shown provides a load-bearing support structure for the upper and lower inspection wells.

[0063] The hole bracket 2 corresponds to three pairs of mounting hole groups distributed in an equilateral triangle on the inner wall of the inspection well. The hole bracket 2 includes a load-bearing longitudinal rod 21. The upper and lower ends of the load-bearing longitudinal rod 21 are respectively fixedly connected with an upper I-shaped pipe fitting 22 and a lower I-shaped pipe fitting 23, and a middle I-shaped pipe fitting group 24 is provided at the middle end of the load-bearing longitudinal rod 21. It should be noted that the three pairs of mounting hole groups are arranged according to ergonomics, with three U-shaped step supports as a group, to ensure that the user has sufficient and non-obstructive force and force fulcrums when climbing the inspection well with the help of the U-shaped step support.

[0064] Further explanation:

[0065] The center-hole I-shaped pipe fitting assembly 24 includes a mounting through hole 241, a locking countersunk hole 242, a telescopic mounting rod 243, and a center-hole I-shaped pipe fitting 244:

[0066] The mounting through hole 241 is formed at the middle end of the load-bearing longitudinal rod 21 .

[0067] The locking countersunk hole 242 is formed at the middle end of the load-bearing longitudinal rod 21 , and the locking countersunk hole 242 for installing a locking screw is connected to the installation through hole 241 .

[0068] The telescopic mounting rod 243 is movably mounted in the mounting through hole 241. It should be noted that the length of the telescopic mounting rod 243 is 5-10 cm longer than half the length of the load-bearing longitudinal rod 21, and this 5-10 cm corresponds to the fixed length of the locking countersunk hole 242 for the telescopic mounting rod 243. For details, please refer to the attached manual. Figure 2 and attached Figure 4 The installation direction and position of the second U-shaped stepping support are determined according to actual needs, so that the center-hole I-shaped pipe fitting 244 can be installed to the left or right on the load-bearing longitudinal rod 21 to meet the usage habits of different user groups.

[0069] The centrally-holed I-shaped pipe fitting 244 is integrally connected to one end of the telescopic mounting rod 243 .

[0070] The hole-opening instrument 3 is used to open the installation hole group and the stress release hole group on the inner wall of the inspection well. The hole-opening instrument 3 includes a drill 31 and a slotter 32. Figure 16 With attached Figure 17 After determining each mounting hole position of the mounting hole group of the hole bracket 2, a slotter 32 is used to open stress relief grooves equidistantly distributed around the mounting hole position, and the stress relief grooves are radially arranged. Then, a drill 31 is used to open stress relief holes equidistantly distributed around the mounting hole position. The stress relief holes and the stress relief grooves are spaced apart so as to form a sufficient stress relief interval around the mounting hole position.

[0071] The stabilizing mechanism 4 is arranged on the movable support 1, and the movable support 1 is circumferentially translated along the top opening of the inspection well through the stabilizing mechanism 4. The stabilizing mechanism 4 includes an upper limit support component 41 and a lower limit support component 42 that respectively movably contact the top opening and the inner wall of the inspection well.

[0072] Further explanation:

[0073] The upper limit support assembly 41 includes a Y-shaped hydraulic long cavity 411, an upper bracket 412, a lower bracket 413, an elastic snap fastener 414, a ratchet head shaft 415, a threaded hole traction member 416, a lifting screw 417, a hydraulic piston tube 418, an I-shaped elastic piston 419, and a driven piston support roller 4110.

[0074] The Y-shaped oil pressure long cavity 411 is opened in the top of the movable support 1. It is worth noting that the Y-shaped oil pressure long cavity 411 has one opening at the upper end, which is arranged vertically upward, and two openings at the lower end, which are arranged vertically downward. The Y-shaped oil pressure long cavity 411 is filled with hydraulic oil located between the I-shaped elastic piston 419 and the driven piston support roller 4110. The viscosity of the hydraulic oil is used to improve the support stability, thereby realizing the buffer support effect.

[0075] The upper bracket 412 is integrally connected to the movable support 1 .

[0076] The lower bracket 413 is integrally connected to the movable support 1 and is located below the upper bracket 412. It should be noted that by arranging the upper bracket 412 and the lower bracket 413 in a cross-shaped structure, it is convenient to arrange the threaded hole pulling member 416 and the hydraulic piston tube 418 in layers, so that the hydraulic piston tube 418 can be adjusted to rise and fall according to the buffer support needs.

[0077] The elastic fastener 414 is movably arranged on the upper bracket 412. Figure 1 With attached Figure 6 , Attachment Figure 7 The elastic snap fastener 414 is composed of a traction spring and a rotatably installed L-shaped snap bolt. Under the elastic traction of the traction spring, the L-shaped snap bolt is connected to the ratchet snap on the ratchet head shaft 415 to limit the angle of the ratchet head shaft 415 rotated to a certain angle. In the absence of external force, the elastic snap fastener 414 is used to limit the ratchet head shaft 415, thereby ensuring that the angle and height position of the threaded hole traction member 416 are fixed.

[0078] The ratchet head shaft 415 is rotatably mounted in the upper bracket 412 , and the ratchet on the ratchet head shaft 415 movably contacts the elastic fastener 414 .

[0079] The threaded hole pulling member 416 is integrally connected to the ratchet head shaft 415 .

[0080] The lifting screw 417 is threadedly installed in the threaded hole of the threaded hole traction member 416. By rotating the ratchet head shaft 415, the threaded hole traction member 416 rotates synchronously, so that the lifting screw 417 performs a spiral lifting motion.

[0081] The hydraulic piston tube 418 is fixedly connected to the lifting screw 417. By adjusting the height position of the hydraulic piston tube 418, the I-shaped elastic piston 419 can have different degrees of expansion and contraction therein, thereby having different elastic coefficients, so as to ensure that the upper limit support assembly 41 can provide appropriate buffering support for the movable support 1 according to actual conditions.

[0082] The I-shaped elastic piston 419 is movably mounted in the upper opening of the Y-shaped oil pressure long cavity 411 and the lower opening of the oil pressure piston tube 418 .

[0083] The driven piston support roller 4110 is movably mounted in the lower opening of the Y-shaped oil pressure long cavity 411. By setting two symmetrical driven piston support rollers 4110, a balanced support in the vertical direction is provided for the movable support 1, ensuring that the movable support 1 can provide a stable support for the hole bracket 2.

[0084] The lower limit support assembly 42 includes an L-shaped long cavity 421, a lifting drive block 422, a T-shaped wedge elastic expansion member 423, and a limit support roller 425:

[0085] The L-shaped long cavity 421 is opened at the lower end of the inner side of the movable support 1 .

[0086] The lifting drive block 422 is longitudinally slidably mounted in the L-shaped long cavity 421, and an oblique cut 424 is provided in the lifting drive block 422. It is worth noting that a first driving cylinder for pulling and fixing the lifting drive block 422 can be provided in the L-shaped long cavity 421, so that the height position of the lifting drive block 422 can be adjusted.

[0087] The T-shaped wedge elastic expansion member 423 is laterally slidably sleeved in the L-shaped long cavity 421 , and the T-shaped wedge elastic expansion member 423 and the oblique cut 424 are movably opposed to each other.

[0088] The limiting support roller 425 is rotatably installed on the T-shaped wedge elastic telescopic part 423. By setting two limiting support rollers 425 that are movable against the inner wall of the inspection well, radial support is provided for the movable support 1 that is undergoing displacement, and together with the driven piston support roller 4110, the stability of the movable support 1 on the inspection well is maintained.

[0089] The uprighting mechanism 5 is arranged on the movable support 1, and the hole bracket 2 is always kept in a vertical downward state through the uprighting mechanism 5. The uprighting mechanism 5 includes a straightening component 51 for supporting the hole bracket 2 vertically downward, and the uprighting mechanism 5 also includes a limiting component 52 for fixing the hole bracket 2 vertically downward.

[0090] Further explanation:

[0091] The straightening assembly 51 includes a pendulum cantilever 511, a visual identifier 512, a plumb line scale 513, a servo control driver 514, a driving gear 515, and a driven half gear 516:

[0092] The pendulum cantilever 511 is rotatably mounted on the movable support 1 .

[0093] The visual identifier 512 is fixedly installed at the lower end of the pendulum cantilever 511 and is horizontally corresponding to the plumb line scale 513. The visual identifier 512 is preferably a high-definition camera device.

[0094] The plumb line scale 513 is integrally provided on the movable support 1. The portion of the movable support 1 where the plumb line scale 513 is provided is grayscaled and denoised to enhance the contrast between the object and the background. The pixel points of the object edge are then extracted using the Sobel operator and the Laplacian operator. The discrete edge points are fitted into a straight line through the Hough transform to obtain the straight line equation of the object edge.

[0095] The servo control driver 514 is fixedly mounted on the movable support 1. It is worth noting that the servo control driver 514 specifically includes a PLC control module and a drive motor. While processing data, the drive motor drives the drive gear 515 and the driven half gear 516 serving as the execution structure to operate, thereby correcting the angle of the pendulum cantilever 511.

[0096] The driving gear 515 is rotatably mounted on the movable support 1 through a servo-controlled driver 514 .

[0097] The driven half gear 516 is integrally connected to the pendulum cantilever 511 , and the driven half gear 516 is meshedly connected with the driving gear 515 , and the meshing connection between the two is utilized to achieve fine adjustment of the angle of the pendulum cantilever 511 .

[0098] The specific implementation includes the following steps:

[0099] First, the visual recognizer 512 needs to determine the image position of the plumb line: after using the camera as the visual recognizer 512 to capture the image, the pixel coordinates of the plumb line scale 513 are extracted through the edge detection algorithm and fitted to a straight line equation, that is, y=kx+b. When vertical, k is infinite, that is, the vertical line x=c;

[0100] Secondly, the edge of the pendulum cantilever 511 is detected and extracted: the discrete edge points are fitted into a straight line through Hough transform, and the straight line equation of the edge of the pendulum cantilever 511 is obtained, that is, y=k1x+b1;

[0101] Then, the verticality is determined by calculating the included angle: comparing the included angle θ between the edge straight line of the pendulum cantilever 511 and the plumb line:

[0102] If θ = 0°, the pendulum cantilever 511 is vertical;

[0103] If θ≠0°, the pendulum cantilever 511 is tilted, and the absolute value of θ is the tilt angle (for example, θ=3° means tilting 3° to the right).

[0104] The calculation method is as follows: using the angle between two straight lines with slopes k1 (the edge of the pendulum cantilever 511) and k2 (the plumb line, which has no slope when vertical and can be considered 90°) as follows: tanθ = |(k2-k1) / (1+k1k2)| (when the plumb line is a vertical line, it is simplified to |k1|, because k2 is infinite, and the angle θ = arctan|k1|);

[0105] Finally, the automatic correction is triggered according to the deviation: the correction amount is calculated according to the θ value (for example, it is necessary to rotate the pendulum cantilever 511 to the left by an angle of θ), and the tilt angle of the pendulum cantilever 511 is adjusted by driving the motor until θ=0°.

[0106] The limiting assembly 52 includes a telescopic traction member 521, a connecting hanger 522, an extension screw 523, and a T-shaped threaded tube resistance member 524:

[0107] The telescopic traction member 521 is slidably installed on the pendulum cantilever 511, and the telescopic traction member 521 is fixedly connected to the hole bracket 2. A second driving cylinder is provided on the pendulum cantilever 511 for pulling and fixing the telescopic traction member 521 to adjust the height position of the hole bracket 2 according to the step positioning of the installation hole group.

[0108] The connecting hanger 522 is fixedly arranged on the lower I-shaped pipe fitting 23 with opposite holes.

[0109] The extension screw 523 is integrally connected to the connecting hanger 522 .

[0110] The T-shaped threaded tube resistance piece 524 is threadedly connected to the extension screw rod 523, and a limiting through hole is provided at the lower end of the T-shaped threaded tube resistance piece 524. The T-shaped threaded tube resistance piece 524 is controlled to rise and fall spirally on the extension screw rod 523 until the T-shaped threaded tube resistance piece 524 abuts against the bottom of the inspection well, and then the screw is tightened through the limiting through hole to limit and fix the hole bracket 2 from below.

[0111] The hole-opening mechanism 6 is movably arranged on the hole-matching bracket 2, and the hole-opening mechanism 6 opens a mounting hole group and a stress release hole group on the inner wall of the inspection well through the hole-opening instrument 3. The hole-opening mechanism 6 includes a steering telescopic assembly 61 movably arranged on the load-bearing longitudinal rod 21. The hole-opening mechanism 6 also includes a driving assembly 62 arranged on the steering telescopic assembly 61 and used to fix and drive the drill 31 and the slotter 32.

[0112] Further explanation:

[0113] The steering telescopic assembly 61 includes a rotating sleeve rod 611, a telescopic inner rod 612, and a load-bearing hole plate 613:

[0114] The rotating sleeve rod 611 is rotatably installed at the middle end position of the load-bearing longitudinal rod 21. It should be noted that a servo motor is provided on the load-bearing longitudinal rod 21 to drive the rotating sleeve rod 611 to rotate, so that the rotating sleeve rod 611 drives the drill 31 and the slotter 32 to deflect.

[0115] The telescopic inner rod 612 is slidably installed in the rotating sleeve rod 611. The rotating sleeve rod 611 is provided with a third driving cylinder for pulling and fixing the telescopic inner rod 612 to drive the drill 31 and the slotter 32 to perform telescopic adjustment.

[0116] The load-carrying hole plate 613 is integrally connected to the telescopic inner rod 612 .

[0117] The driving assembly 62 includes a threaded guide rod 621, a limiting orifice plate 622, a return spring 623, a support plate 624, a limiting sleeve 625, a synchronous connecting rod 626, a limiting mounting seat 627, and a limiting nut 628:

[0118] The threaded head guide rod 621 is integrally provided on the load hole plate 613 .

[0119] The limiting orifice plate 622 is integrally connected to the threaded head guide rod 621. It should be noted that the limiting orifice plate 622 adopts a hollow annular structure, in which a plurality of high-pressure nozzles equidistantly distributed circumferentially are provided. While using the drill 31 to open the installation hole group, the high-pressure nozzle can be used through an external water supply pipe to spray cold water on the location where the installation hole group is opened in the inspection well to achieve wet drilling. While reducing the temperature of the opening part of the inspection well, it can also flush and clean the dust and debris generated by drilling.

[0120] The reset spring 623 is fixedly connected to the load-bearing hole plate 613, and the reset spring 623 is mounted on the threaded head guide rod 621. Under the tension support of the reset spring 623, the driller 31 and the slotter 32 automatically move away from the inner wall of the inspection well. Only under the action of human or external force can the two come into contact with the inner wall of the inspection well, and the stress relief groove, force relief hole and installation hole are opened.

[0121] The support plate 624 is fixedly connected to the return spring 623 , and the support plate 624 is slidably mounted on the threaded head guide rod 621 .

[0122] The limiting sleeve 625 is integrally connected to the support plate 624 to limit the output ends of the drill 31 and the slotter 32 .

[0123] The synchronization link 626 is integrally connected to the limiting sleeve 625 .

[0124] The limit mounting seat 627 is slidably mounted on the threaded head guide rod 621 to limit the positioning of the main bodies of the drill 31 and the slotter 32. A limit through hole for fixing the synchronous connecting rod 626 is opened in the limit mounting seat 627. The limit sleeve 625 and the limit mounting seat 627 are fixedly connected to each other for fixing the drill 31 or the slotter 32. The drill 31 and the slotter 32 are fixedly mounted using the limit sleeve 625 and the limit mounting seat 627 at a fixed distance. The drill 31 and the slotter 32 are then controlled to reciprocate linearly along the threaded head guide rod 621, thereby performing corresponding slotting and drilling operations on the inner wall of the inspection well.

[0125] The limiting nut 628 is threadedly installed on the threaded head guide rod 621 to limit and block the limiting mounting seat 627 elastically supported by the return spring 623.

[0126] The cross-section of the movable support 1 is an η-shaped structure, and the long end of the movable support 1 is located on the inner side of the inspection well, which helps to fit in the top opening position of the inspection well and perform circumferential displacement along the top opening of the inspection well.

[0127] The upper limit support assembly 41 is used to vertically support the movable support 1 at the top opening position of the inspection well, and the lower limit support assembly 42 is used to horizontally support the movable support 1 at the inner wall position of the inspection well, so as to perform common vertical and horizontal guidance and limitation on the movable support 1 movably mounted on the inspection well, thereby ensuring the stability and balance of the movable support 1, and on this basis further maintaining the verticality and stability of the hole bracket 2.

[0128] The straightening component 51 is arranged on the movable support 1, and the limiting component 52 is arranged on the straightening component 51 and the hole bracket 2. The straightening component 51 is used to straighten the pendulum cantilever 511, and the hole bracket 2 is raised and lowered while maintaining verticality, so that the hole bracket 2 can correspond to three pairs of installation hole groups.

[0129] The steering telescopic assembly 61 is used to drive the drill 31 and the slotter 32 to correspond to the upper I-shaped pipe fittings 22, the lower I-shaped pipe fittings 23 and the middle I-shaped pipe fitting group 24. The drill 31 and the slotter 32 are deflected and telescopically adjusted through the steering telescopic assembly 61 to facilitate corresponding slotting and drilling operations on the inner wall of the inspection well.

[0130] It should be noted that the specific models and specifications of the first drive cylinder, the second drive cylinder, the third drive cylinder, the hole opening instrument 3, the visual identifier 512, the servo control driver 514, the drive motor and the servo motor need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be repeated.

[0131] The present invention can be explained through the following operation mode:

[0132] Place the movable support 1 at the top opening of the inspection well;

[0133] The ratchet head shaft 415 is controlled to rotate on the upper bracket 412, so that the threaded hole pulling member 416 rotates, and the hydraulic piston tube 418 is pulled by the lifting screw 417, so that the I-shaped elastic piston 419 can be extended and retracted in the hydraulic piston tube 418, so that the driven piston support roller 4110 that elastically retracts and retracts in the Y-shaped hydraulic long cavity 411 can be flexibly abutted against the top opening of the inspection well;

[0134] The lifting drive block 422 is controlled to move vertically downward on the movable support 1. The lifting drive block 422 applies pressure to the T-shaped wedge elastic expansion member 423 through the oblique cut 424, so that the limiting support roller 425 is movable against the inner wall of the inspection well;

[0135] The movable support 1 is moved in a balanced manner on the inspection well by the driven piston supporting roller 4110 and the limiting supporting roller 425;

[0136] The visual recognition device 512 is used to obtain the position information of the pendulum cantilever 511 relative to the plumb line scale 513 on the movable support 1. The servo control driver 514 is used to control and analyze whether the pendulum cantilever 511 is in a vertical state. If not, the servo control driver 514 controls the driving gear 515 to rotate, and uses the driven half gear 516 to drive the pendulum cantilever 511 to deflect until the pendulum cantilever 511 maintains a vertical state.

[0137] The telescopic traction member 521 is controlled to move up and down on the pendulum cantilever 511 to drive the hole bracket 2 to move up and down to the position corresponding to the three pairs of mounting hole groups, and the T-shaped threaded pipe abutment member 524 is driven to move downward along the extension screw 523 until the hole bracket 2 is supported and fixed in the inspection well;

[0138] First, clamp the slotter 32 between the limiting sleeve 625 and the limiting mounting seat 627, lock and fix the synchronous connecting rod 626 on the limiting mounting seat 627, and tighten the limiting nut 628 on the threaded head guide rod 621 to limit the limiting mounting seat 627. Control the slotter 32 to open on the threaded head guide rod 621, and at the same time control the deflection of the rotating sleeve rod 611 and the extension and contraction of the telescopic inner rod 612. Compare with the upper hole I-shaped pipe fitting 22, the middle hole I-shaped pipe fitting 244, and the lower hole I-shaped pipe fitting 23 to open four circumferentially equidistant stress relief grooves on the inner wall of the inspection well;

[0139] After replacing the slotter 32, the drill 31 is loaded in the above manner, the drill 31 is controlled to open, and the rotating sleeve 611 is controlled to deflect and the telescopic inner rod 612 is controlled to extend and retract, and four axially equidistantly distributed stress relief holes are opened on the inner wall of the inspection well in accordance with the upper hole I-shaped pipe fitting 22, the middle hole I-shaped pipe fitting 244, and the lower hole I-shaped pipe fitting 23;

[0140] An ice water pipe is laid in the stress relief groove, and propylene glycol coolant is poured into the stress relief hole. It should be noted that the propylene glycol coolant can be preferably packaged in capsules, and then the stress relief groove and the stress relief hole are sealed by laying carbon fiber cloth or applying epoxy resin.

[0141] A drilling tool 31 is used to open a mounting hole group on the inner wall of the inspection well, and at the same time, a high-pressure nozzle on the limiting orifice plate 622 is used to spray cold water on the mounting hole group portion to perform wet drilling.

[0142] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tool for positioning and drilling a manhole step, comprising a movable support (1), a hole-aligning bracket (2) and a hole-drilling instrument (3): The movable support (1) is movably mounted on the top opening of the tubular inspection well; The hole bracket (2) corresponds to three pairs of mounting hole groups distributed in an equilateral triangle on the inner wall of the inspection well; The hole opening instrument (3) is used to open a mounting hole group and a stress relief hole group on the inner wall of the inspection well; It is characterized by: Also includes: A stabilization mechanism (4), wherein the stabilization mechanism (4) is arranged on the movable support (1), and the movable support (1) is circumferentially translated along the top opening of the inspection well through the stabilization mechanism (4); A straightening mechanism (5), wherein the straightening mechanism (5) is arranged on the movable support (1), and the hole bracket (2) is always kept in a vertical downward state by the straightening mechanism (5); A hole-opening mechanism (6) is movably arranged on the hole-matching bracket (2), and the hole-opening mechanism (6) opens a mounting hole group and a stress release hole group on the inner wall of the inspection well through a hole-opening instrument (3).

2. The inspection well step positioning and drilling tool according to claim 1, characterized in that: The cross section of the movable support (1) is an η-shaped structure, and the long end of the movable support (1) is located inside the inspection well.

3. The inspection well step positioning and drilling tool according to claim 1, characterized in that: The hole-matching bracket (2) comprises a load-bearing longitudinal rod (21), wherein upper and lower ends of the load-bearing longitudinal rod (21) are respectively fixedly connected to an upper hole-matching I-shaped pipe fitting (22) and a lower hole-matching I-shaped pipe fitting (23), and a middle hole-matching I-shaped pipe fitting group (24) is provided at the middle end of the load-bearing longitudinal rod (21).

4. The inspection well step positioning and drilling tool according to claim 1, characterized in that: The hole-opening instrument (3) comprises a drill (31) and a slotter (32).

5. The inspection well step positioning and drilling tool according to claim 1, characterized in that: The stabilization mechanism (4) comprises an upper limit support assembly (41) and a lower limit support assembly (42) that movably contact the top opening and the inner wall of the inspection well, respectively.

6. The inspection well step positioning and drilling tool according to claim 5, characterized in that: The upper limit support assembly (41) is used to vertically support the movable support (1) at the top opening position of the inspection well, and the lower limit support assembly (42) is used to horizontally support the movable support (1) at the inner wall position of the inspection well.

7. The inspection well step positioning and drilling tool according to claim 1, characterized in that: The uprighting mechanism (5) comprises a straightening component (51) for supporting the hole-aligning bracket (2) to move vertically downward, and the uprighting mechanism (5) further comprises a limiting component (52) for fixing the hole-aligning bracket (2) to move vertically downward.

8. The inspection well step positioning and drilling tool according to claim 7, characterized in that: The alignment component (51) is arranged on the movable support (1), and the limiting component (52) is arranged on the alignment component (51) and the hole-matching bracket (2).

9. The inspection well step positioning and drilling tool according to claim 1, characterized in that: The hole-opening mechanism (6) includes a steering telescopic assembly (61) movably arranged on the load-bearing longitudinal rod (21), and the hole-opening mechanism (6) also includes a driving assembly (62) arranged on the steering telescopic assembly (61) and used to fix and drive the drill (31) and the slotter (32).

10. The inspection well step positioning and drilling tool according to claim 9, characterized in that: The steering telescopic assembly (61) is used to drive the drill (31) and the slotter (32) to correspond to the upper I-shaped pipe fitting (22), the lower I-shaped pipe fitting (23) and the middle I-shaped pipe fitting group (24).

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