Hole opening device for construction project detection

Abstract

The invention discloses a perforating device for construction engineering detection, which comprises a base and an auxiliary positioning assembly, a lifting seat is fixedly connected to the top of the base, a driving part is movably connected to the front surface of the lifting seat, a perforating tool is arranged in the middle of the bottom of the driving part, and the auxiliary positioning assembly comprises a workpiece positioning seat. The workpiece positioning seat is fixedly connected to the front side of the top of the base, first rotating frames are fixedly connected to the front and rear sides of the top of the workpiece positioning seat, and first rubber clamping plates are rotationally connected to the middles of the first rotating frames. The water curtain water spraying head is arranged to spray water on the outer side of the trepanning tool from bottom to top to form a water curtain, the water curtain achieves rapid sedimentation of aerosol particles through the collision and condensation effect of liquid drops and dust, the dust in the air can be reduced during trepanning, the working environment is improved, meanwhile, the water curtain serves as a natural diaphragm, and the water curtain is not prone to falling off. The processing spark brightness can be attenuated by 3-4 orders of magnitude, the visual sensor is protected from overexposure damage, and convenience is provided for subsequent detection.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, in particular to a hole opening device for construction engineering detection. Background Art

[0002] Construction engineering refers to the whole process of combining construction materials, technology, equipment and manpower to build buildings, structures and related facilities that meet the production and living needs of human beings through planning, design, construction and management. It is an important part of the field of engineering construction and covers various types such as residential, commercial, public facilities, industrial plants, bridges, roads, etc.

[0003] The Chinese patent application number CN202322094070.5 discloses a hole-opening device for construction engineering inspection. Although the application realizes the setting of a liquid storage tank when in use, the liquid storage tank can store the coolant needed for use, and with the cooperation of the water pump, the coolant can be transported to the hose through the infusion tube, and then transported to the connecting pipe through the hose, and then the coolant is sprayed through the spray head. However, when in use, the application uses the coolant to spray directly onto the opening, which causes the dust generated during cutting to escape into the air, which is easy to cause environmental pollution. Improvements need to be made to this problem. Summary of the invention

[0004] The purpose of the present invention is to provide a hole-opening device for construction engineering inspection to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a hole-opening device for construction engineering inspection, comprising a base and an auxiliary positioning assembly, wherein a lifting seat is fixedly connected to the top of the base, a driving member is movably connected to the front of the lifting seat, and a hole-opening tool is arranged in the middle of the bottom of the driving member.

[0006] Wherein, the auxiliary positioning component includes: The workpiece positioning seat is fixedly connected to the front side of the top of the base, the front and rear sides of the top of the workpiece positioning seat are fixedly connected to a rotating frame, the middle part of the rotating frame is rotatably connected to a rubber clamping plate, the top of the rubber clamping plate is fixedly connected to a circular roller, the outer side of the rubber clamping plate is fixedly connected to a connecting plate, the outer top of the workpiece positioning seat is fixedly connected to a supporting base plate, the top of the supporting base plate is fixedly connected to a spring, and the rubber clamping plate can rotate in the middle part of the rotating frame.

[0007] According to the above technical solution, it also includes a driving component, which consists of a driving slot, a driving motor, a lead screw, a ball nut pair, a driving frame, a push plate, an adjustment frame, a second rubber clamping plate and a second rotating frame.

[0008] The driving groove is fixedly connected to the middle part of the left side of the workpiece positioning seat, the driving motor is fixedly connected to the side of the driving groove away from the workpiece positioning seat, the driving motor has an output shaft, the screw is fixedly connected to the output shaft of the driving motor, the ball nut pair is threadedly connected to the outside of the screw, the driving frame is fixedly connected to the top of the ball nut pair, the push plate is rotatably connected to the middle part of the driving frame, the adjusting frame is rotatably connected to the other side of the push plate, the second rubber clamping plate is fixedly connected to the side of the adjusting frame away from the push plate, the second rotating frame is fixedly connected to the left and right sides of the top of the workpiece positioning seat, and the ball nut pair can push the push plate through the driving frame when moving, and make the adjusting frame and the second rubber clamping plate subject to force.

[0009] According to the above technical solution, it also includes a liquid spray component, which consists of a liquid storage tank, a liquid outlet pipe, a water pump, a connecting pipe, a diverter pipe, a spring connecting pipe, a water inlet pipe, a guide pipe rack, a fixed mounting plate and a water curtain sprinkler head.

[0010] The liquid storage tank is fixedly connected to the rear side of the top of the base, the liquid outlet pipe is fixedly connected to the front side of the liquid storage tank, the water pump is fixedly connected to the front end of the liquid outlet pipe, the connecting pipe is fixedly connected to the front side of the water pump, the shunt pipe is fixedly connected to the front end of the connecting pipe, the spring connecting pipe is fixedly connected to the front side of the shunt pipe, the water inlet pipe is fixedly connected to the end of the spring connecting pipe away from the shunt pipe, the guide pipe rack is fixedly connected to the other end of the water inlet pipe, the fixed mounting plate is fixedly connected to the top of the second outer side of the rubber clamping plate, the water curtain sprinkler head is fixedly connected to the inside of the fixed mounting plate, and the water pump can draw out the coolant in the liquid storage tank when working, and introduce it into the connecting pipe through the liquid outlet pipe and the water pump, and make the connecting pipe introduce the coolant into the water inlet pipe through the shunt pipe and the spring connecting pipe.

[0011] According to the above technical solution, the driving member can be lifted and lowered outside the lifting seat, and the end of the spring away from the supporting bottom plate is fixedly connected to the bottom of the connecting plate, and the spring can support the connecting plate and the rubber clamping plate.

[0012] According to the above technical solution, interconnected drainage holes are provided in the middle of the bottom of the workpiece positioning seat and inside the base, so as to discharge the coolant accumulated in the workpiece positioning seat.

[0013] According to the above technical solution, the output shaft of the driving motor passes through the outer wall of the driving groove and extends into the driving groove to be fixedly connected to the lead screw. One end of the lead screw is away from the output shaft of the driving motor and is rotatably connected to the inner wall of the driving groove. The driving motor can drive the lead screw to rotate when working.

[0014] According to the above technical solution, the inner bottom of the second rubber clamping plate is rotatably connected to the middle of the second rotating frame, and the second rubber clamping plate can rotate in the middle of the second rotating frame.

[0015] According to the above technical solution, the bottom of the water curtain spray head is fixedly connected to the top of the guide pipe rack, and the water curtain spray head is communicated with the inside of the guide pipe rack.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The water curtain spray head can spray from bottom to top on the outside of the hole-opening tool to form a water curtain. The water curtain can achieve rapid sedimentation of aerosol particles through the collision and condensation of droplets and dust, which can reduce dust in the air when opening holes and improve the working environment. At the same time, the water curtain can act as a natural aperture to attenuate the brightness of processing sparks by 3-4 orders of magnitude, protect the visual sensor from overexposure damage, and provide convenience for subsequent detection; 2. The water curtain sprayed by the water curtain sprinkler head is shielded on the outside of the hole-opening tool. Since the water curtain can block part of the noise and eliminate the instantaneous sound pressure peak, the noise during the hole-opening is smaller and more environmentally friendly. 3. The spherical workpiece is clamped by setting the rubber clamping plate 1 and the rubber clamping plate 2. Due to the material characteristics of the rubber clamping plate 1 and the rubber clamping plate 2, the rubber clamping plate 1 and the rubber clamping plate 2 can be elastically deformed along with the curvature of the spherical surface, and can be attached to the outer surface of the spherical workpiece. Compared with the traditional three-point clamping of metal clamps, the clamping is greatly improved, and at the same time, the stress concentration phenomenon caused by the traditional three-point clamping can be eliminated, and deformation caused by excessive local stress can be avoided; 4. By setting the rubber clamping plate 1 and the rubber clamping plate 2 to clamp the spherical workpiece, it is possible to prevent damage to the outer surface of the spherical workpiece during clamping. At the same time, the shock-absorbing performance of the rubber can reduce vibration during processing, improve the accuracy of hole opening, and extend the service life of the hole opening tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the workpiece positioning seat of the present invention; Figure 3 yes Figure 2 The enlarged schematic diagram at A in the middle; Figure 4 It is a schematic diagram of the driving slot of the present invention; Figure 5 yes Figure 4 The enlarged schematic diagram of point B in the middle; Figure 6 It is a schematic diagram of a water pump of the present invention; Figure 7It is a schematic diagram of the water curtain sprinkler head of the present invention.

[0018] In the figure: 1, base; 2, lifting seat; 3, driving member; 4, drilling tool; 5, auxiliary positioning assembly; 501, workpiece positioning seat; 502, rotating frame 1; 503, rubber clamping plate 1; 504, connecting plate; 505, supporting bottom plate; 506, spring; 507, circular roller; 6, driving assembly; 601, driving groove; 602, driving motor; 603, lead screw; 604, ball nut pair; 605, driving frame; 606, push plate; 607, adjusting frame; 608, rubber clamping plate 2; 609, rotating frame 2; 7, spray assembly; 701, liquid storage tank; 702, liquid outlet pipe; 703, water pump; 704, connecting pipe; 705, shunt pipe; 706, spring connecting pipe; 707, water inlet pipe; 708, guide pipe rack; 709, fixed mounting plate; 710, water curtain sprinkler head. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] For example, see Figure 1-3 The present invention provides a technical solution: a hole-opening device for construction engineering inspection, including a base 1 and an auxiliary positioning component 5. A lifting seat 2 is fixedly connected to the top of the base 1, and a driving member 3 is movably connected to the front of the lifting seat 2. A hole-opening tool 4 is arranged in the middle of the bottom of the driving member 3.

[0022] Wherein, the auxiliary positioning component 5 includes: The workpiece positioning seat 501 is fixedly connected to the front side of the top of the base 1, the front and rear sides of the top of the workpiece positioning seat 501 are fixedly connected with a rotating frame 502, the middle part of the rotating frame 502 is rotatably connected with a rubber clamping plate 503, the top of the rubber clamping plate 503 is fixedly connected with a circular roller 507, the outer side of the rubber clamping plate 503 is fixedly connected with a connecting plate 504, the outer top of the workpiece positioning seat 501 is fixedly connected with a supporting base plate 505, the top of the supporting base plate 505 is fixedly connected with a spring 506, and the rubber clamping plate 503 can rotate in the middle of the rotating frame 502.

[0023] The driving member 3 can be lifted and lowered outside the lifting seat 2. The end of the spring 506 away from the supporting bottom plate 505 is fixedly connected to the bottom of the connecting plate 504. The spring 506 can support the connecting plate 504 and the rubber clamping plate 503.

[0024] A connected drainage hole is provided in the middle of the bottom of the workpiece positioning seat 501 and inside the base 1 , so as to discharge the coolant accumulated in the workpiece positioning seat 501 .

[0025] When it is necessary to clamp and open a hole on a spherical workpiece, the spherical workpiece is pressed downward between the two circular rollers 507 on the top of the rubber clamping plate 503, so that the spherical workpiece can enter the top of the workpiece positioning seat 501 through the top of the circular roller 507 and be placed on the top of the workpiece positioning seat 501. Since the top of the workpiece positioning seat 501 is an arc-shaped groove, the center of gravity of the spherical workpiece can be automatically aligned. At the same time, the spring 506 elastically recovers and can push the rubber clamping plate 503 and the connecting plate 504 to reset. Since a spherical workpiece is placed on the top of the workpiece positioning seat 501, the rubber clamping plate 503 can fit the front and back sides of the spherical workpiece, thereby performing auxiliary positioning and clamping work.

[0026] For example 2, please refer to Figure 1-7 On the basis of the first embodiment, the present invention provides a technical solution: it also includes a driving component 6, the driving component 6 is composed of a driving slot 601, a driving motor 602, a lead screw 603, a ball nut pair 604, a driving frame 605, a push plate 606, an adjusting frame 607, a rubber clamping plate 608 and a rotating frame 609.

[0027] The driving groove 601 is fixedly connected to the middle part of the left side of the workpiece positioning seat 501, the driving motor 602 is fixedly connected to the side of the driving groove 601 away from the workpiece positioning seat 501, the driving motor 602 has an output shaft, the screw 603 is fixedly connected to the output shaft of the driving motor 602, the ball nut pair 604 is threadedly connected to the outside of the screw 603, the driving frame 605 is fixedly connected to the top of the ball nut pair 604, the push plate 606 is rotatably connected to the middle part of the driving frame 605, the adjusting frame 607 is rotatably connected to the other side of the push plate 606, the rubber clamping plate 608 is fixedly connected to the side of the adjusting frame 607 away from the push plate 606, the rotating frame 609 is fixedly connected to the left and right sides of the top of the workpiece positioning seat 501, and the ball nut pair 604 can push the push plate 606 through the driving frame 605 when moving, and make the adjusting frame 607 and the rubber clamping plate 608 subject to force.

[0028] It also includes a liquid spray component 7, which consists of a liquid storage tank 701, a liquid outlet pipe 702, a water pump 703, a connecting pipe 704, a diversion pipe 705, a spring connecting pipe 706, a water inlet pipe 707, a guide pipe rack 708, a fixed installation plate 709 and a water curtain sprinkler head 710.

[0029] The liquid storage tank 701 is fixedly connected to the rear side of the top of the base 1, the liquid outlet pipe 702 is fixedly connected to the front of the liquid storage tank 701, the water pump 703 is fixedly connected to the front end of the liquid outlet pipe 702, the connecting pipe 704 is fixedly connected to the front of the water pump 703, the shunt pipe 705 is fixedly connected to the front end of the connecting pipe 704, the spring connecting pipe 706 is fixedly connected to the front of the shunt pipe 705, the water inlet pipe 707 is fixedly connected to the end of the spring connecting pipe 706 away from the shunt pipe 705, and the guide pipe frame 708 is fixedly connected to the front end of the connecting pipe 704. Fixedly connected to the other end of the water inlet pipe 707, the fixed mounting plate 709 is fixedly connected to the outer top of the rubber clamping plate 608, and the water curtain sprinkler head 710 is fixedly connected to the inside of the fixed mounting plate 709. When the water pump 703 is working, it can extract the coolant in the liquid storage tank 701, and introduce it into the connecting pipe 704 through the liquid outlet pipe 702 and the water pump 703, and make the connecting pipe 704 introduce the coolant into the water inlet pipe 707 through the shunt pipe 705 and the spring connecting pipe 706.

[0030] The output shaft of the driving motor 602 passes through the outer wall of the driving groove 601 and extends into the driving groove 601 to be fixedly connected to the lead screw 603. One end of the lead screw 603 is away from the output shaft of the driving motor 602 and is rotatably connected to the inner wall of the driving groove 601. The driving motor 602 can drive the lead screw 603 to rotate when working.

[0031] The inner bottom of the second rubber clamping plate 608 is rotatably connected to the middle of the second rotating frame 609 , and the second rubber clamping plate 608 can rotate in the middle of the second rotating frame 609 .

[0032] The bottom of the water curtain sprinkler head 710 is fixedly connected to the top of the guide pipe frame 708 , and the water curtain sprinkler head 710 is communicated with the inside of the guide pipe frame 708 .

[0033] When it is necessary to clamp the spherical workpiece, the spherical workpiece is placed on the top of the workpiece positioning seat 501, and the front and rear sides of the spherical workpiece are positioned by the rubber clamping plate 503, and then the driving motor 602 is started to work, so that the driving motor 602 can drive the screw 603 to rotate during operation, and the ball nut pair 604 can move on the outside of the screw 603, and the driving frame 605 on the top of the ball nut pair 604 moves accordingly, so that when the driving frame 605 moves, the adjustment frame 607 is pushed by the push plate 606, so that the rubber clamping plate 608 rotates on the inside of the rotating frame 609, and the rubber clamping plate 608 is attached to the outside of the spherical workpiece, so that the rubber clamping plate 608 can clamp the outside of the spherical workpiece, and by arranging the rubber clamping plate 503 and the rubber clamping plate 608 to cooperate with each other to clamp the spherical workpiece, the spherical workpiece will not be displaced due to poor clamping effect when a hole is opened later.

[0034] After the rubber clamping plate 1 503 cooperates with the rubber clamping plate 2 608 to clamp the spherical workpiece, the driving member 3 is controlled to work so that the hole-making tool 4 can rotate, and the driving member 3 is controlled to move downward on the outside of the lifting seat 2 so that the hole-making tool 4 can contact the top of the spherical workpiece and perform hole-making work on the spherical workpiece. At this time, the water pump 703 is controlled to work so that the water pump 703 can extract the coolant in the liquid storage tank 701 and introduce it into the liquid outlet pipe 702, the water pump 703 and the connecting pipe 704. The coolant is then sent into the shunt pipe 705 by the spring connecting pipe 706 on the shunt pipe 705 into the water inlet pipe 707, and then the coolant is sprayed out through the water curtain sprinkler head 710 on the guide pipe rack 708. The sprayed coolant can form an arc-shaped water curtain in the air and cover the outside of the hole-opening tool 4. When the hole-opening tool 4 makes a hole in the spherical workpiece, the generated dust can be extinguished to prevent the dust generated by the hole-opening tool 4 from being lifted into the air when making a hole in the spherical workpiece.

[0035] When the hole-punching tool 4 is drilling a hole in the spherical workpiece, the coolant sprayed by the water curtain sprinkler head 710 blocks the generated dust and, under the action of gravity, flows downward along the outer surface of the hole-punching tool 4. The coolant can cool the hole-punching tool 4 while drilling a hole in the spherical workpiece, and at the same time cool the hole in the spherical workpiece, thereby avoiding deformation of the spherical workpiece due to increased temperature.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hole-opening device for construction engineering inspection, comprising a base (1), characterized in that: It also includes an auxiliary positioning component (5), wherein the top of the base (1) is fixedly connected to a lifting seat (2), the front of the lifting seat (2) is movably connected to a driving member (3), and a hole-opening tool (4) is provided in the middle of the bottom of the driving member (3); Wherein, the auxiliary positioning component (5) comprises: A workpiece positioning seat (501) is fixedly connected to the front side of the top of the base (1); the front and rear sides of the top of the workpiece positioning seat (501) are fixedly connected to a rotating frame (502); the middle of the rotating frame (502) is rotatably connected to a rubber clamping plate (503); the top of the rubber clamping plate (503) is fixedly connected to a circular roller (507); the outer side of the rubber clamping plate (503) is fixedly connected to a connecting plate (504); the top of the outer side of the workpiece positioning seat (501) is fixedly connected to a supporting bottom plate (505); the top of the supporting bottom plate (505) is fixedly connected to a spring (506); and the rubber clamping plate (503) can rotate in the middle of the rotating frame (502).

2. A construction engineering inspection hole opening device according to claim 1, characterized in that: It also includes a driving assembly (6), wherein the driving assembly (6) is composed of a driving slot (601), a driving motor (602), a lead screw (603), a ball nut pair (604), a driving frame (605), a push plate (606), an adjustment frame (607), a second rubber clamping plate (608) and a second rotating frame (609); The driving groove (601) is fixedly connected to the middle of the left side of the workpiece positioning seat (501), the driving motor (602) is fixedly connected to the side of the driving groove (601) away from the workpiece positioning seat (501), the driving motor (602) has an output shaft, the lead screw (603) is fixedly connected to the output shaft of the driving motor (602), the ball nut pair (604) is threadedly connected to the outside of the lead screw (603), the driving frame (605) is fixedly connected to the top of the ball nut pair (604), and the push plate (606) is fixedly connected to the top of the ball nut pair (604). ) is rotatably connected to the middle part of the driving frame (605), the adjusting frame (607) is rotatably connected to the other side of the push plate (606), the rubber clamping plate 2 (608) is fixedly connected to the side of the adjusting frame (607) away from the push plate (606), the rotating frame 2 (609) is fixedly connected to the left and right sides of the top of the workpiece positioning seat (501), and the ball nut pair (604) can push the push plate (606) through the driving frame (605) when moving, and make the adjusting frame (607) and the rubber clamping plate 2 (608) subject to force.

3. A construction engineering inspection hole opening device according to claim 2, characterized in that: It also includes a liquid spray assembly (7), the liquid spray assembly (7) consisting of a liquid storage tank (701), a liquid outlet pipe (702), a water pump (703), a connecting pipe (704), a flow distribution pipe (705), a spring connecting pipe (706), a water inlet pipe (707), a flow guide pipe frame (708), a fixed installation plate (709), and a water curtain sprinkler head (710); The liquid storage tank (701) is fixedly connected to the rear side of the top of the base (1); the liquid outlet pipe (702) is fixedly connected to the front side of the liquid storage tank (701); the water pump (703) is fixedly connected to the front end of the liquid outlet pipe (702); the connecting pipe (704) is fixedly connected to the front side of the water pump (703); the flow diversion pipe (705) is fixedly connected to the front end of the connecting pipe (704); the spring connecting pipe (706) is fixedly connected to the front side of the flow diversion pipe (705); the water inlet pipe (707) is fixedly connected to the end of the spring connecting pipe (706) away from the flow diversion pipe (705); and the guide pipe (708) is fixedly connected to the front end of the connecting pipe (708). The flow pipe rack (708) is fixedly connected to the other end of the water inlet pipe (707), the fixed mounting plate (709) is fixedly connected to the outer top of the second rubber clamping plate (608), and the water curtain spray head (710) is fixedly connected to the inside of the fixed mounting plate (709). When the water pump (703) is working, it can extract the coolant in the liquid storage tank (701) and introduce it into the connecting pipe (704) through the liquid outlet pipe (702) and the water pump (703), and the connecting pipe (704) can introduce the coolant into the water inlet pipe (707) through the diverter pipe (705) and the spring connecting pipe (706).

4. A construction engineering inspection hole opening device according to claim 3, characterized in that: The driving member (3) can be lifted and lowered outside the lifting seat (2); one end of the spring (506) away from the supporting bottom plate (505) is fixedly connected to the bottom of the connecting plate (504); and the spring (506) can support the connecting plate (504) and the rubber clamping plate (503).

5. A construction engineering inspection hole opening device according to claim 4, characterized in that: A connected drainage hole is provided in the middle of the bottom of the workpiece positioning seat (501) and inside the base (1), so as to discharge the coolant accumulated in the workpiece positioning seat (501).

6. A construction engineering inspection hole opening device according to claim 5, characterized in that: The output shaft of the drive motor (602) passes through the outer wall of the drive groove (601) and extends into the drive groove (601) to be fixedly connected to the lead screw (603); one end of the lead screw (603) away from the output shaft of the drive motor (602) is rotatably connected to the inner wall of the drive groove (601); the drive motor (602) can drive the lead screw (603) to rotate when working.

7. A construction engineering inspection hole-opening device according to claim 6, characterized in that: The inner bottom of the second rubber clamping plate (608) is rotatably connected to the middle of the second rotating frame (609), and the second rubber clamping plate (608) can rotate in the middle of the second rotating frame (609).

8. A construction engineering inspection hole-opening device according to claim 7, characterized in that: The bottom of the water curtain spray head (710) is fixedly connected to the top of the flow guide pipe rack (708), and the water curtain spray head (710) is communicated with the inside of the flow guide pipe rack (708).

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