A pressure relief drilling device with verifiable depth

Abstract

The application discloses a pressure relief drilling device with depth inspection function, which comprises a main beam, a guide rail protection mechanism, a power mechanism, a pneumatic supporting mechanism and a fork frame. A reinforcing rib is fixed on one side of the main beam, and the side of the reinforcing rib away from the main beam is rotationally connected with a base. One end of the reinforcing rib penetrates through the base and is connected with a first pneumatic motor fixedly installed on the base. The pressure relief drilling device with depth inspection function is provided with the pneumatic supporting mechanism, an angular displacement sensor and a linear displacement sensor. When the power mechanism drives the auger or drill rod to move, the pneumatic supporting mechanism moves with the power mechanism. At this time, the linear displacement sensor monitors the moving distance of the pneumatic mechanism. When the pneumatic supporting mechanism contacts and is fixed on the stop block, the auger or drill rod is continuously driven to penetrate into the coal seam. At this time, the supporting wheel rotates, and the angular displacement sensor monitors the rotating angle of the supporting wheel. Through the cooperation of the linear displacement sensor and the angular displacement sensor, the drilling depth of the drilling device can be monitored in real time.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically to a pressure-relief drilling device capable of verifying depth. Background Technology

[0002] During coal mining, methane gas tends to accumulate in the coal seam. In order to reduce the methane pressure in the coal seam and improve the safety of coal mining, it is necessary to drill holes to release the pressure in the coal seam.

[0003] In practical use, the rotation angle of the drilling device is limited due to the support column structure, making it difficult to achieve perpendicularity to the ground and perform drilling operations. Existing drilling devices typically lack guide rail protection mechanisms, inevitably generating significant dust during underground drilling operations. Furthermore, detached coal fragments directly contact the guide rails, causing contamination and reducing the device's accuracy. Additionally, existing devices lack depth verification and recording structures. Drilling operations usually require splicing drill bits with multiple drill rods, making manual counting prone to errors. Relying solely on drill rod counting results in excessive error and makes accurate depth determination difficult. Moreover, the lack of auxiliary support structures and the resulting long length of the drill bit and drill rods during splicing can lead to self-vibration, excessive drill bit swing, and eventual damage. Therefore, improvements to the existing equipment are necessary to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a pressure-relief drilling device capable of verifying depth, thereby solving the problems mentioned in the background art, such as the difficulty of the drilling device being perpendicular to the ground for drilling operations, the lack of a guide rail protection mechanism in existing drilling devices, which makes the guide rail easily contaminated and reduces the accuracy of the drilling device, the lack of a depth verification and recording structure in existing drilling devices, the susceptibility to errors due to manual counting, and the excessive error due to counting the drill rod alone, making it difficult to accurately determine the drilling depth, and the lack of an auxiliary support structure in existing drilling devices, which makes them prone to self-vibration during drilling operations, leading to excessive swinging of the drill bit and subsequent damage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pressure relief drilling device capable of verifying depth, comprising a main beam, a guide rail protection mechanism, a power mechanism, a pneumatic support mechanism, and a fork. A reinforcing rib is fixed on one side of the main beam, and the side of the reinforcing rib away from the main beam is rotatably connected to the base. One end of the reinforcing rib passes through the base and is connected to a first pneumatic motor fixedly installed on the base. An air compressor is fixedly installed at the bottom of the base.

[0006] The main beam has a first groove on its outer side, and a guide rail protection mechanism is provided inside the first groove. A first slide rail is provided on the surface of the first groove, and a power mechanism is installed inside the first slide rail. The pneumatic support mechanism is slidably installed on a second slide rail, and the second slide rail is fixed to the surface of the main beam.

[0007] Preferably, a stop block is fixedly provided at the end of the main beam away from the power mechanism, and a first magnetic switch is installed inside the stop block. A top column is provided at the end of the power mechanism near the stop block, and a second magnetic switch is installed at the end of the top column near the stop block. The pneumatic support mechanism is located between the stop block and the power mechanism, and one side of the pneumatic support mechanism is magnetically connected to the second magnetic switch.

[0008] By adopting the above technical solution, when feeding the auger, the power mechanism moves and the support mechanism moves accordingly through the push column. When adding a drill rod between the auger and the power mechanism, the first magnetic switch and the second magnetic switch are switched to fix the pneumatic support mechanism on the stop block, so that the pneumatic support structure can be adjusted according to the position of the drill rod and the auger in the drilling device.

[0009] Preferably, the reinforcing rib is located in the middle of the main beam, and the distance between the reinforcing rib and the farthest end of the main beam is less than the height of the base;

[0010] By adopting the above technical solution, the main beam can rotate around the connection between the reinforcing rib and the base, thus avoiding collisions between the main beam and the ground during rotation.

[0011] Preferably, the guide rail protection mechanism includes a pressure roller and a rubber sealing strip. The rubber sealing strip is wrapped and fitted onto the surface of the first groove, and the rubber sealing strip covers the outside of the power mechanism. The pressure roller is rotatably mounted on the inner wall of the first groove, and the pressure roller is in contact with the surface of the rubber sealing strip.

[0012] By adopting the above technical solution, the pressure roller pushes the rubber sealing strip to stick tightly to the inner wall of the first groove, which can completely seal the first guide rail and protect the first guide rail from the influence of harsh external environment.

[0013] Preferably, the power mechanism includes a slide table, a second pneumatic motor, a second groove, a rack and a third pneumatic motor. The slide table is slidably mounted on a first slide rail, and the second pneumatic motor is installed inside the slide table. A second groove is provided in the middle of the first slide rail, and a rack is fixedly installed inside the second groove. The second pneumatic motor extends into the second groove and meshes with the rack. The third pneumatic motor is fixedly installed on the top of the slide table.

[0014] By adopting the above technical solution, the second pneumatic motor cooperates with the rack to push the slide table along one end of the first slide rail, thereby completely feeding the auger or drill rod.

[0015] Preferably, the pneumatic support mechanism includes a carriage, a rotating disk, an electrical slip ring, a stepped hole, and a three-rod pneumatic mechanism. The carriage is slidably mounted on the second slide rail, and one side of the carriage is rotatably connected to the rotating disk. At the same time, an electrical slip ring is provided at the rotational connection between the carriage and the rotating disk. A stepped hole is provided in the center of the carriage and the center of the rotating disk, and the three-rod pneumatic mechanism is installed inside the rotating disk;

[0016] By adopting the above technical solution, when the auger or drill pipe rotates, the rotating disk rotates accordingly. At the same time, it is convenient for the external air source to continuously supply air to the air chamber through the electrical slip ring when the rotating disk rotates.

[0017] Preferably, a linear displacement sensor is fixedly installed on the outside of the carriage, and the linear displacement sensor is provided at the sliding connection between the carriage and the second slide rail. An angular displacement sensor is fixedly installed on the outside of the fork, and the angular displacement sensor is provided at the rotational connection between the fork and the support wheel;

[0018] By adopting the above technical solution, when the auger or drill pipe rotates with the sliding table, the linear displacement sensor on the carriage monitors the moving distance of the sliding table. After adding the drill pipe, when the drill pipe or auger is pushed for feeding, it drives the support wheel to rotate. At the same time, the angular displacement sensor monitors the number of rotations of the support wheel. The feeding depth of the auger is monitored by the cooperation of the linear displacement sensor and the angular displacement sensor.

[0019] Preferably, the three-rod pneumatic mechanism includes a cylinder, a piston rod, an air chamber, a fork, and a support wheel. A plurality of cylinders are provided inside the rotating disk, and an air chamber connected to the plurality of cylinders is provided inside the rotating disk. The piston rod is slidably installed inside the cylinder, and the end of the piston rod away from the cylinder is fixedly installed with a fork. At the same time, a support wheel is rotatably connected inside the fork;

[0020] By adopting the above technical solution, high-pressure air simultaneously pushes the three piston rods, making the support wheels on the three piston rods press tightly against the auger or drill pipe, which is convenient for supporting the auger or drill pipe when the auger or drill pipe rotates.

[0021] Preferably, one end of the third pneumatic motor is connected to the drill pipe or auger, and the drill pipe or auger passes through the center of the stepped hole. The three support wheels are arranged in a "pin" shape centered on the center line of the stepped hole, and one end of the support wheel is arranged to fit against the drill pipe or auger;

[0022] By adopting the above technical solution, the support wheels arranged in a "pin" shape support the drill pipe or auger, making the drill pipe or auger more stable when rotating.

[0023] Compared with the prior art, the beneficial effect of the present invention is: This pressure-relief drilling device that can detect the depth,

[0024] (1) A pressure roller and a rubber sealing strip are provided. The pressure roller pushes the rubber sealing strip to fit against the inner wall of the first groove. At the same time, the rubber sealing strip covers the outside of the power mechanism. When the power mechanism moves along the first slide rail, the power mechanism pulls the rubber sealing strip, causing the rubber sealing strip to rotate around the first groove. During this process, the rubber sealing strip is always pushed by the pressure roller to fit against the inner wall of the first groove, completely isolating the first slide rail from contact with the outside world and protecting the first slide rail from the influence of external dust.

[0025] (2) It is equipped with a rotary disk and a three-bar pneumatic mechanism. The rotary disk is rotated inside the carriage. The compressed air generated by the air compressor enters the air chamber of the three-bar pneumatic mechanism through the electric slip ring. Under the action of pressure, it pushes the piston rod, causing the support wheel on the piston rod to move towards the center of the stepped hole and finally clamp the drill rod or auger. When the drill rod or auger is driven by the second pneumatic motor, the rotary disk rotates in the carriage. During the operation of the drilling device, it plays the role of supporting the auger or drill rod, which improves the movement stability of the auger or drill rod.

[0026] (3) It is equipped with a main beam, reinforcing ribs and a base. The main beam is strengthened by the reinforcing ribs, so that the main beam is connected to the base on one side. The main beam can be rotated by the first pneumatic motor on the base. At the same time, the rotation method is not restricted by the structure and can be used to drill in the coal mine at any angle, making it more practical to use.

[0027] (4) It is equipped with a pneumatic support mechanism, an angular displacement sensor and a linear displacement sensor. When the power mechanism pushes the auger or drill rod to move, the pneumatic support mechanism moves with the power mechanism. At this time, the linear displacement sensor monitors the moving distance of the pneumatic mechanism. When the pneumatic support mechanism contacts and is fixed on the stop block, the auger or drill rod continues to be driven to penetrate deeper into the coal seam. At this time, the support wheel rotates. The angular displacement sensor monitors the rotation angle of the support wheel. Through the cooperation of the linear displacement sensor and the angular displacement sensor, it is convenient to monitor the drilling depth of the drilling device in real time. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0029] Figure 2 This is a top view of the structure of the present invention;

[0030] Figure 3 This is a side view cross-sectional structural diagram of the present invention;

[0031] Figure 4 This is a side view of the supporting mechanism of the present invention.

[0032] Figure 5 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0033] Figure 6 For the present invention Figure 3 Enlarged structural diagram at point B;

[0034] Figure 7 This is a schematic diagram of the three-dimensional structure of the rotating disk of the present invention.

[0035] In the diagram: 1. Main beam, 2. Reinforcing rib, 3. Base, 4. First pneumatic motor, 5. Air compressor, 6. First groove, 7. Guide rail protection mechanism, 71. Pressure roller, 72. Rubber sealing strip, 8. First slide rail, 9. Power mechanism, 91. Slide table, 92. Second pneumatic motor, 93. Second groove, 94. Rack, 95. Third pneumatic motor, 10. Pneumatic support mechanism, 101. Second slide rail, 102. Slide carriage, 103. Rotary disk, 104. Electric slip ring, 105. Stepped hole, 106. Three-bar pneumatic mechanism, 1061. Cylinder, 1062. Piston rod, 1063. Air chamber, 1064. Fork, 1065. Support wheel, 11. Linear displacement sensor, 12. Angular displacement sensor, 13. Stop block, 14. First magnetic switch, 15. Top column, 16. Second magnetic switch. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-7 This invention provides a technical solution: a pressure-relief drilling device capable of verifying depth, such as... Figure 1 and Figure 2 As shown, a reinforcing rib 2 is fixed on one side of the main beam 1, and the side of the reinforcing rib 2 away from the main beam 1 is rotatably connected to the base 3.

[0038] In a further embodiment, a stop block 13 is fixedly installed at the end of the main beam 1 away from the power mechanism 9, and a first magnetic switch 14 is installed inside the stop block 13. A top column 15 is installed at the end of the power mechanism 9 near the stop block 13, and a second magnetic switch 16 is installed at the end of the top column 15 near the stop block 13. A pneumatic support mechanism 10 is installed between the stop block 13 and the power mechanism 9, and one side of the pneumatic support mechanism 10 is magnetically connected to the second magnetic switch 16. When the power mechanism 9 pushes the auger drill to move, it pushes the pneumatic support mechanism 10 to move along with it through the top column 15 until the pneumatic support mechanism 10 fits against the stop block 13. At this time, the working states of the first magnetic switch 14 and the second magnetic switch 16 are switched so that the pneumatic support mechanism 10 is fixed on the stop block 13.

[0039] like Figure 1 As shown, the reinforcing rib 2 is located in the middle of the main beam 1, and the distance between the reinforcing rib 2 and the farthest end of the main beam 1 is less than the height of the base 3. The first pneumatic motor 4 drives the main beam 1 to rotate through the reinforcing rib 2, so that the main beam 1 rotates to a specified angle. At the same time, this structure has few restrictions and can rotate the main beam 1 to be perpendicular to the ground.

[0040] In a further embodiment, one end of the reinforcing rib 2 passes through the base 3 and is connected to the first pneumatic motor 4 fixedly installed on the base 3, and an air compressor 5 is fixedly installed at the bottom of the base 3.

[0041] like Figure 1 and Figure 6 As shown, a first groove 6 is provided on the outer side of the main beam 1, and a guide rail protection mechanism 7 is provided inside the first groove 6.

[0042] In a further embodiment, the guide rail protection mechanism 7 includes a pressure roller 71 and a rubber sealing strip 72. The rubber sealing strip 72 is wrapped and adhered to the surface of the first groove 6, and the rubber sealing strip 72 covers the outside of the power mechanism 9. The pressure roller 71 is rotatably mounted on the inner wall of the first groove 6, and the pressure roller 71 adheres to the surface of the rubber sealing strip 72. The pressure roller 71 pushes the rubber sealing strip 72 to adhere to the inner wall of the first groove 6. When the power mechanism 9 moves, it pulls the rubber sealing strip 72 to rotate accordingly, thereby sealing and protecting the first slide rail 8.

[0043] like Figure 2 and Figure 3 As shown, a first slide rail 8 is provided on the surface of the first groove 6, and a power mechanism 9 is installed inside the first slide rail 8.

[0044] In a further embodiment, the power mechanism 9 includes a slide 91, a second pneumatic motor 92, a second groove 93, a rack 94, and a third pneumatic motor 95. The slide 91 is slidably mounted on the first slide rail 8, and the second pneumatic motor 92 is installed inside the slide 91. The second groove 93 is provided in the middle of the first slide rail 8, and the rack 94 is fixedly installed inside the second groove 93. The second pneumatic motor 92 extends into the second groove 93 and meshes with the rack 94. The third pneumatic motor 95 is fixedly installed on the top of the slide 91. The second pneumatic motor 92 and the rack 94 cooperate to push the slide 91 to slide along the first slide rail 8, while the third pneumatic motor 95 drives the auger drill or drill rod to rotate.

[0045] like Figure 1 , Figure 4 and Figure 5As shown, one end of the third pneumatic motor 95 is connected to the drill pipe or auger, and the drill pipe or auger passes through the center of the stepped hole 105. The three support wheels 1065 are arranged in a "pin" shape centered on the center line of the stepped hole 105, and one end of the support wheels 1065 is arranged to fit the drill pipe or auger. The pneumatic support mechanism 10 is slidably mounted on the second slide rail 101, and the second slide rail 101 is fixed on the surface of the main beam 1. The three support wheels 1065 cooperate to support the auger or drill pipe, making the rotation of the auger or drill pipe more stable.

[0046] In a further embodiment, the pneumatic support mechanism 10 includes a carriage 102, a rotating disk 103, an electrical slip ring 104, a stepped hole 105 and a three-rod pneumatic mechanism 106. The carriage 102 is slidably mounted on the second slide rail 101, and one side of the carriage 102 is rotatably connected to the rotating disk 103. At the same time, an electrical slip ring 104 is provided at the rotational connection between the carriage 102 and the rotating disk 103. A stepped hole 105 that communicates with each other is provided at the centers of the carriage 102 and the rotating disk 103. A three-rod pneumatic mechanism 106 is installed inside the rotating disk 103. The auger or drill pipe is installed at the center of the stepped hole 105. When the auger or drill pipe rotates, the rotating disk 103 rotates inside the carriage 102, facilitating the continuous support of the auger or drill pipe during the rotation process.

[0047] As Figure 1 and Figure 7 As shown, a linear displacement sensor 11 is fixedly installed on the outside of the carriage 102, and the linear displacement sensor 11 is arranged at the sliding connection between the carriage 102 and the second slide rail 101. An angular displacement sensor 12 is fixedly installed on the outside of the fork 1064, and the angular displacement sensor 12 is arranged at the rotational connection between the fork 1064 and the support wheel 1065. The linear displacement sensor 11 monitors the position of the pneumatic support mechanism 10 on the second slide rail 101 in real time, and the angular displacement sensor 12 monitors the rotation angle of the support wheel 1065 in real time. The drilling depth of the drilling device is monitored in real time through the cooperation of the linear displacement sensor 11 and the angular displacement sensor 12.

[0048] In a further embodiment, the three-bar pneumatic mechanism 106 includes a cylinder 1061, a piston rod 1062, an air chamber 1063, a fork 1064, and a support wheel 1065. Multiple cylinders 1061 are provided inside the rotating disk 103, and an air chamber 1063 communicating with the multiple cylinders 1061 is provided inside the rotating disk 103. A piston rod 1062 is slidably mounted inside the cylinder 1061, and a fork 1064 is fixedly mounted at the end of the piston rod 1062 away from the cylinder 1061. Simultaneously, a support wheel 1065 is rotatably connected inside the fork 1064. The air compressor 5 delivers compressed air to the air chamber 1063 through an electric slip ring 104. The compressed air pushes the piston rod 1062 to slide within the cylinder 1061, causing the support wheel 1065 on the piston rod 1062 to move towards the center of the stepped hole 105 and ultimately clamp the auger or drill rod. The support wheel 1065 rotates accordingly as the auger or drill rod moves.

[0049] In use, the air compressor 5 is started, supplying air to the first pneumatic motor 4 and activating it. The first pneumatic motor 4 drives the reinforcing rib 2 to rotate via a worm gear reducer, causing the main beam 1 on the reinforcing rib 2 to rotate to a specified angle. The auger drill passes through the stepped hole 105 and connects to the third pneumatic motor 95. The air compressor 5 delivers compressed air into the air chamber 1063, and the compressed air pushes the piston rod 1062 to slide along the cylinder 1061 until the support on the piston rod 1062... The support wheel 1065 clamps the auger shank, and the third pneumatic motor 95 is started. The third pneumatic motor 95 drives the auger to rotate, and at the same time, the rotary disk 103 rotates within the slide 102, so that the three-bar pneumatic mechanism 106 can also provide support when the auger rotates. The second pneumatic motor 92 is started, and the second pneumatic motor 92 cooperates with the rack 94 to push the slide 91 to move along the first slide rail 8. At the same time, the third pneumatic motor 95 on the slide 91 pushes the auger to move accordingly, and the slide 91 pushes the air through the top column 15. The moving support mechanism 10 moves until it is pressed against the stop block 13. The working states of the first magnetic switch 14 and the second magnetic switch 16 are switched, so that the pneumatic support mechanism 10 is disconnected from the top column 15 and fixed on the stop block 13. The connection between the auger and the third pneumatic motor 95 is disconnected, the power mechanism 9 is reset, and the drill rod is added. Similarly, the power mechanism 9 pushes the auger to drill further through the drill rod. When the drill rod moves, it pushes the support wheel 1065 to rotate. The linear displacement sensor 11 monitors the position of the pneumatic support mechanism 10 on the second slide rail 101 in real time, and the angular displacement sensor 12 monitors the rotation angle of the support wheel 1065 in real time. The drilling depth of the drilling device is monitored in real time by the cooperation of the linear displacement sensor 11 and the angular displacement sensor 12. When the power mechanism 9 moves along the first slide rail 8, it pulls the rubber sealing strip 72 to rotate around the first groove 6. At the same time, multiple pressure rollers 71 cooperate to squeeze the rubber sealing strip 72, so that the rubber sealing strip 72 always fits against the inner wall of the first groove 6 and seals and protects the first slide rail 8.

[0050] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0051] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-relief drilling device capable of verifying depth, comprising a main beam (1), a guide rail protection mechanism (7), a power mechanism (9), a third pneumatic motor (95), a pneumatic support mechanism (10), and a fork (1064), characterized in that: A reinforcing rib (2) is fixed on one side of the main beam (1), and the side of the reinforcing rib (2) away from the main beam (1) is rotatably connected to the base (3). One end of the reinforcing rib (2) passes through the base (3) and is connected to the first pneumatic motor (4) fixedly installed on the base (3). An air compressor (5) is fixedly installed at the bottom of the base (3). A first groove (6) is provided on the outer side of the main beam (1), and a guide rail protection mechanism (7) is provided inside the first groove (6). The guide rail protection mechanism (7) includes a pressure roller (71) and a rubber sealing strip (72). A rubber sealing tape (72) is wrapped and attached to the surface of the first groove (6), and the rubber sealing tape (72) covers the outside of the power mechanism (9). The pressure roller (71) is rotatably installed on the inner wall of the first groove (6), and the pressure roller (71) is attached to the surface of the rubber sealing tape (72). A first slide rail (8) is provided on the surface of the first groove (6), and the power mechanism (9) is installed inside the first slide rail (8). The pneumatic support mechanism (10) is slidably installed on the second slide rail (101), and the second slide rail (101) is fixed on the surface of the main beam (1). The pneumatic support mechanism (10) includes a carriage (102), a rotating disk (103), an electrical slip ring (104), a stepped hole (105), and a three-bar pneumatic mechanism (106). The carriage (102) is slidably mounted on the second slide rail (101), and one side of the carriage (102) is rotatably connected to the rotating disk (103). Meanwhile, an electrical slip ring (104) is provided at the rotational connection between the carriage (102) and the rotating disk (103). A stepped hole (105) that is mutually connected is opened at the centers of the carriage (102) and the rotating disk (103). A three-bar pneumatic mechanism (106) is installed inside the rotating disk (103). A linear displacement sensor (11) is fixedly installed on the outer side of the carriage (102), and the linear displacement sensor (11) is provided at the sliding connection between the carriage (102) and the second slide rail (101). An angular displacement sensor (12) is fixedly installed on the outer side of the fork (1064), and the angular displacement sensor (12) is provided at the rotational connection between the fork (1064) and the support wheel (1065). The three-bar pneumatic mechanism (106) includes a cylinder (1061), a piston rod (1062), an air chamber (1063), a fork (1064), and a support wheel (1065). A plurality of cylinders (1061) are opened inside the rotating disk (103), and an air chamber (1063) that is connected to the plurality of cylinders (1061) is opened inside the rotating disk (103). The piston rod (1062) is slidably installed inside the cylinder (1061), and a fork (1064) is fixedly installed at one end of the piston rod (1062) away from the cylinder (1061). Meanwhile, a support wheel (1065) is rotatably connected inside the fork (1064). One end of the third pneumatic motor (95) is connected to a drill pipe or a spiral drill, and the drill pipe or the spiral drill passes through the center of the stepped hole (105). The three support wheels (1065) are arranged in a "pin" shape centered on the center line of the stepped hole (105), and one end of the support wheel (1065) is arranged to be in contact with the drill pipe or the spiral drill.

2. The pressure relief drilling device for depth verification according to claim 1, characterized in that: A stop block (13) is fixedly provided at one end of the main beam (1) away from the power mechanism (9), and a first magnetic switch (14) is installed inside the stop block (13). A top column (15) is provided at one end of the power mechanism (9) close to the stop block (13), and a second magnetic switch (16) is installed at one end of the top column (15) close to the stop block (13). The pneumatic support mechanism (10) is provided between the stop block (13) and the power mechanism (9), and one side of the pneumatic support mechanism (10) is magnetically connected to the second magnetic switch (16).

3. The pressure relief drilling device for depth verification according to claim 1, characterized in that: The reinforcing rib (2) is located in the middle of the main beam (1), and the distance between the reinforcing rib (2) and the farthest end of the main beam (1) is less than the height of the base (3).

4. The pressure relief drilling device for depth verification according to claim 1, characterized in that: The power mechanism (9) includes a slide (91), a second pneumatic motor (92), a second groove (93), a rack (94), and a third pneumatic motor (95). The slide (91) is slidably mounted on a first slide rail (8), and the second pneumatic motor (92) is installed inside the slide (91). The first slide rail (8) has a second groove (93) in the middle, and the rack (94) is fixedly installed inside the second groove (93). The second pneumatic motor (92) extends into the second groove (93) and meshes with the rack (94). The third pneumatic motor (95) is fixedly installed on the top of the slide (91).

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