Tunnel rescue drilling machine

Abstract

The application provides a tunnel rescue drilling machine, which comprises a rack, a casing device and a casing driving device arranged on the rack, the casing device comprises an inner casing and an outer casing which are coaxially sleeved, a cutting ring cutter head is rotationally connected to the outer casing and connected with the inner casing, a rotary driving mechanism of the casing driving device is connected with the inner casing for driving the rotation of the cutting ring cutter head, and a retreat stopping device is arranged on the rack. The cutting ring cutter head is arranged on the non-rotating outer casing, the rotation of the cutting ring cutter head is driven by the inner casing, and the retreat stopping device is added, so that the problem of insufficient force of the drilling machine after offsetting the drilling process in the prior art is solved; the cutting ring cutter head is selectively rotated according to different conditions, so that the abnormal body in the collapse body can be conveniently coped with and the complex geological conditions can be handled; and the whole machine has a compact structure and is suitable for small space rescue scenes.

Description

Technical Field

[0001] This invention relates to the field of tunnel rescue technology, and in particular to a tunnel rescue drilling rig. Background Technology

[0002] With the large-scale construction of railways, highways, water conservancy, and municipal projects, the number of long and large-diameter tunnels is increasing. To prevent tunnel collapses that could lead to "shutdowns" and ensure the safety of construction workers, safe, efficient, and scientific tunnel emergency rescue equipment is particularly necessary and important. Currently, the main rescue methods for tunnel collapses include the vertical shaft method, open-cut method, small pilot tunnel rescue method, pipe jacking method, and large-diameter drilling rig rescue method. Among these, the large-diameter drilling rig rescue method is a relatively advanced mechanical rescue method both domestically and internationally. This method utilizes the drilling rig's unique drill bit connecting casing to penetrate the collapsed tunnel body. After the drill bit is extracted, the casing itself forms an escape channel through which trapped personnel can evacuate.

[0003] In recent years, research has emerged on rescue equipment. For example, Chinese invention patent CN108999568A, published on December 14, 2018, discloses a tunnel rescue drilling rig, including a support casing and a slag discharge auger. The slag discharge auger is located inside the support casing, and its central axis coincides with that of the support casing. A slag discharge gap is left between the slag discharge auger and the support casing, and the slag discharge auger has an axial passageway for trapped personnel to pass through. However, it suffers from problems such as large size and difficulty in dealing with abnormal objects in a collapsed structure.

[0004] Another Chinese invention patent, published on November 12, 2019, with publication number CN110439609A, discloses a rescue shield tunneling system, which includes: a shield tunneling machine, a drive unit for driving the shield tunneling machine, a crane, a hydraulic station for providing power to the shield tunneling machine and the crane, a base for mounting the shield tunneling machine, the crane, and the hydraulic station, tracks mounted on the base for driving the base's movement, and a belt conveyor mounted below the base for transporting sand, gravel, and soil. However, the outer casing of this system does not rotate, and the jacking force required for the equipment is large, making it difficult to counteract the reaction force on its own.

[0005] Therefore, given the various problems mentioned above, it is necessary to design a highly integrated and efficient tunnel rescue equipment. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention proposes a tunnel rescue drilling rig. Addressing the challenges of navigating complex structures within collapsed bodies and insufficient drilling thrust in existing rescue drilling rigs, this invention solves the problem of insufficient thrust during drilling by using an inner casing to drive the cutting ring cutterhead at the front end of the outer casing and by adding a backstop device. This highly integrated tunnel rescue drilling rig, once it reaches the designated location, can quickly deploy for rescue operations, open rescue channels, and rescue trapped personnel.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A tunnel rescue drilling rig includes a frame, a casing assembly mounted on the frame, and a casing drive mechanism. The casing assembly includes an inner casing and an outer casing coaxially fitted together. A cutting ring cutterhead is rotatably connected to the outer casing and is connected to the inner casing. The rotation drive mechanism of the casing drive mechanism is connected to the inner casing to drive the rotation of the cutting ring cutterhead. A backstop device is provided on the frame. This invention solves the problem of insufficient backstop force during drilling in existing technologies by setting a cutting ring cutterhead on a non-rotating outer casing, driving the rotation of the cutting ring cutterhead through the inner casing, and adding a backstop device. Furthermore, the cutting ring cutterhead rotates selectively according to different situations, facilitating the handling of abnormal bodies in collapsed structures and complex geological conditions. The overall structure is compact, making it suitable for rescue scenarios in confined spaces.

[0009] Furthermore, in order to facilitate the connection between the inner sleeve and the cutting ring cutter disc for driving the rotation of the cutting ring cutter disc under the driving action of the rotary drive mechanism, the inner sleeve is connected to the cutting ring cutter disc through a shear pin.

[0010] Furthermore, in order to facilitate the output of excavated soil and drive the central cutterhead to rotate and excavate the soil, a spiral drill rod is also included inside the inner sleeve. The front end of the spiral drill rod is connected to the central cutterhead, and the rear end is connected to the spiral drill rod drive device.

[0011] Furthermore, in order to enable the casing drive device and the auger drill rod drive device to move back and forth along the axial direction on the frame, the frame is provided with a jacking cylinder, which is connected to the casing drive device and the auger drill rod drive device to drive the axial movement of the casing drive device and the auger drill rod drive device.

[0012] Furthermore, in order to utilize the space within the casing device as a rescue passage after a collapse, the frame is equipped with a extraction mechanism for retrieving the auger drill rod.

[0013] Furthermore, in order to facilitate the adjustment of the drilling posture during the drilling process, the front end of the frame is provided with a roller bracket and an adjustment frame for supporting the casing device. The roller bracket and the adjustment frame are used together to adjust the posture of the casing device.

[0014] Furthermore, in order to facilitate the adjustment of the casing device's posture during drilling, the adjustment frame includes a frame body disposed on the outside of the casing device, a lower support for limiting and supporting the casing device is movably mounted on the frame body, a displacement driving mechanism for driving the lower support to move up, down, left, and right, and a retractable clamping mechanism for clamping the casing device; the frame body is also provided with a retractable upper support roller.

[0015] Furthermore, in order to better adjust the attitude of the casing device during the drilling process, the roller support includes a main support that is movably connected to the front end of the frame, and a base and a lifting roller are respectively connected to the main support through a lifting mechanism.

[0016] Furthermore, to facilitate the assembly and disassembly of the casing device, the frame is equipped with a casing transport device or a folding boom crane for transporting the casing device. The casing transport device includes a transport beam that is lifted and mounted on the frame, a clamping mechanism that is movably mounted on the transport beam, a lifting mechanism that cooperates with the clamping mechanism, and a support platform that cooperates with the lifting mechanism for alternately supporting the casing device.

[0017] Furthermore, in order to increase the backing force during the drilling process, the anti-reverse device includes a ground support assembly hinged to the rear end of the frame, and a tensioning cylinder is hinged between the ground support assembly and the frame.

[0018] The beneficial effects of this invention are:

[0019] 1. The tunnel rescue drilling rig of the present invention solves the problem of insufficient backing force in the prior art by driving the cutting ring cutter disc on the outer casing to rotate through the inner casing and by adding a backstop device;

[0020] 2. This invention addresses complex geological conditions in collapsed bodies by allowing the cutting ring disc to rotate selectively according to different situations, thus facilitating the handling of complex geological conditions;

[0021] 3. The anti-reverse device of the present invention relies on the hydraulic cylinder and crossbeam to provide the backward force generated during the drilling process of the equipment. After a certain degree, pile driving can be used to increase the resistance of the main unit to retreat, depending on the needs of the site.

[0022] 4. The roller bracket of the present invention has three degrees of freedom of movement, and can be moved and positioned forward and backward, up and down, and left and right;

[0023] 5. The idler roller bracket of the present invention is integrated with the frame, which facilitates transportation;

[0024] 6. The adjusting frame of the present invention is used in conjunction with the idler roller bracket to precisely adjust the position of the sleeve;

[0025] 7. The idler roller bracket of the present invention has a simple structure and, in conjunction with the rear adjustment frame, adjusts the posture and prevents the equipment from tipping over;

[0026] 8. The modular design of the whole machine in this invention results in a compact structure, making it suitable for rescue scenarios in confined spaces;

[0027] 9. The highly integrated tunnel rescue drilling rig of the present invention can quickly carry out rescue work, open up rescue channels, and rescue trapped personnel after reaching the designated location by walking on tracks. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a top view structural diagram of the present invention;

[0031] Figure 3 This is a schematic diagram of the cutter head and sleeve device of the present invention;

[0032] Figure 4 This is a schematic diagram of the adjustment frame of the present invention;

[0033] Figure 5 This is a schematic diagram of the forward structure for transporting the casing device of the present invention.

[0034] In the diagram: 1. Cutterhead; 1-1. Cutting ring cutterhead; 1-2. Central cutterhead; 2. Sleeve assembly; 2-1. Outer sleeve; 2-2. Inner sleeve; 2-3. Inner sleeve spiral drill rod; 2-4. Shearing pin; 2-5. Turntable bearing; 3. Roller bracket; 3-1. Load-bearing screw; 3-2. Main support; 3-3. Upper and lower support cylinders; 3-4. Lifting roller; 3-5. Front and rear telescopic cylinders; 4. Adjusting frame; 4-1. Clamping cylinder; 4-2. Upper roller; 4-3. Vertical screw; 4-4. Lower support; 4-5. Horizontal screw. 4-6. Support cylinder; 5. Casing transport device; 5-1. Lifting mechanism; 5-2. Transport beam; 5-3. Clamping mechanism; 5-4. Lifting mechanism; 5-5. Support platform; 6. Frame; 7. Jacking cylinder; 7-1. Casing jacking cylinder; 7-2. Spiral drill rod jacking cylinder; 8. Track; 9. Casing drive device; 10. Slag transport system; 11. Spiral drill rod drive device; 12. Winch; 13. Anti-reverse device; 13-1. Support plate; 13-2. Tensioning cylinder; 13-3. Crossbeam; 13-4. Steel pile. Detailed Implementation

[0035] 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.

[0036] like Figure 1 As shown in Embodiment 1 of the present invention, a tunnel rescue drilling rig includes a frame 6. Tracks 8 are provided on both sides of the frame 6, serving as a walking mechanism to drive the tunnel rescue drilling rig forward and backward, transporting the entire rig to a designated location. The frame 6 is equipped with a cutterhead 1, a casing device 2, and a casing drive device 9. The casing device 2 includes an inner casing 2-2 and an outer casing 2-1 coaxially fitted together, i.e., the outer casing 2-1 is fitted outside the inner casing 2-2, and the inner casing 2-2 and outer casing 2-1 are coaxially arranged. The casing drive device 9 is connected to the inner casing 2-2 and the outer casing 2-1 respectively by bolts, and is used to drive the outer casing 2-1 and the inner casing 2-2 to move synchronously forward and backward with the casing drive device 9. However, the rotation drive mechanism of the casing drive device 9 is only connected to the inner casing 2-2 to drive the inner casing 2-2 to rotate, while the outer casing 2-1 does not rotate, which reduces friction during drilling. The cutter head 1 includes a cutting ring cutter head 1-1, and the cutting ring cutter head 1-1 is rotatably connected to the front end of the outer sleeve 2-1. In this embodiment, as... Figure 3 As shown, the front end of the outer sleeve 2-1 is connected to the cutting ring cutter disc 1-1 via a turntable bearing 2-5. Furthermore, the cutting ring cutter disc 1-1 is connected to the inner sleeve 2-2. In this embodiment, as... Figure 3 As shown, the front end of the inner casing 2-2 is connected to the cutting ring cutter head 1-1 via multiple circumferentially arranged shear pins 2-4. During drilling, depending on the situation, the inner casing 2-2 is driven to rotate by the rotation drive mechanism of the casing drive device 9, thereby driving the rotation of the cutting ring cutter head 1-1, which facilitates the handling of abnormal bodies in the collapsed body and the processing of complex geological conditions. The frame 6 is also equipped with a backstop device 13 to prevent the main unit from retracting, solving the problem of insufficient backstop force during the drilling process in the prior art. In this embodiment, the backstop device 13 is located at the rear end of the frame 6. In other embodiments, the backstop device 13 can also be located at the front end of the frame 6.

[0037] Furthermore, such as Figure 1 and Figure 3As shown, the inner casing 2-2 contains multiple sections of spiral drill rods 2-3 connected in sequence, and these sections are detachably connected. The cutterhead 1 also includes a central cutterhead 1-2. The front end of the foremost spiral drill rod 2-3 is connected to the central cutterhead 1-2, and the rear end of the last spiral drill rod 2-3 is connected to a spiral drill rod drive device 11. The spiral drill rod drive device 11 is mounted on the frame 6 and is used to drive the rotation of the spiral drill rod 2-3, thereby causing the central cutterhead 1-2 at its front end to rotate and excavate the excavated soil. During the drilling process of the central cutterhead 1-2, the excavated soil moves backward under the rotation of the spiral drill rods 2-3, causing the soil to flow out of the last section of the casing device 2. Furthermore, as... Figure 1 As shown, the frame 6 is also equipped with a soil transport system 10. The starting section of the soil transport system 10 is located below the last section of the casing device 2. In this embodiment, the soil transport system 10 adopts a belt conveyor. The soil flowing out of the last section of the casing device 2 falls onto the soil transport system 10 and is then transported by the soil transport system 10 to the rear of the equipment.

[0038] Furthermore, the relative positions of the cutting ring cutter head 1-1 and the central cutter head 1-2, for example, whether they are arranged one in front of the other or on the same plane in the longitudinal direction, can be determined according to the geological conditions.

[0039] Furthermore, the interfaces connecting the two types of cutter heads, the cutting ring cutter head 1-1 and the center cutter head 1-2, to other components are standardized, allowing the cutting ring cutter head 1-1 and / or the center cutter head 1-2 to be equipped with cutting tools such as cutters, roller cutters, and cutting teeth according to different geological conditions of the collapsed body.

[0040] Example 2 differs from Example 1 in that, as Figure 1 and Figure 2 As shown, the frame 6 is equipped with a jacking cylinder 7, which includes a spiral drill rod jacking cylinder 7-2. The fixed end of the spiral drill rod jacking cylinder 7-2 is connected to the frame 6, and the telescopic end of the spiral drill rod jacking cylinder 7-2 is connected to the spiral drill rod drive device 11 by bolts. The spiral drill rod jacking cylinder 7-2 is used to drive the axial movement of the spiral drill rod drive device 11, causing the spiral drill rod drive device 11 to move forward on the slide rail of the frame 6, thus pushing the spiral drill rod forward. In other embodiments, the spiral drill rod jacking cylinder 7-2 is used for the back-and-forth movement of the spiral drill rod drive device 11, and can also be used to realize the sequential removal of each section of the spiral drill rod. After the spiral drill rod is removed, the space inside the inner sleeve forms a rescue channel, which can be used to rescue trapped personnel.

[0041] Example 3 differs from Example 1 in that, as Figure 1As shown, the frame 6 is equipped with a extraction mechanism for retrieving the auger drill rods 2-3. In this embodiment, the extraction mechanism uses a winch 12, which is located behind the auger drill rod drive device 11. The winch 12 can quickly extract each section of the auger drill rod sequentially. After the auger drill rods are removed, the space inside the inner casing forms a rescue channel, which can be used to rescue trapped personnel.

[0042] Example 4 differs from Example 2 in that, as Figure 1 and Figure 2 As shown, the jacking cylinder 7 also includes a sleeve jacking cylinder 7-1, which is connected to the sleeve drive device 9 by bolts. The extension and retraction of the sleeve jacking cylinder 7-1 causes the sleeve drive device 9 to move back and forth along the slide rail of the frame 6, thereby pushing the sleeve device 2 forward. The jacking force on the cutting ring cutter disc 1-1 is obtained by the extension and retraction of the sleeve jacking cylinder 7-1, which transmits the force sequentially to the sleeve drive device 9, the outer sleeve 2-1, and the turntable bearing 2-5.

[0043] Furthermore, the casing jacking cylinder 7-1 and the auger drill pipe jacking cylinder 7-2 can be controlled separately.

[0044] Example 5 differs from Example 1 in that, as Figure 1 and Figure 2 As shown, the front end of the frame 6 is provided with a roller bracket 3 and an adjustment frame 4 for supporting the casing device 2. The roller bracket 3 and the adjustment frame 4 work together to not only support the casing device 2, but also adjust the attitude of the casing device 2, thereby adjusting the drilling attitude.

[0045] Example 6 differs from Example 5 in that, as Figure 4As shown, the adjustment frame 4 includes a frame body disposed on the outer periphery of the casing device 2, with a certain gap between the frame body and the casing device 2. A lower support 4-4 is movably disposed on the lower inner side of the frame body for limiting and supporting the casing device 2. The lower support 4-4 includes a support beam and lower rollers disposed on the support beam. The lower rollers are located on both sides of the lower part of the outer casing 2-1 and contact the outer casing 2-1. The frame body is provided with a displacement driving mechanism for driving the lower support 4-4 to move up, down, left, and right, and a retractable clamping mechanism for clamping the casing device 2. The displacement driving mechanism drives the lower support 4-4 to move up, down, left, and right to adjust the displacement of the casing device 2, so that the centerline of the outer casing 2-1 coincides with the centerline of the casing driving device 9 and the auger drill rod driving device 11. Specifically, the displacement drive mechanism includes a support cylinder 4-6 for driving the lower support 4-4 to move up and down. The support cylinder 4-6 is located below the lower support 4-4. The fixed end of the support cylinder 4-6 is connected to the frame 6, and the telescopic end of the support cylinder 4-6 contacts the support beam, without obstructing the left and right movement of the lower support 4-4. The displacement drive mechanism also includes a horizontal lead screw 4-5 for driving the lower support 4-4 to move left and right. The horizontal lead screw 4-5 is located at both ends of the support beam. Each side of the frame has an internally threaded sleeve that is threadedly engaged with the horizontal lead screw 4-5. The horizontal lead screw 4-5 passes through the internally threaded sleeve and is threadedly connected to it. The other end of the horizontal lead screw 4-5 is slidably connected to the end of the support beam, without obstructing the up and down movement of the lower support 4-4. Tightening the horizontal lead screw 4-5 causes one end of the horizontal lead screw 4-5 to extend and the other end to retract, thus causing the lower support 4-4 to move left and right. The support beam has a longitudinal groove at its end, and the horizontal lead screw 4-5 has a slider at its end that can slide up and down in the groove.

[0046] Furthermore, such as Figure 4 As shown, the clamping mechanism includes clamping cylinders 4-1 on both sides of the frame. The fixed end of the clamping cylinder 4-1 is connected to the frame. The telescopic end of the clamping cylinder 4-1 faces the sleeve device 2 and is provided with clamping blocks that fit against the outside of the outer sleeve 2-1 to clamp the outer sleeve 2-1 and prevent the outer sleeve 2-1 from retracting.

[0047] Furthermore, such as Figure 4As shown, a retractable upper support roller 4-2 is also provided on the upper side of the frame. The upper support roller 4-2 is located on the upper side of the sleeve device 2 and is used to limit the upward displacement of the outer sleeve 2-1. The upper side of the upper support roller 4-2 is connected to the frame via a vertical screw 4-3 or a telescopic cylinder. When using the vertical screw 4-3, the upper side of the frame is provided with an internal threaded sleeve that is threaded with the vertical screw 4-3. The vertical screw 4-3 passes through the internal threaded sleeve and is threadedly connected to the internal threaded sleeve. First, the left and right positions of the center of the outer sleeve 2-1 are adjusted by rotating the horizontal screw 4-5. Then, the up and down positions of the center of the outer sleeve 2-1 are adjusted by the support cylinder 4-6. Finally, the vertical screw 4-3 is rotated to make the support roller 4-2 contact the outer sleeve 2-1, thus limiting the upward displacement of the outer sleeve 2-1.

[0048] Example 7 differs from Example 5 in that, as Figure 1 As shown, the roller support 3 includes a main support 3-2 movably connected to the front end of the frame 6. A base and a lifting roller 3-4 are connected to the main support 3-2 via a lifting mechanism. Specifically, the main support 3-2 is connected to the frame 6 via front and rear telescopic cylinders 3-5. The upper side of the main support 3-2 is connected to the lifting roller 3-4 via upper and lower support cylinders 3-3, and the lifting roller 3-4 is used to support the casing device 2. The lower side of the main support 3-2 is connected to the base via at least two load-bearing screws 3-1 or telescopic cylinders. The upper end of the load-bearing screw 3-1 is threaded to the main support 3-2, and the lower end of the load-bearing screw 3-1 has a screw base, which is the aforementioned base. Before the equipment starts, the upper and lower support cylinders 3-3 extend, slightly raising the lifting roller 3-4 to reduce the risk of head-down during drilling. When the equipment reaches the designated position, the front and rear telescopic cylinders 3-5 extend, the main support 3-2 moves forward, the rotating load-bearing screw 3-1 makes the screw base contact the ground, and the upper and lower support cylinders 3-3 extend and contact the outer sleeve 2-1.

[0049] Example 8 differs from Example 1 in that, as Figure 1 and Figure 5 As shown, the frame 6 is provided with a casing transport device 5 for transporting the casing device 2. The casing transport device 5 includes a transport beam 5-2 that is lifted and mounted on the frame 6, a clamping mechanism 5-3 that is movably mounted on the transport beam 5-2, a lifting mechanism 5-4 that cooperates with the clamping mechanism 5-3, and a support platform 5-5 that cooperates with the lifting mechanism 5-4 for alternately supporting the casing device 2.

[0050] Specifically, such as Figure 5As shown, a lifting mechanism 5-1 is provided on the frame 6 to drive the lifting and lowering of the transport beam 5-2 on the frame 6. The clamping mechanism 5-3 includes a pair of horizontally symmetrically arranged clamping blocks, with clamping telescopic hydraulic cylinders connected to the outer sides of the clamping blocks respectively. In this embodiment, clamping traveling wheels are connected to the lower side of the clamping telescopic hydraulic cylinders, and a traveling drive mechanism is provided on the support to drive the clamping traveling wheels to move back and forth on the transport beam 5-2, thereby driving the clamping mechanism 5-3 to move back and forth on the transport beam 5-2. In this embodiment, the clamping mechanism 5-3 is connected to the transport beam 5-2 through the clamping traveling wheels, and the clamping traveling wheels are connected to a traveling drive mechanism to drive the rotation of the clamping traveling wheels, so that the clamping mechanism 5-3 can move back and forth on the transport beam 5-2 along the tunneling direction.

[0051] Furthermore, such as Figure 5 As shown, the lifting mechanism 5-4 includes a lifting telescopic cylinder fixedly mounted on the frame 6, and the telescopic end of the lifting telescopic cylinder is provided with a lifting pad. The lifting mechanism 5-1 lowers the casing onto the lifting pad, and then the lifting mechanism 5-4 continues to lower the casing. The lifting mechanism 5-4 is located at the center of the rescue drilling rig frame 6, ensuring that the casing device 2 is lowered into place and its axis is aligned, facilitating the connection between casings.

[0052] Furthermore, such as Figure 5 As shown, the support platform 5-5 includes support columns symmetrically arranged on the frame 6, and the upper ends of the support columns are all inclined to one side of the axis. The upper end of the support column is provided with a support block for supporting the sleeve.

[0053] In use, the clamping mechanism 5-3 moves along the transport beam 5-2 to the rear to clamp the casing device 2. The cylinder of the lifting mechanism 5-1 extends, lifting the casing device 2 to ensure that the bottom height of the casing device 2 exceeds the top of the casing drive device 9 and the auger drill rod drive device 11. The casing device 2 is then transported along the transport beam 5-2 to a suitable position in front. The cylinder of the lifting mechanism 5-1 retracts, and the cylinder of the lifting mechanism 5-4 extends and contacts the casing device 2. The cylinder of the clamping mechanism 5-3 retracts, and the casing device 2 falls completely onto the lifting pad of the lifting mechanism 5-4. The cylinder of the lifting mechanism 5-4 retracts, and the casing device 2 falls onto the support block of the support platform 5-5.

[0054] Example 9 differs from Example 1 in that the frame 6 is equipped with a folding boom crane for transporting the sleeve device 2, and the sleeve is transported and installed by the folding boom crane.

[0055] Example 10 differs from Example 1 in that the inner casing 2-2 is omitted, and the rotary drive mechanism of the casing drive device is connected to the outer casing to drive the rotary drilling of the outer casing 2-1.

[0056] Example 11 differs from Example 1 in that, as Figure 1As shown, the anti-reverse device 13 includes a ground support assembly hinged to the rear end of the frame 6, and a tensioning cylinder 13-2 is hinged between the ground support assembly and the frame 6. When the geological conditions are good, the ground support assembly only uses the support plate 13-1, and the two ends of the tensioning cylinder 13-2 are hinged to the support plate 13-1 and the frame 6, respectively. In use, after the entire equipment reaches the designated position, the tensioning cylinder 13-2 extends and presses the support plate 13-1 to the ground, and the tensioning cylinder 13-2 and the support plate 13-1 provide the backward force generated during the drilling process.

[0057] Furthermore, the anti-reverse device 13 can be equipped with a crossbeam according to the geological conditions. In another embodiment, to increase the backing force, a crossbeam can be added. The ground support assembly includes a support plate 13-1 and a crossbeam 13-3. The crossbeam 13-3 is horizontally arranged, and the support plate 13-1 is inclined. The lower end of the support plate 13-1 is connected to the crossbeam 13-3, and the upper end is hinged to the frame 6. The two ends of the tensioning cylinder 13-2 are respectively hinged to the crossbeam 13-3 and the frame 6. The support plate 13-1 and the crossbeam 13-3 are welded together or connected by bolts. The crossbeam 13-3 is also reserved with pile holes. The number of piles is selected according to the geological conditions. When the jacking force exceeds a certain level, steel piles 13-4 are driven into the pile holes to increase the backing force generated during the drilling process.

[0058] During the tunnel rescue drilling process of this invention, the outer casing 2-1 remains stationary. The casing jacking cylinder 7-1 transmits force to the cutting ring cutterhead 1-1 via the casing drive device 9 and the outer casing 2-1. When an abnormal body is encountered at the tunnel face, the casing drive device 9 drives the inner casing 2-2 to rotate, which in turn drives the cutting ring cutterhead 1-1 to rotate via the positioning shear pin 2-4. The central cutterhead 1-2 is propelled forward by the auger drill rod jacking cylinder 7-2 through the auger drill rod 2-3, and the auger drill rod 2-3 is driven to rotate by the auger drill rod drive device 11, which in turn drives the central cutterhead 1-2 to rotate.

[0059] The roller bracket 3 and adjusting frame 4 of this invention are used in conjunction to support the casing device 2. The center line of the supporting casing of the adjusting frame 4 coincides with the center line of the casing drive device 9 and the auger drill rod drive device 11. At the start, the lifting roller 3-4 is slightly raised to reduce the risk of head-down during drilling. The roller bracket 3 is connected to the frame. After the equipment is in place, the front and rear telescopic cylinders 3-5 extend, the main support 3-2 moves forward, the load-bearing screw 3-1 is rotated to make the screw base contact the ground, and the upper and lower support cylinders 3-3 extend to contact the outer casing 2-1. The clamping cylinder 4-1 of the adjusting frame 4 clamps the outer casing 2-1 to prevent the outer casing 2-1 from moving backward. First, the horizontal screw 4-5 is rotated to adjust the left and right position of the center of the outer casing 2-1, then the support cylinder 4-6 is used to adjust the vertical position of the center of the outer casing 2-1, and finally the vertical screw 4-3 is rotated to make the upper roller 4-2 contact the outer casing 2-1, limiting the upward displacement of the outer casing 2-1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 tunnel rescue drilling rig, comprising a frame (6), a casing device (2) mounted on the frame (6), and a casing drive device (9), characterized in that: The casing device (2) includes an inner casing (2-2) and an outer casing (2-1) coaxially sleeved; a cutting ring cutter disc (1-1) is rotatably connected to the outer casing (2-1), and the cutting ring cutter disc (1-1) is connected to the inner casing (2-2). The rotation drive mechanism of the casing drive device (9) is connected to the inner casing (2-2) to drive the rotation of the cutting ring cutter disc (1-1); a backstop device (13) is provided on the frame (6); and a spiral drill rod (2-3) is provided in the inner casing (2-2). The front end of the spiral drill rod (2-3) is connected to the central cutter disc (1-2), and the rear end is connected to the spiral drill rod drive device (11).

2. The tunnel rescue drilling rig according to claim 1, characterized in that: The inner sleeve (2-2) is connected to the cutting ring cutter disc (1-1) via a shear pin (2-4).

3. The tunnel rescue drilling rig according to claim 1 or 2, characterized in that: The frame (6) is equipped with a jacking cylinder (7), which is connected to the casing drive device (9) and the auger drill rod drive device (11) to drive the axial movement of the casing drive device (9) and the auger drill rod drive device (11).

4. The tunnel rescue drilling rig according to claim 3, characterized in that: The frame (6) is provided with a extraction mechanism for extracting the auger rod (2-3).

5. The tunnel rescue drilling rig according to claim 1, 2, or 4, characterized in that: The front end of the frame (6) is provided with a roller bracket (3) and an adjustment frame (4) for supporting the sleeve device (2). The roller bracket (3) and the adjustment frame (4) are used to adjust the posture of the sleeve device (2).

6. The tunnel rescue drilling rig according to claim 5, characterized in that: The adjustment frame (4) includes a frame body set outside the sleeve device (2), a lower support (4-4) for limiting and supporting the sleeve device (2) is movably provided on the frame body, a displacement driving mechanism for driving the lower support (4-4) to move up, down, left and right and a retractable clamping mechanism for clamping the sleeve device (2) are provided on the frame body, and a retractable upper roller (4-2) is also provided on the frame body.

7. The tunnel rescue drilling rig according to claim 5, characterized in that: The roller support (3) includes a main support (3-2) movably connected to the front end of the frame (6), and a base and a lifting roller (3-4) are respectively connected to the main support (3-2) through a lifting mechanism.

8. The tunnel rescue drilling rig according to claim 1, 2, 4, 6, or 7, characterized in that: The frame (6) is provided with a casing transport device (5) or a folding arm crane for transporting the casing device (2). The casing transport device (5) includes a transport beam (5-2) that is lifted and installed on the frame (6) and a clamping mechanism (5-3) that is movably installed on the transport beam (5-2). The frame (6) is provided with a lifting mechanism (5-4) that cooperates with the clamping mechanism (5-3) and a support platform (5-5) that cooperates with the lifting mechanism (5-4) for alternately supporting the casing device (2).

9. The tunnel rescue drilling rig according to claim 1, 2, 4, 6, or 7, characterized in that: The anti-reverse device (13) includes a ground support assembly hinged to the rear end of the frame (6), and a tensioning cylinder (13-2) is hinged between the ground support assembly and the frame (6).

Images