A rear water closet device for a drift drill and an operating method thereof

Abstract

The application discloses a rear water adding device for a drift drill and an operation method, which comprises a rubber tube water closet, a conveying device, an upper rod manipulator and a drill, the rubber tube water closet is deformed to cover the drill rod after being pressed by the rubber tube, so that the water closet is connected with the drill rod and is sealed, the water closet sliding sleeve can move along the middle beam of the slide frame of the conveying device, the slide frame of the conveying device can move along the inner guide rail of the support under the drive of the slide frame oil cylinder, the rubber tube water closet and the drill rotary device are synchronously moved through a plurality of displacement sensors, the upper rod manipulator can realize the overturning of the drill rod and the adjustment of the parallelism between the drill rod and the drilling angle of the drill. The rear water adding and removing of the water closet can be automatically completed, the water closet connecting thread is removed, the drill rod is covered by the rubber tube under pressure, the precision requirement is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mine tunnel drilling equipment, and relates to a rear water supply device for tunnel drilling rigs and its operation method. Background Technology

[0002] Currently, automated underground tunnel drilling rigs in coal mines can automatically complete drilling operations. To avoid repeated loading and unloading of water, a middle-mounted rod is typically used. During construction, the water is always connected to the active drill rod of the power head. Due to the machine's travel, the drill rod is generally around 1 meter long. Compared to the conventional 3-meter directional drilling rod, this method requires two more threaded connections for the same drilling depth, resulting in higher rigidity and lower curvature, which is unfavorable for directional drilling. The existing rear-mounted rod method is structurally complex and, due to the significant extension distance beyond the machine body, faces difficulties in water connection due to gravity deflection. Furthermore, the rear-mounted rod is not long enough to address the issue of excessive local rigidity in the drill rod. It also requires an independent upper-lower coupling structure, making the structure complex and heavy. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a rear-mounted water supply device and its operation method for tunnel drilling rigs. The water supply device requires a male thread that mates with the female thread of the drill rod to complete the connection with the drill rod. Automated operation demands high coaxial precision and requires subsequent threading of the drill rod and water supply device, necessitating a separate rotary and feed device design, resulting in a complex structure. To address these issues, this solution can complete the connection between the water supply device and the drill rod with lower precision, and uses a rotary mechanism for threading and unthreading, simplifying the structure.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A rear-mounted water supply device for a tunnel drilling rig includes a rubber-filled water supply tube, a conveying device, a rod-mounting robot, and the drilling rig.

[0006] The rubber tube water-filled device includes a rubber tube, a support tube, an inner tube, and an outer tube, all coaxially arranged from the inside out, as well as a water-filled body. The front and rear ends of the rubber tube are fixed to the front and rear ends of the inner tube by annular front and rear inner end caps, respectively. The water-filled body is coaxially installed at the rear inner end cap. A sealing ring is provided in the annular gap between the inner tube and the outer tube at the front and rear ends, and the sealing ring is positioned by being squeezed by the annular front and rear outer end caps at the front and rear ends of the outer tube. The outer tube has an oil port on its side wall, and the inner tube and the support tube both have through holes on their side walls. Under the action of external high-pressure oil, the rubber tube can deform to wrap around the internal drill rod.

[0007] The conveying device includes a support, a slide, a water-filled sliding sleeve, a slide cylinder, and displacement sensors mounted on the water-filled sliding sleeve and the slide cylinder. The support is located above and behind the drilling rig, and the slide is located at the rear end of the support and can move back and forth along the inner guide rail of the support under the drive of the slide cylinder. A slide beam parallel to the support guide rail is provided in the middle of the slide, and the water-filled sliding sleeve can move back and forth along the slide beam. The lower end of the water-filled sliding sleeve is connected to the rubber tube water-filled material.

[0008] The upper rod manipulator includes a mounting base, a first rotary cylinder, a manipulator arm, a second rotary cylinder, a drill rod platform, and a drill rod gripper. The first and second rotary cylinders contain encoders. The mounting base is installed on one side of the rear of the drilling rig. One end of the manipulator arm is mounted on the mounting base via the first rotary cylinder to achieve drill rod rotation, and the other end is connected to one end of the second rotary cylinder to adjust the drill rod's parallel angle with the drilling rig's drilling angle. The other end of the second rotary cylinder is connected to the drill rod platform, which is equipped with the drill rod gripper.

[0009] The drilling rig includes a rotary head, a clamp, and a body; the rotary head can clamp the drill rod and move back and forth along the body, and the clamp is located in front of the rotary head.

[0010] The present invention also includes the following technical features:

[0011] Specifically, the water-filled body is coaxially mounted to the rear end of the inner end cover by bolts, and a seal is achieved by rotating the sealing ring.

[0012] Specifically, the outer wall of the inner cylinder is provided with two annular bosses, and two sealing rings are respectively located between one annular boss and the front outer end cap and between the other annular boss and the rear outer end cap; the oil port is located between the two annular bosses, and multiple through holes are evenly distributed on the side wall of the inner cylinder and are all located between the two annular bosses.

[0013] Specifically, the inner cylinder is sealed to the front and rear ends of the rubber tube, and there is an annular gap in the middle between the inner cylinder and the rubber tube; the support cylinder is sleeved on the outer wall of the middle part of the rubber tube; and multiple through holes are evenly distributed on the side wall of the support cylinder.

[0014] Specifically, the displacement sensors on the water tank sleeve and the slide cylinder can record the movement distance of the water tank sleeve and the slide, respectively.

[0015] Specifically, the slide frame is equipped with a rack, and a motor is installed on the side of the water tank sleeve and meshes with the rack of the slide frame through a gear. Under the drive of the motor, the water tank sleeve drives the rubber tube water tank to move.

[0016] Specifically, there are two drill pipe grippers installed at both ends of the drill pipe platform.

[0017] Specifically, a pulley is installed on the rear side of the rotary device, and a rotating shaft is provided on one side. A spring is connected between the pulley mounting plate and the pulley pin. When the pulley is subjected to a forward force, it can rotate unidirectionally around the rotating shaft and can be reset by the spring.

[0018] A method for operating a rear-mounted water supply device for a tunnel drilling rig, the method for achieving drilling based on the aforementioned rear-mounted water supply device for a tunnel drilling rig, includes the following steps:

[0019] Step a1: After the first drill rod is drilled, the clamp holds the drill rod, the rotary releases the drill rod, the rubber sleeve opens the control ball valve, the hydraulic oil is depressurized, and the rubber sleeve separates from the drill rod.

[0020] Step a2: The water sleeve motor reverses, causing the rubber tube water to move backward along the slide. At the same time, the slide cylinder retracts, causing the slide to move backward. At this time, the rubber tube water reaches the rear limit position.

[0021] Step a3: Place the second drill rod onto the upper rod manipulator platform, and the drill rod clamp closes to hold the drill rod.

[0022] Step a4: Adjust the drill rod angle using the first and second rotary cylinders to place the drill rod in a coaxial position with the rotary head;

[0023] Step a5: The water sleeve motor rotates forward, driving the rubber sleeve water sleeve to move forward and wrapping the end of the second drill rod into the first waiting position. Operate the ball valve to introduce high-pressure oil into the rubber sleeve water sleeve. The rubber sleeve clamps the drill rod and releases the drill rod clamp. The upper rod manipulator moves to the initial position.

[0024] Step a6: The rotary head is released and moves backward to the second waiting position, clamping the second drill rod and starting to engage. The rotary head drives the drill rod, which in turn drives the rubber sleeve water pump. At the same time, the water pump sliding sleeve motor rotates forward, and the slide cylinder extends. The displacement sensor completes the synchronous forward movement of the rubber sleeve water pump and the rotary head to the front limit position, which is the stop position of the second drill rod.

[0025] Step a7: Repeat the above actions to continue the work.

[0026] A method for operating a rear-mounted water supply device for a tunnel drilling rig, the method for lifting the drill bit based on the aforementioned rear-mounted water supply device for a tunnel drilling rig, includes the following steps:

[0027] Step b1: After drilling is completed, the rotary head clamps the drill rod and moves backward to the second waiting position. At this time, the water in the rubber sleeve completes the same displacement of the rotary head through the displacement sensor.

[0028] Step b2: The rotary clamp reverses to uncoupling and releases the drill rod, and the water in the rubber sleeve then moves the drill rod to the first waiting position;

[0029] Step b3: The upper robotic arm moves to the concentric position of the rotary head, clamps the drill rod, and the rubber tube moves backward to the rear limit position;

[0030] Step b4: The upper robotic arm clamps the drill rod and moves it to the initial position of the robotic arm, then removes the drill rod;

[0031] Step b5: The rotary head moves forward to the stop drilling position, clamps the second to last drill rod, and the rubber sleeve moves forward to the front limit position, clamping the second drill rod;

[0032] Step b6: Repeat the above actions to complete the drill lifting.

[0033] Compared with the prior art, the present invention has the following technical effects:

[0034] This invention achieves connection and sealing between the water tube and the drill rod by deforming the rubber sleeve under pressure to enclose the drill rod. A pulley is installed on the rear side of the rotary device, and a rotating shaft is provided on one side. When the pulley is subjected to a forward force, it can rotate unidirectionally around the rotating shaft and can be reset by a spring. The bracket is equipped with a guide rail, and the slide can move along the guide rail within the bracket under the drive of the slide cylinder. The water tube sleeve can move along the middle beam of the slide. A motor is installed on the side of the sleeve, and the motor drives the water tube to move through the meshing of the gear and the rack of the middle beam of the slide. The water tube conveying device achieves synchronous movement of the rubber sleeve water tube and the rotary device through the setting of multiple displacement sensors. One end of the upper rod manipulator is mounted on the mounting base through the first rotating cylinder to realize the flipping of the drill rod, and the other end is connected to the second rotating cylinder to realize the adjustment of the drill rod to be parallel with the drilling angle of the drilling machine.

[0035] This invention can automatically complete the rear-end loading and unloading of water pipes, remove the water pipe connection threads, and use a rubber sleeve to pressurize and cover the drill rod, thereby reducing precision requirements and improving work efficiency.

[0036] The drill rod platform of this invention has a telescopic structure, which can adjust the length of the drill rod platform according to the sag deflection of the rubber tube at the rear limit position, and use the sag deflection of the drill rod to compensate for the sag deflection of the water tube.

[0037] All the devices of this invention shall not exceed the size of the drilling rig vehicle during transportation. Attached Figure Description

[0038] Figure 1 A schematic diagram of the rear water supply device for tunnel drilling rigs.

[0039] Figure 2 This is a schematic diagram of a rubber tube toilet structure.

[0040] Figure 3 This is a schematic diagram of the conveying device.

[0041] Figure 4 This is a schematic diagram of the upper lever manipulator structure.

[0042] Figure 5 This is a schematic diagram of the drilling rig structure.

[0043] Figure 6 This is a schematic diagram of a pulley structure.

[0044] Figure 7 This is a schematic diagram of the drilling process.

[0045] The meanings of the labels in the diagram are as follows:

[0046] 1. Rubber tube water tank; 2. Conveying device; 3. Rod-mounting robot; 4. Drilling rig; 101. Outer cylinder; 102. Front outer end cover; 103. Front inner end cover; 104. Inner cylinder; 105. Rubber tube; 106. Support cylinder; 107. Rear outer end cover; 108. Rear inner end cover; 109. Water tank body; 110. Sealing ring; 201. Bracket; 202. Slide; 203. Water tank sliding sleeve; 204. Slide cylinder; 301. Mounting base; 302. First rotating cylinder; 303. Robotic arm; 304. Second rotating cylinder; 305. Drill rod platform; 306. Drill rod gripper; 401. Rotor; 402. Clamp; 403. Machine body; 40101. Pulley; 40102. Rotating shaft; 40103. Spring. Detailed Implementation

[0047] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0048] Example 1:

[0049] like Figures 1 to 6 As shown, this embodiment provides a rear water supply device for a tunnel drilling rig, including a rubber tube water supply 1, a conveying device 2, a rod-mounting robot 3, and a drilling rig 4.

[0050] The rubber tube water toilet 1 includes a rubber tube 105, a support tube 106, an inner tube 104, and an outer tube 101, and a water toilet body 109, which are coaxially arranged from the inside to the outside. The front and rear ends of the rubber tube 105 are fixed to the front and rear ends of the inner tube 104 by annular front inner end caps 103 and rear inner end caps 108, respectively. The water toilet body 109 is coaxially installed at the rear inner end cap 108. A sealing ring 110 is provided in the annular gap between the inner tube 104 and the outer tube 101 at the front and rear ends. The sealing ring 110 is squeezed and positioned by annular front outer end caps 102 and rear outer end caps 107 at the front and rear ends of the outer tube 101. The side wall of the outer tube 101 is provided with an oil port. The side walls of the inner tube 104 and the support tube 106 are provided with through holes. Under the action of external high-pressure oil, the rubber tube 105 can deform and wrap around the internal drill rod.

[0051] The conveying device 2 includes a support 201, a slide 202, a water slide sleeve 203, a slide cylinder 204, and displacement sensors installed on the water slide sleeve 203 and the slide cylinder 204. The support 201 is located above and behind the drilling rig 4. The slide 202 is located at the rear end of the support 201 and can move back and forth along the inner guide rail of the support 201 under the drive of the slide cylinder 204. The middle part of the slide 202 is provided with a middle beam parallel to the guide rail of the support 201. The water slide sleeve 203 can move back and forth along the middle beam of the slide 202. The lower end of the water slide sleeve 203 is connected to the rubber tube water 1.

[0052] The upper rod manipulator 3 includes a mounting base 301, a first rotary cylinder 302, a manipulator arm 303, a second rotary cylinder 304, a drill rod platform 305, and a drill rod gripper 306. The first rotary cylinder 302 and the second rotary cylinder 304 contain encoders. The mounting base 301 is installed on one side of the rear body 403 of the drilling rig 4. One end of the manipulator arm 303 is mounted on the mounting base 301 via the first rotary cylinder 302 to achieve the rotation of the drill rod, and the other end is connected to one end of the second rotary cylinder 304 to adjust the drill rod to be parallel to the drilling angle of the drilling rig 4. The second rotary cylinder 304 can rotate the drill rod platform 305 to be between the rubber tube water tank 1 and the rotary head 401. The other end of the second rotary cylinder 304 is connected to the drill rod platform 305, and the drill rod platform 305 is equipped with a drill rod gripper 306. The length of the drill rod platform 305 is determined according to the sag deflection of the rubber tube water tank 1 at the rear limit position, and the sag deflection of the drill rod is used to compensate for the sag deflection of the water tank.

[0053] The drilling rig 4 includes a rotary head 401, a clamp 402, and a body 403; the rotary head 401 can clamp the drill rod and move back and forth along the body 403, and the clamp 402 is located in front of the rotary head 401.

[0054] The water-filled body 109 is coaxially mounted to the rear end of the inner end cover 108 by bolts, and is sealed by rotating the sealing ring 110.

[0055] The outer wall of the inner cylinder 104 is provided with two annular bosses. Two sealing rings 110 are respectively located between one annular boss and the front outer end cover 102 and between the other annular boss and the rear outer end cover 107. The oil port is located between the two annular bosses. Multiple through holes are evenly distributed on the side wall of the inner cylinder 104 and are all located between the two annular bosses.

[0056] The inner cylinder 104 and the rubber tube 105 are sealed at both ends, and there is an annular gap in the middle between the inner cylinder 104 and the rubber tube 105; the support cylinder 106 is sleeved on the outer wall of the middle part of the rubber tube 105; multiple through holes are evenly distributed on the side wall of the support cylinder 106.

[0057] The displacement sensors on the water sleeve 203 and the carriage cylinder 204 can record the moving distance of the water sleeve 1 and the carriage 202, respectively.

[0058] A rack is provided on the middle beam of the slide 202, and a motor is installed on the side of the water toilet sleeve 203 and meshes with the rack of the middle beam of the slide 202 through a gear. Under the drive of the motor, the water toilet sleeve 203 drives the rubber tube water toilet 1 to move.

[0059] There are two drill pipe clamps 306, which are installed at both ends of the drill pipe platform 305.

[0060] A pulley 40101 is installed on the rear side of the rotary device 401, and a rotating shaft 40102 is provided on one side. A spring 40103 is connected between the mounting plate of the pulley 40101 and the pin of the pulley 40101. When the pulley 40101 is subjected to a forward force, it can rotate unidirectionally around the rotating shaft 40102 and can be reset by the spring 40103.

[0061] In other embodiments, the rubber sleeve can take various shapes, including but not limited to ring, cone, sphere, etc.; all of which can achieve the effect of this embodiment.

[0062] In other embodiments, the water conveying device may employ various designs that increase stroke, such as multi-stage cylinders, cylinders with connecting rods, or multi-stage fork structures.

[0063] Example 2:

[0064] This embodiment provides an operation method for a rear-mounted water supply device for a tunnel drilling rig. This method is based on the rear-mounted water supply device for a tunnel drilling rig in Embodiment 1 to achieve drilling. Figure 7 As shown, it includes the following steps:

[0065] Step a1: After the first drill rod is drilled, the clamp holds the drill rod, the rotary releases the drill rod, the rubber sleeve opens the control ball valve, the hydraulic oil is depressurized, and the rubber sleeve separates from the drill rod.

[0066] Step a2: The water sleeve motor reverses, causing the rubber tube water to move backward along the slide. At the same time, the slide cylinder retracts, causing the slide to move backward. At this time, the rubber tube water reaches the rear limit position.

[0067] Step a3: Place the second drill rod onto the upper rod manipulator platform, and the drill rod clamp closes to hold the drill rod.

[0068] Step a4: Adjust the drill rod angle using the first and second rotary cylinders to place the drill rod in a coaxial position with the rotary head;

[0069] Step a5: The water sleeve motor rotates forward, driving the rubber sleeve water sleeve to move forward and wrapping the end of the second drill rod into the first waiting position. Operate the ball valve to introduce high-pressure oil into the rubber sleeve water sleeve. The rubber sleeve clamps the drill rod and releases the drill rod clamp. The upper rod manipulator moves to the initial position.

[0070] Step a6: The rotary head is released and moves backward to the second waiting position, clamping the second drill rod and starting to engage. The rotary head drives the drill rod, which in turn drives the rubber sleeve water pump. At the same time, the water pump sliding sleeve motor rotates forward, and the slide cylinder extends. The displacement sensor completes the synchronous forward movement of the rubber sleeve water pump and the rotary head to the front limit position, which is the stop position of the second drill rod.

[0071] Step a7: Repeat the above actions to continue the work.

[0072] Example 3:

[0073] This embodiment provides an operation method for a rear-mounted water supply device for a tunnel drilling rig. This method, based on the rear-mounted water supply device for a tunnel drilling rig in Embodiment 1, enables drill bit lifting and includes the following steps:

[0074] Step b1: After drilling is completed, the rotary head clamps the drill rod and moves backward to the second waiting position. At this time, the water in the rubber sleeve completes the same displacement of the rotary head through the displacement sensor.

[0075] Step b2: The rotary clamp reverses to uncoupling and releases the drill rod, and the water in the rubber sleeve then moves the drill rod to the first waiting position;

[0076] Step b3: The upper robotic arm moves to the concentric position of the rotary head, clamps the drill rod, and the rubber tube moves backward to the rear limit position;

[0077] Step b4: The upper robotic arm clamps the drill rod and moves it to the initial position of the robotic arm, then removes the drill rod;

[0078] Step b5: The rotary head moves forward to the stop drilling position, clamps the second to last drill rod, and the rubber sleeve moves forward to the front limit position, clamping the second drill rod;

[0079] Step b6: Repeat the above actions to complete the drill lifting.

Claims

1. A rear-mounted water supply device for a tunnel drilling rig, characterized in that, It includes a rubber tube water pump (1), a conveying device (2), a rod-mounting robot (3), and a drilling rig (4); The rubber tube toilet (1) includes a rubber tube (105), a support tube (106), an inner tube (104), and an outer tube (101) coaxially arranged from the inside to the outside, as well as a toilet body (109); the front and rear ends of the rubber tube (105) are fixed to the front and rear ends of the inner tube (104) by annular front inner end caps (103) and rear inner end caps (108), respectively, and the toilet body (109) is coaxially installed at the rear inner end cap (108); the inner tube (104) A sealing ring (110) is provided in the annular gap between the outer cylinder (101) and the inner cylinder (101), and the sealing ring (110) is squeezed and positioned by the front outer end cap (102) and the rear outer end cap (107) at the front and rear ends of the outer cylinder (101); the side wall of the outer cylinder (101) is provided with an oil port, and the side walls of the inner cylinder (104) and the support cylinder (106) are provided with through holes. Under the action of external high pressure oil, the rubber sleeve (105) can deform and wrap around the internal drill rod; The conveying device (2) includes a support (201), a slide (202), a water slide sleeve (203), a slide cylinder (204), and displacement sensors installed on the water slide sleeve (203) and the slide cylinder (204); the support (201) is located above the rear of the drilling rig (4), the slide (202) is located at the rear end of the support (201) and can move back and forth along the inner guide rail of the support (201) under the drive of the slide cylinder (204); the middle part of the slide (202) is provided with a slide (202) beam parallel to the guide rail of the support (201), the water slide sleeve (203) can move back and forth along the slide (202) beam, and the lower end of the water slide sleeve (203) is connected to the rubber tube water (1); The upper rod manipulator (3) includes a mounting base (301), a first rotary cylinder (302), a manipulator (303), a second rotary cylinder (304), a drill rod platform (305), and a drill rod gripper (306); the first rotary cylinder (302) and the second rotary cylinder (304) contain encoders; the mounting base (301) is installed on one side of the rear body (403) of the drilling rig (4); one end of the manipulator (303) is mounted on the mounting base (301) through the first rotary cylinder (302) to realize the rotation of the drill rod, and the other end is connected to one end of the second rotary cylinder (304) to adjust the drill rod to be parallel to the drilling angle of the drilling rig (4); the other end of the second rotary cylinder (304) is connected to the drill rod platform (305), and the drill rod platform (305) is provided with the drill rod gripper (306); The drilling rig (4) includes a rotary head (401), a clamp (402), and a body (403); the rotary head (401) can clamp the drill rod and move back and forth along the body (403), and the clamp (402) is located in front of the rotary head (401).

2. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, The water body (109) is coaxially mounted to the rear end of the inner end cover (108) by bolts, and is sealed by rotating the sealing ring (110).

3. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, The outer wall of the inner cylinder (104) is provided with two annular bosses, and two sealing rings (110) are respectively located between one annular boss and the front outer end cap (102) and between the other annular boss and the rear outer end cap (107); the oil port is located between the two annular bosses, and multiple through holes on the side wall of the inner cylinder (104) are evenly distributed and located between the two annular bosses.

4. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, The inner cylinder (104) and the rubber cylinder (105) are sealed and connected at both ends, and there is an annular gap in the middle between the inner cylinder (104) and the rubber cylinder (105); the support cylinder (106) is sleeved on the outer wall of the middle part of the rubber cylinder (105); multiple through holes are evenly distributed on the side wall of the support cylinder (106).

5. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, The displacement sensors on the water-filled sliding sleeve (203) and the slide cylinder (204) can record the moving distance of the water-filled tubing (1) and the slide (202), respectively.

6. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, The slide (202) has a rack on the middle beam, and a motor is installed on the side of the water tube slide (203) and meshes with the rack of the middle beam of the slide (202) through gears. Under the drive of the motor, the water tube slide (203) drives the rubber tube water tube (1) to move.

7. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, There are two drill pipe grippers (306) installed at both ends of the drill pipe platform (305).

8. The rear water supply device for tunnel drilling rigs as described in claim 1, characterized in that, The rotary device (401) is equipped with a pulley (40101) on the rear side and a rotating shaft (40102) on one side. A spring (40103) is connected between the mounting plate of the pulley (40101) and the pin of the pulley (40101). When the pulley (40101) is subjected to a forward force, it can rotate unidirectionally around the rotating shaft (40102) and can be reset by the spring (40103).

9. A method for operating a rear-mounted water supply device for a tunnel drilling rig, characterized in that, This method, based on the rear water supply device for the tunnel drilling rig as described in any one of claims 1 to 8, enables drilling and includes the following steps: Step a1: After the first drill rod is drilled, the clamp holds the drill rod, the rotary releases the drill rod, the rubber sleeve opens the control ball valve, the hydraulic oil is depressurized, and the rubber sleeve separates from the drill rod. Step a2: The water sleeve motor reverses, causing the rubber tube water to move backward along the slide. At the same time, the slide cylinder retracts, causing the slide to move backward. At this time, the rubber tube water reaches the rear limit position. Step a3: Place the second drill rod onto the upper rod manipulator platform, and the drill rod clamp closes to hold the drill rod. Step a4: Adjust the drill rod angle using the first and second rotary cylinders to place the drill rod in a coaxial position with the rotary head; Step a5: The water sleeve motor rotates forward, driving the rubber sleeve water sleeve to move forward and wrapping the end of the second drill rod into the first waiting position. Operate the ball valve to introduce high-pressure oil into the rubber sleeve water sleeve. The rubber sleeve clamps the drill rod and releases the drill rod clamp. The upper rod manipulator moves to the initial position. Step a6: The rotary head is released and moves backward to the second waiting position, clamping the second drill rod and starting to engage. The rotary head drives the drill rod, which in turn drives the rubber sleeve water pump. At the same time, the water pump sliding sleeve motor rotates forward, and the slide cylinder extends. The displacement sensor completes the synchronous forward movement of the rubber sleeve water pump and the rotary head to the front limit position, which is the stop position of the second drill rod. Step a7: Repeat the above actions to continue the work.

10. A method for operating a rear-mounted water supply device for a tunnel drilling rig, characterized in that, This method, based on the rear water supply device for the tunnel drilling rig as described in any one of claims 1 to 8, enables drill bit lifting and includes the following steps: Step b1: After drilling is completed, the rotary head clamps the drill rod and moves backward to the second waiting position. At this time, the water in the rubber sleeve completes the same displacement of the rotary head through the displacement sensor. Step b2: The rotary clamp reverses to uncoupling and releases the drill rod, and the water in the rubber sleeve then moves the drill rod to the first waiting position; Step b3: The upper robotic arm moves to the concentric position of the rotary head, clamps the drill rod, and the rubber tube moves backward to the rear limit position; Step b4: The upper robotic arm clamps the drill rod and moves it to the initial position of the robotic arm, then removes the drill rod; Step b5: The rotary head moves forward to the stop drilling position, clamps the second to last drill rod, and the rubber sleeve moves forward to the front limit position, clamping the second drill rod; Step b6: Repeat the above actions to complete the drill lifting.

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