Drilling machine for tunnel construction

Abstract

The invention relates to the technical field of tunnel construction equipment, and discloses a drilling machine for tunnel construction. Comprising a frame body and further comprises a hydraulic system, the hydraulic system comprises power electricity fixed to the top of the rear portion of the frame body, and a plunger pump is fixed to the output end of the power electricity; the walking system comprises an engine fixed to the bottom of the frame body, a torque converter is fixed to the output end of the engine, and a transmission shaft is fixed to the output end of the torque converter. Compared with a crawler-type drilling machine, the wheel-type drilling machine has the advantages that the waiting time of the wheel-type drilling machine can be saved by about 70%, and when tunnel drilling construction is completed, a vehicle can be quickly driven away from a tunnel by rotating a cab seat and using the rear steering gear box 5 located behind, so that the problems of difficulty in backing up and turning around in the tunnel are solved.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, specifically to a drilling machine for tunnel construction. Background Technology

[0002] The use of drilling rigs in tunnel construction is primarily based on several key reasons. Drilling rigs can precisely create holes of specified diameter and depth in rock strata, providing ideal space for subsequent blasting operations. By rationally arranging the hole positions and depths, the blasting range and degree of fragmentation can be effectively controlled, improving excavation efficiency and quality. Simultaneously, the high precision of drilling rigs reduces over-excavation and under-excavation, lowering material waste and subsequent processing costs. Moreover, compared to manual drilling, it is faster and more efficient, significantly shortening the construction cycle. Furthermore, drilling rigs can adapt to different geological conditions, operating stably in environments such as hard and soft rock, ensuring smooth construction progress.

[0003] Disadvantages of existing technology: 1. The travel speed of a tracked tunnel core drilling rig is about 3 kilometers per hour, while the travel speed of a wheeled tunnel core drilling rig can reach about 10 kilometers per hour.

[0004] 2. Currently, tunnel construction equipment travels in one direction only. After completing construction in the tunnel, it needs to reverse out of the tunnel. This results in poor visibility for the driver, significant safety hazards, and slow reversing speed. Summary of the Invention

[0005] The purpose of this invention is to provide a drilling machine for tunnel construction to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling machine for tunnel construction, comprising a frame body, and further comprising: The hydraulic system includes a power source fixed to the top rear of the vehicle frame body, and a piston pump is fixed to the output end of the power source. The walking system includes an engine fixed to the bottom of the vehicle frame, a torque converter fixed to the output end of the engine, a drive shaft fixed to the output end of the torque converter, and a hydraulic pump fixed to the output end of the drive shaft.

[0007] Preferably, a hydraulic oil tank and a fuel tank are fixed on both sides of the vehicle frame body, respectively.

[0008] Preferably, both sides of the bottom of the frame body are fixed with rear support legs, and the rear support legs are used to limit the frame body during drilling.

[0009] Preferably, front support legs are fixed on both sides of the frame body, and the front support legs are used to limit the frame body during drilling.

[0010] Preferably, a front steering gear is fixed to the top of the vehicle frame body, and a rear steering gear is fixed to the top of the vehicle frame body.

[0011] Preferably, a rotating seat is provided on the top of the frame body, which facilitates the operation of the machine by the staff.

[0012] Preferably, a liftable roof is fixed to the top of the frame body, and the liftable roof is located above the rotating seat.

[0013] Preferably, a front-to-back displacement drill frame base is fixed to one side of the vehicle frame body, and a lifting drill frame is fixed to the top of the front-to-back displacement drill frame base.

[0014] Preferably, a double-rotating structure is provided on one side of the lifting drill frame, and a drill barrel is provided on one side of the double-rotating structure.

[0015] Preferably, a steering axle is rotatably mounted on the inner wall at the rear of the vehicle frame body, and a drive axle is rotatably mounted on the inner wall at the front of the vehicle frame body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. It solves the problem of long waiting time after tracked tunnel core drilling rigs are completed. Wheeled drilling rigs can save about 70% of the waiting time compared to tracked ones.

[0017] 2. When the tunnel drilling is completed, the vehicle can be quickly driven out of the tunnel by rotating the driver's seat and using the rear steering gear-5 located at the rear, which solves the problem of difficulty in reversing and turning around in the tunnel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the drilling machine for tunnel construction provided by the present invention. Figure 2 This is a schematic diagram of the vehicle frame structure provided by the present invention; Figure 3 This is a schematic diagram of the hydraulic system structure provided by the present invention; Figure 4 This is a schematic diagram of the walking system structure provided by the present invention; Figure 5 This is a schematic diagram of the hydraulic oil tank and fuel tank structure provided by the present invention; Figure 6 This is a schematic diagram of the double-rotation structure and drill barrel structure provided by the present invention.

[0019] In the diagram: 1. Hydraulic oil tank; 2. Fuel tank; 3. Rear outrigger; 4. Front outrigger; 5. Front steering gear; 6. Rear steering gear; 7. Rotating seat; 8. Lifting roof; 9. Front and rear displacement drill frame base; 10. Lifting drill frame; 11. Double-slewing structure; 12. Drill barrel; 13. Steering axle; 14. Drive axle; 15. Hydraulic system; 151. Power supply; 152. Piston pump; 16. Walking system; 161. Engine; 162. Torque converter; 163. Drive shaft; 164. Hydraulic pump; 17. Chassis body. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-6 As shown, a drilling machine for tunnel construction includes a frame body 17 and a hydraulic system 15. The hydraulic system 15 includes a power supply 151 fixed to the top rear of the frame body 17, and a plunger pump 152 fixed to the output end of the power supply 151. The frame body 17 serves as the support frame of the entire drilling machine, bearing all other components. Its structural design is robust and durable, capable of withstanding the enormous reaction force generated during drilling operations and the weight of the entire machine. The frame body 17 is made of high-strength steel and undergoes a special heat treatment process to improve the strength and toughness of the steel, ensuring that the frame will not deform or be damaged in complex tunnel construction environments, thus providing a reliable guarantee for the stable operation of the entire machine. Power supply 151 is the power source for hydraulic system 15. It uses external 380V industrial electricity, which provides strong power support to meet the power requirements of equipment such as piston pump 152. Power supply 151 has overload protection and short circuit protection functions. When the circuit is abnormal, it can cut off the power supply in time to protect the equipment safety. Piston pump 152 is one of the core components of hydraulic system 15. It can convert the electrical energy provided by power supply 151 into hydraulic energy. Through the reciprocating motion of the piston in the pump cylinder, hydraulic oil is drawn from the low-pressure chamber, pressurized, and delivered to the high-pressure chamber, providing stable and sufficient hydraulic power to all parts of the machine. Piston pump 152 has the characteristics of high pressure, stable flow, and high efficiency, and can adapt to the working requirements of drilling machine under different working conditions.

[0022] The walking system 16 includes an engine 161 fixed to the bottom of the chassis body 17. A torque converter 162 is fixed to the output end of the engine 161, a drive shaft 163 is fixed to the output end of the torque converter 162, and a hydraulic pump 164 is fixed to the output end of the drive shaft 163. The engine 161 is the power source of the walking system 16. The engine 161 is a high-performance diesel engine with advantages such as high power, high torque, and good fuel economy. It can operate stably in the harsh tunnel construction environment and provide continuous power to the torque converter 162. The engine 161 boasts powerful output and is equipped with an advanced cooling system and air filter, effectively reducing engine temperature, preventing dust and other impurities from entering the engine, and extending engine life. The torque converter 162 is a device that automatically changes torque and speed, adjusting output torque and speed according to vehicle driving conditions to ensure smooth operation under different loads. When starting or climbing, the torque converter 162 increases output torque to provide sufficient power; when traveling at high speeds, it reduces output torque to increase speed. The torque converter 162 also features hydraulic coupling to buffer the power impact from the engine 161, reducing damage to the transmission system. The driveshaft 163 connects the torque converter 162, hydraulic pump 164, steering axle 13, and drive axle 14. Made of high-strength alloy steel, the driveshaft 163 possesses high strength and rigidity, capable of withstanding large torques and bending moments. Its internal structure employs a special design to effectively transmit power while minimizing power loss. At both ends of the driveshaft 163… Equipped with a universal joint, the drive shaft 163 can transmit power normally at different angles, making the vehicle more flexible during driving. The hydraulic pump 164 is a key component that provides steering hydraulic power to the steering axle 13. It can convert the mechanical energy transmitted by the drive shaft 163 into hydraulic energy, and drive the steering cylinder through the pressure of the hydraulic oil to achieve vehicle steering. The hydraulic pump 164 has the characteristics of stable flow and adjustable pressure, and can automatically adjust the output flow and pressure according to the vehicle's driving speed and steering angle to ensure a smooth and accurate steering process.

[0023] Hydraulic oil tank 1 and fuel tank 2 are fixed on both sides of the chassis body 17, respectively. Hydraulic oil tank 1 is used to store hydraulic oil. The hydraulic oil tank 1 has a large capacity to meet the needs of the hydraulic system 15 for long-term operation. The hydraulic oil tank 1 is equipped with a filter to filter impurities and water in the hydraulic oil, ensuring the cleanliness of the hydraulic oil and extending the service life of the hydraulic system 15. At the same time, the hydraulic oil tank 1 is also equipped with a level gauge so that the operator can observe the hydraulic oil level at any time and add hydraulic oil in time. Fuel tank 2 is used to store fuel. Fuel tank 2 adopts an explosion-proof and fireproof design to ensure safety in the tunnel construction environment. Fuel tank 2 is equipped with an oil level sensor to monitor the remaining fuel in real time and display it to the operator through the instrument panel to remind the operator to refuel in time.

[0024] The bottom of the frame body 17 is fixed with rear support legs 3 on both sides, and the rear support legs 3 are used to limit the frame body 17 during drilling; the frame body 17 is fixed with front support legs 4 on both sides, and the front support legs 4 are used to limit the frame body 17 during drilling. The rear outrigger 3 limits the movement of the frame body 17 during drilling. The rear outrigger 3 is driven by a hydraulic cylinder, and the extension and retraction of the cylinder are controlled by a multi-way valve. When the equipment is working, the operator operates the multi-way valve to extend the rear outrigger 3 and make it contact the ground, slightly lifting the vehicle and increasing the contact area between the vehicle and the ground, thereby improving the stability of the vehicle during operation. The rear outrigger 3 has a large support area and can withstand greater pressure, ensuring that the vehicle will not shake during drilling. The front outrigger 4 has the same function as the rear outrigger 3, which also limits the movement of the frame body 17 during drilling. The front outrigger 4 is also driven by a hydraulic cylinder and controlled by a multi-way valve. The front outrigger 4 and the rear outrigger 3 work together to form a stable support system, providing reliable protection for drilling operations.

[0025] A front steering gear 5 is fixed to the top of the chassis body 17, and a rear steering gear 6 is fixed to the top of the chassis body 17. The front steering gear 5 is a control device for the forward direction of the vehicle. The front steering gear 5 adopts an advanced power steering system. The operator can easily control the driving direction of the vehicle by simply turning the steering wheel. The front steering gear 5 has high steering sensitivity and accurate steering angle, which can meet the steering needs of the vehicle under different working conditions. The rear steering gear 6 works in conjunction with the front steering gear 5 to realize the two-way driving function of the vehicle. In some narrow tunnel construction environments, the vehicle needs to reverse. At this time, the operator can control the reversing direction of the vehicle by operating the rear steering gear 6, which improves the maneuverability and flexibility of the vehicle. The design of the rear steering gear 6 is the same as that of the front steering gear 5. It has a power steering function and is easy to operate.

[0026] A rotating seat 7 is installed on the top of the chassis body 17, which facilitates machine operation. A lifting canopy 8 is fixed on the top of the chassis body 17, and the lifting canopy 8 is located above the rotating seat 7. The lifting and lowering function of the canopy is controlled by a multi-way valve and hydraulic cylinder. In case of poor visibility, the height of the canopy can be adjusted so that the driver can stand and observe. The rotating seat 7 is ergonomically designed, with a shape and size that conforms to the human body curve, providing a comfortable sitting posture for the operator. The seat can rotate 360 ​​degrees, and the operator can adjust the direction of the seat according to the work needs, making it convenient to observe the work situation in all directions. The rotating seat 7 is also equipped with a seat belt to ensure the safety of the operator during vehicle operation. The lifting canopy 8 is driven by a hydraulic cylinder and controlled by a multi-way valve. During tunnel construction, due to the dim lighting and poor visibility inside the tunnel, the operator can adjust the height of the canopy to stand and observe, expanding the field of vision and improving the accuracy and safety of the work. The lifting canopy 8 is made of high-strength and corrosion-resistant materials, which can be used for a long time in harsh tunnel construction environments.

[0027] A front-to-back displacement drill frame base 9 is fixed to one side of the chassis body 17, and a lifting drill frame 10 is fixed to the top of the front-to-back displacement drill frame base 9. A double-rotation structure 11 is provided on one side of the lifting drill frame 10, and a drill cylinder 12 is provided on one side of the double-rotation structure 11. The front-to-back displacement drill frame base 9 is driven by a hydraulic cylinder, and the front-to-back movement of the drill frame is controlled by a multi-way valve. When the vehicle is moving, the operator can operate the multi-way valve to move the drill frame towards the cab side, concentrating the center of gravity in the middle of the vehicle body and improving the stability of the vehicle during movement. During operation, the drill frame can be moved outward to facilitate fine-tuning of the drill cylinder 12 and improve work efficiency. The front-to-back displacement drill frame base 9 has a large range of movement to meet the working needs under different working conditions. The lifting drill frame 10 is driven by a hydraulic cylinder, and the lifting and lowering of the drill frame is controlled by a multi-way valve. The lifting drill frame 10 can adjust its height according to the height of the tunnel so that the drill cylinder 12 can reach the appropriate drilling position. The lifting and lowering of the lifting drill frame 10... The speed is adjustable, allowing operators to select the appropriate lifting speed according to work needs. The lifting drill frame 10 has a reasonable structural design and high strength, capable of withstanding the huge reaction force generated during drilling. The double-rotation structure 11 consists of two mutually perpendicular rotation devices, enabling the drill barrel 12 to rotate in both horizontal and vertical directions. Through the adjustment of the double-rotation structure 11, the drill barrel 12 can adapt to drilling requirements at different angles, improving the flexibility and accuracy of drilling. The double-rotation structure 11 adopts a high-precision gear transmission system, ensuring high transmission accuracy and smooth rotation, thus guaranteeing the quality of drilling. The drill barrel 12 is made of high-strength alloy steel, featuring high hardness and good wear resistance. The drill barrel 12 is equipped with spiral blades inside, which can discharge the rock cuttings generated during drilling, improving drilling efficiency. The diameter and length of the drill barrel 12 can be changed according to different drilling requirements to meet the needs of tunnel drilling operations of different specifications.

[0028] A steering axle 13 rotates on the inner wall at the rear of the chassis body 17, and a drive axle 14 rotates on the inner wall at the front of the chassis body 17. The steering axle 13 is connected to the drive shaft 163. The steering axle 13 is one of the key components for vehicle steering. It can convert the hydraulic power provided by the hydraulic pump 164 into steering force, allowing the vehicle to be steered according to the operator's intention. The steering axle 13 adopts advanced steering technology, providing flexible and accurate steering to meet the steering needs of the vehicle under different working conditions. The drive axle 14 is also connected to the drive shaft 163. The drive axle 14 is the power transmission component for vehicle movement. It can transmit the power from the engine 161 through the torque converter 162 and the drive shaft 163 to the wheels, driving the vehicle. The drive axle 14 is equipped with a differential, which can automatically adjust the speed of the left and right wheels when the vehicle is turning, ensuring smooth turning. The working principle of the drilling rig used in tunnel construction is as follows: The walking process; First, the running system 16 starts operating. The engine 161 begins running, serving as the power source and outputting powerful output to the torque converter 162. The torque converter 162 plays a crucial role, precisely distributing power to the steering axle 13 and drive axle 14 via the drive shaft 163. After receiving power, the drive axle 14 automatically adjusts the speed of the left and right wheels according to the vehicle's driving conditions, driving the entire vehicle smoothly. The steering axle 13 receives steering hydraulic power from the hydraulic pump 164 when the vehicle is turning, ensuring that the vehicle can flexibly change direction according to the driver's intention. On the other hand, the torque converter 162 drives the hydraulic pump 164 to work, converting mechanical energy into hydraulic energy to provide the steering axle 13 with the hydraulic power required for steering, ensuring a smooth and stable steering process.

[0029] Hydraulic power supply process; The hydraulic system 15 is connected to an external 380V power supply 151, which transmits electrical energy to the piston pump 152, causing the piston pump 152 to start working. The piston pump 152 draws hydraulic oil from the low-pressure chamber through the reciprocating motion of the piston, pressurizes it, and delivers it to the high-pressure chamber, providing sufficient hydraulic power to all parts of the machine to meet the needs of different working stages, such as the extension and retraction of the rear outrigger 3 and the front outrigger 4, the raising and lowering of the lifting canopy 8, the movement of the front and rear displacement drill frame base 9, the raising and lowering of the lifting drill frame 10, and the rotation of the double rotary structure 11.

[0030] Drilling preparation process; When the equipment is ready to drill, the operator controls the hydraulic cylinders of the rear outrigger 3 and front outrigger 4 to extend via a multi-way valve, allowing the outriggers to contact the ground and slightly lift the vehicle, increasing the contact area between the vehicle and the ground and effectively improving the stability of the vehicle during operation. Next, the operator continues to control the hydraulic cylinders of the front and rear displacement drill frame base 9 via the multi-way valve, moving the drill frame to the appropriate position. While the vehicle is moving, the drill frame is moved towards the cab side, concentrating the center of gravity in the middle of the vehicle body to improve stability; during operation, it is moved outwards to facilitate fine-tuning of the drill barrel 12. Then, the hydraulic cylinders of the lifting drill frame 10 are controlled to adjust its height according to the tunnel height, allowing the drill barrel 12 to reach the appropriate drilling position. Finally, the angle of the drill barrel 12 is adjusted by operating the double-rotation structure 11 to adapt to different drilling angle requirements, completing the drilling alignment.

[0031] Drilling operation process; After alignment, the drill barrel 12 is started for drilling. Driven by power, the drill barrel 12 rotates at high speed and advances towards the tunnel wall, while the internal spiral blades expel drilling debris from the hole. During drilling, the operator can fine-tune the angle of the drill barrel 12 using the double-rotating structure 11 to ensure accuracy and quality.

[0032] Working face conversion process; After drilling through the entire working face, the operator rotates the seat 7 to face backward, and then uses the rear steering gear 6 located at the rear to control the engineering vehicle to move to the next working face to continue tunnel drilling operations. Throughout the entire operation, the hydraulic oil tank 1 provides clean hydraulic oil to the hydraulic system 15, and the fuel tank 2 provides sufficient fuel to the engine 161, ensuring that the entire machine can operate continuously and stably.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling machine for tunnel construction, comprising a frame body (17), characterized in that, Also includes: The hydraulic system (15) includes a power supply (151) fixed to the top rear of the frame body (17), and a plunger pump (152) is fixed to the output end of the power supply (151). The walking system (16) includes an engine (161) fixed to the bottom of the frame body (17), a torque converter (162) fixed to the output end of the engine (161), a drive shaft (163) fixed to the output end of the torque converter (162), and a hydraulic pump (164) fixed to the output end of the drive shaft (163).

2. The drilling machine for tunnel construction according to claim 1, characterized in that: The two sides of the frame body (17) are respectively fixed with a hydraulic oil tank (1) and a fuel tank (2).

3. The drilling machine for tunnel construction according to claim 1, characterized in that: The bottom of the frame body (17) is fixed with rear support legs (3) on both sides, and the rear support legs (3) are used to limit the frame body (17) during drilling.

4. A drilling machine for tunnel construction according to claim 1, characterized in that: Both sides of the frame body (17) are fixed with front support legs (4), and the front support legs (4) are used to limit the frame body (17) during drilling.

5. A drilling machine for tunnel construction according to claim 1, characterized in that: A front steering mechanism (5) is fixed to the top of the frame body (17), and a rear steering mechanism (6) is fixed to the top of the frame body (17).

6. A drilling machine for tunnel construction according to claim 1, characterized in that: The top of the frame body (17) is provided with a rotating seat (7), which facilitates the operation of the machine by the staff.

7. A drilling machine for tunnel construction according to claim 1, characterized in that: The top of the frame body (17) is fixed with a lifting canopy (8), and the lifting canopy (8) is located above the rotating seat (7).

8. A drilling machine for tunnel construction according to claim 7, characterized in that: A front-to-back displacement drill frame base (9) is fixed on one side of the frame body (17), and a lifting drill frame (10) is fixed on the top of the front-to-back displacement drill frame base (9).

9. A drilling machine for tunnel construction according to claim 8, characterized in that: A double-rotating structure (11) is provided on one side of the lifting drill frame (10), and a drill barrel (12) is provided on one side of the double-rotating structure (11).

10. A drilling machine for tunnel construction according to claim 1, characterized in that: The inner wall behind the frame body (17) has a steering axle (13) that rotates, and the inner wall in front of the frame body (17) has a drive axle (14) that rotates.

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