A tunnel drilling equipment for drill and blast construction

Abstract

The application belongs to the technical field of tunnel drilling and particularly relates to a tunnel drilling equipment for drill and blast method construction, which comprises a connecting body for being connected with a vehicle body, a fixed end of a rotating assembly connected with one end of the connecting body, an inclined drilling assembly connected with a movable end of the rotating assembly, and a counterweight balancing assembly connected with the other end of the connecting body. The inclined drilling assembly comprises a telescopic part, a fixed end of which is connected with the movable end of the rotating assembly; a lifting part, a fixed end of which is connected with the movable end of the telescopic part, and a movable end of the lifting part is arranged perpendicularly to the movable end of the telescopic part; a drill rod, a middle part of which is slidably arranged at the movable end of the lifting part; a hammering part arranged in the movable end of the lifting part and in transmission connection with the drill rod; and a driving part, a fixed end of which is fixedly connected with the movable end of the telescopic part, and an output shaft of the driving part is in transmission connection with the drill rod through a universal connecting part. The device can realize edge drilling of a working face by making the drill rod close to the edge of the working face away from the telescopic part through the lifting part.

Description

Technical Field

[0001] This invention belongs to the field of tunnel drilling technology, and particularly relates to a tunnel drilling device for drilling and blasting construction. Background Technology

[0002] Drill and blast method is a commonly used tunnel excavation method that uses drilling, charging, and blasting to quickly clear the rock walls inside the tunnel.

[0003] Traditional drill-and-blast construction mainly relies on manual drilling, which results in low drilling efficiency and seriously affects the progress of the project.

[0004] Existing drilling methods mainly involve using a trolley to transport drilling equipment to drill holes in the rock face. However, when drilling at the edge of the tunnel face, the drilling position often cannot be close to the edge of the tunnel face due to the size of the drilling trolley. In this case, manual drilling is still required, or the drilling trolley can be used for inclined drilling. Manual drilling delays production efficiency, while inclined drilling is prone to exceeding the blasting range. Therefore, there is an urgent need for a tunnel drilling equipment for drilling and blasting construction to solve this problem. Summary of the Invention

[0005] The purpose of this invention is to provide a tunnel drilling device for drilling and blasting construction to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] A tunnel drilling device for drill-and-blast construction includes:

[0008] A connector for connecting to a vehicle body; one end of the connector is connected to the fixed end of a rotating component, the movable end of the rotating component is connected to an inclined drilling component, and the other end of the connector is connected to a counterweight balancing component.

[0009] The inclined drilling assembly includes:

[0010] The telescopic part has its fixed end connected to the movable end of the rotating assembly;

[0011] The lifting part has a fixed end connected to the movable end of the telescopic part, and the moving direction of the movable end of the lifting part is perpendicular to the moving direction of the movable end of the telescopic part.

[0012] The drill rod is slidably disposed in the middle at the movable end of the lifting part; a hammering part is provided in the movable end of the lifting part, and the hammering part is connected to the drill rod in a driving manner;

[0013] The drive unit has its fixed end fixedly connected to the movable end of the telescopic unit, and the output shaft of the drive unit is connected to the drill rod via a universal joint.

[0014] Optionally, the universal joint includes:

[0015] One end of the universal joint is hinged to the drill rod;

[0016] The telescopic rod is hinged at one end to the other end of the universal joint.

[0017] Universal joint two, one end of which is hinged to the other end of the telescopic rod, and the other end of universal joint two is hinged to the output shaft of the drive unit.

[0018] Optionally, the drive unit includes:

[0019] Motor 2, with its fixed end connected to the movable end of the telescopic part, and its output shaft hinged to the universal joint 2.

[0020] Optionally, the lifting unit includes:

[0021] The lifting rod has a fixed end that is fixedly connected to the movable end of the telescopic part. The movable end of the lifting rod is fixedly connected to a guide shell, and the hammering part is disposed inside the guide shell.

[0022] Optionally, the hammering part includes:

[0023] The impact ring is axially connected to the outside of the drill pipe;

[0024] An impact block assembly is sleeved on the outside of the drill pipe. The impact block assembly is drivenly connected to the drill pipe, the impact block assembly is drivenly connected to the impact ring, and the impact block assembly is drivenly connected to the guide shell.

[0025] A piston is disposed between the impact ring and the impact block assembly, and the impact block assembly collides with the impact ring via the piston.

[0026] An elastic portion is disposed between the guide shell and the impact ring.

[0027] Optionally, the elastic part includes a spring, which is coaxially sleeved on the outside of the drill pipe, with one end of the spring abutting against the inner wall of the guide shell and the other end of the spring abutting against the impact ring.

[0028] Optionally, the impact block assembly includes:

[0029] An impact block is coaxially sleeved on the outside of the drill rod. The drill rod has symmetrically arranged limiting grooves. The inner side of the impact block is vertically slidably engaged with the limiting grooves via a sliding post. The impact block is radially limited by the sliding post and the limiting groove. The impact block rotates together with the drill rod through the engagement of the sliding post and the limiting groove. The outer side of the impact block has several V-shaped grooves that are connected end to end. A slider is slidably connected in the V-shaped groove, and the slider is fixed to the inner wall of the guide shell.

[0030] The impact block is connected to the piston drive.

[0031] Optionally, the telescopic part includes:

[0032] The slide rail is fixed at one end to the movable end of the rotating assembly;

[0033] A sliding platform is slidably mounted on the slide rail, and the sliding platform is fixedly connected to the fixed end of the telescopic rod and the fixed end of the lifting rod;

[0034] The hydraulic rod has its fixed end fixedly connected to the movable end of the rotating assembly, and the movable end of the hydraulic rod is fixedly connected to the slide table.

[0035] Optionally, the counterweight balancing assembly includes:

[0036] The counterweight housing is fixedly connected at one end to the connecting body;

[0037] Motor 3 is embedded in the connecting body;

[0038] A threaded rod is rotatably disposed inside the counterweight housing, and the threaded rod is shaft-connected to the output shaft of the motor.

[0039] The counterweight is threadedly engaged with the threaded rod. The counterweight is vertically slidably disposed within the counterweight housing. The counterweight has a groove, and a protrusion is fixedly connected inside the counterweight housing. The counterweight and the counterweight housing are radially limited by the groove and the protrusion.

[0040] Optionally, the rotating assembly includes:

[0041] The turntable is rotatably connected to the connecting body;

[0042] One end of the connector is axially connected to a sleeve, and the turntable is rotatably disposed inside the sleeve.

[0043] Motor 1, with its fixed end embedded in the connecting body, and its movable end connected to the turntable shaft;

[0044] Two hinge supports are fixed to one side of the connector, and the hinge supports are used to connect to the lifting arm on the mobile vehicle body.

[0045] Compared with the prior art, the present invention has the following advantages and technical effects:

[0046] In use, after connecting the device to the mobile trolley, the device is moved to the designated position on the working face by the lifting arm on the mobile trolley. When drilling at the edge of the working face, the distance between the drill rod and the telescopic part is adjusted by the lifting part. At this time, the universal joint deforms in coordination, allowing the drill rod to move away from the telescopic part and closer to the edge of the working face, while keeping the drill rod parallel to the telescopic part. This allows drilling close to the edge of the working face and perpendicular to the working face. The drill rod extends into the working face through the telescopic part to reach the preset drilling depth. During drilling, the hammering part is connected to the drill rod in a transmission. When the drive part drives the drill rod to rotate, the hammering part also drives the drill rod to hammer the drilling contact surface, which facilitates extension into the working face and improves drilling efficiency. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described 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.

[0048] Figure 1 This is a schematic diagram of the structure of the present invention;

[0049] Figure 2 This is a schematic diagram of the inclined drilling assembly structure of the present invention;

[0050] Figure 3 For the present invention Figure 2 Enlarged view of a portion of point A in the middle;

[0051] Figure 4 This is a schematic diagram of the impact block assembly structure of the present invention;

[0052] Figure 5 This is a schematic diagram of the V-shaped groove structure of the present invention;

[0053] Figure 6 This is a schematic diagram of the counterweight balancing component structure of the present invention;

[0054] The components include: 1. Connector; 2. Counterweight balancing assembly; 3. Rotating assembly; 4. Slide rail; 5. Hydraulic rod; 6. Slide table; 7. Inclined drilling assembly; 8. Sleeve; 9. Hinge support; 10. Drill rod; 201. Counterweight housing; 202. Motor 3; 203. Threaded rod; 204. Counterweight block; 301. Turntable; 302. Motor 1; 701. Lifting rod; 702. Guide housing; 704. Universal joint 1; 705. Telescopic rod; 706. Universal joint 2; 707. Motor 2; 708. Spring; 709. Impact ring; 710. Impact block assembly; 711. Piston; 7101. Impact block body; 7102. Sliding column; 7103. V-shaped slide groove; 1001. Limiting slide groove. Detailed Implementation

[0055] 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.

[0056] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] Reference Figures 1 to 6 This invention discloses a tunnel drilling device for drill-and-blast construction, comprising:

[0058] Connector 1 is used to connect to the vehicle body; one end of connector 1 is connected to the fixed end of rotating component 3, the movable end of rotating component 3 is connected to inclined drilling component 7, and the other end of connector 1 is connected to counterweight balancing component 2.

[0059] The inclined drilling assembly 7 includes:

[0060] The telescopic part has its fixed end connected to the movable end of the rotating component 3;

[0061] The lifting part has a fixed end connected to the movable end of the telescopic part, and the moving direction of the movable end of the lifting part is set perpendicular to the moving direction of the movable end of the telescopic part.

[0062] The drill rod 10 is slidably disposed in the middle at the movable end of the lifting part; a hammering part is provided in the movable end of the lifting part, and the hammering part is connected to the drill rod 10 in a transmission manner.

[0063] The drive unit has its fixed end fixedly connected to the movable end of the telescopic unit, and its output shaft is connected to the drill rod 10 via a universal joint.

[0064] In use, after connecting the device to the mobile trolley, the device is moved to the designated position on the working face by the lifting arm on the mobile trolley. When drilling the edge of the working face, the distance between the drill rod 10 and the telescopic part is adjusted by the lifting part. At this time, the universal joint deforms in coordination, allowing the drill rod 10 to move away from the telescopic part and closer to the edge of the working face, while keeping the drill rod 10 parallel to the telescopic part. This allows drilling close to the edge of the working face and perpendicular to the working face. The drill rod 10 extends into the working face through the telescopic part to reach the preset drilling depth. During drilling, the hammer part is connected to the drill rod 10 in a transmission manner. When the drive part drives the drill rod 10 to rotate, the hammer part also drives the drill rod 10 to hammer the drilling contact surface, which facilitates extension into the working face and improves drilling efficiency.

[0065] As an optional implementation, the universal joint includes:

[0066] Universal joint 704, one end is hinged to drill pipe 10;

[0067] The telescopic rod 705 is hinged at one end to the other end of the universal joint 704;

[0068] Universal joint 706 has one end hinged to the other end of telescopic rod 705, and the other end of universal joint 706 is hinged to the output shaft of the drive unit.

[0069] By using universal joint 704, universal joint 706 and telescopic rod 705, the power output of the drive unit can be sent to the drill pipe 10 to make it rotate.

[0070] As an optional implementation, the drive unit includes:

[0071] Motor 2 707, the fixed end is connected to the movable end of the telescopic part, and the output shaft of motor 2 707 is hinged to universal joint 2 706.

[0072] As an optional implementation, the lifting unit includes:

[0073] The lifting rod 701 has a fixed end that is fixedly connected to the movable end of the telescopic part. The movable end of the lifting rod 701 is fixedly connected to a guide shell 702, and the hammering part is located inside the guide shell 702.

[0074] The lifting rod 701 can change the relative distance between the drill rod 10 and the telescopic part. When drilling at the edge of the working face, due to the size limitation of the equipment, it is difficult for the drill rod 10 to get close to the edge of the working face. At this time, the lifting rod 701 can move the drill rod 10 away from the telescopic part and move the drill rod 10 closer to the edge of the working face, so that the drilling can be performed at the edge of the working face.

[0075] As an optional implementation, the hammering part includes:

[0076] The impact ring 709 is axially connected to the outside of the drill pipe 10;

[0077] The impact block assembly 710 is sleeved on the outside of the drill pipe 10. The impact block assembly 710 is connected to the drill pipe 10 in a driving manner, the impact block assembly 710 is connected to the impact ring 709 in a driving manner, and the impact block assembly 710 is connected to the guide shell 702 in a driving manner.

[0078] Piston 711 is disposed between impact ring 709 and impact block assembly 710, and impact block assembly 710 collides with impact ring 709 through piston 711;

[0079] The elastic part is disposed between the guide shell 702 and the impact ring 709.

[0080] As an optional implementation, the elastic part includes a spring 708, which is coaxially sleeved on the outside of the drill rod 10. One end of the spring 708 abuts against the inner wall of the guide shell 702, and the other end of the spring 708 abuts against the impact ring 709.

[0081] As an optional implementation, the impact block assembly 710 includes:

[0082] The impact block 7101 is coaxially sleeved on the outside of the drill rod 10. The drill rod 10 has symmetrically arranged limiting grooves 1001. The inner side of the impact block 7101 is vertically slidably engaged with the limiting grooves 1001 through the sliding column 7102. The impact block 7101 is radially limited by the sliding column 7102 and the limiting grooves 1001. The impact block 7101 rotates together with the drill rod 10 through the engagement of the sliding column 7102 and the limiting grooves 1001. The outer side of the impact block 7101 has several V-shaped grooves 7103 connected end to end. A slider is slidably connected in the V-shaped grooves 7103. The slider is fixed to the inner wall of the guide shell 702.

[0083] The impact block 7101 is connected to the piston 711 via a transmission.

[0084] When the drill rod 10 rotates under the action of the motor 707, the drill rod 10 drives the impact block 7101 to rotate synchronously through the radial limiting cooperation between the limiting groove 1001 and the sliding column 7102. When the impact block 7101 rotates, due to the several V-shaped grooves 7103 connected end to end on its outer side, the V-shaped grooves 7103 slide in cooperation with the slider fixed to the inner wall of the guide shell 702. As the impact block 7101 rotates, the slider slides in the V-shaped grooves 7103, causing the impact block 7101 to slide back and forth in the limiting groove 1001 and cooperate with the piston 711 in transmission. A gap is set between the piston 711 and the impact block assembly 710, and the piston 711 is sealed in the guide shell 702. The piston 711 is fitted on the outside of the drill rod 10 in a sliding fit. The piston 711 and the drill rod 10 are in a sealed sliding fit. When the impact block 7101 moves downward, the distance between it and the piston 711 increases. At this time, in order to maintain the air pressure balance between the piston 711 and the impact block 7101, the piston 711 moves closer to the impact block 7101 and away from the impact ring 709. When the impact block 7101 moves upward, the distance between the piston 711 and the impact block 7101 decreases. In order to maintain the air pressure balance between the piston 711 and the impact block 7101, the piston 711 moves away from the impact block 7101 and collides with the impact ring 709, causing the drill rod 10 to vibrate. The spring 708 is used to reset the drill rod 10.

[0085] The cavity between the impact ring 709 and the guide shell 702, which is used to house the spring 708, is connected to the outside through an opening.

[0086] The impact ring 709 has a through hole.

[0087] As an optional implementation, the telescopic part includes:

[0088] Slide 4, one end of which is fixed to the movable end of the rotating component 3;

[0089] The slide table 6 is slidably mounted on the slide rail 4, and the slide table 6 is fixedly connected to the fixed end of the telescopic rod 705 and the fixed end of the lifting rod 701.

[0090] The fixed end of the hydraulic rod 5 is fixedly connected to the movable end of the rotating assembly 3, and the movable end of the hydraulic rod 5 is fixedly connected to the slide table 6.

[0091] The position of the slide table 6 relative to the slide rail 4 can be adjusted by the hydraulic rod 5, so that the drill rod 10 can drill a hole deeper into the working face.

[0092] The hydraulic rod 5, as the core actuator of the hydraulic system, plays a crucial role in driving the rock drilling equipment, transmitting high-pressure power, and buffering impacts during drilling and blasting at the tunnel face. Its structure mainly consists of a rod body made of high-strength alloy steel, a piston, a sealing system, a buffer mechanism, and connecting components. The rod body has receiving cavities at both ends, inside which a sliding connecting rod is installed. The end of the connecting rod is machined with precision threads for load connection. The outer circumferential wall of the rod is coated with a 0.05–0.1 mm thick hard chrome wear-resistant layer, significantly improving its anti-wear and corrosion resistance. Dynamic sealing is achieved between the piston and the rod body through multiple sealing rings and rubber sleeves, ensuring no hydraulic oil leakage. The buffer mechanism includes a compression spring and a limiting ring. The spring is pre-compressed and installed at the bottom of the receiving cavity. When external impact force is transmitted, the spring absorbs inertial kinetic energy, allowing the connecting rod to slide approximately 5–10 mm relative to the rod body, preventing damage to the threaded connection due to instantaneous impact. For structural reinforcement, some heavy-duty hydraulic rods are welded with triangular support plates (such as the lower triangular support plate between the base plate and the rod body) to improve bending stiffness.

[0093] The hydraulic lines utilize multi-layered, high-pressure steel wire tubing (pressure resistant 350MPa), connected to the inlet and outlet ports of the hydraulic rod via quick-connect couplings. The hydraulic circuit layout must avoid twisting to reduce flow resistance and ensure coordinated control with the pump and valve system of the hydraulic power unit (output pressure typically 16–45MPa). During connection, the installation angle must be calibrated to ensure the hydraulic rod's extension axis aligns with the drill arm's advance direction; otherwise, it may cause uneven wear or seal failure.

[0094] During drilling and blasting operations at the working face, high-pressure oil output from the hydraulic power station, after being regulated by the control valve group, is injected into the rodless chamber of the hydraulic rod through the inlet pipe. This pushes the piston and piston rod outward, driving the inclined drilling assembly 7 to cut into the rock strata at a speed of 0.5–2 m / s (the rock mass compressive strength can reach over 150 MPa). During drilling, the hydraulic system dynamically adjusts parameters according to the lithology. During the piston rod retraction phase, oil enters the rod chamber, while the oil in the rodless chamber is filtered through the return pipe and returned to the oil tank. During rock drilling, when the drill bit encounters rock fissures or sudden loads, the hydraulic rod's buffering mechanism is activated—the inertial force of the piston rod compresses the spring in the receiving chamber, while the limiting ring, through the misalignment design of the groove and slide, constrains the displacement range of the connecting rod, preventing it from detaching from the chamber. This process can reduce peak impact force by more than 70%. After drilling is completed, the blasting charge triggers rock fracturing, and the hydraulic rod then quickly retracts the drill arm under system control, leaving space for ventilation and muck removal. The entire cycle is automated by an electro-hydraulic combined control system, which monitors pressure and displacement signals in real time through sensors to ensure drilling accuracy (error ≤15mm) and operational safety.

[0095] As an optional implementation, the counterweight balancing assembly 2 includes:

[0096] The counterweight housing 201 is fixedly connected at one end to the connector 1;

[0097] Motor 3202 is embedded in connector 1;

[0098] The threaded rod 203 is rotatably mounted inside the counterweight housing 201, and the threaded rod 203 is shaft-connected to the output shaft of the motor 202.

[0099] The counterweight 204 is threadedly engaged with the threaded rod 203. The counterweight 204 is vertically slidably disposed inside the counterweight housing 201. The counterweight 204 has a groove, and a protrusion is fixedly connected inside the counterweight housing 201. The counterweight 204 and the counterweight housing 201 are radially limited by the groove and the protrusion.

[0100] To ensure the balance between the drilling end and the tail end during the operation of the device and reduce the pressure at the lifting arm connection point, the counterweight 204 is threadedly engaged with the threaded rod 203. When the motor 202 rotates, the position of the counterweight 204 can be adjusted to achieve the purpose of front-to-back balance.

[0101] As an optional implementation, the rotating assembly 3 includes:

[0102] Turntable 301 is rotatably connected to connecting body 1;

[0103] One end of the connecting body 1 is shaft-connected to a sleeve 8, and the turntable 301 is rotatably disposed inside the sleeve 8;

[0104] Motor 302, the fixed end is embedded in the connecting body 1, and the movable end of motor 302 is shaft-connected to turntable 301;

[0105] Two hinge supports 9 are fixedly connected to one side of the connecting body 1. The hinge supports 9 are used to connect to the lifting arm on the moving vehicle body.

[0106] Since the tangent angles at the edges of the tunnel face are different, the rotation angle of the slide rail 4 can be adjusted by the turntable 301 driven by motor 302, so that the drill rod 10 can approach the edges of the tunnel face at different positions.

[0107] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0108] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A tunnel drilling device for drill-and-blast construction, characterized in that, include: Connector (1) is used to connect to the vehicle body; one end of the connector (1) is connected to the fixed end of the rotating component (3), the movable end of the rotating component (3) is connected to the inclined drilling component (7), and the other end of the connector (1) is connected to the counterweight balancing component (2). The inclined drilling assembly (7) includes: The telescopic part has its fixed end connected to the movable end of the rotating assembly (3); The lifting part has a fixed end connected to the movable end of the telescopic part, and the moving direction of the movable end of the lifting part is perpendicular to the moving direction of the movable end of the telescopic part. The drill rod (10) is slidably disposed in the middle at the movable end of the lifting part; a hammering part is provided in the movable end of the lifting part, and the hammering part is connected to the drill rod (10) in a transmission manner. The drive unit has a fixed end that is fixedly connected to the movable end of the telescopic unit, and the output shaft of the drive unit is connected to the drill rod (10) via a universal joint. The universal joint includes: Universal joint 1 (704), one end of which is hinged to the drill rod (10); One end of the telescopic rod (705) is hinged to the other end of the universal joint (704); Universal joint two (706) has one end hinged to the other end of the telescopic rod (705), and the other end of the universal joint two (706) is hinged to the output shaft of the drive unit; The lifting unit includes: The lifting rod (701) has a fixed end that is fixedly connected to the movable end of the telescopic part. The movable end of the lifting rod (701) is fixedly connected to a guide shell (702), and the hammering part is disposed inside the guide shell (702). The hammering part includes: The impact ring (709) is axially connected to the outside of the drill pipe (10); An impact block assembly (710) is sleeved on the outside of the drill rod (10). The impact block assembly (710) is connected to the drill rod (10) in a driving connection. The impact block assembly (710) is connected to the impact ring (709) in a driving connection. The impact block assembly (710) is connected to the guide shell (702) in a driving connection. A piston (711) is disposed between the impact ring (709) and the impact block assembly (710), the impact block assembly (710) colliding with the impact ring (709) through the piston (711). An elastic part is disposed between the guide shell (702) and the impact ring (709); The elastic part includes a spring (708), which is coaxially sleeved on the outside of the drill rod (10). One end of the spring (708) abuts against the inner wall of the guide shell (702), and the other end of the spring (708) abuts against the impact ring (709). The impact block assembly (710) includes: An impact block (7101) is coaxially sleeved on the outside of the drill rod (10). The drill rod (10) has symmetrically arranged limiting grooves (1001). The inner side of the impact block (7101) is vertically slidably engaged with the limiting groove (1001) through a sliding column (7102). The impact block (7101) is radially limited by the sliding column (7102) and the limiting groove (1001). The impact block (7101) rotates together with the drill rod (10) through the engagement of the sliding column (7102) and the limiting groove (1001). The outer side of the impact block (7101) has several V-shaped grooves (7103) that are connected end to end. A slider is slidably connected in the V-shaped groove (7103). The slider is fixed to the inner wall of the guide shell (702). The impact block (7101) is connected to the piston (711) in a transmission connection.

2. The tunnel drilling equipment for drill-and-blast construction according to claim 1, characterized in that, The drive unit includes: Motor 2 (707) has its fixed end connected to the movable end of the telescopic part, and the output shaft of Motor 2 (707) is hinged to Universal Joint 2 (706).

3. The tunnel drilling equipment for drill-and-blast construction according to claim 1, characterized in that, The telescopic part includes: The slide (4) is fixed at one end to the movable end of the rotating assembly (3); The slide (6) is slidably mounted on the slide rail (4), and the slide (6) is fixedly connected to the fixed end of the telescopic rod (705) and the fixed end of the lifting rod (701); The fixed end of the hydraulic rod (5) is fixedly connected to the movable end of the rotating assembly (3), and the movable end of the hydraulic rod (5) is fixedly connected to the slide (6).

4. The tunnel drilling equipment for drill-and-blast construction according to claim 1, characterized in that, The counterweight balancing assembly (2) includes: The counterweight housing (201) is fixedly connected at one end to the connector (1); Motor 3 (202) is embedded in the connecting body (1); A threaded rod (203) is rotatably disposed inside the counterweight housing (201), and the threaded rod (203) is shaft-connected to the output shaft of the motor (202); The counterweight (204) is threadedly engaged with the threaded rod (203). The counterweight (204) is vertically slidably disposed inside the counterweight housing (201). The counterweight (204) has a groove. A protrusion is fixedly connected inside the counterweight housing (201). The counterweight (204) and the counterweight housing (201) are radially limited and engaged by the groove and the protrusion.

5. The tunnel drilling equipment for drill-and-blast construction according to claim 1, characterized in that: The rotating assembly (3) includes: The turntable (301) is rotatably connected to the connecting body (1); One end of the connecting body (1) is axially connected to a sleeve (8), and the turntable (301) is rotatably disposed inside the sleeve (8); Motor 1 (302) has its fixed end embedded in the connecting body (1), and the movable end of the motor 1 (302) is axially connected to the turntable (301); Two hinge supports (9) are fixed to one side of the connector (1), and the hinge supports (9) are used to connect to the lifting arm on the moving vehicle body.

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