Propelling device for rock drill and drill jumbo

Abstract

The invention relates to the field of rock drilling trolley equipment, in particular to a propelling device for a rock drill and a drill jumbo, the propelling device comprises a propelling device body, the propelling device body comprises a mounting beam, a pulley mounting seat is slidably arranged at the mounting beam, and a pulley is rotatably arranged at the pulley mounting seat; a transmission steel wire rope located at the position of the pulley is arranged in the pulley installation base, a sensor installation groove is formed in the position of the pulley installation base, a pressure sensor is arranged in the sensor installation groove, and the propelling device body further comprises an adjusting mechanism used for adjusting the tensioning degree of the transmission steel wire rope. Closed-loop automatic control over the tensioning degree is achieved through an adjusting mechanism composed of the PLC, the driving motor, the screw and the like, manual intervention is not needed, the PLC automatically controls the driving motor to act according to detection data, tensioning adjustment is completed, the adjusting process can be conducted at intervals or synchronously in the rock drilling operation, shutdown is not needed, the adjusting time is greatly saved, and the working efficiency is improved. The construction progress is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of rock drilling rig equipment, and more specifically, to a propulsion device for a rock drill and a rock drilling rig. Background Technology

[0002] In mining, tunneling, and various underground engineering constructions, rock drilling rigs are indispensable core rock drilling equipment. Their high drilling efficiency and stable operation make them widely used in complex working conditions. The propulsion device is a crucial component of the rock drilling rig; the accuracy and efficiency of rock drilling operations largely depend on its performance. Its main function is to drive the rock drill smoothly along a predetermined trajectory, completing the feed and retraction of the drill rod. The transmission wire rope is the core component of the propulsion device for transmitting power; its tension directly affects the smoothness of power transmission, the stability of operation, and also influences the service life of the equipment.

[0003] In existing rock drilling rigs, the propulsion system typically uses a transmission wire rope in conjunction with a pulley assembly to transmit power. To ensure uninterrupted power transmission, it's crucial to prevent both wire rope slack from slipping and jumping, and excessive tension from causing fatigue damage and breakage. Therefore, the wire rope tension must be consistently maintained within a suitable range. However, most rock drilling rig propulsion systems on the market currently lack a dedicated mechanism for detecting wire rope tension, making it impossible to accurately monitor the wire rope's tension status in real time.

[0004] In actual construction, operators can only pull the wire rope by hand, judging the tension based on feel and experience. This method relies entirely on subjective feeling, resulting in significant errors and making it impossible to accurately grasp the actual state of the wire rope. If the judgment is inaccurate, insufficient wire rope tension will lead to delayed power transmission, decreased drilling accuracy, and accelerated abnormal wear on the wire rope and pulley assembly. If the tension is excessive, the wire rope will bear too much tension, accelerating aging and fatigue, shortening its service life, easily causing equipment failure, and increasing maintenance costs. Moreover, if the wire rope tension is found to be substandard, the current method can only rely on manual adjustment, which is cumbersome and time-consuming, requiring work to be stopped to complete, seriously delaying the construction progress. At the same time, manual adjustment also depends on the operator's experience, making it difficult to accurately control the tension and adapt to the different wire rope tension requirements under different construction conditions. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0006] A propulsion device for a rock drill includes a propulsion device body, which includes a mounting beam. A pulley mounting seat is slidably disposed on the mounting beam, and a pulley mounting frame is slidably disposed on the pulley mounting seat. A mounting shaft is disposed in the pulley mounting frame, and a pulley is rotatably disposed on the mounting shaft. A strip-shaped through hole is provided in the pulley mounting seat, and the upper end of the pulley extends out of the strip-shaped through hole. A transmission steel wire rope is disposed in the pulley mounting seat, and a sensor mounting groove is provided in the pulley mounting seat. A pressure sensor is disposed in the sensor mounting groove. A compression head is provided on the pulley mounting frame corresponding to the pressure sensor. The compression head is used to cooperate with the pressure sensor to detect the tension of the transmission steel wire rope. The propulsion device body also includes an adjustment mechanism for adjusting the tension of the transmission steel wire rope.

[0007] As a preferred embodiment of the present invention, the mounting beam is provided with a propulsion hydraulic cylinder, and the end of the piston rod of the propulsion hydraulic cylinder is connected to the pulley mounting seat to drive the pulley mounting seat to move.

[0008] As a preferred embodiment of the present invention, a mounting base is slidably provided at the mounting beam, and a rock drill hydraulic motor is provided at the mounting base. The shaft of the rock drill hydraulic motor is used to connect with the drill rod. One end of the transmission wire rope passes through the strip-shaped through hole and is connected to the mounting base to drive the mounting base to move.

[0009] As a preferred embodiment of the present invention, the adjustment mechanism includes a connecting frame disposed in the mounting beam, the other end of the transmission steel wire rope being connected to the connecting frame, and an adjustment frame disposed in the mounting beam. The adjustment frame has a screw hole, and a screw rod is disposed in the screw hole. One end of the screw rod is rotatably connected to the connecting frame, and the other end of the screw rod is inwardly contracted to form a connecting part with a regular hexagonal cross-section. A drive motor is disposed in the mounting beam, and the shaft of the drive motor extends into the connecting beam. The end of the drive motor shaft extending into the connecting beam has an adjustment blind hole that is clearance-fitted with the connecting part, and the connecting part extends into the adjustment blind hole. The adjustment mechanism also includes a PLC controller, which is electrically connected to a pressure sensor and a drive motor. The PLC controller is used to receive pressure data from the pressure sensor and control the shaft of the drive motor to rotate according to the pressure data to drive the screw rod to rotate. The screw rod is used to drive the connecting frame to move in order to adjust the tension of the transmission steel wire rope.

[0010] As a preferred embodiment of the present invention, the connecting frame is provided with a connecting frame through hole, the screw is provided with a connecting blind hole at the end near the connecting frame, the connecting frame is provided with a pin with a hole, the end of the pin with a hole passes through the connecting frame through hole and extends into the connecting blind hole, the screw is provided with a fixing pin mounting through hole that passes through the connecting blind hole, and a fixing pin passes through the pin with a hole in the fixing pin mounting through hole.

[0011] As a preferred embodiment of the present invention, the connecting frame is provided with a plurality of pin holes, which are evenly distributed along the length direction of the connecting frame. The other end of the transmission steel wire rope is provided with a connector, and the connector is provided with a connector through hole. The connecting frame is provided with a connecting pin that passes through the pin holes and the connector through hole to connect the connecting frame with the end of the transmission steel wire rope. The mounting beam is provided with a mounting opening corresponding to the connecting frame.

[0012] As a preferred embodiment of the present invention, the pulley mounting base is bolted to a mounting plate, the mounting plate and the mounting beam are fitted with a clearance, the mounting plate is provided with a support plate extending into the pulley mounting base, and the outer side wall of the pulley mounting frame is provided with a strip plate corresponding to the support plate.

[0013] As a preferred embodiment of the present invention, the pulley is provided with a bearing sleeved on the mounting shaft.

[0014] As a preferred embodiment of the present invention, the mounting beam is provided with a strip-shaped opening for the pressure sensor cable to pass through.

[0015] The present invention also provides a rock drilling rig, which includes a rock drilling rig body and the aforementioned propulsion device for a rock drill is provided on the rock drilling rig body.

[0016] The beneficial effects of this invention are as follows: 1. This invention achieves closed-loop automatic control of tension through an adjustment mechanism composed of a PLC controller, a drive motor, and a screw: without manual intervention, the PLC controller automatically controls the drive motor to adjust the tension based on the detection data. The adjustment process can be carried out during or simultaneously with rock drilling operations without stopping the machine, which greatly saves adjustment time and ensures the construction progress.

[0017] 2. In this invention, the multiple evenly distributed pin holes on the connecting frame can be selected to connect the transmission wire rope according to the initial tension requirements of different working conditions (such as drill rod length, rock hardness, and feed speed), so as to quickly adapt to changes in working conditions.

[0018] 3. This invention ensures that the tension of the transmission wire rope is always within the optimal range through real-time detection and automatic adjustment, reducing lag and loss in the power transmission process: the power of the propulsion hydraulic cylinder is accurately transmitted to the mounting base through the transmission wire rope, driving the drill rod to feed and retract smoothly, avoiding drill rod vibration or displacement deviation caused by wire rope slack, and improving the hole position accuracy and verticality of rock drilling operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the propulsion device used in the rock drill in Example 1; Figure 2 This is a cross-sectional view of the propulsion device used in the rock drill in Example 1; Figure 3for Figure 2 Enlarged view of section A; Figure 4 This is a schematic diagram of the pulley mounting base in Example 1; Figure 5 This is a schematic diagram of the adjustment mechanism in Example 1; Figure 6 This is a cross-sectional view of the adjustment mechanism in Example 1; Figure 7 for Figure 6 Enlarged view of section B; Figure 8 This is a schematic diagram of the transmission wire rope in Example 1; Figure 9 This is a schematic diagram of the pulley mounting bracket in Example 1.

[0020] The attached figures are labeled as follows: 100. Propulsion device body; 110. Mounting beam; 120. Pulley mounting base; 130. Transmission wire rope; 140. Mounting base; 150. Rock drill hydraulic motor; 160. Drive motor; 170. Strip-shaped opening; 210. Propulsion hydraulic cylinder; 220. Connecting frame; 230. Adjusting frame; 240. Connecting pin; 250. Mounting opening; 310. Pulley mounting frame; 320. Mounting shaft; 330. Pulley; 340. Strip-shaped through hole; 350. Sensor mounting slot; 360, pressure sensor; 370, extrusion head; 410, mounting plate; 420, support plate; 510, screw hole; 520, screw; 530, connecting part; 540, pin hole; 610, adjustment blind hole; 620, connecting bracket through hole; 630, pin with hole; 710, connecting blind hole; 720, fixing pin mounting through hole; 730, fixing pin; 810, connector; 820, connector through hole; 910, strip plate; 920, bearing. Detailed Implementation

[0021] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0022] Example 1, as Figure 1-9As shown, this embodiment provides a rock drilling rig, which includes a rock drilling rig body and a propulsion device for a rock drill mounted on the rock drilling rig body. The propulsion device for the rock drill includes a propulsion device body 100, and the core load-bearing component of the propulsion device body 100 is a mounting beam 110. A pulley mounting seat 120 is slidably arranged on the mounting beam 110 along its length. To achieve movable installation of the pulley assembly, a pulley mounting frame 310 is slidably mounted inside the pulley mounting seat 120. A mounting shaft 320 is fixedly inserted through the pulley mounting frame 310, and a pulley 330 is rotatably sleeved on the outside of the mounting shaft 320. A bearing 920 sleeved on the mounting shaft 320 is installed in the pulley 330 to reduce frictional loss when the pulley 330 rotates. A strip-shaped through hole 340 is opened in the pulley mounting seat 120 corresponding to the position of the pulley 330. The upper end of the pulley 330 extends out of the pulley mounting seat 120 through the strip-shaped through hole 340 for cooperation with the transmission wire rope 130.

[0023] The pulley mounting base 120 has a transmission steel wire rope 130 that fits against the pulley 330. To achieve real-time detection of the tension of the transmission steel wire rope 130, a sensor mounting groove 350 is provided on the inner side wall of the pulley mounting base 120. A pressure sensor 360 is fixedly mounted in the sensor mounting groove 350. A pressing head 370 is integrally formed on the side of the pulley mounting bracket 310 corresponding to the pressure sensor 360. The pressing head 370 abuts against the detection end face of the pressure sensor 360. The displacement of the pulley mounting bracket 310 drives the pressing head 370 to press the pressure sensor 360, thereby converting the tension of the transmission steel wire rope 130 into a pressure signal. The mounting beam 110 has a strip-shaped opening 170 at the cable arrangement position of the pressure sensor 360, allowing the cable of the pressure sensor 360 to pass through, ensuring that the cable arrangement is neat and does not affect the movement of the components.

[0024] To power the pulley mounting base 120, a propulsion hydraulic cylinder 210 is fixedly installed inside the mounting beam 110. The end of the piston rod of the propulsion hydraulic cylinder 210 is fixedly connected to the pulley mounting base 120. The extension and retraction of the propulsion hydraulic cylinder 210 drives the pulley mounting base 120 to slide along the mounting beam 110. A mounting base 140 is also slidably mounted on the mounting beam 110. A rock drill hydraulic motor 150 is fixedly installed on the mounting base 140. The shaft of the rock drill hydraulic motor 150 is used to connect with the drill rod to provide rotational power for rock drilling operations. One end of the transmission wire rope 130 passes through the strip-shaped through hole 340 and is fixedly connected to the mounting base 140. The traction of the transmission wire rope 130 drives the mounting base 140 to move along the mounting beam 110, realizing the feed and retraction of the drill rod.

[0025] The propulsion device body 100 is also equipped with an adjustment mechanism for adjusting the tension of the transmission wire rope 130. The adjustment mechanism includes a connecting frame 220 and an adjustment frame 230 disposed inside the mounting beam 110. The other end of the transmission wire rope 130 is detachably connected to the connecting frame 220. The specific connection structure is as follows: the connecting frame 220 has multiple pin holes 540 evenly distributed along the length of the connecting frame 220. The other end of the transmission wire rope 130 is fixedly connected to a connector 810, which has a connector through hole 820. A connecting pin 240 is provided at the connecting frame 220, passing through the corresponding pin hole 540 and connector through hole 820 to fix the connecting frame 220 to the end of the transmission wire rope 130. The mounting beam 110 has an installation opening 250 at the assembly position of the connecting frame 220 to facilitate the installation, disassembly, and maintenance of the connecting frame 220 and the transmission wire rope 130.

[0026] The adjusting frame 230 is fixedly assembled inside the mounting beam 110. The adjusting frame 230 has a screw hole 510, and a screw rod 520 is threaded through the screw hole 510. One end of the screw rod 520 is rotatably connected to the connecting frame 220. The specific connection structure is as follows: the connecting frame 220 has a connecting frame through hole 620, and the end of the screw rod 520 near the connecting frame 220 has a connecting blind hole 710. A perforated pin 630 passes through the connecting frame 220, and the end of the perforated pin 630 passes through the connecting frame through hole 620 and extends into the connecting blind hole 710. The screw rod 520 has a fixing pin mounting through hole 720 that passes through the connecting blind hole 710, and a fixing pin 730 passes through the fixing pin mounting through hole 720. The fixing pin 730 also passes through the through hole of the perforated pin 630, so as to realize the rotatable connection between the screw rod 520 and the connecting frame 220 and restrict axial displacement.

[0027] The other end of the screw 520 tapers inward to form a connecting part 530 with a regular hexagonal cross-section. A drive motor 160 is fixedly mounted on the mounting beam 110. The shaft of the drive motor 160 extends into the mounting beam 110, and an adjustment blind hole 610 is provided at the end of the shaft extending into the mounting beam 110. The cross-section of the adjustment blind hole 610 is adapted to the connecting part 530, and the connecting part 530 extends into the adjustment blind hole 610 to form a clearance fit, ensuring that the power of the drive motor 160 can be transmitted to the screw 520. The adjustment mechanism also includes a PLC controller, which is electrically connected to the pressure sensor 360 and the drive motor 160. The PLC controller is used to receive pressure data from the pressure sensor 360 and control the forward and reverse rotation of the drive motor 160 shaft according to the pressure data, thereby driving the screw 520 to rotate. The screw 520 drives the connecting frame 220 to move along the mounting beam 110 through a threaded engagement, thereby adjusting the tension of the transmission wire rope 130.

[0028] To improve the assembly stability of the pulley mounting base 120 and the mounting beam 110, the pulley mounting base 120 is fixedly connected to the mounting plate 410 by bolts. The mounting plate 410 and the mounting beam 110 form a clearance fit to avoid interference during sliding. A support plate 420 is integrally formed on the side of the mounting plate 410 facing the pulley mounting base 120. The support plate 420 extends into the pulley mounting base 120. A strip plate 910 is integrally formed on the outer wall of the pulley mounting frame 310 corresponding to the position of the support plate 420. The strip plate 910 is fitted to the support plate 420 and plays a guiding and supporting role in the sliding of the pulley mounting frame 310.

[0029] When the hydraulic cylinder 210 extends or retracts, it drives the pulley mounting base 120 to slide along the mounting beam 110. The pulley mounting base 120 drives the transmission wire rope 130 to move through the internal pulley 330. Since one end of the transmission wire rope 130 is fixedly connected to the mounting base 140, the traction force of the transmission wire rope 130 will drive the mounting base 140 to slide synchronously along the mounting beam 110, thereby driving the rock drill hydraulic motor 150 and drill rod on the mounting base 140 to achieve feed or retraction. At the same time, the shaft of the rock drill hydraulic motor 150 rotates, providing the rotational power required for rock drilling to the drill rod, thus completing the rock drilling operation. The bearing 920 in the pulley 330 can reduce the frictional resistance between the mounting shaft 320 and the pulley 330, ensuring smooth movement of the transmission wire rope 130 and improving power transmission efficiency.

[0030] The tension of the transmission wire rope 130 acts directly on the pulley 330. When the tension of the transmission wire rope 130 changes, the pressure on the pulley 330 changes accordingly: when the tension increases, the pressure on the pulley 330 increases, causing the pulley mounting bracket 310 to slide downwards along the pulley mounting seat 120. The pressure head 370 on the pulley mounting bracket 310 increases the pressure on the pressure sensor 360, and the pressure sensor 360 converts the pressure signal into an electrical signal and transmits it to the PLC controller. Conversely, when the transmission wire rope 130 slacks, the pressure on the pulley 330 decreases, the pressure head 370 on the pressure sensor 360 decreases, and the electrical signal transmitted from the pressure sensor 360 to the PLC controller changes accordingly. Through this mechanical structure and sensor cooperation, real-time and continuous detection of the tension of the transmission wire rope 130 is achieved.

[0031] The PLC controller pre-stores the optimal tension pressure range of the transmission wire rope 130. When the received signal from the pressure sensor 360 exceeds this range, the PLC controller automatically triggers an adjustment command. If the pressure signal is less than the set value (wire rope slack), the PLC controller controls the drive motor 160 shaft to rotate forward. The drive motor 160 drives the screw 520 to rotate through the engagement of the adjustment blind hole 610 and the connecting part 530. Because the screw 520 is threadedly engaged with the screw hole 510 of the adjustment bracket 230, and the screw 520 is rotatably connected to the connecting bracket 220, the screw 520 will rotate when it rotates. The connecting frame 220 is pushed to move away from the adjusting frame 230 along the mounting beam 110, thereby stretching the transmission steel wire rope 130 and increasing its tension. If the pressure signal is greater than the set value (the steel wire rope is too tight), the PLC controller controls the drive motor 160 shaft to rotate in reverse, driving the screw 520 to rotate in the opposite direction. The connecting frame 220 moves closer to the adjusting frame 230, the transmission steel wire rope 130 loosens, and the tension decreases. When the pressure signal detected by the pressure sensor 360 is within the set range, the PLC controller controls the drive motor 160 to stop working, completing the tension adjustment.

[0032] Furthermore, the design of multiple pin holes 540 on the connecting frame 220 allows for the selection of pin holes 540 at different positions to connect with the connector 810 according to the initial tension requirements of the transmission wire rope 130 under different construction conditions, achieving rapid adaptation to the initial tension state. The cooperation between the perforated pin 630 and the fixing pin 730 ensures both the rotational connection between the screw 520 and the connecting frame 220 and limits the axial displacement between them, ensuring the stability of power transmission during adjustment. The cooperation between the mounting plate 410, the support plate 420, and the strip plate 910 provides guidance for the sliding of the pulley mounting frame 310, preventing its deviation from causing pressure detection errors and improving the accuracy of tension detection.

[0033] The propulsion device for the rock drill in this embodiment, through the above-described scheme, can achieve the following beneficial effects: 1. In this embodiment, the propulsion device for the rock drill, through the cooperation of the pressure sensor 360 and the extrusion head 370, converts the tension of the transmission wire rope 130 into a quantifiable pressure signal. The PLC controller receives this signal in real time, realizing digital and accurate detection of the tension level, thus overcoming the limitations of subjective human judgment. Simultaneously, the sliding guide structure (support plate 420, strip plate 910) of the pulley mounting bracket 310 ensures the stability of the force exerted by the extrusion head 370 on the pressure sensor 360. The pressure sensor 360 has its cables neatly arranged through the strip opening 170, preventing cable tangling or damage that could lead to detection failure. This further improves the reliability and stability of the detection, effectively avoiding problems such as delayed power transmission and decreased drilling accuracy caused by inaccurate tension judgment.

[0034] 2. In this embodiment, the propulsion device for the rock drill achieves closed-loop automatic control of tension through an adjustment mechanism composed of a PLC controller, a drive motor 160, and a screw 520. Without manual intervention, the PLC controller automatically controls the drive motor 160 based on detection data to complete tension adjustment. This adjustment process can be performed during or simultaneously with rock drilling operations without stopping the machine, significantly saving adjustment time and ensuring construction progress. Furthermore, the drive motor 160 and screw 520 are connected to the adjustment blind hole 610 via a hexagonal connection part 530, ensuring precise power transmission and easy disassembly. The threaded connection between the adjustment frame 230 and the screw 520 allows for fine-tuning of the tension, with an adjustment accuracy higher than manual operation, ensuring that the transmission wire rope 130 is always in optimal tension.

[0035] 3. In the propulsion device for the rock drill in this embodiment, multiple evenly distributed pin holes 540 on the connecting frame 220 can be selected to connect the transmission wire rope 130 according to the initial tension requirements of different working conditions (such as drill rod length, rock hardness, propulsion speed, etc.), quickly adapting to changes in working conditions; the adjustment mechanism can respond to changes in tension in real time to avoid the tension force exceeding the safe range: when the tension force is too small, it is stretched in time to prevent the wire rope from slipping and jumping, resulting in abnormal wear; when the tension force is too large, it is relaxed in time to avoid the wire rope bearing excessive tension and accelerating aging and fatigue, extending the service life of the transmission wire rope 130 and the pulley 330, bearing 920 and other mating components, reducing equipment maintenance costs and failure rate.

[0036] 4. In this embodiment, the propulsion device for the rock drill ensures that the tension of the transmission wire rope 130 is always within the optimal range through real-time detection and automatic adjustment, reducing lag and loss during power transmission. The power of the propulsion hydraulic cylinder 210 is precisely transmitted to the mounting base 140 through the transmission wire rope 130, driving the drill rod to feed and retract smoothly, avoiding drill rod vibration or displacement deviation caused by wire rope slack, and improving the hole position accuracy and verticality of rock drilling operations. The bearing 920 in the pulley 330 reduces rotational friction, further improving power transmission efficiency. Combined with a stable tension state, the rotational power of the rock drill hydraulic motor 150 and the propulsion power are matched in synergy, improving the efficiency of rock drilling operations.

[0037] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A propulsion device for a rock drill, characterized in that: The device includes a propulsion device body (100), which includes a mounting beam (110). A pulley mounting seat (120) is slidably disposed at the mounting beam (110), and a pulley mounting frame (310) is slidably disposed at the pulley mounting seat (120). A mounting shaft (320) is disposed in the pulley mounting frame (310), and a pulley (330) is rotatably disposed at the mounting shaft (320). A strip-shaped through hole (340) is provided at the pulley mounting seat (120), and the upper end of the pulley (330) extends out of the strip-shaped through hole (340). A positioning device is provided in the pulley mounting seat (120). The transmission wire rope (130) is located at the pulley (330), and a sensor mounting groove (350) is provided at the pulley mounting base (120). A pressure sensor (360) is provided in the sensor mounting groove (350), and a pressing head (370) is provided at the pulley mounting bracket (310) corresponding to the pressure sensor (360). The pressing head (370) is used to cooperate with the pressure sensor (360) to detect the tension of the transmission wire rope (130). The propulsion device body (100) also includes an adjustment mechanism for adjusting the tension of the transmission wire rope (130).

2. The propulsion device for a rock drill according to claim 1, characterized in that: The mounting beam (110) is equipped with a propulsion hydraulic cylinder (210), and the end of the piston rod of the propulsion hydraulic cylinder (210) is connected to the pulley mounting seat (120) to drive the pulley mounting seat (120) to move.

3. The propulsion device for a rock drill according to claim 2, characterized in that: A mounting base (140) is slidably provided at the mounting beam (110), and a rock drill hydraulic motor (150) is provided at the mounting base (140). The shaft of the rock drill hydraulic motor (150) is used to connect with the drill rod. One end of the transmission wire rope (130) passes through the strip-shaped through hole (340) and is connected to the mounting base (140) to drive the mounting base (140) to move.

4. The propulsion device for a rock drill according to claim 3, characterized in that: The adjustment mechanism includes a connecting frame (220) disposed in the mounting beam (110), and the other end of the transmission wire rope (130) is connected to the connecting frame (220). The adjustment mechanism also includes an adjustment frame (230) disposed in the mounting beam (110). The adjustment frame (230) is provided with a screw hole (510), and a screw rod (520) is provided in the screw hole (510). One end of the screw rod (520) is rotatably connected to the connecting frame (220), and the other end of the screw rod (520) is inwardly contracted to form a connecting part (530) with a regular hexagonal cross section. A drive motor (160) is provided in the mounting beam (110), and the shaft of the drive motor (160) extends into the connecting beam. The drive motor (160) extends into the end of the rotating shaft in the connecting beam and is provided with an adjustment blind hole (610) that is clearance-fitted with the connecting part (530). The connecting part (530) extends into the adjustment blind hole (610). The adjustment mechanism also includes a PLC controller, which is electrically connected to the pressure sensor (360) and the drive motor (160). The PLC controller is used to receive the pressure data from the pressure sensor (360) and control the rotating shaft of the drive motor (160) to rotate according to the pressure data so as to drive the screw (520) to rotate. The screw (520) is used to drive the connecting frame (220) to move so as to adjust the tension of the transmission wire rope (130).

5. The propulsion device for a rock drill according to claim 4, characterized in that: The connecting frame (220) is provided with a connecting frame through hole (620), and the end of the screw (520) near the connecting frame (220) is provided with a connecting blind hole (710). The connecting frame (220) is provided with a pin with a hole (630). The end of the pin with a hole (630) passes through the connecting frame through hole (620) and extends into the connecting blind hole (710). The screw (520) is provided with a fixing pin mounting through hole (720) that passes through the connecting blind hole (710). The fixing pin mounting through hole (720) is provided with a fixing pin (730) that passes through the pin with a hole (630).

6. The propulsion device for a rock drill according to claim 4, characterized in that: The connecting frame (220) is provided with a plurality of pin holes (540), which are evenly distributed along the length of the connecting frame (220). The other end of the transmission steel wire rope (130) is provided with a connector (810), and the connector (810) is provided with a connector through hole (820). The connecting frame (220) is provided with a connecting pin (240) that passes through the pin holes (540) and the connector through hole (820) to connect the end of the connecting frame (220) and the transmission steel wire rope (130). The mounting beam (110) is provided with a mounting opening (250) corresponding to the connecting frame (220).

7. The propulsion device for a rock drill according to claim 1, characterized in that: The pulley mounting base (120) is bolted to a mounting plate (410). The mounting plate (410) and the mounting beam (110) are fitted with a clearance. The mounting plate (410) is provided with a support plate (420) extending into the pulley mounting base (120). The outer wall of the pulley mounting frame (310) is provided with a strip plate (910) corresponding to the support plate (420).

8. The propulsion device for a rock drill according to claim 1, characterized in that: The pulley (330) is provided with a bearing (920) sleeved on the mounting shaft (320).

9. The propulsion device for a rock drill according to claim 1, characterized in that: A strip opening (170) is provided at the mounting beam (110) for the pressure sensor (360) cable to pass through.

10. A rock drilling rig, characterized in that: It includes a rock drilling rig body, and the rock drilling rig body is provided with a propulsion device for a rock drill as described in any one of claims 1-9.

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