Universal swing oil cylinder for a jumbo

Abstract

The present application relates to swing cylinder technical field, especially in the universal swing oil cylinder for rock drilling jumbo, in view of the swing cylinder in the prior art generally lacks the problem of targeted anti-collision protection, provide a kind of universal swing oil cylinder for rock drilling jumbo, including swing cylinder, swing cylinder output end is equipped with driving shaft, driving shaft outer surface is equipped with arcuate seat, arcuate seat upper end is equipped with main beam, both sides of main beam are equipped with movable protection rod, arcuate seat inside is equipped with clutch mechanism, clutch mechanism includes the outer gear ring of being fixedly connected with driving shaft, clutch mechanism further includes the pawl of being matched with outer gear ring, when swing cylinder works, main beam can be driven to overturn;When main beam overturns and the collision occurs with tunnel inner wall, protection rod can move to make pawl and outer gear ring disengage engagement;Through real-time monitoring the contact state of advancing beam and tunnel inner wall, realize the automatic stop control of collision instant, fundamentally solve the equipment damage problem caused by traditional cylinder without protection.

Description

Technical Field

[0001] This invention relates to the field of swing cylinder technology, and in particular to a universal swing cylinder for a rock drilling rig. Background Technology

[0002] As the core equipment for drill-and-blast construction in tunnels and underground engineering, the rock drilling rig significantly improves construction efficiency and labor safety due to its mechanized operation advantages. Its efficiency is several times higher than that of traditional rock drills, making it a key piece of equipment for projects such as railway tunnels and hydraulic tunnels. The universal swing cylinder, as the core actuator for the tilting action of the main beam of the rock drilling rig's propulsion beam, directly determines the flexibility and accuracy of the drill arm positioning; its performance stability is crucial for construction continuity. However, tunnel construction scenarios have inherent spatial constraints, especially in complex geological sections such as surrounding rock. To control over-excavation, limited working space must be reserved, severely restricting the range of motion of the propulsion beam during tilting. Existing swing cylinders generally lack targeted anti-collision protection designs, focusing only on basic functional optimizations such as impact resistance and omnidirectional adjustment, without considering the collision risk avoidance requirements in the narrow environment of tunnels. Due to blind spots during the main beam rotation of the rock drilling rig, and the lack of real-time collision detection and emergency braking mechanisms in traditional cylinders, contact between the main beam and the tunnel wall or initial support frame can easily lead to damage such as piston rod bending and cylinder deformation, and even serious failure modes such as hydraulic system leakage. Such collisions not only cause economic losses due to equipment downtime and maintenance, but also disrupt construction progress and may even induce safety hazards such as face collapse, significantly falling short of the high reliability and safety requirements of modern tunnel construction. Therefore, a universal swing cylinder for rock drilling rigs is proposed to solve these problems. Summary of the Invention

[0003] This invention addresses the problem that existing swing cylinders generally lack targeted anti-collision protection, and provides a universal swing cylinder for rock drilling rigs. By monitoring the contact state between the propulsion beam and the tunnel wall in real time, it achieves automatic shutdown control at the moment of collision, fundamentally solving the equipment damage problem caused by the lack of protection of traditional cylinders, and effectively solving the problems mentioned in the background art.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows: A universal swing cylinder for a rock drilling rig includes a swing cylinder, a mounting platform on one side of the swing cylinder, a drive shaft at the output end of the swing cylinder, an arched seat on the outer surface of the drive shaft, a main beam at the upper end of the arched seat, movable guard rods on both sides of the main beam, and a clutch mechanism inside the arched seat. The clutch mechanism includes an external gear ring fixedly connected to the drive shaft and a locking tooth that engages with the external gear ring. Under normal conditions, the locking tooth engages with the external gear ring. When the swing cylinder is working, it can drive the main beam to rotate. When the main beam rotates and collides with the tunnel wall, the guard rods can move to disengage the locking tooth from the external gear ring.

[0005] Both ends of the main beam are fixedly connected to side plates. Small sliders are slidably connected to the inner walls of both ends of the side plates. A first spring that cooperates with the small sliders is provided on the inner walls of both ends of the side plates. The protective rods are rotatably connected to the inner ends of the corresponding two small sliders.

[0006] The locking teeth are slidably connected to the inner wall of the arched seat. The inner wall of the locking teeth is provided with a fixing pin. The outer surface of the protective rod is fitted with a sleeve rod in the middle. The inner end face of the two sleeve rods is fixed with a wedge plate that cooperates with the fixing pin.

[0007] The inner wall of the arched seat is hinged with a rocker plate, and the inner wall of the arched seat is also slidably connected with a square slider. The inner wall of the arched seat is also provided with a long spring that cooperates with the square slider. A first short pin is fixed to one end face of the locking tooth, and a second short pin is fixed to one end face of the square slider. A first keyway and a second keyway that cooperate with the first short pin and the second short pin are respectively opened on both sides of the rocker plate.

[0008] The inner wall of the square slider is slidably connected to a wedge-shaped locking block. The inner wall of the square slider is also provided with a second spring that cooperates with the wedge-shaped locking block. The inner wall of the arched seat is provided with two movable locking plates. The inner end face of each locking plate is provided with a slot that cooperates with the wedge-shaped locking block.

[0009] The locking plates are all slidably connected to the inner wall of the arched seat. The inner wall of the arched seat is also fixedly connected to a limiting rod. The locking plates are all sleeved on the outer surface of the limiting rod. The outer surfaces of the limiting rod are also sleeved with third springs that cooperate with the locking plates. A driven pin is fixedly connected to the lower end of one side of the locking plate. A guide plate is slidably connected to one side of the arched seat. Two oblique keyways that cooperate with the driven pins are opened in the middle of the guide plate. A second long pin that can move up and down is fixedly connected to the lower end of the guide plate.

[0010] An extension seat is fixedly connected to one end face of the mounting platform. The extension seat is provided with a movable upright seat. The upper end of the upright seat is provided with a cylindrical cross-section. A first long pin is fixedly connected to the lower end surface of the square slider. An opening groove and a centering groove that cooperate with the first long pin are opened on one end face of the cylindrical cross-section. A protrusion that cooperates with the second long pin is also fixedly connected to the inner wall of the cylindrical cross-section.

[0011] The upper end of the extension seat is provided with a long cam that can rotate. The upright seat is sleeved on the outer surface of the long cam. A drive pin is fixed to the inner wall of the middle part of the upright seat. A V-shaped groove and an arc-shaped groove that cooperate with the drive pin are opened on the outer surface of the long cam.

[0012] The swing cylinder is provided with a swing shaft, a swing arm is fixedly connected to the outer surface of the swing shaft, a swing pin is provided at the upper end of the swing arm, a spur gear is fixedly connected to the outer surface of the drive shaft, a spur rack is meshed at the lower end of the spur gear and is slidably connected to the mounting platform, a key seat is provided at the lower end of the spur rack, and a long keyway that cooperates with the swing pin is opened on the key seat.

[0013] The inner wall of the swing arm is provided with a rotatable threaded rod, and a threaded slider is threadedly connected to the outer surface of the threaded rod. The threaded slider is slidably connected to the inner wall of the swing arm, and the swing pin is fixed to the threaded slider.

[0014] Compared with the prior art, the present invention has the following advantages: In use, the rotator is first installed on the rock drilling rig. The rotator drives the swing cylinder and the main beam to rotate as a whole, flexibly adjusting the working direction. When the swing cylinder is working, it drives the swing shaft and the swing arm to swing. The swing pin moves back and forth with the swing arm and drives the rack to move. Then, the spur gear drives the drive shaft and the outer gear ring to rotate. Under normal conditions, the locking teeth and the outer gear ring are stably engaged. The drive shaft can drive the arch seat and the main beam to rotate smoothly, realizing precise adjustment of the rock drilling angle. At the same time, the position of the threaded slider and the swing pin can be changed by adjusting the motor to drive the threaded rod to rotate, thereby adjusting the stroke of the rack. The swing range of the main beam can be flexibly set according to the tunnel width to adapt to different working spaces and improve operational adaptability. The protective rods on both sides of the main beam remain extended under the action of the first spring, forming a front protection. When the main beam collides with the tunnel wall during its rotation, the protective rods are the first to contact the inner wall and are squeezed inward, causing the sleeve rod and wedge guide plate to move inward synchronously. The wedge guide plate pushes the fixing pin and the locking teeth to slide upward, causing the locking teeth to quickly disengage from the outer gear ring. At this time, the drive shaft continues to rotate but will not cause the main beam to continue to swing, achieving automatic stopping at the moment of collision. This effectively avoids the main beam from hard contacting the tunnel wall, preventing piston rod bending, cylinder scoring, and structural fracture, and fundamentally solving the problem of traditional hydraulic cylinders being easily damaged due to lack of protection. When the locking teeth move upward, the rocker plate drives the square slider and wedge block to move downward. The wedge block is unidirectionally limited by the locking plate groove, keeping the locking teeth in a disengaged state, ensuring stable and effective collision protection, and avoiding secondary impact. After the collision, the control cylinder drives the drive shaft to reverse and reset. At this time, the locking teeth are still in a disengaged state, and the main beam will not swing with the drive shaft. The cylindrical cam reverses synchronously, through V The shaped groove drives the vertical sleeve base and the cylindrical cross-section to move backward. The cylindrical cross-section drives the first long pin to rotate and return to its original position through the opening groove and the centering groove, so that the arch base and the main beam are accurately corrected and reset to a horizontal state. The cylindrical cross-section continues to move backward, the protrusion lifts the second long pin, drives the guide plate to move upward and drives the locking plate to move outward, releasing the limit on the wedge-shaped block. The square slider resets upward under the action of the long spring, pushing the locking teeth to re-engage with the outer gear ring. The device quickly returns to normal working state. The entire reset process is completed automatically without manual intervention, and the response is rapid, accurate and reliable. This device integrates automatic anti-collision and automatic reset functions, does not occupy additional installation space, has strong compatibility, and can be directly adapted to existing rock drilling rigs. Active protection greatly reduces equipment damage and maintenance frequency, reduces spare parts and maintenance costs, avoids construction interruption, and ensures continuous and efficient tunnel construction. At the same time, it reduces the monitoring burden of operators, eliminates the risk of human judgment error, and significantly improves the safety, stability and convenience of the equipment in narrow and complex tunnel environments. Attached Figure Description

[0015] Figure 1 This is an isometric view of a universal swing cylinder for a rock drilling rig according to the present invention.

[0016] Figure 2This is a schematic diagram of the drive shaft installation of a universal swing cylinder for a rock drilling rig according to the present invention.

[0017] Figure 3 This is a schematic diagram of the rack and pinion installation of a universal swing cylinder for a rock drilling rig according to the present invention.

[0018] Figure 4 This is a schematic diagram of the key seat installation for a universal swing cylinder used in a rock drilling rig according to the present invention.

[0019] Figure 5 This is a schematic diagram of the installation of the protective rod of a universal swing cylinder for a rock drilling rig according to the present invention.

[0020] Figure 6 This is a side sectional view of a universal swing cylinder for a rock drilling rig according to the present invention.

[0021] Figure 7 This is a schematic diagram of the arched seat installation of a universal swing cylinder for a rock drilling rig according to the present invention.

[0022] Figure 8 This is a cross-sectional view of the arched seat of a universal swing cylinder for a rock drilling rig according to the present invention.

[0023] Figure 9 This is a schematic diagram of the tooth installation of a universal swing cylinder for a rock drilling rig according to the present invention.

[0024] Figure 10 This is a cross-sectional view of the square slider of a universal swing cylinder for a rock drilling rig according to the present invention.

[0025] Figure 11 This is a schematic diagram of the guide plate installation for a universal swing cylinder used in a rock drilling rig according to the present invention.

[0026] Figure 12 This is a schematic diagram of the installation of the vertical sleeve of a universal swing cylinder for a rock drilling rig according to the present invention.

[0027] Figure 13 This is a schematic diagram of the cylindrical cross-section structure of a universal swing cylinder for a rock drilling rig according to the present invention.

[0028] Figure 14 This is a cross-sectional view of the vertical sleeve of a universal swing cylinder for a rock drilling rig according to the present invention.

[0029] Figure 15 This is a schematic diagram of the circumferential cam installation of a universal swing cylinder for a rock drilling rig according to the present invention.

[0030] The following are the numbered components in the diagram: 1-Swing cylinder, 2-Rotator, 3-Extension seat, 4-Mounting platform, 5-Swing shaft, 6-Swing arm, 7-Threaded slider, 8-Threaded rod, 9-Adjusting motor, 10-Key seat, 11-Swing pin, 12-Long keyway, 13-Straight rack, 14-Straight gear, 15-Drive shaft, 16-External gear ring, 17-Side plate, 18-First spring, 19-Small slider, 20-Protective rod, 21-Main beam, 22-Sleeve rod, 23-Wedge plate, 24-Clamping tooth, 25-Fixing pin, 26-Arch seat, 27-Rocker plate, 28-First short pin. 29-First keyway, 30-Second short pin, 31-Second keyway, 32-Square slider, 33-First long pin, 34-Long spring, 35-Wedge-shaped block, 36-Anti-detachment pad, 37-Second spring, 38-Locking plate, 39-Slot, 40-Limit rod, 41-Third spring, 42-Guide plate, 43-Angled keyway, 44-Driven pin, 45-Second long pin, 46-Cylindrical cam, 47-Drive pin, 48-V-groove, 49-Arc groove, 50-Vertical sleeve, 51-Cylindrical section, 52-Open groove, 53-Centered groove, 54-Protrusion. Detailed Implementation

[0031] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figures 1-15 As shown, the present invention provides a universal swing cylinder for a rock drilling rig, including a swing cylinder 1. A mounting platform 4 is provided on one side of the swing cylinder 1. A drive shaft 15 is provided at the output end of the swing cylinder 1. An arched seat 26 is provided on the outer surface of the drive shaft 15. A main beam 21 is provided at the upper end of the arched seat 26. Movable protective rods 20 are provided on both sides of the main beam 21. A clutch mechanism is provided inside the arched seat 26. The clutch mechanism includes an external gear ring 16 fixedly connected to the drive shaft 15. The clutch mechanism also includes a locking tooth 24 that cooperates with the external gear ring 16. Under normal conditions, the locking tooth 24 is engaged with the external gear ring 16. When the swing cylinder 1 is working, it can drive the main beam 21 to rotate. When the main beam 21 rotates and collides with the inner wall of the tunnel, the protective rods 20 can move to disengage the locking tooth 24 from the external gear ring 16.

[0033] like Figures 1-9As shown, the swing cylinder 1 is a swing cylinder. A rotator 2 is located at the lower end of the swing cylinder 1. The rotator 2 is mounted on the rock drilling rig. When the rotator 2 is working, it can drive the swing cylinder 1, main beam 21, etc., to rotate. The direction of the main beam 21 can be adjusted according to specific needs. Both the rotator 2 and the swing cylinder 1 are existing technologies and will not be described in detail. The mounting platform 4 is fixed to one end face of the swing cylinder 1. The drive shaft 15 is rotatably connected inside the mounting platform 4. The mounting platform 4 serves to support the drive shaft 15 and other components. The main beam 21 is fixed to the upper end of the arched seat 26. The arched seat 26 is rotatably connected to the outer surface of the drive shaft 15. Under normal conditions, the retaining teeth 24 can stably mesh with the external gear ring 16. When the drive shaft 15... During rotation, it can drive the locking teeth 24, arch seat 26, main beam 21, etc. to flip, that is, adjust the flip angle of the main beam 21; through the set protective rod 20, it can prevent the main beam 21 from directly contacting the tunnel wall in the event of a collision. That is, when the main beam 21 and the protective rod 20 flip synchronously, when they collide with the tunnel wall, the protective rod 20 can contact the tunnel wall. Under the pressure, the protective rod 20 can move on the main beam 21. When the protective rod 20 moves, it can also disengage the locking teeth 24 from the outer gear ring 16. At this time, the drive shaft 15 rotates and no longer drives the arch seat 26, main beam 21, etc. to flip, thus playing a role in real-time monitoring and protection; this universal swing oil This innovative cylinder integrates anti-collision protection, automatically stopping the machine upon impact by real-time monitoring of the contact state between the propulsion beam and the tunnel wall. This fundamentally solves the equipment damage problem caused by the lack of protection in traditional cylinders. This design effectively avoids common failure modes such as piston rod bending and cylinder scoring, significantly reducing the probability of serious malfunctions such as hydraulic system leakage and structural component breakage, providing core assurance for the safe operation of drilling rigs in narrow tunnels. Repairing traditional swing cylinders due to collisions not only requires significant manpower and resources but also disrupts construction and affects project progress. This device reduces the frequency of equipment damage through active protection, extending the lifespan of the cylinder and related components. Extended service life reduces spare parts replacement and maintenance costs; it also avoids downtime due to equipment failure, ensuring continuous and efficient tunnel construction, especially suitable for large-section tunnels, long-distance tunnels, and other scenarios with high construction progress requirements; considering the narrow tunnel space and variable surrounding rock conditions, this device does not require excessive additional installation space and can be directly adapted to the omnidirectional swing requirements of existing rock drilling rigs, exhibiting strong compatibility; its automatic shutdown function responds quickly without manual intervention, reducing the monitoring burden on operators and avoiding the risk of collisions caused by human error, significantly improving the equipment's adaptability and ease of operation in complex tunnel environments.

[0034] The main beam 21 is fixedly connected to side plates 17 at both ends. Small sliders 19 are slidably connected to the inner walls of both ends of the side plates 17. The inner walls of both ends of the side plates 17 are provided with first springs 18 that cooperate with the small sliders 19. The protective rods 20 are rotatably connected to the inner ends of the corresponding two small sliders 19.

[0035] like Figures 5-6 As shown, the side plate 17 supports and installs the small slider 19 and the first spring 18. The small slider 19 can slide left and right on the inner wall of the side plate 17. The first spring 18 always exerts an outward driving force on the small slider 19. Even if the small slider 19 and the protective rod 20 are at the outermost end under normal conditions, when the protective rod 20 comes into contact with the inner wall of the tunnel and collides, it can drive the small slider 19 to move inward, that is, compress the first spring 18. When the protective rod 20 is separated from the inner wall of the tunnel, the small slider 19, the protective rod 20, etc. can move outward and reset under the elastic force of the first spring 18.

[0036] The locking teeth 24 are slidably connected to the inner wall of the arched seat 26. The inner wall of the locking teeth 24 is provided with a fixing pin 25. The outer surface of the protective rod 20 is fitted with a sleeve rod 22. The inner end face of the two sleeve rods 22 is fixed with a wedge plate 23 that cooperates with the fixing pin 25.

[0037] like Figures 8-9 As shown, the locking tooth 24 can slide up and down on the inner wall of the arched seat 26. The fixing pin 25 is fixed to the inner wall of the locking tooth 24. When the fixing pin 25 moves up and down, it can drive the locking tooth 24 to move up and down. Through the sleeve rod 22, when the corresponding protective rod 20 moves inward, it can drive the sleeve rod 22, wedge plate 23 and other components to move inward synchronously. When the wedge plate 23 moves inward, through its cooperation with the fixing pin 25, that is, when the inclined surface of the wedge plate 23 contacts the outer surface of the fixing pin 25, the wedge plate 23 continues to move inward, which can cause the fixing pin 25 and the locking tooth 24 to move upward, thereby causing the locking tooth 24 to disengage from the outer gear ring 16.

[0038] The inner wall of the arched seat 26 is hinged with a rocker plate 27, and the inner wall of the arched seat 26 is also slidably connected with a square slider 32. The inner wall of the arched seat 26 is also provided with a long spring 34 that cooperates with the square slider 32. A first short pin 28 is fixedly connected to one end face of the locking tooth 24, and a second short pin 30 is fixedly connected to one end face of the square slider 32. A first keyway 29 and a second keyway 31 that cooperate with the first short pin 28 and the second short pin 30 are respectively opened on both sides of the rocker plate 27.

[0039] like Figures 8-9As shown, the inner wall of the arched seat 26 has multiple mounting slots for mounting components such as the rocker arm 27, the square slider 32, and the long spring 34. The rocker arm 27 can flip up and down, and the square slider 32 can slide up and down on the inner wall of the arched seat 26. The long spring 34 always has an upward driving force on the square slider 32, so that the square slider 32 can be in the highest position under normal conditions. Support seats are fixed to the outer surfaces of the first short pin 28 and the second short pin 30, respectively. The support seats are fixed to the corresponding locking teeth 24 and the square slider 32, that is, the first short pin 28 is fixed to the locking teeth 24, and the second short pin 30 is fixed to the square slider 32. Through the setting of the first short pin 28 and the second short pin 30. Rocker 27, etc. When the locking tooth 24 moves upward, under the engagement of the first short pin 28 and the first keyway 29, one end of the rocker 27 can be driven to flip upward, and the other end of the rocker 27 will flip downward. That is, under the engagement of the second sliding pin and the second keyway 31, the square slider 32 can be driven to move downward. When the square slider 32 moves downward, it can squeeze the long spring 34. Similarly, when the long spring 34 drives the square slider 32 to move upward and reset, it can drive the locking tooth 24 to move downward. That is, the locking tooth 24 engages with the outer gear ring 16 again. Under the drive of the long spring 34, the locking tooth 24 will have a downward driving force under normal conditions, so that the locking tooth 24 and the outer gear ring 16 are stably engaged.

[0040] The inner wall of the square slider 32 is slidably connected to a wedge-shaped locking block 35. The inner wall of the square slider 32 is also provided with a second spring 37 that cooperates with the wedge-shaped locking block 35. The inner wall of the arched seat 26 is provided with two movable locking plates 38. The inner end face of each locking plate 38 is provided with a slot 39 that cooperates with the wedge-shaped locking block 35.

[0041] like Figures 8-10As shown, the wedge-shaped locking block 35 can slide back and forth on the inner wall of the square slider 32. An anti-detachment pad 36 is fixedly attached to one end face of the wedge-shaped locking block 35 and is slidably connected to the square slider 32. The anti-detachment pad 36 can prevent the wedge-shaped locking block 35 from detaching from the square slider 32. One end of the second spring 37 is fixedly attached to the inner wall of the square slider 32, and the other end of the second spring 37 is fixedly attached to the anti-detachment pad 36. The second spring 37 always has a driving force on the anti-detachment pad 36 and the wedge-shaped locking block 35, even if the wedge-shaped locking block 35 is in the extended state under normal conditions. The two locking plates 38 can move left and right on the inner wall of the arched seat 26, that is, the two locking plates 38 can move inward or outward simultaneously. When the locking plates 38 move inward to the top, the two locking plates 38 can contact each other, and at this time they can cooperate with the wedge-shaped locking block 35. That is, when the slider, the wedge-shaped locking block 35, etc. move downward simultaneously, the wedge-shaped locking block 35 can move downward in one direction under the cooperation of the locking block 35 and the locking groove 39. That is, when the wedge-shaped locking block 35 moves downward, the inclined surface of the wedge-shaped locking block 35 and the inclined surface of the locking groove 39... Under surface contact engagement, the wedge-shaped locking block 35 can move to one side and enter the square slider 32, compressing the second spring 37. When the wedge-shaped locking block 35 moves downward into the next slot 39, it can be ejected to the other side under the elastic force of the second spring 37, that is, it moves out of the square slider 32 and engages with the slot 39 again. When the wedge-shaped locking block 35 is engaged with the slot 39, it can restrict the upward movement of the wedge-shaped locking block 35. That is, at this time, the straight surface of the wedge-shaped locking block 35 is in contact with the straight surface of the slot 39, which can block the upward movement of the wedge-shaped locking block 35. The wedge-shaped locking block 35 moves upward, meaning that at this time the wedge-shaped locking block 35 can only move downward in one direction. When the square slider 32, wedge-shaped locking block 35, etc. move downward simultaneously, they will also compress the long spring 34. When the square slider 32, wedge-shaped locking block 35 need to move upward to reset, the two locking plates 38 are controlled to move outward. When the locking plates 38 move outward to the designated position, the slot 39 can disengage from the wedge-shaped locking block 35. That is, at this time the wedge-shaped locking block 35, square slider 32, etc. can move upward to reset under the elastic force of the long spring 34.

[0042] The locking plates 38 are all slidably connected to the inner wall of the arched seat 26. The inner wall of the arched seat 26 is also fixedly connected to the limiting rod 40. The locking plates 38 are all sleeved on the outer surface of the limiting rod 40. The outer surfaces of the limiting rod 40 are also sleeved with third springs 41 that cooperate with the locking plates 38. The lower end of one side of the locking plate 38 is fixedly connected to the driven pin 44. The arched seat 26 is slidably connected to the guide plate 42. The guide plate 42 has two oblique keyways 43 in the middle that cooperate with the driven pin 44. The lower end of the guide plate 42 is fixedly connected to a second long pin 45 that can move up and down.

[0043] like Figures 10-11As shown, the locking plate 38 can slide left and right on the inner wall of the arched seat 26. The limiting rod 40 can further limit the locking plate 38 to only move left and right. Through the provided third spring 41, under the elastic force of the third spring 41, the locking plate 38 can be driven to move inward under normal conditions. That is, the two locking plates 38 can be at the innermost end under normal conditions, cooperating with the stable wedge-shaped locking block 35. The guide plate 42 can slide up and down on one side end face of the arched seat 26. The installation and shape of the driven pin 44, the oblique keyway 43, and the second long pin 45 are as follows. Figure 11 As shown, when the second long pin 45 moves up and down, it can drive the guide plate 42 to move up and down. When the guide plate 42 moves up and down, through the engagement of the inclined keyway 43 and the driven pin 44, it can drive the driven pin 44 and the locking plate 38 to move outward or inward; Figure 11 As shown, this state is the outermost position of the locking plate 38. Since the two third springs 41 always exert an inward driving force on the locking plate 38 under normal conditions, the second long pin 45 is at the bottom position when the locking plate 38 is at the innermost position.

[0044] An extension seat 3 is fixedly connected to one end face of the mounting platform 4. The extension seat 3 is provided with a movable upright seat 50. The upper end of the upright seat 50 is provided with a cylindrical cut surface 51. A first long pin 33 is fixedly connected to the lower end surface of the square slider 32. An opening groove 52 and a centering groove 53 that cooperate with the first long pin 33 are opened on one end face of the cylindrical cut surface 51. A protrusion 54 that cooperates with the second long pin 45 is also fixedly connected to the inner wall of the cylindrical cut surface 51.

[0045] like Figure 7 and Figures 12-13 As shown, the extension seat 3 supports and limits the movement of components such as the upright sleeve 50 and the cylindrical section 51. The upright sleeve 50 is slidably connected to the upper surface of the extension seat 3, and the cylindrical section 51 is fixed to the upper end of the upright sleeve 50. That is, when the upright sleeve 50 moves back and forth, it can drive the cylindrical section 51 to move back and forth. The cylindrical section 51, the first long pin 33, the second long pin 45, and the protrusion 54 are installed and shaped as follows: Figure 12 and Figure 13 As shown, the first long pin 33 is normally located inside the arched seat 26. With the cooperation of the protrusion 54 and the second long pin 45, when the protrusion 54 and the second long pin 45 meet, the second long pin 45 can be driven to move upward.

[0046] The upper end of the extension seat 3 is provided with a long cam that can rotate. The upright seat 50 is sleeved on the outer surface of the long cam. A drive pin 47 is fixed to the inner wall of the middle part of the upright seat 50. A V-shaped groove 48 and an arc-shaped groove 49 that cooperate with the drive pin 47 are opened on the outer surface of the long cam.

[0047] like Figures 9-15As shown, a long cam is installed at the output end of the swing cylinder 1. When the cylindrical cam 46 rotates, the drive pin 47 can move back and forth through the engagement of the V-groove 48, the arc groove 49, and the drive pin 47. The arc groove 49 has two sections, both located on both sides of the V-groove 48. When the drive pin 47 engages with the V-groove 48, the drive pin 47 and the vertical sleeve 50 can move forward or backward when the cylindrical cam 46 rotates. When the drive pin 47 engages with the arc groove 49, the drive pin 47 and the vertical sleeve 50 move forward to the top position, and no longer move when the cylindrical cam 46 rotates; that is, in the swing cylinder 1 During operation, the drive shaft 15 and cylindrical cam 46 can rotate synchronously. When the drive shaft 15 rotates, it can drive the arch seat 26 and main beam 21 to swing. When the cylindrical cam 46 rotates, through the cooperation of the V-groove 48 and the drive pin 47, the drive pin 47, the vertical sleeve 50, and the cylindrical section 51 can move forward. When the cylindrical section 51 moves forward, the protrusion 54 can disengage from the second long pin 45. After the second long pin 45 disengages from the protrusion 54, under the elastic force of the third spring 41, the two locking plates 38 can move inward, and the guide plate 42 and the second long pin 45 can move downward. When the locking plates 38 move inward to the point of contact with each other... When contacted, it can cooperate with the wedge-shaped locking block 35. When the cylindrical cam 46 continues to rotate, causing the drive pin 47 to enter the inner wall of the arc-shaped groove 49, the drive pin 47, the vertical sleeve 50, the cylindrical cut surface 51, etc., move forward to the top position. When the drive shaft 15 continues to rotate, causing the main beam 21 to collide with the inner wall of the tunnel, that is, when the protective rod 20 is squeezed, the protective rod 20 can move inward, causing the locking tooth 24 to move upward. When the locking tooth 24 moves upward, it can disengage from the outer gear ring 16. That is, when the drive shaft 15 continues to rotate, it no longer drives the arch seat 26, the main beam 21, etc. to swing, thus providing collision protection. It is automatically triggered when a collision occurs. At the same time, when the tooth 24 moves upward, it can drive the square slider 32, wedge-shaped block 35, and first long pin 33 to move downward synchronously, and compress the third spring 41. The wedge-shaped block 35 can move downward in one direction under the engagement of the slot 39. That is, after the wedge-shaped block 35 moves downward to the designated position, it can be in a stable state and will not move upward to reset. This allows the first long pin 33 to be stable after moving downward to the designated position. When the first long pin 33 moves downward, it can move out to the lower end of the arched seat 26. At this time, the first long pin 33 is in the extended state. That is, when a collision occurs, the first long pin 33 can be in the extended state, which facilitates the subsequent reset operation.After a collision, the device is in a misaligned state. Reversing the drive shaft 15 by driving the swing cylinder 1 will reset the device. Specifically, when the drive shaft 15 and cylindrical cam 46 simultaneously reverse and reset, the retaining tooth 24 and external gear ring 16 are disengaged, preventing the retaining tooth 24, arched seat 26, and main beam 21 from reversing and resetting. When the cylindrical cam 46 reverses, the drive pin 47 slides back from the inner wall of the arc-shaped groove 49 into the inner wall of the V-shaped groove 48. Under the engagement of groove 48, the drive pin 47, the vertical sleeve 50, and the cylindrical section 51 can move backward synchronously to reset. When the cylindrical section 51 moves backward to reset, under the cooperation of the opening groove 52 and the first long pin 33, that is, under the contact engagement of the opening groove 52, the first long pin 33 can rotate, that is, the arch seat 26, the main beam 21, etc. swing back to reset. When the cylindrical section 51 continues to move backward, causing the first long pin 33 to enter the inner wall of the centering groove 53 from the inner wall of the opening groove 52, at this time... The arch seat 26 and main beam 21 are corrected and reset, meaning the main beam 21 is in a horizontal state. When the cylindrical section 51 continues to move backward, the protrusion 54 can meet the second long pin 45. Under the contact engagement between the protrusion 54 and the second long pin 45, the second long pin 45 can move upward, that is, the corresponding guide plate 42 moves upward. When the guide plate 42 moves upward, it can cause the two locking plates 38 to move outward. When the locking plates 38 move outward and disengage from the wedge-shaped locking block 35, at this time... Driven by the long spring 34, the wedge-shaped locking block 35 can move upwards to reset, meaning the square slider 32, the first long pin 33, etc., move upwards and re-enter the arched seat 26. The locking teeth 24 then move downwards to engage with the outer gear ring 16 again. Thus, the device can automatically correct itself after a collision and reset to its initial position. Alternatively, an electric telescopic rod can be used to drive the vertical sleeve base 50 to move back and forth, replacing the cylindrical cam 46 and the drive pin 47. The electric telescopic rod is existing technology and will not be described further.

[0048] The swing cylinder 1 is provided with a swing shaft 5, and a swing arm 6 is fixedly connected to the outer surface of the swing shaft 5. A swing pin 11 is provided at the upper end of the swing arm 6. A spur gear 14 is fixedly connected to the outer surface of the drive shaft 15. A spur rack 13 that is slidably connected to the mounting platform 4 is meshed at the lower end of the spur gear 14. A key seat 10 is provided at the lower end of the spur rack 13. A long keyway 12 that cooperates with the swing pin 11 is provided on the key seat 10.

[0049] like Figures 2-5As shown, when the swing cylinder 1 is working, it can drive the swing shaft 5 to rotate in both directions. When the swing shaft 5 rotates, it can drive the swing arm 6 to swing in both directions, that is, the corresponding swing pin 11 swings back and forth left and right. The drive shaft 15 is rotatably connected to the mounting platform 4, and the rack 13 can slide left and right on one side end face of the mounting platform 4. When the rack 13 moves left and right, it can drive the rack 14 to rotate through meshing with the spur gear 14. Through the meshing of the swing pin 11 and the long keyway 12, when the swing pin 11 swings back and forth left and right, it can drive the key seat 10 and the rack 13 to move back and forth left and right, that is, it can also drive the spur gear 14, drive shaft 15, external gear ring 16, etc. to rotate back and forth, that is, the corresponding main beam 21 swings back and forth.

[0050] The inner wall of the swing arm 6 is provided with a rotatable threaded rod 8, and a threaded slider 7 is threadedly connected to the outer surface of the threaded rod 8. The threaded slider 7 is slidably connected to the inner wall of the swing arm 6, and the swing pin 11 is fixedly connected to the threaded slider 7.

[0051] like Figure 3 As shown, the threaded rod 8 is rotatably connected to the inner wall of the rocker arm 6, and the threaded slider 7 is slidably connected to the inner wall of the rocker arm 6. When the threaded rod 8 rotates, it can drive the threaded slider 7 and the rocker pin 11 to move upward or downward through the threaded connection with the threaded slider 7. When the rocker pin 11 moves, it can change the initial meshing position with the long keyway 12, that is, it can change the stroke of the rack 13. That is, when the rocker pin 11 moves downward, the rocker arm 6 and the rocker pin 11 swing back and forth, and the rack 13 can move back and forth in a small range. That is, the spur gear 14, drive shaft 15, external gear ring 16, etc. can rotate back and forth in a small range, that is, the main beam 21 swings left and right in a small range. Similarly, when the rocker pin 11 moves upward, the rocker arm 6... 6. When the swing pin 11 swings back and forth, the spur gear 14, drive shaft 15, and external gear ring 16 can rotate back and forth in a large range, that is, the main beam 21 swings left and right over a large range. The swing range of the main beam 21 can be adaptively adjusted according to the width of the tunnel, further improving safe operation. Under the threaded connection between the threaded rod 8 and the threaded slider 7, there is a self-locking function. That is, when the threaded rod 8 does not rotate, the threaded slider 7 and the swing pin 11 are in a fixed position on the swing arm 6, which can make the swing pin 11 stably mesh with the long keyway 12. The upper end of the swing arm 6 is equipped with an adjusting motor 9. The threaded rod 8 is fixed to the output end of the adjusting motor 9. The function of the adjusting motor 9 is to facilitate the rotation of the threaded rod 8. The motor is existing technology and will not be described in detail.

[0052] In use, the rotator 2 is first installed on the rock drilling rig. The rotator 2 drives the swing cylinder 1 and the main beam 21 to rotate as a whole, flexibly adjusting the working direction. When the swing cylinder 1 is working, it drives the swing shaft 5 and the swing arm 6 to swing. The swing pin 11 moves back and forth with the swing arm 6 and drives the rack 13 to move. Then, the spur gear 14 drives the drive shaft 15 and the outer gear ring 16 to rotate. Under normal conditions, the locking tooth 24 and the outer gear ring 16 are stably engaged. The drive shaft 15 can drive the arch seat 26 and the main beam 21 to rotate smoothly, realizing precise adjustment of the rock drilling angle. At the same time, the position of the threaded slider 7 and the swing pin 11 can be changed by adjusting the motor 9 to drive the threaded rod 8 to rotate, thereby adjusting the stroke of the rack 13. The swing range of the main beam 21 can be flexibly set according to the tunnel width to adapt to different working spaces and improve operational adaptability. The guard rods 20 on both sides of the main beam 21 remain extended under the action of the first spring 18, forming a front protection. When the main beam 21 collides with the tunnel wall during its rotation, the guard rods 20 are the first to contact the inner wall and are squeezed inward, causing the sleeve rod 22 and the wedge guide plate 42 to move inward synchronously. The wedge guide plate 42 pushes the fixing pin 25 and the locking tooth 24 to slide upward, so that the locking tooth 24 quickly disengages from the outer gear ring 16. At this time, the drive shaft 15 continues to rotate but will not cause the main beam 21 to continue to swing, achieving automatic stop at the moment of collision and effectively preventing the main beam 21 from making hard contact with the tunnel. The inner wall prevents piston rod bending, cylinder scoring, and structural breakage, fundamentally solving the problem of traditional hydraulic cylinders being easily damaged due to lack of protection. When the locking tooth 24 moves upward, it drives the square slider 32 and the wedge-shaped locking block to move downward through the rocker arm 27. The wedge-shaped locking block is unidirectionally limited by the locking plate 38 and the locking groove 39, keeping the locking tooth 24 in the disengaged state, ensuring the stable effectiveness of the collision protection and avoiding secondary impacts. After a collision, the control cylinder 1 drives the drive shaft 15 to reverse and reset. At this time, the locking tooth 24 is still in the disengaged state, the main beam 21 will not swing with the drive shaft 15, and the cylindrical cam 46 will reverse synchronously, through V The groove drives the vertical sleeve 50 and the cylindrical section 51 to move backward. The cylindrical section 51 drives the first long pin 33 to rotate and return to its original position through the opening groove 52 and the centering groove 53, so that the arch seat 26 and the main beam 21 are accurately corrected and reset to a horizontal state. The cylindrical section 51 continues to move backward, and the protrusion 54 pushes up the second long pin 45, driving the guide plate 42 to move upward and driving the locking plate 38 to move outward, releasing the limit on the wedge-shaped block. The square slider 32 resets upward under the action of the long spring 34, pushing the locking teeth 24 to re-engage with the outer gear ring 16, and the device quickly resumes normal operation. The entire reset process is completed automatically without manual intervention, with a rapid, accurate, and reliable response. This device integrates automatic anti-collision and automatic reset functions, does not occupy additional installation space, has strong compatibility, and can be directly adapted to existing rock drilling rigs. Active protection significantly reduces equipment damage and maintenance frequency, lowers spare parts and maintenance costs, avoids construction interruptions, ensures continuous and efficient tunnel construction, reduces the monitoring burden on operators, eliminates the risk of human error, and significantly improves the safety, stability, and convenience of the equipment in narrow and complex tunnel environments.

Claims

1. A universal swing cylinder for a rock drilling rig, comprising a swing cylinder (1), characterized in that: The swing cylinder (1) is provided with a mounting platform (4) on one side, and a drive shaft (15) is provided at the output end of the swing cylinder (1). An arched seat (26) is provided on the outer surface of the drive shaft (15). A main beam (21) is provided at the upper end of the arched seat (26). A movable protective rod (20) is provided on both sides of the main beam (21). A clutch mechanism is provided inside the arched seat (26). The clutch mechanism includes an outer gear ring (16) fixedly connected to the drive shaft (15). The clutch mechanism also includes a locking tooth (24) that cooperates with the outer gear ring (16). Under normal conditions, the locking tooth (24) meshes with the outer gear ring (16). When the swing cylinder (1) is working, it can drive the main beam (21) to flip. When the main beam (21) flips and collides with the inner wall of the tunnel, the protective rod (20) can move to disengage the locking tooth (24) from the outer gear ring (16).

2. The universal swing cylinder for a rock drilling rig as described in claim 1, characterized in that: The main beam (21) is fixedly connected to the front and rear ends of the side plate (17). The inner walls of both ends of the side plate (17) are slidably connected to the small slider (19). The inner walls of both ends of the side plate (17) are provided with a first spring (18) that cooperates with the small slider (19). The protective rod (20) is rotatably connected to the inner end of the corresponding two small sliders (19).

3. The universal swing cylinder for a rock drilling rig as described in claim 1, characterized in that: The locking teeth (24) are slidably connected to the inner wall of the arched seat (26). The inner wall of the locking teeth (24) is provided with a fixing pin (25). The middle part of the outer surface of the protective rod (20) is fitted with a sleeve rod (22). The inner end face of the two sleeve rods (22) is fixed with a wedge plate (23) that cooperates with the fixing pin (25).

4. The universal swing cylinder for a rock drilling rig as described in claim 1, characterized in that: The inner wall of the arched seat (26) is hinged with a rocker plate (27), and the inner wall of the arched seat (26) is also slidably connected with a square slider (32). The inner wall of the arched seat (26) is also provided with a long spring (34) that cooperates with the square slider (32). A first short pin (28) is fixedly connected to one end face of the locking tooth (24), and a second short pin (30) is fixedly connected to one end face of the square slider (32). A first keyway (29) and a second keyway (31) that cooperate with the first short pin (28) and the second short pin (30) are respectively opened on both sides of the rocker plate (27).

5. The universal swing cylinder for a rock drilling rig as described in claim 4, characterized in that: The inner wall of the square slider (32) is slidably connected to a wedge-shaped locking block (35). The inner wall of the square slider (32) is also provided with a second spring (37) that cooperates with the wedge-shaped locking block (35). The inner wall of the arched seat (26) is provided with two movable locking plates (38). The inner end face of the locking plates (38) is provided with a slot (39) that cooperates with the wedge-shaped locking block (35).

6. The universal swing cylinder for a rock drilling rig as described in claim 5, characterized in that: The locking plates (38) are all slidably connected to the inner wall of the arched seat (26). The inner wall of the arched seat (26) is also fixedly connected to the limiting rod (40). The locking plates (38) are all sleeved on the outer surface of the limiting rod (40). The outer surfaces of the limiting rod (40) are also sleeved with third springs (41) that cooperate with the locking plates (38). The lower end of one side of the locking plate (38) is fixedly connected to the driven pin (44). The guide plate (42) is slidably connected to one side of the arched seat (26). The guide plate (42) has two oblique keyways (43) that cooperate with the driven pin (44) in the middle. The lower end of the guide plate (42) is fixedly connected to a second long pin (45) that can move up and down.

7. A universal swing cylinder for a rock drilling rig as described in claim 6, characterized in that: An extension seat (3) is fixedly connected to one side end face of the mounting platform (4). A movable upright seat (50) is provided on the extension seat (3). A cylindrical cut surface (51) is provided at the upper end of the upright seat (50). A first long pin (33) is fixedly connected to the lower end surface of the square slider (32). An opening groove (52) and a centering groove (53) that cooperate with the first long pin (33) are opened on one side end face of the cylindrical cut surface (51). A protrusion (54) that cooperates with the second long pin (45) is also fixedly connected to the inner wall of the cylindrical cut surface (51).

8. The universal swing cylinder for a rock drilling rig as described in claim 7, characterized in that: The upper end of the extension seat (3) is provided with a long cam that can rotate. The upright seat (50) is sleeved on the outer surface of the long cam. The inner wall of the middle part of the upright seat (50) is fixed with a drive pin (47). The outer surface of the long cam is provided with a V-shaped groove (48) and an arc-shaped groove (49) that cooperate with the drive pin (47).

9. A universal swing cylinder for a rock drilling rig as described in claim 1, characterized in that: The swing cylinder (1) is provided with a swing shaft (5), a swing arm (6) is fixedly connected to the outer surface of the swing shaft (5), a swing pin (11) is provided at the upper end of the swing arm (6), a spur gear (14) is fixedly connected to the outer surface of the drive shaft (15), a spur rack (13) is meshed at the lower end of the spur gear (14) and is slidably connected to the mounting platform (4), a key seat (10) is provided at the lower end of the spur rack (13), and a long keyway (12) that cooperates with the swing pin (11) is provided on the key seat (10).

10. A universal swing cylinder for a rock drilling rig as described in claim 9, characterized in that: The inner wall of the swing arm (6) is provided with a rotatable threaded rod (8), and a threaded slider (7) is threadedly connected to the outer surface of the threaded rod (8). The threaded slider (7) is slidably connected to the inner wall of the swing arm (6), and the swing pin (11) is fixedly connected to the threaded slider (7).

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