Multifunctional fully automatic drilling rig

Abstract

The present invention discloses a multifunctional fully automatic drilling machine, comprising a control system and a folding lifting mechanism, wherein a rotating shaft is provided on the folding lifting mechanism, a linear feed device is installed on the rotating shaft, the linear feed device is provided with an automatic propulsion mechanism, a mounting seat and a power spring of the automatic propulsion mechanism are sleeved on a screw rod, the power spring is located between the screw rod nut and the mounting seat, at least one drilling mechanism is installed on the mounting seat, the screw rod driving mechanism is used to drive the screw rod nut to drive the drilling mechanism to move forward and backward through the power spring; the automatic propulsion mechanism is used to detect the compression amount of the power spring, if the power spring is compressed to a preset stop position, a signal is sent to the control system to control the screw rod driving mechanism to stop the action, and the drilling mechanism is driven forward by the elastic force of the power spring; if the power spring rebounds to a preset start position, a signal is sent to the control system to control the screw rod driving mechanism to start the action. The present invention has a simple structure, is widely applicable, and can drill holes more accurately.

Description

Technical Field

[0001] The invention relates to the technical field of drilling machinery, in particular to a multifunctional fully automatic drilling rig. Background Art

[0002] With the large-scale construction of infrastructure in my country, the construction volume of underground spaces such as subway tunnels is increasing. The current construction technology is still relatively backward. In the process of tunneling and excavation, blasting was used in the past, which not only destroyed the original geological structure, but also caused great safety hazards after blasting, was not environmentally friendly, and had a wide impact of construction vibration. Therefore, drilling rigs were used for excavation, but the existing drilling rigs had the following problems:

[0003] 1) Manual drilling rigs have slow drilling speed, high labor intensity, and huge labor costs.

[0004] 2) Ordinary drilling rigs cannot adjust the operating angle during operation, cannot meet the needs of all-round drilling, and the holes drilled cannot be cross-drilled to form an open surface. During the drilling process, the high-speed operation of the motor causes the entire drilling rig to vibrate and deviate, which can easily cause the drill head to deviate and fail to locate and drill, and cause damage to the drill bit. In addition, due to the complex environment of the construction site, most of the ground is uneven, which causes the drilling rig to be unable to remain stable on the ground, thereby affecting the positioning of the drilling position.

[0005] 3) Rotary rolling drills can only be used for loose rocks, and cannot be used for hard rocks such as granite. Summary of the invention

[0006] The purpose of the present invention is to overcome the prior art and provide a multifunctional fully automatic drilling rig with simple structure, wide application range and high efficiency.

[0007] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0008] A multifunctional fully automatic drilling machine, comprising a walking mechanism and a control system, wherein a chassis is provided on the walking mechanism, a folding lifting mechanism is provided on the chassis, at least two rotating shafts for adjusting the drilling position are provided on the free end of the folding lifting mechanism, each rotating shaft is provided with a rotating drive mechanism for driving the rotating shaft to rotate, each rotating shaft is installed with a linear feed device, the linear feed device comprises a screw rod, a screw rod nut, a screw rod driving mechanism and an automatic propulsion mechanism, the automatic propulsion mechanism comprises a mounting seat, a power spring and a sensing device, the mounting seat and the power spring are both sleeved on the screw rod, the screw rod nut and the power spring are arranged in the mounting seat, and the power spring is located between the screw rod nut and the mounting seat At least one drilling mechanism is installed on the mounting seat, and the screw drive mechanism is used to drive the screw nut to squeeze the power spring and drive the drilling mechanism to move forward and backward through the power spring; the screw drive mechanism and the sensing device are respectively connected to the control system, and the automatic propulsion mechanism is used to monitor the compression amount of the power spring through the sensing device, and if the compression amount of the power spring reaches a preset stop position, a signal is sent to the control system, and the screw drive mechanism is controlled to stop the action through the control system, and the drilling mechanism is driven forward by the elastic force of the power spring; if the power spring rebounds to a preset starting position, a signal is sent to the control system, and the screw drive mechanism is controlled to start the action through the control system.

[0009] The sensing device includes an on-off switch and a linkage rod, one end of the linkage rod is fixedly connected to the lead screw nut, and the other end extends out of the mounting seat, the on-off switch is arranged on the mounting seat, and the linkage rod is used to contact the on-off switch when the compression amount of the power spring reaches the preset start and stop positions, so as to start or stop the on-off switch; the on-off switch is connected to the control system, the on-off switch is used to send a signal to the control system, and the control system is used to receive the signal of the on-off switch and control the lead screw drive mechanism to start or stop the action according to the signal.

[0010] The linear feed device is also provided with a first limit device for controlling the drilling depth, the first limit device includes a first limit switch and a first limit rod, the first limit rod is arranged along the length direction of the screw rod, the first limit rod is slidably installed on the mounting seat through a second sliding sleeve, the first limit switch is connected to the control system, and the control system is used to control the screw rod drive mechanism to start or stop the action according to the signal received from the first limit switch.

[0011] The axis of the drill bit of the drilling mechanism intersects with the center line of the rotating shaft to form an angle.

[0012] At least two radius drive mechanisms are provided between the rotating shaft and the linear feed device, and each radius drive mechanism is connected to the control system respectively. The control system is used to control the action of each radius drive mechanism, and the at least two radius drive mechanisms are used to adjust the distance and angle between the linear feed device and the rotating shaft.

[0013] A synchronous telescopic rod is further provided between the rotating shaft and the linear feeding device, and a locking screw is provided on the synchronous telescopic rod, and the locking screw is used to lock the synchronous telescopic rod.

[0014] It also includes a telescopic stabilizing device for pressing against the top of the drill hole, the telescopic stabilizing device includes a top plate and a top plate driving mechanism, the top plate driving mechanism is installed on the folding and lifting mechanism, the top plate driving mechanism is connected to the control system, and the movement of the top plate driving mechanism is controlled by the control system.

[0015] The free end of the folding and lifting mechanism is also provided with a telescopic support frame for pressing against the working surface, the telescopic support frame includes a support driving mechanism, at least two support rods and a cross beam, the support rods are respectively hinged on the cross beam, the fixed end of the support driving mechanism is installed on the folding and lifting mechanism, the working end of the support driving mechanism is connected to the cross beam, the support driving mechanism is connected to a control system, and the control system is used to control the action of the support driving mechanism.

[0016] It also includes a hydraulic system, the folding and lifting mechanism includes a first hydraulic cylinder, a second hydraulic cylinder, a first folding arm, a second folding arm, a lifting plate, and a lifting drive mechanism, the fixed end of the first hydraulic cylinder is hinged on the chassis, and the piston rod of the first hydraulic cylinder is connected to the first folding arm; a slide groove is provided on the first folding arm, and the lifting plate is arranged on the slide groove of the first folding arm, the lifting drive mechanism is connected to the control system, and the movement of the lifting drive mechanism is controlled by the control system, and the lifting drive mechanism is used to drive the lifting plate to slide up and down along the first folding arm; the fixed end of the second hydraulic cylinder is hinged on the lifting plate, the piston rod of the second hydraulic cylinder is connected to the second folding arm, and the two sides of the second folding arm are respectively connected to the rotating shaft through the first sliding sleeve; the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the hydraulic system, and the hydraulic system is connected to the control system, and the control system is used to control the movement of the first hydraulic cylinder and the second hydraulic cylinder respectively through the hydraulic system.

[0017] The first folding arm is composed of a first telescopic cylinder and a second telescopic cylinder, the first telescopic cylinder and the second telescopic cylinder are slidably matched, the piston rod of the first hydraulic cylinder is connected to the first telescopic cylinder, the first telescopic cylinder is provided with a third hydraulic cylinder, the piston rod of the third hydraulic cylinder is connected to the second telescopic cylinder, the third hydraulic cylinder is connected to the control system via the hydraulic system, the control system is used to control the action of the third hydraulic cylinder, and the third hydraulic cylinder is used to drive the second telescopic cylinder to move up and down along the first telescopic cylinder; a slide groove is provided on the second telescopic cylinder, and the second telescopic cylinder and the lifting plate are slidably matched.

[0018] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] The structure of the present invention is simple. The folding lifting mechanism can not only adjust the height of the drilling mechanism, but also reduce the occupied space of the entire drilling rig after folding, which is convenient for transportation. A linear feed device is installed on the rotating shaft. The linear feed device is installed with at least one drilling mechanism through a mounting seat. The drilling mechanism on the linear feed device is driven to rotate by each rotating shaft. The angle of the drilling mechanism can be adjusted arbitrarily according to the demand, which meets the demand of all-round drilling and realizes cross drilling, so as to facilitate the formation of an open surface. When the drill bit of the drilling mechanism of the linear feed device encounters resistance, the screw nut compresses the power spring, and the sensing device detects the compression amount of the power spring. If the preset stop position is reached, the screw drive mechanism is stopped by the control system, and the drilling mechanism is driven forward by the elastic force of the power spring. If the preset start position is reached, the screw drive mechanism is started by the control system. The screw drive mechanism of the linear feed device is started and stopped by the automatic propulsion mechanism, and automatic excavation can be performed for rocks of different materials, thereby protecting the drill bit of the drilling mechanism, extending the service life of the drill bit, and reducing the equipment cost. Therefore, the present invention solves the drawback of not being able to drill in all directions, reduces labor intensity, reduces labor costs, reduces safety hazards, is environmentally friendly and improves work efficiency. It is also suitable for drilling various irregular-shaped working surfaces such as round, arched, square, etc. in various trenchless projects and tunnel projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of specific embodiment 1;

[0021] Figure 2 It is a structural schematic diagram of the unfolded state of specific embodiment 1;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 A schematic diagram of the structure of a first limit device provided on the central linear feed device;

[0024] Figure 5 It is a structural schematic diagram of the action of the radius drive mechanism in specific embodiment 1;

[0025] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0026] Figure 7 Schematic diagram of the structure of 5 telescopic support frames;

[0027] Figure 8 A schematic diagram of the structure of installing two drilling mechanisms in specific embodiment 1;

[0028] Fig. 9 It is a structural schematic diagram of specific embodiment 2;

[0029] Fig.10 It is a structural schematic diagram of specific embodiment 3.

[0030] In the figure: 1 is a walking mechanism, 2 is a drilling mechanism, 2-1 is a drill drive motor, 2-2 is a reducer, 2-3 is a drill, 3 is a hydraulic system, 4 is a control system, 5 is a chassis, 6 is a telescopic stabilizing foot, 7 is a folding lifting mechanism, 7-1 is a first hydraulic cylinder, 7-2 is a second hydraulic cylinder, 7-3 is a first folding arm, 7-3-1 is a first telescopic cylinder, 7-3-2 is a second telescopic cylinder, 7-4 is a second folding arm, 7-5 is a lifting plate, 7-6 is a lifting drive mechanism, 8 is a support table, 9 is a rotating shaft, 10 is a rotating drive mechanism, 10-1 is a second slewing bearing, 10-2 is a second hydraulic motor, 11 is a linear feed device, 11-1 is a screw rod, 1 1-2 is a screw nut, 11-3 is a guide rail, 11-4 is a bracket, 12 is an automatic propulsion mechanism, 12-1 is an on-off switch, 12-2 is a linkage rod, 12-3 is a power spring, 12-4 is a mounting seat, 13 is a first limit device, 13-1 is a first limit switch, 13-2 is a first limit rod, 14 is a second limit device, 14-1 is a stopper, 14-2 is a limit block, 15 is a third limit device, 16 is a telescopic support frame, 16-1 is a bracket driving mechanism, 16-2 is a support rod, 16-3 is a crossbeam, 16-4 is a bolt, 17 is a telescopic stabilizing device, 18 is a radius driving mechanism, 19 is a synchronous telescopic rod, and 19-1 is a handle. DETAILED DESCRIPTION Specific embodiment 1

[0032] See also Figures 1 to 8As shown, a multifunctional fully automatic drilling rig includes a walking mechanism 1, at least two drilling mechanisms 2, a hydraulic system 3 and a control system 4. The walking mechanism 1 is a vehicle-mounted self-propelled mechanism or a crawler self-propelled mechanism. In this specific embodiment: the walking mechanism 1 is a crawler self-propelled mechanism to ensure that the drilling rig can be used in various working environments. The walking mechanism 1 is provided with a chassis 5, which is fixedly mounted on the walking mechanism 1. The lower end of the chassis 5 is provided with a telescopic stabilizing foot 6. When the drilling rig is walking, the stabilizing foot can be tightened. The telescopic stabilizing foot 6 uses a seventh hydraulic cylinder, and the seventh hydraulic cylinder is connected to the hydraulic system 3. The chassis 5 is provided with a folding lifting mechanism 7 and a support platform 8. In this specific embodiment, the folding lifting mechanism 7 includes a first hydraulic cylinder 7-1, a second hydraulic cylinder 7-2, a first folding arm 7-3, a second folding arm 7-4, a lifting plate 7-5, and a lifting drive mechanism 7-6. The first folding arm 7-3 and the second folding arm 7-4 are both provided with connecting ears in the middle. The first hydraulic cylinder 7-1 is tiltedly arranged on the chassis 5. The fixed end of the first hydraulic cylinder 7-1 is hinged on the chassis 5 through a cross seat. The piston rod of the first hydraulic cylinder 7-1 is fixedly connected to the connecting ear of the first folding arm 7-3. The first folding arm 7-3 is provided with a slide groove, and the inner side wall of the slide groove is provided with a slide tooth. The lifting plate 7-5 is arranged on the slide groove. The lifting drive mechanism 7-6 is connected to the control system, and the lifting mechanism is controlled by the control system. The lifting drive mechanism 7-6 is used to drive the lifting plate 7-5 to slide up and down along the slide groove of the first folding arm 7-3. In this specific embodiment: the lifting drive mechanism 7-6 includes a first hydraulic motor, a first slewing bearing, a support seat and a transmission shaft, the first slewing bearing is fixedly mounted on the lifting plate 7-5 through the support seat, the transmission shaft is arranged in the support seat, the upper end of the transmission shaft is meshed with the inner ring of the first slewing bearing, the lower end of the transmission shaft is provided with a gear, the gear is meshed with the sliding teeth of the slide groove, the first hydraulic motor is meshed with the outer ring of the first slewing bearing, the first hydraulic motor is connected to the control system, the action of the first hydraulic motor is controlled by the control system, the first hydraulic motor is used to drive the first slewing bearing to drive the lifting plate 7-5 to move up and down along the first folding arm 7-3. The fixed end of the second hydraulic cylinder 7-2 is hinged on the lifting plate 7-5 through the cross seat, and the piston rod of the second hydraulic cylinder 7-2 is fixedly connected to the connecting ear of the second folding arm 7-4. The first hydraulic cylinder 7-1 and the second hydraulic cylinder 7-2 are respectively connected to the hydraulic system 3, and the control system 4 controls the movement of the first hydraulic cylinder 7-1 and the second hydraulic cylinder 7-2 through the hydraulic system 3, thereby realizing the folding or extension of the first folding arm 7-3 and the second folding arm 7-4.The folding lifting mechanism 7 has a simple structure, and the two folding arms are folded by two hydraulic cylinders, and the second hydraulic cylinder 7-2 is arranged on the lifting plate 7-5. By adjusting the position of the lifting plate, the height of the second folding arm 7-4 can also be adjusted, thereby expanding the height adjustable range of the drilling mechanism 2. The first folding arm 7-3 is in an inclined state after being folded, and the upper end surface of the support platform 8 is an inclined surface, which is used to support the folding lifting mechanism 7 when folded, and the support platform 8 prevents the folding lifting mechanism 7 from shaking during the moving process.

[0033] The free end of the folding and lifting mechanism 7 is provided with at least two rotating shafts 9 for adjusting the drilling position. In this embodiment, the free end of the folding and lifting mechanism 7 is provided with two rotating shafts 9 for adjusting the drilling position. The free end of the folding and lifting mechanism 7 is located at the second folding arm 7-4, and the second folding arm 7-4 is horizontally arranged. The two sides of the second folding arm 7-4 are respectively connected to the two rotating shafts 9 through the first sliding sleeve, and the two rotating shafts 9 are respectively perpendicular to the second folding arm 7-4 to form an H-shaped structure. Each rotating shaft 9 is provided with a rotating drive mechanism 10 for driving the rotating shaft to rotate, and the rotating drive mechanism 10 includes a second slewing bearing 10-1 and a second hydraulic motor 10-2. The second slewing bearing 10-1 is sleeved on the end of the rotating shaft 9. The rotating shaft 9 is provided with rotating teeth meshing with the inner gear ring of the second slewing bearing 10-1. The second hydraulic motor 10-2 meshes with the outer gear ring of the second slewing bearing 10-1. The second hydraulic motor 10-2 is connected to the hydraulic system 3. The second hydraulic motor 10-2 is used to drive the second slewing bearing 10-1 and the rotating shaft 9 to rotate.

[0034] A linear feed device 11 is installed on both rotating shafts 9, and the linear feed device 11 includes a bracket 11-4, a screw 11-1, a screw nut 11-2, a guide rail 11-3 and a screw drive mechanism. The screw 11-1 is a ball screw, and the screw 11-1 and the guide rail 11-3 are installed in parallel on the bracket 11-4. An automatic propulsion mechanism 12 is provided on the linear feed device 11, and the automatic propulsion mechanism 12 includes a mounting seat 12-4, a power spring 12-3 and a sensing device. The mounting seat 12-4 is provided with at least two front and rear baffles. The mounting seat 12-4 and the power spring 12-3 are both sleeved on the screw 11-1, the screw nut 11-2 and the power spring 12-3 are arranged in the mounting seat 12-4, and the power spring 12-3 is located between the screw nut 11-2 and the mounting seat 12-4, one side of the mounting seat 12-4 is provided with a guide block that slides with the guide rail 11-3, the screw drive mechanism is connected to one end of the screw 11-1, the screw drive mechanism is connected to the control system 4, the screw drive mechanism is used to drive the screw nut 11-2 to squeeze the power spring 12-3 and drive the mounting seat 12-4 to move forward and backward through the power spring 12-3. In this specific embodiment, the screw drive mechanism adopts a third hydraulic motor, the third hydraulic motor is connected to the hydraulic system, and the control system 4 controls the action of the third hydraulic motor through the hydraulic system 3. The sensing device is connected to the control system, and the automatic propulsion mechanism 12 is used to detect the compression amount of the power spring 12-3 through the sensing device. If the compression amount of the power spring reaches a preset stop position, a signal is sent to the control system 4, and the control system 4 controls the screw drive mechanism to stop the action, and the elastic force of the power spring 12-3 drives the drilling mechanism to move forward; if the power spring 12-3 rebounds to the preset starting position, a signal is sent to the control system, and the control system controls the screw drive mechanism to start the action.

[0035] The sensing device includes an on-off switch 12-1 and a linkage rod 12-2. One end of the linkage rod 12-2 is fixedly connected to the screw nut 11-2, and the other end of the linkage rod 12-2 extends out of the mounting seat 12-4. The on-off switch 12-1 is arranged on an outer side wall of the mounting seat 12-4. The on-off switch 12-1 is a normally open normally closed switch. A contactor is arranged on the normally open normally closed switch. The contactor is composed of two mutually perpendicular contacts. The linkage rod 12-2 contacts with any contact of the contactor to start or shut down the normally open normally closed switch. In this specific embodiment: the normally open normally closed switch adopts a CWLCA32-42 / M double-circuit limit switch. When the drilling mechanism encounters resistance, the screw nut compresses the power spring 12-3, and the linkage rod moves with the screw nut. The linkage rod 12-2 is used to contact one contact of the on-off switch 12-1 to start the on-off switch when the compression amount of the power spring 12-3 reaches the preset stop position; when the power spring 12-3 rebounds to the preset start position, the linkage rod 12-2 contacts the other contact of the on-off switch 12-1 to turn off the on-off switch; the on-off switch 12-1 is connected to the control system 4, and the on-off switch 12-1 is used to send a signal to the control system 4. The control system 4 is used to receive the signal of the on-off switch 12-1, and control the screw drive mechanism to start or stop according to the signal. The sensing device can also be replaced by two sensors, and the two sensors are respectively connected to the control system. The two sensors are used to detect that when the power spring is stretched to the preset start and stop positions, the screw drive mechanism is started or stopped through the control system.

[0036] At least one drilling mechanism 2 is provided on the mounting seat 12-4. The drilling mechanism 2 adopts a water-mill drilling mechanism, which includes a drill drive motor 2-1, a reducer 2-2 and a drill 2-3. The drill 2-3 adopts a drill barrel. The drill drive motor 2-1 is connected to the control system 4. In this specific embodiment: two drilling mechanisms 2 are installed on the mounting seat 12-4, and the two drilling mechanisms 2 are respectively located on the upper and lower sides of the mounting seat 12-4. The two drilling mechanisms 2 are installed on the linear feed device 11 through the mounting seat 12-4. One linear feed device 11 drives the two drilling mechanisms to operate simultaneously, thereby improving the drilling efficiency.

[0037] At least two radius drive mechanisms 18 are provided between the rotating shaft 9 and the linear feed device 11. The radius drive mechanisms are respectively located at the front and rear ends of the rotating shaft. One end of the radius drive mechanism 18 is fixedly mounted on the rotating shaft 9, and the other end is fixedly mounted on the bracket 11-4 of the linear feed device 11. The radius drive mechanism 18 can adopt a cylinder and a hydraulic cylinder. Each radius drive mechanism is respectively connected to the control system. The control system is used to control the action of each radius drive mechanism. The at least two radius drive mechanisms are used to adjust the distance and angle between the linear feed device 11 and the rotating shaft. In this specific embodiment, two radius drive mechanisms 18 are provided between the rotating shaft 9 and the linear feed device 11. The two radius drive mechanisms are respectively located at the front and rear ends of the rotating shaft. The radius drive mechanism 18 adopts a sixth hydraulic cylinder, which is connected to the hydraulic system. The distance between the linear feed device 11 and the rotating shaft is used to adjust the radius range of the drilling mechanism, so as to meet the requirements of drilling tunnels of different sizes. The angle is that the linear feed device 11 is set at an angle by adjusting the different driving forces of the radius drive mechanisms at the front and rear ends of the rotating shaft, so that the axis of the drill bit of the drilling mechanism 2 intersects with the center line of the rotating shaft 9 to form an angle. The angle makes the drill bit set at an angle, and under the drive of the linear feed device 11, the drill bit can process a hole with an inclined angle, so that the drilling mechanism can continue to dig forward.

[0038] Furthermore, the linear feed device 11 is also provided with a first limit device 13 for controlling the drilling depth. The first limit device 13 is arranged on the mounting seat 12-4. The first limit device 13 includes a first limit switch 13-1 and a first limit rod 13-2. The first limit rod 13-2 is slidably mounted on the mounting seat 12-4 through a second sleeve. The first limit rod 13-2 is arranged along the length direction of the screw rod 11-1. The first limit switch 13-1 is connected to the control system 4. The control system is used to control the screw drive mechanism to start or stop the action according to the received signal of the first limit switch. When the first limit switch 13-1 and the first limit rod 13-2 contact to start the first limit device 13, the first limit switch 13-1 sends a signal. In this embodiment, the first limit switch 13-1 is a travel switch. The first limit device can ensure that the depth of each drill hole is the same, ensuring the flatness of the entire drilled section.

[0039] Furthermore, the front and rear ends of the linear feed device 11 are respectively provided with a second limit device 14 and a third limit device 15 for limiting the drilling mechanism 2. The second limit device 14 includes a stopper 14-1, a stopper 14-2 and a second limit switch. In this specific embodiment, the stopper 14-1 is arranged at the front end of the bracket 11-4 of the linear feed device 11, and the stopper 14-2 is fixedly arranged on the first limit rod 13-2 of the first limit device 13. Since the stopper 14-2 is fixedly arranged on the first limit rod 13-2, the first limit switch 13-1 of the first limit device can be used, so the second limit switch is omitted here. When the limit block 14-2 contacts the stop block 14-1, the limit block 14-2 and the first limit rod 13-2 stop moving, and the first limit switch 13-1 continues to move forward with the mounting seat 12-4. The first limit rod 13-2 contacts the first limit switch 13-1 to start the second limit device, and the control system 4 controls the screw drive mechanism to stop moving, preventing the drilling mechanism from continuing to move forward and protecting the drilling mechanism. The first limit device and the second limit device use a limit switch to achieve limit control, reducing the setting of limit switches and reducing costs.

[0040] The third limit device 15 includes a third limit switch, which is arranged at the rear end of the bracket 11-4 of the linear feed device 11, and is connected to the control system. The third limit device 15 is used to start the third limit device by contacting the mounting seat 12-4 through the third limit switch, and the control system is used to control the screw drive mechanism to start or stop the action according to the signal received from the third limit switch. The drilling mechanism on the mounting seat is prevented from continuing to retreat, thereby protecting the drilling mechanism. In addition, the present structure utilizes the mounting seat 12-4 to contact the third limit switch, omits the setting of the limit block, simplifies the structure, and reduces the cost.

[0041] Furthermore, the free end of the folding lifting mechanism 7 is also provided with a telescopic support frame 16 for pressing against the working surface, and the telescopic support frame 16 includes a support driving mechanism 16-1, two support rods 16-2 and a crossbeam 16-3 for connecting the two support rods, and the two support rods 16-2 are respectively provided with a first strip-shaped adjustment hole, and the two sides of the crossbeam 16-3 are respectively provided with a second strip-shaped adjustment hole, and the two support rods 16-2 are respectively hinged at the two ends of the crossbeam 16-3 by bolts 16-4 in coordination with the first strip-shaped adjustment hole and the second strip-shaped adjustment hole. The fixed end of the support driving mechanism 16-1 is installed on the second folding arm 7-4 of the folding lifting mechanism 7, and the working end of the support driving mechanism 16-1 is fixedly connected to the crossbeam 16-3, and the support driving mechanism 16-1 is connected to the control system 4, and the control system 4 drives the support driving mechanism 16-1 to move. The support driving mechanism 16-1 can be a cylinder or a hydraulic cylinder. In this specific embodiment, the support driving mechanism 16-1 adopts a fourth hydraulic cylinder, which is connected to the hydraulic system, and the control system controls the action of the fourth hydraulic cylinder through the hydraulic system. The telescopic support frame 16 is pressed against the working surface, preventing the entire drilling rig from shaking when the drilling mechanism is drilling, making the entire drilling rig more stable, and at the same time avoiding the drill bit of the drilling mechanism from deviating from the set position, thereby improving the drilling accuracy. The two support rods 16-2 are hinged on the crossbeam 16-3 through the first strip adjustment hole and the second strip adjustment hole. When encountering an uneven working surface, the length of the two support rods 16-2 can be adjusted to ensure that the two support rods 16-2 can be pressed against the uneven working surface. The two support rods 16-2 are provided with anti-skid rubber heads, which can prevent the support rods 16-2 from slipping when contacting the working surface. Furthermore, the rotating shaft 9 is a hollow structure, and the two support rods 16 - 2 of the telescopic support frame 16 are arranged in the hollow structure of the rotating shaft 9 , which reduces the occupied space of the entire drilling rig and facilitates transportation.

[0042] Furthermore, it also includes a telescopic stabilizer 17 for pressing against the top of the borehole, the telescopic stabilizer 17 includes a top plate and a top plate driving mechanism, the top plate is installed on the top plate driving mechanism, the top plate driving mechanism is arranged on the folding lifting mechanism, the top plate driving mechanism is connected to the control system, and the top plate driving mechanism is controlled by the control system. The top plate driving mechanism can adopt a cylinder or a hydraulic cylinder. In this specific embodiment: the top plate driving mechanism adopts a fifth hydraulic cylinder, the first folding arm of the folding lifting mechanism is a hollow structure, and the fifth hydraulic cylinder is fixedly installed in the first folding arm of the folding lifting mechanism, and the layout is reasonable to reduce the volume of the drilling rig. The telescopic stabilizer 17 is used to press against the top surface of the tunnel, which reduces the shaking of the entire drilling rig caused by the drilling mechanism working, thereby stabilizing the entire drilling rig. The top plate is provided with friction teeth, and the friction force with the top of the tunnel is increased by the friction teeth, so that the telescopic stabilizer can better contact with the top surface of the tunnel and stabilize the entire drilling rig.

[0043] The liquid system 3 includes an oil tank, a hydraulic pump, a plurality of solenoid valves and a cooler. The cooler is used to cool the hydraulic oil. The hydraulic oil in the hydraulic system must first pass through the cooler for heat dissipation before returning to the oil tank to prevent the hydraulic oil temperature from being too high and causing the system to fail, thereby ensuring the normal operation of the drilling rig. The plurality of solenoid valves of the hydraulic system 3 are respectively connected to the control system 4, and the control system 4 controls the hydraulic system through the solenoid valves. The rotary drive mechanism, the lifting drive mechanism and the screw drive mechanism of the present invention all adopt hydraulic motors, so that the entire drilling rig adopts hydraulic control, reduces the setting of the electronic control device, makes the control system simpler, and reduces the cost.

[0044] Working principle of the present invention:

[0045] First, the height of the two drilling mechanisms 2 is adjusted by unfolding the folding lifting mechanism 7, and the drilling mechanism 2 is driven to rotate and adjust the drilling position of each drilling mechanism 2 by each rotating shaft 9, and then the screw drive mechanism of the linear feed device 11 drives the drilling mechanism 2 forward to send the drill bit to the working position, and finally the drill bit is driven to work by starting the drill drive motor of the drilling mechanism 2. During operation, the drilling mechanism 2 is pressed against the working surface by the automatic propulsion mechanism, the drilling mechanism 2 and the mounting seat 12-4 stop moving, and the screw nut 11-2 squeezes the power spring 12-3. When the screw nut 11-2 drives the linkage rod 12-2 to move to the preset stop position, the linkage rod 12-2 contacts the on-off switch 12-1, starts the on-off switch 12-1, and transmits the signal to the control system 4, and the control system 4 controls the screw drive mechanism to stop the action through the hydraulic system 3. The elastic force of the power spring 12-3 is used to drive the drilling mechanism to move forward. When the power spring 12-3 rebounds and drives the screw nut 11-2 and the linkage rod 12-2 to move back to the preset starting position, the on-off switch 12-1 is turned off and a signal is sent to the control system. The control system 4 starts the screw drive mechanism through the hydraulic system 3, thereby driving the drilling mechanism to continue to move forward. During the working process of the drilling mechanism, the power spring expansion and contraction amount is continuously detected by the sensing device, thereby controlling the screw drive mechanism to start or stop the action, and the elastic force of the power spring is used to realize the automatic advancement of the drilling mechanism 2, thereby protecting the drill bit of the drilling mechanism 2 and extending the service life of the drill bit.

[0046] When the drilling mechanism 2 advances to the set depth, the first limit rod 13-2 contacts the working surface and stops moving; while the screw drive mechanism still drives the mounting seat and the first limit switch 13-1 to move forward. When the first limit rod 13-2 contacts the first limit switch 13-1, the first limit device is started, and the control system controls the screw drive mechanism to stop moving forward according to the received first limit switch signal, and adjusts the screw drive mechanism to drive the drilling mechanism to retreat to a certain position and then stop, until the rotating shaft 9 rotates to adjust the next position of the drilling mechanism, and the control system 4 restarts the screw drive mechanism and the drilling mechanism 2. Specific embodiment 2:

[0048] See also Fig. 9 As shown, the feature of this embodiment is that: the first folding arm 7-3 is composed of a first telescopic cylinder 7-3-1 and a second telescopic cylinder 7-3-2, the first telescopic cylinder 7-3-1 and the second telescopic cylinder 7-3-2 are square cylinders, the first telescopic cylinder 7-3-1 and the second telescopic cylinder 7-3-2 are slidingly matched, the piston rod of the first hydraulic cylinder 7-1 is connected to the first telescopic cylinder, a third hydraulic cylinder is provided on the first telescopic cylinder 7-3-1, the piston rod of the third hydraulic cylinder is connected to the second telescopic cylinder 7-3-2, the third hydraulic cylinder is connected to the hydraulic system, the control system 4 controls the action of the third hydraulic cylinder through the hydraulic system, the third hydraulic cylinder is used to drive the second telescopic cylinder 7-3-2 to move up and down along the first telescopic cylinder 7-3-1, a slide groove is provided on the second telescopic cylinder 7-3-2, and the second telescopic cylinder 7-3-2 is slidingly matched with the lifting plate 7-5. The first folding arm 7-3 adopts a first telescopic cylinder 7-3-1 and a second telescopic cylinder 7-3-2 that slide together, which extends the length of the first folding arm 7-3, so that the folding lifting mechanism 7 can further adjust the height of the drilling mechanism 2, thereby expanding the use range of the drilling machine. Other structures are the same as those in the specific embodiment 1, so this embodiment is omitted here. Specific embodiment 3:

[0050] See also Fig.10As shown, the feature of this embodiment is that a synchronous telescopic rod 19 is also provided between the rotating shaft 7 and the linear feed device 11, and the synchronous telescopic rod 19 includes a sleeve and an inner screw. The sleeve is rectangular, and the sleeve is fixedly mounted on the rotating shaft. One end of the inner screw is arranged in the sleeve, and the other end of the inner screw is connected to the bracket of the linear feed device 11. The sleeve is provided with a mounting hole, and a nut is fixed to the mounting hole. The synchronous telescopic rod 19 is provided with a locking screw for locking the inner screw of the synchronous telescopic rod 19, and the locking screw is provided with a handle 19-1. The locking screw cooperates with the nut, and the locking screw is inserted into the sleeve through the nut to tighten the inner screw. The number of synchronous telescopic rods corresponds to the number of radius drive mechanisms, and the synchronous telescopic rod is arranged below the radius drive mechanism. The synchronous telescopic rod and the radius drive mechanism are synchronously telescoped, and the stability of the rotating shaft and the linear feed device 11 is enhanced by the synchronous telescopic rod. Other structures are the same as those in specific embodiment 1 or specific embodiment 2, so this embodiment is omitted here.

Claims

1. A multifunctional fully automatic drilling rig, characterized in that: It includes a walking mechanism and a control system, the walking mechanism is provided with a chassis, the chassis is provided with a folding lifting mechanism, the free end of the folding lifting mechanism is provided with at least two rotating shafts for adjusting the drilling position, each rotating shaft is provided with a rotating drive mechanism for driving the rotating shaft to rotate, each rotating shaft is installed with a linear feeding device, the linear feeding device includes a screw rod, a screw rod nut, a screw rod driving mechanism and an automatic propulsion mechanism, the automatic propulsion mechanism includes a mounting seat, a power spring and a sensing device, the mounting seat and the power spring are both sleeved on the screw rod, the screw rod nut and the power spring are arranged in the mounting seat, and the power spring is located between the screw rod nut and the mounting seat, the mounting At least one drilling mechanism is installed on the seat, and the screw drive mechanism is used to drive the screw nut to squeeze the power spring and drive the drilling mechanism to move forward and backward through the power spring; the screw drive mechanism and the sensing device are respectively connected to the control system, and the automatic propulsion mechanism is used to monitor the compression amount of the power spring through the sensing device, and send a signal to the control system when the compression amount of the power spring reaches a preset stop position, and control the screw drive mechanism to stop the action through the control system, and drive the drilling mechanism to move forward through the elastic force of the power spring; if the power spring rebounds to a preset start position, send a signal to the control system, and control the screw drive mechanism to start the action through the control system; The sensing device comprises an on-off switch and a linkage rod, one end of the linkage rod is fixedly connected to the lead screw nut, and the other end extends out of the mounting seat, the on-off switch is arranged on the mounting seat, and the linkage rod is used to contact the on-off switch when the compression amount of the power spring reaches the preset start and stop positions, so as to start or shut down the on-off switch; The on-off switch is connected to the control system, the on-off switch is used to send a signal to the control system, the control system is used to receive the signal of the on-off switch, and control the screw drive mechanism to start or stop the action according to the signal; The linear feed device is also provided with a first limit device for controlling the drilling depth, the first limit device includes a first limit switch and a first limit rod, the first limit rod is arranged along the length direction of the screw rod, the first limit rod is slidably installed on the mounting seat through a second sliding sleeve, the first limit switch is connected to the control system, and the control system is used to control the screw rod drive mechanism to start or stop the action according to the signal received from the first limit switch.

2. The multifunctional fully automatic drilling rig according to claim 1, characterized in that: The axis of the drill bit of the drilling mechanism intersects with the center line of the rotating shaft to form an angle.

3. The multifunctional fully automatic drilling rig according to claim 1 or 2, characterized in that: At least two radius drive mechanisms are provided between the rotating shaft and the linear feed device, and each radius drive mechanism is connected to the control system respectively. The control system is used to control the action of each radius drive mechanism, and the at least two radius drive mechanisms are used to adjust the distance and angle between the linear feed device and the rotating shaft.

4. The multifunctional fully automatic drilling machine according to claim 3 is characterized in that: A synchronous telescopic rod is further provided between the rotating shaft and the linear feeding device, and a locking screw is provided on the synchronous telescopic rod, and the locking screw is used to lock the synchronous telescopic rod.

5. The multifunctional fully automatic drilling machine according to claim 1, characterized in that: It also includes a telescopic stabilizing device for pressing against the top of the drill hole, the telescopic stabilizing device includes a top plate and a top plate driving mechanism, the top plate driving mechanism is installed on the folding and lifting mechanism, the top plate driving mechanism is connected to the control system, and the movement of the top plate driving mechanism is controlled by the control system.

6. The multifunctional fully automatic drilling machine according to claim 1, characterized in that: The free end of the folding and lifting mechanism is also provided with a telescopic support frame for pressing against the working surface, the telescopic support frame includes a support driving mechanism, at least two support rods and a cross beam, the support rods are respectively hinged on the cross beam, the fixed end of the support driving mechanism is installed on the folding and lifting mechanism, the working end of the support driving mechanism is connected to the cross beam, the support driving mechanism is connected to a control system, and the control system is used to control the action of the support driving mechanism.

7. The multifunctional fully automatic drilling machine according to claim 1, 5 or 6, characterized in that: It also includes a hydraulic system, the folding and lifting mechanism includes a first hydraulic cylinder, a second hydraulic cylinder, a first folding arm, a second folding arm, a lifting plate, and a lifting drive mechanism, the fixed end of the first hydraulic cylinder is hinged on the chassis, and the piston rod of the first hydraulic cylinder is connected to the first folding arm; a slide groove is provided on the first folding arm, and the lifting plate is arranged on the slide groove of the first folding arm, the lifting drive mechanism is connected to the control system, and the movement of the lifting drive mechanism is controlled by the control system, and the lifting drive mechanism is used to drive the lifting plate to slide up and down along the first folding arm; the fixed end of the second hydraulic cylinder is hinged on the lifting plate, the piston rod of the second hydraulic cylinder is connected to the second folding arm, and the two sides of the second folding arm are respectively connected to the rotating shaft through the first sliding sleeve; the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the hydraulic system, and the hydraulic system is connected to the control system, and the control system is used to control the movement of the first hydraulic cylinder and the second hydraulic cylinder respectively through the hydraulic system.

8. The multifunctional fully automatic drilling machine according to claim 7, characterized in that: The first folding arm is composed of a first telescopic cylinder and a second telescopic cylinder, the first telescopic cylinder and the second telescopic cylinder are slidably matched, the piston rod of the first hydraulic cylinder is connected to the first telescopic cylinder, the first telescopic cylinder is provided with a third hydraulic cylinder, the piston rod of the third hydraulic cylinder is connected to the second telescopic cylinder, the third hydraulic cylinder is connected to the control system via the hydraulic system, the control system is used to control the action of the third hydraulic cylinder, and the third hydraulic cylinder is used to drive the second telescopic cylinder to move up and down along the first telescopic cylinder; a slide groove is provided on the second telescopic cylinder, and the second telescopic cylinder and the lifting plate are slidably matched.

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